On Thu, 05 Dec 2024 12:59:20 +0000
Ricardo Ribalda <ribalda@xxxxxxxxxxxx> wrote:
> The device only provides a single scale, frequency and hysteresis for
> all the channels. Fix the info_mask_* to match the reality of the
> device.
>
> Without this patch:
> in_attention_scale
> in_attention_hysteresis
> in_attention_input
> in_attention_offset
> in_attention_sampling_frequency
> in_proximity_scale
> in_proximity_sampling_frequency
> in_proximity_offset
> in_proximity0_raw
> in_proximity_hysteresis
>
> With this patch:
> hysteresis
> scale
> sampling_frequency
> in_attention_input
> in_attention_offset
> in_proximity0_offset
> in_proximity0_raw
>
> Fixes: 596ef5cf654b ("iio: hid-sensor-prox: Add support for more channels")
> Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
whilst perhaps not ideal use of the ABI, what is there today is not wrong
as such. If the ABI above was all introduce in the recent patch I might
be fine adjusting it as you suggestion. However it wasn't, in_proximity_scale
has been there a long time so this would be an ABI change.
Those are generally only ok if there is a bug.
Drivers are always allowed to provide finer granularity than necessary
so in this case I don't see this as a bug.
Jonathan
> ---
> drivers/iio/light/hid-sensor-prox.c | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/iio/light/hid-sensor-prox.c b/drivers/iio/light/hid-sensor-prox.c
> index e8e7b2999b4c..f21d2da4c7f9 100644
> --- a/drivers/iio/light/hid-sensor-prox.c
> +++ b/drivers/iio/light/hid-sensor-prox.c
> @@ -49,9 +49,11 @@ static const u32 prox_sensitivity_addresses[] = {
> #define PROX_CHANNEL(_is_proximity, _channel) \
> {\
> .type = _is_proximity ? IIO_PROXIMITY : IIO_ATTENTION,\
> - .info_mask_separate = _is_proximity ? BIT(IIO_CHAN_INFO_RAW) :\
> - BIT(IIO_CHAN_INFO_PROCESSED),\
> - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |\
> + .info_mask_separate = \
> + (_is_proximity ? BIT(IIO_CHAN_INFO_RAW) :\
> + BIT(IIO_CHAN_INFO_PROCESSED)) |\
> + BIT(IIO_CHAN_INFO_OFFSET),\
> + .info_mask_shared_by_all = \
> BIT(IIO_CHAN_INFO_SCALE) |\
> BIT(IIO_CHAN_INFO_SAMP_FREQ) |\
> BIT(IIO_CHAN_INFO_HYSTERESIS),\
>
> ---
> base-commit: 40384c840ea1944d7c5a392e8975ed088ecf0b37
> change-id: 20241203-fix-hid-sensor-62e1979ecd03
>
> Best regards,
