kernel/linux.git/drivers/gpu/drm/sysfb/vesadrm.c, branch linux-7.1.y

Merge drm/drm-next into drm-misc-next

2026-02-23T10:48:20+00:00

Let's merge 7.0-rc1 to start the new drm-misc-next window Signed-off-by: Maxime Ripard

drm/sysfb: Generalize pixel-format matching

2026-02-20T13:38:23+00:00

Provide drm_sysfb_get_format(), a helper that finds a specific DRM format from a list of pixel formats. The new function builds upon drm_sysfb_get_format_si(), which finds the DRM format from a given instance of struct screen_info. Now get the screen_info's pixel format in the caller. Allows for matching pixel formats in drivers without screen_info. Convert the callers in efidrm and vesadrm to the new interface. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Acked-by: Julius Werner Link: https://patch.msgid.link/20260217155836.96267-11-tzimmermann@suse.de

sysfb: Move edid_info into sysfb_primary_display

2025-12-16T13:12:44+00:00

Move x86's edid_info into sysfb_primary_display as a new field named edid. Adapt all users. An instance of edid_info has only been defined on x86. With the move into sysfb_primary_display, it becomes available on all architectures. Therefore remove this contraint from CONFIG_FIRMWARE_EDID. x86 fills the EDID data from boot_params.edid_info. DRM drivers pick up the raw data and make it available to DRM clients. Replace the drivers' references to edid_info and instead use the sysfb_display_info as passed from sysfb. Signed-off-by: Thomas Zimmermann Acked-by: Arnd Bergmann Acked-by: Ard Biesheuvel Signed-off-by: Ard Biesheuvel

sysfb: Pass sysfb_primary_display to devices

2025-12-16T13:12:44+00:00

Instead of screen_info, store a copy of sysfb_primary_display as device data. Pick it up in drivers. Later changes will add additional data to the display info, such as EDID information. Signed-off-by: Thomas Zimmermann Acked-by: Arnd Bergmann Acked-by: Ard Biesheuvel Reviewed-by: Richard Lyu Signed-off-by: Ard Biesheuvel

drm: include drm_print.h where needed

2025-10-31T08:34:52+00:00

There are a gazillion files that depend on drm_print.h being indirectly included via drm_buddy.h, drm_mm.h, or ttm/ttm_resource.h. In preparation for removing those includes, explicitly include drm_print.h where needed. Cc: Thomas Zimmermann Reviewed-by: Thomas Zimmermann Signed-off-by: Jani Nikula Link: https://lore.kernel.org/r/5fe67395907be33eb5199ea6d540e29fddee71c8.1761734313.git.jani.nikula@intel.com

drm/sysfb: Lookup blit function during atomic check

2025-09-23T13:06:06+00:00

Some configurations of sysfb outputs require format conversion from framebuffer to scanout buffer. It is a driver bug if the conversion helper is missing, yet it might happen on odd scanout formats. The old code, based on drm_fb_blit(), only detects this situation during the commit's hardware update, which is too late to abort the update. Lookup the correct blit helper as part of the check phase. Then store it in the sysfb plane state. Allows for detection of a missing helper before the commit has started. Also avoids drm_fb_blit()'s large switch statement on each updated scanline. Only a single lookup has to be done. The lookup is in drm_sysfb_get_blit_func(), which only tracks formats supported by sysfb drivers. The lookup happens in sysfb's begin_fb_access helper instead of its atomic_check helper. This allows vesadrm, and possibly other drivers, to implement their own atomic_check without interfering with blit lookups. Vesadrm implements XRGB8888 on top of R8 formats with the help of the atomic_check. Doing the blit lookup in begin_fb_access then always uses the correct CRTC format on all drivers. v2: - vesadrm: use drm_sysfb_plane_helper_begin_fb_access() - fix type in commit description (Javier) Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://lore.kernel.org/r/20250918154207.84714-3-tzimmermann@suse.de

drm/vesadrm: Remove unneeded semicolon

2025-08-28T10:15:14+00:00

Remove unnecessary semicolons reported by Coccinelle/coccicheck and the semantic patch at scripts/coccinelle/misc/semicolon.cocci. Signed-off-by: Chen Ni Reviewed-by: Thomas Zimmermann Signed-off-by: Thomas Zimmermann Link: https://lore.kernel.org/r/20250828085708.3383760-1-nichen@iscas.ac.cn

drm/vesadrm: Support DRM_FORMAT_C8

2025-08-26T07:54:20+00:00

Add support for DRM_FORMAT_C8 to vesadrm. The new pixel-format description PIXEL_FORMAT_C8 describes the layout. Vesadrm's helpers vesadrm_fill_palette_lut() and vesadrm_load_palette_lut() set the hardware palette according to the CRTC's output format. The driver emulates XRGB8888 by converting the source buffer to RGB332 and using the resulting 256 colors as index into the hardware palette. The hardware palette converts back to RGB during scanout. This has no overhead compared to other format conversion, but allows common userspace, such as Wayland compositors, to operate on the display. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://lore.kernel.org/r/20250714151513.309475-10-tzimmermann@suse.de

drm/vesadrm: Prepare color management for palette-based framebuffers

2025-08-26T07:54:19+00:00

Distiguish between component-based formats and 'the rest' in vesadrm's color management. Scanout buffers with component-based format allow for gamma correction. Palette-based formats (i.e., 'the rest') require palette setup. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://lore.kernel.org/r/20250714151513.309475-9-tzimmermann@suse.de

drm/vesadrm: Rename vesadrm_set_gamma_lut() to vesadrm_set_color_lut()

2025-08-26T07:54:19+00:00

Rename vesadrm's gamma helpers in preparation of the upcoming support for color palettes. Gamma correction and color palettes share the same hardware features, but the driver's old naming only indicated support for gamma LUTs. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://lore.kernel.org/r/20250714151513.309475-8-tzimmermann@suse.de