int da9052_adc_manual_read(struct da9052 *da9052, unsigned char channel)
{
int ret;
unsigned short calc_data;
unsigned short data;
unsigned char mux_sel;
if (channel > DA9052_ADC_VBBAT)
return -EINVAL;
mutex_lock(&da9052->auxadc_lock);
/* Channel gets activated on enabling the Conversion bit */
mux_sel = chan_mux[channel] | DA9052_ADC_MAN_MAN_CONV;
ret = da9052_reg_write(da9052, DA9052_ADC_MAN_REG, mux_sel);
if (ret < 0)
goto err;
/* Wait for an interrupt */
if (!wait_for_completion_timeout(&da9052->done,
msecs_to_jiffies(500))) {
dev_err(da9052->dev,
"timeout waiting for ADC conversion interrupt\n");
ret = -ETIMEDOUT;
goto err;
}
ret = da9052_reg_read(da9052, DA9052_ADC_RES_H_REG);
if (ret < 0)
goto err;
calc_data = (unsigned short)ret;
data = calc_data << 2;
ret = da9052_reg_read(da9052, DA9052_ADC_RES_L_REG);
if (ret < 0)
goto err;
calc_data = (unsigned short)(ret & DA9052_ADC_RES_LSB);
data |= calc_data;
ret = data;
err:
mutex_unlock(&da9052->auxadc_lock);
return ret;
}
static int da9052_USB_current_notifier(struct notifier_block *nb,
unsigned long events, void *data)
{
u8 row;
u8 col;
int *current_mA = data;
int ret;
struct da9052_battery *bat = container_of(nb, struct da9052_battery,
nb);
if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING)
return -EPERM;
ret = da9052_reg_read(bat->da9052, DA9052_CHGBUCK_REG);
if (ret & DA9052_CHG_USB_ILIM_MASK)
return -EPERM;
if (bat->da9052->chip_id == DA9052)
row = 0;
else
row = 1;
if (*current_mA < da9052_chg_current_lim[row][0] ||
*current_mA > da9052_chg_current_lim[row][DA9052_CHG_LIM_COLS - 1])
return -EINVAL;
for (col = 0; col <= DA9052_CHG_LIM_COLS - 1 ; col++) {
if (*current_mA <= da9052_chg_current_lim[row][col])
break;
}
return da9052_reg_update(bat->da9052, DA9052_ISET_REG,
DA9052_ISET_USB_MASK, col);
}
int da9052_adc_read_temp(struct da9052 *da9052)
{
int tbat;
tbat = da9052_reg_read(da9052, DA9052_TBAT_RES_REG);
if (tbat <= 0)
return tbat;
/* ARRAY_SIZE check is not needed since TBAT is a 8-bit register */
return tbat_lookup[tbat - 1];
}
static int da9052_rtc_get_alarm_status(struct da9052 *da9052)
{
int ret;
ret = da9052_reg_read(da9052, DA9052_ALARM_Y_REG);
if (ret < 0) {
rtc_err(da9052, "Failed to read ALM: %d\n", ret);
return ret;
}
ret &= DA9052_ALARM_Y_ALARM_ON;
return (ret > 0) ? 1 : 0;
}
static int da9052_rtc_get_alarm_status(struct da9052_rtc *rtc)
{
int ret;
ret = da9052_reg_read(rtc->da9052, DA9052_ALARM_Y_REG);
if (ret < 0) {
rtc_err(rtc, "Failed to read ALM: %d\n", ret);
return ret;
}
return !!(ret&DA9052_ALARM_Y_ALARM_ON);
}
static int da9052_read_chg_current(struct da9052_battery *bat, int *current_mA)
{
int ret;
if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING)
return -EINVAL;
ret = da9052_reg_read(bat->da9052, DA9052_ICHG_AV_REG);
if (ret < 0)
return ret;
*current_mA = ichg_reg_to_mA(ret & DA9052_ICHGAV_ICHGAV);
return 0;
}
static int da9052_dcdc_get_current_limit(struct regulator_dev *rdev)
{
struct da9052_regulator *regulator = rdev_get_drvdata(rdev);
int offset = rdev_get_id(rdev);
int ret, row = 2;
ret = da9052_reg_read(regulator->da9052, DA9052_BUCKA_REG + offset/2);
if (ret < 0)
return ret;
/* Determine the even or odd position of the buck current limit
* register field
*/
if (offset % 2 == 0)
ret = (ret & DA9052_BUCK_ILIM_MASK_EVEN) >> 2;
else
static irqreturn_t da9052_rtc_irq(int irq, void *data)
{
struct da9052_rtc *rtc = data;
int ret;
ret = da9052_reg_read(rtc->da9052, DA9052_ALARM_MI_REG);
if (ret < 0) {
rtc_err(rtc->da9052, "Read error: %d\n", ret);
return IRQ_NONE;
}
if (ret & DA9052_ALARMMI_ALARMTYPE) {
da9052_rtc_enable_alarm(rtc->da9052, 0);
rtc_update_irq(rtc->rtc, 1, RTC_IRQF | RTC_AF);
} else
rtc_update_irq(rtc->rtc, 1, RTC_IRQF | RTC_PF);
return IRQ_HANDLED;
}
