OpenCloudOS-Kernel/drivers/gpu/drm/fsl-dcu
Maxime Ripard 37418bf14c
drm: Use state helper instead of the plane state pointer
Many drivers reference the plane->state pointer in order to get the
current plane state in their atomic_update or atomic_disable hooks,
which would be the new plane state in the global atomic state since
_swap_state happened when those hooks are run.

Use the drm_atomic_get_new_plane_state helper to get that state to make it
more obvious.

This was made using the coccinelle script below:

@ plane_atomic_func @
identifier helpers;
identifier func;
@@

(
 static const struct drm_plane_helper_funcs helpers = {
 	...,
 	.atomic_disable = func,
	...,
 };
|
 static const struct drm_plane_helper_funcs helpers = {
 	...,
 	.atomic_update = func,
	...,
 };
)

@ adds_new_state @
identifier plane_atomic_func.func;
identifier plane, state;
identifier new_state;
@@

 func(struct drm_plane *plane, struct drm_atomic_state *state)
 {
 	...
-	struct drm_plane_state *new_state = plane->state;
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane);
	...
 }

@ include depends on adds_new_state @
@@

 #include <drm/drm_atomic.h>

@ no_include depends on !include && adds_new_state @
@@

+ #include <drm/drm_atomic.h>
  #include <drm/...>

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20210219120032.260676-1-maxime@cerno.tech
2021-02-25 08:05:28 +01:00
..
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fsl_dcu_drm_crtc.c drm/atomic: Pass the full state to CRTC atomic begin and flush 2020-11-02 12:37:49 +01:00
fsl_dcu_drm_crtc.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
fsl_dcu_drm_drv.c drm/<drivers>: Constify struct drm_driver 2020-11-06 10:31:26 +01:00
fsl_dcu_drm_drv.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
fsl_dcu_drm_kms.c drm/fsl-dcu: drop use of drmP.h 2019-07-15 18:11:30 +02:00
fsl_dcu_drm_output.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
fsl_dcu_drm_plane.c drm: Use state helper instead of the plane state pointer 2021-02-25 08:05:28 +01:00
fsl_dcu_drm_plane.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
fsl_dcu_drm_rgb.c drm: Remove unnecessary drm_panel_attach and drm_panel_detach 2020-08-08 09:06:33 +02:00
fsl_tcon.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
fsl_tcon.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00