linux/drivers/gpu/drm/imx
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
..
dcss drm: Use state helper instead of the plane state pointer 2021-02-25 08:05:28 +01:00
dw_hdmi-imx.c drm/imx: dw_hdmi-imx: use drm managed resources 2021-01-04 12:59:33 +01:00
imx-drm-core.c Merge drm/drm-next into drm-misc-next 2020-11-10 17:11:37 +01:00
imx-drm.h
imx-ldb.c drm/imx: imx-ldb: use drm managed resources 2021-01-04 12:59:33 +01:00
imx-tve.c drm/imx: imx-tve: use drm managed resources 2021-01-04 12:59:33 +01:00
ipuv3-crtc.c drm/imx: ipuv3-crtc: use drm managed resources 2021-01-04 12:59:34 +01:00
ipuv3-plane.c drm: Use state helper instead of the plane state pointer 2021-02-25 08:05:28 +01:00
ipuv3-plane.h drm/imx: ipuv3-plane: use drm managed resources 2021-01-04 12:59:34 +01:00
Kconfig drm/imx: depend on COMMON_CLK to fix compile tests 2021-01-04 12:54:18 +01:00
Makefile drm/imx: Add initial support for DCSS on iMX8MQ 2020-09-09 16:39:48 +02:00
parallel-display.c drm/imx: parallel-display: use drm managed resources 2021-01-04 12:59:34 +01:00