Kai Liu | 4cf2139 | 2017-12-15 21:14:08 +0800 | [diff] [blame] | 1 | /* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
| 13 | #define pr_fmt(fmt) "cnss_sdio:%s:%d:: " fmt, __func__, __LINE__ |
| 14 | |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/module.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/of.h> |
| 19 | #include <linux/platform_device.h> |
| 20 | #include <linux/regulator/consumer.h> |
| 21 | #include <linux/delay.h> |
| 22 | #include <linux/err.h> |
| 23 | #include <linux/slab.h> |
| 24 | #include <linux/mmc/sdio_func.h> |
| 25 | #include <linux/mmc/sdio_ids.h> |
| 26 | #include <linux/mmc/card.h> |
| 27 | #include <linux/mmc/host.h> |
| 28 | #include <linux/io.h> |
| 29 | #include <soc/qcom/subsystem_restart.h> |
| 30 | #include <soc/qcom/subsystem_notif.h> |
| 31 | #include <soc/qcom/ramdump.h> |
| 32 | #include <soc/qcom/memory_dump.h> |
| 33 | #include <net/cnss.h> |
| 34 | #include "cnss_common.h" |
| 35 | #include <linux/pm_qos.h> |
| 36 | #include <linux/msm-bus.h> |
| 37 | #include <linux/msm-bus-board.h> |
| 38 | #include <linux/gpio.h> |
| 39 | #include <linux/of_gpio.h> |
| 40 | |
| 41 | #define WLAN_VREG_NAME "vdd-wlan" |
| 42 | #define WLAN_VREG_DSRC_NAME "vdd-wlan-dsrc" |
| 43 | #define WLAN_VREG_IO_NAME "vdd-wlan-io" |
| 44 | #define WLAN_VREG_XTAL_NAME "vdd-wlan-xtal" |
| 45 | #define WLAN_GPIO_CAPTSF_NAME "qcom,cap-tsf-gpio" |
| 46 | |
| 47 | #define WLAN_VREG_IO_MAX 1800000 |
| 48 | #define WLAN_VREG_IO_MIN 1800000 |
| 49 | #define WLAN_VREG_XTAL_MAX 1800000 |
| 50 | #define WLAN_VREG_XTAL_MIN 1800000 |
| 51 | #define POWER_ON_DELAY 4 |
| 52 | |
| 53 | /* Values for Dynamic Ramdump Collection*/ |
| 54 | #define CNSS_DUMP_FORMAT_VER 0x11 |
| 55 | #define CNSS_DUMP_MAGIC_VER_V2 0x42445953 |
| 56 | #define CNSS_DUMP_NAME "CNSS_WLAN_SDIO" |
| 57 | #define CNSS_PINCTRL_SLEEP_STATE "sleep" |
| 58 | #define CNSS_PINCTRL_ACTIVE_STATE "active" |
| 59 | |
| 60 | #define CNSS_HW_SLEEP 0 |
| 61 | #define CNSS_HW_ACTIVE 1 |
| 62 | |
| 63 | struct cnss_sdio_regulator { |
| 64 | struct regulator *wlan_io; |
| 65 | struct regulator *wlan_xtal; |
| 66 | struct regulator *wlan_vreg; |
| 67 | struct regulator *wlan_vreg_dsrc; |
| 68 | }; |
| 69 | |
| 70 | struct cnss_sdio_info { |
| 71 | struct cnss_sdio_wlan_driver *wdrv; |
| 72 | struct sdio_func *func; |
| 73 | struct mmc_card *card; |
| 74 | struct mmc_host *host; |
| 75 | struct device *dev; |
| 76 | const struct sdio_device_id *id; |
| 77 | bool skip_wlan_en_toggle; |
| 78 | bool cnss_hw_state; |
| 79 | struct cnss_cap_tsf_info cap_tsf_info; |
| 80 | }; |
| 81 | |
| 82 | struct cnss_ssr_info { |
| 83 | struct subsys_device *subsys; |
| 84 | struct subsys_desc subsysdesc; |
| 85 | void *subsys_handle; |
| 86 | struct ramdump_device *ramdump_dev; |
| 87 | unsigned long ramdump_size; |
| 88 | void *ramdump_addr; |
| 89 | phys_addr_t ramdump_phys; |
| 90 | struct msm_dump_data dump_data; |
| 91 | bool ramdump_dynamic; |
| 92 | char subsys_name[10]; |
| 93 | }; |
| 94 | |
| 95 | struct cnss_wlan_pinctrl_info { |
| 96 | bool is_antenna_shared; |
| 97 | struct pinctrl *pinctrl; |
| 98 | struct pinctrl_state *sleep; |
| 99 | struct pinctrl_state *active; |
| 100 | }; |
| 101 | |
| 102 | struct cnss_sdio_bus_bandwidth { |
| 103 | struct msm_bus_scale_pdata *bus_scale_table; |
| 104 | u32 bus_client; |
| 105 | int current_bandwidth_vote; |
| 106 | }; |
| 107 | |
| 108 | static struct cnss_sdio_data { |
| 109 | struct cnss_sdio_regulator regulator; |
| 110 | struct platform_device *pdev; |
| 111 | struct cnss_sdio_info cnss_sdio_info; |
| 112 | struct cnss_ssr_info ssr_info; |
| 113 | struct pm_qos_request qos_request; |
| 114 | struct cnss_wlan_pinctrl_info pinctrl_info; |
| 115 | struct cnss_sdio_bus_bandwidth bus_bandwidth; |
| 116 | struct cnss_dev_platform_ops platform_ops; |
| 117 | } *cnss_pdata; |
| 118 | |
| 119 | #define WLAN_RECOVERY_DELAY 1 |
| 120 | /* cnss sdio subsytem device name, required property */ |
| 121 | #define CNSS_SUBSYS_NAME_KEY "subsys-name" |
| 122 | |
| 123 | /* SDIO manufacturer ID and Codes */ |
| 124 | #define MANUFACTURER_ID_AR6320_BASE 0x500 |
| 125 | #define MANUFACTURER_ID_QCA9377_BASE 0x700 |
gaolez | 98d4093 | 2018-04-23 18:25:12 +0800 | [diff] [blame^] | 126 | #define MANUFACTURER_ID_QCA9379_BASE 0x800 |
Kai Liu | 4cf2139 | 2017-12-15 21:14:08 +0800 | [diff] [blame] | 127 | #define MANUFACTURER_CODE 0x271 |
| 128 | |
| 129 | static const struct sdio_device_id ar6k_id_table[] = { |
| 130 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0x0))}, |
| 131 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0x1))}, |
| 132 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0x2))}, |
| 133 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0x3))}, |
| 134 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0x4))}, |
| 135 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0x5))}, |
| 136 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0x6))}, |
| 137 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0x7))}, |
| 138 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0x8))}, |
| 139 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0x9))}, |
| 140 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0xA))}, |
| 141 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0xB))}, |
| 142 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0xC))}, |
| 143 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0xD))}, |
| 144 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0xE))}, |
| 145 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6320_BASE | 0xF))}, |
| 146 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0x0))}, |
| 147 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0x1))}, |
| 148 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0x2))}, |
| 149 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0x3))}, |
| 150 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0x4))}, |
| 151 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0x5))}, |
| 152 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0x6))}, |
| 153 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0x7))}, |
| 154 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0x8))}, |
| 155 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0x9))}, |
| 156 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0xA))}, |
| 157 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0xB))}, |
| 158 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0xC))}, |
| 159 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0xD))}, |
| 160 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0xE))}, |
| 161 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9377_BASE | 0xF))}, |
gaolez | 98d4093 | 2018-04-23 18:25:12 +0800 | [diff] [blame^] | 162 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0x0))}, |
| 163 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0x1))}, |
| 164 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0x2))}, |
| 165 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0x3))}, |
| 166 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0x4))}, |
| 167 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0x5))}, |
| 168 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0x6))}, |
| 169 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0x7))}, |
| 170 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0x8))}, |
| 171 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0x9))}, |
| 172 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0xA))}, |
| 173 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0xB))}, |
| 174 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0xC))}, |
| 175 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0xD))}, |
| 176 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0xE))}, |
| 177 | {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_QCA9379_BASE | 0xF))}, |
Kai Liu | 4cf2139 | 2017-12-15 21:14:08 +0800 | [diff] [blame] | 178 | {}, |
| 179 | }; |
| 180 | MODULE_DEVICE_TABLE(sdio, ar6k_id_table); |
| 181 | |
| 182 | void cnss_sdio_request_pm_qos_type(int latency_type, u32 qos_val) |
| 183 | { |
| 184 | if (!cnss_pdata) |
| 185 | return; |
| 186 | |
| 187 | pr_debug("PM QoS value: %d\n", qos_val); |
| 188 | pm_qos_add_request(&cnss_pdata->qos_request, latency_type, qos_val); |
| 189 | } |
| 190 | EXPORT_SYMBOL(cnss_sdio_request_pm_qos_type); |
| 191 | |
| 192 | int cnss_sdio_request_bus_bandwidth(int bandwidth) |
| 193 | { |
| 194 | int ret; |
| 195 | struct cnss_sdio_bus_bandwidth *bus_bandwidth; |
| 196 | |
| 197 | if (!cnss_pdata) |
| 198 | return -ENODEV; |
| 199 | |
| 200 | bus_bandwidth = &cnss_pdata->bus_bandwidth; |
| 201 | if (!bus_bandwidth->bus_client) |
| 202 | return -EINVAL; |
| 203 | |
| 204 | switch (bandwidth) { |
| 205 | case CNSS_BUS_WIDTH_NONE: |
| 206 | case CNSS_BUS_WIDTH_LOW: |
| 207 | case CNSS_BUS_WIDTH_MEDIUM: |
| 208 | case CNSS_BUS_WIDTH_HIGH: |
| 209 | ret = msm_bus_scale_client_update_request( |
| 210 | bus_bandwidth->bus_client, bandwidth); |
| 211 | if (!ret) { |
| 212 | bus_bandwidth->current_bandwidth_vote = bandwidth; |
| 213 | } else { |
| 214 | pr_debug( |
| 215 | "could not set bus bandwidth %d, ret = %d\n", |
| 216 | bandwidth, ret); |
| 217 | } |
| 218 | break; |
| 219 | default: |
| 220 | pr_debug("Invalid request %d\n", bandwidth); |
| 221 | ret = -EINVAL; |
| 222 | } |
| 223 | |
| 224 | return ret; |
| 225 | } |
| 226 | |
| 227 | void cnss_sdio_request_pm_qos(u32 qos_val) |
| 228 | { |
| 229 | if (!cnss_pdata) |
| 230 | return; |
| 231 | |
| 232 | pr_debug("PM QoS value: %d\n", qos_val); |
| 233 | pm_qos_add_request( |
| 234 | &cnss_pdata->qos_request, |
| 235 | PM_QOS_CPU_DMA_LATENCY, qos_val); |
| 236 | } |
| 237 | EXPORT_SYMBOL(cnss_sdio_request_pm_qos); |
| 238 | |
| 239 | void cnss_sdio_remove_pm_qos(void) |
| 240 | { |
| 241 | if (!cnss_pdata) |
| 242 | return; |
| 243 | |
| 244 | pm_qos_remove_request(&cnss_pdata->qos_request); |
| 245 | pr_debug("PM QoS removed\n"); |
| 246 | } |
| 247 | EXPORT_SYMBOL(cnss_sdio_remove_pm_qos); |
| 248 | |
| 249 | static int cnss_put_hw_resources(struct device *dev) |
| 250 | { |
| 251 | int ret = -EINVAL; |
| 252 | struct cnss_sdio_info *info; |
| 253 | struct mmc_host *host; |
| 254 | |
| 255 | if (!cnss_pdata) |
| 256 | return ret; |
| 257 | |
| 258 | info = &cnss_pdata->cnss_sdio_info; |
| 259 | |
| 260 | if (info->skip_wlan_en_toggle) { |
| 261 | pr_debug("HW doesn't support wlan toggling\n"); |
| 262 | return 0; |
| 263 | } |
| 264 | |
| 265 | if (info->cnss_hw_state == CNSS_HW_SLEEP) { |
| 266 | pr_debug("HW resources are already released\n"); |
| 267 | return 0; |
| 268 | } |
| 269 | |
| 270 | host = info->host; |
| 271 | |
| 272 | if (!host) { |
| 273 | pr_err("MMC host is invalid\n"); |
| 274 | return ret; |
| 275 | } |
| 276 | |
| 277 | if (!cnss_pdata->regulator.wlan_vreg) { |
| 278 | pr_debug("wlan_vreg regulator is invalid\n"); |
| 279 | return 0; |
| 280 | } |
| 281 | |
| 282 | ret = mmc_power_save_host(host); |
| 283 | if (ret) { |
| 284 | pr_err("Failed to Power Save Host err:%d\n", |
| 285 | ret); |
| 286 | return ret; |
| 287 | } |
| 288 | |
| 289 | regulator_disable(cnss_pdata->regulator.wlan_vreg); |
| 290 | info->cnss_hw_state = CNSS_HW_SLEEP; |
| 291 | |
| 292 | return ret; |
| 293 | } |
| 294 | |
| 295 | static int cnss_get_hw_resources(struct device *dev) |
| 296 | { |
| 297 | int ret = -EINVAL; |
| 298 | struct mmc_host *host; |
| 299 | struct cnss_sdio_info *info; |
| 300 | |
| 301 | if (!cnss_pdata) |
| 302 | return ret; |
| 303 | |
| 304 | info = &cnss_pdata->cnss_sdio_info; |
| 305 | |
| 306 | if (info->skip_wlan_en_toggle) { |
| 307 | pr_debug("HW doesn't support wlan toggling\n"); |
| 308 | return 0; |
| 309 | } |
| 310 | |
| 311 | if (info->cnss_hw_state == CNSS_HW_ACTIVE) { |
| 312 | pr_debug("HW resources are already active\n"); |
| 313 | return 0; |
| 314 | } |
| 315 | |
| 316 | host = info->host; |
| 317 | |
| 318 | if (!host) { |
| 319 | pr_err("MMC Host is Invalid; Enumeration Failed\n"); |
| 320 | return ret; |
| 321 | } |
| 322 | |
| 323 | if (!cnss_pdata->regulator.wlan_vreg) { |
| 324 | pr_debug("wlan_vreg regulator is invalid\n"); |
| 325 | return 0; |
| 326 | } |
| 327 | |
| 328 | ret = regulator_enable(cnss_pdata->regulator.wlan_vreg); |
| 329 | if (ret) { |
| 330 | pr_err("Failed to enable wlan vreg\n"); |
| 331 | return ret; |
| 332 | } |
| 333 | |
| 334 | ret = mmc_power_restore_host(host); |
| 335 | if (ret) { |
| 336 | pr_err("Failed to restore host power ret:%d\n", |
| 337 | ret); |
| 338 | regulator_disable(cnss_pdata->regulator.wlan_vreg); |
| 339 | return ret; |
| 340 | } |
| 341 | |
| 342 | info->cnss_hw_state = CNSS_HW_ACTIVE; |
| 343 | return ret; |
| 344 | } |
| 345 | |
| 346 | static int cnss_sdio_shutdown(const struct subsys_desc *subsys, bool force_stop) |
| 347 | { |
| 348 | struct cnss_sdio_info *cnss_info; |
| 349 | struct cnss_sdio_wlan_driver *wdrv; |
| 350 | int ret = 0; |
| 351 | |
| 352 | if (!cnss_pdata) |
| 353 | return -ENODEV; |
| 354 | |
| 355 | cnss_info = &cnss_pdata->cnss_sdio_info; |
| 356 | wdrv = cnss_info->wdrv; |
| 357 | if (!wdrv) |
| 358 | return 0; |
| 359 | if (!wdrv->shutdown) |
| 360 | return 0; |
| 361 | |
| 362 | wdrv->shutdown(cnss_info->func); |
| 363 | ret = cnss_put_hw_resources(cnss_info->dev); |
| 364 | |
| 365 | if (ret) |
| 366 | pr_err("Failed to put hw resources\n"); |
| 367 | |
| 368 | return ret; |
| 369 | } |
| 370 | |
| 371 | static int cnss_sdio_powerup(const struct subsys_desc *subsys) |
| 372 | { |
| 373 | struct cnss_sdio_info *cnss_info; |
| 374 | struct cnss_sdio_wlan_driver *wdrv; |
| 375 | int ret = 0; |
| 376 | |
| 377 | if (!cnss_pdata) |
| 378 | return -ENODEV; |
| 379 | |
| 380 | cnss_info = &cnss_pdata->cnss_sdio_info; |
| 381 | wdrv = cnss_info->wdrv; |
| 382 | |
| 383 | if (!wdrv) |
| 384 | return 0; |
| 385 | |
| 386 | if (!wdrv->reinit) |
| 387 | return 0; |
| 388 | |
| 389 | ret = cnss_get_hw_resources(cnss_info->dev); |
| 390 | if (ret) { |
| 391 | pr_err("Failed to power up HW\n"); |
| 392 | return ret; |
| 393 | } |
| 394 | |
| 395 | ret = wdrv->reinit(cnss_info->func, cnss_info->id); |
| 396 | if (ret) |
| 397 | pr_err("wlan reinit error=%d\n", ret); |
| 398 | |
| 399 | return ret; |
| 400 | } |
| 401 | |
| 402 | static void cnss_sdio_crash_shutdown(const struct subsys_desc *subsys) |
| 403 | { |
| 404 | struct cnss_sdio_info *cnss_info; |
| 405 | struct cnss_sdio_wlan_driver *wdrv; |
| 406 | |
| 407 | if (!cnss_pdata) |
| 408 | return; |
| 409 | |
| 410 | cnss_info = &cnss_pdata->cnss_sdio_info; |
| 411 | wdrv = cnss_info->wdrv; |
| 412 | if (wdrv && wdrv->crash_shutdown) |
| 413 | wdrv->crash_shutdown(cnss_info->func); |
| 414 | } |
| 415 | |
| 416 | static int cnss_sdio_ramdump(int enable, const struct subsys_desc *subsys) |
| 417 | { |
| 418 | struct cnss_ssr_info *ssr_info; |
| 419 | struct ramdump_segment segment; |
| 420 | int ret; |
| 421 | |
| 422 | if (!cnss_pdata) |
| 423 | return -ENODEV; |
| 424 | |
| 425 | if (!cnss_pdata->ssr_info.ramdump_size) |
| 426 | return -ENOENT; |
| 427 | |
| 428 | if (!enable) |
| 429 | return 0; |
| 430 | |
| 431 | ssr_info = &cnss_pdata->ssr_info; |
| 432 | |
| 433 | memset(&segment, 0, sizeof(segment)); |
| 434 | segment.v_address = ssr_info->ramdump_addr; |
| 435 | segment.size = ssr_info->ramdump_size; |
| 436 | ret = do_ramdump(ssr_info->ramdump_dev, &segment, 1); |
| 437 | if (ret) |
| 438 | pr_err("do_ramdump failed error=%d\n", ret); |
| 439 | return ret; |
| 440 | } |
| 441 | |
| 442 | static int cnss_subsys_init(void) |
| 443 | { |
| 444 | struct cnss_ssr_info *ssr_info; |
| 445 | int ret = 0; |
| 446 | |
| 447 | if (!cnss_pdata) |
| 448 | return -ENODEV; |
| 449 | |
| 450 | ssr_info = &cnss_pdata->ssr_info; |
| 451 | ssr_info->subsysdesc.name = ssr_info->subsys_name; |
| 452 | ssr_info->subsysdesc.owner = THIS_MODULE; |
| 453 | ssr_info->subsysdesc.shutdown = cnss_sdio_shutdown; |
| 454 | ssr_info->subsysdesc.powerup = cnss_sdio_powerup; |
| 455 | ssr_info->subsysdesc.ramdump = cnss_sdio_ramdump; |
| 456 | ssr_info->subsysdesc.crash_shutdown = cnss_sdio_crash_shutdown; |
| 457 | ssr_info->subsysdesc.dev = &cnss_pdata->pdev->dev; |
| 458 | ssr_info->subsys = subsys_register(&ssr_info->subsysdesc); |
| 459 | if (IS_ERR(ssr_info->subsys)) { |
| 460 | ret = PTR_ERR(ssr_info->subsys); |
| 461 | ssr_info->subsys = NULL; |
| 462 | dev_err(&cnss_pdata->pdev->dev, "Failed to subsys_register error=%d\n", |
| 463 | ret); |
| 464 | goto err_subsys_reg; |
| 465 | } |
| 466 | ssr_info->subsys_handle = subsystem_get(ssr_info->subsysdesc.name); |
| 467 | if (IS_ERR(ssr_info->subsys_handle)) { |
| 468 | ret = PTR_ERR(ssr_info->subsys_handle); |
| 469 | ssr_info->subsys_handle = NULL; |
| 470 | dev_err(&cnss_pdata->pdev->dev, "Failed to subsystem_get error=%d\n", |
| 471 | ret); |
| 472 | goto err_subsys_get; |
| 473 | } |
| 474 | return 0; |
| 475 | err_subsys_get: |
| 476 | subsys_unregister(ssr_info->subsys); |
| 477 | ssr_info->subsys = NULL; |
| 478 | err_subsys_reg: |
| 479 | return ret; |
| 480 | } |
| 481 | |
| 482 | static void cnss_subsys_exit(void) |
| 483 | { |
| 484 | struct cnss_ssr_info *ssr_info; |
| 485 | |
| 486 | if (!cnss_pdata) |
| 487 | return; |
| 488 | |
| 489 | ssr_info = &cnss_pdata->ssr_info; |
| 490 | if (ssr_info->subsys_handle) |
| 491 | subsystem_put(ssr_info->subsys_handle); |
| 492 | ssr_info->subsys_handle = NULL; |
| 493 | if (ssr_info->subsys) |
| 494 | subsys_unregister(ssr_info->subsys); |
| 495 | ssr_info->subsys = NULL; |
| 496 | } |
| 497 | |
| 498 | static int cnss_configure_dump_table(struct cnss_ssr_info *ssr_info) |
| 499 | { |
| 500 | struct msm_dump_entry dump_entry; |
| 501 | int ret; |
| 502 | |
| 503 | ssr_info->dump_data.addr = ssr_info->ramdump_phys; |
| 504 | ssr_info->dump_data.len = ssr_info->ramdump_size; |
| 505 | ssr_info->dump_data.version = CNSS_DUMP_FORMAT_VER; |
| 506 | ssr_info->dump_data.magic = CNSS_DUMP_MAGIC_VER_V2; |
| 507 | strlcpy(ssr_info->dump_data.name, CNSS_DUMP_NAME, |
| 508 | sizeof(ssr_info->dump_data.name)); |
| 509 | |
| 510 | dump_entry.id = MSM_DUMP_DATA_CNSS_WLAN; |
| 511 | dump_entry.addr = virt_to_phys(&ssr_info->dump_data); |
| 512 | |
| 513 | ret = msm_dump_data_register(MSM_DUMP_TABLE_APPS, &dump_entry); |
| 514 | if (ret) |
| 515 | pr_err("Dump table setup failed: %d\n", ret); |
| 516 | |
| 517 | return ret; |
| 518 | } |
| 519 | |
| 520 | static int cnss_configure_ramdump(void) |
| 521 | { |
| 522 | struct cnss_ssr_info *ssr_info; |
| 523 | int ret = 0; |
| 524 | struct resource *res; |
| 525 | const char *name; |
| 526 | u32 ramdump_size = 0; |
| 527 | struct device *dev; |
| 528 | |
| 529 | if (!cnss_pdata) |
| 530 | return -ENODEV; |
| 531 | |
| 532 | dev = &cnss_pdata->pdev->dev; |
| 533 | |
| 534 | ssr_info = &cnss_pdata->ssr_info; |
| 535 | |
| 536 | ret = of_property_read_string(dev->of_node, CNSS_SUBSYS_NAME_KEY, |
| 537 | &name); |
| 538 | if (ret) { |
| 539 | pr_err("cnss missing DT key '%s'\n", |
| 540 | CNSS_SUBSYS_NAME_KEY); |
| 541 | ret = -ENODEV; |
| 542 | goto err_subsys_name_query; |
| 543 | } |
| 544 | |
| 545 | strlcpy(ssr_info->subsys_name, name, sizeof(ssr_info->subsys_name)); |
| 546 | |
| 547 | if (of_property_read_u32(dev->of_node, "qcom,wlan-ramdump-dynamic", |
| 548 | &ramdump_size) == 0) { |
| 549 | ssr_info->ramdump_addr = dma_alloc_coherent(dev, ramdump_size, |
| 550 | &ssr_info->ramdump_phys, |
| 551 | GFP_KERNEL); |
| 552 | if (ssr_info->ramdump_addr) |
| 553 | ssr_info->ramdump_size = ramdump_size; |
| 554 | ssr_info->ramdump_dynamic = true; |
| 555 | } else { |
| 556 | res = platform_get_resource_byname(cnss_pdata->pdev, |
| 557 | IORESOURCE_MEM, "ramdump"); |
| 558 | if (res) { |
| 559 | ssr_info->ramdump_phys = res->start; |
| 560 | ramdump_size = resource_size(res); |
| 561 | ssr_info->ramdump_addr = ioremap(ssr_info->ramdump_phys, |
| 562 | ramdump_size); |
| 563 | if (ssr_info->ramdump_addr) |
| 564 | ssr_info->ramdump_size = ramdump_size; |
| 565 | ssr_info->ramdump_dynamic = false; |
| 566 | } |
| 567 | } |
| 568 | |
| 569 | pr_info("ramdump addr: %p, phys: %pa subsys:'%s'\n", |
| 570 | ssr_info->ramdump_addr, &ssr_info->ramdump_phys, |
| 571 | ssr_info->subsys_name); |
| 572 | |
| 573 | if (ssr_info->ramdump_size == 0) { |
| 574 | pr_info("CNSS ramdump will not be collected\n"); |
| 575 | return 0; |
| 576 | } |
| 577 | |
| 578 | if (ssr_info->ramdump_dynamic) { |
| 579 | ret = cnss_configure_dump_table(ssr_info); |
| 580 | if (ret) |
| 581 | goto err_configure_dump_table; |
| 582 | } |
| 583 | |
| 584 | ssr_info->ramdump_dev = create_ramdump_device(ssr_info->subsys_name, |
| 585 | dev); |
| 586 | if (!ssr_info->ramdump_dev) { |
| 587 | ret = -ENOMEM; |
| 588 | pr_err("ramdump dev create failed: error=%d\n", |
| 589 | ret); |
| 590 | goto err_configure_dump_table; |
| 591 | } |
| 592 | |
| 593 | return 0; |
| 594 | |
| 595 | err_configure_dump_table: |
| 596 | if (ssr_info->ramdump_dynamic) |
| 597 | dma_free_coherent(dev, ssr_info->ramdump_size, |
| 598 | ssr_info->ramdump_addr, |
| 599 | ssr_info->ramdump_phys); |
| 600 | else |
| 601 | iounmap(ssr_info->ramdump_addr); |
| 602 | |
| 603 | ssr_info->ramdump_addr = NULL; |
| 604 | ssr_info->ramdump_size = 0; |
| 605 | err_subsys_name_query: |
| 606 | return ret; |
| 607 | } |
| 608 | |
| 609 | static void cnss_ramdump_cleanup(void) |
| 610 | { |
| 611 | struct cnss_ssr_info *ssr_info; |
| 612 | struct device *dev; |
| 613 | |
| 614 | if (!cnss_pdata) |
| 615 | return; |
| 616 | |
| 617 | dev = &cnss_pdata->pdev->dev; |
| 618 | ssr_info = &cnss_pdata->ssr_info; |
| 619 | if (ssr_info->ramdump_addr) { |
| 620 | if (ssr_info->ramdump_dynamic) |
| 621 | dma_free_coherent(dev, ssr_info->ramdump_size, |
| 622 | ssr_info->ramdump_addr, |
| 623 | ssr_info->ramdump_phys); |
| 624 | else |
| 625 | iounmap(ssr_info->ramdump_addr); |
| 626 | } |
| 627 | |
| 628 | ssr_info->ramdump_addr = NULL; |
| 629 | if (ssr_info->ramdump_dev) |
| 630 | destroy_ramdump_device(ssr_info->ramdump_dev); |
| 631 | ssr_info->ramdump_dev = NULL; |
| 632 | } |
| 633 | |
| 634 | void *cnss_sdio_get_virt_ramdump_mem(unsigned long *size) |
| 635 | { |
| 636 | if (!cnss_pdata || !cnss_pdata->pdev) |
| 637 | return NULL; |
| 638 | |
| 639 | *size = cnss_pdata->ssr_info.ramdump_size; |
| 640 | |
| 641 | return cnss_pdata->ssr_info.ramdump_addr; |
| 642 | } |
| 643 | |
| 644 | void cnss_sdio_device_self_recovery(void) |
| 645 | { |
| 646 | cnss_sdio_shutdown(NULL, false); |
| 647 | msleep(WLAN_RECOVERY_DELAY); |
| 648 | cnss_sdio_powerup(NULL); |
| 649 | } |
| 650 | |
| 651 | void cnss_sdio_device_crashed(void) |
| 652 | { |
| 653 | struct cnss_ssr_info *ssr_info; |
| 654 | |
| 655 | if (!cnss_pdata) |
| 656 | return; |
| 657 | ssr_info = &cnss_pdata->ssr_info; |
| 658 | if (ssr_info->subsys) { |
| 659 | subsys_set_crash_status(ssr_info->subsys, true); |
| 660 | subsystem_restart_dev(ssr_info->subsys); |
| 661 | } |
| 662 | } |
| 663 | |
| 664 | static void cnss_sdio_recovery_work_handler(struct work_struct *recovery) |
| 665 | { |
| 666 | cnss_sdio_device_self_recovery(); |
| 667 | } |
| 668 | |
| 669 | DECLARE_WORK(cnss_sdio_recovery_work, cnss_sdio_recovery_work_handler); |
| 670 | |
| 671 | void cnss_sdio_schedule_recovery_work(void) |
| 672 | { |
| 673 | schedule_work(&cnss_sdio_recovery_work); |
| 674 | } |
| 675 | |
| 676 | /** |
| 677 | * cnss_get_restart_level() - cnss get restart level API |
| 678 | * |
| 679 | * Wlan sdio function driver uses this API to get the current |
| 680 | * subsystem restart level. |
| 681 | * |
| 682 | * Return: CNSS_RESET_SOC - "SYSTEM", restart system |
| 683 | * CNSS_RESET_SUBSYS_COUPLED - "RELATED",restart subsystem |
| 684 | */ |
| 685 | int cnss_get_restart_level(void) |
| 686 | { |
| 687 | struct cnss_ssr_info *ssr_info; |
| 688 | int level; |
| 689 | |
| 690 | if (!cnss_pdata) |
| 691 | return CNSS_RESET_SOC; |
| 692 | ssr_info = &cnss_pdata->ssr_info; |
| 693 | if (!ssr_info->subsys) |
| 694 | return CNSS_RESET_SOC; |
| 695 | level = subsys_get_restart_level(ssr_info->subsys); |
| 696 | switch (level) { |
| 697 | case RESET_SOC: |
| 698 | return CNSS_RESET_SOC; |
| 699 | case RESET_SUBSYS_COUPLED: |
| 700 | return CNSS_RESET_SUBSYS_COUPLED; |
| 701 | default: |
| 702 | return CNSS_RESET_SOC; |
| 703 | } |
| 704 | } |
| 705 | EXPORT_SYMBOL(cnss_get_restart_level); |
| 706 | |
| 707 | static inline int cnss_get_tsf_cap_irq(struct device *dev) |
| 708 | { |
| 709 | int irq = -EINVAL; |
| 710 | int gpio; |
| 711 | |
| 712 | if (!dev) |
| 713 | return -ENODEV; |
| 714 | |
| 715 | gpio = of_get_named_gpio(dev->of_node, WLAN_GPIO_CAPTSF_NAME, 0); |
| 716 | if (gpio >= 0) |
| 717 | irq = gpio_to_irq(gpio); |
| 718 | |
| 719 | return irq; |
| 720 | } |
| 721 | |
| 722 | static int cnss_sdio_register_tsf_captured_handler(irq_handler_t handler, |
| 723 | void *ctx) |
| 724 | { |
| 725 | struct cnss_cap_tsf_info *tsf_info; |
| 726 | |
| 727 | if (!cnss_pdata) |
| 728 | return -ENODEV; |
| 729 | |
| 730 | tsf_info = &cnss_pdata->cnss_sdio_info.cap_tsf_info; |
| 731 | if (tsf_info->irq_num < 0) |
| 732 | return -ENOTSUPP; |
| 733 | |
| 734 | tsf_info->irq_handler = handler; |
| 735 | tsf_info->context = ctx; |
| 736 | return 0; |
| 737 | } |
| 738 | |
| 739 | static int cnss_sdio_unregister_tsf_captured_handler(void *ctx) |
| 740 | { |
| 741 | struct cnss_cap_tsf_info *tsf_info; |
| 742 | |
| 743 | if (!cnss_pdata) |
| 744 | return -ENODEV; |
| 745 | |
| 746 | tsf_info = &cnss_pdata->cnss_sdio_info.cap_tsf_info; |
| 747 | if (tsf_info->irq_num < 0) |
| 748 | return -ENOTSUPP; |
| 749 | |
| 750 | if (ctx == tsf_info->context) { |
| 751 | tsf_info->irq_handler = NULL; |
| 752 | tsf_info->context = NULL; |
| 753 | } |
| 754 | return 0; |
| 755 | } |
| 756 | |
| 757 | static irqreturn_t cnss_sdio_tsf_captured_handler(int irq, void *ctx) |
| 758 | { |
| 759 | struct cnss_cap_tsf_info *tsf_info; |
| 760 | |
| 761 | if (!cnss_pdata) |
| 762 | return IRQ_HANDLED; |
| 763 | |
| 764 | tsf_info = &cnss_pdata->cnss_sdio_info.cap_tsf_info; |
| 765 | if (tsf_info->irq_num < 0 || tsf_info->irq_num != irq || |
| 766 | !tsf_info->irq_handler || !tsf_info->context) |
| 767 | return IRQ_HANDLED; |
| 768 | |
| 769 | return tsf_info->irq_handler(irq, tsf_info->context); |
| 770 | } |
| 771 | |
| 772 | static void cnss_sdio_tsf_init(struct device *dev, |
| 773 | struct cnss_cap_tsf_info *tsf_info) |
| 774 | { |
| 775 | int ret, irq; |
| 776 | |
| 777 | tsf_info->irq_num = -EINVAL; |
| 778 | tsf_info->irq_handler = NULL; |
| 779 | tsf_info->context = NULL; |
| 780 | |
| 781 | irq = cnss_get_tsf_cap_irq(dev); |
| 782 | if (irq < 0) { |
| 783 | dev_err(dev, "%s: fail to get irq: %d\n", __func__, irq); |
| 784 | return; |
| 785 | } |
| 786 | |
| 787 | ret = request_irq(irq, cnss_sdio_tsf_captured_handler, |
| 788 | IRQF_SHARED | IRQF_TRIGGER_RISING, dev_name(dev), |
| 789 | (void *)tsf_info); |
| 790 | dev_err(dev, "%s: request irq[%d] for dev: %s, result: %d\n", |
| 791 | __func__, irq, dev_name(dev), ret); |
| 792 | if (!ret) |
| 793 | tsf_info->irq_num = irq; |
| 794 | } |
| 795 | |
| 796 | static void cnss_sdio_tsf_deinit(struct cnss_cap_tsf_info *tsf_info) |
| 797 | { |
| 798 | int irq = tsf_info->irq_num; |
| 799 | |
| 800 | if (irq < 0) |
| 801 | return; |
| 802 | |
| 803 | free_irq(irq, (void *)tsf_info); |
| 804 | |
| 805 | tsf_info->irq_num = -EINVAL; |
| 806 | tsf_info->irq_handler = NULL; |
| 807 | tsf_info->context = NULL; |
| 808 | } |
| 809 | |
| 810 | static void cnss_sdio_set_platform_ops(struct device *dev) |
| 811 | { |
| 812 | struct cnss_dev_platform_ops *pf_ops = &cnss_pdata->platform_ops; |
| 813 | |
| 814 | pf_ops->power_up = cnss_sdio_power_up; |
| 815 | pf_ops->power_down = cnss_sdio_power_down; |
| 816 | pf_ops->device_crashed = cnss_sdio_device_crashed; |
| 817 | pf_ops->get_virt_ramdump_mem = cnss_sdio_get_virt_ramdump_mem; |
| 818 | pf_ops->device_self_recovery = cnss_sdio_device_self_recovery; |
| 819 | pf_ops->get_wlan_mac_address = cnss_sdio_get_wlan_mac_address; |
| 820 | pf_ops->set_wlan_mac_address = cnss_sdio_set_wlan_mac_address; |
| 821 | pf_ops->schedule_recovery_work = cnss_sdio_schedule_recovery_work; |
| 822 | pf_ops->request_bus_bandwidth = cnss_sdio_request_bus_bandwidth; |
| 823 | pf_ops->register_tsf_captured_handler = |
| 824 | cnss_sdio_register_tsf_captured_handler; |
| 825 | pf_ops->unregister_tsf_captured_handler = |
| 826 | cnss_sdio_unregister_tsf_captured_handler; |
| 827 | dev->platform_data = pf_ops; |
| 828 | } |
| 829 | |
| 830 | static int cnss_sdio_wlan_inserted(struct sdio_func *func, |
| 831 | const struct sdio_device_id *id) |
| 832 | { |
| 833 | struct cnss_sdio_info *info; |
| 834 | |
| 835 | if (!cnss_pdata) |
| 836 | return -ENODEV; |
| 837 | |
| 838 | info = &cnss_pdata->cnss_sdio_info; |
| 839 | |
| 840 | info->func = func; |
| 841 | info->card = func->card; |
| 842 | info->host = func->card->host; |
| 843 | info->id = id; |
| 844 | info->dev = &func->dev; |
| 845 | cnss_sdio_set_platform_ops(info->dev); |
| 846 | |
| 847 | cnss_put_hw_resources(cnss_pdata->cnss_sdio_info.dev); |
| 848 | |
| 849 | pr_info("SDIO Device is Probed\n"); |
| 850 | return 0; |
| 851 | } |
| 852 | |
| 853 | static void cnss_sdio_wlan_removed(struct sdio_func *func) |
| 854 | { |
| 855 | struct cnss_sdio_info *info; |
| 856 | |
| 857 | if (!cnss_pdata) |
| 858 | return; |
| 859 | |
| 860 | info = &cnss_pdata->cnss_sdio_info; |
| 861 | |
| 862 | info->host = NULL; |
| 863 | info->card = NULL; |
| 864 | info->func = NULL; |
| 865 | info->id = NULL; |
| 866 | } |
| 867 | |
| 868 | #if defined(CONFIG_PM) |
| 869 | static int cnss_sdio_wlan_suspend(struct device *dev) |
| 870 | { |
| 871 | struct cnss_sdio_wlan_driver *wdrv; |
| 872 | struct cnss_sdio_bus_bandwidth *bus_bandwidth; |
| 873 | struct sdio_func *func; |
| 874 | |
| 875 | int error = 0; |
| 876 | |
| 877 | if (!cnss_pdata) |
| 878 | return -ENODEV; |
| 879 | |
| 880 | bus_bandwidth = &cnss_pdata->bus_bandwidth; |
| 881 | if (bus_bandwidth->bus_client) { |
| 882 | msm_bus_scale_client_update_request( |
| 883 | bus_bandwidth->bus_client, CNSS_BUS_WIDTH_NONE); |
| 884 | } |
| 885 | |
| 886 | func = cnss_pdata->cnss_sdio_info.func; |
| 887 | wdrv = cnss_pdata->cnss_sdio_info.wdrv; |
| 888 | if (!wdrv) { |
| 889 | /* This can happen when no wlan driver loaded (no register to |
| 890 | * platform driver). |
| 891 | */ |
| 892 | sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); |
| 893 | pr_debug("wlan driver not registered\n"); |
| 894 | return 0; |
| 895 | } |
| 896 | if (wdrv->suspend) { |
| 897 | error = wdrv->suspend(dev); |
| 898 | if (error) |
| 899 | pr_err("wlan suspend failed error=%d\n", error); |
| 900 | } |
| 901 | |
| 902 | return error; |
| 903 | } |
| 904 | |
| 905 | static int cnss_sdio_wlan_resume(struct device *dev) |
| 906 | { |
| 907 | struct cnss_sdio_wlan_driver *wdrv; |
| 908 | struct cnss_sdio_bus_bandwidth *bus_bandwidth; |
| 909 | int error = 0; |
| 910 | |
| 911 | if (!cnss_pdata) |
| 912 | return -ENODEV; |
| 913 | |
| 914 | bus_bandwidth = &cnss_pdata->bus_bandwidth; |
| 915 | if (bus_bandwidth->bus_client) { |
| 916 | msm_bus_scale_client_update_request( |
| 917 | bus_bandwidth->bus_client, |
| 918 | bus_bandwidth->current_bandwidth_vote); |
| 919 | } |
| 920 | |
| 921 | wdrv = cnss_pdata->cnss_sdio_info.wdrv; |
| 922 | if (!wdrv) { |
| 923 | /* This can happen when no wlan driver loaded (no register to |
| 924 | * platform driver). |
| 925 | */ |
| 926 | pr_debug("wlan driver not registered\n"); |
| 927 | return 0; |
| 928 | } |
| 929 | if (wdrv->resume) { |
| 930 | error = wdrv->resume(dev); |
| 931 | if (error) |
| 932 | pr_err("wlan resume failed error=%d\n", error); |
| 933 | } |
| 934 | return error; |
| 935 | } |
| 936 | #endif |
| 937 | |
| 938 | #if defined(CONFIG_PM) |
| 939 | static const struct dev_pm_ops cnss_ar6k_device_pm_ops = { |
| 940 | .suspend = cnss_sdio_wlan_suspend, |
| 941 | .resume = cnss_sdio_wlan_resume, |
| 942 | }; |
| 943 | #endif /* CONFIG_PM */ |
| 944 | |
| 945 | static struct sdio_driver cnss_ar6k_driver = { |
| 946 | .name = "cnss_ar6k_wlan", |
| 947 | .id_table = ar6k_id_table, |
| 948 | .probe = cnss_sdio_wlan_inserted, |
| 949 | .remove = cnss_sdio_wlan_removed, |
| 950 | #if defined(CONFIG_PM) |
| 951 | .drv = { |
| 952 | .pm = &cnss_ar6k_device_pm_ops, |
| 953 | } |
| 954 | #endif |
| 955 | }; |
| 956 | |
| 957 | static int cnss_set_pinctrl_state(struct cnss_sdio_data *pdata, bool state) |
| 958 | { |
| 959 | struct cnss_wlan_pinctrl_info *info = &pdata->pinctrl_info; |
| 960 | |
| 961 | if (!info->is_antenna_shared) |
| 962 | return 0; |
| 963 | |
| 964 | if (!info->pinctrl) |
| 965 | return -EIO; |
| 966 | |
| 967 | return state ? pinctrl_select_state(info->pinctrl, info->active) : |
| 968 | pinctrl_select_state(info->pinctrl, info->sleep); |
| 969 | } |
| 970 | |
| 971 | int cnss_sdio_configure_spdt(bool state) |
| 972 | { |
| 973 | if (!cnss_pdata) |
| 974 | return -ENODEV; |
| 975 | |
| 976 | return cnss_set_pinctrl_state(cnss_pdata, state); |
| 977 | } |
| 978 | EXPORT_SYMBOL(cnss_sdio_configure_spdt); |
| 979 | |
| 980 | /** |
| 981 | * cnss_sdio_wlan_register_driver() - cnss wlan register API |
| 982 | * @driver: sdio wlan driver interface from wlan driver. |
| 983 | * |
| 984 | * wlan sdio function driver uses this API to register callback |
| 985 | * functions to cnss_sido platform driver. The callback will |
| 986 | * be invoked by corresponding wrapper function of this cnss |
| 987 | * platform driver. |
| 988 | */ |
| 989 | int cnss_sdio_wlan_register_driver(struct cnss_sdio_wlan_driver *driver) |
| 990 | { |
| 991 | struct cnss_sdio_info *cnss_info; |
| 992 | struct device *dev; |
| 993 | int error = -EINVAL; |
| 994 | |
| 995 | if (!cnss_pdata) |
| 996 | return -ENODEV; |
| 997 | |
| 998 | cnss_info = &cnss_pdata->cnss_sdio_info; |
| 999 | dev = cnss_info->dev; |
| 1000 | |
| 1001 | if (cnss_info->wdrv) { |
| 1002 | pr_debug("wdrv already existed\n"); |
| 1003 | return error; |
| 1004 | } |
| 1005 | |
| 1006 | if (!driver) |
| 1007 | return error; |
| 1008 | |
| 1009 | error = cnss_get_hw_resources(dev); |
| 1010 | if (error) { |
| 1011 | pr_err("Failed to restore power err:%d\n", error); |
| 1012 | return error; |
| 1013 | } |
| 1014 | |
| 1015 | error = cnss_set_pinctrl_state(cnss_pdata, PINCTRL_ACTIVE); |
| 1016 | if (error) { |
| 1017 | pr_err("Fail to set pinctrl to active state\n"); |
| 1018 | cnss_put_hw_resources(dev); |
| 1019 | goto put_hw; |
| 1020 | } |
| 1021 | |
| 1022 | /* The HW resources are released in unregister logic if probe fails */ |
| 1023 | error = driver->probe ? driver->probe(cnss_info->func, |
| 1024 | cnss_info->id) : error; |
| 1025 | if (error) { |
| 1026 | pr_err("wlan probe failed error=%d\n", error); |
| 1027 | /** |
| 1028 | * Check memory leak in skb pre-alloc memory pool |
| 1029 | * Reset the skb memory pool |
| 1030 | */ |
| 1031 | goto pinctrl_sleep; |
| 1032 | } |
| 1033 | |
| 1034 | cnss_info->wdrv = driver; |
| 1035 | |
| 1036 | return error; |
| 1037 | |
| 1038 | pinctrl_sleep: |
| 1039 | cnss_set_pinctrl_state(cnss_pdata, PINCTRL_SLEEP); |
| 1040 | put_hw: |
| 1041 | return error; |
| 1042 | } |
| 1043 | EXPORT_SYMBOL(cnss_sdio_wlan_register_driver); |
| 1044 | |
| 1045 | /** |
| 1046 | * cnss_sdio_wlan_unregister_driver() - cnss wlan unregister API |
| 1047 | * @driver: sdio wlan driver interface from wlan driver. |
| 1048 | * |
| 1049 | * wlan sdio function driver uses this API to detach it from cnss_sido |
| 1050 | * platform driver. |
| 1051 | */ |
| 1052 | void |
| 1053 | cnss_sdio_wlan_unregister_driver(struct cnss_sdio_wlan_driver *driver) |
| 1054 | { |
| 1055 | struct cnss_sdio_info *cnss_info; |
| 1056 | struct cnss_sdio_bus_bandwidth *bus_bandwidth; |
| 1057 | |
| 1058 | if (!cnss_pdata) |
| 1059 | return; |
| 1060 | |
| 1061 | bus_bandwidth = &cnss_pdata->bus_bandwidth; |
| 1062 | if (bus_bandwidth->bus_client) { |
| 1063 | msm_bus_scale_client_update_request( |
| 1064 | bus_bandwidth->bus_client, CNSS_BUS_WIDTH_NONE); |
| 1065 | } |
| 1066 | |
| 1067 | cnss_info = &cnss_pdata->cnss_sdio_info; |
| 1068 | if (!cnss_info->wdrv) { |
| 1069 | pr_err("driver not registered\n"); |
| 1070 | return; |
| 1071 | } |
| 1072 | |
| 1073 | if (!driver) |
| 1074 | return; |
| 1075 | |
| 1076 | if (!driver->remove) |
| 1077 | return; |
| 1078 | |
| 1079 | driver->remove(cnss_info->func); |
| 1080 | |
| 1081 | cnss_info->wdrv = NULL; |
| 1082 | cnss_set_pinctrl_state(cnss_pdata, PINCTRL_SLEEP); |
| 1083 | cnss_put_hw_resources(cnss_info->dev); |
| 1084 | } |
| 1085 | EXPORT_SYMBOL(cnss_sdio_wlan_unregister_driver); |
| 1086 | |
| 1087 | /** |
| 1088 | * cnss_wlan_query_oob_status() - cnss wlan query oob status API |
| 1089 | * |
| 1090 | * Wlan sdio function driver uses this API to check whether oob is |
| 1091 | * supported in platform driver. |
| 1092 | * |
| 1093 | * Return: 0 means oob is supported, others means unsupported. |
| 1094 | */ |
| 1095 | int cnss_wlan_query_oob_status(void) |
| 1096 | { |
| 1097 | return -EINVAL; |
| 1098 | } |
| 1099 | EXPORT_SYMBOL(cnss_wlan_query_oob_status); |
| 1100 | |
| 1101 | /** |
| 1102 | * cnss_wlan_register_oob_irq_handler() - cnss wlan register oob callback API |
| 1103 | * @handler: oob callback function pointer which registered to platform driver. |
| 1104 | * @pm_oob : parameter which registered to platform driver. |
| 1105 | * |
| 1106 | * Wlan sdio function driver uses this API to register oob callback |
| 1107 | * function to platform driver. |
| 1108 | * |
| 1109 | * Return: 0 means register successfully, others means failure. |
| 1110 | */ |
| 1111 | int cnss_wlan_register_oob_irq_handler(oob_irq_handler_t handler, void *pm_oob) |
| 1112 | { |
| 1113 | return -EINVAL; |
| 1114 | } |
| 1115 | EXPORT_SYMBOL(cnss_wlan_register_oob_irq_handler); |
| 1116 | |
| 1117 | /** |
| 1118 | * cnss_wlan_unregister_oob_irq_handler() - unregister oob callback API |
| 1119 | * @pm_oob: parameter which unregistered from platform driver. |
| 1120 | * |
| 1121 | * Wlan sdio function driver uses this API to unregister oob callback |
| 1122 | * function from platform driver. |
| 1123 | * |
| 1124 | * Return: 0 means unregister successfully, others means failure. |
| 1125 | */ |
| 1126 | int cnss_wlan_unregister_oob_irq_handler(void *pm_oob) |
| 1127 | { |
| 1128 | return -EINVAL; |
| 1129 | } |
| 1130 | EXPORT_SYMBOL(cnss_wlan_unregister_oob_irq_handler); |
| 1131 | |
| 1132 | static void cnss_sdio_reset_platform_ops(void) |
| 1133 | { |
| 1134 | struct cnss_dev_platform_ops *pf_ops = &cnss_pdata->platform_ops; |
| 1135 | struct cnss_sdio_info *sdio_info = &cnss_pdata->cnss_sdio_info; |
| 1136 | |
| 1137 | memset(pf_ops, 0, sizeof(struct cnss_dev_platform_ops)); |
| 1138 | if (sdio_info->dev) |
| 1139 | sdio_info->dev->platform_data = NULL; |
| 1140 | } |
| 1141 | |
| 1142 | static int cnss_sdio_wlan_init(void) |
| 1143 | { |
| 1144 | int error = 0; |
| 1145 | |
| 1146 | error = sdio_register_driver(&cnss_ar6k_driver); |
| 1147 | if (error) { |
| 1148 | cnss_sdio_reset_platform_ops(); |
| 1149 | pr_err("registered fail error=%d\n", error); |
| 1150 | } else { |
| 1151 | pr_debug("registered success\n"); |
| 1152 | } |
| 1153 | |
| 1154 | return error; |
| 1155 | } |
| 1156 | |
| 1157 | static void cnss_sdio_wlan_exit(void) |
| 1158 | { |
| 1159 | if (!cnss_pdata) |
| 1160 | return; |
| 1161 | |
| 1162 | cnss_sdio_reset_platform_ops(); |
| 1163 | sdio_unregister_driver(&cnss_ar6k_driver); |
| 1164 | } |
| 1165 | |
| 1166 | static void cnss_sdio_deinit_bus_bandwidth(void) |
| 1167 | { |
| 1168 | struct cnss_sdio_bus_bandwidth *bus_bandwidth; |
| 1169 | |
| 1170 | bus_bandwidth = &cnss_pdata->bus_bandwidth; |
| 1171 | if (bus_bandwidth->bus_client) { |
| 1172 | msm_bus_scale_client_update_request(bus_bandwidth->bus_client, |
| 1173 | CNSS_BUS_WIDTH_NONE); |
| 1174 | msm_bus_scale_unregister_client(bus_bandwidth->bus_client); |
| 1175 | } |
| 1176 | } |
| 1177 | |
| 1178 | static int cnss_sdio_configure_wlan_enable_regulator(void) |
| 1179 | { |
| 1180 | int error; |
| 1181 | struct device *dev = &cnss_pdata->pdev->dev; |
| 1182 | |
| 1183 | if (of_get_property( |
| 1184 | cnss_pdata->pdev->dev.of_node, |
| 1185 | WLAN_VREG_NAME "-supply", NULL)) { |
| 1186 | cnss_pdata->regulator.wlan_vreg = regulator_get( |
| 1187 | &cnss_pdata->pdev->dev, WLAN_VREG_NAME); |
| 1188 | if (IS_ERR(cnss_pdata->regulator.wlan_vreg)) { |
| 1189 | error = PTR_ERR(cnss_pdata->regulator.wlan_vreg); |
| 1190 | dev_err(dev, "VDD-VREG get failed error=%d\n", error); |
| 1191 | return error; |
| 1192 | } |
| 1193 | |
| 1194 | error = regulator_enable(cnss_pdata->regulator.wlan_vreg); |
| 1195 | if (error) { |
| 1196 | dev_err(dev, "VDD-VREG enable failed error=%d\n", |
| 1197 | error); |
| 1198 | goto err_vdd_vreg_regulator; |
| 1199 | } |
| 1200 | } |
| 1201 | |
| 1202 | return 0; |
| 1203 | |
| 1204 | err_vdd_vreg_regulator: |
| 1205 | regulator_put(cnss_pdata->regulator.wlan_vreg); |
| 1206 | |
| 1207 | return error; |
| 1208 | } |
| 1209 | |
| 1210 | static int cnss_sdio_configure_wlan_enable_dsrc_regulator(void) |
| 1211 | { |
| 1212 | int error; |
| 1213 | struct device *dev = &cnss_pdata->pdev->dev; |
| 1214 | |
| 1215 | if (of_get_property( |
| 1216 | cnss_pdata->pdev->dev.of_node, |
| 1217 | WLAN_VREG_DSRC_NAME "-supply", NULL)) { |
| 1218 | cnss_pdata->regulator.wlan_vreg_dsrc = regulator_get( |
| 1219 | &cnss_pdata->pdev->dev, WLAN_VREG_DSRC_NAME); |
| 1220 | if (IS_ERR(cnss_pdata->regulator.wlan_vreg_dsrc)) { |
| 1221 | error = PTR_ERR(cnss_pdata->regulator.wlan_vreg_dsrc); |
| 1222 | dev_err(dev, "VDD-VREG-DSRC get failed error=%d\n", |
| 1223 | error); |
| 1224 | return error; |
| 1225 | } |
| 1226 | |
| 1227 | error = regulator_enable(cnss_pdata->regulator.wlan_vreg_dsrc); |
| 1228 | if (error) { |
| 1229 | dev_err(dev, "VDD-VREG-DSRC enable failed error=%d\n", |
| 1230 | error); |
| 1231 | goto err_vdd_vreg_dsrc_regulator; |
| 1232 | } |
| 1233 | } |
| 1234 | |
| 1235 | return 0; |
| 1236 | |
| 1237 | err_vdd_vreg_dsrc_regulator: |
| 1238 | regulator_put(cnss_pdata->regulator.wlan_vreg_dsrc); |
| 1239 | |
| 1240 | return error; |
| 1241 | } |
| 1242 | |
| 1243 | static int cnss_sdio_configure_regulator(void) |
| 1244 | { |
| 1245 | int error; |
| 1246 | struct device *dev = &cnss_pdata->pdev->dev; |
| 1247 | |
| 1248 | if (of_get_property( |
| 1249 | cnss_pdata->pdev->dev.of_node, |
| 1250 | WLAN_VREG_IO_NAME "-supply", NULL)) { |
| 1251 | cnss_pdata->regulator.wlan_io = regulator_get( |
| 1252 | &cnss_pdata->pdev->dev, WLAN_VREG_IO_NAME); |
| 1253 | if (IS_ERR(cnss_pdata->regulator.wlan_io)) { |
| 1254 | error = PTR_ERR(cnss_pdata->regulator.wlan_io); |
| 1255 | dev_err(dev, "VDD-IO get failed error=%d\n", error); |
| 1256 | return error; |
| 1257 | } |
| 1258 | |
| 1259 | error = regulator_set_voltage( |
| 1260 | cnss_pdata->regulator.wlan_io, |
| 1261 | WLAN_VREG_IO_MIN, WLAN_VREG_IO_MAX); |
| 1262 | if (error) { |
| 1263 | dev_err(dev, "VDD-IO set failed error=%d\n", error); |
| 1264 | goto err_vdd_io_regulator; |
| 1265 | } else { |
| 1266 | error = regulator_enable(cnss_pdata->regulator.wlan_io); |
| 1267 | if (error) { |
| 1268 | dev_err(dev, "VDD-IO enable failed error=%d\n", |
| 1269 | error); |
| 1270 | goto err_vdd_io_regulator; |
| 1271 | } |
| 1272 | } |
| 1273 | } |
| 1274 | |
| 1275 | if (of_get_property( |
| 1276 | cnss_pdata->pdev->dev.of_node, |
| 1277 | WLAN_VREG_XTAL_NAME "-supply", NULL)) { |
| 1278 | cnss_pdata->regulator.wlan_xtal = regulator_get( |
| 1279 | &cnss_pdata->pdev->dev, WLAN_VREG_XTAL_NAME); |
| 1280 | if (IS_ERR(cnss_pdata->regulator.wlan_xtal)) { |
| 1281 | error = PTR_ERR(cnss_pdata->regulator.wlan_xtal); |
| 1282 | dev_err(dev, "VDD-XTAL get failed error=%d\n", error); |
| 1283 | goto err_vdd_xtal_regulator; |
| 1284 | } |
| 1285 | |
| 1286 | error = regulator_set_voltage( |
| 1287 | cnss_pdata->regulator.wlan_xtal, |
| 1288 | WLAN_VREG_XTAL_MIN, WLAN_VREG_XTAL_MAX); |
| 1289 | if (error) { |
| 1290 | dev_err(dev, "VDD-XTAL set failed error=%d\n", error); |
| 1291 | goto err_vdd_xtal_regulator; |
| 1292 | } else { |
| 1293 | error = regulator_enable( |
| 1294 | cnss_pdata->regulator.wlan_xtal); |
| 1295 | if (error) { |
| 1296 | dev_err(dev, "VDD-XTAL enable failed err=%d\n", |
| 1297 | error); |
| 1298 | goto err_vdd_xtal_regulator; |
| 1299 | } |
| 1300 | } |
| 1301 | } |
| 1302 | |
| 1303 | return 0; |
| 1304 | |
| 1305 | err_vdd_xtal_regulator: |
| 1306 | regulator_put(cnss_pdata->regulator.wlan_xtal); |
| 1307 | err_vdd_io_regulator: |
| 1308 | regulator_put(cnss_pdata->regulator.wlan_io); |
| 1309 | return error; |
| 1310 | } |
| 1311 | |
| 1312 | static void cnss_sdio_release_resource(void) |
| 1313 | { |
| 1314 | if (cnss_pdata->regulator.wlan_xtal) |
| 1315 | regulator_put(cnss_pdata->regulator.wlan_xtal); |
| 1316 | if (cnss_pdata->regulator.wlan_vreg) |
| 1317 | regulator_put(cnss_pdata->regulator.wlan_vreg); |
| 1318 | if (cnss_pdata->regulator.wlan_io) |
| 1319 | regulator_put(cnss_pdata->regulator.wlan_io); |
| 1320 | if (cnss_pdata->regulator.wlan_vreg_dsrc) |
| 1321 | regulator_put(cnss_pdata->regulator.wlan_vreg_dsrc); |
| 1322 | } |
| 1323 | |
| 1324 | static int cnss_sdio_pinctrl_init(struct cnss_sdio_data *pdata, |
| 1325 | struct platform_device *pdev) |
| 1326 | { |
| 1327 | int ret = 0; |
| 1328 | struct device *dev = &pdev->dev; |
| 1329 | struct cnss_wlan_pinctrl_info *info = &pdata->pinctrl_info; |
| 1330 | |
| 1331 | if (!of_find_property(dev->of_node, "qcom,is-antenna-shared", NULL)) |
| 1332 | return 0; |
| 1333 | |
| 1334 | info->is_antenna_shared = true; |
| 1335 | info->pinctrl = devm_pinctrl_get(dev); |
| 1336 | if ((IS_ERR_OR_NULL(info->pinctrl))) { |
| 1337 | dev_err(dev, "%s: Failed to get pinctrl\n", __func__); |
| 1338 | return PTR_ERR(info->pinctrl); |
| 1339 | } |
| 1340 | |
| 1341 | info->sleep = pinctrl_lookup_state(info->pinctrl, |
| 1342 | CNSS_PINCTRL_SLEEP_STATE); |
| 1343 | if (IS_ERR_OR_NULL(info->sleep)) { |
| 1344 | dev_err(dev, "%s: Fail to get sleep state for pin\n", __func__); |
| 1345 | ret = PTR_ERR(info->sleep); |
| 1346 | goto release_pinctrl; |
| 1347 | } |
| 1348 | |
| 1349 | info->active = pinctrl_lookup_state(info->pinctrl, |
| 1350 | CNSS_PINCTRL_ACTIVE_STATE); |
| 1351 | if (IS_ERR_OR_NULL(info->active)) { |
| 1352 | dev_err(dev, "%s: Fail to get active state for pin\n", |
| 1353 | __func__); |
| 1354 | ret = PTR_ERR(info->active); |
| 1355 | goto release_pinctrl; |
| 1356 | } |
| 1357 | |
| 1358 | ret = cnss_set_pinctrl_state(pdata, PINCTRL_SLEEP); |
| 1359 | |
| 1360 | if (ret) { |
| 1361 | dev_err(dev, "%s: Fail to set pin in sleep state\n", __func__); |
| 1362 | goto release_pinctrl; |
| 1363 | } |
| 1364 | |
| 1365 | return ret; |
| 1366 | |
| 1367 | release_pinctrl: |
| 1368 | devm_pinctrl_put(info->pinctrl); |
| 1369 | info->is_antenna_shared = false; |
| 1370 | return ret; |
| 1371 | } |
| 1372 | |
| 1373 | static int cnss_sdio_init_bus_bandwidth(void) |
| 1374 | { |
| 1375 | int ret = 0; |
| 1376 | struct cnss_sdio_bus_bandwidth *bus_bandwidth; |
| 1377 | struct device *dev = &cnss_pdata->pdev->dev; |
| 1378 | |
| 1379 | bus_bandwidth = &cnss_pdata->bus_bandwidth; |
| 1380 | bus_bandwidth->bus_scale_table = msm_bus_cl_get_pdata(cnss_pdata->pdev); |
| 1381 | if (!bus_bandwidth->bus_scale_table) { |
| 1382 | dev_err(dev, "Failed to get the bus scale platform data\n"); |
| 1383 | ret = -EINVAL; |
| 1384 | } |
| 1385 | |
| 1386 | bus_bandwidth->bus_client = msm_bus_scale_register_client( |
| 1387 | bus_bandwidth->bus_scale_table); |
| 1388 | if (!bus_bandwidth->bus_client) { |
| 1389 | dev_err(dev, "Failed to register with bus_scale client\n"); |
| 1390 | ret = -EINVAL; |
| 1391 | } |
| 1392 | |
| 1393 | return ret; |
| 1394 | } |
| 1395 | |
| 1396 | static int cnss_sdio_probe(struct platform_device *pdev) |
| 1397 | { |
| 1398 | int error; |
| 1399 | struct device *dev = &pdev->dev; |
| 1400 | struct cnss_sdio_info *info; |
| 1401 | |
| 1402 | if (pdev->dev.of_node) { |
| 1403 | cnss_pdata = devm_kzalloc( |
| 1404 | &pdev->dev, sizeof(*cnss_pdata), GFP_KERNEL); |
| 1405 | if (!cnss_pdata) |
| 1406 | return -ENOMEM; |
| 1407 | } else { |
| 1408 | cnss_pdata = pdev->dev.platform_data; |
| 1409 | } |
| 1410 | |
| 1411 | if (!cnss_pdata) |
| 1412 | return -EINVAL; |
| 1413 | |
| 1414 | cnss_pdata->pdev = pdev; |
| 1415 | info = &cnss_pdata->cnss_sdio_info; |
| 1416 | |
| 1417 | error = cnss_sdio_pinctrl_init(cnss_pdata, pdev); |
| 1418 | if (error) { |
| 1419 | dev_err(&pdev->dev, "Fail to configure pinctrl err:%d\n", |
| 1420 | error); |
| 1421 | return error; |
| 1422 | } |
| 1423 | |
| 1424 | error = cnss_sdio_configure_regulator(); |
| 1425 | if (error) { |
| 1426 | dev_err(&pdev->dev, "Failed to configure voltage regulator error=%d\n", |
| 1427 | error); |
| 1428 | return error; |
| 1429 | } |
| 1430 | |
| 1431 | if (of_get_property( |
| 1432 | cnss_pdata->pdev->dev.of_node, |
| 1433 | WLAN_VREG_NAME "-supply", NULL)) { |
| 1434 | error = cnss_sdio_configure_wlan_enable_regulator(); |
| 1435 | if (error) { |
| 1436 | dev_err(&pdev->dev, |
| 1437 | "Failed to enable wlan enable regulator error=%d\n", |
| 1438 | error); |
| 1439 | goto err_wlan_enable_regulator; |
| 1440 | } |
| 1441 | } |
| 1442 | |
| 1443 | if (of_get_property( |
| 1444 | cnss_pdata->pdev->dev.of_node, |
| 1445 | WLAN_VREG_DSRC_NAME "-supply", NULL)) { |
| 1446 | error = cnss_sdio_configure_wlan_enable_dsrc_regulator(); |
| 1447 | if (error) { |
| 1448 | dev_err(&pdev->dev, |
| 1449 | "Failed to enable wlan dsrc enable regulator\n"); |
| 1450 | goto err_wlan_dsrc_enable_regulator; |
| 1451 | } |
| 1452 | } |
| 1453 | |
| 1454 | info->skip_wlan_en_toggle = of_property_read_bool(dev->of_node, |
| 1455 | "qcom,skip-wlan-en-toggle"); |
| 1456 | info->cnss_hw_state = CNSS_HW_ACTIVE; |
| 1457 | |
| 1458 | cnss_sdio_tsf_init(dev, &info->cap_tsf_info); |
| 1459 | |
| 1460 | error = cnss_sdio_wlan_init(); |
| 1461 | if (error) { |
| 1462 | dev_err(&pdev->dev, "cnss wlan init failed error=%d\n", error); |
| 1463 | goto err_wlan_dsrc_enable_regulator; |
| 1464 | } |
| 1465 | |
| 1466 | error = cnss_configure_ramdump(); |
| 1467 | if (error) { |
| 1468 | dev_err(&pdev->dev, "Failed to configure ramdump error=%d\n", |
| 1469 | error); |
| 1470 | goto err_ramdump_create; |
| 1471 | } |
| 1472 | |
| 1473 | error = cnss_subsys_init(); |
| 1474 | if (error) { |
| 1475 | dev_err(&pdev->dev, "Failed to cnss_subsys_init error=%d\n", |
| 1476 | error); |
| 1477 | goto err_subsys_init; |
| 1478 | } |
| 1479 | |
| 1480 | if (of_property_read_bool( |
| 1481 | pdev->dev.of_node, "qcom,cnss-enable-bus-bandwidth")) { |
| 1482 | error = cnss_sdio_init_bus_bandwidth(); |
| 1483 | if (error) { |
| 1484 | dev_err(&pdev->dev, "Failed to init bus bandwidth\n"); |
| 1485 | goto err_bus_bandwidth_init; |
| 1486 | } |
| 1487 | } |
| 1488 | |
| 1489 | dev_info(&pdev->dev, "CNSS SDIO Driver registered"); |
| 1490 | return 0; |
| 1491 | |
| 1492 | err_bus_bandwidth_init: |
| 1493 | cnss_subsys_exit(); |
| 1494 | err_subsys_init: |
| 1495 | cnss_ramdump_cleanup(); |
| 1496 | err_ramdump_create: |
| 1497 | cnss_sdio_wlan_exit(); |
| 1498 | err_wlan_dsrc_enable_regulator: |
| 1499 | info->cnss_hw_state = CNSS_HW_SLEEP; |
| 1500 | regulator_put(cnss_pdata->regulator.wlan_vreg_dsrc); |
| 1501 | err_wlan_enable_regulator: |
| 1502 | regulator_put(cnss_pdata->regulator.wlan_xtal); |
| 1503 | regulator_put(cnss_pdata->regulator.wlan_io); |
| 1504 | cnss_pdata = NULL; |
| 1505 | return error; |
| 1506 | } |
| 1507 | |
| 1508 | static int cnss_sdio_remove(struct platform_device *pdev) |
| 1509 | { |
| 1510 | struct cnss_sdio_info *info; |
| 1511 | struct cnss_cap_tsf_info *tsf_info; |
| 1512 | |
| 1513 | if (!cnss_pdata) |
| 1514 | return -ENODEV; |
| 1515 | |
| 1516 | info = &cnss_pdata->cnss_sdio_info; |
| 1517 | tsf_info = &info->cap_tsf_info; |
| 1518 | |
| 1519 | cnss_sdio_tsf_deinit(tsf_info); |
| 1520 | cnss_sdio_deinit_bus_bandwidth(); |
| 1521 | cnss_sdio_wlan_exit(); |
| 1522 | cnss_subsys_exit(); |
| 1523 | cnss_ramdump_cleanup(); |
| 1524 | cnss_put_hw_resources(info->dev); |
| 1525 | cnss_sdio_release_resource(); |
| 1526 | cnss_pdata = NULL; |
| 1527 | return 0; |
| 1528 | } |
| 1529 | |
| 1530 | int cnss_sdio_set_wlan_mac_address(const u8 *in, u32 len) |
| 1531 | { |
| 1532 | return 0; |
| 1533 | } |
| 1534 | |
| 1535 | u8 *cnss_sdio_get_wlan_mac_address(u32 *num) |
| 1536 | { |
| 1537 | *num = 0; |
| 1538 | return NULL; |
| 1539 | } |
| 1540 | |
| 1541 | int cnss_sdio_power_down(struct device *dev) |
| 1542 | { |
| 1543 | return 0; |
| 1544 | } |
| 1545 | |
| 1546 | int cnss_sdio_power_up(struct device *dev) |
| 1547 | { |
| 1548 | return 0; |
| 1549 | } |
| 1550 | |
| 1551 | static const struct of_device_id cnss_sdio_dt_match[] = { |
| 1552 | {.compatible = "qcom,cnss_sdio"}, |
| 1553 | {} |
| 1554 | }; |
| 1555 | MODULE_DEVICE_TABLE(of, cnss_sdio_dt_match); |
| 1556 | |
| 1557 | static struct platform_driver cnss_sdio_driver = { |
| 1558 | .probe = cnss_sdio_probe, |
| 1559 | .remove = cnss_sdio_remove, |
| 1560 | .driver = { |
| 1561 | .name = "cnss_sdio", |
| 1562 | .owner = THIS_MODULE, |
| 1563 | .of_match_table = cnss_sdio_dt_match, |
| 1564 | }, |
| 1565 | }; |
| 1566 | |
| 1567 | static int __init cnss_sdio_init(void) |
| 1568 | { |
| 1569 | return platform_driver_register(&cnss_sdio_driver); |
| 1570 | } |
| 1571 | |
| 1572 | static void __exit cnss_sdio_exit(void) |
| 1573 | { |
| 1574 | platform_driver_unregister(&cnss_sdio_driver); |
| 1575 | } |
| 1576 | |
| 1577 | module_init(cnss_sdio_init); |
| 1578 | module_exit(cnss_sdio_exit); |
| 1579 | |
| 1580 | MODULE_LICENSE("GPL v2"); |
| 1581 | MODULE_DESCRIPTION(DEVICE "CNSS SDIO Driver"); |