Commit 8fb756df authored by Eric Anholt's avatar Eric Anholt
Browse files

drm: Trust format_mod_supported() when it OKs a plane modifier. 



For parameterized modifiers (Broadcom's SAND and UIF), we need to
allow the parameter fields to be filled in, while exposing only the
variant of the modifier with the parameter unfilled in the internal
arrays and the format blob.

Signed-off-by: default avatarEric Anholt <eric@anholt.net>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180316220435.31416-1-eric@anholt.net


Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
parent a38189c5

drivers/gpu/drm/drm_plane.c

+12 −11
Original line number Diff line number Diff line
@@ -561,6 +561,10 @@ int drm_plane_check_pixel_format(struct drm_plane *plane, 
	if (i == plane->format_count)

		return -EINVAL;



	if (plane->funcs->format_mod_supported) {

		if (!plane->funcs->format_mod_supported(plane, format, modifier))

			return -EINVAL;

	} else {

		if (!plane->modifier_count)

			return 0;
@@ -570,10 +574,7 @@ int drm_plane_check_pixel_format(struct drm_plane *plane, 
		}

		if (i == plane->modifier_count)

			return -EINVAL;



	if (plane->funcs->format_mod_supported &&

	    !plane->funcs->format_mod_supported(plane, format, modifier))

		return -EINVAL;

	}



	return 0;

}

include/drm/drm_plane.h

+4 −1
Original line number Diff line number Diff line
@@ -431,7 +431,10 @@ struct drm_plane_funcs { 
	 * This optional hook is used for the DRM to determine if the given

	 * format/modifier combination is valid for the plane. This allows the

	 * DRM to generate the correct format bitmask (which formats apply to

	 * which modifier).

	 * which modifier), and to valdiate modifiers at atomic_check time.

	 *

	 * If not present, then any modifier in the plane's modifier

	 * list is allowed with any of the plane's formats.

	 *

	 * Returns:

	 *

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