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bq275x0_battery.c
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bq275x0_battery.c
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/*
* BQ275x0 battery driver
*
* Copyright (C) 2010 Audi PC Huang <AudiPCHuang@fihtdc.com>
* Copyright (C) 2008 Rodolfo Giometti <giometti@linux.it>
* Copyright (C) 2008 Eurotech S.p.A. <info@eurotech.it>
*
* Based on a previous work by Copyright (C) 2008 Texas Instruments, Inc.
*
* This package is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
*/
#include <linux/module.h>
#include <linux/param.h>
#include <linux/jiffies.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/idr.h>
#include <linux/i2c.h>
#include <linux/mfd/pmic8058.h> /* for controlling pmic8058 GPIO */
#include <linux/wakelock.h>
#include <mach/gpio.h>
#include <mach/bq275x0_battery.h>
#include <mach/ds2784.h>
#include <mach/irqs.h>
#define BATTERY_POLLING_TIMER 30000
#define BATTERY_POLLING_TIMER2 90000
/* If the system has several batteries we need a different name for each
* of them...
*/
static DEFINE_IDR(battery_id);
static DEFINE_MUTEX(battery_mutex);
struct bq275x0_device_info {
struct device *dev;
int id;
int voltage_uV;
int current_uA;
int temp_C;
int charge_rsoc;
int health;
int present;
struct power_supply bat;
int polling_interval;
unsigned pmic_BATLOW;
unsigned pmic_BATGD;
bool dev_ready;
bool chg_inh;
struct timer_list polling_timer;
struct work_struct bq275x0_BATGD;
struct work_struct bq275x0_BATLOW;
struct work_struct bq275x0_update;
struct i2c_client *client;
struct wake_lock bq275x0_wakelock;
short chg_inh_temp_h;
short chg_inh_temp_l;
};
struct manufacturer_info {
u8 dfi_ver;
char prj_name[6];
u8 date[4];
u8 other[21];
};
static enum power_supply_property bq275x0_battery_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CAPACITY,
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_TECHNOLOGY,
};
static struct bq275x0_device_info *di;
extern u32 msm_batt_get_batt_status(void);
extern int msm_batt_OT_protection(void);
extern void msm_batt_notify_battery_full(void);
static void bq275x0_endian_adjust(u8* buf, int len)
{
int i;
u8 temp[4];
for (i = 0; i < len; i++)
temp[(len - 1) - i] = buf[i];
for (i = 0; i < len; i++)
buf[i] = temp[i];
}
/*
* bq275x0 specific code
*/
static int bq275x0_read(struct bq275x0_device_info *di, u8 cmd, u8 *data, int length)
{
int ret;
struct i2c_msg msgs[] = {
[0] = {
.addr = di->client->addr,
.flags = 0,
.buf = (void *)&cmd,
.len = 1
},
[1] = {
.addr = di->client->addr,
.flags = I2C_M_RD,
.buf = (void *)data,
.len = length
}
};
ret = i2c_transfer(di->client->adapter, msgs, 2);
mdelay(1);
return (ret < 0) ? -1 : 0;
}
static int bq275x0_write(struct bq275x0_device_info *di, u8 *cmd, int length)
{
int ret;
struct i2c_msg msgs[] = {
[0] = {
.addr = di->client->addr,
.flags = 0,
.buf = (void *)cmd,
.len = length
},
};
ret = i2c_transfer(di->client->adapter, msgs, 1);
mdelay(16);
return (ret < 0) ? -1 : 0;
}
static int bq275x0_battery_control_command(u16 subcommand, u8* data, int len)
{
u8 cmd[3];
cmd[0] = BQ275X0_CMD_CNTL;
memcpy(&cmd[1], &subcommand, sizeof(u16));
if (bq275x0_write(di, cmd, sizeof(cmd)))
return -1;
if (len != 0)
if (bq275x0_read(di, BQ275X0_CMD_CNTL, data, len))
return -1;
return 0;
}
int bq275x0_battery_access_data_flash(u8 subclass, u8 offset, u8* buf, int len, bool write)
{
int i = 0;
unsigned sum= 0;
u8 cmd[33];
u8 block_num= offset / 32;
u8 cmd_code = BQ275X0_EXT_CMD_DFD + offset % 32;
u8 checksum = 0;
/* Set SEALED/UNSEALED mode. */
cmd[0] = BQ275X0_EXT_CMD_DFDCNTL;
cmd[1] = 0x00;
if (bq275x0_write(di, cmd, 2))
return -1;
/* Set subclass */
cmd[0] = BQ275X0_EXT_CMD_DFCLS;
cmd[1] = subclass;
if (bq275x0_write(di, cmd, 2))
return -1;
/* Set block to R/W */
cmd[0] = BQ275X0_EXT_CMD_DFBLK;
cmd[1] = block_num;
if (bq275x0_write(di, cmd, 2))
return -1;
if (write) {
/* Calculate checksum */
for (i = 0; i < len; i++)
sum += buf[i];
checksum = 0xFF - (sum & 0x00FF);
/* Set checksum */
cmd[0] = BQ275X0_EXT_CMD_DFDCKS;
cmd[1] = checksum;
if (bq275x0_write(di, cmd, 2))
return -1;
/* Write data */
cmd[0] = cmd_code;
memcpy((cmd + 1), buf, len);
if (bq275x0_write(di, cmd, (len + 1)))
return -1;
} else {
/* Read data */
if (bq275x0_read(di, cmd_code, buf, len))
return -1;
}
return 0;
}
static u16 bq275x0_battery_flags(void)
{
int ret;
u16 flags = 0;
ret = bq275x0_read(di, BQ275X0_CMD_FLAGS, (u8*)&flags, sizeof(u16));
if (ret < 0) {
dev_err(di->dev, "error reading flags\n");
return 0;
}
return flags;
}
/*
* Return the battery temperature in Celsius degrees
* Or < 0 if something fails.
*/
int bq275x0_battery_temperature(void)
{
int ret;
s16 temp = 0;
ret = bq275x0_read(di, BQ275X0_CMD_TEMP, (u8*)&temp, sizeof(s16));
if (ret) {
dev_err(di->dev, "error reading temperature\n");
return ret;
}
return temp - (273 * 10);
}
EXPORT_SYMBOL(bq275x0_battery_temperature);
/*
* Return the battery Voltage in milivolts
* Or < 0 if something fails.
*/
int bq275x0_battery_voltage(void)
{
int ret;
s16 volt = 0;
ret = bq275x0_read(di, BQ275X0_CMD_VOLT, (u8*)&volt, sizeof(s16));
if (ret) {
dev_err(di->dev, "error reading voltage\n");
return ret;
}
return volt;
}
EXPORT_SYMBOL(bq275x0_battery_voltage);
/*
* Return the battery average current
* Note that current can be negative signed as well
* Or 0 if something fails.
*/
int bq275x0_battery_current(void)
{
int ret;
s16 curr = 0;
//u16 flags = 0;
ret = bq275x0_read(di, BQ275X0_CMD_AI, (u8*)&curr, sizeof(s16));
if (ret) {
dev_err(di->dev, "error reading current\n");
return 0;
}
/*ret = bq275x0_read(di, BQ275X0_CMD_FLAGS, (u8*)&flags, sizeof(s16));
if (ret < 0) {
dev_err(di->dev, "error reading flags\n");
return 0;
}
if ((flags & (1 << BQ275X0_FLAGS_CHG)) != 0) {
dev_dbg(di->dev, "negative current!\n");
return -curr;
}*/
return curr;
}
EXPORT_SYMBOL(bq275x0_battery_current);
/*
* Return the battery Relative State-of-Charge
* Or < 0 if something fails.
*/
int bq275x0_battery_soc(void)
{
int ret;
u16 soc = 0;
ret = bq275x0_read(di, BQ275X0_CMD_SOC, (u8*)&soc, sizeof(s16));
if (ret) {
dev_err(di->dev, "error reading relative State-of-Charge\n");
return ret;
}
return soc;
}
EXPORT_SYMBOL(bq275x0_battery_soc);
/*
* Return the battery health
*/
int bq275x0_battery_health(void)
{
if (!di->present)
return POWER_SUPPLY_HEALTH_UNKNOWN;
if (!(di->chg_inh_temp_h > di->temp_C))
return POWER_SUPPLY_HEALTH_OVERHEAT;
if (!(di->chg_inh_temp_l < di->temp_C))
return POWER_SUPPLY_HEALTH_COLD;
return POWER_SUPPLY_HEALTH_GOOD;
}
EXPORT_SYMBOL(bq275x0_battery_health);
int bq275x0_battery_fw_version(void)
{
int ret;
u16 fw_version = 0;
ret = bq275x0_battery_control_command(BQ275X0_CNTLDATA_FW_VERSION,
(u8*)&fw_version,
sizeof(u16)
);
if (ret) {
dev_err(di->dev, "error reading firmware version\n");
return ret;
}
return fw_version;
}
EXPORT_SYMBOL(bq275x0_battery_fw_version);
int bq275x0_battery_device_type(void)
{
int ret;
u16 device_type;
ret = bq275x0_battery_control_command(BQ275X0_CNTLDATA_DEVICE_TYPE,
(u8*)&device_type,
sizeof(u16)
);
if (ret) {
dev_err(di->dev, "error reading firmware version\n");
return ret;
}
return device_type;
}
EXPORT_SYMBOL(bq275x0_battery_device_type);
int bq275x0_battery_IT_enable(void)
{
int ret;
ret = bq275x0_battery_control_command(BQ275X0_CNTLDATA_IT_ENABLE,
NULL,
0
);
if (ret) {
dev_err(di->dev, "error IT Enable\n");
return ret;
}
dev_info(di->dev, "End Gauge IT Enable\n");
return ret;
}
EXPORT_SYMBOL(bq275x0_battery_IT_enable);
int bq275x0_battery_reset(void)
{
int ret;
ret = bq275x0_battery_control_command(BQ275X0_CNTLDATA_RESET,
NULL,
0
);
if (ret) {
dev_err(di->dev, "error reset\n");
return ret;
}
dev_info(di->dev, "End Gauge RESET\n");
return ret;
}
EXPORT_SYMBOL(bq275x0_battery_reset);
int bq275x0_battery_sealed(void)
{
int ret;
ret = bq275x0_battery_control_command(BQ275X0_CNTLDATA_SEALED,
NULL,
0
);
if (ret) {
dev_err(di->dev, "error sealed\n");
return ret;
}
dev_info(di->dev, "End Gauge SEALED\n");
return ret;
}
EXPORT_SYMBOL(bq275x0_battery_sealed);
static int bq275x0_battery_manufacturer_info(char* buf, u8 offset)
{
int ret = 0;
ret = bq275x0_battery_access_data_flash(57,
offset,
(u8*)buf,
32,
false
);
if (ret) {
dev_err(di->dev, "error reading operation_configuration\n");
}
return ret;
}
int bq275x0_battery_enter_rom_mode(void)
{
int ret = 0;
ret = bq275x0_battery_control_command(BQ275X0_CNTLDATA_ROM_MODE,
NULL,
0
);
if (ret) {
dev_err(di->dev, "failed to place bq275x0 into ROM MODE\n");
}
return ret;
}
EXPORT_SYMBOL(bq275x0_battery_enter_rom_mode);
#if 0
static int bq275x0_battery_application_status(void)
{
int ret;
u16 application_status;
ret = bq275x0_read(di,
BQ275X0_EXT_CMD_APPSTAT,
(u8*)&application_status,
sizeof(application_status)
);
if (ret) {
dev_err(di->dev, "error reading application status\n");
return ret;
}
return application_status;
}
static int bq275x0_battery_operation_configuration(void)
{
int ret;
u16 operation_configuration;
ret = bq275x0_battery_access_data_flash(64,
0,
(u8*)&operation_configuration,
sizeof(operation_configuration),
false
);
if (ret) {
dev_err(di->dev, "error reading operation_configuration\n");
return ret;
}
return operation_configuration;
}
#endif
static int bq275x0_battery_control_status(void)
{
int ret;
u16 control_status = 0;
ret = bq275x0_battery_control_command(BQ275X0_CNTLDATA_CONTROL_STATUS,
(u8*)&control_status,
sizeof(u16)
);
if (ret) {
dev_err(di->dev, "error reading control status\n");
return ret;
}
return control_status;
};
static int bq275x0_battery_snooze_mode(bool set)
{
int ret;
u16 control_status = 0;
if (set)
ret = bq275x0_battery_control_command(BQ275X0_CNTLDATA_SET_SLEEP_PLUS,
NULL,
0
);
else
ret = bq275x0_battery_control_command( BQ275X0_CNTLDATA_CLEAR_SLEEP_PLUS,
NULL,
0
);
if (ret) {
dev_err(di->dev, "error reading firmware version\n");
return ret;
}
control_status = bq275x0_battery_control_status();
if (set) {
return !(control_status & (1 << BQ275X0_CNTLSTATUS_SNOOZE));
} else {
return control_status & (1 << BQ275X0_CNTLSTATUS_SNOOZE);
}
return ret;
}
static int bq275x0_battery_charge_inhibit_subclass(void)
{
int ret;
//s16 temp_hys;
ret = bq275x0_battery_access_data_flash(32,
0,
(u8*)&di->chg_inh_temp_l,
sizeof(s16),
false
);
if (ret) {;
dev_err(di->dev, "error reading charge inhibit temp low\n");
return ret;
}
ret = bq275x0_battery_access_data_flash(32,
2,
(u8*)&di->chg_inh_temp_h,
sizeof(s16),
false
);
if (ret) {
dev_err(di->dev, "error reading charge inhibit temp high\n");
return ret;
}
/*ret = bq275x0_battery_access_data_flash(32,
4,
(u8*)&temp_hys,
sizeof(temp_hys),
false
);
if (ret) {
dev_err(di->dev, "error reading operation_configuration\n");
return ret;
}*/
bq275x0_endian_adjust((u8*)&di->chg_inh_temp_l, sizeof(u16));
bq275x0_endian_adjust((u8*)&di->chg_inh_temp_h, sizeof(u16));
//bq275x0_endian_adjust((u8*)&temp_hys, sizeof(temp_hys));
return 0;
}
#define to_bq275x0_device_info(x) container_of((x), \
struct bq275x0_device_info, bat);
static int bq275x0_battery_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct bq275x0_device_info *di = to_bq275x0_device_info(psy);
switch (psp) {
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = di->voltage_uV * 1000;
break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = di->present;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
val->intval = di->current_uA;
break;
case POWER_SUPPLY_PROP_CAPACITY:
val->intval = di->charge_rsoc;
break;
case POWER_SUPPLY_PROP_TEMP:
val->intval = di->temp_C;
break;
case POWER_SUPPLY_PROP_TECHNOLOGY:
val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
break;
case POWER_SUPPLY_PROP_STATUS:
val->intval = msm_batt_get_batt_status();
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = di->health;
break;
default:
return -EINVAL;
}
return 0;
}
static void bq275x0_powersupply_init(struct bq275x0_device_info *di)
{
di->bat.type = POWER_SUPPLY_TYPE_BATTERY;
di->bat.properties = bq275x0_battery_props;
di->bat.num_properties = ARRAY_SIZE(bq275x0_battery_props);
di->bat.get_property = bq275x0_battery_get_property;
di->bat.external_power_changed = NULL;
}
static int bq275x0_battery_config_gpio(struct bq275x0_device_info *di)
{
#ifndef CONFIG_FIH_FTM_BATTERY_CHARGING
struct pm8058_gpio gpio_configuration = {
.direction = PM_GPIO_DIR_IN,
.pull = PM_GPIO_PULL_NO,
.vin_sel = 2,
.out_strength = PM_GPIO_STRENGTH_NO,
.function = PM_GPIO_FUNC_NORMAL,
.inv_int_pol = 0,
};
int rc = 0;
printk(KERN_INFO "%s\n", __func__);
rc = pm8058_gpio_config(di->pmic_BATGD, &gpio_configuration);
if (rc < 0) {
dev_err(&di->client->dev, "%s: gpio %d configured failed\n", __func__, di->pmic_BATGD);
return rc;
} else {
rc = gpio_request(di->pmic_BATGD + NR_GPIO_IRQS, "BAT_GD");
if (rc < 0) {
dev_err(&di->client->dev, "%s: gpio %d requested failed\n", __func__, di->pmic_BATGD + NR_GPIO_IRQS);
return rc;
} else {
rc = gpio_direction_input(di->pmic_BATGD + NR_GPIO_IRQS);
if (rc < 0) {
dev_err(&di->client->dev, "%s: set gpio %d direction failed\n", __func__, di->pmic_BATGD + NR_GPIO_IRQS);
return rc;
}
}
}
rc = pm8058_gpio_config(di->pmic_BATLOW, &gpio_configuration);
if (rc < 0) {
dev_err(&di->client->dev, "%s: gpio %d configured failed\n", __func__, di->pmic_BATLOW);
return rc;
} else {
rc = gpio_request(di->pmic_BATLOW + NR_GPIO_IRQS, "BAT_LOW");
if (rc < 0) {
dev_err(&di->client->dev, "%s: gpio %d requested failed\n", __func__, di->pmic_BATLOW + NR_GPIO_IRQS);
return rc;
} else {
rc = gpio_direction_input(di->pmic_BATLOW + NR_GPIO_IRQS);
if (rc < 0) {
dev_err(&di->client->dev, "%s: set gpio %d direction failed\n", __func__, di->pmic_BATLOW + NR_GPIO_IRQS);
return rc;
}
}
}
return rc;
#else /*CONFIG_FIH_FTM_BATTERY_CHARGING*/
return 0;
#endif
}
static void bq275x0_battery_release_gpio(struct bq275x0_device_info *di)
{
gpio_free(di->pmic_BATGD + NR_GPIO_IRQS);
gpio_free(di->pmic_BATLOW + NR_GPIO_IRQS);
}
static void bq275x0_battery_BATGD(struct work_struct *work)
{
struct bq275x0_device_info *di = container_of(work, struct bq275x0_device_info, bq275x0_BATGD);
u16 flags = bq275x0_battery_flags();
bool current_chg_inh;
bool gpio_val = (bool)gpio_get_value(di->pmic_BATGD);
dev_info(&di->client->dev, "%s: BAT_GD %d, flags 0x%02x\n", __func__, gpio_val, flags);
di->present = flags & (0x1 << BQ275X0_FLAGS_BAT_DET); /* Battery Detection Flag */
if (!di->present) {
dev_err(&di->client->dev, "%s: the battery is removed\n", __func__);
power_supply_changed(&di->bat);
}
current_chg_inh = flags & (0x1 << BQ275X0_FLAGS_CHG_INH); /* Charge Inhibit Flag */
if (current_chg_inh != di->chg_inh) {
msm_batt_OT_protection();
di->chg_inh = current_chg_inh;
}
}
static void bq275x0_battery_BATLOW(struct work_struct *work)
{
struct bq275x0_device_info *di = container_of(work, struct bq275x0_device_info, bq275x0_BATLOW);
bool gpio_val = (bool)gpio_get_value(di->pmic_BATLOW);
dev_info(&di->client->dev, "%s: BAT_LOW %d\n", __func__, gpio_val);
if (gpio_val) {
} else {
}
}
static irqreturn_t bq275x0_battery_irqhandler(int irq, void *dev_id)
{
struct bq275x0_device_info *di = (struct bq275x0_device_info *) dev_id;
if (di->dev_ready) {
if (PM8058_GPIO_IRQ(PMIC8058_IRQ_BASE, di->pmic_BATGD) == irq) {
schedule_work(&di->bq275x0_BATGD);
} else if (PM8058_GPIO_IRQ(PMIC8058_IRQ_BASE, di->pmic_BATLOW) == irq) {
schedule_work(&di->bq275x0_BATLOW);
}
}
return IRQ_HANDLED;
}
static int bq275x0_battery_irqsetup(struct bq275x0_device_info *di)
{
int rc;
rc = request_irq(PM8058_GPIO_IRQ(PMIC8058_IRQ_BASE, di->pmic_BATGD), &bq275x0_battery_irqhandler,
(IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING),
"bq275x0-BATGD", di);
if (rc < 0) {
dev_err(&di->client->dev,
"Could not register for bq275x0_battery interrupt %d"
"(rc = %d)\n", di->pmic_BATGD, rc);
rc = -EIO;
}
rc = request_irq(PM8058_GPIO_IRQ(PMIC8058_IRQ_BASE, di->pmic_BATLOW), &bq275x0_battery_irqhandler,
(IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING),
"bq275x0-BATLOW", di);
if (rc < 0) {
dev_err(&di->client->dev,
"Could not register for bq275x0_battery interrupt %d"
"(rc = %d)\n", di->pmic_BATLOW, rc);
rc = -EIO;
}
return rc;
}
static void bq275x0_battery_free_irq(struct bq275x0_device_info *di)
{
free_irq(PM8058_GPIO_IRQ(PMIC8058_IRQ_BASE, di->pmic_BATGD), di);
free_irq(PM8058_GPIO_IRQ(PMIC8058_IRQ_BASE, di->pmic_BATLOW), di);
}
static void bq275x0_battery_update_batt_status(void)
{
int flags = bq275x0_battery_flags();
if (flags & (0x1 << BQ275X0_FLAGS_FC)) /* Fully Charged Flag */
msm_batt_notify_battery_full();
di->voltage_uV = bq275x0_battery_voltage();
di->charge_rsoc = bq275x0_battery_soc();
di->current_uA = bq275x0_battery_current();
di->temp_C = bq275x0_battery_temperature();
di->health = bq275x0_battery_health();
}
static void bq275x0_battery_update(struct work_struct *work)
{
bq275x0_battery_update_batt_status();
power_supply_changed(&di->bat);
mod_timer(&di->polling_timer,
jiffies + msecs_to_jiffies(di->polling_interval));
}
#ifdef CONFIG_FIH_FTM_BATTERY_CHARGING
enum {
FTM_CHARGING_SET_CHARGING_STATUS,
FTM_CHARGING_BACKUPBATTERY_ADC,
};
struct manufacturer_info g_manufacturer_info;
static u16 g_device_type = 0;
static int g_capacity = 0;
static int g_voltage = 0;
static int g_temp = 0;
static int g_family_code= 0;
static enum _battery_info_type_ g_current_cmd = 0;
static int g_smem_error = -1;
static int g_bb_voltage = -1;
static int g_charging_on= 0;
extern int proc_comm_config_coin_cell(int vset, int *voltage/*, int rset*/);
extern int proc_comm_config_chg_current(bool on, int curr);
static ssize_t bq275x0_battery_ftm_battery_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
int cmd = 0;
sscanf(buf, "%d", &cmd);
dev_info(dev, "%s: COMMAND: %d\n", __func__, cmd);
g_current_cmd = cmd;
switch (cmd) {
case BATT_CAPACITY_INFO:
g_capacity = bq275x0_battery_soc();
break;
case BATT_VOLTAGE_INFO:
g_voltage = bq275x0_battery_voltage();
break;
case BATT_TEMPERATURE_INFO:
g_temp = bq275x0_battery_temperature();
break;
case BATT_FAMILY_CODE:
g_family_code = bq275x0_battery_fw_version();
break;
case BATT_GET_MANUFACTURER_INFO:
bq275x0_battery_manufacturer_info((u8*)&g_manufacturer_info, 0); /* block A */
bq275x0_endian_adjust(g_manufacturer_info.date, 4);
break;
case BATT_GET_DEVICE_TYPE:
g_device_type = bq275x0_battery_device_type();
break;
default:
break;
};
return count;
}
static ssize_t bq275x0_battery_ftm_battery_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
char project_name[7];
switch (g_current_cmd) {
case BATT_CAPACITY_INFO: // 0x06 RARC - Remaining Active Relative Capacity
return sprintf(buf, "%d\n", g_capacity);
case BATT_VOLTAGE_INFO: // 0x0c Voltage MSB
return sprintf(buf, "%d\n", g_voltage);
case BATT_TEMPERATURE_INFO: // 0x0a Temperature MSB
return sprintf(buf, "%d\n", g_temp);
case BATT_FAMILY_CODE: // 0x33
return sprintf(buf, "%x\n", g_family_code);
case BATT_GET_MANUFACTURER_INFO:
strncpy(project_name, g_manufacturer_info.prj_name, 6);
project_name[6] = '\0';
return sprintf(buf, "%02x-%s-%08x-%02x%02x-%02x\n",
g_manufacturer_info.dfi_ver,
project_name,
*((u32*)g_manufacturer_info.date),
g_manufacturer_info.other[0],
g_manufacturer_info.other[1],
g_manufacturer_info.other[2]
);
case BATT_GET_DEVICE_TYPE:
return sprintf(buf, "%x\n", g_device_type);
default:
return 0;
};
return 0;
}
static ssize_t bq275x0_battery_ftm_charging_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
int cmd = 0;
int data[3] = {0, 0, 0};
sscanf(buf, "%d %d %d %d", &cmd, &data[0], &data[1], &data[2]);
dev_info(dev, "%s: COMMAND: %d data1 = %d data2 = %d\n", __func__, cmd, data[0], data[1]);
switch (cmd) {
case FTM_CHARGING_SET_CHARGING_STATUS:
if (data[2] == 1) {
g_charging_on = data[0];
}
g_smem_error = proc_comm_config_chg_current((g_charging_on ? true : false), data[1]);
break;
case FTM_CHARGING_BACKUPBATTERY_ADC:
g_smem_error = proc_comm_config_coin_cell(2, &g_bb_voltage);
break;
}
return count;
}
static ssize_t bq275x0_battery_ftm_charging_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%d %d\n", g_bb_voltage, g_smem_error);
}
static DEVICE_ATTR(ftm_battery, 0644, bq275x0_battery_ftm_battery_show, bq275x0_battery_ftm_battery_store);
static DEVICE_ATTR(ftm_charging, 0644, bq275x0_battery_ftm_charging_show, bq275x0_battery_ftm_charging_store);
#endif
static void bq275x0_battery_polling_timer_func(unsigned long unused)
{
schedule_work(&di->bq275x0_update);
}
#ifdef CONFIG_PM
static int bq275x0_battery_suspend(struct device *dev)
{
return 0;
}
static int bq275x0_battery_resume(struct device *dev)
{
bq275x0_battery_update_batt_status();
power_supply_changed(&di->bat);
return 0;
}
static struct dev_pm_ops bq275x0_battery_pm = {
.suspend = bq275x0_battery_suspend,
.resume = bq275x0_battery_resume,
};
#endif
static int bq275x0_battery_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct bq275x0_platform_data *bq275x0_pd = client->dev.platform_data;
struct manufacturer_info gauge_info;
char project_name[7];
char *name;
int num;
int retval = 0;
/* Get new ID for the new battery device */
retval = idr_pre_get(&battery_id, GFP_KERNEL);
if (retval == 0)
return -ENOMEM;
mutex_lock(&battery_mutex);
retval = idr_get_new(&battery_id, client, &num);
mutex_unlock(&battery_mutex);
if (retval < 0)
return retval;
name = kasprintf(GFP_KERNEL, "bq275x0-%d", num);
if (!name) {
dev_err(&client->dev, "failed to allocate device name\n");
retval = -ENOMEM;
goto batt_failed_1;
}
di = kzalloc(sizeof(*di), GFP_KERNEL);
if (!di) {
dev_err(&client->dev, "failed to allocate device info data\n");
retval = -ENOMEM;
goto batt_failed_2;
}
di->id = num;
di->dev = &client->dev;
di->bat.name = name;
di->client = client;
di->pmic_BATGD = bq275x0_pd->pmic_BATGD;
di->pmic_BATLOW = bq275x0_pd->pmic_BATLOW;
di->dev_ready = false;
di->chg_inh = false;
di->present = 1;