On Fri, 19 Aug 2022 22:19:17 +0300
Matti Vaittinen <mazziesaccount@xxxxxxxxx> wrote:
> Use devm_regulator_bulk_get_enable() instead of open coded bulk-get,
> bulk-enable, add-action-to-disable-at-detach - pattern.
>
> Signed-off-by: Matti Vaittinen <mazziesaccount@xxxxxxxxx>
>
> ---
> v2 => v3
> Split to own patch.
> ---
> drivers/iio/dac/ltc2688.c | 23 +++--------------------
> 1 file changed, 3 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/iio/dac/ltc2688.c b/drivers/iio/dac/ltc2688.c
> index 28bdde2d3088..fcad3efe62ea 100644
> --- a/drivers/iio/dac/ltc2688.c
> +++ b/drivers/iio/dac/ltc2688.c
> @@ -84,7 +84,6 @@ struct ltc2688_chan {
> struct ltc2688_state {
> struct spi_device *spi;
> struct regmap *regmap;
> - struct regulator_bulk_data regulators[2];
> struct ltc2688_chan channels[LTC2688_DAC_CHANNELS];
> struct iio_chan_spec *iio_chan;
> /* lock to protect against multiple access to the device and shared data */
> @@ -902,13 +901,6 @@ static int ltc2688_setup(struct ltc2688_state *st, struct regulator *vref)
> LTC2688_CONFIG_EXT_REF);
> }
>
> -static void ltc2688_disable_regulators(void *data)
> -{
> - struct ltc2688_state *st = data;
> -
> - regulator_bulk_disable(ARRAY_SIZE(st->regulators), st->regulators);
> -}
> -
> static void ltc2688_disable_regulator(void *regulator)
> {
> regulator_disable(regulator);
> @@ -970,6 +962,7 @@ static int ltc2688_probe(struct spi_device *spi)
> struct regulator *vref_reg;
> struct device *dev = &spi->dev;
> int ret;
> + static const char * const regulators[] = {"vcc", "iovcc"};
trivial - slight preference for
{ "vcc", "iovcc" };
This isn't as important as for numeric values as we get some readability
from the quotes but still nice to have.
For the whole static / vs non static. My personal preference is not
to have the static marking but I don't care that much.
>
> indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
> if (!indio_dev)
> @@ -988,21 +981,11 @@ static int ltc2688_probe(struct spi_device *spi)
> return dev_err_probe(dev, PTR_ERR(st->regmap),
> "Failed to init regmap");
>
> - st->regulators[0].supply = "vcc";
> - st->regulators[1].supply = "iovcc";
> - ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(st->regulators),
> - st->regulators);
> - if (ret)
> - return dev_err_probe(dev, ret, "Failed to get regulators\n");
> -
> - ret = regulator_bulk_enable(ARRAY_SIZE(st->regulators), st->regulators);
> + ret = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(regulators),
> + regulators);
> if (ret)
> return dev_err_probe(dev, ret, "Failed to enable regulators\n");
>
> - ret = devm_add_action_or_reset(dev, ltc2688_disable_regulators, st);
> - if (ret)
> - return ret;
> -
> vref_reg = devm_regulator_get_optional(dev, "vref");
> if (IS_ERR(vref_reg)) {
> if (PTR_ERR(vref_reg) != -ENODEV)
