[PATCH 08/10] iio: adc: ti-ads8688: use devm_regulator_get_enable_read_voltage()

David Lechner
2024-06-21T22:12:10Z

Use devm_regulator_get_enable_read_voltage() to simplify the code.

Signed-off-by: David Lechner <dlechner@baylibre.com>
---
drivers/iio/adc/ti-ads8688.c | 29 +++++------------------------
1 file changed, 5 insertions(+), 24 deletions(-)

diff --git a/drivers/iio/adc/ti-ads8688.c b/drivers/iio/adc/ti-ads8688.c
index 9440a268a78c..fca3032c59d9 100644
--- a/drivers/iio/adc/ti-ads8688.c
+++ b/drivers/iio/adc/ti-ads8688.c
@@ -65,7 +65,6 @@ struct ads8688_state {
struct mutex lock;
const struct ads8688_chip_info *chip_info;
struct spi_device *spi;
- struct regulator *reg;
unsigned int vref_mv;
enum ads8688_range range[8];
union {
@@ -423,21 +422,11 @@ static int ads8688_probe(struct spi_device *spi)

st = iio_priv(indio_dev);

- st->reg = devm_regulator_get_optional(&spi->dev, "vref");
- if (!IS_ERR(st->reg)) {
- ret = regulator_enable(st->reg);
- if (ret)
- return ret;
-
- ret = regulator_get_voltage(st->reg);
- if (ret < 0)
- goto err_regulator_disable;
+ ret = devm_regulator_get_enable_read_voltage(&spi->dev, "vref");
+ if (ret < 0 && ret != -ENODEV)
+ return ret;

- st->vref_mv = ret / 1000;
- } else {
- /* Use internal reference */
- st->vref_mv = ADS8688_VREF_MV;
- }
+ st->vref_mv = ret == -ENODEV ? ADS8688_VREF_MV : ret / 1000;

st->chip_info = &ads8688_chip_info_tbl[spi_get_device_id(spi)->driver_data];

@@ -460,7 +449,7 @@ static int ads8688_probe(struct spi_device *spi)
ret = iio_triggered_buffer_setup(indio_dev, NULL, ads8688_trigger_handler, NULL);
if (ret < 0) {
dev_err(&spi->dev, "iio triggered buffer setup failed\n");
- goto err_regulator_disable;
+ return ret;
}

ret = iio_device_register(indio_dev);
@@ -472,23 +461,15 @@ static int ads8688_probe(struct spi_device *spi)
err_buffer_cleanup:
iio_triggered_buffer_cleanup(indio_dev);

-err_regulator_disable:
- if (!IS_ERR(st->reg))
- regulator_disable(st->reg);
-
return ret;
}

static void ads8688_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
- struct ads8688_state *st = iio_priv(indio_dev);

iio_device_unregister(indio_dev);
iio_triggered_buffer_cleanup(indio_dev);
-
- if (!IS_ERR(st->reg))
- regulator_disable(st->reg);
}

static const struct spi_device_id ads8688_id[] = {

--
2.45.2