From: Jocelyn Falempe <[email protected]> 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. Signed-off-by: Jocelyn Falempe <[email protected]> Signed-off-by: Alex Deucher <[email protected]> Cc: Lu Yao <[email protected]> Cc: Jocelyn Falempe <[email protected]> Cc: Harry Wentland <[email protected]> --- .../amd/display/amdgpu_dm/amdgpu_dm_plane.c | 30 ++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c index 495e3cd70426..c10cabb8b42b 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c @@ -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); -- 2.47.0
