Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1 | /* |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 2 | * Copyright (c) 2012-2017, The Linux Foundation. All rights reserved. |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 and |
| 6 | * only version 2 as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | */ |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 13 | #include <linux/bitmap.h> |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 14 | #include <linux/delay.h> |
| 15 | #include <linux/err.h> |
| 16 | #include <linux/interrupt.h> |
| 17 | #include <linux/io.h> |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 18 | #include <linux/irqchip/chained_irq.h> |
| 19 | #include <linux/irqdomain.h> |
| 20 | #include <linux/irq.h> |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 21 | #include <linux/kernel.h> |
| 22 | #include <linux/module.h> |
| 23 | #include <linux/of.h> |
| 24 | #include <linux/platform_device.h> |
| 25 | #include <linux/slab.h> |
| 26 | #include <linux/spmi.h> |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame] | 27 | #include <linux/syscore_ops.h> |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 28 | |
| 29 | /* PMIC Arbiter configuration registers */ |
| 30 | #define PMIC_ARB_VERSION 0x0000 |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 31 | #define PMIC_ARB_VERSION_V2_MIN 0x20010000 |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 32 | #define PMIC_ARB_VERSION_V3_MIN 0x30000000 |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 33 | #define PMIC_ARB_VERSION_V5_MIN 0x50000000 |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 34 | #define PMIC_ARB_INT_EN 0x0004 |
| 35 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 36 | /* PMIC Arbiter channel registers offsets */ |
| 37 | #define PMIC_ARB_CMD 0x00 |
| 38 | #define PMIC_ARB_CONFIG 0x04 |
| 39 | #define PMIC_ARB_STATUS 0x08 |
| 40 | #define PMIC_ARB_WDATA0 0x10 |
| 41 | #define PMIC_ARB_WDATA1 0x14 |
| 42 | #define PMIC_ARB_RDATA0 0x18 |
| 43 | #define PMIC_ARB_RDATA1 0x1C |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 44 | |
| 45 | /* Mapping Table */ |
| 46 | #define SPMI_MAPPING_TABLE_REG(N) (0x0B00 + (4 * (N))) |
| 47 | #define SPMI_MAPPING_BIT_INDEX(X) (((X) >> 18) & 0xF) |
| 48 | #define SPMI_MAPPING_BIT_IS_0_FLAG(X) (((X) >> 17) & 0x1) |
| 49 | #define SPMI_MAPPING_BIT_IS_0_RESULT(X) (((X) >> 9) & 0xFF) |
| 50 | #define SPMI_MAPPING_BIT_IS_1_FLAG(X) (((X) >> 8) & 0x1) |
| 51 | #define SPMI_MAPPING_BIT_IS_1_RESULT(X) (((X) >> 0) & 0xFF) |
| 52 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 53 | #define SPMI_MAPPING_TABLE_TREE_DEPTH 16 /* Maximum of 16-bits */ |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 54 | #define PMIC_ARB_MAX_PPID BIT(12) /* PPID is 12bit */ |
| 55 | #define PMIC_ARB_CHAN_VALID BIT(15) |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 56 | #define PMIC_ARB_CHAN_IS_IRQ_OWNER(reg) ((reg) & BIT(24)) |
| 57 | #define INVALID_EE (-1) |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 58 | |
| 59 | /* Ownership Table */ |
| 60 | #define SPMI_OWNERSHIP_TABLE_REG(N) (0x0700 + (4 * (N))) |
| 61 | #define SPMI_OWNERSHIP_PERIPH2OWNER(X) ((X) & 0x7) |
| 62 | |
| 63 | /* Channel Status fields */ |
| 64 | enum pmic_arb_chnl_status { |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 65 | PMIC_ARB_STATUS_DONE = BIT(0), |
| 66 | PMIC_ARB_STATUS_FAILURE = BIT(1), |
| 67 | PMIC_ARB_STATUS_DENIED = BIT(2), |
| 68 | PMIC_ARB_STATUS_DROPPED = BIT(3), |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 69 | }; |
| 70 | |
| 71 | /* Command register fields */ |
| 72 | #define PMIC_ARB_CMD_MAX_BYTE_COUNT 8 |
| 73 | |
| 74 | /* Command Opcodes */ |
| 75 | enum pmic_arb_cmd_op_code { |
| 76 | PMIC_ARB_OP_EXT_WRITEL = 0, |
| 77 | PMIC_ARB_OP_EXT_READL = 1, |
| 78 | PMIC_ARB_OP_EXT_WRITE = 2, |
| 79 | PMIC_ARB_OP_RESET = 3, |
| 80 | PMIC_ARB_OP_SLEEP = 4, |
| 81 | PMIC_ARB_OP_SHUTDOWN = 5, |
| 82 | PMIC_ARB_OP_WAKEUP = 6, |
| 83 | PMIC_ARB_OP_AUTHENTICATE = 7, |
| 84 | PMIC_ARB_OP_MSTR_READ = 8, |
| 85 | PMIC_ARB_OP_MSTR_WRITE = 9, |
| 86 | PMIC_ARB_OP_EXT_READ = 13, |
| 87 | PMIC_ARB_OP_WRITE = 14, |
| 88 | PMIC_ARB_OP_READ = 15, |
| 89 | PMIC_ARB_OP_ZERO_WRITE = 16, |
| 90 | }; |
| 91 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 92 | /* |
| 93 | * PMIC arbiter version 5 uses different register offsets for read/write vs |
| 94 | * observer channels. |
| 95 | */ |
| 96 | enum pmic_arb_channel { |
| 97 | PMIC_ARB_CHANNEL_RW, |
| 98 | PMIC_ARB_CHANNEL_OBS, |
| 99 | }; |
| 100 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 101 | /* Maximum number of support PMIC peripherals */ |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 102 | #define PMIC_ARB_MAX_PERIPHS 512 |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 103 | #define PMIC_ARB_TIMEOUT_US 100 |
| 104 | #define PMIC_ARB_MAX_TRANS_BYTES (8) |
| 105 | |
| 106 | #define PMIC_ARB_APID_MASK 0xFF |
| 107 | #define PMIC_ARB_PPID_MASK 0xFFF |
| 108 | |
| 109 | /* interrupt enable bit */ |
| 110 | #define SPMI_PIC_ACC_ENABLE_BIT BIT(0) |
| 111 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 112 | #define HWIRQ(slave_id, periph_id, irq_id, apid) \ |
| 113 | ((((slave_id) & 0xF) << 28) | \ |
| 114 | (((periph_id) & 0xFF) << 20) | \ |
| 115 | (((irq_id) & 0x7) << 16) | \ |
| 116 | (((apid) & 0x1FF) << 0)) |
| 117 | |
| 118 | #define HWIRQ_SID(hwirq) (((hwirq) >> 28) & 0xF) |
| 119 | #define HWIRQ_PER(hwirq) (((hwirq) >> 20) & 0xFF) |
| 120 | #define HWIRQ_IRQ(hwirq) (((hwirq) >> 16) & 0x7) |
| 121 | #define HWIRQ_APID(hwirq) (((hwirq) >> 0) & 0x1FF) |
| 122 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 123 | struct pmic_arb_ver_ops; |
| 124 | |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 125 | struct apid_data { |
| 126 | u16 ppid; |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 127 | u8 write_owner; |
| 128 | u8 irq_owner; |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 129 | }; |
| 130 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 131 | /** |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 132 | * spmi_pmic_arb - SPMI PMIC Arbiter object |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 133 | * |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 134 | * @rd_base: on v1 "core", on v2 "observer" register base off DT. |
| 135 | * @wr_base: on v1 "core", on v2 "chnls" register base off DT. |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 136 | * @intr: address of the SPMI interrupt control registers. |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 137 | * @acc_status: address of SPMI ACC interrupt status registers. |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 138 | * @cnfg: address of the PMIC Arbiter configuration registers. |
| 139 | * @lock: lock to synchronize accesses. |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 140 | * @channel: execution environment channel to use for accesses. |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 141 | * @irq: PMIC ARB interrupt. |
| 142 | * @ee: the current Execution Environment |
| 143 | * @min_apid: minimum APID (used for bounding IRQ search) |
| 144 | * @max_apid: maximum APID |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 145 | * @max_periph: maximum number of PMIC peripherals supported by HW. |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 146 | * @mapping_table: in-memory copy of PPID -> APID mapping table. |
| 147 | * @domain: irq domain object for PMIC IRQ domain |
| 148 | * @spmic: SPMI controller object |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 149 | * @ver_ops: version dependent operations. |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 150 | * @ppid_to_apid in-memory copy of PPID -> channel (APID) mapping table. |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 151 | * v2 only. |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 152 | */ |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 153 | struct spmi_pmic_arb { |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 154 | void __iomem *rd_base; |
| 155 | void __iomem *wr_base; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 156 | void __iomem *intr; |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 157 | void __iomem *acc_status; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 158 | void __iomem *cnfg; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 159 | void __iomem *core; |
| 160 | resource_size_t core_size; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 161 | raw_spinlock_t lock; |
| 162 | u8 channel; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 163 | int irq; |
| 164 | u8 ee; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 165 | u16 min_apid; |
| 166 | u16 max_apid; |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 167 | u16 max_periph; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 168 | u32 *mapping_table; |
| 169 | DECLARE_BITMAP(mapping_table_valid, PMIC_ARB_MAX_PERIPHS); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 170 | struct irq_domain *domain; |
| 171 | struct spmi_controller *spmic; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 172 | const struct pmic_arb_ver_ops *ver_ops; |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 173 | u16 *ppid_to_apid; |
| 174 | u16 last_apid; |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 175 | struct apid_data apid_data[PMIC_ARB_MAX_PERIPHS]; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 176 | }; |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame] | 177 | static struct spmi_pmic_arb *the_pa; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 178 | |
| 179 | /** |
| 180 | * pmic_arb_ver: version dependent functionality. |
| 181 | * |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 182 | * @ver_str: version string. |
| 183 | * @ppid_to_apid: finds the apid for a given ppid. |
| 184 | * @mode: access rights to specified pmic peripheral. |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 185 | * @non_data_cmd: on v1 issues an spmi non-data command. |
| 186 | * on v2 no HW support, returns -EOPNOTSUPP. |
| 187 | * @offset: on v1 offset of per-ee channel. |
| 188 | * on v2 offset of per-ee and per-ppid channel. |
| 189 | * @fmt_cmd: formats a GENI/SPMI command. |
| 190 | * @owner_acc_status: on v1 offset of PMIC_ARB_SPMI_PIC_OWNERm_ACC_STATUSn |
| 191 | * on v2 offset of SPMI_PIC_OWNERm_ACC_STATUSn. |
| 192 | * @acc_enable: on v1 offset of PMIC_ARB_SPMI_PIC_ACC_ENABLEn |
| 193 | * on v2 offset of SPMI_PIC_ACC_ENABLEn. |
| 194 | * @irq_status: on v1 offset of PMIC_ARB_SPMI_PIC_IRQ_STATUSn |
| 195 | * on v2 offset of SPMI_PIC_IRQ_STATUSn. |
| 196 | * @irq_clear: on v1 offset of PMIC_ARB_SPMI_PIC_IRQ_CLEARn |
| 197 | * on v2 offset of SPMI_PIC_IRQ_CLEARn. |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 198 | * @channel_map_offset: offset of PMIC_ARB_REG_CHNLn |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 199 | */ |
| 200 | struct pmic_arb_ver_ops { |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 201 | const char *ver_str; |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 202 | int (*ppid_to_apid)(struct spmi_pmic_arb *pa, u8 sid, u16 addr, |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 203 | u16 *apid); |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 204 | int (*mode)(struct spmi_pmic_arb *dev, u8 sid, u16 addr, |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 205 | mode_t *mode); |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 206 | /* spmi commands (read_cmd, write_cmd, cmd) functionality */ |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 207 | int (*offset)(struct spmi_pmic_arb *dev, u8 sid, u16 addr, |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 208 | enum pmic_arb_channel ch_type, u32 *offset); |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 209 | u32 (*fmt_cmd)(u8 opc, u8 sid, u16 addr, u8 bc); |
| 210 | int (*non_data_cmd)(struct spmi_controller *ctrl, u8 opc, u8 sid); |
| 211 | /* Interrupts controller functionality (offset of PIC registers) */ |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 212 | u32 (*owner_acc_status)(u8 m, u16 n); |
| 213 | u32 (*acc_enable)(u16 n); |
| 214 | u32 (*irq_status)(u16 n); |
| 215 | u32 (*irq_clear)(u16 n); |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 216 | u32 (*channel_map_offset)(u16 n); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 217 | }; |
| 218 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 219 | static inline void pmic_arb_base_write(struct spmi_pmic_arb *pa, |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 220 | u32 offset, u32 val) |
| 221 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 222 | writel_relaxed(val, pa->wr_base + offset); |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 223 | } |
| 224 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 225 | static inline void pmic_arb_set_rd_cmd(struct spmi_pmic_arb *pa, |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 226 | u32 offset, u32 val) |
| 227 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 228 | writel_relaxed(val, pa->rd_base + offset); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 229 | } |
| 230 | |
| 231 | /** |
| 232 | * pa_read_data: reads pmic-arb's register and copy 1..4 bytes to buf |
| 233 | * @bc: byte count -1. range: 0..3 |
| 234 | * @reg: register's address |
| 235 | * @buf: output parameter, length must be bc + 1 |
| 236 | */ |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 237 | static void pa_read_data(struct spmi_pmic_arb *pa, u8 *buf, u32 reg, u8 bc) |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 238 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 239 | u32 data = __raw_readl(pa->rd_base + reg); |
| 240 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 241 | memcpy(buf, &data, (bc & 3) + 1); |
| 242 | } |
| 243 | |
| 244 | /** |
| 245 | * pa_write_data: write 1..4 bytes from buf to pmic-arb's register |
| 246 | * @bc: byte-count -1. range: 0..3. |
| 247 | * @reg: register's address. |
| 248 | * @buf: buffer to write. length must be bc + 1. |
| 249 | */ |
| 250 | static void |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 251 | pa_write_data(struct spmi_pmic_arb *pa, const u8 *buf, u32 reg, u8 bc) |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 252 | { |
| 253 | u32 data = 0; |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 254 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 255 | memcpy(&data, buf, (bc & 3) + 1); |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 256 | pmic_arb_base_write(pa, reg, data); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 257 | } |
| 258 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 259 | static int pmic_arb_wait_for_done(struct spmi_controller *ctrl, |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 260 | void __iomem *base, u8 sid, u16 addr, |
| 261 | enum pmic_arb_channel ch_type) |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 262 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 263 | struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 264 | u32 status = 0; |
| 265 | u32 timeout = PMIC_ARB_TIMEOUT_US; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 266 | u32 offset; |
| 267 | int rc; |
| 268 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 269 | rc = pa->ver_ops->offset(pa, sid, addr, ch_type, &offset); |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 270 | if (rc) |
| 271 | return rc; |
| 272 | |
| 273 | offset += PMIC_ARB_STATUS; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 274 | |
| 275 | while (timeout--) { |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 276 | status = readl_relaxed(base + offset); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 277 | |
| 278 | if (status & PMIC_ARB_STATUS_DONE) { |
| 279 | if (status & PMIC_ARB_STATUS_DENIED) { |
| 280 | dev_err(&ctrl->dev, |
| 281 | "%s: transaction denied (0x%x)\n", |
| 282 | __func__, status); |
| 283 | return -EPERM; |
| 284 | } |
| 285 | |
| 286 | if (status & PMIC_ARB_STATUS_FAILURE) { |
| 287 | dev_err(&ctrl->dev, |
| 288 | "%s: transaction failed (0x%x)\n", |
| 289 | __func__, status); |
| 290 | return -EIO; |
| 291 | } |
| 292 | |
| 293 | if (status & PMIC_ARB_STATUS_DROPPED) { |
| 294 | dev_err(&ctrl->dev, |
| 295 | "%s: transaction dropped (0x%x)\n", |
| 296 | __func__, status); |
| 297 | return -EIO; |
| 298 | } |
| 299 | |
| 300 | return 0; |
| 301 | } |
| 302 | udelay(1); |
| 303 | } |
| 304 | |
| 305 | dev_err(&ctrl->dev, |
| 306 | "%s: timeout, status 0x%x\n", |
| 307 | __func__, status); |
| 308 | return -ETIMEDOUT; |
| 309 | } |
| 310 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 311 | static int |
| 312 | pmic_arb_non_data_cmd_v1(struct spmi_controller *ctrl, u8 opc, u8 sid) |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 313 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 314 | struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 315 | unsigned long flags; |
| 316 | u32 cmd; |
| 317 | int rc; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 318 | u32 offset; |
| 319 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 320 | rc = pa->ver_ops->offset(pa, sid, 0, PMIC_ARB_CHANNEL_RW, &offset); |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 321 | if (rc) |
| 322 | return rc; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 323 | |
| 324 | cmd = ((opc | 0x40) << 27) | ((sid & 0xf) << 20); |
| 325 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 326 | raw_spin_lock_irqsave(&pa->lock, flags); |
| 327 | pmic_arb_base_write(pa, offset + PMIC_ARB_CMD, cmd); |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 328 | rc = pmic_arb_wait_for_done(ctrl, pa->wr_base, sid, 0, |
| 329 | PMIC_ARB_CHANNEL_RW); |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 330 | raw_spin_unlock_irqrestore(&pa->lock, flags); |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 331 | |
| 332 | return rc; |
| 333 | } |
| 334 | |
| 335 | static int |
| 336 | pmic_arb_non_data_cmd_v2(struct spmi_controller *ctrl, u8 opc, u8 sid) |
| 337 | { |
| 338 | return -EOPNOTSUPP; |
| 339 | } |
| 340 | |
| 341 | /* Non-data command */ |
| 342 | static int pmic_arb_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid) |
| 343 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 344 | struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl); |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 345 | |
| 346 | dev_dbg(&ctrl->dev, "cmd op:0x%x sid:%d\n", opc, sid); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 347 | |
| 348 | /* Check for valid non-data command */ |
| 349 | if (opc < SPMI_CMD_RESET || opc > SPMI_CMD_WAKEUP) |
| 350 | return -EINVAL; |
| 351 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 352 | return pa->ver_ops->non_data_cmd(ctrl, opc, sid); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 353 | } |
| 354 | |
| 355 | static int pmic_arb_read_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid, |
| 356 | u16 addr, u8 *buf, size_t len) |
| 357 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 358 | struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 359 | unsigned long flags; |
| 360 | u8 bc = len - 1; |
| 361 | u32 cmd; |
| 362 | int rc; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 363 | u32 offset; |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 364 | mode_t mode; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 365 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 366 | rc = pa->ver_ops->offset(pa, sid, addr, PMIC_ARB_CHANNEL_OBS, &offset); |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 367 | if (rc) |
| 368 | return rc; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 369 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 370 | rc = pa->ver_ops->mode(pa, sid, addr, &mode); |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 371 | if (rc) |
| 372 | return rc; |
| 373 | |
| 374 | if (!(mode & 0400)) { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 375 | dev_err(&pa->spmic->dev, |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 376 | "error: impermissible read from peripheral sid:%d addr:0x%x\n", |
| 377 | sid, addr); |
| 378 | return -ENODEV; |
| 379 | } |
| 380 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 381 | if (bc >= PMIC_ARB_MAX_TRANS_BYTES) { |
| 382 | dev_err(&ctrl->dev, |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 383 | "pmic-arb supports 1..%d bytes per trans, but:%zu requested", |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 384 | PMIC_ARB_MAX_TRANS_BYTES, len); |
| 385 | return -EINVAL; |
| 386 | } |
| 387 | |
| 388 | /* Check the opcode */ |
| 389 | if (opc >= 0x60 && opc <= 0x7F) |
| 390 | opc = PMIC_ARB_OP_READ; |
| 391 | else if (opc >= 0x20 && opc <= 0x2F) |
| 392 | opc = PMIC_ARB_OP_EXT_READ; |
| 393 | else if (opc >= 0x38 && opc <= 0x3F) |
| 394 | opc = PMIC_ARB_OP_EXT_READL; |
| 395 | else |
| 396 | return -EINVAL; |
| 397 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 398 | cmd = pa->ver_ops->fmt_cmd(opc, sid, addr, bc); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 399 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 400 | raw_spin_lock_irqsave(&pa->lock, flags); |
| 401 | pmic_arb_set_rd_cmd(pa, offset + PMIC_ARB_CMD, cmd); |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 402 | rc = pmic_arb_wait_for_done(ctrl, pa->rd_base, sid, addr, |
| 403 | PMIC_ARB_CHANNEL_OBS); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 404 | if (rc) |
| 405 | goto done; |
| 406 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 407 | pa_read_data(pa, buf, offset + PMIC_ARB_RDATA0, |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 408 | min_t(u8, bc, 3)); |
| 409 | |
| 410 | if (bc > 3) |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 411 | pa_read_data(pa, buf + 4, offset + PMIC_ARB_RDATA1, bc - 4); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 412 | |
| 413 | done: |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 414 | raw_spin_unlock_irqrestore(&pa->lock, flags); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 415 | return rc; |
| 416 | } |
| 417 | |
| 418 | static int pmic_arb_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid, |
| 419 | u16 addr, const u8 *buf, size_t len) |
| 420 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 421 | struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 422 | unsigned long flags; |
| 423 | u8 bc = len - 1; |
| 424 | u32 cmd; |
| 425 | int rc; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 426 | u32 offset; |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 427 | mode_t mode; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 428 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 429 | rc = pa->ver_ops->offset(pa, sid, addr, PMIC_ARB_CHANNEL_RW, &offset); |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 430 | if (rc) |
| 431 | return rc; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 432 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 433 | rc = pa->ver_ops->mode(pa, sid, addr, &mode); |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 434 | if (rc) |
| 435 | return rc; |
| 436 | |
| 437 | if (!(mode & 0200)) { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 438 | dev_err(&pa->spmic->dev, |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 439 | "error: impermissible write to peripheral sid:%d addr:0x%x\n", |
| 440 | sid, addr); |
| 441 | return -ENODEV; |
| 442 | } |
| 443 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 444 | if (bc >= PMIC_ARB_MAX_TRANS_BYTES) { |
| 445 | dev_err(&ctrl->dev, |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 446 | "pmic-arb supports 1..%d bytes per trans, but:%zu requested", |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 447 | PMIC_ARB_MAX_TRANS_BYTES, len); |
| 448 | return -EINVAL; |
| 449 | } |
| 450 | |
| 451 | /* Check the opcode */ |
| 452 | if (opc >= 0x40 && opc <= 0x5F) |
| 453 | opc = PMIC_ARB_OP_WRITE; |
| 454 | else if (opc >= 0x00 && opc <= 0x0F) |
| 455 | opc = PMIC_ARB_OP_EXT_WRITE; |
| 456 | else if (opc >= 0x30 && opc <= 0x37) |
| 457 | opc = PMIC_ARB_OP_EXT_WRITEL; |
Stephen Boyd | 9b76968 | 2015-08-28 12:31:10 -0700 | [diff] [blame] | 458 | else if (opc >= 0x80) |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 459 | opc = PMIC_ARB_OP_ZERO_WRITE; |
| 460 | else |
| 461 | return -EINVAL; |
| 462 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 463 | cmd = pa->ver_ops->fmt_cmd(opc, sid, addr, bc); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 464 | |
| 465 | /* Write data to FIFOs */ |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 466 | raw_spin_lock_irqsave(&pa->lock, flags); |
| 467 | pa_write_data(pa, buf, offset + PMIC_ARB_WDATA0, min_t(u8, bc, 3)); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 468 | if (bc > 3) |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 469 | pa_write_data(pa, buf + 4, offset + PMIC_ARB_WDATA1, bc - 4); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 470 | |
| 471 | /* Start the transaction */ |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 472 | pmic_arb_base_write(pa, offset + PMIC_ARB_CMD, cmd); |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 473 | rc = pmic_arb_wait_for_done(ctrl, pa->wr_base, sid, addr, |
| 474 | PMIC_ARB_CHANNEL_RW); |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 475 | raw_spin_unlock_irqrestore(&pa->lock, flags); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 476 | |
| 477 | return rc; |
| 478 | } |
| 479 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 480 | enum qpnpint_regs { |
| 481 | QPNPINT_REG_RT_STS = 0x10, |
| 482 | QPNPINT_REG_SET_TYPE = 0x11, |
| 483 | QPNPINT_REG_POLARITY_HIGH = 0x12, |
| 484 | QPNPINT_REG_POLARITY_LOW = 0x13, |
| 485 | QPNPINT_REG_LATCHED_CLR = 0x14, |
| 486 | QPNPINT_REG_EN_SET = 0x15, |
| 487 | QPNPINT_REG_EN_CLR = 0x16, |
| 488 | QPNPINT_REG_LATCHED_STS = 0x18, |
| 489 | }; |
| 490 | |
| 491 | struct spmi_pmic_arb_qpnpint_type { |
| 492 | u8 type; /* 1 -> edge */ |
| 493 | u8 polarity_high; |
| 494 | u8 polarity_low; |
| 495 | } __packed; |
| 496 | |
| 497 | /* Simplified accessor functions for irqchip callbacks */ |
| 498 | static void qpnpint_spmi_write(struct irq_data *d, u8 reg, void *buf, |
| 499 | size_t len) |
| 500 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 501 | struct spmi_pmic_arb *pa = irq_data_get_irq_chip_data(d); |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 502 | u8 sid = HWIRQ_SID(d->hwirq); |
| 503 | u8 per = HWIRQ_PER(d->hwirq); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 504 | |
| 505 | if (pmic_arb_write_cmd(pa->spmic, SPMI_CMD_EXT_WRITEL, sid, |
| 506 | (per << 8) + reg, buf, len)) |
| 507 | dev_err_ratelimited(&pa->spmic->dev, |
| 508 | "failed irqchip transaction on %x\n", |
| 509 | d->irq); |
| 510 | } |
| 511 | |
| 512 | static void qpnpint_spmi_read(struct irq_data *d, u8 reg, void *buf, size_t len) |
| 513 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 514 | struct spmi_pmic_arb *pa = irq_data_get_irq_chip_data(d); |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 515 | u8 sid = HWIRQ_SID(d->hwirq); |
| 516 | u8 per = HWIRQ_PER(d->hwirq); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 517 | |
| 518 | if (pmic_arb_read_cmd(pa->spmic, SPMI_CMD_EXT_READL, sid, |
| 519 | (per << 8) + reg, buf, len)) |
| 520 | dev_err_ratelimited(&pa->spmic->dev, |
| 521 | "failed irqchip transaction on %x\n", |
| 522 | d->irq); |
| 523 | } |
| 524 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 525 | static void cleanup_irq(struct spmi_pmic_arb *pa, u16 apid, int id) |
Abhijeet Dharmapurikar | b9b8744 | 2016-01-08 10:50:19 -0800 | [diff] [blame] | 526 | { |
Abhijeet Dharmapurikar | b9b8744 | 2016-01-08 10:50:19 -0800 | [diff] [blame] | 527 | u16 ppid = pa->apid_data[apid].ppid; |
| 528 | u8 sid = ppid >> 8; |
| 529 | u8 per = ppid & 0xFF; |
Abhijeet Dharmapurikar | b9b8744 | 2016-01-08 10:50:19 -0800 | [diff] [blame] | 530 | u8 irq_mask = BIT(id); |
| 531 | |
Abhijeet Dharmapurikar | ed44ac1 | 2016-04-26 18:31:39 -0700 | [diff] [blame] | 532 | dev_err_ratelimited(&pa->spmic->dev, |
| 533 | "cleanup_irq apid=%d sid=0x%x per=0x%x irq=%d\n", |
| 534 | apid, sid, per, id); |
Abhijeet Dharmapurikar | b9b8744 | 2016-01-08 10:50:19 -0800 | [diff] [blame] | 535 | writel_relaxed(irq_mask, pa->intr + pa->ver_ops->irq_clear(apid)); |
Abhijeet Dharmapurikar | c27d863 | 2016-02-23 15:56:23 -0800 | [diff] [blame] | 536 | |
Abhijeet Dharmapurikar | b9b8744 | 2016-01-08 10:50:19 -0800 | [diff] [blame] | 537 | if (pmic_arb_write_cmd(pa->spmic, SPMI_CMD_EXT_WRITEL, sid, |
| 538 | (per << 8) + QPNPINT_REG_LATCHED_CLR, &irq_mask, 1)) |
| 539 | dev_err_ratelimited(&pa->spmic->dev, |
| 540 | "failed to ack irq_mask = 0x%x for ppid = %x\n", |
| 541 | irq_mask, ppid); |
| 542 | |
| 543 | if (pmic_arb_write_cmd(pa->spmic, SPMI_CMD_EXT_WRITEL, sid, |
| 544 | (per << 8) + QPNPINT_REG_EN_CLR, &irq_mask, 1)) |
| 545 | dev_err_ratelimited(&pa->spmic->dev, |
| 546 | "failed to ack irq_mask = 0x%x for ppid = %x\n", |
| 547 | irq_mask, ppid); |
| 548 | } |
| 549 | |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame] | 550 | static void periph_interrupt(struct spmi_pmic_arb *pa, u16 apid, bool show) |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 551 | { |
| 552 | unsigned int irq; |
| 553 | u32 status; |
| 554 | int id; |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 555 | u8 sid = (pa->apid_data[apid].ppid >> 8) & 0xF; |
| 556 | u8 per = pa->apid_data[apid].ppid & 0xFF; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 557 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 558 | status = readl_relaxed(pa->intr + pa->ver_ops->irq_status(apid)); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 559 | while (status) { |
| 560 | id = ffs(status) - 1; |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 561 | status &= ~BIT(id); |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 562 | irq = irq_find_mapping(pa->domain, HWIRQ(sid, per, id, apid)); |
Abhijeet Dharmapurikar | b9b8744 | 2016-01-08 10:50:19 -0800 | [diff] [blame] | 563 | if (irq == 0) { |
| 564 | cleanup_irq(pa, apid, id); |
| 565 | continue; |
| 566 | } |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame] | 567 | if (show) { |
| 568 | struct irq_desc *desc; |
| 569 | const char *name = "null"; |
| 570 | |
| 571 | desc = irq_to_desc(irq); |
| 572 | if (desc == NULL) |
| 573 | name = "stray irq"; |
| 574 | else if (desc->action && desc->action->name) |
| 575 | name = desc->action->name; |
| 576 | |
| 577 | pr_warn("spmi_show_resume_irq: %d triggered [0x%01x, 0x%02x, 0x%01x] %s\n", |
| 578 | irq, sid, per, id, name); |
| 579 | } else { |
| 580 | generic_handle_irq(irq); |
| 581 | } |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 582 | } |
| 583 | } |
| 584 | |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame] | 585 | static void __pmic_arb_chained_irq(struct spmi_pmic_arb *pa, bool show) |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 586 | { |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 587 | int first = pa->min_apid >> 5; |
| 588 | int last = pa->max_apid >> 5; |
Abhijeet Dharmapurikar | 5e5078b | 2016-04-27 20:39:46 -0700 | [diff] [blame] | 589 | u32 status, enable; |
| 590 | int i, id, apid; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 591 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 592 | for (i = first; i <= last; ++i) { |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 593 | status = readl_relaxed(pa->acc_status + |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 594 | pa->ver_ops->owner_acc_status(pa->ee, i)); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 595 | while (status) { |
| 596 | id = ffs(status) - 1; |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 597 | status &= ~BIT(id); |
Abhijeet Dharmapurikar | 5e5078b | 2016-04-27 20:39:46 -0700 | [diff] [blame] | 598 | apid = id + i * 32; |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 599 | enable = readl_relaxed(pa->intr + |
Abhijeet Dharmapurikar | 5e5078b | 2016-04-27 20:39:46 -0700 | [diff] [blame] | 600 | pa->ver_ops->acc_enable(apid)); |
| 601 | if (enable & SPMI_PIC_ACC_ENABLE_BIT) |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame] | 602 | periph_interrupt(pa, apid, show); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 603 | } |
| 604 | } |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame] | 605 | } |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 606 | |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame] | 607 | static void pmic_arb_chained_irq(struct irq_desc *desc) |
| 608 | { |
| 609 | struct spmi_pmic_arb *pa = irq_desc_get_handler_data(desc); |
| 610 | struct irq_chip *chip = irq_desc_get_chip(desc); |
| 611 | |
| 612 | chained_irq_enter(chip, desc); |
| 613 | __pmic_arb_chained_irq(pa, false); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 614 | chained_irq_exit(chip, desc); |
| 615 | } |
| 616 | |
| 617 | static void qpnpint_irq_ack(struct irq_data *d) |
| 618 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 619 | struct spmi_pmic_arb *pa = irq_data_get_irq_chip_data(d); |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 620 | u8 irq = HWIRQ_IRQ(d->hwirq); |
| 621 | u16 apid = HWIRQ_APID(d->hwirq); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 622 | u8 data; |
| 623 | |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 624 | writel_relaxed(BIT(irq), pa->intr + pa->ver_ops->irq_clear(apid)); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 625 | |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 626 | data = BIT(irq); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 627 | qpnpint_spmi_write(d, QPNPINT_REG_LATCHED_CLR, &data, 1); |
| 628 | } |
| 629 | |
| 630 | static void qpnpint_irq_mask(struct irq_data *d) |
| 631 | { |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 632 | u8 irq = HWIRQ_IRQ(d->hwirq); |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 633 | u8 data = BIT(irq); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 634 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 635 | qpnpint_spmi_write(d, QPNPINT_REG_EN_CLR, &data, 1); |
| 636 | } |
| 637 | |
| 638 | static void qpnpint_irq_unmask(struct irq_data *d) |
| 639 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 640 | struct spmi_pmic_arb *pa = irq_data_get_irq_chip_data(d); |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 641 | u8 irq = HWIRQ_IRQ(d->hwirq); |
| 642 | u16 apid = HWIRQ_APID(d->hwirq); |
David Collins | a5a32ce | 2013-11-05 09:31:16 -0800 | [diff] [blame] | 643 | u8 buf[2]; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 644 | |
Abhijeet Dharmapurikar | c27d863 | 2016-02-23 15:56:23 -0800 | [diff] [blame] | 645 | writel_relaxed(SPMI_PIC_ACC_ENABLE_BIT, |
| 646 | pa->intr + pa->ver_ops->acc_enable(apid)); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 647 | |
David Collins | a5a32ce | 2013-11-05 09:31:16 -0800 | [diff] [blame] | 648 | qpnpint_spmi_read(d, QPNPINT_REG_EN_SET, &buf[0], 1); |
| 649 | if (!(buf[0] & BIT(irq))) { |
| 650 | /* |
| 651 | * Since the interrupt is currently disabled, write to both the |
| 652 | * LATCHED_CLR and EN_SET registers so that a spurious interrupt |
| 653 | * cannot be triggered when the interrupt is enabled |
| 654 | */ |
| 655 | buf[0] = BIT(irq); |
| 656 | buf[1] = BIT(irq); |
| 657 | qpnpint_spmi_write(d, QPNPINT_REG_LATCHED_CLR, &buf, 2); |
| 658 | } |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 659 | } |
| 660 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 661 | static int qpnpint_irq_set_type(struct irq_data *d, unsigned int flow_type) |
| 662 | { |
| 663 | struct spmi_pmic_arb_qpnpint_type type; |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 664 | u8 irq = HWIRQ_IRQ(d->hwirq); |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 665 | u8 bit_mask_irq = BIT(irq); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 666 | |
| 667 | qpnpint_spmi_read(d, QPNPINT_REG_SET_TYPE, &type, sizeof(type)); |
| 668 | |
| 669 | if (flow_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) { |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 670 | type.type |= bit_mask_irq; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 671 | if (flow_type & IRQF_TRIGGER_RISING) |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 672 | type.polarity_high |= bit_mask_irq; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 673 | if (flow_type & IRQF_TRIGGER_FALLING) |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 674 | type.polarity_low |= bit_mask_irq; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 675 | } else { |
| 676 | if ((flow_type & (IRQF_TRIGGER_HIGH)) && |
| 677 | (flow_type & (IRQF_TRIGGER_LOW))) |
| 678 | return -EINVAL; |
| 679 | |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 680 | type.type &= ~bit_mask_irq; /* level trig */ |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 681 | if (flow_type & IRQF_TRIGGER_HIGH) |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 682 | type.polarity_high |= bit_mask_irq; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 683 | else |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 684 | type.polarity_low |= bit_mask_irq; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 685 | } |
| 686 | |
| 687 | qpnpint_spmi_write(d, QPNPINT_REG_SET_TYPE, &type, sizeof(type)); |
Abhijeet Dharmapurikar | 2464e90 | 2016-04-19 20:06:46 -0700 | [diff] [blame] | 688 | |
| 689 | if (flow_type & IRQ_TYPE_EDGE_BOTH) |
| 690 | irq_set_handler_locked(d, handle_edge_irq); |
| 691 | else |
| 692 | irq_set_handler_locked(d, handle_level_irq); |
| 693 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 694 | return 0; |
| 695 | } |
| 696 | |
Courtney Cavin | 60be423 | 2015-07-30 10:53:54 -0700 | [diff] [blame] | 697 | static int qpnpint_get_irqchip_state(struct irq_data *d, |
| 698 | enum irqchip_irq_state which, |
| 699 | bool *state) |
| 700 | { |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 701 | u8 irq = HWIRQ_IRQ(d->hwirq); |
Courtney Cavin | 60be423 | 2015-07-30 10:53:54 -0700 | [diff] [blame] | 702 | u8 status = 0; |
| 703 | |
| 704 | if (which != IRQCHIP_STATE_LINE_LEVEL) |
| 705 | return -EINVAL; |
| 706 | |
| 707 | qpnpint_spmi_read(d, QPNPINT_REG_RT_STS, &status, 1); |
| 708 | *state = !!(status & BIT(irq)); |
| 709 | |
| 710 | return 0; |
| 711 | } |
| 712 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 713 | static struct irq_chip pmic_arb_irqchip = { |
| 714 | .name = "pmic_arb", |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 715 | .irq_ack = qpnpint_irq_ack, |
| 716 | .irq_mask = qpnpint_irq_mask, |
| 717 | .irq_unmask = qpnpint_irq_unmask, |
| 718 | .irq_set_type = qpnpint_irq_set_type, |
Courtney Cavin | 60be423 | 2015-07-30 10:53:54 -0700 | [diff] [blame] | 719 | .irq_get_irqchip_state = qpnpint_get_irqchip_state, |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 720 | .flags = IRQCHIP_MASK_ON_SUSPEND |
| 721 | | IRQCHIP_SKIP_SET_WAKE, |
| 722 | }; |
| 723 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 724 | static int qpnpint_irq_domain_dt_translate(struct irq_domain *d, |
| 725 | struct device_node *controller, |
| 726 | const u32 *intspec, |
| 727 | unsigned int intsize, |
| 728 | unsigned long *out_hwirq, |
| 729 | unsigned int *out_type) |
| 730 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 731 | struct spmi_pmic_arb *pa = d->host_data; |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 732 | int rc; |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 733 | u16 apid; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 734 | |
| 735 | dev_dbg(&pa->spmic->dev, |
| 736 | "intspec[0] 0x%1x intspec[1] 0x%02x intspec[2] 0x%02x\n", |
| 737 | intspec[0], intspec[1], intspec[2]); |
| 738 | |
Marc Zyngier | 5d4c9bc | 2015-10-13 12:51:29 +0100 | [diff] [blame] | 739 | if (irq_domain_get_of_node(d) != controller) |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 740 | return -EINVAL; |
| 741 | if (intsize != 4) |
| 742 | return -EINVAL; |
| 743 | if (intspec[0] > 0xF || intspec[1] > 0xFF || intspec[2] > 0x7) |
| 744 | return -EINVAL; |
| 745 | |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 746 | rc = pa->ver_ops->ppid_to_apid(pa, intspec[0], |
| 747 | (intspec[1] << 8), &apid); |
| 748 | if (rc < 0) { |
| 749 | dev_err(&pa->spmic->dev, |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 750 | "failed to xlate sid = 0x%x, periph = 0x%x, irq = %u rc = %d\n", |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 751 | intspec[0], intspec[1], intspec[2], rc); |
| 752 | return rc; |
| 753 | } |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 754 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 755 | if (pa->apid_data[apid].irq_owner != pa->ee) { |
| 756 | dev_err(&pa->spmic->dev, "failed to xlate sid = 0x%x, periph = 0x%x, irq = %u: ee=%u but owner=%u\n", |
| 757 | intspec[0], intspec[1], intspec[2], pa->ee, |
| 758 | pa->apid_data[apid].irq_owner); |
| 759 | return -ENODEV; |
| 760 | } |
| 761 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 762 | /* Keep track of {max,min}_apid for bounding search during interrupt */ |
| 763 | if (apid > pa->max_apid) |
| 764 | pa->max_apid = apid; |
| 765 | if (apid < pa->min_apid) |
| 766 | pa->min_apid = apid; |
| 767 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 768 | *out_hwirq = HWIRQ(intspec[0], intspec[1], intspec[2], apid); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 769 | *out_type = intspec[3] & IRQ_TYPE_SENSE_MASK; |
| 770 | |
| 771 | dev_dbg(&pa->spmic->dev, "out_hwirq = %lu\n", *out_hwirq); |
| 772 | |
| 773 | return 0; |
| 774 | } |
| 775 | |
| 776 | static int qpnpint_irq_domain_map(struct irq_domain *d, |
| 777 | unsigned int virq, |
| 778 | irq_hw_number_t hwirq) |
| 779 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 780 | struct spmi_pmic_arb *pa = d->host_data; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 781 | |
| 782 | dev_dbg(&pa->spmic->dev, "virq = %u, hwirq = %lu\n", virq, hwirq); |
| 783 | |
| 784 | irq_set_chip_and_handler(virq, &pmic_arb_irqchip, handle_level_irq); |
| 785 | irq_set_chip_data(virq, d->host_data); |
| 786 | irq_set_noprobe(virq); |
| 787 | return 0; |
| 788 | } |
| 789 | |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 790 | static int |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 791 | pmic_arb_ppid_to_apid_v1(struct spmi_pmic_arb *pa, u8 sid, u16 addr, u16 *apid) |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 792 | { |
| 793 | u16 ppid = sid << 8 | ((addr >> 8) & 0xFF); |
| 794 | u32 *mapping_table = pa->mapping_table; |
| 795 | int index = 0, i; |
| 796 | u16 apid_valid; |
| 797 | u32 data; |
| 798 | |
| 799 | apid_valid = pa->ppid_to_apid[ppid]; |
| 800 | if (apid_valid & PMIC_ARB_CHAN_VALID) { |
| 801 | *apid = (apid_valid & ~PMIC_ARB_CHAN_VALID); |
| 802 | return 0; |
| 803 | } |
| 804 | |
| 805 | for (i = 0; i < SPMI_MAPPING_TABLE_TREE_DEPTH; ++i) { |
| 806 | if (!test_and_set_bit(index, pa->mapping_table_valid)) |
| 807 | mapping_table[index] = readl_relaxed(pa->cnfg + |
| 808 | SPMI_MAPPING_TABLE_REG(index)); |
| 809 | |
| 810 | data = mapping_table[index]; |
| 811 | |
| 812 | if (ppid & BIT(SPMI_MAPPING_BIT_INDEX(data))) { |
| 813 | if (SPMI_MAPPING_BIT_IS_1_FLAG(data)) { |
| 814 | index = SPMI_MAPPING_BIT_IS_1_RESULT(data); |
| 815 | } else { |
| 816 | *apid = SPMI_MAPPING_BIT_IS_1_RESULT(data); |
| 817 | pa->ppid_to_apid[ppid] |
| 818 | = *apid | PMIC_ARB_CHAN_VALID; |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 819 | pa->apid_data[*apid].ppid = ppid; |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 820 | return 0; |
| 821 | } |
| 822 | } else { |
| 823 | if (SPMI_MAPPING_BIT_IS_0_FLAG(data)) { |
| 824 | index = SPMI_MAPPING_BIT_IS_0_RESULT(data); |
| 825 | } else { |
| 826 | *apid = SPMI_MAPPING_BIT_IS_0_RESULT(data); |
| 827 | pa->ppid_to_apid[ppid] |
| 828 | = *apid | PMIC_ARB_CHAN_VALID; |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 829 | pa->apid_data[*apid].ppid = ppid; |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 830 | return 0; |
| 831 | } |
| 832 | } |
| 833 | } |
| 834 | |
| 835 | return -ENODEV; |
| 836 | } |
| 837 | |
| 838 | static int |
Abhijeet Dharmapurikar | 7888886 | 2016-07-05 17:54:47 -0700 | [diff] [blame] | 839 | pmic_arb_mode_v1_v3(struct spmi_pmic_arb *pa, u8 sid, u16 addr, mode_t *mode) |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 840 | { |
| 841 | *mode = 0600; |
| 842 | return 0; |
| 843 | } |
| 844 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 845 | /* v1 offset per ee */ |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 846 | static int |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 847 | pmic_arb_offset_v1(struct spmi_pmic_arb *pa, u8 sid, u16 addr, |
| 848 | enum pmic_arb_channel ch_type, u32 *offset) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 849 | { |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 850 | *offset = 0x800 + 0x80 * pa->channel; |
| 851 | return 0; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 852 | } |
| 853 | |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 854 | static u16 pmic_arb_find_apid(struct spmi_pmic_arb *pa, u16 ppid) |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 855 | { |
| 856 | u32 regval, offset; |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 857 | u16 apid; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 858 | u16 id; |
| 859 | |
| 860 | /* |
| 861 | * PMIC_ARB_REG_CHNL is a table in HW mapping channel to ppid. |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 862 | * ppid_to_apid is an in-memory invert of that table. |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 863 | */ |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 864 | for (apid = pa->last_apid; apid < pa->max_periph; apid++) { |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 865 | regval = readl_relaxed(pa->cnfg + |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 866 | SPMI_OWNERSHIP_TABLE_REG(apid)); |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 867 | pa->apid_data[apid].irq_owner |
| 868 | = SPMI_OWNERSHIP_PERIPH2OWNER(regval); |
| 869 | pa->apid_data[apid].write_owner = pa->apid_data[apid].irq_owner; |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 870 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 871 | offset = pa->ver_ops->channel_map_offset(apid); |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 872 | if (offset >= pa->core_size) |
| 873 | break; |
| 874 | |
| 875 | regval = readl_relaxed(pa->core + offset); |
| 876 | if (!regval) |
| 877 | continue; |
| 878 | |
| 879 | id = (regval >> 8) & PMIC_ARB_PPID_MASK; |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 880 | pa->ppid_to_apid[id] = apid | PMIC_ARB_CHAN_VALID; |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 881 | pa->apid_data[apid].ppid = id; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 882 | if (id == ppid) { |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 883 | apid |= PMIC_ARB_CHAN_VALID; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 884 | break; |
| 885 | } |
| 886 | } |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 887 | pa->last_apid = apid & ~PMIC_ARB_CHAN_VALID; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 888 | |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 889 | return apid; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 890 | } |
| 891 | |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 892 | static int |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 893 | pmic_arb_ppid_to_apid_v2(struct spmi_pmic_arb *pa, u8 sid, u16 addr, u16 *apid) |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 894 | { |
| 895 | u16 ppid = (sid << 8) | (addr >> 8); |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 896 | u16 apid_valid; |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 897 | |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 898 | apid_valid = pa->ppid_to_apid[ppid]; |
| 899 | if (!(apid_valid & PMIC_ARB_CHAN_VALID)) |
| 900 | apid_valid = pmic_arb_find_apid(pa, ppid); |
| 901 | if (!(apid_valid & PMIC_ARB_CHAN_VALID)) |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 902 | return -ENODEV; |
| 903 | |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 904 | *apid = (apid_valid & ~PMIC_ARB_CHAN_VALID); |
| 905 | return 0; |
| 906 | } |
| 907 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 908 | static int pmic_arb_read_apid_map_v5(struct spmi_pmic_arb *pa) |
| 909 | { |
| 910 | u32 regval, offset; |
| 911 | u16 apid, prev_apid, ppid; |
| 912 | bool valid, is_irq_owner; |
| 913 | |
| 914 | /* |
| 915 | * PMIC_ARB_REG_CHNL is a table in HW mapping APID (channel) to PPID. |
| 916 | * ppid_to_apid is an in-memory invert of that table. In order to allow |
| 917 | * multiple EE's to write to a single PPID in arbiter version 5, there |
| 918 | * is more than one APID mapped to each PPID. The owner field for each |
| 919 | * of these mappings specifies the EE which is allowed to write to the |
| 920 | * APID. The owner of the last (highest) APID for a given PPID will |
| 921 | * receive interrupts from the PPID. |
| 922 | */ |
| 923 | for (apid = 0; apid < pa->max_periph; apid++) { |
| 924 | offset = pa->ver_ops->channel_map_offset(apid); |
| 925 | if (offset >= pa->core_size) |
| 926 | break; |
| 927 | |
| 928 | regval = readl_relaxed(pa->core + offset); |
| 929 | if (!regval) |
| 930 | continue; |
| 931 | ppid = (regval >> 8) & PMIC_ARB_PPID_MASK; |
| 932 | is_irq_owner = PMIC_ARB_CHAN_IS_IRQ_OWNER(regval); |
| 933 | |
| 934 | regval = readl_relaxed(pa->cnfg + |
| 935 | SPMI_OWNERSHIP_TABLE_REG(apid)); |
| 936 | pa->apid_data[apid].write_owner |
| 937 | = SPMI_OWNERSHIP_PERIPH2OWNER(regval); |
| 938 | |
| 939 | pa->apid_data[apid].irq_owner = is_irq_owner ? |
| 940 | pa->apid_data[apid].write_owner : INVALID_EE; |
| 941 | |
| 942 | valid = pa->ppid_to_apid[ppid] & PMIC_ARB_CHAN_VALID; |
| 943 | prev_apid = pa->ppid_to_apid[ppid] & ~PMIC_ARB_CHAN_VALID; |
| 944 | |
| 945 | if (valid && is_irq_owner && |
| 946 | pa->apid_data[prev_apid].write_owner == pa->ee) { |
| 947 | /* |
| 948 | * Duplicate PPID mapping after the one for this EE; |
| 949 | * override the irq owner |
| 950 | */ |
| 951 | pa->apid_data[prev_apid].irq_owner |
| 952 | = pa->apid_data[apid].irq_owner; |
| 953 | } else if (!valid || is_irq_owner) { |
| 954 | /* First PPID mapping or duplicate for another EE */ |
| 955 | pa->ppid_to_apid[ppid] = apid | PMIC_ARB_CHAN_VALID; |
| 956 | } |
| 957 | |
| 958 | pa->apid_data[apid].ppid = ppid; |
| 959 | pa->last_apid = apid; |
| 960 | } |
| 961 | |
| 962 | /* Dump the mapping table for debug purposes. */ |
| 963 | dev_dbg(&pa->spmic->dev, "PPID APID Write-EE IRQ-EE\n"); |
| 964 | for (ppid = 0; ppid < PMIC_ARB_MAX_PPID; ppid++) { |
| 965 | valid = pa->ppid_to_apid[ppid] & PMIC_ARB_CHAN_VALID; |
| 966 | apid = pa->ppid_to_apid[ppid] & ~PMIC_ARB_CHAN_VALID; |
| 967 | |
| 968 | if (valid) |
| 969 | dev_dbg(&pa->spmic->dev, "0x%03X %3u %2u %2u\n", |
| 970 | ppid, apid, pa->apid_data[apid].write_owner, |
| 971 | pa->apid_data[apid].irq_owner); |
| 972 | } |
| 973 | |
| 974 | return 0; |
| 975 | } |
| 976 | |
| 977 | static int |
| 978 | pmic_arb_ppid_to_apid_v5(struct spmi_pmic_arb *pa, u8 sid, u16 addr, u16 *apid) |
| 979 | { |
| 980 | u16 ppid = (sid << 8) | (addr >> 8); |
| 981 | |
| 982 | if (!(pa->ppid_to_apid[ppid] & PMIC_ARB_CHAN_VALID)) |
| 983 | return -ENODEV; |
| 984 | |
| 985 | *apid = pa->ppid_to_apid[ppid] & ~PMIC_ARB_CHAN_VALID; |
| 986 | |
| 987 | return 0; |
| 988 | } |
| 989 | |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 990 | static int |
| 991 | pmic_arb_mode_v2(struct spmi_pmic_arb *pa, u8 sid, u16 addr, mode_t *mode) |
| 992 | { |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 993 | u16 apid; |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 994 | int rc; |
| 995 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 996 | rc = pa->ver_ops->ppid_to_apid(pa, sid, addr, &apid); |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 997 | if (rc < 0) |
| 998 | return rc; |
| 999 | |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 1000 | *mode = 0; |
| 1001 | *mode |= 0400; |
| 1002 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 1003 | if (pa->ee == pa->apid_data[apid].write_owner) |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 1004 | *mode |= 0200; |
| 1005 | return 0; |
| 1006 | } |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1007 | |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 1008 | /* v2 offset per ppid and per ee */ |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1009 | static int |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 1010 | pmic_arb_offset_v2(struct spmi_pmic_arb *pa, u8 sid, u16 addr, |
| 1011 | enum pmic_arb_channel ch_type, u32 *offset) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1012 | { |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 1013 | u16 apid; |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 1014 | int rc; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1015 | |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 1016 | rc = pmic_arb_ppid_to_apid_v2(pa, sid, addr, &apid); |
| 1017 | if (rc < 0) |
| 1018 | return rc; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1019 | |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 1020 | *offset = 0x1000 * pa->ee + 0x8000 * apid; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1021 | return 0; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1022 | } |
| 1023 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 1024 | /* |
| 1025 | * v5 offset per ee and per apid for observer channels and per apid for |
| 1026 | * read/write channels. |
| 1027 | */ |
| 1028 | static int |
| 1029 | pmic_arb_offset_v5(struct spmi_pmic_arb *pa, u8 sid, u16 addr, |
| 1030 | enum pmic_arb_channel ch_type, u32 *offset) |
| 1031 | { |
| 1032 | u16 apid; |
| 1033 | int rc; |
| 1034 | |
| 1035 | rc = pmic_arb_ppid_to_apid_v5(pa, sid, addr, &apid); |
| 1036 | if (rc < 0) |
| 1037 | return rc; |
| 1038 | |
| 1039 | *offset = (ch_type == PMIC_ARB_CHANNEL_OBS) |
| 1040 | ? 0x10000 * pa->ee + 0x80 * apid |
| 1041 | : 0x10000 * apid; |
| 1042 | return 0; |
| 1043 | } |
| 1044 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1045 | static u32 pmic_arb_fmt_cmd_v1(u8 opc, u8 sid, u16 addr, u8 bc) |
| 1046 | { |
| 1047 | return (opc << 27) | ((sid & 0xf) << 20) | (addr << 4) | (bc & 0x7); |
| 1048 | } |
| 1049 | |
| 1050 | static u32 pmic_arb_fmt_cmd_v2(u8 opc, u8 sid, u16 addr, u8 bc) |
| 1051 | { |
| 1052 | return (opc << 27) | ((addr & 0xff) << 4) | (bc & 0x7); |
| 1053 | } |
| 1054 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 1055 | static u32 pmic_arb_owner_acc_status_v1(u8 m, u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1056 | { |
| 1057 | return 0x20 * m + 0x4 * n; |
| 1058 | } |
| 1059 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 1060 | static u32 pmic_arb_owner_acc_status_v2(u8 m, u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1061 | { |
| 1062 | return 0x100000 + 0x1000 * m + 0x4 * n; |
| 1063 | } |
| 1064 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 1065 | static u32 pmic_arb_owner_acc_status_v3(u8 m, u16 n) |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 1066 | { |
| 1067 | return 0x200000 + 0x1000 * m + 0x4 * n; |
| 1068 | } |
| 1069 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 1070 | static u32 pmic_arb_owner_acc_status_v5(u8 m, u16 n) |
| 1071 | { |
| 1072 | return 0x10000 * m + 0x4 * n; |
| 1073 | } |
| 1074 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 1075 | static u32 pmic_arb_acc_enable_v1(u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1076 | { |
| 1077 | return 0x200 + 0x4 * n; |
| 1078 | } |
| 1079 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 1080 | static u32 pmic_arb_acc_enable_v2(u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1081 | { |
| 1082 | return 0x1000 * n; |
| 1083 | } |
| 1084 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 1085 | static u32 pmic_arb_acc_enable_v5(u16 n) |
| 1086 | { |
| 1087 | return 0x100 + 0x10000 * n; |
| 1088 | } |
| 1089 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 1090 | static u32 pmic_arb_irq_status_v1(u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1091 | { |
| 1092 | return 0x600 + 0x4 * n; |
| 1093 | } |
| 1094 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 1095 | static u32 pmic_arb_irq_status_v2(u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1096 | { |
| 1097 | return 0x4 + 0x1000 * n; |
| 1098 | } |
| 1099 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 1100 | static u32 pmic_arb_irq_status_v5(u16 n) |
| 1101 | { |
| 1102 | return 0x104 + 0x10000 * n; |
| 1103 | } |
| 1104 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 1105 | static u32 pmic_arb_irq_clear_v1(u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1106 | { |
| 1107 | return 0xA00 + 0x4 * n; |
| 1108 | } |
| 1109 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 1110 | static u32 pmic_arb_irq_clear_v2(u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1111 | { |
| 1112 | return 0x8 + 0x1000 * n; |
| 1113 | } |
| 1114 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 1115 | static u32 pmic_arb_irq_clear_v5(u16 n) |
| 1116 | { |
| 1117 | return 0x108 + 0x10000 * n; |
| 1118 | } |
| 1119 | |
| 1120 | static u32 pmic_arb_channel_map_offset_v2(u16 n) |
| 1121 | { |
| 1122 | return 0x800 + 0x4 * n; |
| 1123 | } |
| 1124 | |
| 1125 | static u32 pmic_arb_channel_map_offset_v5(u16 n) |
| 1126 | { |
| 1127 | return 0x900 + 0x4 * n; |
| 1128 | } |
| 1129 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1130 | static const struct pmic_arb_ver_ops pmic_arb_v1 = { |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 1131 | .ver_str = "v1", |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 1132 | .ppid_to_apid = pmic_arb_ppid_to_apid_v1, |
Abhijeet Dharmapurikar | 7888886 | 2016-07-05 17:54:47 -0700 | [diff] [blame] | 1133 | .mode = pmic_arb_mode_v1_v3, |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1134 | .non_data_cmd = pmic_arb_non_data_cmd_v1, |
| 1135 | .offset = pmic_arb_offset_v1, |
| 1136 | .fmt_cmd = pmic_arb_fmt_cmd_v1, |
| 1137 | .owner_acc_status = pmic_arb_owner_acc_status_v1, |
| 1138 | .acc_enable = pmic_arb_acc_enable_v1, |
| 1139 | .irq_status = pmic_arb_irq_status_v1, |
| 1140 | .irq_clear = pmic_arb_irq_clear_v1, |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 1141 | .channel_map_offset = pmic_arb_channel_map_offset_v2, |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1142 | }; |
| 1143 | |
| 1144 | static const struct pmic_arb_ver_ops pmic_arb_v2 = { |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 1145 | .ver_str = "v2", |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 1146 | .ppid_to_apid = pmic_arb_ppid_to_apid_v2, |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 1147 | .mode = pmic_arb_mode_v2, |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1148 | .non_data_cmd = pmic_arb_non_data_cmd_v2, |
| 1149 | .offset = pmic_arb_offset_v2, |
| 1150 | .fmt_cmd = pmic_arb_fmt_cmd_v2, |
| 1151 | .owner_acc_status = pmic_arb_owner_acc_status_v2, |
| 1152 | .acc_enable = pmic_arb_acc_enable_v2, |
| 1153 | .irq_status = pmic_arb_irq_status_v2, |
| 1154 | .irq_clear = pmic_arb_irq_clear_v2, |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 1155 | .channel_map_offset = pmic_arb_channel_map_offset_v2, |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1156 | }; |
| 1157 | |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 1158 | static const struct pmic_arb_ver_ops pmic_arb_v3 = { |
| 1159 | .ver_str = "v3", |
| 1160 | .ppid_to_apid = pmic_arb_ppid_to_apid_v2, |
Abhijeet Dharmapurikar | 7888886 | 2016-07-05 17:54:47 -0700 | [diff] [blame] | 1161 | .mode = pmic_arb_mode_v1_v3, |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 1162 | .non_data_cmd = pmic_arb_non_data_cmd_v2, |
| 1163 | .offset = pmic_arb_offset_v2, |
| 1164 | .fmt_cmd = pmic_arb_fmt_cmd_v2, |
| 1165 | .owner_acc_status = pmic_arb_owner_acc_status_v3, |
| 1166 | .acc_enable = pmic_arb_acc_enable_v2, |
| 1167 | .irq_status = pmic_arb_irq_status_v2, |
| 1168 | .irq_clear = pmic_arb_irq_clear_v2, |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 1169 | .channel_map_offset = pmic_arb_channel_map_offset_v2, |
| 1170 | }; |
| 1171 | |
| 1172 | static const struct pmic_arb_ver_ops pmic_arb_v5 = { |
| 1173 | .ver_str = "v5", |
| 1174 | .ppid_to_apid = pmic_arb_ppid_to_apid_v5, |
| 1175 | .mode = pmic_arb_mode_v2, |
| 1176 | .non_data_cmd = pmic_arb_non_data_cmd_v2, |
| 1177 | .offset = pmic_arb_offset_v5, |
| 1178 | .fmt_cmd = pmic_arb_fmt_cmd_v2, |
| 1179 | .owner_acc_status = pmic_arb_owner_acc_status_v5, |
| 1180 | .acc_enable = pmic_arb_acc_enable_v5, |
| 1181 | .irq_status = pmic_arb_irq_status_v5, |
| 1182 | .irq_clear = pmic_arb_irq_clear_v5, |
| 1183 | .channel_map_offset = pmic_arb_channel_map_offset_v5, |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 1184 | }; |
| 1185 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1186 | static const struct irq_domain_ops pmic_arb_irq_domain_ops = { |
| 1187 | .map = qpnpint_irq_domain_map, |
| 1188 | .xlate = qpnpint_irq_domain_dt_translate, |
| 1189 | }; |
| 1190 | |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame] | 1191 | static void spmi_pmic_arb_resume(void) |
| 1192 | { |
| 1193 | if (spmi_show_resume_irq()) |
| 1194 | __pmic_arb_chained_irq(the_pa, true); |
| 1195 | } |
| 1196 | |
| 1197 | static struct syscore_ops spmi_pmic_arb_syscore_ops = { |
| 1198 | .resume = spmi_pmic_arb_resume, |
| 1199 | }; |
| 1200 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1201 | static int spmi_pmic_arb_probe(struct platform_device *pdev) |
| 1202 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 1203 | struct spmi_pmic_arb *pa; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1204 | struct spmi_controller *ctrl; |
| 1205 | struct resource *res; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1206 | void __iomem *core; |
| 1207 | u32 channel, ee, hw_ver; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1208 | int err; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1209 | |
| 1210 | ctrl = spmi_controller_alloc(&pdev->dev, sizeof(*pa)); |
| 1211 | if (!ctrl) |
| 1212 | return -ENOMEM; |
| 1213 | |
| 1214 | pa = spmi_controller_get_drvdata(ctrl); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1215 | pa->spmic = ctrl; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1216 | |
| 1217 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "core"); |
Abhijeet Dharmapurikar | 57132f5 | 2016-09-13 11:10:48 -0700 | [diff] [blame] | 1218 | if (!res) { |
| 1219 | dev_err(&pdev->dev, "core resource not specified\n"); |
| 1220 | err = -EINVAL; |
| 1221 | goto err_put_ctrl; |
| 1222 | } |
| 1223 | |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1224 | pa->core_size = resource_size(res); |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 1225 | if (pa->core_size <= 0x800) { |
| 1226 | dev_err(&pdev->dev, "core_size is smaller than 0x800. Failing Probe\n"); |
| 1227 | err = -EINVAL; |
| 1228 | goto err_put_ctrl; |
| 1229 | } |
| 1230 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1231 | core = devm_ioremap_resource(&ctrl->dev, res); |
| 1232 | if (IS_ERR(core)) { |
| 1233 | err = PTR_ERR(core); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1234 | goto err_put_ctrl; |
| 1235 | } |
| 1236 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1237 | hw_ver = readl_relaxed(core + PMIC_ARB_VERSION); |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1238 | |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 1239 | if (hw_ver < PMIC_ARB_VERSION_V2_MIN) { |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1240 | pa->ver_ops = &pmic_arb_v1; |
| 1241 | pa->wr_base = core; |
| 1242 | pa->rd_base = core; |
| 1243 | } else { |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1244 | pa->core = core; |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 1245 | |
| 1246 | if (hw_ver < PMIC_ARB_VERSION_V3_MIN) |
| 1247 | pa->ver_ops = &pmic_arb_v2; |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 1248 | else if (hw_ver < PMIC_ARB_VERSION_V5_MIN) |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 1249 | pa->ver_ops = &pmic_arb_v3; |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 1250 | else |
| 1251 | pa->ver_ops = &pmic_arb_v5; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1252 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 1253 | /* the apid to ppid table starts at PMIC_ARB_REG_CHNL0 */ |
| 1254 | pa->max_periph |
| 1255 | = (pa->core_size - pa->ver_ops->channel_map_offset(0)) / 4; |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 1256 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1257 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 1258 | "obsrvr"); |
| 1259 | pa->rd_base = devm_ioremap_resource(&ctrl->dev, res); |
| 1260 | if (IS_ERR(pa->rd_base)) { |
| 1261 | err = PTR_ERR(pa->rd_base); |
| 1262 | goto err_put_ctrl; |
| 1263 | } |
| 1264 | |
| 1265 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 1266 | "chnls"); |
| 1267 | pa->wr_base = devm_ioremap_resource(&ctrl->dev, res); |
| 1268 | if (IS_ERR(pa->wr_base)) { |
| 1269 | err = PTR_ERR(pa->wr_base); |
| 1270 | goto err_put_ctrl; |
| 1271 | } |
| 1272 | |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 1273 | pa->ppid_to_apid = devm_kcalloc(&ctrl->dev, |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1274 | PMIC_ARB_MAX_PPID, |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 1275 | sizeof(*pa->ppid_to_apid), |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1276 | GFP_KERNEL); |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 1277 | if (!pa->ppid_to_apid) { |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1278 | err = -ENOMEM; |
| 1279 | goto err_put_ctrl; |
| 1280 | } |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1281 | } |
| 1282 | |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 1283 | dev_info(&ctrl->dev, "PMIC arbiter version %s (0x%x)\n", |
| 1284 | pa->ver_ops->ver_str, hw_ver); |
| 1285 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1286 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "intr"); |
| 1287 | pa->intr = devm_ioremap_resource(&ctrl->dev, res); |
| 1288 | if (IS_ERR(pa->intr)) { |
| 1289 | err = PTR_ERR(pa->intr); |
| 1290 | goto err_put_ctrl; |
| 1291 | } |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 1292 | pa->acc_status = pa->intr; |
| 1293 | |
| 1294 | /* |
| 1295 | * PMIC arbiter v5 groups the IRQ control registers in the same hardware |
| 1296 | * module as the read/write channels. |
| 1297 | */ |
| 1298 | if (hw_ver >= PMIC_ARB_VERSION_V5_MIN) |
| 1299 | pa->intr = pa->wr_base; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1300 | |
| 1301 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cnfg"); |
| 1302 | pa->cnfg = devm_ioremap_resource(&ctrl->dev, res); |
| 1303 | if (IS_ERR(pa->cnfg)) { |
| 1304 | err = PTR_ERR(pa->cnfg); |
| 1305 | goto err_put_ctrl; |
| 1306 | } |
| 1307 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1308 | pa->irq = platform_get_irq_byname(pdev, "periph_irq"); |
| 1309 | if (pa->irq < 0) { |
| 1310 | err = pa->irq; |
| 1311 | goto err_put_ctrl; |
| 1312 | } |
| 1313 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1314 | err = of_property_read_u32(pdev->dev.of_node, "qcom,channel", &channel); |
| 1315 | if (err) { |
| 1316 | dev_err(&pdev->dev, "channel unspecified.\n"); |
| 1317 | goto err_put_ctrl; |
| 1318 | } |
| 1319 | |
| 1320 | if (channel > 5) { |
| 1321 | dev_err(&pdev->dev, "invalid channel (%u) specified.\n", |
| 1322 | channel); |
Christophe JAILLET | e98cc18 | 2016-09-26 22:24:46 +0200 | [diff] [blame] | 1323 | err = -EINVAL; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1324 | goto err_put_ctrl; |
| 1325 | } |
| 1326 | |
| 1327 | pa->channel = channel; |
| 1328 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1329 | err = of_property_read_u32(pdev->dev.of_node, "qcom,ee", &ee); |
| 1330 | if (err) { |
| 1331 | dev_err(&pdev->dev, "EE unspecified.\n"); |
| 1332 | goto err_put_ctrl; |
| 1333 | } |
| 1334 | |
| 1335 | if (ee > 5) { |
| 1336 | dev_err(&pdev->dev, "invalid EE (%u) specified\n", ee); |
| 1337 | err = -EINVAL; |
| 1338 | goto err_put_ctrl; |
| 1339 | } |
| 1340 | |
| 1341 | pa->ee = ee; |
| 1342 | |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1343 | pa->mapping_table = devm_kcalloc(&ctrl->dev, PMIC_ARB_MAX_PERIPHS - 1, |
| 1344 | sizeof(*pa->mapping_table), GFP_KERNEL); |
| 1345 | if (!pa->mapping_table) { |
| 1346 | err = -ENOMEM; |
| 1347 | goto err_put_ctrl; |
| 1348 | } |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1349 | |
| 1350 | /* Initialize max_apid/min_apid to the opposite bounds, during |
| 1351 | * the irq domain translation, we are sure to update these */ |
| 1352 | pa->max_apid = 0; |
| 1353 | pa->min_apid = PMIC_ARB_MAX_PERIPHS - 1; |
| 1354 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1355 | platform_set_drvdata(pdev, ctrl); |
| 1356 | raw_spin_lock_init(&pa->lock); |
| 1357 | |
| 1358 | ctrl->cmd = pmic_arb_cmd; |
| 1359 | ctrl->read_cmd = pmic_arb_read_cmd; |
| 1360 | ctrl->write_cmd = pmic_arb_write_cmd; |
| 1361 | |
David Collins | b2d9a40 | 2016-07-21 14:42:47 -0700 | [diff] [blame^] | 1362 | if (hw_ver >= PMIC_ARB_VERSION_V5_MIN) { |
| 1363 | err = pmic_arb_read_apid_map_v5(pa); |
| 1364 | if (err) { |
| 1365 | dev_err(&pdev->dev, "could not read APID->PPID mapping table, rc= %d\n", |
| 1366 | err); |
| 1367 | goto err_put_ctrl; |
| 1368 | } |
| 1369 | } |
| 1370 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1371 | dev_dbg(&pdev->dev, "adding irq domain\n"); |
| 1372 | pa->domain = irq_domain_add_tree(pdev->dev.of_node, |
| 1373 | &pmic_arb_irq_domain_ops, pa); |
| 1374 | if (!pa->domain) { |
| 1375 | dev_err(&pdev->dev, "unable to create irq_domain\n"); |
| 1376 | err = -ENOMEM; |
| 1377 | goto err_put_ctrl; |
| 1378 | } |
| 1379 | |
Thomas Gleixner | fb68ba6 | 2015-07-13 20:52:24 +0000 | [diff] [blame] | 1380 | irq_set_chained_handler_and_data(pa->irq, pmic_arb_chained_irq, pa); |
Nicholas Troast | 237e914 | 2016-06-14 16:39:38 -0700 | [diff] [blame] | 1381 | enable_irq_wake(pa->irq); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1382 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1383 | err = spmi_controller_add(ctrl); |
| 1384 | if (err) |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1385 | goto err_domain_remove; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1386 | |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame] | 1387 | the_pa = pa; |
| 1388 | register_syscore_ops(&spmi_pmic_arb_syscore_ops); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1389 | return 0; |
| 1390 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1391 | err_domain_remove: |
Thomas Gleixner | fb68ba6 | 2015-07-13 20:52:24 +0000 | [diff] [blame] | 1392 | irq_set_chained_handler_and_data(pa->irq, NULL, NULL); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1393 | irq_domain_remove(pa->domain); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1394 | err_put_ctrl: |
| 1395 | spmi_controller_put(ctrl); |
| 1396 | return err; |
| 1397 | } |
| 1398 | |
| 1399 | static int spmi_pmic_arb_remove(struct platform_device *pdev) |
| 1400 | { |
| 1401 | struct spmi_controller *ctrl = platform_get_drvdata(pdev); |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 1402 | struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl); |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame] | 1403 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1404 | spmi_controller_remove(ctrl); |
Thomas Gleixner | fb68ba6 | 2015-07-13 20:52:24 +0000 | [diff] [blame] | 1405 | irq_set_chained_handler_and_data(pa->irq, NULL, NULL); |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame] | 1406 | unregister_syscore_ops(&spmi_pmic_arb_syscore_ops); |
| 1407 | the_pa = NULL; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1408 | irq_domain_remove(pa->domain); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1409 | spmi_controller_put(ctrl); |
| 1410 | return 0; |
| 1411 | } |
| 1412 | |
| 1413 | static const struct of_device_id spmi_pmic_arb_match_table[] = { |
| 1414 | { .compatible = "qcom,spmi-pmic-arb", }, |
| 1415 | {}, |
| 1416 | }; |
| 1417 | MODULE_DEVICE_TABLE(of, spmi_pmic_arb_match_table); |
| 1418 | |
| 1419 | static struct platform_driver spmi_pmic_arb_driver = { |
| 1420 | .probe = spmi_pmic_arb_probe, |
| 1421 | .remove = spmi_pmic_arb_remove, |
| 1422 | .driver = { |
| 1423 | .name = "spmi_pmic_arb", |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1424 | .of_match_table = spmi_pmic_arb_match_table, |
| 1425 | }, |
| 1426 | }; |
Abhijeet Dharmapurikar | df9bf94 | 2015-09-23 11:36:23 -0700 | [diff] [blame] | 1427 | |
| 1428 | int __init spmi_pmic_arb_init(void) |
| 1429 | { |
| 1430 | return platform_driver_register(&spmi_pmic_arb_driver); |
| 1431 | } |
| 1432 | arch_initcall(spmi_pmic_arb_init); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1433 | |
| 1434 | MODULE_LICENSE("GPL v2"); |
| 1435 | MODULE_ALIAS("platform:spmi_pmic_arb"); |