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-rw-r--r--drivers/power/twl4030_madc_battery.c96
1 files changed, 61 insertions, 35 deletions
diff --git a/drivers/power/twl4030_madc_battery.c b/drivers/power/twl4030_madc_battery.c
index 36d3a0e229fa..f4b9257d795c 100644
--- a/drivers/power/twl4030_madc_battery.c
+++ b/drivers/power/twl4030_madc_battery.c
@@ -19,10 +19,14 @@
#include <linux/sort.h>
#include <linux/i2c/twl4030-madc.h>
#include <linux/power/twl4030_madc_battery.h>
+#include <linux/iio/consumer.h>
struct twl4030_madc_battery {
struct power_supply *psy;
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[] = {
@@ -38,43 +42,34 @@ static enum power_supply_property twl4030_madc_bat_props[] = {
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;
+ int val, err;
+ err = iio_read_channel_processed(channel, &val);
+ if (err < 0)
+ return err;
- req.channels = index;
- 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];
+ return val;
}
-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,
@@ -84,7 +79,7 @@ static int twl4030_madc_bat_voltscale(struct twl4030_madc_battery *bat,
int i, res = 0;
/* choose charging curve */
- if (twl4030_madc_bat_get_charging_status())
+ if (twl4030_madc_bat_get_charging_status(bat))
calibration = bat->pdata->charging;
else
calibration = bat->pdata->discharging;
@@ -118,23 +113,23 @@ static int twl4030_madc_bat_get_property(struct power_supply *psy,
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
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;
else {
- if (twl4030_madc_bat_get_charging_status())
+ if (twl4030_madc_bat_get_charging_status(bat))
val->intval = POWER_SUPPLY_STATUS_CHARGING;
else
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
}
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
- val->intval = twl4030_madc_bat_get_voltage() * 1000;
+ val->intval = twl4030_madc_bat_get_voltage(bat) * 1000;
break;
case POWER_SUPPLY_PROP_TECHNOLOGY:
val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
- val->intval = twl4030_madc_bat_get_current();
+ val->intval = twl4030_madc_bat_get_current(bat);
break;
case POWER_SUPPLY_PROP_PRESENT:
/* assume battery is always present */
@@ -142,23 +137,23 @@ static int twl4030_madc_bat_get_property(struct power_supply *psy,
break;
case POWER_SUPPLY_PROP_CHARGE_NOW: {
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;
break;
}
case POWER_SUPPLY_PROP_CAPACITY:
val->intval = twl4030_madc_bat_voltscale(bat,
- twl4030_madc_bat_get_voltage());
+ twl4030_madc_bat_get_voltage(bat));
break;
case POWER_SUPPLY_PROP_CHARGE_FULL:
val->intval = bat->pdata->capacity;
break;
case POWER_SUPPLY_PROP_TEMP:
- val->intval = twl4030_madc_bat_get_temp();
+ val->intval = twl4030_madc_bat_get_temp(bat);
break;
case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW: {
int percent = twl4030_madc_bat_voltscale(bat,
- twl4030_madc_bat_get_voltage());
+ twl4030_madc_bat_get_voltage(bat));
/* in mAh */
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 = {};
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)
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(pdata->charging, pdata->charging_size,
sizeof(struct twl4030_madc_bat_calibration),
@@ -221,9 +235,18 @@ static int twl4030_madc_battery_probe(struct platform_device *pdev)
&psy_cfg);
if (IS_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;
}
@@ -232,7 +255,10 @@ static int twl4030_madc_battery_remove(struct platform_device *pdev)
struct twl4030_madc_battery *bat = platform_get_drvdata(pdev);
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;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 12:29:33 +0000