On 31/10/16 17:04, Eva Rachel Retuya wrote:
> The AD9832/AD9835 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@xxxxxxxxxx>
> Signed-off-by: Eva Rachel Retuya <eraretuya@xxxxxxxxx>
Applied.
Thanks,
Jonathan
> ---
> drivers/staging/iio/frequency/ad9832.c | 33 ++++++++++++++++++++++++---------
> drivers/staging/iio/frequency/ad9832.h | 2 ++
> 2 files changed, 26 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/staging/iio/frequency/ad9832.c b/drivers/staging/iio/frequency/ad9832.c
> index 7d8dc6c..6a5ab02 100644
> --- a/drivers/staging/iio/frequency/ad9832.c
> +++ b/drivers/staging/iio/frequency/ad9832.c
> @@ -222,10 +222,22 @@ static int ad9832_probe(struct spi_device *spi)
> 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;
> + }
> +
> indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
> if (!indio_dev) {
> ret = -ENOMEM;
> - goto error_disable_reg;
> + goto error_disable_dvdd;
> }
> spi_set_drvdata(spi, indio_dev);
> st = iio_priv(indio_dev);
> @@ -280,39 +292,41 @@ static int ad9832_probe(struct spi_device *spi)
> ret = spi_sync(st->spi, &st->msg);
> if (ret) {
> dev_err(&spi->dev, "device init failed\n");
> - goto error_disable_reg;
> + goto error_disable_dvdd;
> }
>
> ret = ad9832_write_frequency(st, AD9832_FREQ0HM, pdata->freq0);
> if (ret)
> - goto error_disable_reg;
> + goto error_disable_dvdd;
>
> ret = ad9832_write_frequency(st, AD9832_FREQ1HM, pdata->freq1);
> if (ret)
> - goto error_disable_reg;
> + goto error_disable_dvdd;
>
> ret = ad9832_write_phase(st, AD9832_PHASE0H, pdata->phase0);
> if (ret)
> - goto error_disable_reg;
> + goto error_disable_dvdd;
>
> ret = ad9832_write_phase(st, AD9832_PHASE1H, pdata->phase1);
> if (ret)
> - goto error_disable_reg;
> + goto error_disable_dvdd;
>
> ret = ad9832_write_phase(st, AD9832_PHASE2H, pdata->phase2);
> if (ret)
> - goto error_disable_reg;
> + goto error_disable_dvdd;
>
> ret = ad9832_write_phase(st, AD9832_PHASE3H, pdata->phase3);
> if (ret)
> - goto error_disable_reg;
> + goto error_disable_dvdd;
>
> ret = iio_device_register(indio_dev);
> if (ret)
> - goto error_disable_reg;
> + goto error_disable_dvdd;
>
> return 0;
>
> +error_disable_dvdd:
> + regulator_disable(st->dvdd);
> error_disable_reg:
> regulator_disable(reg);
>
> @@ -325,6 +339,7 @@ static int ad9832_remove(struct spi_device *spi)
> struct ad9832_state *st = iio_priv(indio_dev);
>
> iio_device_unregister(indio_dev);
> + regulator_disable(st->dvdd);
> regulator_disable(st->reg);
>
> return 0;
> diff --git a/drivers/staging/iio/frequency/ad9832.h b/drivers/staging/iio/frequency/ad9832.h
> index d32323b..eb0e7f2 100644
> --- a/drivers/staging/iio/frequency/ad9832.h
> +++ b/drivers/staging/iio/frequency/ad9832.h
> @@ -59,6 +59,7 @@
> * struct ad9832_state - driver instance specific data
> * @spi: spi_device
> * @reg: supply regulator
> + * @dvdd: supply regulator for the digital section
> * @mclk: external master clock
> * @ctrl_fp: cached frequency/phase control word
> * @ctrl_ss: cached sync/selsrc control word
> @@ -77,6 +78,7 @@
> struct ad9832_state {
> struct spi_device *spi;
> struct regulator *reg;
> + struct regulator *dvdd;
> unsigned long mclk;
> unsigned short ctrl_fp;
> unsigned short ctrl_ss;
>
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