drm: track CEA version number if present (ebec9a7b) · Commits · 戴 / test

Drivers need to know the CEA version number in addition to other display info (like whether the display is an HDMI sink) before enabling certain features. So track the CEA version number in the display info structure. Signed-off-by:

Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by:

Keith Packard <keithp@keithp.com>

drivers/gpu/drm/drm_edid.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -1439,6 +1439,8 @@ EXPORT_SYMBOL(drm_detect_monitor_audio);
		static void drm_add_display_info(struct edid *edid,
		struct drm_display_info *info)
		{
		u8 *edid_ext;

		info->width_mm = edid->width_cm * 10;
		info->height_mm = edid->height_cm * 10;

		@@ -1483,6 +1485,13 @@ static void drm_add_display_info(struct edid *edid,
		info->color_formats = DRM_COLOR_FORMAT_YCRCB444;
		if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB422)
		info->color_formats = DRM_COLOR_FORMAT_YCRCB422;

		/* Get data from CEA blocks if present */
		edid_ext = drm_find_cea_extension(edid);
		if (!edid_ext)
		return;

		info->cea_rev = edid_ext[1];
		}

		/**

include/drm/drm_crtc.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -205,6 +205,8 @@ struct drm_display_info {
		enum subpixel_order subpixel_order;
		u32 color_formats;

		u8 cea_rev;

		char raw_edid; / if any */
		};

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