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757 lines
19 KiB
757 lines
19 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Battery driver for Marvell 88PM860x PMIC |
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* |
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* Copyright (c) 2012 Marvell International Ltd. |
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* Author: Jett Zhou <[email protected]> |
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* Haojian Zhuang <[email protected]> |
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*/ |
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|
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/platform_device.h> |
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#include <linux/slab.h> |
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#include <linux/power_supply.h> |
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#include <linux/mfd/88pm860x.h> |
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#include <linux/delay.h> |
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#include <linux/uaccess.h> |
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#include <asm/div64.h> |
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/* bit definitions of Status Query Interface 2 */ |
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#define STATUS2_CHG (1 << 2) |
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|
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/* bit definitions of Reset Out Register */ |
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#define RESET_SW_PD (1 << 7) |
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|
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/* bit definitions of PreReg 1 */ |
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#define PREREG1_90MA (0x0) |
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#define PREREG1_180MA (0x1) |
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#define PREREG1_450MA (0x4) |
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#define PREREG1_540MA (0x5) |
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#define PREREG1_1350MA (0xE) |
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#define PREREG1_VSYS_4_5V (3 << 4) |
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|
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/* bit definitions of Charger Control 1 Register */ |
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#define CC1_MODE_OFF (0) |
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#define CC1_MODE_PRECHARGE (1) |
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#define CC1_MODE_FASTCHARGE (2) |
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#define CC1_MODE_PULSECHARGE (3) |
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#define CC1_ITERM_20MA (0 << 2) |
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#define CC1_ITERM_60MA (2 << 2) |
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#define CC1_VFCHG_4_2V (9 << 4) |
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/* bit definitions of Charger Control 2 Register */ |
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#define CC2_ICHG_100MA (0x1) |
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#define CC2_ICHG_500MA (0x9) |
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#define CC2_ICHG_1000MA (0x13) |
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|
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/* bit definitions of Charger Control 3 Register */ |
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#define CC3_180MIN_TIMEOUT (0x6 << 4) |
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#define CC3_270MIN_TIMEOUT (0x7 << 4) |
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#define CC3_360MIN_TIMEOUT (0xA << 4) |
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#define CC3_DISABLE_TIMEOUT (0xF << 4) |
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|
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/* bit definitions of Charger Control 4 Register */ |
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#define CC4_IPRE_40MA (7) |
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#define CC4_VPCHG_3_2V (3 << 4) |
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#define CC4_IFCHG_MON_EN (1 << 6) |
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#define CC4_BTEMP_MON_EN (1 << 7) |
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/* bit definitions of Charger Control 6 Register */ |
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#define CC6_BAT_OV_EN (1 << 2) |
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#define CC6_BAT_UV_EN (1 << 3) |
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#define CC6_UV_VBAT_SET (0x3 << 6) /* 2.8v */ |
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|
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/* bit definitions of Charger Control 7 Register */ |
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#define CC7_BAT_REM_EN (1 << 3) |
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#define CC7_IFSM_EN (1 << 7) |
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|
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/* bit definitions of Measurement Enable 1 Register */ |
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#define MEAS1_VBAT (1 << 0) |
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/* bit definitions of Measurement Enable 3 Register */ |
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#define MEAS3_IBAT_EN (1 << 0) |
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#define MEAS3_CC_EN (1 << 2) |
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#define FSM_INIT 0 |
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#define FSM_DISCHARGE 1 |
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#define FSM_PRECHARGE 2 |
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#define FSM_FASTCHARGE 3 |
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#define PRECHARGE_THRESHOLD 3100 |
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#define POWEROFF_THRESHOLD 3400 |
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#define CHARGE_THRESHOLD 4000 |
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#define DISCHARGE_THRESHOLD 4180 |
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|
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/* over-temperature on PM8606 setting */ |
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#define OVER_TEMP_FLAG (1 << 6) |
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#define OVTEMP_AUTORECOVER (1 << 3) |
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/* over-voltage protect on vchg setting mv */ |
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#define VCHG_NORMAL_LOW 4200 |
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#define VCHG_NORMAL_CHECK 5800 |
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#define VCHG_NORMAL_HIGH 6000 |
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#define VCHG_OVP_LOW 5500 |
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struct pm860x_charger_info { |
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struct pm860x_chip *chip; |
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struct i2c_client *i2c; |
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struct i2c_client *i2c_8606; |
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struct device *dev; |
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struct power_supply *usb; |
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struct mutex lock; |
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int irq_nums; |
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int irq[7]; |
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unsigned state:3; /* fsm state */ |
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unsigned online:1; /* usb charger */ |
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unsigned present:1; /* battery present */ |
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unsigned allowed:1; |
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}; |
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static char *pm860x_supplied_to[] = { |
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"battery-monitor", |
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}; |
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static int measure_vchg(struct pm860x_charger_info *info, int *data) |
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{ |
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unsigned char buf[2]; |
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int ret = 0; |
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ret = pm860x_bulk_read(info->i2c, PM8607_VCHG_MEAS1, 2, buf); |
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if (ret < 0) |
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return ret; |
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*data = ((buf[0] & 0xff) << 4) | (buf[1] & 0x0f); |
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/* V_BATT_MEAS(mV) = value * 5 * 1.8 * 1000 / (2^12) */ |
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*data = ((*data & 0xfff) * 9 * 125) >> 9; |
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dev_dbg(info->dev, "%s, vchg: %d mv\n", __func__, *data); |
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return ret; |
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} |
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static void set_vchg_threshold(struct pm860x_charger_info *info, |
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int min, int max) |
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{ |
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int data; |
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/* (tmp << 8) * / 5 / 1800 */ |
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if (min <= 0) |
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data = 0; |
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else |
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data = (min << 5) / 1125; |
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pm860x_reg_write(info->i2c, PM8607_VCHG_LOWTH, data); |
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dev_dbg(info->dev, "VCHG_LOWTH:%dmv, 0x%x\n", min, data); |
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if (max <= 0) |
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data = 0xff; |
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else |
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data = (max << 5) / 1125; |
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pm860x_reg_write(info->i2c, PM8607_VCHG_HIGHTH, data); |
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dev_dbg(info->dev, "VCHG_HIGHTH:%dmv, 0x%x\n", max, data); |
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} |
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static void set_vbatt_threshold(struct pm860x_charger_info *info, |
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int min, int max) |
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{ |
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int data; |
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/* (tmp << 8) * 3 / 1800 */ |
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if (min <= 0) |
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data = 0; |
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else |
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data = (min << 5) / 675; |
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pm860x_reg_write(info->i2c, PM8607_VBAT_LOWTH, data); |
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dev_dbg(info->dev, "VBAT Min:%dmv, LOWTH:0x%x\n", min, data); |
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if (max <= 0) |
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data = 0xff; |
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else |
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data = (max << 5) / 675; |
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pm860x_reg_write(info->i2c, PM8607_VBAT_HIGHTH, data); |
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dev_dbg(info->dev, "VBAT Max:%dmv, HIGHTH:0x%x\n", max, data); |
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return; |
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} |
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static int start_precharge(struct pm860x_charger_info *info) |
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{ |
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int ret; |
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dev_dbg(info->dev, "Start Pre-charging!\n"); |
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set_vbatt_threshold(info, 0, 0); |
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ret = pm860x_reg_write(info->i2c_8606, PM8606_PREREGULATORA, |
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PREREG1_1350MA | PREREG1_VSYS_4_5V); |
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if (ret < 0) |
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goto out; |
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/* stop charging */ |
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ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3, |
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CC1_MODE_OFF); |
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if (ret < 0) |
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goto out; |
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/* set 270 minutes timeout */ |
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ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL3, (0xf << 4), |
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CC3_270MIN_TIMEOUT); |
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if (ret < 0) |
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goto out; |
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/* set precharge current, termination voltage, IBAT & TBAT monitor */ |
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ret = pm860x_reg_write(info->i2c, PM8607_CHG_CTRL4, |
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CC4_IPRE_40MA | CC4_VPCHG_3_2V | |
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CC4_IFCHG_MON_EN | CC4_BTEMP_MON_EN); |
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if (ret < 0) |
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goto out; |
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ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL7, |
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CC7_BAT_REM_EN | CC7_IFSM_EN, |
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CC7_BAT_REM_EN | CC7_IFSM_EN); |
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if (ret < 0) |
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goto out; |
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/* trigger precharge */ |
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ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3, |
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CC1_MODE_PRECHARGE); |
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out: |
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return ret; |
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} |
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static int start_fastcharge(struct pm860x_charger_info *info) |
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{ |
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int ret; |
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dev_dbg(info->dev, "Start Fast-charging!\n"); |
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/* set fastcharge termination current & voltage, disable charging */ |
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ret = pm860x_reg_write(info->i2c, PM8607_CHG_CTRL1, |
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CC1_MODE_OFF | CC1_ITERM_60MA | |
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CC1_VFCHG_4_2V); |
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if (ret < 0) |
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goto out; |
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ret = pm860x_reg_write(info->i2c_8606, PM8606_PREREGULATORA, |
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PREREG1_540MA | PREREG1_VSYS_4_5V); |
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if (ret < 0) |
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goto out; |
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ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL2, 0x1f, |
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CC2_ICHG_500MA); |
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if (ret < 0) |
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goto out; |
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/* set 270 minutes timeout */ |
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ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL3, (0xf << 4), |
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CC3_270MIN_TIMEOUT); |
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if (ret < 0) |
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goto out; |
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/* set IBAT & TBAT monitor */ |
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ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL4, |
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CC4_IFCHG_MON_EN | CC4_BTEMP_MON_EN, |
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CC4_IFCHG_MON_EN | CC4_BTEMP_MON_EN); |
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if (ret < 0) |
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goto out; |
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ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL6, |
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CC6_BAT_OV_EN | CC6_BAT_UV_EN | |
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CC6_UV_VBAT_SET, |
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CC6_BAT_OV_EN | CC6_BAT_UV_EN | |
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CC6_UV_VBAT_SET); |
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if (ret < 0) |
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goto out; |
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ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL7, |
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CC7_BAT_REM_EN | CC7_IFSM_EN, |
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CC7_BAT_REM_EN | CC7_IFSM_EN); |
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if (ret < 0) |
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goto out; |
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/* launch fast-charge */ |
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ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3, |
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CC1_MODE_FASTCHARGE); |
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/* vchg threshold setting */ |
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set_vchg_threshold(info, VCHG_NORMAL_LOW, VCHG_NORMAL_HIGH); |
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out: |
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return ret; |
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} |
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static void stop_charge(struct pm860x_charger_info *info, int vbatt) |
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{ |
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dev_dbg(info->dev, "Stop charging!\n"); |
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pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3, CC1_MODE_OFF); |
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if (vbatt > CHARGE_THRESHOLD && info->online) |
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set_vbatt_threshold(info, CHARGE_THRESHOLD, 0); |
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} |
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static void power_off_notification(struct pm860x_charger_info *info) |
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{ |
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dev_dbg(info->dev, "Power-off notification!\n"); |
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} |
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static int set_charging_fsm(struct pm860x_charger_info *info) |
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{ |
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struct power_supply *psy; |
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union power_supply_propval data; |
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unsigned char fsm_state[][16] = { "init", "discharge", "precharge", |
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"fastcharge", |
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}; |
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int ret; |
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int vbatt; |
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psy = power_supply_get_by_name(pm860x_supplied_to[0]); |
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if (!psy) |
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return -EINVAL; |
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ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_VOLTAGE_NOW, |
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&data); |
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if (ret) { |
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power_supply_put(psy); |
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return ret; |
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} |
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vbatt = data.intval / 1000; |
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ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_PRESENT, &data); |
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if (ret) { |
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power_supply_put(psy); |
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return ret; |
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} |
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power_supply_put(psy); |
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mutex_lock(&info->lock); |
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info->present = data.intval; |
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dev_dbg(info->dev, "Entering FSM:%s, Charger:%s, Battery:%s, " |
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"Allowed:%d\n", |
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&fsm_state[info->state][0], |
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(info->online) ? "online" : "N/A", |
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(info->present) ? "present" : "N/A", info->allowed); |
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dev_dbg(info->dev, "set_charging_fsm:vbatt:%d(mV)\n", vbatt); |
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switch (info->state) { |
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case FSM_INIT: |
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if (info->online && info->present && info->allowed) { |
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if (vbatt < PRECHARGE_THRESHOLD) { |
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info->state = FSM_PRECHARGE; |
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start_precharge(info); |
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} else if (vbatt > DISCHARGE_THRESHOLD) { |
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info->state = FSM_DISCHARGE; |
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stop_charge(info, vbatt); |
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} else if (vbatt < DISCHARGE_THRESHOLD) { |
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info->state = FSM_FASTCHARGE; |
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start_fastcharge(info); |
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} |
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} else { |
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if (vbatt < POWEROFF_THRESHOLD) { |
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power_off_notification(info); |
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} else { |
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info->state = FSM_DISCHARGE; |
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stop_charge(info, vbatt); |
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} |
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} |
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break; |
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case FSM_PRECHARGE: |
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if (info->online && info->present && info->allowed) { |
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if (vbatt > PRECHARGE_THRESHOLD) { |
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info->state = FSM_FASTCHARGE; |
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start_fastcharge(info); |
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} |
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} else { |
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info->state = FSM_DISCHARGE; |
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stop_charge(info, vbatt); |
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} |
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break; |
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case FSM_FASTCHARGE: |
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if (info->online && info->present && info->allowed) { |
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if (vbatt < PRECHARGE_THRESHOLD) { |
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info->state = FSM_PRECHARGE; |
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start_precharge(info); |
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} |
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} else { |
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info->state = FSM_DISCHARGE; |
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stop_charge(info, vbatt); |
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} |
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break; |
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case FSM_DISCHARGE: |
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if (info->online && info->present && info->allowed) { |
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if (vbatt < PRECHARGE_THRESHOLD) { |
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info->state = FSM_PRECHARGE; |
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start_precharge(info); |
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} else if (vbatt < DISCHARGE_THRESHOLD) { |
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info->state = FSM_FASTCHARGE; |
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start_fastcharge(info); |
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} |
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} else { |
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if (vbatt < POWEROFF_THRESHOLD) |
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power_off_notification(info); |
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else if (vbatt > CHARGE_THRESHOLD && info->online) |
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set_vbatt_threshold(info, CHARGE_THRESHOLD, 0); |
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} |
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break; |
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default: |
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dev_warn(info->dev, "FSM meets wrong state:%d\n", |
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info->state); |
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break; |
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} |
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dev_dbg(info->dev, |
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"Out FSM:%s, Charger:%s, Battery:%s, Allowed:%d\n", |
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&fsm_state[info->state][0], |
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(info->online) ? "online" : "N/A", |
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(info->present) ? "present" : "N/A", info->allowed); |
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mutex_unlock(&info->lock); |
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return 0; |
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} |
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static irqreturn_t pm860x_charger_handler(int irq, void *data) |
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{ |
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struct pm860x_charger_info *info = data; |
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int ret; |
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mutex_lock(&info->lock); |
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ret = pm860x_reg_read(info->i2c, PM8607_STATUS_2); |
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if (ret < 0) { |
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mutex_unlock(&info->lock); |
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goto out; |
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} |
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if (ret & STATUS2_CHG) { |
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info->online = 1; |
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info->allowed = 1; |
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} else { |
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info->online = 0; |
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info->allowed = 0; |
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} |
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mutex_unlock(&info->lock); |
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dev_dbg(info->dev, "%s, Charger:%s, Allowed:%d\n", __func__, |
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(info->online) ? "online" : "N/A", info->allowed); |
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|
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set_charging_fsm(info); |
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|
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power_supply_changed(info->usb); |
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out: |
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return IRQ_HANDLED; |
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} |
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static irqreturn_t pm860x_temp_handler(int irq, void *data) |
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{ |
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struct power_supply *psy; |
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struct pm860x_charger_info *info = data; |
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union power_supply_propval temp; |
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int value; |
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int ret; |
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psy = power_supply_get_by_name(pm860x_supplied_to[0]); |
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if (!psy) |
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return IRQ_HANDLED; |
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ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_TEMP, &temp); |
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if (ret) |
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goto out; |
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value = temp.intval / 10; |
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|
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mutex_lock(&info->lock); |
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/* Temperature < -10 C or >40 C, Will not allow charge */ |
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if (value < -10 || value > 40) |
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info->allowed = 0; |
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else |
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info->allowed = 1; |
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dev_dbg(info->dev, "%s, Allowed: %d\n", __func__, info->allowed); |
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mutex_unlock(&info->lock); |
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|
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set_charging_fsm(info); |
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out: |
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power_supply_put(psy); |
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return IRQ_HANDLED; |
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} |
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|
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static irqreturn_t pm860x_exception_handler(int irq, void *data) |
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{ |
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struct pm860x_charger_info *info = data; |
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|
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mutex_lock(&info->lock); |
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info->allowed = 0; |
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mutex_unlock(&info->lock); |
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dev_dbg(info->dev, "%s, irq: %d\n", __func__, irq); |
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set_charging_fsm(info); |
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return IRQ_HANDLED; |
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} |
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|
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static irqreturn_t pm860x_done_handler(int irq, void *data) |
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{ |
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struct pm860x_charger_info *info = data; |
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struct power_supply *psy; |
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union power_supply_propval val; |
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int ret; |
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int vbatt; |
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|
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mutex_lock(&info->lock); |
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/* pre-charge done, will transimit to fast-charge stage */ |
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if (info->state == FSM_PRECHARGE) { |
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info->allowed = 1; |
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goto out; |
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} |
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/* |
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* Fast charge done, delay to read |
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* the correct status of CHG_DET. |
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*/ |
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mdelay(5); |
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info->allowed = 0; |
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psy = power_supply_get_by_name(pm860x_supplied_to[0]); |
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if (!psy) |
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goto out; |
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ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_VOLTAGE_NOW, |
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&val); |
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if (ret) |
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goto out_psy_put; |
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vbatt = val.intval / 1000; |
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/* |
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* CHG_DONE interrupt is faster than CHG_DET interrupt when |
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* plug in/out usb, So we can not rely on info->online, we |
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* need check pm8607 status register to check usb is online |
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* or not, then we can decide it is real charge done |
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* automatically or it is triggered by usb plug out; |
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*/ |
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ret = pm860x_reg_read(info->i2c, PM8607_STATUS_2); |
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if (ret < 0) |
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goto out_psy_put; |
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if (vbatt > CHARGE_THRESHOLD && ret & STATUS2_CHG) |
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power_supply_set_property(psy, POWER_SUPPLY_PROP_CHARGE_FULL, |
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&val); |
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|
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out_psy_put: |
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power_supply_put(psy); |
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out: |
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mutex_unlock(&info->lock); |
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dev_dbg(info->dev, "%s, Allowed: %d\n", __func__, info->allowed); |
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set_charging_fsm(info); |
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|
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return IRQ_HANDLED; |
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} |
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|
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static irqreturn_t pm860x_vbattery_handler(int irq, void *data) |
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{ |
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struct pm860x_charger_info *info = data; |
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|
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mutex_lock(&info->lock); |
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|
|
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 occurred\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 occurred,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 = power_supply_get_drvdata(psy); |
|
|
|
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 const struct power_supply_desc pm860x_charger_desc = { |
|
.name = "usb", |
|
.type = POWER_SUPPLY_TYPE_USB, |
|
.properties = pm860x_usb_props, |
|
.num_properties = ARRAY_SIZE(pm860x_usb_props), |
|
.get_property = pm860x_usb_get_prop, |
|
}; |
|
|
|
static int pm860x_charger_probe(struct platform_device *pdev) |
|
{ |
|
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent); |
|
struct power_supply_config psy_cfg = {}; |
|
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); |
|
|
|
psy_cfg.drv_data = info; |
|
psy_cfg.supplied_to = pm860x_supplied_to; |
|
psy_cfg.num_supplicants = ARRAY_SIZE(pm860x_supplied_to); |
|
info->usb = power_supply_register(&pdev->dev, &pm860x_charger_desc, |
|
&psy_cfg); |
|
if (IS_ERR(info->usb)) { |
|
ret = PTR_ERR(info->usb); |
|
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; |
|
|
|
power_supply_unregister(info->usb); |
|
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", |
|
}, |
|
.probe = pm860x_charger_probe, |
|
.remove = pm860x_charger_remove, |
|
}; |
|
module_platform_driver(pm860x_charger_driver); |
|
|
|
MODULE_DESCRIPTION("Marvell 88PM860x Charger driver"); |
|
MODULE_LICENSE("GPL");
|
|
|