Re: [PATCH V4 3/5] iio: st_magn: Add irq trigger handling

[Denis Ciocca <denis.ciocca@xxxxxx>]

Acked-by: Denis Ciocca <denis.ciocca@xxxxxx>


On 07/21/2015 04:35 PM, Giuseppe BARBA wrote:
> Add irq trigger handling for magnetometer also
>
> Signed-off-by: Giuseppe Barba <giuseppe.barba@xxxxxx>
> ---
>   drivers/iio/magnetometer/st_magn.h        |  2 ++
>   drivers/iio/magnetometer/st_magn_buffer.c |  7 +++++++
>   drivers/iio/magnetometer/st_magn_core.c   | 13 ++++++++++++-
>   3 files changed, 21 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/iio/magnetometer/st_magn.h b/drivers/iio/magnetometer/st_magn.h
> index 287691c..60441023 100644
> --- a/drivers/iio/magnetometer/st_magn.h
> +++ b/drivers/iio/magnetometer/st_magn.h
> @@ -25,6 +25,8 @@ void st_magn_common_remove(struct iio_dev *indio_dev);
>   #ifdef CONFIG_IIO_BUFFER
>   int st_magn_allocate_ring(struct iio_dev *indio_dev);
>   void st_magn_deallocate_ring(struct iio_dev *indio_dev);
> +int st_magn_trig_set_state(struct iio_trigger *trig, bool state);
> +#define ST_MAGN_TRIGGER_SET_STATE (&st_magn_trig_set_state)
>   #else /* CONFIG_IIO_BUFFER */
>   static inline int st_magn_probe_trigger(struct iio_dev *indio_dev, int irq)
>   {
> diff --git a/drivers/iio/magnetometer/st_magn_buffer.c b/drivers/iio/magnetometer/st_magn_buffer.c
> index bf427dc..ecd3bd0 100644
> --- a/drivers/iio/magnetometer/st_magn_buffer.c
> +++ b/drivers/iio/magnetometer/st_magn_buffer.c
> @@ -23,6 +23,13 @@
>   #include <linux/iio/common/st_sensors.h>
>   #include "st_magn.h"
>   
> +int st_magn_trig_set_state(struct iio_trigger *trig, bool state)
> +{
> +	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
> +
> +	return st_sensors_set_dataready_irq(indio_dev, state);
> +}
> +
>   static int st_magn_buffer_preenable(struct iio_dev *indio_dev)
>   {
>   	return st_sensors_set_enable(indio_dev, true);
> diff --git a/drivers/iio/magnetometer/st_magn_core.c b/drivers/iio/magnetometer/st_magn_core.c
> index 8d7d3a1..4c0cef8 100644
> --- a/drivers/iio/magnetometer/st_magn_core.c
> +++ b/drivers/iio/magnetometer/st_magn_core.c
> @@ -480,6 +480,16 @@ static const struct iio_info magn_info = {
>   	.write_raw = &st_magn_write_raw,
>   };
>   
> +#ifdef CONFIG_IIO_TRIGGER
> +static const struct iio_trigger_ops st_magn_trigger_ops = {
> +	.owner = THIS_MODULE,
> +	.set_trigger_state = ST_MAGN_TRIGGER_SET_STATE,
> +};
> +#define ST_MAGN_TRIGGER_OPS (&st_magn_trigger_ops)
> +#else
> +#define ST_MAGN_TRIGGER_OPS NULL
> +#endif
> +
>   int st_magn_common_probe(struct iio_dev *indio_dev)
>   {
>   	struct st_sensor_data *mdata = iio_priv(indio_dev);
> @@ -516,7 +526,8 @@ int st_magn_common_probe(struct iio_dev *indio_dev)
>   		return err;
>   
>   	if (irq > 0) {
> -		err = st_sensors_allocate_trigger(indio_dev, NULL);
> +		err = st_sensors_allocate_trigger(indio_dev,
> +						ST_MAGN_TRIGGER_OPS);
>   		if (err < 0)
>   			goto st_magn_probe_trigger_error;
>   	}

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