diff options
| author | Eva Rachel Retuya <eraretuya@gmail.com> | 2016-11-01 01:04:34 +0800 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-11-05 16:22:09 +0000 |
| commit | a98461d79ba5bd9c5a83be3f5860cba5d5b54617 (patch) | |
| tree | 1d8ef874f6762847aa156f1be9967957d9a71564 /drivers/staging/iio/frequency | |
| parent | 9d1548143faf00142937e37c359047a52a2d0d1d (diff) | |
staging: iio: ad9832: add DVDD regulator
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@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/frequency')
| -rw-r--r-- | drivers/staging/iio/frequency/ad9832.c | 33 | ||||
| -rw-r--r-- | 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 7d8dc6cab720..6a5ab02e64ef 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 d32323b46be6..eb0e7f293169 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; |