kernel/linux.git/drivers/gpu/drm/gud, branch v6.12.80

drm: add missing MODULE_DESCRIPTION() macros

2024-06-10T10:44:39+00:00

On x86, make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/gud/gud.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/drm_panel_orientation_quirks.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/drm_mipi_dbi.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/i915/kvmgt.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/udl/udl.o Add the missing invocation of the MODULE_DESCRIPTION() macro to all files which have a MODULE_LICENSE(). For consistency this includes drivers/gpu/drm/drm_simple_kms_helper.c since it contains a MODULE_LICENSE() even though it isn't built as a separate module -- it is always built as part of drm_kms_helper and drm_kms_helper_common.c already provides a MODULE_DESCRIPTION for that module. Signed-off-by: Jeff Johnson Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20240609-md-drivers-gpu-drm-v1-1-89e9a316d513@quicinc.com

drm/gud: Use fbdev-shmem

2024-05-02T09:33:17+00:00

Implement fbdev emulation with fbdev-shmem. Avoids the overhead of fbdev-generic's additional shadow buffering. No functional changes. Signed-off-by: Thomas Zimmermann Cc: "Noralf Trønnes" Acked-by: Noralf Trønnes Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-11-tzimmermann@suse.de

drm/gud: switch to struct drm_edid

2024-04-22T18:44:31+00:00

Prefer struct drm_edid based functions over struct edid. Reviewed-by: Noralf Trønnes Link: https://patchwork.freedesktop.org/patch/msgid/c519a9b9d3c3c9a413de33b99b97a1120f774f2d.1713273659.git.jani.nikula@intel.com Signed-off-by: Jani Nikula

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

2023-11-15T09:56:44+00:00

Let's kickstart the v6.8 release cycle. Signed-off-by: Maxime Ripard

drm/format-helper: Pass format-conversion state to helpers

2023-11-14T09:16:53+00:00

Pass an instance of struct drm_format_conv_state to DRM's format conversion helpers. Update all callers. Most drivers can use the format-conversion state from their shadow- plane state. The shadow plane's destroy function releases the allocated buffer. Drivers will later be able to allocate a buffer of appropriate size in their plane's atomic_check code. The gud driver uses a separate thread for committing updates. For now, the update worker contains its own format-conversion state. Images in the format-helper tests are small. The tests preallocate a static page for the temporary buffer. Unloading the module releases the memory. v6: * update patch for ssd132x support v5: * avoid using unusupported shadow-plane state in repaper (Noralf) * fix documentation (Noralf, kernel test robot) v3: * store buffer in shadow-plane state (Javier, Maxime) * replace ARRAY_SIZE() with sizeof() (Jani) Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Tested-by: Javier Martinez Canillas # ssd130x Cc: Noralf Trønnes Cc: Javier Martinez Canillas Cc: Gerd Hoffmann Cc: David Lechner Link: https://patchwork.freedesktop.org/patch/msgid/20231009141018.11291-4-tzimmermann@suse.de

drm/gud: Use size_add() in call to struct_size()

2023-09-29T21:48:32+00:00

If, for any reason, the open-coded arithmetic causes a wraparound, the protection that `struct_size()` adds against potential integer overflows is defeated. Fix this by hardening call to `struct_size()` with `size_add()`. Fixes: 40e1a70b4aed ("drm: Add GUD USB Display driver") Signed-off-by: "Gustavo A. R. Silva" Reviewed-by: Kees Cook Link: https://lore.kernel.org/r/ZQSlyHKPdw/zsy4c@work Signed-off-by: Kees Cook

drm/gud: use vmalloc_array and vcalloc

2023-07-04T10:05:08+00:00

Use vmalloc_array and vcalloc to protect against multiplication overflows. The changes were done using the following Coccinelle semantic patch: // @initialize:ocaml@ @@ let rename alloc = match alloc with "vmalloc" -> "vmalloc_array" | "vzalloc" -> "vcalloc" | _ -> failwith "unknown" @@ size_t e1,e2; constant C1, C2; expression E1, E2, COUNT, x1, x2, x3; typedef u8; typedef __u8; type t = {u8,__u8,char,unsigned char}; identifier alloc = {vmalloc,vzalloc}; fresh identifier realloc = script:ocaml(alloc) { rename alloc }; @@ ( alloc(x1*x2*x3) | alloc(C1 * C2) | alloc((sizeof(t)) * (COUNT), ...) | - alloc((e1) * (e2)) + realloc(e1, e2) | - alloc((e1) * (COUNT)) + realloc(COUNT, e1) | - alloc((E1) * (E2)) + realloc(E1, E2) ) // Signed-off-by: Julia Lawall Reviewed-by: Thomas Zimmermann Signed-off-by: Noralf Trønnes Link: https://patchwork.freedesktop.org/patch/msgid/20230627144339.144478-4-Julia.Lawall@inria.fr

drm/gud: use new debugfs device-centered functions

2023-01-06T19:15:08+00:00

Replace the use of drm_debugfs_create_files() with the new drm_debugfs_add_file() function, which center the debugfs files management on the drm_device instead of drm_minor. Moreover, remove the debugfs_init hook and add the debugfs files directly on gud_probe(), before drm_dev_register(). Signed-off-by: Maíra Canal Acked-by: Noralf Trønnes Signed-off-by: Maíra Canal Link: https://patchwork.freedesktop.org/patch/msgid/20221226155029.244355-3-mcanal@igalia.com

drm/gud: Fix missing include

2022-12-08T11:32:25+00:00

Add missing vmalloc.h include. Fixes: c17d048609bf ("drm/gud: Use the shadow plane helper") Reported-by: kernel test robot Reviewed-by: Thomas Zimmermann Signed-off-by: Noralf Trønnes Link: https://patchwork.freedesktop.org/patch/msgid/20221207-gud-missing-include-v1-0-c5b32c9c59da@tronnes.org

drm/gud: Enable synchronous flushing by default

2022-12-06T15:38:45+00:00

gud has a module parameter that controls whether framebuffer flushing happens synchronously during the commit or asynchronously in a worker. GNOME before version 3.38 handled all displays in the same rendering loop. This lead to gud slowing down the refresh rate for a faster monitor. This has now been fixed so lets change the default. The plan is to remove async flushing in the future. The code is now structured in a way that makes it easy to do this. Link: https://blogs.gnome.org/shell-dev/2020/07/02/splitting-up-the-frame-clock/ Suggested-by: Thomas Zimmermann Reviewed-by: Thomas Zimmermann Signed-off-by: Noralf Trønnes Link: https://patchwork.freedesktop.org/patch/msgid/20221122-gud-shadow-plane-v2-6-435037990a83@tronnes.org