| /* |
| * Battery driver for Marvell 88PM860x PMIC |
| * |
| * Copyright (c) 2012 Marvell International Ltd. |
| * Author: Jett Zhou <jtzhou@marvell.com> |
| * Haojian Zhuang <haojian.zhuang@marvell.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/slab.h> |
| #include <linux/power_supply.h> |
| #include <linux/mfd/88pm860x.h> |
| #include <linux/delay.h> |
| #include <linux/uaccess.h> |
| #include <asm/div64.h> |
| |
| /* bit definitions of Status Query Interface 2 */ |
| #define STATUS2_CHG (1 << 2) |
| |
| /* bit definitions of Reset Out Register */ |
| #define RESET_SW_PD (1 << 7) |
| |
| /* bit definitions of PreReg 1 */ |
| #define PREREG1_90MA (0x0) |
| #define PREREG1_180MA (0x1) |
| #define PREREG1_450MA (0x4) |
| #define PREREG1_540MA (0x5) |
| #define PREREG1_1350MA (0xE) |
| #define PREREG1_VSYS_4_5V (3 << 4) |
| |
| /* bit definitions of Charger Control 1 Register */ |
| #define CC1_MODE_OFF (0) |
| #define CC1_MODE_PRECHARGE (1) |
| #define CC1_MODE_FASTCHARGE (2) |
| #define CC1_MODE_PULSECHARGE (3) |
| #define CC1_ITERM_20MA (0 << 2) |
| #define CC1_ITERM_60MA (2 << 2) |
| #define CC1_VFCHG_4_2V (9 << 4) |
| |
| /* bit definitions of Charger Control 2 Register */ |
| #define CC2_ICHG_100MA (0x1) |
| #define CC2_ICHG_500MA (0x9) |
| #define CC2_ICHG_1000MA (0x13) |
| |
| /* bit definitions of Charger Control 3 Register */ |
| #define CC3_180MIN_TIMEOUT (0x6 << 4) |
| #define CC3_270MIN_TIMEOUT (0x7 << 4) |
| #define CC3_360MIN_TIMEOUT (0xA << 4) |
| #define CC3_DISABLE_TIMEOUT (0xF << 4) |
| |
| /* bit definitions of Charger Control 4 Register */ |
| #define CC4_IPRE_40MA (7) |
| #define CC4_VPCHG_3_2V (3 << 4) |
| #define CC4_IFCHG_MON_EN (1 << 6) |
| #define CC4_BTEMP_MON_EN (1 << 7) |
| |
| /* bit definitions of Charger Control 6 Register */ |
| #define CC6_BAT_OV_EN (1 << 2) |
| #define CC6_BAT_UV_EN (1 << 3) |
| #define CC6_UV_VBAT_SET (0x3 << 6) /* 2.8v */ |
| |
| /* bit definitions of Charger Control 7 Register */ |
| #define CC7_BAT_REM_EN (1 << 3) |
| #define CC7_IFSM_EN (1 << 7) |
| |
| /* bit definitions of Measurement Enable 1 Register */ |
| #define MEAS1_VBAT (1 << 0) |
| |
| /* bit definitions of Measurement Enable 3 Register */ |
| #define MEAS3_IBAT_EN (1 << 0) |
| #define MEAS3_CC_EN (1 << 2) |
| |
| #define FSM_INIT 0 |
| #define FSM_DISCHARGE 1 |
| #define FSM_PRECHARGE 2 |
| #define FSM_FASTCHARGE 3 |
| |
| #define PRECHARGE_THRESHOLD 3100 |
| #define POWEROFF_THRESHOLD 3400 |
| #define CHARGE_THRESHOLD 4000 |
| #define DISCHARGE_THRESHOLD 4180 |
| |
| /* over-temperature on PM8606 setting */ |
| #define OVER_TEMP_FLAG (1 << 6) |
| #define OVTEMP_AUTORECOVER (1 << 3) |
| |
| /* over-voltage protect on vchg setting mv */ |
| #define VCHG_NORMAL_LOW 4200 |
| #define VCHG_NORMAL_CHECK 5800 |
| #define VCHG_NORMAL_HIGH 6000 |
| #define VCHG_OVP_LOW 5500 |
| |
| struct pm860x_charger_info { |
| struct pm860x_chip *chip; |
| struct i2c_client *i2c; |
| struct i2c_client *i2c_8606; |
| struct device *dev; |
| |
| struct power_supply usb; |
| struct mutex lock; |
| int irq_nums; |
| int irq[7]; |
| unsigned state:3; /* fsm state */ |
| unsigned online:1; /* usb charger */ |
| unsigned present:1; /* battery present */ |
| unsigned allowed:1; |
| }; |
| |
| static char *pm860x_supplied_to[] = { |
| "battery-monitor", |
| }; |
| |
| static int measure_vchg(struct pm860x_charger_info *info, int *data) |
| { |
| unsigned char buf[2]; |
| int ret = 0; |
| |
| ret = pm860x_bulk_read(info->i2c, PM8607_VCHG_MEAS1, 2, buf); |
| if (ret < 0) |
| return ret; |
| |
| *data = ((buf[0] & 0xff) << 4) | (buf[1] & 0x0f); |
| /* V_BATT_MEAS(mV) = value * 5 * 1.8 * 1000 / (2^12) */ |
| *data = ((*data & 0xfff) * 9 * 125) >> 9; |
| |
| dev_dbg(info->dev, "%s, vchg: %d mv\n", __func__, *data); |
| |
| return ret; |
| } |
| |
| static void set_vchg_threshold(struct pm860x_charger_info *info, |
| int min, int max) |
| { |
| int data; |
| |
| /* (tmp << 8) * / 5 / 1800 */ |
| if (min <= 0) |
| data = 0; |
| else |
| data = (min << 5) / 1125; |
| pm860x_reg_write(info->i2c, PM8607_VCHG_LOWTH, data); |
| dev_dbg(info->dev, "VCHG_LOWTH:%dmv, 0x%x\n", min, data); |
| |
| if (max <= 0) |
| data = 0xff; |
| else |
| data = (max << 5) / 1125; |
| pm860x_reg_write(info->i2c, PM8607_VCHG_HIGHTH, data); |
| dev_dbg(info->dev, "VCHG_HIGHTH:%dmv, 0x%x\n", max, data); |
| |
| } |
| |
| static void set_vbatt_threshold(struct pm860x_charger_info *info, |
| int min, int max) |
| { |
| int data; |
| |
| /* (tmp << 8) * 3 / 1800 */ |
| if (min <= 0) |
| data = 0; |
| else |
| data = (min << 5) / 675; |
| pm860x_reg_write(info->i2c, PM8607_VBAT_LOWTH, data); |
| dev_dbg(info->dev, "VBAT Min:%dmv, LOWTH:0x%x\n", min, data); |
| |
| if (max <= 0) |
| data = 0xff; |
| else |
| data = (max << 5) / 675; |
| pm860x_reg_write(info->i2c, PM8607_VBAT_HIGHTH, data); |
| dev_dbg(info->dev, "VBAT Max:%dmv, HIGHTH:0x%x\n", max, data); |
| |
| return; |
| } |
| |
| static int start_precharge(struct pm860x_charger_info *info) |
| { |
| int ret; |
| |
| dev_dbg(info->dev, "Start Pre-charging!\n"); |
| set_vbatt_threshold(info, 0, 0); |
| |
| ret = pm860x_reg_write(info->i2c_8606, PM8606_PREREGULATORA, |
| PREREG1_1350MA | PREREG1_VSYS_4_5V); |
| if (ret < 0) |
| goto out; |
| /* stop charging */ |
| ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3, |
| CC1_MODE_OFF); |
| if (ret < 0) |
| goto out; |
| /* set 270 minutes timeout */ |
| ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL3, (0xf << 4), |
| CC3_270MIN_TIMEOUT); |
| if (ret < 0) |
| goto out; |
| /* set precharge current, termination voltage, IBAT & TBAT monitor */ |
| ret = pm860x_reg_write(info->i2c, PM8607_CHG_CTRL4, |
| CC4_IPRE_40MA | CC4_VPCHG_3_2V | |
| CC4_IFCHG_MON_EN | CC4_BTEMP_MON_EN); |
| if (ret < 0) |
| goto out; |
| ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL7, |
| CC7_BAT_REM_EN | CC7_IFSM_EN, |
| CC7_BAT_REM_EN | CC7_IFSM_EN); |
| if (ret < 0) |
| goto out; |
| /* trigger precharge */ |
| ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3, |
| CC1_MODE_PRECHARGE); |
| out: |
| return ret; |
| } |
| |
| static int start_fastcharge(struct pm860x_charger_info *info) |
| { |
| int ret; |
| |
| dev_dbg(info->dev, "Start Fast-charging!\n"); |
| |
| /* set fastcharge termination current & voltage, disable charging */ |
| ret = pm860x_reg_write(info->i2c, PM8607_CHG_CTRL1, |
| CC1_MODE_OFF | CC1_ITERM_60MA | |
| CC1_VFCHG_4_2V); |
| if (ret < 0) |
| goto out; |
| ret = pm860x_reg_write(info->i2c_8606, PM8606_PREREGULATORA, |
| PREREG1_540MA | PREREG1_VSYS_4_5V); |
| if (ret < 0) |
| goto out; |
| ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL2, 0x1f, |
| CC2_ICHG_500MA); |
| if (ret < 0) |
| goto out; |
| /* set 270 minutes timeout */ |
| ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL3, (0xf << 4), |
| CC3_270MIN_TIMEOUT); |
| if (ret < 0) |
| goto out; |
| /* set IBAT & TBAT monitor */ |
| ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL4, |
| CC4_IFCHG_MON_EN | CC4_BTEMP_MON_EN, |
| CC4_IFCHG_MON_EN | CC4_BTEMP_MON_EN); |
| if (ret < 0) |
| goto out; |
| ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL6, |
| CC6_BAT_OV_EN | CC6_BAT_UV_EN | |
| CC6_UV_VBAT_SET, |
| CC6_BAT_OV_EN | CC6_BAT_UV_EN | |
| CC6_UV_VBAT_SET); |
| if (ret < 0) |
| goto out; |
| ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL7, |
| CC7_BAT_REM_EN | CC7_IFSM_EN, |
| CC7_BAT_REM_EN | CC7_IFSM_EN); |
| if (ret < 0) |
| goto out; |
| /* launch fast-charge */ |
| ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3, |
| CC1_MODE_FASTCHARGE); |
| /* vchg threshold setting */ |
| set_vchg_threshold(info, VCHG_NORMAL_LOW, VCHG_NORMAL_HIGH); |
| out: |
| return ret; |
| } |
| |
| static void stop_charge(struct pm860x_charger_info *info, int vbatt) |
| { |
| dev_dbg(info->dev, "Stop charging!\n"); |
| pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3, CC1_MODE_OFF); |
| if (vbatt > CHARGE_THRESHOLD && info->online) |
| set_vbatt_threshold(info, CHARGE_THRESHOLD, 0); |
| } |
| |
| static void power_off_notification(struct pm860x_charger_info *info) |
| { |
| dev_dbg(info->dev, "Power-off notification!\n"); |
| } |
| |
| static int set_charging_fsm(struct pm860x_charger_info *info) |
| { |
| struct power_supply *psy; |
| union power_supply_propval data; |
| unsigned char fsm_state[][16] = { "init", "discharge", "precharge", |
| "fastcharge", |
| }; |
| int ret; |
| int vbatt; |
| |
| psy = power_supply_get_by_name(pm860x_supplied_to[0]); |
| if (!psy) |
| return -EINVAL; |
| ret = psy->get_property(psy, POWER_SUPPLY_PROP_VOLTAGE_NOW, &data); |
| if (ret) |
| return ret; |
| vbatt = data.intval / 1000; |
| |
| ret = psy->get_property(psy, POWER_SUPPLY_PROP_PRESENT, &data); |
| if (ret) |
| return ret; |
| |
| mutex_lock(&info->lock); |
| info->present = data.intval; |
| |
| dev_dbg(info->dev, "Entering FSM:%s, Charger:%s, Battery:%s, " |
| "Allowed:%d\n", |
| &fsm_state[info->state][0], |
| (info->online) ? "online" : "N/A", |
| (info->present) ? "present" : "N/A", info->allowed); |
| dev_dbg(info->dev, "set_charging_fsm:vbatt:%d(mV)\n", vbatt); |
| |
| switch (info->state) { |
| case FSM_INIT: |
| if (info->online && info->present && info->allowed) { |
| if (vbatt < PRECHARGE_THRESHOLD) { |
| info->state = FSM_PRECHARGE; |
| start_precharge(info); |
| } else if (vbatt > DISCHARGE_THRESHOLD) { |
| info->state = FSM_DISCHARGE; |
| stop_charge(info, vbatt); |
| } else if (vbatt < DISCHARGE_THRESHOLD) { |
| info->state = FSM_FASTCHARGE; |
| start_fastcharge(info); |
| } |
| } else { |
| if (vbatt < POWEROFF_THRESHOLD) { |
| power_off_notification(info); |
| } else { |
| info->state = FSM_DISCHARGE; |
| stop_charge(info, vbatt); |
| } |
| } |
| break; |
| case FSM_PRECHARGE: |
| if (info->online && info->present && info->allowed) { |
| if (vbatt > PRECHARGE_THRESHOLD) { |
| info->state = FSM_FASTCHARGE; |
| start_fastcharge(info); |
| } |
| } else { |
| info->state = FSM_DISCHARGE; |
| stop_charge(info, vbatt); |
| } |
| break; |
| case FSM_FASTCHARGE: |
| if (info->online && info->present && info->allowed) { |
| if (vbatt < PRECHARGE_THRESHOLD) { |
| info->state = FSM_PRECHARGE; |
| start_precharge(info); |
| } |
| } else { |
| info->state = FSM_DISCHARGE; |
| stop_charge(info, vbatt); |
| } |
| break; |
| case FSM_DISCHARGE: |
| if (info->online && info->present && info->allowed) { |
| if (vbatt < PRECHARGE_THRESHOLD) { |
| info->state = FSM_PRECHARGE; |
| start_precharge(info); |
| } else if (vbatt < DISCHARGE_THRESHOLD) { |
| info->state = FSM_FASTCHARGE; |
| start_fastcharge(info); |
| } |
| } else { |
| if (vbatt < POWEROFF_THRESHOLD) |
| power_off_notification(info); |
| else if (vbatt > CHARGE_THRESHOLD && info->online) |
| set_vbatt_threshold(info, CHARGE_THRESHOLD, 0); |
| } |
| break; |
| default: |
| dev_warn(info->dev, "FSM meets wrong state:%d\n", |
| info->state); |
| break; |
| } |
| dev_dbg(info->dev, |
| "Out FSM:%s, Charger:%s, Battery:%s, Allowed:%d\n", |
| &fsm_state[info->state][0], |
| (info->online) ? "online" : "N/A", |
| (info->present) ? "present" : "N/A", info->allowed); |
| mutex_unlock(&info->lock); |
| |
| return 0; |
| } |
| |
| static irqreturn_t pm860x_charger_handler(int irq, void *data) |
| { |
| struct pm860x_charger_info *info = data; |
| int ret; |
| |
| mutex_lock(&info->lock); |
| ret = pm860x_reg_read(info->i2c, PM8607_STATUS_2); |
| if (ret < 0) { |
| mutex_unlock(&info->lock); |
| goto out; |
| } |
| if (ret & STATUS2_CHG) { |
| info->online = 1; |
| info->allowed = 1; |
| } else { |
| info->online = 0; |
| info->allowed = 0; |
| } |
| mutex_unlock(&info->lock); |
| dev_dbg(info->dev, "%s, Charger:%s, Allowed:%d\n", __func__, |
| (info->online) ? "online" : "N/A", info->allowed); |
| |
| set_charging_fsm(info); |
| |
| power_supply_changed(&info->usb); |
| out: |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t pm860x_temp_handler(int irq, void *data) |
| { |
| struct power_supply *psy; |
| struct pm860x_charger_info *info = data; |
| union power_supply_propval temp; |
| int value; |
| int ret; |
| |
| psy = power_supply_get_by_name(pm860x_supplied_to[0]); |
| if (!psy) |
| goto out; |
| ret = psy->get_property(psy, POWER_SUPPLY_PROP_TEMP, &temp); |
| if (ret) |
| goto out; |
| value = temp.intval / 10; |
| |
| mutex_lock(&info->lock); |
| /* Temperature < -10 C or >40 C, Will not allow charge */ |
| if (value < -10 || value > 40) |
| info->allowed = 0; |
| else |
| info->allowed = 1; |
| dev_dbg(info->dev, "%s, Allowed: %d\n", __func__, info->allowed); |
| mutex_unlock(&info->lock); |
| |
| set_charging_fsm(info); |
| out: |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t pm860x_exception_handler(int irq, void *data) |
| { |
| struct pm860x_charger_info *info = data; |
| |
| mutex_lock(&info->lock); |
| info->allowed = 0; |
| mutex_unlock(&info->lock); |
| dev_dbg(info->dev, "%s, irq: %d\n", __func__, irq); |
| |
| set_charging_fsm(info); |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t pm860x_done_handler(int irq, void *data) |
| { |
| struct pm860x_charger_info *info = data; |
| struct power_supply *psy; |
| union power_supply_propval val; |
| int ret; |
| int vbatt; |
| |
| mutex_lock(&info->lock); |
| /* pre-charge done, will transimit to fast-charge stage */ |
| if (info->state == FSM_PRECHARGE) { |
| info->allowed = 1; |
| goto out; |
| } |
| /* |
| * Fast charge done, delay to read |
| * the correct status of CHG_DET. |
| */ |
| mdelay(5); |
| info->allowed = 0; |
| psy = power_supply_get_by_name(pm860x_supplied_to[0]); |
| if (!psy) |
| goto out; |
| ret = psy->get_property(psy, POWER_SUPPLY_PROP_VOLTAGE_NOW, &val); |
| if (ret) |
| goto out; |
| vbatt = val.intval / 1000; |
| /* |
| * CHG_DONE interrupt is faster than CHG_DET interrupt when |
| * plug in/out usb, So we can not rely on info->online, we |
| * need check pm8607 status register to check usb is online |
| * or not, then we can decide it is real charge done |
| * automatically or it is triggered by usb plug out; |
| */ |
| ret = pm860x_reg_read(info->i2c, PM8607_STATUS_2); |
| if (ret < 0) |
| goto out; |
| if (vbatt > CHARGE_THRESHOLD && ret & STATUS2_CHG) |
| psy->set_property(psy, POWER_SUPPLY_PROP_CHARGE_FULL, &val); |
| |
| out: |
| mutex_unlock(&info->lock); |
| dev_dbg(info->dev, "%s, Allowed: %d\n", __func__, info->allowed); |
| set_charging_fsm(info); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t pm860x_vbattery_handler(int irq, void *data) |
| { |
| struct pm860x_charger_info *info = data; |
| |
| mutex_lock(&info->lock); |
| |
| set_vbatt_threshold(info, 0, 0); |
| |
| if (info->present && info->online) |
| info->allowed = 1; |
| else |
| info->allowed = 0; |
| mutex_unlock(&info->lock); |
| dev_dbg(info->dev, "%s, Allowed: %d\n", __func__, info->allowed); |
| |
| set_charging_fsm(info); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t pm860x_vchg_handler(int irq, void *data) |
| { |
| struct pm860x_charger_info *info = data; |
| int vchg = 0; |
| |
| if (info->present) |
| goto out; |
| |
| measure_vchg(info, &vchg); |
| |
| mutex_lock(&info->lock); |
| if (!info->online) { |
| int status; |
| /* check if over-temp on pm8606 or not */ |
| status = pm860x_reg_read(info->i2c_8606, PM8606_FLAGS); |
| if (status & OVER_TEMP_FLAG) { |
| /* clear over temp flag and set auto recover */ |
| pm860x_set_bits(info->i2c_8606, PM8606_FLAGS, |
| OVER_TEMP_FLAG, OVER_TEMP_FLAG); |
| pm860x_set_bits(info->i2c_8606, |
| PM8606_VSYS, |
| OVTEMP_AUTORECOVER, |
| OVTEMP_AUTORECOVER); |
| dev_dbg(info->dev, |
| "%s, pm8606 over-temp occure\n", __func__); |
| } |
| } |
| |
| if (vchg > VCHG_NORMAL_CHECK) { |
| set_vchg_threshold(info, VCHG_OVP_LOW, 0); |
| info->allowed = 0; |
| dev_dbg(info->dev, |
| "%s,pm8607 over-vchg occure,vchg = %dmv\n", |
| __func__, vchg); |
| } else if (vchg < VCHG_OVP_LOW) { |
| set_vchg_threshold(info, VCHG_NORMAL_LOW, |
| VCHG_NORMAL_HIGH); |
| info->allowed = 1; |
| dev_dbg(info->dev, |
| "%s,pm8607 over-vchg recover,vchg = %dmv\n", |
| __func__, vchg); |
| } |
| mutex_unlock(&info->lock); |
| |
| dev_dbg(info->dev, "%s, Allowed: %d\n", __func__, info->allowed); |
| set_charging_fsm(info); |
| out: |
| return IRQ_HANDLED; |
| } |
| |
| static int pm860x_usb_get_prop(struct power_supply *psy, |
| enum power_supply_property psp, |
| union power_supply_propval *val) |
| { |
| struct pm860x_charger_info *info = |
| dev_get_drvdata(psy->dev->parent); |
| |
| switch (psp) { |
| case POWER_SUPPLY_PROP_STATUS: |
| if (info->state == FSM_FASTCHARGE || |
| info->state == FSM_PRECHARGE) |
| val->intval = POWER_SUPPLY_STATUS_CHARGING; |
| else |
| val->intval = POWER_SUPPLY_STATUS_DISCHARGING; |
| break; |
| case POWER_SUPPLY_PROP_ONLINE: |
| val->intval = info->online; |
| break; |
| default: |
| return -ENODEV; |
| } |
| return 0; |
| } |
| |
| static enum power_supply_property pm860x_usb_props[] = { |
| POWER_SUPPLY_PROP_STATUS, |
| POWER_SUPPLY_PROP_ONLINE, |
| }; |
| |
| static int pm860x_init_charger(struct pm860x_charger_info *info) |
| { |
| int ret; |
| |
| ret = pm860x_reg_read(info->i2c, PM8607_STATUS_2); |
| if (ret < 0) |
| return ret; |
| |
| mutex_lock(&info->lock); |
| info->state = FSM_INIT; |
| if (ret & STATUS2_CHG) { |
| info->online = 1; |
| info->allowed = 1; |
| } else { |
| info->online = 0; |
| info->allowed = 0; |
| } |
| mutex_unlock(&info->lock); |
| |
| set_charging_fsm(info); |
| return 0; |
| } |
| |
| static struct pm860x_irq_desc { |
| const char *name; |
| irqreturn_t (*handler)(int irq, void *data); |
| } pm860x_irq_descs[] = { |
| { "usb supply detect", pm860x_charger_handler }, |
| { "charge done", pm860x_done_handler }, |
| { "charge timeout", pm860x_exception_handler }, |
| { "charge fault", pm860x_exception_handler }, |
| { "temperature", pm860x_temp_handler }, |
| { "vbatt", pm860x_vbattery_handler }, |
| { "vchg", pm860x_vchg_handler }, |
| }; |
| |
| static int pm860x_charger_probe(struct platform_device *pdev) |
| { |
| struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent); |
| struct pm860x_charger_info *info; |
| int ret; |
| int count; |
| int i; |
| int j; |
| |
| info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); |
| if (!info) |
| return -ENOMEM; |
| |
| count = pdev->num_resources; |
| for (i = 0, j = 0; i < count; i++) { |
| info->irq[j] = platform_get_irq(pdev, i); |
| if (info->irq[j] < 0) |
| continue; |
| j++; |
| } |
| info->irq_nums = j; |
| |
| info->chip = chip; |
| info->i2c = |
| (chip->id == CHIP_PM8607) ? chip->client : chip->companion; |
| info->i2c_8606 = |
| (chip->id == CHIP_PM8607) ? chip->companion : chip->client; |
| if (!info->i2c_8606) { |
| dev_err(&pdev->dev, "Missed I2C address of 88PM8606!\n"); |
| ret = -EINVAL; |
| goto out; |
| } |
| info->dev = &pdev->dev; |
| |
| /* set init value for the case we are not using battery */ |
| set_vchg_threshold(info, VCHG_NORMAL_LOW, VCHG_OVP_LOW); |
| |
| mutex_init(&info->lock); |
| platform_set_drvdata(pdev, info); |
| |
| info->usb.name = "usb"; |
| info->usb.type = POWER_SUPPLY_TYPE_USB; |
| info->usb.supplied_to = pm860x_supplied_to; |
| info->usb.num_supplicants = ARRAY_SIZE(pm860x_supplied_to); |
| info->usb.properties = pm860x_usb_props; |
| info->usb.num_properties = ARRAY_SIZE(pm860x_usb_props); |
| info->usb.get_property = pm860x_usb_get_prop; |
| ret = power_supply_register(&pdev->dev, &info->usb); |
| if (ret) |
| goto out; |
| |
| pm860x_init_charger(info); |
| |
| for (i = 0; i < ARRAY_SIZE(info->irq); i++) { |
| ret = request_threaded_irq(info->irq[i], NULL, |
| pm860x_irq_descs[i].handler, |
| IRQF_ONESHOT, pm860x_irq_descs[i].name, info); |
| if (ret < 0) { |
| dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n", |
| info->irq[i], ret); |
| goto out_irq; |
| } |
| } |
| return 0; |
| |
| out_irq: |
| power_supply_unregister(&info->usb); |
| while (--i >= 0) |
| free_irq(info->irq[i], info); |
| out: |
| return ret; |
| } |
| |
| static int pm860x_charger_remove(struct platform_device *pdev) |
| { |
| struct pm860x_charger_info *info = platform_get_drvdata(pdev); |
| int i; |
| |
| platform_set_drvdata(pdev, NULL); |
| power_supply_unregister(&info->usb); |
| free_irq(info->irq[0], info); |
| for (i = 0; i < info->irq_nums; i++) |
| free_irq(info->irq[i], info); |
| return 0; |
| } |
| |
| static struct platform_driver pm860x_charger_driver = { |
| .driver = { |
| .name = "88pm860x-charger", |
| .owner = THIS_MODULE, |
| }, |
| .probe = pm860x_charger_probe, |
| .remove = pm860x_charger_remove, |
| }; |
| module_platform_driver(pm860x_charger_driver); |
| |
| MODULE_DESCRIPTION("Marvell 88PM860x Charger driver"); |
| MODULE_LICENSE("GPL"); |