Ramakrishna Pallala | 843735b | 2015-05-04 22:16:07 +0530 | [diff] [blame] | 1 | /* |
| 2 | * axp288_charger.c - X-power AXP288 PMIC Charger driver |
| 3 | * |
| 4 | * Copyright (C) 2014 Intel Corporation |
| 5 | * Author: Ramakrishna Pallala <ramakrishna.pallala@intel.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | */ |
| 16 | |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/device.h> |
| 19 | #include <linux/regmap.h> |
| 20 | #include <linux/workqueue.h> |
| 21 | #include <linux/delay.h> |
| 22 | #include <linux/platform_device.h> |
| 23 | #include <linux/usb/otg.h> |
| 24 | #include <linux/notifier.h> |
| 25 | #include <linux/power_supply.h> |
| 26 | #include <linux/notifier.h> |
| 27 | #include <linux/property.h> |
| 28 | #include <linux/mfd/axp20x.h> |
| 29 | #include <linux/extcon.h> |
| 30 | |
| 31 | #define PS_STAT_VBUS_TRIGGER (1 << 0) |
| 32 | #define PS_STAT_BAT_CHRG_DIR (1 << 2) |
| 33 | #define PS_STAT_VBAT_ABOVE_VHOLD (1 << 3) |
| 34 | #define PS_STAT_VBUS_VALID (1 << 4) |
| 35 | #define PS_STAT_VBUS_PRESENT (1 << 5) |
| 36 | |
| 37 | #define CHRG_STAT_BAT_SAFE_MODE (1 << 3) |
| 38 | #define CHRG_STAT_BAT_VALID (1 << 4) |
| 39 | #define CHRG_STAT_BAT_PRESENT (1 << 5) |
| 40 | #define CHRG_STAT_CHARGING (1 << 6) |
| 41 | #define CHRG_STAT_PMIC_OTP (1 << 7) |
| 42 | |
| 43 | #define VBUS_ISPOUT_CUR_LIM_MASK 0x03 |
| 44 | #define VBUS_ISPOUT_CUR_LIM_BIT_POS 0 |
| 45 | #define VBUS_ISPOUT_CUR_LIM_900MA 0x0 /* 900mA */ |
| 46 | #define VBUS_ISPOUT_CUR_LIM_1500MA 0x1 /* 1500mA */ |
| 47 | #define VBUS_ISPOUT_CUR_LIM_2000MA 0x2 /* 2000mA */ |
| 48 | #define VBUS_ISPOUT_CUR_NO_LIM 0x3 /* 2500mA */ |
| 49 | #define VBUS_ISPOUT_VHOLD_SET_MASK 0x31 |
| 50 | #define VBUS_ISPOUT_VHOLD_SET_BIT_POS 0x3 |
| 51 | #define VBUS_ISPOUT_VHOLD_SET_OFFSET 4000 /* 4000mV */ |
| 52 | #define VBUS_ISPOUT_VHOLD_SET_LSB_RES 100 /* 100mV */ |
| 53 | #define VBUS_ISPOUT_VHOLD_SET_4300MV 0x3 /* 4300mV */ |
| 54 | #define VBUS_ISPOUT_VBUS_PATH_DIS (1 << 7) |
| 55 | |
| 56 | #define CHRG_CCCV_CC_MASK 0xf /* 4 bits */ |
| 57 | #define CHRG_CCCV_CC_BIT_POS 0 |
| 58 | #define CHRG_CCCV_CC_OFFSET 200 /* 200mA */ |
| 59 | #define CHRG_CCCV_CC_LSB_RES 200 /* 200mA */ |
| 60 | #define CHRG_CCCV_ITERM_20P (1 << 4) /* 20% of CC */ |
| 61 | #define CHRG_CCCV_CV_MASK 0x60 /* 2 bits */ |
| 62 | #define CHRG_CCCV_CV_BIT_POS 5 |
| 63 | #define CHRG_CCCV_CV_4100MV 0x0 /* 4.10V */ |
| 64 | #define CHRG_CCCV_CV_4150MV 0x1 /* 4.15V */ |
| 65 | #define CHRG_CCCV_CV_4200MV 0x2 /* 4.20V */ |
| 66 | #define CHRG_CCCV_CV_4350MV 0x3 /* 4.35V */ |
| 67 | #define CHRG_CCCV_CHG_EN (1 << 7) |
| 68 | |
| 69 | #define CNTL2_CC_TIMEOUT_MASK 0x3 /* 2 bits */ |
| 70 | #define CNTL2_CC_TIMEOUT_OFFSET 6 /* 6 Hrs */ |
| 71 | #define CNTL2_CC_TIMEOUT_LSB_RES 2 /* 2 Hrs */ |
| 72 | #define CNTL2_CC_TIMEOUT_12HRS 0x3 /* 12 Hrs */ |
| 73 | #define CNTL2_CHGLED_TYPEB (1 << 4) |
| 74 | #define CNTL2_CHG_OUT_TURNON (1 << 5) |
| 75 | #define CNTL2_PC_TIMEOUT_MASK 0xC0 |
| 76 | #define CNTL2_PC_TIMEOUT_OFFSET 40 /* 40 mins */ |
| 77 | #define CNTL2_PC_TIMEOUT_LSB_RES 10 /* 10 mins */ |
| 78 | #define CNTL2_PC_TIMEOUT_70MINS 0x3 |
| 79 | |
| 80 | #define CHRG_ILIM_TEMP_LOOP_EN (1 << 3) |
| 81 | #define CHRG_VBUS_ILIM_MASK 0xf0 |
| 82 | #define CHRG_VBUS_ILIM_BIT_POS 4 |
| 83 | #define CHRG_VBUS_ILIM_100MA 0x0 /* 100mA */ |
| 84 | #define CHRG_VBUS_ILIM_500MA 0x1 /* 500mA */ |
| 85 | #define CHRG_VBUS_ILIM_900MA 0x2 /* 900mA */ |
| 86 | #define CHRG_VBUS_ILIM_1500MA 0x3 /* 1500mA */ |
| 87 | #define CHRG_VBUS_ILIM_2000MA 0x4 /* 2000mA */ |
| 88 | #define CHRG_VBUS_ILIM_2500MA 0x5 /* 2500mA */ |
| 89 | #define CHRG_VBUS_ILIM_3000MA 0x6 /* 3000mA */ |
| 90 | |
| 91 | #define CHRG_VLTFC_0C 0xA5 /* 0 DegC */ |
| 92 | #define CHRG_VHTFC_45C 0x1F /* 45 DegC */ |
| 93 | |
| 94 | #define BAT_IRQ_CFG_CHRG_DONE (1 << 2) |
| 95 | #define BAT_IRQ_CFG_CHRG_START (1 << 3) |
| 96 | #define BAT_IRQ_CFG_BAT_SAFE_EXIT (1 << 4) |
| 97 | #define BAT_IRQ_CFG_BAT_SAFE_ENTER (1 << 5) |
| 98 | #define BAT_IRQ_CFG_BAT_DISCON (1 << 6) |
| 99 | #define BAT_IRQ_CFG_BAT_CONN (1 << 7) |
| 100 | #define BAT_IRQ_CFG_BAT_MASK 0xFC |
| 101 | |
| 102 | #define TEMP_IRQ_CFG_QCBTU (1 << 4) |
| 103 | #define TEMP_IRQ_CFG_CBTU (1 << 5) |
| 104 | #define TEMP_IRQ_CFG_QCBTO (1 << 6) |
| 105 | #define TEMP_IRQ_CFG_CBTO (1 << 7) |
| 106 | #define TEMP_IRQ_CFG_MASK 0xF0 |
| 107 | |
| 108 | #define FG_CNTL_OCV_ADJ_EN (1 << 3) |
| 109 | |
| 110 | #define CV_4100MV 4100 /* 4100mV */ |
| 111 | #define CV_4150MV 4150 /* 4150mV */ |
| 112 | #define CV_4200MV 4200 /* 4200mV */ |
| 113 | #define CV_4350MV 4350 /* 4350mV */ |
| 114 | |
| 115 | #define CC_200MA 200 /* 200mA */ |
| 116 | #define CC_600MA 600 /* 600mA */ |
| 117 | #define CC_800MA 800 /* 800mA */ |
| 118 | #define CC_1000MA 1000 /* 1000mA */ |
| 119 | #define CC_1600MA 1600 /* 1600mA */ |
| 120 | #define CC_2000MA 2000 /* 2000mA */ |
| 121 | |
| 122 | #define ILIM_100MA 100 /* 100mA */ |
| 123 | #define ILIM_500MA 500 /* 500mA */ |
| 124 | #define ILIM_900MA 900 /* 900mA */ |
| 125 | #define ILIM_1500MA 1500 /* 1500mA */ |
| 126 | #define ILIM_2000MA 2000 /* 2000mA */ |
| 127 | #define ILIM_2500MA 2500 /* 2500mA */ |
| 128 | #define ILIM_3000MA 3000 /* 3000mA */ |
| 129 | |
| 130 | #define AXP288_EXTCON_DEV_NAME "axp288_extcon" |
| 131 | |
Ramakrishna Pallala | 843735b | 2015-05-04 22:16:07 +0530 | [diff] [blame] | 132 | enum { |
| 133 | VBUS_OV_IRQ = 0, |
| 134 | CHARGE_DONE_IRQ, |
| 135 | CHARGE_CHARGING_IRQ, |
| 136 | BAT_SAFE_QUIT_IRQ, |
| 137 | BAT_SAFE_ENTER_IRQ, |
| 138 | QCBTU_IRQ, |
| 139 | CBTU_IRQ, |
| 140 | QCBTO_IRQ, |
| 141 | CBTO_IRQ, |
| 142 | CHRG_INTR_END, |
| 143 | }; |
| 144 | |
| 145 | struct axp288_chrg_info { |
| 146 | struct platform_device *pdev; |
| 147 | struct axp20x_chrg_pdata *pdata; |
| 148 | struct regmap *regmap; |
| 149 | struct regmap_irq_chip_data *regmap_irqc; |
| 150 | int irq[CHRG_INTR_END]; |
| 151 | struct power_supply *psy_usb; |
| 152 | struct mutex lock; |
| 153 | |
| 154 | /* OTG/Host mode */ |
| 155 | struct { |
| 156 | struct work_struct work; |
Chanwoo Choi | b396cff | 2016-03-21 10:36:26 +0900 | [diff] [blame] | 157 | struct extcon_dev *cable; |
Ramakrishna Pallala | 843735b | 2015-05-04 22:16:07 +0530 | [diff] [blame] | 158 | struct notifier_block id_nb; |
| 159 | bool id_short; |
| 160 | } otg; |
| 161 | |
| 162 | /* SDP/CDP/DCP USB charging cable notifications */ |
| 163 | struct { |
| 164 | struct extcon_dev *edev; |
| 165 | bool connected; |
| 166 | enum power_supply_type chg_type; |
| 167 | struct notifier_block nb; |
| 168 | struct work_struct work; |
| 169 | } cable; |
| 170 | |
| 171 | int health; |
| 172 | int inlmt; |
| 173 | int cc; |
| 174 | int cv; |
| 175 | int max_cc; |
| 176 | int max_cv; |
| 177 | bool online; |
| 178 | bool present; |
| 179 | bool enable_charger; |
| 180 | bool is_charger_enabled; |
| 181 | }; |
| 182 | |
| 183 | static inline int axp288_charger_set_cc(struct axp288_chrg_info *info, int cc) |
| 184 | { |
| 185 | u8 reg_val; |
| 186 | int ret; |
| 187 | |
| 188 | if (cc < CHRG_CCCV_CC_OFFSET) |
| 189 | cc = CHRG_CCCV_CC_OFFSET; |
| 190 | else if (cc > info->max_cc) |
| 191 | cc = info->max_cc; |
| 192 | |
| 193 | reg_val = (cc - CHRG_CCCV_CC_OFFSET) / CHRG_CCCV_CC_LSB_RES; |
| 194 | cc = (reg_val * CHRG_CCCV_CC_LSB_RES) + CHRG_CCCV_CC_OFFSET; |
| 195 | reg_val = reg_val << CHRG_CCCV_CC_BIT_POS; |
| 196 | |
| 197 | ret = regmap_update_bits(info->regmap, |
| 198 | AXP20X_CHRG_CTRL1, |
| 199 | CHRG_CCCV_CC_MASK, reg_val); |
| 200 | if (ret >= 0) |
| 201 | info->cc = cc; |
| 202 | |
| 203 | return ret; |
| 204 | } |
| 205 | |
| 206 | static inline int axp288_charger_set_cv(struct axp288_chrg_info *info, int cv) |
| 207 | { |
| 208 | u8 reg_val; |
| 209 | int ret; |
| 210 | |
| 211 | if (cv <= CV_4100MV) { |
| 212 | reg_val = CHRG_CCCV_CV_4100MV; |
| 213 | cv = CV_4100MV; |
| 214 | } else if (cv <= CV_4150MV) { |
| 215 | reg_val = CHRG_CCCV_CV_4150MV; |
| 216 | cv = CV_4150MV; |
| 217 | } else if (cv <= CV_4200MV) { |
| 218 | reg_val = CHRG_CCCV_CV_4200MV; |
| 219 | cv = CV_4200MV; |
| 220 | } else { |
| 221 | reg_val = CHRG_CCCV_CV_4350MV; |
| 222 | cv = CV_4350MV; |
| 223 | } |
| 224 | |
| 225 | reg_val = reg_val << CHRG_CCCV_CV_BIT_POS; |
| 226 | |
| 227 | ret = regmap_update_bits(info->regmap, |
| 228 | AXP20X_CHRG_CTRL1, |
| 229 | CHRG_CCCV_CV_MASK, reg_val); |
| 230 | |
| 231 | if (ret >= 0) |
| 232 | info->cv = cv; |
| 233 | |
| 234 | return ret; |
| 235 | } |
| 236 | |
| 237 | static inline int axp288_charger_set_vbus_inlmt(struct axp288_chrg_info *info, |
| 238 | int inlmt) |
| 239 | { |
| 240 | int ret; |
| 241 | unsigned int val; |
| 242 | u8 reg_val; |
| 243 | |
| 244 | /* Read in limit register */ |
| 245 | ret = regmap_read(info->regmap, AXP20X_CHRG_BAK_CTRL, &val); |
| 246 | if (ret < 0) |
| 247 | goto set_inlmt_fail; |
| 248 | |
| 249 | if (inlmt <= ILIM_100MA) { |
| 250 | reg_val = CHRG_VBUS_ILIM_100MA; |
| 251 | inlmt = ILIM_100MA; |
| 252 | } else if (inlmt <= ILIM_500MA) { |
| 253 | reg_val = CHRG_VBUS_ILIM_500MA; |
| 254 | inlmt = ILIM_500MA; |
| 255 | } else if (inlmt <= ILIM_900MA) { |
| 256 | reg_val = CHRG_VBUS_ILIM_900MA; |
| 257 | inlmt = ILIM_900MA; |
| 258 | } else if (inlmt <= ILIM_1500MA) { |
| 259 | reg_val = CHRG_VBUS_ILIM_1500MA; |
| 260 | inlmt = ILIM_1500MA; |
| 261 | } else if (inlmt <= ILIM_2000MA) { |
| 262 | reg_val = CHRG_VBUS_ILIM_2000MA; |
| 263 | inlmt = ILIM_2000MA; |
| 264 | } else if (inlmt <= ILIM_2500MA) { |
| 265 | reg_val = CHRG_VBUS_ILIM_2500MA; |
| 266 | inlmt = ILIM_2500MA; |
| 267 | } else { |
| 268 | reg_val = CHRG_VBUS_ILIM_3000MA; |
| 269 | inlmt = ILIM_3000MA; |
| 270 | } |
| 271 | |
| 272 | reg_val = (val & ~CHRG_VBUS_ILIM_MASK) |
| 273 | | (reg_val << CHRG_VBUS_ILIM_BIT_POS); |
| 274 | ret = regmap_write(info->regmap, AXP20X_CHRG_BAK_CTRL, reg_val); |
| 275 | if (ret >= 0) |
| 276 | info->inlmt = inlmt; |
| 277 | else |
| 278 | dev_err(&info->pdev->dev, "charger BAK control %d\n", ret); |
| 279 | |
| 280 | |
| 281 | set_inlmt_fail: |
| 282 | return ret; |
| 283 | } |
| 284 | |
| 285 | static int axp288_charger_vbus_path_select(struct axp288_chrg_info *info, |
| 286 | bool enable) |
| 287 | { |
| 288 | int ret; |
| 289 | |
| 290 | if (enable) |
| 291 | ret = regmap_update_bits(info->regmap, AXP20X_VBUS_IPSOUT_MGMT, |
| 292 | VBUS_ISPOUT_VBUS_PATH_DIS, 0); |
| 293 | else |
| 294 | ret = regmap_update_bits(info->regmap, AXP20X_VBUS_IPSOUT_MGMT, |
| 295 | VBUS_ISPOUT_VBUS_PATH_DIS, VBUS_ISPOUT_VBUS_PATH_DIS); |
| 296 | |
| 297 | if (ret < 0) |
| 298 | dev_err(&info->pdev->dev, "axp288 vbus path select %d\n", ret); |
| 299 | |
| 300 | |
| 301 | return ret; |
| 302 | } |
| 303 | |
| 304 | static int axp288_charger_enable_charger(struct axp288_chrg_info *info, |
| 305 | bool enable) |
| 306 | { |
| 307 | int ret; |
| 308 | |
| 309 | if (enable) |
| 310 | ret = regmap_update_bits(info->regmap, AXP20X_CHRG_CTRL1, |
| 311 | CHRG_CCCV_CHG_EN, CHRG_CCCV_CHG_EN); |
| 312 | else |
| 313 | ret = regmap_update_bits(info->regmap, AXP20X_CHRG_CTRL1, |
| 314 | CHRG_CCCV_CHG_EN, 0); |
| 315 | if (ret < 0) |
| 316 | dev_err(&info->pdev->dev, "axp288 enable charger %d\n", ret); |
| 317 | else |
| 318 | info->is_charger_enabled = enable; |
| 319 | |
| 320 | return ret; |
| 321 | } |
| 322 | |
| 323 | static int axp288_charger_is_present(struct axp288_chrg_info *info) |
| 324 | { |
| 325 | int ret, present = 0; |
| 326 | unsigned int val; |
| 327 | |
| 328 | ret = regmap_read(info->regmap, AXP20X_PWR_INPUT_STATUS, &val); |
| 329 | if (ret < 0) |
| 330 | return ret; |
| 331 | |
| 332 | if (val & PS_STAT_VBUS_PRESENT) |
| 333 | present = 1; |
| 334 | return present; |
| 335 | } |
| 336 | |
| 337 | static int axp288_charger_is_online(struct axp288_chrg_info *info) |
| 338 | { |
| 339 | int ret, online = 0; |
| 340 | unsigned int val; |
| 341 | |
| 342 | ret = regmap_read(info->regmap, AXP20X_PWR_INPUT_STATUS, &val); |
| 343 | if (ret < 0) |
| 344 | return ret; |
| 345 | |
| 346 | if (val & PS_STAT_VBUS_VALID) |
| 347 | online = 1; |
| 348 | return online; |
| 349 | } |
| 350 | |
| 351 | static int axp288_get_charger_health(struct axp288_chrg_info *info) |
| 352 | { |
| 353 | int ret, pwr_stat, chrg_stat; |
| 354 | int health = POWER_SUPPLY_HEALTH_UNKNOWN; |
| 355 | unsigned int val; |
| 356 | |
| 357 | ret = regmap_read(info->regmap, AXP20X_PWR_INPUT_STATUS, &val); |
| 358 | if ((ret < 0) || !(val & PS_STAT_VBUS_PRESENT)) |
| 359 | goto health_read_fail; |
| 360 | else |
| 361 | pwr_stat = val; |
| 362 | |
| 363 | ret = regmap_read(info->regmap, AXP20X_PWR_OP_MODE, &val); |
| 364 | if (ret < 0) |
| 365 | goto health_read_fail; |
| 366 | else |
| 367 | chrg_stat = val; |
| 368 | |
| 369 | if (!(pwr_stat & PS_STAT_VBUS_VALID)) |
| 370 | health = POWER_SUPPLY_HEALTH_DEAD; |
| 371 | else if (chrg_stat & CHRG_STAT_PMIC_OTP) |
| 372 | health = POWER_SUPPLY_HEALTH_OVERHEAT; |
| 373 | else if (chrg_stat & CHRG_STAT_BAT_SAFE_MODE) |
| 374 | health = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE; |
| 375 | else |
| 376 | health = POWER_SUPPLY_HEALTH_GOOD; |
| 377 | |
| 378 | health_read_fail: |
| 379 | return health; |
| 380 | } |
| 381 | |
| 382 | static int axp288_charger_usb_set_property(struct power_supply *psy, |
| 383 | enum power_supply_property psp, |
| 384 | const union power_supply_propval *val) |
| 385 | { |
| 386 | struct axp288_chrg_info *info = power_supply_get_drvdata(psy); |
| 387 | int ret = 0; |
| 388 | int scaled_val; |
| 389 | |
| 390 | mutex_lock(&info->lock); |
| 391 | |
| 392 | switch (psp) { |
| 393 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: |
| 394 | scaled_val = min(val->intval, info->max_cc); |
| 395 | scaled_val = DIV_ROUND_CLOSEST(scaled_val, 1000); |
| 396 | ret = axp288_charger_set_cc(info, scaled_val); |
| 397 | if (ret < 0) |
| 398 | dev_warn(&info->pdev->dev, "set charge current failed\n"); |
| 399 | break; |
| 400 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: |
| 401 | scaled_val = min(val->intval, info->max_cv); |
| 402 | scaled_val = DIV_ROUND_CLOSEST(scaled_val, 1000); |
| 403 | ret = axp288_charger_set_cv(info, scaled_val); |
| 404 | if (ret < 0) |
| 405 | dev_warn(&info->pdev->dev, "set charge voltage failed\n"); |
| 406 | break; |
| 407 | default: |
| 408 | ret = -EINVAL; |
| 409 | } |
| 410 | |
| 411 | mutex_unlock(&info->lock); |
| 412 | return ret; |
| 413 | } |
| 414 | |
| 415 | static int axp288_charger_usb_get_property(struct power_supply *psy, |
| 416 | enum power_supply_property psp, |
| 417 | union power_supply_propval *val) |
| 418 | { |
| 419 | struct axp288_chrg_info *info = power_supply_get_drvdata(psy); |
| 420 | int ret = 0; |
| 421 | |
| 422 | mutex_lock(&info->lock); |
| 423 | |
| 424 | switch (psp) { |
| 425 | case POWER_SUPPLY_PROP_PRESENT: |
| 426 | /* Check for OTG case first */ |
| 427 | if (info->otg.id_short) { |
| 428 | val->intval = 0; |
| 429 | break; |
| 430 | } |
| 431 | ret = axp288_charger_is_present(info); |
| 432 | if (ret < 0) |
| 433 | goto psy_get_prop_fail; |
| 434 | info->present = ret; |
| 435 | val->intval = info->present; |
| 436 | break; |
| 437 | case POWER_SUPPLY_PROP_ONLINE: |
| 438 | /* Check for OTG case first */ |
| 439 | if (info->otg.id_short) { |
| 440 | val->intval = 0; |
| 441 | break; |
| 442 | } |
| 443 | ret = axp288_charger_is_online(info); |
| 444 | if (ret < 0) |
| 445 | goto psy_get_prop_fail; |
| 446 | info->online = ret; |
| 447 | val->intval = info->online; |
| 448 | break; |
| 449 | case POWER_SUPPLY_PROP_HEALTH: |
| 450 | val->intval = axp288_get_charger_health(info); |
| 451 | break; |
| 452 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: |
| 453 | val->intval = info->cc * 1000; |
| 454 | break; |
| 455 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: |
| 456 | val->intval = info->max_cc * 1000; |
| 457 | break; |
| 458 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: |
| 459 | val->intval = info->cv * 1000; |
| 460 | break; |
| 461 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: |
| 462 | val->intval = info->max_cv * 1000; |
| 463 | break; |
| 464 | case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: |
| 465 | val->intval = info->inlmt * 1000; |
| 466 | break; |
| 467 | default: |
| 468 | ret = -EINVAL; |
| 469 | goto psy_get_prop_fail; |
| 470 | } |
| 471 | |
| 472 | psy_get_prop_fail: |
| 473 | mutex_unlock(&info->lock); |
| 474 | return ret; |
| 475 | } |
| 476 | |
| 477 | static int axp288_charger_property_is_writeable(struct power_supply *psy, |
| 478 | enum power_supply_property psp) |
| 479 | { |
| 480 | int ret; |
| 481 | |
| 482 | switch (psp) { |
| 483 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: |
| 484 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: |
| 485 | ret = 1; |
| 486 | break; |
| 487 | default: |
| 488 | ret = 0; |
| 489 | } |
| 490 | |
| 491 | return ret; |
| 492 | } |
| 493 | |
| 494 | static enum power_supply_property axp288_usb_props[] = { |
| 495 | POWER_SUPPLY_PROP_PRESENT, |
| 496 | POWER_SUPPLY_PROP_ONLINE, |
| 497 | POWER_SUPPLY_PROP_TYPE, |
| 498 | POWER_SUPPLY_PROP_HEALTH, |
| 499 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, |
| 500 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, |
| 501 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, |
| 502 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, |
| 503 | POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, |
| 504 | }; |
| 505 | |
| 506 | static const struct power_supply_desc axp288_charger_desc = { |
| 507 | .name = "axp288_charger", |
| 508 | .type = POWER_SUPPLY_TYPE_USB, |
| 509 | .properties = axp288_usb_props, |
| 510 | .num_properties = ARRAY_SIZE(axp288_usb_props), |
| 511 | .get_property = axp288_charger_usb_get_property, |
| 512 | .set_property = axp288_charger_usb_set_property, |
| 513 | .property_is_writeable = axp288_charger_property_is_writeable, |
| 514 | }; |
| 515 | |
| 516 | static irqreturn_t axp288_charger_irq_thread_handler(int irq, void *dev) |
| 517 | { |
| 518 | struct axp288_chrg_info *info = dev; |
| 519 | int i; |
| 520 | |
| 521 | for (i = 0; i < CHRG_INTR_END; i++) { |
| 522 | if (info->irq[i] == irq) |
| 523 | break; |
| 524 | } |
| 525 | |
| 526 | if (i >= CHRG_INTR_END) { |
| 527 | dev_warn(&info->pdev->dev, "spurious interrupt!!\n"); |
| 528 | return IRQ_NONE; |
| 529 | } |
| 530 | |
| 531 | switch (i) { |
| 532 | case VBUS_OV_IRQ: |
| 533 | dev_dbg(&info->pdev->dev, "VBUS Over Voltage INTR\n"); |
| 534 | break; |
| 535 | case CHARGE_DONE_IRQ: |
| 536 | dev_dbg(&info->pdev->dev, "Charging Done INTR\n"); |
| 537 | break; |
| 538 | case CHARGE_CHARGING_IRQ: |
| 539 | dev_dbg(&info->pdev->dev, "Start Charging IRQ\n"); |
| 540 | break; |
| 541 | case BAT_SAFE_QUIT_IRQ: |
| 542 | dev_dbg(&info->pdev->dev, |
| 543 | "Quit Safe Mode(restart timer) Charging IRQ\n"); |
| 544 | break; |
| 545 | case BAT_SAFE_ENTER_IRQ: |
| 546 | dev_dbg(&info->pdev->dev, |
| 547 | "Enter Safe Mode(timer expire) Charging IRQ\n"); |
| 548 | break; |
| 549 | case QCBTU_IRQ: |
| 550 | dev_dbg(&info->pdev->dev, |
| 551 | "Quit Battery Under Temperature(CHRG) INTR\n"); |
| 552 | break; |
| 553 | case CBTU_IRQ: |
| 554 | dev_dbg(&info->pdev->dev, |
| 555 | "Hit Battery Under Temperature(CHRG) INTR\n"); |
| 556 | break; |
| 557 | case QCBTO_IRQ: |
| 558 | dev_dbg(&info->pdev->dev, |
| 559 | "Quit Battery Over Temperature(CHRG) INTR\n"); |
| 560 | break; |
| 561 | case CBTO_IRQ: |
| 562 | dev_dbg(&info->pdev->dev, |
| 563 | "Hit Battery Over Temperature(CHRG) INTR\n"); |
| 564 | break; |
| 565 | default: |
| 566 | dev_warn(&info->pdev->dev, "Spurious Interrupt!!!\n"); |
| 567 | goto out; |
| 568 | } |
| 569 | |
| 570 | power_supply_changed(info->psy_usb); |
| 571 | out: |
| 572 | return IRQ_HANDLED; |
| 573 | } |
| 574 | |
| 575 | static void axp288_charger_extcon_evt_worker(struct work_struct *work) |
| 576 | { |
| 577 | struct axp288_chrg_info *info = |
| 578 | container_of(work, struct axp288_chrg_info, cable.work); |
| 579 | int ret, current_limit; |
| 580 | bool changed = false; |
| 581 | struct extcon_dev *edev = info->cable.edev; |
| 582 | bool old_connected = info->cable.connected; |
| 583 | |
| 584 | /* Determine cable/charger type */ |
Chanwoo Choi | b396cff | 2016-03-21 10:36:26 +0900 | [diff] [blame] | 585 | if (extcon_get_cable_state_(edev, EXTCON_CHG_USB_SDP) > 0) { |
Ramakrishna Pallala | 843735b | 2015-05-04 22:16:07 +0530 | [diff] [blame] | 586 | dev_dbg(&info->pdev->dev, "USB SDP charger is connected"); |
| 587 | info->cable.connected = true; |
| 588 | info->cable.chg_type = POWER_SUPPLY_TYPE_USB; |
Chanwoo Choi | b396cff | 2016-03-21 10:36:26 +0900 | [diff] [blame] | 589 | } else if (extcon_get_cable_state_(edev, EXTCON_CHG_USB_CDP) > 0) { |
Ramakrishna Pallala | 843735b | 2015-05-04 22:16:07 +0530 | [diff] [blame] | 590 | dev_dbg(&info->pdev->dev, "USB CDP charger is connected"); |
| 591 | info->cable.connected = true; |
| 592 | info->cable.chg_type = POWER_SUPPLY_TYPE_USB_CDP; |
Chanwoo Choi | b396cff | 2016-03-21 10:36:26 +0900 | [diff] [blame] | 593 | } else if (extcon_get_cable_state_(edev, EXTCON_CHG_USB_DCP) > 0) { |
Ramakrishna Pallala | 843735b | 2015-05-04 22:16:07 +0530 | [diff] [blame] | 594 | dev_dbg(&info->pdev->dev, "USB DCP charger is connected"); |
| 595 | info->cable.connected = true; |
| 596 | info->cable.chg_type = POWER_SUPPLY_TYPE_USB_DCP; |
| 597 | } else { |
| 598 | if (old_connected) |
| 599 | dev_dbg(&info->pdev->dev, "USB charger disconnected"); |
| 600 | info->cable.connected = false; |
| 601 | info->cable.chg_type = POWER_SUPPLY_TYPE_USB; |
| 602 | } |
| 603 | |
| 604 | /* Cable status changed */ |
| 605 | if (old_connected != info->cable.connected) |
| 606 | changed = true; |
| 607 | |
| 608 | if (!changed) |
| 609 | return; |
| 610 | |
| 611 | mutex_lock(&info->lock); |
| 612 | |
| 613 | if (info->is_charger_enabled && !info->cable.connected) { |
| 614 | info->enable_charger = false; |
| 615 | ret = axp288_charger_enable_charger(info, info->enable_charger); |
| 616 | if (ret < 0) |
| 617 | dev_err(&info->pdev->dev, |
| 618 | "cannot disable charger (%d)", ret); |
| 619 | |
| 620 | } else if (!info->is_charger_enabled && info->cable.connected) { |
| 621 | switch (info->cable.chg_type) { |
| 622 | case POWER_SUPPLY_TYPE_USB: |
| 623 | current_limit = ILIM_500MA; |
| 624 | break; |
| 625 | case POWER_SUPPLY_TYPE_USB_CDP: |
| 626 | current_limit = ILIM_1500MA; |
| 627 | break; |
| 628 | case POWER_SUPPLY_TYPE_USB_DCP: |
| 629 | current_limit = ILIM_2000MA; |
| 630 | break; |
| 631 | default: |
| 632 | /* Unknown */ |
| 633 | current_limit = 0; |
| 634 | break; |
| 635 | } |
| 636 | |
| 637 | /* Set vbus current limit first, then enable charger */ |
| 638 | ret = axp288_charger_set_vbus_inlmt(info, current_limit); |
| 639 | if (ret < 0) { |
| 640 | dev_err(&info->pdev->dev, |
| 641 | "error setting current limit (%d)", ret); |
| 642 | } else { |
| 643 | info->enable_charger = (current_limit > 0); |
| 644 | ret = axp288_charger_enable_charger(info, |
| 645 | info->enable_charger); |
| 646 | if (ret < 0) |
| 647 | dev_err(&info->pdev->dev, |
| 648 | "cannot enable charger (%d)", ret); |
| 649 | } |
| 650 | } |
| 651 | |
| 652 | if (changed) |
| 653 | info->health = axp288_get_charger_health(info); |
| 654 | |
| 655 | mutex_unlock(&info->lock); |
| 656 | |
| 657 | if (changed) |
| 658 | power_supply_changed(info->psy_usb); |
| 659 | } |
| 660 | |
| 661 | static int axp288_charger_handle_cable_evt(struct notifier_block *nb, |
| 662 | unsigned long event, void *param) |
| 663 | { |
| 664 | struct axp288_chrg_info *info = |
| 665 | container_of(nb, struct axp288_chrg_info, cable.nb); |
| 666 | |
| 667 | schedule_work(&info->cable.work); |
| 668 | |
| 669 | return NOTIFY_OK; |
| 670 | } |
| 671 | |
| 672 | static void axp288_charger_otg_evt_worker(struct work_struct *work) |
| 673 | { |
| 674 | struct axp288_chrg_info *info = |
| 675 | container_of(work, struct axp288_chrg_info, otg.work); |
| 676 | int ret; |
| 677 | |
| 678 | /* Disable VBUS path before enabling the 5V boost */ |
| 679 | ret = axp288_charger_vbus_path_select(info, !info->otg.id_short); |
| 680 | if (ret < 0) |
| 681 | dev_warn(&info->pdev->dev, "vbus path disable failed\n"); |
| 682 | } |
| 683 | |
| 684 | static int axp288_charger_handle_otg_evt(struct notifier_block *nb, |
| 685 | unsigned long event, void *param) |
| 686 | { |
| 687 | struct axp288_chrg_info *info = |
| 688 | container_of(nb, struct axp288_chrg_info, otg.id_nb); |
Chanwoo Choi | b396cff | 2016-03-21 10:36:26 +0900 | [diff] [blame] | 689 | struct extcon_dev *edev = info->otg.cable; |
| 690 | int usb_host = extcon_get_cable_state_(edev, EXTCON_USB_HOST); |
Ramakrishna Pallala | 843735b | 2015-05-04 22:16:07 +0530 | [diff] [blame] | 691 | |
| 692 | dev_dbg(&info->pdev->dev, "external connector USB-Host is %s\n", |
| 693 | usb_host ? "attached" : "detached"); |
| 694 | |
| 695 | /* |
| 696 | * Set usb_id_short flag to avoid running charger detection logic |
| 697 | * in case usb host. |
| 698 | */ |
| 699 | info->otg.id_short = usb_host; |
| 700 | schedule_work(&info->otg.work); |
| 701 | |
| 702 | return NOTIFY_OK; |
| 703 | } |
| 704 | |
| 705 | static void charger_init_hw_regs(struct axp288_chrg_info *info) |
| 706 | { |
| 707 | int ret, cc, cv; |
| 708 | unsigned int val; |
| 709 | |
| 710 | /* Program temperature thresholds */ |
| 711 | ret = regmap_write(info->regmap, AXP20X_V_LTF_CHRG, CHRG_VLTFC_0C); |
| 712 | if (ret < 0) |
| 713 | dev_warn(&info->pdev->dev, "register(%x) write error(%d)\n", |
| 714 | AXP20X_V_LTF_CHRG, ret); |
| 715 | |
| 716 | ret = regmap_write(info->regmap, AXP20X_V_HTF_CHRG, CHRG_VHTFC_45C); |
| 717 | if (ret < 0) |
| 718 | dev_warn(&info->pdev->dev, "register(%x) write error(%d)\n", |
| 719 | AXP20X_V_HTF_CHRG, ret); |
| 720 | |
| 721 | /* Do not turn-off charger o/p after charge cycle ends */ |
| 722 | ret = regmap_update_bits(info->regmap, |
| 723 | AXP20X_CHRG_CTRL2, |
| 724 | CNTL2_CHG_OUT_TURNON, 1); |
| 725 | if (ret < 0) |
| 726 | dev_warn(&info->pdev->dev, "register(%x) write error(%d)\n", |
| 727 | AXP20X_CHRG_CTRL2, ret); |
| 728 | |
| 729 | /* Enable interrupts */ |
| 730 | ret = regmap_update_bits(info->regmap, |
| 731 | AXP20X_IRQ2_EN, |
| 732 | BAT_IRQ_CFG_BAT_MASK, 1); |
| 733 | if (ret < 0) |
| 734 | dev_warn(&info->pdev->dev, "register(%x) write error(%d)\n", |
| 735 | AXP20X_IRQ2_EN, ret); |
| 736 | |
| 737 | ret = regmap_update_bits(info->regmap, AXP20X_IRQ3_EN, |
| 738 | TEMP_IRQ_CFG_MASK, 1); |
| 739 | if (ret < 0) |
| 740 | dev_warn(&info->pdev->dev, "register(%x) write error(%d)\n", |
| 741 | AXP20X_IRQ3_EN, ret); |
| 742 | |
| 743 | /* Setup ending condition for charging to be 10% of I(chrg) */ |
| 744 | ret = regmap_update_bits(info->regmap, |
| 745 | AXP20X_CHRG_CTRL1, |
| 746 | CHRG_CCCV_ITERM_20P, 0); |
| 747 | if (ret < 0) |
| 748 | dev_warn(&info->pdev->dev, "register(%x) write error(%d)\n", |
| 749 | AXP20X_CHRG_CTRL1, ret); |
| 750 | |
| 751 | /* Disable OCV-SOC curve calibration */ |
| 752 | ret = regmap_update_bits(info->regmap, |
| 753 | AXP20X_CC_CTRL, |
| 754 | FG_CNTL_OCV_ADJ_EN, 0); |
| 755 | if (ret < 0) |
| 756 | dev_warn(&info->pdev->dev, "register(%x) write error(%d)\n", |
| 757 | AXP20X_CC_CTRL, ret); |
| 758 | |
| 759 | /* Init charging current and voltage */ |
| 760 | info->max_cc = info->pdata->max_cc; |
| 761 | info->max_cv = info->pdata->max_cv; |
| 762 | |
| 763 | /* Read current charge voltage and current limit */ |
| 764 | ret = regmap_read(info->regmap, AXP20X_CHRG_CTRL1, &val); |
| 765 | if (ret < 0) { |
| 766 | /* Assume default if cannot read */ |
| 767 | info->cc = info->pdata->def_cc; |
| 768 | info->cv = info->pdata->def_cv; |
| 769 | } else { |
| 770 | /* Determine charge voltage */ |
| 771 | cv = (val & CHRG_CCCV_CV_MASK) >> CHRG_CCCV_CV_BIT_POS; |
| 772 | switch (cv) { |
| 773 | case CHRG_CCCV_CV_4100MV: |
| 774 | info->cv = CV_4100MV; |
| 775 | break; |
| 776 | case CHRG_CCCV_CV_4150MV: |
| 777 | info->cv = CV_4150MV; |
| 778 | break; |
| 779 | case CHRG_CCCV_CV_4200MV: |
| 780 | info->cv = CV_4200MV; |
| 781 | break; |
| 782 | case CHRG_CCCV_CV_4350MV: |
| 783 | info->cv = CV_4350MV; |
| 784 | break; |
| 785 | default: |
| 786 | info->cv = INT_MAX; |
| 787 | break; |
| 788 | } |
| 789 | |
| 790 | /* Determine charge current limit */ |
| 791 | cc = (ret & CHRG_CCCV_CC_MASK) >> CHRG_CCCV_CC_BIT_POS; |
| 792 | cc = (cc * CHRG_CCCV_CC_LSB_RES) + CHRG_CCCV_CC_OFFSET; |
| 793 | info->cc = cc; |
| 794 | |
| 795 | /* Program default charging voltage and current */ |
| 796 | cc = min(info->pdata->def_cc, info->max_cc); |
| 797 | cv = min(info->pdata->def_cv, info->max_cv); |
| 798 | |
| 799 | ret = axp288_charger_set_cc(info, cc); |
| 800 | if (ret < 0) |
| 801 | dev_warn(&info->pdev->dev, |
| 802 | "error(%d) in setting CC\n", ret); |
| 803 | |
| 804 | ret = axp288_charger_set_cv(info, cv); |
| 805 | if (ret < 0) |
| 806 | dev_warn(&info->pdev->dev, |
| 807 | "error(%d) in setting CV\n", ret); |
| 808 | } |
| 809 | } |
| 810 | |
| 811 | static int axp288_charger_probe(struct platform_device *pdev) |
| 812 | { |
| 813 | int ret, i, pirq; |
| 814 | struct axp288_chrg_info *info; |
| 815 | struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent); |
| 816 | struct power_supply_config charger_cfg = {}; |
| 817 | |
| 818 | info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); |
| 819 | if (!info) |
| 820 | return -ENOMEM; |
| 821 | |
| 822 | info->pdev = pdev; |
| 823 | info->regmap = axp20x->regmap; |
| 824 | info->regmap_irqc = axp20x->regmap_irqc; |
| 825 | info->pdata = pdev->dev.platform_data; |
| 826 | |
| 827 | if (!info->pdata) { |
| 828 | /* Try ACPI provided pdata via device properties */ |
| 829 | if (!device_property_present(&pdev->dev, |
| 830 | "axp288_charger_data\n")) |
| 831 | dev_err(&pdev->dev, "failed to get platform data\n"); |
| 832 | return -ENODEV; |
| 833 | } |
| 834 | |
| 835 | info->cable.edev = extcon_get_extcon_dev(AXP288_EXTCON_DEV_NAME); |
| 836 | if (info->cable.edev == NULL) { |
| 837 | dev_dbg(&pdev->dev, "%s is not ready, probe deferred\n", |
| 838 | AXP288_EXTCON_DEV_NAME); |
| 839 | return -EPROBE_DEFER; |
| 840 | } |
| 841 | |
| 842 | /* Register for extcon notification */ |
| 843 | INIT_WORK(&info->cable.work, axp288_charger_extcon_evt_worker); |
| 844 | info->cable.nb.notifier_call = axp288_charger_handle_cable_evt; |
Chanwoo Choi | b396cff | 2016-03-21 10:36:26 +0900 | [diff] [blame] | 845 | ret = extcon_register_notifier(info->cable.edev, EXTCON_CHG_USB_SDP, |
| 846 | &info->cable.nb); |
Ramakrishna Pallala | 843735b | 2015-05-04 22:16:07 +0530 | [diff] [blame] | 847 | if (ret) { |
| 848 | dev_err(&info->pdev->dev, |
Chanwoo Choi | b396cff | 2016-03-21 10:36:26 +0900 | [diff] [blame] | 849 | "failed to register extcon notifier for SDP %d\n", ret); |
| 850 | return ret; |
| 851 | } |
| 852 | |
| 853 | ret = extcon_register_notifier(info->cable.edev, EXTCON_CHG_USB_CDP, |
| 854 | &info->cable.nb); |
| 855 | if (ret) { |
| 856 | dev_err(&info->pdev->dev, |
| 857 | "failed to register extcon notifier for CDP %d\n", ret); |
| 858 | extcon_unregister_notifier(info->cable.edev, |
| 859 | EXTCON_CHG_USB_SDP, &info->cable.nb); |
| 860 | return ret; |
| 861 | } |
| 862 | |
| 863 | ret = extcon_register_notifier(info->cable.edev, EXTCON_CHG_USB_DCP, |
| 864 | &info->cable.nb); |
| 865 | if (ret) { |
| 866 | dev_err(&info->pdev->dev, |
| 867 | "failed to register extcon notifier for DCP %d\n", ret); |
| 868 | extcon_unregister_notifier(info->cable.edev, |
| 869 | EXTCON_CHG_USB_SDP, &info->cable.nb); |
| 870 | extcon_unregister_notifier(info->cable.edev, |
| 871 | EXTCON_CHG_USB_CDP, &info->cable.nb); |
Ramakrishna Pallala | 843735b | 2015-05-04 22:16:07 +0530 | [diff] [blame] | 872 | return ret; |
| 873 | } |
| 874 | |
| 875 | platform_set_drvdata(pdev, info); |
| 876 | mutex_init(&info->lock); |
| 877 | |
| 878 | /* Register with power supply class */ |
| 879 | charger_cfg.drv_data = info; |
| 880 | info->psy_usb = power_supply_register(&pdev->dev, &axp288_charger_desc, |
| 881 | &charger_cfg); |
| 882 | if (IS_ERR(info->psy_usb)) { |
| 883 | dev_err(&pdev->dev, "failed to register power supply charger\n"); |
| 884 | ret = PTR_ERR(info->psy_usb); |
| 885 | goto psy_reg_failed; |
| 886 | } |
| 887 | |
| 888 | /* Register for OTG notification */ |
| 889 | INIT_WORK(&info->otg.work, axp288_charger_otg_evt_worker); |
| 890 | info->otg.id_nb.notifier_call = axp288_charger_handle_otg_evt; |
Chanwoo Choi | b396cff | 2016-03-21 10:36:26 +0900 | [diff] [blame] | 891 | ret = extcon_register_notifier(info->otg.cable, EXTCON_USB_HOST, |
Ramakrishna Pallala | 843735b | 2015-05-04 22:16:07 +0530 | [diff] [blame] | 892 | &info->otg.id_nb); |
| 893 | if (ret) |
| 894 | dev_warn(&pdev->dev, "failed to register otg notifier\n"); |
| 895 | |
Chanwoo Choi | b396cff | 2016-03-21 10:36:26 +0900 | [diff] [blame] | 896 | if (info->otg.cable) |
| 897 | info->otg.id_short = extcon_get_cable_state_( |
| 898 | info->otg.cable, EXTCON_USB_HOST); |
Ramakrishna Pallala | 843735b | 2015-05-04 22:16:07 +0530 | [diff] [blame] | 899 | |
| 900 | /* Register charger interrupts */ |
| 901 | for (i = 0; i < CHRG_INTR_END; i++) { |
| 902 | pirq = platform_get_irq(info->pdev, i); |
| 903 | info->irq[i] = regmap_irq_get_virq(info->regmap_irqc, pirq); |
| 904 | if (info->irq[i] < 0) { |
| 905 | dev_warn(&info->pdev->dev, |
| 906 | "failed to get virtual interrupt=%d\n", pirq); |
| 907 | ret = info->irq[i]; |
| 908 | goto intr_reg_failed; |
| 909 | } |
| 910 | ret = devm_request_threaded_irq(&info->pdev->dev, info->irq[i], |
| 911 | NULL, axp288_charger_irq_thread_handler, |
| 912 | IRQF_ONESHOT, info->pdev->name, info); |
| 913 | if (ret) { |
| 914 | dev_err(&pdev->dev, "failed to request interrupt=%d\n", |
| 915 | info->irq[i]); |
| 916 | goto intr_reg_failed; |
| 917 | } |
| 918 | } |
| 919 | |
| 920 | charger_init_hw_regs(info); |
| 921 | |
| 922 | return 0; |
| 923 | |
| 924 | intr_reg_failed: |
Chanwoo Choi | b396cff | 2016-03-21 10:36:26 +0900 | [diff] [blame] | 925 | if (info->otg.cable) |
| 926 | extcon_unregister_notifier(info->otg.cable, EXTCON_USB_HOST, |
| 927 | &info->otg.id_nb); |
Ramakrishna Pallala | 843735b | 2015-05-04 22:16:07 +0530 | [diff] [blame] | 928 | power_supply_unregister(info->psy_usb); |
| 929 | psy_reg_failed: |
Chanwoo Choi | b396cff | 2016-03-21 10:36:26 +0900 | [diff] [blame] | 930 | extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_SDP, |
| 931 | &info->cable.nb); |
| 932 | extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_CDP, |
| 933 | &info->cable.nb); |
| 934 | extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_DCP, |
| 935 | &info->cable.nb); |
Ramakrishna Pallala | 843735b | 2015-05-04 22:16:07 +0530 | [diff] [blame] | 936 | return ret; |
| 937 | } |
| 938 | |
| 939 | static int axp288_charger_remove(struct platform_device *pdev) |
| 940 | { |
| 941 | struct axp288_chrg_info *info = dev_get_drvdata(&pdev->dev); |
| 942 | |
Chanwoo Choi | b396cff | 2016-03-21 10:36:26 +0900 | [diff] [blame] | 943 | if (info->otg.cable) |
| 944 | extcon_unregister_notifier(info->otg.cable, EXTCON_USB_HOST, |
| 945 | &info->otg.id_nb); |
Ramakrishna Pallala | 843735b | 2015-05-04 22:16:07 +0530 | [diff] [blame] | 946 | |
Chanwoo Choi | b396cff | 2016-03-21 10:36:26 +0900 | [diff] [blame] | 947 | extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_SDP, |
| 948 | &info->cable.nb); |
| 949 | extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_CDP, |
| 950 | &info->cable.nb); |
| 951 | extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_DCP, |
| 952 | &info->cable.nb); |
Ramakrishna Pallala | 843735b | 2015-05-04 22:16:07 +0530 | [diff] [blame] | 953 | power_supply_unregister(info->psy_usb); |
| 954 | |
| 955 | return 0; |
| 956 | } |
| 957 | |
| 958 | static struct platform_driver axp288_charger_driver = { |
| 959 | .probe = axp288_charger_probe, |
| 960 | .remove = axp288_charger_remove, |
| 961 | .driver = { |
| 962 | .name = "axp288_charger", |
| 963 | }, |
| 964 | }; |
| 965 | |
| 966 | module_platform_driver(axp288_charger_driver); |
| 967 | |
| 968 | MODULE_AUTHOR("Ramakrishna Pallala <ramakrishna.pallala@intel.com>"); |
| 969 | MODULE_DESCRIPTION("X-power AXP288 Charger Driver"); |
| 970 | MODULE_LICENSE("GPL v2"); |