On 03/04/15 13:47, Vlad Dogaru wrote:
> Signed-off-by: Vlad Dogaru <vlad.dogaru@xxxxxxxxx>
Applied to the togreg branch of iio.git - initially pushed out as testing for the autobuilders to play.
J
> ---
> drivers/iio/proximity/sx9500.c | 47 ++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 47 insertions(+)
>
> diff --git a/drivers/iio/proximity/sx9500.c b/drivers/iio/proximity/sx9500.c
> index 74dff4e..f62d0b6 100644
> --- a/drivers/iio/proximity/sx9500.c
> +++ b/drivers/iio/proximity/sx9500.c
> @@ -18,6 +18,7 @@
> #include <linux/acpi.h>
> #include <linux/gpio/consumer.h>
> #include <linux/regmap.h>
> +#include <linux/pm.h>
>
> #include <linux/iio/iio.h>
> #include <linux/iio/buffer.h>
> @@ -89,6 +90,8 @@ struct sx9500_data {
> bool event_enabled[SX9500_NUM_CHANNELS];
> bool trigger_enabled;
> u16 *buffer;
> + /* Remember enabled channels and sample rate during suspend. */
> + unsigned int suspend_ctrl0;
> };
>
> static const struct iio_event_spec sx9500_events[] = {
> @@ -724,6 +727,49 @@ static int sx9500_remove(struct i2c_client *client)
> return 0;
> }
>
> +#ifdef CONFIG_PM_SLEEP
> +static int sx9500_suspend(struct device *dev)
> +{
> + struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
> + struct sx9500_data *data = iio_priv(indio_dev);
> + int ret;
> +
> + mutex_lock(&data->mutex);
> + ret = regmap_read(data->regmap, SX9500_REG_PROX_CTRL0,
> + &data->suspend_ctrl0);
> + if (ret < 0)
> + goto out;
> +
> + /*
> + * Scan period doesn't matter because when all the sensors are
> + * deactivated the device is in sleep mode.
> + */
> + ret = regmap_write(data->regmap, SX9500_REG_PROX_CTRL0, 0);
> +
> +out:
> + mutex_unlock(&data->mutex);
> + return ret;
> +}
> +
> +static int sx9500_resume(struct device *dev)
> +{
> + struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
> + struct sx9500_data *data = iio_priv(indio_dev);
> + int ret;
> +
> + mutex_lock(&data->mutex);
> + ret = regmap_write(data->regmap, SX9500_REG_PROX_CTRL0,
> + data->suspend_ctrl0);
> + mutex_unlock(&data->mutex);
> +
> + return ret;
> +}
> +#endif /* CONFIG_PM_SLEEP */
> +
> +static const struct dev_pm_ops sx9500_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(sx9500_suspend, sx9500_resume)
> +};
> +
> static const struct acpi_device_id sx9500_acpi_match[] = {
> {"SSX9500", 0},
> { },
> @@ -740,6 +786,7 @@ static struct i2c_driver sx9500_driver = {
> .driver = {
> .name = SX9500_DRIVER_NAME,
> .acpi_match_table = ACPI_PTR(sx9500_acpi_match),
> + .pm = &sx9500_pm_ops,
> },
> .probe = sx9500_probe,
> .remove = sx9500_remove,
>
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