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power: twl4030-madc-battery: Convert to iio consumer.

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Because of added iio error handling private data allocation was converted
to managed to simplify code.

Signed-off-by: Marek Belisko <marek@goldelico.com>
Reviewed-By: Sebastian Reichel <sre@debian.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This commit is contained in:
Marek Belisko 2015-03-10 22:27:22 +01:00 committed by Sebastian Reichel
parent 0db739fa06
commit 7e5e43893d
1 changed files with 61 additions and 35 deletions
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96
drivers/power/twl4030_madc_battery.c
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@ -19,10 +19,14 @@
#include <linux/sort.h> #include <linux/sort.h>
#include <linux/i2c/twl4030-madc.h> #include <linux/i2c/twl4030-madc.h>
#include <linux/power/twl4030_madc_battery.h> #include <linux/power/twl4030_madc_battery.h>
#include <linux/iio/consumer.h>
struct twl4030_madc_battery { struct twl4030_madc_battery {
struct power_supply *psy; struct power_supply *psy;
struct twl4030_madc_bat_platform_data *pdata; struct twl4030_madc_bat_platform_data *pdata;
struct iio_channel *channel_temp;
struct iio_channel *channel_ichg;
struct iio_channel *channel_vbat;
}; };
static enum power_supply_property twl4030_madc_bat_props[] = { static enum power_supply_property twl4030_madc_bat_props[] = {
@ -38,43 +42,34 @@ static enum power_supply_property twl4030_madc_bat_props[] = {
POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
}; };
static int madc_read(int index) static int madc_read(struct iio_channel *channel)
{ {
struct twl4030_madc_request req; int val, err;
int val; err = iio_read_channel_processed(channel, &val);
if (err < 0)
return err;
req.channels = index; return val;
req.method = TWL4030_MADC_SW2;
req.type = TWL4030_MADC_WAIT;
req.do_avg = 0;
req.raw = false;
req.func_cb = NULL;
val = twl4030_madc_conversion(&req);
if (val < 0)
return val;
return req.rbuf[ffs(index) - 1];
} }
static int twl4030_madc_bat_get_charging_status(void) static int twl4030_madc_bat_get_charging_status(struct twl4030_madc_battery *bt)
{ {
return (madc_read(TWL4030_MADC_ICHG) > 0) ? 1 : 0; return (madc_read(bt->channel_ichg) > 0) ? 1 : 0;
} }
static int twl4030_madc_bat_get_voltage(void) static int twl4030_madc_bat_get_voltage(struct twl4030_madc_battery *bt)
{ {
return madc_read(TWL4030_MADC_VBAT); return madc_read(bt->channel_vbat);
} }
static int twl4030_madc_bat_get_current(void) static int twl4030_madc_bat_get_current(struct twl4030_madc_battery *bt)
{ {
return madc_read(TWL4030_MADC_ICHG) * 1000; return madc_read(bt->channel_ichg) * 1000;
} }
static int twl4030_madc_bat_get_temp(void) static int twl4030_madc_bat_get_temp(struct twl4030_madc_battery *bt)
{ {
return madc_read(TWL4030_MADC_BTEMP) * 10; return madc_read(bt->channel_temp) * 10;
} }
static int twl4030_madc_bat_voltscale(struct twl4030_madc_battery *bat, static int twl4030_madc_bat_voltscale(struct twl4030_madc_battery *bat,
@ -84,7 +79,7 @@ static int twl4030_madc_bat_voltscale(struct twl4030_madc_battery *bat,
int i, res = 0; int i, res = 0;
/* choose charging curve */ /* choose charging curve */
if (twl4030_madc_bat_get_charging_status()) if (twl4030_madc_bat_get_charging_status(bat))
calibration = bat->pdata->charging; calibration = bat->pdata->charging;
else else
calibration = bat->pdata->discharging; calibration = bat->pdata->discharging;
@ -118,23 +113,23 @@ static int twl4030_madc_bat_get_property(struct power_supply *psy,
switch (psp) { switch (psp) {
case POWER_SUPPLY_PROP_STATUS: case POWER_SUPPLY_PROP_STATUS:
if (twl4030_madc_bat_voltscale(bat, if (twl4030_madc_bat_voltscale(bat,
twl4030_madc_bat_get_voltage()) > 95) twl4030_madc_bat_get_voltage(bat)) > 95)
val->intval = POWER_SUPPLY_STATUS_FULL; val->intval = POWER_SUPPLY_STATUS_FULL;
else { else {
if (twl4030_madc_bat_get_charging_status()) if (twl4030_madc_bat_get_charging_status(bat))
val->intval = POWER_SUPPLY_STATUS_CHARGING; val->intval = POWER_SUPPLY_STATUS_CHARGING;
else else
val->intval = POWER_SUPPLY_STATUS_DISCHARGING; val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
} }
break; break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW: case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = twl4030_madc_bat_get_voltage() * 1000; val->intval = twl4030_madc_bat_get_voltage(bat) * 1000;
break; break;
case POWER_SUPPLY_PROP_TECHNOLOGY: case POWER_SUPPLY_PROP_TECHNOLOGY:
val->intval = POWER_SUPPLY_TECHNOLOGY_LION; val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
break; break;
case POWER_SUPPLY_PROP_CURRENT_NOW: case POWER_SUPPLY_PROP_CURRENT_NOW:
val->intval = twl4030_madc_bat_get_current(); val->intval = twl4030_madc_bat_get_current(bat);
break; break;
case POWER_SUPPLY_PROP_PRESENT: case POWER_SUPPLY_PROP_PRESENT:
/* assume battery is always present */ /* assume battery is always present */
@ -142,23 +137,23 @@ static int twl4030_madc_bat_get_property(struct power_supply *psy,
break; break;
case POWER_SUPPLY_PROP_CHARGE_NOW: { case POWER_SUPPLY_PROP_CHARGE_NOW: {
int percent = twl4030_madc_bat_voltscale(bat, int percent = twl4030_madc_bat_voltscale(bat,
twl4030_madc_bat_get_voltage()); twl4030_madc_bat_get_voltage(bat));
val->intval = (percent * bat->pdata->capacity) / 100; val->intval = (percent * bat->pdata->capacity) / 100;
break; break;
} }
case POWER_SUPPLY_PROP_CAPACITY: case POWER_SUPPLY_PROP_CAPACITY:
val->intval = twl4030_madc_bat_voltscale(bat, val->intval = twl4030_madc_bat_voltscale(bat,
twl4030_madc_bat_get_voltage()); twl4030_madc_bat_get_voltage(bat));
break; break;
case POWER_SUPPLY_PROP_CHARGE_FULL: case POWER_SUPPLY_PROP_CHARGE_FULL:
val->intval = bat->pdata->capacity; val->intval = bat->pdata->capacity;
break; break;
case POWER_SUPPLY_PROP_TEMP: case POWER_SUPPLY_PROP_TEMP:
val->intval = twl4030_madc_bat_get_temp(); val->intval = twl4030_madc_bat_get_temp(bat);
break; break;
case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW: { case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW: {
int percent = twl4030_madc_bat_voltscale(bat, int percent = twl4030_madc_bat_voltscale(bat,
twl4030_madc_bat_get_voltage()); twl4030_madc_bat_get_voltage(bat));
/* in mAh */ /* in mAh */
int chg = (percent * (bat->pdata->capacity/1000))/100; int chg = (percent * (bat->pdata->capacity/1000))/100;
@ -201,10 +196,29 @@ static int twl4030_madc_battery_probe(struct platform_device *pdev)
struct power_supply_config psy_cfg = {}; struct power_supply_config psy_cfg = {};
int ret = 0; int ret = 0;
twl4030_madc_bat = kzalloc(sizeof(*twl4030_madc_bat), GFP_KERNEL); twl4030_madc_bat = devm_kzalloc(&pdev->dev, sizeof(*twl4030_madc_bat),
GFP_KERNEL);
if (!twl4030_madc_bat) if (!twl4030_madc_bat)
return -ENOMEM; return -ENOMEM;
twl4030_madc_bat->channel_temp = iio_channel_get(&pdev->dev, "temp");
if (IS_ERR(twl4030_madc_bat->channel_temp)) {
ret = PTR_ERR(twl4030_madc_bat->channel_temp);
goto err;
}
twl4030_madc_bat->channel_ichg = iio_channel_get(&pdev->dev, "ichg");
if (IS_ERR(twl4030_madc_bat->channel_ichg)) {
ret = PTR_ERR(twl4030_madc_bat->channel_ichg);
goto err_temp;
}
twl4030_madc_bat->channel_vbat = iio_channel_get(&pdev->dev, "vbat");
if (IS_ERR(twl4030_madc_bat->channel_vbat)) {
ret = PTR_ERR(twl4030_madc_bat->channel_vbat);
goto err_ichg;
}
/* sort charging and discharging calibration data */ /* sort charging and discharging calibration data */
sort(pdata->charging, pdata->charging_size, sort(pdata->charging, pdata->charging_size,
sizeof(struct twl4030_madc_bat_calibration), sizeof(struct twl4030_madc_bat_calibration),
@ -221,9 +235,18 @@ static int twl4030_madc_battery_probe(struct platform_device *pdev)
&psy_cfg); &psy_cfg);
if (IS_ERR(twl4030_madc_bat->psy)) { if (IS_ERR(twl4030_madc_bat->psy)) {
ret = PTR_ERR(twl4030_madc_bat->psy); ret = PTR_ERR(twl4030_madc_bat->psy);
kfree(twl4030_madc_bat); goto err_vbat;
} }
return 0;
err_vbat:
iio_channel_release(twl4030_madc_bat->channel_vbat);
err_ichg:
iio_channel_release(twl4030_madc_bat->channel_ichg);
err_temp:
iio_channel_release(twl4030_madc_bat->channel_temp);
err:
return ret; return ret;
} }
@ -232,7 +255,10 @@ static int twl4030_madc_battery_remove(struct platform_device *pdev)
struct twl4030_madc_battery *bat = platform_get_drvdata(pdev); struct twl4030_madc_battery *bat = platform_get_drvdata(pdev);
power_supply_unregister(bat->psy); power_supply_unregister(bat->psy);
kfree(bat);
iio_channel_release(bat->channel_vbat);
iio_channel_release(bat->channel_ichg);
iio_channel_release(bat->channel_temp);
return 0; return 0;
} }