[PATCH 1/6] drm/edid: add drm_edid_is_digital()

[Ville Syrjälä]

On Thu, Aug 24, 2023 at 04:46:02PM +0300, Jani Nikula wrote:
> Checking edid->input & DRM_EDID_INPUT_DIGITAL is common enough to
> deserve a helper that also lets us abstract the raw EDID a bit better.
> 
> Signed-off-by: Jani Nikula <jani.nikula at intel.com>

Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

> ---
>  drivers/gpu/drm/drm_edid.c | 17 +++++++++++++++--
>  include/drm/drm_edid.h     |  1 +
>  2 files changed, 16 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index 340da8257b51..1dbb15439468 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -3110,7 +3110,7 @@ drm_monitor_supports_rb(const struct drm_edid *drm_edid)
>  		return ret;
>  	}
>  
> -	return ((drm_edid->edid->input & DRM_EDID_INPUT_DIGITAL) != 0);
> +	return drm_edid_is_digital(drm_edid);
>  }
>  
>  static void
> @@ -6519,7 +6519,7 @@ static void update_display_info(struct drm_connector *connector,
>  	if (edid->revision < 3)
>  		goto out;
>  
> -	if (!(edid->input & DRM_EDID_INPUT_DIGITAL))
> +	if (!drm_edid_is_digital(drm_edid))
>  		goto out;
>  
>  	info->color_formats |= DRM_COLOR_FORMAT_RGB444;
> @@ -7335,3 +7335,16 @@ static void _drm_update_tile_info(struct drm_connector *connector,
>  		connector->tile_group = NULL;
>  	}
>  }
> +
> +/**
> + * drm_edid_is_digital - is digital?
> + * @drm_edid: The EDID
> + *
> + * Return true if input is digital.
> + */
> +bool drm_edid_is_digital(const struct drm_edid *drm_edid)
> +{
> +	return drm_edid && drm_edid->edid &&
> +		drm_edid->edid->input & DRM_EDID_INPUT_DIGITAL;
> +}
> +EXPORT_SYMBOL(drm_edid_is_digital);
> diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
> index 48e93f909ef6..882d2638708e 100644
> --- a/include/drm/drm_edid.h
> +++ b/include/drm/drm_edid.h
> @@ -612,6 +612,7 @@ const struct drm_edid *drm_edid_read_switcheroo(struct drm_connector *connector,
>  int drm_edid_connector_update(struct drm_connector *connector,
>  			      const struct drm_edid *edid);
>  int drm_edid_connector_add_modes(struct drm_connector *connector);
> +bool drm_edid_is_digital(const struct drm_edid *drm_edid);
>  
>  const u8 *drm_find_edid_extension(const struct drm_edid *drm_edid,
>  				  int ext_id, int *ext_index);
> -- 
> 2.39.2

-- 
Ville Syrjälä
Intel