drm/plane-helper: Add drm_plane_helper_check_state()

Add a version of drm_plane_helper_check_update() which takes a plane
state instead of having the caller pass in everything.

And to reduce code duplication, let's reimplement
drm_plane_helper_check_update() in terms of the new function, by
having a tempororary plane state on the stack.

v2: Add a note that the functions modifies the state (Chris)
v3: Fix drm_plane_helper_check_update() y coordinates (Daniel Kurtz)

Cc: Daniel Kurtz <djkurtz@chromium.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org> (v2)
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1470642910-14073-1-git-send-email-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä 2016-08-08 10:55:10 +03:00 committed by Sean Paul
parent d7da824d9e
commit df86af9133
2 changed files with 129 additions and 49 deletions

View file

@ -40,6 +40,11 @@
int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
const struct drm_crtc_funcs *funcs);
int drm_plane_helper_check_state(struct drm_plane_state *state,
const struct drm_rect *clip,
int min_scale, int max_scale,
bool can_position,
bool can_update_disabled);
int drm_plane_helper_check_update(struct drm_plane *plane,
struct drm_crtc *crtc,
struct drm_framebuffer *fb,