Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 1 | /* |
Matt Wagantall | a72d03d | 2013-02-26 21:13:14 -0800 | [diff] [blame] | 2 | * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [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 | */ |
| 13 | |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/platform_device.h> |
| 17 | #include <linux/io.h> |
| 18 | #include <linux/iopoll.h> |
| 19 | #include <linux/ioport.h> |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 20 | #include <linux/delay.h> |
| 21 | #include <linux/sched.h> |
| 22 | #include <linux/clk.h> |
| 23 | #include <linux/err.h> |
| 24 | #include <linux/of.h> |
| 25 | #include <linux/regulator/consumer.h> |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 26 | #include <linux/interrupt.h> |
Seemanta Dutta | 6e58f54 | 2013-03-04 19:28:16 -0800 | [diff] [blame] | 27 | #include <linux/of_gpio.h> |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 28 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 29 | #include <mach/subsystem_restart.h> |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 30 | #include <mach/clk.h> |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 31 | #include <mach/msm_smsm.h> |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 32 | |
| 33 | #include "peripheral-loader.h" |
| 34 | #include "pil-q6v5.h" |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 35 | #include "ramdump.h" |
Vikram Mulukutla | 896d058 | 2012-10-17 16:57:46 -0700 | [diff] [blame] | 36 | #include "sysmon.h" |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 37 | |
| 38 | /* Q6 Register Offsets */ |
| 39 | #define QDSP6SS_RST_EVB 0x010 |
| 40 | |
| 41 | /* AXI Halting Registers */ |
| 42 | #define MSS_Q6_HALT_BASE 0x180 |
| 43 | #define MSS_MODEM_HALT_BASE 0x200 |
| 44 | #define MSS_NC_HALT_BASE 0x280 |
| 45 | |
| 46 | /* RMB Status Register Values */ |
| 47 | #define STATUS_PBL_SUCCESS 0x1 |
| 48 | #define STATUS_XPU_UNLOCKED 0x1 |
| 49 | #define STATUS_XPU_UNLOCKED_SCRIBBLED 0x2 |
| 50 | |
| 51 | /* PBL/MBA interface registers */ |
| 52 | #define RMB_MBA_IMAGE 0x00 |
| 53 | #define RMB_PBL_STATUS 0x04 |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 54 | #define RMB_MBA_COMMAND 0x08 |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 55 | #define RMB_MBA_STATUS 0x0C |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 56 | #define RMB_PMI_META_DATA 0x10 |
| 57 | #define RMB_PMI_CODE_START 0x14 |
| 58 | #define RMB_PMI_CODE_LENGTH 0x18 |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 59 | |
Matt Wagantall | 70315fb | 2012-12-03 16:33:28 -0800 | [diff] [blame] | 60 | #define VDD_MSS_UV 1050000 |
Vikram Mulukutla | c06e4de | 2013-03-13 15:58:28 -0700 | [diff] [blame] | 61 | #define MAX_VDD_MSS_UV 1150000 |
Patrick Daly | 068ea8e | 2013-03-04 19:52:40 -0800 | [diff] [blame] | 62 | #define MAX_VDD_MX_UV 1150000 |
Matt Wagantall | 70315fb | 2012-12-03 16:33:28 -0800 | [diff] [blame] | 63 | |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 64 | #define PROXY_TIMEOUT_MS 10000 |
| 65 | #define POLL_INTERVAL_US 50 |
| 66 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 67 | #define CMD_META_DATA_READY 0x1 |
| 68 | #define CMD_LOAD_READY 0x2 |
| 69 | |
| 70 | #define STATUS_META_DATA_AUTH_SUCCESS 0x3 |
| 71 | #define STATUS_AUTH_COMPLETE 0x4 |
| 72 | |
| 73 | #define MAX_SSR_REASON_LEN 81U |
| 74 | |
Patrick Daly | 11ca6af | 2013-03-03 17:07:28 -0800 | [diff] [blame] | 75 | /* External BHS */ |
| 76 | #define EXTERNAL_BHS_ON BIT(0) |
| 77 | #define EXTERNAL_BHS_STATUS BIT(4) |
| 78 | #define BHS_TIMEOUT_US 50 |
| 79 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 80 | struct mba_data { |
| 81 | void __iomem *metadata_base; |
| 82 | void __iomem *rmb_base; |
| 83 | void __iomem *io_clamp_reg; |
| 84 | unsigned long metadata_phys; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 85 | struct pil_desc desc; |
| 86 | struct subsys_device *subsys; |
| 87 | struct subsys_desc subsys_desc; |
Vikram Mulukutla | 896d058 | 2012-10-17 16:57:46 -0700 | [diff] [blame] | 88 | void *adsp_state_notifier; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 89 | u32 img_length; |
| 90 | struct q6v5_data *q6; |
Patrick Daly | b830a3f | 2013-03-11 14:21:34 -0700 | [diff] [blame] | 91 | bool self_auth; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 92 | void *ramdump_dev; |
| 93 | void *smem_ramdump_dev; |
| 94 | bool crash_shutdown; |
| 95 | bool ignore_errors; |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 96 | int is_loadable; |
Seemanta Dutta | 6e58f54 | 2013-03-04 19:28:16 -0800 | [diff] [blame] | 97 | int err_fatal_irq; |
| 98 | int force_stop_gpio; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 99 | }; |
| 100 | |
Matt Wagantall | d251d8e | 2012-08-16 18:53:53 -0700 | [diff] [blame] | 101 | static int pbl_mba_boot_timeout_ms = 100; |
| 102 | module_param(pbl_mba_boot_timeout_ms, int, S_IRUGO | S_IWUSR); |
| 103 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 104 | static int modem_auth_timeout_ms = 10000; |
| 105 | module_param(modem_auth_timeout_ms, int, S_IRUGO | S_IWUSR); |
| 106 | |
Stephen Boyd | 3826cd4 | 2012-07-05 17:37:53 -0700 | [diff] [blame] | 107 | static int pil_mss_power_up(struct q6v5_data *drv) |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 108 | { |
| 109 | int ret; |
Stephen Boyd | 3826cd4 | 2012-07-05 17:37:53 -0700 | [diff] [blame] | 110 | struct device *dev = drv->desc.dev; |
Patrick Daly | 11ca6af | 2013-03-03 17:07:28 -0800 | [diff] [blame] | 111 | u32 regval; |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 112 | |
| 113 | ret = regulator_enable(drv->vreg); |
| 114 | if (ret) |
Matt Wagantall | 70315fb | 2012-12-03 16:33:28 -0800 | [diff] [blame] | 115 | dev_err(dev, "Failed to enable modem regulator.\n"); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 116 | |
Patrick Daly | 11ca6af | 2013-03-03 17:07:28 -0800 | [diff] [blame] | 117 | if (drv->cxrail_bhs) { |
| 118 | regval = readl_relaxed(drv->cxrail_bhs); |
| 119 | regval |= EXTERNAL_BHS_ON; |
| 120 | writel_relaxed(regval, drv->cxrail_bhs); |
| 121 | |
| 122 | ret = readl_poll_timeout(drv->cxrail_bhs, regval, |
| 123 | regval & EXTERNAL_BHS_STATUS, 1, BHS_TIMEOUT_US); |
| 124 | } |
| 125 | |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 126 | return ret; |
| 127 | } |
| 128 | |
Stephen Boyd | 3826cd4 | 2012-07-05 17:37:53 -0700 | [diff] [blame] | 129 | static int pil_mss_power_down(struct q6v5_data *drv) |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 130 | { |
Patrick Daly | 11ca6af | 2013-03-03 17:07:28 -0800 | [diff] [blame] | 131 | u32 regval; |
| 132 | |
| 133 | if (drv->cxrail_bhs) { |
| 134 | regval = readl_relaxed(drv->cxrail_bhs); |
| 135 | regval &= ~EXTERNAL_BHS_ON; |
| 136 | writel_relaxed(regval, drv->cxrail_bhs); |
| 137 | } |
| 138 | |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 139 | return regulator_disable(drv->vreg); |
| 140 | } |
| 141 | |
Matt Wagantall | 8c2246d | 2012-08-12 17:08:04 -0700 | [diff] [blame] | 142 | static int pil_mss_enable_clks(struct q6v5_data *drv) |
| 143 | { |
| 144 | int ret; |
| 145 | |
| 146 | ret = clk_prepare_enable(drv->ahb_clk); |
| 147 | if (ret) |
| 148 | goto err_ahb_clk; |
Matt Wagantall | 8c2246d | 2012-08-12 17:08:04 -0700 | [diff] [blame] | 149 | ret = clk_prepare_enable(drv->axi_clk); |
| 150 | if (ret) |
| 151 | goto err_axi_clk; |
Matt Wagantall | 8c2246d | 2012-08-12 17:08:04 -0700 | [diff] [blame] | 152 | ret = clk_prepare_enable(drv->rom_clk); |
| 153 | if (ret) |
| 154 | goto err_rom_clk; |
| 155 | |
| 156 | return 0; |
| 157 | |
| 158 | err_rom_clk: |
Matt Wagantall | 8c2246d | 2012-08-12 17:08:04 -0700 | [diff] [blame] | 159 | clk_disable_unprepare(drv->axi_clk); |
| 160 | err_axi_clk: |
Matt Wagantall | 8c2246d | 2012-08-12 17:08:04 -0700 | [diff] [blame] | 161 | clk_disable_unprepare(drv->ahb_clk); |
| 162 | err_ahb_clk: |
| 163 | return ret; |
| 164 | } |
| 165 | |
| 166 | static void pil_mss_disable_clks(struct q6v5_data *drv) |
| 167 | { |
| 168 | clk_disable_unprepare(drv->rom_clk); |
Matt Wagantall | 8c2246d | 2012-08-12 17:08:04 -0700 | [diff] [blame] | 169 | clk_disable_unprepare(drv->axi_clk); |
Matt Wagantall | 8c2246d | 2012-08-12 17:08:04 -0700 | [diff] [blame] | 170 | clk_disable_unprepare(drv->ahb_clk); |
| 171 | } |
| 172 | |
Stephen Boyd | 3826cd4 | 2012-07-05 17:37:53 -0700 | [diff] [blame] | 173 | static int wait_for_mba_ready(struct q6v5_data *drv) |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 174 | { |
Stephen Boyd | 3826cd4 | 2012-07-05 17:37:53 -0700 | [diff] [blame] | 175 | struct device *dev = drv->desc.dev; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 176 | struct mba_data *mba = platform_get_drvdata(to_platform_device(dev)); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 177 | int ret; |
| 178 | u32 status; |
| 179 | |
| 180 | /* Wait for PBL completion. */ |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 181 | ret = readl_poll_timeout(mba->rmb_base + RMB_PBL_STATUS, status, |
Matt Wagantall | d251d8e | 2012-08-16 18:53:53 -0700 | [diff] [blame] | 182 | status != 0, POLL_INTERVAL_US, pbl_mba_boot_timeout_ms * 1000); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 183 | if (ret) { |
| 184 | dev_err(dev, "PBL boot timed out\n"); |
| 185 | return ret; |
| 186 | } |
| 187 | if (status != STATUS_PBL_SUCCESS) { |
| 188 | dev_err(dev, "PBL returned unexpected status %d\n", status); |
| 189 | return -EINVAL; |
| 190 | } |
| 191 | |
| 192 | /* Wait for MBA completion. */ |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 193 | ret = readl_poll_timeout(mba->rmb_base + RMB_MBA_STATUS, status, |
Matt Wagantall | d251d8e | 2012-08-16 18:53:53 -0700 | [diff] [blame] | 194 | status != 0, POLL_INTERVAL_US, pbl_mba_boot_timeout_ms * 1000); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 195 | if (ret) { |
| 196 | dev_err(dev, "MBA boot timed out\n"); |
| 197 | return ret; |
| 198 | } |
| 199 | if (status != STATUS_XPU_UNLOCKED && |
| 200 | status != STATUS_XPU_UNLOCKED_SCRIBBLED) { |
| 201 | dev_err(dev, "MBA returned unexpected status %d\n", status); |
| 202 | return -EINVAL; |
| 203 | } |
| 204 | |
| 205 | return 0; |
| 206 | } |
| 207 | |
| 208 | static int pil_mss_shutdown(struct pil_desc *pil) |
| 209 | { |
Stephen Boyd | 3826cd4 | 2012-07-05 17:37:53 -0700 | [diff] [blame] | 210 | struct q6v5_data *drv = container_of(pil, struct q6v5_data, desc); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 211 | |
| 212 | pil_q6v5_halt_axi_port(pil, drv->axi_halt_base + MSS_Q6_HALT_BASE); |
| 213 | pil_q6v5_halt_axi_port(pil, drv->axi_halt_base + MSS_MODEM_HALT_BASE); |
| 214 | pil_q6v5_halt_axi_port(pil, drv->axi_halt_base + MSS_NC_HALT_BASE); |
| 215 | |
| 216 | /* |
| 217 | * If the shutdown function is called before the reset function, clocks |
| 218 | * and power will not be enabled yet. Enable them here so that register |
| 219 | * writes performed during the shutdown succeed. |
| 220 | */ |
| 221 | if (drv->is_booted == false) { |
Stephen Boyd | 3826cd4 | 2012-07-05 17:37:53 -0700 | [diff] [blame] | 222 | pil_mss_power_up(drv); |
Matt Wagantall | 8c2246d | 2012-08-12 17:08:04 -0700 | [diff] [blame] | 223 | pil_mss_enable_clks(drv); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 224 | } |
| 225 | pil_q6v5_shutdown(pil); |
| 226 | |
Matt Wagantall | 8c2246d | 2012-08-12 17:08:04 -0700 | [diff] [blame] | 227 | pil_mss_disable_clks(drv); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 228 | |
| 229 | writel_relaxed(1, drv->restart_reg); |
| 230 | |
Patrick Daly | 11ca6af | 2013-03-03 17:07:28 -0800 | [diff] [blame] | 231 | /* |
| 232 | * access to the cx_rail_bhs is restricted until after the gcc_mss |
| 233 | * reset is asserted once the PBL starts executing. |
| 234 | */ |
| 235 | pil_mss_power_down(drv); |
| 236 | |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 237 | drv->is_booted = false; |
| 238 | |
| 239 | return 0; |
| 240 | } |
| 241 | |
| 242 | static int pil_mss_reset(struct pil_desc *pil) |
| 243 | { |
Stephen Boyd | 3826cd4 | 2012-07-05 17:37:53 -0700 | [diff] [blame] | 244 | struct q6v5_data *drv = container_of(pil, struct q6v5_data, desc); |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 245 | struct platform_device *pdev = to_platform_device(pil->dev); |
| 246 | struct mba_data *mba = platform_get_drvdata(pdev); |
Stephen Boyd | 3030c25 | 2012-08-08 17:24:05 -0700 | [diff] [blame] | 247 | unsigned long start_addr = pil_get_entry_addr(pil); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 248 | int ret; |
| 249 | |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 250 | /* |
| 251 | * Bring subsystem out of reset and enable required |
| 252 | * regulators and clocks. |
| 253 | */ |
Stephen Boyd | 3826cd4 | 2012-07-05 17:37:53 -0700 | [diff] [blame] | 254 | ret = pil_mss_power_up(drv); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 255 | if (ret) |
| 256 | goto err_power; |
| 257 | |
Patrick Daly | 11ca6af | 2013-03-03 17:07:28 -0800 | [diff] [blame] | 258 | /* Deassert reset to subsystem and wait for propagation */ |
| 259 | writel_relaxed(0, drv->restart_reg); |
| 260 | mb(); |
| 261 | udelay(2); |
| 262 | |
Matt Wagantall | 8c2246d | 2012-08-12 17:08:04 -0700 | [diff] [blame] | 263 | ret = pil_mss_enable_clks(drv); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 264 | if (ret) |
| 265 | goto err_clks; |
| 266 | |
| 267 | /* Program Image Address */ |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 268 | if (mba->self_auth) { |
Stephen Boyd | 3030c25 | 2012-08-08 17:24:05 -0700 | [diff] [blame] | 269 | writel_relaxed(start_addr, mba->rmb_base + RMB_MBA_IMAGE); |
Matt Wagantall | f11928a | 2012-07-27 15:47:59 -0700 | [diff] [blame] | 270 | /* Ensure write to RMB base occurs before reset is released. */ |
| 271 | mb(); |
| 272 | } else { |
Stephen Boyd | 3030c25 | 2012-08-08 17:24:05 -0700 | [diff] [blame] | 273 | writel_relaxed((start_addr >> 4) & 0x0FFFFFF0, |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 274 | drv->reg_base + QDSP6SS_RST_EVB); |
Matt Wagantall | f11928a | 2012-07-27 15:47:59 -0700 | [diff] [blame] | 275 | } |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 276 | |
| 277 | ret = pil_q6v5_reset(pil); |
| 278 | if (ret) |
| 279 | goto err_q6v5_reset; |
| 280 | |
| 281 | /* Wait for MBA to start. Check for PBL and MBA errors while waiting. */ |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 282 | if (mba->self_auth) { |
Stephen Boyd | 3826cd4 | 2012-07-05 17:37:53 -0700 | [diff] [blame] | 283 | ret = wait_for_mba_ready(drv); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 284 | if (ret) |
| 285 | goto err_auth; |
| 286 | } |
| 287 | |
| 288 | drv->is_booted = true; |
| 289 | |
| 290 | return 0; |
| 291 | |
| 292 | err_auth: |
| 293 | pil_q6v5_shutdown(pil); |
| 294 | err_q6v5_reset: |
Matt Wagantall | 8c2246d | 2012-08-12 17:08:04 -0700 | [diff] [blame] | 295 | pil_mss_disable_clks(drv); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 296 | err_clks: |
Stephen Boyd | 3826cd4 | 2012-07-05 17:37:53 -0700 | [diff] [blame] | 297 | pil_mss_power_down(drv); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 298 | err_power: |
| 299 | return ret; |
| 300 | } |
| 301 | |
Matt Wagantall | 70315fb | 2012-12-03 16:33:28 -0800 | [diff] [blame] | 302 | static int pil_q6v5_mss_make_proxy_votes(struct pil_desc *pil) |
| 303 | { |
| 304 | int ret; |
| 305 | struct q6v5_data *drv = container_of(pil, struct q6v5_data, desc); |
| 306 | |
| 307 | ret = regulator_set_voltage(drv->vreg_mx, VDD_MSS_UV, MAX_VDD_MX_UV); |
| 308 | if (ret) { |
| 309 | dev_err(pil->dev, "Failed to request vreg_mx voltage\n"); |
| 310 | return ret; |
| 311 | } |
| 312 | |
| 313 | ret = regulator_enable(drv->vreg_mx); |
| 314 | if (ret) { |
| 315 | dev_err(pil->dev, "Failed to enable vreg_mx\n"); |
| 316 | regulator_set_voltage(drv->vreg_mx, 0, MAX_VDD_MX_UV); |
| 317 | return ret; |
| 318 | } |
| 319 | |
| 320 | ret = pil_q6v5_make_proxy_votes(pil); |
| 321 | if (ret) { |
| 322 | regulator_disable(drv->vreg_mx); |
| 323 | regulator_set_voltage(drv->vreg_mx, 0, MAX_VDD_MX_UV); |
| 324 | } |
| 325 | |
| 326 | return ret; |
| 327 | } |
| 328 | |
| 329 | static void pil_q6v5_mss_remove_proxy_votes(struct pil_desc *pil) |
| 330 | { |
| 331 | struct q6v5_data *drv = container_of(pil, struct q6v5_data, desc); |
| 332 | pil_q6v5_remove_proxy_votes(pil); |
| 333 | regulator_disable(drv->vreg_mx); |
| 334 | regulator_set_voltage(drv->vreg_mx, 0, MAX_VDD_MX_UV); |
| 335 | } |
| 336 | |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 337 | static struct pil_reset_ops pil_mss_ops = { |
Matt Wagantall | 70315fb | 2012-12-03 16:33:28 -0800 | [diff] [blame] | 338 | .proxy_vote = pil_q6v5_mss_make_proxy_votes, |
| 339 | .proxy_unvote = pil_q6v5_mss_remove_proxy_votes, |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 340 | .auth_and_reset = pil_mss_reset, |
| 341 | .shutdown = pil_mss_shutdown, |
| 342 | }; |
| 343 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 344 | static int pil_mba_make_proxy_votes(struct pil_desc *pil) |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 345 | { |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 346 | int ret; |
| 347 | struct mba_data *drv = dev_get_drvdata(pil->dev); |
| 348 | |
| 349 | ret = clk_prepare_enable(drv->q6->xo); |
| 350 | if (ret) { |
| 351 | dev_err(pil->dev, "Failed to enable XO\n"); |
| 352 | return ret; |
| 353 | } |
| 354 | return 0; |
| 355 | } |
| 356 | |
| 357 | static void pil_mba_remove_proxy_votes(struct pil_desc *pil) |
| 358 | { |
| 359 | struct mba_data *drv = dev_get_drvdata(pil->dev); |
| 360 | clk_disable_unprepare(drv->q6->xo); |
| 361 | } |
| 362 | |
| 363 | static int pil_mba_init_image(struct pil_desc *pil, |
| 364 | const u8 *metadata, size_t size) |
| 365 | { |
| 366 | struct mba_data *drv = dev_get_drvdata(pil->dev); |
| 367 | s32 status; |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 368 | int ret; |
| 369 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 370 | /* Copy metadata to assigned shared buffer location */ |
| 371 | memcpy(drv->metadata_base, metadata, size); |
| 372 | |
| 373 | /* Initialize length counter to 0 */ |
| 374 | writel_relaxed(0, drv->rmb_base + RMB_PMI_CODE_LENGTH); |
| 375 | drv->img_length = 0; |
| 376 | |
| 377 | /* Pass address of meta-data to the MBA and perform authentication */ |
| 378 | writel_relaxed(drv->metadata_phys, drv->rmb_base + RMB_PMI_META_DATA); |
| 379 | writel_relaxed(CMD_META_DATA_READY, drv->rmb_base + RMB_MBA_COMMAND); |
| 380 | ret = readl_poll_timeout(drv->rmb_base + RMB_MBA_STATUS, status, |
| 381 | status == STATUS_META_DATA_AUTH_SUCCESS || status < 0, |
| 382 | POLL_INTERVAL_US, modem_auth_timeout_ms * 1000); |
| 383 | if (ret) { |
| 384 | dev_err(pil->dev, "MBA authentication of headers timed out\n"); |
| 385 | } else if (status < 0) { |
| 386 | dev_err(pil->dev, "MBA returned error %d for headers\n", |
| 387 | status); |
| 388 | ret = -EINVAL; |
| 389 | } |
| 390 | |
| 391 | return ret; |
| 392 | } |
| 393 | |
| 394 | static int pil_mba_verify_blob(struct pil_desc *pil, u32 phy_addr, |
| 395 | size_t size) |
| 396 | { |
| 397 | struct mba_data *drv = dev_get_drvdata(pil->dev); |
| 398 | s32 status; |
| 399 | |
| 400 | /* Begin image authentication */ |
| 401 | if (drv->img_length == 0) { |
| 402 | writel_relaxed(phy_addr, drv->rmb_base + RMB_PMI_CODE_START); |
| 403 | writel_relaxed(CMD_LOAD_READY, drv->rmb_base + RMB_MBA_COMMAND); |
| 404 | } |
| 405 | /* Increment length counter */ |
| 406 | drv->img_length += size; |
| 407 | writel_relaxed(drv->img_length, drv->rmb_base + RMB_PMI_CODE_LENGTH); |
| 408 | |
| 409 | status = readl_relaxed(drv->rmb_base + RMB_MBA_STATUS); |
| 410 | if (status < 0) { |
| 411 | dev_err(pil->dev, "MBA returned error %d\n", status); |
| 412 | return -EINVAL; |
| 413 | } |
| 414 | |
| 415 | return 0; |
| 416 | } |
| 417 | |
| 418 | static int pil_mba_auth(struct pil_desc *pil) |
| 419 | { |
| 420 | struct mba_data *drv = dev_get_drvdata(pil->dev); |
| 421 | int ret; |
| 422 | s32 status; |
| 423 | |
| 424 | /* Wait for all segments to be authenticated or an error to occur */ |
| 425 | ret = readl_poll_timeout(drv->rmb_base + RMB_MBA_STATUS, status, |
| 426 | status == STATUS_AUTH_COMPLETE || status < 0, |
| 427 | 50, modem_auth_timeout_ms * 1000); |
| 428 | if (ret) { |
| 429 | dev_err(pil->dev, "MBA authentication of image timed out\n"); |
| 430 | } else if (status < 0) { |
| 431 | dev_err(pil->dev, "MBA returned error %d for image\n", status); |
| 432 | ret = -EINVAL; |
| 433 | } |
| 434 | |
| 435 | return ret; |
| 436 | } |
| 437 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 438 | static struct pil_reset_ops pil_mba_ops = { |
| 439 | .init_image = pil_mba_init_image, |
| 440 | .proxy_vote = pil_mba_make_proxy_votes, |
| 441 | .proxy_unvote = pil_mba_remove_proxy_votes, |
| 442 | .verify_blob = pil_mba_verify_blob, |
| 443 | .auth_and_reset = pil_mba_auth, |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 444 | }; |
| 445 | |
| 446 | #define subsys_to_drv(d) container_of(d, struct mba_data, subsys_desc) |
| 447 | |
| 448 | static void log_modem_sfr(void) |
| 449 | { |
| 450 | u32 size; |
| 451 | char *smem_reason, reason[MAX_SSR_REASON_LEN]; |
| 452 | |
| 453 | smem_reason = smem_get_entry(SMEM_SSR_REASON_MSS0, &size); |
| 454 | if (!smem_reason || !size) { |
| 455 | pr_err("modem subsystem failure reason: (unknown, smem_get_entry failed).\n"); |
| 456 | return; |
| 457 | } |
| 458 | if (!smem_reason[0]) { |
| 459 | pr_err("modem subsystem failure reason: (unknown, empty string found).\n"); |
| 460 | return; |
| 461 | } |
| 462 | |
| 463 | strlcpy(reason, smem_reason, min(size, sizeof(reason))); |
| 464 | pr_err("modem subsystem failure reason: %s.\n", reason); |
| 465 | |
| 466 | smem_reason[0] = '\0'; |
| 467 | wmb(); |
| 468 | } |
| 469 | |
| 470 | static void restart_modem(struct mba_data *drv) |
| 471 | { |
| 472 | log_modem_sfr(); |
| 473 | drv->ignore_errors = true; |
| 474 | subsystem_restart_dev(drv->subsys); |
| 475 | } |
| 476 | |
Seemanta Dutta | 6e58f54 | 2013-03-04 19:28:16 -0800 | [diff] [blame] | 477 | static irqreturn_t modem_err_fatal_intr_handler(int irq, void *dev_id) |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 478 | { |
Seemanta Dutta | 6e58f54 | 2013-03-04 19:28:16 -0800 | [diff] [blame] | 479 | struct mba_data *drv = dev_id; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 480 | |
Seemanta Dutta | 6e58f54 | 2013-03-04 19:28:16 -0800 | [diff] [blame] | 481 | /* Ignore if we're the one that set the force stop GPIO */ |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 482 | if (drv->crash_shutdown) |
Seemanta Dutta | 6e58f54 | 2013-03-04 19:28:16 -0800 | [diff] [blame] | 483 | return IRQ_HANDLED; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 484 | |
Seemanta Dutta | 6e58f54 | 2013-03-04 19:28:16 -0800 | [diff] [blame] | 485 | pr_err("Fatal error on the modem.\n"); |
| 486 | restart_modem(drv); |
| 487 | return IRQ_HANDLED; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 488 | } |
| 489 | |
| 490 | static int modem_shutdown(const struct subsys_desc *subsys) |
| 491 | { |
Stephen Boyd | e83a0a2 | 2012-06-29 13:51:27 -0700 | [diff] [blame] | 492 | struct mba_data *drv = subsys_to_drv(subsys); |
| 493 | |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 494 | if (!drv->is_loadable) |
Vikram Mulukutla | 1d958af | 2012-11-20 14:06:12 -0800 | [diff] [blame] | 495 | return 0; |
Matt Wagantall | a72d03d | 2013-02-26 21:13:14 -0800 | [diff] [blame] | 496 | pil_shutdown(&drv->desc); |
Stephen Boyd | e83a0a2 | 2012-06-29 13:51:27 -0700 | [diff] [blame] | 497 | pil_shutdown(&drv->q6->desc); |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 498 | return 0; |
| 499 | } |
| 500 | |
| 501 | static int modem_powerup(const struct subsys_desc *subsys) |
| 502 | { |
| 503 | struct mba_data *drv = subsys_to_drv(subsys); |
Stephen Boyd | e83a0a2 | 2012-06-29 13:51:27 -0700 | [diff] [blame] | 504 | int ret; |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 505 | |
| 506 | if (!drv->is_loadable) |
Vikram Mulukutla | 1d958af | 2012-11-20 14:06:12 -0800 | [diff] [blame] | 507 | return 0; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 508 | /* |
| 509 | * At this time, the modem is shutdown. Therefore this function cannot |
| 510 | * run concurrently with either the watchdog bite error handler or the |
| 511 | * SMSM callback, making it safe to unset the flag below. |
| 512 | */ |
| 513 | drv->ignore_errors = false; |
Stephen Boyd | e83a0a2 | 2012-06-29 13:51:27 -0700 | [diff] [blame] | 514 | ret = pil_boot(&drv->q6->desc); |
| 515 | if (ret) |
| 516 | return ret; |
| 517 | ret = pil_boot(&drv->desc); |
| 518 | if (ret) |
| 519 | pil_shutdown(&drv->q6->desc); |
| 520 | return ret; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 521 | } |
| 522 | |
| 523 | static void modem_crash_shutdown(const struct subsys_desc *subsys) |
| 524 | { |
| 525 | struct mba_data *drv = subsys_to_drv(subsys); |
| 526 | drv->crash_shutdown = true; |
Seemanta Dutta | 6e58f54 | 2013-03-04 19:28:16 -0800 | [diff] [blame] | 527 | gpio_set_value(drv->force_stop_gpio, 1); |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 528 | } |
| 529 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 530 | static struct ramdump_segment smem_segments[] = { |
| 531 | {0x0FA00000, 0x0FC00000 - 0x0FA00000}, |
| 532 | }; |
| 533 | |
| 534 | static int modem_ramdump(int enable, const struct subsys_desc *subsys) |
| 535 | { |
| 536 | struct mba_data *drv = subsys_to_drv(subsys); |
| 537 | int ret; |
| 538 | |
| 539 | if (!enable) |
| 540 | return 0; |
| 541 | |
Stephen Boyd | e83a0a2 | 2012-06-29 13:51:27 -0700 | [diff] [blame] | 542 | ret = pil_boot(&drv->q6->desc); |
| 543 | if (ret) |
| 544 | return ret; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 545 | |
Stephen Boyd | 05c45f2 | 2013-01-24 12:02:28 -0800 | [diff] [blame] | 546 | ret = pil_do_ramdump(&drv->desc, drv->ramdump_dev); |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 547 | if (ret < 0) { |
| 548 | pr_err("Unable to dump modem fw memory (rc = %d).\n", ret); |
| 549 | goto out; |
| 550 | } |
| 551 | |
Stephen Boyd | 5eb17ce | 2012-11-29 15:34:21 -0800 | [diff] [blame] | 552 | ret = do_elf_ramdump(drv->smem_ramdump_dev, smem_segments, |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 553 | ARRAY_SIZE(smem_segments)); |
| 554 | if (ret < 0) { |
| 555 | pr_err("Unable to dump smem memory (rc = %d).\n", ret); |
| 556 | goto out; |
| 557 | } |
| 558 | |
| 559 | out: |
Stephen Boyd | e83a0a2 | 2012-06-29 13:51:27 -0700 | [diff] [blame] | 560 | pil_shutdown(&drv->q6->desc); |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 561 | return ret; |
| 562 | } |
| 563 | |
Vikram Mulukutla | 896d058 | 2012-10-17 16:57:46 -0700 | [diff] [blame] | 564 | static int adsp_state_notifier_fn(struct notifier_block *this, |
| 565 | unsigned long code, void *ss_handle) |
| 566 | { |
| 567 | int ret; |
| 568 | ret = sysmon_send_event(SYSMON_SS_MODEM, "adsp", code); |
| 569 | if (ret < 0) |
| 570 | pr_err("%s: sysmon_send_event failed (%d).", __func__, ret); |
| 571 | return NOTIFY_DONE; |
| 572 | } |
| 573 | |
| 574 | static struct notifier_block adsp_state_notifier_block = { |
| 575 | .notifier_call = adsp_state_notifier_fn, |
| 576 | }; |
| 577 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 578 | static irqreturn_t modem_wdog_bite_irq(int irq, void *dev_id) |
| 579 | { |
| 580 | struct mba_data *drv = dev_id; |
| 581 | if (drv->ignore_errors) |
| 582 | return IRQ_HANDLED; |
| 583 | pr_err("Watchdog bite received from modem software!\n"); |
| 584 | restart_modem(drv); |
| 585 | return IRQ_HANDLED; |
| 586 | } |
| 587 | |
| 588 | static int mss_start(const struct subsys_desc *desc) |
| 589 | { |
Stephen Boyd | e83a0a2 | 2012-06-29 13:51:27 -0700 | [diff] [blame] | 590 | int ret; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 591 | struct mba_data *drv = subsys_to_drv(desc); |
| 592 | |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 593 | if (!drv->is_loadable) |
Vikram Mulukutla | 1d958af | 2012-11-20 14:06:12 -0800 | [diff] [blame] | 594 | return 0; |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 595 | |
Stephen Boyd | e83a0a2 | 2012-06-29 13:51:27 -0700 | [diff] [blame] | 596 | ret = pil_boot(&drv->q6->desc); |
| 597 | if (ret) |
| 598 | return ret; |
| 599 | ret = pil_boot(&drv->desc); |
| 600 | if (ret) |
| 601 | pil_shutdown(&drv->q6->desc); |
| 602 | return ret; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 603 | } |
| 604 | |
| 605 | static void mss_stop(const struct subsys_desc *desc) |
| 606 | { |
| 607 | struct mba_data *drv = subsys_to_drv(desc); |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 608 | |
| 609 | if (!drv->is_loadable) |
| 610 | return; |
| 611 | |
Matt Wagantall | a72d03d | 2013-02-26 21:13:14 -0800 | [diff] [blame] | 612 | pil_shutdown(&drv->desc); |
Stephen Boyd | e83a0a2 | 2012-06-29 13:51:27 -0700 | [diff] [blame] | 613 | pil_shutdown(&drv->q6->desc); |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 614 | } |
| 615 | |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 616 | static int __devinit pil_subsys_init(struct mba_data *drv, |
| 617 | struct platform_device *pdev) |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 618 | { |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 619 | int irq, ret; |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 620 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 621 | irq = platform_get_irq(pdev, 0); |
| 622 | if (irq < 0) |
| 623 | return irq; |
| 624 | |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 625 | drv->subsys_desc.name = "modem"; |
| 626 | drv->subsys_desc.dev = &pdev->dev; |
| 627 | drv->subsys_desc.owner = THIS_MODULE; |
| 628 | drv->subsys_desc.shutdown = modem_shutdown; |
| 629 | drv->subsys_desc.powerup = modem_powerup; |
| 630 | drv->subsys_desc.ramdump = modem_ramdump; |
| 631 | drv->subsys_desc.crash_shutdown = modem_crash_shutdown; |
| 632 | drv->subsys_desc.start = mss_start; |
| 633 | drv->subsys_desc.stop = mss_stop; |
| 634 | |
| 635 | drv->subsys = subsys_register(&drv->subsys_desc); |
| 636 | if (IS_ERR(drv->subsys)) { |
| 637 | ret = PTR_ERR(drv->subsys); |
| 638 | goto err_subsys; |
| 639 | } |
| 640 | |
| 641 | drv->ramdump_dev = create_ramdump_device("modem", &pdev->dev); |
| 642 | if (!drv->ramdump_dev) { |
| 643 | pr_err("%s: Unable to create a modem ramdump device.\n", |
| 644 | __func__); |
| 645 | ret = -ENOMEM; |
| 646 | goto err_ramdump; |
| 647 | } |
| 648 | |
| 649 | drv->smem_ramdump_dev = create_ramdump_device("smem-modem", &pdev->dev); |
| 650 | if (!drv->smem_ramdump_dev) { |
| 651 | pr_err("%s: Unable to create an smem ramdump device.\n", |
| 652 | __func__); |
| 653 | ret = -ENOMEM; |
| 654 | goto err_ramdump_smem; |
| 655 | } |
| 656 | |
| 657 | ret = devm_request_irq(&pdev->dev, irq, modem_wdog_bite_irq, |
| 658 | IRQF_TRIGGER_RISING, "modem_wdog", drv); |
| 659 | if (ret < 0) { |
| 660 | dev_err(&pdev->dev, "Unable to request watchdog IRQ.\n"); |
| 661 | goto err_irq; |
| 662 | } |
| 663 | |
Seemanta Dutta | 6e58f54 | 2013-03-04 19:28:16 -0800 | [diff] [blame] | 664 | ret = devm_request_irq(&pdev->dev, drv->err_fatal_irq, |
| 665 | modem_err_fatal_intr_handler, |
| 666 | IRQF_TRIGGER_RISING, "pil-mss", drv); |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 667 | if (ret < 0) { |
Seemanta Dutta | 6e58f54 | 2013-03-04 19:28:16 -0800 | [diff] [blame] | 668 | dev_err(&pdev->dev, "Unable to register SMP2P err fatal handler!\n"); |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 669 | goto err_irq; |
| 670 | } |
| 671 | |
| 672 | drv->adsp_state_notifier = subsys_notif_register_notifier("adsp", |
| 673 | &adsp_state_notifier_block); |
| 674 | if (IS_ERR(drv->adsp_state_notifier)) { |
| 675 | ret = PTR_ERR(drv->adsp_state_notifier); |
| 676 | dev_err(&pdev->dev, "%s: Registration with the SSR notification driver failed (%d)", |
| 677 | __func__, ret); |
Seemanta Dutta | 6e58f54 | 2013-03-04 19:28:16 -0800 | [diff] [blame] | 678 | goto err_irq; |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 679 | } |
| 680 | |
| 681 | return 0; |
| 682 | |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 683 | err_irq: |
| 684 | destroy_ramdump_device(drv->smem_ramdump_dev); |
| 685 | err_ramdump_smem: |
| 686 | destroy_ramdump_device(drv->ramdump_dev); |
| 687 | err_ramdump: |
| 688 | subsys_unregister(drv->subsys); |
| 689 | err_subsys: |
| 690 | return ret; |
| 691 | } |
| 692 | |
| 693 | static int __devinit pil_mss_loadable_init(struct mba_data *drv, |
| 694 | struct platform_device *pdev) |
| 695 | { |
| 696 | struct q6v5_data *q6; |
| 697 | struct pil_desc *q6_desc, *mba_desc; |
| 698 | struct resource *res; |
| 699 | int ret; |
| 700 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 701 | q6 = pil_q6v5_init(pdev); |
| 702 | if (IS_ERR(q6)) |
| 703 | return PTR_ERR(q6); |
| 704 | drv->q6 = q6; |
| 705 | |
| 706 | q6_desc = &q6->desc; |
| 707 | q6_desc->ops = &pil_mss_ops; |
| 708 | q6_desc->owner = THIS_MODULE; |
| 709 | q6_desc->proxy_timeout = PROXY_TIMEOUT_MS; |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 710 | |
Patrick Daly | b830a3f | 2013-03-11 14:21:34 -0700 | [diff] [blame] | 711 | drv->self_auth = of_property_read_bool(pdev->dev.of_node, |
| 712 | "qcom,pil-self-auth"); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 713 | if (drv->self_auth) { |
Matt Wagantall | 1f16815 | 2012-09-25 13:26:47 -0700 | [diff] [blame] | 714 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 715 | "rmb_base"); |
Stephen Boyd | f8f8928 | 2012-07-16 18:05:48 -0700 | [diff] [blame] | 716 | drv->rmb_base = devm_request_and_ioremap(&pdev->dev, res); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 717 | if (!drv->rmb_base) |
| 718 | return -ENOMEM; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 719 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 720 | "metadata_base"); |
| 721 | if (res) { |
| 722 | drv->metadata_base = devm_ioremap(&pdev->dev, |
| 723 | res->start, resource_size(res)); |
| 724 | if (!drv->metadata_base) |
| 725 | return -ENOMEM; |
| 726 | drv->metadata_phys = res->start; |
| 727 | } |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 728 | } |
| 729 | |
Matt Wagantall | 1f16815 | 2012-09-25 13:26:47 -0700 | [diff] [blame] | 730 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "restart_reg"); |
Stephen Boyd | f8f8928 | 2012-07-16 18:05:48 -0700 | [diff] [blame] | 731 | q6->restart_reg = devm_request_and_ioremap(&pdev->dev, res); |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 732 | if (!q6->restart_reg) |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 733 | return -ENOMEM; |
| 734 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 735 | q6->vreg = devm_regulator_get(&pdev->dev, "vdd_mss"); |
| 736 | if (IS_ERR(q6->vreg)) |
| 737 | return PTR_ERR(q6->vreg); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 738 | |
Matt Wagantall | 70315fb | 2012-12-03 16:33:28 -0800 | [diff] [blame] | 739 | q6->vreg_mx = devm_regulator_get(&pdev->dev, "vdd_mx"); |
| 740 | if (IS_ERR(q6->vreg_mx)) |
| 741 | return PTR_ERR(q6->vreg_mx); |
| 742 | |
Vikram Mulukutla | c06e4de | 2013-03-13 15:58:28 -0700 | [diff] [blame] | 743 | ret = regulator_set_voltage(q6->vreg, VDD_MSS_UV, MAX_VDD_MSS_UV); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 744 | if (ret) |
| 745 | dev_err(&pdev->dev, "Failed to set regulator's voltage.\n"); |
| 746 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 747 | ret = regulator_set_optimum_mode(q6->vreg, 100000); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 748 | if (ret < 0) { |
| 749 | dev_err(&pdev->dev, "Failed to set regulator's mode.\n"); |
| 750 | return ret; |
| 751 | } |
| 752 | |
Patrick Daly | 11ca6af | 2013-03-03 17:07:28 -0800 | [diff] [blame] | 753 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 754 | "cxrail_bhs_reg"); |
| 755 | if (res) |
| 756 | q6->cxrail_bhs = devm_ioremap(&pdev->dev, res->start, |
| 757 | resource_size(res)); |
| 758 | |
| 759 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 760 | q6->ahb_clk = devm_clk_get(&pdev->dev, "iface_clk"); |
| 761 | if (IS_ERR(q6->ahb_clk)) |
| 762 | return PTR_ERR(q6->ahb_clk); |
Matt Wagantall | 8c2246d | 2012-08-12 17:08:04 -0700 | [diff] [blame] | 763 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 764 | q6->axi_clk = devm_clk_get(&pdev->dev, "bus_clk"); |
| 765 | if (IS_ERR(q6->axi_clk)) |
| 766 | return PTR_ERR(q6->axi_clk); |
Matt Wagantall | 8c2246d | 2012-08-12 17:08:04 -0700 | [diff] [blame] | 767 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 768 | q6->rom_clk = devm_clk_get(&pdev->dev, "mem_clk"); |
| 769 | if (IS_ERR(q6->rom_clk)) |
| 770 | return PTR_ERR(q6->rom_clk); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 771 | |
Stephen Boyd | e83a0a2 | 2012-06-29 13:51:27 -0700 | [diff] [blame] | 772 | ret = pil_desc_init(q6_desc); |
| 773 | if (ret) |
| 774 | return ret; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 775 | |
| 776 | mba_desc = &drv->desc; |
| 777 | mba_desc->name = "modem"; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 778 | mba_desc->dev = &pdev->dev; |
| 779 | mba_desc->ops = &pil_mba_ops; |
| 780 | mba_desc->owner = THIS_MODULE; |
| 781 | mba_desc->proxy_timeout = PROXY_TIMEOUT_MS; |
| 782 | |
Stephen Boyd | e83a0a2 | 2012-06-29 13:51:27 -0700 | [diff] [blame] | 783 | ret = pil_desc_init(mba_desc); |
| 784 | if (ret) |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 785 | goto err_mba_desc; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 786 | |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 787 | return 0; |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 788 | |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 789 | err_mba_desc: |
Stephen Boyd | e83a0a2 | 2012-06-29 13:51:27 -0700 | [diff] [blame] | 790 | pil_desc_release(q6_desc); |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 791 | return ret; |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 792 | |
| 793 | } |
| 794 | |
| 795 | static int __devinit pil_mss_driver_probe(struct platform_device *pdev) |
| 796 | { |
| 797 | struct mba_data *drv; |
Seemanta Dutta | 6e58f54 | 2013-03-04 19:28:16 -0800 | [diff] [blame] | 798 | int ret, err_fatal_gpio; |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 799 | |
| 800 | drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL); |
| 801 | if (!drv) |
| 802 | return -ENOMEM; |
| 803 | platform_set_drvdata(pdev, drv); |
| 804 | |
Vikram Mulukutla | 2d4f086 | 2012-11-16 11:57:34 -0800 | [diff] [blame] | 805 | drv->is_loadable = of_property_read_bool(pdev->dev.of_node, |
| 806 | "qcom,is-loadable"); |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 807 | if (drv->is_loadable) { |
| 808 | ret = pil_mss_loadable_init(drv, pdev); |
| 809 | if (ret) |
| 810 | return ret; |
| 811 | } |
| 812 | |
Seemanta Dutta | 6e58f54 | 2013-03-04 19:28:16 -0800 | [diff] [blame] | 813 | /* Get the IRQ from the GPIO for registering inbound handler */ |
| 814 | err_fatal_gpio = of_get_named_gpio(pdev->dev.of_node, |
| 815 | "qcom,gpio-err-fatal", 0); |
| 816 | if (err_fatal_gpio < 0) |
| 817 | return err_fatal_gpio; |
| 818 | |
| 819 | drv->err_fatal_irq = gpio_to_irq(err_fatal_gpio); |
| 820 | if (drv->err_fatal_irq < 0) |
| 821 | return drv->err_fatal_irq; |
| 822 | |
| 823 | /* Get the GPIO pin for writing the outbound bits: add more as needed */ |
| 824 | drv->force_stop_gpio = of_get_named_gpio(pdev->dev.of_node, |
| 825 | "qcom,gpio-force-stop", 0); |
| 826 | if (drv->force_stop_gpio < 0) |
| 827 | return drv->force_stop_gpio; |
| 828 | |
Vikram Mulukutla | 7dc2d4e | 2012-11-12 13:04:50 -0800 | [diff] [blame] | 829 | return pil_subsys_init(drv, pdev); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 830 | } |
| 831 | |
| 832 | static int __devexit pil_mss_driver_exit(struct platform_device *pdev) |
| 833 | { |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 834 | struct mba_data *drv = platform_get_drvdata(pdev); |
Vikram Mulukutla | 896d058 | 2012-10-17 16:57:46 -0700 | [diff] [blame] | 835 | |
| 836 | subsys_notif_unregister_notifier(drv->adsp_state_notifier, |
| 837 | &adsp_state_notifier_block); |
Stephen Boyd | 3da4fd0 | 2012-07-06 10:00:12 -0700 | [diff] [blame] | 838 | subsys_unregister(drv->subsys); |
| 839 | destroy_ramdump_device(drv->smem_ramdump_dev); |
| 840 | destroy_ramdump_device(drv->ramdump_dev); |
Stephen Boyd | e83a0a2 | 2012-06-29 13:51:27 -0700 | [diff] [blame] | 841 | pil_desc_release(&drv->desc); |
| 842 | pil_desc_release(&drv->q6->desc); |
Matt Wagantall | 4e2599e | 2012-03-21 22:31:35 -0700 | [diff] [blame] | 843 | return 0; |
| 844 | } |
| 845 | |
| 846 | static struct of_device_id mss_match_table[] = { |
| 847 | { .compatible = "qcom,pil-q6v5-mss" }, |
| 848 | {} |
| 849 | }; |
| 850 | |
| 851 | static struct platform_driver pil_mss_driver = { |
| 852 | .probe = pil_mss_driver_probe, |
| 853 | .remove = __devexit_p(pil_mss_driver_exit), |
| 854 | .driver = { |
| 855 | .name = "pil-q6v5-mss", |
| 856 | .of_match_table = mss_match_table, |
| 857 | .owner = THIS_MODULE, |
| 858 | }, |
| 859 | }; |
| 860 | |
| 861 | static int __init pil_mss_init(void) |
| 862 | { |
| 863 | return platform_driver_register(&pil_mss_driver); |
| 864 | } |
| 865 | module_init(pil_mss_init); |
| 866 | |
| 867 | static void __exit pil_mss_exit(void) |
| 868 | { |
| 869 | platform_driver_unregister(&pil_mss_driver); |
| 870 | } |
| 871 | module_exit(pil_mss_exit); |
| 872 | |
| 873 | MODULE_DESCRIPTION("Support for booting modem subsystems with QDSP6v5 Hexagon processors"); |
| 874 | MODULE_LICENSE("GPL v2"); |