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drm/amd/display: add DC drm_panic support

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Add support for the drm_panic module, which displays a pretty user
friendly message on the screen when a Linux kernel panic occurs.

It doesn't work yet on laptop panels, maybe due to PSR.

Adapted from Jocelyn's original patch to add DC drm_panic
support.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Lu Yao <yaolu@kylinos.cn>
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Cc: Harry Wentland <harry.wentland@amd.com>
This commit is contained in:
Jocelyn Falempe
2024-10-31 13:27:03 -04:00
committed by Alex Deucher
parent 1ad5bdc28b
commit 736692c3b7
1 changed files with 29 additions and 1 deletions
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30
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
View File

@@ -26,6 +26,7 @@
#include <drm/drm_atomic_helper.h>
#include <drm/drm_blend.h>
#include "drm/drm_framebuffer.h"
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
@@ -1421,6 +1422,20 @@ static void amdgpu_dm_plane_atomic_async_update(struct drm_plane *plane,
amdgpu_dm_plane_handle_cursor_update(plane, old_state);
}
static void amdgpu_dm_plane_panic_flush(struct drm_plane *plane)
{
struct dm_plane_state *dm_plane_state = to_dm_plane_state(plane->state);
struct drm_framebuffer *fb = plane->state->fb;
struct dc_plane_state *dc_plane_state;
if (!dm_plane_state || !dm_plane_state->dc_state)
return;
dc_plane_state = dm_plane_state->dc_state;
dc_plane_force_update_for_panic(dc_plane_state, fb->modifier ? true : false);
}
static const struct drm_plane_helper_funcs dm_plane_helper_funcs = {
.prepare_fb = amdgpu_dm_plane_helper_prepare_fb,
.cleanup_fb = amdgpu_dm_plane_helper_cleanup_fb,
@@ -1429,6 +1444,16 @@ static const struct drm_plane_helper_funcs dm_plane_helper_funcs = {
.atomic_async_update = amdgpu_dm_plane_atomic_async_update
};
static const struct drm_plane_helper_funcs dm_primary_plane_helper_funcs = {
.prepare_fb = amdgpu_dm_plane_helper_prepare_fb,
.cleanup_fb = amdgpu_dm_plane_helper_cleanup_fb,
.atomic_check = amdgpu_dm_plane_atomic_check,
.atomic_async_check = amdgpu_dm_plane_atomic_async_check,
.atomic_async_update = amdgpu_dm_plane_atomic_async_update,
.get_scanout_buffer = amdgpu_display_get_scanout_buffer,
.panic_flush = amdgpu_dm_plane_panic_flush,
};
static void amdgpu_dm_plane_drm_plane_reset(struct drm_plane *plane)
{
struct dm_plane_state *amdgpu_state = NULL;
@@ -1855,7 +1880,10 @@ int amdgpu_dm_plane_init(struct amdgpu_display_manager *dm,
plane->type != DRM_PLANE_TYPE_CURSOR)
drm_plane_enable_fb_damage_clips(plane);
drm_plane_helper_add(plane, &dm_plane_helper_funcs);
if (plane->type == DRM_PLANE_TYPE_PRIMARY)
drm_plane_helper_add(plane, &dm_primary_plane_helper_funcs);
else
drm_plane_helper_add(plane, &dm_plane_helper_funcs);
#ifdef AMD_PRIVATE_COLOR
dm_atomic_plane_attach_color_mgmt_properties(dm, plane);