kernel/linux.git/drivers/gpu/drm/tiny/simpledrm.c, branch v6.12.80

drm/simpledrm: Do not upcast in release helpers

2025-07-10T14:05:04+00:00

[ Upstream commit d231cde7c84359fb18fb268cf6cff03b5bce48ff ] 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 Signed-off-by: Sasha Levin

drm/tiny/simpledrm: Use fbdev-shmem

2024-05-02T09:33:20+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: Thomas Zimmermann Cc: Javier Martinez Canillas Reviewed-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-18-tzimmermann@suse.de

drm/simpledrm: Add drm_panic support

2024-04-15T14:13:39+00:00

Add support for the drm_panic module, which displays a user-friendly message to the screen when a kernel panic occurs. v8: * Replace get_scanout_buffer() with drm_panic_set_buffer() (Thomas Zimmermann) v9: * Revert to using get_scanout_buffer() (Sima) * move get_scanout_buffer() to plane helper functions (Thomas Zimmermann) v12: * Use array for map and pitch in struct drm_scanout_buffer to support multi-planar format later. (Thomas Zimmermann) Signed-off-by: Jocelyn Falempe Reviewed-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20240409163432.352518-7-jfalempe@redhat.com Acked-by: Daniel Vetter

drm/simpledrm: Do not include

2023-12-06T09:36:18+00:00

Remove unnecessary include statements for . The file contains helpers for non-atomic code and should not be required by most drivers. No functional changes. Signed-off-by: Thomas Zimmermann Reviewed-by: Sui Jingfeng Reviewed-by: Javier Martinez Canillas Reviewed-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20231204090852.1650-8-tzimmermann@suse.de

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/simpledrm: Preallocate format-conversion buffer in atomic_check

2023-11-14T09:17:22+00:00

Preallocate the format-conversion state's storage in the plane's atomic_check function if a format conversion is necessary. Allows the update to fail if no memory is available. Avoids the same allocation within atomic_update, which may not fail. Also inline drm_plane_helper_atomic_check() into the driver and thus return early for invisible planes. Avoids memory allocation entirely in this case. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20231009141018.11291-6-tzimmermann@suse.de

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

BackMerge tag 'v6.6-rc7' into drm-next

2023-10-23T08:20:06+00:00

This is needed to add the msm pr which is based on a higher base. Signed-off-by: Dave Airlie

drm/tiny: correctly print `struct resource *` on error

2023-10-12T08:57:07+00:00

The `res` variable is already a `struct resource *`, don't take the address of it. Fixes incorrect output: simple-framebuffer 9e20dc000.framebuffer: [drm] *ERROR* could not acquire memory range [??? 0xffff4be88a387d00-0xfffffefffde0a240 flags 0x0]: -16 To be correct: simple-framebuffer 9e20dc000.framebuffer: [drm] *ERROR* could not acquire memory range [mem 0x9e20dc000-0x9e307bfff flags 0x200]: -16 Signed-off-by: Joey Gouly Fixes: 9a10c7e6519b ("drm/simpledrm: Add support for system memory framebuffers") Cc: Thomas Zimmermann Cc: Thierry Reding Cc: Javier Martinez Canillas Cc: dri-devel@lists.freedesktop.org Cc: # v6.3+ Reviewed-by: Thomas Zimmermann Signed-off-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20231010174652.2439513-1-joey.gouly@arm.com

drm/simpledrm: Fix power domain device link validity check

2023-10-12T08:39:48+00:00

We need to check if a link is non-NULL before trying to delete it. Fixes: 61df9ca23107 ("drm/simpledrm: Add support for multiple "power-domains"") Signed-off-by: Thierry Reding Signed-off-by: Thomas Zimmermann Reviewed-by: Thomas Zimmermann Cc: Janne Grunau Cc: Eric Curtin Cc: Neal Gompa Cc: Sven Peter Cc: Javier Martinez Canillas Cc: dri-devel@lists.freedesktop.org Link: https://patchwork.freedesktop.org/patch/msgid/20231011143230.1107731-1-thierry.reding@gmail.com