On Wed, 14 Dec 2016, Arnaud Pouliquen <arnaud.pouliquen@xxxxxx> wrote:
> Add helper to allow users to retrieve the speaker allocations without
> knowledge of the ELD structure.
>
> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@xxxxxx>
For this one patch,
Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> ---
> include/drm/drm_edid.h | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
> index 919933d..0706cc6 100644
> --- a/include/drm/drm_edid.h
> +++ b/include/drm/drm_edid.h
> @@ -245,6 +245,7 @@ struct detailed_timing {
> # define DRM_ELD_AUD_SYNCH_DELAY_MAX 0xfa /* 500 ms */
>
> #define DRM_ELD_SPEAKER 7
> +# define DRM_ELD_SPEAKER_MASK 0x7f
> # define DRM_ELD_SPEAKER_RLRC (1 << 6)
> # define DRM_ELD_SPEAKER_FLRC (1 << 5)
> # define DRM_ELD_SPEAKER_RC (1 << 4)
> @@ -412,6 +413,18 @@ static inline int drm_eld_size(const uint8_t *eld)
> }
>
> /**
> + * drm_eld_get_spk_alloc - Get speaker allocation
> + * @eld: pointer to an ELD memory structure
> + *
> + * The returned value is the speakers mask. User has to use %DRM_ELD_SPEAKER
> + * field definitions to identify speakers.
> + */
> +static inline u8 drm_eld_get_spk_alloc(const uint8_t *eld)
> +{
> + return eld[DRM_ELD_SPEAKER] & DRM_ELD_SPEAKER_MASK;
> +}
> +
> +/**
> * drm_eld_get_conn_type - Get device type hdmi/dp connected
> * @eld: pointer to an ELD memory structure
> *
--
Jani Nikula, Intel Open Source Technology Center
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