Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1 | /* |
| 2 | * drivers/mmc/host/sdhci-msm.c - Qualcomm Technologies, Inc. MSM SDHCI Platform |
| 3 | * driver source file |
| 4 | * |
Asutosh Das | 1c43b13 | 2018-01-11 18:08:40 +0530 | [diff] [blame] | 5 | * Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 and |
| 9 | * only version 2 as published by the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | */ |
| 17 | |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/mmc/host.h> |
| 20 | #include <linux/mmc/card.h> |
| 21 | #include <linux/mmc/sdio_func.h> |
| 22 | #include <linux/gfp.h> |
| 23 | #include <linux/of.h> |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 24 | #include <linux/of_device.h> |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 25 | #include <linux/of_gpio.h> |
| 26 | #include <linux/regulator/consumer.h> |
| 27 | #include <linux/types.h> |
| 28 | #include <linux/input.h> |
| 29 | #include <linux/platform_device.h> |
| 30 | #include <linux/wait.h> |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 31 | #include <linux/io.h> |
| 32 | #include <linux/delay.h> |
| 33 | #include <linux/scatterlist.h> |
| 34 | #include <linux/slab.h> |
Sahitya Tummala | 581df13 | 2013-03-12 14:57:46 +0530 | [diff] [blame] | 35 | #include <linux/mmc/slot-gpio.h> |
Sahitya Tummala | eaa2186 | 2013-03-20 19:34:59 +0530 | [diff] [blame] | 36 | #include <linux/dma-mapping.h> |
Sahitya Tummala | 66b0fe3 | 2013-04-25 11:50:56 +0530 | [diff] [blame] | 37 | #include <linux/iopoll.h> |
Pratibhasagar V | 9acf264 | 2013-11-21 21:07:21 +0530 | [diff] [blame] | 38 | #include <linux/pinctrl/consumer.h> |
| 39 | #include <linux/iopoll.h> |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 40 | #include <linux/msm-bus.h> |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 41 | #include <linux/pm_runtime.h> |
Asutosh Das | 1c43b13 | 2018-01-11 18:08:40 +0530 | [diff] [blame] | 42 | #include <linux/nvmem-consumer.h> |
Konstantin Dorfman | ddab0cc | 2015-02-25 16:23:50 +0200 | [diff] [blame] | 43 | #include <trace/events/mmc.h> |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 44 | |
Sahitya Tummala | 5687473 | 2015-05-21 08:24:03 +0530 | [diff] [blame] | 45 | #include "sdhci-msm.h" |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 46 | #include "sdhci-msm-ice.h" |
Venkat Gopalakrishnan | d371f14 | 2015-05-29 17:49:46 -0700 | [diff] [blame] | 47 | #include "cmdq_hci.h" |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 48 | |
Asutosh Das | 36c2e92 | 2015-12-01 12:19:58 +0530 | [diff] [blame] | 49 | #define QOS_REMOVE_DELAY_MS 10 |
Venkat Gopalakrishnan | 0a92d53 | 2014-12-16 17:31:00 -0800 | [diff] [blame] | 50 | #define CORE_POWER 0x0 |
| 51 | #define CORE_SW_RST (1 << 7) |
| 52 | |
Venkat Gopalakrishnan | a58f91f | 2012-09-17 16:00:15 -0700 | [diff] [blame] | 53 | #define SDHCI_VER_100 0x2B |
Venkat Gopalakrishnan | 0a92d53 | 2014-12-16 17:31:00 -0800 | [diff] [blame] | 54 | |
| 55 | #define CORE_VERSION_STEP_MASK 0x0000FFFF |
| 56 | #define CORE_VERSION_MINOR_MASK 0x0FFF0000 |
| 57 | #define CORE_VERSION_MINOR_SHIFT 16 |
| 58 | #define CORE_VERSION_MAJOR_MASK 0xF0000000 |
| 59 | #define CORE_VERSION_MAJOR_SHIFT 28 |
| 60 | #define CORE_VERSION_TARGET_MASK 0x000000FF |
Konstantin Dorfman | 98543bf | 2015-10-01 17:56:54 +0300 | [diff] [blame] | 61 | #define SDHCI_MSM_VER_420 0x49 |
Venkat Gopalakrishnan | 0a92d53 | 2014-12-16 17:31:00 -0800 | [diff] [blame] | 62 | |
Venkat Gopalakrishnan | 0a92d53 | 2014-12-16 17:31:00 -0800 | [diff] [blame] | 63 | #define SWITCHABLE_SIGNALLING_VOL (1 << 29) |
Pratibhasagar V | d8acb7c | 2013-11-11 01:32:21 +0530 | [diff] [blame] | 64 | |
| 65 | #define CORE_VERSION_MAJOR_MASK 0xF0000000 |
| 66 | #define CORE_VERSION_MAJOR_SHIFT 28 |
| 67 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 68 | #define CORE_HC_MODE 0x78 |
| 69 | #define HC_MODE_EN 0x1 |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 70 | #define FF_CLK_SW_RST_DIS (1 << 13) |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 71 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 72 | #define CORE_PWRCTL_BUS_OFF 0x01 |
| 73 | #define CORE_PWRCTL_BUS_ON (1 << 1) |
| 74 | #define CORE_PWRCTL_IO_LOW (1 << 2) |
| 75 | #define CORE_PWRCTL_IO_HIGH (1 << 3) |
| 76 | |
| 77 | #define CORE_PWRCTL_BUS_SUCCESS 0x01 |
| 78 | #define CORE_PWRCTL_BUS_FAIL (1 << 1) |
| 79 | #define CORE_PWRCTL_IO_SUCCESS (1 << 2) |
| 80 | #define CORE_PWRCTL_IO_FAIL (1 << 3) |
| 81 | |
| 82 | #define INT_MASK 0xF |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 83 | #define MAX_PHASES 16 |
| 84 | |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 85 | #define CORE_CMD_DAT_TRACK_SEL (1 << 0) |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 86 | #define CORE_DLL_EN (1 << 16) |
| 87 | #define CORE_CDR_EN (1 << 17) |
| 88 | #define CORE_CK_OUT_EN (1 << 18) |
| 89 | #define CORE_CDR_EXT_EN (1 << 19) |
| 90 | #define CORE_DLL_PDN (1 << 29) |
| 91 | #define CORE_DLL_RST (1 << 30) |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 92 | |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 93 | #define CORE_DLL_LOCK (1 << 7) |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 94 | #define CORE_DDR_DLL_LOCK (1 << 11) |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 95 | |
Krishna Konda | 46fd143 | 2014-10-30 21:13:27 -0700 | [diff] [blame] | 96 | #define CORE_CLK_PWRSAVE (1 << 1) |
| 97 | #define CORE_HC_MCLK_SEL_DFLT (2 << 8) |
| 98 | #define CORE_HC_MCLK_SEL_HS400 (3 << 8) |
| 99 | #define CORE_HC_MCLK_SEL_MASK (3 << 8) |
| 100 | #define CORE_HC_AUTO_CMD21_EN (1 << 6) |
| 101 | #define CORE_IO_PAD_PWR_SWITCH_EN (1 << 15) |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 102 | #define CORE_IO_PAD_PWR_SWITCH (1 << 16) |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 103 | #define CORE_HC_SELECT_IN_EN (1 << 18) |
| 104 | #define CORE_HC_SELECT_IN_HS400 (6 << 19) |
| 105 | #define CORE_HC_SELECT_IN_MASK (7 << 19) |
Venkat Gopalakrishnan | 17edb35 | 2015-06-24 14:46:49 -0700 | [diff] [blame] | 106 | #define CORE_VENDOR_SPEC_POR_VAL 0xA1C |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 107 | |
Pavan Anamula | 691dd59 | 2015-08-25 16:11:20 +0530 | [diff] [blame] | 108 | #define HC_SW_RST_WAIT_IDLE_DIS (1 << 20) |
| 109 | #define HC_SW_RST_REQ (1 << 21) |
Sahitya Tummala | 2ba05ae | 2015-03-03 14:03:20 +0530 | [diff] [blame] | 110 | #define CORE_ONE_MID_EN (1 << 25) |
| 111 | |
Pratibhasagar V | d8acb7c | 2013-11-11 01:32:21 +0530 | [diff] [blame] | 112 | #define CORE_8_BIT_SUPPORT (1 << 18) |
| 113 | #define CORE_3_3V_SUPPORT (1 << 24) |
| 114 | #define CORE_3_0V_SUPPORT (1 << 25) |
| 115 | #define CORE_1_8V_SUPPORT (1 << 26) |
Gilad Broner | 2a10ca0 | 2014-10-02 17:20:35 +0300 | [diff] [blame] | 116 | #define CORE_SYS_BUS_SUPPORT_64_BIT BIT(28) |
Krishna Konda | 7feab35 | 2013-09-17 23:55:40 -0700 | [diff] [blame] | 117 | |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 118 | #define CORE_CSR_CDC_CTLR_CFG0 0x130 |
| 119 | #define CORE_SW_TRIG_FULL_CALIB (1 << 16) |
| 120 | #define CORE_HW_AUTOCAL_ENA (1 << 17) |
| 121 | |
| 122 | #define CORE_CSR_CDC_CTLR_CFG1 0x134 |
| 123 | #define CORE_CSR_CDC_CAL_TIMER_CFG0 0x138 |
| 124 | #define CORE_TIMER_ENA (1 << 16) |
| 125 | |
| 126 | #define CORE_CSR_CDC_CAL_TIMER_CFG1 0x13C |
| 127 | #define CORE_CSR_CDC_REFCOUNT_CFG 0x140 |
| 128 | #define CORE_CSR_CDC_COARSE_CAL_CFG 0x144 |
| 129 | #define CORE_CDC_OFFSET_CFG 0x14C |
| 130 | #define CORE_CSR_CDC_DELAY_CFG 0x150 |
| 131 | #define CORE_CDC_SLAVE_DDA_CFG 0x160 |
| 132 | #define CORE_CSR_CDC_STATUS0 0x164 |
| 133 | #define CORE_CALIBRATION_DONE (1 << 0) |
| 134 | |
| 135 | #define CORE_CDC_ERROR_CODE_MASK 0x7000000 |
| 136 | |
Konstantin Dorfman | 98543bf | 2015-10-01 17:56:54 +0300 | [diff] [blame] | 137 | #define CQ_CMD_DBG_RAM 0x110 |
| 138 | #define CQ_CMD_DBG_RAM_WA 0x150 |
| 139 | #define CQ_CMD_DBG_RAM_OL 0x154 |
| 140 | |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 141 | #define CORE_CSR_CDC_GEN_CFG 0x178 |
| 142 | #define CORE_CDC_SWITCH_BYPASS_OFF (1 << 0) |
| 143 | #define CORE_CDC_SWITCH_RC_EN (1 << 1) |
| 144 | |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 145 | #define CORE_CDC_T4_DLY_SEL (1 << 0) |
Ritesh Harjani | ea70966 | 2015-05-27 15:40:24 +0530 | [diff] [blame] | 146 | #define CORE_CMDIN_RCLK_EN (1 << 1) |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 147 | #define CORE_START_CDC_TRAFFIC (1 << 6) |
Ritesh Harjani | ea70966 | 2015-05-27 15:40:24 +0530 | [diff] [blame] | 148 | |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 149 | #define CORE_PWRSAVE_DLL (1 << 3) |
Veerabhadrarao Badiganti | 6b495d4 | 2017-09-12 14:41:39 +0530 | [diff] [blame] | 150 | #define CORE_FIFO_ALT_EN (1 << 10) |
Ritesh Harjani | 4a5ffd1 | 2015-07-15 13:32:07 +0530 | [diff] [blame] | 151 | #define CORE_CMDEN_HS400_INPUT_MASK_CNT (1 << 13) |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 152 | |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 153 | #define CORE_DDR_CAL_EN (1 << 0) |
Venkat Gopalakrishnan | c0a5c3a | 2015-02-03 16:10:07 -0800 | [diff] [blame] | 154 | #define CORE_FLL_CYCLE_CNT (1 << 18) |
| 155 | #define CORE_DLL_CLOCK_DISABLE (1 << 21) |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 156 | |
Pavan Anamula | f7bf511 | 2015-08-21 18:09:42 +0530 | [diff] [blame] | 157 | #define DDR_CONFIG_POR_VAL 0x80040853 |
| 158 | #define DDR_CONFIG_PRG_RCLK_DLY_MASK 0x1FF |
| 159 | #define DDR_CONFIG_PRG_RCLK_DLY 115 |
Venkat Gopalakrishnan | b47cf40 | 2015-09-04 18:32:25 -0700 | [diff] [blame] | 160 | #define DDR_CONFIG_2_POR_VAL 0x80040873 |
Veerabhadrarao Badiganti | b8f2b0c | 2018-03-14 15:21:05 +0530 | [diff] [blame] | 161 | #define DLL_USR_CTL_POR_VAL 0x10800 |
| 162 | #define ENABLE_DLL_LOCK_STATUS (1 << 26) |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 163 | |
Venkat Gopalakrishnan | 450745e | 2014-07-24 20:39:34 -0700 | [diff] [blame] | 164 | /* 512 descriptors */ |
| 165 | #define SDHCI_MSM_MAX_SEGMENTS (1 << 9) |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 166 | #define SDHCI_MSM_MMC_CLK_GATE_DELAY 200 /* msecs */ |
Asutosh Das | 648f9d1 | 2013-01-10 21:11:04 +0530 | [diff] [blame] | 167 | |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 168 | #define CORE_FREQ_100MHZ (100 * 1000 * 1000) |
Venkat Gopalakrishnan | c0a5c3a | 2015-02-03 16:10:07 -0800 | [diff] [blame] | 169 | #define TCXO_FREQ 19200000 |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 170 | |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 171 | #define INVALID_TUNING_PHASE -1 |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 172 | #define sdhci_is_valid_gpio_wakeup_int(_h) ((_h)->pdata->sdiowakeup_irq >= 0) |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 173 | |
Krishna Konda | 96e6b11 | 2013-10-28 15:25:03 -0700 | [diff] [blame] | 174 | #define NUM_TUNING_PHASES 16 |
Talel Shenhar | 6f0f341 | 2015-11-08 14:21:31 +0200 | [diff] [blame] | 175 | #define MAX_DRV_TYPES_SUPPORTED_HS200 4 |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 176 | #define MSM_AUTOSUSPEND_DELAY_MS 100 |
Krishna Konda | 96e6b11 | 2013-10-28 15:25:03 -0700 | [diff] [blame] | 177 | |
Ram Prakash Gupta | 20b8ca1 | 2018-04-16 11:17:22 +0530 | [diff] [blame] | 178 | #define RCLK_TOGGLE 0x2 |
| 179 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 180 | struct sdhci_msm_offset { |
| 181 | u32 CORE_MCI_DATA_CNT; |
| 182 | u32 CORE_MCI_STATUS; |
| 183 | u32 CORE_MCI_FIFO_CNT; |
| 184 | u32 CORE_MCI_VERSION; |
| 185 | u32 CORE_GENERICS; |
| 186 | u32 CORE_TESTBUS_CONFIG; |
| 187 | u32 CORE_TESTBUS_SEL2_BIT; |
| 188 | u32 CORE_TESTBUS_ENA; |
| 189 | u32 CORE_TESTBUS_SEL2; |
| 190 | u32 CORE_PWRCTL_STATUS; |
| 191 | u32 CORE_PWRCTL_MASK; |
| 192 | u32 CORE_PWRCTL_CLEAR; |
| 193 | u32 CORE_PWRCTL_CTL; |
| 194 | u32 CORE_SDCC_DEBUG_REG; |
| 195 | u32 CORE_DLL_CONFIG; |
| 196 | u32 CORE_DLL_STATUS; |
| 197 | u32 CORE_VENDOR_SPEC; |
| 198 | u32 CORE_VENDOR_SPEC_ADMA_ERR_ADDR0; |
| 199 | u32 CORE_VENDOR_SPEC_ADMA_ERR_ADDR1; |
| 200 | u32 CORE_VENDOR_SPEC_FUNC2; |
| 201 | u32 CORE_VENDOR_SPEC_CAPABILITIES0; |
| 202 | u32 CORE_DDR_200_CFG; |
| 203 | u32 CORE_VENDOR_SPEC3; |
| 204 | u32 CORE_DLL_CONFIG_2; |
| 205 | u32 CORE_DDR_CONFIG; |
| 206 | u32 CORE_DDR_CONFIG_2; |
Veerabhadrarao Badiganti | b8f2b0c | 2018-03-14 15:21:05 +0530 | [diff] [blame] | 207 | u32 CORE_DLL_USR_CTL; /* Present on SDCC5.1 onwards */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 208 | }; |
| 209 | |
| 210 | struct sdhci_msm_offset sdhci_msm_offset_mci_removed = { |
| 211 | .CORE_MCI_DATA_CNT = 0x35C, |
| 212 | .CORE_MCI_STATUS = 0x324, |
| 213 | .CORE_MCI_FIFO_CNT = 0x308, |
| 214 | .CORE_MCI_VERSION = 0x318, |
| 215 | .CORE_GENERICS = 0x320, |
| 216 | .CORE_TESTBUS_CONFIG = 0x32C, |
| 217 | .CORE_TESTBUS_SEL2_BIT = 3, |
| 218 | .CORE_TESTBUS_ENA = (1 << 31), |
| 219 | .CORE_TESTBUS_SEL2 = (1 << 3), |
| 220 | .CORE_PWRCTL_STATUS = 0x240, |
| 221 | .CORE_PWRCTL_MASK = 0x244, |
| 222 | .CORE_PWRCTL_CLEAR = 0x248, |
| 223 | .CORE_PWRCTL_CTL = 0x24C, |
| 224 | .CORE_SDCC_DEBUG_REG = 0x358, |
| 225 | .CORE_DLL_CONFIG = 0x200, |
| 226 | .CORE_DLL_STATUS = 0x208, |
| 227 | .CORE_VENDOR_SPEC = 0x20C, |
| 228 | .CORE_VENDOR_SPEC_ADMA_ERR_ADDR0 = 0x214, |
| 229 | .CORE_VENDOR_SPEC_ADMA_ERR_ADDR1 = 0x218, |
| 230 | .CORE_VENDOR_SPEC_FUNC2 = 0x210, |
| 231 | .CORE_VENDOR_SPEC_CAPABILITIES0 = 0x21C, |
| 232 | .CORE_DDR_200_CFG = 0x224, |
| 233 | .CORE_VENDOR_SPEC3 = 0x250, |
| 234 | .CORE_DLL_CONFIG_2 = 0x254, |
| 235 | .CORE_DDR_CONFIG = 0x258, |
| 236 | .CORE_DDR_CONFIG_2 = 0x25C, |
Veerabhadrarao Badiganti | b8f2b0c | 2018-03-14 15:21:05 +0530 | [diff] [blame] | 237 | .CORE_DLL_USR_CTL = 0x388, |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 238 | }; |
| 239 | |
| 240 | struct sdhci_msm_offset sdhci_msm_offset_mci_present = { |
| 241 | .CORE_MCI_DATA_CNT = 0x30, |
| 242 | .CORE_MCI_STATUS = 0x34, |
| 243 | .CORE_MCI_FIFO_CNT = 0x44, |
| 244 | .CORE_MCI_VERSION = 0x050, |
| 245 | .CORE_GENERICS = 0x70, |
| 246 | .CORE_TESTBUS_CONFIG = 0x0CC, |
| 247 | .CORE_TESTBUS_SEL2_BIT = 4, |
| 248 | .CORE_TESTBUS_ENA = (1 << 3), |
| 249 | .CORE_TESTBUS_SEL2 = (1 << 4), |
| 250 | .CORE_PWRCTL_STATUS = 0xDC, |
| 251 | .CORE_PWRCTL_MASK = 0xE0, |
| 252 | .CORE_PWRCTL_CLEAR = 0xE4, |
| 253 | .CORE_PWRCTL_CTL = 0xE8, |
| 254 | .CORE_SDCC_DEBUG_REG = 0x124, |
| 255 | .CORE_DLL_CONFIG = 0x100, |
| 256 | .CORE_DLL_STATUS = 0x108, |
| 257 | .CORE_VENDOR_SPEC = 0x10C, |
| 258 | .CORE_VENDOR_SPEC_ADMA_ERR_ADDR0 = 0x114, |
| 259 | .CORE_VENDOR_SPEC_ADMA_ERR_ADDR1 = 0x118, |
| 260 | .CORE_VENDOR_SPEC_FUNC2 = 0x110, |
| 261 | .CORE_VENDOR_SPEC_CAPABILITIES0 = 0x11C, |
| 262 | .CORE_DDR_200_CFG = 0x184, |
| 263 | .CORE_VENDOR_SPEC3 = 0x1B0, |
| 264 | .CORE_DLL_CONFIG_2 = 0x1B4, |
| 265 | .CORE_DDR_CONFIG = 0x1B8, |
| 266 | .CORE_DDR_CONFIG_2 = 0x1BC, |
| 267 | }; |
| 268 | |
| 269 | u8 sdhci_msm_readb_relaxed(struct sdhci_host *host, u32 offset) |
| 270 | { |
| 271 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 272 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 273 | void __iomem *base_addr; |
| 274 | |
| 275 | if (msm_host->mci_removed) |
| 276 | base_addr = host->ioaddr; |
| 277 | else |
| 278 | base_addr = msm_host->core_mem; |
| 279 | |
| 280 | return readb_relaxed(base_addr + offset); |
| 281 | } |
| 282 | |
| 283 | u32 sdhci_msm_readl_relaxed(struct sdhci_host *host, u32 offset) |
| 284 | { |
| 285 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 286 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 287 | void __iomem *base_addr; |
| 288 | |
| 289 | if (msm_host->mci_removed) |
| 290 | base_addr = host->ioaddr; |
| 291 | else |
| 292 | base_addr = msm_host->core_mem; |
| 293 | |
| 294 | return readl_relaxed(base_addr + offset); |
| 295 | } |
| 296 | |
| 297 | void sdhci_msm_writeb_relaxed(u8 val, struct sdhci_host *host, u32 offset) |
| 298 | { |
| 299 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 300 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 301 | void __iomem *base_addr; |
| 302 | |
| 303 | if (msm_host->mci_removed) |
| 304 | base_addr = host->ioaddr; |
| 305 | else |
| 306 | base_addr = msm_host->core_mem; |
| 307 | |
| 308 | writeb_relaxed(val, base_addr + offset); |
| 309 | } |
| 310 | |
| 311 | void sdhci_msm_writel_relaxed(u32 val, struct sdhci_host *host, u32 offset) |
| 312 | { |
| 313 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 314 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 315 | void __iomem *base_addr; |
| 316 | |
| 317 | if (msm_host->mci_removed) |
| 318 | base_addr = host->ioaddr; |
| 319 | else |
| 320 | base_addr = msm_host->core_mem; |
| 321 | |
| 322 | writel_relaxed(val, base_addr + offset); |
| 323 | } |
| 324 | |
Ritesh Harjani | 8212477 | 2014-11-04 15:34:00 +0530 | [diff] [blame] | 325 | /* Timeout value to avoid infinite waiting for pwr_irq */ |
| 326 | #define MSM_PWR_IRQ_TIMEOUT_MS 5000 |
| 327 | |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 328 | static const u32 tuning_block_64[] = { |
| 329 | 0x00FF0FFF, 0xCCC3CCFF, 0xFFCC3CC3, 0xEFFEFFFE, |
| 330 | 0xDDFFDFFF, 0xFBFFFBFF, 0xFF7FFFBF, 0xEFBDF777, |
| 331 | 0xF0FFF0FF, 0x3CCCFC0F, 0xCFCC33CC, 0xEEFFEFFF, |
| 332 | 0xFDFFFDFF, 0xFFBFFFDF, 0xFFF7FFBB, 0xDE7B7FF7 |
| 333 | }; |
| 334 | |
| 335 | static const u32 tuning_block_128[] = { |
| 336 | 0xFF00FFFF, 0x0000FFFF, 0xCCCCFFFF, 0xCCCC33CC, |
| 337 | 0xCC3333CC, 0xFFFFCCCC, 0xFFFFEEFF, 0xFFEEEEFF, |
| 338 | 0xFFDDFFFF, 0xDDDDFFFF, 0xBBFFFFFF, 0xBBFFFFFF, |
| 339 | 0xFFFFFFBB, 0xFFFFFF77, 0x77FF7777, 0xFFEEDDBB, |
| 340 | 0x00FFFFFF, 0x00FFFFFF, 0xCCFFFF00, 0xCC33CCCC, |
| 341 | 0x3333CCCC, 0xFFCCCCCC, 0xFFEEFFFF, 0xEEEEFFFF, |
| 342 | 0xDDFFFFFF, 0xDDFFFFFF, 0xFFFFFFDD, 0xFFFFFFBB, |
| 343 | 0xFFFFBBBB, 0xFFFF77FF, 0xFF7777FF, 0xEEDDBB77 |
| 344 | }; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 345 | |
Venkat Gopalakrishnan | 095ad97 | 2015-09-30 18:46:18 -0700 | [diff] [blame] | 346 | /* global to hold each slot instance for debug */ |
| 347 | static struct sdhci_msm_host *sdhci_slot[2]; |
| 348 | |
Venkat Gopalakrishnan | 270580a | 2013-03-11 12:17:57 -0700 | [diff] [blame] | 349 | static int disable_slots; |
| 350 | /* root can write, others read */ |
| 351 | module_param(disable_slots, int, S_IRUGO|S_IWUSR); |
| 352 | |
Ritesh Harjani | 7270ca2 | 2017-01-03 15:46:06 +0530 | [diff] [blame] | 353 | static bool nocmdq; |
| 354 | module_param(nocmdq, bool, S_IRUGO|S_IWUSR); |
| 355 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 356 | enum vdd_io_level { |
| 357 | /* set vdd_io_data->low_vol_level */ |
| 358 | VDD_IO_LOW, |
| 359 | /* set vdd_io_data->high_vol_level */ |
| 360 | VDD_IO_HIGH, |
| 361 | /* |
| 362 | * set whatever there in voltage_level (third argument) of |
| 363 | * sdhci_msm_set_vdd_io_vol() function. |
| 364 | */ |
| 365 | VDD_IO_SET_LEVEL, |
| 366 | }; |
| 367 | |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 368 | /* MSM platform specific tuning */ |
| 369 | static inline int msm_dll_poll_ck_out_en(struct sdhci_host *host, |
| 370 | u8 poll) |
| 371 | { |
| 372 | int rc = 0; |
| 373 | u32 wait_cnt = 50; |
| 374 | u8 ck_out_en = 0; |
| 375 | struct mmc_host *mmc = host->mmc; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 376 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 377 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 378 | const struct sdhci_msm_offset *msm_host_offset = |
| 379 | msm_host->offset; |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 380 | |
| 381 | /* poll for CK_OUT_EN bit. max. poll time = 50us */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 382 | ck_out_en = !!(readl_relaxed(host->ioaddr + |
| 383 | msm_host_offset->CORE_DLL_CONFIG) & CORE_CK_OUT_EN); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 384 | |
| 385 | while (ck_out_en != poll) { |
| 386 | if (--wait_cnt == 0) { |
| 387 | pr_err("%s: %s: CK_OUT_EN bit is not %d\n", |
| 388 | mmc_hostname(mmc), __func__, poll); |
| 389 | rc = -ETIMEDOUT; |
| 390 | goto out; |
| 391 | } |
| 392 | udelay(1); |
| 393 | |
| 394 | ck_out_en = !!(readl_relaxed(host->ioaddr + |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 395 | msm_host_offset->CORE_DLL_CONFIG) & CORE_CK_OUT_EN); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 396 | } |
| 397 | out: |
| 398 | return rc; |
| 399 | } |
| 400 | |
Asutosh Das | e5e9ca6 | 2013-07-30 19:08:36 +0530 | [diff] [blame] | 401 | /* |
| 402 | * Enable CDR to track changes of DAT lines and adjust sampling |
| 403 | * point according to voltage/temperature variations |
| 404 | */ |
| 405 | static int msm_enable_cdr_cm_sdc4_dll(struct sdhci_host *host) |
| 406 | { |
| 407 | int rc = 0; |
| 408 | u32 config; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 409 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 410 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 411 | const struct sdhci_msm_offset *msm_host_offset = |
| 412 | msm_host->offset; |
Asutosh Das | e5e9ca6 | 2013-07-30 19:08:36 +0530 | [diff] [blame] | 413 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 414 | config = readl_relaxed(host->ioaddr + |
| 415 | msm_host_offset->CORE_DLL_CONFIG); |
Asutosh Das | e5e9ca6 | 2013-07-30 19:08:36 +0530 | [diff] [blame] | 416 | config |= CORE_CDR_EN; |
| 417 | config &= ~(CORE_CDR_EXT_EN | CORE_CK_OUT_EN); |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 418 | writel_relaxed(config, host->ioaddr + |
| 419 | msm_host_offset->CORE_DLL_CONFIG); |
Asutosh Das | e5e9ca6 | 2013-07-30 19:08:36 +0530 | [diff] [blame] | 420 | |
| 421 | rc = msm_dll_poll_ck_out_en(host, 0); |
| 422 | if (rc) |
| 423 | goto err; |
| 424 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 425 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 426 | msm_host_offset->CORE_DLL_CONFIG) | CORE_CK_OUT_EN), |
| 427 | host->ioaddr + msm_host_offset->CORE_DLL_CONFIG); |
Asutosh Das | e5e9ca6 | 2013-07-30 19:08:36 +0530 | [diff] [blame] | 428 | |
| 429 | rc = msm_dll_poll_ck_out_en(host, 1); |
| 430 | if (rc) |
| 431 | goto err; |
| 432 | goto out; |
| 433 | err: |
| 434 | pr_err("%s: %s: failed\n", mmc_hostname(host->mmc), __func__); |
| 435 | out: |
| 436 | return rc; |
| 437 | } |
| 438 | |
| 439 | static ssize_t store_auto_cmd21(struct device *dev, struct device_attribute |
| 440 | *attr, const char *buf, size_t count) |
| 441 | { |
| 442 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 443 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 444 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 445 | u32 tmp; |
| 446 | unsigned long flags; |
| 447 | |
| 448 | if (!kstrtou32(buf, 0, &tmp)) { |
| 449 | spin_lock_irqsave(&host->lock, flags); |
| 450 | msm_host->en_auto_cmd21 = !!tmp; |
| 451 | spin_unlock_irqrestore(&host->lock, flags); |
| 452 | } |
| 453 | return count; |
| 454 | } |
| 455 | |
| 456 | static ssize_t show_auto_cmd21(struct device *dev, |
| 457 | struct device_attribute *attr, char *buf) |
| 458 | { |
| 459 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 460 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 461 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 462 | |
| 463 | return snprintf(buf, PAGE_SIZE, "%d\n", msm_host->en_auto_cmd21); |
| 464 | } |
| 465 | |
| 466 | /* MSM auto-tuning handler */ |
| 467 | static int sdhci_msm_config_auto_tuning_cmd(struct sdhci_host *host, |
| 468 | bool enable, |
| 469 | u32 type) |
| 470 | { |
| 471 | int rc = 0; |
| 472 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 473 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 474 | const struct sdhci_msm_offset *msm_host_offset = |
| 475 | msm_host->offset; |
Asutosh Das | e5e9ca6 | 2013-07-30 19:08:36 +0530 | [diff] [blame] | 476 | u32 val = 0; |
| 477 | |
| 478 | if (!msm_host->en_auto_cmd21) |
| 479 | return 0; |
| 480 | |
| 481 | if (type == MMC_SEND_TUNING_BLOCK_HS200) |
| 482 | val = CORE_HC_AUTO_CMD21_EN; |
| 483 | else |
| 484 | return 0; |
| 485 | |
| 486 | if (enable) { |
| 487 | rc = msm_enable_cdr_cm_sdc4_dll(host); |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 488 | writel_relaxed(readl_relaxed(host->ioaddr + |
| 489 | msm_host_offset->CORE_VENDOR_SPEC) | val, |
| 490 | host->ioaddr + msm_host_offset->CORE_VENDOR_SPEC); |
Asutosh Das | e5e9ca6 | 2013-07-30 19:08:36 +0530 | [diff] [blame] | 491 | } else { |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 492 | writel_relaxed(readl_relaxed(host->ioaddr + |
| 493 | msm_host_offset->CORE_VENDOR_SPEC) & ~val, |
| 494 | host->ioaddr + msm_host_offset->CORE_VENDOR_SPEC); |
Asutosh Das | e5e9ca6 | 2013-07-30 19:08:36 +0530 | [diff] [blame] | 495 | } |
| 496 | return rc; |
| 497 | } |
| 498 | |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 499 | static int msm_config_cm_dll_phase(struct sdhci_host *host, u8 phase) |
| 500 | { |
| 501 | int rc = 0; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 502 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 503 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 504 | const struct sdhci_msm_offset *msm_host_offset = |
| 505 | msm_host->offset; |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 506 | u8 grey_coded_phase_table[] = {0x0, 0x1, 0x3, 0x2, 0x6, 0x7, 0x5, 0x4, |
| 507 | 0xC, 0xD, 0xF, 0xE, 0xA, 0xB, 0x9, |
| 508 | 0x8}; |
| 509 | unsigned long flags; |
| 510 | u32 config; |
| 511 | struct mmc_host *mmc = host->mmc; |
| 512 | |
| 513 | pr_debug("%s: Enter %s\n", mmc_hostname(mmc), __func__); |
| 514 | spin_lock_irqsave(&host->lock, flags); |
| 515 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 516 | config = readl_relaxed(host->ioaddr + |
| 517 | msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 518 | config &= ~(CORE_CDR_EN | CORE_CK_OUT_EN); |
| 519 | config |= (CORE_CDR_EXT_EN | CORE_DLL_EN); |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 520 | writel_relaxed(config, host->ioaddr + |
| 521 | msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 522 | |
| 523 | /* Wait until CK_OUT_EN bit of DLL_CONFIG register becomes '0' */ |
| 524 | rc = msm_dll_poll_ck_out_en(host, 0); |
| 525 | if (rc) |
| 526 | goto err_out; |
| 527 | |
| 528 | /* |
| 529 | * Write the selected DLL clock output phase (0 ... 15) |
| 530 | * to CDR_SELEXT bit field of DLL_CONFIG register. |
| 531 | */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 532 | writel_relaxed(((readl_relaxed(host->ioaddr + |
| 533 | msm_host_offset->CORE_DLL_CONFIG) |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 534 | & ~(0xF << 20)) |
| 535 | | (grey_coded_phase_table[phase] << 20)), |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 536 | host->ioaddr + msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 537 | |
| 538 | /* Set CK_OUT_EN bit of DLL_CONFIG register to 1. */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 539 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 540 | msm_host_offset->CORE_DLL_CONFIG) | CORE_CK_OUT_EN), |
| 541 | host->ioaddr + msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 542 | |
| 543 | /* Wait until CK_OUT_EN bit of DLL_CONFIG register becomes '1' */ |
| 544 | rc = msm_dll_poll_ck_out_en(host, 1); |
| 545 | if (rc) |
| 546 | goto err_out; |
| 547 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 548 | config = readl_relaxed(host->ioaddr + |
| 549 | msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 550 | config |= CORE_CDR_EN; |
| 551 | config &= ~CORE_CDR_EXT_EN; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 552 | writel_relaxed(config, host->ioaddr + |
| 553 | msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 554 | goto out; |
| 555 | |
| 556 | err_out: |
| 557 | pr_err("%s: %s: Failed to set DLL phase: %d\n", |
| 558 | mmc_hostname(mmc), __func__, phase); |
| 559 | out: |
| 560 | spin_unlock_irqrestore(&host->lock, flags); |
| 561 | pr_debug("%s: Exit %s\n", mmc_hostname(mmc), __func__); |
| 562 | return rc; |
| 563 | } |
| 564 | |
| 565 | /* |
| 566 | * Find out the greatest range of consecuitive selected |
| 567 | * DLL clock output phases that can be used as sampling |
| 568 | * setting for SD3.0 UHS-I card read operation (in SDR104 |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 569 | * timing mode) or for eMMC4.5 card read operation (in |
| 570 | * HS400/HS200 timing mode). |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 571 | * Select the 3/4 of the range and configure the DLL with the |
| 572 | * selected DLL clock output phase. |
| 573 | */ |
| 574 | |
| 575 | static int msm_find_most_appropriate_phase(struct sdhci_host *host, |
| 576 | u8 *phase_table, u8 total_phases) |
| 577 | { |
| 578 | int ret; |
| 579 | u8 ranges[MAX_PHASES][MAX_PHASES] = { {0}, {0} }; |
| 580 | u8 phases_per_row[MAX_PHASES] = {0}; |
| 581 | int row_index = 0, col_index = 0, selected_row_index = 0, curr_max = 0; |
| 582 | int i, cnt, phase_0_raw_index = 0, phase_15_raw_index = 0; |
| 583 | bool phase_0_found = false, phase_15_found = false; |
| 584 | struct mmc_host *mmc = host->mmc; |
| 585 | |
| 586 | pr_debug("%s: Enter %s\n", mmc_hostname(mmc), __func__); |
| 587 | if (!total_phases || (total_phases > MAX_PHASES)) { |
| 588 | pr_err("%s: %s: invalid argument: total_phases=%d\n", |
| 589 | mmc_hostname(mmc), __func__, total_phases); |
| 590 | return -EINVAL; |
| 591 | } |
| 592 | |
| 593 | for (cnt = 0; cnt < total_phases; cnt++) { |
| 594 | ranges[row_index][col_index] = phase_table[cnt]; |
| 595 | phases_per_row[row_index] += 1; |
| 596 | col_index++; |
| 597 | |
| 598 | if ((cnt + 1) == total_phases) { |
| 599 | continue; |
| 600 | /* check if next phase in phase_table is consecutive or not */ |
| 601 | } else if ((phase_table[cnt] + 1) != phase_table[cnt + 1]) { |
| 602 | row_index++; |
| 603 | col_index = 0; |
| 604 | } |
| 605 | } |
| 606 | |
| 607 | if (row_index >= MAX_PHASES) |
| 608 | return -EINVAL; |
| 609 | |
| 610 | /* Check if phase-0 is present in first valid window? */ |
| 611 | if (!ranges[0][0]) { |
| 612 | phase_0_found = true; |
| 613 | phase_0_raw_index = 0; |
| 614 | /* Check if cycle exist between 2 valid windows */ |
| 615 | for (cnt = 1; cnt <= row_index; cnt++) { |
| 616 | if (phases_per_row[cnt]) { |
| 617 | for (i = 0; i < phases_per_row[cnt]; i++) { |
| 618 | if (ranges[cnt][i] == 15) { |
| 619 | phase_15_found = true; |
| 620 | phase_15_raw_index = cnt; |
| 621 | break; |
| 622 | } |
| 623 | } |
| 624 | } |
| 625 | } |
| 626 | } |
| 627 | |
| 628 | /* If 2 valid windows form cycle then merge them as single window */ |
| 629 | if (phase_0_found && phase_15_found) { |
| 630 | /* number of phases in raw where phase 0 is present */ |
| 631 | u8 phases_0 = phases_per_row[phase_0_raw_index]; |
| 632 | /* number of phases in raw where phase 15 is present */ |
| 633 | u8 phases_15 = phases_per_row[phase_15_raw_index]; |
| 634 | |
| 635 | if (phases_0 + phases_15 >= MAX_PHASES) |
| 636 | /* |
| 637 | * If there are more than 1 phase windows then total |
| 638 | * number of phases in both the windows should not be |
| 639 | * more than or equal to MAX_PHASES. |
| 640 | */ |
| 641 | return -EINVAL; |
| 642 | |
| 643 | /* Merge 2 cyclic windows */ |
| 644 | i = phases_15; |
| 645 | for (cnt = 0; cnt < phases_0; cnt++) { |
| 646 | ranges[phase_15_raw_index][i] = |
| 647 | ranges[phase_0_raw_index][cnt]; |
| 648 | if (++i >= MAX_PHASES) |
| 649 | break; |
| 650 | } |
| 651 | |
| 652 | phases_per_row[phase_0_raw_index] = 0; |
| 653 | phases_per_row[phase_15_raw_index] = phases_15 + phases_0; |
| 654 | } |
| 655 | |
| 656 | for (cnt = 0; cnt <= row_index; cnt++) { |
| 657 | if (phases_per_row[cnt] > curr_max) { |
| 658 | curr_max = phases_per_row[cnt]; |
| 659 | selected_row_index = cnt; |
| 660 | } |
| 661 | } |
| 662 | |
| 663 | i = ((curr_max * 3) / 4); |
| 664 | if (i) |
| 665 | i--; |
| 666 | |
| 667 | ret = (int)ranges[selected_row_index][i]; |
| 668 | |
| 669 | if (ret >= MAX_PHASES) { |
| 670 | ret = -EINVAL; |
| 671 | pr_err("%s: %s: invalid phase selected=%d\n", |
| 672 | mmc_hostname(mmc), __func__, ret); |
| 673 | } |
| 674 | |
| 675 | pr_debug("%s: Exit %s\n", mmc_hostname(mmc), __func__); |
| 676 | return ret; |
| 677 | } |
| 678 | |
| 679 | static inline void msm_cm_dll_set_freq(struct sdhci_host *host) |
| 680 | { |
| 681 | u32 mclk_freq = 0; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 682 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 683 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 684 | const struct sdhci_msm_offset *msm_host_offset = |
| 685 | msm_host->offset; |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 686 | |
| 687 | /* Program the MCLK value to MCLK_FREQ bit field */ |
| 688 | if (host->clock <= 112000000) |
| 689 | mclk_freq = 0; |
| 690 | else if (host->clock <= 125000000) |
| 691 | mclk_freq = 1; |
| 692 | else if (host->clock <= 137000000) |
| 693 | mclk_freq = 2; |
| 694 | else if (host->clock <= 150000000) |
| 695 | mclk_freq = 3; |
| 696 | else if (host->clock <= 162000000) |
| 697 | mclk_freq = 4; |
| 698 | else if (host->clock <= 175000000) |
| 699 | mclk_freq = 5; |
| 700 | else if (host->clock <= 187000000) |
| 701 | mclk_freq = 6; |
Subhash Jadavani | b323526 | 2017-07-19 16:56:04 -0700 | [diff] [blame] | 702 | else if (host->clock <= 208000000) |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 703 | mclk_freq = 7; |
| 704 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 705 | writel_relaxed(((readl_relaxed(host->ioaddr + |
| 706 | msm_host_offset->CORE_DLL_CONFIG) |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 707 | & ~(7 << 24)) | (mclk_freq << 24)), |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 708 | host->ioaddr + msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 709 | } |
| 710 | |
| 711 | /* Initialize the DLL (Programmable Delay Line ) */ |
| 712 | static int msm_init_cm_dll(struct sdhci_host *host) |
| 713 | { |
Venkat Gopalakrishnan | c0a5c3a | 2015-02-03 16:10:07 -0800 | [diff] [blame] | 714 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 715 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 716 | const struct sdhci_msm_offset *msm_host_offset = |
| 717 | msm_host->offset; |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 718 | struct mmc_host *mmc = host->mmc; |
| 719 | int rc = 0; |
| 720 | unsigned long flags; |
| 721 | u32 wait_cnt; |
Subhash Jadavani | 99bca3b | 2013-05-28 18:21:57 +0530 | [diff] [blame] | 722 | bool prev_pwrsave, curr_pwrsave; |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 723 | |
| 724 | pr_debug("%s: Enter %s\n", mmc_hostname(mmc), __func__); |
| 725 | spin_lock_irqsave(&host->lock, flags); |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 726 | prev_pwrsave = !!(readl_relaxed(host->ioaddr + |
| 727 | msm_host_offset->CORE_VENDOR_SPEC) & CORE_CLK_PWRSAVE); |
Subhash Jadavani | 99bca3b | 2013-05-28 18:21:57 +0530 | [diff] [blame] | 728 | curr_pwrsave = prev_pwrsave; |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 729 | /* |
| 730 | * Make sure that clock is always enabled when DLL |
| 731 | * tuning is in progress. Keeping PWRSAVE ON may |
| 732 | * turn off the clock. So let's disable the PWRSAVE |
| 733 | * here and re-enable it once tuning is completed. |
| 734 | */ |
Subhash Jadavani | 99bca3b | 2013-05-28 18:21:57 +0530 | [diff] [blame] | 735 | if (prev_pwrsave) { |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 736 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 737 | msm_host_offset->CORE_VENDOR_SPEC) |
| 738 | & ~CORE_CLK_PWRSAVE), host->ioaddr + |
| 739 | msm_host_offset->CORE_VENDOR_SPEC); |
Subhash Jadavani | 99bca3b | 2013-05-28 18:21:57 +0530 | [diff] [blame] | 740 | curr_pwrsave = false; |
| 741 | } |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 742 | |
Venkat Gopalakrishnan | c0a5c3a | 2015-02-03 16:10:07 -0800 | [diff] [blame] | 743 | if (msm_host->use_updated_dll_reset) { |
| 744 | /* Disable the DLL clock */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 745 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 746 | msm_host_offset->CORE_DLL_CONFIG) |
| 747 | & ~CORE_CK_OUT_EN), host->ioaddr + |
| 748 | msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | c0a5c3a | 2015-02-03 16:10:07 -0800 | [diff] [blame] | 749 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 750 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 751 | msm_host_offset->CORE_DLL_CONFIG_2) |
| 752 | | CORE_DLL_CLOCK_DISABLE), host->ioaddr + |
| 753 | msm_host_offset->CORE_DLL_CONFIG_2); |
Venkat Gopalakrishnan | c0a5c3a | 2015-02-03 16:10:07 -0800 | [diff] [blame] | 754 | } |
| 755 | |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 756 | /* Write 1 to DLL_RST bit of DLL_CONFIG register */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 757 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 758 | msm_host_offset->CORE_DLL_CONFIG) | CORE_DLL_RST), |
| 759 | host->ioaddr + msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 760 | |
| 761 | /* Write 1 to DLL_PDN bit of DLL_CONFIG register */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 762 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 763 | msm_host_offset->CORE_DLL_CONFIG) | CORE_DLL_PDN), |
| 764 | host->ioaddr + msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 765 | msm_cm_dll_set_freq(host); |
| 766 | |
Venkat Gopalakrishnan | c0a5c3a | 2015-02-03 16:10:07 -0800 | [diff] [blame] | 767 | if (msm_host->use_updated_dll_reset) { |
| 768 | u32 mclk_freq = 0; |
| 769 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 770 | if ((readl_relaxed(host->ioaddr + |
| 771 | msm_host_offset->CORE_DLL_CONFIG_2) |
Venkat Gopalakrishnan | c0a5c3a | 2015-02-03 16:10:07 -0800 | [diff] [blame] | 772 | & CORE_FLL_CYCLE_CNT)) |
| 773 | mclk_freq = (u32) ((host->clock / TCXO_FREQ) * 8); |
| 774 | else |
| 775 | mclk_freq = (u32) ((host->clock / TCXO_FREQ) * 4); |
| 776 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 777 | writel_relaxed(((readl_relaxed(host->ioaddr + |
| 778 | msm_host_offset->CORE_DLL_CONFIG_2) |
| 779 | & ~(0xFF << 10)) | (mclk_freq << 10)), |
| 780 | host->ioaddr + msm_host_offset->CORE_DLL_CONFIG_2); |
Venkat Gopalakrishnan | c0a5c3a | 2015-02-03 16:10:07 -0800 | [diff] [blame] | 781 | /* wait for 5us before enabling DLL clock */ |
| 782 | udelay(5); |
| 783 | } |
| 784 | |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 785 | /* Write 0 to DLL_RST bit of DLL_CONFIG register */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 786 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 787 | msm_host_offset->CORE_DLL_CONFIG) & ~CORE_DLL_RST), |
| 788 | host->ioaddr + msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 789 | |
| 790 | /* Write 0 to DLL_PDN bit of DLL_CONFIG register */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 791 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 792 | msm_host_offset->CORE_DLL_CONFIG) & ~CORE_DLL_PDN), |
| 793 | host->ioaddr + msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 794 | |
Venkat Gopalakrishnan | c0a5c3a | 2015-02-03 16:10:07 -0800 | [diff] [blame] | 795 | if (msm_host->use_updated_dll_reset) { |
| 796 | msm_cm_dll_set_freq(host); |
| 797 | /* Enable the DLL clock */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 798 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 799 | msm_host_offset->CORE_DLL_CONFIG_2) |
| 800 | & ~CORE_DLL_CLOCK_DISABLE), host->ioaddr + |
| 801 | msm_host_offset->CORE_DLL_CONFIG_2); |
Venkat Gopalakrishnan | c0a5c3a | 2015-02-03 16:10:07 -0800 | [diff] [blame] | 802 | } |
| 803 | |
Veerabhadrarao Badiganti | b8f2b0c | 2018-03-14 15:21:05 +0530 | [diff] [blame] | 804 | /* |
| 805 | * Configure DLL user control register to enable DLL status |
| 806 | * This setting is applicable to SDCC v5.1 onwards only |
| 807 | */ |
| 808 | if (msm_host->need_dll_user_ctl) { |
| 809 | writel_relaxed(DLL_USR_CTL_POR_VAL | ENABLE_DLL_LOCK_STATUS, |
| 810 | host->ioaddr + msm_host_offset->CORE_DLL_USR_CTL); |
| 811 | } |
| 812 | |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 813 | /* Set DLL_EN bit to 1. */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 814 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 815 | msm_host_offset->CORE_DLL_CONFIG) | CORE_DLL_EN), |
| 816 | host->ioaddr + msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 817 | |
| 818 | /* Set CK_OUT_EN bit to 1. */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 819 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 820 | msm_host_offset->CORE_DLL_CONFIG) |
| 821 | | CORE_CK_OUT_EN), host->ioaddr + |
| 822 | msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 823 | |
| 824 | wait_cnt = 50; |
| 825 | /* Wait until DLL_LOCK bit of DLL_STATUS register becomes '1' */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 826 | while (!(readl_relaxed(host->ioaddr + |
| 827 | msm_host_offset->CORE_DLL_STATUS) & CORE_DLL_LOCK)) { |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 828 | /* max. wait for 50us sec for LOCK bit to be set */ |
| 829 | if (--wait_cnt == 0) { |
| 830 | pr_err("%s: %s: DLL failed to LOCK\n", |
| 831 | mmc_hostname(mmc), __func__); |
| 832 | rc = -ETIMEDOUT; |
| 833 | goto out; |
| 834 | } |
| 835 | /* wait for 1us before polling again */ |
| 836 | udelay(1); |
| 837 | } |
| 838 | |
| 839 | out: |
Subhash Jadavani | 99bca3b | 2013-05-28 18:21:57 +0530 | [diff] [blame] | 840 | /* Restore the correct PWRSAVE state */ |
| 841 | if (prev_pwrsave ^ curr_pwrsave) { |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 842 | u32 reg = readl_relaxed(host->ioaddr + |
| 843 | msm_host_offset->CORE_VENDOR_SPEC); |
Subhash Jadavani | 99bca3b | 2013-05-28 18:21:57 +0530 | [diff] [blame] | 844 | |
| 845 | if (prev_pwrsave) |
| 846 | reg |= CORE_CLK_PWRSAVE; |
| 847 | else |
| 848 | reg &= ~CORE_CLK_PWRSAVE; |
| 849 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 850 | writel_relaxed(reg, host->ioaddr + |
| 851 | msm_host_offset->CORE_VENDOR_SPEC); |
Subhash Jadavani | 99bca3b | 2013-05-28 18:21:57 +0530 | [diff] [blame] | 852 | } |
| 853 | |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 854 | spin_unlock_irqrestore(&host->lock, flags); |
| 855 | pr_debug("%s: Exit %s\n", mmc_hostname(mmc), __func__); |
| 856 | return rc; |
| 857 | } |
| 858 | |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 859 | static int sdhci_msm_cdclp533_calibration(struct sdhci_host *host) |
| 860 | { |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 861 | u32 calib_done; |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 862 | int ret = 0; |
| 863 | int cdc_err = 0; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 864 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 865 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 866 | const struct sdhci_msm_offset *msm_host_offset = |
| 867 | msm_host->offset; |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 868 | |
| 869 | pr_debug("%s: Enter %s\n", mmc_hostname(host->mmc), __func__); |
| 870 | |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 871 | /* Write 0 to CDC_T4_DLY_SEL field in VENDOR_SPEC_DDR200_CFG */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 872 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 873 | msm_host_offset->CORE_DDR_200_CFG) |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 874 | & ~CORE_CDC_T4_DLY_SEL), |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 875 | host->ioaddr + msm_host_offset->CORE_DDR_200_CFG); |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 876 | |
| 877 | /* Write 0 to CDC_SWITCH_BYPASS_OFF field in CORE_CSR_CDC_GEN_CFG */ |
| 878 | writel_relaxed((readl_relaxed(host->ioaddr + CORE_CSR_CDC_GEN_CFG) |
| 879 | & ~CORE_CDC_SWITCH_BYPASS_OFF), |
| 880 | host->ioaddr + CORE_CSR_CDC_GEN_CFG); |
| 881 | |
| 882 | /* Write 1 to CDC_SWITCH_RC_EN field in CORE_CSR_CDC_GEN_CFG */ |
| 883 | writel_relaxed((readl_relaxed(host->ioaddr + CORE_CSR_CDC_GEN_CFG) |
| 884 | | CORE_CDC_SWITCH_RC_EN), |
| 885 | host->ioaddr + CORE_CSR_CDC_GEN_CFG); |
| 886 | |
| 887 | /* Write 0 to START_CDC_TRAFFIC field in CORE_DDR200_CFG */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 888 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 889 | msm_host_offset->CORE_DDR_200_CFG) |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 890 | & ~CORE_START_CDC_TRAFFIC), |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 891 | host->ioaddr + msm_host_offset->CORE_DDR_200_CFG); |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 892 | |
| 893 | /* |
| 894 | * Perform CDC Register Initialization Sequence |
| 895 | * |
| 896 | * CORE_CSR_CDC_CTLR_CFG0 0x11800EC |
| 897 | * CORE_CSR_CDC_CTLR_CFG1 0x3011111 |
| 898 | * CORE_CSR_CDC_CAL_TIMER_CFG0 0x1201000 |
| 899 | * CORE_CSR_CDC_CAL_TIMER_CFG1 0x4 |
| 900 | * CORE_CSR_CDC_REFCOUNT_CFG 0xCB732020 |
| 901 | * CORE_CSR_CDC_COARSE_CAL_CFG 0xB19 |
| 902 | * CORE_CSR_CDC_DELAY_CFG 0x3AC |
| 903 | * CORE_CDC_OFFSET_CFG 0x0 |
| 904 | * CORE_CDC_SLAVE_DDA_CFG 0x16334 |
| 905 | */ |
| 906 | |
| 907 | writel_relaxed(0x11800EC, host->ioaddr + CORE_CSR_CDC_CTLR_CFG0); |
| 908 | writel_relaxed(0x3011111, host->ioaddr + CORE_CSR_CDC_CTLR_CFG1); |
| 909 | writel_relaxed(0x1201000, host->ioaddr + CORE_CSR_CDC_CAL_TIMER_CFG0); |
| 910 | writel_relaxed(0x4, host->ioaddr + CORE_CSR_CDC_CAL_TIMER_CFG1); |
| 911 | writel_relaxed(0xCB732020, host->ioaddr + CORE_CSR_CDC_REFCOUNT_CFG); |
| 912 | writel_relaxed(0xB19, host->ioaddr + CORE_CSR_CDC_COARSE_CAL_CFG); |
Subhash Jadavani | be406d9 | 2014-06-17 16:47:48 -0700 | [diff] [blame] | 913 | writel_relaxed(0x4E2, host->ioaddr + CORE_CSR_CDC_DELAY_CFG); |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 914 | writel_relaxed(0x0, host->ioaddr + CORE_CDC_OFFSET_CFG); |
| 915 | writel_relaxed(0x16334, host->ioaddr + CORE_CDC_SLAVE_DDA_CFG); |
| 916 | |
| 917 | /* CDC HW Calibration */ |
| 918 | |
| 919 | /* Write 1 to SW_TRIG_FULL_CALIB field in CORE_CSR_CDC_CTLR_CFG0 */ |
| 920 | writel_relaxed((readl_relaxed(host->ioaddr + CORE_CSR_CDC_CTLR_CFG0) |
| 921 | | CORE_SW_TRIG_FULL_CALIB), |
| 922 | host->ioaddr + CORE_CSR_CDC_CTLR_CFG0); |
| 923 | |
| 924 | /* Write 0 to SW_TRIG_FULL_CALIB field in CORE_CSR_CDC_CTLR_CFG0 */ |
| 925 | writel_relaxed((readl_relaxed(host->ioaddr + CORE_CSR_CDC_CTLR_CFG0) |
| 926 | & ~CORE_SW_TRIG_FULL_CALIB), |
| 927 | host->ioaddr + CORE_CSR_CDC_CTLR_CFG0); |
| 928 | |
| 929 | /* Write 1 to HW_AUTOCAL_ENA field in CORE_CSR_CDC_CTLR_CFG0 */ |
| 930 | writel_relaxed((readl_relaxed(host->ioaddr + CORE_CSR_CDC_CTLR_CFG0) |
| 931 | | CORE_HW_AUTOCAL_ENA), |
| 932 | host->ioaddr + CORE_CSR_CDC_CTLR_CFG0); |
| 933 | |
| 934 | /* Write 1 to TIMER_ENA field in CORE_CSR_CDC_CAL_TIMER_CFG0 */ |
| 935 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 936 | CORE_CSR_CDC_CAL_TIMER_CFG0) | CORE_TIMER_ENA), |
| 937 | host->ioaddr + CORE_CSR_CDC_CAL_TIMER_CFG0); |
| 938 | |
| 939 | mb(); |
| 940 | |
| 941 | /* Poll on CALIBRATION_DONE field in CORE_CSR_CDC_STATUS0 to be 1 */ |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 942 | ret = readl_poll_timeout(host->ioaddr + CORE_CSR_CDC_STATUS0, |
| 943 | calib_done, (calib_done & CORE_CALIBRATION_DONE), 1, 50); |
| 944 | |
| 945 | if (ret == -ETIMEDOUT) { |
| 946 | pr_err("%s: %s: CDC Calibration was not completed\n", |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 947 | mmc_hostname(host->mmc), __func__); |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 948 | goto out; |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 949 | } |
| 950 | |
| 951 | /* Verify CDC_ERROR_CODE field in CORE_CSR_CDC_STATUS0 is 0 */ |
| 952 | cdc_err = readl_relaxed(host->ioaddr + CORE_CSR_CDC_STATUS0) |
| 953 | & CORE_CDC_ERROR_CODE_MASK; |
| 954 | if (cdc_err) { |
| 955 | pr_err("%s: %s: CDC Error Code %d\n", |
| 956 | mmc_hostname(host->mmc), __func__, cdc_err); |
| 957 | ret = -EINVAL; |
| 958 | goto out; |
| 959 | } |
| 960 | |
| 961 | /* Write 1 to START_CDC_TRAFFIC field in CORE_DDR200_CFG */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 962 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 963 | msm_host_offset->CORE_DDR_200_CFG) |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 964 | | CORE_START_CDC_TRAFFIC), |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 965 | host->ioaddr + msm_host_offset->CORE_DDR_200_CFG); |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 966 | out: |
| 967 | pr_debug("%s: Exit %s, ret:%d\n", mmc_hostname(host->mmc), |
| 968 | __func__, ret); |
| 969 | return ret; |
| 970 | } |
| 971 | |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 972 | static int sdhci_msm_cm_dll_sdc4_calibration(struct sdhci_host *host) |
| 973 | { |
Ritesh Harjani | 764065e | 2015-05-13 14:14:45 +0530 | [diff] [blame] | 974 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 975 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 976 | const struct sdhci_msm_offset *msm_host_offset = |
| 977 | msm_host->offset; |
Pavan Anamula | f7bf511 | 2015-08-21 18:09:42 +0530 | [diff] [blame] | 978 | u32 dll_status, ddr_config; |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 979 | int ret = 0; |
| 980 | |
| 981 | pr_debug("%s: Enter %s\n", mmc_hostname(host->mmc), __func__); |
| 982 | |
| 983 | /* |
Pavan Anamula | f7bf511 | 2015-08-21 18:09:42 +0530 | [diff] [blame] | 984 | * Reprogramming the value in case it might have been modified by |
| 985 | * bootloaders. |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 986 | */ |
Vijay Viswanath | a549261 | 2017-10-17 15:38:55 +0530 | [diff] [blame] | 987 | if (msm_host->pdata->rclk_wa) { |
| 988 | writel_relaxed(msm_host->pdata->ddr_config, host->ioaddr + |
| 989 | msm_host_offset->CORE_DDR_CONFIG_2); |
| 990 | } else if (msm_host->rclk_delay_fix) { |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 991 | writel_relaxed(DDR_CONFIG_2_POR_VAL, host->ioaddr + |
| 992 | msm_host_offset->CORE_DDR_CONFIG_2); |
Venkat Gopalakrishnan | b47cf40 | 2015-09-04 18:32:25 -0700 | [diff] [blame] | 993 | } else { |
| 994 | ddr_config = DDR_CONFIG_POR_VAL & |
| 995 | ~DDR_CONFIG_PRG_RCLK_DLY_MASK; |
| 996 | ddr_config |= DDR_CONFIG_PRG_RCLK_DLY; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 997 | writel_relaxed(ddr_config, host->ioaddr + |
| 998 | msm_host_offset->CORE_DDR_CONFIG); |
Venkat Gopalakrishnan | b47cf40 | 2015-09-04 18:32:25 -0700 | [diff] [blame] | 999 | } |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 1000 | |
Ritesh Harjani | 70e2a71 | 2015-08-25 11:34:16 +0530 | [diff] [blame] | 1001 | if (msm_host->enhanced_strobe && mmc_card_strobe(msm_host->mmc->card)) |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 1002 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 1003 | msm_host_offset->CORE_DDR_200_CFG) |
| 1004 | | CORE_CMDIN_RCLK_EN), host->ioaddr + |
| 1005 | msm_host_offset->CORE_DDR_200_CFG); |
Ritesh Harjani | ea70966 | 2015-05-27 15:40:24 +0530 | [diff] [blame] | 1006 | |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 1007 | /* Write 1 to DDR_CAL_EN field in CORE_DLL_CONFIG_2 */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 1008 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 1009 | msm_host_offset->CORE_DLL_CONFIG_2) |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 1010 | | CORE_DDR_CAL_EN), |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 1011 | host->ioaddr + msm_host_offset->CORE_DLL_CONFIG_2); |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 1012 | |
| 1013 | /* Poll on DDR_DLL_LOCK bit in CORE_DLL_STATUS to be set */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 1014 | ret = readl_poll_timeout(host->ioaddr + |
| 1015 | msm_host_offset->CORE_DLL_STATUS, |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 1016 | dll_status, (dll_status & CORE_DDR_DLL_LOCK), 10, 1000); |
| 1017 | |
| 1018 | if (ret == -ETIMEDOUT) { |
| 1019 | pr_err("%s: %s: CM_DLL_SDC4 Calibration was not completed\n", |
| 1020 | mmc_hostname(host->mmc), __func__); |
| 1021 | goto out; |
| 1022 | } |
| 1023 | |
Ritesh Harjani | 764065e | 2015-05-13 14:14:45 +0530 | [diff] [blame] | 1024 | /* |
| 1025 | * set CORE_PWRSAVE_DLL bit in CORE_VENDOR_SPEC3. |
| 1026 | * when MCLK is gated OFF, it is not gated for less than 0.5us |
| 1027 | * and MCLK must be switched on for at-least 1us before DATA |
| 1028 | * starts coming. Controllers with 14lpp tech DLL cannot |
| 1029 | * guarantee above requirement. So PWRSAVE_DLL should not be |
| 1030 | * turned on for host controllers using this DLL. |
| 1031 | */ |
| 1032 | if (!msm_host->use_14lpp_dll) |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 1033 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 1034 | msm_host_offset->CORE_VENDOR_SPEC3) |
| 1035 | | CORE_PWRSAVE_DLL), host->ioaddr + |
| 1036 | msm_host_offset->CORE_VENDOR_SPEC3); |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 1037 | mb(); |
| 1038 | out: |
| 1039 | pr_debug("%s: Exit %s, ret:%d\n", mmc_hostname(host->mmc), |
| 1040 | __func__, ret); |
| 1041 | return ret; |
| 1042 | } |
| 1043 | |
Ritesh Harjani | ea70966 | 2015-05-27 15:40:24 +0530 | [diff] [blame] | 1044 | static int sdhci_msm_enhanced_strobe(struct sdhci_host *host) |
| 1045 | { |
| 1046 | int ret = 0; |
| 1047 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 1048 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 1049 | struct mmc_host *mmc = host->mmc; |
| 1050 | |
| 1051 | pr_debug("%s: Enter %s\n", mmc_hostname(host->mmc), __func__); |
| 1052 | |
Ritesh Harjani | 70e2a71 | 2015-08-25 11:34:16 +0530 | [diff] [blame] | 1053 | if (!msm_host->enhanced_strobe || !mmc_card_strobe(mmc->card)) { |
| 1054 | pr_debug("%s: host/card does not support hs400 enhanced strobe\n", |
Ritesh Harjani | ea70966 | 2015-05-27 15:40:24 +0530 | [diff] [blame] | 1055 | mmc_hostname(mmc)); |
| 1056 | return -EINVAL; |
| 1057 | } |
| 1058 | |
| 1059 | if (msm_host->calibration_done || |
| 1060 | !(mmc->ios.timing == MMC_TIMING_MMC_HS400)) { |
| 1061 | return 0; |
| 1062 | } |
| 1063 | |
| 1064 | /* |
| 1065 | * Reset the tuning block. |
| 1066 | */ |
| 1067 | ret = msm_init_cm_dll(host); |
| 1068 | if (ret) |
| 1069 | goto out; |
| 1070 | |
| 1071 | ret = sdhci_msm_cm_dll_sdc4_calibration(host); |
| 1072 | out: |
| 1073 | if (!ret) |
| 1074 | msm_host->calibration_done = true; |
| 1075 | pr_debug("%s: Exit %s, ret:%d\n", mmc_hostname(host->mmc), |
| 1076 | __func__, ret); |
| 1077 | return ret; |
| 1078 | } |
| 1079 | |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 1080 | static int sdhci_msm_hs400_dll_calibration(struct sdhci_host *host) |
| 1081 | { |
| 1082 | int ret = 0; |
| 1083 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 1084 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 1085 | const struct sdhci_msm_offset *msm_host_offset = |
| 1086 | msm_host->offset; |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 1087 | |
| 1088 | pr_debug("%s: Enter %s\n", mmc_hostname(host->mmc), __func__); |
| 1089 | |
| 1090 | /* |
| 1091 | * Retuning in HS400 (DDR mode) will fail, just reset the |
| 1092 | * tuning block and restore the saved tuning phase. |
| 1093 | */ |
| 1094 | ret = msm_init_cm_dll(host); |
| 1095 | if (ret) |
| 1096 | goto out; |
| 1097 | |
| 1098 | /* Set the selected phase in delay line hw block */ |
| 1099 | ret = msm_config_cm_dll_phase(host, msm_host->saved_tuning_phase); |
| 1100 | if (ret) |
| 1101 | goto out; |
| 1102 | |
Krishna Konda | 0e8efba | 2014-06-23 14:50:38 -0700 | [diff] [blame] | 1103 | /* Write 1 to CMD_DAT_TRACK_SEL field in DLL_CONFIG */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 1104 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 1105 | msm_host_offset->CORE_DLL_CONFIG) |
| 1106 | | CORE_CMD_DAT_TRACK_SEL), host->ioaddr + |
| 1107 | msm_host_offset->CORE_DLL_CONFIG); |
Krishna Konda | 0e8efba | 2014-06-23 14:50:38 -0700 | [diff] [blame] | 1108 | |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 1109 | if (msm_host->use_cdclp533) |
| 1110 | /* Calibrate CDCLP533 DLL HW */ |
| 1111 | ret = sdhci_msm_cdclp533_calibration(host); |
| 1112 | else |
| 1113 | /* Calibrate CM_DLL_SDC4 HW */ |
| 1114 | ret = sdhci_msm_cm_dll_sdc4_calibration(host); |
| 1115 | out: |
| 1116 | pr_debug("%s: Exit %s, ret:%d\n", mmc_hostname(host->mmc), |
| 1117 | __func__, ret); |
| 1118 | return ret; |
| 1119 | } |
| 1120 | |
Krishna Konda | 96e6b11 | 2013-10-28 15:25:03 -0700 | [diff] [blame] | 1121 | static void sdhci_msm_set_mmc_drv_type(struct sdhci_host *host, u32 opcode, |
| 1122 | u8 drv_type) |
| 1123 | { |
| 1124 | struct mmc_command cmd = {0}; |
| 1125 | struct mmc_request mrq = {NULL}; |
| 1126 | struct mmc_host *mmc = host->mmc; |
| 1127 | u8 val = ((drv_type << 4) | 2); |
| 1128 | |
| 1129 | cmd.opcode = MMC_SWITCH; |
| 1130 | cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | |
| 1131 | (EXT_CSD_HS_TIMING << 16) | |
| 1132 | (val << 8) | |
| 1133 | EXT_CSD_CMD_SET_NORMAL; |
| 1134 | cmd.flags = MMC_CMD_AC | MMC_RSP_R1B; |
| 1135 | /* 1 sec */ |
| 1136 | cmd.busy_timeout = 1000 * 1000; |
| 1137 | |
| 1138 | memset(cmd.resp, 0, sizeof(cmd.resp)); |
| 1139 | cmd.retries = 3; |
| 1140 | |
| 1141 | mrq.cmd = &cmd; |
| 1142 | cmd.data = NULL; |
| 1143 | |
| 1144 | mmc_wait_for_req(mmc, &mrq); |
| 1145 | pr_debug("%s: %s: set card drive type to %d\n", |
| 1146 | mmc_hostname(mmc), __func__, |
| 1147 | drv_type); |
| 1148 | } |
| 1149 | |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 1150 | int sdhci_msm_execute_tuning(struct sdhci_host *host, u32 opcode) |
| 1151 | { |
| 1152 | unsigned long flags; |
Sahitya Tummala | 9fe1653 | 2013-06-13 10:36:57 +0530 | [diff] [blame] | 1153 | int tuning_seq_cnt = 3; |
Krishna Konda | 96e6b11 | 2013-10-28 15:25:03 -0700 | [diff] [blame] | 1154 | u8 phase, *data_buf, tuned_phases[NUM_TUNING_PHASES], tuned_phase_cnt; |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 1155 | const u32 *tuning_block_pattern = tuning_block_64; |
| 1156 | int size = sizeof(tuning_block_64); /* Tuning pattern size in bytes */ |
| 1157 | int rc; |
| 1158 | struct mmc_host *mmc = host->mmc; |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 1159 | struct mmc_ios ios = host->mmc->ios; |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 1160 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 1161 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Krishna Konda | 96e6b11 | 2013-10-28 15:25:03 -0700 | [diff] [blame] | 1162 | u8 drv_type = 0; |
| 1163 | bool drv_type_changed = false; |
| 1164 | struct mmc_card *card = host->mmc->card; |
Sahitya Tummala | faff7f8 | 2015-02-25 14:24:52 +0530 | [diff] [blame] | 1165 | int sts_retry; |
Veerabhadrarao Badiganti | 174f3a8 | 2017-06-15 18:44:19 +0530 | [diff] [blame] | 1166 | u8 last_good_phase = 0; |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 1167 | |
| 1168 | /* |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 1169 | * Tuning is required for SDR104, HS200 and HS400 cards and |
| 1170 | * if clock frequency is greater than 100MHz in these modes. |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 1171 | */ |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 1172 | if (host->clock <= CORE_FREQ_100MHZ || |
| 1173 | !((ios.timing == MMC_TIMING_MMC_HS400) || |
| 1174 | (ios.timing == MMC_TIMING_MMC_HS200) || |
| 1175 | (ios.timing == MMC_TIMING_UHS_SDR104))) |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 1176 | return 0; |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 1177 | |
Sahitya Tummala | 0523cda | 2015-11-17 09:24:53 +0530 | [diff] [blame] | 1178 | /* |
| 1179 | * Don't allow re-tuning for CRC errors observed for any commands |
| 1180 | * that are sent during tuning sequence itself. |
| 1181 | */ |
| 1182 | if (msm_host->tuning_in_progress) |
| 1183 | return 0; |
| 1184 | msm_host->tuning_in_progress = true; |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 1185 | pr_debug("%s: Enter %s\n", mmc_hostname(mmc), __func__); |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 1186 | |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 1187 | /* CDC/SDC4 DLL HW calibration is only required for HS400 mode*/ |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 1188 | if (msm_host->tuning_done && !msm_host->calibration_done && |
| 1189 | (mmc->ios.timing == MMC_TIMING_MMC_HS400)) { |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 1190 | rc = sdhci_msm_hs400_dll_calibration(host); |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 1191 | spin_lock_irqsave(&host->lock, flags); |
| 1192 | if (!rc) |
| 1193 | msm_host->calibration_done = true; |
| 1194 | spin_unlock_irqrestore(&host->lock, flags); |
| 1195 | goto out; |
| 1196 | } |
| 1197 | |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 1198 | spin_lock_irqsave(&host->lock, flags); |
| 1199 | |
| 1200 | if ((opcode == MMC_SEND_TUNING_BLOCK_HS200) && |
| 1201 | (mmc->ios.bus_width == MMC_BUS_WIDTH_8)) { |
| 1202 | tuning_block_pattern = tuning_block_128; |
| 1203 | size = sizeof(tuning_block_128); |
| 1204 | } |
| 1205 | spin_unlock_irqrestore(&host->lock, flags); |
| 1206 | |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 1207 | data_buf = kmalloc(size, GFP_KERNEL); |
| 1208 | if (!data_buf) { |
| 1209 | rc = -ENOMEM; |
| 1210 | goto out; |
| 1211 | } |
| 1212 | |
Sahitya Tummala | 9fe1653 | 2013-06-13 10:36:57 +0530 | [diff] [blame] | 1213 | retry: |
Krishna Konda | 96e6b11 | 2013-10-28 15:25:03 -0700 | [diff] [blame] | 1214 | tuned_phase_cnt = 0; |
| 1215 | |
Sahitya Tummala | 9fe1653 | 2013-06-13 10:36:57 +0530 | [diff] [blame] | 1216 | /* first of all reset the tuning block */ |
| 1217 | rc = msm_init_cm_dll(host); |
| 1218 | if (rc) |
| 1219 | goto kfree; |
| 1220 | |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 1221 | phase = 0; |
| 1222 | do { |
| 1223 | struct mmc_command cmd = {0}; |
| 1224 | struct mmc_data data = {0}; |
| 1225 | struct mmc_request mrq = { |
| 1226 | .cmd = &cmd, |
| 1227 | .data = &data |
| 1228 | }; |
| 1229 | struct scatterlist sg; |
Sahitya Tummala | faff7f8 | 2015-02-25 14:24:52 +0530 | [diff] [blame] | 1230 | struct mmc_command sts_cmd = {0}; |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 1231 | |
| 1232 | /* set the phase in delay line hw block */ |
| 1233 | rc = msm_config_cm_dll_phase(host, phase); |
| 1234 | if (rc) |
| 1235 | goto kfree; |
| 1236 | |
| 1237 | cmd.opcode = opcode; |
| 1238 | cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; |
| 1239 | |
| 1240 | data.blksz = size; |
| 1241 | data.blocks = 1; |
| 1242 | data.flags = MMC_DATA_READ; |
| 1243 | data.timeout_ns = 1000 * 1000 * 1000; /* 1 sec */ |
| 1244 | |
| 1245 | data.sg = &sg; |
| 1246 | data.sg_len = 1; |
| 1247 | sg_init_one(&sg, data_buf, size); |
| 1248 | memset(data_buf, 0, size); |
| 1249 | mmc_wait_for_req(mmc, &mrq); |
| 1250 | |
Sahitya Tummala | faff7f8 | 2015-02-25 14:24:52 +0530 | [diff] [blame] | 1251 | if (card && (cmd.error || data.error)) { |
Veerabhadrarao Badiganti | 174f3a8 | 2017-06-15 18:44:19 +0530 | [diff] [blame] | 1252 | /* |
| 1253 | * Set the dll to last known good phase while sending |
| 1254 | * status command to ensure that status command won't |
| 1255 | * fail due to bad phase. |
| 1256 | */ |
| 1257 | if (tuned_phase_cnt) |
| 1258 | last_good_phase = |
| 1259 | tuned_phases[tuned_phase_cnt-1]; |
| 1260 | else if (msm_host->saved_tuning_phase != |
| 1261 | INVALID_TUNING_PHASE) |
| 1262 | last_good_phase = msm_host->saved_tuning_phase; |
| 1263 | |
| 1264 | rc = msm_config_cm_dll_phase(host, last_good_phase); |
| 1265 | if (rc) |
| 1266 | goto kfree; |
| 1267 | |
Sahitya Tummala | faff7f8 | 2015-02-25 14:24:52 +0530 | [diff] [blame] | 1268 | sts_cmd.opcode = MMC_SEND_STATUS; |
| 1269 | sts_cmd.arg = card->rca << 16; |
| 1270 | sts_cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; |
| 1271 | sts_retry = 5; |
| 1272 | while (sts_retry) { |
| 1273 | mmc_wait_for_cmd(mmc, &sts_cmd, 0); |
| 1274 | |
| 1275 | if (sts_cmd.error || |
| 1276 | (R1_CURRENT_STATE(sts_cmd.resp[0]) |
| 1277 | != R1_STATE_TRAN)) { |
| 1278 | sts_retry--; |
| 1279 | /* |
| 1280 | * wait for at least 146 MCLK cycles for |
| 1281 | * the card to move to TRANS state. As |
| 1282 | * the MCLK would be min 200MHz for |
| 1283 | * tuning, we need max 0.73us delay. To |
| 1284 | * be on safer side 1ms delay is given. |
| 1285 | */ |
| 1286 | usleep_range(1000, 1200); |
| 1287 | pr_debug("%s: phase %d sts cmd err %d resp 0x%x\n", |
| 1288 | mmc_hostname(mmc), phase, |
| 1289 | sts_cmd.error, sts_cmd.resp[0]); |
| 1290 | continue; |
| 1291 | } |
| 1292 | break; |
| 1293 | }; |
| 1294 | } |
| 1295 | |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 1296 | if (!cmd.error && !data.error && |
| 1297 | !memcmp(data_buf, tuning_block_pattern, size)) { |
| 1298 | /* tuning is successful at this tuning point */ |
| 1299 | tuned_phases[tuned_phase_cnt++] = phase; |
Krishna Konda | 96e6b11 | 2013-10-28 15:25:03 -0700 | [diff] [blame] | 1300 | pr_debug("%s: %s: found *** good *** phase = %d\n", |
| 1301 | mmc_hostname(mmc), __func__, phase); |
| 1302 | } else { |
Veerabhadrarao Badiganti | cd78bbb | 2017-10-17 08:41:01 +0530 | [diff] [blame] | 1303 | /* Ignore crc errors occurred during tuning */ |
| 1304 | if (cmd.error) |
| 1305 | mmc->err_stats[MMC_ERR_CMD_CRC]--; |
| 1306 | else if (data.error) |
| 1307 | mmc->err_stats[MMC_ERR_DAT_CRC]--; |
Krishna Konda | 96e6b11 | 2013-10-28 15:25:03 -0700 | [diff] [blame] | 1308 | pr_debug("%s: %s: found ## bad ## phase = %d\n", |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 1309 | mmc_hostname(mmc), __func__, phase); |
| 1310 | } |
| 1311 | } while (++phase < 16); |
| 1312 | |
Sahitya Tummala | dfdb4af | 2014-04-01 14:29:13 +0530 | [diff] [blame] | 1313 | if ((tuned_phase_cnt == NUM_TUNING_PHASES) && |
| 1314 | card && mmc_card_mmc(card)) { |
Krishna Konda | 96e6b11 | 2013-10-28 15:25:03 -0700 | [diff] [blame] | 1315 | /* |
| 1316 | * If all phases pass then its a problem. So change the card's |
| 1317 | * drive type to a different value, if supported and repeat |
| 1318 | * tuning until at least one phase fails. Then set the original |
| 1319 | * drive type back. |
| 1320 | * |
| 1321 | * If all the phases still pass after trying all possible |
| 1322 | * drive types, then one of those 16 phases will be picked. |
| 1323 | * This is no different from what was going on before the |
| 1324 | * modification to change drive type and retune. |
| 1325 | */ |
| 1326 | pr_debug("%s: tuned phases count: %d\n", mmc_hostname(mmc), |
| 1327 | tuned_phase_cnt); |
| 1328 | |
| 1329 | /* set drive type to other value . default setting is 0x0 */ |
| 1330 | while (++drv_type <= MAX_DRV_TYPES_SUPPORTED_HS200) { |
Talel Shenhar | 6f0f341 | 2015-11-08 14:21:31 +0200 | [diff] [blame] | 1331 | pr_debug("%s: trying different drive strength (%d)\n", |
| 1332 | mmc_hostname(mmc), drv_type); |
Krishna Konda | 96e6b11 | 2013-10-28 15:25:03 -0700 | [diff] [blame] | 1333 | if (card->ext_csd.raw_driver_strength & |
| 1334 | (1 << drv_type)) { |
| 1335 | sdhci_msm_set_mmc_drv_type(host, opcode, |
| 1336 | drv_type); |
| 1337 | if (!drv_type_changed) |
| 1338 | drv_type_changed = true; |
| 1339 | goto retry; |
| 1340 | } |
| 1341 | } |
| 1342 | } |
| 1343 | |
| 1344 | /* reset drive type to default (50 ohm) if changed */ |
| 1345 | if (drv_type_changed) |
| 1346 | sdhci_msm_set_mmc_drv_type(host, opcode, 0); |
| 1347 | |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 1348 | if (tuned_phase_cnt) { |
| 1349 | rc = msm_find_most_appropriate_phase(host, tuned_phases, |
| 1350 | tuned_phase_cnt); |
| 1351 | if (rc < 0) |
| 1352 | goto kfree; |
| 1353 | else |
| 1354 | phase = (u8)rc; |
| 1355 | |
| 1356 | /* |
| 1357 | * Finally set the selected phase in delay |
| 1358 | * line hw block. |
| 1359 | */ |
| 1360 | rc = msm_config_cm_dll_phase(host, phase); |
| 1361 | if (rc) |
| 1362 | goto kfree; |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 1363 | msm_host->saved_tuning_phase = phase; |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 1364 | pr_debug("%s: %s: finally setting the tuning phase to %d\n", |
| 1365 | mmc_hostname(mmc), __func__, phase); |
| 1366 | } else { |
Sahitya Tummala | 9fe1653 | 2013-06-13 10:36:57 +0530 | [diff] [blame] | 1367 | if (--tuning_seq_cnt) |
| 1368 | goto retry; |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 1369 | /* tuning failed */ |
| 1370 | pr_err("%s: %s: no tuning point found\n", |
| 1371 | mmc_hostname(mmc), __func__); |
Sahitya Tummala | 9fe1653 | 2013-06-13 10:36:57 +0530 | [diff] [blame] | 1372 | rc = -EIO; |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 1373 | } |
| 1374 | |
| 1375 | kfree: |
| 1376 | kfree(data_buf); |
| 1377 | out: |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 1378 | spin_lock_irqsave(&host->lock, flags); |
| 1379 | if (!rc) |
| 1380 | msm_host->tuning_done = true; |
| 1381 | spin_unlock_irqrestore(&host->lock, flags); |
Sahitya Tummala | 0523cda | 2015-11-17 09:24:53 +0530 | [diff] [blame] | 1382 | msm_host->tuning_in_progress = false; |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 1383 | pr_debug("%s: Exit %s, err(%d)\n", mmc_hostname(mmc), __func__, rc); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 1384 | return rc; |
| 1385 | } |
| 1386 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1387 | static int sdhci_msm_setup_gpio(struct sdhci_msm_pltfm_data *pdata, bool enable) |
| 1388 | { |
| 1389 | struct sdhci_msm_gpio_data *curr; |
| 1390 | int i, ret = 0; |
| 1391 | |
| 1392 | curr = pdata->pin_data->gpio_data; |
| 1393 | for (i = 0; i < curr->size; i++) { |
| 1394 | if (!gpio_is_valid(curr->gpio[i].no)) { |
| 1395 | ret = -EINVAL; |
| 1396 | pr_err("%s: Invalid gpio = %d\n", __func__, |
| 1397 | curr->gpio[i].no); |
| 1398 | goto free_gpios; |
| 1399 | } |
| 1400 | if (enable) { |
| 1401 | ret = gpio_request(curr->gpio[i].no, |
| 1402 | curr->gpio[i].name); |
| 1403 | if (ret) { |
| 1404 | pr_err("%s: gpio_request(%d, %s) failed %d\n", |
| 1405 | __func__, curr->gpio[i].no, |
| 1406 | curr->gpio[i].name, ret); |
| 1407 | goto free_gpios; |
| 1408 | } |
| 1409 | curr->gpio[i].is_enabled = true; |
| 1410 | } else { |
| 1411 | gpio_free(curr->gpio[i].no); |
| 1412 | curr->gpio[i].is_enabled = false; |
| 1413 | } |
| 1414 | } |
| 1415 | return ret; |
| 1416 | |
| 1417 | free_gpios: |
| 1418 | for (i--; i >= 0; i--) { |
| 1419 | gpio_free(curr->gpio[i].no); |
| 1420 | curr->gpio[i].is_enabled = false; |
| 1421 | } |
| 1422 | return ret; |
| 1423 | } |
| 1424 | |
Can Guo | b903ad8 | 2017-10-17 13:22:53 +0800 | [diff] [blame] | 1425 | static int sdhci_msm_config_pinctrl_drv_type(struct sdhci_msm_pltfm_data *pdata, |
| 1426 | unsigned int clock) |
| 1427 | { |
| 1428 | int ret = 0; |
| 1429 | |
| 1430 | if (clock > 150000000) { |
| 1431 | if (pdata->pctrl_data->pins_drv_type_200MHz) |
| 1432 | ret = pinctrl_select_state(pdata->pctrl_data->pctrl, |
| 1433 | pdata->pctrl_data->pins_drv_type_200MHz); |
| 1434 | } else if (clock > 75000000) { |
| 1435 | if (pdata->pctrl_data->pins_drv_type_100MHz) |
| 1436 | ret = pinctrl_select_state(pdata->pctrl_data->pctrl, |
| 1437 | pdata->pctrl_data->pins_drv_type_100MHz); |
| 1438 | } else if (clock > 400000) { |
| 1439 | if (pdata->pctrl_data->pins_drv_type_50MHz) |
| 1440 | ret = pinctrl_select_state(pdata->pctrl_data->pctrl, |
| 1441 | pdata->pctrl_data->pins_drv_type_50MHz); |
| 1442 | } else { |
| 1443 | if (pdata->pctrl_data->pins_drv_type_400KHz) |
| 1444 | ret = pinctrl_select_state(pdata->pctrl_data->pctrl, |
| 1445 | pdata->pctrl_data->pins_drv_type_400KHz); |
| 1446 | } |
| 1447 | |
| 1448 | return ret; |
| 1449 | } |
| 1450 | |
Pratibhasagar V | 9acf264 | 2013-11-21 21:07:21 +0530 | [diff] [blame] | 1451 | static int sdhci_msm_setup_pinctrl(struct sdhci_msm_pltfm_data *pdata, |
| 1452 | bool enable) |
| 1453 | { |
| 1454 | int ret = 0; |
| 1455 | |
| 1456 | if (enable) |
| 1457 | ret = pinctrl_select_state(pdata->pctrl_data->pctrl, |
| 1458 | pdata->pctrl_data->pins_active); |
| 1459 | else |
| 1460 | ret = pinctrl_select_state(pdata->pctrl_data->pctrl, |
| 1461 | pdata->pctrl_data->pins_sleep); |
| 1462 | |
| 1463 | if (ret < 0) |
| 1464 | pr_err("%s state for pinctrl failed with %d\n", |
| 1465 | enable ? "Enabling" : "Disabling", ret); |
| 1466 | |
| 1467 | return ret; |
| 1468 | } |
| 1469 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1470 | static int sdhci_msm_setup_pins(struct sdhci_msm_pltfm_data *pdata, bool enable) |
| 1471 | { |
| 1472 | int ret = 0; |
| 1473 | |
Pratibhasagar V | 9acf264 | 2013-11-21 21:07:21 +0530 | [diff] [blame] | 1474 | if (pdata->pin_cfg_sts == enable) { |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1475 | return 0; |
Pratibhasagar V | 9acf264 | 2013-11-21 21:07:21 +0530 | [diff] [blame] | 1476 | } else if (pdata->pctrl_data) { |
| 1477 | ret = sdhci_msm_setup_pinctrl(pdata, enable); |
| 1478 | goto out; |
| 1479 | } else if (!pdata->pin_data) { |
| 1480 | return 0; |
| 1481 | } |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1482 | |
Sahitya Tummala | 1cd7e07 | 2014-02-14 13:19:01 +0530 | [diff] [blame] | 1483 | if (pdata->pin_data->is_gpio) |
| 1484 | ret = sdhci_msm_setup_gpio(pdata, enable); |
Pratibhasagar V | 9acf264 | 2013-11-21 21:07:21 +0530 | [diff] [blame] | 1485 | out: |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1486 | if (!ret) |
Pratibhasagar V | 9acf264 | 2013-11-21 21:07:21 +0530 | [diff] [blame] | 1487 | pdata->pin_cfg_sts = enable; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1488 | |
| 1489 | return ret; |
| 1490 | } |
| 1491 | |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 1492 | static int sdhci_msm_dt_get_array(struct device *dev, const char *prop_name, |
| 1493 | u32 **out, int *len, u32 size) |
| 1494 | { |
| 1495 | int ret = 0; |
| 1496 | struct device_node *np = dev->of_node; |
| 1497 | size_t sz; |
| 1498 | u32 *arr = NULL; |
| 1499 | |
| 1500 | if (!of_get_property(np, prop_name, len)) { |
| 1501 | ret = -EINVAL; |
| 1502 | goto out; |
| 1503 | } |
| 1504 | sz = *len = *len / sizeof(*arr); |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 1505 | if (sz <= 0 || (size > 0 && (sz > size))) { |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 1506 | dev_err(dev, "%s invalid size\n", prop_name); |
| 1507 | ret = -EINVAL; |
| 1508 | goto out; |
| 1509 | } |
| 1510 | |
| 1511 | arr = devm_kzalloc(dev, sz * sizeof(*arr), GFP_KERNEL); |
| 1512 | if (!arr) { |
| 1513 | dev_err(dev, "%s failed allocating memory\n", prop_name); |
| 1514 | ret = -ENOMEM; |
| 1515 | goto out; |
| 1516 | } |
| 1517 | |
| 1518 | ret = of_property_read_u32_array(np, prop_name, arr, sz); |
| 1519 | if (ret < 0) { |
| 1520 | dev_err(dev, "%s failed reading array %d\n", prop_name, ret); |
| 1521 | goto out; |
| 1522 | } |
| 1523 | *out = arr; |
| 1524 | out: |
| 1525 | if (ret) |
| 1526 | *len = 0; |
| 1527 | return ret; |
| 1528 | } |
| 1529 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1530 | #define MAX_PROP_SIZE 32 |
| 1531 | static int sdhci_msm_dt_parse_vreg_info(struct device *dev, |
| 1532 | struct sdhci_msm_reg_data **vreg_data, const char *vreg_name) |
| 1533 | { |
| 1534 | int len, ret = 0; |
| 1535 | const __be32 *prop; |
| 1536 | char prop_name[MAX_PROP_SIZE]; |
| 1537 | struct sdhci_msm_reg_data *vreg; |
| 1538 | struct device_node *np = dev->of_node; |
| 1539 | |
| 1540 | snprintf(prop_name, MAX_PROP_SIZE, "%s-supply", vreg_name); |
| 1541 | if (!of_parse_phandle(np, prop_name, 0)) { |
Asutosh Das | c58cc7a | 2013-06-28 15:03:44 +0530 | [diff] [blame] | 1542 | dev_info(dev, "No vreg data found for %s\n", vreg_name); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1543 | return ret; |
| 1544 | } |
| 1545 | |
| 1546 | vreg = devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL); |
| 1547 | if (!vreg) { |
| 1548 | dev_err(dev, "No memory for vreg: %s\n", vreg_name); |
| 1549 | ret = -ENOMEM; |
| 1550 | return ret; |
| 1551 | } |
| 1552 | |
| 1553 | vreg->name = vreg_name; |
| 1554 | |
| 1555 | snprintf(prop_name, MAX_PROP_SIZE, |
| 1556 | "qcom,%s-always-on", vreg_name); |
| 1557 | if (of_get_property(np, prop_name, NULL)) |
| 1558 | vreg->is_always_on = true; |
| 1559 | |
| 1560 | snprintf(prop_name, MAX_PROP_SIZE, |
| 1561 | "qcom,%s-lpm-sup", vreg_name); |
| 1562 | if (of_get_property(np, prop_name, NULL)) |
| 1563 | vreg->lpm_sup = true; |
| 1564 | |
| 1565 | snprintf(prop_name, MAX_PROP_SIZE, |
| 1566 | "qcom,%s-voltage-level", vreg_name); |
| 1567 | prop = of_get_property(np, prop_name, &len); |
| 1568 | if (!prop || (len != (2 * sizeof(__be32)))) { |
| 1569 | dev_warn(dev, "%s %s property\n", |
| 1570 | prop ? "invalid format" : "no", prop_name); |
| 1571 | } else { |
| 1572 | vreg->low_vol_level = be32_to_cpup(&prop[0]); |
| 1573 | vreg->high_vol_level = be32_to_cpup(&prop[1]); |
| 1574 | } |
| 1575 | |
| 1576 | snprintf(prop_name, MAX_PROP_SIZE, |
| 1577 | "qcom,%s-current-level", vreg_name); |
| 1578 | prop = of_get_property(np, prop_name, &len); |
| 1579 | if (!prop || (len != (2 * sizeof(__be32)))) { |
| 1580 | dev_warn(dev, "%s %s property\n", |
| 1581 | prop ? "invalid format" : "no", prop_name); |
| 1582 | } else { |
| 1583 | vreg->lpm_uA = be32_to_cpup(&prop[0]); |
| 1584 | vreg->hpm_uA = be32_to_cpup(&prop[1]); |
| 1585 | } |
| 1586 | |
| 1587 | *vreg_data = vreg; |
| 1588 | dev_dbg(dev, "%s: %s %s vol=[%d %d]uV, curr=[%d %d]uA\n", |
| 1589 | vreg->name, vreg->is_always_on ? "always_on," : "", |
| 1590 | vreg->lpm_sup ? "lpm_sup," : "", vreg->low_vol_level, |
| 1591 | vreg->high_vol_level, vreg->lpm_uA, vreg->hpm_uA); |
| 1592 | |
| 1593 | return ret; |
| 1594 | } |
| 1595 | |
Pratibhasagar V | 9acf264 | 2013-11-21 21:07:21 +0530 | [diff] [blame] | 1596 | static int sdhci_msm_parse_pinctrl_info(struct device *dev, |
| 1597 | struct sdhci_msm_pltfm_data *pdata) |
| 1598 | { |
| 1599 | struct sdhci_pinctrl_data *pctrl_data; |
| 1600 | struct pinctrl *pctrl; |
| 1601 | int ret = 0; |
| 1602 | |
| 1603 | /* Try to obtain pinctrl handle */ |
| 1604 | pctrl = devm_pinctrl_get(dev); |
| 1605 | if (IS_ERR(pctrl)) { |
| 1606 | ret = PTR_ERR(pctrl); |
| 1607 | goto out; |
| 1608 | } |
| 1609 | pctrl_data = devm_kzalloc(dev, sizeof(*pctrl_data), GFP_KERNEL); |
| 1610 | if (!pctrl_data) { |
| 1611 | dev_err(dev, "No memory for sdhci_pinctrl_data\n"); |
| 1612 | ret = -ENOMEM; |
| 1613 | goto out; |
| 1614 | } |
| 1615 | pctrl_data->pctrl = pctrl; |
| 1616 | /* Look-up and keep the states handy to be used later */ |
| 1617 | pctrl_data->pins_active = pinctrl_lookup_state( |
| 1618 | pctrl_data->pctrl, "active"); |
| 1619 | if (IS_ERR(pctrl_data->pins_active)) { |
| 1620 | ret = PTR_ERR(pctrl_data->pins_active); |
| 1621 | dev_err(dev, "Could not get active pinstates, err:%d\n", ret); |
| 1622 | goto out; |
| 1623 | } |
| 1624 | pctrl_data->pins_sleep = pinctrl_lookup_state( |
| 1625 | pctrl_data->pctrl, "sleep"); |
| 1626 | if (IS_ERR(pctrl_data->pins_sleep)) { |
| 1627 | ret = PTR_ERR(pctrl_data->pins_sleep); |
| 1628 | dev_err(dev, "Could not get sleep pinstates, err:%d\n", ret); |
| 1629 | goto out; |
| 1630 | } |
Can Guo | b903ad8 | 2017-10-17 13:22:53 +0800 | [diff] [blame] | 1631 | |
| 1632 | pctrl_data->pins_drv_type_400KHz = pinctrl_lookup_state( |
| 1633 | pctrl_data->pctrl, "ds_400KHz"); |
Veerabhadrarao Badiganti | 0d5fc28 | 2017-10-27 16:23:13 +0530 | [diff] [blame] | 1634 | if (IS_ERR(pctrl_data->pins_drv_type_400KHz)) { |
Can Guo | b903ad8 | 2017-10-17 13:22:53 +0800 | [diff] [blame] | 1635 | dev_dbg(dev, "Could not get 400K pinstates, err:%d\n", ret); |
Veerabhadrarao Badiganti | 0d5fc28 | 2017-10-27 16:23:13 +0530 | [diff] [blame] | 1636 | pctrl_data->pins_drv_type_400KHz = NULL; |
| 1637 | } |
Can Guo | b903ad8 | 2017-10-17 13:22:53 +0800 | [diff] [blame] | 1638 | |
| 1639 | pctrl_data->pins_drv_type_50MHz = pinctrl_lookup_state( |
| 1640 | pctrl_data->pctrl, "ds_50MHz"); |
Veerabhadrarao Badiganti | 0d5fc28 | 2017-10-27 16:23:13 +0530 | [diff] [blame] | 1641 | if (IS_ERR(pctrl_data->pins_drv_type_50MHz)) { |
Can Guo | b903ad8 | 2017-10-17 13:22:53 +0800 | [diff] [blame] | 1642 | dev_dbg(dev, "Could not get 50M pinstates, err:%d\n", ret); |
Veerabhadrarao Badiganti | 0d5fc28 | 2017-10-27 16:23:13 +0530 | [diff] [blame] | 1643 | pctrl_data->pins_drv_type_50MHz = NULL; |
| 1644 | } |
Can Guo | b903ad8 | 2017-10-17 13:22:53 +0800 | [diff] [blame] | 1645 | |
| 1646 | pctrl_data->pins_drv_type_100MHz = pinctrl_lookup_state( |
| 1647 | pctrl_data->pctrl, "ds_100MHz"); |
Veerabhadrarao Badiganti | 0d5fc28 | 2017-10-27 16:23:13 +0530 | [diff] [blame] | 1648 | if (IS_ERR(pctrl_data->pins_drv_type_100MHz)) { |
Can Guo | b903ad8 | 2017-10-17 13:22:53 +0800 | [diff] [blame] | 1649 | dev_dbg(dev, "Could not get 100M pinstates, err:%d\n", ret); |
Veerabhadrarao Badiganti | 0d5fc28 | 2017-10-27 16:23:13 +0530 | [diff] [blame] | 1650 | pctrl_data->pins_drv_type_100MHz = NULL; |
| 1651 | } |
Can Guo | b903ad8 | 2017-10-17 13:22:53 +0800 | [diff] [blame] | 1652 | |
| 1653 | pctrl_data->pins_drv_type_200MHz = pinctrl_lookup_state( |
| 1654 | pctrl_data->pctrl, "ds_200MHz"); |
Veerabhadrarao Badiganti | 0d5fc28 | 2017-10-27 16:23:13 +0530 | [diff] [blame] | 1655 | if (IS_ERR(pctrl_data->pins_drv_type_200MHz)) { |
Can Guo | b903ad8 | 2017-10-17 13:22:53 +0800 | [diff] [blame] | 1656 | dev_dbg(dev, "Could not get 200M pinstates, err:%d\n", ret); |
Veerabhadrarao Badiganti | 0d5fc28 | 2017-10-27 16:23:13 +0530 | [diff] [blame] | 1657 | pctrl_data->pins_drv_type_200MHz = NULL; |
| 1658 | } |
Can Guo | b903ad8 | 2017-10-17 13:22:53 +0800 | [diff] [blame] | 1659 | |
Pratibhasagar V | 9acf264 | 2013-11-21 21:07:21 +0530 | [diff] [blame] | 1660 | pdata->pctrl_data = pctrl_data; |
| 1661 | out: |
| 1662 | return ret; |
| 1663 | } |
| 1664 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1665 | #define GPIO_NAME_MAX_LEN 32 |
| 1666 | static int sdhci_msm_dt_parse_gpio_info(struct device *dev, |
| 1667 | struct sdhci_msm_pltfm_data *pdata) |
| 1668 | { |
| 1669 | int ret = 0, cnt, i; |
| 1670 | struct sdhci_msm_pin_data *pin_data; |
| 1671 | struct device_node *np = dev->of_node; |
| 1672 | |
Pratibhasagar V | 9acf264 | 2013-11-21 21:07:21 +0530 | [diff] [blame] | 1673 | ret = sdhci_msm_parse_pinctrl_info(dev, pdata); |
| 1674 | if (!ret) { |
| 1675 | goto out; |
| 1676 | } else if (ret == -EPROBE_DEFER) { |
| 1677 | dev_err(dev, "Pinctrl framework not registered, err:%d\n", ret); |
| 1678 | goto out; |
| 1679 | } else { |
| 1680 | dev_err(dev, "Parsing Pinctrl failed with %d, falling back on GPIO lib\n", |
| 1681 | ret); |
Sahitya Tummala | 1cd7e07 | 2014-02-14 13:19:01 +0530 | [diff] [blame] | 1682 | ret = 0; |
Pratibhasagar V | 9acf264 | 2013-11-21 21:07:21 +0530 | [diff] [blame] | 1683 | } |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1684 | pin_data = devm_kzalloc(dev, sizeof(*pin_data), GFP_KERNEL); |
| 1685 | if (!pin_data) { |
| 1686 | dev_err(dev, "No memory for pin_data\n"); |
| 1687 | ret = -ENOMEM; |
| 1688 | goto out; |
| 1689 | } |
| 1690 | |
| 1691 | cnt = of_gpio_count(np); |
| 1692 | if (cnt > 0) { |
| 1693 | pin_data->gpio_data = devm_kzalloc(dev, |
| 1694 | sizeof(struct sdhci_msm_gpio_data), GFP_KERNEL); |
| 1695 | if (!pin_data->gpio_data) { |
| 1696 | dev_err(dev, "No memory for gpio_data\n"); |
| 1697 | ret = -ENOMEM; |
| 1698 | goto out; |
| 1699 | } |
| 1700 | pin_data->gpio_data->size = cnt; |
| 1701 | pin_data->gpio_data->gpio = devm_kzalloc(dev, cnt * |
| 1702 | sizeof(struct sdhci_msm_gpio), GFP_KERNEL); |
| 1703 | |
| 1704 | if (!pin_data->gpio_data->gpio) { |
| 1705 | dev_err(dev, "No memory for gpio\n"); |
| 1706 | ret = -ENOMEM; |
| 1707 | goto out; |
| 1708 | } |
| 1709 | |
| 1710 | for (i = 0; i < cnt; i++) { |
| 1711 | const char *name = NULL; |
| 1712 | char result[GPIO_NAME_MAX_LEN]; |
| 1713 | pin_data->gpio_data->gpio[i].no = of_get_gpio(np, i); |
| 1714 | of_property_read_string_index(np, |
| 1715 | "qcom,gpio-names", i, &name); |
| 1716 | |
| 1717 | snprintf(result, GPIO_NAME_MAX_LEN, "%s-%s", |
| 1718 | dev_name(dev), name ? name : "?"); |
| 1719 | pin_data->gpio_data->gpio[i].name = result; |
| 1720 | dev_dbg(dev, "%s: gpio[%s] = %d\n", __func__, |
| 1721 | pin_data->gpio_data->gpio[i].name, |
| 1722 | pin_data->gpio_data->gpio[i].no); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1723 | } |
| 1724 | } |
Sahitya Tummala | 1cd7e07 | 2014-02-14 13:19:01 +0530 | [diff] [blame] | 1725 | pdata->pin_data = pin_data; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1726 | out: |
| 1727 | if (ret) |
| 1728 | dev_err(dev, "%s failed with err %d\n", __func__, ret); |
| 1729 | return ret; |
| 1730 | } |
| 1731 | |
Krishna Konda | f85e31a | 2015-10-23 11:43:02 -0700 | [diff] [blame] | 1732 | #ifdef CONFIG_SMP |
| 1733 | static inline void parse_affine_irq(struct sdhci_msm_pltfm_data *pdata) |
| 1734 | { |
| 1735 | pdata->pm_qos_data.irq_req_type = PM_QOS_REQ_AFFINE_IRQ; |
| 1736 | } |
| 1737 | #else |
| 1738 | static inline void parse_affine_irq(struct sdhci_msm_pltfm_data *pdata) { } |
| 1739 | #endif |
| 1740 | |
Gilad Broner | c788a67 | 2015-09-08 15:39:11 +0300 | [diff] [blame] | 1741 | static int sdhci_msm_pm_qos_parse_irq(struct device *dev, |
| 1742 | struct sdhci_msm_pltfm_data *pdata) |
| 1743 | { |
| 1744 | struct device_node *np = dev->of_node; |
| 1745 | const char *str; |
| 1746 | u32 cpu; |
| 1747 | int ret = 0; |
| 1748 | int i; |
| 1749 | |
| 1750 | pdata->pm_qos_data.irq_valid = false; |
| 1751 | pdata->pm_qos_data.irq_req_type = PM_QOS_REQ_AFFINE_CORES; |
| 1752 | if (!of_property_read_string(np, "qcom,pm-qos-irq-type", &str) && |
| 1753 | !strcmp(str, "affine_irq")) { |
Krishna Konda | f85e31a | 2015-10-23 11:43:02 -0700 | [diff] [blame] | 1754 | parse_affine_irq(pdata); |
Gilad Broner | c788a67 | 2015-09-08 15:39:11 +0300 | [diff] [blame] | 1755 | } |
| 1756 | |
| 1757 | /* must specify cpu for "affine_cores" type */ |
| 1758 | if (pdata->pm_qos_data.irq_req_type == PM_QOS_REQ_AFFINE_CORES) { |
| 1759 | pdata->pm_qos_data.irq_cpu = -1; |
| 1760 | ret = of_property_read_u32(np, "qcom,pm-qos-irq-cpu", &cpu); |
| 1761 | if (ret) { |
| 1762 | dev_err(dev, "%s: error %d reading irq cpu\n", __func__, |
| 1763 | ret); |
| 1764 | goto out; |
| 1765 | } |
| 1766 | if (cpu < 0 || cpu >= num_possible_cpus()) { |
| 1767 | dev_err(dev, "%s: invalid irq cpu %d (NR_CPUS=%d)\n", |
| 1768 | __func__, cpu, num_possible_cpus()); |
| 1769 | ret = -EINVAL; |
| 1770 | goto out; |
| 1771 | } |
| 1772 | pdata->pm_qos_data.irq_cpu = cpu; |
| 1773 | } |
| 1774 | |
| 1775 | if (of_property_count_u32_elems(np, "qcom,pm-qos-irq-latency") != |
| 1776 | SDHCI_POWER_POLICY_NUM) { |
| 1777 | dev_err(dev, "%s: could not read %d values for 'qcom,pm-qos-irq-latency'\n", |
| 1778 | __func__, SDHCI_POWER_POLICY_NUM); |
| 1779 | ret = -EINVAL; |
| 1780 | goto out; |
| 1781 | } |
| 1782 | |
| 1783 | for (i = 0; i < SDHCI_POWER_POLICY_NUM; i++) |
| 1784 | of_property_read_u32_index(np, "qcom,pm-qos-irq-latency", i, |
| 1785 | &pdata->pm_qos_data.irq_latency.latency[i]); |
| 1786 | |
| 1787 | pdata->pm_qos_data.irq_valid = true; |
| 1788 | out: |
| 1789 | return ret; |
| 1790 | } |
| 1791 | |
| 1792 | static int sdhci_msm_pm_qos_parse_cpu_groups(struct device *dev, |
| 1793 | struct sdhci_msm_pltfm_data *pdata) |
| 1794 | { |
| 1795 | struct device_node *np = dev->of_node; |
| 1796 | u32 mask; |
| 1797 | int nr_groups; |
| 1798 | int ret; |
| 1799 | int i; |
| 1800 | |
| 1801 | /* Read cpu group mapping */ |
| 1802 | nr_groups = of_property_count_u32_elems(np, "qcom,pm-qos-cpu-groups"); |
| 1803 | if (nr_groups <= 0) { |
| 1804 | ret = -EINVAL; |
| 1805 | goto out; |
| 1806 | } |
| 1807 | pdata->pm_qos_data.cpu_group_map.nr_groups = nr_groups; |
| 1808 | pdata->pm_qos_data.cpu_group_map.mask = |
| 1809 | kcalloc(nr_groups, sizeof(cpumask_t), GFP_KERNEL); |
| 1810 | if (!pdata->pm_qos_data.cpu_group_map.mask) { |
| 1811 | ret = -ENOMEM; |
| 1812 | goto out; |
| 1813 | } |
| 1814 | |
| 1815 | for (i = 0; i < nr_groups; i++) { |
| 1816 | of_property_read_u32_index(np, "qcom,pm-qos-cpu-groups", |
| 1817 | i, &mask); |
| 1818 | |
| 1819 | pdata->pm_qos_data.cpu_group_map.mask[i].bits[0] = mask; |
| 1820 | if (!cpumask_subset(&pdata->pm_qos_data.cpu_group_map.mask[i], |
| 1821 | cpu_possible_mask)) { |
| 1822 | dev_err(dev, "%s: invalid mask 0x%x of cpu group #%d\n", |
| 1823 | __func__, mask, i); |
| 1824 | ret = -EINVAL; |
| 1825 | goto free_res; |
| 1826 | } |
| 1827 | } |
| 1828 | return 0; |
| 1829 | |
| 1830 | free_res: |
| 1831 | kfree(pdata->pm_qos_data.cpu_group_map.mask); |
| 1832 | out: |
| 1833 | return ret; |
| 1834 | } |
| 1835 | |
| 1836 | static int sdhci_msm_pm_qos_parse_latency(struct device *dev, const char *name, |
| 1837 | int nr_groups, struct sdhci_msm_pm_qos_latency **latency) |
| 1838 | { |
| 1839 | struct device_node *np = dev->of_node; |
| 1840 | struct sdhci_msm_pm_qos_latency *values; |
| 1841 | int ret; |
| 1842 | int i; |
| 1843 | int group; |
| 1844 | int cfg; |
| 1845 | |
| 1846 | ret = of_property_count_u32_elems(np, name); |
| 1847 | if (ret > 0 && ret != SDHCI_POWER_POLICY_NUM * nr_groups) { |
| 1848 | dev_err(dev, "%s: invalid number of values for property %s: expected=%d actual=%d\n", |
| 1849 | __func__, name, SDHCI_POWER_POLICY_NUM * nr_groups, |
| 1850 | ret); |
| 1851 | return -EINVAL; |
| 1852 | } else if (ret < 0) { |
| 1853 | return ret; |
| 1854 | } |
| 1855 | |
| 1856 | values = kcalloc(nr_groups, sizeof(struct sdhci_msm_pm_qos_latency), |
| 1857 | GFP_KERNEL); |
| 1858 | if (!values) |
| 1859 | return -ENOMEM; |
| 1860 | |
| 1861 | for (i = 0; i < SDHCI_POWER_POLICY_NUM * nr_groups; i++) { |
| 1862 | group = i / SDHCI_POWER_POLICY_NUM; |
| 1863 | cfg = i % SDHCI_POWER_POLICY_NUM; |
| 1864 | of_property_read_u32_index(np, name, i, |
| 1865 | &(values[group].latency[cfg])); |
| 1866 | } |
| 1867 | |
| 1868 | *latency = values; |
| 1869 | return 0; |
| 1870 | } |
| 1871 | |
| 1872 | static void sdhci_msm_pm_qos_parse(struct device *dev, |
| 1873 | struct sdhci_msm_pltfm_data *pdata) |
| 1874 | { |
| 1875 | if (sdhci_msm_pm_qos_parse_irq(dev, pdata)) |
| 1876 | dev_notice(dev, "%s: PM QoS voting for IRQ will be disabled\n", |
| 1877 | __func__); |
| 1878 | |
| 1879 | if (!sdhci_msm_pm_qos_parse_cpu_groups(dev, pdata)) { |
| 1880 | pdata->pm_qos_data.cmdq_valid = |
| 1881 | !sdhci_msm_pm_qos_parse_latency(dev, |
| 1882 | "qcom,pm-qos-cmdq-latency-us", |
| 1883 | pdata->pm_qos_data.cpu_group_map.nr_groups, |
| 1884 | &pdata->pm_qos_data.cmdq_latency); |
| 1885 | pdata->pm_qos_data.legacy_valid = |
| 1886 | !sdhci_msm_pm_qos_parse_latency(dev, |
| 1887 | "qcom,pm-qos-legacy-latency-us", |
| 1888 | pdata->pm_qos_data.cpu_group_map.nr_groups, |
| 1889 | &pdata->pm_qos_data.latency); |
| 1890 | if (!pdata->pm_qos_data.cmdq_valid && |
| 1891 | !pdata->pm_qos_data.legacy_valid) { |
| 1892 | /* clean-up previously allocated arrays */ |
| 1893 | kfree(pdata->pm_qos_data.latency); |
| 1894 | kfree(pdata->pm_qos_data.cmdq_latency); |
| 1895 | dev_err(dev, "%s: invalid PM QoS latency values. Voting for cpu group will be disabled\n", |
| 1896 | __func__); |
| 1897 | } |
| 1898 | } else { |
| 1899 | dev_notice(dev, "%s: PM QoS voting for cpu group will be disabled\n", |
| 1900 | __func__); |
| 1901 | } |
| 1902 | } |
| 1903 | |
Asutosh Das | 1c43b13 | 2018-01-11 18:08:40 +0530 | [diff] [blame] | 1904 | #ifdef CONFIG_NVMEM |
| 1905 | /* Parse qfprom data for deciding on errata work-arounds */ |
| 1906 | static long qfprom_read(struct device *dev, const char *name) |
| 1907 | { |
| 1908 | struct nvmem_cell *cell; |
| 1909 | ssize_t len = 0; |
| 1910 | u32 *buf, val = 0; |
| 1911 | long err = 0; |
| 1912 | |
| 1913 | cell = nvmem_cell_get(dev, name); |
| 1914 | if (IS_ERR(cell)) { |
| 1915 | err = PTR_ERR(cell); |
| 1916 | dev_err(dev, "failed opening nvmem cell err : %ld\n", err); |
| 1917 | /* If entry does not exist, then that is not an error */ |
| 1918 | if (err == -ENOENT) |
| 1919 | err = 0; |
| 1920 | return err; |
| 1921 | } |
| 1922 | |
| 1923 | buf = (u32 *)nvmem_cell_read(cell, &len); |
| 1924 | if (IS_ERR(buf) || !len) { |
| 1925 | dev_err(dev, "Failed reading nvmem cell, err: %u, bytes fetched: %zd\n", |
| 1926 | *buf, len); |
| 1927 | if (!IS_ERR(buf)) { |
| 1928 | kfree(buf); |
| 1929 | err = -EINVAL; |
| 1930 | } else { |
| 1931 | err = PTR_ERR(buf); |
| 1932 | } |
| 1933 | } else { |
Asutosh Das | b8614aa | 2018-01-31 15:44:15 +0530 | [diff] [blame] | 1934 | /* |
| 1935 | * 30 bits from bit offset 0 would be read. |
| 1936 | * We're interested in bits 28:29 |
| 1937 | */ |
| 1938 | val = (*buf >> 28) & 0x3; |
Asutosh Das | 1c43b13 | 2018-01-11 18:08:40 +0530 | [diff] [blame] | 1939 | kfree(buf); |
| 1940 | } |
| 1941 | |
| 1942 | nvmem_cell_put(cell); |
| 1943 | return err ? err : (long) val; |
| 1944 | } |
| 1945 | |
| 1946 | /* Reads the SoC version */ |
| 1947 | static int sdhci_msm_get_socrev(struct device *dev, |
| 1948 | struct sdhci_msm_host *msm_host) |
| 1949 | { |
| 1950 | |
| 1951 | msm_host->soc_min_rev = qfprom_read(dev, "minor_rev"); |
| 1952 | |
| 1953 | if (msm_host->soc_min_rev < 0) |
| 1954 | dev_err(dev, "failed getting soc_min_rev, err : %d\n", |
| 1955 | msm_host->soc_min_rev); |
| 1956 | return msm_host->soc_min_rev; |
| 1957 | } |
| 1958 | #else |
| 1959 | /* Reads the SoC version */ |
| 1960 | static int sdhci_msm_get_socrev(struct device *dev, |
| 1961 | struct sdhci_msm_host *msm_host) |
| 1962 | { |
| 1963 | return 0; |
| 1964 | } |
| 1965 | #endif |
| 1966 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1967 | /* Parse platform data */ |
Dov Levenglick | c9033ab | 2015-03-10 16:00:56 +0200 | [diff] [blame] | 1968 | static |
| 1969 | struct sdhci_msm_pltfm_data *sdhci_msm_populate_pdata(struct device *dev, |
| 1970 | struct sdhci_msm_host *msm_host) |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1971 | { |
| 1972 | struct sdhci_msm_pltfm_data *pdata = NULL; |
| 1973 | struct device_node *np = dev->of_node; |
| 1974 | u32 bus_width = 0; |
| 1975 | int len, i; |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 1976 | int clk_table_len; |
| 1977 | u32 *clk_table = NULL; |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 1978 | int ice_clk_table_len; |
| 1979 | u32 *ice_clk_table = NULL; |
Sujit Reddy Thumma | 1958d3d | 2013-06-03 09:54:32 +0530 | [diff] [blame] | 1980 | enum of_gpio_flags flags = OF_GPIO_ACTIVE_LOW; |
Sahitya Tummala | 08d3caf | 2015-07-23 13:05:54 +0530 | [diff] [blame] | 1981 | const char *lower_bus_speed = NULL; |
Vijay Viswanath | c9e2c0f | 2017-11-09 15:43:25 +0530 | [diff] [blame] | 1982 | int bus_clk_table_len; |
| 1983 | u32 *bus_clk_table = NULL; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1984 | |
| 1985 | pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); |
| 1986 | if (!pdata) { |
| 1987 | dev_err(dev, "failed to allocate memory for platform data\n"); |
| 1988 | goto out; |
| 1989 | } |
| 1990 | |
Sujit Reddy Thumma | 1958d3d | 2013-06-03 09:54:32 +0530 | [diff] [blame] | 1991 | pdata->status_gpio = of_get_named_gpio_flags(np, "cd-gpios", 0, &flags); |
Bao D. Nguyen | 0f5ac95 | 2017-06-14 12:42:41 -0700 | [diff] [blame] | 1992 | if (gpio_is_valid(pdata->status_gpio) && !(flags & OF_GPIO_ACTIVE_LOW)) |
Sujit Reddy Thumma | 1958d3d | 2013-06-03 09:54:32 +0530 | [diff] [blame] | 1993 | pdata->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH; |
Sahitya Tummala | 581df13 | 2013-03-12 14:57:46 +0530 | [diff] [blame] | 1994 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 1995 | of_property_read_u32(np, "qcom,bus-width", &bus_width); |
| 1996 | if (bus_width == 8) |
| 1997 | pdata->mmc_bus_width = MMC_CAP_8_BIT_DATA; |
| 1998 | else if (bus_width == 4) |
| 1999 | pdata->mmc_bus_width = MMC_CAP_4_BIT_DATA; |
| 2000 | else { |
| 2001 | dev_notice(dev, "invalid bus-width, default to 1-bit mode\n"); |
| 2002 | pdata->mmc_bus_width = 0; |
| 2003 | } |
| 2004 | |
Talel Shenhar | 7dc5f79 | 2015-05-18 12:12:48 +0300 | [diff] [blame] | 2005 | if (sdhci_msm_dt_get_array(dev, "qcom,devfreq,freq-table", |
Veerabhadrarao Badiganti | e5bab46 | 2017-05-30 20:34:46 +0530 | [diff] [blame] | 2006 | &msm_host->mmc->clk_scaling.pltfm_freq_table, |
| 2007 | &msm_host->mmc->clk_scaling.pltfm_freq_table_sz, 0)) |
Talel Shenhar | 7dc5f79 | 2015-05-18 12:12:48 +0300 | [diff] [blame] | 2008 | pr_debug("%s: no clock scaling frequencies were supplied\n", |
| 2009 | dev_name(dev)); |
Veerabhadrarao Badiganti | e5bab46 | 2017-05-30 20:34:46 +0530 | [diff] [blame] | 2010 | else if (!msm_host->mmc->clk_scaling.pltfm_freq_table || |
| 2011 | !msm_host->mmc->clk_scaling.pltfm_freq_table_sz) |
| 2012 | dev_err(dev, "bad dts clock scaling frequencies\n"); |
Talel Shenhar | 7dc5f79 | 2015-05-18 12:12:48 +0300 | [diff] [blame] | 2013 | |
Sahitya Tummala | 08d3caf | 2015-07-23 13:05:54 +0530 | [diff] [blame] | 2014 | /* |
| 2015 | * Few hosts can support DDR52 mode at the same lower |
| 2016 | * system voltage corner as high-speed mode. In such cases, |
| 2017 | * it is always better to put it in DDR mode which will |
| 2018 | * improve the performance without any power impact. |
| 2019 | */ |
| 2020 | if (!of_property_read_string(np, "qcom,scaling-lower-bus-speed-mode", |
| 2021 | &lower_bus_speed)) { |
| 2022 | if (!strcmp(lower_bus_speed, "DDR52")) |
| 2023 | msm_host->mmc->clk_scaling.lower_bus_speed_mode |= |
| 2024 | MMC_SCALING_LOWER_DDR52_MODE; |
| 2025 | } |
| 2026 | |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 2027 | if (sdhci_msm_dt_get_array(dev, "qcom,clk-rates", |
| 2028 | &clk_table, &clk_table_len, 0)) { |
| 2029 | dev_err(dev, "failed parsing supported clock rates\n"); |
| 2030 | goto out; |
| 2031 | } |
| 2032 | if (!clk_table || !clk_table_len) { |
| 2033 | dev_err(dev, "Invalid clock table\n"); |
| 2034 | goto out; |
| 2035 | } |
| 2036 | pdata->sup_clk_table = clk_table; |
| 2037 | pdata->sup_clk_cnt = clk_table_len; |
| 2038 | |
Vijay Viswanath | c9e2c0f | 2017-11-09 15:43:25 +0530 | [diff] [blame] | 2039 | if (!sdhci_msm_dt_get_array(dev, "qcom,bus-aggr-clk-rates", |
| 2040 | &bus_clk_table, &bus_clk_table_len, 0)) { |
| 2041 | if (bus_clk_table && bus_clk_table_len) { |
| 2042 | pdata->bus_clk_table = bus_clk_table; |
| 2043 | pdata->bus_clk_cnt = bus_clk_table_len; |
| 2044 | } |
| 2045 | } |
| 2046 | |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 2047 | if (msm_host->ice.pdev) { |
| 2048 | if (sdhci_msm_dt_get_array(dev, "qcom,ice-clk-rates", |
| 2049 | &ice_clk_table, &ice_clk_table_len, 0)) { |
| 2050 | dev_err(dev, "failed parsing supported ice clock rates\n"); |
| 2051 | goto out; |
| 2052 | } |
| 2053 | if (!ice_clk_table || !ice_clk_table_len) { |
| 2054 | dev_err(dev, "Invalid clock table\n"); |
| 2055 | goto out; |
| 2056 | } |
Sahitya Tummala | 073ca55 | 2015-08-06 13:59:37 +0530 | [diff] [blame] | 2057 | if (ice_clk_table_len != 2) { |
| 2058 | dev_err(dev, "Need max and min frequencies in the table\n"); |
| 2059 | goto out; |
| 2060 | } |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 2061 | pdata->sup_ice_clk_table = ice_clk_table; |
| 2062 | pdata->sup_ice_clk_cnt = ice_clk_table_len; |
Sahitya Tummala | 073ca55 | 2015-08-06 13:59:37 +0530 | [diff] [blame] | 2063 | pdata->ice_clk_max = pdata->sup_ice_clk_table[0]; |
| 2064 | pdata->ice_clk_min = pdata->sup_ice_clk_table[1]; |
| 2065 | dev_dbg(dev, "supported ICE clock rates (Hz): max: %u min: %u\n", |
| 2066 | pdata->ice_clk_max, pdata->ice_clk_min); |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 2067 | } |
| 2068 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2069 | pdata->vreg_data = devm_kzalloc(dev, sizeof(struct |
| 2070 | sdhci_msm_slot_reg_data), |
| 2071 | GFP_KERNEL); |
| 2072 | if (!pdata->vreg_data) { |
| 2073 | dev_err(dev, "failed to allocate memory for vreg data\n"); |
| 2074 | goto out; |
| 2075 | } |
| 2076 | |
| 2077 | if (sdhci_msm_dt_parse_vreg_info(dev, &pdata->vreg_data->vdd_data, |
| 2078 | "vdd")) { |
| 2079 | dev_err(dev, "failed parsing vdd data\n"); |
| 2080 | goto out; |
| 2081 | } |
| 2082 | if (sdhci_msm_dt_parse_vreg_info(dev, |
| 2083 | &pdata->vreg_data->vdd_io_data, |
| 2084 | "vdd-io")) { |
| 2085 | dev_err(dev, "failed parsing vdd-io data\n"); |
| 2086 | goto out; |
| 2087 | } |
| 2088 | |
| 2089 | if (sdhci_msm_dt_parse_gpio_info(dev, pdata)) { |
| 2090 | dev_err(dev, "failed parsing gpio data\n"); |
| 2091 | goto out; |
| 2092 | } |
| 2093 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2094 | len = of_property_count_strings(np, "qcom,bus-speed-mode"); |
| 2095 | |
| 2096 | for (i = 0; i < len; i++) { |
| 2097 | const char *name = NULL; |
| 2098 | |
| 2099 | of_property_read_string_index(np, |
| 2100 | "qcom,bus-speed-mode", i, &name); |
| 2101 | if (!name) |
| 2102 | continue; |
| 2103 | |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 2104 | if (!strncmp(name, "HS400_1p8v", sizeof("HS400_1p8v"))) |
| 2105 | pdata->caps2 |= MMC_CAP2_HS400_1_8V; |
| 2106 | else if (!strncmp(name, "HS400_1p2v", sizeof("HS400_1p2v"))) |
| 2107 | pdata->caps2 |= MMC_CAP2_HS400_1_2V; |
| 2108 | else if (!strncmp(name, "HS200_1p8v", sizeof("HS200_1p8v"))) |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2109 | pdata->caps2 |= MMC_CAP2_HS200_1_8V_SDR; |
| 2110 | else if (!strncmp(name, "HS200_1p2v", sizeof("HS200_1p2v"))) |
| 2111 | pdata->caps2 |= MMC_CAP2_HS200_1_2V_SDR; |
| 2112 | else if (!strncmp(name, "DDR_1p8v", sizeof("DDR_1p8v"))) |
| 2113 | pdata->caps |= MMC_CAP_1_8V_DDR |
| 2114 | | MMC_CAP_UHS_DDR50; |
| 2115 | else if (!strncmp(name, "DDR_1p2v", sizeof("DDR_1p2v"))) |
| 2116 | pdata->caps |= MMC_CAP_1_2V_DDR |
| 2117 | | MMC_CAP_UHS_DDR50; |
| 2118 | } |
| 2119 | |
| 2120 | if (of_get_property(np, "qcom,nonremovable", NULL)) |
| 2121 | pdata->nonremovable = true; |
| 2122 | |
Guoping Yu | f7c9133 | 2014-08-20 16:56:18 +0800 | [diff] [blame] | 2123 | if (of_get_property(np, "qcom,nonhotplug", NULL)) |
| 2124 | pdata->nonhotplug = true; |
| 2125 | |
Venkat Gopalakrishnan | 9a62e04 | 2015-03-03 16:14:55 -0800 | [diff] [blame] | 2126 | pdata->largeaddressbus = |
| 2127 | of_property_read_bool(np, "qcom,large-address-bus"); |
| 2128 | |
Dov Levenglick | c9033ab | 2015-03-10 16:00:56 +0200 | [diff] [blame] | 2129 | if (of_property_read_bool(np, "qcom,wakeup-on-idle")) |
| 2130 | msm_host->mmc->wakeup_on_idle = true; |
| 2131 | |
Gilad Broner | c788a67 | 2015-09-08 15:39:11 +0300 | [diff] [blame] | 2132 | sdhci_msm_pm_qos_parse(dev, pdata); |
| 2133 | |
Pavan Anamula | 5a256df | 2015-10-16 14:38:28 +0530 | [diff] [blame] | 2134 | if (of_get_property(np, "qcom,core_3_0v_support", NULL)) |
Veerabhadrarao Badiganti | ac24b40 | 2017-03-07 06:30:13 +0530 | [diff] [blame] | 2135 | msm_host->core_3_0v_support = true; |
Pavan Anamula | 5a256df | 2015-10-16 14:38:28 +0530 | [diff] [blame] | 2136 | |
Subhash Jadavani | 7ae9c2c | 2017-03-31 16:50:59 -0700 | [diff] [blame] | 2137 | pdata->sdr104_wa = of_property_read_bool(np, "qcom,sdr104-wa"); |
Bao D. Nguyen | 6fa49fe | 2017-06-29 20:38:49 -0700 | [diff] [blame] | 2138 | msm_host->regs_restore.is_supported = |
| 2139 | of_property_read_bool(np, "qcom,restore-after-cx-collapse"); |
Subhash Jadavani | 7ae9c2c | 2017-03-31 16:50:59 -0700 | [diff] [blame] | 2140 | |
Vijay Viswanath | a549261 | 2017-10-17 15:38:55 +0530 | [diff] [blame] | 2141 | if (!of_property_read_u32(np, "qcom,ddr-config", &pdata->ddr_config)) |
| 2142 | pdata->rclk_wa = true; |
| 2143 | |
Asutosh Das | 1c43b13 | 2018-01-11 18:08:40 +0530 | [diff] [blame] | 2144 | /* |
| 2145 | * rclk_wa is not required if soc version is mentioned and |
| 2146 | * is not base version. |
| 2147 | */ |
| 2148 | if (msm_host->soc_min_rev != 0) |
| 2149 | pdata->rclk_wa = false; |
| 2150 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2151 | return pdata; |
| 2152 | out: |
| 2153 | return NULL; |
| 2154 | } |
| 2155 | |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 2156 | /* Returns required bandwidth in Bytes per Sec */ |
| 2157 | static unsigned int sdhci_get_bw_required(struct sdhci_host *host, |
| 2158 | struct mmc_ios *ios) |
| 2159 | { |
Sahitya Tummala | 2886c92 | 2013-04-03 18:03:31 +0530 | [diff] [blame] | 2160 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 2161 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 2162 | |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 2163 | unsigned int bw; |
| 2164 | |
Sahitya Tummala | 2886c92 | 2013-04-03 18:03:31 +0530 | [diff] [blame] | 2165 | bw = msm_host->clk_rate; |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 2166 | /* |
| 2167 | * For DDR mode, SDCC controller clock will be at |
| 2168 | * the double rate than the actual clock that goes to card. |
| 2169 | */ |
| 2170 | if (ios->bus_width == MMC_BUS_WIDTH_4) |
| 2171 | bw /= 2; |
| 2172 | else if (ios->bus_width == MMC_BUS_WIDTH_1) |
| 2173 | bw /= 8; |
| 2174 | |
| 2175 | return bw; |
| 2176 | } |
| 2177 | |
| 2178 | static int sdhci_msm_bus_get_vote_for_bw(struct sdhci_msm_host *host, |
| 2179 | unsigned int bw) |
| 2180 | { |
| 2181 | unsigned int *table = host->pdata->voting_data->bw_vecs; |
| 2182 | unsigned int size = host->pdata->voting_data->bw_vecs_size; |
| 2183 | int i; |
| 2184 | |
| 2185 | if (host->msm_bus_vote.is_max_bw_needed && bw) |
| 2186 | return host->msm_bus_vote.max_bw_vote; |
| 2187 | |
| 2188 | for (i = 0; i < size; i++) { |
| 2189 | if (bw <= table[i]) |
| 2190 | break; |
| 2191 | } |
| 2192 | |
| 2193 | if (i && (i == size)) |
| 2194 | i--; |
| 2195 | |
| 2196 | return i; |
| 2197 | } |
| 2198 | |
| 2199 | /* |
| 2200 | * This function must be called with host lock acquired. |
| 2201 | * Caller of this function should also ensure that msm bus client |
| 2202 | * handle is not null. |
| 2203 | */ |
| 2204 | static inline int sdhci_msm_bus_set_vote(struct sdhci_msm_host *msm_host, |
| 2205 | int vote, |
Sujit Reddy Thumma | 024c058 | 2013-08-06 11:21:33 +0530 | [diff] [blame] | 2206 | unsigned long *flags) |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 2207 | { |
| 2208 | struct sdhci_host *host = platform_get_drvdata(msm_host->pdev); |
| 2209 | int rc = 0; |
| 2210 | |
Sujit Reddy Thumma | 024c058 | 2013-08-06 11:21:33 +0530 | [diff] [blame] | 2211 | BUG_ON(!flags); |
| 2212 | |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 2213 | if (vote != msm_host->msm_bus_vote.curr_vote) { |
Sujit Reddy Thumma | 024c058 | 2013-08-06 11:21:33 +0530 | [diff] [blame] | 2214 | spin_unlock_irqrestore(&host->lock, *flags); |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 2215 | rc = msm_bus_scale_client_update_request( |
| 2216 | msm_host->msm_bus_vote.client_handle, vote); |
Sujit Reddy Thumma | 024c058 | 2013-08-06 11:21:33 +0530 | [diff] [blame] | 2217 | spin_lock_irqsave(&host->lock, *flags); |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 2218 | if (rc) { |
| 2219 | pr_err("%s: msm_bus_scale_client_update_request() failed: bus_client_handle=0x%x, vote=%d, err=%d\n", |
| 2220 | mmc_hostname(host->mmc), |
| 2221 | msm_host->msm_bus_vote.client_handle, vote, rc); |
| 2222 | goto out; |
| 2223 | } |
| 2224 | msm_host->msm_bus_vote.curr_vote = vote; |
| 2225 | } |
| 2226 | out: |
| 2227 | return rc; |
| 2228 | } |
| 2229 | |
| 2230 | /* |
| 2231 | * Internal work. Work to set 0 bandwidth for msm bus. |
| 2232 | */ |
| 2233 | static void sdhci_msm_bus_work(struct work_struct *work) |
| 2234 | { |
| 2235 | struct sdhci_msm_host *msm_host; |
| 2236 | struct sdhci_host *host; |
| 2237 | unsigned long flags; |
| 2238 | |
| 2239 | msm_host = container_of(work, struct sdhci_msm_host, |
| 2240 | msm_bus_vote.vote_work.work); |
| 2241 | host = platform_get_drvdata(msm_host->pdev); |
| 2242 | |
| 2243 | if (!msm_host->msm_bus_vote.client_handle) |
| 2244 | return; |
| 2245 | |
| 2246 | spin_lock_irqsave(&host->lock, flags); |
| 2247 | /* don't vote for 0 bandwidth if any request is in progress */ |
| 2248 | if (!host->mrq) { |
| 2249 | sdhci_msm_bus_set_vote(msm_host, |
Sujit Reddy Thumma | 024c058 | 2013-08-06 11:21:33 +0530 | [diff] [blame] | 2250 | msm_host->msm_bus_vote.min_bw_vote, &flags); |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 2251 | } else |
| 2252 | pr_warning("%s: %s: Transfer in progress. skipping bus voting to 0 bandwidth\n", |
| 2253 | mmc_hostname(host->mmc), __func__); |
| 2254 | spin_unlock_irqrestore(&host->lock, flags); |
| 2255 | } |
| 2256 | |
| 2257 | /* |
| 2258 | * This function cancels any scheduled delayed work and sets the bus |
| 2259 | * vote based on bw (bandwidth) argument. |
| 2260 | */ |
| 2261 | static void sdhci_msm_bus_cancel_work_and_set_vote(struct sdhci_host *host, |
| 2262 | unsigned int bw) |
| 2263 | { |
| 2264 | int vote; |
| 2265 | unsigned long flags; |
| 2266 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 2267 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 2268 | |
| 2269 | cancel_delayed_work_sync(&msm_host->msm_bus_vote.vote_work); |
| 2270 | spin_lock_irqsave(&host->lock, flags); |
| 2271 | vote = sdhci_msm_bus_get_vote_for_bw(msm_host, bw); |
Sujit Reddy Thumma | 024c058 | 2013-08-06 11:21:33 +0530 | [diff] [blame] | 2272 | sdhci_msm_bus_set_vote(msm_host, vote, &flags); |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 2273 | spin_unlock_irqrestore(&host->lock, flags); |
| 2274 | } |
| 2275 | |
| 2276 | #define MSM_MMC_BUS_VOTING_DELAY 200 /* msecs */ |
| 2277 | |
| 2278 | /* This function queues a work which will set the bandwidth requiement to 0 */ |
| 2279 | static void sdhci_msm_bus_queue_work(struct sdhci_host *host) |
| 2280 | { |
| 2281 | unsigned long flags; |
| 2282 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 2283 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 2284 | |
| 2285 | spin_lock_irqsave(&host->lock, flags); |
| 2286 | if (msm_host->msm_bus_vote.min_bw_vote != |
| 2287 | msm_host->msm_bus_vote.curr_vote) |
| 2288 | queue_delayed_work(system_wq, |
| 2289 | &msm_host->msm_bus_vote.vote_work, |
| 2290 | msecs_to_jiffies(MSM_MMC_BUS_VOTING_DELAY)); |
| 2291 | spin_unlock_irqrestore(&host->lock, flags); |
| 2292 | } |
| 2293 | |
| 2294 | static int sdhci_msm_bus_register(struct sdhci_msm_host *host, |
| 2295 | struct platform_device *pdev) |
| 2296 | { |
| 2297 | int rc = 0; |
| 2298 | struct msm_bus_scale_pdata *bus_pdata; |
| 2299 | |
| 2300 | struct sdhci_msm_bus_voting_data *data; |
| 2301 | struct device *dev = &pdev->dev; |
| 2302 | |
| 2303 | data = devm_kzalloc(dev, |
| 2304 | sizeof(struct sdhci_msm_bus_voting_data), GFP_KERNEL); |
| 2305 | if (!data) { |
| 2306 | dev_err(&pdev->dev, |
| 2307 | "%s: failed to allocate memory\n", __func__); |
| 2308 | rc = -ENOMEM; |
| 2309 | goto out; |
| 2310 | } |
| 2311 | data->bus_pdata = msm_bus_cl_get_pdata(pdev); |
| 2312 | if (data->bus_pdata) { |
| 2313 | rc = sdhci_msm_dt_get_array(dev, "qcom,bus-bw-vectors-bps", |
| 2314 | &data->bw_vecs, &data->bw_vecs_size, 0); |
| 2315 | if (rc) { |
| 2316 | dev_err(&pdev->dev, |
| 2317 | "%s: Failed to get bus-bw-vectors-bps\n", |
| 2318 | __func__); |
| 2319 | goto out; |
| 2320 | } |
| 2321 | host->pdata->voting_data = data; |
| 2322 | } |
| 2323 | if (host->pdata->voting_data && |
| 2324 | host->pdata->voting_data->bus_pdata && |
| 2325 | host->pdata->voting_data->bw_vecs && |
| 2326 | host->pdata->voting_data->bw_vecs_size) { |
| 2327 | |
| 2328 | bus_pdata = host->pdata->voting_data->bus_pdata; |
| 2329 | host->msm_bus_vote.client_handle = |
| 2330 | msm_bus_scale_register_client(bus_pdata); |
| 2331 | if (!host->msm_bus_vote.client_handle) { |
| 2332 | dev_err(&pdev->dev, "msm_bus_scale_register_client()\n"); |
| 2333 | rc = -EFAULT; |
| 2334 | goto out; |
| 2335 | } |
| 2336 | /* cache the vote index for minimum and maximum bandwidth */ |
| 2337 | host->msm_bus_vote.min_bw_vote = |
| 2338 | sdhci_msm_bus_get_vote_for_bw(host, 0); |
| 2339 | host->msm_bus_vote.max_bw_vote = |
| 2340 | sdhci_msm_bus_get_vote_for_bw(host, UINT_MAX); |
| 2341 | } else { |
| 2342 | devm_kfree(dev, data); |
| 2343 | } |
| 2344 | |
| 2345 | out: |
| 2346 | return rc; |
| 2347 | } |
| 2348 | |
| 2349 | static void sdhci_msm_bus_unregister(struct sdhci_msm_host *host) |
| 2350 | { |
| 2351 | if (host->msm_bus_vote.client_handle) |
| 2352 | msm_bus_scale_unregister_client( |
| 2353 | host->msm_bus_vote.client_handle); |
| 2354 | } |
| 2355 | |
| 2356 | static void sdhci_msm_bus_voting(struct sdhci_host *host, u32 enable) |
| 2357 | { |
| 2358 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 2359 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 2360 | struct mmc_ios *ios = &host->mmc->ios; |
| 2361 | unsigned int bw; |
| 2362 | |
| 2363 | if (!msm_host->msm_bus_vote.client_handle) |
| 2364 | return; |
| 2365 | |
| 2366 | bw = sdhci_get_bw_required(host, ios); |
Sahitya Tummala | 79edc6a | 2013-05-23 15:59:22 +0530 | [diff] [blame] | 2367 | if (enable) { |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 2368 | sdhci_msm_bus_cancel_work_and_set_vote(host, bw); |
Sahitya Tummala | 79edc6a | 2013-05-23 15:59:22 +0530 | [diff] [blame] | 2369 | } else { |
| 2370 | /* |
| 2371 | * If clock gating is enabled, then remove the vote |
| 2372 | * immediately because clocks will be disabled only |
| 2373 | * after SDHCI_MSM_MMC_CLK_GATE_DELAY and thus no |
| 2374 | * additional delay is required to remove the bus vote. |
| 2375 | */ |
| 2376 | #ifdef CONFIG_MMC_CLKGATE |
| 2377 | if (host->mmc->clkgate_delay) |
| 2378 | sdhci_msm_bus_cancel_work_and_set_vote(host, 0); |
| 2379 | else |
| 2380 | #endif |
| 2381 | sdhci_msm_bus_queue_work(host); |
| 2382 | } |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 2383 | } |
| 2384 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2385 | /* Regulator utility functions */ |
| 2386 | static int sdhci_msm_vreg_init_reg(struct device *dev, |
| 2387 | struct sdhci_msm_reg_data *vreg) |
| 2388 | { |
| 2389 | int ret = 0; |
| 2390 | |
| 2391 | /* check if regulator is already initialized? */ |
| 2392 | if (vreg->reg) |
| 2393 | goto out; |
| 2394 | |
| 2395 | /* Get the regulator handle */ |
| 2396 | vreg->reg = devm_regulator_get(dev, vreg->name); |
| 2397 | if (IS_ERR(vreg->reg)) { |
| 2398 | ret = PTR_ERR(vreg->reg); |
| 2399 | pr_err("%s: devm_regulator_get(%s) failed. ret=%d\n", |
| 2400 | __func__, vreg->name, ret); |
| 2401 | goto out; |
| 2402 | } |
| 2403 | |
Asutosh Das | c58cc7a | 2013-06-28 15:03:44 +0530 | [diff] [blame] | 2404 | if (regulator_count_voltages(vreg->reg) > 0) { |
| 2405 | vreg->set_voltage_sup = true; |
| 2406 | /* sanity check */ |
| 2407 | if (!vreg->high_vol_level || !vreg->hpm_uA) { |
| 2408 | pr_err("%s: %s invalid constraints specified\n", |
| 2409 | __func__, vreg->name); |
| 2410 | ret = -EINVAL; |
| 2411 | } |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2412 | } |
| 2413 | |
| 2414 | out: |
| 2415 | return ret; |
| 2416 | } |
| 2417 | |
| 2418 | static void sdhci_msm_vreg_deinit_reg(struct sdhci_msm_reg_data *vreg) |
| 2419 | { |
| 2420 | if (vreg->reg) |
| 2421 | devm_regulator_put(vreg->reg); |
| 2422 | } |
| 2423 | |
| 2424 | static int sdhci_msm_vreg_set_optimum_mode(struct sdhci_msm_reg_data |
| 2425 | *vreg, int uA_load) |
| 2426 | { |
| 2427 | int ret = 0; |
| 2428 | |
| 2429 | /* |
| 2430 | * regulators that do not support regulator_set_voltage also |
| 2431 | * do not support regulator_set_optimum_mode |
| 2432 | */ |
| 2433 | if (vreg->set_voltage_sup) { |
| 2434 | ret = regulator_set_load(vreg->reg, uA_load); |
| 2435 | if (ret < 0) |
| 2436 | pr_err("%s: regulator_set_load(reg=%s,uA_load=%d) failed. ret=%d\n", |
| 2437 | __func__, vreg->name, uA_load, ret); |
| 2438 | else |
| 2439 | /* |
| 2440 | * regulator_set_load() can return non zero |
| 2441 | * value even for success case. |
| 2442 | */ |
| 2443 | ret = 0; |
| 2444 | } |
| 2445 | return ret; |
| 2446 | } |
| 2447 | |
| 2448 | static int sdhci_msm_vreg_set_voltage(struct sdhci_msm_reg_data *vreg, |
| 2449 | int min_uV, int max_uV) |
| 2450 | { |
| 2451 | int ret = 0; |
Asutosh Das | c58cc7a | 2013-06-28 15:03:44 +0530 | [diff] [blame] | 2452 | if (vreg->set_voltage_sup) { |
| 2453 | ret = regulator_set_voltage(vreg->reg, min_uV, max_uV); |
| 2454 | if (ret) { |
| 2455 | pr_err("%s: regulator_set_voltage(%s)failed. min_uV=%d,max_uV=%d,ret=%d\n", |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2456 | __func__, vreg->name, min_uV, max_uV, ret); |
| 2457 | } |
Asutosh Das | c58cc7a | 2013-06-28 15:03:44 +0530 | [diff] [blame] | 2458 | } |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2459 | |
| 2460 | return ret; |
| 2461 | } |
| 2462 | |
| 2463 | static int sdhci_msm_vreg_enable(struct sdhci_msm_reg_data *vreg) |
| 2464 | { |
| 2465 | int ret = 0; |
| 2466 | |
| 2467 | /* Put regulator in HPM (high power mode) */ |
| 2468 | ret = sdhci_msm_vreg_set_optimum_mode(vreg, vreg->hpm_uA); |
| 2469 | if (ret < 0) |
| 2470 | return ret; |
| 2471 | |
| 2472 | if (!vreg->is_enabled) { |
| 2473 | /* Set voltage level */ |
| 2474 | ret = sdhci_msm_vreg_set_voltage(vreg, vreg->high_vol_level, |
| 2475 | vreg->high_vol_level); |
| 2476 | if (ret) |
| 2477 | return ret; |
| 2478 | } |
| 2479 | ret = regulator_enable(vreg->reg); |
| 2480 | if (ret) { |
| 2481 | pr_err("%s: regulator_enable(%s) failed. ret=%d\n", |
| 2482 | __func__, vreg->name, ret); |
| 2483 | return ret; |
| 2484 | } |
| 2485 | vreg->is_enabled = true; |
| 2486 | return ret; |
| 2487 | } |
| 2488 | |
| 2489 | static int sdhci_msm_vreg_disable(struct sdhci_msm_reg_data *vreg) |
| 2490 | { |
| 2491 | int ret = 0; |
| 2492 | |
| 2493 | /* Never disable regulator marked as always_on */ |
| 2494 | if (vreg->is_enabled && !vreg->is_always_on) { |
| 2495 | ret = regulator_disable(vreg->reg); |
| 2496 | if (ret) { |
| 2497 | pr_err("%s: regulator_disable(%s) failed. ret=%d\n", |
| 2498 | __func__, vreg->name, ret); |
| 2499 | goto out; |
| 2500 | } |
| 2501 | vreg->is_enabled = false; |
| 2502 | |
| 2503 | ret = sdhci_msm_vreg_set_optimum_mode(vreg, 0); |
| 2504 | if (ret < 0) |
| 2505 | goto out; |
| 2506 | |
| 2507 | /* Set min. voltage level to 0 */ |
| 2508 | ret = sdhci_msm_vreg_set_voltage(vreg, 0, vreg->high_vol_level); |
| 2509 | if (ret) |
| 2510 | goto out; |
| 2511 | } else if (vreg->is_enabled && vreg->is_always_on) { |
| 2512 | if (vreg->lpm_sup) { |
| 2513 | /* Put always_on regulator in LPM (low power mode) */ |
| 2514 | ret = sdhci_msm_vreg_set_optimum_mode(vreg, |
| 2515 | vreg->lpm_uA); |
| 2516 | if (ret < 0) |
| 2517 | goto out; |
| 2518 | } |
| 2519 | } |
| 2520 | out: |
| 2521 | return ret; |
| 2522 | } |
| 2523 | |
| 2524 | static int sdhci_msm_setup_vreg(struct sdhci_msm_pltfm_data *pdata, |
| 2525 | bool enable, bool is_init) |
| 2526 | { |
| 2527 | int ret = 0, i; |
| 2528 | struct sdhci_msm_slot_reg_data *curr_slot; |
| 2529 | struct sdhci_msm_reg_data *vreg_table[2]; |
| 2530 | |
| 2531 | curr_slot = pdata->vreg_data; |
| 2532 | if (!curr_slot) { |
| 2533 | pr_debug("%s: vreg info unavailable,assuming the slot is powered by always on domain\n", |
| 2534 | __func__); |
| 2535 | goto out; |
| 2536 | } |
| 2537 | |
| 2538 | vreg_table[0] = curr_slot->vdd_data; |
| 2539 | vreg_table[1] = curr_slot->vdd_io_data; |
| 2540 | |
| 2541 | for (i = 0; i < ARRAY_SIZE(vreg_table); i++) { |
| 2542 | if (vreg_table[i]) { |
| 2543 | if (enable) |
| 2544 | ret = sdhci_msm_vreg_enable(vreg_table[i]); |
| 2545 | else |
| 2546 | ret = sdhci_msm_vreg_disable(vreg_table[i]); |
| 2547 | if (ret) |
| 2548 | goto out; |
| 2549 | } |
| 2550 | } |
| 2551 | out: |
| 2552 | return ret; |
| 2553 | } |
| 2554 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2555 | /* This init function should be called only once for each SDHC slot */ |
| 2556 | static int sdhci_msm_vreg_init(struct device *dev, |
| 2557 | struct sdhci_msm_pltfm_data *pdata, |
| 2558 | bool is_init) |
| 2559 | { |
| 2560 | int ret = 0; |
| 2561 | struct sdhci_msm_slot_reg_data *curr_slot; |
| 2562 | struct sdhci_msm_reg_data *curr_vdd_reg, *curr_vdd_io_reg; |
| 2563 | |
| 2564 | curr_slot = pdata->vreg_data; |
| 2565 | if (!curr_slot) |
| 2566 | goto out; |
| 2567 | |
| 2568 | curr_vdd_reg = curr_slot->vdd_data; |
| 2569 | curr_vdd_io_reg = curr_slot->vdd_io_data; |
| 2570 | |
| 2571 | if (!is_init) |
| 2572 | /* Deregister all regulators from regulator framework */ |
| 2573 | goto vdd_io_reg_deinit; |
| 2574 | |
| 2575 | /* |
| 2576 | * Get the regulator handle from voltage regulator framework |
| 2577 | * and then try to set the voltage level for the regulator |
| 2578 | */ |
| 2579 | if (curr_vdd_reg) { |
| 2580 | ret = sdhci_msm_vreg_init_reg(dev, curr_vdd_reg); |
| 2581 | if (ret) |
| 2582 | goto out; |
| 2583 | } |
| 2584 | if (curr_vdd_io_reg) { |
| 2585 | ret = sdhci_msm_vreg_init_reg(dev, curr_vdd_io_reg); |
| 2586 | if (ret) |
| 2587 | goto vdd_reg_deinit; |
| 2588 | } |
Veerabhadrarao Badiganti | eed1dea | 2017-06-21 19:27:32 +0530 | [diff] [blame] | 2589 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2590 | if (ret) |
| 2591 | dev_err(dev, "vreg reset failed (%d)\n", ret); |
| 2592 | goto out; |
| 2593 | |
| 2594 | vdd_io_reg_deinit: |
| 2595 | if (curr_vdd_io_reg) |
| 2596 | sdhci_msm_vreg_deinit_reg(curr_vdd_io_reg); |
| 2597 | vdd_reg_deinit: |
| 2598 | if (curr_vdd_reg) |
| 2599 | sdhci_msm_vreg_deinit_reg(curr_vdd_reg); |
| 2600 | out: |
| 2601 | return ret; |
| 2602 | } |
| 2603 | |
| 2604 | |
| 2605 | static int sdhci_msm_set_vdd_io_vol(struct sdhci_msm_pltfm_data *pdata, |
| 2606 | enum vdd_io_level level, |
| 2607 | unsigned int voltage_level) |
| 2608 | { |
| 2609 | int ret = 0; |
| 2610 | int set_level; |
| 2611 | struct sdhci_msm_reg_data *vdd_io_reg; |
| 2612 | |
| 2613 | if (!pdata->vreg_data) |
| 2614 | return ret; |
| 2615 | |
| 2616 | vdd_io_reg = pdata->vreg_data->vdd_io_data; |
| 2617 | if (vdd_io_reg && vdd_io_reg->is_enabled) { |
| 2618 | switch (level) { |
| 2619 | case VDD_IO_LOW: |
| 2620 | set_level = vdd_io_reg->low_vol_level; |
| 2621 | break; |
| 2622 | case VDD_IO_HIGH: |
| 2623 | set_level = vdd_io_reg->high_vol_level; |
| 2624 | break; |
| 2625 | case VDD_IO_SET_LEVEL: |
| 2626 | set_level = voltage_level; |
| 2627 | break; |
| 2628 | default: |
| 2629 | pr_err("%s: invalid argument level = %d", |
| 2630 | __func__, level); |
| 2631 | ret = -EINVAL; |
| 2632 | return ret; |
| 2633 | } |
| 2634 | ret = sdhci_msm_vreg_set_voltage(vdd_io_reg, set_level, |
| 2635 | set_level); |
| 2636 | } |
| 2637 | return ret; |
| 2638 | } |
| 2639 | |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 2640 | /* |
| 2641 | * Acquire spin-lock host->lock before calling this function |
| 2642 | */ |
| 2643 | static void sdhci_msm_cfg_sdiowakeup_gpio_irq(struct sdhci_host *host, |
| 2644 | bool enable) |
| 2645 | { |
| 2646 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 2647 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 2648 | |
| 2649 | if (enable && !msm_host->is_sdiowakeup_enabled) |
| 2650 | enable_irq(msm_host->pdata->sdiowakeup_irq); |
| 2651 | else if (!enable && msm_host->is_sdiowakeup_enabled) |
| 2652 | disable_irq_nosync(msm_host->pdata->sdiowakeup_irq); |
| 2653 | else |
| 2654 | dev_warn(&msm_host->pdev->dev, "%s: wakeup to config: %d curr: %d\n", |
| 2655 | __func__, enable, msm_host->is_sdiowakeup_enabled); |
| 2656 | msm_host->is_sdiowakeup_enabled = enable; |
| 2657 | } |
| 2658 | |
| 2659 | static irqreturn_t sdhci_msm_sdiowakeup_irq(int irq, void *data) |
| 2660 | { |
| 2661 | struct sdhci_host *host = (struct sdhci_host *)data; |
Ritesh Harjani | b5c8e17 | 2015-12-17 19:59:04 +0530 | [diff] [blame] | 2662 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 2663 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 2664 | |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 2665 | unsigned long flags; |
| 2666 | |
| 2667 | pr_debug("%s: irq (%d) received\n", __func__, irq); |
| 2668 | |
| 2669 | spin_lock_irqsave(&host->lock, flags); |
| 2670 | sdhci_msm_cfg_sdiowakeup_gpio_irq(host, false); |
| 2671 | spin_unlock_irqrestore(&host->lock, flags); |
Ritesh Harjani | b5c8e17 | 2015-12-17 19:59:04 +0530 | [diff] [blame] | 2672 | msm_host->sdio_pending_processing = true; |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 2673 | |
| 2674 | return IRQ_HANDLED; |
| 2675 | } |
| 2676 | |
Pavan Anamula | 53ffa0b | 2015-07-22 21:46:32 +0530 | [diff] [blame] | 2677 | void sdhci_msm_dump_pwr_ctrl_regs(struct sdhci_host *host) |
| 2678 | { |
| 2679 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 2680 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 2681 | const struct sdhci_msm_offset *msm_host_offset = |
| 2682 | msm_host->offset; |
Siba Prasad | 0196fe4 | 2017-06-27 15:13:27 +0530 | [diff] [blame] | 2683 | unsigned int irq_flags = 0; |
| 2684 | struct irq_desc *pwr_irq_desc = irq_to_desc(msm_host->pwr_irq); |
Pavan Anamula | 53ffa0b | 2015-07-22 21:46:32 +0530 | [diff] [blame] | 2685 | |
Siba Prasad | 0196fe4 | 2017-06-27 15:13:27 +0530 | [diff] [blame] | 2686 | if (pwr_irq_desc) |
| 2687 | irq_flags = ACCESS_PRIVATE(pwr_irq_desc->irq_data.common, |
| 2688 | state_use_accessors); |
| 2689 | |
| 2690 | pr_err("%s: PWRCTL_STATUS: 0x%08x | PWRCTL_MASK: 0x%08x | PWRCTL_CTL: 0x%08x, pwr isr state=0x%x\n", |
Pavan Anamula | 53ffa0b | 2015-07-22 21:46:32 +0530 | [diff] [blame] | 2691 | mmc_hostname(host->mmc), |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 2692 | sdhci_msm_readl_relaxed(host, |
| 2693 | msm_host_offset->CORE_PWRCTL_STATUS), |
| 2694 | sdhci_msm_readl_relaxed(host, |
| 2695 | msm_host_offset->CORE_PWRCTL_MASK), |
| 2696 | sdhci_msm_readl_relaxed(host, |
Siba Prasad | 0196fe4 | 2017-06-27 15:13:27 +0530 | [diff] [blame] | 2697 | msm_host_offset->CORE_PWRCTL_CTL), irq_flags); |
| 2698 | |
| 2699 | MMC_TRACE(host->mmc, |
| 2700 | "%s: Sts: 0x%08x | Mask: 0x%08x | Ctrl: 0x%08x, pwr isr state=0x%x\n", |
| 2701 | __func__, |
| 2702 | sdhci_msm_readb_relaxed(host, |
| 2703 | msm_host_offset->CORE_PWRCTL_STATUS), |
| 2704 | sdhci_msm_readb_relaxed(host, |
| 2705 | msm_host_offset->CORE_PWRCTL_MASK), |
| 2706 | sdhci_msm_readb_relaxed(host, |
| 2707 | msm_host_offset->CORE_PWRCTL_CTL), irq_flags); |
Pavan Anamula | 53ffa0b | 2015-07-22 21:46:32 +0530 | [diff] [blame] | 2708 | } |
| 2709 | |
Bao D. Nguyen | cb045dd | 2018-02-14 15:41:45 -0800 | [diff] [blame] | 2710 | static int sdhci_msm_clear_pwrctl_status(struct sdhci_host *host, u8 value) |
| 2711 | { |
| 2712 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 2713 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 2714 | const struct sdhci_msm_offset *msm_host_offset = msm_host->offset; |
| 2715 | int ret = 0, retry = 10; |
| 2716 | |
| 2717 | /* |
| 2718 | * There is a rare HW scenario where the first clear pulse could be |
| 2719 | * lost when actual reset and clear/read of status register is |
| 2720 | * happening at a time. Hence, retry for at least 10 times to make |
| 2721 | * sure status register is cleared. Otherwise, this will result in |
| 2722 | * a spurious power IRQ resulting in system instability. |
| 2723 | */ |
| 2724 | do { |
| 2725 | if (retry == 0) { |
| 2726 | pr_err("%s: Timedout clearing (0x%x) pwrctl status register\n", |
| 2727 | mmc_hostname(host->mmc), value); |
| 2728 | sdhci_msm_dump_pwr_ctrl_regs(host); |
| 2729 | WARN_ON(1); |
| 2730 | ret = -EBUSY; |
| 2731 | break; |
| 2732 | } |
| 2733 | |
| 2734 | /* |
| 2735 | * Clear the PWRCTL_STATUS interrupt bits by writing to the |
| 2736 | * corresponding bits in the PWRCTL_CLEAR register. |
| 2737 | */ |
| 2738 | sdhci_msm_writeb_relaxed(value, host, |
| 2739 | msm_host_offset->CORE_PWRCTL_CLEAR); |
| 2740 | /* |
| 2741 | * SDHC has core_mem and hc_mem device memory and these memory |
| 2742 | * addresses do not fall within 1KB region. Hence, any update |
| 2743 | * to core_mem address space would require an mb() to ensure |
| 2744 | * this gets completed before its next update to registers |
| 2745 | * within hc_mem. |
| 2746 | */ |
| 2747 | mb(); |
| 2748 | retry--; |
| 2749 | udelay(10); |
| 2750 | } while (value & sdhci_msm_readb_relaxed(host, |
| 2751 | msm_host_offset->CORE_PWRCTL_STATUS)); |
| 2752 | |
| 2753 | return ret; |
| 2754 | } |
| 2755 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2756 | static irqreturn_t sdhci_msm_pwr_irq(int irq, void *data) |
| 2757 | { |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 2758 | struct sdhci_host *host = (struct sdhci_host *)data; |
| 2759 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 2760 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 2761 | const struct sdhci_msm_offset *msm_host_offset = |
| 2762 | msm_host->offset; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2763 | u8 irq_status = 0; |
| 2764 | u8 irq_ack = 0; |
| 2765 | int ret = 0; |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2766 | int pwr_state = 0, io_level = 0; |
| 2767 | unsigned long flags; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2768 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 2769 | irq_status = sdhci_msm_readb_relaxed(host, |
| 2770 | msm_host_offset->CORE_PWRCTL_STATUS); |
| 2771 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2772 | pr_debug("%s: Received IRQ(%d), status=0x%x\n", |
| 2773 | mmc_hostname(msm_host->mmc), irq, irq_status); |
| 2774 | |
Bao D. Nguyen | cb045dd | 2018-02-14 15:41:45 -0800 | [diff] [blame] | 2775 | sdhci_msm_clear_pwrctl_status(host, irq_status); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2776 | |
| 2777 | /* Handle BUS ON/OFF*/ |
| 2778 | if (irq_status & CORE_PWRCTL_BUS_ON) { |
| 2779 | ret = sdhci_msm_setup_vreg(msm_host->pdata, true, false); |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2780 | if (!ret) { |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2781 | ret = sdhci_msm_setup_pins(msm_host->pdata, true); |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2782 | ret |= sdhci_msm_set_vdd_io_vol(msm_host->pdata, |
| 2783 | VDD_IO_HIGH, 0); |
| 2784 | } |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2785 | if (ret) |
| 2786 | irq_ack |= CORE_PWRCTL_BUS_FAIL; |
| 2787 | else |
| 2788 | irq_ack |= CORE_PWRCTL_BUS_SUCCESS; |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2789 | |
| 2790 | pwr_state = REQ_BUS_ON; |
| 2791 | io_level = REQ_IO_HIGH; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2792 | } |
| 2793 | if (irq_status & CORE_PWRCTL_BUS_OFF) { |
Veerabhadrarao Badiganti | eed1dea | 2017-06-21 19:27:32 +0530 | [diff] [blame] | 2794 | if (msm_host->pltfm_init_done) |
| 2795 | ret = sdhci_msm_setup_vreg(msm_host->pdata, |
| 2796 | false, false); |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2797 | if (!ret) { |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2798 | ret = sdhci_msm_setup_pins(msm_host->pdata, false); |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2799 | ret |= sdhci_msm_set_vdd_io_vol(msm_host->pdata, |
| 2800 | VDD_IO_LOW, 0); |
| 2801 | } |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2802 | if (ret) |
| 2803 | irq_ack |= CORE_PWRCTL_BUS_FAIL; |
| 2804 | else |
| 2805 | irq_ack |= CORE_PWRCTL_BUS_SUCCESS; |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2806 | |
| 2807 | pwr_state = REQ_BUS_OFF; |
| 2808 | io_level = REQ_IO_LOW; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2809 | } |
| 2810 | /* Handle IO LOW/HIGH */ |
| 2811 | if (irq_status & CORE_PWRCTL_IO_LOW) { |
| 2812 | /* Switch voltage Low */ |
| 2813 | ret = sdhci_msm_set_vdd_io_vol(msm_host->pdata, VDD_IO_LOW, 0); |
| 2814 | if (ret) |
| 2815 | irq_ack |= CORE_PWRCTL_IO_FAIL; |
| 2816 | else |
| 2817 | irq_ack |= CORE_PWRCTL_IO_SUCCESS; |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2818 | |
| 2819 | io_level = REQ_IO_LOW; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2820 | } |
| 2821 | if (irq_status & CORE_PWRCTL_IO_HIGH) { |
| 2822 | /* Switch voltage High */ |
| 2823 | ret = sdhci_msm_set_vdd_io_vol(msm_host->pdata, VDD_IO_HIGH, 0); |
| 2824 | if (ret) |
| 2825 | irq_ack |= CORE_PWRCTL_IO_FAIL; |
| 2826 | else |
| 2827 | irq_ack |= CORE_PWRCTL_IO_SUCCESS; |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2828 | |
| 2829 | io_level = REQ_IO_HIGH; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2830 | } |
| 2831 | |
| 2832 | /* ACK status to the core */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 2833 | sdhci_msm_writeb_relaxed(irq_ack, host, |
| 2834 | msm_host_offset->CORE_PWRCTL_CTL); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2835 | /* |
| 2836 | * SDHC has core_mem and hc_mem device memory and these memory |
| 2837 | * addresses do not fall within 1KB region. Hence, any update to |
| 2838 | * core_mem address space would require an mb() to ensure this gets |
| 2839 | * completed before its next update to registers within hc_mem. |
| 2840 | */ |
| 2841 | mb(); |
Veerabhadrarao Badiganti | ac24b40 | 2017-03-07 06:30:13 +0530 | [diff] [blame] | 2842 | if ((io_level & REQ_IO_HIGH) && |
| 2843 | (msm_host->caps_0 & CORE_3_0V_SUPPORT) && |
| 2844 | !msm_host->core_3_0v_support) |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 2845 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 2846 | msm_host_offset->CORE_VENDOR_SPEC) & |
| 2847 | ~CORE_IO_PAD_PWR_SWITCH), host->ioaddr + |
| 2848 | msm_host_offset->CORE_VENDOR_SPEC); |
Krishna Konda | 46fd143 | 2014-10-30 21:13:27 -0700 | [diff] [blame] | 2849 | else if ((io_level & REQ_IO_LOW) || |
| 2850 | (msm_host->caps_0 & CORE_1_8V_SUPPORT)) |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 2851 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 2852 | msm_host_offset->CORE_VENDOR_SPEC) | |
| 2853 | CORE_IO_PAD_PWR_SWITCH), host->ioaddr + |
| 2854 | msm_host_offset->CORE_VENDOR_SPEC); |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 2855 | mb(); |
| 2856 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2857 | pr_debug("%s: Handled IRQ(%d), ret=%d, ack=0x%x\n", |
| 2858 | mmc_hostname(msm_host->mmc), irq, ret, irq_ack); |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2859 | spin_lock_irqsave(&host->lock, flags); |
| 2860 | if (pwr_state) |
| 2861 | msm_host->curr_pwr_state = pwr_state; |
| 2862 | if (io_level) |
| 2863 | msm_host->curr_io_level = io_level; |
| 2864 | complete(&msm_host->pwr_irq_completion); |
| 2865 | spin_unlock_irqrestore(&host->lock, flags); |
| 2866 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2867 | return IRQ_HANDLED; |
| 2868 | } |
| 2869 | |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 2870 | static ssize_t |
Sahitya Tummala | 5c55b93 | 2013-06-20 14:00:18 +0530 | [diff] [blame] | 2871 | show_polling(struct device *dev, struct device_attribute *attr, char *buf) |
| 2872 | { |
| 2873 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 2874 | int poll; |
| 2875 | unsigned long flags; |
| 2876 | |
| 2877 | spin_lock_irqsave(&host->lock, flags); |
| 2878 | poll = !!(host->mmc->caps & MMC_CAP_NEEDS_POLL); |
| 2879 | spin_unlock_irqrestore(&host->lock, flags); |
| 2880 | |
| 2881 | return snprintf(buf, PAGE_SIZE, "%d\n", poll); |
| 2882 | } |
| 2883 | |
| 2884 | static ssize_t |
| 2885 | store_polling(struct device *dev, struct device_attribute *attr, |
| 2886 | const char *buf, size_t count) |
| 2887 | { |
| 2888 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 2889 | int value; |
| 2890 | unsigned long flags; |
| 2891 | |
| 2892 | if (!kstrtou32(buf, 0, &value)) { |
| 2893 | spin_lock_irqsave(&host->lock, flags); |
| 2894 | if (value) { |
| 2895 | host->mmc->caps |= MMC_CAP_NEEDS_POLL; |
| 2896 | mmc_detect_change(host->mmc, 0); |
| 2897 | } else { |
| 2898 | host->mmc->caps &= ~MMC_CAP_NEEDS_POLL; |
| 2899 | } |
| 2900 | spin_unlock_irqrestore(&host->lock, flags); |
| 2901 | } |
| 2902 | return count; |
| 2903 | } |
| 2904 | |
| 2905 | static ssize_t |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 2906 | show_sdhci_max_bus_bw(struct device *dev, struct device_attribute *attr, |
| 2907 | char *buf) |
| 2908 | { |
| 2909 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 2910 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 2911 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 2912 | |
| 2913 | return snprintf(buf, PAGE_SIZE, "%u\n", |
| 2914 | msm_host->msm_bus_vote.is_max_bw_needed); |
| 2915 | } |
| 2916 | |
| 2917 | static ssize_t |
| 2918 | store_sdhci_max_bus_bw(struct device *dev, struct device_attribute *attr, |
| 2919 | const char *buf, size_t count) |
| 2920 | { |
| 2921 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 2922 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 2923 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 2924 | uint32_t value; |
| 2925 | unsigned long flags; |
| 2926 | |
| 2927 | if (!kstrtou32(buf, 0, &value)) { |
| 2928 | spin_lock_irqsave(&host->lock, flags); |
| 2929 | msm_host->msm_bus_vote.is_max_bw_needed = !!value; |
| 2930 | spin_unlock_irqrestore(&host->lock, flags); |
| 2931 | } |
| 2932 | return count; |
| 2933 | } |
| 2934 | |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2935 | static void sdhci_msm_check_power_status(struct sdhci_host *host, u32 req_type) |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2936 | { |
| 2937 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 2938 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 2939 | const struct sdhci_msm_offset *msm_host_offset = |
| 2940 | msm_host->offset; |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2941 | unsigned long flags; |
| 2942 | bool done = false; |
Veerabhadrarao Badiganti | 88fdead | 2017-03-27 22:46:20 +0530 | [diff] [blame] | 2943 | u32 io_sig_sts = SWITCHABLE_SIGNALLING_VOL; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2944 | |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2945 | spin_lock_irqsave(&host->lock, flags); |
| 2946 | pr_debug("%s: %s: request %d curr_pwr_state %x curr_io_level %x\n", |
| 2947 | mmc_hostname(host->mmc), __func__, req_type, |
| 2948 | msm_host->curr_pwr_state, msm_host->curr_io_level); |
Veerabhadrarao Badiganti | 88fdead | 2017-03-27 22:46:20 +0530 | [diff] [blame] | 2949 | if (!msm_host->mci_removed) |
| 2950 | io_sig_sts = sdhci_msm_readl_relaxed(host, |
| 2951 | msm_host_offset->CORE_GENERICS); |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 2952 | |
Sahitya Tummala | 481fbb0 | 2013-08-06 15:22:28 +0530 | [diff] [blame] | 2953 | /* |
| 2954 | * The IRQ for request type IO High/Low will be generated when - |
| 2955 | * 1. SWITCHABLE_SIGNALLING_VOL is enabled in HW. |
| 2956 | * 2. If 1 is true and when there is a state change in 1.8V enable |
| 2957 | * bit (bit 3) of SDHCI_HOST_CONTROL2 register. The reset state of |
| 2958 | * that bit is 0 which indicates 3.3V IO voltage. So, when MMC core |
| 2959 | * layer tries to set it to 3.3V before card detection happens, the |
| 2960 | * IRQ doesn't get triggered as there is no state change in this bit. |
| 2961 | * The driver already handles this case by changing the IO voltage |
| 2962 | * level to high as part of controller power up sequence. Hence, check |
| 2963 | * for host->pwr to handle a case where IO voltage high request is |
| 2964 | * issued even before controller power up. |
| 2965 | */ |
| 2966 | if (req_type & (REQ_IO_HIGH | REQ_IO_LOW)) { |
| 2967 | if (!(io_sig_sts & SWITCHABLE_SIGNALLING_VOL) || |
| 2968 | ((req_type & REQ_IO_HIGH) && !host->pwr)) { |
| 2969 | pr_debug("%s: do not wait for power IRQ that never comes\n", |
| 2970 | mmc_hostname(host->mmc)); |
| 2971 | spin_unlock_irqrestore(&host->lock, flags); |
| 2972 | return; |
| 2973 | } |
| 2974 | } |
| 2975 | |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2976 | if ((req_type & msm_host->curr_pwr_state) || |
| 2977 | (req_type & msm_host->curr_io_level)) |
| 2978 | done = true; |
| 2979 | spin_unlock_irqrestore(&host->lock, flags); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 2980 | |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2981 | /* |
| 2982 | * This is needed here to hanlde a case where IRQ gets |
| 2983 | * triggered even before this function is called so that |
| 2984 | * x->done counter of completion gets reset. Otherwise, |
| 2985 | * next call to wait_for_completion returns immediately |
| 2986 | * without actually waiting for the IRQ to be handled. |
| 2987 | */ |
| 2988 | if (done) |
| 2989 | init_completion(&msm_host->pwr_irq_completion); |
Ritesh Harjani | 8212477 | 2014-11-04 15:34:00 +0530 | [diff] [blame] | 2990 | else if (!wait_for_completion_timeout(&msm_host->pwr_irq_completion, |
Siba Prasad | 0196fe4 | 2017-06-27 15:13:27 +0530 | [diff] [blame] | 2991 | msecs_to_jiffies(MSM_PWR_IRQ_TIMEOUT_MS))) { |
Ritesh Harjani | 8212477 | 2014-11-04 15:34:00 +0530 | [diff] [blame] | 2992 | __WARN_printf("%s: request(%d) timed out waiting for pwr_irq\n", |
| 2993 | mmc_hostname(host->mmc), req_type); |
Siba Prasad | 0196fe4 | 2017-06-27 15:13:27 +0530 | [diff] [blame] | 2994 | MMC_TRACE(host->mmc, |
| 2995 | "%s: request(%d) timed out waiting for pwr_irq\n", |
| 2996 | __func__, req_type); |
| 2997 | sdhci_msm_dump_pwr_ctrl_regs(host); |
| 2998 | } |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 2999 | pr_debug("%s: %s: request %d done\n", mmc_hostname(host->mmc), |
| 3000 | __func__, req_type); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 3001 | } |
| 3002 | |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 3003 | static void sdhci_msm_toggle_cdr(struct sdhci_host *host, bool enable) |
| 3004 | { |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3005 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3006 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 3007 | const struct sdhci_msm_offset *msm_host_offset = |
| 3008 | msm_host->offset; |
| 3009 | u32 config = readl_relaxed(host->ioaddr + |
| 3010 | msm_host_offset->CORE_DLL_CONFIG); |
Ritesh Harjani | 8e36f66 | 2014-11-14 11:09:56 +0530 | [diff] [blame] | 3011 | |
| 3012 | if (enable) { |
| 3013 | config |= CORE_CDR_EN; |
| 3014 | config &= ~CORE_CDR_EXT_EN; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3015 | writel_relaxed(config, host->ioaddr + |
| 3016 | msm_host_offset->CORE_DLL_CONFIG); |
Ritesh Harjani | 8e36f66 | 2014-11-14 11:09:56 +0530 | [diff] [blame] | 3017 | } else { |
| 3018 | config &= ~CORE_CDR_EN; |
| 3019 | config |= CORE_CDR_EXT_EN; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3020 | writel_relaxed(config, host->ioaddr + |
| 3021 | msm_host_offset->CORE_DLL_CONFIG); |
Ritesh Harjani | 8e36f66 | 2014-11-14 11:09:56 +0530 | [diff] [blame] | 3022 | } |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 3023 | } |
| 3024 | |
Asutosh Das | 648f9d1 | 2013-01-10 21:11:04 +0530 | [diff] [blame] | 3025 | static unsigned int sdhci_msm_max_segs(void) |
| 3026 | { |
| 3027 | return SDHCI_MSM_MAX_SEGMENTS; |
| 3028 | } |
| 3029 | |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3030 | static unsigned int sdhci_msm_get_min_clock(struct sdhci_host *host) |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 3031 | { |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 3032 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3033 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 3034 | |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3035 | return msm_host->pdata->sup_clk_table[0]; |
| 3036 | } |
| 3037 | |
| 3038 | static unsigned int sdhci_msm_get_max_clock(struct sdhci_host *host) |
| 3039 | { |
| 3040 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3041 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 3042 | int max_clk_index = msm_host->pdata->sup_clk_cnt; |
| 3043 | |
| 3044 | return msm_host->pdata->sup_clk_table[max_clk_index - 1]; |
| 3045 | } |
| 3046 | |
| 3047 | static unsigned int sdhci_msm_get_sup_clk_rate(struct sdhci_host *host, |
| 3048 | u32 req_clk) |
| 3049 | { |
| 3050 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3051 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 3052 | unsigned int sel_clk = -1; |
| 3053 | unsigned char cnt; |
| 3054 | |
| 3055 | if (req_clk < sdhci_msm_get_min_clock(host)) { |
| 3056 | sel_clk = sdhci_msm_get_min_clock(host); |
| 3057 | return sel_clk; |
| 3058 | } |
| 3059 | |
| 3060 | for (cnt = 0; cnt < msm_host->pdata->sup_clk_cnt; cnt++) { |
| 3061 | if (msm_host->pdata->sup_clk_table[cnt] > req_clk) { |
| 3062 | break; |
| 3063 | } else if (msm_host->pdata->sup_clk_table[cnt] == req_clk) { |
| 3064 | sel_clk = msm_host->pdata->sup_clk_table[cnt]; |
| 3065 | break; |
| 3066 | } else { |
| 3067 | sel_clk = msm_host->pdata->sup_clk_table[cnt]; |
| 3068 | } |
| 3069 | } |
| 3070 | return sel_clk; |
| 3071 | } |
| 3072 | |
Vijay Viswanath | c9e2c0f | 2017-11-09 15:43:25 +0530 | [diff] [blame] | 3073 | static long sdhci_msm_get_bus_aggr_clk_rate(struct sdhci_host *host, |
| 3074 | u32 apps_clk) |
| 3075 | { |
| 3076 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3077 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 3078 | long sel_clk = -1; |
| 3079 | unsigned char cnt; |
| 3080 | |
| 3081 | if (msm_host->pdata->bus_clk_cnt != msm_host->pdata->sup_clk_cnt) { |
| 3082 | pr_err("%s: %s: mismatch between bus_clk_cnt(%u) and apps_clk_cnt(%u)\n", |
| 3083 | mmc_hostname(host->mmc), __func__, |
| 3084 | (unsigned int)msm_host->pdata->bus_clk_cnt, |
| 3085 | (unsigned int)msm_host->pdata->sup_clk_cnt); |
| 3086 | return msm_host->pdata->bus_clk_table[0]; |
| 3087 | } |
| 3088 | if (apps_clk == sdhci_msm_get_min_clock(host)) { |
| 3089 | sel_clk = msm_host->pdata->bus_clk_table[0]; |
| 3090 | return sel_clk; |
| 3091 | } |
| 3092 | |
| 3093 | for (cnt = 0; cnt < msm_host->pdata->bus_clk_cnt; cnt++) { |
| 3094 | if (msm_host->pdata->sup_clk_table[cnt] > apps_clk) |
| 3095 | break; |
| 3096 | sel_clk = msm_host->pdata->bus_clk_table[cnt]; |
| 3097 | } |
| 3098 | return sel_clk; |
| 3099 | } |
| 3100 | |
Bao D. Nguyen | 6fa49fe | 2017-06-29 20:38:49 -0700 | [diff] [blame] | 3101 | static void sdhci_msm_registers_save(struct sdhci_host *host) |
| 3102 | { |
| 3103 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3104 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 3105 | const struct sdhci_msm_offset *msm_host_offset = |
| 3106 | msm_host->offset; |
| 3107 | |
| 3108 | if (!msm_host->regs_restore.is_supported) |
| 3109 | return; |
| 3110 | |
| 3111 | msm_host->regs_restore.vendor_func = readl_relaxed(host->ioaddr + |
| 3112 | msm_host_offset->CORE_VENDOR_SPEC); |
| 3113 | msm_host->regs_restore.vendor_pwrctl_mask = |
| 3114 | readl_relaxed(host->ioaddr + |
| 3115 | msm_host_offset->CORE_PWRCTL_MASK); |
| 3116 | msm_host->regs_restore.vendor_func2 = |
| 3117 | readl_relaxed(host->ioaddr + |
| 3118 | msm_host_offset->CORE_VENDOR_SPEC_FUNC2); |
| 3119 | msm_host->regs_restore.vendor_func3 = |
| 3120 | readl_relaxed(host->ioaddr + |
| 3121 | msm_host_offset->CORE_VENDOR_SPEC3); |
| 3122 | msm_host->regs_restore.hc_2c_2e = |
| 3123 | sdhci_readl(host, SDHCI_CLOCK_CONTROL); |
| 3124 | msm_host->regs_restore.hc_3c_3e = |
| 3125 | sdhci_readl(host, SDHCI_AUTO_CMD_ERR); |
| 3126 | msm_host->regs_restore.vendor_pwrctl_ctl = |
| 3127 | readl_relaxed(host->ioaddr + |
| 3128 | msm_host_offset->CORE_PWRCTL_CTL); |
| 3129 | msm_host->regs_restore.hc_38_3a = |
| 3130 | sdhci_readl(host, SDHCI_SIGNAL_ENABLE); |
| 3131 | msm_host->regs_restore.hc_34_36 = |
| 3132 | sdhci_readl(host, SDHCI_INT_ENABLE); |
| 3133 | msm_host->regs_restore.hc_28_2a = |
| 3134 | sdhci_readl(host, SDHCI_HOST_CONTROL); |
| 3135 | msm_host->regs_restore.vendor_caps_0 = |
| 3136 | readl_relaxed(host->ioaddr + |
| 3137 | msm_host_offset->CORE_VENDOR_SPEC_CAPABILITIES0); |
| 3138 | msm_host->regs_restore.hc_caps_1 = |
| 3139 | sdhci_readl(host, SDHCI_CAPABILITIES_1); |
| 3140 | msm_host->regs_restore.testbus_config = readl_relaxed(host->ioaddr + |
| 3141 | msm_host_offset->CORE_TESTBUS_CONFIG); |
| 3142 | msm_host->regs_restore.is_valid = true; |
| 3143 | |
| 3144 | pr_debug("%s: %s: registers saved. PWRCTL_MASK = 0x%x\n", |
| 3145 | mmc_hostname(host->mmc), __func__, |
| 3146 | readl_relaxed(host->ioaddr + |
| 3147 | msm_host_offset->CORE_PWRCTL_MASK)); |
| 3148 | } |
| 3149 | |
| 3150 | static void sdhci_msm_registers_restore(struct sdhci_host *host) |
| 3151 | { |
| 3152 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3153 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Bao D. Nguyen | cb045dd | 2018-02-14 15:41:45 -0800 | [diff] [blame] | 3154 | u8 irq_status; |
Bao D. Nguyen | 6fa49fe | 2017-06-29 20:38:49 -0700 | [diff] [blame] | 3155 | const struct sdhci_msm_offset *msm_host_offset = |
| 3156 | msm_host->offset; |
| 3157 | |
| 3158 | if (!msm_host->regs_restore.is_supported || |
| 3159 | !msm_host->regs_restore.is_valid) |
| 3160 | return; |
| 3161 | |
Bao D. Nguyen | cb045dd | 2018-02-14 15:41:45 -0800 | [diff] [blame] | 3162 | writel_relaxed(0, host->ioaddr + msm_host_offset->CORE_PWRCTL_MASK); |
Bao D. Nguyen | 6fa49fe | 2017-06-29 20:38:49 -0700 | [diff] [blame] | 3163 | writel_relaxed(msm_host->regs_restore.vendor_func, host->ioaddr + |
| 3164 | msm_host_offset->CORE_VENDOR_SPEC); |
Bao D. Nguyen | 6fa49fe | 2017-06-29 20:38:49 -0700 | [diff] [blame] | 3165 | writel_relaxed(msm_host->regs_restore.vendor_func2, |
| 3166 | host->ioaddr + |
| 3167 | msm_host_offset->CORE_VENDOR_SPEC_FUNC2); |
| 3168 | writel_relaxed(msm_host->regs_restore.vendor_func3, |
| 3169 | host->ioaddr + |
| 3170 | msm_host_offset->CORE_VENDOR_SPEC3); |
| 3171 | sdhci_writel(host, msm_host->regs_restore.hc_2c_2e, |
| 3172 | SDHCI_CLOCK_CONTROL); |
| 3173 | sdhci_writel(host, msm_host->regs_restore.hc_3c_3e, |
| 3174 | SDHCI_AUTO_CMD_ERR); |
Bao D. Nguyen | 6fa49fe | 2017-06-29 20:38:49 -0700 | [diff] [blame] | 3175 | sdhci_writel(host, msm_host->regs_restore.hc_38_3a, |
| 3176 | SDHCI_SIGNAL_ENABLE); |
| 3177 | sdhci_writel(host, msm_host->regs_restore.hc_34_36, |
| 3178 | SDHCI_INT_ENABLE); |
| 3179 | sdhci_writel(host, msm_host->regs_restore.hc_28_2a, |
| 3180 | SDHCI_HOST_CONTROL); |
| 3181 | writel_relaxed(msm_host->regs_restore.vendor_caps_0, |
| 3182 | host->ioaddr + |
| 3183 | msm_host_offset->CORE_VENDOR_SPEC_CAPABILITIES0); |
| 3184 | sdhci_writel(host, msm_host->regs_restore.hc_caps_1, |
| 3185 | SDHCI_CAPABILITIES_1); |
| 3186 | writel_relaxed(msm_host->regs_restore.testbus_config, host->ioaddr + |
| 3187 | msm_host_offset->CORE_TESTBUS_CONFIG); |
| 3188 | msm_host->regs_restore.is_valid = false; |
| 3189 | |
Bao D. Nguyen | cb045dd | 2018-02-14 15:41:45 -0800 | [diff] [blame] | 3190 | /* |
| 3191 | * Clear the PWRCTL_STATUS register. |
| 3192 | * There is a rare HW scenario where the first clear pulse could be |
| 3193 | * lost when actual reset and clear/read of status register is |
| 3194 | * happening at a time. Hence, retry for at least 10 times to make |
| 3195 | * sure status register is cleared. Otherwise, this will result in |
| 3196 | * a spurious power IRQ resulting in system instability. |
| 3197 | */ |
| 3198 | irq_status = sdhci_msm_readb_relaxed(host, |
| 3199 | msm_host_offset->CORE_PWRCTL_STATUS); |
| 3200 | |
| 3201 | sdhci_msm_clear_pwrctl_status(host, irq_status); |
| 3202 | |
| 3203 | writel_relaxed(msm_host->regs_restore.vendor_pwrctl_ctl, |
| 3204 | host->ioaddr + msm_host_offset->CORE_PWRCTL_CTL); |
| 3205 | writel_relaxed(msm_host->regs_restore.vendor_pwrctl_mask, |
| 3206 | host->ioaddr + msm_host_offset->CORE_PWRCTL_MASK); |
| 3207 | |
Bao D. Nguyen | 6fa49fe | 2017-06-29 20:38:49 -0700 | [diff] [blame] | 3208 | pr_debug("%s: %s: registers restored. PWRCTL_MASK = 0x%x\n", |
| 3209 | mmc_hostname(host->mmc), __func__, |
| 3210 | readl_relaxed(host->ioaddr + |
| 3211 | msm_host_offset->CORE_PWRCTL_MASK)); |
| 3212 | } |
| 3213 | |
Asutosh Das | 9d7ee2f | 2013-11-08 12:33:47 +0530 | [diff] [blame] | 3214 | static int sdhci_msm_enable_controller_clock(struct sdhci_host *host) |
| 3215 | { |
| 3216 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3217 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 3218 | int rc = 0; |
| 3219 | |
| 3220 | if (atomic_read(&msm_host->controller_clock)) |
| 3221 | return 0; |
| 3222 | |
| 3223 | sdhci_msm_bus_voting(host, 1); |
| 3224 | |
| 3225 | if (!IS_ERR(msm_host->pclk)) { |
| 3226 | rc = clk_prepare_enable(msm_host->pclk); |
| 3227 | if (rc) { |
| 3228 | pr_err("%s: %s: failed to enable the pclk with error %d\n", |
| 3229 | mmc_hostname(host->mmc), __func__, rc); |
| 3230 | goto remove_vote; |
| 3231 | } |
| 3232 | } |
| 3233 | |
Vijay Viswanath | 674aeda | 2017-10-07 14:28:15 +0530 | [diff] [blame] | 3234 | if (!IS_ERR(msm_host->bus_aggr_clk)) { |
| 3235 | rc = clk_prepare_enable(msm_host->bus_aggr_clk); |
| 3236 | if (rc) { |
| 3237 | pr_err("%s: %s: failed to enable the bus aggr clk with error %d\n", |
| 3238 | mmc_hostname(host->mmc), __func__, rc); |
| 3239 | goto disable_pclk; |
| 3240 | } |
| 3241 | } |
| 3242 | |
Asutosh Das | 9d7ee2f | 2013-11-08 12:33:47 +0530 | [diff] [blame] | 3243 | rc = clk_prepare_enable(msm_host->clk); |
| 3244 | if (rc) { |
| 3245 | pr_err("%s: %s: failed to enable the host-clk with error %d\n", |
| 3246 | mmc_hostname(host->mmc), __func__, rc); |
Vijay Viswanath | 674aeda | 2017-10-07 14:28:15 +0530 | [diff] [blame] | 3247 | goto disable_bus_aggr_clk; |
Asutosh Das | 9d7ee2f | 2013-11-08 12:33:47 +0530 | [diff] [blame] | 3248 | } |
| 3249 | |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 3250 | if (!IS_ERR(msm_host->ice_clk)) { |
| 3251 | rc = clk_prepare_enable(msm_host->ice_clk); |
| 3252 | if (rc) { |
| 3253 | pr_err("%s: %s: failed to enable the ice-clk with error %d\n", |
| 3254 | mmc_hostname(host->mmc), __func__, rc); |
| 3255 | goto disable_host_clk; |
| 3256 | } |
| 3257 | } |
Asutosh Das | 9d7ee2f | 2013-11-08 12:33:47 +0530 | [diff] [blame] | 3258 | atomic_set(&msm_host->controller_clock, 1); |
| 3259 | pr_debug("%s: %s: enabled controller clock\n", |
| 3260 | mmc_hostname(host->mmc), __func__); |
Bao D. Nguyen | 6fa49fe | 2017-06-29 20:38:49 -0700 | [diff] [blame] | 3261 | sdhci_msm_registers_restore(host); |
Asutosh Das | 9d7ee2f | 2013-11-08 12:33:47 +0530 | [diff] [blame] | 3262 | goto out; |
| 3263 | |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 3264 | disable_host_clk: |
| 3265 | if (!IS_ERR(msm_host->clk)) |
| 3266 | clk_disable_unprepare(msm_host->clk); |
Vijay Viswanath | 674aeda | 2017-10-07 14:28:15 +0530 | [diff] [blame] | 3267 | disable_bus_aggr_clk: |
| 3268 | if (!IS_ERR(msm_host->bus_aggr_clk)) |
| 3269 | clk_disable_unprepare(msm_host->bus_aggr_clk); |
Asutosh Das | 9d7ee2f | 2013-11-08 12:33:47 +0530 | [diff] [blame] | 3270 | disable_pclk: |
| 3271 | if (!IS_ERR(msm_host->pclk)) |
| 3272 | clk_disable_unprepare(msm_host->pclk); |
| 3273 | remove_vote: |
| 3274 | if (msm_host->msm_bus_vote.client_handle) |
| 3275 | sdhci_msm_bus_cancel_work_and_set_vote(host, 0); |
| 3276 | out: |
| 3277 | return rc; |
| 3278 | } |
| 3279 | |
Sayali Lokhande | b3029516 | 2016-11-18 16:05:50 +0530 | [diff] [blame] | 3280 | static void sdhci_msm_disable_controller_clock(struct sdhci_host *host) |
| 3281 | { |
| 3282 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3283 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Asutosh Das | 9d7ee2f | 2013-11-08 12:33:47 +0530 | [diff] [blame] | 3284 | |
Sayali Lokhande | b3029516 | 2016-11-18 16:05:50 +0530 | [diff] [blame] | 3285 | if (atomic_read(&msm_host->controller_clock)) { |
Bao D. Nguyen | 6fa49fe | 2017-06-29 20:38:49 -0700 | [diff] [blame] | 3286 | sdhci_msm_registers_save(host); |
Sayali Lokhande | b3029516 | 2016-11-18 16:05:50 +0530 | [diff] [blame] | 3287 | if (!IS_ERR(msm_host->clk)) |
| 3288 | clk_disable_unprepare(msm_host->clk); |
Sayali Lokhande | b3029516 | 2016-11-18 16:05:50 +0530 | [diff] [blame] | 3289 | if (!IS_ERR(msm_host->ice_clk)) |
| 3290 | clk_disable_unprepare(msm_host->ice_clk); |
Vijay Viswanath | 674aeda | 2017-10-07 14:28:15 +0530 | [diff] [blame] | 3291 | if (!IS_ERR(msm_host->bus_aggr_clk)) |
| 3292 | clk_disable_unprepare(msm_host->bus_aggr_clk); |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 3293 | if (!IS_ERR(msm_host->pclk)) |
| 3294 | clk_disable_unprepare(msm_host->pclk); |
Sayali Lokhande | b3029516 | 2016-11-18 16:05:50 +0530 | [diff] [blame] | 3295 | sdhci_msm_bus_voting(host, 0); |
| 3296 | atomic_set(&msm_host->controller_clock, 0); |
| 3297 | pr_debug("%s: %s: disabled controller clock\n", |
| 3298 | mmc_hostname(host->mmc), __func__); |
| 3299 | } |
| 3300 | } |
Asutosh Das | 9d7ee2f | 2013-11-08 12:33:47 +0530 | [diff] [blame] | 3301 | |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3302 | static int sdhci_msm_prepare_clocks(struct sdhci_host *host, bool enable) |
| 3303 | { |
| 3304 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3305 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 3306 | int rc = 0; |
| 3307 | |
| 3308 | if (enable && !atomic_read(&msm_host->clks_on)) { |
| 3309 | pr_debug("%s: request to enable clocks\n", |
| 3310 | mmc_hostname(host->mmc)); |
Sahitya Tummala | 79edc6a | 2013-05-23 15:59:22 +0530 | [diff] [blame] | 3311 | |
Asutosh Das | 9d7ee2f | 2013-11-08 12:33:47 +0530 | [diff] [blame] | 3312 | /* |
| 3313 | * The bus-width or the clock rate might have changed |
| 3314 | * after controller clocks are enbaled, update bus vote |
| 3315 | * in such case. |
| 3316 | */ |
| 3317 | if (atomic_read(&msm_host->controller_clock)) |
| 3318 | sdhci_msm_bus_voting(host, 1); |
| 3319 | |
| 3320 | rc = sdhci_msm_enable_controller_clock(host); |
| 3321 | if (rc) |
| 3322 | goto remove_vote; |
Sahitya Tummala | 79edc6a | 2013-05-23 15:59:22 +0530 | [diff] [blame] | 3323 | |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 3324 | if (!IS_ERR_OR_NULL(msm_host->bus_clk)) { |
| 3325 | rc = clk_prepare_enable(msm_host->bus_clk); |
| 3326 | if (rc) { |
| 3327 | pr_err("%s: %s: failed to enable the bus-clock with error %d\n", |
| 3328 | mmc_hostname(host->mmc), __func__, rc); |
Asutosh Das | 9d7ee2f | 2013-11-08 12:33:47 +0530 | [diff] [blame] | 3329 | goto disable_controller_clk; |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 3330 | } |
| 3331 | } |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3332 | if (!IS_ERR(msm_host->ff_clk)) { |
| 3333 | rc = clk_prepare_enable(msm_host->ff_clk); |
| 3334 | if (rc) { |
| 3335 | pr_err("%s: %s: failed to enable the ff_clk with error %d\n", |
| 3336 | mmc_hostname(host->mmc), __func__, rc); |
Asutosh Das | 9d7ee2f | 2013-11-08 12:33:47 +0530 | [diff] [blame] | 3337 | goto disable_bus_clk; |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3338 | } |
| 3339 | } |
| 3340 | if (!IS_ERR(msm_host->sleep_clk)) { |
| 3341 | rc = clk_prepare_enable(msm_host->sleep_clk); |
| 3342 | if (rc) { |
| 3343 | pr_err("%s: %s: failed to enable the sleep_clk with error %d\n", |
| 3344 | mmc_hostname(host->mmc), __func__, rc); |
| 3345 | goto disable_ff_clk; |
| 3346 | } |
| 3347 | } |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 3348 | mb(); |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 3349 | |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3350 | } else if (!enable && atomic_read(&msm_host->clks_on)) { |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 3351 | sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL); |
| 3352 | mb(); |
Sahitya Tummala | dc18298 | 2013-08-20 15:32:09 +0530 | [diff] [blame] | 3353 | /* |
| 3354 | * During 1.8V signal switching the clock source must |
| 3355 | * still be ON as it requires accessing SDHC |
| 3356 | * registers (SDHCi host control2 register bit 3 must |
| 3357 | * be written and polled after stopping the SDCLK). |
| 3358 | */ |
| 3359 | if (host->mmc->card_clock_off) |
| 3360 | return 0; |
| 3361 | pr_debug("%s: request to disable clocks\n", |
| 3362 | mmc_hostname(host->mmc)); |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3363 | if (!IS_ERR_OR_NULL(msm_host->sleep_clk)) |
| 3364 | clk_disable_unprepare(msm_host->sleep_clk); |
| 3365 | if (!IS_ERR_OR_NULL(msm_host->ff_clk)) |
| 3366 | clk_disable_unprepare(msm_host->ff_clk); |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 3367 | if (!IS_ERR_OR_NULL(msm_host->bus_clk)) |
| 3368 | clk_disable_unprepare(msm_host->bus_clk); |
Bao D. Nguyen | 6fa49fe | 2017-06-29 20:38:49 -0700 | [diff] [blame] | 3369 | sdhci_msm_disable_controller_clock(host); |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 3370 | } |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3371 | atomic_set(&msm_host->clks_on, enable); |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 3372 | goto out; |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3373 | disable_ff_clk: |
| 3374 | if (!IS_ERR_OR_NULL(msm_host->ff_clk)) |
| 3375 | clk_disable_unprepare(msm_host->ff_clk); |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 3376 | disable_bus_clk: |
| 3377 | if (!IS_ERR_OR_NULL(msm_host->bus_clk)) |
| 3378 | clk_disable_unprepare(msm_host->bus_clk); |
Asutosh Das | 9d7ee2f | 2013-11-08 12:33:47 +0530 | [diff] [blame] | 3379 | disable_controller_clk: |
| 3380 | if (!IS_ERR_OR_NULL(msm_host->clk)) |
| 3381 | clk_disable_unprepare(msm_host->clk); |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 3382 | if (!IS_ERR(msm_host->ice_clk)) |
| 3383 | clk_disable_unprepare(msm_host->ice_clk); |
Vijay Viswanath | 674aeda | 2017-10-07 14:28:15 +0530 | [diff] [blame] | 3384 | if (!IS_ERR_OR_NULL(msm_host->bus_aggr_clk)) |
| 3385 | clk_disable_unprepare(msm_host->bus_aggr_clk); |
Asutosh Das | 9d7ee2f | 2013-11-08 12:33:47 +0530 | [diff] [blame] | 3386 | if (!IS_ERR_OR_NULL(msm_host->pclk)) |
| 3387 | clk_disable_unprepare(msm_host->pclk); |
| 3388 | atomic_set(&msm_host->controller_clock, 0); |
Sahitya Tummala | 79edc6a | 2013-05-23 15:59:22 +0530 | [diff] [blame] | 3389 | remove_vote: |
| 3390 | if (msm_host->msm_bus_vote.client_handle) |
| 3391 | sdhci_msm_bus_cancel_work_and_set_vote(host, 0); |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 3392 | out: |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3393 | return rc; |
| 3394 | } |
| 3395 | |
| 3396 | static void sdhci_msm_set_clock(struct sdhci_host *host, unsigned int clock) |
| 3397 | { |
| 3398 | int rc; |
| 3399 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3400 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3401 | const struct sdhci_msm_offset *msm_host_offset = |
| 3402 | msm_host->offset; |
Subhash Jadavani | c1e9755 | 2016-06-17 18:44:14 -0700 | [diff] [blame] | 3403 | struct mmc_card *card = host->mmc->card; |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3404 | struct mmc_ios curr_ios = host->mmc->ios; |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 3405 | u32 sup_clock, ddr_clock, dll_lock; |
Vijay Viswanath | c9e2c0f | 2017-11-09 15:43:25 +0530 | [diff] [blame] | 3406 | long bus_clk_rate; |
Sahitya Tummala | 043744a | 2013-06-24 09:55:33 +0530 | [diff] [blame] | 3407 | bool curr_pwrsave; |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3408 | |
| 3409 | if (!clock) { |
Sujit Reddy Thumma | bf1aecc | 2014-01-10 10:58:54 +0530 | [diff] [blame] | 3410 | /* |
| 3411 | * disable pwrsave to ensure clock is not auto-gated until |
| 3412 | * the rate is >400KHz (initialization complete). |
| 3413 | */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3414 | writel_relaxed(readl_relaxed(host->ioaddr + |
| 3415 | msm_host_offset->CORE_VENDOR_SPEC) & |
| 3416 | ~CORE_CLK_PWRSAVE, host->ioaddr + |
| 3417 | msm_host_offset->CORE_VENDOR_SPEC); |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3418 | sdhci_msm_prepare_clocks(host, false); |
| 3419 | host->clock = clock; |
| 3420 | goto out; |
| 3421 | } |
| 3422 | |
| 3423 | rc = sdhci_msm_prepare_clocks(host, true); |
| 3424 | if (rc) |
| 3425 | goto out; |
| 3426 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3427 | curr_pwrsave = !!(readl_relaxed(host->ioaddr + |
| 3428 | msm_host_offset->CORE_VENDOR_SPEC) & CORE_CLK_PWRSAVE); |
Sahitya Tummala | e000b24 | 2013-08-29 16:21:08 +0530 | [diff] [blame] | 3429 | if ((clock > 400000) && |
Subhash Jadavani | c1e9755 | 2016-06-17 18:44:14 -0700 | [diff] [blame] | 3430 | !curr_pwrsave && card && mmc_host_may_gate_card(card)) |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3431 | writel_relaxed(readl_relaxed(host->ioaddr + |
| 3432 | msm_host_offset->CORE_VENDOR_SPEC) |
| 3433 | | CORE_CLK_PWRSAVE, host->ioaddr + |
| 3434 | msm_host_offset->CORE_VENDOR_SPEC); |
Sahitya Tummala | 043744a | 2013-06-24 09:55:33 +0530 | [diff] [blame] | 3435 | /* |
| 3436 | * Disable pwrsave for a newly added card if doesn't allow clock |
| 3437 | * gating. |
| 3438 | */ |
Subhash Jadavani | c1e9755 | 2016-06-17 18:44:14 -0700 | [diff] [blame] | 3439 | else if (curr_pwrsave && card && !mmc_host_may_gate_card(card)) |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3440 | writel_relaxed(readl_relaxed(host->ioaddr + |
| 3441 | msm_host_offset->CORE_VENDOR_SPEC) |
| 3442 | & ~CORE_CLK_PWRSAVE, host->ioaddr + |
| 3443 | msm_host_offset->CORE_VENDOR_SPEC); |
Sahitya Tummala | 043744a | 2013-06-24 09:55:33 +0530 | [diff] [blame] | 3444 | |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3445 | sup_clock = sdhci_msm_get_sup_clk_rate(host, clock); |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3446 | if ((curr_ios.timing == MMC_TIMING_UHS_DDR50) || |
Venkat Gopalakrishnan | 0a29da9 | 2015-01-09 12:19:16 -0800 | [diff] [blame] | 3447 | (curr_ios.timing == MMC_TIMING_MMC_DDR52) || |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3448 | (curr_ios.timing == MMC_TIMING_MMC_HS400)) { |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3449 | /* |
| 3450 | * The SDHC requires internal clock frequency to be double the |
| 3451 | * actual clock that will be set for DDR mode. The controller |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3452 | * uses the faster clock(100/400MHz) for some of its parts and |
| 3453 | * send the actual required clock (50/200MHz) to the card. |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3454 | */ |
| 3455 | ddr_clock = clock * 2; |
| 3456 | sup_clock = sdhci_msm_get_sup_clk_rate(host, |
| 3457 | ddr_clock); |
| 3458 | } |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3459 | |
| 3460 | /* |
| 3461 | * In general all timing modes are controlled via UHS mode select in |
| 3462 | * Host Control2 register. eMMC specific HS200/HS400 doesn't have |
| 3463 | * their respective modes defined here, hence we use these values. |
| 3464 | * |
| 3465 | * HS200 - SDR104 (Since they both are equivalent in functionality) |
| 3466 | * HS400 - This involves multiple configurations |
| 3467 | * Initially SDR104 - when tuning is required as HS200 |
| 3468 | * Then when switching to DDR @ 400MHz (HS400) we use |
| 3469 | * the vendor specific HC_SELECT_IN to control the mode. |
| 3470 | * |
| 3471 | * In addition to controlling the modes we also need to select the |
| 3472 | * correct input clock for DLL depending on the mode. |
| 3473 | * |
| 3474 | * HS400 - divided clock (free running MCLK/2) |
| 3475 | * All other modes - default (free running MCLK) |
| 3476 | */ |
| 3477 | if (curr_ios.timing == MMC_TIMING_MMC_HS400) { |
| 3478 | /* Select the divided clock (free running MCLK/2) */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3479 | writel_relaxed(((readl_relaxed(host->ioaddr + |
| 3480 | msm_host_offset->CORE_VENDOR_SPEC) |
| 3481 | & ~CORE_HC_MCLK_SEL_MASK) |
| 3482 | | CORE_HC_MCLK_SEL_HS400), host->ioaddr + |
| 3483 | msm_host_offset->CORE_VENDOR_SPEC); |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3484 | /* |
| 3485 | * Select HS400 mode using the HC_SELECT_IN from VENDOR SPEC |
| 3486 | * register |
| 3487 | */ |
Ritesh Harjani | 70e2a71 | 2015-08-25 11:34:16 +0530 | [diff] [blame] | 3488 | if ((msm_host->tuning_done || |
Subhash Jadavani | c1e9755 | 2016-06-17 18:44:14 -0700 | [diff] [blame] | 3489 | (card && mmc_card_strobe(card) && |
Ritesh Harjani | 70e2a71 | 2015-08-25 11:34:16 +0530 | [diff] [blame] | 3490 | msm_host->enhanced_strobe)) && |
| 3491 | !msm_host->calibration_done) { |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3492 | /* |
| 3493 | * Write 0x6 to HC_SELECT_IN and 1 to HC_SELECT_IN_EN |
| 3494 | * field in VENDOR_SPEC_FUNC |
| 3495 | */ |
| 3496 | writel_relaxed((readl_relaxed(host->ioaddr + \ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3497 | msm_host_offset->CORE_VENDOR_SPEC) |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3498 | | CORE_HC_SELECT_IN_HS400 |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3499 | | CORE_HC_SELECT_IN_EN), host->ioaddr + |
| 3500 | msm_host_offset->CORE_VENDOR_SPEC); |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3501 | } |
Ram Prakash Gupta | 20b8ca1 | 2018-04-16 11:17:22 +0530 | [diff] [blame] | 3502 | /* |
| 3503 | * After MCLK ugating, toggle the FIFO write clock to get |
| 3504 | * the FIFO pointers and flags to valid state. |
| 3505 | */ |
| 3506 | if (msm_host->tuning_done || |
| 3507 | (card && mmc_card_strobe(card) && |
| 3508 | msm_host->enhanced_strobe)) { |
| 3509 | /* |
| 3510 | * set HC_REG_DLL_CONFIG_3[1] to select MCLK as |
| 3511 | * DLL input clock |
| 3512 | */ |
| 3513 | writel_relaxed(((readl_relaxed(host->ioaddr + |
| 3514 | msm_host_offset->CORE_DDR_CONFIG)) |
| 3515 | | RCLK_TOGGLE), host->ioaddr + |
| 3516 | msm_host_offset->CORE_DDR_CONFIG); |
| 3517 | /* ensure above write as toggling same bit quickly */ |
| 3518 | wmb(); |
| 3519 | udelay(2); |
| 3520 | /* |
| 3521 | * clear HC_REG_DLL_CONFIG_3[1] to select RCLK as |
| 3522 | * DLL input clock |
| 3523 | */ |
| 3524 | writel_relaxed(((readl_relaxed(host->ioaddr + |
| 3525 | msm_host_offset->CORE_DDR_CONFIG)) |
| 3526 | & ~RCLK_TOGGLE), host->ioaddr + |
| 3527 | msm_host_offset->CORE_DDR_CONFIG); |
| 3528 | } |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 3529 | if (!host->mmc->ios.old_rate && !msm_host->use_cdclp533) { |
| 3530 | /* |
| 3531 | * Poll on DLL_LOCK and DDR_DLL_LOCK bits in |
| 3532 | * CORE_DLL_STATUS to be set. This should get set |
| 3533 | * with in 15 us at 200 MHz. |
| 3534 | */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3535 | rc = readl_poll_timeout(host->ioaddr + |
| 3536 | msm_host_offset->CORE_DLL_STATUS, |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 3537 | dll_lock, (dll_lock & (CORE_DLL_LOCK | |
| 3538 | CORE_DDR_DLL_LOCK)), 10, 1000); |
| 3539 | if (rc == -ETIMEDOUT) |
| 3540 | pr_err("%s: Unable to get DLL_LOCK/DDR_DLL_LOCK, dll_status: 0x%08x\n", |
| 3541 | mmc_hostname(host->mmc), |
| 3542 | dll_lock); |
| 3543 | } |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3544 | } else { |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 3545 | if (!msm_host->use_cdclp533) |
| 3546 | /* set CORE_PWRSAVE_DLL bit in CORE_VENDOR_SPEC3 */ |
| 3547 | writel_relaxed((readl_relaxed(host->ioaddr + |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3548 | msm_host_offset->CORE_VENDOR_SPEC3) |
| 3549 | & ~CORE_PWRSAVE_DLL), host->ioaddr + |
| 3550 | msm_host_offset->CORE_VENDOR_SPEC3); |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 3551 | |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3552 | /* Select the default clock (free running MCLK) */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3553 | writel_relaxed(((readl_relaxed(host->ioaddr + |
| 3554 | msm_host_offset->CORE_VENDOR_SPEC) |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3555 | & ~CORE_HC_MCLK_SEL_MASK) |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3556 | | CORE_HC_MCLK_SEL_DFLT), host->ioaddr + |
| 3557 | msm_host_offset->CORE_VENDOR_SPEC); |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3558 | |
| 3559 | /* |
| 3560 | * Disable HC_SELECT_IN to be able to use the UHS mode select |
| 3561 | * configuration from Host Control2 register for all other |
| 3562 | * modes. |
| 3563 | * |
| 3564 | * Write 0 to HC_SELECT_IN and HC_SELECT_IN_EN field |
| 3565 | * in VENDOR_SPEC_FUNC |
| 3566 | */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3567 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 3568 | msm_host_offset->CORE_VENDOR_SPEC) |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3569 | & ~CORE_HC_SELECT_IN_EN |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3570 | & ~CORE_HC_SELECT_IN_MASK), host->ioaddr + |
| 3571 | msm_host_offset->CORE_VENDOR_SPEC); |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3572 | } |
| 3573 | mb(); |
| 3574 | |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3575 | if (sup_clock != msm_host->clk_rate) { |
| 3576 | pr_debug("%s: %s: setting clk rate to %u\n", |
| 3577 | mmc_hostname(host->mmc), __func__, sup_clock); |
| 3578 | rc = clk_set_rate(msm_host->clk, sup_clock); |
| 3579 | if (rc) { |
| 3580 | pr_err("%s: %s: Failed to set rate %u for host-clk : %d\n", |
| 3581 | mmc_hostname(host->mmc), __func__, |
| 3582 | sup_clock, rc); |
| 3583 | goto out; |
| 3584 | } |
| 3585 | msm_host->clk_rate = sup_clock; |
| 3586 | host->clock = clock; |
Can Guo | b903ad8 | 2017-10-17 13:22:53 +0800 | [diff] [blame] | 3587 | |
Vijay Viswanath | c9e2c0f | 2017-11-09 15:43:25 +0530 | [diff] [blame] | 3588 | if (!IS_ERR(msm_host->bus_aggr_clk) && |
| 3589 | msm_host->pdata->bus_clk_cnt) { |
| 3590 | bus_clk_rate = sdhci_msm_get_bus_aggr_clk_rate(host, |
| 3591 | sup_clock); |
| 3592 | if (bus_clk_rate >= 0) { |
| 3593 | rc = clk_set_rate(msm_host->bus_aggr_clk, |
| 3594 | bus_clk_rate); |
| 3595 | if (rc) { |
| 3596 | pr_err("%s: %s: Failed to set rate %ld for bus-aggr-clk : %d\n", |
| 3597 | mmc_hostname(host->mmc), |
| 3598 | __func__, bus_clk_rate, rc); |
| 3599 | goto out; |
| 3600 | } |
| 3601 | } else { |
| 3602 | pr_err("%s: %s: Unsupported apps clk rate %u for bus-aggr-clk, err: %ld\n", |
| 3603 | mmc_hostname(host->mmc), __func__, |
| 3604 | sup_clock, bus_clk_rate); |
| 3605 | } |
| 3606 | } |
| 3607 | |
Can Guo | b903ad8 | 2017-10-17 13:22:53 +0800 | [diff] [blame] | 3608 | /* Configure pinctrl drive type according to |
| 3609 | * current clock rate |
| 3610 | */ |
| 3611 | rc = sdhci_msm_config_pinctrl_drv_type(msm_host->pdata, clock); |
| 3612 | if (rc) |
| 3613 | pr_err("%s: %s: Failed to set pinctrl drive type for clock rate %u (%d)\n", |
| 3614 | mmc_hostname(host->mmc), __func__, |
| 3615 | clock, rc); |
| 3616 | |
Sahitya Tummala | 79edc6a | 2013-05-23 15:59:22 +0530 | [diff] [blame] | 3617 | /* |
| 3618 | * Update the bus vote in case of frequency change due to |
| 3619 | * clock scaling. |
| 3620 | */ |
| 3621 | sdhci_msm_bus_voting(host, 1); |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3622 | } |
| 3623 | out: |
| 3624 | sdhci_set_clock(host, clock); |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 3625 | } |
| 3626 | |
Sahitya Tummala | 1461343 | 2013-03-21 11:13:25 +0530 | [diff] [blame] | 3627 | static void sdhci_msm_set_uhs_signaling(struct sdhci_host *host, |
| 3628 | unsigned int uhs) |
| 3629 | { |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3630 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3631 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3632 | const struct sdhci_msm_offset *msm_host_offset = |
| 3633 | msm_host->offset; |
Sahitya Tummala | 1461343 | 2013-03-21 11:13:25 +0530 | [diff] [blame] | 3634 | u16 ctrl_2; |
| 3635 | |
| 3636 | ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); |
| 3637 | /* Select Bus Speed Mode for host */ |
| 3638 | ctrl_2 &= ~SDHCI_CTRL_UHS_MASK; |
Venkat Gopalakrishnan | 0a29da9 | 2015-01-09 12:19:16 -0800 | [diff] [blame] | 3639 | if ((uhs == MMC_TIMING_MMC_HS400) || |
| 3640 | (uhs == MMC_TIMING_MMC_HS200) || |
| 3641 | (uhs == MMC_TIMING_UHS_SDR104)) |
Sahitya Tummala | 1461343 | 2013-03-21 11:13:25 +0530 | [diff] [blame] | 3642 | ctrl_2 |= SDHCI_CTRL_UHS_SDR104; |
| 3643 | else if (uhs == MMC_TIMING_UHS_SDR12) |
| 3644 | ctrl_2 |= SDHCI_CTRL_UHS_SDR12; |
| 3645 | else if (uhs == MMC_TIMING_UHS_SDR25) |
| 3646 | ctrl_2 |= SDHCI_CTRL_UHS_SDR25; |
| 3647 | else if (uhs == MMC_TIMING_UHS_SDR50) |
| 3648 | ctrl_2 |= SDHCI_CTRL_UHS_SDR50; |
Venkat Gopalakrishnan | 0a29da9 | 2015-01-09 12:19:16 -0800 | [diff] [blame] | 3649 | else if ((uhs == MMC_TIMING_UHS_DDR50) || |
| 3650 | (uhs == MMC_TIMING_MMC_DDR52)) |
Sahitya Tummala | 1461343 | 2013-03-21 11:13:25 +0530 | [diff] [blame] | 3651 | ctrl_2 |= SDHCI_CTRL_UHS_DDR50; |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3652 | /* |
| 3653 | * When clock frquency is less than 100MHz, the feedback clock must be |
| 3654 | * provided and DLL must not be used so that tuning can be skipped. To |
| 3655 | * provide feedback clock, the mode selection can be any value less |
| 3656 | * than 3'b011 in bits [2:0] of HOST CONTROL2 register. |
| 3657 | */ |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3658 | if (host->clock <= CORE_FREQ_100MHZ) { |
| 3659 | if ((uhs == MMC_TIMING_MMC_HS400) || |
| 3660 | (uhs == MMC_TIMING_MMC_HS200) || |
| 3661 | (uhs == MMC_TIMING_UHS_SDR104)) |
| 3662 | ctrl_2 &= ~SDHCI_CTRL_UHS_MASK; |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 3663 | |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3664 | /* |
| 3665 | * Make sure DLL is disabled when not required |
| 3666 | * |
| 3667 | * Write 1 to DLL_RST bit of DLL_CONFIG register |
| 3668 | */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3669 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 3670 | msm_host_offset->CORE_DLL_CONFIG) |
| 3671 | | CORE_DLL_RST), host->ioaddr + |
| 3672 | msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3673 | |
| 3674 | /* Write 1 to DLL_PDN bit of DLL_CONFIG register */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3675 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 3676 | msm_host_offset->CORE_DLL_CONFIG) |
| 3677 | | CORE_DLL_PDN), host->ioaddr + |
| 3678 | msm_host_offset->CORE_DLL_CONFIG); |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 3679 | mb(); |
| 3680 | |
| 3681 | /* |
| 3682 | * The DLL needs to be restored and CDCLP533 recalibrated |
| 3683 | * when the clock frequency is set back to 400MHz. |
| 3684 | */ |
| 3685 | msm_host->calibration_done = false; |
| 3686 | } |
| 3687 | |
| 3688 | pr_debug("%s: %s-clock:%u uhs mode:%u ctrl_2:0x%x\n", |
| 3689 | mmc_hostname(host->mmc), __func__, host->clock, uhs, ctrl_2); |
Sahitya Tummala | 1461343 | 2013-03-21 11:13:25 +0530 | [diff] [blame] | 3690 | sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); |
| 3691 | |
| 3692 | } |
| 3693 | |
Venkat Gopalakrishnan | 3481197 | 2015-03-04 14:39:01 -0800 | [diff] [blame] | 3694 | #define MAX_TEST_BUS 60 |
Konstantin Dorfman | 98543bf | 2015-10-01 17:56:54 +0300 | [diff] [blame] | 3695 | #define DRV_NAME "cmdq-host" |
Ritesh Harjani | 17f5d81 | 2015-12-23 13:21:02 +0530 | [diff] [blame] | 3696 | static void sdhci_msm_cmdq_dump_debug_ram(struct sdhci_host *host) |
Konstantin Dorfman | 98543bf | 2015-10-01 17:56:54 +0300 | [diff] [blame] | 3697 | { |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3698 | int i = 0; |
Ritesh Harjani | 17f5d81 | 2015-12-23 13:21:02 +0530 | [diff] [blame] | 3699 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3700 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3701 | const struct sdhci_msm_offset *msm_host_offset = |
| 3702 | msm_host->offset; |
Ritesh Harjani | 17f5d81 | 2015-12-23 13:21:02 +0530 | [diff] [blame] | 3703 | struct cmdq_host *cq_host = host->cq_host; |
| 3704 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3705 | u32 version = sdhci_msm_readl_relaxed(host, |
| 3706 | msm_host_offset->CORE_MCI_VERSION); |
Konstantin Dorfman | 98543bf | 2015-10-01 17:56:54 +0300 | [diff] [blame] | 3707 | u16 minor = version & CORE_VERSION_TARGET_MASK; |
| 3708 | /* registers offset changed starting from 4.2.0 */ |
| 3709 | int offset = minor >= SDHCI_MSM_VER_420 ? 0 : 0x48; |
| 3710 | |
Sayali Lokhande | 6e7e6d5 | 2017-01-04 12:00:35 +0530 | [diff] [blame] | 3711 | if (cq_host->offset_changed) |
| 3712 | offset += CQ_V5_VENDOR_CFG; |
Konstantin Dorfman | 98543bf | 2015-10-01 17:56:54 +0300 | [diff] [blame] | 3713 | pr_err("---- Debug RAM dump ----\n"); |
| 3714 | pr_err(DRV_NAME ": Debug RAM wrap-around: 0x%08x | Debug RAM overlap: 0x%08x\n", |
| 3715 | cmdq_readl(cq_host, CQ_CMD_DBG_RAM_WA + offset), |
| 3716 | cmdq_readl(cq_host, CQ_CMD_DBG_RAM_OL + offset)); |
| 3717 | |
| 3718 | while (i < 16) { |
| 3719 | pr_err(DRV_NAME ": Debug RAM dump [%d]: 0x%08x\n", i, |
| 3720 | cmdq_readl(cq_host, CQ_CMD_DBG_RAM + offset + (4 * i))); |
| 3721 | i++; |
| 3722 | } |
| 3723 | pr_err("-------------------------\n"); |
| 3724 | } |
Sahitya Tummala | 67717bc | 2013-08-02 09:21:37 +0530 | [diff] [blame] | 3725 | |
Sayali Lokhande | c8ad70f | 2016-12-14 11:10:55 +0530 | [diff] [blame] | 3726 | static void sdhci_msm_cache_debug_data(struct sdhci_host *host) |
| 3727 | { |
| 3728 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3729 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 3730 | struct sdhci_msm_debug_data *cached_data = &msm_host->cached_data; |
| 3731 | |
| 3732 | memcpy(&cached_data->copy_mmc, msm_host->mmc, |
| 3733 | sizeof(struct mmc_host)); |
| 3734 | if (msm_host->mmc->card) |
| 3735 | memcpy(&cached_data->copy_card, msm_host->mmc->card, |
| 3736 | sizeof(struct mmc_card)); |
| 3737 | memcpy(&cached_data->copy_host, host, |
| 3738 | sizeof(struct sdhci_host)); |
| 3739 | } |
| 3740 | |
Sahitya Tummala | 67717bc | 2013-08-02 09:21:37 +0530 | [diff] [blame] | 3741 | void sdhci_msm_dump_vendor_regs(struct sdhci_host *host) |
| 3742 | { |
| 3743 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3744 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3745 | const struct sdhci_msm_offset *msm_host_offset = |
| 3746 | msm_host->offset; |
Sahitya Tummala | 67717bc | 2013-08-02 09:21:37 +0530 | [diff] [blame] | 3747 | int tbsel, tbsel2; |
| 3748 | int i, index = 0; |
| 3749 | u32 test_bus_val = 0; |
| 3750 | u32 debug_reg[MAX_TEST_BUS] = {0}; |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 3751 | u32 sts = 0; |
Sahitya Tummala | 67717bc | 2013-08-02 09:21:37 +0530 | [diff] [blame] | 3752 | |
Sayali Lokhande | c8ad70f | 2016-12-14 11:10:55 +0530 | [diff] [blame] | 3753 | sdhci_msm_cache_debug_data(host); |
Sahitya Tummala | 67717bc | 2013-08-02 09:21:37 +0530 | [diff] [blame] | 3754 | pr_info("----------- VENDOR REGISTER DUMP -----------\n"); |
Subhash Jadavani | a7a36b8 | 2015-10-16 18:33:25 -0700 | [diff] [blame] | 3755 | if (host->cq_host) |
Ritesh Harjani | 17f5d81 | 2015-12-23 13:21:02 +0530 | [diff] [blame] | 3756 | sdhci_msm_cmdq_dump_debug_ram(host); |
Konstantin Dorfman | 98543bf | 2015-10-01 17:56:54 +0300 | [diff] [blame] | 3757 | |
Sayali Lokhande | bff771e | 2016-11-30 11:35:22 +0530 | [diff] [blame] | 3758 | MMC_TRACE(host->mmc, "Data cnt: 0x%08x | Fifo cnt: 0x%08x\n", |
| 3759 | sdhci_msm_readl_relaxed(host, |
| 3760 | msm_host_offset->CORE_MCI_DATA_CNT), |
| 3761 | sdhci_msm_readl_relaxed(host, |
| 3762 | msm_host_offset->CORE_MCI_FIFO_CNT)); |
Sahitya Tummala | 67717bc | 2013-08-02 09:21:37 +0530 | [diff] [blame] | 3763 | pr_info("Data cnt: 0x%08x | Fifo cnt: 0x%08x | Int sts: 0x%08x\n", |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3764 | sdhci_msm_readl_relaxed(host, |
| 3765 | msm_host_offset->CORE_MCI_DATA_CNT), |
| 3766 | sdhci_msm_readl_relaxed(host, |
| 3767 | msm_host_offset->CORE_MCI_FIFO_CNT), |
| 3768 | sdhci_msm_readl_relaxed(host, |
| 3769 | msm_host_offset->CORE_MCI_STATUS)); |
Sahitya Tummala | 67717bc | 2013-08-02 09:21:37 +0530 | [diff] [blame] | 3770 | pr_info("DLL cfg: 0x%08x | DLL sts: 0x%08x | SDCC ver: 0x%08x\n", |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3771 | readl_relaxed(host->ioaddr + |
| 3772 | msm_host_offset->CORE_DLL_CONFIG), |
| 3773 | readl_relaxed(host->ioaddr + |
| 3774 | msm_host_offset->CORE_DLL_STATUS), |
| 3775 | sdhci_msm_readl_relaxed(host, |
| 3776 | msm_host_offset->CORE_MCI_VERSION)); |
Sahitya Tummala | 67717bc | 2013-08-02 09:21:37 +0530 | [diff] [blame] | 3777 | pr_info("Vndr func: 0x%08x | Vndr adma err : addr0: 0x%08x addr1: 0x%08x\n", |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3778 | readl_relaxed(host->ioaddr + |
| 3779 | msm_host_offset->CORE_VENDOR_SPEC), |
| 3780 | readl_relaxed(host->ioaddr + |
| 3781 | msm_host_offset->CORE_VENDOR_SPEC_ADMA_ERR_ADDR0), |
| 3782 | readl_relaxed(host->ioaddr + |
| 3783 | msm_host_offset->CORE_VENDOR_SPEC_ADMA_ERR_ADDR1)); |
Sahitya Tummala | 2ba05ae | 2015-03-03 14:03:20 +0530 | [diff] [blame] | 3784 | pr_info("Vndr func2: 0x%08x\n", |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3785 | readl_relaxed(host->ioaddr + |
| 3786 | msm_host_offset->CORE_VENDOR_SPEC_FUNC2)); |
Sahitya Tummala | 67717bc | 2013-08-02 09:21:37 +0530 | [diff] [blame] | 3787 | |
| 3788 | /* |
| 3789 | * tbsel indicates [2:0] bits and tbsel2 indicates [7:4] bits |
| 3790 | * of CORE_TESTBUS_CONFIG register. |
| 3791 | * |
| 3792 | * To select test bus 0 to 7 use tbsel and to select any test bus |
| 3793 | * above 7 use (tbsel2 | tbsel) to get the test bus number. For eg, |
| 3794 | * to select test bus 14, write 0x1E to CORE_TESTBUS_CONFIG register |
| 3795 | * i.e., tbsel2[7:4] = 0001, tbsel[2:0] = 110. |
| 3796 | */ |
Venkat Gopalakrishnan | 3481197 | 2015-03-04 14:39:01 -0800 | [diff] [blame] | 3797 | for (tbsel2 = 0; tbsel2 < 7; tbsel2++) { |
Sahitya Tummala | 67717bc | 2013-08-02 09:21:37 +0530 | [diff] [blame] | 3798 | for (tbsel = 0; tbsel < 8; tbsel++) { |
| 3799 | if (index >= MAX_TEST_BUS) |
| 3800 | break; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3801 | test_bus_val = |
| 3802 | (tbsel2 << msm_host_offset->CORE_TESTBUS_SEL2_BIT) | |
| 3803 | tbsel | msm_host_offset->CORE_TESTBUS_ENA; |
| 3804 | sdhci_msm_writel_relaxed(test_bus_val, host, |
| 3805 | msm_host_offset->CORE_TESTBUS_CONFIG); |
| 3806 | debug_reg[index++] = sdhci_msm_readl_relaxed(host, |
| 3807 | msm_host_offset->CORE_SDCC_DEBUG_REG); |
Sahitya Tummala | 67717bc | 2013-08-02 09:21:37 +0530 | [diff] [blame] | 3808 | } |
| 3809 | } |
| 3810 | for (i = 0; i < MAX_TEST_BUS; i = i + 4) |
| 3811 | pr_info(" Test bus[%d to %d]: 0x%08x 0x%08x 0x%08x 0x%08x\n", |
| 3812 | i, i + 3, debug_reg[i], debug_reg[i+1], |
| 3813 | debug_reg[i+2], debug_reg[i+3]); |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 3814 | if (host->is_crypto_en) { |
| 3815 | sdhci_msm_ice_get_status(host, &sts); |
| 3816 | pr_info("%s: ICE status %x\n", mmc_hostname(host->mmc), sts); |
Venkat Gopalakrishnan | 6324ee6 | 2015-10-22 17:53:30 -0700 | [diff] [blame] | 3817 | sdhci_msm_ice_print_regs(host); |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 3818 | } |
| 3819 | } |
| 3820 | |
| 3821 | static void sdhci_msm_reset(struct sdhci_host *host, u8 mask) |
| 3822 | { |
| 3823 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3824 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 3825 | |
| 3826 | /* Set ICE core to be reset in sync with SDHC core */ |
Veerabhadrarao Badiganti | 4e40ad6 | 2017-01-31 17:09:16 +0530 | [diff] [blame] | 3827 | if (msm_host->ice.pdev) { |
| 3828 | if (msm_host->ice_hci_support) |
| 3829 | writel_relaxed(1, host->ioaddr + |
| 3830 | HC_VENDOR_SPECIFIC_ICE_CTRL); |
| 3831 | else |
| 3832 | writel_relaxed(1, |
| 3833 | host->ioaddr + CORE_VENDOR_SPEC_ICE_CTRL); |
| 3834 | } |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 3835 | |
| 3836 | sdhci_reset(host, mask); |
Venkat Gopalakrishnan | 06f7f79 | 2015-05-29 17:56:59 -0700 | [diff] [blame] | 3837 | } |
| 3838 | |
Ritesh Harjani | 4a5ffd1 | 2015-07-15 13:32:07 +0530 | [diff] [blame] | 3839 | /* |
| 3840 | * sdhci_msm_enhanced_strobe_mask :- |
| 3841 | * Before running CMDQ transfers in HS400 Enhanced Strobe mode, |
| 3842 | * SW should write 3 to |
| 3843 | * HC_VENDOR_SPECIFIC_FUNC3.CMDEN_HS400_INPUT_MASK_CNT register. |
| 3844 | * The default reset value of this register is 2. |
| 3845 | */ |
| 3846 | static void sdhci_msm_enhanced_strobe_mask(struct sdhci_host *host, bool set) |
| 3847 | { |
| 3848 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3849 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3850 | const struct sdhci_msm_offset *msm_host_offset = |
| 3851 | msm_host->offset; |
Ritesh Harjani | 4a5ffd1 | 2015-07-15 13:32:07 +0530 | [diff] [blame] | 3852 | |
Ritesh Harjani | 70e2a71 | 2015-08-25 11:34:16 +0530 | [diff] [blame] | 3853 | if (!msm_host->enhanced_strobe || |
| 3854 | !mmc_card_strobe(msm_host->mmc->card)) { |
| 3855 | pr_debug("%s: host/card does not support hs400 enhanced strobe\n", |
Ritesh Harjani | 4a5ffd1 | 2015-07-15 13:32:07 +0530 | [diff] [blame] | 3856 | mmc_hostname(host->mmc)); |
| 3857 | return; |
| 3858 | } |
| 3859 | |
| 3860 | if (set) { |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3861 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 3862 | msm_host_offset->CORE_VENDOR_SPEC3) |
| 3863 | | CORE_CMDEN_HS400_INPUT_MASK_CNT), |
| 3864 | host->ioaddr + msm_host_offset->CORE_VENDOR_SPEC3); |
Ritesh Harjani | 4a5ffd1 | 2015-07-15 13:32:07 +0530 | [diff] [blame] | 3865 | } else { |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3866 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 3867 | msm_host_offset->CORE_VENDOR_SPEC3) |
| 3868 | & ~CORE_CMDEN_HS400_INPUT_MASK_CNT), |
| 3869 | host->ioaddr + msm_host_offset->CORE_VENDOR_SPEC3); |
Ritesh Harjani | 4a5ffd1 | 2015-07-15 13:32:07 +0530 | [diff] [blame] | 3870 | } |
| 3871 | } |
| 3872 | |
Venkat Gopalakrishnan | 06f7f79 | 2015-05-29 17:56:59 -0700 | [diff] [blame] | 3873 | static void sdhci_msm_clear_set_dumpregs(struct sdhci_host *host, bool set) |
| 3874 | { |
| 3875 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3876 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3877 | const struct sdhci_msm_offset *msm_host_offset = |
| 3878 | msm_host->offset; |
Venkat Gopalakrishnan | 06f7f79 | 2015-05-29 17:56:59 -0700 | [diff] [blame] | 3879 | |
| 3880 | if (set) { |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3881 | sdhci_msm_writel_relaxed(msm_host_offset->CORE_TESTBUS_ENA, |
| 3882 | host, msm_host_offset->CORE_TESTBUS_CONFIG); |
Venkat Gopalakrishnan | 06f7f79 | 2015-05-29 17:56:59 -0700 | [diff] [blame] | 3883 | } else { |
| 3884 | u32 value; |
| 3885 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3886 | value = sdhci_msm_readl_relaxed(host, |
| 3887 | msm_host_offset->CORE_TESTBUS_CONFIG); |
| 3888 | value &= ~(msm_host_offset->CORE_TESTBUS_ENA); |
| 3889 | sdhci_msm_writel_relaxed(value, host, |
| 3890 | msm_host_offset->CORE_TESTBUS_CONFIG); |
Venkat Gopalakrishnan | 06f7f79 | 2015-05-29 17:56:59 -0700 | [diff] [blame] | 3891 | } |
Sahitya Tummala | 67717bc | 2013-08-02 09:21:37 +0530 | [diff] [blame] | 3892 | } |
| 3893 | |
Pavan Anamula | 691dd59 | 2015-08-25 16:11:20 +0530 | [diff] [blame] | 3894 | void sdhci_msm_reset_workaround(struct sdhci_host *host, u32 enable) |
| 3895 | { |
| 3896 | u32 vendor_func2; |
| 3897 | unsigned long timeout; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3898 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3899 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 3900 | const struct sdhci_msm_offset *msm_host_offset = |
| 3901 | msm_host->offset; |
Pavan Anamula | 691dd59 | 2015-08-25 16:11:20 +0530 | [diff] [blame] | 3902 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3903 | vendor_func2 = readl_relaxed(host->ioaddr + |
| 3904 | msm_host_offset->CORE_VENDOR_SPEC_FUNC2); |
Pavan Anamula | 691dd59 | 2015-08-25 16:11:20 +0530 | [diff] [blame] | 3905 | |
| 3906 | if (enable) { |
| 3907 | writel_relaxed(vendor_func2 | HC_SW_RST_REQ, host->ioaddr + |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3908 | msm_host_offset->CORE_VENDOR_SPEC_FUNC2); |
Pavan Anamula | 691dd59 | 2015-08-25 16:11:20 +0530 | [diff] [blame] | 3909 | timeout = 10000; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3910 | while (readl_relaxed(host->ioaddr + |
| 3911 | msm_host_offset->CORE_VENDOR_SPEC_FUNC2) & HC_SW_RST_REQ) { |
Pavan Anamula | 691dd59 | 2015-08-25 16:11:20 +0530 | [diff] [blame] | 3912 | if (timeout == 0) { |
| 3913 | pr_info("%s: Applying wait idle disable workaround\n", |
| 3914 | mmc_hostname(host->mmc)); |
| 3915 | /* |
| 3916 | * Apply the reset workaround to not wait for |
| 3917 | * pending data transfers on AXI before |
| 3918 | * resetting the controller. This could be |
| 3919 | * risky if the transfers were stuck on the |
| 3920 | * AXI bus. |
| 3921 | */ |
| 3922 | vendor_func2 = readl_relaxed(host->ioaddr + |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3923 | msm_host_offset->CORE_VENDOR_SPEC_FUNC2); |
Pavan Anamula | 691dd59 | 2015-08-25 16:11:20 +0530 | [diff] [blame] | 3924 | writel_relaxed(vendor_func2 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3925 | HC_SW_RST_WAIT_IDLE_DIS, host->ioaddr + |
| 3926 | msm_host_offset->CORE_VENDOR_SPEC_FUNC2); |
Pavan Anamula | 691dd59 | 2015-08-25 16:11:20 +0530 | [diff] [blame] | 3927 | host->reset_wa_t = ktime_get(); |
| 3928 | return; |
| 3929 | } |
| 3930 | timeout--; |
| 3931 | udelay(10); |
| 3932 | } |
| 3933 | pr_info("%s: waiting for SW_RST_REQ is successful\n", |
| 3934 | mmc_hostname(host->mmc)); |
| 3935 | } else { |
| 3936 | writel_relaxed(vendor_func2 & ~HC_SW_RST_WAIT_IDLE_DIS, |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 3937 | host->ioaddr + msm_host_offset->CORE_VENDOR_SPEC_FUNC2); |
Pavan Anamula | 691dd59 | 2015-08-25 16:11:20 +0530 | [diff] [blame] | 3938 | } |
| 3939 | } |
| 3940 | |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 3941 | static void sdhci_msm_pm_qos_irq_unvote_work(struct work_struct *work) |
| 3942 | { |
| 3943 | struct sdhci_msm_pm_qos_irq *pm_qos_irq = |
Asutosh Das | 36c2e92 | 2015-12-01 12:19:58 +0530 | [diff] [blame] | 3944 | container_of(work, struct sdhci_msm_pm_qos_irq, |
| 3945 | unvote_work.work); |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 3946 | |
| 3947 | if (atomic_read(&pm_qos_irq->counter)) |
| 3948 | return; |
| 3949 | |
| 3950 | pm_qos_irq->latency = PM_QOS_DEFAULT_VALUE; |
| 3951 | pm_qos_update_request(&pm_qos_irq->req, pm_qos_irq->latency); |
| 3952 | } |
| 3953 | |
| 3954 | void sdhci_msm_pm_qos_irq_vote(struct sdhci_host *host) |
| 3955 | { |
| 3956 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3957 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 3958 | struct sdhci_msm_pm_qos_latency *latency = |
| 3959 | &msm_host->pdata->pm_qos_data.irq_latency; |
| 3960 | int counter; |
| 3961 | |
| 3962 | if (!msm_host->pm_qos_irq.enabled) |
| 3963 | return; |
| 3964 | |
| 3965 | counter = atomic_inc_return(&msm_host->pm_qos_irq.counter); |
| 3966 | /* Make sure to update the voting in case power policy has changed */ |
| 3967 | if (msm_host->pm_qos_irq.latency == latency->latency[host->power_policy] |
| 3968 | && counter > 1) |
| 3969 | return; |
| 3970 | |
Asutosh Das | 36c2e92 | 2015-12-01 12:19:58 +0530 | [diff] [blame] | 3971 | cancel_delayed_work_sync(&msm_host->pm_qos_irq.unvote_work); |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 3972 | msm_host->pm_qos_irq.latency = latency->latency[host->power_policy]; |
| 3973 | pm_qos_update_request(&msm_host->pm_qos_irq.req, |
| 3974 | msm_host->pm_qos_irq.latency); |
| 3975 | } |
| 3976 | |
| 3977 | void sdhci_msm_pm_qos_irq_unvote(struct sdhci_host *host, bool async) |
| 3978 | { |
| 3979 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 3980 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 3981 | int counter; |
| 3982 | |
| 3983 | if (!msm_host->pm_qos_irq.enabled) |
| 3984 | return; |
| 3985 | |
Subhash Jadavani | 4d81390 | 2015-10-15 12:16:43 -0700 | [diff] [blame] | 3986 | if (atomic_read(&msm_host->pm_qos_irq.counter)) { |
| 3987 | counter = atomic_dec_return(&msm_host->pm_qos_irq.counter); |
| 3988 | } else { |
| 3989 | WARN(1, "attempt to decrement pm_qos_irq.counter when it's 0"); |
| 3990 | return; |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 3991 | } |
Subhash Jadavani | 4d81390 | 2015-10-15 12:16:43 -0700 | [diff] [blame] | 3992 | |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 3993 | if (counter) |
| 3994 | return; |
| 3995 | |
| 3996 | if (async) { |
Vijay Viswanath | 1971d22 | 2018-03-01 12:01:47 +0530 | [diff] [blame] | 3997 | queue_delayed_work(msm_host->pm_qos_wq, |
| 3998 | &msm_host->pm_qos_irq.unvote_work, |
| 3999 | msecs_to_jiffies(QOS_REMOVE_DELAY_MS)); |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4000 | return; |
| 4001 | } |
| 4002 | |
| 4003 | msm_host->pm_qos_irq.latency = PM_QOS_DEFAULT_VALUE; |
| 4004 | pm_qos_update_request(&msm_host->pm_qos_irq.req, |
| 4005 | msm_host->pm_qos_irq.latency); |
| 4006 | } |
| 4007 | |
Gilad Broner | 68c5456 | 2015-09-20 11:59:46 +0300 | [diff] [blame] | 4008 | static ssize_t |
| 4009 | sdhci_msm_pm_qos_irq_show(struct device *dev, |
| 4010 | struct device_attribute *attr, char *buf) |
| 4011 | { |
| 4012 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 4013 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4014 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4015 | struct sdhci_msm_pm_qos_irq *irq = &msm_host->pm_qos_irq; |
| 4016 | |
| 4017 | return snprintf(buf, PAGE_SIZE, |
| 4018 | "IRQ PM QoS: enabled=%d, counter=%d, latency=%d\n", |
| 4019 | irq->enabled, atomic_read(&irq->counter), irq->latency); |
| 4020 | } |
| 4021 | |
| 4022 | static ssize_t |
| 4023 | sdhci_msm_pm_qos_irq_enable_show(struct device *dev, |
| 4024 | struct device_attribute *attr, char *buf) |
| 4025 | { |
| 4026 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 4027 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4028 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4029 | |
| 4030 | return snprintf(buf, PAGE_SIZE, "%u\n", msm_host->pm_qos_irq.enabled); |
| 4031 | } |
| 4032 | |
| 4033 | static ssize_t |
| 4034 | sdhci_msm_pm_qos_irq_enable_store(struct device *dev, |
| 4035 | struct device_attribute *attr, const char *buf, size_t count) |
| 4036 | { |
| 4037 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 4038 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4039 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4040 | uint32_t value; |
| 4041 | bool enable; |
| 4042 | int ret; |
| 4043 | |
| 4044 | ret = kstrtou32(buf, 0, &value); |
| 4045 | if (ret) |
| 4046 | goto out; |
| 4047 | enable = !!value; |
| 4048 | |
| 4049 | if (enable == msm_host->pm_qos_irq.enabled) |
| 4050 | goto out; |
| 4051 | |
| 4052 | msm_host->pm_qos_irq.enabled = enable; |
| 4053 | if (!enable) { |
Asutosh Das | 36c2e92 | 2015-12-01 12:19:58 +0530 | [diff] [blame] | 4054 | cancel_delayed_work_sync(&msm_host->pm_qos_irq.unvote_work); |
Gilad Broner | 68c5456 | 2015-09-20 11:59:46 +0300 | [diff] [blame] | 4055 | atomic_set(&msm_host->pm_qos_irq.counter, 0); |
| 4056 | msm_host->pm_qos_irq.latency = PM_QOS_DEFAULT_VALUE; |
| 4057 | pm_qos_update_request(&msm_host->pm_qos_irq.req, |
| 4058 | msm_host->pm_qos_irq.latency); |
| 4059 | } |
| 4060 | |
| 4061 | out: |
| 4062 | return count; |
| 4063 | } |
| 4064 | |
Krishna Konda | f85e31a | 2015-10-23 11:43:02 -0700 | [diff] [blame] | 4065 | #ifdef CONFIG_SMP |
| 4066 | static inline void set_affine_irq(struct sdhci_msm_host *msm_host, |
| 4067 | struct sdhci_host *host) |
| 4068 | { |
| 4069 | msm_host->pm_qos_irq.req.irq = host->irq; |
| 4070 | } |
| 4071 | #else |
| 4072 | static inline void set_affine_irq(struct sdhci_msm_host *msm_host, |
| 4073 | struct sdhci_host *host) { } |
| 4074 | #endif |
| 4075 | |
Vijay Viswanath | 1971d22 | 2018-03-01 12:01:47 +0530 | [diff] [blame] | 4076 | static bool sdhci_msm_pm_qos_wq_init(struct sdhci_msm_host *msm_host) |
| 4077 | { |
| 4078 | char *wq = NULL; |
| 4079 | bool ret = true; |
| 4080 | |
| 4081 | wq = kasprintf(GFP_KERNEL, "sdhci_msm_pm_qos/%s", |
| 4082 | dev_name(&msm_host->pdev->dev)); |
| 4083 | if (!wq) |
| 4084 | return false; |
| 4085 | /* |
| 4086 | * Create a work queue with flag WQ_MEM_RECLAIM set for |
| 4087 | * pm_qos_unvote work. Because mmc thread is created with |
| 4088 | * flag PF_MEMALLOC set, kernel will check for work queue |
| 4089 | * flag WQ_MEM_RECLAIM when flush the work queue. If work |
| 4090 | * queue flag WQ_MEM_RECLAIM is not set, kernel warning |
| 4091 | * will be triggered. |
| 4092 | */ |
| 4093 | msm_host->pm_qos_wq = create_workqueue(wq); |
| 4094 | if (!msm_host->pm_qos_wq) { |
| 4095 | ret = false; |
| 4096 | dev_err(&msm_host->pdev->dev, |
| 4097 | "failed to create pm qos unvote work queue\n"); |
| 4098 | } |
| 4099 | kfree(wq); |
| 4100 | return ret; |
| 4101 | } |
| 4102 | |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4103 | void sdhci_msm_pm_qos_irq_init(struct sdhci_host *host) |
| 4104 | { |
| 4105 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4106 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4107 | struct sdhci_msm_pm_qos_latency *irq_latency; |
Gilad Broner | 68c5456 | 2015-09-20 11:59:46 +0300 | [diff] [blame] | 4108 | int ret; |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4109 | |
| 4110 | if (!msm_host->pdata->pm_qos_data.irq_valid) |
| 4111 | return; |
| 4112 | |
| 4113 | /* Initialize only once as this gets called per partition */ |
| 4114 | if (msm_host->pm_qos_irq.enabled) |
| 4115 | return; |
| 4116 | |
| 4117 | atomic_set(&msm_host->pm_qos_irq.counter, 0); |
| 4118 | msm_host->pm_qos_irq.req.type = |
| 4119 | msm_host->pdata->pm_qos_data.irq_req_type; |
Krishna Konda | f85e31a | 2015-10-23 11:43:02 -0700 | [diff] [blame] | 4120 | if ((msm_host->pm_qos_irq.req.type != PM_QOS_REQ_AFFINE_CORES) && |
| 4121 | (msm_host->pm_qos_irq.req.type != PM_QOS_REQ_ALL_CORES)) |
| 4122 | set_affine_irq(msm_host, host); |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4123 | else |
| 4124 | cpumask_copy(&msm_host->pm_qos_irq.req.cpus_affine, |
| 4125 | cpumask_of(msm_host->pdata->pm_qos_data.irq_cpu)); |
| 4126 | |
Vijay Viswanath | 1971d22 | 2018-03-01 12:01:47 +0530 | [diff] [blame] | 4127 | sdhci_msm_pm_qos_wq_init(msm_host); |
| 4128 | |
Asutosh Das | 36c2e92 | 2015-12-01 12:19:58 +0530 | [diff] [blame] | 4129 | INIT_DELAYED_WORK(&msm_host->pm_qos_irq.unvote_work, |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4130 | sdhci_msm_pm_qos_irq_unvote_work); |
| 4131 | /* For initialization phase, set the performance latency */ |
| 4132 | irq_latency = &msm_host->pdata->pm_qos_data.irq_latency; |
| 4133 | msm_host->pm_qos_irq.latency = |
| 4134 | irq_latency->latency[SDHCI_PERFORMANCE_MODE]; |
| 4135 | pm_qos_add_request(&msm_host->pm_qos_irq.req, PM_QOS_CPU_DMA_LATENCY, |
| 4136 | msm_host->pm_qos_irq.latency); |
| 4137 | msm_host->pm_qos_irq.enabled = true; |
Gilad Broner | 68c5456 | 2015-09-20 11:59:46 +0300 | [diff] [blame] | 4138 | |
| 4139 | /* sysfs */ |
| 4140 | msm_host->pm_qos_irq.enable_attr.show = |
| 4141 | sdhci_msm_pm_qos_irq_enable_show; |
| 4142 | msm_host->pm_qos_irq.enable_attr.store = |
| 4143 | sdhci_msm_pm_qos_irq_enable_store; |
| 4144 | sysfs_attr_init(&msm_host->pm_qos_irq.enable_attr.attr); |
| 4145 | msm_host->pm_qos_irq.enable_attr.attr.name = "pm_qos_irq_enable"; |
| 4146 | msm_host->pm_qos_irq.enable_attr.attr.mode = S_IRUGO | S_IWUSR; |
| 4147 | ret = device_create_file(&msm_host->pdev->dev, |
| 4148 | &msm_host->pm_qos_irq.enable_attr); |
| 4149 | if (ret) |
| 4150 | pr_err("%s: fail to create pm_qos_irq_enable (%d)\n", |
| 4151 | __func__, ret); |
| 4152 | |
| 4153 | msm_host->pm_qos_irq.status_attr.show = sdhci_msm_pm_qos_irq_show; |
| 4154 | msm_host->pm_qos_irq.status_attr.store = NULL; |
| 4155 | sysfs_attr_init(&msm_host->pm_qos_irq.status_attr.attr); |
| 4156 | msm_host->pm_qos_irq.status_attr.attr.name = "pm_qos_irq_status"; |
| 4157 | msm_host->pm_qos_irq.status_attr.attr.mode = S_IRUGO; |
| 4158 | ret = device_create_file(&msm_host->pdev->dev, |
| 4159 | &msm_host->pm_qos_irq.status_attr); |
| 4160 | if (ret) |
| 4161 | pr_err("%s: fail to create pm_qos_irq_status (%d)\n", |
| 4162 | __func__, ret); |
| 4163 | } |
| 4164 | |
| 4165 | static ssize_t sdhci_msm_pm_qos_group_show(struct device *dev, |
| 4166 | struct device_attribute *attr, char *buf) |
| 4167 | { |
| 4168 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 4169 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4170 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4171 | struct sdhci_msm_pm_qos_group *group; |
| 4172 | int i; |
| 4173 | int nr_groups = msm_host->pdata->pm_qos_data.cpu_group_map.nr_groups; |
| 4174 | int offset = 0; |
| 4175 | |
| 4176 | for (i = 0; i < nr_groups; i++) { |
| 4177 | group = &msm_host->pm_qos[i]; |
| 4178 | offset += snprintf(&buf[offset], PAGE_SIZE, |
| 4179 | "Group #%d (mask=0x%lx) PM QoS: enabled=%d, counter=%d, latency=%d\n", |
| 4180 | i, group->req.cpus_affine.bits[0], |
| 4181 | msm_host->pm_qos_group_enable, |
| 4182 | atomic_read(&group->counter), |
| 4183 | group->latency); |
| 4184 | } |
| 4185 | |
| 4186 | return offset; |
| 4187 | } |
| 4188 | |
| 4189 | static ssize_t sdhci_msm_pm_qos_group_enable_show(struct device *dev, |
| 4190 | struct device_attribute *attr, char *buf) |
| 4191 | { |
| 4192 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 4193 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4194 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4195 | |
| 4196 | return snprintf(buf, PAGE_SIZE, "%s\n", |
| 4197 | msm_host->pm_qos_group_enable ? "enabled" : "disabled"); |
| 4198 | } |
| 4199 | |
| 4200 | static ssize_t sdhci_msm_pm_qos_group_enable_store(struct device *dev, |
| 4201 | struct device_attribute *attr, const char *buf, size_t count) |
| 4202 | { |
| 4203 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 4204 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4205 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4206 | int nr_groups = msm_host->pdata->pm_qos_data.cpu_group_map.nr_groups; |
| 4207 | uint32_t value; |
| 4208 | bool enable; |
| 4209 | int ret; |
| 4210 | int i; |
| 4211 | |
| 4212 | ret = kstrtou32(buf, 0, &value); |
| 4213 | if (ret) |
| 4214 | goto out; |
| 4215 | enable = !!value; |
| 4216 | |
| 4217 | if (enable == msm_host->pm_qos_group_enable) |
| 4218 | goto out; |
| 4219 | |
| 4220 | msm_host->pm_qos_group_enable = enable; |
| 4221 | if (!enable) { |
| 4222 | for (i = 0; i < nr_groups; i++) { |
Asutosh Das | 36c2e92 | 2015-12-01 12:19:58 +0530 | [diff] [blame] | 4223 | cancel_delayed_work_sync( |
| 4224 | &msm_host->pm_qos[i].unvote_work); |
Gilad Broner | 68c5456 | 2015-09-20 11:59:46 +0300 | [diff] [blame] | 4225 | atomic_set(&msm_host->pm_qos[i].counter, 0); |
| 4226 | msm_host->pm_qos[i].latency = PM_QOS_DEFAULT_VALUE; |
| 4227 | pm_qos_update_request(&msm_host->pm_qos[i].req, |
| 4228 | msm_host->pm_qos[i].latency); |
| 4229 | } |
| 4230 | } |
| 4231 | |
| 4232 | out: |
| 4233 | return count; |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4234 | } |
| 4235 | |
| 4236 | static int sdhci_msm_get_cpu_group(struct sdhci_msm_host *msm_host, int cpu) |
| 4237 | { |
| 4238 | int i; |
| 4239 | struct sdhci_msm_cpu_group_map *map = |
| 4240 | &msm_host->pdata->pm_qos_data.cpu_group_map; |
| 4241 | |
| 4242 | if (cpu < 0) |
| 4243 | goto not_found; |
| 4244 | |
| 4245 | for (i = 0; i < map->nr_groups; i++) |
| 4246 | if (cpumask_test_cpu(cpu, &map->mask[i])) |
| 4247 | return i; |
| 4248 | |
| 4249 | not_found: |
| 4250 | return -EINVAL; |
| 4251 | } |
| 4252 | |
| 4253 | void sdhci_msm_pm_qos_cpu_vote(struct sdhci_host *host, |
| 4254 | struct sdhci_msm_pm_qos_latency *latency, int cpu) |
| 4255 | { |
| 4256 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4257 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4258 | int group = sdhci_msm_get_cpu_group(msm_host, cpu); |
| 4259 | struct sdhci_msm_pm_qos_group *pm_qos_group; |
| 4260 | int counter; |
| 4261 | |
| 4262 | if (!msm_host->pm_qos_group_enable || group < 0) |
| 4263 | return; |
| 4264 | |
| 4265 | pm_qos_group = &msm_host->pm_qos[group]; |
| 4266 | counter = atomic_inc_return(&pm_qos_group->counter); |
| 4267 | |
| 4268 | /* Make sure to update the voting in case power policy has changed */ |
| 4269 | if (pm_qos_group->latency == latency->latency[host->power_policy] |
| 4270 | && counter > 1) |
| 4271 | return; |
| 4272 | |
Asutosh Das | 36c2e92 | 2015-12-01 12:19:58 +0530 | [diff] [blame] | 4273 | cancel_delayed_work_sync(&pm_qos_group->unvote_work); |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4274 | |
| 4275 | pm_qos_group->latency = latency->latency[host->power_policy]; |
| 4276 | pm_qos_update_request(&pm_qos_group->req, pm_qos_group->latency); |
| 4277 | } |
| 4278 | |
| 4279 | static void sdhci_msm_pm_qos_cpu_unvote_work(struct work_struct *work) |
| 4280 | { |
| 4281 | struct sdhci_msm_pm_qos_group *group = |
Asutosh Das | 36c2e92 | 2015-12-01 12:19:58 +0530 | [diff] [blame] | 4282 | container_of(work, struct sdhci_msm_pm_qos_group, |
| 4283 | unvote_work.work); |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4284 | |
| 4285 | if (atomic_read(&group->counter)) |
| 4286 | return; |
| 4287 | |
| 4288 | group->latency = PM_QOS_DEFAULT_VALUE; |
| 4289 | pm_qos_update_request(&group->req, group->latency); |
| 4290 | } |
| 4291 | |
Gilad Broner | 07d92eb | 2015-09-29 16:57:21 +0300 | [diff] [blame] | 4292 | bool sdhci_msm_pm_qos_cpu_unvote(struct sdhci_host *host, int cpu, bool async) |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4293 | { |
| 4294 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4295 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4296 | int group = sdhci_msm_get_cpu_group(msm_host, cpu); |
| 4297 | |
| 4298 | if (!msm_host->pm_qos_group_enable || group < 0 || |
| 4299 | atomic_dec_return(&msm_host->pm_qos[group].counter)) |
Gilad Broner | 07d92eb | 2015-09-29 16:57:21 +0300 | [diff] [blame] | 4300 | return false; |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4301 | |
| 4302 | if (async) { |
Vijay Viswanath | 1971d22 | 2018-03-01 12:01:47 +0530 | [diff] [blame] | 4303 | queue_delayed_work(msm_host->pm_qos_wq, |
| 4304 | &msm_host->pm_qos[group].unvote_work, |
| 4305 | msecs_to_jiffies(QOS_REMOVE_DELAY_MS)); |
Gilad Broner | 07d92eb | 2015-09-29 16:57:21 +0300 | [diff] [blame] | 4306 | return true; |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4307 | } |
| 4308 | |
| 4309 | msm_host->pm_qos[group].latency = PM_QOS_DEFAULT_VALUE; |
| 4310 | pm_qos_update_request(&msm_host->pm_qos[group].req, |
| 4311 | msm_host->pm_qos[group].latency); |
Gilad Broner | 07d92eb | 2015-09-29 16:57:21 +0300 | [diff] [blame] | 4312 | return true; |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4313 | } |
| 4314 | |
| 4315 | void sdhci_msm_pm_qos_cpu_init(struct sdhci_host *host, |
| 4316 | struct sdhci_msm_pm_qos_latency *latency) |
| 4317 | { |
| 4318 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4319 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4320 | int nr_groups = msm_host->pdata->pm_qos_data.cpu_group_map.nr_groups; |
| 4321 | struct sdhci_msm_pm_qos_group *group; |
| 4322 | int i; |
Gilad Broner | 68c5456 | 2015-09-20 11:59:46 +0300 | [diff] [blame] | 4323 | int ret; |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4324 | |
| 4325 | if (msm_host->pm_qos_group_enable) |
| 4326 | return; |
| 4327 | |
| 4328 | msm_host->pm_qos = kcalloc(nr_groups, sizeof(*msm_host->pm_qos), |
| 4329 | GFP_KERNEL); |
| 4330 | if (!msm_host->pm_qos) |
| 4331 | return; |
| 4332 | |
| 4333 | for (i = 0; i < nr_groups; i++) { |
| 4334 | group = &msm_host->pm_qos[i]; |
Asutosh Das | 36c2e92 | 2015-12-01 12:19:58 +0530 | [diff] [blame] | 4335 | INIT_DELAYED_WORK(&group->unvote_work, |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4336 | sdhci_msm_pm_qos_cpu_unvote_work); |
| 4337 | atomic_set(&group->counter, 0); |
| 4338 | group->req.type = PM_QOS_REQ_AFFINE_CORES; |
| 4339 | cpumask_copy(&group->req.cpus_affine, |
| 4340 | &msm_host->pdata->pm_qos_data.cpu_group_map.mask[i]); |
Ritesh Harjani | b41e057 | 2017-03-28 13:19:26 +0530 | [diff] [blame] | 4341 | /* We set default latency here for all pm_qos cpu groups. */ |
| 4342 | group->latency = PM_QOS_DEFAULT_VALUE; |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4343 | pm_qos_add_request(&group->req, PM_QOS_CPU_DMA_LATENCY, |
| 4344 | group->latency); |
Vijay Viswanath | d9311f9 | 2017-12-11 10:52:49 +0530 | [diff] [blame] | 4345 | pr_info("%s (): voted for group #%d (mask=0x%lx) latency=%d\n", |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4346 | __func__, i, |
| 4347 | group->req.cpus_affine.bits[0], |
Vijay Viswanath | d9311f9 | 2017-12-11 10:52:49 +0530 | [diff] [blame] | 4348 | group->latency); |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4349 | } |
Gilad Broner | 07d92eb | 2015-09-29 16:57:21 +0300 | [diff] [blame] | 4350 | msm_host->pm_qos_prev_cpu = -1; |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4351 | msm_host->pm_qos_group_enable = true; |
Gilad Broner | 68c5456 | 2015-09-20 11:59:46 +0300 | [diff] [blame] | 4352 | |
| 4353 | /* sysfs */ |
| 4354 | msm_host->pm_qos_group_status_attr.show = sdhci_msm_pm_qos_group_show; |
| 4355 | msm_host->pm_qos_group_status_attr.store = NULL; |
| 4356 | sysfs_attr_init(&msm_host->pm_qos_group_status_attr.attr); |
| 4357 | msm_host->pm_qos_group_status_attr.attr.name = |
| 4358 | "pm_qos_cpu_groups_status"; |
| 4359 | msm_host->pm_qos_group_status_attr.attr.mode = S_IRUGO; |
| 4360 | ret = device_create_file(&msm_host->pdev->dev, |
| 4361 | &msm_host->pm_qos_group_status_attr); |
| 4362 | if (ret) |
| 4363 | dev_err(&msm_host->pdev->dev, "%s: fail to create pm_qos_group_status_attr (%d)\n", |
| 4364 | __func__, ret); |
| 4365 | msm_host->pm_qos_group_enable_attr.show = |
| 4366 | sdhci_msm_pm_qos_group_enable_show; |
| 4367 | msm_host->pm_qos_group_enable_attr.store = |
| 4368 | sdhci_msm_pm_qos_group_enable_store; |
| 4369 | sysfs_attr_init(&msm_host->pm_qos_group_enable_attr.attr); |
| 4370 | msm_host->pm_qos_group_enable_attr.attr.name = |
| 4371 | "pm_qos_cpu_groups_enable"; |
| 4372 | msm_host->pm_qos_group_enable_attr.attr.mode = S_IRUGO; |
| 4373 | ret = device_create_file(&msm_host->pdev->dev, |
| 4374 | &msm_host->pm_qos_group_enable_attr); |
| 4375 | if (ret) |
| 4376 | dev_err(&msm_host->pdev->dev, "%s: fail to create pm_qos_group_enable_attr (%d)\n", |
| 4377 | __func__, ret); |
Gilad Broner | 4444599 | 2015-09-29 16:05:39 +0300 | [diff] [blame] | 4378 | } |
| 4379 | |
Gilad Broner | 07d92eb | 2015-09-29 16:57:21 +0300 | [diff] [blame] | 4380 | static void sdhci_msm_pre_req(struct sdhci_host *host, |
| 4381 | struct mmc_request *mmc_req) |
| 4382 | { |
| 4383 | int cpu; |
| 4384 | int group; |
| 4385 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4386 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4387 | int prev_group = sdhci_msm_get_cpu_group(msm_host, |
| 4388 | msm_host->pm_qos_prev_cpu); |
| 4389 | |
| 4390 | sdhci_msm_pm_qos_irq_vote(host); |
| 4391 | |
| 4392 | cpu = get_cpu(); |
| 4393 | put_cpu(); |
| 4394 | group = sdhci_msm_get_cpu_group(msm_host, cpu); |
| 4395 | if (group < 0) |
| 4396 | return; |
| 4397 | |
| 4398 | if (group != prev_group && prev_group >= 0) { |
| 4399 | sdhci_msm_pm_qos_cpu_unvote(host, |
| 4400 | msm_host->pm_qos_prev_cpu, false); |
| 4401 | prev_group = -1; /* make sure to vote for new group */ |
| 4402 | } |
| 4403 | |
| 4404 | if (prev_group < 0) { |
| 4405 | sdhci_msm_pm_qos_cpu_vote(host, |
| 4406 | msm_host->pdata->pm_qos_data.latency, cpu); |
| 4407 | msm_host->pm_qos_prev_cpu = cpu; |
| 4408 | } |
| 4409 | } |
| 4410 | |
| 4411 | static void sdhci_msm_post_req(struct sdhci_host *host, |
| 4412 | struct mmc_request *mmc_req) |
| 4413 | { |
| 4414 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4415 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4416 | |
| 4417 | sdhci_msm_pm_qos_irq_unvote(host, false); |
| 4418 | |
| 4419 | if (sdhci_msm_pm_qos_cpu_unvote(host, msm_host->pm_qos_prev_cpu, false)) |
| 4420 | msm_host->pm_qos_prev_cpu = -1; |
| 4421 | } |
| 4422 | |
| 4423 | static void sdhci_msm_init(struct sdhci_host *host) |
| 4424 | { |
| 4425 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4426 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4427 | |
| 4428 | sdhci_msm_pm_qos_irq_init(host); |
| 4429 | |
| 4430 | if (msm_host->pdata->pm_qos_data.legacy_valid) |
| 4431 | sdhci_msm_pm_qos_cpu_init(host, |
| 4432 | msm_host->pdata->pm_qos_data.latency); |
| 4433 | } |
| 4434 | |
Sahitya Tummala | 9150a94 | 2014-10-31 15:33:04 +0530 | [diff] [blame] | 4435 | static unsigned int sdhci_msm_get_current_limit(struct sdhci_host *host) |
| 4436 | { |
| 4437 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4438 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4439 | struct sdhci_msm_slot_reg_data *curr_slot = msm_host->pdata->vreg_data; |
| 4440 | u32 max_curr = 0; |
| 4441 | |
| 4442 | if (curr_slot && curr_slot->vdd_data) |
| 4443 | max_curr = curr_slot->vdd_data->hpm_uA; |
| 4444 | |
| 4445 | return max_curr; |
| 4446 | } |
| 4447 | |
Sahitya Tummala | 073ca55 | 2015-08-06 13:59:37 +0530 | [diff] [blame] | 4448 | static int sdhci_msm_notify_load(struct sdhci_host *host, enum mmc_load state) |
| 4449 | { |
| 4450 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4451 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4452 | int ret = 0; |
| 4453 | u32 clk_rate = 0; |
| 4454 | |
| 4455 | if (!IS_ERR(msm_host->ice_clk)) { |
| 4456 | clk_rate = (state == MMC_LOAD_LOW) ? |
| 4457 | msm_host->pdata->ice_clk_min : |
| 4458 | msm_host->pdata->ice_clk_max; |
| 4459 | if (msm_host->ice_clk_rate == clk_rate) |
| 4460 | return 0; |
| 4461 | pr_debug("%s: changing ICE clk rate to %u\n", |
| 4462 | mmc_hostname(host->mmc), clk_rate); |
| 4463 | ret = clk_set_rate(msm_host->ice_clk, clk_rate); |
| 4464 | if (ret) { |
| 4465 | pr_err("%s: ICE_CLK rate set failed (%d) for %u\n", |
| 4466 | mmc_hostname(host->mmc), ret, clk_rate); |
| 4467 | return ret; |
| 4468 | } |
| 4469 | msm_host->ice_clk_rate = clk_rate; |
| 4470 | } |
| 4471 | return 0; |
| 4472 | } |
| 4473 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4474 | static struct sdhci_ops sdhci_msm_ops = { |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 4475 | .crypto_engine_cfg = sdhci_msm_ice_cfg, |
Veerabhadrarao Badiganti | dec5880 | 2017-01-31 11:21:37 +0530 | [diff] [blame] | 4476 | .crypto_engine_cmdq_cfg = sdhci_msm_ice_cmdq_cfg, |
Veerabhadrarao Badiganti | 6c6b97a | 2017-03-08 06:51:49 +0530 | [diff] [blame] | 4477 | .crypto_engine_cfg_end = sdhci_msm_ice_cfg_end, |
Veerabhadrarao Badiganti | dec5880 | 2017-01-31 11:21:37 +0530 | [diff] [blame] | 4478 | .crypto_cfg_reset = sdhci_msm_ice_cfg_reset, |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 4479 | .crypto_engine_reset = sdhci_msm_ice_reset, |
Sahitya Tummala | 1461343 | 2013-03-21 11:13:25 +0530 | [diff] [blame] | 4480 | .set_uhs_signaling = sdhci_msm_set_uhs_signaling, |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4481 | .check_power_status = sdhci_msm_check_power_status, |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 4482 | .platform_execute_tuning = sdhci_msm_execute_tuning, |
Ritesh Harjani | ea70966 | 2015-05-27 15:40:24 +0530 | [diff] [blame] | 4483 | .enhanced_strobe = sdhci_msm_enhanced_strobe, |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 4484 | .toggle_cdr = sdhci_msm_toggle_cdr, |
Asutosh Das | 648f9d1 | 2013-01-10 21:11:04 +0530 | [diff] [blame] | 4485 | .get_max_segments = sdhci_msm_max_segs, |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 4486 | .set_clock = sdhci_msm_set_clock, |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 4487 | .get_min_clock = sdhci_msm_get_min_clock, |
| 4488 | .get_max_clock = sdhci_msm_get_max_clock, |
Sahitya Tummala | 67717bc | 2013-08-02 09:21:37 +0530 | [diff] [blame] | 4489 | .dump_vendor_regs = sdhci_msm_dump_vendor_regs, |
Asutosh Das | e5e9ca6 | 2013-07-30 19:08:36 +0530 | [diff] [blame] | 4490 | .config_auto_tuning_cmd = sdhci_msm_config_auto_tuning_cmd, |
Asutosh Das | 9d7ee2f | 2013-11-08 12:33:47 +0530 | [diff] [blame] | 4491 | .enable_controller_clock = sdhci_msm_enable_controller_clock, |
Venkat Gopalakrishnan | b8cb707 | 2015-01-09 11:04:34 -0800 | [diff] [blame] | 4492 | .set_bus_width = sdhci_set_bus_width, |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 4493 | .reset = sdhci_msm_reset, |
Venkat Gopalakrishnan | 06f7f79 | 2015-05-29 17:56:59 -0700 | [diff] [blame] | 4494 | .clear_set_dumpregs = sdhci_msm_clear_set_dumpregs, |
Ritesh Harjani | 4a5ffd1 | 2015-07-15 13:32:07 +0530 | [diff] [blame] | 4495 | .enhanced_strobe_mask = sdhci_msm_enhanced_strobe_mask, |
Pavan Anamula | 691dd59 | 2015-08-25 16:11:20 +0530 | [diff] [blame] | 4496 | .reset_workaround = sdhci_msm_reset_workaround, |
Gilad Broner | 07d92eb | 2015-09-29 16:57:21 +0300 | [diff] [blame] | 4497 | .init = sdhci_msm_init, |
| 4498 | .pre_req = sdhci_msm_pre_req, |
| 4499 | .post_req = sdhci_msm_post_req, |
Sahitya Tummala | 9150a94 | 2014-10-31 15:33:04 +0530 | [diff] [blame] | 4500 | .get_current_limit = sdhci_msm_get_current_limit, |
Sahitya Tummala | 073ca55 | 2015-08-06 13:59:37 +0530 | [diff] [blame] | 4501 | .notify_load = sdhci_msm_notify_load, |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4502 | }; |
| 4503 | |
Pratibhasagar V | d8acb7c | 2013-11-11 01:32:21 +0530 | [diff] [blame] | 4504 | static void sdhci_set_default_hw_caps(struct sdhci_msm_host *msm_host, |
| 4505 | struct sdhci_host *host) |
| 4506 | { |
Krishna Konda | 46fd143 | 2014-10-30 21:13:27 -0700 | [diff] [blame] | 4507 | u32 version, caps = 0; |
Pratibhasagar V | d8acb7c | 2013-11-11 01:32:21 +0530 | [diff] [blame] | 4508 | u16 minor; |
| 4509 | u8 major; |
Sahitya Tummala | 2ba05ae | 2015-03-03 14:03:20 +0530 | [diff] [blame] | 4510 | u32 val; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4511 | const struct sdhci_msm_offset *msm_host_offset = |
| 4512 | msm_host->offset; |
Pratibhasagar V | d8acb7c | 2013-11-11 01:32:21 +0530 | [diff] [blame] | 4513 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4514 | version = sdhci_msm_readl_relaxed(host, |
| 4515 | msm_host_offset->CORE_MCI_VERSION); |
Pratibhasagar V | d8acb7c | 2013-11-11 01:32:21 +0530 | [diff] [blame] | 4516 | major = (version & CORE_VERSION_MAJOR_MASK) >> |
| 4517 | CORE_VERSION_MAJOR_SHIFT; |
| 4518 | minor = version & CORE_VERSION_TARGET_MASK; |
| 4519 | |
Krishna Konda | 46fd143 | 2014-10-30 21:13:27 -0700 | [diff] [blame] | 4520 | caps = readl_relaxed(host->ioaddr + SDHCI_CAPABILITIES); |
| 4521 | |
Pratibhasagar V | d8acb7c | 2013-11-11 01:32:21 +0530 | [diff] [blame] | 4522 | /* |
| 4523 | * Starting with SDCC 5 controller (core major version = 1) |
Venkat Gopalakrishnan | 3ac8fd3 | 2014-08-28 18:15:45 -0700 | [diff] [blame] | 4524 | * controller won't advertise 3.0v, 1.8v and 8-bit features |
| 4525 | * except for some targets. |
Pratibhasagar V | d8acb7c | 2013-11-11 01:32:21 +0530 | [diff] [blame] | 4526 | */ |
| 4527 | if (major >= 1 && minor != 0x11 && minor != 0x12) { |
Venkat Gopalakrishnan | 3ac8fd3 | 2014-08-28 18:15:45 -0700 | [diff] [blame] | 4528 | struct sdhci_msm_reg_data *vdd_io_reg; |
Venkat Gopalakrishnan | 3ac8fd3 | 2014-08-28 18:15:45 -0700 | [diff] [blame] | 4529 | /* |
| 4530 | * Enable 1.8V support capability on controllers that |
| 4531 | * support dual voltage |
| 4532 | */ |
| 4533 | vdd_io_reg = msm_host->pdata->vreg_data->vdd_io_data; |
Krishna Konda | 46fd143 | 2014-10-30 21:13:27 -0700 | [diff] [blame] | 4534 | if (vdd_io_reg && (vdd_io_reg->high_vol_level > 2700000)) |
| 4535 | caps |= CORE_3_0V_SUPPORT; |
| 4536 | if (vdd_io_reg && (vdd_io_reg->low_vol_level < 1950000)) |
Venkat Gopalakrishnan | 3ac8fd3 | 2014-08-28 18:15:45 -0700 | [diff] [blame] | 4537 | caps |= CORE_1_8V_SUPPORT; |
Pratibhasagar V | ada4799 | 2013-12-09 20:42:32 +0530 | [diff] [blame] | 4538 | if (msm_host->pdata->mmc_bus_width == MMC_CAP_8_BIT_DATA) |
| 4539 | caps |= CORE_8_BIT_SUPPORT; |
Pratibhasagar V | d8acb7c | 2013-11-11 01:32:21 +0530 | [diff] [blame] | 4540 | } |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 4541 | |
| 4542 | /* |
Sahitya Tummala | 2ba05ae | 2015-03-03 14:03:20 +0530 | [diff] [blame] | 4543 | * Enable one MID mode for SDCC5 (major 1) on 8916/8939 (minor 0x2e) and |
| 4544 | * on 8992 (minor 0x3e) as a workaround to reset for data stuck issue. |
| 4545 | */ |
| 4546 | if (major == 1 && (minor == 0x2e || minor == 0x3e)) { |
Pavan Anamula | 691dd59 | 2015-08-25 16:11:20 +0530 | [diff] [blame] | 4547 | host->quirks2 |= SDHCI_QUIRK2_USE_RESET_WORKAROUND; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4548 | val = readl_relaxed(host->ioaddr + |
| 4549 | msm_host_offset->CORE_VENDOR_SPEC_FUNC2); |
Sahitya Tummala | 2ba05ae | 2015-03-03 14:03:20 +0530 | [diff] [blame] | 4550 | writel_relaxed((val | CORE_ONE_MID_EN), |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4551 | host->ioaddr + msm_host_offset->CORE_VENDOR_SPEC_FUNC2); |
Sahitya Tummala | 2ba05ae | 2015-03-03 14:03:20 +0530 | [diff] [blame] | 4552 | } |
| 4553 | /* |
Krishna Konda | 2faa7bb | 2014-06-04 01:25:16 -0700 | [diff] [blame] | 4554 | * SDCC 5 controller with major version 1, minor version 0x34 and later |
| 4555 | * with HS 400 mode support will use CM DLL instead of CDC LP 533 DLL. |
| 4556 | */ |
| 4557 | if ((major == 1) && (minor < 0x34)) |
| 4558 | msm_host->use_cdclp533 = true; |
Gilad Broner | 2a10ca0 | 2014-10-02 17:20:35 +0300 | [diff] [blame] | 4559 | |
| 4560 | /* |
Venkat Gopalakrishnan | c0a5c3a | 2015-02-03 16:10:07 -0800 | [diff] [blame] | 4561 | * SDCC 5 controller with major version 1, minor version 0x42 and later |
| 4562 | * will require additional steps when resetting DLL. |
Ritesh Harjani | ea70966 | 2015-05-27 15:40:24 +0530 | [diff] [blame] | 4563 | * It also supports HS400 enhanced strobe mode. |
Venkat Gopalakrishnan | c0a5c3a | 2015-02-03 16:10:07 -0800 | [diff] [blame] | 4564 | */ |
Ritesh Harjani | ea70966 | 2015-05-27 15:40:24 +0530 | [diff] [blame] | 4565 | if ((major == 1) && (minor >= 0x42)) { |
Venkat Gopalakrishnan | c0a5c3a | 2015-02-03 16:10:07 -0800 | [diff] [blame] | 4566 | msm_host->use_updated_dll_reset = true; |
Ritesh Harjani | ea70966 | 2015-05-27 15:40:24 +0530 | [diff] [blame] | 4567 | msm_host->enhanced_strobe = true; |
| 4568 | } |
Venkat Gopalakrishnan | c0a5c3a | 2015-02-03 16:10:07 -0800 | [diff] [blame] | 4569 | |
| 4570 | /* |
Talel Shenhar | 9a25b88 | 2015-06-02 13:36:35 +0300 | [diff] [blame] | 4571 | * SDCC 5 controller with major version 1 and minor version 0x42, |
| 4572 | * 0x46 and 0x49 currently uses 14lpp tech DLL whose internal |
| 4573 | * gating cannot guarantee MCLK timing requirement i.e. |
Ritesh Harjani | 764065e | 2015-05-13 14:14:45 +0530 | [diff] [blame] | 4574 | * when MCLK is gated OFF, it is not gated for less than 0.5us |
| 4575 | * and MCLK must be switched on for at-least 1us before DATA |
| 4576 | * starts coming. |
| 4577 | */ |
Talel Shenhar | 9a25b88 | 2015-06-02 13:36:35 +0300 | [diff] [blame] | 4578 | if ((major == 1) && ((minor == 0x42) || (minor == 0x46) || |
Veerabhadrarao Badiganti | 06d2c8c | 2017-09-12 17:24:09 +0530 | [diff] [blame] | 4579 | (minor == 0x49) || (minor >= 0x6b))) |
Ritesh Harjani | 764065e | 2015-05-13 14:14:45 +0530 | [diff] [blame] | 4580 | msm_host->use_14lpp_dll = true; |
Venkat Gopalakrishnan | b47cf40 | 2015-09-04 18:32:25 -0700 | [diff] [blame] | 4581 | |
Pavan Anamula | 5a256df | 2015-10-16 14:38:28 +0530 | [diff] [blame] | 4582 | /* Fake 3.0V support for SDIO devices which requires such voltage */ |
Veerabhadrarao Badiganti | ac24b40 | 2017-03-07 06:30:13 +0530 | [diff] [blame] | 4583 | if (msm_host->core_3_0v_support) { |
Pavan Anamula | 5a256df | 2015-10-16 14:38:28 +0530 | [diff] [blame] | 4584 | caps |= CORE_3_0V_SUPPORT; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4585 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 4586 | SDHCI_CAPABILITIES) | caps), host->ioaddr + |
| 4587 | msm_host_offset->CORE_VENDOR_SPEC_CAPABILITIES0); |
Pavan Anamula | 5a256df | 2015-10-16 14:38:28 +0530 | [diff] [blame] | 4588 | } |
| 4589 | |
Venkat Gopalakrishnan | b47cf40 | 2015-09-04 18:32:25 -0700 | [diff] [blame] | 4590 | if ((major == 1) && (minor >= 0x49)) |
| 4591 | msm_host->rclk_delay_fix = true; |
Ritesh Harjani | 764065e | 2015-05-13 14:14:45 +0530 | [diff] [blame] | 4592 | /* |
Gilad Broner | 2a10ca0 | 2014-10-02 17:20:35 +0300 | [diff] [blame] | 4593 | * Mask 64-bit support for controller with 32-bit address bus so that |
| 4594 | * smaller descriptor size will be used and improve memory consumption. |
Gilad Broner | 2a10ca0 | 2014-10-02 17:20:35 +0300 | [diff] [blame] | 4595 | */ |
Venkat Gopalakrishnan | 9a62e04 | 2015-03-03 16:14:55 -0800 | [diff] [blame] | 4596 | if (!msm_host->pdata->largeaddressbus) |
| 4597 | caps &= ~CORE_SYS_BUS_SUPPORT_64_BIT; |
| 4598 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4599 | writel_relaxed(caps, host->ioaddr + |
| 4600 | msm_host_offset->CORE_VENDOR_SPEC_CAPABILITIES0); |
Krishna Konda | 46fd143 | 2014-10-30 21:13:27 -0700 | [diff] [blame] | 4601 | /* keep track of the value in SDHCI_CAPABILITIES */ |
| 4602 | msm_host->caps_0 = caps; |
Ritesh Harjani | 8212477 | 2014-11-04 15:34:00 +0530 | [diff] [blame] | 4603 | |
Sayali Lokhande | 9efe657 | 2017-07-12 09:22:38 +0530 | [diff] [blame] | 4604 | if ((major == 1) && (minor >= 0x6b)) { |
Ritesh Harjani | 8212477 | 2014-11-04 15:34:00 +0530 | [diff] [blame] | 4605 | msm_host->ice_hci_support = true; |
Sayali Lokhande | 9efe657 | 2017-07-12 09:22:38 +0530 | [diff] [blame] | 4606 | host->cdr_support = true; |
| 4607 | } |
Veerabhadrarao Badiganti | b8f2b0c | 2018-03-14 15:21:05 +0530 | [diff] [blame] | 4608 | |
| 4609 | if ((major == 1) && (minor >= 0x71)) |
| 4610 | msm_host->need_dll_user_ctl = true; |
| 4611 | |
Pratibhasagar V | d8acb7c | 2013-11-11 01:32:21 +0530 | [diff] [blame] | 4612 | } |
| 4613 | |
Venkat Gopalakrishnan | d371f14 | 2015-05-29 17:49:46 -0700 | [diff] [blame] | 4614 | #ifdef CONFIG_MMC_CQ_HCI |
| 4615 | static void sdhci_msm_cmdq_init(struct sdhci_host *host, |
| 4616 | struct platform_device *pdev) |
| 4617 | { |
| 4618 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 4619 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 4620 | |
Ritesh Harjani | 7270ca2 | 2017-01-03 15:46:06 +0530 | [diff] [blame] | 4621 | if (nocmdq) { |
| 4622 | dev_dbg(&pdev->dev, "CMDQ disabled via cmdline\n"); |
| 4623 | return; |
| 4624 | } |
| 4625 | |
Venkat Gopalakrishnan | d371f14 | 2015-05-29 17:49:46 -0700 | [diff] [blame] | 4626 | host->cq_host = cmdq_pltfm_init(pdev); |
Subhash Jadavani | a7a36b8 | 2015-10-16 18:33:25 -0700 | [diff] [blame] | 4627 | if (IS_ERR(host->cq_host)) { |
Venkat Gopalakrishnan | d371f14 | 2015-05-29 17:49:46 -0700 | [diff] [blame] | 4628 | dev_dbg(&pdev->dev, "cmdq-pltfm init: failed: %ld\n", |
| 4629 | PTR_ERR(host->cq_host)); |
Subhash Jadavani | a7a36b8 | 2015-10-16 18:33:25 -0700 | [diff] [blame] | 4630 | host->cq_host = NULL; |
| 4631 | } else { |
Venkat Gopalakrishnan | d371f14 | 2015-05-29 17:49:46 -0700 | [diff] [blame] | 4632 | msm_host->mmc->caps2 |= MMC_CAP2_CMD_QUEUE; |
Subhash Jadavani | a7a36b8 | 2015-10-16 18:33:25 -0700 | [diff] [blame] | 4633 | } |
Venkat Gopalakrishnan | d371f14 | 2015-05-29 17:49:46 -0700 | [diff] [blame] | 4634 | } |
| 4635 | #else |
| 4636 | static void sdhci_msm_cmdq_init(struct sdhci_host *host, |
| 4637 | struct platform_device *pdev) |
| 4638 | { |
| 4639 | |
| 4640 | } |
| 4641 | #endif |
| 4642 | |
Subhash Jadavani | ebcd00d | 2015-07-09 17:28:42 -0700 | [diff] [blame] | 4643 | static bool sdhci_msm_is_bootdevice(struct device *dev) |
| 4644 | { |
| 4645 | if (strnstr(saved_command_line, "androidboot.bootdevice=", |
| 4646 | strlen(saved_command_line))) { |
| 4647 | char search_string[50]; |
| 4648 | |
| 4649 | snprintf(search_string, ARRAY_SIZE(search_string), |
| 4650 | "androidboot.bootdevice=%s", dev_name(dev)); |
| 4651 | if (strnstr(saved_command_line, search_string, |
| 4652 | strlen(saved_command_line))) |
| 4653 | return true; |
| 4654 | else |
| 4655 | return false; |
| 4656 | } |
| 4657 | |
| 4658 | /* |
| 4659 | * "androidboot.bootdevice=" argument is not present then |
| 4660 | * return true as we don't know the boot device anyways. |
| 4661 | */ |
| 4662 | return true; |
| 4663 | } |
| 4664 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4665 | static int sdhci_msm_probe(struct platform_device *pdev) |
| 4666 | { |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4667 | const struct sdhci_msm_offset *msm_host_offset; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4668 | struct sdhci_host *host; |
| 4669 | struct sdhci_pltfm_host *pltfm_host; |
| 4670 | struct sdhci_msm_host *msm_host; |
| 4671 | struct resource *core_memres = NULL; |
Konstantein Dorfman | e0be02d | 2015-01-27 12:06:02 +0200 | [diff] [blame] | 4672 | int ret = 0, dead = 0; |
Stephen Boyd | 8dce5c6 | 2013-04-24 14:19:46 -0700 | [diff] [blame] | 4673 | u16 host_version; |
Venkat Gopalakrishnan | 17edb35 | 2015-06-24 14:46:49 -0700 | [diff] [blame] | 4674 | u32 irq_status, irq_ctl; |
Sahitya Tummala | 079ed85 | 2015-10-29 20:18:45 +0530 | [diff] [blame] | 4675 | struct resource *tlmm_memres = NULL; |
| 4676 | void __iomem *tlmm_mem; |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 4677 | unsigned long flags; |
Gustavo Solaira | 46578dc2 | 2017-08-18 11:18:00 -0700 | [diff] [blame] | 4678 | bool force_probe; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4679 | |
| 4680 | pr_debug("%s: Enter %s\n", dev_name(&pdev->dev), __func__); |
| 4681 | msm_host = devm_kzalloc(&pdev->dev, sizeof(struct sdhci_msm_host), |
| 4682 | GFP_KERNEL); |
| 4683 | if (!msm_host) { |
| 4684 | ret = -ENOMEM; |
| 4685 | goto out; |
| 4686 | } |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4687 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4688 | if (of_find_compatible_node(NULL, NULL, "qcom,sdhci-msm-v5")) { |
| 4689 | msm_host->mci_removed = true; |
| 4690 | msm_host->offset = &sdhci_msm_offset_mci_removed; |
| 4691 | } else { |
| 4692 | msm_host->mci_removed = false; |
| 4693 | msm_host->offset = &sdhci_msm_offset_mci_present; |
| 4694 | } |
| 4695 | msm_host_offset = msm_host->offset; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4696 | msm_host->sdhci_msm_pdata.ops = &sdhci_msm_ops; |
| 4697 | host = sdhci_pltfm_init(pdev, &msm_host->sdhci_msm_pdata, 0); |
| 4698 | if (IS_ERR(host)) { |
| 4699 | ret = PTR_ERR(host); |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 4700 | goto out_host_free; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4701 | } |
| 4702 | |
| 4703 | pltfm_host = sdhci_priv(host); |
| 4704 | pltfm_host->priv = msm_host; |
| 4705 | msm_host->mmc = host->mmc; |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 4706 | msm_host->pdev = pdev; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4707 | |
Asutosh Das | 1c43b13 | 2018-01-11 18:08:40 +0530 | [diff] [blame] | 4708 | ret = sdhci_msm_get_socrev(&pdev->dev, msm_host); |
| 4709 | if (ret == -EPROBE_DEFER) { |
| 4710 | dev_err(&pdev->dev, "SoC version rd: fail: defer for now\n"); |
| 4711 | goto pltfm_free; |
| 4712 | } |
| 4713 | |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 4714 | /* get the ice device vops if present */ |
| 4715 | ret = sdhci_msm_ice_get_dev(host); |
| 4716 | if (ret == -EPROBE_DEFER) { |
| 4717 | /* |
| 4718 | * SDHCI driver might be probed before ICE driver does. |
| 4719 | * In that case we would like to return EPROBE_DEFER code |
| 4720 | * in order to delay its probing. |
| 4721 | */ |
| 4722 | dev_err(&pdev->dev, "%s: required ICE device not probed yet err = %d\n", |
| 4723 | __func__, ret); |
Venkat Gopalakrishnan | 94e408d | 2015-06-15 16:49:29 -0700 | [diff] [blame] | 4724 | goto pltfm_free; |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 4725 | |
| 4726 | } else if (ret == -ENODEV) { |
| 4727 | /* |
| 4728 | * ICE device is not enabled in DTS file. No need for further |
| 4729 | * initialization of ICE driver. |
| 4730 | */ |
| 4731 | dev_warn(&pdev->dev, "%s: ICE device is not enabled", |
| 4732 | __func__); |
| 4733 | } else if (ret) { |
| 4734 | dev_err(&pdev->dev, "%s: sdhci_msm_ice_get_dev failed %d\n", |
| 4735 | __func__, ret); |
Venkat Gopalakrishnan | 94e408d | 2015-06-15 16:49:29 -0700 | [diff] [blame] | 4736 | goto pltfm_free; |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 4737 | } |
| 4738 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4739 | /* Extract platform data */ |
| 4740 | if (pdev->dev.of_node) { |
Venkat Gopalakrishnan | 270580a | 2013-03-11 12:17:57 -0700 | [diff] [blame] | 4741 | ret = of_alias_get_id(pdev->dev.of_node, "sdhc"); |
Pavan Anamula | f2dda06 | 2016-03-30 22:07:56 +0530 | [diff] [blame] | 4742 | if (ret <= 0) { |
Venkat Gopalakrishnan | 270580a | 2013-03-11 12:17:57 -0700 | [diff] [blame] | 4743 | dev_err(&pdev->dev, "Failed to get slot index %d\n", |
| 4744 | ret); |
| 4745 | goto pltfm_free; |
| 4746 | } |
Subhash Jadavani | ebcd00d | 2015-07-09 17:28:42 -0700 | [diff] [blame] | 4747 | |
Gustavo Solaira | 46578dc2 | 2017-08-18 11:18:00 -0700 | [diff] [blame] | 4748 | /* Read property to determine if the probe is forced */ |
| 4749 | force_probe = of_find_property(pdev->dev.of_node, |
| 4750 | "qcom,force-sdhc1-probe", NULL); |
| 4751 | |
Subhash Jadavani | ebcd00d | 2015-07-09 17:28:42 -0700 | [diff] [blame] | 4752 | /* skip the probe if eMMC isn't a boot device */ |
Gustavo Solaira | 46578dc2 | 2017-08-18 11:18:00 -0700 | [diff] [blame] | 4753 | if ((ret == 1) && !sdhci_msm_is_bootdevice(&pdev->dev) |
| 4754 | && !force_probe) { |
Venkat Gopalakrishnan | b5dd776 | 2015-09-10 12:25:27 -0700 | [diff] [blame] | 4755 | ret = -ENODEV; |
Subhash Jadavani | ebcd00d | 2015-07-09 17:28:42 -0700 | [diff] [blame] | 4756 | goto pltfm_free; |
Venkat Gopalakrishnan | b5dd776 | 2015-09-10 12:25:27 -0700 | [diff] [blame] | 4757 | } |
Subhash Jadavani | ebcd00d | 2015-07-09 17:28:42 -0700 | [diff] [blame] | 4758 | |
Venkat Gopalakrishnan | 270580a | 2013-03-11 12:17:57 -0700 | [diff] [blame] | 4759 | if (disable_slots & (1 << (ret - 1))) { |
| 4760 | dev_info(&pdev->dev, "%s: Slot %d disabled\n", __func__, |
| 4761 | ret); |
| 4762 | ret = -ENODEV; |
| 4763 | goto pltfm_free; |
| 4764 | } |
| 4765 | |
Sayali Lokhande | 5f76832 | 2016-04-11 18:36:53 +0530 | [diff] [blame] | 4766 | if (ret <= 2) |
Venkat Gopalakrishnan | 095ad97 | 2015-09-30 18:46:18 -0700 | [diff] [blame] | 4767 | sdhci_slot[ret-1] = msm_host; |
| 4768 | |
Dov Levenglick | c9033ab | 2015-03-10 16:00:56 +0200 | [diff] [blame] | 4769 | msm_host->pdata = sdhci_msm_populate_pdata(&pdev->dev, |
| 4770 | msm_host); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4771 | if (!msm_host->pdata) { |
| 4772 | dev_err(&pdev->dev, "DT parsing error\n"); |
| 4773 | goto pltfm_free; |
| 4774 | } |
| 4775 | } else { |
| 4776 | dev_err(&pdev->dev, "No device tree node\n"); |
| 4777 | goto pltfm_free; |
| 4778 | } |
| 4779 | |
| 4780 | /* Setup Clocks */ |
| 4781 | |
| 4782 | /* Setup SDCC bus voter clock. */ |
| 4783 | msm_host->bus_clk = devm_clk_get(&pdev->dev, "bus_clk"); |
| 4784 | if (!IS_ERR_OR_NULL(msm_host->bus_clk)) { |
| 4785 | /* Vote for max. clk rate for max. performance */ |
| 4786 | ret = clk_set_rate(msm_host->bus_clk, INT_MAX); |
| 4787 | if (ret) |
| 4788 | goto pltfm_free; |
| 4789 | ret = clk_prepare_enable(msm_host->bus_clk); |
| 4790 | if (ret) |
| 4791 | goto pltfm_free; |
| 4792 | } |
| 4793 | |
| 4794 | /* Setup main peripheral bus clock */ |
| 4795 | msm_host->pclk = devm_clk_get(&pdev->dev, "iface_clk"); |
| 4796 | if (!IS_ERR(msm_host->pclk)) { |
| 4797 | ret = clk_prepare_enable(msm_host->pclk); |
| 4798 | if (ret) |
| 4799 | goto bus_clk_disable; |
| 4800 | } |
Asutosh Das | 9d7ee2f | 2013-11-08 12:33:47 +0530 | [diff] [blame] | 4801 | atomic_set(&msm_host->controller_clock, 1); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4802 | |
Vijay Viswanath | 674aeda | 2017-10-07 14:28:15 +0530 | [diff] [blame] | 4803 | /* Setup SDC ufs bus aggr clock */ |
| 4804 | msm_host->bus_aggr_clk = devm_clk_get(&pdev->dev, "bus_aggr_clk"); |
| 4805 | if (!IS_ERR(msm_host->bus_aggr_clk)) { |
| 4806 | ret = clk_prepare_enable(msm_host->bus_aggr_clk); |
| 4807 | if (ret) { |
| 4808 | dev_err(&pdev->dev, "Bus aggregate clk not enabled\n"); |
| 4809 | goto pclk_disable; |
| 4810 | } |
| 4811 | } |
| 4812 | |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 4813 | if (msm_host->ice.pdev) { |
| 4814 | /* Setup SDC ICE clock */ |
| 4815 | msm_host->ice_clk = devm_clk_get(&pdev->dev, "ice_core_clk"); |
| 4816 | if (!IS_ERR(msm_host->ice_clk)) { |
| 4817 | /* ICE core has only one clock frequency for now */ |
| 4818 | ret = clk_set_rate(msm_host->ice_clk, |
Sahitya Tummala | 073ca55 | 2015-08-06 13:59:37 +0530 | [diff] [blame] | 4819 | msm_host->pdata->ice_clk_max); |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 4820 | if (ret) { |
| 4821 | dev_err(&pdev->dev, "ICE_CLK rate set failed (%d) for %u\n", |
| 4822 | ret, |
Sahitya Tummala | 073ca55 | 2015-08-06 13:59:37 +0530 | [diff] [blame] | 4823 | msm_host->pdata->ice_clk_max); |
Vijay Viswanath | 674aeda | 2017-10-07 14:28:15 +0530 | [diff] [blame] | 4824 | goto bus_aggr_clk_disable; |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 4825 | } |
| 4826 | ret = clk_prepare_enable(msm_host->ice_clk); |
| 4827 | if (ret) |
Vijay Viswanath | 674aeda | 2017-10-07 14:28:15 +0530 | [diff] [blame] | 4828 | goto bus_aggr_clk_disable; |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 4829 | |
| 4830 | msm_host->ice_clk_rate = |
Sahitya Tummala | 073ca55 | 2015-08-06 13:59:37 +0530 | [diff] [blame] | 4831 | msm_host->pdata->ice_clk_max; |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 4832 | } |
| 4833 | } |
| 4834 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4835 | /* Setup SDC MMC clock */ |
| 4836 | msm_host->clk = devm_clk_get(&pdev->dev, "core_clk"); |
| 4837 | if (IS_ERR(msm_host->clk)) { |
| 4838 | ret = PTR_ERR(msm_host->clk); |
Vijay Viswanath | 674aeda | 2017-10-07 14:28:15 +0530 | [diff] [blame] | 4839 | goto bus_aggr_clk_disable; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4840 | } |
| 4841 | |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 4842 | /* Set to the minimum supported clock frequency */ |
| 4843 | ret = clk_set_rate(msm_host->clk, sdhci_msm_get_min_clock(host)); |
| 4844 | if (ret) { |
| 4845 | dev_err(&pdev->dev, "MClk rate set failed (%d)\n", ret); |
Vijay Viswanath | 674aeda | 2017-10-07 14:28:15 +0530 | [diff] [blame] | 4846 | goto bus_aggr_clk_disable; |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 4847 | } |
Sahitya Tummala | 020ede0d | 2013-06-07 13:03:07 +0530 | [diff] [blame] | 4848 | ret = clk_prepare_enable(msm_host->clk); |
| 4849 | if (ret) |
Vijay Viswanath | 674aeda | 2017-10-07 14:28:15 +0530 | [diff] [blame] | 4850 | goto bus_aggr_clk_disable; |
Sahitya Tummala | 020ede0d | 2013-06-07 13:03:07 +0530 | [diff] [blame] | 4851 | |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 4852 | msm_host->clk_rate = sdhci_msm_get_min_clock(host); |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 4853 | atomic_set(&msm_host->clks_on, 1); |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 4854 | |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 4855 | /* Setup CDC calibration fixed feedback clock */ |
| 4856 | msm_host->ff_clk = devm_clk_get(&pdev->dev, "cal_clk"); |
| 4857 | if (!IS_ERR(msm_host->ff_clk)) { |
| 4858 | ret = clk_prepare_enable(msm_host->ff_clk); |
| 4859 | if (ret) |
| 4860 | goto clk_disable; |
| 4861 | } |
| 4862 | |
| 4863 | /* Setup CDC calibration sleep clock */ |
| 4864 | msm_host->sleep_clk = devm_clk_get(&pdev->dev, "sleep_clk"); |
| 4865 | if (!IS_ERR(msm_host->sleep_clk)) { |
| 4866 | ret = clk_prepare_enable(msm_host->sleep_clk); |
| 4867 | if (ret) |
| 4868 | goto ff_clk_disable; |
| 4869 | } |
| 4870 | |
Venkat Gopalakrishnan | 9e06963 | 2013-06-12 11:16:37 -0700 | [diff] [blame] | 4871 | msm_host->saved_tuning_phase = INVALID_TUNING_PHASE; |
| 4872 | |
Sahitya Tummala | 79edc6a | 2013-05-23 15:59:22 +0530 | [diff] [blame] | 4873 | ret = sdhci_msm_bus_register(msm_host, pdev); |
| 4874 | if (ret) |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 4875 | goto sleep_clk_disable; |
Sahitya Tummala | 79edc6a | 2013-05-23 15:59:22 +0530 | [diff] [blame] | 4876 | |
| 4877 | if (msm_host->msm_bus_vote.client_handle) |
| 4878 | INIT_DELAYED_WORK(&msm_host->msm_bus_vote.vote_work, |
| 4879 | sdhci_msm_bus_work); |
| 4880 | sdhci_msm_bus_voting(host, 1); |
| 4881 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4882 | /* Setup regulators */ |
| 4883 | ret = sdhci_msm_vreg_init(&pdev->dev, msm_host->pdata, true); |
| 4884 | if (ret) { |
| 4885 | dev_err(&pdev->dev, "Regulator setup failed (%d)\n", ret); |
Sahitya Tummala | 79edc6a | 2013-05-23 15:59:22 +0530 | [diff] [blame] | 4886 | goto bus_unregister; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4887 | } |
| 4888 | |
| 4889 | /* Reset the core and Enable SDHC mode */ |
| 4890 | core_memres = platform_get_resource_byname(pdev, |
| 4891 | IORESOURCE_MEM, "core_mem"); |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4892 | if (!msm_host->mci_removed) { |
| 4893 | if (!core_memres) { |
| 4894 | dev_err(&pdev->dev, "Failed to get iomem resource\n"); |
| 4895 | goto vreg_deinit; |
| 4896 | } |
| 4897 | msm_host->core_mem = devm_ioremap(&pdev->dev, |
| 4898 | core_memres->start, resource_size(core_memres)); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4899 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4900 | if (!msm_host->core_mem) { |
| 4901 | dev_err(&pdev->dev, "Failed to remap registers\n"); |
| 4902 | ret = -ENOMEM; |
| 4903 | goto vreg_deinit; |
| 4904 | } |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4905 | } |
| 4906 | |
Sahitya Tummala | 079ed85 | 2015-10-29 20:18:45 +0530 | [diff] [blame] | 4907 | tlmm_memres = platform_get_resource_byname(pdev, |
| 4908 | IORESOURCE_MEM, "tlmm_mem"); |
| 4909 | if (tlmm_memres) { |
| 4910 | tlmm_mem = devm_ioremap(&pdev->dev, tlmm_memres->start, |
| 4911 | resource_size(tlmm_memres)); |
| 4912 | |
| 4913 | if (!tlmm_mem) { |
| 4914 | dev_err(&pdev->dev, "Failed to remap tlmm registers\n"); |
| 4915 | ret = -ENOMEM; |
| 4916 | goto vreg_deinit; |
| 4917 | } |
| 4918 | writel_relaxed(readl_relaxed(tlmm_mem) | 0x2, tlmm_mem); |
Sahitya Tummala | 079ed85 | 2015-10-29 20:18:45 +0530 | [diff] [blame] | 4919 | } |
| 4920 | |
Sahitya Tummala | 66b0fe3 | 2013-04-25 11:50:56 +0530 | [diff] [blame] | 4921 | /* |
Venkat Gopalakrishnan | 17edb35 | 2015-06-24 14:46:49 -0700 | [diff] [blame] | 4922 | * Reset the vendor spec register to power on reset state. |
Sahitya Tummala | 66b0fe3 | 2013-04-25 11:50:56 +0530 | [diff] [blame] | 4923 | */ |
Venkat Gopalakrishnan | 17edb35 | 2015-06-24 14:46:49 -0700 | [diff] [blame] | 4924 | writel_relaxed(CORE_VENDOR_SPEC_POR_VAL, |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4925 | host->ioaddr + msm_host_offset->CORE_VENDOR_SPEC); |
Sahitya Tummala | 66b0fe3 | 2013-04-25 11:50:56 +0530 | [diff] [blame] | 4926 | |
Veerabhadrarao Badiganti | 6b495d4 | 2017-09-12 14:41:39 +0530 | [diff] [blame] | 4927 | /* |
| 4928 | * Ensure SDHCI FIFO is enabled by disabling alternative FIFO |
| 4929 | */ |
| 4930 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 4931 | msm_host_offset->CORE_VENDOR_SPEC3) & |
| 4932 | ~CORE_FIFO_ALT_EN), host->ioaddr + |
| 4933 | msm_host_offset->CORE_VENDOR_SPEC3); |
| 4934 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4935 | if (!msm_host->mci_removed) { |
| 4936 | /* Set HC_MODE_EN bit in HC_MODE register */ |
| 4937 | writel_relaxed(HC_MODE_EN, (msm_host->core_mem + CORE_HC_MODE)); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4938 | |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4939 | /* Set FF_CLK_SW_RST_DIS bit in HC_MODE register */ |
| 4940 | writel_relaxed(readl_relaxed(msm_host->core_mem + |
| 4941 | CORE_HC_MODE) | FF_CLK_SW_RST_DIS, |
| 4942 | msm_host->core_mem + CORE_HC_MODE); |
| 4943 | } |
Pratibhasagar V | d8acb7c | 2013-11-11 01:32:21 +0530 | [diff] [blame] | 4944 | sdhci_set_default_hw_caps(msm_host, host); |
Krishna Konda | 46fd143 | 2014-10-30 21:13:27 -0700 | [diff] [blame] | 4945 | |
| 4946 | /* |
| 4947 | * Set the PAD_PWR_SWTICH_EN bit so that the PAD_PWR_SWITCH bit can |
| 4948 | * be used as required later on. |
| 4949 | */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4950 | writel_relaxed((readl_relaxed(host->ioaddr + |
| 4951 | msm_host_offset->CORE_VENDOR_SPEC) | |
| 4952 | CORE_IO_PAD_PWR_SWITCH_EN), host->ioaddr + |
| 4953 | msm_host_offset->CORE_VENDOR_SPEC); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4954 | /* |
Subhash Jadavani | 2813734 | 2013-05-14 17:46:43 +0530 | [diff] [blame] | 4955 | * CORE_SW_RST above may trigger power irq if previous status of PWRCTL |
| 4956 | * was either BUS_ON or IO_HIGH_V. So before we enable the power irq |
| 4957 | * interrupt in GIC (by registering the interrupt handler), we need to |
| 4958 | * ensure that any pending power irq interrupt status is acknowledged |
| 4959 | * otherwise power irq interrupt handler would be fired prematurely. |
| 4960 | */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4961 | irq_status = sdhci_msm_readl_relaxed(host, |
| 4962 | msm_host_offset->CORE_PWRCTL_STATUS); |
| 4963 | sdhci_msm_writel_relaxed(irq_status, host, |
| 4964 | msm_host_offset->CORE_PWRCTL_CLEAR); |
| 4965 | irq_ctl = sdhci_msm_readl_relaxed(host, |
| 4966 | msm_host_offset->CORE_PWRCTL_CTL); |
| 4967 | |
Subhash Jadavani | 2813734 | 2013-05-14 17:46:43 +0530 | [diff] [blame] | 4968 | if (irq_status & (CORE_PWRCTL_BUS_ON | CORE_PWRCTL_BUS_OFF)) |
| 4969 | irq_ctl |= CORE_PWRCTL_BUS_SUCCESS; |
| 4970 | if (irq_status & (CORE_PWRCTL_IO_HIGH | CORE_PWRCTL_IO_LOW)) |
| 4971 | irq_ctl |= CORE_PWRCTL_IO_SUCCESS; |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 4972 | sdhci_msm_writel_relaxed(irq_ctl, host, |
| 4973 | msm_host_offset->CORE_PWRCTL_CTL); |
Krishna Konda | 46fd143 | 2014-10-30 21:13:27 -0700 | [diff] [blame] | 4974 | |
Subhash Jadavani | 2813734 | 2013-05-14 17:46:43 +0530 | [diff] [blame] | 4975 | /* |
| 4976 | * Ensure that above writes are propogated before interrupt enablement |
| 4977 | * in GIC. |
| 4978 | */ |
| 4979 | mb(); |
| 4980 | |
| 4981 | /* |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4982 | * Following are the deviations from SDHC spec v3.0 - |
| 4983 | * 1. Card detection is handled using separate GPIO. |
| 4984 | * 2. Bus power control is handled by interacting with PMIC. |
| 4985 | */ |
| 4986 | host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION; |
| 4987 | host->quirks |= SDHCI_QUIRK_SINGLE_POWER_WRITE; |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 4988 | host->quirks |= SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN; |
Talel Shenhar | 4661c2a | 2015-06-24 15:49:30 +0300 | [diff] [blame] | 4989 | host->quirks |= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC; |
Sahitya Tummala | 22dd336 | 2013-02-28 19:50:51 +0530 | [diff] [blame] | 4990 | host->quirks2 |= SDHCI_QUIRK2_ALWAYS_USE_BASE_CLOCK; |
Sahitya Tummala | 87d4394 | 2013-04-12 11:49:11 +0530 | [diff] [blame] | 4991 | host->quirks2 |= SDHCI_QUIRK2_IGNORE_DATATOUT_FOR_R1BCMD; |
Sahitya Tummala | 314162c | 2013-04-12 12:11:20 +0530 | [diff] [blame] | 4992 | host->quirks2 |= SDHCI_QUIRK2_BROKEN_PRESET_VALUE; |
Sahitya Tummala | 7c9780d | 2013-04-12 11:59:25 +0530 | [diff] [blame] | 4993 | host->quirks2 |= SDHCI_QUIRK2_USE_RESERVED_MAX_TIMEOUT; |
Sahitya Tummala | 43fb337 | 2016-04-05 14:00:48 +0530 | [diff] [blame] | 4994 | host->quirks2 |= SDHCI_QUIRK2_NON_STANDARD_TUNING; |
Sahitya Tummala | db5e53d | 2016-04-05 15:29:35 +0530 | [diff] [blame] | 4995 | host->quirks2 |= SDHCI_QUIRK2_USE_PIO_FOR_EMMC_TUNING; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 4996 | |
Sahitya Tummala | a5733ab5 | 2013-06-10 16:32:51 +0530 | [diff] [blame] | 4997 | if (host->quirks2 & SDHCI_QUIRK2_ALWAYS_USE_BASE_CLOCK) |
| 4998 | host->quirks2 |= SDHCI_QUIRK2_DIVIDE_TOUT_BY_4; |
| 4999 | |
Stephen Boyd | 8dce5c6 | 2013-04-24 14:19:46 -0700 | [diff] [blame] | 5000 | host_version = readw_relaxed((host->ioaddr + SDHCI_HOST_VERSION)); |
Venkat Gopalakrishnan | a58f91f | 2012-09-17 16:00:15 -0700 | [diff] [blame] | 5001 | dev_dbg(&pdev->dev, "Host Version: 0x%x Vendor Version 0x%x\n", |
| 5002 | host_version, ((host_version & SDHCI_VENDOR_VER_MASK) >> |
| 5003 | SDHCI_VENDOR_VER_SHIFT)); |
| 5004 | if (((host_version & SDHCI_VENDOR_VER_MASK) >> |
| 5005 | SDHCI_VENDOR_VER_SHIFT) == SDHCI_VER_100) { |
| 5006 | /* |
| 5007 | * Add 40us delay in interrupt handler when |
| 5008 | * operating at initialization frequency(400KHz). |
| 5009 | */ |
| 5010 | host->quirks2 |= SDHCI_QUIRK2_SLOW_INT_CLR; |
| 5011 | /* |
| 5012 | * Set Software Reset for DAT line in Software |
| 5013 | * Reset Register (Bit 2). |
| 5014 | */ |
| 5015 | host->quirks2 |= SDHCI_QUIRK2_RDWR_TX_ACTIVE_EOT; |
| 5016 | } |
| 5017 | |
Asutosh Das | 214b966 | 2013-06-13 14:27:42 +0530 | [diff] [blame] | 5018 | host->quirks2 |= SDHCI_QUIRK2_IGN_DATA_END_BIT_ERROR; |
| 5019 | |
Venkat Gopalakrishnan | a58f91f | 2012-09-17 16:00:15 -0700 | [diff] [blame] | 5020 | /* Setup PWRCTL irq */ |
Konstantein Dorfman | e0be02d | 2015-01-27 12:06:02 +0200 | [diff] [blame] | 5021 | msm_host->pwr_irq = platform_get_irq_byname(pdev, "pwr_irq"); |
| 5022 | if (msm_host->pwr_irq < 0) { |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5023 | dev_err(&pdev->dev, "Failed to get pwr_irq by name (%d)\n", |
Konstantein Dorfman | e0be02d | 2015-01-27 12:06:02 +0200 | [diff] [blame] | 5024 | msm_host->pwr_irq); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5025 | goto vreg_deinit; |
| 5026 | } |
Subhash Jadavani | de139e8 | 2017-09-27 11:04:40 +0530 | [diff] [blame] | 5027 | |
Konstantein Dorfman | e0be02d | 2015-01-27 12:06:02 +0200 | [diff] [blame] | 5028 | ret = devm_request_threaded_irq(&pdev->dev, msm_host->pwr_irq, NULL, |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5029 | sdhci_msm_pwr_irq, IRQF_ONESHOT, |
Venkat Gopalakrishnan | 7944a37 | 2012-09-11 16:13:31 -0700 | [diff] [blame] | 5030 | dev_name(&pdev->dev), host); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5031 | if (ret) { |
| 5032 | dev_err(&pdev->dev, "Request threaded irq(%d) failed (%d)\n", |
Konstantein Dorfman | e0be02d | 2015-01-27 12:06:02 +0200 | [diff] [blame] | 5033 | msm_host->pwr_irq, ret); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5034 | goto vreg_deinit; |
| 5035 | } |
| 5036 | |
| 5037 | /* Enable pwr irq interrupts */ |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 5038 | sdhci_msm_writel_relaxed(INT_MASK, host, |
| 5039 | msm_host_offset->CORE_PWRCTL_MASK); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5040 | |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 5041 | #ifdef CONFIG_MMC_CLKGATE |
| 5042 | /* Set clock gating delay to be used when CONFIG_MMC_CLKGATE is set */ |
| 5043 | msm_host->mmc->clkgate_delay = SDHCI_MSM_MMC_CLK_GATE_DELAY; |
| 5044 | #endif |
| 5045 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5046 | /* Set host capabilities */ |
| 5047 | msm_host->mmc->caps |= msm_host->pdata->mmc_bus_width; |
| 5048 | msm_host->mmc->caps |= msm_host->pdata->caps; |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5049 | msm_host->mmc->caps |= MMC_CAP_AGGRESSIVE_PM; |
Ritesh Harjani | 3435472 | 2015-08-05 11:27:00 +0530 | [diff] [blame] | 5050 | msm_host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5051 | msm_host->mmc->caps2 |= msm_host->pdata->caps2; |
Venkat Gopalakrishnan | 97c1611 | 2014-12-16 18:26:25 -0800 | [diff] [blame] | 5052 | msm_host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC; |
Venkat Gopalakrishnan | 97c1611 | 2014-12-16 18:26:25 -0800 | [diff] [blame] | 5053 | msm_host->mmc->caps2 |= MMC_CAP2_HS400_POST_TUNING; |
Talel Shenhar | 3d1dbf3 | 2015-05-13 14:08:39 +0300 | [diff] [blame] | 5054 | msm_host->mmc->caps2 |= MMC_CAP2_CLK_SCALE; |
Pavan Anamula | 07d62ef | 2015-08-24 18:56:22 +0530 | [diff] [blame] | 5055 | msm_host->mmc->caps2 |= MMC_CAP2_SANITIZE; |
Krishna Konda | 79fdcc2 | 2015-09-26 17:55:48 -0700 | [diff] [blame] | 5056 | msm_host->mmc->caps2 |= MMC_CAP2_MAX_DISCARD_SIZE; |
Maya Erez | b62c9e3 | 2015-10-07 21:58:28 +0300 | [diff] [blame] | 5057 | msm_host->mmc->caps2 |= MMC_CAP2_SLEEP_AWAKE; |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5058 | msm_host->mmc->pm_caps |= MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5059 | |
| 5060 | if (msm_host->pdata->nonremovable) |
| 5061 | msm_host->mmc->caps |= MMC_CAP_NONREMOVABLE; |
| 5062 | |
Guoping Yu | f7c9133 | 2014-08-20 16:56:18 +0800 | [diff] [blame] | 5063 | if (msm_host->pdata->nonhotplug) |
| 5064 | msm_host->mmc->caps2 |= MMC_CAP2_NONHOTPLUG; |
| 5065 | |
Subhash Jadavani | 7ae9c2c | 2017-03-31 16:50:59 -0700 | [diff] [blame] | 5066 | msm_host->mmc->sdr104_wa = msm_host->pdata->sdr104_wa; |
| 5067 | |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 5068 | /* Initialize ICE if present */ |
| 5069 | if (msm_host->ice.pdev) { |
| 5070 | ret = sdhci_msm_ice_init(host); |
| 5071 | if (ret) { |
| 5072 | dev_err(&pdev->dev, "%s: SDHCi ICE init failed (%d)\n", |
| 5073 | mmc_hostname(host->mmc), ret); |
| 5074 | ret = -EINVAL; |
| 5075 | goto vreg_deinit; |
| 5076 | } |
| 5077 | host->is_crypto_en = true; |
Veerabhadrarao Badiganti | fe3088f | 2018-05-22 11:48:01 +0530 | [diff] [blame] | 5078 | msm_host->mmc->inlinecrypt_support = true; |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 5079 | /* Packed commands cannot be encrypted/decrypted using ICE */ |
| 5080 | msm_host->mmc->caps2 &= ~(MMC_CAP2_PACKED_WR | |
| 5081 | MMC_CAP2_PACKED_WR_CONTROL); |
| 5082 | } |
| 5083 | |
Sahitya Tummala | 1f52eaa | 2013-03-20 19:24:01 +0530 | [diff] [blame] | 5084 | init_completion(&msm_host->pwr_irq_completion); |
| 5085 | |
Sahitya Tummala | 581df13 | 2013-03-12 14:57:46 +0530 | [diff] [blame] | 5086 | if (gpio_is_valid(msm_host->pdata->status_gpio)) { |
Sahitya Tummala | 6ddabb4 | 2014-06-05 13:26:55 +0530 | [diff] [blame] | 5087 | /* |
| 5088 | * Set up the card detect GPIO in active configuration before |
| 5089 | * configuring it as an IRQ. Otherwise, it can be in some |
| 5090 | * weird/inconsistent state resulting in flood of interrupts. |
| 5091 | */ |
| 5092 | sdhci_msm_setup_pins(msm_host->pdata, true); |
| 5093 | |
Sahitya Tummala | a3888f4 | 2015-02-05 14:05:27 +0530 | [diff] [blame] | 5094 | /* |
| 5095 | * This delay is needed for stabilizing the card detect GPIO |
| 5096 | * line after changing the pull configs. |
| 5097 | */ |
| 5098 | usleep_range(10000, 10500); |
Sahitya Tummala | 581df13 | 2013-03-12 14:57:46 +0530 | [diff] [blame] | 5099 | ret = mmc_gpio_request_cd(msm_host->mmc, |
| 5100 | msm_host->pdata->status_gpio, 0); |
| 5101 | if (ret) { |
| 5102 | dev_err(&pdev->dev, "%s: Failed to request card detection IRQ %d\n", |
| 5103 | __func__, ret); |
Sahitya Tummala | 79edc6a | 2013-05-23 15:59:22 +0530 | [diff] [blame] | 5104 | goto vreg_deinit; |
Sahitya Tummala | 581df13 | 2013-03-12 14:57:46 +0530 | [diff] [blame] | 5105 | } |
| 5106 | } |
| 5107 | |
Krishna Konda | 7feab35 | 2013-09-17 23:55:40 -0700 | [diff] [blame] | 5108 | if ((sdhci_readl(host, SDHCI_CAPABILITIES) & SDHCI_CAN_64BIT) && |
| 5109 | (dma_supported(mmc_dev(host->mmc), DMA_BIT_MASK(64)))) { |
| 5110 | host->dma_mask = DMA_BIT_MASK(64); |
| 5111 | mmc_dev(host->mmc)->dma_mask = &host->dma_mask; |
Pavan Anamula | eeb3b14 | 2015-07-22 18:17:32 +0530 | [diff] [blame] | 5112 | mmc_dev(host->mmc)->coherent_dma_mask = host->dma_mask; |
Krishna Konda | 7feab35 | 2013-09-17 23:55:40 -0700 | [diff] [blame] | 5113 | } else if (dma_supported(mmc_dev(host->mmc), DMA_BIT_MASK(32))) { |
Sahitya Tummala | eaa2186 | 2013-03-20 19:34:59 +0530 | [diff] [blame] | 5114 | host->dma_mask = DMA_BIT_MASK(32); |
| 5115 | mmc_dev(host->mmc)->dma_mask = &host->dma_mask; |
Pavan Anamula | eeb3b14 | 2015-07-22 18:17:32 +0530 | [diff] [blame] | 5116 | mmc_dev(host->mmc)->coherent_dma_mask = host->dma_mask; |
Sahitya Tummala | eaa2186 | 2013-03-20 19:34:59 +0530 | [diff] [blame] | 5117 | } else { |
| 5118 | dev_err(&pdev->dev, "%s: Failed to set dma mask\n", __func__); |
| 5119 | } |
| 5120 | |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5121 | msm_host->pdata->sdiowakeup_irq = platform_get_irq_byname(pdev, |
| 5122 | "sdiowakeup_irq"); |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5123 | if (sdhci_is_valid_gpio_wakeup_int(msm_host)) { |
Ritesh Harjani | b5c8e17 | 2015-12-17 19:59:04 +0530 | [diff] [blame] | 5124 | dev_info(&pdev->dev, "%s: sdiowakeup_irq = %d\n", __func__, |
| 5125 | msm_host->pdata->sdiowakeup_irq); |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5126 | msm_host->is_sdiowakeup_enabled = true; |
| 5127 | ret = request_irq(msm_host->pdata->sdiowakeup_irq, |
| 5128 | sdhci_msm_sdiowakeup_irq, |
| 5129 | IRQF_SHARED | IRQF_TRIGGER_HIGH, |
| 5130 | "sdhci-msm sdiowakeup", host); |
| 5131 | if (ret) { |
| 5132 | dev_err(&pdev->dev, "%s: request sdiowakeup IRQ %d: failed: %d\n", |
| 5133 | __func__, msm_host->pdata->sdiowakeup_irq, ret); |
| 5134 | msm_host->pdata->sdiowakeup_irq = -1; |
| 5135 | msm_host->is_sdiowakeup_enabled = false; |
| 5136 | goto vreg_deinit; |
| 5137 | } else { |
| 5138 | spin_lock_irqsave(&host->lock, flags); |
| 5139 | sdhci_msm_cfg_sdiowakeup_gpio_irq(host, false); |
Sahitya Tummala | 7cd1e42 | 2016-01-12 16:40:50 +0530 | [diff] [blame] | 5140 | msm_host->sdio_pending_processing = false; |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5141 | spin_unlock_irqrestore(&host->lock, flags); |
| 5142 | } |
| 5143 | } |
| 5144 | |
Venkat Gopalakrishnan | d371f14 | 2015-05-29 17:49:46 -0700 | [diff] [blame] | 5145 | sdhci_msm_cmdq_init(host, pdev); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5146 | ret = sdhci_add_host(host); |
| 5147 | if (ret) { |
| 5148 | dev_err(&pdev->dev, "Add host failed (%d)\n", ret); |
Sahitya Tummala | 581df13 | 2013-03-12 14:57:46 +0530 | [diff] [blame] | 5149 | goto vreg_deinit; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5150 | } |
| 5151 | |
Veerabhadrarao Badiganti | eed1dea | 2017-06-21 19:27:32 +0530 | [diff] [blame] | 5152 | msm_host->pltfm_init_done = true; |
| 5153 | |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5154 | pm_runtime_set_active(&pdev->dev); |
| 5155 | pm_runtime_enable(&pdev->dev); |
| 5156 | pm_runtime_set_autosuspend_delay(&pdev->dev, MSM_AUTOSUSPEND_DELAY_MS); |
| 5157 | pm_runtime_use_autosuspend(&pdev->dev); |
| 5158 | |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 5159 | msm_host->msm_bus_vote.max_bus_bw.show = show_sdhci_max_bus_bw; |
| 5160 | msm_host->msm_bus_vote.max_bus_bw.store = store_sdhci_max_bus_bw; |
| 5161 | sysfs_attr_init(&msm_host->msm_bus_vote.max_bus_bw.attr); |
| 5162 | msm_host->msm_bus_vote.max_bus_bw.attr.name = "max_bus_bw"; |
| 5163 | msm_host->msm_bus_vote.max_bus_bw.attr.mode = S_IRUGO | S_IWUSR; |
| 5164 | ret = device_create_file(&pdev->dev, |
| 5165 | &msm_host->msm_bus_vote.max_bus_bw); |
| 5166 | if (ret) |
| 5167 | goto remove_host; |
| 5168 | |
Sahitya Tummala | 5c55b93 | 2013-06-20 14:00:18 +0530 | [diff] [blame] | 5169 | if (!gpio_is_valid(msm_host->pdata->status_gpio)) { |
| 5170 | msm_host->polling.show = show_polling; |
| 5171 | msm_host->polling.store = store_polling; |
| 5172 | sysfs_attr_init(&msm_host->polling.attr); |
| 5173 | msm_host->polling.attr.name = "polling"; |
| 5174 | msm_host->polling.attr.mode = S_IRUGO | S_IWUSR; |
| 5175 | ret = device_create_file(&pdev->dev, &msm_host->polling); |
| 5176 | if (ret) |
| 5177 | goto remove_max_bus_bw_file; |
| 5178 | } |
Asutosh Das | e5e9ca6 | 2013-07-30 19:08:36 +0530 | [diff] [blame] | 5179 | |
| 5180 | msm_host->auto_cmd21_attr.show = show_auto_cmd21; |
| 5181 | msm_host->auto_cmd21_attr.store = store_auto_cmd21; |
| 5182 | sysfs_attr_init(&msm_host->auto_cmd21_attr.attr); |
| 5183 | msm_host->auto_cmd21_attr.attr.name = "enable_auto_cmd21"; |
| 5184 | msm_host->auto_cmd21_attr.attr.mode = S_IRUGO | S_IWUSR; |
| 5185 | ret = device_create_file(&pdev->dev, &msm_host->auto_cmd21_attr); |
| 5186 | if (ret) { |
| 5187 | pr_err("%s: %s: failed creating auto-cmd21 attr: %d\n", |
| 5188 | mmc_hostname(host->mmc), __func__, ret); |
| 5189 | device_remove_file(&pdev->dev, &msm_host->auto_cmd21_attr); |
| 5190 | } |
Ankit Jain | 1d7e518 | 2017-09-20 11:55:38 +0530 | [diff] [blame] | 5191 | if (sdhci_msm_is_bootdevice(&pdev->dev)) |
| 5192 | mmc_flush_detect_work(host->mmc); |
| 5193 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5194 | /* Successful initialization */ |
| 5195 | goto out; |
| 5196 | |
Sahitya Tummala | 5c55b93 | 2013-06-20 14:00:18 +0530 | [diff] [blame] | 5197 | remove_max_bus_bw_file: |
| 5198 | device_remove_file(&pdev->dev, &msm_host->msm_bus_vote.max_bus_bw); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5199 | remove_host: |
| 5200 | dead = (readl_relaxed(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff); |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5201 | pm_runtime_disable(&pdev->dev); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5202 | sdhci_remove_host(host, dead); |
| 5203 | vreg_deinit: |
| 5204 | sdhci_msm_vreg_init(&pdev->dev, msm_host->pdata, false); |
Sahitya Tummala | 79edc6a | 2013-05-23 15:59:22 +0530 | [diff] [blame] | 5205 | bus_unregister: |
| 5206 | if (msm_host->msm_bus_vote.client_handle) |
| 5207 | sdhci_msm_bus_cancel_work_and_set_vote(host, 0); |
| 5208 | sdhci_msm_bus_unregister(msm_host); |
Venkat Gopalakrishnan | 7f69157 | 2013-06-23 17:36:46 -0700 | [diff] [blame] | 5209 | sleep_clk_disable: |
| 5210 | if (!IS_ERR(msm_host->sleep_clk)) |
| 5211 | clk_disable_unprepare(msm_host->sleep_clk); |
| 5212 | ff_clk_disable: |
| 5213 | if (!IS_ERR(msm_host->ff_clk)) |
| 5214 | clk_disable_unprepare(msm_host->ff_clk); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5215 | clk_disable: |
| 5216 | if (!IS_ERR(msm_host->clk)) |
| 5217 | clk_disable_unprepare(msm_host->clk); |
Vijay Viswanath | 674aeda | 2017-10-07 14:28:15 +0530 | [diff] [blame] | 5218 | bus_aggr_clk_disable: |
| 5219 | if (!IS_ERR(msm_host->bus_aggr_clk)) |
| 5220 | clk_disable_unprepare(msm_host->bus_aggr_clk); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5221 | pclk_disable: |
| 5222 | if (!IS_ERR(msm_host->pclk)) |
| 5223 | clk_disable_unprepare(msm_host->pclk); |
| 5224 | bus_clk_disable: |
| 5225 | if (!IS_ERR_OR_NULL(msm_host->bus_clk)) |
| 5226 | clk_disable_unprepare(msm_host->bus_clk); |
| 5227 | pltfm_free: |
| 5228 | sdhci_pltfm_free(pdev); |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 5229 | out_host_free: |
| 5230 | devm_kfree(&pdev->dev, msm_host); |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5231 | out: |
| 5232 | pr_debug("%s: Exit %s\n", dev_name(&pdev->dev), __func__); |
| 5233 | return ret; |
| 5234 | } |
| 5235 | |
| 5236 | static int sdhci_msm_remove(struct platform_device *pdev) |
| 5237 | { |
| 5238 | struct sdhci_host *host = platform_get_drvdata(pdev); |
| 5239 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 5240 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 5241 | struct sdhci_msm_pltfm_data *pdata = msm_host->pdata; |
Vijay Viswanath | 44c37b7 | 2018-07-04 14:02:52 +0530 | [diff] [blame] | 5242 | int nr_groups = msm_host->pdata->pm_qos_data.cpu_group_map.nr_groups; |
| 5243 | int i; |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5244 | int dead = (readl_relaxed(host->ioaddr + SDHCI_INT_STATUS) == |
| 5245 | 0xffffffff); |
| 5246 | |
Vijay Viswanath | 44c37b7 | 2018-07-04 14:02:52 +0530 | [diff] [blame] | 5247 | pr_debug("%s: %s Enter\n", dev_name(&pdev->dev), __func__); |
Sahitya Tummala | 5c55b93 | 2013-06-20 14:00:18 +0530 | [diff] [blame] | 5248 | if (!gpio_is_valid(msm_host->pdata->status_gpio)) |
| 5249 | device_remove_file(&pdev->dev, &msm_host->polling); |
Vijay Viswanath | 44c37b7 | 2018-07-04 14:02:52 +0530 | [diff] [blame] | 5250 | |
| 5251 | device_remove_file(&pdev->dev, &msm_host->auto_cmd21_attr); |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 5252 | device_remove_file(&pdev->dev, &msm_host->msm_bus_vote.max_bus_bw); |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5253 | pm_runtime_disable(&pdev->dev); |
Vijay Viswanath | 1971d22 | 2018-03-01 12:01:47 +0530 | [diff] [blame] | 5254 | |
Vijay Viswanath | 44c37b7 | 2018-07-04 14:02:52 +0530 | [diff] [blame] | 5255 | if (msm_host->pm_qos_group_enable) { |
| 5256 | struct sdhci_msm_pm_qos_group *group; |
| 5257 | |
| 5258 | for (i = 0; i < nr_groups; i++) |
| 5259 | cancel_delayed_work_sync( |
| 5260 | &msm_host->pm_qos[i].unvote_work); |
| 5261 | |
| 5262 | device_remove_file(&msm_host->pdev->dev, |
| 5263 | &msm_host->pm_qos_group_enable_attr); |
| 5264 | device_remove_file(&msm_host->pdev->dev, |
| 5265 | &msm_host->pm_qos_group_status_attr); |
| 5266 | |
| 5267 | for (i = 0; i < nr_groups; i++) { |
| 5268 | group = &msm_host->pm_qos[i]; |
| 5269 | pm_qos_remove_request(&group->req); |
| 5270 | } |
| 5271 | } |
| 5272 | |
| 5273 | if (msm_host->pm_qos_irq.enabled) { |
| 5274 | cancel_delayed_work_sync(&msm_host->pm_qos_irq.unvote_work); |
| 5275 | device_remove_file(&pdev->dev, |
| 5276 | &msm_host->pm_qos_irq.enable_attr); |
| 5277 | device_remove_file(&pdev->dev, |
| 5278 | &msm_host->pm_qos_irq.status_attr); |
| 5279 | pm_qos_remove_request(&msm_host->pm_qos_irq.req); |
| 5280 | } |
| 5281 | |
Vijay Viswanath | 1971d22 | 2018-03-01 12:01:47 +0530 | [diff] [blame] | 5282 | if (msm_host->pm_qos_wq) |
| 5283 | destroy_workqueue(msm_host->pm_qos_wq); |
Vijay Viswanath | 44c37b7 | 2018-07-04 14:02:52 +0530 | [diff] [blame] | 5284 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5285 | sdhci_remove_host(host, dead); |
Sahitya Tummala | 581df13 | 2013-03-12 14:57:46 +0530 | [diff] [blame] | 5286 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5287 | sdhci_msm_vreg_init(&pdev->dev, msm_host->pdata, false); |
Sahitya Tummala | a7f3c57 | 2013-01-11 11:30:45 +0530 | [diff] [blame] | 5288 | |
Pratibhasagar V | 9acf264 | 2013-11-21 21:07:21 +0530 | [diff] [blame] | 5289 | sdhci_msm_setup_pins(pdata, true); |
| 5290 | sdhci_msm_setup_pins(pdata, false); |
Sahitya Tummala | 8a3e818 | 2013-03-10 14:12:52 +0530 | [diff] [blame] | 5291 | |
| 5292 | if (msm_host->msm_bus_vote.client_handle) { |
| 5293 | sdhci_msm_bus_cancel_work_and_set_vote(host, 0); |
| 5294 | sdhci_msm_bus_unregister(msm_host); |
| 5295 | } |
Vijay Viswanath | 44c37b7 | 2018-07-04 14:02:52 +0530 | [diff] [blame] | 5296 | |
| 5297 | sdhci_pltfm_free(pdev); |
| 5298 | |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5299 | return 0; |
| 5300 | } |
| 5301 | |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5302 | #ifdef CONFIG_PM |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5303 | static int sdhci_msm_cfg_sdio_wakeup(struct sdhci_host *host, bool enable) |
| 5304 | { |
| 5305 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 5306 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 5307 | unsigned long flags; |
| 5308 | int ret = 0; |
| 5309 | |
| 5310 | if (!(host->mmc->card && mmc_card_sdio(host->mmc->card) && |
| 5311 | sdhci_is_valid_gpio_wakeup_int(msm_host) && |
| 5312 | mmc_card_wake_sdio_irq(host->mmc))) { |
Sahitya Tummala | 7cd1e42 | 2016-01-12 16:40:50 +0530 | [diff] [blame] | 5313 | msm_host->sdio_pending_processing = false; |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5314 | return 1; |
| 5315 | } |
| 5316 | |
| 5317 | spin_lock_irqsave(&host->lock, flags); |
| 5318 | if (enable) { |
| 5319 | /* configure DAT1 gpio if applicable */ |
| 5320 | if (sdhci_is_valid_gpio_wakeup_int(msm_host)) { |
Ritesh Harjani | b5c8e17 | 2015-12-17 19:59:04 +0530 | [diff] [blame] | 5321 | msm_host->sdio_pending_processing = false; |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5322 | ret = enable_irq_wake(msm_host->pdata->sdiowakeup_irq); |
| 5323 | if (!ret) |
| 5324 | sdhci_msm_cfg_sdiowakeup_gpio_irq(host, true); |
| 5325 | goto out; |
| 5326 | } else { |
| 5327 | pr_err("%s: sdiowakeup_irq(%d) invalid\n", |
| 5328 | mmc_hostname(host->mmc), enable); |
| 5329 | } |
| 5330 | } else { |
| 5331 | if (sdhci_is_valid_gpio_wakeup_int(msm_host)) { |
| 5332 | ret = disable_irq_wake(msm_host->pdata->sdiowakeup_irq); |
| 5333 | sdhci_msm_cfg_sdiowakeup_gpio_irq(host, false); |
Ritesh Harjani | b5c8e17 | 2015-12-17 19:59:04 +0530 | [diff] [blame] | 5334 | msm_host->sdio_pending_processing = false; |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5335 | } else { |
| 5336 | pr_err("%s: sdiowakeup_irq(%d)invalid\n", |
| 5337 | mmc_hostname(host->mmc), enable); |
| 5338 | |
| 5339 | } |
| 5340 | } |
| 5341 | out: |
| 5342 | if (ret) |
| 5343 | pr_err("%s: %s: %sable wakeup: failed: %d gpio: %d\n", |
| 5344 | mmc_hostname(host->mmc), __func__, enable ? "en" : "dis", |
| 5345 | ret, msm_host->pdata->sdiowakeup_irq); |
| 5346 | spin_unlock_irqrestore(&host->lock, flags); |
| 5347 | return ret; |
| 5348 | } |
| 5349 | |
| 5350 | |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5351 | static int sdhci_msm_runtime_suspend(struct device *dev) |
| 5352 | { |
| 5353 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 5354 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 5355 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Konstantin Dorfman | ddab0cc | 2015-02-25 16:23:50 +0200 | [diff] [blame] | 5356 | ktime_t start = ktime_get(); |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 5357 | int ret; |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5358 | |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5359 | if (host->mmc->card && mmc_card_sdio(host->mmc->card)) |
| 5360 | goto defer_disable_host_irq; |
Pavan Anamula | 45ef137 | 2015-10-29 23:22:12 +0530 | [diff] [blame] | 5361 | |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5362 | sdhci_cfg_irq(host, false, true); |
| 5363 | |
| 5364 | defer_disable_host_irq: |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5365 | disable_irq(msm_host->pwr_irq); |
| 5366 | |
| 5367 | /* |
| 5368 | * Remove the vote immediately only if clocks are off in which |
| 5369 | * case we might have queued work to remove vote but it may not |
| 5370 | * be completed before runtime suspend or system suspend. |
| 5371 | */ |
| 5372 | if (!atomic_read(&msm_host->clks_on)) { |
| 5373 | if (msm_host->msm_bus_vote.client_handle) |
| 5374 | sdhci_msm_bus_cancel_work_and_set_vote(host, 0); |
| 5375 | } |
| 5376 | |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 5377 | if (host->is_crypto_en) { |
| 5378 | ret = sdhci_msm_ice_suspend(host); |
| 5379 | if (ret < 0) |
| 5380 | pr_err("%s: failed to suspend crypto engine %d\n", |
| 5381 | mmc_hostname(host->mmc), ret); |
| 5382 | } |
Konstantin Dorfman | 98edaa1 | 2015-06-11 10:05:18 +0300 | [diff] [blame] | 5383 | trace_sdhci_msm_runtime_suspend(mmc_hostname(host->mmc), 0, |
| 5384 | ktime_to_us(ktime_sub(ktime_get(), start))); |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5385 | return 0; |
| 5386 | } |
| 5387 | |
| 5388 | static int sdhci_msm_runtime_resume(struct device *dev) |
| 5389 | { |
| 5390 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 5391 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 5392 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Konstantin Dorfman | ddab0cc | 2015-02-25 16:23:50 +0200 | [diff] [blame] | 5393 | ktime_t start = ktime_get(); |
Sahitya Tummala | 9325fb0 | 2015-05-08 11:53:29 +0530 | [diff] [blame] | 5394 | int ret; |
| 5395 | |
| 5396 | if (host->is_crypto_en) { |
| 5397 | ret = sdhci_msm_enable_controller_clock(host); |
| 5398 | if (ret) { |
| 5399 | pr_err("%s: Failed to enable reqd clocks\n", |
| 5400 | mmc_hostname(host->mmc)); |
| 5401 | goto skip_ice_resume; |
| 5402 | } |
| 5403 | ret = sdhci_msm_ice_resume(host); |
| 5404 | if (ret) |
| 5405 | pr_err("%s: failed to resume crypto engine %d\n", |
| 5406 | mmc_hostname(host->mmc), ret); |
| 5407 | } |
| 5408 | skip_ice_resume: |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5409 | |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5410 | if (host->mmc->card && mmc_card_sdio(host->mmc->card)) |
| 5411 | goto defer_enable_host_irq; |
Pavan Anamula | 45ef137 | 2015-10-29 23:22:12 +0530 | [diff] [blame] | 5412 | |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5413 | sdhci_cfg_irq(host, true, true); |
| 5414 | |
| 5415 | defer_enable_host_irq: |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5416 | enable_irq(msm_host->pwr_irq); |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5417 | |
Konstantin Dorfman | ddab0cc | 2015-02-25 16:23:50 +0200 | [diff] [blame] | 5418 | trace_sdhci_msm_runtime_resume(mmc_hostname(host->mmc), 0, |
| 5419 | ktime_to_us(ktime_sub(ktime_get(), start))); |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5420 | return 0; |
| 5421 | } |
| 5422 | |
| 5423 | static int sdhci_msm_suspend(struct device *dev) |
| 5424 | { |
| 5425 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 5426 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 5427 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
Konstantin Dorfman | ddab0cc | 2015-02-25 16:23:50 +0200 | [diff] [blame] | 5428 | int ret = 0; |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5429 | int sdio_cfg = 0; |
Konstantin Dorfman | ddab0cc | 2015-02-25 16:23:50 +0200 | [diff] [blame] | 5430 | ktime_t start = ktime_get(); |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5431 | |
| 5432 | if (gpio_is_valid(msm_host->pdata->status_gpio) && |
| 5433 | (msm_host->mmc->slot.cd_irq >= 0)) |
| 5434 | disable_irq(msm_host->mmc->slot.cd_irq); |
| 5435 | |
| 5436 | if (pm_runtime_suspended(dev)) { |
| 5437 | pr_debug("%s: %s: already runtime suspended\n", |
| 5438 | mmc_hostname(host->mmc), __func__); |
| 5439 | goto out; |
| 5440 | } |
Konstantin Dorfman | ddab0cc | 2015-02-25 16:23:50 +0200 | [diff] [blame] | 5441 | ret = sdhci_msm_runtime_suspend(dev); |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5442 | out: |
Sayali Lokhande | b3029516 | 2016-11-18 16:05:50 +0530 | [diff] [blame] | 5443 | sdhci_msm_disable_controller_clock(host); |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5444 | if (host->mmc->card && mmc_card_sdio(host->mmc->card)) { |
| 5445 | sdio_cfg = sdhci_msm_cfg_sdio_wakeup(host, true); |
| 5446 | if (sdio_cfg) |
| 5447 | sdhci_cfg_irq(host, false, true); |
| 5448 | } |
| 5449 | |
Konstantin Dorfman | ddab0cc | 2015-02-25 16:23:50 +0200 | [diff] [blame] | 5450 | trace_sdhci_msm_suspend(mmc_hostname(host->mmc), ret, |
| 5451 | ktime_to_us(ktime_sub(ktime_get(), start))); |
| 5452 | return ret; |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5453 | } |
| 5454 | |
| 5455 | static int sdhci_msm_resume(struct device *dev) |
| 5456 | { |
| 5457 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 5458 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 5459 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 5460 | int ret = 0; |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5461 | int sdio_cfg = 0; |
Konstantin Dorfman | ddab0cc | 2015-02-25 16:23:50 +0200 | [diff] [blame] | 5462 | ktime_t start = ktime_get(); |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5463 | |
| 5464 | if (gpio_is_valid(msm_host->pdata->status_gpio) && |
| 5465 | (msm_host->mmc->slot.cd_irq >= 0)) |
| 5466 | enable_irq(msm_host->mmc->slot.cd_irq); |
| 5467 | |
| 5468 | if (pm_runtime_suspended(dev)) { |
| 5469 | pr_debug("%s: %s: runtime suspended, defer system resume\n", |
| 5470 | mmc_hostname(host->mmc), __func__); |
| 5471 | goto out; |
| 5472 | } |
| 5473 | |
Konstantin Dorfman | ddab0cc | 2015-02-25 16:23:50 +0200 | [diff] [blame] | 5474 | ret = sdhci_msm_runtime_resume(dev); |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5475 | out: |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5476 | if (host->mmc->card && mmc_card_sdio(host->mmc->card)) { |
| 5477 | sdio_cfg = sdhci_msm_cfg_sdio_wakeup(host, false); |
| 5478 | if (sdio_cfg) |
| 5479 | sdhci_cfg_irq(host, true, true); |
| 5480 | } |
| 5481 | |
Konstantin Dorfman | ddab0cc | 2015-02-25 16:23:50 +0200 | [diff] [blame] | 5482 | trace_sdhci_msm_resume(mmc_hostname(host->mmc), ret, |
| 5483 | ktime_to_us(ktime_sub(ktime_get(), start))); |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5484 | return ret; |
| 5485 | } |
| 5486 | |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5487 | static int sdhci_msm_suspend_noirq(struct device *dev) |
| 5488 | { |
| 5489 | struct sdhci_host *host = dev_get_drvdata(dev); |
| 5490 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
| 5491 | struct sdhci_msm_host *msm_host = pltfm_host->priv; |
| 5492 | int ret = 0; |
| 5493 | |
| 5494 | /* |
| 5495 | * ksdioirqd may be running, hence retry |
| 5496 | * suspend in case the clocks are ON |
| 5497 | */ |
| 5498 | if (atomic_read(&msm_host->clks_on)) { |
| 5499 | pr_warn("%s: %s: clock ON after suspend, aborting suspend\n", |
| 5500 | mmc_hostname(host->mmc), __func__); |
| 5501 | ret = -EAGAIN; |
| 5502 | } |
| 5503 | |
Ritesh Harjani | b5c8e17 | 2015-12-17 19:59:04 +0530 | [diff] [blame] | 5504 | if (host->mmc->card && mmc_card_sdio(host->mmc->card)) |
| 5505 | if (msm_host->sdio_pending_processing) |
| 5506 | ret = -EBUSY; |
| 5507 | |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5508 | return ret; |
| 5509 | } |
| 5510 | |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5511 | static const struct dev_pm_ops sdhci_msm_pmops = { |
Vijay Viswanath | d8936f8 | 2017-07-20 15:50:19 +0530 | [diff] [blame] | 5512 | SET_LATE_SYSTEM_SLEEP_PM_OPS(sdhci_msm_suspend, sdhci_msm_resume) |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5513 | SET_RUNTIME_PM_OPS(sdhci_msm_runtime_suspend, sdhci_msm_runtime_resume, |
| 5514 | NULL) |
Ritesh Harjani | 42876f4 | 2015-11-17 17:46:51 +0530 | [diff] [blame] | 5515 | .suspend_noirq = sdhci_msm_suspend_noirq, |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5516 | }; |
| 5517 | |
| 5518 | #define SDHCI_MSM_PMOPS (&sdhci_msm_pmops) |
| 5519 | |
| 5520 | #else |
| 5521 | #define SDHCI_MSM_PMOPS NULL |
| 5522 | #endif |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5523 | static const struct of_device_id sdhci_msm_dt_match[] = { |
| 5524 | {.compatible = "qcom,sdhci-msm"}, |
Sayali Lokhande | f0ee1ff | 2016-08-25 20:46:01 +0530 | [diff] [blame] | 5525 | {.compatible = "qcom,sdhci-msm-v5"}, |
Venkat Gopalakrishnan | 272ba40 | 2015-06-25 12:00:02 -0700 | [diff] [blame] | 5526 | {}, |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5527 | }; |
| 5528 | MODULE_DEVICE_TABLE(of, sdhci_msm_dt_match); |
| 5529 | |
| 5530 | static struct platform_driver sdhci_msm_driver = { |
| 5531 | .probe = sdhci_msm_probe, |
| 5532 | .remove = sdhci_msm_remove, |
| 5533 | .driver = { |
| 5534 | .name = "sdhci_msm", |
| 5535 | .owner = THIS_MODULE, |
Lingutla Chandrasekhar | e73832d | 2016-09-07 15:59:56 +0530 | [diff] [blame] | 5536 | .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5537 | .of_match_table = sdhci_msm_dt_match, |
Konstantin Dorfman | 98377d3 | 2015-02-25 10:09:41 +0200 | [diff] [blame] | 5538 | .pm = SDHCI_MSM_PMOPS, |
Asutosh Das | 0ef2481 | 2012-12-18 16:14:02 +0530 | [diff] [blame] | 5539 | }, |
| 5540 | }; |
| 5541 | |
| 5542 | module_platform_driver(sdhci_msm_driver); |
| 5543 | |
| 5544 | MODULE_DESCRIPTION("Qualcomm Technologies, Inc. Secure Digital Host Controller Interface driver"); |
| 5545 | MODULE_LICENSE("GPL v2"); |