diff options
| author | Jocelyn Falempe <jfalempe@redhat.com> | 2024-08-22 09:33:57 +0200 |
|---|---|---|
| committer | Jocelyn Falempe <jfalempe@redhat.com> | 2024-08-23 16:55:35 +0200 |
| commit | cb5164ac43d0fc37ac6b45cabbc4d244068289ef (patch) | |
| tree | e0bba38401b4345eca96fe74a56fe7868ccbdd02 /drivers/gpu/drm/drm_crtc_internal.h | |
| parent | 8f4eca6ac52a72181b4f054d4ef6289a5d8cfa5d (diff) | |
drm/panic: Add a QR code panic screen
This patch adds a new panic screen, with a QR code and the kmsg data
embedded.
If DRM_PANIC_SCREEN_QR_CODE_URL is set, then the kmsg data will be
compressed with zlib and encoded as a numerical segment, and appended
to the URL as a URL parameter. This allows to save space, and put
about ~7500 bytes of kmsg data, in a V40 QR code.
Linux distributions can customize the URL, and put a web frontend to
directly open a bug report with the kmsg data.
Otherwise the kmsg data will be encoded as a binary segment (ie raw
ascii) and only a maximum of 2953 bytes of kmsg data will be
available in the QR code.
You can also limit the QR code size with DRM_PANIC_SCREEN_QR_VERSION.
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240822073852.562286-5-jfalempe@redhat.com
Diffstat (limited to 'drivers/gpu/drm/drm_crtc_internal.h')
| -rw-r--r-- | drivers/gpu/drm/drm_crtc_internal.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h index 251ff7bba40d..89706aa8232f 100644 --- a/drivers/gpu/drm/drm_crtc_internal.h +++ b/drivers/gpu/drm/drm_crtc_internal.h @@ -320,10 +320,14 @@ drm_edid_load_firmware(struct drm_connector *connector) bool drm_panic_is_enabled(struct drm_device *dev); void drm_panic_register(struct drm_device *dev); void drm_panic_unregister(struct drm_device *dev); +void drm_panic_init(void); +void drm_panic_exit(void); #else static inline bool drm_panic_is_enabled(struct drm_device *dev) { return false; } static inline void drm_panic_register(struct drm_device *dev) {} static inline void drm_panic_unregister(struct drm_device *dev) {} +static inline void drm_panic_init(void) {} +static inline void drm_panic_exit(void) {} #endif #endif /* __DRM_CRTC_INTERNAL_H__ */ |