On Tue, Jul 28, 2020 at 6:14 PM Daniel Campello <campe...@chromium.org> wrote:
>
> From: Stephen Boyd <swb...@chromium.org>
>
> Enable the main power supply (vdd) and digital IO power supply (svdd)
> during probe so that the i2c communication and device works properly on
> boards that aggressively power gate these supplies.
>
> Reviewed-by: Douglas Anderson <diand...@chromium.org>
> Signed-off-by: Stephen Boyd <swb...@chromium.org>
> Signed-off-by: Daniel Campello <campe...@chromium.org>
Again wrong order.
After fixing,
Reviewed-by: Andy Shevchenko <andy.shevche...@gmail.com>
> ---
>
> drivers/iio/proximity/sx9310.c | 26 ++++++++++++++++++++++++++
> 1 file changed, 26 insertions(+)
>
> diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c
> index 202018b726e32f..24a2360b6314ef 100644
> --- a/drivers/iio/proximity/sx9310.c
> +++ b/drivers/iio/proximity/sx9310.c
> @@ -18,6 +18,7 @@
> #include <linux/module.h>
> #include <linux/pm.h>
> #include <linux/regmap.h>
> +#include <linux/regulator/consumer.h>
> #include <linux/slab.h>
>
> #include <linux/iio/buffer.h>
> @@ -118,6 +119,7 @@ struct sx9310_data {
> struct i2c_client *client;
> struct iio_trigger *trig;
> struct regmap *regmap;
> + struct regulator_bulk_data supplies[2];
> /*
> * Last reading of the proximity status for each channel.
> * We only send an event to user space when this changes.
> @@ -873,6 +875,13 @@ static int sx9310_set_indio_dev_name(struct device *dev,
> return 0;
> }
>
> +static void sx9310_regulator_disable(void *_data)
> +{
> + struct sx9310_data *data = _data;
> +
> + regulator_bulk_disable(ARRAY_SIZE(data->supplies), data->supplies);
> +}
> +
> static int sx9310_probe(struct i2c_client *client)
> {
> int ret;
> @@ -886,6 +895,8 @@ static int sx9310_probe(struct i2c_client *client)
>
> data = iio_priv(indio_dev);
> data->client = client;
> + data->supplies[0].supply = "vdd";
> + data->supplies[1].supply = "svdd";
> mutex_init(&data->mutex);
> init_completion(&data->completion);
>
> @@ -893,6 +904,21 @@ static int sx9310_probe(struct i2c_client *client)
> if (IS_ERR(data->regmap))
> return PTR_ERR(data->regmap);
>
> + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies),
> + data->supplies);
> + if (ret)
> + return ret;
> +
> + ret = regulator_bulk_enable(ARRAY_SIZE(data->supplies),
> data->supplies);
> + if (ret)
> + return ret;
> + /* Must wait for Tpor time after initial power up */
> + usleep_range(1000, 1100);
> +
> + ret = devm_add_action_or_reset(dev, sx9310_regulator_disable, data);
> + if (ret)
> + return ret;
> +
> ret = regmap_read(data->regmap, SX9310_REG_WHOAMI, &data->whoami);
> if (ret) {
> dev_err(dev, "error in reading WHOAMI register: %d\n", ret);
> --
> 2.28.0.rc0.142.g3c755180ce-goog
>
--
With Best Regards,
Andy Shevchenko
