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Release 4.11 drivers/power/supply/bq2415x_charger.c

/*
 * bq2415x charger driver
 *
 * Copyright (C) 2011-2013  Pali Rohár <pali.rohar@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * Datasheets:
 * http://www.ti.com/product/bq24150
 * http://www.ti.com/product/bq24150a
 * http://www.ti.com/product/bq24152
 * http://www.ti.com/product/bq24153
 * http://www.ti.com/product/bq24153a
 * http://www.ti.com/product/bq24155
 * http://www.ti.com/product/bq24157s
 * http://www.ti.com/product/bq24158
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/param.h>
#include <linux/err.h>
#include <linux/workqueue.h>
#include <linux/sysfs.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/idr.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/acpi.h>

#include <linux/power/bq2415x_charger.h>

/* timeout for resetting chip timer */

#define BQ2415X_TIMER_TIMEOUT		10


#define BQ2415X_REG_STATUS		0x00

#define BQ2415X_REG_CONTROL		0x01

#define BQ2415X_REG_VOLTAGE		0x02

#define BQ2415X_REG_VENDER		0x03

#define BQ2415X_REG_CURRENT		0x04

/* reset state for all registers */

#define BQ2415X_RESET_STATUS		BIT(6)

#define BQ2415X_RESET_CONTROL		(BIT(4)|BIT(5))

#define BQ2415X_RESET_VOLTAGE		(BIT(1)|BIT(3))

#define BQ2415X_RESET_CURRENT		(BIT(0)|BIT(3)|BIT(7))

/* status register */

#define BQ2415X_BIT_TMR_RST		7

#define BQ2415X_BIT_OTG			7

#define BQ2415X_BIT_EN_STAT		6

#define BQ2415X_MASK_STAT		(BIT(4)|BIT(5))

#define BQ2415X_SHIFT_STAT		4

#define BQ2415X_BIT_BOOST		3

#define BQ2415X_MASK_FAULT		(BIT(0)|BIT(1)|BIT(2))

#define BQ2415X_SHIFT_FAULT		0

/* control register */

#define BQ2415X_MASK_LIMIT		(BIT(6)|BIT(7))

#define BQ2415X_SHIFT_LIMIT		6

#define BQ2415X_MASK_VLOWV		(BIT(4)|BIT(5))

#define BQ2415X_SHIFT_VLOWV		4

#define BQ2415X_BIT_TE			3

#define BQ2415X_BIT_CE			2

#define BQ2415X_BIT_HZ_MODE		1

#define BQ2415X_BIT_OPA_MODE		0

/* voltage register */

#define BQ2415X_MASK_VO		(BIT(2)|BIT(3)|BIT(4)|BIT(5)|BIT(6)|BIT(7))

#define BQ2415X_SHIFT_VO		2

#define BQ2415X_BIT_OTG_PL		1

#define BQ2415X_BIT_OTG_EN		0

/* vender register */

#define BQ2415X_MASK_VENDER		(BIT(5)|BIT(6)|BIT(7))

#define BQ2415X_SHIFT_VENDER		5

#define BQ2415X_MASK_PN			(BIT(3)|BIT(4))

#define BQ2415X_SHIFT_PN		3

#define BQ2415X_MASK_REVISION		(BIT(0)|BIT(1)|BIT(2))

#define BQ2415X_SHIFT_REVISION		0

/* current register */

#define BQ2415X_MASK_RESET		BIT(7)

#define BQ2415X_MASK_VI_CHRG		(BIT(4)|BIT(5)|BIT(6))

#define BQ2415X_SHIFT_VI_CHRG		4
/* N/A                                  BIT(3) */

#define BQ2415X_MASK_VI_TERM		(BIT(0)|BIT(1)|BIT(2))

#define BQ2415X_SHIFT_VI_TERM		0



enum bq2415x_command {
	
BQ2415X_TIMER_RESET,
	
BQ2415X_OTG_STATUS,
	
BQ2415X_STAT_PIN_STATUS,
	
BQ2415X_STAT_PIN_ENABLE,
	
BQ2415X_STAT_PIN_DISABLE,
	
BQ2415X_CHARGE_STATUS,
	
BQ2415X_BOOST_STATUS,
	
BQ2415X_FAULT_STATUS,

	
BQ2415X_CHARGE_TERMINATION_STATUS,
	
BQ2415X_CHARGE_TERMINATION_ENABLE,
	
BQ2415X_CHARGE_TERMINATION_DISABLE,
	
BQ2415X_CHARGER_STATUS,
	
BQ2415X_CHARGER_ENABLE,
	
BQ2415X_CHARGER_DISABLE,
	
BQ2415X_HIGH_IMPEDANCE_STATUS,
	
BQ2415X_HIGH_IMPEDANCE_ENABLE,
	
BQ2415X_HIGH_IMPEDANCE_DISABLE,
	
BQ2415X_BOOST_MODE_STATUS,
	
BQ2415X_BOOST_MODE_ENABLE,
	
BQ2415X_BOOST_MODE_DISABLE,

	
BQ2415X_OTG_LEVEL,
	
BQ2415X_OTG_ACTIVATE_HIGH,
	
BQ2415X_OTG_ACTIVATE_LOW,
	
BQ2415X_OTG_PIN_STATUS,
	
BQ2415X_OTG_PIN_ENABLE,
	
BQ2415X_OTG_PIN_DISABLE,

	
BQ2415X_VENDER_CODE,
	
BQ2415X_PART_NUMBER,
	
BQ2415X_REVISION,
};


enum bq2415x_chip {
	
BQUNKNOWN,
	
BQ24150,
	
BQ24150A,
	
BQ24151,
	
BQ24151A,
	
BQ24152,
	
BQ24153,
	
BQ24153A,
	
BQ24155,
	
BQ24156,
	
BQ24156A,
	
BQ24157S,
	
BQ24158,
};


static char *bq2415x_chip_name[] = {
	"unknown",
	"bq24150",
	"bq24150a",
	"bq24151",
	"bq24151a",
	"bq24152",
	"bq24153",
	"bq24153a",
	"bq24155",
	"bq24156",
	"bq24156a",
	"bq24157s",
	"bq24158",
};


struct bq2415x_device {
	
struct device *dev;
	
struct bq2415x_platform_data init_data;
	
struct power_supply *charger;
	
struct power_supply_desc charger_desc;
	
struct delayed_work work;
	
struct device_node *notify_node;
	
struct notifier_block nb;
	
enum bq2415x_mode reported_mode;/* mode reported by hook function */
	
enum bq2415x_mode mode;		/* currently configured mode */
	
enum bq2415x_chip chip;
	
const char *timer_error;
	
char *model;
	
char *name;
	
int autotimer;	/* 1 - if driver automatically reset timer, 0 - not */
	
int automode;	/* 1 - enabled, 0 - disabled; -1 - not supported */
	
int id;
};

/* each registered chip must have unique id */
static DEFINE_IDR(bq2415x_id);

static DEFINE_MUTEX(bq2415x_id_mutex);
static DEFINE_MUTEX(bq2415x_timer_mutex);
static DEFINE_MUTEX(bq2415x_i2c_mutex);

/**** i2c read functions ****/

/* read value from register */

static int bq2415x_i2c_read(struct bq2415x_device *bq, u8 reg) { struct i2c_client *client = to_i2c_client(bq->dev); struct i2c_msg msg[2]; u8 val; int ret; if (!client->adapter) return -ENODEV; msg[0].addr = client->addr; msg[0].flags = 0; msg[0].buf = &reg; msg[0].len = sizeof(reg); msg[1].addr = client->addr; msg[1].flags = I2C_M_RD; msg[1].buf = &val; msg[1].len = sizeof(val); mutex_lock(&bq2415x_i2c_mutex); ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg)); mutex_unlock(&bq2415x_i2c_mutex); if (ret < 0) return ret; return val; }

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/* read value from register, apply mask and right shift it */
static int bq2415x_i2c_read_mask(struct bq2415x_device *bq, u8 reg, u8 mask, u8 shift) { int ret; if (shift > 8) return -EINVAL; ret = bq2415x_i2c_read(bq, reg); if (ret < 0) return ret; return (ret & mask) >> shift; }

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/* read value from register and return one specified bit */
static int bq2415x_i2c_read_bit(struct bq2415x_device *bq, u8 reg, u8 bit) { if (bit > 8) return -EINVAL; return bq2415x_i2c_read_mask(bq, reg, BIT(bit), bit); }

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/**** i2c write functions ****/ /* write value to register */
static int bq2415x_i2c_write(struct bq2415x_device *bq, u8 reg, u8 val) { struct i2c_client *client = to_i2c_client(bq->dev); struct i2c_msg msg[1]; u8 data[2]; int ret; data[0] = reg; data[1] = val; msg[0].addr = client->addr; msg[0].flags = 0; msg[0].buf = data; msg[0].len = ARRAY_SIZE(data); mutex_lock(&bq2415x_i2c_mutex); ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg)); mutex_unlock(&bq2415x_i2c_mutex); /* i2c_transfer returns number of messages transferred */ if (ret < 0) return ret; else if (ret != 1) return -EIO; return 0; }

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/* read value from register, change it with mask left shifted and write back */
static int bq2415x_i2c_write_mask(struct bq2415x_device *bq, u8 reg, u8 val, u8 mask, u8 shift) { int ret; if (shift > 8) return -EINVAL; ret = bq2415x_i2c_read(bq, reg); if (ret < 0) return ret; ret &= ~mask; ret |= val << shift; return bq2415x_i2c_write(bq, reg, ret); }

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/* change only one bit in register */
static int bq2415x_i2c_write_bit(struct bq2415x_device *bq, u8 reg, bool val, u8 bit) { if (bit > 8) return -EINVAL; return bq2415x_i2c_write_mask(bq, reg, val, BIT(bit), bit); }

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/**** global functions ****/ /* exec command function */
static int bq2415x_exec_command(struct bq2415x_device *bq, enum bq2415x_command command) { int ret; switch (command) { case BQ2415X_TIMER_RESET: return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS, 1, BQ2415X_BIT_TMR_RST); case BQ2415X_OTG_STATUS: return bq2415x_i2c_read_bit(bq, BQ2415X_REG_STATUS, BQ2415X_BIT_OTG); case BQ2415X_STAT_PIN_STATUS: return bq2415x_i2c_read_bit(bq, BQ2415X_REG_STATUS, BQ2415X_BIT_EN_STAT); case BQ2415X_STAT_PIN_ENABLE: return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS, 1, BQ2415X_BIT_EN_STAT); case BQ2415X_STAT_PIN_DISABLE: return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS, 0, BQ2415X_BIT_EN_STAT); case BQ2415X_CHARGE_STATUS: return bq2415x_i2c_read_mask(bq, BQ2415X_REG_STATUS, BQ2415X_MASK_STAT, BQ2415X_SHIFT_STAT); case BQ2415X_BOOST_STATUS: return bq2415x_i2c_read_bit(bq, BQ2415X_REG_STATUS, BQ2415X_BIT_BOOST); case BQ2415X_FAULT_STATUS: return bq2415x_i2c_read_mask(bq, BQ2415X_REG_STATUS, BQ2415X_MASK_FAULT, BQ2415X_SHIFT_FAULT); case BQ2415X_CHARGE_TERMINATION_STATUS: return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL, BQ2415X_BIT_TE); case BQ2415X_CHARGE_TERMINATION_ENABLE: return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 1, BQ2415X_BIT_TE); case BQ2415X_CHARGE_TERMINATION_DISABLE: return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 0, BQ2415X_BIT_TE); case BQ2415X_CHARGER_STATUS: ret = bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL, BQ2415X_BIT_CE); if (ret < 0) return ret; return ret > 0 ? 0 : 1; case BQ2415X_CHARGER_ENABLE: return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 0, BQ2415X_BIT_CE); case BQ2415X_CHARGER_DISABLE: return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 1, BQ2415X_BIT_CE); case BQ2415X_HIGH_IMPEDANCE_STATUS: return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL, BQ2415X_BIT_HZ_MODE); case BQ2415X_HIGH_IMPEDANCE_ENABLE: return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 1, BQ2415X_BIT_HZ_MODE); case BQ2415X_HIGH_IMPEDANCE_DISABLE: return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 0, BQ2415X_BIT_HZ_MODE); case BQ2415X_BOOST_MODE_STATUS: return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL, BQ2415X_BIT_OPA_MODE); case BQ2415X_BOOST_MODE_ENABLE: return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 1, BQ2415X_BIT_OPA_MODE); case BQ2415X_BOOST_MODE_DISABLE: return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 0, BQ2415X_BIT_OPA_MODE); case BQ2415X_OTG_LEVEL: return bq2415x_i2c_read_bit(bq, BQ2415X_REG_VOLTAGE, BQ2415X_BIT_OTG_PL); case BQ2415X_OTG_ACTIVATE_HIGH: return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE, 1, BQ2415X_BIT_OTG_PL); case BQ2415X_OTG_ACTIVATE_LOW: return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE, 0, BQ2415X_BIT_OTG_PL); case BQ2415X_OTG_PIN_STATUS: return bq2415x_i2c_read_bit(bq, BQ2415X_REG_VOLTAGE, BQ2415X_BIT_OTG_EN); case BQ2415X_OTG_PIN_ENABLE: return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE, 1, BQ2415X_BIT_OTG_EN); case BQ2415X_OTG_PIN_DISABLE: return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE, 0, BQ2415X_BIT_OTG_EN); case BQ2415X_VENDER_CODE: return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER, BQ2415X_MASK_VENDER, BQ2415X_SHIFT_VENDER); case BQ2415X_PART_NUMBER: return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER, BQ2415X_MASK_PN, BQ2415X_SHIFT_PN); case BQ2415X_REVISION: return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER, BQ2415X_MASK_REVISION, BQ2415X_SHIFT_REVISION); } return -EINVAL; }

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/* detect chip type */
static enum bq2415x_chip bq2415x_detect_chip(struct bq2415x_device *bq) { struct i2c_client *client = to_i2c_client(bq->dev); int ret = bq2415x_exec_command(bq, BQ2415X_PART_NUMBER); if (ret < 0) return ret; switch (client->addr) { case 0x6b: switch (ret) { case 0: if (bq->chip == BQ24151A) return bq->chip; return BQ24151; case 1: if (bq->chip == BQ24150A || bq->chip == BQ24152 || bq->chip == BQ24155) return bq->chip; return BQ24150; case 2: if (bq->chip == BQ24153A) return bq->chip; return BQ24153; default: return BQUNKNOWN; } break; case 0x6a: switch (ret) { case 0: if (bq->chip == BQ24156A) return bq->chip; return BQ24156; case 2: if (bq->chip == BQ24157S) return bq->chip; return BQ24158; default: return BQUNKNOWN; } break; } return BQUNKNOWN; }

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/* detect chip revision */
static int bq2415x_detect_revision(struct bq2415x_device *bq) { int ret = bq2415x_exec_command(bq, BQ2415X_REVISION); int chip = bq2415x_detect_chip(bq); if (ret < 0 || chip < 0) return -1; switch (chip) { case BQ24150: case BQ24150A: case BQ24151: case BQ24151A: case BQ24152: if (ret >= 0 && ret <= 3) return ret; return -1; case BQ24153: case BQ24153A: case BQ24156: case BQ24156A: case BQ24157S: case BQ24158: if (ret == 3) return 0; else if (ret == 1) return 1; return -1; case BQ24155: if (ret == 3) return 3; return -1; case BQUNKNOWN: return -1; } return -1; }

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/* return chip vender code */
static int bq2415x_get_vender_code(struct bq2415x_device *bq) { int ret; ret = bq2415x_exec_command(bq, BQ2415X_VENDER_CODE); if (ret < 0) return 0; /* convert to binary */ return (ret & 0x1) + ((ret >> 1) & 0x1) * 10 + ((ret >> 2) & 0x1) * 100; }

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/* reset all chip registers to default state */
static void bq2415x_reset_chip(struct bq2415x_device *bq) { bq2415x_i2c_write(bq, BQ2415X_REG_CURRENT, BQ2415X_RESET_CURRENT); bq2415x_i2c_write(bq, BQ2415X_REG_VOLTAGE, BQ2415X_RESET_VOLTAGE); bq2415x_i2c_write(bq, BQ2415X_REG_CONTROL, BQ2415X_RESET_CONTROL); bq2415x_i2c_write(bq, BQ2415X_REG_STATUS, BQ2415X_RESET_STATUS); bq->timer_error = NULL; }

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/**** properties functions ****/ /* set current limit in mA */
static int bq2415x_set_current_limit(struct bq2415x_device *bq, int mA) { int val; if (mA <= 100) val = 0; else if (mA <= 500) val = 1; else if (mA <= 800) val = 2; else val = 3; return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CONTROL, val, BQ2415X_MASK_LIMIT, BQ2415X_SHIFT_LIMIT); }

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/* get current limit in mA */
static int bq2415x_get_current_limit(struct bq2415x_device *bq) { int ret; ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CONTROL, BQ2415X_MASK_LIMIT, BQ2415X_SHIFT_LIMIT); if (ret < 0) return ret; else if (ret == 0) return 100; else if (ret == 1) return 500; else if (ret == 2) return 800; else if (ret == 3) return 1800; return -EINVAL; }

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/* set weak battery voltage in mV */
static int bq2415x_set_weak_battery_voltage(struct bq2415x_device *bq, int mV) { int val; /* round to 100mV */ if (mV <= 3400 + 50) val = 0; else if (mV <= 3500 + 50) val = 1; else if (mV <= 3600 + 50) val = 2; else val = 3; return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CONTROL, val, BQ2415X_MASK_VLOWV, BQ2415X_SHIFT_VLOWV); }

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/* get weak battery voltage in mV */
static int bq2415x_get_weak_battery_voltage(struct bq2415x_device *bq) { int ret; ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CONTROL, BQ2415X_MASK_VLOWV, BQ2415X_SHIFT_VLOWV); if (ret < 0) return ret; return 100 * (34 + ret); }

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/* set battery regulation voltage in mV */
static int bq2415x_set_battery_regulation_voltage(struct bq2415x_device *bq, int mV) { int val = (mV/10 - 350) / 2; /* * According to datasheet, maximum battery regulation voltage is * 4440mV which is b101111 = 47. */ if (val < 0) val = 0; else if (val > 47) return -EINVAL; return bq2415x_i2c_write_mask(bq, BQ2415X_REG_VOLTAGE, val, BQ2415X_MASK_VO, BQ2415X_SHIFT_VO); }

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/* get battery regulation voltage in mV */
static int bq2415x_get_battery_regulation_voltage(struct bq2415x_device *bq) { int ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_VOLTAGE, BQ2415X_MASK_VO, BQ2415X_SHIFT_VO); if (ret < 0) return ret; return 10 * (350 + 2*ret); }

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/* set charge current in mA (platform data must provide resistor sense) */
static int bq2415x_set_charge_current(struct bq2415x_device *bq, int mA) { int val; if (bq->init_data.resistor_sense <= 0) return -EINVAL; val = (mA * bq->init_data.resistor_sense - 37400) / 6800; if (val < 0) val = 0; else if (val > 7) val = 7; return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CURRENT, val, BQ2415X_MASK_VI_CHRG | BQ2415X_MASK_RESET, BQ2415X_SHIFT_VI_CHRG); }

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/* get charge current in mA (platform data must provide resistor sense) */
static int bq2415x_get_charge_current(struct bq2415x_device *bq) { int ret; if (bq->init_data.resistor_sense <= 0) return -EINVAL; ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CURRENT, BQ2415X_MASK_VI_CHRG, BQ2415X_SHIFT_VI_CHRG); if (ret < 0) return ret; return (37400 + 6800*ret) / bq->init_data.resistor_sense; }

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/* set termination current in mA (platform data must provide resistor sense) */
static int bq2415x_set_termination_current(struct bq2415x_device *bq, int mA) { int val; if (bq->init_data.resistor_sense <= 0) return -EINVAL; val = (mA * bq->init_data.resistor_sense - 3400) / 3400; if (val < 0) val = 0; else if (val > 7) val = 7; return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CURRENT, val, BQ2415X_MASK_VI_TERM | BQ2415X_MASK_RESET, BQ2415X_SHIFT_VI_TERM); }

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Pali Rohár8398.81%150.00%
Anda-Maria Nicolae11.19%150.00%
Total84100.00%2100.00%

/* get termination current in mA (platform data must provide resistor sense) */
static int bq2415x_get_termination_current(struct bq2415x_device *bq) { int ret; if (bq->init_data.resistor_sense <= 0) return -EINVAL; ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CURRENT, BQ2415X_MASK_VI_TERM, BQ2415X_SHIFT_VI_TERM); if (ret < 0) return ret; return (3400 + 3400*ret) / bq->init_data.resistor_sense; }

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Pali Rohár6498.46%150.00%
Anda-Maria Nicolae11.54%150.00%
Total65100.00%2100.00%

/* set default value of property */ #define bq2415x_set_default_value(bq, prop) \ do { \ int ret = 0; \ if (bq->init_data.prop != -1) \ ret = bq2415x_set_##prop(bq, bq->init_data.prop); \ if (ret < 0) \ return ret; \ } while (0) /* set default values of all properties */
static int bq2415x_set_defaults(struct bq2415x_device *bq) { bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_DISABLE); bq2415x_exec_command(bq, BQ2415X_CHARGER_DISABLE); bq2415x_exec_command(bq, BQ2415X_CHARGE_TERMINATION_DISABLE); bq2415x_set_default_value(bq, current_limit); bq2415x_set_default_value(bq, weak_battery_voltage); bq2415x_set_default_value(bq, battery_regulation_voltage); if (bq->init_data.resistor_sense > 0) { bq2415x_set_default_value(bq, charge_current); bq2415x_set_default_value(bq, termination_current); bq2415x_exec_command(bq, BQ2415X_CHARGE_TERMINATION_ENABLE); } bq2415x_exec_command(bq, BQ2415X_CHARGER_ENABLE); return 0; }

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Pali Rohár96100.00%1100.00%
Total96100.00%1100.00%

/**** charger mode functions ****/ /* set charger mode */
static int bq2415x_set_mode(struct bq2415x_device *bq, enum bq2415x_mode mode) { int ret = 0; int charger = 0; int boost = 0; if (mode == BQ2415X_MODE_BOOST) boost = 1; else if (mode != BQ2415X_MODE_OFF) charger = 1; if (!charger) ret = bq2415x_exec_command(bq, BQ2415X_CHARGER_DISABLE); if (!boost) ret = bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_DISABLE); if (ret < 0) return ret; switch (mode) { case BQ2415X_MODE_OFF: dev_dbg(bq->dev, "changing mode to: Offline\n"); ret = bq2415x_set_current_limit(bq, 100); break; case BQ2415X_MODE_NONE: dev_dbg(bq->dev, "changing mode to: N/A\n"); ret = bq2415x_set_current_limit(bq, 100); break; case BQ2415X_MODE_HOST_CHARGER: dev_dbg(bq->dev, "changing mode to: Host/HUB charger\n"); ret = bq2415x_set_current_limit(bq, 500); break; case BQ2415X_MODE_DEDICATED_CHARGER: dev_dbg(bq->dev, "changing mode to: Dedicated charger\n"); ret = bq2415x_set_current_limit(bq, 1800); break; case BQ2415X_MODE_BOOST: /* Boost mode */ dev_dbg(bq->dev, "changing mode to: Boost\n"); ret = bq2415x_set_current_limit(bq, 100); break; } if (ret < 0) return ret; if (charger) ret = bq2415x_exec_command(bq, BQ2415X_CHARGER_ENABLE); else if (boost) ret = bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_ENABLE); if (ret < 0) return ret; bq2415x_set_default_value(bq, weak_battery_voltage); bq2415x_set_default_value(bq, battery_regulation_voltage); bq->mode = mode; sysfs_notify(&bq->charger->dev.kobj, NULL, "mode"); return 0; }

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Pali Rohár28799.31%266.67%
Krzysztof Kozlowski20.69%133.33%
Total289100.00%3100.00%


static bool bq2415x_update_reported_mode(struct bq2415x_device *bq, int mA) { enum bq2415x_mode mode; if (mA == 0) mode = BQ2415X_MODE_OFF; else if (mA < 500) mode = BQ2415X_MODE_NONE; else if (mA < 1800) mode = BQ2415X_MODE_HOST_CHARGER; else mode = BQ2415X_MODE_DEDICATED_CHARGER; if (bq->reported_mode == mode) return false; bq->reported_mode = mode; return true; }

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Pali Rohár75100.00%1100.00%
Total75100.00%1100.00%


static int bq2415x_notifier_call(struct notifier_block *nb, unsigned long val, void *v) { struct bq2415x_device *bq = container_of(nb, struct bq2415x_device, nb); struct power_supply *psy = v; union power_supply_propval prop; int ret; if (val != PSY_EVENT_PROP_CHANGED) return NOTIFY_OK; /* Ignore event if it was not send by notify_node/notify_device */ if (bq->notify_node) { if (!psy->dev.parent || psy->dev.parent->of_node != bq->notify_node) return NOTIFY_OK; } else if (bq->init_data.notify_device) { if (strcmp(psy->desc->name, bq->init_data.notify_device) != 0) return NOTIFY_OK; } dev_dbg(bq->dev, "notifier call was called\n"); ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_CURRENT_MAX, &prop); if (ret != 0) return NOTIFY_OK; if (!bq2415x_update_reported_mode(bq, prop.intval)) return NOTIFY_OK; /* if automode is not enabled do not tell about reported_mode */ if (bq->automode < 1) return NOTIFY_OK; schedule_delayed_work(&bq->work, 0); return NOTIFY_OK; }

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Pali Rohár18897.41%350.00%
Sebastian Reichel42.07%233.33%
Krzysztof Kozlowski10.52%116.67%
Total193100.00%6100.00%

/**** timer functions ****/ /* enable/disable auto resetting chip timer */
static void bq2415x_set_autotimer(struct bq2415x_device *bq, int state) { mutex_lock(&bq2415x_timer_mutex); if (bq->autotimer == state) { mutex_unlock(&bq2415x_timer_mutex); return; } bq->autotimer = state; if (state) { schedule_delayed_work(&bq->work, BQ2415X_TIMER_TIMEOUT * HZ); bq2415x_exec_command(bq, BQ2415X_TIMER_RESET); bq->timer_error = NULL; } else { cancel_delayed_work_sync(&bq->work); } mutex_unlock(&bq2415x_timer_mutex); }

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Pali Rohár91100.00%1100.00%
Total91100.00%1100.00%

/* called by bq2415x_timer_work on timer error */
static void bq2415x_timer_error(struct bq2415x_device *bq, const char *msg) { bq->timer_error = msg; sysfs_notify(&bq->charger->dev.kobj, NULL, "timer"); dev_err(bq->dev, "%s\n", msg); if (bq->automode > 0) bq->automode = 0; bq2415x_set_mode(bq, BQ2415X_MODE_OFF); bq2415x_set_autotimer(bq, 0); }

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Pali Rohár7597.40%266.67%
Krzysztof Kozlowski22.60%133.33%
Total77100.00%3100.00%

/* delayed work function for auto resetting chip timer */
static void bq2415x_timer_work(struct work_struct *work) { struct bq2415x_device *bq = container_of(work, struct bq2415x_device, work.work); int ret; int error; int boost; if (bq->automode > 0 && (bq->reported_mode != bq->mode)) { sysfs_notify(&bq->charger->dev.kobj, NULL, "reported_mode"); bq2415x_set_mode(bq, bq->reported_mode); } if (!bq->autotimer) return; ret = bq2415x_exec_command(bq, BQ2415X_TIMER_RESET); if (ret < 0) { bq2415x_timer_error(bq, "Resetting timer failed"); return; } boost = bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_STATUS); if (boost < 0) { bq2415x_timer_error(bq, "Unknown error"); return; } error = bq2415x_exec_command(bq, BQ2415X_FAULT_STATUS); if (error < 0) { bq2415x_timer_error(bq, "Unknown error"); return; } if (boost) { switch (error) { /* Non fatal errors, chip is OK */ case 0: /* No error */ break; case 6: /* Timer expired */ dev_err(bq->dev, "Timer expired\n"); break; case 3: /* Battery voltage too low */ dev_err(bq->dev, "Battery voltage to low\n"); break; /* Fatal errors, disable and reset chip */ case 1: /* Overvoltage protection (chip fried) */ bq2415x_timer_error(bq, "Overvoltage protection (chip fried)"); return; case 2: /* Overload */ bq2415x_timer_error(bq, "Overload"); return; case 4: /* Battery overvoltage protection */ bq2415x_timer_error(bq, "Battery overvoltage protection"); return; case 5: /* Thermal shutdown (too hot) */ bq2415x_timer_error(bq, "Thermal shutdown (too hot)"); return; case 7: /* N/A */ bq2415x_timer_error(bq, "Unknown error"); return; } } else { switch (error) { /* Non fatal errors, chip is OK */ case 0: /* No error */ break; case 2: /* Sleep mode */ dev_err(bq->dev, "Sleep mode\n"); break; case 3: /* Poor input source */ dev_err(bq->dev, "Poor input source\n"); break; case 6: /* Timer expired */ dev_err(bq->dev, "Timer expired\n"); break; case 7: /* No battery */ dev_err(bq->dev, "No battery\n"); break; /* Fatal errors, disable and reset chip */ case 1: /* Overvoltage protection (chip fried) */ bq2415x_timer_error(bq, "Overvoltage protection (chip fried)"); return; case 4: /* Battery overvoltage protection */ bq2415x_timer_error(bq, "Battery overvoltage protection"); return; case 5: /* Thermal shutdown (too hot) */ bq2415x_timer_error(bq, "Thermal shutdown (too hot)"); return; } } schedule_delayed_work(&bq->work, BQ2415X_TIMER_TIMEOUT * HZ); }

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Pali Rohár34387.50%125.00%
Sebastian Reichel4310.97%125.00%
Anton Vorontsov41.02%125.00%
Krzysztof Kozlowski20.51%125.00%
Total392100.00%4100.00%

/**** power supply interface code ****/ static enum power_supply_property bq2415x_power_supply_props[] = { /* TODO: maybe add more power supply properties */ POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_MODEL_NAME, };
static int bq2415x_power_supply_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct bq2415x_device *bq = power_supply_get_drvdata(psy); int ret; switch (psp) { case POWER_SUPPLY_PROP_STATUS: ret = bq2415x_exec_command(bq, BQ2415X_CHARGE_STATUS); if (ret < 0) return ret; else if (ret == 0) /* Ready */ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; else if (ret == 1) /* Charge in progress */ val->intval = POWER_SUPPLY_STATUS_CHARGING; else if (ret == 2) /* Charge done */ val->intval = POWER_SUPPLY_STATUS_FULL; else val->intval = POWER_SUPPLY_STATUS_UNKNOWN; break; case POWER_SUPPLY_PROP_MODEL_NAME: val->strval = bq->model; break; default: return -EINVAL; } return 0; }

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Pali Rohár12999.23%150.00%
Krzysztof Kozlowski10.77%150.00%
Total130100.00%2100.00%


static int bq2415x_power_supply_init(struct bq2415x_device *bq) { int ret; int chip; char revstr[8]; struct power_supply_config psy_cfg = { .drv_data = bq, }; bq->charger_desc.name = bq->name; bq->charger_desc.type = POWER_SUPPLY_TYPE_USB; bq->charger_desc.properties = bq2415x_power_supply_props; bq->charger_desc.num_properties = ARRAY_SIZE(bq2415x_power_supply_props); bq->charger_desc.get_property = bq2415x_power_supply_get_property; ret = bq2415x_detect_chip(bq); if (ret < 0) chip = BQUNKNOWN; else chip = ret; ret = bq2415x_detect_revision(bq); if (ret < 0) strcpy(revstr, "unknown"); else sprintf(revstr, "1.%d", ret); bq->model = kasprintf(GFP_KERNEL, "chip %s, revision %s, vender code %.3d", bq2415x_chip_name[chip], revstr, bq2415x_get_vender_code(bq)); if (!bq->model) { dev_err(bq->dev, "failed to allocate model name\n"); return -ENOMEM; } bq->charger = power_supply_register(bq->dev, &bq->charger_desc, &psy_cfg); if (IS_ERR(bq->charger)) { kfree(bq->model); return PTR_ERR(bq->charger); } return 0; }

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Pali Rohár18984.38%133.33%
Krzysztof Kozlowski3515.62%266.67%
Total224100.00%3100.00%


static void bq2415x_power_supply_exit(struct bq2415x_device *bq) { bq->autotimer = 0; if (bq->automode > 0) bq->automode = 0; cancel_delayed_work_sync(&bq->work); power_supply_unregister(bq->charger); kfree(bq->model); }

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Pali Rohár53100.00%1100.00%
Total53100.00%1100.00%

/**** additional sysfs entries for power supply interface ****/ /* show *_status entries */
static ssize_t bq2415x_sysfs_show_status(struct device *dev, struct device_attribute *attr, char *buf) { struct power_supply *psy = dev_get_drvdata(dev); struct bq2415x_device *bq = power_supply_get_drvdata(psy); enum bq2415x_command command; int ret; if (strcmp(attr->attr.name, "otg_status") == 0) command = BQ2415X_OTG_STATUS; else if (strcmp(attr->attr.name, "charge_status") == 0) command = BQ2415X_CHARGE_STATUS; else if (strcmp(attr->attr.name, "boost_status") == 0) command = BQ2415X_BOOST_STATUS; else if (strcmp(attr->attr.name, "fault_status") == 0) command = BQ2415X_FAULT_STATUS; else return -EINVAL; ret = bq2415x_exec_command(bq, command); if (ret < 0) return ret; return sprintf(buf, "%d\n", ret); }

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Pali Rohár15899.37%150.00%
Krzysztof Kozlowski10.63%150.00%
Total159100.00%2100.00%

/* * set timer entry: * auto - enable auto mode * off - disable auto mode * (other values) - reset chip timer */
static ssize_t bq2415x_sysfs_set_timer(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct power_supply *psy = dev_get_drvdata(dev); struct bq2415x_device *bq = power_supply_get_drvdata(psy); int ret = 0; if (strncmp(buf, "auto", 4) == 0) bq2415x_set_autotimer(bq, 1); else if (strncmp(buf, "off", 3) == 0) bq2415x_set_autotimer(bq, 0); else ret = bq2415x_exec_command(bq, BQ2415X_TIMER_RESET); if (ret < 0) return ret; return count; }

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Pali Rohár11199.11%150.00%
Krzysztof Kozlowski10.89%150.00%
Total112100.00%2100.00%

/* show timer entry (auto or off) */
static ssize_t bq2415x_sysfs_show_timer(struct device *dev, struct device_attribute *attr, char *buf) { struct power_supply *psy = dev_get_drvdata(dev); struct bq2415x_device *bq = power_supply_get_drvdata(psy); if (bq->timer_error) return sprintf(buf, "%s\n", bq->timer_error); if (bq->autotimer) return sprintf(buf, "auto\n"); return sprintf(buf, "off\n"); }

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Pali Rohár7998.75%150.00%
Krzysztof Kozlowski11.25%150.00%
Total80100.00%2100.00%

/* * set mode entry: * auto - if automode is supported, enable it and set mode to reported * none - disable charger and boost mode * host - charging mode for host/hub chargers (current limit 500mA) * dedicated - charging mode for dedicated chargers (unlimited current limit) * boost - disable charger and enable boost mode */
static ssize_t bq2415x_sysfs_set_mode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct power_supply *psy = dev_get_drvdata(dev); struct bq2415x_device *bq = power_supply_get_drvdata(psy); enum bq2415x_mode mode; int ret = 0; if (strncmp(buf, "auto", 4) == 0) { if (bq->automode < 0) return -EINVAL; bq->automode = 1; mode = bq->reported_mode; } else if (strncmp(buf, "off", 3) == 0) { if (bq->automode > 0) bq->automode = 0; mode = BQ2415X_MODE_OFF; } else if (strncmp(buf, "none", 4) == 0) { if (bq->automode > 0) bq->automode = 0; mode = BQ2415X_MODE_NONE; } else if (strncmp(buf, "host", 4) == 0) { if (bq->automode > 0) bq->automode = 0; mode = BQ2415X_MODE_HOST_CHARGER; } else if (strncmp(buf, "dedicated", 9) == 0) { if (bq->automode > 0) bq->automode = 0; mode = BQ2415X_MODE_DEDICATED_CHARGER; } else if (strncmp(buf, "boost", 5) == 0) { if (bq->automode > 0) bq->automode = 0; mode = BQ2415X_MODE_BOOST; } else if (strncmp(buf, "reset", 5) == 0) { bq2415x_reset_chip(bq); bq2415x_set_defaults(bq); if (bq->automode <= 0) return count; bq->automode = 1; mode = bq->reported_mode; } else { return -EINVAL; } ret = bq2415x_set_mode(bq, mode); if (ret < 0) return ret; return count; }

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Pali Rohár33598.82%240.00%
Anton Vorontsov20.59%120.00%
Anda-Maria Nicolae10.29%120.00%
Krzysztof Kozlowski10.29%120.00%
Total339100.00%5100.00%

/* show mode entry (auto, none, host, dedicated or boost) */
static ssize_t bq2415x_sysfs_show_mode(struct device *dev, struct device_attribute *attr, char *buf) { struct power_supply *psy = dev_get_drvdata(dev); struct bq2415x_device *bq = power_supply_get_drvdata(psy); ssize_t ret = 0; if (bq->automode > 0) ret += sprintf(buf+ret, "auto ("); switch (bq->mode) { case BQ2415X_MODE_OFF: ret += sprintf(buf+ret, "off"); break; case BQ2415X_MODE_NONE: ret += sprintf(buf+ret, "none"); break; case BQ2415X_MODE_HOST_CHARGER: ret += sprintf(buf+ret, "host"); break; case BQ2415X_MODE_DEDICATED_CHARGER: ret += sprintf(buf+ret, "dedicated"); break; case BQ2415X_MODE_BOOST: ret += sprintf(buf+ret, "boost"); break; } if (bq->automode > 0) ret += sprintf(buf+ret, ")"); ret += sprintf(buf+ret, "\n"); return ret; }

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Pali Rohár17999.44%266.67%
Krzysztof Kozlowski10.56%133.33%
Total180100.00%3100.00%

/* show reported_mode entry (none, host, dedicated or boost) */
static ssize_t bq2415x_sysfs_show_reported_mode(struct device *dev, struct device_attribute *attr, char *buf) { struct power_supply *psy = dev_get_drvdata(dev); struct bq2415x_device *bq = power_supply_get_drvdata(psy); if (bq->automode < 0) return -EINVAL; switch (bq->reported_mode) { case BQ2415X_MODE_OFF: return sprintf(buf, "off\n"); case BQ2415X_MODE_NONE: return sprintf(buf, "none\n"); case BQ2415X_MODE_HOST_CHARGER: return sprintf(buf, "host\n"); case BQ2415X_MODE_DEDICATED_CHARGER: return sprintf(buf, "dedicated\n"); case BQ2415X_MODE_BOOST: return sprintf(buf, "boost\n"); } return -EINVAL; }

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Pali Rohár11899.16%266.67%
Krzysztof Kozlowski10.84%133.33%
Total119100.00%3100.00%

/* directly set raw value to chip register, format: 'register value' */
static ssize_t bq2415x_sysfs_set_registers(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct power_supply *psy = dev_get_drvdata(dev); struct bq2415x_device *bq = power_supply_get_drvdata(psy); ssize_t ret = 0; unsigned int reg; unsigned int val; if (sscanf(buf, "%x %x", &reg, &val) != 2) return -EINVAL; if (reg > 4 || val > 255) return -EINVAL; ret = bq2415x_i2c_write(bq, reg, val); if (ret < 0) return ret; return count; }

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Pali Rohár11499.13%150.00%
Krzysztof Kozlowski10.87%150.00%
Total115100.00%2100.00%

/* print value of chip register, format: 'register=value' */
static ssize_t bq2415x_sysfs_print_reg(struct bq2415x_device *bq, u8 reg, char *buf) { int ret = bq2415x_i2c_read(bq, reg); if (ret < 0) return sprintf(buf, "%#.2x=error %d\n", reg, ret); return sprintf(buf, "%#.2x=%#.2x\n", reg, ret); }

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Pali Rohár58100.00%1100.00%
Total58100.00%1100.00%

/* show all raw values of chip register, format per line: 'register=value' */
static ssize_t bq2415x_sysfs_show_registers(struct device *dev, struct device_attribute *attr, char *buf) { struct power_supply *psy = dev_get_drvdata(dev); struct bq2415x_device *bq = power_supply_get_drvdata(psy); ssize_t ret = 0; ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_STATUS, buf+ret); ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_CONTROL, buf+ret); ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_VOLTAGE, buf+ret); ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_VENDER, buf+ret); ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_CURRENT, buf+ret); return ret; }

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Pali Rohár11299.12%150.00%
Krzysztof Kozlowski10.88%150.00%
Total113100.00%2100.00%

/* set current and voltage limit entries (in mA or mV) */
static ssize_t bq2415x_sysfs_set_limit(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct power_supply *psy = dev_get_drvdata(dev); struct bq2415x_device *bq = power_supply_get_drvdata(psy); long val; int ret; if (kstrtol(buf, 10, &val) < 0) return -EINVAL; if (strcmp(attr->attr.name, "current_limit") == 0) ret = bq2415x_set_current_limit(bq, val); else if (strcmp(attr->attr.name, "weak_battery_voltage") == 0) ret = bq2415x_set_weak_battery_voltage(bq, val); else if (strcmp(attr->attr.name, "battery_regulation_voltage") == 0) ret = bq2415x_set_battery_regulation_voltage(bq, val); else if (strcmp(attr->attr.name, "charge_current") == 0) ret = bq2415x_set_charge_current(bq, val); else if (strcmp(attr->attr.name, "termination_current") == 0) ret = bq2415x_set_termination_current(bq, val); else return -EINVAL; if (ret < 0) return ret; return count; }

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Pali Rohár20899.52%150.00%
Krzysztof Kozlowski10.48%150.00%
Total209100.00%2100.00%

/* show current and voltage limit entries (in mA or mV) */
static ssize_t bq2415x_sysfs_show_limit(struct device *dev, struct device_attribute *attr, char *buf) { struct power_supply *psy = dev_get_drvdata(dev); struct bq2415x_device *bq = power_supply_get_drvdata(psy); int ret; if (strcmp(attr->attr.name, "current_limit") == 0) ret = bq2415x_get_current_limit(bq); else if (strcmp(attr->attr.name, "weak_battery_voltage") == 0) ret = bq2415x_get_weak_battery_voltage(bq); else if (strcmp(attr->attr.name, "battery_regulation_voltage") == 0) ret = bq2415x_get_battery_regulation_voltage(bq); else if (strcmp(attr->attr.name, "charge_current") == 0) ret = bq2415x_get_charge_current(bq); else if (strcmp(attr->attr.name, "termination_current") == 0) ret = bq2415x_get_termination_current(bq); else return -EINVAL; if (ret < 0) return ret; return sprintf(buf, "%d\n", ret); }

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PersonTokensPropCommitsCommitProp
Pali Rohár18099.45%150.00%
Krzysztof Kozlowski10.55%150.00%
Total181100.00%2100.00%

/* set *_enable entries */
static ssize_t bq2415x_sysfs_set_enable(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct power_supply *psy = dev_get_drvdata(dev); struct bq2415x_device *bq = power_supply_get_drvdata(psy); enum bq2415x_command command; long val; int ret; if (kstrtol(buf, 10, &val) < 0) return -EINVAL; if (strcmp(attr->attr.name, "charge_termination_enable") == 0) command = val ? BQ2415X_CHARGE_TERMINATION_ENABLE : BQ2415X_CHARGE_TERMINATION_DISABLE; else if (strcmp(attr->attr.name, "high_impedance_enable") == 0) command = val ? BQ2415X_HIGH_IMPEDANCE_ENABLE : BQ2415X_HIGH_IMPEDANCE_DISABLE; else if (strcmp(attr->attr.name, "otg_pin_enable") == 0) command = val ? BQ2415X_OTG_PIN_ENABLE : BQ2415X_OTG_PIN_DISABLE; else if (strcmp(attr->attr.name, "stat_pin_enable") == 0) command = val ? BQ2415X_STAT_PIN_ENABLE : BQ2415X_STAT_PIN_DISABLE; else return -EINVAL; ret = bq2415x_exec_command(bq, command); if (ret < 0) return ret; return count; }

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PersonTokensPropCommitsCommitProp
Pali Rohár19299.48%150.00%
Krzysztof Kozlowski10.52%150.00%
Total193100.00%2100.00%

/* show *_enable entries */
static ssize_t bq2415x_sysfs_show_enable(struct device *dev, struct device_attribute *attr, char *buf) { struct power_supply *psy = dev_get_drvdata(dev); struct bq2415x_device *bq = power_supply_get_drvdata(psy); enum bq2415x_command command; int ret; if (strcmp(attr->attr.name, "charge_termination_enable") == 0) command = BQ2415X_CHARGE_TERMINATION_STATUS; else if (strcmp(attr->attr.name, "high_impedance_enable") == 0) command = BQ2415X_HIGH_IMPEDANCE_STATUS; else if (strcmp(attr->attr.name, "otg_pin_enable") == 0) command = BQ2415X_OTG_PIN_STATUS; else if (strcmp(attr->attr.name, "stat_pin_enable") == 0) command = BQ2415X_STAT_PIN_STATUS; else return -EINVAL; ret = bq2415x_exec_command(bq, command); if (ret < 0) return ret; return sprintf(buf, "%d\n", ret); }

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PersonTokensPropCommitsCommitProp
Pali Rohár15899.37%150.00%
Krzysztof Kozlowski10.63%150.00%
Total159100.00%2100.00%

static DEVICE_ATTR(current_limit, S_IWUSR | S_IRUGO, bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit); static DEVICE_ATTR(weak_battery_voltage, S_IWUSR | S_IRUGO, bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit); static DEVICE_ATTR(battery_regulation_voltage, S_IWUSR | S_IRUGO, bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit); static DEVICE_ATTR(charge_current, S_IWUSR | S_IRUGO, bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit); static DEVICE_ATTR(termination_current, S_IWUSR | S_IRUGO, bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit); static DEVICE_ATTR(charge_termination_enable, S_IWUSR | S_IRUGO, bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable); static DEVICE_ATTR(high_impedance_enable, S_IWUSR | S_IRUGO, bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable); static DEVICE_ATTR(otg_pin_enable, S_IWUSR | S_IRUGO, bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable); static DEVICE_ATTR(stat_pin_enable, S_IWUSR | S_IRUGO, bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable); static DEVICE_ATTR(reported_mode, S_IRUGO, bq2415x_sysfs_show_reported_mode, NULL); static DEVICE_ATTR(mode, S_IWUSR | S_IRUGO, bq2415x_sysfs_show_mode, bq2415x_sysfs_set_mode); static DEVICE_ATTR(timer, S_IWUSR | S_IRUGO, bq2415x_sysfs_show_timer, bq2415x_sysfs_set_timer); static DEVICE_ATTR(registers, S_IWUSR | S_IRUGO, bq2415x_sysfs_show_registers, bq2415x_sysfs_set_registers); static DEVICE_ATTR(otg_status, S_IRUGO, bq2415x_sysfs_show_status, NULL); static DEVICE_ATTR(charge_status, S_IRUGO, bq2415x_sysfs_show_status, NULL); static DEVICE_ATTR(boost_status, S_IRUGO, bq2415x_sysfs_show_status, NULL); static DEVICE_ATTR(fault_status, S_IRUGO, bq2415x_sysfs_show_status, NULL); static struct attribute *bq2415x_sysfs_attributes[] = { /* * TODO: some (appropriate) of these attrs should be switched to * use power supply class props. */ &dev_attr_current_limit.attr, &dev_attr_weak_battery_voltage.attr, &dev_attr_battery_regulation_voltage.attr, &dev_attr_charge_current.attr, &dev_attr_termination_current.attr, &dev_attr_charge_termination_enable.attr, &dev_attr_high_impedance_enable.attr, &dev_attr_otg_pin_enable.attr, &dev_attr_stat_pin_enable.attr, &dev_attr_reported_mode.attr, &dev_attr_mode.attr, &dev_attr_timer.attr, &dev_attr_registers.attr, &dev_attr_otg_status.attr, &dev_attr_charge_status.attr, &dev_attr_boost_status.attr, &dev_attr_fault_status.attr, NULL, }; static const struct attribute_group bq2415x_sysfs_attr_group = { .attrs = bq2415x_sysfs_attributes, };
static int bq2415x_sysfs_init(struct bq2415x_device *bq) { return sysfs_create_group(&bq->charger->dev.kobj, &bq2415x_sysfs_attr_group); }

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PersonTokensPropCommitsCommitProp
Pali Rohár2592.59%150.00%
Krzysztof Kozlowski27.41%150.00%
Total27100.00%2100.00%


static void bq2415x_sysfs_exit(struct bq2415x_device *bq) { sysfs_remove_group(&bq->charger->dev.kobj, &bq2415x_sysfs_attr_group); }

Contributors

PersonTokensPropCommitsCommitProp
Pali Rohár2492.31%150.00%
Krzysztof Kozlowski27.69%150.00%
Total26100.00%2100.00%

/* main bq2415x probe function */
static int bq2415x_probe(struct i2c_client *client, const struct i2c_device_id *id) { int ret; int num; char *name = NULL; struct bq2415x_device *bq; struct device_node *np = client->dev.of_node; struct bq2415x_platform_data *pdata = client->dev.platform_data; const struct acpi_device_id *acpi_id = NULL; struct power_supply *notify_psy = NULL; union power_supply_propval prop; if (!np && !pdata && !ACPI_HANDLE(&client->dev)) { dev_err(&client->dev, "Neither devicetree, nor platform data, nor ACPI support\n"); return -ENODEV; } /* Get new ID for the new device */ mutex_lock(&bq2415x_id_mutex); num = idr_alloc(&bq2415x_id, client, 0, 0, GFP_KERNEL); mutex_unlock(&bq2415x_id_mutex); if (num < 0) return num; if (id) { name = kasprintf(GFP_KERNEL, "%s-%d", id->name, num); } else if (ACPI_HANDLE(&client->dev)) { acpi_id = acpi_match_device(client->dev.driver->acpi_match_table, &client->dev); if (!acpi_id) { dev_err(&client->dev, "failed to match device name\n"); ret = -ENODEV; goto error_1; } name = kasprintf(GFP_KERNEL, "%s-%d", acpi_id->id, num); } if (!name) { dev_err(&client->dev, "failed to allocate device name\n"); ret = -ENOMEM; goto error_1; } bq = devm_kzalloc(&client->dev, sizeof(*bq), GFP_KERNEL); if (!bq) { ret = -ENOMEM; goto error_2; } i2c_set_clientdata(client, bq); bq->id = num; bq->dev = &client->dev; if (id) bq->chip = id->driver_data; else if (ACPI_HANDLE(bq->dev)) bq->chip = acpi_id->driver_data; bq->name = name; bq->mode = BQ2415X_MODE_OFF; bq->reported_mode = BQ2415X_MODE_OFF; bq->autotimer = 0; bq->automode = 0; if (np || ACPI_HANDLE(bq->dev)) { ret = device_property_read_u32(bq->dev, "ti,current-limit", &bq->init_data.current_limit); if (ret) goto error_2; ret = device_property_read_u32(bq->dev, "ti,weak-battery-voltage", &bq->init_data.weak_battery_voltage); if (ret) goto error_2; ret = device_property_read_u32(bq->dev, "ti,battery-regulation-voltage", &bq->init_data.battery_regulation_voltage); if (ret) goto error_2; ret = device_property_read_u32(bq->dev, "ti,charge-current", &bq->init_data.charge_current); if (ret) goto error_2; ret = device_property_read_u32(bq->dev, "ti,termination-current", &bq->init_data.termination_current); if (ret) goto error_2; ret = device_property_read_u32(bq->dev, "ti,resistor-sense", &bq->init_data.resistor_sense); if (ret) goto error_2; if (np) bq->notify_node = of_parse_phandle(np, "ti,usb-charger-detection", 0); } else { memcpy(&bq->init_data, pdata, sizeof(bq->init_data)); } bq2415x_reset_chip(bq); ret = bq2415x_power_supply_init(bq); if (ret) { dev_err(bq->dev, "failed to register power supply: %d\n", ret); goto error_2; } ret = bq2415x_sysfs_init(bq); if (ret) { dev_err(bq->dev, "failed to create sysfs entries: %d\n", ret); goto error_3; } ret = bq2415x_set_defaults(bq); if (ret) { dev_err(bq->dev, "failed to set default values: %d\n", ret); goto error_4; } if (bq->notify_node || bq->init_data.notify_device) { bq->nb.notifier_call = bq2415x_notifier_call; ret = power_supply_reg_notifier(&bq->nb); if (ret) { dev_err(bq->dev, "failed to reg notifier: %d\n", ret); goto error_4; } bq->automode = 1; dev_info(bq->dev, "automode supported, waiting for events\n"); } else { bq->automode = -1; dev_info(bq->dev, "automode not supported\n"); } /* Query for initial reported_mode and set it */ if (bq->nb.notifier_call) { if (np) { notify_psy = power_supply_get_by_phandle(np, "ti,usb-charger-detection"); if (IS_ERR(notify_psy)) notify_psy = NULL; } else if (bq->init_data.notify_device) { notify_psy = power_supply_get_by_name( bq->init_data.notify_device); } } if (notify_psy) { ret = power_supply_get_property(notify_psy, POWER_SUPPLY_PROP_CURRENT_MAX, &prop); power_supply_put(notify_psy); if (ret == 0) { bq2415x_update_reported_mode(bq, prop.intval); bq2415x_set_mode(bq, bq->reported_mode); } } INIT_DELAYED_WORK(&bq->work, bq2415x_timer_work); bq2415x_set_autotimer(bq, 1); dev_info(bq->dev, "driver registered\n"); return 0; error_4: bq2415x_sysfs_exit(bq); error_3: bq2415x_power_supply_exit(bq); error_2: if (bq) of_node_put(bq->notify_node); kfree(name); error_1: mutex_lock(&bq2415x_id_mutex); idr_remove(&bq2415x_id, num); mutex_unlock(&bq2415x_id_mutex); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Pali Rohár61865.47%436.36%
Sebastian Reichel13814.62%19.09%
Anda-Maria Nicolae12513.24%19.09%
Colin Ian King252.65%19.09%
Krzysztof Kozlowski232.44%218.18%
Tejun Heo90.95%19.09%
Sachin Kamat60.64%19.09%
Total944100.00%11100.00%

/* main bq2415x remove function */
static int bq2415x_remove(struct i2c_client *client) { struct bq2415x_device *bq = i2c_get_clientdata(client); if (bq->nb.notifier_call) power_supply_unreg_notifier(&bq->nb); of_node_put(bq->notify_node); bq2415x_sysfs_exit(bq); bq2415x_power_supply_exit(bq); bq2415x_reset_chip(bq); mutex_lock(&bq2415x_id_mutex); idr_remove(&bq2415x_id, bq->id); mutex_unlock(&bq2415x_id_mutex); dev_info(bq->dev, "driver unregistered\n"); kfree(bq->name); return 0; }

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PersonTokensPropCommitsCommitProp
Pali Rohár9595.00%375.00%
Krzysztof Kozlowski55.00%125.00%
Total100100.00%4100.00%

static const struct i2c_device_id bq2415x_i2c_id_table[] = { { "bq2415x", BQUNKNOWN }, { "bq24150", BQ24150 }, { "bq24150a", BQ24150A }, { "bq24151", BQ24151 }, { "bq24151a", BQ24151A }, { "bq24152", BQ24152 }, { "bq24153", BQ24153 }, { "bq24153a", BQ24153A }, { "bq24155", BQ24155 }, { "bq24156", BQ24156 }, { "bq24156a", BQ24156A }, { "bq24157s", BQ24157S }, { "bq24158", BQ24158 }, {}, }; MODULE_DEVICE_TABLE(i2c, bq2415x_i2c_id_table); #ifdef CONFIG_ACPI static const struct acpi_device_id bq2415x_i2c_acpi_match[] = { { "BQ2415X", BQUNKNOWN }, { "BQ241500", BQ24150 }, { "BQA24150", BQ24150A }, { "BQ241510", BQ24151 }, { "BQA24151", BQ24151A }, { "BQ241520", BQ24152 }, { "BQ241530", BQ24153 }, { "BQA24153", BQ24153A }, { "BQ241550", BQ24155 }, { "BQ241560", BQ24156 }, { "BQA24156", BQ24156A }, { "BQS24157", BQ24157S }, { "BQ241580", BQ24158 }, {}, }; MODULE_DEVICE_TABLE(acpi, bq2415x_i2c_acpi_match); #endif #ifdef CONFIG_OF static const struct of_device_id bq2415x_of_match_table[] = { { .compatible = "ti,bq24150" }, { .compatible = "ti,bq24150a" }, { .compatible = "ti,bq24151" }, { .compatible = "ti,bq24151a" }, { .compatible = "ti,bq24152" }, { .compatible = "ti,bq24153" }, { .compatible = "ti,bq24153a" }, { .compatible = "ti,bq24155" }, { .compatible = "ti,bq24156" }, { .compatible = "ti,bq24156a" }, { .compatible = "ti,bq24157s" }, { .compatible = "ti,bq24158" }, {}, }; MODULE_DEVICE_TABLE(of, bq2415x_of_match_table); #endif static struct i2c_driver bq2415x_driver = { .driver = { .name = "bq2415x-charger", .of_match_table = of_match_ptr(bq2415x_of_match_table), .acpi_match_table = ACPI_PTR(bq2415x_i2c_acpi_match), }, .probe = bq2415x_probe, .remove = bq2415x_remove, .id_table = bq2415x_i2c_id_table, }; module_i2c_driver(bq2415x_driver); MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>"); MODULE_DESCRIPTION("bq2415x charger driver"); MODULE_LICENSE("GPL");

Overall Contributors

PersonTokensPropCommitsCommitProp
Pali Rohár748692.45%626.09%
Anda-Maria Nicolae2643.26%313.04%
Sebastian Reichel1882.32%28.70%
Krzysztof Kozlowski921.14%521.74%
Colin Ian King250.31%14.35%
Anton Vorontsov230.28%14.35%
Tejun Heo90.11%14.35%
Sachin Kamat70.09%28.70%
Alexandre Belloni20.02%14.35%
Pavel Machek10.01%14.35%
Total8097100.00%23100.00%
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