Commit 99b62519 authored by Jocelyn Falempe's avatar Jocelyn Falempe
Browse files

drm/imx: Add drm_panic support 



Add support for the drm_panic module, which displays a user-friendly
message to the screen when a kernel panic occurs.

v7:
 * use drm_panic_gem_get_scanout_buffer() helper

v8:
 * Replace get_scanout_buffer() logic with drm_panic_set_buffer()

v9:
 * Revert to using get_scanout_buffer() (Sima)
 * move get_scanout_buffer() to plane helper functions

v12:
 * Rename drm_panic_gem_get_scanout_buffer to drm_fb_dma_get_scanout_buffer
 (Thomas Zimmermann)

Signed-off-by: default avatarJocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240409163432.352518-9-jfalempe@redhat.com


Acked-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 7e64f7c8

drivers/gpu/drm/imx/ipuv3/ipuv3-plane.c

+11 −1
Original line number Diff line number Diff line
@@ -773,6 +773,13 @@ static const struct drm_plane_helper_funcs ipu_plane_helper_funcs = { 
	.atomic_update = ipu_plane_atomic_update,

};



static const struct drm_plane_helper_funcs ipu_primary_plane_helper_funcs = {

	.atomic_check = ipu_plane_atomic_check,

	.atomic_disable = ipu_plane_atomic_disable,

	.atomic_update = ipu_plane_atomic_update,

	.get_scanout_buffer = drm_fb_dma_get_scanout_buffer,

};



bool ipu_plane_atomic_update_pending(struct drm_plane *plane)

{

	struct ipu_plane *ipu_plane = to_ipu_plane(plane);
@@ -916,6 +923,9 @@ struct ipu_plane *ipu_plane_init(struct drm_device *dev, struct ipu_soc *ipu, 
	ipu_plane->dma = dma;

	ipu_plane->dp_flow = dp;



	if (type == DRM_PLANE_TYPE_PRIMARY)

		drm_plane_helper_add(&ipu_plane->base, &ipu_primary_plane_helper_funcs);

	else

		drm_plane_helper_add(&ipu_plane->base, &ipu_plane_helper_funcs);



	if (dp == IPU_DP_FLOW_SYNC_BG || dp == IPU_DP_FLOW_SYNC_FG)