Merge git://git.infradead.org/battery-2.6
* git://git.infradead.org/battery-2.6: power_supply: bq27x00: fix voltage and current units power_supply: bq27x00: add status and time properties power_supply: bq27x00: add BQ27500 support power_supply: bq27x00: fix temperature conversion power_supply: bq27x00: remove unused struct fields power_supply: bq27x00: remove double endian swap da9030_battery: fix spelling in comment wm97xx_battery: Clean up some warnings
This commit is contained in:
Linus Torvalds
commit
1fae4cfb97
4 changed files with 138 additions and 49 deletions
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@ -98,10 +98,10 @@ config BATTERY_WM97XX
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Say Y to enable support for battery measured by WM97xx aux port.
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config BATTERY_BQ27x00
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tristate "BQ27200 battery driver"
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tristate "BQ27x00 battery driver"
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depends on I2C
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help
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Say Y here to enable support for batteries with BQ27200(I2C) chip.
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Say Y here to enable support for batteries with BQ27x00 (I2C) chips.
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config BATTERY_DA9030
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tristate "DA9030 battery driver"
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@ -26,13 +26,22 @@
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#include <linux/i2c.h>
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#include <asm/unaligned.h>
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#define DRIVER_VERSION "1.0.0"
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#define DRIVER_VERSION "1.1.0"
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#define BQ27x00_REG_TEMP 0x06
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#define BQ27x00_REG_VOLT 0x08
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#define BQ27x00_REG_RSOC 0x0B /* Relative State-of-Charge */
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#define BQ27x00_REG_AI 0x14
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#define BQ27x00_REG_FLAGS 0x0A
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#define BQ27x00_REG_TTE 0x16
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#define BQ27x00_REG_TTF 0x18
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#define BQ27x00_REG_TTECP 0x26
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#define BQ27000_REG_RSOC 0x0B /* Relative State-of-Charge */
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#define BQ27000_FLAG_CHGS BIT(7)
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#define BQ27500_REG_SOC 0x2c
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#define BQ27500_FLAG_DSC BIT(0)
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#define BQ27500_FLAG_FC BIT(9)
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/* If the system has several batteries we need a different name for each
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* of them...
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@ -46,25 +55,28 @@ struct bq27x00_access_methods {
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struct bq27x00_device_info *di);
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};
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enum bq27x00_chip { BQ27000, BQ27500 };
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struct bq27x00_device_info {
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struct device *dev;
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int id;
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int voltage_uV;
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int current_uA;
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int temp_C;
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int charge_rsoc;
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struct bq27x00_access_methods *bus;
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struct power_supply bat;
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enum bq27x00_chip chip;
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struct i2c_client *client;
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};
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static enum power_supply_property bq27x00_battery_props[] = {
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POWER_SUPPLY_PROP_STATUS,
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POWER_SUPPLY_PROP_PRESENT,
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POWER_SUPPLY_PROP_VOLTAGE_NOW,
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POWER_SUPPLY_PROP_CURRENT_NOW,
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POWER_SUPPLY_PROP_CAPACITY,
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POWER_SUPPLY_PROP_TEMP,
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POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
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POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
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POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
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};
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/*
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@ -74,16 +86,11 @@ static enum power_supply_property bq27x00_battery_props[] = {
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static int bq27x00_read(u8 reg, int *rt_value, int b_single,
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struct bq27x00_device_info *di)
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{
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int ret;
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ret = di->bus->read(reg, rt_value, b_single, di);
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*rt_value = be16_to_cpu(*rt_value);
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return ret;
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return di->bus->read(reg, rt_value, b_single, di);
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}
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/*
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* Return the battery temperature in Celsius degrees
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* Return the battery temperature in tenths of degree Celsius
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* Or < 0 if something fails.
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*/
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static int bq27x00_battery_temperature(struct bq27x00_device_info *di)
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@ -97,7 +104,10 @@ static int bq27x00_battery_temperature(struct bq27x00_device_info *di)
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return ret;
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}
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return (temp >> 2) - 273;
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if (di->chip == BQ27500)
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return temp - 2731;
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else
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return ((temp >> 2) - 273) * 10;
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}
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/*
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@ -115,7 +125,7 @@ static int bq27x00_battery_voltage(struct bq27x00_device_info *di)
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return ret;
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}
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return volt;
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return volt * 1000;
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}
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/*
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@ -134,16 +144,23 @@ static int bq27x00_battery_current(struct bq27x00_device_info *di)
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dev_err(di->dev, "error reading current\n");
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return 0;
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}
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ret = bq27x00_read(BQ27x00_REG_FLAGS, &flags, 0, di);
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if (ret < 0) {
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dev_err(di->dev, "error reading flags\n");
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return 0;
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if (di->chip == BQ27500) {
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/* bq27500 returns signed value */
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curr = (int)(s16)curr;
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} else {
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ret = bq27x00_read(BQ27x00_REG_FLAGS, &flags, 0, di);
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if (ret < 0) {
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dev_err(di->dev, "error reading flags\n");
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return 0;
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}
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if (flags & BQ27000_FLAG_CHGS) {
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dev_dbg(di->dev, "negative current!\n");
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curr = -curr;
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}
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}
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if ((flags & (1 << 7)) != 0) {
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dev_dbg(di->dev, "negative current!\n");
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return -curr;
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}
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return curr;
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return curr * 1000;
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}
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/*
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@ -155,13 +172,70 @@ static int bq27x00_battery_rsoc(struct bq27x00_device_info *di)
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int ret;
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int rsoc = 0;
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ret = bq27x00_read(BQ27x00_REG_RSOC, &rsoc, 1, di);
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if (di->chip == BQ27500)
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ret = bq27x00_read(BQ27500_REG_SOC, &rsoc, 0, di);
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else
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ret = bq27x00_read(BQ27000_REG_RSOC, &rsoc, 1, di);
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if (ret) {
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dev_err(di->dev, "error reading relative State-of-Charge\n");
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return ret;
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}
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return rsoc >> 8;
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return rsoc;
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}
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static int bq27x00_battery_status(struct bq27x00_device_info *di,
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union power_supply_propval *val)
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{
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int flags = 0;
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int status;
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int ret;
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ret = bq27x00_read(BQ27x00_REG_FLAGS, &flags, 0, di);
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if (ret < 0) {
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dev_err(di->dev, "error reading flags\n");
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return ret;
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}
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if (di->chip == BQ27500) {
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if (flags & BQ27500_FLAG_FC)
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status = POWER_SUPPLY_STATUS_FULL;
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else if (flags & BQ27500_FLAG_DSC)
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status = POWER_SUPPLY_STATUS_DISCHARGING;
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else
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status = POWER_SUPPLY_STATUS_CHARGING;
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} else {
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if (flags & BQ27000_FLAG_CHGS)
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status = POWER_SUPPLY_STATUS_CHARGING;
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else
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status = POWER_SUPPLY_STATUS_DISCHARGING;
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}
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val->intval = status;
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return 0;
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}
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/*
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* Read a time register.
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* Return < 0 if something fails.
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*/
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static int bq27x00_battery_time(struct bq27x00_device_info *di, int reg,
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union power_supply_propval *val)
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{
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int tval = 0;
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int ret;
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ret = bq27x00_read(reg, &tval, 0, di);
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if (ret) {
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dev_err(di->dev, "error reading register %02x\n", reg);
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return ret;
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}
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if (tval == 65535)
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return -ENODATA;
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val->intval = tval * 60;
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return 0;
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}
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#define to_bq27x00_device_info(x) container_of((x), \
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@ -171,9 +245,13 @@ static int bq27x00_battery_get_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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int ret = 0;
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struct bq27x00_device_info *di = to_bq27x00_device_info(psy);
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switch (psp) {
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case POWER_SUPPLY_PROP_STATUS:
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ret = bq27x00_battery_status(di, val);
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break;
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case POWER_SUPPLY_PROP_VOLTAGE_NOW:
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case POWER_SUPPLY_PROP_PRESENT:
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val->intval = bq27x00_battery_voltage(di);
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@ -189,11 +267,20 @@ static int bq27x00_battery_get_property(struct power_supply *psy,
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case POWER_SUPPLY_PROP_TEMP:
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val->intval = bq27x00_battery_temperature(di);
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break;
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case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
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ret = bq27x00_battery_time(di, BQ27x00_REG_TTE, val);
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break;
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case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
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ret = bq27x00_battery_time(di, BQ27x00_REG_TTECP, val);
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break;
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case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
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ret = bq27x00_battery_time(di, BQ27x00_REG_TTF, val);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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return ret;
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}
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static void bq27x00_powersupply_init(struct bq27x00_device_info *di)
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@ -206,10 +293,10 @@ static void bq27x00_powersupply_init(struct bq27x00_device_info *di)
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}
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/*
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* BQ27200 specific code
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* i2c specific code
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*/
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static int bq27200_read(u8 reg, int *rt_value, int b_single,
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static int bq27x00_read_i2c(u8 reg, int *rt_value, int b_single,
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struct bq27x00_device_info *di)
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{
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struct i2c_client *client = di->client;
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@ -238,7 +325,7 @@ static int bq27200_read(u8 reg, int *rt_value, int b_single,
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err = i2c_transfer(client->adapter, msg, 1);
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if (err >= 0) {
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if (!b_single)
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*rt_value = get_unaligned_be16(data);
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*rt_value = get_unaligned_le16(data);
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else
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*rt_value = data[0];
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@ -248,7 +335,7 @@ static int bq27200_read(u8 reg, int *rt_value, int b_single,
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return err;
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}
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static int bq27200_battery_probe(struct i2c_client *client,
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static int bq27x00_battery_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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char *name;
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@ -267,7 +354,7 @@ static int bq27200_battery_probe(struct i2c_client *client,
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if (retval < 0)
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return retval;
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name = kasprintf(GFP_KERNEL, "bq27200-%d", num);
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name = kasprintf(GFP_KERNEL, "%s-%d", id->name, num);
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if (!name) {
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dev_err(&client->dev, "failed to allocate device name\n");
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retval = -ENOMEM;
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@ -281,6 +368,7 @@ static int bq27200_battery_probe(struct i2c_client *client,
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goto batt_failed_2;
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}
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di->id = num;
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di->chip = id->driver_data;
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bus = kzalloc(sizeof(*bus), GFP_KERNEL);
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if (!bus) {
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@ -293,7 +381,7 @@ static int bq27200_battery_probe(struct i2c_client *client,
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i2c_set_clientdata(client, di);
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di->dev = &client->dev;
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di->bat.name = name;
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bus->read = &bq27200_read;
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bus->read = &bq27x00_read_i2c;
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di->bus = bus;
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di->client = client;
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@ -323,7 +411,7 @@ static int bq27200_battery_probe(struct i2c_client *client,
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return retval;
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}
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static int bq27200_battery_remove(struct i2c_client *client)
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static int bq27x00_battery_remove(struct i2c_client *client)
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{
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struct bq27x00_device_info *di = i2c_get_clientdata(client);
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@ -344,27 +432,28 @@ static int bq27200_battery_remove(struct i2c_client *client)
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* Module stuff
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*/
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static const struct i2c_device_id bq27200_id[] = {
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{ "bq27200", 0 },
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static const struct i2c_device_id bq27x00_id[] = {
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{ "bq27200", BQ27000 }, /* bq27200 is same as bq27000, but with i2c */
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{ "bq27500", BQ27500 },
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{},
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};
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static struct i2c_driver bq27200_battery_driver = {
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static struct i2c_driver bq27x00_battery_driver = {
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.driver = {
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.name = "bq27200-battery",
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.name = "bq27x00-battery",
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},
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.probe = bq27200_battery_probe,
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.remove = bq27200_battery_remove,
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.id_table = bq27200_id,
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.probe = bq27x00_battery_probe,
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.remove = bq27x00_battery_remove,
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.id_table = bq27x00_id,
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};
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static int __init bq27x00_battery_init(void)
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{
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int ret;
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ret = i2c_add_driver(&bq27200_battery_driver);
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ret = i2c_add_driver(&bq27x00_battery_driver);
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if (ret)
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printk(KERN_ERR "Unable to register BQ27200 driver\n");
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printk(KERN_ERR "Unable to register BQ27x00 driver\n");
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return ret;
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}
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@ -372,7 +461,7 @@ module_init(bq27x00_battery_init);
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static void __exit bq27x00_battery_exit(void)
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{
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i2c_del_driver(&bq27200_battery_driver);
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i2c_del_driver(&bq27x00_battery_driver);
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}
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module_exit(bq27x00_battery_exit);
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@ -509,7 +509,7 @@ static int da9030_battery_probe(struct platform_device *pdev)
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charger->master = pdev->dev.parent;
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/* 10 seconds between monotor runs unless platfrom defines other
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/* 10 seconds between monitor runs unless platform defines other
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interval */
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charger->interval = msecs_to_jiffies(
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(pdata->batmon_interval ? : 10) * 1000);
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@ -26,7 +26,7 @@
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static DEFINE_MUTEX(bat_lock);
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static struct work_struct bat_work;
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struct mutex work_lock;
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static struct mutex work_lock;
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static int bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
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static struct wm97xx_batt_info *gpdata;
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static enum power_supply_property *prop;
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@ -203,7 +203,7 @@ static int __devinit wm97xx_bat_probe(struct platform_device *dev)
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goto err2;
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ret = request_irq(gpio_to_irq(pdata->charge_gpio),
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wm97xx_chrg_irq, IRQF_DISABLED,
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"AC Detect", 0);
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"AC Detect", dev);
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if (ret)
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goto err2;
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props++; /* POWER_SUPPLY_PROP_STATUS */
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