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| author | Jocelyn Falempe <jfalempe@redhat.com> | 2024-04-09 19:30:48 +0300 |
|---|---|---|
| committer | Jocelyn Falempe <jfalempe@redhat.com> | 2024-04-15 17:14:16 +0300 |
| commit | baaf150fa9e775662c2883200b7222fe779f6fca (patch) | |
| tree | 8a6c31a4d40dcdd5682c0daaf50047d6b955ed39 /drivers/gpu/drm/ast/ast_mode.c | |
| parent | 99b625194569f2039d8f277c8a09cd18c1438b65 (diff) | |
| download | linux-baaf150fa9e775662c2883200b7222fe779f6fca.tar.xz | |
drm/ast: Add drm_panic support
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)
v9:
* Revert to using get_scanout_buffer() (Sima)
* move get_scanout_buffer() to plane helper functions
v12:
* Use array for map and pitch in struct drm_scanout_buffer
to support multi-planar format later. (Thomas Zimmermann)
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Acked-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Tested-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240409163432.352518-10-jfalempe@redhat.com
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/ast/ast_mode.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_mode.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c index ae21d89b899c..6695af70768f 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> @@ -701,12 +702,29 @@ static void ast_primary_plane_helper_atomic_disable(struct drm_plane *plane, ast_set_index_reg_mask(ast, AST_IO_VGASRI, 0x1, 0xdf, 0x20); } +static int ast_primary_plane_helper_get_scanout_buffer(struct drm_plane *plane, + struct drm_scanout_buffer *sb) +{ + struct ast_plane *ast_plane = to_ast_plane(plane); + + if (plane->state && plane->state->fb && ast_plane->vaddr) { + sb->format = plane->state->fb->format; + sb->width = plane->state->fb->width; + sb->height = plane->state->fb->height; + sb->pitch[0] = plane->state->fb->pitches[0]; + iosys_map_set_vaddr_iomem(&sb->map[0], ast_plane->vaddr); + return 0; + } + return -ENODEV; +} + static const struct drm_plane_helper_funcs ast_primary_plane_helper_funcs = { DRM_GEM_SHADOW_PLANE_HELPER_FUNCS, .atomic_check = ast_primary_plane_helper_atomic_check, .atomic_update = ast_primary_plane_helper_atomic_update, .atomic_enable = ast_primary_plane_helper_atomic_enable, .atomic_disable = ast_primary_plane_helper_atomic_disable, + .get_scanout_buffer = ast_primary_plane_helper_get_scanout_buffer, }; static const struct drm_plane_funcs ast_primary_plane_funcs = { |