Add support for the drm_panic module, which displays a message to the screen when a kernel panic occurs. v7 * Use drm_for_each_primary_visible_plane() v8: * Replace get_scanout_buffer() logic with drm_panic_set_buffer() (Thomas Zimmermann) Signed-off-by: Jocelyn Falempe <jfalempe@xxxxxxxxxx> --- drivers/gpu/drm/ast/ast_mode.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c index a718646a66b8..3d6d4c71bc34 100644 --- a/drivers/gpu/drm/ast/ast_mode.c +++ b/drivers/gpu/drm/ast/ast_mode.c @@ -43,6 +43,7 @@ #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_gem_shmem_helper.h> #include <drm/drm_managed.h> +#include <drm/drm_panic.h> #include <drm/drm_probe_helper.h> #include <drm/drm_simple_kms_helper.h> @@ -656,9 +657,13 @@ static void ast_primary_plane_helper_atomic_update(struct drm_plane *plane, struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc); struct ast_crtc_state *ast_crtc_state = to_ast_crtc_state(crtc_state); struct ast_vbios_mode_info *vbios_mode_info = &ast_crtc_state->vbios_mode_info; + struct iosys_map map; ast_set_color_reg(ast, fb->format); ast_set_vbios_color_reg(ast, fb->format, vbios_mode_info); + + iosys_map_set_vaddr_iomem(&map, ast_plane->vaddr); + drm_panic_set_buffer(plane->panic_scanout, fb, &map); } drm_atomic_helper_damage_iter_init(&iter, old_plane_state, plane_state); @@ -736,6 +741,7 @@ static int ast_primary_plane_init(struct ast_device *ast) } drm_plane_helper_add(primary_plane, &ast_primary_plane_helper_funcs); drm_plane_enable_fb_damage_clips(primary_plane); + drm_panic_register(primary_plane); return 0; } -- 2.43.0
