Michel JAOUEN | 01ec8c5 | 2012-04-26 10:00:04 +0200 | [diff] [blame^] | 1 | /* |
| 2 | * Power supply driver for ST Ericsson pm2xxx_charger charger |
| 3 | * |
| 4 | * Copyright 2012 ST Ericsson. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | */ |
| 10 | |
| 11 | #include <linux/init.h> |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/device.h> |
| 14 | #include <linux/interrupt.h> |
| 15 | #include <linux/delay.h> |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/platform_device.h> |
| 18 | #include <linux/power_supply.h> |
| 19 | #include <linux/completion.h> |
| 20 | #include <linux/regulator/consumer.h> |
| 21 | #include <linux/err.h> |
| 22 | #include <linux/i2c.h> |
| 23 | #include <linux/workqueue.h> |
| 24 | #include <linux/kobject.h> |
| 25 | #include <linux/mfd/abx500.h> |
| 26 | #include <linux/mfd/abx500/ab8500.h> |
| 27 | #include <linux/mfd/abx500/ab8500-bm.h> |
| 28 | #include <linux/mfd/abx500/ab8500-gpadc.h> |
| 29 | #include <linux/mfd/abx500/ux500_chargalg.h> |
| 30 | #include <linux/pm2301_charger.h> |
| 31 | |
| 32 | #define MAIN_WDOG_ENA 0x01 |
| 33 | #define MAIN_WDOG_KICK 0x02 |
| 34 | #define MAIN_WDOG_DIS 0x00 |
| 35 | #define CHARG_WD_KICK 0x01 |
| 36 | #define MAIN_CH_ENA 0x01 |
| 37 | #define MAIN_CH_NO_OVERSHOOT_ENA_N 0x02 |
| 38 | #define MAIN_CH_DET 0x01 |
| 39 | #define MAIN_CH_CV_ON 0x04 |
| 40 | #define OTP_ENABLE_WD 0x01 |
| 41 | |
| 42 | #define MAIN_CH_INPUT_CURR_SHIFT 4 |
| 43 | |
| 44 | #define LED_INDICATOR_PWM_ENA 0x01 |
| 45 | #define LED_INDICATOR_PWM_DIS 0x00 |
| 46 | #define LED_IND_CUR_5MA 0x04 |
| 47 | #define LED_INDICATOR_PWM_DUTY_252_256 0xBF |
| 48 | |
| 49 | /* HW failure constants */ |
| 50 | #define MAIN_CH_TH_PROT 0x02 |
| 51 | #define MAIN_CH_NOK 0x01 |
| 52 | |
| 53 | /* Watchdog timeout constant */ |
| 54 | #define WD_TIMER 0x30 /* 4min */ |
| 55 | #define WD_KICK_INTERVAL (60 * HZ) |
| 56 | |
| 57 | /* Constant voltage/current */ |
| 58 | #define PM2XXX_CONST_CURR 0x0 |
| 59 | #define PM2XXX_CONST_VOLT 0x1 |
| 60 | |
| 61 | /* Lowest charger voltage is 3.39V -> 0x4E */ |
| 62 | #define LOW_VOLT_REG 0x4E |
| 63 | |
| 64 | #define PM2XXX_BATT_CTRL_REG1 0x00 |
| 65 | #define PM2XXX_BATT_CTRL_REG2 0x01 |
| 66 | #define PM2XXX_BATT_CTRL_REG3 0x02 |
| 67 | #define PM2XXX_BATT_CTRL_REG4 0x03 |
| 68 | #define PM2XXX_BATT_CTRL_REG5 0x04 |
| 69 | #define PM2XXX_BATT_CTRL_REG6 0x05 |
| 70 | #define PM2XXX_BATT_CTRL_REG7 0x06 |
| 71 | #define PM2XXX_BATT_CTRL_REG8 0x07 |
| 72 | #define PM2XXX_NTC_CTRL_REG1 0x08 |
| 73 | #define PM2XXX_NTC_CTRL_REG2 0x09 |
| 74 | #define PM2XXX_BATT_CTRL_REG9 0x0A |
| 75 | #define PM2XXX_BATT_STAT_REG1 0x0B |
| 76 | #define PM2XXX_INP_VOLT_VPWR2 0x11 |
| 77 | #define PM2XXX_INP_DROP_VPWR2 0x13 |
| 78 | #define PM2XXX_INP_VOLT_VPWR1 0x15 |
| 79 | #define PM2XXX_INP_DROP_VPWR1 0x17 |
| 80 | #define PM2XXX_INP_MODE_VPWR 0x18 |
| 81 | #define PM2XXX_BATT_WD_KICK 0x70 |
| 82 | #define PM2XXX_DEV_VER_STAT 0x0C |
| 83 | #define PM2XXX_THERM_WARN_CTRL_REG 0x20 |
| 84 | #define PM2XXX_BATT_DISC_REG 0x21 |
| 85 | #define PM2XXX_BATT_LOW_LEV_COMP_REG 0x22 |
| 86 | #define PM2XXX_BATT_LOW_LEV_VAL_REG 0x23 |
| 87 | #define PM2XXX_I2C_PAD_CTRL_REG 0x24 |
| 88 | #define PM2XXX_SW_CTRL_REG 0x26 |
| 89 | #define PM2XXX_LED_CTRL_REG 0x28 |
| 90 | |
| 91 | #define PM2XXX_REG_INT1 0x40 |
| 92 | #define PM2XXX_MASK_REG_INT1 0x50 |
| 93 | #define PM2XXX_SRCE_REG_INT1 0x60 |
| 94 | #define PM2XXX_REG_INT2 0x41 |
| 95 | #define PM2XXX_MASK_REG_INT2 0x51 |
| 96 | #define PM2XXX_SRCE_REG_INT2 0x61 |
| 97 | #define PM2XXX_REG_INT3 0x42 |
| 98 | #define PM2XXX_MASK_REG_INT3 0x52 |
| 99 | #define PM2XXX_SRCE_REG_INT3 0x62 |
| 100 | #define PM2XXX_REG_INT4 0x43 |
| 101 | #define PM2XXX_MASK_REG_INT4 0x53 |
| 102 | #define PM2XXX_SRCE_REG_INT4 0x63 |
| 103 | #define PM2XXX_REG_INT5 0x44 |
| 104 | #define PM2XXX_MASK_REG_INT5 0x54 |
| 105 | #define PM2XXX_SRCE_REG_INT5 0x64 |
| 106 | #define PM2XXX_REG_INT6 0x45 |
| 107 | #define PM2XXX_MASK_REG_INT6 0x55 |
| 108 | #define PM2XXX_SRCE_REG_INT6 0x65 |
| 109 | |
| 110 | #define VPWR_OVV 0x0 |
| 111 | #define VSYSTEM_OVV 0x1 |
| 112 | |
| 113 | /* control Reg 1 */ |
| 114 | #define PM2XXX_CH_RESUME_EN 0x1 |
| 115 | #define PM2XXX_CH_RESUME_DIS 0x0 |
| 116 | |
| 117 | /* control Reg 2 */ |
| 118 | #define PM2XXX_CH_AUTO_RESUME_EN 0X2 |
| 119 | #define PM2XXX_CH_AUTO_RESUME_DIS 0X0 |
| 120 | #define PM2XXX_CHARGER_ENA 0x4 |
| 121 | #define PM2XXX_CHARGER_DIS 0x0 |
| 122 | |
| 123 | /* control Reg 3 */ |
| 124 | #define PM2XXX_CH_WD_CC_PHASE_OFF 0x0 |
| 125 | #define PM2XXX_CH_WD_CC_PHASE_5MIN 0x1 |
| 126 | #define PM2XXX_CH_WD_CC_PHASE_10MIN 0x2 |
| 127 | #define PM2XXX_CH_WD_CC_PHASE_30MIN 0x3 |
| 128 | #define PM2XXX_CH_WD_CC_PHASE_60MIN 0x4 |
| 129 | #define PM2XXX_CH_WD_CC_PHASE_120MIN 0x5 |
| 130 | #define PM2XXX_CH_WD_CC_PHASE_240MIN 0x6 |
| 131 | #define PM2XXX_CH_WD_CC_PHASE_360MIN 0x7 |
| 132 | |
| 133 | #define PM2XXX_CH_WD_CV_PHASE_OFF (0x0<<3) |
| 134 | #define PM2XXX_CH_WD_CV_PHASE_5MIN (0x1<<3) |
| 135 | #define PM2XXX_CH_WD_CV_PHASE_10MIN (0x2<<3) |
| 136 | #define PM2XXX_CH_WD_CV_PHASE_30MIN (0x3<<3) |
| 137 | #define PM2XXX_CH_WD_CV_PHASE_60MIN (0x4<<3) |
| 138 | #define PM2XXX_CH_WD_CV_PHASE_120MIN (0x5<<3) |
| 139 | #define PM2XXX_CH_WD_CV_PHASE_240MIN (0x6<<3) |
| 140 | #define PM2XXX_CH_WD_CV_PHASE_360MIN (0x7<<3) |
| 141 | |
| 142 | /* control Reg 4 */ |
| 143 | #define PM2XXX_CH_WD_PRECH_PHASE_OFF 0x0 |
| 144 | #define PM2XXX_CH_WD_PRECH_PHASE_1MIN 0x1 |
| 145 | #define PM2XXX_CH_WD_PRECH_PHASE_5MIN 0x2 |
| 146 | #define PM2XXX_CH_WD_PRECH_PHASE_10MIN 0x3 |
| 147 | #define PM2XXX_CH_WD_PRECH_PHASE_30MIN 0x4 |
| 148 | #define PM2XXX_CH_WD_PRECH_PHASE_60MIN 0x5 |
| 149 | #define PM2XXX_CH_WD_PRECH_PHASE_120MIN 0x6 |
| 150 | #define PM2XXX_CH_WD_PRECH_PHASE_240MIN 0x7 |
| 151 | |
| 152 | /* control Reg 5 */ |
| 153 | #define PM2XXX_CH_WD_AUTO_TIMEOUT_NONE 0x0 |
| 154 | #define PM2XXX_CH_WD_AUTO_TIMEOUT_20MIN 0x1 |
| 155 | |
| 156 | /* control Reg 6 */ |
| 157 | #define PM2XXX_DIR_CH_CC_CURRENT_MASK 0x0F |
| 158 | #define PM2XXX_DIR_CH_CC_CURRENT_200MA 0x0 |
| 159 | #define PM2XXX_DIR_CH_CC_CURRENT_400MA 0x2 |
| 160 | #define PM2XXX_DIR_CH_CC_CURRENT_600MA 0x3 |
| 161 | #define PM2XXX_DIR_CH_CC_CURRENT_800MA 0x4 |
| 162 | #define PM2XXX_DIR_CH_CC_CURRENT_1000MA 0x5 |
| 163 | #define PM2XXX_DIR_CH_CC_CURRENT_1200MA 0x6 |
| 164 | #define PM2XXX_DIR_CH_CC_CURRENT_1400MA 0x7 |
| 165 | #define PM2XXX_DIR_CH_CC_CURRENT_1600MA 0x8 |
| 166 | #define PM2XXX_DIR_CH_CC_CURRENT_1800MA 0x9 |
| 167 | #define PM2XXX_DIR_CH_CC_CURRENT_2000MA 0xA |
| 168 | #define PM2XXX_DIR_CH_CC_CURRENT_2200MA 0xB |
| 169 | #define PM2XXX_DIR_CH_CC_CURRENT_2400MA 0xC |
| 170 | #define PM2XXX_DIR_CH_CC_CURRENT_2600MA 0xD |
| 171 | #define PM2XXX_DIR_CH_CC_CURRENT_2800MA 0xE |
| 172 | #define PM2XXX_DIR_CH_CC_CURRENT_3000MA 0xF |
| 173 | |
| 174 | #define PM2XXX_CH_PRECH_CURRENT_MASK 0x30 |
| 175 | #define PM2XXX_CH_PRECH_CURRENT_25MA (0x0<<4) |
| 176 | #define PM2XXX_CH_PRECH_CURRENT_50MA (0x1<<4) |
| 177 | #define PM2XXX_CH_PRECH_CURRENT_75MA (0x2<<4) |
| 178 | #define PM2XXX_CH_PRECH_CURRENT_100MA (0x3<<4) |
| 179 | |
| 180 | #define PM2XXX_CH_EOC_CURRENT_MASK 0xC0 |
| 181 | #define PM2XXX_CH_EOC_CURRENT_100MA (0x0<<6) |
| 182 | #define PM2XXX_CH_EOC_CURRENT_150MA (0x1<<6) |
| 183 | #define PM2XXX_CH_EOC_CURRENT_300MA (0x2<<6) |
| 184 | #define PM2XXX_CH_EOC_CURRENT_400MA (0x3<<6) |
| 185 | |
| 186 | /* control Reg 7 */ |
| 187 | #define PM2XXX_CH_PRECH_VOL_2_5 0x0 |
| 188 | #define PM2XXX_CH_PRECH_VOL_2_7 0x1 |
| 189 | #define PM2XXX_CH_PRECH_VOL_2_9 0x2 |
| 190 | #define PM2XXX_CH_PRECH_VOL_3_1 0x3 |
| 191 | |
| 192 | #define PM2XXX_CH_VRESUME_VOL_3_2 (0x0<<2) |
| 193 | #define PM2XXX_CH_VRESUME_VOL_3_4 (0x1<<2) |
| 194 | #define PM2XXX_CH_VRESUME_VOL_3_6 (0x2<<2) |
| 195 | #define PM2XXX_CH_VRESUME_VOL_3_8 (0x3<<2) |
| 196 | |
| 197 | /* control Reg 8 */ |
| 198 | #define PM2XXX_CH_VOLT_MASK 0x3F |
| 199 | #define PM2XXX_CH_VOLT_3_5 0x0 |
| 200 | #define PM2XXX_CH_VOLT_3_5225 0x1 |
| 201 | #define PM2XXX_CH_VOLT_3_6 0x4 |
| 202 | #define PM2XXX_CH_VOLT_3_7 0x8 |
| 203 | #define PM2XXX_CH_VOLT_4_0 0x14 |
| 204 | #define PM2XXX_CH_VOLT_4_175 0x1B |
| 205 | #define PM2XXX_CH_VOLT_4_2 0x1C |
| 206 | #define PM2XXX_CH_VOLT_4_275 0x1F |
| 207 | #define PM2XXX_CH_VOLT_4_3 0x20 |
| 208 | |
| 209 | /*NTC control register 1*/ |
| 210 | #define PM2XXX_BTEMP_HIGH_TH_45 0x0 |
| 211 | #define PM2XXX_BTEMP_HIGH_TH_50 0x1 |
| 212 | #define PM2XXX_BTEMP_HIGH_TH_55 0x2 |
| 213 | #define PM2XXX_BTEMP_HIGH_TH_60 0x3 |
| 214 | #define PM2XXX_BTEMP_HIGH_TH_65 0x4 |
| 215 | |
| 216 | #define PM2XXX_BTEMP_LOW_TH_N5 (0x0<<3) |
| 217 | #define PM2XXX_BTEMP_LOW_TH_0 (0x1<<3) |
| 218 | #define PM2XXX_BTEMP_LOW_TH_5 (0x2<<3) |
| 219 | #define PM2XXX_BTEMP_LOW_TH_10 (0x3<<3) |
| 220 | |
| 221 | /*NTC control register 2*/ |
| 222 | #define PM2XXX_NTC_BETA_COEFF_3477 0x0 |
| 223 | #define PM2XXX_NTC_BETA_COEFF_3964 0x1 |
| 224 | |
| 225 | #define PM2XXX_NTC_RES_10K (0x0<<2) |
| 226 | #define PM2XXX_NTC_RES_47K (0x1<<2) |
| 227 | #define PM2XXX_NTC_RES_100K (0x2<<2) |
| 228 | #define PM2XXX_NTC_RES_NO_NTC (0x3<<2) |
| 229 | |
| 230 | /* control Reg 9 */ |
| 231 | #define PM2XXX_CH_CC_MODEDROP_EN 1 |
| 232 | #define PM2XXX_CH_CC_MODEDROP_DIS 0 |
| 233 | |
| 234 | #define PM2XXX_CH_CC_REDUCED_CURRENT_100MA (0x0<<1) |
| 235 | #define PM2XXX_CH_CC_REDUCED_CURRENT_200MA (0x1<<1) |
| 236 | #define PM2XXX_CH_CC_REDUCED_CURRENT_400MA (0x2<<1) |
| 237 | #define PM2XXX_CH_CC_REDUCED_CURRENT_IDENT (0x3<<1) |
| 238 | |
| 239 | #define PM2XXX_CHARCHING_INFO_DIS (0<<3) |
| 240 | #define PM2XXX_CHARCHING_INFO_EN (1<<3) |
| 241 | |
| 242 | #define PM2XXX_CH_150MV_DROP_300MV (0<<4) |
| 243 | #define PM2XXX_CH_150MV_DROP_150MV (1<<4) |
| 244 | |
| 245 | |
| 246 | /* charger status register */ |
| 247 | #define PM2XXX_CHG_STATUS_OFF 0x0 |
| 248 | #define PM2XXX_CHG_STATUS_ON 0x1 |
| 249 | #define PM2XXX_CHG_STATUS_FULL 0x2 |
| 250 | #define PM2XXX_CHG_STATUS_ERR 0x3 |
| 251 | #define PM2XXX_CHG_STATUS_WAIT 0x4 |
| 252 | #define PM2XXX_CHG_STATUS_NOBAT 0x5 |
| 253 | |
| 254 | /* Input charger voltage VPWR2 */ |
| 255 | #define PM2XXX_VPWR2_OVV_6_0 0x0 |
| 256 | #define PM2XXX_VPWR2_OVV_6_3 0x1 |
| 257 | #define PM2XXX_VPWR2_OVV_10 0x2 |
| 258 | #define PM2XXX_VPWR2_OVV_NONE 0x3 |
| 259 | |
| 260 | /* Input charger voltage VPWR1 */ |
| 261 | #define PM2XXX_VPWR1_OVV_6_0 0x0 |
| 262 | #define PM2XXX_VPWR1_OVV_6_3 0x1 |
| 263 | #define PM2XXX_VPWR1_OVV_10 0x2 |
| 264 | #define PM2XXX_VPWR1_OVV_NONE 0x3 |
| 265 | |
| 266 | /* Battery low level comparator control register */ |
| 267 | #define PM2XXX_VBAT_LOW_MONITORING_DIS 0x0 |
| 268 | #define PM2XXX_VBAT_LOW_MONITORING_ENA 0x1 |
| 269 | |
| 270 | /* Battery low level value control register */ |
| 271 | #define PM2XXX_VBAT_LOW_LEVEL_2_3 0x0 |
| 272 | #define PM2XXX_VBAT_LOW_LEVEL_2_4 0x1 |
| 273 | #define PM2XXX_VBAT_LOW_LEVEL_2_5 0x2 |
| 274 | #define PM2XXX_VBAT_LOW_LEVEL_2_6 0x3 |
| 275 | #define PM2XXX_VBAT_LOW_LEVEL_2_7 0x4 |
| 276 | #define PM2XXX_VBAT_LOW_LEVEL_2_8 0x5 |
| 277 | #define PM2XXX_VBAT_LOW_LEVEL_2_9 0x6 |
| 278 | #define PM2XXX_VBAT_LOW_LEVEL_3_0 0x7 |
| 279 | #define PM2XXX_VBAT_LOW_LEVEL_3_1 0x8 |
| 280 | #define PM2XXX_VBAT_LOW_LEVEL_3_2 0x9 |
| 281 | #define PM2XXX_VBAT_LOW_LEVEL_3_3 0xA |
| 282 | #define PM2XXX_VBAT_LOW_LEVEL_3_4 0xB |
| 283 | #define PM2XXX_VBAT_LOW_LEVEL_3_5 0xC |
| 284 | #define PM2XXX_VBAT_LOW_LEVEL_3_6 0xD |
| 285 | #define PM2XXX_VBAT_LOW_LEVEL_3_7 0xE |
| 286 | #define PM2XXX_VBAT_LOW_LEVEL_3_8 0xF |
| 287 | #define PM2XXX_VBAT_LOW_LEVEL_3_9 0x10 |
| 288 | #define PM2XXX_VBAT_LOW_LEVEL_4_0 0x11 |
| 289 | #define PM2XXX_VBAT_LOW_LEVEL_4_1 0x12 |
| 290 | #define PM2XXX_VBAT_LOW_LEVEL_4_2 0x13 |
| 291 | |
| 292 | /* SW CTRL */ |
| 293 | #define PM2XXX_SWCTRL_HW 0x0 |
| 294 | #define PM2XXX_SWCTRL_SW 0x1 |
| 295 | |
| 296 | |
| 297 | /* LED Driver Control */ |
| 298 | #define PM2XXX_LED_CURRENT_MASK 0x0C |
| 299 | #define PM2XXX_LED_CURRENT_2_5MA (0X0<<2) |
| 300 | #define PM2XXX_LED_CURRENT_1MA (0X1<<2) |
| 301 | #define PM2XXX_LED_CURRENT_5MA (0X2<<2) |
| 302 | #define PM2XXX_LED_CURRENT_10MA (0X3<<2) |
| 303 | |
| 304 | #define PM2XXX_LED_SELECT_MASK 0x02 |
| 305 | #define PM2XXX_LED_SELECT_EN (0X0<<1) |
| 306 | #define PM2XXX_LED_SELECT_DIS (0X1<<1) |
| 307 | |
| 308 | #define PM2XXX_ANTI_OVERSHOOT_MASK 0x01 |
| 309 | #define PM2XXX_ANTI_OVERSHOOT_DIS 0X0 |
| 310 | #define PM2XXX_ANTI_OVERSHOOT_EN 0X1 |
| 311 | |
| 312 | #define to_pm2xxx_charger_ac_device_info(x) container_of((x), \ |
| 313 | struct pm2xxx_charger, ac_chg) |
| 314 | |
| 315 | static int pm2xxx_interrupt_registers[] = { |
| 316 | PM2XXX_REG_INT1, |
| 317 | PM2XXX_REG_INT2, |
| 318 | PM2XXX_REG_INT3, |
| 319 | PM2XXX_REG_INT4, |
| 320 | PM2XXX_REG_INT5, |
| 321 | PM2XXX_REG_INT6, |
| 322 | }; |
| 323 | |
| 324 | enum pm2xxx_reg_int1 { |
| 325 | PM2XXX_INT1_ITVBATDISCONNECT = 0x02, |
| 326 | PM2XXX_INT1_ITVBATLOWR = 0x04, |
| 327 | PM2XXX_INT1_ITVBATLOWF = 0x08, |
| 328 | }; |
| 329 | |
| 330 | enum pm2xxx_mask_reg_int1 { |
| 331 | PM2XXX_INT1_M_ITVBATDISCONNECT = 0x02, |
| 332 | PM2XXX_INT1_M_ITVBATLOWR = 0x04, |
| 333 | PM2XXX_INT1_M_ITVBATLOWF = 0x08, |
| 334 | }; |
| 335 | |
| 336 | enum pm2xxx_source_reg_int1 { |
| 337 | PM2XXX_INT1_S_ITVBATDISCONNECT = 0x02, |
| 338 | PM2XXX_INT1_S_ITVBATLOWR = 0x04, |
| 339 | PM2XXX_INT1_S_ITVBATLOWF = 0x08, |
| 340 | }; |
| 341 | |
| 342 | enum pm2xxx_reg_int2 { |
| 343 | PM2XXX_INT2_ITVPWR2PLUG = 0x01, |
| 344 | PM2XXX_INT2_ITVPWR2UNPLUG = 0x02, |
| 345 | PM2XXX_INT2_ITVPWR1PLUG = 0x04, |
| 346 | PM2XXX_INT2_ITVPWR1UNPLUG = 0x08, |
| 347 | }; |
| 348 | |
| 349 | enum pm2xxx_mask_reg_int2 { |
| 350 | PM2XXX_INT2_M_ITVPWR2PLUG = 0x01, |
| 351 | PM2XXX_INT2_M_ITVPWR2UNPLUG = 0x02, |
| 352 | PM2XXX_INT2_M_ITVPWR1PLUG = 0x04, |
| 353 | PM2XXX_INT2_M_ITVPWR1UNPLUG = 0x08, |
| 354 | }; |
| 355 | |
| 356 | enum pm2xxx_source_reg_int2 { |
| 357 | PM2XXX_INT2_S_ITVPWR2PLUG = 0x03, |
| 358 | PM2XXX_INT2_S_ITVPWR1PLUG = 0x0c, |
| 359 | }; |
| 360 | |
| 361 | enum pm2xxx_reg_int3 { |
| 362 | PM2XXX_INT3_ITCHPRECHARGEWD = 0x01, |
| 363 | PM2XXX_INT3_ITCHCCWD = 0x02, |
| 364 | PM2XXX_INT3_ITCHCVWD = 0x04, |
| 365 | PM2XXX_INT3_ITAUTOTIMEOUTWD = 0x08, |
| 366 | }; |
| 367 | |
| 368 | enum pm2xxx_mask_reg_int3 { |
| 369 | PM2XXX_INT3_M_ITCHPRECHARGEWD = 0x01, |
| 370 | PM2XXX_INT3_M_ITCHCCWD = 0x02, |
| 371 | PM2XXX_INT3_M_ITCHCVWD = 0x04, |
| 372 | PM2XXX_INT3_M_ITAUTOTIMEOUTWD = 0x08, |
| 373 | }; |
| 374 | |
| 375 | enum pm2xxx_source_reg_int3 { |
| 376 | PM2XXX_INT3_S_ITCHPRECHARGEWD = 0x01, |
| 377 | PM2XXX_INT3_S_ITCHCCWD = 0x02, |
| 378 | PM2XXX_INT3_S_ITCHCVWD = 0x04, |
| 379 | PM2XXX_INT3_S_ITAUTOTIMEOUTWD = 0x08, |
| 380 | }; |
| 381 | |
| 382 | enum pm2xxx_reg_int4 { |
| 383 | PM2XXX_INT4_ITBATTEMPCOLD = 0x01, |
| 384 | PM2XXX_INT4_ITBATTEMPHOT = 0x02, |
| 385 | PM2XXX_INT4_ITVPWR2OVV = 0x04, |
| 386 | PM2XXX_INT4_ITVPWR1OVV = 0x08, |
| 387 | PM2XXX_INT4_ITCHARGINGON = 0x10, |
| 388 | PM2XXX_INT4_ITVRESUME = 0x20, |
| 389 | PM2XXX_INT4_ITBATTFULL = 0x40, |
| 390 | PM2XXX_INT4_ITCVPHASE = 0x80, |
| 391 | }; |
| 392 | |
| 393 | enum pm2xxx_mask_reg_int4 { |
| 394 | PM2XXX_INT4_M_ITBATTEMPCOLD = 0x01, |
| 395 | PM2XXX_INT4_M_ITBATTEMPHOT = 0x02, |
| 396 | PM2XXX_INT4_M_ITVPWR2OVV = 0x04, |
| 397 | PM2XXX_INT4_M_ITVPWR1OVV = 0x08, |
| 398 | PM2XXX_INT4_M_ITCHARGINGON = 0x10, |
| 399 | PM2XXX_INT4_M_ITVRESUME = 0x20, |
| 400 | PM2XXX_INT4_M_ITBATTFULL = 0x40, |
| 401 | PM2XXX_INT4_M_ITCVPHASE = 0x80, |
| 402 | }; |
| 403 | |
| 404 | enum pm2xxx_source_reg_int4 { |
| 405 | PM2XXX_INT4_S_ITBATTEMPCOLD = 0x01, |
| 406 | PM2XXX_INT4_S_ITBATTEMPHOT = 0x02, |
| 407 | PM2XXX_INT4_S_ITVPWR2OVV = 0x04, |
| 408 | PM2XXX_INT4_S_ITVPWR1OVV = 0x08, |
| 409 | PM2XXX_INT4_S_ITCHARGINGON = 0x10, |
| 410 | PM2XXX_INT4_S_ITVRESUME = 0x20, |
| 411 | PM2XXX_INT4_S_ITBATTFULL = 0x40, |
| 412 | PM2XXX_INT4_S_ITCVPHASE = 0x80, |
| 413 | }; |
| 414 | |
| 415 | enum pm2xxx_reg_int5 { |
| 416 | PM2XXX_INT5_ITTHERMALSHUTDOWNRISE = 0x01, |
| 417 | PM2XXX_INT5_ITTHERMALSHUTDOWNFALL = 0x02, |
| 418 | PM2XXX_INT5_ITTHERMALWARNINGRISE = 0x04, |
| 419 | PM2XXX_INT5_ITTHERMALWARNINGFALL = 0x08, |
| 420 | PM2XXX_INT5_ITVSYSTEMOVV = 0x10, |
| 421 | }; |
| 422 | |
| 423 | enum pm2xxx_mask_reg_int5 { |
| 424 | PM2XXX_INT5_M_ITTHERMALSHUTDOWNRISE = 0x01, |
| 425 | PM2XXX_INT5_M_ITTHERMALSHUTDOWNFALL = 0x02, |
| 426 | PM2XXX_INT5_M_ITTHERMALWARNINGRISE = 0x04, |
| 427 | PM2XXX_INT5_M_ITTHERMALWARNINGFALL = 0x08, |
| 428 | PM2XXX_INT5_M_ITVSYSTEMOVV = 0x10, |
| 429 | }; |
| 430 | |
| 431 | enum pm2xxx_source_reg_int5 { |
| 432 | PM2XXX_INT5_S_ITTHERMALSHUTDOWNRISE = 0x01, |
| 433 | PM2XXX_INT5_S_ITTHERMALSHUTDOWNFALL = 0x02, |
| 434 | PM2XXX_INT5_S_ITTHERMALWARNINGRISE = 0x04, |
| 435 | PM2XXX_INT5_S_ITTHERMALWARNINGFALL = 0x08, |
| 436 | PM2XXX_INT5_S_ITVSYSTEMOVV = 0x10, |
| 437 | }; |
| 438 | |
| 439 | enum pm2xxx_reg_int6 { |
| 440 | PM2XXX_INT6_ITVPWR2DROP = 0x01, |
| 441 | PM2XXX_INT6_ITVPWR1DROP = 0x02, |
| 442 | PM2XXX_INT6_ITVPWR2VALIDRISE = 0x04, |
| 443 | PM2XXX_INT6_ITVPWR2VALIDFALL = 0x08, |
| 444 | PM2XXX_INT6_ITVPWR1VALIDRISE = 0x10, |
| 445 | PM2XXX_INT6_ITVPWR1VALIDFALL = 0x20, |
| 446 | }; |
| 447 | |
| 448 | enum pm2xxx_mask_reg_int6 { |
| 449 | PM2XXX_INT6_M_ITVPWR2DROP = 0x01, |
| 450 | PM2XXX_INT6_M_ITVPWR1DROP = 0x02, |
| 451 | PM2XXX_INT6_M_ITVPWR2VALIDRISE = 0x04, |
| 452 | PM2XXX_INT6_M_ITVPWR2VALIDFALL = 0x08, |
| 453 | PM2XXX_INT6_M_ITVPWR1VALIDRISE = 0x10, |
| 454 | PM2XXX_INT6_M_ITVPWR1VALIDFALL = 0x20, |
| 455 | }; |
| 456 | |
| 457 | enum pm2xxx_source_reg_int6 { |
| 458 | PM2XXX_INT6_S_ITVPWR2DROP = 0x01, |
| 459 | PM2XXX_INT6_S_ITVPWR1DROP = 0x02, |
| 460 | PM2XXX_INT6_S_ITVPWR2VALIDRISE = 0x04, |
| 461 | PM2XXX_INT6_S_ITVPWR2VALIDFALL = 0x08, |
| 462 | PM2XXX_INT6_S_ITVPWR1VALIDRISE = 0x10, |
| 463 | PM2XXX_INT6_S_ITVPWR1VALIDFALL = 0x20, |
| 464 | }; |
| 465 | |
| 466 | static enum power_supply_property pm2xxx_charger_ac_props[] = { |
| 467 | POWER_SUPPLY_PROP_HEALTH, |
| 468 | POWER_SUPPLY_PROP_PRESENT, |
| 469 | POWER_SUPPLY_PROP_ONLINE, |
| 470 | POWER_SUPPLY_PROP_VOLTAGE_NOW, |
| 471 | POWER_SUPPLY_PROP_VOLTAGE_AVG, |
| 472 | POWER_SUPPLY_PROP_CURRENT_NOW, |
| 473 | }; |
| 474 | |
| 475 | static int pm2xxx_charger_voltage_map[] = { |
| 476 | 3500, |
| 477 | 3525, |
| 478 | 3550, |
| 479 | 3575, |
| 480 | 3600, |
| 481 | 3625, |
| 482 | 3650, |
| 483 | 3675, |
| 484 | 3700, |
| 485 | 3725, |
| 486 | 3750, |
| 487 | 3775, |
| 488 | 3800, |
| 489 | 3825, |
| 490 | 3850, |
| 491 | 3875, |
| 492 | 3900, |
| 493 | 3925, |
| 494 | 3950, |
| 495 | 3975, |
| 496 | 4000, |
| 497 | 4025, |
| 498 | 4050, |
| 499 | 4075, |
| 500 | 4100, |
| 501 | 4125, |
| 502 | 4150, |
| 503 | 4175, |
| 504 | 4200, |
| 505 | 4225, |
| 506 | 4250, |
| 507 | 4275, |
| 508 | 4300, |
| 509 | }; |
| 510 | |
| 511 | static int pm2xxx_charger_current_map[] = { |
| 512 | 200, |
| 513 | 200, |
| 514 | 400, |
| 515 | 600, |
| 516 | 800, |
| 517 | 1000, |
| 518 | 1200, |
| 519 | 1400, |
| 520 | 1600, |
| 521 | 1800, |
| 522 | 2000, |
| 523 | 2200, |
| 524 | 2400, |
| 525 | 2600, |
| 526 | 2800, |
| 527 | 3000, |
| 528 | }; |
| 529 | |
| 530 | struct pm2xxx_irq { |
| 531 | char *name; |
| 532 | irqreturn_t (*isr)(int irq, void *data); |
| 533 | }; |
| 534 | |
| 535 | struct pm2xxx_charger_info { |
| 536 | int charger_connected; |
| 537 | int charger_online; |
| 538 | int charger_voltage; |
| 539 | int cv_active; |
| 540 | bool wd_expired; |
| 541 | }; |
| 542 | |
| 543 | struct pm2xxx_charger_event_flags { |
| 544 | bool mainextchnotok; |
| 545 | bool main_thermal_prot; |
| 546 | bool ovv; |
| 547 | bool chgwdexp; |
| 548 | }; |
| 549 | |
| 550 | struct pm2xxx_config { |
| 551 | struct i2c_client *pm2xxx_i2c; |
| 552 | struct i2c_device_id *pm2xxx_id; |
| 553 | }; |
| 554 | |
| 555 | struct pm2xxx_charger { |
| 556 | struct device *dev; |
| 557 | u8 chip_id; |
| 558 | bool vddadc_en_ac; |
| 559 | struct pm2xxx_config config; |
| 560 | bool ac_conn; |
| 561 | unsigned int gpio_irq; |
| 562 | int vbat; |
| 563 | int old_vbat; |
| 564 | int failure_case; |
| 565 | int failure_input_ovv; |
| 566 | u8 pm2_int[6]; |
| 567 | struct ab8500_gpadc *gpadc; |
| 568 | struct regulator *regu; |
| 569 | struct pm2xxx_bm_data *bat; |
| 570 | struct mutex lock; |
| 571 | struct ab8500 *parent; |
| 572 | struct pm2xxx_charger_info ac; |
| 573 | struct pm2xxx_charger_platform_data *pdata; |
| 574 | struct workqueue_struct *charger_wq; |
| 575 | struct delayed_work check_vbat_work; |
| 576 | struct work_struct ac_work; |
| 577 | struct work_struct check_main_thermal_prot_work; |
| 578 | struct ux500_charger ac_chg; |
| 579 | struct pm2xxx_charger_event_flags flags; |
| 580 | }; |
| 581 | |
| 582 | static const struct i2c_device_id pm2xxx_ident[] = { |
| 583 | { "pm2301", 0 }, |
| 584 | { } |
| 585 | }; |
| 586 | |
| 587 | static int pm2xxx_reg_read(struct pm2xxx_charger *pm2, int reg, u8 *val) |
| 588 | { |
| 589 | int ret; |
| 590 | |
| 591 | ret = i2c_smbus_read_i2c_block_data(pm2->config.pm2xxx_i2c, reg, |
| 592 | 1, val); |
| 593 | if (ret < 0) |
| 594 | dev_err(pm2->dev, "Error reading register at 0x%x\n", reg); |
| 595 | |
| 596 | return ret; |
| 597 | } |
| 598 | |
| 599 | static int pm2xxx_reg_write(struct pm2xxx_charger *pm2, int reg, u8 val) |
| 600 | { |
| 601 | int ret; |
| 602 | |
| 603 | ret = i2c_smbus_write_i2c_block_data(pm2->config.pm2xxx_i2c, reg, |
| 604 | 1, &val); |
| 605 | if (ret < 0) |
| 606 | dev_err(pm2->dev, "Error writing register at 0x%x\n", reg); |
| 607 | |
| 608 | return ret; |
| 609 | } |
| 610 | |
| 611 | static int pm2xxx_charging_enable_mngt(struct pm2xxx_charger *pm2) |
| 612 | { |
| 613 | int ret; |
| 614 | |
| 615 | /* Enable charging */ |
| 616 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG2, |
| 617 | (PM2XXX_CH_AUTO_RESUME_EN | PM2XXX_CHARGER_ENA)); |
| 618 | |
| 619 | return ret; |
| 620 | } |
| 621 | |
| 622 | static int pm2xxx_charging_disable_mngt(struct pm2xxx_charger *pm2) |
| 623 | { |
| 624 | int ret; |
| 625 | |
| 626 | /* Disable charging */ |
| 627 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG2, |
| 628 | (PM2XXX_CH_AUTO_RESUME_DIS | PM2XXX_CHARGER_DIS)); |
| 629 | |
| 630 | return ret; |
| 631 | } |
| 632 | |
| 633 | static int pm2xxx_charger_batt_therm_mngt(struct pm2xxx_charger *pm2, int val) |
| 634 | { |
| 635 | queue_work(pm2->charger_wq, &pm2->check_main_thermal_prot_work); |
| 636 | |
| 637 | return 0; |
| 638 | } |
| 639 | |
| 640 | |
| 641 | int pm2xxx_charger_die_therm_mngt(struct pm2xxx_charger *pm2, int val) |
| 642 | { |
| 643 | queue_work(pm2->charger_wq, &pm2->check_main_thermal_prot_work); |
| 644 | |
| 645 | return 0; |
| 646 | } |
| 647 | |
| 648 | static int pm2xxx_charger_ovv_mngt(struct pm2xxx_charger *pm2, int val) |
| 649 | { |
| 650 | int ret = 0; |
| 651 | |
| 652 | pm2->failure_input_ovv++; |
| 653 | if (pm2->failure_input_ovv < 4) { |
| 654 | ret = pm2xxx_charging_enable_mngt(pm2); |
| 655 | goto out; |
| 656 | } else { |
| 657 | pm2->failure_input_ovv = 0; |
| 658 | dev_err(pm2->dev, "Overvoltage detected\n"); |
| 659 | pm2->flags.ovv = true; |
| 660 | power_supply_changed(&pm2->ac_chg.psy); |
| 661 | } |
| 662 | |
| 663 | out: |
| 664 | return ret; |
| 665 | } |
| 666 | |
| 667 | static int pm2xxx_charger_wd_exp_mngt(struct pm2xxx_charger *pm2, int val) |
| 668 | { |
| 669 | dev_dbg(pm2->dev , "20 minutes watchdog occured\n"); |
| 670 | |
| 671 | pm2->ac.wd_expired = true; |
| 672 | power_supply_changed(&pm2->ac_chg.psy); |
| 673 | |
| 674 | return 0; |
| 675 | } |
| 676 | |
| 677 | static int pm2xxx_charger_vbat_lsig_mngt(struct pm2xxx_charger *pm2, int val) |
| 678 | { |
| 679 | switch (val) { |
| 680 | case PM2XXX_INT1_ITVBATLOWR: |
| 681 | dev_dbg(pm2->dev, "VBAT grows above VBAT_LOW level\n"); |
| 682 | break; |
| 683 | |
| 684 | case PM2XXX_INT1_ITVBATLOWF: |
| 685 | dev_dbg(pm2->dev, "VBAT drops below VBAT_LOW level\n"); |
| 686 | break; |
| 687 | |
| 688 | default: |
| 689 | dev_err(pm2->dev, "Unknown VBAT level\n"); |
| 690 | } |
| 691 | |
| 692 | return 0; |
| 693 | } |
| 694 | |
| 695 | static int pm2xxx_charger_bat_disc_mngt(struct pm2xxx_charger *pm2, int val) |
| 696 | { |
| 697 | dev_dbg(pm2->dev, "battery disconnected\n"); |
| 698 | |
| 699 | return (pm2xxx_charging_disable_mngt(pm2)); |
| 700 | } |
| 701 | |
| 702 | static int pm2xxx_charger_detection(struct pm2xxx_charger *pm2, u8 *val) |
| 703 | { |
| 704 | int ret = 0; |
| 705 | |
| 706 | ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT2, val); |
| 707 | |
| 708 | if (ret < 0) { |
| 709 | dev_err(pm2->dev, "Charger detection failed\n"); |
| 710 | goto out; |
| 711 | } |
| 712 | |
| 713 | *val &= (PM2XXX_INT2_S_ITVPWR1PLUG | PM2XXX_INT2_S_ITVPWR2PLUG); |
| 714 | out: |
| 715 | return ret; |
| 716 | } |
| 717 | |
| 718 | static int pm2xxx_charger_itv_pwr_plug_mngt(struct pm2xxx_charger *pm2, int val) |
| 719 | { |
| 720 | |
| 721 | int ret; |
| 722 | u8 read_val; |
| 723 | |
| 724 | /* |
| 725 | * Since we can't be sure that the events are received |
| 726 | * synchronously, we have the check if the main charger is |
| 727 | * connected by reading the interrupt source register. |
| 728 | */ |
| 729 | ret = pm2xxx_charger_detection(pm2, &read_val); |
| 730 | |
| 731 | if ((ret == 0) && read_val) { |
| 732 | pm2->ac.charger_connected = 1; |
| 733 | pm2->ac_conn = true; |
| 734 | queue_work(pm2->charger_wq, &pm2->ac_work); |
| 735 | } |
| 736 | |
| 737 | |
| 738 | return ret; |
| 739 | } |
| 740 | |
| 741 | static int pm2xxx_charger_itv_pwr_unplug_mngt(struct pm2xxx_charger *pm2, |
| 742 | int val) |
| 743 | { |
| 744 | pm2->ac.charger_connected = 0; |
| 745 | queue_work(pm2->charger_wq, &pm2->ac_work); |
| 746 | |
| 747 | return 0; |
| 748 | } |
| 749 | |
| 750 | static int pm2_int_reg0(struct pm2xxx_charger *pm2) |
| 751 | { |
| 752 | int ret = 0; |
| 753 | |
| 754 | if (pm2->pm2_int[0] & |
| 755 | (PM2XXX_INT1_ITVBATLOWR | PM2XXX_INT1_ITVBATLOWF)) { |
| 756 | ret = pm2xxx_charger_vbat_lsig_mngt(pm2, pm2->pm2_int[0] & |
| 757 | (PM2XXX_INT1_ITVBATLOWR | PM2XXX_INT1_ITVBATLOWF)); |
| 758 | } |
| 759 | |
| 760 | if (pm2->pm2_int[0] & PM2XXX_INT1_ITVBATDISCONNECT) { |
| 761 | ret = pm2xxx_charger_bat_disc_mngt(pm2, |
| 762 | PM2XXX_INT1_ITVBATDISCONNECT); |
| 763 | } |
| 764 | |
| 765 | return ret; |
| 766 | } |
| 767 | |
| 768 | static int pm2_int_reg1(struct pm2xxx_charger *pm2) |
| 769 | { |
| 770 | int ret = 0; |
| 771 | |
| 772 | if (pm2->pm2_int[1] & |
| 773 | (PM2XXX_INT2_ITVPWR1PLUG | PM2XXX_INT2_ITVPWR2PLUG)) { |
| 774 | dev_dbg(pm2->dev , "Main charger plugged\n"); |
| 775 | ret = pm2xxx_charger_itv_pwr_plug_mngt(pm2, pm2->pm2_int[1] & |
| 776 | (PM2XXX_INT2_ITVPWR1PLUG | PM2XXX_INT2_ITVPWR2PLUG)); |
| 777 | } |
| 778 | |
| 779 | if (pm2->pm2_int[1] & |
| 780 | (PM2XXX_INT2_ITVPWR1UNPLUG | PM2XXX_INT2_ITVPWR2UNPLUG)) { |
| 781 | dev_dbg(pm2->dev , "Main charger unplugged\n"); |
| 782 | ret = pm2xxx_charger_itv_pwr_unplug_mngt(pm2, pm2->pm2_int[1] & |
| 783 | (PM2XXX_INT2_ITVPWR1UNPLUG | |
| 784 | PM2XXX_INT2_ITVPWR2UNPLUG)); |
| 785 | } |
| 786 | |
| 787 | return ret; |
| 788 | } |
| 789 | |
| 790 | static int pm2_int_reg2(struct pm2xxx_charger *pm2) |
| 791 | { |
| 792 | int ret = 0; |
| 793 | |
| 794 | if (pm2->pm2_int[2] & PM2XXX_INT3_ITAUTOTIMEOUTWD) |
| 795 | ret = pm2xxx_charger_wd_exp_mngt(pm2, pm2->pm2_int[2]); |
| 796 | |
| 797 | if (pm2->pm2_int[2] & (PM2XXX_INT3_ITCHPRECHARGEWD | |
| 798 | PM2XXX_INT3_ITCHCCWD | PM2XXX_INT3_ITCHCVWD)) { |
| 799 | dev_dbg(pm2->dev, |
| 800 | "Watchdog occured for precharge, CC and CV charge\n"); |
| 801 | } |
| 802 | |
| 803 | return ret; |
| 804 | } |
| 805 | |
| 806 | static int pm2_int_reg3(struct pm2xxx_charger *pm2) |
| 807 | { |
| 808 | int ret = 0; |
| 809 | |
| 810 | if (pm2->pm2_int[3] & (PM2XXX_INT4_ITCHARGINGON)) { |
| 811 | dev_dbg(pm2->dev , |
| 812 | "chargind operation has started\n"); |
| 813 | } |
| 814 | |
| 815 | if (pm2->pm2_int[3] & (PM2XXX_INT4_ITVRESUME)) { |
| 816 | dev_dbg(pm2->dev, |
| 817 | "battery discharged down to VResume threshold\n"); |
| 818 | } |
| 819 | |
| 820 | if (pm2->pm2_int[3] & (PM2XXX_INT4_ITBATTFULL)) { |
| 821 | dev_dbg(pm2->dev , "battery fully detected\n"); |
| 822 | } |
| 823 | |
| 824 | if (pm2->pm2_int[3] & (PM2XXX_INT4_ITCVPHASE)) { |
| 825 | dev_dbg(pm2->dev, "CV phase enter with 0.5C charging\n"); |
| 826 | } |
| 827 | |
| 828 | if (pm2->pm2_int[3] & |
| 829 | (PM2XXX_INT4_ITVPWR2OVV | PM2XXX_INT4_ITVPWR1OVV)) { |
| 830 | pm2->failure_case = VPWR_OVV; |
| 831 | ret = pm2xxx_charger_ovv_mngt(pm2, pm2->pm2_int[3] & |
| 832 | (PM2XXX_INT4_ITVPWR2OVV | PM2XXX_INT4_ITVPWR1OVV)); |
| 833 | dev_dbg(pm2->dev, "VPWR/VSYSTEM overvoltage detected\n"); |
| 834 | } |
| 835 | |
| 836 | if (pm2->pm2_int[3] & (PM2XXX_INT4_S_ITBATTEMPCOLD | |
| 837 | PM2XXX_INT4_S_ITBATTEMPHOT)) { |
| 838 | ret = pm2xxx_charger_batt_therm_mngt(pm2, |
| 839 | pm2->pm2_int[3] & (PM2XXX_INT4_S_ITBATTEMPCOLD | |
| 840 | PM2XXX_INT4_S_ITBATTEMPHOT)); |
| 841 | dev_dbg(pm2->dev, "BTEMP is too Low/High\n"); |
| 842 | } |
| 843 | |
| 844 | return ret; |
| 845 | } |
| 846 | |
| 847 | static int pm2_int_reg4(struct pm2xxx_charger *pm2) |
| 848 | { |
| 849 | int ret = 0; |
| 850 | |
| 851 | if (pm2->pm2_int[4] & PM2XXX_INT5_ITVSYSTEMOVV) { |
| 852 | pm2->failure_case = VSYSTEM_OVV; |
| 853 | ret = pm2xxx_charger_ovv_mngt(pm2, pm2->pm2_int[4] & |
| 854 | PM2XXX_INT5_ITVSYSTEMOVV); |
| 855 | dev_dbg(pm2->dev, "VSYSTEM overvoltage detected\n"); |
| 856 | } |
| 857 | |
| 858 | if (pm2->pm2_int[4] & (PM2XXX_INT5_ITTHERMALWARNINGFALL | |
| 859 | PM2XXX_INT5_ITTHERMALWARNINGRISE | |
| 860 | PM2XXX_INT5_ITTHERMALSHUTDOWNFALL | |
| 861 | PM2XXX_INT5_ITTHERMALSHUTDOWNRISE)) { |
| 862 | dev_dbg(pm2->dev, "BTEMP die temperature is too Low/High\n"); |
| 863 | ret = pm2xxx_charger_die_therm_mngt(pm2, pm2->pm2_int[4] & |
| 864 | (PM2XXX_INT5_ITTHERMALWARNINGFALL | |
| 865 | PM2XXX_INT5_ITTHERMALWARNINGRISE | |
| 866 | PM2XXX_INT5_ITTHERMALSHUTDOWNFALL | |
| 867 | PM2XXX_INT5_ITTHERMALSHUTDOWNRISE)); |
| 868 | } |
| 869 | |
| 870 | return ret; |
| 871 | } |
| 872 | |
| 873 | static int pm2_int_reg5(struct pm2xxx_charger *pm2) |
| 874 | { |
| 875 | |
| 876 | if (pm2->pm2_int[5] |
| 877 | & (PM2XXX_INT6_ITVPWR2DROP | PM2XXX_INT6_ITVPWR1DROP)) { |
| 878 | dev_dbg(pm2->dev, "VMPWR drop to VBAT level\n"); |
| 879 | } |
| 880 | |
| 881 | if (pm2->pm2_int[5] & (PM2XXX_INT6_ITVPWR2VALIDRISE | |
| 882 | PM2XXX_INT6_ITVPWR1VALIDRISE | |
| 883 | PM2XXX_INT6_ITVPWR2VALIDFALL | |
| 884 | PM2XXX_INT6_ITVPWR1VALIDFALL)) { |
| 885 | dev_dbg(pm2->dev, "Falling/Rising edge on WPWR1/2\n"); |
| 886 | } |
| 887 | |
| 888 | return 0; |
| 889 | } |
| 890 | |
| 891 | static irqreturn_t pm2xxx_irq_int(int irq, void *data) |
| 892 | { |
| 893 | struct pm2xxx_charger *pm2 = data; |
| 894 | int ret, i; |
| 895 | |
| 896 | for (i = 0; i < ARRAY_SIZE(pm2->pm2_int); i++) { |
| 897 | ret = pm2xxx_reg_read(pm2, pm2xxx_interrupt_registers[i], |
| 898 | &(pm2->pm2_int[i])); |
| 899 | } |
| 900 | |
| 901 | pm2_int_reg0(pm2); |
| 902 | pm2_int_reg1(pm2); |
| 903 | pm2_int_reg2(pm2); |
| 904 | pm2_int_reg3(pm2); |
| 905 | pm2_int_reg4(pm2); |
| 906 | pm2_int_reg5(pm2); |
| 907 | |
| 908 | return IRQ_HANDLED; |
| 909 | } |
| 910 | |
| 911 | static int pm2xxx_charger_get_ac_voltage(struct pm2xxx_charger *pm2) |
| 912 | { |
| 913 | int vch = 0; |
| 914 | |
| 915 | if (pm2->ac.charger_connected) { |
| 916 | vch = ab8500_gpadc_convert(pm2->gpadc, MAIN_CHARGER_V); |
| 917 | if (vch < 0) |
| 918 | dev_err(pm2->dev, "%s gpadc conv failed,\n", __func__); |
| 919 | } |
| 920 | |
| 921 | return vch; |
| 922 | } |
| 923 | |
| 924 | static int pm2xxx_charger_get_ac_cv(struct pm2xxx_charger *pm2) |
| 925 | { |
| 926 | int ret = 0; |
| 927 | u8 val; |
| 928 | |
| 929 | if (pm2->ac.charger_connected && pm2->ac.charger_online) { |
| 930 | |
| 931 | ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT4, &val); |
| 932 | if (ret < 0) { |
| 933 | dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__); |
| 934 | goto out; |
| 935 | } |
| 936 | |
| 937 | if (val & PM2XXX_INT4_S_ITCVPHASE) |
| 938 | ret = PM2XXX_CONST_VOLT; |
| 939 | else |
| 940 | ret = PM2XXX_CONST_CURR; |
| 941 | } |
| 942 | out: |
| 943 | return ret; |
| 944 | } |
| 945 | |
| 946 | static int pm2xxx_charger_get_ac_current(struct pm2xxx_charger *pm2) |
| 947 | { |
| 948 | int ich = 0; |
| 949 | |
| 950 | if (pm2->ac.charger_online) { |
| 951 | ich = ab8500_gpadc_convert(pm2->gpadc, MAIN_CHARGER_C); |
| 952 | if (ich < 0) |
| 953 | dev_err(pm2->dev, "%s gpadc conv failed\n", __func__); |
| 954 | } |
| 955 | |
| 956 | return ich; |
| 957 | } |
| 958 | |
| 959 | static int pm2xxx_current_to_regval(int curr) |
| 960 | { |
| 961 | int i; |
| 962 | |
| 963 | if (curr < pm2xxx_charger_current_map[0]) |
| 964 | return 0; |
| 965 | |
| 966 | for (i = 1; i < ARRAY_SIZE(pm2xxx_charger_current_map); i++) { |
| 967 | if (curr < pm2xxx_charger_current_map[i]) |
| 968 | return (i - 1); |
| 969 | } |
| 970 | |
| 971 | i = ARRAY_SIZE(pm2xxx_charger_current_map) - 1; |
| 972 | if (curr == pm2xxx_charger_current_map[i]) |
| 973 | return i; |
| 974 | else |
| 975 | return -EINVAL; |
| 976 | } |
| 977 | |
| 978 | static int pm2xxx_voltage_to_regval(int curr) |
| 979 | { |
| 980 | int i; |
| 981 | |
| 982 | if (curr < pm2xxx_charger_voltage_map[0]) |
| 983 | return 0; |
| 984 | |
| 985 | for (i = 1; i < ARRAY_SIZE(pm2xxx_charger_voltage_map); i++) { |
| 986 | if (curr < pm2xxx_charger_voltage_map[i]) |
| 987 | return i - 1; |
| 988 | } |
| 989 | |
| 990 | i = ARRAY_SIZE(pm2xxx_charger_voltage_map) - 1; |
| 991 | if (curr == pm2xxx_charger_voltage_map[i]) |
| 992 | return i; |
| 993 | else |
| 994 | return -EINVAL; |
| 995 | } |
| 996 | |
| 997 | static int pm2xxx_charger_update_charger_current(struct ux500_charger *charger, |
| 998 | int ich_out) |
| 999 | { |
| 1000 | int ret; |
| 1001 | int curr_index; |
| 1002 | struct pm2xxx_charger *pm2; |
| 1003 | u8 val; |
| 1004 | |
| 1005 | if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS) |
| 1006 | pm2 = to_pm2xxx_charger_ac_device_info(charger); |
| 1007 | else |
| 1008 | return -ENXIO; |
| 1009 | |
| 1010 | curr_index = pm2xxx_current_to_regval(ich_out); |
| 1011 | if (curr_index < 0) { |
| 1012 | dev_err(pm2->dev, |
| 1013 | "Charger current too high: charging not started\n"); |
| 1014 | return -ENXIO; |
| 1015 | } |
| 1016 | |
| 1017 | ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG6, &val); |
| 1018 | if (ret >= 0) { |
| 1019 | val &= ~PM2XXX_DIR_CH_CC_CURRENT_MASK; |
| 1020 | val |= curr_index; |
| 1021 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6, val); |
| 1022 | if (ret < 0) { |
| 1023 | dev_err(pm2->dev, |
| 1024 | "%s write failed\n", __func__); |
| 1025 | } |
| 1026 | } |
| 1027 | else |
| 1028 | dev_err(pm2->dev, "%s read failed\n", __func__); |
| 1029 | |
| 1030 | return ret; |
| 1031 | } |
| 1032 | |
| 1033 | static int pm2xxx_charger_ac_get_property(struct power_supply *psy, |
| 1034 | enum power_supply_property psp, |
| 1035 | union power_supply_propval *val) |
| 1036 | { |
| 1037 | struct pm2xxx_charger *pm2; |
| 1038 | |
| 1039 | pm2 = to_pm2xxx_charger_ac_device_info(psy_to_ux500_charger(psy)); |
| 1040 | |
| 1041 | switch (psp) { |
| 1042 | case POWER_SUPPLY_PROP_HEALTH: |
| 1043 | if (pm2->flags.mainextchnotok) |
| 1044 | val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; |
| 1045 | else if (pm2->ac.wd_expired) |
| 1046 | val->intval = POWER_SUPPLY_HEALTH_DEAD; |
| 1047 | else if (pm2->flags.main_thermal_prot) |
| 1048 | val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; |
| 1049 | else |
| 1050 | val->intval = POWER_SUPPLY_HEALTH_GOOD; |
| 1051 | break; |
| 1052 | case POWER_SUPPLY_PROP_ONLINE: |
| 1053 | val->intval = pm2->ac.charger_online; |
| 1054 | break; |
| 1055 | case POWER_SUPPLY_PROP_PRESENT: |
| 1056 | val->intval = pm2->ac.charger_connected; |
| 1057 | break; |
| 1058 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: |
| 1059 | pm2->ac.charger_voltage = pm2xxx_charger_get_ac_voltage(pm2); |
| 1060 | val->intval = pm2->ac.charger_voltage * 1000; |
| 1061 | break; |
| 1062 | case POWER_SUPPLY_PROP_VOLTAGE_AVG: |
| 1063 | pm2->ac.cv_active = pm2xxx_charger_get_ac_cv(pm2); |
| 1064 | val->intval = pm2->ac.cv_active; |
| 1065 | break; |
| 1066 | case POWER_SUPPLY_PROP_CURRENT_NOW: |
| 1067 | val->intval = pm2xxx_charger_get_ac_current(pm2) * 1000; |
| 1068 | break; |
| 1069 | default: |
| 1070 | return -EINVAL; |
| 1071 | } |
| 1072 | return 0; |
| 1073 | } |
| 1074 | |
| 1075 | static int pm2xxx_charging_init(struct pm2xxx_charger *pm2) |
| 1076 | { |
| 1077 | int ret = 0; |
| 1078 | |
| 1079 | /* enable CC and CV watchdog */ |
| 1080 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG3, |
| 1081 | (PM2XXX_CH_WD_CV_PHASE_60MIN | PM2XXX_CH_WD_CC_PHASE_60MIN)); |
| 1082 | if( ret < 0) |
| 1083 | return ret; |
| 1084 | |
| 1085 | /* enable precharge watchdog */ |
| 1086 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG4, |
| 1087 | PM2XXX_CH_WD_PRECH_PHASE_60MIN); |
| 1088 | |
| 1089 | return ret; |
| 1090 | } |
| 1091 | |
| 1092 | static int pm2xxx_charger_ac_en(struct ux500_charger *charger, |
| 1093 | int enable, int vset, int iset) |
| 1094 | { |
| 1095 | int ret; |
| 1096 | int volt_index; |
| 1097 | int curr_index; |
| 1098 | u8 val; |
| 1099 | |
| 1100 | struct pm2xxx_charger *pm2 = to_pm2xxx_charger_ac_device_info(charger); |
| 1101 | |
| 1102 | if (enable) { |
| 1103 | if (!pm2->ac.charger_connected) { |
| 1104 | dev_dbg(pm2->dev, "AC charger not connected\n"); |
| 1105 | return -ENXIO; |
| 1106 | } |
| 1107 | |
| 1108 | dev_dbg(pm2->dev, "Enable AC: %dmV %dmA\n", vset, iset); |
| 1109 | if (!pm2->vddadc_en_ac) { |
| 1110 | regulator_enable(pm2->regu); |
| 1111 | pm2->vddadc_en_ac = true; |
| 1112 | } |
| 1113 | |
| 1114 | ret = pm2xxx_charging_init(pm2); |
| 1115 | if (ret < 0) { |
| 1116 | dev_err(pm2->dev, "%s charging init failed\n", |
| 1117 | __func__); |
| 1118 | goto error_occured; |
| 1119 | } |
| 1120 | |
| 1121 | volt_index = pm2xxx_voltage_to_regval(vset); |
| 1122 | curr_index = pm2xxx_current_to_regval(iset); |
| 1123 | |
| 1124 | if (volt_index < 0 || curr_index < 0) { |
| 1125 | dev_err(pm2->dev, |
| 1126 | "Charger voltage or current too high, " |
| 1127 | "charging not started\n"); |
| 1128 | return -ENXIO; |
| 1129 | } |
| 1130 | |
| 1131 | ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG8, &val); |
| 1132 | if (ret >= 0) { |
| 1133 | val &= ~PM2XXX_CH_VOLT_MASK; |
| 1134 | val |= volt_index; |
| 1135 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG8, val); |
| 1136 | |
| 1137 | if (ret < 0) { |
| 1138 | dev_err(pm2->dev, |
| 1139 | "%s write failed\n", __func__); |
| 1140 | goto error_occured; |
| 1141 | } |
| 1142 | else |
| 1143 | dev_err(pm2->dev, "%s read failed\n", __func__); |
| 1144 | } |
| 1145 | |
| 1146 | ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG6, &val); |
| 1147 | if (ret >= 0) { |
| 1148 | val &= ~PM2XXX_DIR_CH_CC_CURRENT_MASK; |
| 1149 | val |= curr_index; |
| 1150 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6, val); |
| 1151 | if (ret < 0) { |
| 1152 | dev_err(pm2->dev, |
| 1153 | "%s write failed\n", __func__); |
| 1154 | goto error_occured; |
| 1155 | } |
| 1156 | else |
| 1157 | dev_err(pm2->dev, "%s read failed\n", __func__); |
| 1158 | } |
| 1159 | |
| 1160 | if (!pm2->bat->enable_overshoot) { |
| 1161 | ret = pm2xxx_reg_read(pm2, PM2XXX_LED_CTRL_REG, &val); |
| 1162 | if (ret >= 0) { |
| 1163 | val |= PM2XXX_ANTI_OVERSHOOT_EN; |
| 1164 | ret = pm2xxx_reg_write(pm2, PM2XXX_LED_CTRL_REG, |
| 1165 | val); |
| 1166 | if (ret < 0){ |
| 1167 | dev_err(pm2->dev, "%s write failed\n", |
| 1168 | __func__); |
| 1169 | goto error_occured; |
| 1170 | } |
| 1171 | } |
| 1172 | else |
| 1173 | dev_err(pm2->dev, "%s read failed\n", __func__); |
| 1174 | } |
| 1175 | |
| 1176 | ret = pm2xxx_charging_enable_mngt(pm2); |
| 1177 | if (ret) { |
| 1178 | dev_err(pm2->dev, "%s write failed\n", __func__); |
| 1179 | goto error_occured; |
| 1180 | } |
| 1181 | |
| 1182 | pm2->ac.charger_online = 1; |
| 1183 | } else { |
| 1184 | pm2->ac.charger_online = 0; |
| 1185 | pm2->ac.wd_expired = false; |
| 1186 | |
| 1187 | /* Disable regulator if enabled */ |
| 1188 | if (pm2->vddadc_en_ac) { |
| 1189 | regulator_disable(pm2->regu); |
| 1190 | pm2->vddadc_en_ac = false; |
| 1191 | } |
| 1192 | |
| 1193 | ret = pm2xxx_charging_disable_mngt(pm2); |
| 1194 | if (ret) { |
| 1195 | dev_err(pm2->dev, "%s write failed\n", __func__); |
| 1196 | return ret; |
| 1197 | } |
| 1198 | |
| 1199 | dev_dbg(pm2->dev, "PM2301: " "Disabled AC charging\n"); |
| 1200 | } |
| 1201 | power_supply_changed(&pm2->ac_chg.psy); |
| 1202 | |
| 1203 | error_occured: |
| 1204 | return ret; |
| 1205 | } |
| 1206 | |
| 1207 | static int pm2xxx_charger_watchdog_kick(struct ux500_charger *charger) |
| 1208 | { |
| 1209 | int ret; |
| 1210 | struct pm2xxx_charger *pm2; |
| 1211 | |
| 1212 | if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS) |
| 1213 | pm2 = to_pm2xxx_charger_ac_device_info(charger); |
| 1214 | else |
| 1215 | return -ENXIO; |
| 1216 | |
| 1217 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_WD_KICK, WD_TIMER); |
| 1218 | if (ret) |
| 1219 | dev_err(pm2->dev, "Failed to kick WD!\n"); |
| 1220 | |
| 1221 | return ret; |
| 1222 | } |
| 1223 | |
| 1224 | static void pm2xxx_charger_ac_work(struct work_struct *work) |
| 1225 | { |
| 1226 | struct pm2xxx_charger *pm2 = container_of(work, |
| 1227 | struct pm2xxx_charger, ac_work); |
| 1228 | |
| 1229 | |
| 1230 | power_supply_changed(&pm2->ac_chg.psy); |
| 1231 | sysfs_notify(&pm2->ac_chg.psy.dev->kobj, NULL, "present"); |
| 1232 | }; |
| 1233 | |
| 1234 | static void pm2xxx_charger_check_main_thermal_prot_work( |
| 1235 | struct work_struct *work) |
| 1236 | { |
| 1237 | }; |
| 1238 | |
| 1239 | static struct pm2xxx_irq pm2xxx_charger_irq[] = { |
| 1240 | {"PM2XXX_IRQ_INT", pm2xxx_irq_int}, |
| 1241 | }; |
| 1242 | |
| 1243 | static int pm2xxx_wall_charger_resume(struct i2c_client *i2c_client) |
| 1244 | { |
| 1245 | return 0; |
| 1246 | } |
| 1247 | |
| 1248 | static int pm2xxx_wall_charger_suspend(struct i2c_client *i2c_client, |
| 1249 | pm_message_t state) |
| 1250 | { |
| 1251 | return 0; |
| 1252 | } |
| 1253 | |
| 1254 | static int __devinit pm2xxx_wall_charger_probe(struct i2c_client *i2c_client, |
| 1255 | const struct i2c_device_id *id) |
| 1256 | { |
| 1257 | struct pm2xxx_platform_data *pl_data = i2c_client->dev.platform_data; |
| 1258 | struct pm2xxx_charger *pm2; |
| 1259 | int ret = 0; |
| 1260 | u8 val; |
| 1261 | |
| 1262 | pm2 = kzalloc(sizeof(struct pm2xxx_charger), GFP_KERNEL); |
| 1263 | if (!pm2) { |
| 1264 | dev_err(pm2->dev, "pm2xxx_charger allocation failed\n"); |
| 1265 | return -ENOMEM; |
| 1266 | } |
| 1267 | |
| 1268 | /* get parent data */ |
| 1269 | pm2->dev = &i2c_client->dev; |
| 1270 | pm2->gpadc = ab8500_gpadc_get("ab8500-gpadc.0"); |
| 1271 | |
| 1272 | /* get charger spcific platform data */ |
| 1273 | if (!pl_data->wall_charger) { |
| 1274 | dev_err(pm2->dev, "no charger platform data supplied\n"); |
| 1275 | ret = -EINVAL; |
| 1276 | goto free_device_info; |
| 1277 | } |
| 1278 | |
| 1279 | pm2->pdata = pl_data->wall_charger; |
| 1280 | |
| 1281 | /* get battery specific platform data */ |
| 1282 | if (!pl_data->battery) { |
| 1283 | dev_err(pm2->dev, "no battery platform data supplied\n"); |
| 1284 | ret = -EINVAL; |
| 1285 | goto free_device_info; |
| 1286 | } |
| 1287 | |
| 1288 | pm2->bat = pl_data->battery; |
| 1289 | |
| 1290 | if (!i2c_check_functionality(i2c_client->adapter, |
| 1291 | I2C_FUNC_SMBUS_BYTE_DATA | |
| 1292 | I2C_FUNC_SMBUS_READ_WORD_DATA)) { |
| 1293 | ret = -ENODEV; |
| 1294 | dev_info(pm2->dev, "pm2301 i2c_check_functionality failed\n"); |
| 1295 | goto free_device_info; |
| 1296 | } |
| 1297 | |
| 1298 | pm2->config.pm2xxx_i2c = i2c_client; |
| 1299 | pm2->config.pm2xxx_id = (struct i2c_device_id *) id; |
| 1300 | i2c_set_clientdata(i2c_client, pm2); |
| 1301 | |
| 1302 | /* AC supply */ |
| 1303 | /* power_supply base class */ |
| 1304 | pm2->ac_chg.psy.name = pm2->pdata->label; |
| 1305 | pm2->ac_chg.psy.type = POWER_SUPPLY_TYPE_MAINS; |
| 1306 | pm2->ac_chg.psy.properties = pm2xxx_charger_ac_props; |
| 1307 | pm2->ac_chg.psy.num_properties = ARRAY_SIZE(pm2xxx_charger_ac_props); |
| 1308 | pm2->ac_chg.psy.get_property = pm2xxx_charger_ac_get_property; |
| 1309 | pm2->ac_chg.psy.supplied_to = pm2->pdata->supplied_to; |
| 1310 | pm2->ac_chg.psy.num_supplicants = pm2->pdata->num_supplicants; |
| 1311 | /* pm2xxx_charger sub-class */ |
| 1312 | pm2->ac_chg.ops.enable = &pm2xxx_charger_ac_en; |
| 1313 | pm2->ac_chg.ops.kick_wd = &pm2xxx_charger_watchdog_kick; |
| 1314 | pm2->ac_chg.ops.update_curr = &pm2xxx_charger_update_charger_current; |
| 1315 | pm2->ac_chg.max_out_volt = pm2xxx_charger_voltage_map[ |
| 1316 | ARRAY_SIZE(pm2xxx_charger_voltage_map) - 1]; |
| 1317 | pm2->ac_chg.max_out_curr = pm2xxx_charger_current_map[ |
| 1318 | ARRAY_SIZE(pm2xxx_charger_current_map) - 1]; |
| 1319 | |
| 1320 | /* Create a work queue for the charger */ |
| 1321 | pm2->charger_wq = |
| 1322 | create_singlethread_workqueue("pm2xxx_charger_wq"); |
| 1323 | if (pm2->charger_wq == NULL) { |
| 1324 | dev_err(pm2->dev, "failed to create work queue\n"); |
| 1325 | goto free_device_info; |
| 1326 | } |
| 1327 | |
| 1328 | /* Init work for charger detection */ |
| 1329 | INIT_WORK(&pm2->ac_work, pm2xxx_charger_ac_work); |
| 1330 | |
| 1331 | /* Init work for checking HW status */ |
| 1332 | INIT_WORK(&pm2->check_main_thermal_prot_work, |
| 1333 | pm2xxx_charger_check_main_thermal_prot_work); |
| 1334 | |
| 1335 | /* |
| 1336 | * VDD ADC supply needs to be enabled from this driver when there |
| 1337 | * is a charger connected to avoid erroneous BTEMP_HIGH/LOW |
| 1338 | * interrupts during charging |
| 1339 | */ |
| 1340 | pm2->regu = regulator_get(pm2->dev, "vddadc"); |
| 1341 | if (IS_ERR(pm2->regu)) { |
| 1342 | ret = PTR_ERR(pm2->regu); |
| 1343 | dev_err(pm2->dev, "failed to get vddadc regulator\n"); |
| 1344 | goto free_charger_wq; |
| 1345 | } |
| 1346 | |
| 1347 | /* Register AC charger class */ |
| 1348 | ret = power_supply_register(pm2->dev, &pm2->ac_chg.psy); |
| 1349 | if (ret) { |
| 1350 | dev_err(pm2->dev, "failed to register AC charger\n"); |
| 1351 | goto free_regulator; |
| 1352 | } |
| 1353 | |
| 1354 | /* Register interrupts */ |
| 1355 | ret = request_threaded_irq(pm2->pdata->irq_number, NULL, |
| 1356 | pm2xxx_charger_irq[0].isr, |
| 1357 | pm2->pdata->irq_type, |
| 1358 | pm2xxx_charger_irq[0].name, pm2); |
| 1359 | |
| 1360 | if (ret != 0) { |
| 1361 | dev_err(pm2->dev, "failed to request %s IRQ %d: %d\n", |
| 1362 | pm2xxx_charger_irq[0].name, pm2->pdata->irq_number, ret); |
| 1363 | goto unregister_pm2xxx_charger; |
| 1364 | } |
| 1365 | |
| 1366 | /* |
| 1367 | * I2C Read/Write will fail, if AC adaptor is not connected. |
| 1368 | * fix the charger detection mechanism. |
| 1369 | */ |
| 1370 | ret = pm2xxx_charger_detection(pm2, &val); |
| 1371 | |
| 1372 | if ((ret == 0) && val) { |
| 1373 | pm2->ac.charger_connected = 1; |
| 1374 | pm2->ac_conn = true; |
| 1375 | power_supply_changed(&pm2->ac_chg.psy); |
| 1376 | sysfs_notify(&pm2->ac_chg.psy.dev->kobj, NULL, "present"); |
| 1377 | } |
| 1378 | |
| 1379 | return 0; |
| 1380 | |
| 1381 | unregister_pm2xxx_charger: |
| 1382 | /* unregister power supply */ |
| 1383 | power_supply_unregister(&pm2->ac_chg.psy); |
| 1384 | free_regulator: |
| 1385 | /* disable the regulator */ |
| 1386 | regulator_put(pm2->regu); |
| 1387 | free_charger_wq: |
| 1388 | destroy_workqueue(pm2->charger_wq); |
| 1389 | free_device_info: |
| 1390 | kfree(pm2); |
| 1391 | return ret; |
| 1392 | } |
| 1393 | |
| 1394 | static int __devexit pm2xxx_wall_charger_remove(struct i2c_client *i2c_client) |
| 1395 | { |
| 1396 | struct pm2xxx_charger *pm2 = i2c_get_clientdata(i2c_client); |
| 1397 | |
| 1398 | /* Disable AC charging */ |
| 1399 | pm2xxx_charger_ac_en(&pm2->ac_chg, false, 0, 0); |
| 1400 | |
| 1401 | /* Disable interrupts */ |
| 1402 | free_irq(pm2->pdata->irq_number, pm2); |
| 1403 | |
| 1404 | /* Delete the work queue */ |
| 1405 | destroy_workqueue(pm2->charger_wq); |
| 1406 | |
| 1407 | flush_scheduled_work(); |
| 1408 | |
| 1409 | /* disable the regulator */ |
| 1410 | regulator_put(pm2->regu); |
| 1411 | |
| 1412 | power_supply_unregister(&pm2->ac_chg.psy); |
| 1413 | |
| 1414 | kfree(pm2); |
| 1415 | |
| 1416 | return 0; |
| 1417 | } |
| 1418 | |
| 1419 | static const struct i2c_device_id pm2xxx_id[] = { |
| 1420 | { "pm2301", 0 }, |
| 1421 | { } |
| 1422 | }; |
| 1423 | |
| 1424 | MODULE_DEVICE_TABLE(i2c, pm2xxx_id); |
| 1425 | |
| 1426 | static struct i2c_driver pm2xxx_charger_driver = { |
| 1427 | .probe = pm2xxx_wall_charger_probe, |
| 1428 | .remove = __devexit_p(pm2xxx_wall_charger_remove), |
| 1429 | .suspend = pm2xxx_wall_charger_suspend, |
| 1430 | .resume = pm2xxx_wall_charger_resume, |
| 1431 | .driver = { |
| 1432 | .name = "pm2xxx-wall_charger", |
| 1433 | .owner = THIS_MODULE, |
| 1434 | }, |
| 1435 | .id_table = pm2xxx_id, |
| 1436 | }; |
| 1437 | |
| 1438 | static int __init pm2xxx_charger_init(void) |
| 1439 | { |
| 1440 | return i2c_add_driver(&pm2xxx_charger_driver); |
| 1441 | } |
| 1442 | |
| 1443 | static void __exit pm2xxx_charger_exit(void) |
| 1444 | { |
| 1445 | i2c_del_driver(&pm2xxx_charger_driver); |
| 1446 | } |
| 1447 | |
| 1448 | subsys_initcall_sync(pm2xxx_charger_init); |
| 1449 | module_exit(pm2xxx_charger_exit); |
| 1450 | |
| 1451 | MODULE_LICENSE("GPL v2"); |
| 1452 | MODULE_AUTHOR("Rajkumar kasirajan, Olivier Launay"); |
| 1453 | MODULE_ALIAS("platform:pm2xxx-charger"); |
| 1454 | MODULE_DESCRIPTION("PM2xxx charger management driver"); |
| 1455 | |