kernel/linux.git/drivers/gpu/drm/sysfb/vesadrm.c, branch linux-7.0.y

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

Merge tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel

2025-07-31T02:26:49+00:00

Pull drm updates from Dave Airlie: "Highlights: - Intel xe enable Panthor Lake, started adding WildCat Lake - amdgpu has a bunch of reset improvments along with the usual IP updates - msm got VM_BIND support which is important for vulkan sparse memory - more drm_panic users - gpusvm common code to handle a bunch of core SVM work outside drivers. Detail summary: Changes outside drm subdirectory: - 'shrink_shmem_memory()' for better shmem/hibernate interaction - Rust support infrastructure: - make ETIMEDOUT available - add size constants up to SZ_2G - add DMA coherent allocation bindings - mtd driver for Intel GPU non-volatile storage - i2c designware quirk for Intel xe core: - atomic helpers: tune enable/disable sequences - add task info to wedge API - refactor EDID quirks - connector: move HDR sink to drm_display_info - fourcc: half-float and 32-bit float formats - mode_config: pass format info to simplify dma-buf: - heaps: Give CMA heap a stable name ci: - add device tree validation and kunit displayport: - change AUX DPCD access probe address - add quirk for DPCD probe - add panel replay definitions - backlight control helpers fbdev: - make CONFIG_FIRMWARE_EDID available on all arches fence: - fix UAF issues format-helper: - improve tests gpusvm: - introduce devmem only flag for allocation - add timeslicing support to GPU SVM ttm: - improve eviction sched: - tracing improvements - kunit improvements - memory leak fixes - reset handling improvements color mgmt: - add hardware gamma LUT handling helpers bridge: - add destroy hook - switch to reference counted drm_bridge allocations - tc358767: convert to devm_drm_bridge_alloc - improve CEC handling panel: - switch to reference counter drm_panel allocations - fwnode panel lookup - Huiling hl055fhv028c support - Raspberry Pi 7" 720x1280 support - edp: KDC KD116N3730A05, N160JCE-ELL CMN, N116BCJ-EAK - simple: AUO P238HAN01 - st7701: Winstar wf40eswaa6mnn0 - visionox: rm69299-shift - Renesas R61307, Renesas R69328 support - DJN HX83112B hdmi: - add CEC handling - YUV420 output support xe: - WildCat Lake support - Enable PanthorLake by default - mark BMG as SRIOV capable - update firmware recommendations - Expose media OA units - aux-bux support for non-volatile memory - MTD intel-dg driver for non-volatile memory - Expose fan control and voltage regulator in sysfs - restructure migration for multi-device - Restore GuC submit UAF fix - make GEM shrinker drm managed - SRIOV VF Post-migration recovery of GGTT nodes - W/A additions/reworks - Prefetch support for svm ranges - Don't allocate managed BO for each policy change - HWMON fixes for BMG - Create LRC BO without VM - PCI ID updates - make SLPC debugfs files optional - rework eviction rejection of bound external BOs - consolidate PAT programming logic for pre/post Xe2 - init changes for flicker-free boot - Enable GuC Dynamic Inhibit Context switch i915: - drm_panic support for i915/xe - initial flip queue off by default for LNL/PNL - Wildcat Lake Display support - Support for DSC fractional link bpp - Support for simultaneous Panel Replay and Adaptive sync - Support for PTL+ double buffer LUT - initial PIPEDMC event handling - drm_panel_follower support - DPLL interface renames - allocate struct intel_display dynamically - flip queue preperation - abstract DRAM detection better - avoid GuC scheduling stalls - remove DG1 force probe requirement - fix MEI interrupt handler on RT kernels - use backlight control helpers for eDP - more shared display code refactoring amdgpu: - add userq slot to INFO ioctl - SR-IOV hibernation support - Suspend improvements - Backlight improvements - Use scaling for non-native eDP modes - cleaner shader updates for GC 9.x - Remove fence slab - SDMA fw checks for userq support - RAS updates - DMCUB updates - DP tunneling fixes - Display idle D3 support - Per queue reset improvements - initial smartmux support amdkfd: - enable KFD on loongarch - mtype fix for ext coherent system memory radeon: - CS validation additional GL extensions - drop console lock during suspend/resume - bump driver version msm: - VM BIND support - CI: infrastructure updates - UBWC single source of truth - decouple GPU and KMS support - DP: rework I/O accessors - DPU: SM8750 support - DSI: SM8750 support - GPU: X1-45 support and speedbin support for X1-85 - MDSS: SM8750 support nova: - register! macro improvements - DMA object abstraction - VBIOS parser + fwsec lookup - sysmem flush page support - falcon: generic falcon boot code and HAL - FWSEC-FRTS: fb setup and load/execute ivpu: - Add Wildcat Lake support - Add turbo flag ast: - improve hardware generations implementation imx: - IMX8qxq Display Controller support lima: - Rockchip RK3528 GPU support nouveau: - fence handling cleanup panfrost: - MT8370 support - bo labeling - 64-bit register access qaic: - add RAS support rockchip: - convert inno_hdmi to a bridge rz-du: - add RZ/V2H(P) support - MIPI-DSI DCS support sitronix: - ST7567 support sun4i: - add H616 support tidss: - add TI AM62L support - AM65x OLDI bridge support bochs: - drm panic support vkms: - YUV and R* format support - use faux device vmwgfx: - fence improvements hyperv: - move out of simple - add drm_panic support" * tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel: (1479 commits) drm/tidss: oldi: convert to devm_drm_bridge_alloc() API drm/tidss: encoder: convert to devm_drm_bridge_alloc() drm/amdgpu: move reset support type checks into the caller drm/amdgpu/sdma7: re-emit unprocessed state on ring reset drm/amdgpu/sdma6: re-emit unprocessed state on ring reset drm/amdgpu/sdma5.2: re-emit unprocessed state on ring reset drm/amdgpu/sdma5: re-emit unprocessed state on ring reset drm/amdgpu/gfx12: re-emit unprocessed state on ring reset drm/amdgpu/gfx11: re-emit unprocessed state on ring reset drm/amdgpu/gfx10: re-emit unprocessed state on ring reset drm/amdgpu/gfx9.4.3: re-emit unprocessed state on kcq reset drm/amdgpu/gfx9: re-emit unprocessed state on kcq reset drm/amdgpu: Add WARN_ON to the resource clear function drm/amd/pm: Use cached metrics data on SMUv13.0.6 drm/amd/pm: Use cached data for min/max clocks gpu: nova-core: fix bounds check in PmuLookupTableEntry::new drm/amdgpu: Replace HQD terminology with slots naming drm/amdgpu: Add user queue instance count in HW IP info drm/amd/amdgpu: Add helper functions for isp buffers drm/amd/amdgpu: Initialize swnode for ISP MFD device ...

drm/vesadrm: Avoid NULL-ptr deref in vesadrm_pmi_cmap_write()

2025-06-27T14:00:49+00:00

Only set PMI fields if the screen_info's Vesa PM segment has been set. Vesa PMI is the power-management interface. It also provides means to set the color palette. The interface is optional, so not all VESA graphics cards support it. Print vesafb's warning [1] if the hardware palette cannot be set at all. If unsupported the field PrimaryPalette in struct vesadrm.pmi is NULL, which results in a segmentation fault. Happens with qemu's Cirrus emulation. Signed-off-by: Thomas Zimmermann Fixes: 814d270b31d2 ("drm/sysfb: vesadrm: Add gamma correction") Link: https://elixir.bootlin.com/linux/v6.15/source/drivers/video/fbdev/vesafb.c#L375 # 1 Cc: Thomas Zimmermann Cc: Javier Martinez Canillas Cc: dri-devel@lists.freedesktop.org Acked-by: Javier Martinez Canillas Link: https://lore.kernel.org/r/20250617140944.142392-1-tzimmermann@suse.de