diff options
| author | Eva Rachel Retuya <eraretuya@gmail.com> | 2016-11-01 01:04:32 +0800 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-11-05 16:20:59 +0000 |
| commit | cb8bb16caf42fd4f7eba69ee1889260af6e43ca1 (patch) | |
| tree | 7234b8abe1f9282ad1292176de973f4be28e12ac /drivers/staging/iio/adc/ad7192.c | |
| parent | 3925ff0fcba71a27be14b19b01c0b67efbab0be9 (diff) | |
| download | linux-cb8bb16caf42fd4f7eba69ee1889260af6e43ca1.tar.bz2 | |
staging: iio: ad7192: add DVdd regulator
The AD7190/AD7192/AD7193/AD7195 is supplied with two power sources:
AVdd as analog supply voltage and DVdd as digital supply voltage.
Attempt to fetch and enable the regulator 'dvdd'. Bail out if any error
occurs.
Suggested-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/staging/iio/adc/ad7192.c')
| -rw-r--r-- | drivers/staging/iio/adc/ad7192.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/staging/iio/adc/ad7192.c b/drivers/staging/iio/adc/ad7192.c index 29e32b71f0f7..3f8dc6608fe7 100644 --- a/drivers/staging/iio/adc/ad7192.c +++ b/drivers/staging/iio/adc/ad7192.c @@ -153,6 +153,7 @@ struct ad7192_state { struct regulator *reg; + struct regulator *dvdd; u16 int_vref_mv; u32 mclk; u32 f_order; @@ -642,6 +643,19 @@ static int ad7192_probe(struct spi_device *spi) dev_err(&spi->dev, "Failed to enable specified AVdd supply\n"); return ret; } + + st->dvdd = devm_regulator_get(&spi->dev, "dvdd"); + if (IS_ERR(st->dvdd)) { + ret = PTR_ERR(st->dvdd); + goto error_disable_reg; + } + + ret = regulator_enable(st->dvdd); + if (ret) { + dev_err(&spi->dev, "Failed to enable specified DVdd supply\n"); + goto error_disable_reg; + } + voltage_uv = regulator_get_voltage(st->reg); if (pdata->vref_mv) @@ -677,7 +691,7 @@ static int ad7192_probe(struct spi_device *spi) ret = ad_sd_setup_buffer_and_trigger(indio_dev); if (ret) - goto error_disable_reg; + goto error_disable_dvdd; ret = ad7192_setup(st, pdata); if (ret) @@ -690,6 +704,8 @@ static int ad7192_probe(struct spi_device *spi) error_remove_trigger: ad_sd_cleanup_buffer_and_trigger(indio_dev); +error_disable_dvdd: + regulator_disable(st->dvdd); error_disable_reg: regulator_disable(st->reg); @@ -704,6 +720,7 @@ static int ad7192_remove(struct spi_device *spi) iio_device_unregister(indio_dev); ad_sd_cleanup_buffer_and_trigger(indio_dev); + regulator_disable(st->dvdd); regulator_disable(st->reg); return 0; |