kernel/linux.git/drivers/gpu/drm/sysfb/simpledrm.c, branch v6.19.11

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: simpledrm: Sort headers correctly

2025-09-23T13:59:01+00:00

Make sure the headers are sorted alphabetically to ensure consistent code. Signed-off-by: Luca Weiss Reviewed-by: Javier Martinez Canillas Reviewed-by: Thomas Zimmermann Signed-off-by: Thomas Zimmermann

drm/simpledrm: Use of_reserved_mem_region_to_resource() for "memory-region"

2025-08-13T22:12:45+00:00

Use the newly added of_reserved_mem_region_to_resource() function to handle "memory-region" properties. Reviewed-by: Javier Martinez Canillas Acked-by: Thomas Zimmermann Link: https://lore.kernel.org/r/20250703183447.2073902-1-robh@kernel.org Signed-off-by: Rob Herring (Arm)

drm/format-helper: Move drm_fb_build_fourcc_list() to sysfb helpers

2025-06-18T08:46:03+00:00

Only sysfb drivers use drm_fb_build_fourcc_list(). Move the function to sysfb helpers and rename it accordingly. Update drivers and tests. v3: - update naming in tests v2: - select DRM_SYSFB_HELPER (kernel test robot) Signed-off-by: Thomas Zimmermann Reviewed-by: José Expósito Acked-by: Maxime Ripard Acked-by: Javier Martinez Canillas Link: https://lore.kernel.org/r/20250616083846.221396-4-tzimmermann@suse.de

drm/sysfb: Share helpers for integer validation

2025-04-14T08:16:13+00:00

Provide sysfb helpers for validating framebuffer integer values against limits. Update drivers. If a driver did not specify a limit for a certain value, use INT_MAX. v2: - declare module information near EOF (Javier) Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://lore.kernel.org/r/20250410083834.10810-3-tzimmermann@suse.de

drm/sysfb: simpledrm: Remove unused helper simpledrm_device_of_dev()

2025-04-08T07:11:41+00:00

After moving most of the mode-setting pipeline into drm_sysfb_helper.c, simpledrm_device_of_dev() is no longer being used. Remove it. Signed-off-by: Thomas Zimmermann Reported-by: Jocelyn Falempe Closes: https://lore.kernel.org/dri-devel/20250407131344.139878-1-jfalempe@redhat.com/ Fixes: 177dfbdb7e67 ("drm/sysfb: Merge primary-plane functions") Reviewed-by: Javier Martinez Canillas Reviewed-by: Jocelyn Falempe Link: https://lore.kernel.org/r/20250407134753.985925-3-tzimmermann@suse.de

drm/simpledrm: Do not upcast in release helpers

2025-04-08T07:11:40+00:00

The res pointer passed to simpledrm_device_release_clocks() and simpledrm_device_release_regulators() points to an instance of struct simpledrm_device. No need to upcast from struct drm_device. The upcast is harmless, as DRM device is the first field in struct simpledrm_device. Signed-off-by: Thomas Zimmermann Fixes: 11e8f5fd223b ("drm: Add simpledrm driver") Cc: # v5.14+ Reviewed-by: Javier Martinez Canillas Reviewed-by: Jocelyn Falempe Link: https://lore.kernel.org/r/20250407134753.985925-2-tzimmermann@suse.de

drm/sysfb: Merge primary-plane functions

2025-04-07T09:02:07+00:00

Merge the primary plane code of ofdrm and simpledrm. Replace the plane implementation in each driver with the shared helpers. Set up driver callbacks and format modifiers with initializer macros. The plane code in ofdrm and simpledrm is very similar. Ofdrm has a more sophisticated implementation of atomic_disable, which clears individual scanlines. The code in simpledrm clears the whole buffer at once. Take the ofdrm version. Simpledrm supports get_scanout_buffer. Import it into the shared helpers, which makes it available in ofdrm. The supported formats are all native formats plus an optional enulated XRGB8888 if that's not already a native format. Provide an initializer macro that computes the size of the formats array. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://lore.kernel.org/r/20250401094056.32904-12-tzimmermann@suse.de

drm/sysfb: Merge CRTC functions

2025-04-07T09:02:07+00:00

Merge the CRTC functions of ofdrm and simpledrm. Replace the code in each driver with the shared helpers. Set up callbacks with initializer macros. Ofdrm supports a gamma LUT, while simpledrm does not. So far ofdrm's LUT size has been hard-coded in the driver CRTC's atomic_check helper. Now pass the size of the LUT to the sysfb device. Ofdrm's custom atomic_flush is still required to apply changes to the LUT. Simpledrm passes a LUT size of 0, which disables the gamma LUT. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://lore.kernel.org/r/20250401094056.32904-11-tzimmermann@suse.de

drm/sysfb: Maintain CRTC state in struct drm_sysfb_crtc_state

2025-04-07T09:02:07+00:00

Move ofdrm's struct ofdrm_crtc_state plus functions to sysfb helpers and rename everything to drm_sysfb_crtc_state. The sysfb CRTC state is a regular CRTC state with information on the primary plane's color format, as required for color management. Helpers for sysfb planes will later set this up automatically. In ofdrm and simpledrm, replace existing code with the new helpers. Ofdrm continues to use the CRTC state for color management. This has no effect on simpledrm. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://lore.kernel.org/r/20250401094056.32904-10-tzimmermann@suse.de