diff options
| author | Mike Rapoport <mike@compulab.co.il> | 2008-12-30 16:44:53 -0500 |
|---|---|---|
| committer | Samuel Ortiz <samuel@sortiz.org> | 2009-01-04 06:17:41 -0500 |
| commit | 342d765e011f9cbe4292119a9164f76ccf0b922a (patch) | |
| tree | 1361e4ec21f449935f50aff06583f1ecbce7f039 | |
| parent | 856f6fd119411d5701d5db96e1aae1dd69923887 (diff) | |
power_supply: Add Dialog DA9030 battery charger driver
Driver for battery charger integrated into Dialog Semiconductor DA9030 PMIC
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
| -rw-r--r-- | drivers/power/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/power/Makefile | 1 | ||||
| -rw-r--r-- | drivers/power/da9030_battery.c | 600 |
3 files changed, 608 insertions, 0 deletions
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index 52f86767f72e..668472405a57 100644 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig | |||
| @@ -75,4 +75,11 @@ config BATTERY_BQ27x00 | |||
| 75 | help | 75 | help |
| 76 | Say Y here to enable support for batteries with BQ27200(I2C) chip. | 76 | Say Y here to enable support for batteries with BQ27200(I2C) chip. |
| 77 | 77 | ||
| 78 | config BATTERY_DA9030 | ||
| 79 | tristate "DA9030 battery driver" | ||
| 80 | depends on PMIC_DA903X | ||
| 81 | help | ||
| 82 | Say Y here to enable support for batteries charger integrated into | ||
| 83 | DA9030 PMIC. | ||
| 84 | |||
| 78 | endif # POWER_SUPPLY | 85 | endif # POWER_SUPPLY |
diff --git a/drivers/power/Makefile b/drivers/power/Makefile index e6f68655d9e8..eebb15505a40 100644 --- a/drivers/power/Makefile +++ b/drivers/power/Makefile | |||
| @@ -24,3 +24,4 @@ obj-$(CONFIG_BATTERY_OLPC) += olpc_battery.o | |||
| 24 | obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o | 24 | obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o |
| 25 | obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o | 25 | obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o |
| 26 | obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o | 26 | obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o |
| 27 | obj-$(CONFIG_BATTERY_DA9030) += da9030_battery.o | ||
diff --git a/drivers/power/da9030_battery.c b/drivers/power/da9030_battery.c new file mode 100644 index 000000000000..1662bb0f23a5 --- /dev/null +++ b/drivers/power/da9030_battery.c | |||
| @@ -0,0 +1,600 @@ | |||
| 1 | /* | ||
| 2 | * Battery charger driver for Dialog Semiconductor DA9030 | ||
| 3 | * | ||
| 4 | * Copyright (C) 2008 Compulab, Ltd. | ||
| 5 | * Mike Rapoport <mike@compulab.co.il> | ||
| 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 | |||
| 12 | #include <linux/kernel.h> | ||
| 13 | #include <linux/init.h> | ||
| 14 | #include <linux/types.h> | ||
| 15 | #include <linux/device.h> | ||
| 16 | #include <linux/workqueue.h> | ||
| 17 | #include <linux/module.h> | ||
| 18 | #include <linux/platform_device.h> | ||
| 19 | #include <linux/power_supply.h> | ||
| 20 | #include <linux/mfd/da903x.h> | ||
| 21 | |||
| 22 | #include <linux/debugfs.h> | ||
| 23 | #include <linux/seq_file.h> | ||
| 24 | |||
| 25 | #define DA9030_STATUS_CHDET (1 << 3) | ||
| 26 | |||
| 27 | #define DA9030_FAULT_LOG 0x0a | ||
| 28 | #define DA9030_FAULT_LOG_OVER_TEMP (1 << 7) | ||
| 29 | #define DA9030_FAULT_LOG_VBAT_OVER (1 << 4) | ||
| 30 | |||
| 31 | #define DA9030_CHARGE_CONTROL 0x28 | ||
| 32 | #define DA9030_CHRG_CHARGER_ENABLE (1 << 7) | ||
| 33 | |||
| 34 | #define DA9030_ADC_MAN_CONTROL 0x30 | ||
| 35 | #define DA9030_ADC_TBATREF_ENABLE (1 << 5) | ||
| 36 | #define DA9030_ADC_LDO_INT_ENABLE (1 << 4) | ||
| 37 | |||
| 38 | #define DA9030_ADC_AUTO_CONTROL 0x31 | ||
| 39 | #define DA9030_ADC_TBAT_ENABLE (1 << 5) | ||
| 40 | #define DA9030_ADC_VBAT_IN_TXON (1 << 4) | ||
| 41 | #define DA9030_ADC_VCH_ENABLE (1 << 3) | ||
| 42 | #define DA9030_ADC_ICH_ENABLE (1 << 2) | ||
| 43 | #define DA9030_ADC_VBAT_ENABLE (1 << 1) | ||
| 44 | #define DA9030_ADC_AUTO_SLEEP_ENABLE (1 << 0) | ||
| 45 | |||
| 46 | #define DA9030_VBATMON 0x32 | ||
| 47 | #define DA9030_VBATMONTXON 0x33 | ||
| 48 | #define DA9030_TBATHIGHP 0x34 | ||
| 49 | #define DA9030_TBATHIGHN 0x35 | ||
| 50 | #define DA9030_TBATLOW 0x36 | ||
| 51 | |||
| 52 | #define DA9030_VBAT_RES 0x41 | ||
| 53 | #define DA9030_VBATMIN_RES 0x42 | ||
| 54 | #define DA9030_VBATMINTXON_RES 0x43 | ||
| 55 | #define DA9030_ICHMAX_RES 0x44 | ||
| 56 | #define DA9030_ICHMIN_RES 0x45 | ||
| 57 | #define DA9030_ICHAVERAGE_RES 0x46 | ||
| 58 | #define DA9030_VCHMAX_RES 0x47 | ||
| 59 | #define DA9030_VCHMIN_RES 0x48 | ||
| 60 | #define DA9030_TBAT_RES 0x49 | ||
| 61 | |||
| 62 | struct da9030_adc_res { | ||
| 63 | uint8_t vbat_res; | ||
| 64 | uint8_t vbatmin_res; | ||
| 65 | uint8_t vbatmintxon; | ||
| 66 | uint8_t ichmax_res; | ||
| 67 | uint8_t ichmin_res; | ||
| 68 | uint8_t ichaverage_res; | ||
| 69 | uint8_t vchmax_res; | ||
| 70 | uint8_t vchmin_res; | ||
| 71 | uint8_t tbat_res; | ||
| 72 | uint8_t adc_in4_res; | ||
| 73 | uint8_t adc_in5_res; | ||
| 74 | }; | ||
| 75 | |||
| 76 | struct da9030_battery_thresholds { | ||
| 77 | int tbat_low; | ||
| 78 | int tbat_high; | ||
| 79 | int tbat_restart; | ||
| 80 | |||
| 81 | int vbat_low; | ||
| 82 | int vbat_crit; | ||
| 83 | int vbat_charge_start; | ||
| 84 | int vbat_charge_stop; | ||
| 85 | int vbat_charge_restart; | ||
| 86 | |||
| 87 | int vcharge_min; | ||
| 88 | int vcharge_max; | ||
| 89 | }; | ||
| 90 | |||
| 91 | struct da9030_charger { | ||
| 92 | struct power_supply psy; | ||
| 93 | |||
| 94 | struct device *master; | ||
| 95 | |||
| 96 | struct da9030_adc_res adc; | ||
| 97 | struct delayed_work work; | ||
| 98 | unsigned int interval; | ||
| 99 | |||
| 100 | struct power_supply_info *battery_info; | ||
| 101 | |||
| 102 | struct da9030_battery_thresholds thresholds; | ||
| 103 | |||
| 104 | unsigned int charge_milliamp; | ||
| 105 | unsigned int charge_millivolt; | ||
| 106 | |||
| 107 | /* charger status */ | ||
| 108 | bool chdet; | ||
| 109 | uint8_t fault; | ||
| 110 | int mA; | ||
| 111 | int mV; | ||
| 112 | bool is_on; | ||
| 113 | |||
| 114 | struct notifier_block nb; | ||
| 115 | |||
| 116 | /* platform callbacks for battery low and critical events */ | ||
| 117 | void (*battery_low)(void); | ||
| 118 | void (*battery_critical)(void); | ||
| 119 | |||
| 120 | struct dentry *debug_file; | ||
| 121 | }; | ||
| 122 | |||
| 123 | static inline int da9030_reg_to_mV(int reg) | ||
| 124 | { | ||
| 125 | return ((reg * 2650) >> 8) + 2650; | ||
| 126 | } | ||
| 127 | |||
| 128 | static inline int da9030_millivolt_to_reg(int mV) | ||
| 129 | { | ||
| 130 | return ((mV - 2650) << 8) / 2650; | ||
| 131 | } | ||
| 132 | |||
| 133 | static inline int da9030_reg_to_mA(int reg) | ||
| 134 | { | ||
| 135 | return ((reg * 24000) >> 8) / 15; | ||
| 136 | } | ||
| 137 | |||
| 138 | #ifdef CONFIG_DEBUG_FS | ||
| 139 | static int bat_debug_show(struct seq_file *s, void *data) | ||
| 140 | { | ||
| 141 | struct da9030_charger *charger = s->private; | ||
| 142 | |||
| 143 | seq_printf(s, "charger is %s\n", charger->is_on ? "on" : "off"); | ||
| 144 | if (charger->chdet) { | ||
| 145 | seq_printf(s, "iset = %dmA, vset = %dmV\n", | ||
| 146 | charger->mA, charger->mV); | ||
| 147 | } | ||
| 148 | |||
| 149 | seq_printf(s, "vbat_res = %d (%dmV)\n", | ||
| 150 | charger->adc.vbat_res, | ||
| 151 | da9030_reg_to_mV(charger->adc.vbat_res)); | ||
| 152 | seq_printf(s, "vbatmin_res = %d (%dmV)\n", | ||
| 153 | charger->adc.vbatmin_res, | ||
| 154 | da9030_reg_to_mV(charger->adc.vbatmin_res)); | ||
| 155 | seq_printf(s, "vbatmintxon = %d (%dmV)\n", | ||
| 156 | charger->adc.vbatmintxon, | ||
| 157 | da9030_reg_to_mV(charger->adc.vbatmintxon)); | ||
| 158 | seq_printf(s, "ichmax_res = %d (%dmA)\n", | ||
| 159 | charger->adc.ichmax_res, | ||
| 160 | da9030_reg_to_mV(charger->adc.ichmax_res)); | ||
| 161 | seq_printf(s, "ichmin_res = %d (%dmA)\n", | ||
| 162 | charger->adc.ichmin_res, | ||
| 163 | da9030_reg_to_mA(charger->adc.ichmin_res)); | ||
| 164 | seq_printf(s, "ichaverage_res = %d (%dmA)\n", | ||
| 165 | charger->adc.ichaverage_res, | ||
| 166 | da9030_reg_to_mA(charger->adc.ichaverage_res)); | ||
| 167 | seq_printf(s, "vchmax_res = %d (%dmV)\n", | ||
| 168 | charger->adc.vchmax_res, | ||
| 169 | da9030_reg_to_mA(charger->adc.vchmax_res)); | ||
| 170 | seq_printf(s, "vchmin_res = %d (%dmV)\n", | ||
| 171 | charger->adc.vchmin_res, | ||
| 172 | da9030_reg_to_mV(charger->adc.vchmin_res)); | ||
| 173 | |||
| 174 | return 0; | ||
| 175 | } | ||
| 176 | |||
| 177 | static int debug_open(struct inode *inode, struct file *file) | ||
| 178 | { | ||
| 179 | return single_open(file, bat_debug_show, inode->i_private); | ||
| 180 | } | ||
| 181 | |||
| 182 | static const struct file_operations bat_debug_fops = { | ||
| 183 | .open = debug_open, | ||
| 184 | .read = seq_read, | ||
| 185 | .llseek = seq_lseek, | ||
| 186 | .release = single_release, | ||
| 187 | }; | ||
| 188 | |||
| 189 | static struct dentry *da9030_bat_create_debugfs(struct da9030_charger *charger) | ||
| 190 | { | ||
| 191 | charger->debug_file = debugfs_create_file("charger", 0666, 0, charger, | ||
| 192 | &bat_debug_fops); | ||
| 193 | return charger->debug_file; | ||
| 194 | } | ||
| 195 | |||
| 196 | static void da9030_bat_remove_debugfs(struct da9030_charger *charger) | ||
| 197 | { | ||
| 198 | debugfs_remove(charger->debug_file); | ||
| 199 | } | ||
| 200 | #else | ||
| 201 | static inline struct dentry *da9030_bat_create_debugfs(struct da9030_charger *charger) | ||
| 202 | { | ||
| 203 | return NULL; | ||
| 204 | } | ||
| 205 | static inline void da9030_bat_remove_debugfs(struct da9030_charger *charger) | ||
| 206 | { | ||
| 207 | } | ||
| 208 | #endif | ||
| 209 | |||
| 210 | static inline void da9030_read_adc(struct da9030_charger *charger, | ||
| 211 | struct da9030_adc_res *adc) | ||
| 212 | { | ||
| 213 | da903x_reads(charger->master, DA9030_VBAT_RES, | ||
| 214 | sizeof(*adc), (uint8_t *)adc); | ||
| 215 | } | ||
| 216 | |||
| 217 | static void da9030_charger_update_state(struct da9030_charger *charger) | ||
| 218 | { | ||
| 219 | uint8_t val; | ||
| 220 | |||
| 221 | da903x_read(charger->master, DA9030_CHARGE_CONTROL, &val); | ||
| 222 | charger->is_on = (val & DA9030_CHRG_CHARGER_ENABLE) ? 1 : 0; | ||
| 223 | charger->mA = ((val >> 3) & 0xf) * 100; | ||
| 224 | charger->mV = (val & 0x7) * 50 + 4000; | ||
| 225 | |||
| 226 | da9030_read_adc(charger, &charger->adc); | ||
| 227 | da903x_read(charger->master, DA9030_FAULT_LOG, &charger->fault); | ||
| 228 | charger->chdet = da903x_query_status(charger->master, | ||
| 229 | DA9030_STATUS_CHDET); | ||
| 230 | } | ||
| 231 | |||
| 232 | static void da9030_set_charge(struct da9030_charger *charger, int on) | ||
| 233 | { | ||
| 234 | uint8_t val; | ||
| 235 | |||
| 236 | if (on) { | ||
| 237 | val = DA9030_CHRG_CHARGER_ENABLE; | ||
| 238 | val |= (charger->charge_milliamp / 100) << 3; | ||
| 239 | val |= (charger->charge_millivolt - 4000) / 50; | ||
| 240 | charger->is_on = 1; | ||
| 241 | } else { | ||
| 242 | val = 0; | ||
| 243 | charger->is_on = 0; | ||
| 244 | } | ||
| 245 | |||
| 246 | da903x_write(charger->master, DA9030_CHARGE_CONTROL, val); | ||
| 247 | } | ||
| 248 | |||
| 249 | static void da9030_charger_check_state(struct da9030_charger *charger) | ||
| 250 | { | ||
| 251 | da9030_charger_update_state(charger); | ||
| 252 | |||
| 253 | /* we wake or boot with external power on */ | ||
| 254 | if (!charger->is_on) { | ||
| 255 | if ((charger->chdet) && | ||
| 256 | (charger->adc.vbat_res < | ||
| 257 | charger->thresholds.vbat_charge_start)) { | ||
| 258 | da9030_set_charge(charger, 1); | ||
| 259 | } | ||
| 260 | } else { | ||
| 261 | if (charger->adc.vbat_res >= | ||
| 262 | charger->thresholds.vbat_charge_stop) { | ||
| 263 | da9030_set_charge(charger, 0); | ||
| 264 | da903x_write(charger->master, DA9030_VBATMON, | ||
| 265 | charger->thresholds.vbat_charge_restart); | ||
| 266 | } else if (charger->adc.vbat_res > | ||
| 267 | charger->thresholds.vbat_low) { | ||
| 268 | /* we are charging and passed LOW_THRESH, | ||
| 269 | so upate DA9030 VBAT threshold | ||
| 270 | */ | ||
| 271 | da903x_write(charger->master, DA9030_VBATMON, | ||
| 272 | charger->thresholds.vbat_low); | ||
| 273 | } | ||
| 274 | if (charger->adc.vchmax_res > charger->thresholds.vcharge_max || | ||
| 275 | charger->adc.vchmin_res < charger->thresholds.vcharge_min || | ||
| 276 | /* Tempreture readings are negative */ | ||
| 277 | charger->adc.tbat_res < charger->thresholds.tbat_high || | ||
| 278 | charger->adc.tbat_res > charger->thresholds.tbat_low) { | ||
| 279 | /* disable charger */ | ||
| 280 | da9030_set_charge(charger, 0); | ||
| 281 | } | ||
| 282 | } | ||
| 283 | } | ||
| 284 | |||
| 285 | static void da9030_charging_monitor(struct work_struct *work) | ||
| 286 | { | ||
| 287 | struct da9030_charger *charger; | ||
| 288 | |||
| 289 | charger = container_of(work, struct da9030_charger, work.work); | ||
| 290 | |||
| 291 | da9030_charger_check_state(charger); | ||
| 292 | |||
| 293 | /* reschedule for the next time */ | ||
| 294 | schedule_delayed_work(&charger->work, charger->interval); | ||
| 295 | } | ||
| 296 | |||
| 297 | static enum power_supply_property da9030_battery_props[] = { | ||
| 298 | POWER_SUPPLY_PROP_MODEL_NAME, | ||
| 299 | POWER_SUPPLY_PROP_STATUS, | ||
| 300 | POWER_SUPPLY_PROP_HEALTH, | ||
| 301 | POWER_SUPPLY_PROP_TECHNOLOGY, | ||
| 302 | POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, | ||
| 303 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | ||
| 304 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | ||
| 305 | POWER_SUPPLY_PROP_CURRENT_AVG, | ||
| 306 | }; | ||
| 307 | |||
| 308 | static void da9030_battery_check_status(struct da9030_charger *charger, | ||
| 309 | union power_supply_propval *val) | ||
| 310 | { | ||
| 311 | if (charger->chdet) { | ||
| 312 | if (charger->is_on) | ||
| 313 | val->intval = POWER_SUPPLY_STATUS_CHARGING; | ||
| 314 | else | ||
| 315 | val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; | ||
| 316 | } else { | ||
| 317 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; | ||
| 318 | } | ||
| 319 | } | ||
| 320 | |||
| 321 | static void da9030_battery_check_health(struct da9030_charger *charger, | ||
| 322 | union power_supply_propval *val) | ||
| 323 | { | ||
| 324 | if (charger->fault & DA9030_FAULT_LOG_OVER_TEMP) | ||
| 325 | val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; | ||
| 326 | else if (charger->fault & DA9030_FAULT_LOG_VBAT_OVER) | ||
| 327 | val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; | ||
| 328 | else | ||
| 329 | val->intval = POWER_SUPPLY_HEALTH_GOOD; | ||
| 330 | } | ||
| 331 | |||
| 332 | static int da9030_battery_get_property(struct power_supply *psy, | ||
| 333 | enum power_supply_property psp, | ||
| 334 | union power_supply_propval *val) | ||
| 335 | { | ||
| 336 | struct da9030_charger *charger; | ||
| 337 | charger = container_of(psy, struct da9030_charger, psy); | ||
| 338 | |||
| 339 | switch (psp) { | ||
| 340 | case POWER_SUPPLY_PROP_STATUS: | ||
| 341 | da9030_battery_check_status(charger, val); | ||
| 342 | break; | ||
| 343 | case POWER_SUPPLY_PROP_HEALTH: | ||
| 344 | da9030_battery_check_health(charger, val); | ||
| 345 | break; | ||
| 346 | case POWER_SUPPLY_PROP_TECHNOLOGY: | ||
| 347 | val->intval = charger->battery_info->technology; | ||
| 348 | break; | ||
| 349 | case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: | ||
| 350 | val->intval = charger->battery_info->voltage_max_design; | ||
| 351 | break; | ||
| 352 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: | ||
| 353 | val->intval = charger->battery_info->voltage_min_design; | ||
| 354 | break; | ||
| 355 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | ||
| 356 | val->intval = da9030_reg_to_mV(charger->adc.vbat_res) * 1000; | ||
| 357 | break; | ||
| 358 | case POWER_SUPPLY_PROP_CURRENT_AVG: | ||
| 359 | val->intval = | ||
| 360 | da9030_reg_to_mA(charger->adc.ichaverage_res) * 1000; | ||
| 361 | break; | ||
| 362 | case POWER_SUPPLY_PROP_MODEL_NAME: | ||
| 363 | val->strval = charger->battery_info->name; | ||
| 364 | break; | ||
| 365 | default: | ||
| 366 | break; | ||
| 367 | } | ||
| 368 | |||
| 369 | return 0; | ||
| 370 | } | ||
| 371 | |||
| 372 | static void da9030_battery_vbat_event(struct da9030_charger *charger) | ||
| 373 | { | ||
| 374 | da9030_read_adc(charger, &charger->adc); | ||
| 375 | |||
| 376 | if (charger->is_on) | ||
| 377 | return; | ||
| 378 | |||
| 379 | if (charger->adc.vbat_res < charger->thresholds.vbat_low) { | ||
| 380 | /* set VBAT threshold for critical */ | ||
| 381 | da903x_write(charger->master, DA9030_VBATMON, | ||
| 382 | charger->thresholds.vbat_crit); | ||
| 383 | if (charger->battery_low) | ||
| 384 | charger->battery_low(); | ||
| 385 | } else if (charger->adc.vbat_res < | ||
| 386 | charger->thresholds.vbat_crit) { | ||
| 387 | /* notify the system of battery critical */ | ||
| 388 | if (charger->battery_critical) | ||
| 389 | charger->battery_critical(); | ||
| 390 | } | ||
| 391 | } | ||
| 392 | |||
| 393 | static int da9030_battery_event(struct notifier_block *nb, unsigned long event, | ||
| 394 | void *data) | ||
| 395 | { | ||
| 396 | struct da9030_charger *charger = | ||
| 397 | container_of(nb, struct da9030_charger, nb); | ||
| 398 | int status; | ||
| 399 | |||
| 400 | switch (event) { | ||
| 401 | case DA9030_EVENT_CHDET: | ||
| 402 | status = da903x_query_status(charger->master, | ||
| 403 | DA9030_STATUS_CHDET); | ||
| 404 | da9030_set_charge(charger, status); | ||
| 405 | break; | ||
| 406 | case DA9030_EVENT_VBATMON: | ||
| 407 | da9030_battery_vbat_event(charger); | ||
| 408 | break; | ||
| 409 | case DA9030_EVENT_CHIOVER: | ||
| 410 | case DA9030_EVENT_TBAT: | ||
| 411 | da9030_set_charge(charger, 0); | ||
| 412 | break; | ||
| 413 | } | ||
| 414 | |||
| 415 | return 0; | ||
| 416 | } | ||
| 417 | |||
| 418 | static void da9030_battery_convert_thresholds(struct da9030_charger *charger, | ||
| 419 | struct da9030_battery_info *pdata) | ||
| 420 | { | ||
| 421 | charger->thresholds.tbat_low = pdata->tbat_low; | ||
| 422 | charger->thresholds.tbat_high = pdata->tbat_high; | ||
| 423 | charger->thresholds.tbat_restart = pdata->tbat_restart; | ||
| 424 | |||
| 425 | charger->thresholds.vbat_low = | ||
| 426 | da9030_millivolt_to_reg(pdata->vbat_low); | ||
| 427 | charger->thresholds.vbat_crit = | ||
| 428 | da9030_millivolt_to_reg(pdata->vbat_crit); | ||
| 429 | charger->thresholds.vbat_charge_start = | ||
| 430 | da9030_millivolt_to_reg(pdata->vbat_charge_start); | ||
| 431 | charger->thresholds.vbat_charge_stop = | ||
| 432 | da9030_millivolt_to_reg(pdata->vbat_charge_stop); | ||
| 433 | charger->thresholds.vbat_charge_restart = | ||
| 434 | da9030_millivolt_to_reg(pdata->vbat_charge_restart); | ||
| 435 | |||
| 436 | charger->thresholds.vcharge_min = | ||
| 437 | da9030_millivolt_to_reg(pdata->vcharge_min); | ||
| 438 | charger->thresholds.vcharge_max = | ||
| 439 | da9030_millivolt_to_reg(pdata->vcharge_max); | ||
| 440 | } | ||
| 441 | |||
| 442 | static void da9030_battery_setup_psy(struct da9030_charger *charger) | ||
| 443 | { | ||
| 444 | struct power_supply *psy = &charger->psy; | ||
| 445 | struct power_supply_info *info = charger->battery_info; | ||
| 446 | |||
| 447 | psy->name = info->name; | ||
| 448 | psy->use_for_apm = info->use_for_apm; | ||
| 449 | psy->type = POWER_SUPPLY_TYPE_BATTERY; | ||
| 450 | psy->get_property = da9030_battery_get_property; | ||
| 451 | |||
| 452 | psy->properties = da9030_battery_props; | ||
| 453 | psy->num_properties = ARRAY_SIZE(da9030_battery_props); | ||
| 454 | }; | ||
| 455 | |||
| 456 | static int da9030_battery_charger_init(struct da9030_charger *charger) | ||
| 457 | { | ||
| 458 | char v[5]; | ||
| 459 | int ret; | ||
| 460 | |||
| 461 | v[0] = v[1] = charger->thresholds.vbat_low; | ||
| 462 | v[2] = charger->thresholds.tbat_high; | ||
| 463 | v[3] = charger->thresholds.tbat_restart; | ||
| 464 | v[4] = charger->thresholds.tbat_low; | ||
| 465 | |||
| 466 | ret = da903x_writes(charger->master, DA9030_VBATMON, 5, v); | ||
| 467 | if (ret) | ||
| 468 | return ret; | ||
| 469 | |||
| 470 | /* | ||
| 471 | * Enable reference voltage supply for ADC from the LDO_INTERNAL | ||
| 472 | * regulator. Must be set before ADC measurements can be made. | ||
| 473 | */ | ||
| 474 | ret = da903x_write(charger->master, DA9030_ADC_MAN_CONTROL, | ||
| 475 | DA9030_ADC_LDO_INT_ENABLE | | ||
| 476 | DA9030_ADC_TBATREF_ENABLE); | ||
| 477 | if (ret) | ||
| 478 | return ret; | ||
| 479 | |||
| 480 | /* enable auto ADC measuremnts */ | ||
| 481 | return da903x_write(charger->master, DA9030_ADC_AUTO_CONTROL, | ||
| 482 | DA9030_ADC_TBAT_ENABLE | DA9030_ADC_VBAT_IN_TXON | | ||
| 483 | DA9030_ADC_VCH_ENABLE | DA9030_ADC_ICH_ENABLE | | ||
| 484 | DA9030_ADC_VBAT_ENABLE | | ||
| 485 | DA9030_ADC_AUTO_SLEEP_ENABLE); | ||
| 486 | } | ||
| 487 | |||
| 488 | static int da9030_battery_probe(struct platform_device *pdev) | ||
| 489 | { | ||
| 490 | struct da9030_charger *charger; | ||
| 491 | struct da9030_battery_info *pdata = pdev->dev.platform_data; | ||
| 492 | int ret; | ||
| 493 | |||
| 494 | if (pdata == NULL) | ||
| 495 | return -EINVAL; | ||
| 496 | |||
| 497 | if (pdata->charge_milliamp >= 1500 || | ||
| 498 | pdata->charge_millivolt < 4000 || | ||
| 499 | pdata->charge_millivolt > 4350) | ||
| 500 | return -EINVAL; | ||
| 501 | |||
| 502 | charger = kzalloc(sizeof(*charger), GFP_KERNEL); | ||
| 503 | if (charger == NULL) | ||
| 504 | return -ENOMEM; | ||
| 505 | |||
| 506 | charger->master = pdev->dev.parent; | ||
| 507 | |||
| 508 | /* 10 seconds between monotor runs unless platfrom defines other | ||
| 509 | interval */ | ||
| 510 | charger->interval = msecs_to_jiffies( | ||
| 511 | (pdata->batmon_interval ? : 10) * 1000); | ||
| 512 | |||
| 513 | charger->charge_milliamp = pdata->charge_milliamp; | ||
| 514 | charger->charge_millivolt = pdata->charge_millivolt; | ||
| 515 | charger->battery_info = pdata->battery_info; | ||
| 516 | charger->battery_low = pdata->battery_low; | ||
| 517 | charger->battery_critical = pdata->battery_critical; | ||
| 518 | |||
| 519 | da9030_battery_convert_thresholds(charger, pdata); | ||
| 520 | |||
| 521 | ret = da9030_battery_charger_init(charger); | ||
| 522 | if (ret) | ||
| 523 | goto err_charger_init; | ||
| 524 | |||
| 525 | INIT_DELAYED_WORK(&charger->work, da9030_charging_monitor); | ||
| 526 | schedule_delayed_work(&charger->work, charger->interval); | ||
| 527 | |||
| 528 | charger->nb.notifier_call = da9030_battery_event; | ||
| 529 | ret = da903x_register_notifier(charger->master, &charger->nb, | ||
| 530 | DA9030_EVENT_CHDET | | ||
| 531 | DA9030_EVENT_VBATMON | | ||
| 532 | DA9030_EVENT_CHIOVER | | ||
| 533 | DA9030_EVENT_TBAT); | ||
| 534 | if (ret) | ||
| 535 | goto err_notifier; | ||
| 536 | |||
| 537 | da9030_battery_setup_psy(charger); | ||
| 538 | ret = power_supply_register(&pdev->dev, &charger->psy); | ||
| 539 | if (ret) | ||
| 540 | goto err_ps_register; | ||
| 541 | |||
| 542 | charger->debug_file = da9030_bat_create_debugfs(charger); | ||
| 543 | platform_set_drvdata(pdev, charger); | ||
| 544 | return 0; | ||
| 545 | |||
| 546 | err_ps_register: | ||
| 547 | da903x_unregister_notifier(charger->master, &charger->nb, | ||
| 548 | DA9030_EVENT_CHDET | DA9030_EVENT_VBATMON | | ||
| 549 | DA9030_EVENT_CHIOVER | DA9030_EVENT_TBAT); | ||
| 550 | err_notifier: | ||
| 551 | cancel_delayed_work(&charger->work); | ||
| 552 | |||
| 553 | err_charger_init: | ||
| 554 | kfree(charger); | ||
| 555 | |||
| 556 | return ret; | ||
| 557 | } | ||
| 558 | |||
| 559 | static int da9030_battery_remove(struct platform_device *dev) | ||
| 560 | { | ||
| 561 | struct da9030_charger *charger = platform_get_drvdata(dev); | ||
| 562 | |||
| 563 | da9030_bat_remove_debugfs(charger); | ||
| 564 | |||
| 565 | da903x_unregister_notifier(charger->master, &charger->nb, | ||
| 566 | DA9030_EVENT_CHDET | DA9030_EVENT_VBATMON | | ||
| 567 | DA9030_EVENT_CHIOVER | DA9030_EVENT_TBAT); | ||
| 568 | cancel_delayed_work(&charger->work); | ||
| 569 | power_supply_unregister(&charger->psy); | ||
| 570 | |||
| 571 | kfree(charger); | ||
| 572 | |||
| 573 | return 0; | ||
| 574 | } | ||
| 575 | |||
| 576 | static struct platform_driver da903x_battery_driver = { | ||
| 577 | .driver = { | ||
| 578 | .name = "da903x-battery", | ||
| 579 | .owner = THIS_MODULE, | ||
| 580 | }, | ||
| 581 | .probe = da9030_battery_probe, | ||
| 582 | .remove = da9030_battery_remove, | ||
| 583 | }; | ||
| 584 | |||
| 585 | static int da903x_battery_init(void) | ||
| 586 | { | ||
| 587 | return platform_driver_register(&da903x_battery_driver); | ||
| 588 | } | ||
| 589 | |||
| 590 | static void da903x_battery_exit(void) | ||
| 591 | { | ||
| 592 | platform_driver_unregister(&da903x_battery_driver); | ||
| 593 | } | ||
| 594 | |||
| 595 | module_init(da903x_battery_init); | ||
| 596 | module_exit(da903x_battery_exit); | ||
| 597 | |||
| 598 | MODULE_DESCRIPTION("DA9030 battery charger driver"); | ||
| 599 | MODULE_AUTHOR("Mike Rapoport, CompuLab"); | ||
| 600 | MODULE_LICENSE("GPL"); | ||
