Kiran Gunda | bf1e6c0 | 2018-01-17 17:50:20 +0530 | [diff] [blame] | 1 | /* Copyright (c) 2014-2018, The Linux Foundation. All rights reserved. |
Kiran Gunda | 183d58f | 2017-11-14 15:24:50 +0530 | [diff] [blame] | 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 | #include <linux/module.h> |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/regmap.h> |
| 17 | #include <linux/errno.h> |
| 18 | #include <linux/leds.h> |
| 19 | #include <linux/slab.h> |
| 20 | #include <linux/of_device.h> |
| 21 | #include <linux/spmi.h> |
| 22 | #include <linux/platform_device.h> |
| 23 | #include <linux/err.h> |
| 24 | #include <linux/delay.h> |
| 25 | #include <linux/of.h> |
| 26 | #include <linux/regulator/consumer.h> |
| 27 | #include <linux/workqueue.h> |
| 28 | #include <linux/power_supply.h> |
| 29 | #include <linux/leds-qpnp-flash.h> |
| 30 | #include <linux/qpnp/qpnp-adc.h> |
| 31 | #include <linux/qpnp/qpnp-revid.h> |
| 32 | #include <linux/debugfs.h> |
| 33 | #include <linux/uaccess.h> |
| 34 | #include "leds.h" |
| 35 | |
| 36 | #define FLASH_LED_PERIPHERAL_SUBTYPE(base) (base + 0x05) |
| 37 | #define FLASH_SAFETY_TIMER(base) (base + 0x40) |
| 38 | #define FLASH_MAX_CURRENT(base) (base + 0x41) |
| 39 | #define FLASH_LED0_CURRENT(base) (base + 0x42) |
| 40 | #define FLASH_LED1_CURRENT(base) (base + 0x43) |
| 41 | #define FLASH_CLAMP_CURRENT(base) (base + 0x44) |
| 42 | #define FLASH_MODULE_ENABLE_CTRL(base) (base + 0x46) |
| 43 | #define FLASH_LED_STROBE_CTRL(base) (base + 0x47) |
| 44 | #define FLASH_LED_TMR_CTRL(base) (base + 0x48) |
| 45 | #define FLASH_HEADROOM(base) (base + 0x4A) |
| 46 | #define FLASH_STARTUP_DELAY(base) (base + 0x4B) |
| 47 | #define FLASH_MASK_ENABLE(base) (base + 0x4C) |
| 48 | #define FLASH_VREG_OK_FORCE(base) (base + 0x4F) |
| 49 | #define FLASH_FAULT_DETECT(base) (base + 0x51) |
| 50 | #define FLASH_THERMAL_DRATE(base) (base + 0x52) |
| 51 | #define FLASH_CURRENT_RAMP(base) (base + 0x54) |
| 52 | #define FLASH_VPH_PWR_DROOP(base) (base + 0x5A) |
| 53 | #define FLASH_HDRM_SNS_ENABLE_CTRL0(base) (base + 0x5C) |
| 54 | #define FLASH_HDRM_SNS_ENABLE_CTRL1(base) (base + 0x5D) |
| 55 | #define FLASH_LED_UNLOCK_SECURE(base) (base + 0xD0) |
| 56 | #define FLASH_PERPH_RESET_CTRL(base) (base + 0xDA) |
| 57 | #define FLASH_TORCH(base) (base + 0xE4) |
| 58 | |
| 59 | #define FLASH_STATUS_REG_MASK 0xFF |
| 60 | #define FLASH_LED_FAULT_STATUS(base) (base + 0x08) |
| 61 | #define INT_LATCHED_STS(base) (base + 0x18) |
| 62 | #define IN_POLARITY_HIGH(base) (base + 0x12) |
| 63 | #define INT_SET_TYPE(base) (base + 0x11) |
| 64 | #define INT_EN_SET(base) (base + 0x15) |
| 65 | #define INT_LATCHED_CLR(base) (base + 0x14) |
| 66 | |
| 67 | #define FLASH_HEADROOM_MASK 0x03 |
| 68 | #define FLASH_STARTUP_DLY_MASK 0x03 |
| 69 | #define FLASH_VREG_OK_FORCE_MASK 0xC0 |
| 70 | #define FLASH_FAULT_DETECT_MASK 0x80 |
| 71 | #define FLASH_THERMAL_DERATE_MASK 0xBF |
| 72 | #define FLASH_SECURE_MASK 0xFF |
| 73 | #define FLASH_TORCH_MASK 0x03 |
| 74 | #define FLASH_CURRENT_MASK 0x7F |
| 75 | #define FLASH_TMR_MASK 0x03 |
| 76 | #define FLASH_TMR_SAFETY 0x00 |
| 77 | #define FLASH_SAFETY_TIMER_MASK 0x7F |
| 78 | #define FLASH_MODULE_ENABLE_MASK 0xE0 |
| 79 | #define FLASH_STROBE_MASK 0xC0 |
| 80 | #define FLASH_CURRENT_RAMP_MASK 0xBF |
| 81 | #define FLASH_VPH_PWR_DROOP_MASK 0xF3 |
| 82 | #define FLASH_LED_HDRM_SNS_ENABLE_MASK 0x81 |
| 83 | #define FLASH_MASK_MODULE_CONTRL_MASK 0xE0 |
| 84 | #define FLASH_FOLLOW_OTST2_RB_MASK 0x08 |
| 85 | |
| 86 | #define FLASH_LED_TRIGGER_DEFAULT "none" |
| 87 | #define FLASH_LED_HEADROOM_DEFAULT_MV 500 |
| 88 | #define FLASH_LED_STARTUP_DELAY_DEFAULT_US 128 |
| 89 | #define FLASH_LED_CLAMP_CURRENT_DEFAULT_MA 200 |
| 90 | #define FLASH_LED_THERMAL_DERATE_THRESHOLD_DEFAULT_C 80 |
| 91 | #define FLASH_LED_RAMP_UP_STEP_DEFAULT_US 3 |
| 92 | #define FLASH_LED_RAMP_DN_STEP_DEFAULT_US 3 |
| 93 | #define FLASH_LED_VPH_PWR_DROOP_THRESHOLD_DEFAULT_MV 3200 |
| 94 | #define FLASH_LED_VPH_PWR_DROOP_DEBOUNCE_TIME_DEFAULT_US 10 |
| 95 | #define FLASH_LED_THERMAL_DERATE_RATE_DEFAULT_PERCENT 2 |
| 96 | #define FLASH_RAMP_UP_DELAY_US_MIN 1000 |
| 97 | #define FLASH_RAMP_UP_DELAY_US_MAX 1001 |
| 98 | #define FLASH_RAMP_DN_DELAY_US_MIN 2160 |
| 99 | #define FLASH_RAMP_DN_DELAY_US_MAX 2161 |
| 100 | #define FLASH_BOOST_REGULATOR_PROBE_DELAY_MS 2000 |
| 101 | #define FLASH_TORCH_MAX_LEVEL 0x0F |
| 102 | #define FLASH_MAX_LEVEL 0x4F |
| 103 | #define FLASH_LED_FLASH_HW_VREG_OK 0x40 |
| 104 | #define FLASH_LED_FLASH_SW_VREG_OK 0x80 |
| 105 | #define FLASH_LED_STROBE_TYPE_HW 0x04 |
| 106 | #define FLASH_DURATION_DIVIDER 10 |
| 107 | #define FLASH_LED_HEADROOM_DIVIDER 100 |
| 108 | #define FLASH_LED_HEADROOM_OFFSET 2 |
| 109 | #define FLASH_LED_MAX_CURRENT_MA 1000 |
| 110 | #define FLASH_LED_THERMAL_THRESHOLD_MIN 95 |
| 111 | #define FLASH_LED_THERMAL_DEVIDER 10 |
| 112 | #define FLASH_LED_VPH_DROOP_THRESHOLD_MIN_MV 2500 |
| 113 | #define FLASH_LED_VPH_DROOP_THRESHOLD_DIVIDER 100 |
| 114 | #define FLASH_LED_HDRM_SNS_ENABLE 0x81 |
| 115 | #define FLASH_LED_HDRM_SNS_DISABLE 0x01 |
| 116 | #define FLASH_LED_UA_PER_MA 1000 |
| 117 | #define FLASH_LED_MASK_MODULE_MASK2_ENABLE 0x20 |
| 118 | #define FLASH_LED_MASK3_ENABLE_SHIFT 7 |
| 119 | #define FLASH_LED_MODULE_CTRL_DEFAULT 0x60 |
| 120 | #define FLASH_LED_CURRENT_READING_DELAY_MIN 5000 |
| 121 | #define FLASH_LED_CURRENT_READING_DELAY_MAX 5001 |
| 122 | #define FLASH_LED_OPEN_FAULT_DETECTED 0xC |
| 123 | |
| 124 | #define FLASH_UNLOCK_SECURE 0xA5 |
| 125 | #define FLASH_LED_TORCH_ENABLE 0x00 |
| 126 | #define FLASH_LED_TORCH_DISABLE 0x03 |
| 127 | #define FLASH_MODULE_ENABLE 0x80 |
| 128 | #define FLASH_LED0_TRIGGER 0x80 |
| 129 | #define FLASH_LED1_TRIGGER 0x40 |
| 130 | #define FLASH_LED0_ENABLEMENT 0x40 |
| 131 | #define FLASH_LED1_ENABLEMENT 0x20 |
| 132 | #define FLASH_LED_DISABLE 0x00 |
| 133 | #define FLASH_LED_MIN_CURRENT_MA 13 |
| 134 | #define FLASH_SUBTYPE_DUAL 0x01 |
| 135 | #define FLASH_SUBTYPE_SINGLE 0x02 |
| 136 | |
| 137 | /* |
| 138 | * ID represents physical LEDs for individual control purpose. |
| 139 | */ |
| 140 | enum flash_led_id { |
| 141 | FLASH_LED_0 = 0, |
| 142 | FLASH_LED_1, |
| 143 | FLASH_LED_SWITCH, |
| 144 | }; |
| 145 | |
| 146 | enum flash_led_type { |
| 147 | FLASH = 0, |
| 148 | TORCH, |
| 149 | SWITCH, |
| 150 | }; |
| 151 | |
| 152 | enum thermal_derate_rate { |
| 153 | RATE_1_PERCENT = 0, |
| 154 | RATE_1P25_PERCENT, |
| 155 | RATE_2_PERCENT, |
| 156 | RATE_2P5_PERCENT, |
| 157 | RATE_5_PERCENT, |
| 158 | }; |
| 159 | |
| 160 | enum current_ramp_steps { |
| 161 | RAMP_STEP_0P2_US = 0, |
| 162 | RAMP_STEP_0P4_US, |
| 163 | RAMP_STEP_0P8_US, |
| 164 | RAMP_STEP_1P6_US, |
| 165 | RAMP_STEP_3P3_US, |
| 166 | RAMP_STEP_6P7_US, |
| 167 | RAMP_STEP_13P5_US, |
| 168 | RAMP_STEP_27US, |
| 169 | }; |
| 170 | |
| 171 | struct flash_regulator_data { |
| 172 | struct regulator *regs; |
| 173 | const char *reg_name; |
| 174 | u32 max_volt_uv; |
| 175 | }; |
| 176 | |
| 177 | /* |
| 178 | * Configurations for each individual LED |
| 179 | */ |
| 180 | struct flash_node_data { |
| 181 | struct platform_device *pdev; |
| 182 | struct regmap *regmap; |
| 183 | struct led_classdev cdev; |
| 184 | struct work_struct work; |
| 185 | struct flash_regulator_data *reg_data; |
| 186 | u16 max_current; |
| 187 | u16 prgm_current; |
| 188 | u16 prgm_current2; |
| 189 | u16 duration; |
| 190 | u8 id; |
| 191 | u8 type; |
| 192 | u8 trigger; |
| 193 | u8 enable; |
| 194 | u8 num_regulators; |
| 195 | bool flash_on; |
| 196 | }; |
| 197 | |
| 198 | /* |
| 199 | * Flash LED configuration read from device tree |
| 200 | */ |
| 201 | struct flash_led_platform_data { |
| 202 | unsigned int temp_threshold_num; |
| 203 | unsigned int temp_derate_curr_num; |
| 204 | unsigned int *die_temp_derate_curr_ma; |
| 205 | unsigned int *die_temp_threshold_degc; |
| 206 | u16 ramp_up_step; |
| 207 | u16 ramp_dn_step; |
| 208 | u16 vph_pwr_droop_threshold; |
| 209 | u16 headroom; |
| 210 | u16 clamp_current; |
| 211 | u8 thermal_derate_threshold; |
| 212 | u8 vph_pwr_droop_debounce_time; |
| 213 | u8 startup_dly; |
| 214 | u8 thermal_derate_rate; |
| 215 | bool pmic_charger_support; |
| 216 | bool self_check_en; |
| 217 | bool thermal_derate_en; |
| 218 | bool current_ramp_en; |
| 219 | bool vph_pwr_droop_en; |
| 220 | bool hdrm_sns_ch0_en; |
| 221 | bool hdrm_sns_ch1_en; |
| 222 | bool power_detect_en; |
| 223 | bool mask3_en; |
| 224 | bool follow_rb_disable; |
| 225 | bool die_current_derate_en; |
| 226 | }; |
| 227 | |
| 228 | struct qpnp_flash_led_buffer { |
| 229 | struct mutex debugfs_lock; /* Prevent thread concurrency */ |
| 230 | size_t rpos; |
| 231 | size_t wpos; |
| 232 | size_t len; |
| 233 | struct qpnp_flash_led *led; |
| 234 | u32 buffer_cnt; |
| 235 | char data[0]; |
| 236 | }; |
| 237 | |
| 238 | /* |
| 239 | * Flash LED data structure containing flash LED attributes |
| 240 | */ |
| 241 | struct qpnp_flash_led { |
| 242 | struct pmic_revid_data *revid_data; |
| 243 | struct platform_device *pdev; |
| 244 | struct regmap *regmap; |
| 245 | struct flash_led_platform_data *pdata; |
| 246 | struct pinctrl *pinctrl; |
| 247 | struct pinctrl_state *gpio_state_active; |
| 248 | struct pinctrl_state *gpio_state_suspend; |
| 249 | struct flash_node_data *flash_node; |
| 250 | struct power_supply *battery_psy; |
| 251 | struct workqueue_struct *ordered_workq; |
| 252 | struct qpnp_vadc_chip *vadc_dev; |
| 253 | struct mutex flash_led_lock; |
| 254 | struct dentry *dbgfs_root; |
| 255 | int num_leds; |
| 256 | u16 base; |
| 257 | u16 current_addr; |
| 258 | u16 current2_addr; |
| 259 | u8 peripheral_type; |
| 260 | u8 fault_reg; |
| 261 | bool gpio_enabled; |
| 262 | bool charging_enabled; |
| 263 | bool strobe_debug; |
| 264 | bool dbg_feature_en; |
| 265 | bool open_fault; |
| 266 | }; |
| 267 | |
| 268 | static u8 qpnp_flash_led_ctrl_dbg_regs[] = { |
| 269 | 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, |
| 270 | 0x4A, 0x4B, 0x4C, 0x4F, 0x51, 0x52, 0x54, 0x55, 0x5A, 0x5C, 0x5D, |
| 271 | }; |
| 272 | |
| 273 | static int flash_led_dbgfs_file_open(struct qpnp_flash_led *led, |
| 274 | struct file *file) |
| 275 | { |
| 276 | struct qpnp_flash_led_buffer *log; |
| 277 | size_t logbufsize = SZ_4K; |
| 278 | |
| 279 | log = kzalloc(logbufsize, GFP_KERNEL); |
| 280 | if (!log) |
| 281 | return -ENOMEM; |
| 282 | |
| 283 | log->rpos = 0; |
| 284 | log->wpos = 0; |
| 285 | log->len = logbufsize - sizeof(*log); |
| 286 | mutex_init(&log->debugfs_lock); |
| 287 | log->led = led; |
| 288 | |
| 289 | log->buffer_cnt = 1; |
| 290 | file->private_data = log; |
| 291 | |
| 292 | return 0; |
| 293 | } |
| 294 | |
| 295 | static int flash_led_dfs_open(struct inode *inode, struct file *file) |
| 296 | { |
| 297 | struct qpnp_flash_led *led = inode->i_private; |
| 298 | |
| 299 | return flash_led_dbgfs_file_open(led, file); |
| 300 | } |
| 301 | |
| 302 | static int flash_led_dfs_close(struct inode *inode, struct file *file) |
| 303 | { |
| 304 | struct qpnp_flash_led_buffer *log = file->private_data; |
| 305 | |
| 306 | if (log) { |
| 307 | file->private_data = NULL; |
| 308 | mutex_destroy(&log->debugfs_lock); |
| 309 | kfree(log); |
| 310 | } |
| 311 | |
| 312 | return 0; |
| 313 | } |
| 314 | |
| 315 | #define MIN_BUFFER_WRITE_LEN 20 |
| 316 | static int print_to_log(struct qpnp_flash_led_buffer *log, |
| 317 | const char *fmt, ...) |
| 318 | { |
| 319 | va_list args; |
| 320 | int cnt; |
| 321 | char *log_buf; |
| 322 | size_t size = log->len - log->wpos; |
| 323 | |
| 324 | if (size < MIN_BUFFER_WRITE_LEN) |
| 325 | return 0; /* not enough buffer left */ |
| 326 | |
| 327 | log_buf = &log->data[log->wpos]; |
| 328 | va_start(args, fmt); |
| 329 | cnt = vscnprintf(log_buf, size, fmt, args); |
| 330 | va_end(args); |
| 331 | |
| 332 | log->wpos += cnt; |
| 333 | return cnt; |
| 334 | } |
| 335 | |
| 336 | static ssize_t flash_led_dfs_latched_reg_read(struct file *fp, char __user *buf, |
| 337 | size_t count, loff_t *ppos) { |
| 338 | struct qpnp_flash_led_buffer *log = fp->private_data; |
| 339 | struct qpnp_flash_led *led; |
| 340 | uint val; |
| 341 | int rc = 0; |
| 342 | size_t len; |
| 343 | size_t ret; |
| 344 | |
| 345 | if (!log) { |
| 346 | pr_err("error: file private data is NULL\n"); |
| 347 | return -EFAULT; |
| 348 | } |
| 349 | led = log->led; |
| 350 | |
| 351 | mutex_lock(&log->debugfs_lock); |
| 352 | if ((log->rpos >= log->wpos && log->buffer_cnt == 0) || |
| 353 | ((log->len - log->wpos) < MIN_BUFFER_WRITE_LEN)) |
| 354 | goto unlock_mutex; |
| 355 | |
| 356 | rc = regmap_read(led->regmap, INT_LATCHED_STS(led->base), &val); |
| 357 | if (rc) { |
| 358 | dev_err(&led->pdev->dev, |
| 359 | "Unable to read from address %x, rc(%d)\n", |
| 360 | INT_LATCHED_STS(led->base), rc); |
| 361 | goto unlock_mutex; |
| 362 | } |
| 363 | log->buffer_cnt--; |
| 364 | |
| 365 | rc = print_to_log(log, "0x%05X ", INT_LATCHED_STS(led->base)); |
| 366 | if (rc == 0) |
| 367 | goto unlock_mutex; |
| 368 | |
| 369 | rc = print_to_log(log, "0x%02X ", val); |
| 370 | if (rc == 0) |
| 371 | goto unlock_mutex; |
| 372 | |
| 373 | if (log->wpos > 0 && log->data[log->wpos - 1] == ' ') |
| 374 | log->data[log->wpos - 1] = '\n'; |
| 375 | |
| 376 | len = min(count, log->wpos - log->rpos); |
| 377 | |
| 378 | ret = copy_to_user(buf, &log->data[log->rpos], len); |
| 379 | if (ret) { |
| 380 | pr_err("error copy register value to user\n"); |
| 381 | rc = -EFAULT; |
| 382 | goto unlock_mutex; |
| 383 | } |
| 384 | |
| 385 | len -= ret; |
| 386 | *ppos += len; |
| 387 | log->rpos += len; |
| 388 | |
| 389 | rc = len; |
| 390 | |
| 391 | unlock_mutex: |
| 392 | mutex_unlock(&log->debugfs_lock); |
| 393 | return rc; |
| 394 | } |
| 395 | |
| 396 | static ssize_t flash_led_dfs_fault_reg_read(struct file *fp, char __user *buf, |
| 397 | size_t count, loff_t *ppos) { |
| 398 | struct qpnp_flash_led_buffer *log = fp->private_data; |
| 399 | struct qpnp_flash_led *led; |
| 400 | int rc = 0; |
| 401 | size_t len; |
| 402 | size_t ret; |
| 403 | |
| 404 | if (!log) { |
| 405 | pr_err("error: file private data is NULL\n"); |
| 406 | return -EFAULT; |
| 407 | } |
| 408 | led = log->led; |
| 409 | |
| 410 | mutex_lock(&log->debugfs_lock); |
| 411 | if ((log->rpos >= log->wpos && log->buffer_cnt == 0) || |
| 412 | ((log->len - log->wpos) < MIN_BUFFER_WRITE_LEN)) |
| 413 | goto unlock_mutex; |
| 414 | |
| 415 | log->buffer_cnt--; |
| 416 | |
| 417 | rc = print_to_log(log, "0x%05X ", FLASH_LED_FAULT_STATUS(led->base)); |
| 418 | if (rc == 0) |
| 419 | goto unlock_mutex; |
| 420 | |
| 421 | rc = print_to_log(log, "0x%02X ", led->fault_reg); |
| 422 | if (rc == 0) |
| 423 | goto unlock_mutex; |
| 424 | |
| 425 | if (log->wpos > 0 && log->data[log->wpos - 1] == ' ') |
| 426 | log->data[log->wpos - 1] = '\n'; |
| 427 | |
| 428 | len = min(count, log->wpos - log->rpos); |
| 429 | |
| 430 | ret = copy_to_user(buf, &log->data[log->rpos], len); |
| 431 | if (ret) { |
| 432 | pr_err("error copy register value to user\n"); |
| 433 | rc = -EFAULT; |
| 434 | goto unlock_mutex; |
| 435 | } |
| 436 | |
| 437 | len -= ret; |
| 438 | *ppos += len; |
| 439 | log->rpos += len; |
| 440 | |
| 441 | rc = len; |
| 442 | |
| 443 | unlock_mutex: |
| 444 | mutex_unlock(&log->debugfs_lock); |
| 445 | return rc; |
| 446 | } |
| 447 | |
| 448 | static ssize_t flash_led_dfs_fault_reg_enable(struct file *file, |
| 449 | const char __user *buf, size_t count, loff_t *ppos) { |
| 450 | |
| 451 | u8 *val; |
| 452 | int pos = 0; |
| 453 | int cnt = 0; |
| 454 | int data; |
| 455 | size_t ret = 0; |
| 456 | |
| 457 | struct qpnp_flash_led_buffer *log = file->private_data; |
| 458 | struct qpnp_flash_led *led; |
| 459 | char *kbuf; |
| 460 | |
| 461 | if (!log) { |
| 462 | pr_err("error: file private data is NULL\n"); |
| 463 | return -EFAULT; |
| 464 | } |
| 465 | led = log->led; |
| 466 | |
| 467 | mutex_lock(&log->debugfs_lock); |
| 468 | kbuf = kmalloc(count + 1, GFP_KERNEL); |
| 469 | if (!kbuf) { |
| 470 | ret = -ENOMEM; |
| 471 | goto unlock_mutex; |
| 472 | } |
| 473 | |
| 474 | ret = copy_from_user(kbuf, buf, count); |
| 475 | if (!ret) { |
| 476 | pr_err("failed to copy data from user\n"); |
| 477 | ret = -EFAULT; |
| 478 | goto free_buf; |
| 479 | } |
| 480 | |
| 481 | count -= ret; |
| 482 | *ppos += count; |
| 483 | kbuf[count] = '\0'; |
| 484 | val = kbuf; |
| 485 | while (sscanf(kbuf + pos, "%i", &data) == 1) { |
| 486 | pos++; |
| 487 | val[cnt++] = data & 0xff; |
| 488 | } |
| 489 | |
| 490 | if (!cnt) |
| 491 | goto free_buf; |
| 492 | |
| 493 | ret = count; |
| 494 | if (*val == 1) |
| 495 | led->strobe_debug = true; |
| 496 | else |
| 497 | led->strobe_debug = false; |
| 498 | |
| 499 | free_buf: |
| 500 | kfree(kbuf); |
| 501 | unlock_mutex: |
| 502 | mutex_unlock(&log->debugfs_lock); |
| 503 | return ret; |
| 504 | } |
| 505 | |
| 506 | static ssize_t flash_led_dfs_dbg_enable(struct file *file, |
| 507 | const char __user *buf, size_t count, loff_t *ppos) { |
| 508 | |
| 509 | u8 *val; |
| 510 | int pos = 0; |
| 511 | int cnt = 0; |
| 512 | int data; |
| 513 | size_t ret = 0; |
| 514 | struct qpnp_flash_led_buffer *log = file->private_data; |
| 515 | struct qpnp_flash_led *led; |
| 516 | char *kbuf; |
| 517 | |
| 518 | if (!log) { |
| 519 | pr_err("error: file private data is NULL\n"); |
| 520 | return -EFAULT; |
| 521 | } |
| 522 | led = log->led; |
| 523 | |
| 524 | mutex_lock(&log->debugfs_lock); |
| 525 | kbuf = kmalloc(count + 1, GFP_KERNEL); |
| 526 | if (!kbuf) { |
| 527 | ret = -ENOMEM; |
| 528 | goto unlock_mutex; |
| 529 | } |
| 530 | |
| 531 | ret = copy_from_user(kbuf, buf, count); |
| 532 | if (ret == count) { |
| 533 | pr_err("failed to copy data from user\n"); |
| 534 | ret = -EFAULT; |
| 535 | goto free_buf; |
| 536 | } |
| 537 | count -= ret; |
| 538 | *ppos += count; |
| 539 | kbuf[count] = '\0'; |
| 540 | val = kbuf; |
| 541 | while (sscanf(kbuf + pos, "%i", &data) == 1) { |
| 542 | pos++; |
| 543 | val[cnt++] = data & 0xff; |
| 544 | } |
| 545 | |
| 546 | if (!cnt) |
| 547 | goto free_buf; |
| 548 | |
| 549 | ret = count; |
| 550 | if (*val == 1) |
| 551 | led->dbg_feature_en = true; |
| 552 | else |
| 553 | led->dbg_feature_en = false; |
| 554 | |
| 555 | free_buf: |
| 556 | kfree(kbuf); |
| 557 | unlock_mutex: |
| 558 | mutex_unlock(&log->debugfs_lock); |
| 559 | return ret; |
| 560 | } |
| 561 | |
| 562 | static const struct file_operations flash_led_dfs_latched_reg_fops = { |
| 563 | .open = flash_led_dfs_open, |
| 564 | .release = flash_led_dfs_close, |
| 565 | .read = flash_led_dfs_latched_reg_read, |
| 566 | }; |
| 567 | |
| 568 | static const struct file_operations flash_led_dfs_strobe_reg_fops = { |
| 569 | .open = flash_led_dfs_open, |
| 570 | .release = flash_led_dfs_close, |
| 571 | .read = flash_led_dfs_fault_reg_read, |
| 572 | .write = flash_led_dfs_fault_reg_enable, |
| 573 | }; |
| 574 | |
| 575 | static const struct file_operations flash_led_dfs_dbg_feature_fops = { |
| 576 | .open = flash_led_dfs_open, |
| 577 | .release = flash_led_dfs_close, |
| 578 | .write = flash_led_dfs_dbg_enable, |
| 579 | }; |
| 580 | |
| 581 | static int |
| 582 | qpnp_led_masked_write(struct qpnp_flash_led *led, u16 addr, u8 mask, u8 val) |
| 583 | { |
| 584 | int rc; |
| 585 | |
| 586 | rc = regmap_update_bits(led->regmap, addr, mask, val); |
| 587 | if (rc) |
| 588 | dev_err(&led->pdev->dev, |
| 589 | "Unable to update_bits to addr=%x, rc(%d)\n", addr, rc); |
| 590 | |
| 591 | dev_dbg(&led->pdev->dev, "Write 0x%02X to addr 0x%02X\n", val, addr); |
| 592 | |
| 593 | return rc; |
| 594 | } |
| 595 | |
| 596 | static int qpnp_flash_led_get_allowed_die_temp_curr(struct qpnp_flash_led *led, |
| 597 | int64_t die_temp_degc) |
| 598 | { |
| 599 | int die_temp_curr_ma; |
| 600 | |
| 601 | if (die_temp_degc >= led->pdata->die_temp_threshold_degc[0]) |
| 602 | die_temp_curr_ma = 0; |
| 603 | else if (die_temp_degc >= led->pdata->die_temp_threshold_degc[1]) |
| 604 | die_temp_curr_ma = led->pdata->die_temp_derate_curr_ma[0]; |
| 605 | else if (die_temp_degc >= led->pdata->die_temp_threshold_degc[2]) |
| 606 | die_temp_curr_ma = led->pdata->die_temp_derate_curr_ma[1]; |
| 607 | else if (die_temp_degc >= led->pdata->die_temp_threshold_degc[3]) |
| 608 | die_temp_curr_ma = led->pdata->die_temp_derate_curr_ma[2]; |
| 609 | else if (die_temp_degc >= led->pdata->die_temp_threshold_degc[4]) |
| 610 | die_temp_curr_ma = led->pdata->die_temp_derate_curr_ma[3]; |
| 611 | else |
| 612 | die_temp_curr_ma = led->pdata->die_temp_derate_curr_ma[4]; |
| 613 | |
| 614 | return die_temp_curr_ma; |
| 615 | } |
| 616 | |
| 617 | static int64_t qpnp_flash_led_get_die_temp(struct qpnp_flash_led *led) |
| 618 | { |
| 619 | struct qpnp_vadc_result die_temp_result; |
| 620 | int rc; |
| 621 | |
| 622 | rc = qpnp_vadc_read(led->vadc_dev, SPARE2, &die_temp_result); |
| 623 | if (rc) { |
| 624 | pr_err("failed to read the die temp\n"); |
| 625 | return -EINVAL; |
| 626 | } |
| 627 | |
| 628 | return die_temp_result.physical; |
| 629 | } |
| 630 | |
| 631 | static int qpnp_get_pmic_revid(struct qpnp_flash_led *led) |
| 632 | { |
| 633 | struct device_node *revid_dev_node; |
| 634 | |
| 635 | revid_dev_node = of_parse_phandle(led->pdev->dev.of_node, |
| 636 | "qcom,pmic-revid", 0); |
| 637 | if (!revid_dev_node) { |
| 638 | dev_err(&led->pdev->dev, |
| 639 | "qcom,pmic-revid property missing\n"); |
| 640 | return -EINVAL; |
| 641 | } |
| 642 | |
| 643 | led->revid_data = get_revid_data(revid_dev_node); |
| 644 | if (IS_ERR(led->revid_data)) { |
| 645 | pr_err("Couldn't get revid data rc = %ld\n", |
| 646 | PTR_ERR(led->revid_data)); |
| 647 | return PTR_ERR(led->revid_data); |
| 648 | } |
| 649 | |
| 650 | return 0; |
| 651 | } |
| 652 | |
| 653 | static int |
| 654 | qpnp_flash_led_get_max_avail_current(struct flash_node_data *flash_node, |
| 655 | struct qpnp_flash_led *led) |
| 656 | { |
| 657 | union power_supply_propval prop; |
| 658 | int64_t chg_temp_milidegc, die_temp_degc; |
| 659 | int max_curr_avail_ma = 2000; |
| 660 | int allowed_die_temp_curr_ma = 2000; |
| 661 | int rc; |
| 662 | |
| 663 | if (led->pdata->power_detect_en) { |
| 664 | if (!led->battery_psy) { |
| 665 | dev_err(&led->pdev->dev, |
| 666 | "Failed to query power supply\n"); |
| 667 | return -EINVAL; |
| 668 | } |
| 669 | |
| 670 | /* |
| 671 | * When charging is enabled, enforce this new enablement |
| 672 | * sequence to reduce fuel gauge reading resolution. |
| 673 | */ |
| 674 | if (led->charging_enabled) { |
| 675 | rc = qpnp_led_masked_write(led, |
| 676 | FLASH_MODULE_ENABLE_CTRL(led->base), |
| 677 | FLASH_MODULE_ENABLE, FLASH_MODULE_ENABLE); |
| 678 | if (rc) { |
| 679 | dev_err(&led->pdev->dev, |
| 680 | "Module enable reg write failed\n"); |
| 681 | return -EINVAL; |
| 682 | } |
| 683 | |
| 684 | usleep_range(FLASH_LED_CURRENT_READING_DELAY_MIN, |
| 685 | FLASH_LED_CURRENT_READING_DELAY_MAX); |
| 686 | } |
| 687 | |
| 688 | power_supply_get_property(led->battery_psy, |
| 689 | POWER_SUPPLY_PROP_FLASH_CURRENT_MAX, &prop); |
| 690 | if (!prop.intval) { |
| 691 | dev_err(&led->pdev->dev, |
| 692 | "battery too low for flash\n"); |
| 693 | return -EINVAL; |
| 694 | } |
| 695 | |
| 696 | max_curr_avail_ma = (prop.intval / FLASH_LED_UA_PER_MA); |
| 697 | } |
| 698 | |
| 699 | /* |
| 700 | * When thermal mitigation is available, this logic will execute to |
| 701 | * derate current based upon the PMIC die temperature. |
| 702 | */ |
| 703 | if (led->pdata->die_current_derate_en) { |
| 704 | chg_temp_milidegc = qpnp_flash_led_get_die_temp(led); |
| 705 | if (chg_temp_milidegc < 0) |
| 706 | return -EINVAL; |
| 707 | |
| 708 | die_temp_degc = div_s64(chg_temp_milidegc, 1000); |
| 709 | allowed_die_temp_curr_ma = |
| 710 | qpnp_flash_led_get_allowed_die_temp_curr(led, |
| 711 | die_temp_degc); |
| 712 | if (allowed_die_temp_curr_ma < 0) |
| 713 | return -EINVAL; |
| 714 | } |
| 715 | |
| 716 | max_curr_avail_ma = (max_curr_avail_ma >= allowed_die_temp_curr_ma) |
| 717 | ? allowed_die_temp_curr_ma : max_curr_avail_ma; |
| 718 | |
| 719 | return max_curr_avail_ma; |
| 720 | } |
| 721 | |
| 722 | static ssize_t qpnp_flash_led_die_temp_store(struct device *dev, |
| 723 | struct device_attribute *attr, |
| 724 | const char *buf, size_t count) |
| 725 | { |
| 726 | struct qpnp_flash_led *led; |
| 727 | struct flash_node_data *flash_node; |
| 728 | unsigned long val; |
| 729 | struct led_classdev *led_cdev = dev_get_drvdata(dev); |
| 730 | ssize_t ret; |
| 731 | |
| 732 | ret = kstrtoul(buf, 10, &val); |
| 733 | if (ret) |
| 734 | return ret; |
| 735 | |
| 736 | flash_node = container_of(led_cdev, struct flash_node_data, cdev); |
| 737 | led = dev_get_drvdata(&flash_node->pdev->dev); |
| 738 | |
| 739 | /*'0' for disable die_temp feature; non-zero to enable feature*/ |
| 740 | if (val == 0) |
| 741 | led->pdata->die_current_derate_en = false; |
| 742 | else |
| 743 | led->pdata->die_current_derate_en = true; |
| 744 | |
| 745 | return count; |
| 746 | } |
| 747 | |
| 748 | static ssize_t qpnp_led_strobe_type_store(struct device *dev, |
| 749 | struct device_attribute *attr, |
| 750 | const char *buf, size_t count) |
| 751 | { |
| 752 | struct flash_node_data *flash_node; |
| 753 | unsigned long state; |
| 754 | struct led_classdev *led_cdev = dev_get_drvdata(dev); |
| 755 | ssize_t ret = -EINVAL; |
| 756 | |
| 757 | ret = kstrtoul(buf, 10, &state); |
| 758 | if (ret) |
| 759 | return ret; |
| 760 | |
| 761 | flash_node = container_of(led_cdev, struct flash_node_data, cdev); |
| 762 | |
| 763 | /* '0' for sw strobe; '1' for hw strobe */ |
| 764 | if (state == 1) |
| 765 | flash_node->trigger |= FLASH_LED_STROBE_TYPE_HW; |
| 766 | else |
| 767 | flash_node->trigger &= ~FLASH_LED_STROBE_TYPE_HW; |
| 768 | |
| 769 | return count; |
| 770 | } |
| 771 | |
| 772 | static ssize_t qpnp_flash_led_dump_regs_show(struct device *dev, |
| 773 | struct device_attribute *attr, char *buf) |
| 774 | { |
| 775 | struct qpnp_flash_led *led; |
| 776 | struct flash_node_data *flash_node; |
| 777 | struct led_classdev *led_cdev = dev_get_drvdata(dev); |
| 778 | int rc, i, count = 0; |
| 779 | u16 addr; |
| 780 | uint val; |
| 781 | |
| 782 | flash_node = container_of(led_cdev, struct flash_node_data, cdev); |
| 783 | led = dev_get_drvdata(&flash_node->pdev->dev); |
| 784 | for (i = 0; i < ARRAY_SIZE(qpnp_flash_led_ctrl_dbg_regs); i++) { |
| 785 | addr = led->base + qpnp_flash_led_ctrl_dbg_regs[i]; |
| 786 | rc = regmap_read(led->regmap, addr, &val); |
| 787 | if (rc) { |
| 788 | dev_err(&led->pdev->dev, |
| 789 | "Unable to read from addr=%x, rc(%d)\n", |
| 790 | addr, rc); |
| 791 | return -EINVAL; |
| 792 | } |
| 793 | |
| 794 | count += snprintf(buf + count, PAGE_SIZE - count, |
| 795 | "REG_0x%x = 0x%02x\n", addr, val); |
| 796 | |
| 797 | if (count >= PAGE_SIZE) |
| 798 | return PAGE_SIZE - 1; |
| 799 | } |
| 800 | |
| 801 | return count; |
| 802 | } |
| 803 | |
| 804 | static ssize_t qpnp_flash_led_current_derate_store(struct device *dev, |
| 805 | struct device_attribute *attr, |
| 806 | const char *buf, size_t count) |
| 807 | { |
| 808 | struct qpnp_flash_led *led; |
| 809 | struct flash_node_data *flash_node; |
| 810 | unsigned long val; |
| 811 | struct led_classdev *led_cdev = dev_get_drvdata(dev); |
| 812 | ssize_t ret; |
| 813 | |
| 814 | ret = kstrtoul(buf, 10, &val); |
| 815 | if (ret) |
| 816 | return ret; |
| 817 | |
| 818 | flash_node = container_of(led_cdev, struct flash_node_data, cdev); |
| 819 | led = dev_get_drvdata(&flash_node->pdev->dev); |
| 820 | |
| 821 | /*'0' for disable derate feature; non-zero to enable derate feature */ |
| 822 | if (val == 0) |
| 823 | led->pdata->power_detect_en = false; |
| 824 | else |
| 825 | led->pdata->power_detect_en = true; |
| 826 | |
| 827 | return count; |
| 828 | } |
| 829 | |
| 830 | static ssize_t qpnp_flash_led_max_current_show(struct device *dev, |
| 831 | struct device_attribute *attr, char *buf) |
| 832 | { |
| 833 | struct qpnp_flash_led *led; |
| 834 | struct flash_node_data *flash_node; |
| 835 | struct led_classdev *led_cdev = dev_get_drvdata(dev); |
| 836 | int max_curr_avail_ma = 0; |
| 837 | |
| 838 | flash_node = container_of(led_cdev, struct flash_node_data, cdev); |
| 839 | led = dev_get_drvdata(&flash_node->pdev->dev); |
| 840 | |
| 841 | if (led->flash_node[0].flash_on) |
| 842 | max_curr_avail_ma += led->flash_node[0].max_current; |
| 843 | if (led->flash_node[1].flash_on) |
| 844 | max_curr_avail_ma += led->flash_node[1].max_current; |
| 845 | |
| 846 | if (led->pdata->power_detect_en || |
| 847 | led->pdata->die_current_derate_en) { |
| 848 | max_curr_avail_ma = |
| 849 | qpnp_flash_led_get_max_avail_current(flash_node, led); |
| 850 | |
| 851 | if (max_curr_avail_ma < 0) |
| 852 | return -EINVAL; |
| 853 | } |
| 854 | |
| 855 | return snprintf(buf, PAGE_SIZE, "%u\n", max_curr_avail_ma); |
| 856 | } |
| 857 | |
| 858 | static struct device_attribute qpnp_flash_led_attrs[] = { |
| 859 | __ATTR(strobe, 0664, NULL, qpnp_led_strobe_type_store), |
| 860 | __ATTR(reg_dump, 0664, qpnp_flash_led_dump_regs_show, NULL), |
| 861 | __ATTR(enable_current_derate, 0664, NULL, |
| 862 | qpnp_flash_led_current_derate_store), |
| 863 | __ATTR(max_allowed_current, 0664, qpnp_flash_led_max_current_show, |
| 864 | NULL), |
| 865 | __ATTR(enable_die_temp_current_derate, 0664, NULL, |
| 866 | qpnp_flash_led_die_temp_store), |
| 867 | }; |
| 868 | |
| 869 | static int qpnp_flash_led_get_thermal_derate_rate(const char *rate) |
| 870 | { |
| 871 | /* |
| 872 | * return 5% derate as default value if user specifies |
| 873 | * a value un-supported |
| 874 | */ |
| 875 | if (strcmp(rate, "1_PERCENT") == 0) |
| 876 | return RATE_1_PERCENT; |
| 877 | else if (strcmp(rate, "1P25_PERCENT") == 0) |
| 878 | return RATE_1P25_PERCENT; |
| 879 | else if (strcmp(rate, "2_PERCENT") == 0) |
| 880 | return RATE_2_PERCENT; |
| 881 | else if (strcmp(rate, "2P5_PERCENT") == 0) |
| 882 | return RATE_2P5_PERCENT; |
| 883 | else if (strcmp(rate, "5_PERCENT") == 0) |
| 884 | return RATE_5_PERCENT; |
| 885 | else |
| 886 | return RATE_5_PERCENT; |
| 887 | } |
| 888 | |
| 889 | static int qpnp_flash_led_get_ramp_step(const char *step) |
| 890 | { |
| 891 | /* |
| 892 | * return 27 us as default value if user specifies |
| 893 | * a value un-supported |
| 894 | */ |
| 895 | if (strcmp(step, "0P2_US") == 0) |
| 896 | return RAMP_STEP_0P2_US; |
| 897 | else if (strcmp(step, "0P4_US") == 0) |
| 898 | return RAMP_STEP_0P4_US; |
| 899 | else if (strcmp(step, "0P8_US") == 0) |
| 900 | return RAMP_STEP_0P8_US; |
| 901 | else if (strcmp(step, "1P6_US") == 0) |
| 902 | return RAMP_STEP_1P6_US; |
| 903 | else if (strcmp(step, "3P3_US") == 0) |
| 904 | return RAMP_STEP_3P3_US; |
| 905 | else if (strcmp(step, "6P7_US") == 0) |
| 906 | return RAMP_STEP_6P7_US; |
| 907 | else if (strcmp(step, "13P5_US") == 0) |
| 908 | return RAMP_STEP_13P5_US; |
| 909 | else |
| 910 | return RAMP_STEP_27US; |
| 911 | } |
| 912 | |
| 913 | static u8 qpnp_flash_led_get_droop_debounce_time(u8 val) |
| 914 | { |
| 915 | /* |
| 916 | * return 10 us as default value if user specifies |
| 917 | * a value un-supported |
| 918 | */ |
| 919 | switch (val) { |
| 920 | case 0: |
| 921 | return 0; |
| 922 | case 10: |
| 923 | return 1; |
| 924 | case 32: |
| 925 | return 2; |
| 926 | case 64: |
| 927 | return 3; |
| 928 | default: |
| 929 | return 1; |
| 930 | } |
| 931 | } |
| 932 | |
| 933 | static u8 qpnp_flash_led_get_startup_dly(u8 val) |
| 934 | { |
| 935 | /* |
| 936 | * return 128 us as default value if user specifies |
| 937 | * a value un-supported |
| 938 | */ |
| 939 | switch (val) { |
| 940 | case 10: |
| 941 | return 0; |
| 942 | case 32: |
| 943 | return 1; |
| 944 | case 64: |
| 945 | return 2; |
| 946 | case 128: |
| 947 | return 3; |
| 948 | default: |
| 949 | return 3; |
| 950 | } |
| 951 | } |
| 952 | |
| 953 | static int |
| 954 | qpnp_flash_led_get_peripheral_type(struct qpnp_flash_led *led) |
| 955 | { |
| 956 | int rc; |
| 957 | uint val; |
| 958 | |
| 959 | rc = regmap_read(led->regmap, |
| 960 | FLASH_LED_PERIPHERAL_SUBTYPE(led->base), &val); |
| 961 | if (rc) { |
| 962 | dev_err(&led->pdev->dev, |
| 963 | "Unable to read peripheral subtype\n"); |
| 964 | return -EINVAL; |
| 965 | } |
| 966 | |
| 967 | return val; |
| 968 | } |
| 969 | |
| 970 | static int qpnp_flash_led_module_disable(struct qpnp_flash_led *led, |
| 971 | struct flash_node_data *flash_node) |
| 972 | { |
| 973 | union power_supply_propval psy_prop; |
| 974 | int rc; |
| 975 | uint val, tmp; |
| 976 | |
| 977 | rc = regmap_read(led->regmap, FLASH_LED_STROBE_CTRL(led->base), &val); |
| 978 | if (rc) { |
| 979 | dev_err(&led->pdev->dev, "Unable to read strobe reg\n"); |
| 980 | return -EINVAL; |
| 981 | } |
| 982 | |
| 983 | tmp = (~flash_node->trigger) & val; |
| 984 | if (!tmp) { |
| 985 | if (flash_node->type == TORCH) { |
| 986 | rc = qpnp_led_masked_write(led, |
| 987 | FLASH_LED_UNLOCK_SECURE(led->base), |
| 988 | FLASH_SECURE_MASK, FLASH_UNLOCK_SECURE); |
| 989 | if (rc) { |
| 990 | dev_err(&led->pdev->dev, |
| 991 | "Secure reg write failed\n"); |
| 992 | return -EINVAL; |
| 993 | } |
| 994 | |
| 995 | rc = qpnp_led_masked_write(led, |
| 996 | FLASH_TORCH(led->base), |
| 997 | FLASH_TORCH_MASK, FLASH_LED_TORCH_DISABLE); |
| 998 | if (rc) { |
| 999 | dev_err(&led->pdev->dev, |
| 1000 | "Torch reg write failed\n"); |
| 1001 | return -EINVAL; |
| 1002 | } |
| 1003 | } |
| 1004 | |
| 1005 | if (led->battery_psy && |
| 1006 | led->revid_data->pmic_subtype == PMI8996_SUBTYPE && |
| 1007 | !led->revid_data->rev3) { |
| 1008 | psy_prop.intval = false; |
| 1009 | rc = power_supply_set_property(led->battery_psy, |
| 1010 | POWER_SUPPLY_PROP_FLASH_TRIGGER, |
| 1011 | &psy_prop); |
| 1012 | if (rc) { |
| 1013 | dev_err(&led->pdev->dev, |
| 1014 | "Failed to enble charger i/p current limit\n"); |
| 1015 | return -EINVAL; |
| 1016 | } |
| 1017 | } |
| 1018 | |
| 1019 | rc = qpnp_led_masked_write(led, |
| 1020 | FLASH_MODULE_ENABLE_CTRL(led->base), |
| 1021 | FLASH_MODULE_ENABLE_MASK, |
| 1022 | FLASH_LED_MODULE_CTRL_DEFAULT); |
| 1023 | if (rc) { |
| 1024 | dev_err(&led->pdev->dev, "Module disable failed\n"); |
| 1025 | return -EINVAL; |
| 1026 | } |
| 1027 | |
| 1028 | if (led->pinctrl) { |
| 1029 | rc = pinctrl_select_state(led->pinctrl, |
| 1030 | led->gpio_state_suspend); |
| 1031 | if (rc) { |
| 1032 | dev_err(&led->pdev->dev, |
| 1033 | "failed to disable GPIO\n"); |
| 1034 | return -EINVAL; |
| 1035 | } |
| 1036 | led->gpio_enabled = false; |
| 1037 | } |
| 1038 | |
| 1039 | if (led->battery_psy) { |
| 1040 | psy_prop.intval = false; |
| 1041 | rc = power_supply_set_property(led->battery_psy, |
| 1042 | POWER_SUPPLY_PROP_FLASH_ACTIVE, |
| 1043 | &psy_prop); |
| 1044 | if (rc) { |
| 1045 | dev_err(&led->pdev->dev, |
| 1046 | "Failed to setup OTG pulse skip enable\n"); |
| 1047 | return -EINVAL; |
| 1048 | } |
| 1049 | } |
| 1050 | } |
| 1051 | |
| 1052 | if (flash_node->trigger & FLASH_LED0_TRIGGER) { |
| 1053 | rc = qpnp_led_masked_write(led, |
| 1054 | led->current_addr, |
| 1055 | FLASH_CURRENT_MASK, 0x00); |
| 1056 | if (rc) { |
| 1057 | dev_err(&led->pdev->dev, |
| 1058 | "current register write failed\n"); |
| 1059 | return -EINVAL; |
| 1060 | } |
| 1061 | } |
| 1062 | |
| 1063 | if (flash_node->trigger & FLASH_LED1_TRIGGER) { |
| 1064 | rc = qpnp_led_masked_write(led, |
| 1065 | led->current2_addr, |
| 1066 | FLASH_CURRENT_MASK, 0x00); |
| 1067 | if (rc) { |
| 1068 | dev_err(&led->pdev->dev, |
| 1069 | "current register write failed\n"); |
| 1070 | return -EINVAL; |
| 1071 | } |
| 1072 | } |
| 1073 | |
| 1074 | if (flash_node->id == FLASH_LED_SWITCH) |
| 1075 | flash_node->trigger &= FLASH_LED_STROBE_TYPE_HW; |
| 1076 | |
| 1077 | return 0; |
| 1078 | } |
| 1079 | |
| 1080 | static enum |
| 1081 | led_brightness qpnp_flash_led_brightness_get(struct led_classdev *led_cdev) |
| 1082 | { |
| 1083 | return led_cdev->brightness; |
| 1084 | } |
| 1085 | |
| 1086 | static int flash_regulator_parse_dt(struct qpnp_flash_led *led, |
| 1087 | struct flash_node_data *flash_node) { |
| 1088 | |
| 1089 | int i = 0, rc; |
| 1090 | struct device_node *node = flash_node->cdev.dev->of_node; |
| 1091 | struct device_node *temp = NULL; |
| 1092 | const char *temp_string; |
| 1093 | u32 val; |
| 1094 | |
| 1095 | flash_node->reg_data = devm_kzalloc(&led->pdev->dev, |
| 1096 | sizeof(struct flash_regulator_data *) * |
| 1097 | flash_node->num_regulators, |
| 1098 | GFP_KERNEL); |
| 1099 | if (!flash_node->reg_data) { |
| 1100 | dev_err(&led->pdev->dev, |
| 1101 | "Unable to allocate memory\n"); |
| 1102 | return -ENOMEM; |
| 1103 | } |
| 1104 | |
| 1105 | for_each_child_of_node(node, temp) { |
| 1106 | rc = of_property_read_string(temp, "regulator-name", |
| 1107 | &temp_string); |
| 1108 | if (!rc) |
| 1109 | flash_node->reg_data[i].reg_name = temp_string; |
| 1110 | else { |
| 1111 | dev_err(&led->pdev->dev, |
| 1112 | "Unable to read regulator name\n"); |
| 1113 | return rc; |
| 1114 | } |
| 1115 | |
| 1116 | rc = of_property_read_u32(temp, "max-voltage", &val); |
| 1117 | if (!rc) { |
| 1118 | flash_node->reg_data[i].max_volt_uv = val; |
| 1119 | } else if (rc != -EINVAL) { |
| 1120 | dev_err(&led->pdev->dev, |
| 1121 | "Unable to read max voltage\n"); |
| 1122 | return rc; |
| 1123 | } |
| 1124 | |
| 1125 | i++; |
| 1126 | } |
| 1127 | |
| 1128 | return 0; |
| 1129 | } |
| 1130 | |
| 1131 | static int flash_regulator_setup(struct qpnp_flash_led *led, |
| 1132 | struct flash_node_data *flash_node, bool on) |
| 1133 | { |
| 1134 | int i, rc = 0; |
| 1135 | |
| 1136 | if (on == false) { |
| 1137 | i = flash_node->num_regulators; |
| 1138 | goto error_regulator_setup; |
| 1139 | } |
| 1140 | |
| 1141 | for (i = 0; i < flash_node->num_regulators; i++) { |
| 1142 | flash_node->reg_data[i].regs = |
| 1143 | regulator_get(flash_node->cdev.dev, |
| 1144 | flash_node->reg_data[i].reg_name); |
| 1145 | if (IS_ERR(flash_node->reg_data[i].regs)) { |
| 1146 | rc = PTR_ERR(flash_node->reg_data[i].regs); |
| 1147 | dev_err(&led->pdev->dev, |
| 1148 | "Failed to get regulator\n"); |
| 1149 | goto error_regulator_setup; |
| 1150 | } |
| 1151 | |
| 1152 | if (regulator_count_voltages(flash_node->reg_data[i].regs) |
| 1153 | > 0) { |
| 1154 | rc = regulator_set_voltage(flash_node->reg_data[i].regs, |
| 1155 | flash_node->reg_data[i].max_volt_uv, |
| 1156 | flash_node->reg_data[i].max_volt_uv); |
| 1157 | if (rc) { |
| 1158 | dev_err(&led->pdev->dev, |
| 1159 | "regulator set voltage failed\n"); |
| 1160 | regulator_put(flash_node->reg_data[i].regs); |
| 1161 | goto error_regulator_setup; |
| 1162 | } |
| 1163 | } |
| 1164 | } |
| 1165 | |
| 1166 | return rc; |
| 1167 | |
| 1168 | error_regulator_setup: |
| 1169 | while (i--) { |
| 1170 | if (regulator_count_voltages(flash_node->reg_data[i].regs) |
| 1171 | > 0) { |
| 1172 | regulator_set_voltage(flash_node->reg_data[i].regs, |
| 1173 | 0, flash_node->reg_data[i].max_volt_uv); |
| 1174 | } |
| 1175 | |
| 1176 | regulator_put(flash_node->reg_data[i].regs); |
| 1177 | } |
| 1178 | |
| 1179 | return rc; |
| 1180 | } |
| 1181 | |
| 1182 | static int flash_regulator_enable(struct qpnp_flash_led *led, |
| 1183 | struct flash_node_data *flash_node, bool on) |
| 1184 | { |
| 1185 | int i, rc = 0; |
| 1186 | |
| 1187 | if (on == false) { |
| 1188 | i = flash_node->num_regulators; |
| 1189 | goto error_regulator_enable; |
| 1190 | } |
| 1191 | |
| 1192 | for (i = 0; i < flash_node->num_regulators; i++) { |
| 1193 | rc = regulator_enable(flash_node->reg_data[i].regs); |
| 1194 | if (rc) { |
| 1195 | dev_err(&led->pdev->dev, |
| 1196 | "regulator enable failed\n"); |
| 1197 | goto error_regulator_enable; |
| 1198 | } |
| 1199 | } |
| 1200 | |
| 1201 | return rc; |
| 1202 | |
| 1203 | error_regulator_enable: |
| 1204 | while (i--) |
| 1205 | regulator_disable(flash_node->reg_data[i].regs); |
| 1206 | |
| 1207 | return rc; |
| 1208 | } |
| 1209 | |
Kiran Gunda | bf1e6c0 | 2018-01-17 17:50:20 +0530 | [diff] [blame] | 1210 | static int qpnp_flash_led_prepare_v1(struct led_trigger *trig, int options, |
Kiran Gunda | 183d58f | 2017-11-14 15:24:50 +0530 | [diff] [blame] | 1211 | int *max_current) |
| 1212 | { |
| 1213 | struct led_classdev *led_cdev = trigger_to_lcdev(trig); |
| 1214 | struct flash_node_data *flash_node; |
| 1215 | struct qpnp_flash_led *led; |
| 1216 | int rc; |
| 1217 | |
| 1218 | if (!led_cdev) { |
| 1219 | pr_err("Invalid led_trigger provided\n"); |
| 1220 | return -EINVAL; |
| 1221 | } |
| 1222 | |
| 1223 | flash_node = container_of(led_cdev, struct flash_node_data, cdev); |
| 1224 | led = dev_get_drvdata(&flash_node->pdev->dev); |
| 1225 | |
| 1226 | if (!(options & FLASH_LED_PREPARE_OPTIONS_MASK)) { |
| 1227 | dev_err(&led->pdev->dev, "Invalid options %d\n", options); |
| 1228 | return -EINVAL; |
| 1229 | } |
| 1230 | |
| 1231 | if (options & ENABLE_REGULATOR) { |
| 1232 | rc = flash_regulator_enable(led, flash_node, true); |
| 1233 | if (rc < 0) { |
| 1234 | dev_err(&led->pdev->dev, |
| 1235 | "enable regulator failed, rc=%d\n", rc); |
| 1236 | return rc; |
| 1237 | } |
| 1238 | } |
| 1239 | |
| 1240 | if (options & DISABLE_REGULATOR) { |
| 1241 | rc = flash_regulator_enable(led, flash_node, false); |
| 1242 | if (rc < 0) { |
| 1243 | dev_err(&led->pdev->dev, |
| 1244 | "disable regulator failed, rc=%d\n", rc); |
| 1245 | return rc; |
| 1246 | } |
| 1247 | } |
| 1248 | |
| 1249 | if (options & QUERY_MAX_CURRENT) { |
| 1250 | rc = qpnp_flash_led_get_max_avail_current(flash_node, led); |
| 1251 | if (rc < 0) { |
| 1252 | dev_err(&led->pdev->dev, |
| 1253 | "query max current failed, rc=%d\n", rc); |
| 1254 | return rc; |
| 1255 | } |
| 1256 | *max_current = rc; |
| 1257 | } |
| 1258 | |
| 1259 | return 0; |
| 1260 | } |
| 1261 | |
| 1262 | static void qpnp_flash_led_work(struct work_struct *work) |
| 1263 | { |
| 1264 | struct flash_node_data *flash_node = container_of(work, |
| 1265 | struct flash_node_data, work); |
| 1266 | struct qpnp_flash_led *led = dev_get_drvdata(&flash_node->pdev->dev); |
| 1267 | union power_supply_propval psy_prop; |
| 1268 | int rc, brightness = flash_node->cdev.brightness; |
| 1269 | int max_curr_avail_ma = 0; |
| 1270 | int total_curr_ma = 0; |
| 1271 | int i; |
| 1272 | u8 val = 0; |
| 1273 | uint temp; |
| 1274 | |
| 1275 | mutex_lock(&led->flash_led_lock); |
| 1276 | |
| 1277 | if (!brightness) |
| 1278 | goto turn_off; |
| 1279 | |
| 1280 | if (led->open_fault) { |
| 1281 | dev_err(&led->pdev->dev, "Open fault detected\n"); |
| 1282 | mutex_unlock(&led->flash_led_lock); |
| 1283 | return; |
| 1284 | } |
| 1285 | |
| 1286 | if (!flash_node->flash_on && flash_node->num_regulators > 0) { |
| 1287 | rc = flash_regulator_enable(led, flash_node, true); |
| 1288 | if (rc) { |
| 1289 | mutex_unlock(&led->flash_led_lock); |
| 1290 | return; |
| 1291 | } |
| 1292 | } |
| 1293 | |
| 1294 | if (!led->gpio_enabled && led->pinctrl) { |
| 1295 | rc = pinctrl_select_state(led->pinctrl, |
| 1296 | led->gpio_state_active); |
| 1297 | if (rc) { |
| 1298 | dev_err(&led->pdev->dev, "failed to enable GPIO\n"); |
| 1299 | goto error_enable_gpio; |
| 1300 | } |
| 1301 | led->gpio_enabled = true; |
| 1302 | } |
| 1303 | |
| 1304 | if (led->dbg_feature_en) { |
| 1305 | rc = qpnp_led_masked_write(led, |
| 1306 | INT_SET_TYPE(led->base), |
| 1307 | FLASH_STATUS_REG_MASK, 0x1F); |
| 1308 | if (rc) { |
| 1309 | dev_err(&led->pdev->dev, |
| 1310 | "INT_SET_TYPE write failed\n"); |
| 1311 | goto exit_flash_led_work; |
| 1312 | } |
| 1313 | |
| 1314 | rc = qpnp_led_masked_write(led, |
| 1315 | IN_POLARITY_HIGH(led->base), |
| 1316 | FLASH_STATUS_REG_MASK, 0x1F); |
| 1317 | if (rc) { |
| 1318 | dev_err(&led->pdev->dev, |
| 1319 | "IN_POLARITY_HIGH write failed\n"); |
| 1320 | goto exit_flash_led_work; |
| 1321 | } |
| 1322 | |
| 1323 | rc = qpnp_led_masked_write(led, |
| 1324 | INT_EN_SET(led->base), |
| 1325 | FLASH_STATUS_REG_MASK, 0x1F); |
| 1326 | if (rc) { |
| 1327 | dev_err(&led->pdev->dev, "INT_EN_SET write failed\n"); |
| 1328 | goto exit_flash_led_work; |
| 1329 | } |
| 1330 | |
| 1331 | rc = qpnp_led_masked_write(led, |
| 1332 | INT_LATCHED_CLR(led->base), |
| 1333 | FLASH_STATUS_REG_MASK, 0x1F); |
| 1334 | if (rc) { |
| 1335 | dev_err(&led->pdev->dev, |
| 1336 | "INT_LATCHED_CLR write failed\n"); |
| 1337 | goto exit_flash_led_work; |
| 1338 | } |
| 1339 | } |
| 1340 | |
| 1341 | if (led->flash_node[led->num_leds - 1].id == FLASH_LED_SWITCH && |
| 1342 | flash_node->id != FLASH_LED_SWITCH) { |
| 1343 | led->flash_node[led->num_leds - 1].trigger |= |
| 1344 | (0x80 >> flash_node->id); |
| 1345 | if (flash_node->id == FLASH_LED_0) |
| 1346 | led->flash_node[led->num_leds - 1].prgm_current = |
| 1347 | flash_node->prgm_current; |
| 1348 | else if (flash_node->id == FLASH_LED_1) |
| 1349 | led->flash_node[led->num_leds - 1].prgm_current2 = |
| 1350 | flash_node->prgm_current; |
| 1351 | } |
| 1352 | |
| 1353 | if (flash_node->type == TORCH) { |
| 1354 | rc = qpnp_led_masked_write(led, |
| 1355 | FLASH_LED_UNLOCK_SECURE(led->base), |
| 1356 | FLASH_SECURE_MASK, FLASH_UNLOCK_SECURE); |
| 1357 | if (rc) { |
| 1358 | dev_err(&led->pdev->dev, "Secure reg write failed\n"); |
| 1359 | goto exit_flash_led_work; |
| 1360 | } |
| 1361 | |
| 1362 | rc = qpnp_led_masked_write(led, |
| 1363 | FLASH_TORCH(led->base), |
| 1364 | FLASH_TORCH_MASK, FLASH_LED_TORCH_ENABLE); |
| 1365 | if (rc) { |
| 1366 | dev_err(&led->pdev->dev, "Torch reg write failed\n"); |
| 1367 | goto exit_flash_led_work; |
| 1368 | } |
| 1369 | |
| 1370 | if (flash_node->id == FLASH_LED_SWITCH) { |
| 1371 | val = (u8)(flash_node->prgm_current * |
| 1372 | FLASH_TORCH_MAX_LEVEL |
| 1373 | / flash_node->max_current); |
| 1374 | rc = qpnp_led_masked_write(led, |
| 1375 | led->current_addr, |
| 1376 | FLASH_CURRENT_MASK, val); |
| 1377 | if (rc) { |
| 1378 | dev_err(&led->pdev->dev, |
| 1379 | "Torch reg write failed\n"); |
| 1380 | goto exit_flash_led_work; |
| 1381 | } |
| 1382 | |
| 1383 | val = (u8)(flash_node->prgm_current2 * |
| 1384 | FLASH_TORCH_MAX_LEVEL |
| 1385 | / flash_node->max_current); |
| 1386 | rc = qpnp_led_masked_write(led, |
| 1387 | led->current2_addr, |
| 1388 | FLASH_CURRENT_MASK, val); |
| 1389 | if (rc) { |
| 1390 | dev_err(&led->pdev->dev, |
| 1391 | "Torch reg write failed\n"); |
| 1392 | goto exit_flash_led_work; |
| 1393 | } |
| 1394 | } else { |
| 1395 | val = (u8)(flash_node->prgm_current * |
| 1396 | FLASH_TORCH_MAX_LEVEL / |
| 1397 | flash_node->max_current); |
| 1398 | if (flash_node->id == FLASH_LED_0) { |
| 1399 | rc = qpnp_led_masked_write(led, |
| 1400 | led->current_addr, |
| 1401 | FLASH_CURRENT_MASK, val); |
| 1402 | if (rc) { |
| 1403 | dev_err(&led->pdev->dev, |
| 1404 | "current reg write failed\n"); |
| 1405 | goto exit_flash_led_work; |
| 1406 | } |
| 1407 | } else { |
| 1408 | rc = qpnp_led_masked_write(led, |
| 1409 | led->current2_addr, |
| 1410 | FLASH_CURRENT_MASK, val); |
| 1411 | if (rc) { |
| 1412 | dev_err(&led->pdev->dev, |
| 1413 | "current reg write failed\n"); |
| 1414 | goto exit_flash_led_work; |
| 1415 | } |
| 1416 | } |
| 1417 | } |
| 1418 | |
| 1419 | rc = qpnp_led_masked_write(led, |
| 1420 | FLASH_MAX_CURRENT(led->base), |
| 1421 | FLASH_CURRENT_MASK, FLASH_TORCH_MAX_LEVEL); |
| 1422 | if (rc) { |
| 1423 | dev_err(&led->pdev->dev, |
| 1424 | "Max current reg write failed\n"); |
| 1425 | goto exit_flash_led_work; |
| 1426 | } |
| 1427 | |
| 1428 | rc = qpnp_led_masked_write(led, |
| 1429 | FLASH_MODULE_ENABLE_CTRL(led->base), |
| 1430 | FLASH_MODULE_ENABLE_MASK, FLASH_MODULE_ENABLE); |
| 1431 | if (rc) { |
| 1432 | dev_err(&led->pdev->dev, |
| 1433 | "Module enable reg write failed\n"); |
| 1434 | goto exit_flash_led_work; |
| 1435 | } |
| 1436 | |
| 1437 | if (led->pdata->hdrm_sns_ch0_en || |
| 1438 | led->pdata->hdrm_sns_ch1_en) { |
| 1439 | if (flash_node->id == FLASH_LED_SWITCH) { |
| 1440 | rc = qpnp_led_masked_write(led, |
| 1441 | FLASH_HDRM_SNS_ENABLE_CTRL0(led->base), |
| 1442 | FLASH_LED_HDRM_SNS_ENABLE_MASK, |
| 1443 | flash_node->trigger & |
| 1444 | FLASH_LED0_TRIGGER ? |
| 1445 | FLASH_LED_HDRM_SNS_ENABLE : |
| 1446 | FLASH_LED_HDRM_SNS_DISABLE); |
| 1447 | if (rc) { |
| 1448 | dev_err(&led->pdev->dev, |
| 1449 | "Headroom sense enable failed\n"); |
| 1450 | goto exit_flash_led_work; |
| 1451 | } |
| 1452 | |
| 1453 | rc = qpnp_led_masked_write(led, |
| 1454 | FLASH_HDRM_SNS_ENABLE_CTRL1(led->base), |
| 1455 | FLASH_LED_HDRM_SNS_ENABLE_MASK, |
| 1456 | flash_node->trigger & |
| 1457 | FLASH_LED1_TRIGGER ? |
| 1458 | FLASH_LED_HDRM_SNS_ENABLE : |
| 1459 | FLASH_LED_HDRM_SNS_DISABLE); |
| 1460 | if (rc) { |
| 1461 | dev_err(&led->pdev->dev, |
| 1462 | "Headroom sense enable failed\n"); |
| 1463 | goto exit_flash_led_work; |
| 1464 | } |
| 1465 | } else if (flash_node->id == FLASH_LED_0) { |
| 1466 | rc = qpnp_led_masked_write(led, |
| 1467 | FLASH_HDRM_SNS_ENABLE_CTRL0(led->base), |
| 1468 | FLASH_LED_HDRM_SNS_ENABLE_MASK, |
| 1469 | FLASH_LED_HDRM_SNS_ENABLE); |
| 1470 | if (rc) { |
| 1471 | dev_err(&led->pdev->dev, |
| 1472 | "Headroom sense disable failed\n"); |
| 1473 | goto exit_flash_led_work; |
| 1474 | } |
| 1475 | } else if (flash_node->id == FLASH_LED_1) { |
| 1476 | rc = qpnp_led_masked_write(led, |
| 1477 | FLASH_HDRM_SNS_ENABLE_CTRL1(led->base), |
| 1478 | FLASH_LED_HDRM_SNS_ENABLE_MASK, |
| 1479 | FLASH_LED_HDRM_SNS_ENABLE); |
| 1480 | if (rc) { |
| 1481 | dev_err(&led->pdev->dev, |
| 1482 | "Headroom sense disable failed\n"); |
| 1483 | goto exit_flash_led_work; |
| 1484 | } |
| 1485 | } |
| 1486 | } |
| 1487 | |
| 1488 | rc = qpnp_led_masked_write(led, |
| 1489 | FLASH_LED_STROBE_CTRL(led->base), |
| 1490 | (flash_node->id == FLASH_LED_SWITCH ? FLASH_STROBE_MASK |
| 1491 | | FLASH_LED_STROBE_TYPE_HW |
| 1492 | : flash_node->trigger | |
| 1493 | FLASH_LED_STROBE_TYPE_HW), |
| 1494 | flash_node->trigger); |
| 1495 | if (rc) { |
| 1496 | dev_err(&led->pdev->dev, "Strobe reg write failed\n"); |
| 1497 | goto exit_flash_led_work; |
| 1498 | } |
| 1499 | } else if (flash_node->type == FLASH) { |
| 1500 | if (flash_node->trigger & FLASH_LED0_TRIGGER) |
| 1501 | max_curr_avail_ma += flash_node->max_current; |
| 1502 | if (flash_node->trigger & FLASH_LED1_TRIGGER) |
| 1503 | max_curr_avail_ma += flash_node->max_current; |
| 1504 | |
| 1505 | psy_prop.intval = true; |
| 1506 | rc = power_supply_set_property(led->battery_psy, |
| 1507 | POWER_SUPPLY_PROP_FLASH_ACTIVE, |
| 1508 | &psy_prop); |
| 1509 | if (rc) { |
| 1510 | dev_err(&led->pdev->dev, |
| 1511 | "Failed to setup OTG pulse skip enable\n"); |
| 1512 | goto exit_flash_led_work; |
| 1513 | } |
| 1514 | |
| 1515 | if (led->pdata->power_detect_en || |
| 1516 | led->pdata->die_current_derate_en) { |
| 1517 | if (led->battery_psy) { |
| 1518 | power_supply_get_property(led->battery_psy, |
| 1519 | POWER_SUPPLY_PROP_STATUS, |
| 1520 | &psy_prop); |
| 1521 | if (psy_prop.intval < 0) { |
| 1522 | dev_err(&led->pdev->dev, |
| 1523 | "Invalid battery status\n"); |
| 1524 | goto exit_flash_led_work; |
| 1525 | } |
| 1526 | |
| 1527 | if (psy_prop.intval == |
| 1528 | POWER_SUPPLY_STATUS_CHARGING) |
| 1529 | led->charging_enabled = true; |
| 1530 | else if (psy_prop.intval == |
| 1531 | POWER_SUPPLY_STATUS_DISCHARGING |
| 1532 | || psy_prop.intval == |
| 1533 | POWER_SUPPLY_STATUS_NOT_CHARGING) |
| 1534 | led->charging_enabled = false; |
| 1535 | } |
| 1536 | max_curr_avail_ma = |
| 1537 | qpnp_flash_led_get_max_avail_current |
| 1538 | (flash_node, led); |
| 1539 | if (max_curr_avail_ma < 0) { |
| 1540 | dev_err(&led->pdev->dev, |
| 1541 | "Failed to get max avail curr\n"); |
| 1542 | goto exit_flash_led_work; |
| 1543 | } |
| 1544 | } |
| 1545 | |
| 1546 | if (flash_node->id == FLASH_LED_SWITCH) { |
| 1547 | if (flash_node->trigger & FLASH_LED0_TRIGGER) |
| 1548 | total_curr_ma += flash_node->prgm_current; |
| 1549 | if (flash_node->trigger & FLASH_LED1_TRIGGER) |
| 1550 | total_curr_ma += flash_node->prgm_current2; |
| 1551 | |
| 1552 | if (max_curr_avail_ma < total_curr_ma) { |
| 1553 | flash_node->prgm_current = |
| 1554 | (flash_node->prgm_current * |
| 1555 | max_curr_avail_ma) / total_curr_ma; |
| 1556 | flash_node->prgm_current2 = |
| 1557 | (flash_node->prgm_current2 * |
| 1558 | max_curr_avail_ma) / total_curr_ma; |
| 1559 | } |
| 1560 | |
| 1561 | val = (u8)(flash_node->prgm_current * |
| 1562 | FLASH_MAX_LEVEL / flash_node->max_current); |
| 1563 | rc = qpnp_led_masked_write(led, |
| 1564 | led->current_addr, FLASH_CURRENT_MASK, val); |
| 1565 | if (rc) { |
| 1566 | dev_err(&led->pdev->dev, |
| 1567 | "Current register write failed\n"); |
| 1568 | goto exit_flash_led_work; |
| 1569 | } |
| 1570 | |
| 1571 | val = (u8)(flash_node->prgm_current2 * |
| 1572 | FLASH_MAX_LEVEL / flash_node->max_current); |
| 1573 | rc = qpnp_led_masked_write(led, |
| 1574 | led->current2_addr, FLASH_CURRENT_MASK, val); |
| 1575 | if (rc) { |
| 1576 | dev_err(&led->pdev->dev, |
| 1577 | "Current register write failed\n"); |
| 1578 | goto exit_flash_led_work; |
| 1579 | } |
| 1580 | } else { |
| 1581 | if (max_curr_avail_ma < flash_node->prgm_current) { |
| 1582 | dev_err(&led->pdev->dev, |
| 1583 | "battery only supprots %d mA\n", |
| 1584 | max_curr_avail_ma); |
| 1585 | flash_node->prgm_current = |
| 1586 | (u16)max_curr_avail_ma; |
| 1587 | } |
| 1588 | |
| 1589 | val = (u8)(flash_node->prgm_current * |
| 1590 | FLASH_MAX_LEVEL |
| 1591 | / flash_node->max_current); |
| 1592 | if (flash_node->id == FLASH_LED_0) { |
| 1593 | rc = qpnp_led_masked_write( |
| 1594 | led, |
| 1595 | led->current_addr, |
| 1596 | FLASH_CURRENT_MASK, val); |
| 1597 | if (rc) { |
| 1598 | dev_err(&led->pdev->dev, |
| 1599 | "current reg write failed\n"); |
| 1600 | goto exit_flash_led_work; |
| 1601 | } |
| 1602 | } else if (flash_node->id == FLASH_LED_1) { |
| 1603 | rc = qpnp_led_masked_write( |
| 1604 | led, |
| 1605 | led->current2_addr, |
| 1606 | FLASH_CURRENT_MASK, val); |
| 1607 | if (rc) { |
| 1608 | dev_err(&led->pdev->dev, |
| 1609 | "current reg write failed\n"); |
| 1610 | goto exit_flash_led_work; |
| 1611 | } |
| 1612 | } |
| 1613 | } |
| 1614 | |
| 1615 | val = (u8)((flash_node->duration - FLASH_DURATION_DIVIDER) |
| 1616 | / FLASH_DURATION_DIVIDER); |
| 1617 | rc = qpnp_led_masked_write(led, |
| 1618 | FLASH_SAFETY_TIMER(led->base), |
| 1619 | FLASH_SAFETY_TIMER_MASK, val); |
| 1620 | if (rc) { |
| 1621 | dev_err(&led->pdev->dev, |
| 1622 | "Safety timer reg write failed\n"); |
| 1623 | goto exit_flash_led_work; |
| 1624 | } |
| 1625 | |
| 1626 | rc = qpnp_led_masked_write(led, |
| 1627 | FLASH_MAX_CURRENT(led->base), |
| 1628 | FLASH_CURRENT_MASK, FLASH_MAX_LEVEL); |
| 1629 | if (rc) { |
| 1630 | dev_err(&led->pdev->dev, |
| 1631 | "Max current reg write failed\n"); |
| 1632 | goto exit_flash_led_work; |
| 1633 | } |
| 1634 | |
| 1635 | if (!led->charging_enabled) { |
| 1636 | rc = qpnp_led_masked_write(led, |
| 1637 | FLASH_MODULE_ENABLE_CTRL(led->base), |
| 1638 | FLASH_MODULE_ENABLE, FLASH_MODULE_ENABLE); |
| 1639 | if (rc) { |
| 1640 | dev_err(&led->pdev->dev, |
| 1641 | "Module enable reg write failed\n"); |
| 1642 | goto exit_flash_led_work; |
| 1643 | } |
| 1644 | |
| 1645 | usleep_range(FLASH_RAMP_UP_DELAY_US_MIN, |
| 1646 | FLASH_RAMP_UP_DELAY_US_MAX); |
| 1647 | } |
| 1648 | |
| 1649 | if (led->revid_data->pmic_subtype == PMI8996_SUBTYPE && |
| 1650 | !led->revid_data->rev3) { |
| 1651 | rc = power_supply_set_property(led->battery_psy, |
| 1652 | POWER_SUPPLY_PROP_FLASH_TRIGGER, |
| 1653 | &psy_prop); |
| 1654 | if (rc) { |
| 1655 | dev_err(&led->pdev->dev, |
| 1656 | "Failed to disable charger i/p curr limit\n"); |
| 1657 | goto exit_flash_led_work; |
| 1658 | } |
| 1659 | } |
| 1660 | |
| 1661 | if (led->pdata->hdrm_sns_ch0_en || |
| 1662 | led->pdata->hdrm_sns_ch1_en) { |
| 1663 | if (flash_node->id == FLASH_LED_SWITCH) { |
| 1664 | rc = qpnp_led_masked_write(led, |
| 1665 | FLASH_HDRM_SNS_ENABLE_CTRL0(led->base), |
| 1666 | FLASH_LED_HDRM_SNS_ENABLE_MASK, |
| 1667 | (flash_node->trigger & |
| 1668 | FLASH_LED0_TRIGGER ? |
| 1669 | FLASH_LED_HDRM_SNS_ENABLE : |
| 1670 | FLASH_LED_HDRM_SNS_DISABLE)); |
| 1671 | if (rc) { |
| 1672 | dev_err(&led->pdev->dev, |
| 1673 | "Headroom sense enable failed\n"); |
| 1674 | goto exit_flash_led_work; |
| 1675 | } |
| 1676 | |
| 1677 | rc = qpnp_led_masked_write(led, |
| 1678 | FLASH_HDRM_SNS_ENABLE_CTRL1(led->base), |
| 1679 | FLASH_LED_HDRM_SNS_ENABLE_MASK, |
| 1680 | (flash_node->trigger & |
| 1681 | FLASH_LED1_TRIGGER ? |
| 1682 | FLASH_LED_HDRM_SNS_ENABLE : |
| 1683 | FLASH_LED_HDRM_SNS_DISABLE)); |
| 1684 | if (rc) { |
| 1685 | dev_err(&led->pdev->dev, |
| 1686 | "Headroom sense enable failed\n"); |
| 1687 | goto exit_flash_led_work; |
| 1688 | } |
| 1689 | } else if (flash_node->id == FLASH_LED_0) { |
| 1690 | rc = qpnp_led_masked_write(led, |
| 1691 | FLASH_HDRM_SNS_ENABLE_CTRL0(led->base), |
| 1692 | FLASH_LED_HDRM_SNS_ENABLE_MASK, |
| 1693 | FLASH_LED_HDRM_SNS_ENABLE); |
| 1694 | if (rc) { |
| 1695 | dev_err(&led->pdev->dev, |
| 1696 | "Headroom sense disable failed\n"); |
| 1697 | goto exit_flash_led_work; |
| 1698 | } |
| 1699 | } else if (flash_node->id == FLASH_LED_1) { |
| 1700 | rc = qpnp_led_masked_write(led, |
| 1701 | FLASH_HDRM_SNS_ENABLE_CTRL1(led->base), |
| 1702 | FLASH_LED_HDRM_SNS_ENABLE_MASK, |
| 1703 | FLASH_LED_HDRM_SNS_ENABLE); |
| 1704 | if (rc) { |
| 1705 | dev_err(&led->pdev->dev, |
| 1706 | "Headroom sense disable failed\n"); |
| 1707 | goto exit_flash_led_work; |
| 1708 | } |
| 1709 | } |
| 1710 | } |
| 1711 | |
| 1712 | rc = qpnp_led_masked_write(led, |
| 1713 | FLASH_LED_STROBE_CTRL(led->base), |
| 1714 | (flash_node->id == FLASH_LED_SWITCH ? FLASH_STROBE_MASK |
| 1715 | | FLASH_LED_STROBE_TYPE_HW |
| 1716 | : flash_node->trigger | |
| 1717 | FLASH_LED_STROBE_TYPE_HW), |
| 1718 | flash_node->trigger); |
| 1719 | if (rc) { |
| 1720 | dev_err(&led->pdev->dev, "Strobe reg write failed\n"); |
| 1721 | goto exit_flash_led_work; |
| 1722 | } |
| 1723 | |
| 1724 | if (led->strobe_debug && led->dbg_feature_en) { |
| 1725 | udelay(2000); |
| 1726 | rc = regmap_read(led->regmap, |
| 1727 | FLASH_LED_FAULT_STATUS(led->base), |
| 1728 | &temp); |
| 1729 | if (rc) { |
| 1730 | dev_err(&led->pdev->dev, |
| 1731 | "Unable to read from addr= %x, rc(%d)\n", |
| 1732 | FLASH_LED_FAULT_STATUS(led->base), rc); |
| 1733 | goto exit_flash_led_work; |
| 1734 | } |
| 1735 | led->fault_reg = temp; |
| 1736 | } |
| 1737 | } else { |
| 1738 | pr_err("Both Torch and Flash cannot be select at same time\n"); |
| 1739 | for (i = 0; i < led->num_leds; i++) |
| 1740 | led->flash_node[i].flash_on = false; |
| 1741 | goto turn_off; |
| 1742 | } |
| 1743 | |
| 1744 | flash_node->flash_on = true; |
| 1745 | mutex_unlock(&led->flash_led_lock); |
| 1746 | |
| 1747 | return; |
| 1748 | |
| 1749 | turn_off: |
| 1750 | if (led->flash_node[led->num_leds - 1].id == FLASH_LED_SWITCH && |
| 1751 | flash_node->id != FLASH_LED_SWITCH) |
| 1752 | led->flash_node[led->num_leds - 1].trigger &= |
| 1753 | ~(0x80 >> flash_node->id); |
| 1754 | if (flash_node->type == TORCH) { |
| 1755 | /* |
| 1756 | * Checking LED fault status detects hardware open fault. |
| 1757 | * If fault occurs, all subsequent LED enablement requests |
| 1758 | * will be rejected to protect hardware. |
| 1759 | */ |
| 1760 | rc = regmap_read(led->regmap, |
| 1761 | FLASH_LED_FAULT_STATUS(led->base), &temp); |
| 1762 | if (rc) { |
| 1763 | dev_err(&led->pdev->dev, |
| 1764 | "Failed to read out fault status register\n"); |
| 1765 | goto exit_flash_led_work; |
| 1766 | } |
| 1767 | |
| 1768 | led->open_fault |= (val & FLASH_LED_OPEN_FAULT_DETECTED); |
| 1769 | } |
| 1770 | |
| 1771 | rc = qpnp_led_masked_write(led, |
| 1772 | FLASH_LED_STROBE_CTRL(led->base), |
| 1773 | (flash_node->id == FLASH_LED_SWITCH ? FLASH_STROBE_MASK |
| 1774 | | FLASH_LED_STROBE_TYPE_HW |
| 1775 | : flash_node->trigger |
| 1776 | | FLASH_LED_STROBE_TYPE_HW), |
| 1777 | FLASH_LED_DISABLE); |
| 1778 | if (rc) { |
| 1779 | dev_err(&led->pdev->dev, "Strobe disable failed\n"); |
| 1780 | goto exit_flash_led_work; |
| 1781 | } |
| 1782 | |
| 1783 | usleep_range(FLASH_RAMP_DN_DELAY_US_MIN, FLASH_RAMP_DN_DELAY_US_MAX); |
| 1784 | exit_flash_hdrm_sns: |
| 1785 | if (led->pdata->hdrm_sns_ch0_en) { |
| 1786 | if (flash_node->id == FLASH_LED_0 || |
| 1787 | flash_node->id == FLASH_LED_SWITCH) { |
| 1788 | rc = qpnp_led_masked_write(led, |
| 1789 | FLASH_HDRM_SNS_ENABLE_CTRL0(led->base), |
| 1790 | FLASH_LED_HDRM_SNS_ENABLE_MASK, |
| 1791 | FLASH_LED_HDRM_SNS_DISABLE); |
| 1792 | if (rc) { |
| 1793 | dev_err(&led->pdev->dev, |
| 1794 | "Headroom sense disable failed\n"); |
| 1795 | goto exit_flash_hdrm_sns; |
| 1796 | } |
| 1797 | } |
| 1798 | } |
| 1799 | |
| 1800 | if (led->pdata->hdrm_sns_ch1_en) { |
| 1801 | if (flash_node->id == FLASH_LED_1 || |
| 1802 | flash_node->id == FLASH_LED_SWITCH) { |
| 1803 | rc = qpnp_led_masked_write(led, |
| 1804 | FLASH_HDRM_SNS_ENABLE_CTRL1(led->base), |
| 1805 | FLASH_LED_HDRM_SNS_ENABLE_MASK, |
| 1806 | FLASH_LED_HDRM_SNS_DISABLE); |
| 1807 | if (rc) { |
| 1808 | dev_err(&led->pdev->dev, |
| 1809 | "Headroom sense disable failed\n"); |
| 1810 | goto exit_flash_hdrm_sns; |
| 1811 | } |
| 1812 | } |
| 1813 | } |
| 1814 | exit_flash_led_work: |
| 1815 | rc = qpnp_flash_led_module_disable(led, flash_node); |
| 1816 | if (rc) { |
| 1817 | dev_err(&led->pdev->dev, "Module disable failed\n"); |
| 1818 | goto exit_flash_led_work; |
| 1819 | } |
| 1820 | error_enable_gpio: |
| 1821 | if (flash_node->flash_on && flash_node->num_regulators > 0) |
| 1822 | flash_regulator_enable(led, flash_node, false); |
| 1823 | |
| 1824 | flash_node->flash_on = false; |
| 1825 | mutex_unlock(&led->flash_led_lock); |
| 1826 | } |
| 1827 | |
| 1828 | static void qpnp_flash_led_brightness_set(struct led_classdev *led_cdev, |
| 1829 | enum led_brightness value) |
| 1830 | { |
| 1831 | struct flash_node_data *flash_node; |
| 1832 | struct qpnp_flash_led *led; |
| 1833 | |
| 1834 | flash_node = container_of(led_cdev, struct flash_node_data, cdev); |
| 1835 | led = dev_get_drvdata(&flash_node->pdev->dev); |
| 1836 | |
| 1837 | if (value < LED_OFF) { |
| 1838 | pr_err("Invalid brightness value\n"); |
| 1839 | return; |
| 1840 | } |
| 1841 | |
| 1842 | if (value > flash_node->cdev.max_brightness) |
| 1843 | value = flash_node->cdev.max_brightness; |
| 1844 | |
| 1845 | flash_node->cdev.brightness = value; |
| 1846 | if (led->flash_node[led->num_leds - 1].id == |
| 1847 | FLASH_LED_SWITCH) { |
| 1848 | if (flash_node->type == TORCH) |
| 1849 | led->flash_node[led->num_leds - 1].type = TORCH; |
| 1850 | else if (flash_node->type == FLASH) |
| 1851 | led->flash_node[led->num_leds - 1].type = FLASH; |
| 1852 | |
| 1853 | led->flash_node[led->num_leds - 1].max_current |
| 1854 | = flash_node->max_current; |
| 1855 | |
| 1856 | if (flash_node->id == FLASH_LED_0 || |
| 1857 | flash_node->id == FLASH_LED_1) { |
| 1858 | if (value < FLASH_LED_MIN_CURRENT_MA && value != 0) |
| 1859 | value = FLASH_LED_MIN_CURRENT_MA; |
| 1860 | |
| 1861 | flash_node->prgm_current = value; |
| 1862 | flash_node->flash_on = value ? true : false; |
| 1863 | } else if (flash_node->id == FLASH_LED_SWITCH) { |
| 1864 | if (!value) { |
| 1865 | flash_node->prgm_current = 0; |
| 1866 | flash_node->prgm_current2 = 0; |
| 1867 | } |
| 1868 | } |
| 1869 | } else { |
| 1870 | if (value < FLASH_LED_MIN_CURRENT_MA && value != 0) |
| 1871 | value = FLASH_LED_MIN_CURRENT_MA; |
| 1872 | flash_node->prgm_current = value; |
| 1873 | } |
| 1874 | |
| 1875 | queue_work(led->ordered_workq, &flash_node->work); |
| 1876 | } |
| 1877 | |
| 1878 | static int qpnp_flash_led_init_settings(struct qpnp_flash_led *led) |
| 1879 | { |
| 1880 | int rc; |
| 1881 | u8 val, temp_val; |
| 1882 | uint val_int; |
| 1883 | |
| 1884 | rc = qpnp_led_masked_write(led, |
| 1885 | FLASH_MODULE_ENABLE_CTRL(led->base), |
| 1886 | FLASH_MODULE_ENABLE_MASK, |
| 1887 | FLASH_LED_MODULE_CTRL_DEFAULT); |
| 1888 | if (rc) { |
| 1889 | dev_err(&led->pdev->dev, "Module disable failed\n"); |
| 1890 | return rc; |
| 1891 | } |
| 1892 | |
| 1893 | rc = qpnp_led_masked_write(led, |
| 1894 | FLASH_LED_STROBE_CTRL(led->base), |
| 1895 | FLASH_STROBE_MASK, FLASH_LED_DISABLE); |
| 1896 | if (rc) { |
| 1897 | dev_err(&led->pdev->dev, "Strobe disable failed\n"); |
| 1898 | return rc; |
| 1899 | } |
| 1900 | |
| 1901 | rc = qpnp_led_masked_write(led, |
| 1902 | FLASH_LED_TMR_CTRL(led->base), |
| 1903 | FLASH_TMR_MASK, FLASH_TMR_SAFETY); |
| 1904 | if (rc) { |
| 1905 | dev_err(&led->pdev->dev, |
| 1906 | "LED timer ctrl reg write failed(%d)\n", rc); |
| 1907 | return rc; |
| 1908 | } |
| 1909 | |
| 1910 | val = (u8)(led->pdata->headroom / FLASH_LED_HEADROOM_DIVIDER - |
| 1911 | FLASH_LED_HEADROOM_OFFSET); |
| 1912 | rc = qpnp_led_masked_write(led, |
| 1913 | FLASH_HEADROOM(led->base), |
| 1914 | FLASH_HEADROOM_MASK, val); |
| 1915 | if (rc) { |
| 1916 | dev_err(&led->pdev->dev, "Headroom reg write failed\n"); |
| 1917 | return rc; |
| 1918 | } |
| 1919 | |
| 1920 | val = qpnp_flash_led_get_startup_dly(led->pdata->startup_dly); |
| 1921 | |
| 1922 | rc = qpnp_led_masked_write(led, |
| 1923 | FLASH_STARTUP_DELAY(led->base), |
| 1924 | FLASH_STARTUP_DLY_MASK, val); |
| 1925 | if (rc) { |
| 1926 | dev_err(&led->pdev->dev, "Startup delay reg write failed\n"); |
| 1927 | return rc; |
| 1928 | } |
| 1929 | |
| 1930 | val = (u8)(led->pdata->clamp_current * FLASH_MAX_LEVEL / |
| 1931 | FLASH_LED_MAX_CURRENT_MA); |
| 1932 | rc = qpnp_led_masked_write(led, |
| 1933 | FLASH_CLAMP_CURRENT(led->base), |
| 1934 | FLASH_CURRENT_MASK, val); |
| 1935 | if (rc) { |
| 1936 | dev_err(&led->pdev->dev, "Clamp current reg write failed\n"); |
| 1937 | return rc; |
| 1938 | } |
| 1939 | |
| 1940 | if (led->pdata->pmic_charger_support) |
| 1941 | val = FLASH_LED_FLASH_HW_VREG_OK; |
| 1942 | else |
| 1943 | val = FLASH_LED_FLASH_SW_VREG_OK; |
| 1944 | rc = qpnp_led_masked_write(led, |
| 1945 | FLASH_VREG_OK_FORCE(led->base), |
| 1946 | FLASH_VREG_OK_FORCE_MASK, val); |
| 1947 | if (rc) { |
| 1948 | dev_err(&led->pdev->dev, "VREG OK force reg write failed\n"); |
| 1949 | return rc; |
| 1950 | } |
| 1951 | |
| 1952 | if (led->pdata->self_check_en) |
| 1953 | val = FLASH_MODULE_ENABLE; |
| 1954 | else |
| 1955 | val = FLASH_LED_DISABLE; |
| 1956 | rc = qpnp_led_masked_write(led, |
| 1957 | FLASH_FAULT_DETECT(led->base), |
| 1958 | FLASH_FAULT_DETECT_MASK, val); |
| 1959 | if (rc) { |
| 1960 | dev_err(&led->pdev->dev, "Fault detect reg write failed\n"); |
| 1961 | return rc; |
| 1962 | } |
| 1963 | |
| 1964 | val = 0x0; |
| 1965 | val |= led->pdata->mask3_en << FLASH_LED_MASK3_ENABLE_SHIFT; |
| 1966 | val |= FLASH_LED_MASK_MODULE_MASK2_ENABLE; |
| 1967 | rc = qpnp_led_masked_write(led, FLASH_MASK_ENABLE(led->base), |
| 1968 | FLASH_MASK_MODULE_CONTRL_MASK, val); |
| 1969 | if (rc) { |
| 1970 | dev_err(&led->pdev->dev, "Mask module enable failed\n"); |
| 1971 | return rc; |
| 1972 | } |
| 1973 | |
| 1974 | rc = regmap_read(led->regmap, FLASH_PERPH_RESET_CTRL(led->base), |
| 1975 | &val_int); |
| 1976 | if (rc) { |
| 1977 | dev_err(&led->pdev->dev, |
| 1978 | "Unable to read from address %x, rc(%d)\n", |
| 1979 | FLASH_PERPH_RESET_CTRL(led->base), rc); |
| 1980 | return -EINVAL; |
| 1981 | } |
| 1982 | val = (u8)val_int; |
| 1983 | |
| 1984 | if (led->pdata->follow_rb_disable) { |
| 1985 | rc = qpnp_led_masked_write(led, |
| 1986 | FLASH_LED_UNLOCK_SECURE(led->base), |
| 1987 | FLASH_SECURE_MASK, FLASH_UNLOCK_SECURE); |
| 1988 | if (rc) { |
| 1989 | dev_err(&led->pdev->dev, "Secure reg write failed\n"); |
| 1990 | return -EINVAL; |
| 1991 | } |
| 1992 | |
| 1993 | val |= FLASH_FOLLOW_OTST2_RB_MASK; |
| 1994 | rc = qpnp_led_masked_write(led, |
| 1995 | FLASH_PERPH_RESET_CTRL(led->base), |
| 1996 | FLASH_FOLLOW_OTST2_RB_MASK, val); |
| 1997 | if (rc) { |
| 1998 | dev_err(&led->pdev->dev, |
| 1999 | "failed to reset OTST2_RB bit\n"); |
| 2000 | return rc; |
| 2001 | } |
| 2002 | } else { |
| 2003 | rc = qpnp_led_masked_write(led, |
| 2004 | FLASH_LED_UNLOCK_SECURE(led->base), |
| 2005 | FLASH_SECURE_MASK, FLASH_UNLOCK_SECURE); |
| 2006 | if (rc) { |
| 2007 | dev_err(&led->pdev->dev, "Secure reg write failed\n"); |
| 2008 | return -EINVAL; |
| 2009 | } |
| 2010 | |
| 2011 | val &= ~FLASH_FOLLOW_OTST2_RB_MASK; |
| 2012 | rc = qpnp_led_masked_write(led, |
| 2013 | FLASH_PERPH_RESET_CTRL(led->base), |
| 2014 | FLASH_FOLLOW_OTST2_RB_MASK, val); |
| 2015 | if (rc) { |
| 2016 | dev_err(&led->pdev->dev, |
| 2017 | "failed to reset OTST2_RB bit\n"); |
| 2018 | return rc; |
| 2019 | } |
| 2020 | } |
| 2021 | |
| 2022 | if (!led->pdata->thermal_derate_en) |
| 2023 | val = 0x0; |
| 2024 | else { |
| 2025 | val = led->pdata->thermal_derate_en << 7; |
| 2026 | val |= led->pdata->thermal_derate_rate << 3; |
| 2027 | val |= (led->pdata->thermal_derate_threshold - |
| 2028 | FLASH_LED_THERMAL_THRESHOLD_MIN) / |
| 2029 | FLASH_LED_THERMAL_DEVIDER; |
| 2030 | } |
| 2031 | rc = qpnp_led_masked_write(led, |
| 2032 | FLASH_THERMAL_DRATE(led->base), |
| 2033 | FLASH_THERMAL_DERATE_MASK, val); |
| 2034 | if (rc) { |
| 2035 | dev_err(&led->pdev->dev, "Thermal derate reg write failed\n"); |
| 2036 | return rc; |
| 2037 | } |
| 2038 | |
| 2039 | if (!led->pdata->current_ramp_en) |
| 2040 | val = 0x0; |
| 2041 | else { |
| 2042 | val = led->pdata->current_ramp_en << 7; |
| 2043 | val |= led->pdata->ramp_up_step << 3; |
| 2044 | val |= led->pdata->ramp_dn_step; |
| 2045 | } |
| 2046 | rc = qpnp_led_masked_write(led, |
| 2047 | FLASH_CURRENT_RAMP(led->base), |
| 2048 | FLASH_CURRENT_RAMP_MASK, val); |
| 2049 | if (rc) { |
| 2050 | dev_err(&led->pdev->dev, "Current ramp reg write failed\n"); |
| 2051 | return rc; |
| 2052 | } |
| 2053 | |
| 2054 | if (!led->pdata->vph_pwr_droop_en) |
| 2055 | val = 0x0; |
| 2056 | else { |
| 2057 | val = led->pdata->vph_pwr_droop_en << 7; |
| 2058 | val |= ((led->pdata->vph_pwr_droop_threshold - |
| 2059 | FLASH_LED_VPH_DROOP_THRESHOLD_MIN_MV) / |
| 2060 | FLASH_LED_VPH_DROOP_THRESHOLD_DIVIDER) << 4; |
| 2061 | temp_val = |
| 2062 | qpnp_flash_led_get_droop_debounce_time( |
| 2063 | led->pdata->vph_pwr_droop_debounce_time); |
| 2064 | if (temp_val == 0xFF) { |
| 2065 | dev_err(&led->pdev->dev, "Invalid debounce time\n"); |
| 2066 | return temp_val; |
| 2067 | } |
| 2068 | |
| 2069 | val |= temp_val; |
| 2070 | } |
| 2071 | rc = qpnp_led_masked_write(led, |
| 2072 | FLASH_VPH_PWR_DROOP(led->base), |
| 2073 | FLASH_VPH_PWR_DROOP_MASK, val); |
| 2074 | if (rc) { |
| 2075 | dev_err(&led->pdev->dev, "VPH PWR droop reg write failed\n"); |
| 2076 | return rc; |
| 2077 | } |
| 2078 | |
| 2079 | led->battery_psy = power_supply_get_by_name("battery"); |
| 2080 | if (!led->battery_psy) { |
| 2081 | dev_err(&led->pdev->dev, |
| 2082 | "Failed to get battery power supply\n"); |
| 2083 | return -EINVAL; |
| 2084 | } |
| 2085 | |
| 2086 | return 0; |
| 2087 | } |
| 2088 | |
| 2089 | static int qpnp_flash_led_parse_each_led_dt(struct qpnp_flash_led *led, |
| 2090 | struct flash_node_data *flash_node) |
| 2091 | { |
| 2092 | const char *temp_string; |
| 2093 | struct device_node *node = flash_node->cdev.dev->of_node; |
| 2094 | struct device_node *temp = NULL; |
| 2095 | int rc = 0, num_regs = 0; |
| 2096 | u32 val; |
| 2097 | |
| 2098 | rc = of_property_read_string(node, "label", &temp_string); |
| 2099 | if (!rc) { |
| 2100 | if (strcmp(temp_string, "flash") == 0) |
| 2101 | flash_node->type = FLASH; |
| 2102 | else if (strcmp(temp_string, "torch") == 0) |
| 2103 | flash_node->type = TORCH; |
| 2104 | else if (strcmp(temp_string, "switch") == 0) |
| 2105 | flash_node->type = SWITCH; |
| 2106 | else { |
| 2107 | dev_err(&led->pdev->dev, "Wrong flash LED type\n"); |
| 2108 | return -EINVAL; |
| 2109 | } |
| 2110 | } else if (rc < 0) { |
| 2111 | dev_err(&led->pdev->dev, "Unable to read flash type\n"); |
| 2112 | return rc; |
| 2113 | } |
| 2114 | |
| 2115 | rc = of_property_read_u32(node, "qcom,current", &val); |
| 2116 | if (!rc) { |
| 2117 | if (val < FLASH_LED_MIN_CURRENT_MA) |
| 2118 | val = FLASH_LED_MIN_CURRENT_MA; |
| 2119 | flash_node->prgm_current = val; |
| 2120 | } else if (rc != -EINVAL) { |
| 2121 | dev_err(&led->pdev->dev, "Unable to read current\n"); |
| 2122 | return rc; |
| 2123 | } |
| 2124 | |
| 2125 | rc = of_property_read_u32(node, "qcom,id", &val); |
| 2126 | if (!rc) |
| 2127 | flash_node->id = (u8)val; |
| 2128 | else if (rc != -EINVAL) { |
| 2129 | dev_err(&led->pdev->dev, "Unable to read led ID\n"); |
| 2130 | return rc; |
| 2131 | } |
| 2132 | |
| 2133 | if (flash_node->type == SWITCH || flash_node->type == FLASH) { |
| 2134 | rc = of_property_read_u32(node, "qcom,duration", &val); |
| 2135 | if (!rc) |
| 2136 | flash_node->duration = (u16)val; |
| 2137 | else if (rc != -EINVAL) { |
| 2138 | dev_err(&led->pdev->dev, "Unable to read duration\n"); |
| 2139 | return rc; |
| 2140 | } |
| 2141 | } |
| 2142 | |
| 2143 | switch (led->peripheral_type) { |
| 2144 | case FLASH_SUBTYPE_SINGLE: |
| 2145 | flash_node->trigger = FLASH_LED0_TRIGGER; |
| 2146 | break; |
| 2147 | case FLASH_SUBTYPE_DUAL: |
| 2148 | if (flash_node->id == FLASH_LED_0) |
| 2149 | flash_node->trigger = FLASH_LED0_TRIGGER; |
| 2150 | else if (flash_node->id == FLASH_LED_1) |
| 2151 | flash_node->trigger = FLASH_LED1_TRIGGER; |
| 2152 | break; |
| 2153 | default: |
| 2154 | dev_err(&led->pdev->dev, "Invalid peripheral type\n"); |
| 2155 | } |
| 2156 | |
| 2157 | while ((temp = of_get_next_child(node, temp))) { |
| 2158 | if (of_find_property(temp, "regulator-name", NULL)) |
| 2159 | num_regs++; |
| 2160 | } |
| 2161 | |
| 2162 | if (num_regs) |
| 2163 | flash_node->num_regulators = num_regs; |
| 2164 | |
| 2165 | return rc; |
| 2166 | } |
| 2167 | |
| 2168 | static int qpnp_flash_led_parse_common_dt( |
| 2169 | struct qpnp_flash_led *led, |
| 2170 | struct device_node *node) |
| 2171 | { |
| 2172 | int rc; |
| 2173 | u32 val, temp_val; |
| 2174 | const char *temp; |
| 2175 | |
| 2176 | led->pdata->headroom = FLASH_LED_HEADROOM_DEFAULT_MV; |
| 2177 | rc = of_property_read_u32(node, "qcom,headroom", &val); |
| 2178 | if (!rc) |
| 2179 | led->pdata->headroom = (u16)val; |
| 2180 | else if (rc != -EINVAL) { |
| 2181 | dev_err(&led->pdev->dev, "Unable to read headroom\n"); |
| 2182 | return rc; |
| 2183 | } |
| 2184 | |
| 2185 | led->pdata->startup_dly = FLASH_LED_STARTUP_DELAY_DEFAULT_US; |
| 2186 | rc = of_property_read_u32(node, "qcom,startup-dly", &val); |
| 2187 | if (!rc) |
| 2188 | led->pdata->startup_dly = (u8)val; |
| 2189 | else if (rc != -EINVAL) { |
| 2190 | dev_err(&led->pdev->dev, "Unable to read startup delay\n"); |
| 2191 | return rc; |
| 2192 | } |
| 2193 | |
| 2194 | led->pdata->clamp_current = FLASH_LED_CLAMP_CURRENT_DEFAULT_MA; |
| 2195 | rc = of_property_read_u32(node, "qcom,clamp-current", &val); |
| 2196 | if (!rc) { |
| 2197 | if (val < FLASH_LED_MIN_CURRENT_MA) |
| 2198 | val = FLASH_LED_MIN_CURRENT_MA; |
| 2199 | led->pdata->clamp_current = (u16)val; |
| 2200 | } else if (rc != -EINVAL) { |
| 2201 | dev_err(&led->pdev->dev, "Unable to read clamp current\n"); |
| 2202 | return rc; |
| 2203 | } |
| 2204 | |
| 2205 | led->pdata->pmic_charger_support = |
| 2206 | of_property_read_bool(node, |
| 2207 | "qcom,pmic-charger-support"); |
| 2208 | |
| 2209 | led->pdata->self_check_en = |
| 2210 | of_property_read_bool(node, "qcom,self-check-enabled"); |
| 2211 | |
| 2212 | led->pdata->thermal_derate_en = |
| 2213 | of_property_read_bool(node, |
| 2214 | "qcom,thermal-derate-enabled"); |
| 2215 | |
| 2216 | if (led->pdata->thermal_derate_en) { |
| 2217 | led->pdata->thermal_derate_rate = |
| 2218 | FLASH_LED_THERMAL_DERATE_RATE_DEFAULT_PERCENT; |
| 2219 | rc = of_property_read_string(node, "qcom,thermal-derate-rate", |
| 2220 | &temp); |
| 2221 | if (!rc) { |
| 2222 | temp_val = |
| 2223 | qpnp_flash_led_get_thermal_derate_rate(temp); |
| 2224 | if (temp_val < 0) { |
| 2225 | dev_err(&led->pdev->dev, |
| 2226 | "Invalid thermal derate rate\n"); |
| 2227 | return -EINVAL; |
| 2228 | } |
Kiran Gunda | 183d58f | 2017-11-14 15:24:50 +0530 | [diff] [blame] | 2229 | led->pdata->thermal_derate_rate = (u8)temp_val; |
| 2230 | } else { |
| 2231 | dev_err(&led->pdev->dev, |
| 2232 | "Unable to read thermal derate rate\n"); |
| 2233 | return -EINVAL; |
| 2234 | } |
| 2235 | |
| 2236 | led->pdata->thermal_derate_threshold = |
| 2237 | FLASH_LED_THERMAL_DERATE_THRESHOLD_DEFAULT_C; |
| 2238 | rc = of_property_read_u32(node, "qcom,thermal-derate-threshold", |
| 2239 | &val); |
| 2240 | if (!rc) |
| 2241 | led->pdata->thermal_derate_threshold = (u8)val; |
| 2242 | else if (rc != -EINVAL) { |
| 2243 | dev_err(&led->pdev->dev, |
| 2244 | "Unable to read thermal derate threshold\n"); |
| 2245 | return rc; |
| 2246 | } |
| 2247 | } |
| 2248 | |
| 2249 | led->pdata->current_ramp_en = |
| 2250 | of_property_read_bool(node, |
| 2251 | "qcom,current-ramp-enabled"); |
| 2252 | if (led->pdata->current_ramp_en) { |
| 2253 | led->pdata->ramp_up_step = FLASH_LED_RAMP_UP_STEP_DEFAULT_US; |
| 2254 | rc = of_property_read_string(node, "qcom,ramp_up_step", &temp); |
| 2255 | if (!rc) { |
| 2256 | temp_val = qpnp_flash_led_get_ramp_step(temp); |
| 2257 | if (temp_val < 0) { |
| 2258 | dev_err(&led->pdev->dev, |
| 2259 | "Invalid ramp up step values\n"); |
| 2260 | return -EINVAL; |
| 2261 | } |
| 2262 | led->pdata->ramp_up_step = (u8)temp_val; |
| 2263 | } else if (rc != -EINVAL) { |
| 2264 | dev_err(&led->pdev->dev, |
| 2265 | "Unable to read ramp up steps\n"); |
| 2266 | return rc; |
| 2267 | } |
| 2268 | |
| 2269 | led->pdata->ramp_dn_step = FLASH_LED_RAMP_DN_STEP_DEFAULT_US; |
| 2270 | rc = of_property_read_string(node, "qcom,ramp_dn_step", &temp); |
| 2271 | if (!rc) { |
| 2272 | temp_val = qpnp_flash_led_get_ramp_step(temp); |
| 2273 | if (temp_val < 0) { |
| 2274 | dev_err(&led->pdev->dev, |
| 2275 | "Invalid ramp down step values\n"); |
| 2276 | return rc; |
| 2277 | } |
| 2278 | led->pdata->ramp_dn_step = (u8)temp_val; |
| 2279 | } else if (rc != -EINVAL) { |
| 2280 | dev_err(&led->pdev->dev, |
| 2281 | "Unable to read ramp down steps\n"); |
| 2282 | return rc; |
| 2283 | } |
| 2284 | } |
| 2285 | |
| 2286 | led->pdata->vph_pwr_droop_en = of_property_read_bool(node, |
| 2287 | "qcom,vph-pwr-droop-enabled"); |
| 2288 | if (led->pdata->vph_pwr_droop_en) { |
| 2289 | led->pdata->vph_pwr_droop_threshold = |
| 2290 | FLASH_LED_VPH_PWR_DROOP_THRESHOLD_DEFAULT_MV; |
| 2291 | rc = of_property_read_u32(node, |
| 2292 | "qcom,vph-pwr-droop-threshold", &val); |
| 2293 | if (!rc) { |
| 2294 | led->pdata->vph_pwr_droop_threshold = (u16)val; |
| 2295 | } else if (rc != -EINVAL) { |
| 2296 | dev_err(&led->pdev->dev, |
| 2297 | "Unable to read VPH PWR droop threshold\n"); |
| 2298 | return rc; |
| 2299 | } |
| 2300 | |
| 2301 | led->pdata->vph_pwr_droop_debounce_time = |
| 2302 | FLASH_LED_VPH_PWR_DROOP_DEBOUNCE_TIME_DEFAULT_US; |
| 2303 | rc = of_property_read_u32(node, |
| 2304 | "qcom,vph-pwr-droop-debounce-time", &val); |
| 2305 | if (!rc) |
| 2306 | led->pdata->vph_pwr_droop_debounce_time = (u8)val; |
| 2307 | else if (rc != -EINVAL) { |
| 2308 | dev_err(&led->pdev->dev, |
| 2309 | "Unable to read VPH PWR droop debounce time\n"); |
| 2310 | return rc; |
| 2311 | } |
| 2312 | } |
| 2313 | |
| 2314 | led->pdata->hdrm_sns_ch0_en = of_property_read_bool(node, |
| 2315 | "qcom,headroom-sense-ch0-enabled"); |
| 2316 | |
| 2317 | led->pdata->hdrm_sns_ch1_en = of_property_read_bool(node, |
| 2318 | "qcom,headroom-sense-ch1-enabled"); |
| 2319 | |
| 2320 | led->pdata->power_detect_en = of_property_read_bool(node, |
| 2321 | "qcom,power-detect-enabled"); |
| 2322 | |
| 2323 | led->pdata->mask3_en = of_property_read_bool(node, |
| 2324 | "qcom,otst2-module-enabled"); |
| 2325 | |
| 2326 | led->pdata->follow_rb_disable = of_property_read_bool(node, |
| 2327 | "qcom,follow-otst2-rb-disabled"); |
| 2328 | |
| 2329 | led->pdata->die_current_derate_en = of_property_read_bool(node, |
| 2330 | "qcom,die-current-derate-enabled"); |
| 2331 | |
| 2332 | if (led->pdata->die_current_derate_en) { |
| 2333 | led->vadc_dev = qpnp_get_vadc(&led->pdev->dev, "die-temp"); |
| 2334 | if (IS_ERR(led->vadc_dev)) { |
| 2335 | pr_err("VADC channel property Missing\n"); |
| 2336 | return -EINVAL; |
| 2337 | } |
| 2338 | |
| 2339 | if (of_find_property(node, "qcom,die-temp-threshold", |
| 2340 | &led->pdata->temp_threshold_num)) { |
| 2341 | if (led->pdata->temp_threshold_num > 0) { |
| 2342 | led->pdata->die_temp_threshold_degc = |
| 2343 | devm_kzalloc(&led->pdev->dev, |
| 2344 | led->pdata->temp_threshold_num, |
| 2345 | GFP_KERNEL); |
| 2346 | |
| 2347 | if (led->pdata->die_temp_threshold_degc |
| 2348 | == NULL) { |
| 2349 | dev_err(&led->pdev->dev, |
| 2350 | "failed to allocate die temp array\n"); |
| 2351 | return -ENOMEM; |
| 2352 | } |
| 2353 | led->pdata->temp_threshold_num /= |
| 2354 | sizeof(unsigned int); |
| 2355 | |
| 2356 | rc = of_property_read_u32_array(node, |
| 2357 | "qcom,die-temp-threshold", |
| 2358 | led->pdata->die_temp_threshold_degc, |
| 2359 | led->pdata->temp_threshold_num); |
| 2360 | if (rc) { |
| 2361 | dev_err(&led->pdev->dev, |
| 2362 | "couldn't read temp threshold rc=%d\n", |
| 2363 | rc); |
| 2364 | return rc; |
| 2365 | } |
| 2366 | } |
| 2367 | } |
| 2368 | |
| 2369 | if (of_find_property(node, "qcom,die-temp-derate-current", |
| 2370 | &led->pdata->temp_derate_curr_num)) { |
| 2371 | if (led->pdata->temp_derate_curr_num > 0) { |
| 2372 | led->pdata->die_temp_derate_curr_ma = |
| 2373 | devm_kzalloc(&led->pdev->dev, |
| 2374 | led->pdata->temp_derate_curr_num, |
| 2375 | GFP_KERNEL); |
| 2376 | if (led->pdata->die_temp_derate_curr_ma |
| 2377 | == NULL) { |
| 2378 | dev_err(&led->pdev->dev, |
| 2379 | "failed to allocate die derate current array\n"); |
| 2380 | return -ENOMEM; |
| 2381 | } |
| 2382 | led->pdata->temp_derate_curr_num /= |
| 2383 | sizeof(unsigned int); |
| 2384 | |
| 2385 | rc = of_property_read_u32_array(node, |
| 2386 | "qcom,die-temp-derate-current", |
| 2387 | led->pdata->die_temp_derate_curr_ma, |
| 2388 | led->pdata->temp_derate_curr_num); |
| 2389 | if (rc) { |
| 2390 | dev_err(&led->pdev->dev, |
| 2391 | "couldn't read temp limits rc =%d\n", |
| 2392 | rc); |
| 2393 | return rc; |
| 2394 | } |
| 2395 | } |
| 2396 | } |
| 2397 | if (led->pdata->temp_threshold_num != |
| 2398 | led->pdata->temp_derate_curr_num) { |
| 2399 | pr_err("Both array size are not same\n"); |
| 2400 | return -EINVAL; |
| 2401 | } |
| 2402 | } |
| 2403 | |
| 2404 | led->pinctrl = devm_pinctrl_get(&led->pdev->dev); |
| 2405 | if (IS_ERR_OR_NULL(led->pinctrl)) { |
| 2406 | dev_err(&led->pdev->dev, "Unable to acquire pinctrl\n"); |
| 2407 | led->pinctrl = NULL; |
| 2408 | return 0; |
| 2409 | } |
| 2410 | |
| 2411 | led->gpio_state_active = pinctrl_lookup_state(led->pinctrl, |
| 2412 | "flash_led_enable"); |
| 2413 | if (IS_ERR_OR_NULL(led->gpio_state_active)) { |
| 2414 | dev_err(&led->pdev->dev, "Cannot lookup LED active state\n"); |
| 2415 | devm_pinctrl_put(led->pinctrl); |
| 2416 | led->pinctrl = NULL; |
| 2417 | return PTR_ERR(led->gpio_state_active); |
| 2418 | } |
| 2419 | |
| 2420 | led->gpio_state_suspend = pinctrl_lookup_state(led->pinctrl, |
| 2421 | "flash_led_disable"); |
| 2422 | if (IS_ERR_OR_NULL(led->gpio_state_suspend)) { |
| 2423 | dev_err(&led->pdev->dev, "Cannot lookup LED disable state\n"); |
| 2424 | devm_pinctrl_put(led->pinctrl); |
| 2425 | led->pinctrl = NULL; |
| 2426 | return PTR_ERR(led->gpio_state_suspend); |
| 2427 | } |
| 2428 | |
| 2429 | return 0; |
| 2430 | } |
| 2431 | |
| 2432 | static int qpnp_flash_led_probe(struct platform_device *pdev) |
| 2433 | { |
| 2434 | struct qpnp_flash_led *led; |
| 2435 | unsigned int base; |
| 2436 | struct device_node *node, *temp; |
| 2437 | struct dentry *root, *file; |
| 2438 | int rc, i = 0, j, num_leds = 0; |
| 2439 | u32 val; |
| 2440 | |
| 2441 | root = NULL; |
| 2442 | node = pdev->dev.of_node; |
| 2443 | if (node == NULL) { |
| 2444 | dev_info(&pdev->dev, "No flash device defined\n"); |
| 2445 | return -ENODEV; |
| 2446 | } |
| 2447 | |
| 2448 | rc = of_property_read_u32(pdev->dev.of_node, "reg", &base); |
| 2449 | if (rc < 0) { |
| 2450 | dev_err(&pdev->dev, |
| 2451 | "Couldn't find reg in node = %s rc = %d\n", |
| 2452 | pdev->dev.of_node->full_name, rc); |
| 2453 | return rc; |
| 2454 | } |
| 2455 | |
| 2456 | led = devm_kzalloc(&pdev->dev, sizeof(*led), GFP_KERNEL); |
| 2457 | if (!led) |
| 2458 | return -ENOMEM; |
| 2459 | |
| 2460 | led->regmap = dev_get_regmap(pdev->dev.parent, NULL); |
| 2461 | if (!led->regmap) { |
| 2462 | dev_err(&pdev->dev, "Couldn't get parent's regmap\n"); |
| 2463 | return -EINVAL; |
| 2464 | } |
| 2465 | |
| 2466 | led->base = base; |
| 2467 | led->pdev = pdev; |
| 2468 | led->current_addr = FLASH_LED0_CURRENT(led->base); |
| 2469 | led->current2_addr = FLASH_LED1_CURRENT(led->base); |
Kiran Gunda | bf1e6c0 | 2018-01-17 17:50:20 +0530 | [diff] [blame] | 2470 | qpnp_flash_led_prepare = qpnp_flash_led_prepare_v1; |
Kiran Gunda | 183d58f | 2017-11-14 15:24:50 +0530 | [diff] [blame] | 2471 | |
| 2472 | led->pdata = devm_kzalloc(&pdev->dev, sizeof(*led->pdata), GFP_KERNEL); |
| 2473 | if (!led->pdata) |
| 2474 | return -ENOMEM; |
| 2475 | |
Abinaya P | 6d4d850 | 2018-03-15 17:54:36 +0530 | [diff] [blame] | 2476 | rc = qpnp_flash_led_get_peripheral_type(led); |
| 2477 | if (rc < 0) { |
Kiran Gunda | 183d58f | 2017-11-14 15:24:50 +0530 | [diff] [blame] | 2478 | dev_err(&pdev->dev, "Failed to get peripheral type\n"); |
| 2479 | return rc; |
| 2480 | } |
Abinaya P | 6d4d850 | 2018-03-15 17:54:36 +0530 | [diff] [blame] | 2481 | led->peripheral_type = (u8) rc; |
Kiran Gunda | 183d58f | 2017-11-14 15:24:50 +0530 | [diff] [blame] | 2482 | |
| 2483 | rc = qpnp_flash_led_parse_common_dt(led, node); |
| 2484 | if (rc) { |
| 2485 | dev_err(&pdev->dev, |
| 2486 | "Failed to get common config for flash LEDs\n"); |
| 2487 | return rc; |
| 2488 | } |
| 2489 | |
| 2490 | rc = qpnp_flash_led_init_settings(led); |
| 2491 | if (rc) { |
| 2492 | dev_err(&pdev->dev, "Failed to initialize flash LED\n"); |
| 2493 | return rc; |
| 2494 | } |
| 2495 | |
| 2496 | rc = qpnp_get_pmic_revid(led); |
| 2497 | if (rc) |
| 2498 | return rc; |
| 2499 | |
| 2500 | temp = NULL; |
| 2501 | while ((temp = of_get_next_child(node, temp))) |
| 2502 | num_leds++; |
| 2503 | |
| 2504 | if (!num_leds) |
| 2505 | return -ECHILD; |
| 2506 | |
| 2507 | led->flash_node = devm_kzalloc(&pdev->dev, |
| 2508 | (sizeof(struct flash_node_data) * num_leds), |
| 2509 | GFP_KERNEL); |
| 2510 | if (!led->flash_node) { |
| 2511 | dev_err(&pdev->dev, "Unable to allocate memory\n"); |
| 2512 | return -ENOMEM; |
| 2513 | } |
| 2514 | |
| 2515 | mutex_init(&led->flash_led_lock); |
| 2516 | |
| 2517 | led->ordered_workq = alloc_ordered_workqueue("flash_led_workqueue", 0); |
| 2518 | if (!led->ordered_workq) { |
| 2519 | dev_err(&pdev->dev, "Failed to allocate ordered workqueue\n"); |
| 2520 | return -ENOMEM; |
| 2521 | } |
| 2522 | |
| 2523 | for_each_child_of_node(node, temp) { |
Abinaya P | 6d4d850 | 2018-03-15 17:54:36 +0530 | [diff] [blame] | 2524 | j = -1; |
Kiran Gunda | 183d58f | 2017-11-14 15:24:50 +0530 | [diff] [blame] | 2525 | led->flash_node[i].cdev.brightness_set = |
| 2526 | qpnp_flash_led_brightness_set; |
| 2527 | led->flash_node[i].cdev.brightness_get = |
| 2528 | qpnp_flash_led_brightness_get; |
| 2529 | led->flash_node[i].pdev = pdev; |
| 2530 | |
| 2531 | INIT_WORK(&led->flash_node[i].work, qpnp_flash_led_work); |
| 2532 | rc = of_property_read_string(temp, "qcom,led-name", |
| 2533 | &led->flash_node[i].cdev.name); |
| 2534 | if (rc < 0) { |
| 2535 | dev_err(&led->pdev->dev, |
| 2536 | "Unable to read flash name\n"); |
| 2537 | return rc; |
| 2538 | } |
| 2539 | |
| 2540 | rc = of_property_read_string(temp, "qcom,default-led-trigger", |
| 2541 | &led->flash_node[i].cdev.default_trigger); |
| 2542 | if (rc < 0) { |
| 2543 | dev_err(&led->pdev->dev, |
| 2544 | "Unable to read trigger name\n"); |
| 2545 | return rc; |
| 2546 | } |
| 2547 | |
| 2548 | rc = of_property_read_u32(temp, "qcom,max-current", &val); |
| 2549 | if (!rc) { |
| 2550 | if (val < FLASH_LED_MIN_CURRENT_MA) |
| 2551 | val = FLASH_LED_MIN_CURRENT_MA; |
| 2552 | led->flash_node[i].max_current = (u16)val; |
| 2553 | led->flash_node[i].cdev.max_brightness = val; |
| 2554 | } else { |
| 2555 | dev_err(&led->pdev->dev, |
| 2556 | "Unable to read max current\n"); |
| 2557 | return rc; |
| 2558 | } |
| 2559 | rc = led_classdev_register(&pdev->dev, |
| 2560 | &led->flash_node[i].cdev); |
| 2561 | if (rc) { |
| 2562 | dev_err(&pdev->dev, "Unable to register led\n"); |
| 2563 | goto error_led_register; |
| 2564 | } |
| 2565 | |
| 2566 | led->flash_node[i].cdev.dev->of_node = temp; |
| 2567 | |
| 2568 | rc = qpnp_flash_led_parse_each_led_dt(led, &led->flash_node[i]); |
| 2569 | if (rc) { |
| 2570 | dev_err(&pdev->dev, |
| 2571 | "Failed to parse config for each LED\n"); |
| 2572 | goto error_led_register; |
| 2573 | } |
| 2574 | |
| 2575 | if (led->flash_node[i].num_regulators) { |
| 2576 | rc = flash_regulator_parse_dt(led, &led->flash_node[i]); |
| 2577 | if (rc) { |
| 2578 | dev_err(&pdev->dev, |
| 2579 | "Unable to parse regulator data\n"); |
| 2580 | goto error_led_register; |
| 2581 | } |
| 2582 | |
| 2583 | rc = flash_regulator_setup(led, &led->flash_node[i], |
| 2584 | true); |
| 2585 | if (rc) { |
| 2586 | dev_err(&pdev->dev, |
| 2587 | "Unable to set up regulator\n"); |
| 2588 | goto error_led_register; |
| 2589 | } |
| 2590 | } |
| 2591 | |
| 2592 | for (j = 0; j < ARRAY_SIZE(qpnp_flash_led_attrs); j++) { |
| 2593 | rc = |
| 2594 | sysfs_create_file(&led->flash_node[i].cdev.dev->kobj, |
| 2595 | &qpnp_flash_led_attrs[j].attr); |
| 2596 | if (rc) |
| 2597 | goto error_led_register; |
| 2598 | } |
Kiran Gunda | 183d58f | 2017-11-14 15:24:50 +0530 | [diff] [blame] | 2599 | i++; |
| 2600 | } |
| 2601 | |
| 2602 | led->num_leds = i; |
| 2603 | |
| 2604 | root = debugfs_create_dir("flashLED", NULL); |
| 2605 | if (IS_ERR_OR_NULL(root)) { |
| 2606 | pr_err("Error creating top level directory err%ld", |
| 2607 | (long)root); |
| 2608 | if (PTR_ERR(root) == -ENODEV) |
| 2609 | pr_err("debugfs is not enabled in kernel"); |
Abinaya P | 6d4d850 | 2018-03-15 17:54:36 +0530 | [diff] [blame] | 2610 | goto error_free_led_sysfs; |
Kiran Gunda | 183d58f | 2017-11-14 15:24:50 +0530 | [diff] [blame] | 2611 | } |
| 2612 | |
| 2613 | led->dbgfs_root = root; |
| 2614 | file = debugfs_create_file("enable_debug", 0600, root, led, |
| 2615 | &flash_led_dfs_dbg_feature_fops); |
| 2616 | if (!file) { |
| 2617 | pr_err("error creating 'enable_debug' entry\n"); |
| 2618 | goto error_led_debugfs; |
| 2619 | } |
| 2620 | |
| 2621 | file = debugfs_create_file("latched", 0600, root, led, |
| 2622 | &flash_led_dfs_latched_reg_fops); |
| 2623 | if (!file) { |
| 2624 | pr_err("error creating 'latched' entry\n"); |
| 2625 | goto error_led_debugfs; |
| 2626 | } |
| 2627 | |
| 2628 | file = debugfs_create_file("strobe", 0600, root, led, |
| 2629 | &flash_led_dfs_strobe_reg_fops); |
| 2630 | if (!file) { |
| 2631 | pr_err("error creating 'strobe' entry\n"); |
| 2632 | goto error_led_debugfs; |
| 2633 | } |
| 2634 | |
| 2635 | dev_set_drvdata(&pdev->dev, led); |
| 2636 | |
| 2637 | return 0; |
| 2638 | |
| 2639 | error_led_debugfs: |
Abinaya P | 6d4d850 | 2018-03-15 17:54:36 +0530 | [diff] [blame] | 2640 | debugfs_remove_recursive(root); |
| 2641 | error_free_led_sysfs: |
Kiran Gunda | 183d58f | 2017-11-14 15:24:50 +0530 | [diff] [blame] | 2642 | i = led->num_leds - 1; |
| 2643 | j = ARRAY_SIZE(qpnp_flash_led_attrs) - 1; |
| 2644 | error_led_register: |
| 2645 | for (; i >= 0; i--) { |
| 2646 | for (; j >= 0; j--) |
| 2647 | sysfs_remove_file(&led->flash_node[i].cdev.dev->kobj, |
| 2648 | &qpnp_flash_led_attrs[j].attr); |
| 2649 | j = ARRAY_SIZE(qpnp_flash_led_attrs) - 1; |
| 2650 | led_classdev_unregister(&led->flash_node[i].cdev); |
| 2651 | } |
Kiran Gunda | 183d58f | 2017-11-14 15:24:50 +0530 | [diff] [blame] | 2652 | mutex_destroy(&led->flash_led_lock); |
| 2653 | destroy_workqueue(led->ordered_workq); |
| 2654 | |
| 2655 | return rc; |
| 2656 | } |
| 2657 | |
| 2658 | static int qpnp_flash_led_remove(struct platform_device *pdev) |
| 2659 | { |
| 2660 | struct qpnp_flash_led *led = dev_get_drvdata(&pdev->dev); |
| 2661 | int i, j; |
| 2662 | |
| 2663 | for (i = led->num_leds - 1; i >= 0; i--) { |
| 2664 | if (led->flash_node[i].reg_data) { |
| 2665 | if (led->flash_node[i].flash_on) |
| 2666 | flash_regulator_enable(led, |
| 2667 | &led->flash_node[i], false); |
| 2668 | flash_regulator_setup(led, &led->flash_node[i], |
| 2669 | false); |
| 2670 | } |
| 2671 | for (j = 0; j < ARRAY_SIZE(qpnp_flash_led_attrs); j++) |
| 2672 | sysfs_remove_file(&led->flash_node[i].cdev.dev->kobj, |
| 2673 | &qpnp_flash_led_attrs[j].attr); |
| 2674 | led_classdev_unregister(&led->flash_node[i].cdev); |
| 2675 | } |
| 2676 | debugfs_remove_recursive(led->dbgfs_root); |
| 2677 | mutex_destroy(&led->flash_led_lock); |
| 2678 | destroy_workqueue(led->ordered_workq); |
| 2679 | |
| 2680 | return 0; |
| 2681 | } |
| 2682 | |
| 2683 | static const struct of_device_id spmi_match_table[] = { |
| 2684 | { .compatible = "qcom,qpnp-flash-led",}, |
| 2685 | { }, |
| 2686 | }; |
| 2687 | |
| 2688 | static struct platform_driver qpnp_flash_led_driver = { |
| 2689 | .driver = { |
| 2690 | .name = "qcom,qpnp-flash-led", |
| 2691 | .of_match_table = spmi_match_table, |
| 2692 | }, |
| 2693 | .probe = qpnp_flash_led_probe, |
| 2694 | .remove = qpnp_flash_led_remove, |
| 2695 | }; |
| 2696 | |
| 2697 | static int __init qpnp_flash_led_init(void) |
| 2698 | { |
| 2699 | return platform_driver_register(&qpnp_flash_led_driver); |
| 2700 | } |
| 2701 | late_initcall(qpnp_flash_led_init); |
| 2702 | |
| 2703 | static void __exit qpnp_flash_led_exit(void) |
| 2704 | { |
| 2705 | platform_driver_unregister(&qpnp_flash_led_driver); |
| 2706 | } |
| 2707 | module_exit(qpnp_flash_led_exit); |
| 2708 | |
| 2709 | MODULE_DESCRIPTION("QPNP Flash LED driver"); |
| 2710 | MODULE_LICENSE("GPL v2"); |
| 2711 | MODULE_ALIAS("leds:leds-qpnp-flash"); |