static int da9052_rtc_probe(struct platform_device *pdev)
{
struct da9052_rtc *rtc;
int ret;
rtc = devm_kzalloc(&pdev->dev, sizeof(struct da9052_rtc), GFP_KERNEL);
if (!rtc)
return -ENOMEM;
rtc->da9052 = dev_get_drvdata(pdev->dev.parent);
platform_set_drvdata(pdev, rtc);
ret = da9052_reg_write(rtc->da9052, DA9052_BBAT_CONT_REG, 0xFE);
if (ret < 0) {
rtc_err(rtc,
"Failed to setup RTC battery charging: %d\n", ret);
return ret;
}
ret = da9052_reg_update(rtc->da9052, DA9052_ALARM_Y_REG,
DA9052_ALARM_Y_TICK_ON, 0);
if (ret != 0)
rtc_err(rtc, "Failed to disable TICKS: %d\n", ret);
ret = da9052_request_irq(rtc->da9052, DA9052_IRQ_ALARM, "ALM",
da9052_rtc_irq, rtc);
if (ret != 0) {
rtc_err(rtc, "irq registration failed: %d\n", ret);
return ret;
}
rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
&da9052_rtc_ops, THIS_MODULE);
return PTR_ERR_OR_ZERO(rtc->rtc);
}
static int da9052_set_led_brightness(struct da9052_led *led)
{
u8 val;
int error;
val = (led->brightness & 0x7f) | DA9052_LED_CONT_DIM;
error = da9052_reg_write(led->da9052, led_reg[led->led_index], val);
if (error < 0)
dev_err(led->da9052->dev, "Failed to set led brightness, %d\n",
error);
return error;
}
static int da9052_adjust_wled_brightness(struct da9052_bl *wleds)
{
unsigned char boost_en;
unsigned char i_sink;
int ret;
boost_en = 0x3F;
i_sink = 0xFF;
if (wleds->state == DA9052_WLEDS_OFF) {
boost_en = 0x00;
i_sink = 0x00;
}
ret = da9052_reg_write(wleds->da9052, DA9052_BOOST_REG, boost_en);
if (ret < 0)
return ret;
ret = da9052_reg_write(wleds->da9052, DA9052_LED_CONT_REG, i_sink);
if (ret < 0)
return ret;
ret = da9052_reg_write(wleds->da9052, wled_bank[wleds->led_reg], 0x0);
if (ret < 0)
return ret;
usleep_range(10000, 11000);
if (wleds->brightness) {
ret = da9052_reg_write(wleds->da9052, wled_bank[wleds->led_reg],
wleds->brightness);
if (ret < 0)
return ret;
}
return 0;
}
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;
}
