by Jonathan Cameron

[permalink] [raw]

Subject: Re: [PATCH 5/6] staging: iio: ad9832: add DVDD regulator

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 <[email protected]>
> Signed-off-by: Eva Rachel Retuya <[email protected]>
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;
>

2016-11-05 16:23:37

by Jonathan Cameron

[permalink] [raw]

Subject: Re: [PATCH 6/6] staging: iio: ad9832: clean-up regulator 'reg'

On 31/10/16 17:04, Eva Rachel Retuya wrote:
> Rename regulator 'reg' to 'avdd' so as to be clear what regulator it
> stands for specifically. Additionally, get rid of local variable 'reg'
> and use direct assignment instead. Update also the goto label pertaining
> to the avdd regulator during disable.
>
> Signed-off-by: Eva Rachel Retuya <[email protected]>
Applied to the togreg branch of iio.git and shortly pushed out as
testing for the autobuilders to play with it.

A nice little series, thanks!

Jonathan
> ---
> drivers/staging/iio/frequency/ad9832.c | 20 +++++++++-----------
> drivers/staging/iio/frequency/ad9832.h | 4 ++--
> 2 files changed, 11 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/staging/iio/frequency/ad9832.c b/drivers/staging/iio/frequency/ad9832.c
> index 6a5ab02..639047f 100644
> --- a/drivers/staging/iio/frequency/ad9832.c
> +++ b/drivers/staging/iio/frequency/ad9832.c
> @@ -204,7 +204,6 @@ static int ad9832_probe(struct spi_device *spi)
> struct ad9832_platform_data *pdata = dev_get_platdata(&spi->dev);
> struct iio_dev *indio_dev;
> struct ad9832_state *st;
> - struct regulator *reg;
> int ret;
>
> if (!pdata) {
> @@ -212,11 +211,11 @@ static int ad9832_probe(struct spi_device *spi)
> return -ENODEV;
> }
>
> - reg = devm_regulator_get(&spi->dev, "avdd");
> - if (IS_ERR(reg))
> - return PTR_ERR(reg);
> + st->avdd = devm_regulator_get(&spi->dev, "avdd");
> + if (IS_ERR(st->avdd))
> + return PTR_ERR(st->avdd);
>
> - ret = regulator_enable(reg);
> + ret = regulator_enable(st->avdd);
> if (ret) {
> dev_err(&spi->dev, "Failed to enable specified AVDD supply\n");
> return ret;
> @@ -225,13 +224,13 @@ static int ad9832_probe(struct spi_device *spi)
> st->dvdd = devm_regulator_get(&spi->dev, "dvdd");
> if (IS_ERR(st->dvdd)) {
> ret = PTR_ERR(st->dvdd);
> - goto error_disable_reg;
> + goto error_disable_avdd;
> }
>
> ret = regulator_enable(st->dvdd);
> if (ret) {
> dev_err(&spi->dev, "Failed to enable specified DVDD supply\n");
> - goto error_disable_reg;
> + goto error_disable_avdd;
> }
>
> indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
> @@ -241,7 +240,6 @@ static int ad9832_probe(struct spi_device *spi)
> }
> spi_set_drvdata(spi, indio_dev);
> st = iio_priv(indio_dev);
> - st->reg = reg;
> st->mclk = pdata->mclk;
> st->spi = spi;
>
> @@ -327,8 +325,8 @@ static int ad9832_probe(struct spi_device *spi)
>
> error_disable_dvdd:
> regulator_disable(st->dvdd);
> -error_disable_reg:
> - regulator_disable(reg);
> +error_disable_avdd:
> + regulator_disable(st->avdd);
>
> return ret;
> }
> @@ -340,7 +338,7 @@ static int ad9832_remove(struct spi_device *spi)
>
> iio_device_unregister(indio_dev);
> regulator_disable(st->dvdd);
> - regulator_disable(st->reg);
> + regulator_disable(st->avdd);
>
> return 0;
> }
> diff --git a/drivers/staging/iio/frequency/ad9832.h b/drivers/staging/iio/frequency/ad9832.h
> index eb0e7f2..1b08b04 100644
> --- a/drivers/staging/iio/frequency/ad9832.h
> +++ b/drivers/staging/iio/frequency/ad9832.h
> @@ -58,7 +58,7 @@
> /**
> * struct ad9832_state - driver instance specific data
> * @spi: spi_device
> - * @reg: supply regulator
> + * @avdd: supply regulator for the analog section
> * @dvdd: supply regulator for the digital section
> * @mclk: external master clock
> * @ctrl_fp: cached frequency/phase control word
> @@ -77,7 +77,7 @@
>
> struct ad9832_state {
> struct spi_device *spi;
> - struct regulator *reg;
> + struct regulator *avdd;
> struct regulator *dvdd;
> unsigned long mclk;
> unsigned short ctrl_fp;
>