kernel/linux.git/drivers/gpu/drm/drm_panic.c, branch v6.13.6

drm/panic: Add ABGR2101010 support

2024-11-04T11:36:55+00:00

Add support for ABGR2101010, used by the nouveau driver. Signed-off-by: Jocelyn Falempe Reviewed-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20241022185553.1103384-2-jfalempe@redhat.com

drm/panic: Add a QR code panic screen

2024-08-23T14:55:35+00:00

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 Reviewed-by: Alice Ryhl Link: https://patchwork.freedesktop.org/patch/msgid/20240822073852.562286-5-jfalempe@redhat.com

drm/panic: Simplify logo handling

2024-08-23T14:53:08+00:00

Move logo rectangle initialisation, and logo drawing in separate functions, so they can be re-used by different panic screens. It prepares the introduction of the QR code panic screen. Signed-off-by: Jocelyn Falempe Reviewed-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20240822073852.562286-4-jfalempe@redhat.com

drm/rect: Add drm_rect_overlap()

2024-08-23T14:47:56+00:00

Check if two rectangles overlap. It's a bit similar to drm_rect_intersect() but this won't modify the rectangle. Simplifies a bit drm_panic. Signed-off-by: Jocelyn Falempe Reviewed-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20240822073852.562286-3-jfalempe@redhat.com

drm/panic: Add integer scaling to blit()

2024-08-23T14:47:55+00:00

Add a parameter to the blit function, to upscale the image. This is necessary to draw a QR code, otherwise, the pixels are usually too small to be readable by most QR code reader. It can also be used later for drawing fonts on high DPI display. Signed-off-by: Jocelyn Falempe Reviewed-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20240822073852.562286-2-jfalempe@redhat.com

drm/panic: Add panic description

2024-08-12T08:15:45+00:00

Now that kmsg dump callback has the description parameter, use it in the user panic screen. This is the string passed to panic(), like "VFS: Unable to mount root fs on xxx" or "Attempted to kill init! exitcode=0xxxx". It gives a hint on why the panic occurred, without being too cryptic. Signed-off-by: Jocelyn Falempe Reviewed-by: Thomas Zimmermann Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20240807134902.458669-6-jfalempe@redhat.com

drm/panic: Remove useless export symbols

2024-08-12T08:14:09+00:00

drm_panic_[un]register() are called only from the core drm, so there is no need to export them. Suggested-by: Daniel Vetter Signed-off-by: Jocelyn Falempe Reviewed-by: Daniel Vetter Reviewed-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20240807134902.458669-3-jfalempe@redhat.com

drm/panic: Remove space before "!" in panic message

2024-08-12T08:14:09+00:00

There is no space between the last word, and the punctuation mark in English. Suggested-by: Diego Viola Signed-off-by: Jocelyn Falempe Reviewed-by: Daniel Vetter Reviewed-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20240807134902.458669-2-jfalempe@redhat.com

drm/panic: Add missing static inline to drm_panic_is_enabled()

2024-07-19T22:54:37+00:00

This breaks build if DRM_PANIC is not enabled. Also add the missing include drm_crtc_internal.h in drm_panic.c Fixes: 9f774c42a908 ("drm/panic: Add drm_panic_is_enabled()") Signed-off-by: Jocelyn Falempe Reviewed-by: Michal Wajdeczko Link: https://patchwork.freedesktop.org/patch/msgid/20240719122051.1507927-1-jfalempe@redhat.com

drm/panic: Add drm_panic_is_enabled()

2024-07-19T09:38:23+00:00

It allows to check if the drm device supports drm_panic. Prepare the work to have better integration with fbcon and vtconsole. Signed-off-by: Jocelyn Falempe Reviewed-by: Javier Martinez Canillas Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20240717090102.968152-2-jfalempe@redhat.com