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drm: parse color format support for digital displays

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EDID 1.4 digital displays report the color spaces they support in the
features block.  Add support for grabbing this data and stuffing it into
the display_info struct for driver use.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jesse Barnes
2011-04-15 13:48:57 -07:00
committed by Dave Airlie
parent 3b11228b54
commit da05a5a71a
3 changed files with 19 additions and 1 deletions
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7
drivers/gpu/drm/drm_edid.c
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@@ -1429,6 +1429,7 @@ static void drm_add_display_info(struct edid *edid,
/* driver figures it out in this case */
info->bpc = 0;
info->color_formats = 0;
/* Only defined for 1.4 with digital displays */
if (edid->revision < 4)
@@ -1461,6 +1462,12 @@ static void drm_add_display_info(struct edid *edid,
info->bpc = 0;
break;
}
info->color_formats = DRM_COLOR_FORMAT_RGB444;
if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB444)
info->color_formats = DRM_COLOR_FORMAT_YCRCB444;
if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB422)
info->color_formats = DRM_COLOR_FORMAT_YCRCB422;
}
/**