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drm: Add drm_mode_config->normalize_zpos boolean

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Instead of drivers duplicating the drm_atomic_helper_check() code to be
able to normalize the zpos they can use the normalize_zpos flag to let the
drm core to do it.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180321102029.15248-2-peter.ujfalusi@ti.com
This commit is contained in:
Peter Ujfalusi
2018-03-21 12:20:24 +02:00
committed by Tomi Valkeinen
parent f4392860b4
commit 49efffc7fb
3 changed files with 21 additions and 2 deletions
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4
include/drm/drm_plane.h
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@@ -51,8 +51,8 @@ struct drm_modeset_acquire_ctx;
* plane with a lower ID.
* @normalized_zpos: normalized value of zpos: unique, range from 0 to N-1
* where N is the number of active planes for given crtc. Note that
* the driver must call drm_atomic_normalize_zpos() to update this before
* it can be trusted.
* the driver must set drm_mode_config.normalize_zpos or call
* drm_atomic_normalize_zpos() to update this before it can be trusted.
* @src: clipped source coordinates of the plane (in 16.16)
* @dst: clipped destination coordinates of the plane
* @state: backpointer to global drm_atomic_state