static int lp8788_get_vbatt_adc(struct lp8788_charger *pchg, int *result)
{
struct iio_channel *channel = pchg->chan[LP8788_VBATT];
if (!channel)
return -EINVAL;
return iio_read_channel_processed(channel, result);
}
static int madc_read(struct iio_channel *channel)
{
int val, err;
err = iio_read_channel_processed(channel, &val);
if (err < 0)
return err;
return val;
}
static int read_channel(struct gab *adc_bat, enum power_supply_property psp,
int *result)
{
int ret;
int chan_index;
chan_index = gab_prop_to_chan(psp);
ret = iio_read_channel_processed(adc_bat->channel[chan_index],
result);
if (ret < 0)
pr_err("read channel error\n");
return ret;
}
static int gadc_thermal_get_temp(void *data, int *temp)
{
struct gadc_thermal_info *gti = data;
int val;
int ret;
ret = iio_read_channel_processed(gti->channel, &val);
if (ret < 0) {
dev_err(gti->dev, "IIO channel read failed %d\n", ret);
return ret;
}
*temp = gadc_thermal_adc_to_temp(gti, val);
return 0;
}
/*
* Assumes that IIO and hwmon operate in the same base units.
* This is supposed to be true, but needs verification for
* new channel types.
*/
static ssize_t iio_hwmon_read_val(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int result;
int ret;
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
struct iio_hwmon_state *state = dev_get_drvdata(dev);
ret = iio_read_channel_processed(&state->channels[sattr->index],
&result);
if (ret < 0)
return ret;
return sprintf(buf, "%d\n", result);
}
static int lp8788_get_battery_temperature(struct lp8788_charger *pchg,
union power_supply_propval *val)
{
struct iio_channel *channel = pchg->chan[LP8788_BATT_TEMP];
int result;
int ret;
if (!channel)
return -EINVAL;
ret = iio_read_channel_processed(channel, &result);
if (ret < 0)
return -EINVAL;
/* unit: 0.1 'C */
val->intval = result * 10;
return 0;
}
static u32 read_state(struct xgold_jack *jack)
{
int volt, ret;
ret = iio_read_channel_processed(jack->iio_client, &volt);
if (ret < 0) {
xgold_err("Unable to read channel volt\n");
return XGOLD_ERROR;
}
xgold_debug("%s: measured voltage %d\n", __func__, volt);
if (volt >= xgold_hs_typemap[HEADSET_INDEX].min_mv &&
volt <= xgold_hs_typemap[HEADSET_INDEX].max_mv)
return XGOLD_HEADSET;
else if (volt >= xgold_hs_typemap[HEADPHONE_INDEX].min_mv &&
volt <= xgold_hs_typemap[HEADPHONE_INDEX].max_mv)
return XGOLD_HEADPHONE;
else if (volt > xgold_hs_typemap[HEADSET_INDEX].max_mv)
return XGOLD_HEADSET_REMOVED;
else
return XGOLD_INVALID;
}
static int axp20x_usb_power_get_property(struct power_supply *psy,
enum power_supply_property psp, union power_supply_propval *val)
{
struct axp20x_usb_power *power = power_supply_get_drvdata(psy);
unsigned int input, v;
int ret;
switch (psp) {
case POWER_SUPPLY_PROP_VOLTAGE_MIN:
ret = regmap_read(power->regmap, AXP20X_VBUS_IPSOUT_MGMT, &v);
if (ret)
return ret;
val->intval = AXP20X_VBUS_VHOLD_uV(v);
return 0;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
if (IS_ENABLED(CONFIG_AXP20X_ADC)) {
ret = iio_read_channel_processed(power->vbus_v,
&val->intval);
if (ret)
return ret;
/*
* IIO framework gives mV but Power Supply framework
* gives uV.
*/
val->intval *= 1000;
return 0;
}
ret = axp20x_read_variable_width(power->regmap,
AXP20X_VBUS_V_ADC_H, 12);
if (ret < 0)
return ret;
val->intval = ret * 1700; /* 1 step = 1.7 mV */
return 0;
case POWER_SUPPLY_PROP_CURRENT_MAX:
ret = regmap_read(power->regmap, AXP20X_VBUS_IPSOUT_MGMT, &v);
if (ret)
return ret;
switch (v & AXP20X_VBUS_CLIMIT_MASK) {
case AXP20X_VBUC_CLIMIT_100mA:
if (power->axp20x_id == AXP221_ID)
val->intval = -1; /* No 100mA limit */
else
val->intval = 100000;
break;
case AXP20X_VBUC_CLIMIT_500mA:
val->intval = 500000;
break;
case AXP20X_VBUC_CLIMIT_900mA:
val->intval = 900000;
break;
case AXP20X_VBUC_CLIMIT_NONE:
val->intval = -1;
break;
}
return 0;
case POWER_SUPPLY_PROP_CURRENT_NOW:
if (IS_ENABLED(CONFIG_AXP20X_ADC)) {
ret = iio_read_channel_processed(power->vbus_i,
&val->intval);
if (ret)
return ret;
/*
* IIO framework gives mA but Power Supply framework
* gives uA.
*/
val->intval *= 1000;
return 0;
}
ret = axp20x_read_variable_width(power->regmap,
AXP20X_VBUS_I_ADC_H, 12);
if (ret < 0)
return ret;
val->intval = ret * 375; /* 1 step = 0.375 mA */
return 0;
default:
break;
}
/* All the properties below need the input-status reg value */
ret = regmap_read(power->regmap, AXP20X_PWR_INPUT_STATUS, &input);
if (ret)
return ret;
switch (psp) {
case POWER_SUPPLY_PROP_HEALTH:
if (!(input & AXP20X_PWR_STATUS_VBUS_PRESENT)) {
val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
break;
}
val->intval = POWER_SUPPLY_HEALTH_GOOD;
if (power->axp20x_id == AXP202_ID) {
ret = regmap_read(power->regmap,
AXP20X_USB_OTG_STATUS, &v);
if (ret)
return ret;
if (!(v & AXP20X_USB_STATUS_VBUS_VALID))
val->intval =
POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
}
break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = !!(input & AXP20X_PWR_STATUS_VBUS_PRESENT);
break;
case POWER_SUPPLY_PROP_ONLINE:
val->intval = !!(input & AXP20X_PWR_STATUS_VBUS_USED);
break;
default:
return -EINVAL;
}
return 0;
}
