2 * axp288_fuel_gauge.c - Xpower AXP288 PMIC Fuel Gauge Driver
4 * Copyright (C) 2014 Intel Corporation
6 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; version 2 of the License.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
19 #include <linux/module.h>
20 #include <linux/kernel.h>
21 #include <linux/device.h>
22 #include <linux/regmap.h>
23 #include <linux/jiffies.h>
24 #include <linux/interrupt.h>
25 #include <linux/workqueue.h>
26 #include <linux/mfd/axp20x.h>
27 #include <linux/platform_device.h>
28 #include <linux/power_supply.h>
29 #include <linux/iio/consumer.h>
30 #include <linux/debugfs.h>
31 #include <linux/seq_file.h>
32 #include <asm/unaligned.h>
34 #define CHRG_STAT_BAT_SAFE_MODE (1 << 3)
35 #define CHRG_STAT_BAT_VALID (1 << 4)
36 #define CHRG_STAT_BAT_PRESENT (1 << 5)
37 #define CHRG_STAT_CHARGING (1 << 6)
38 #define CHRG_STAT_PMIC_OTP (1 << 7)
40 #define CHRG_CCCV_CC_MASK 0xf /* 4 bits */
41 #define CHRG_CCCV_CC_BIT_POS 0
42 #define CHRG_CCCV_CC_OFFSET 200 /* 200mA */
43 #define CHRG_CCCV_CC_LSB_RES 200 /* 200mA */
44 #define CHRG_CCCV_ITERM_20P (1 << 4) /* 20% of CC */
45 #define CHRG_CCCV_CV_MASK 0x60 /* 2 bits */
46 #define CHRG_CCCV_CV_BIT_POS 5
47 #define CHRG_CCCV_CV_4100MV 0x0 /* 4.10V */
48 #define CHRG_CCCV_CV_4150MV 0x1 /* 4.15V */
49 #define CHRG_CCCV_CV_4200MV 0x2 /* 4.20V */
50 #define CHRG_CCCV_CV_4350MV 0x3 /* 4.35V */
51 #define CHRG_CCCV_CHG_EN (1 << 7)
53 #define FG_CNTL_OCV_ADJ_STAT (1 << 2)
54 #define FG_CNTL_OCV_ADJ_EN (1 << 3)
55 #define FG_CNTL_CAP_ADJ_STAT (1 << 4)
56 #define FG_CNTL_CAP_ADJ_EN (1 << 5)
57 #define FG_CNTL_CC_EN (1 << 6)
58 #define FG_CNTL_GAUGE_EN (1 << 7)
60 #define FG_15BIT_WORD_VALID (1 << 15)
61 #define FG_15BIT_VAL_MASK 0x7fff
63 #define FG_REP_CAP_VALID (1 << 7)
64 #define FG_REP_CAP_VAL_MASK 0x7F
66 #define FG_DES_CAP1_VALID (1 << 7)
67 #define FG_DES_CAP_RES_LSB 1456 /* 1.456mAhr */
69 #define FG_DES_CC_RES_LSB 1456 /* 1.456mAhr */
71 #define FG_OCV_CAP_VALID (1 << 7)
72 #define FG_OCV_CAP_VAL_MASK 0x7F
73 #define FG_CC_CAP_VALID (1 << 7)
74 #define FG_CC_CAP_VAL_MASK 0x7F
76 #define FG_LOW_CAP_THR1_MASK 0xf0 /* 5% tp 20% */
77 #define FG_LOW_CAP_THR1_VAL 0xa0 /* 15 perc */
78 #define FG_LOW_CAP_THR2_MASK 0x0f /* 0% to 15% */
79 #define FG_LOW_CAP_WARN_THR 14 /* 14 perc */
80 #define FG_LOW_CAP_CRIT_THR 4 /* 4 perc */
81 #define FG_LOW_CAP_SHDN_THR 0 /* 0 perc */
83 #define STATUS_MON_DELAY_JIFFIES (HZ * 60) /*60 sec */
84 #define NR_RETRY_CNT 3
85 #define DEV_NAME "axp288_fuel_gauge"
87 /* 1.1mV per LSB expressed in uV */
88 #define VOLTAGE_FROM_ADC(a) ((a * 11) / 10)
89 /* properties converted to uV, uA */
90 #define PROP_VOLT(a) ((a) * 1000)
91 #define PROP_CURR(a) ((a) * 1000)
93 #define AXP288_FG_INTR_NUM 6
103 struct axp288_fg_info {
104 struct platform_device *pdev;
105 struct regmap *regmap;
106 struct regmap_irq_chip_data *regmap_irqc;
107 int irq[AXP288_FG_INTR_NUM];
108 struct power_supply *bat;
112 struct delayed_work status_monitor;
113 struct dentry *debug_file;
116 static enum power_supply_property fuel_gauge_props[] = {
117 POWER_SUPPLY_PROP_STATUS,
118 POWER_SUPPLY_PROP_PRESENT,
119 POWER_SUPPLY_PROP_HEALTH,
120 POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
121 POWER_SUPPLY_PROP_VOLTAGE_NOW,
122 POWER_SUPPLY_PROP_VOLTAGE_OCV,
123 POWER_SUPPLY_PROP_CURRENT_NOW,
124 POWER_SUPPLY_PROP_CAPACITY,
125 POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN,
126 POWER_SUPPLY_PROP_TECHNOLOGY,
127 POWER_SUPPLY_PROP_CHARGE_FULL,
128 POWER_SUPPLY_PROP_CHARGE_NOW,
131 static int fuel_gauge_reg_readb(struct axp288_fg_info *info, int reg)
136 for (i = 0; i < NR_RETRY_CNT; i++) {
137 ret = regmap_read(info->regmap, reg, &val);
145 dev_err(&info->pdev->dev, "axp288 reg read err:%d\n", ret);
152 static int fuel_gauge_reg_writeb(struct axp288_fg_info *info, int reg, u8 val)
156 ret = regmap_write(info->regmap, reg, (unsigned int)val);
159 dev_err(&info->pdev->dev, "axp288 reg write err:%d\n", ret);
164 static int fuel_gauge_read_15bit_word(struct axp288_fg_info *info, int reg)
166 unsigned char buf[2];
169 ret = regmap_bulk_read(info->regmap, reg, buf, 2);
171 dev_err(&info->pdev->dev, "Error reading reg 0x%02x err: %d\n",
176 ret = get_unaligned_be16(buf);
177 if (!(ret & FG_15BIT_WORD_VALID)) {
178 dev_err(&info->pdev->dev, "Error reg 0x%02x contents not valid\n",
183 return ret & FG_15BIT_VAL_MASK;
186 static int fuel_gauge_read_12bit_word(struct axp288_fg_info *info, int reg)
188 unsigned char buf[2];
191 ret = regmap_bulk_read(info->regmap, reg, buf, 2);
193 dev_err(&info->pdev->dev, "Error reading reg 0x%02x err: %d\n",
198 /* 12-bit data values have upper 8 bits in buf[0], lower 4 in buf[1] */
199 return (buf[0] << 4) | ((buf[1] >> 4) & 0x0f);
202 static int pmic_read_adc_val(const char *name, int *raw_val,
203 struct axp288_fg_info *info)
206 struct iio_channel *indio_chan;
208 indio_chan = iio_channel_get(NULL, name);
209 if (IS_ERR_OR_NULL(indio_chan)) {
210 ret = PTR_ERR(indio_chan);
213 ret = iio_read_channel_raw(indio_chan, &val);
215 dev_err(&info->pdev->dev,
216 "IIO channel read error: %x, %x\n", ret, val);
220 dev_dbg(&info->pdev->dev, "adc raw val=%x\n", val);
224 iio_channel_release(indio_chan);
229 #ifdef CONFIG_DEBUG_FS
230 static int fuel_gauge_debug_show(struct seq_file *s, void *data)
232 struct axp288_fg_info *info = s->private;
235 seq_printf(s, " PWR_STATUS[%02x] : %02x\n",
236 AXP20X_PWR_INPUT_STATUS,
237 fuel_gauge_reg_readb(info, AXP20X_PWR_INPUT_STATUS));
238 seq_printf(s, "PWR_OP_MODE[%02x] : %02x\n",
240 fuel_gauge_reg_readb(info, AXP20X_PWR_OP_MODE));
241 seq_printf(s, " CHRG_CTRL1[%02x] : %02x\n",
243 fuel_gauge_reg_readb(info, AXP20X_CHRG_CTRL1));
244 seq_printf(s, " VLTF[%02x] : %02x\n",
245 AXP20X_V_LTF_DISCHRG,
246 fuel_gauge_reg_readb(info, AXP20X_V_LTF_DISCHRG));
247 seq_printf(s, " VHTF[%02x] : %02x\n",
248 AXP20X_V_HTF_DISCHRG,
249 fuel_gauge_reg_readb(info, AXP20X_V_HTF_DISCHRG));
250 seq_printf(s, " CC_CTRL[%02x] : %02x\n",
252 fuel_gauge_reg_readb(info, AXP20X_CC_CTRL));
253 seq_printf(s, "BATTERY CAP[%02x] : %02x\n",
255 fuel_gauge_reg_readb(info, AXP20X_FG_RES));
256 seq_printf(s, " FG_RDC1[%02x] : %02x\n",
258 fuel_gauge_reg_readb(info, AXP288_FG_RDC1_REG));
259 seq_printf(s, " FG_RDC0[%02x] : %02x\n",
261 fuel_gauge_reg_readb(info, AXP288_FG_RDC0_REG));
262 seq_printf(s, " FG_OCV[%02x] : %04x\n",
264 fuel_gauge_read_12bit_word(info, AXP288_FG_OCVH_REG));
265 seq_printf(s, " FG_DES_CAP[%02x] : %04x\n",
266 AXP288_FG_DES_CAP1_REG,
267 fuel_gauge_read_15bit_word(info, AXP288_FG_DES_CAP1_REG));
268 seq_printf(s, " FG_CC_MTR[%02x] : %04x\n",
269 AXP288_FG_CC_MTR1_REG,
270 fuel_gauge_read_15bit_word(info, AXP288_FG_CC_MTR1_REG));
271 seq_printf(s, " FG_OCV_CAP[%02x] : %02x\n",
272 AXP288_FG_OCV_CAP_REG,
273 fuel_gauge_reg_readb(info, AXP288_FG_OCV_CAP_REG));
274 seq_printf(s, " FG_CC_CAP[%02x] : %02x\n",
275 AXP288_FG_CC_CAP_REG,
276 fuel_gauge_reg_readb(info, AXP288_FG_CC_CAP_REG));
277 seq_printf(s, " FG_LOW_CAP[%02x] : %02x\n",
278 AXP288_FG_LOW_CAP_REG,
279 fuel_gauge_reg_readb(info, AXP288_FG_LOW_CAP_REG));
280 seq_printf(s, "TUNING_CTL0[%02x] : %02x\n",
282 fuel_gauge_reg_readb(info, AXP288_FG_TUNE0));
283 seq_printf(s, "TUNING_CTL1[%02x] : %02x\n",
285 fuel_gauge_reg_readb(info, AXP288_FG_TUNE1));
286 seq_printf(s, "TUNING_CTL2[%02x] : %02x\n",
288 fuel_gauge_reg_readb(info, AXP288_FG_TUNE2));
289 seq_printf(s, "TUNING_CTL3[%02x] : %02x\n",
291 fuel_gauge_reg_readb(info, AXP288_FG_TUNE3));
292 seq_printf(s, "TUNING_CTL4[%02x] : %02x\n",
294 fuel_gauge_reg_readb(info, AXP288_FG_TUNE4));
295 seq_printf(s, "TUNING_CTL5[%02x] : %02x\n",
297 fuel_gauge_reg_readb(info, AXP288_FG_TUNE5));
299 ret = pmic_read_adc_val("axp288-batt-temp", &raw_val, info);
301 seq_printf(s, "axp288-batttemp : %d\n", raw_val);
302 ret = pmic_read_adc_val("axp288-pmic-temp", &raw_val, info);
304 seq_printf(s, "axp288-pmictemp : %d\n", raw_val);
305 ret = pmic_read_adc_val("axp288-system-temp", &raw_val, info);
307 seq_printf(s, "axp288-systtemp : %d\n", raw_val);
308 ret = pmic_read_adc_val("axp288-chrg-curr", &raw_val, info);
310 seq_printf(s, "axp288-chrgcurr : %d\n", raw_val);
311 ret = pmic_read_adc_val("axp288-chrg-d-curr", &raw_val, info);
313 seq_printf(s, "axp288-dchrgcur : %d\n", raw_val);
314 ret = pmic_read_adc_val("axp288-batt-volt", &raw_val, info);
316 seq_printf(s, "axp288-battvolt : %d\n", raw_val);
321 static int debug_open(struct inode *inode, struct file *file)
323 return single_open(file, fuel_gauge_debug_show, inode->i_private);
326 static const struct file_operations fg_debug_fops = {
330 .release = single_release,
333 static void fuel_gauge_create_debugfs(struct axp288_fg_info *info)
335 info->debug_file = debugfs_create_file("fuelgauge", 0666, NULL,
336 info, &fg_debug_fops);
339 static void fuel_gauge_remove_debugfs(struct axp288_fg_info *info)
341 debugfs_remove(info->debug_file);
344 static inline void fuel_gauge_create_debugfs(struct axp288_fg_info *info)
347 static inline void fuel_gauge_remove_debugfs(struct axp288_fg_info *info)
352 static void fuel_gauge_get_status(struct axp288_fg_info *info)
355 int charge, discharge;
357 pwr_stat = fuel_gauge_reg_readb(info, AXP20X_PWR_INPUT_STATUS);
359 dev_err(&info->pdev->dev,
360 "PWR STAT read failed:%d\n", pwr_stat);
363 ret = pmic_read_adc_val("axp288-chrg-curr", &charge, info);
365 dev_err(&info->pdev->dev,
366 "ADC charge current read failed:%d\n", ret);
369 ret = pmic_read_adc_val("axp288-chrg-d-curr", &discharge, info);
371 dev_err(&info->pdev->dev,
372 "ADC discharge current read failed:%d\n", ret);
377 info->status = POWER_SUPPLY_STATUS_CHARGING;
378 else if (discharge > 0)
379 info->status = POWER_SUPPLY_STATUS_DISCHARGING;
381 if (pwr_stat & CHRG_STAT_BAT_PRESENT)
382 info->status = POWER_SUPPLY_STATUS_FULL;
384 info->status = POWER_SUPPLY_STATUS_NOT_CHARGING;
388 static int fuel_gauge_get_vbatt(struct axp288_fg_info *info, int *vbatt)
390 int ret = 0, raw_val;
392 ret = pmic_read_adc_val("axp288-batt-volt", &raw_val, info);
394 goto vbatt_read_fail;
396 *vbatt = VOLTAGE_FROM_ADC(raw_val);
401 static int fuel_gauge_get_current(struct axp288_fg_info *info, int *cur)
404 int charge, discharge;
406 ret = pmic_read_adc_val("axp288-chrg-curr", &charge, info);
408 goto current_read_fail;
409 ret = pmic_read_adc_val("axp288-chrg-d-curr", &discharge, info);
411 goto current_read_fail;
415 else if (discharge > 0)
416 value = -1 * discharge;
423 static int fuel_gauge_get_vocv(struct axp288_fg_info *info, int *vocv)
427 ret = fuel_gauge_read_12bit_word(info, AXP288_FG_OCVH_REG);
429 *vocv = VOLTAGE_FROM_ADC(ret);
434 static int fuel_gauge_battery_health(struct axp288_fg_info *info)
436 int ret, vocv, health = POWER_SUPPLY_HEALTH_UNKNOWN;
438 ret = fuel_gauge_get_vocv(info, &vocv);
440 goto health_read_fail;
442 if (vocv > info->max_volt)
443 health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
445 health = POWER_SUPPLY_HEALTH_GOOD;
451 static int fuel_gauge_get_property(struct power_supply *ps,
452 enum power_supply_property prop,
453 union power_supply_propval *val)
455 struct axp288_fg_info *info = power_supply_get_drvdata(ps);
458 mutex_lock(&info->lock);
460 case POWER_SUPPLY_PROP_STATUS:
461 fuel_gauge_get_status(info);
462 val->intval = info->status;
464 case POWER_SUPPLY_PROP_HEALTH:
465 val->intval = fuel_gauge_battery_health(info);
467 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
468 ret = fuel_gauge_get_vbatt(info, &value);
470 goto fuel_gauge_read_err;
471 val->intval = PROP_VOLT(value);
473 case POWER_SUPPLY_PROP_VOLTAGE_OCV:
474 ret = fuel_gauge_get_vocv(info, &value);
476 goto fuel_gauge_read_err;
477 val->intval = PROP_VOLT(value);
479 case POWER_SUPPLY_PROP_CURRENT_NOW:
480 ret = fuel_gauge_get_current(info, &value);
482 goto fuel_gauge_read_err;
483 val->intval = PROP_CURR(value);
485 case POWER_SUPPLY_PROP_PRESENT:
486 ret = fuel_gauge_reg_readb(info, AXP20X_PWR_OP_MODE);
488 goto fuel_gauge_read_err;
490 if (ret & CHRG_STAT_BAT_PRESENT)
495 case POWER_SUPPLY_PROP_CAPACITY:
496 ret = fuel_gauge_reg_readb(info, AXP20X_FG_RES);
498 goto fuel_gauge_read_err;
500 if (!(ret & FG_REP_CAP_VALID))
501 dev_err(&info->pdev->dev,
502 "capacity measurement not valid\n");
503 val->intval = (ret & FG_REP_CAP_VAL_MASK);
505 case POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN:
506 ret = fuel_gauge_reg_readb(info, AXP288_FG_LOW_CAP_REG);
508 goto fuel_gauge_read_err;
509 val->intval = (ret & 0x0f);
511 case POWER_SUPPLY_PROP_TECHNOLOGY:
512 val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
514 case POWER_SUPPLY_PROP_CHARGE_NOW:
515 ret = fuel_gauge_read_15bit_word(info, AXP288_FG_CC_MTR1_REG);
517 goto fuel_gauge_read_err;
519 val->intval = ret * FG_DES_CAP_RES_LSB;
521 case POWER_SUPPLY_PROP_CHARGE_FULL:
522 ret = fuel_gauge_read_15bit_word(info, AXP288_FG_DES_CAP1_REG);
524 goto fuel_gauge_read_err;
526 val->intval = ret * FG_DES_CAP_RES_LSB;
528 case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
529 val->intval = PROP_VOLT(info->max_volt);
532 mutex_unlock(&info->lock);
536 mutex_unlock(&info->lock);
540 mutex_unlock(&info->lock);
544 static int fuel_gauge_set_property(struct power_supply *ps,
545 enum power_supply_property prop,
546 const union power_supply_propval *val)
548 struct axp288_fg_info *info = power_supply_get_drvdata(ps);
551 mutex_lock(&info->lock);
553 case POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN:
554 if ((val->intval < 0) || (val->intval > 15)) {
558 ret = fuel_gauge_reg_readb(info, AXP288_FG_LOW_CAP_REG);
562 ret |= (val->intval & 0xf);
563 ret = fuel_gauge_reg_writeb(info, AXP288_FG_LOW_CAP_REG, ret);
570 mutex_unlock(&info->lock);
574 static int fuel_gauge_property_is_writeable(struct power_supply *psy,
575 enum power_supply_property psp)
580 case POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN:
590 static void fuel_gauge_status_monitor(struct work_struct *work)
592 struct axp288_fg_info *info = container_of(work,
593 struct axp288_fg_info, status_monitor.work);
595 fuel_gauge_get_status(info);
596 power_supply_changed(info->bat);
597 schedule_delayed_work(&info->status_monitor, STATUS_MON_DELAY_JIFFIES);
600 static irqreturn_t fuel_gauge_thread_handler(int irq, void *dev)
602 struct axp288_fg_info *info = dev;
605 for (i = 0; i < AXP288_FG_INTR_NUM; i++) {
606 if (info->irq[i] == irq)
610 if (i >= AXP288_FG_INTR_NUM) {
611 dev_warn(&info->pdev->dev, "spurious interrupt!!\n");
617 dev_info(&info->pdev->dev,
618 "Quit Battery under temperature in work mode IRQ (QWBTU)\n");
621 dev_info(&info->pdev->dev,
622 "Battery under temperature in work mode IRQ (WBTU)\n");
625 dev_info(&info->pdev->dev,
626 "Quit Battery over temperature in work mode IRQ (QWBTO)\n");
629 dev_info(&info->pdev->dev,
630 "Battery over temperature in work mode IRQ (WBTO)\n");
633 dev_info(&info->pdev->dev, "Low Batt Warning(2) INTR\n");
636 dev_info(&info->pdev->dev, "Low Batt Warning(1) INTR\n");
639 dev_warn(&info->pdev->dev, "Spurious Interrupt!!!\n");
642 power_supply_changed(info->bat);
646 static void fuel_gauge_external_power_changed(struct power_supply *psy)
648 struct axp288_fg_info *info = power_supply_get_drvdata(psy);
650 power_supply_changed(info->bat);
653 static const struct power_supply_desc fuel_gauge_desc = {
655 .type = POWER_SUPPLY_TYPE_BATTERY,
656 .properties = fuel_gauge_props,
657 .num_properties = ARRAY_SIZE(fuel_gauge_props),
658 .get_property = fuel_gauge_get_property,
659 .set_property = fuel_gauge_set_property,
660 .property_is_writeable = fuel_gauge_property_is_writeable,
661 .external_power_changed = fuel_gauge_external_power_changed,
664 static void fuel_gauge_init_irq(struct axp288_fg_info *info)
668 for (i = 0; i < AXP288_FG_INTR_NUM; i++) {
669 pirq = platform_get_irq(info->pdev, i);
670 info->irq[i] = regmap_irq_get_virq(info->regmap_irqc, pirq);
671 if (info->irq[i] < 0) {
672 dev_warn(&info->pdev->dev,
673 "regmap_irq get virq failed for IRQ %d: %d\n",
678 ret = request_threaded_irq(info->irq[i],
679 NULL, fuel_gauge_thread_handler,
680 IRQF_ONESHOT, DEV_NAME, info);
682 dev_warn(&info->pdev->dev,
683 "request irq failed for IRQ %d: %d\n",
688 dev_info(&info->pdev->dev, "HW IRQ %d -> VIRQ %d\n",
696 free_irq(info->irq[i - 1], info);
697 info->irq[i - 1] = -1;
701 static int axp288_fuel_gauge_probe(struct platform_device *pdev)
704 struct axp288_fg_info *info;
705 struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
706 struct power_supply_config psy_cfg = {};
708 info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
713 info->regmap = axp20x->regmap;
714 info->regmap_irqc = axp20x->regmap_irqc;
715 info->status = POWER_SUPPLY_STATUS_UNKNOWN;
717 platform_set_drvdata(pdev, info);
719 mutex_init(&info->lock);
720 INIT_DELAYED_WORK(&info->status_monitor, fuel_gauge_status_monitor);
722 ret = fuel_gauge_reg_readb(info, AXP288_FG_DES_CAP1_REG);
726 if (!(ret & FG_DES_CAP1_VALID)) {
727 dev_err(&pdev->dev, "axp288 not configured by firmware\n");
731 ret = fuel_gauge_reg_readb(info, AXP20X_CHRG_CTRL1);
734 switch ((ret & CHRG_CCCV_CV_MASK) >> CHRG_CCCV_CV_BIT_POS) {
735 case CHRG_CCCV_CV_4100MV:
736 info->max_volt = 4100;
738 case CHRG_CCCV_CV_4150MV:
739 info->max_volt = 4150;
741 case CHRG_CCCV_CV_4200MV:
742 info->max_volt = 4200;
744 case CHRG_CCCV_CV_4350MV:
745 info->max_volt = 4350;
749 psy_cfg.drv_data = info;
750 info->bat = power_supply_register(&pdev->dev, &fuel_gauge_desc, &psy_cfg);
751 if (IS_ERR(info->bat)) {
752 ret = PTR_ERR(info->bat);
753 dev_err(&pdev->dev, "failed to register battery: %d\n", ret);
757 fuel_gauge_create_debugfs(info);
758 fuel_gauge_init_irq(info);
759 schedule_delayed_work(&info->status_monitor, STATUS_MON_DELAY_JIFFIES);
764 static const struct platform_device_id axp288_fg_id_table[] = {
765 { .name = DEV_NAME },
768 MODULE_DEVICE_TABLE(platform, axp288_fg_id_table);
770 static int axp288_fuel_gauge_remove(struct platform_device *pdev)
772 struct axp288_fg_info *info = platform_get_drvdata(pdev);
775 cancel_delayed_work_sync(&info->status_monitor);
776 power_supply_unregister(info->bat);
777 fuel_gauge_remove_debugfs(info);
779 for (i = 0; i < AXP288_FG_INTR_NUM; i++)
780 if (info->irq[i] >= 0)
781 free_irq(info->irq[i], info);
786 static struct platform_driver axp288_fuel_gauge_driver = {
787 .probe = axp288_fuel_gauge_probe,
788 .remove = axp288_fuel_gauge_remove,
789 .id_table = axp288_fg_id_table,
795 module_platform_driver(axp288_fuel_gauge_driver);
797 MODULE_AUTHOR("Ramakrishna Pallala <ramakrishna.pallala@intel.com>");
798 MODULE_AUTHOR("Todd Brandt <todd.e.brandt@linux.intel.com>");
799 MODULE_DESCRIPTION("Xpower AXP288 Fuel Gauge Driver");
800 MODULE_LICENSE("GPL");