linux/drivers/gpu/drm/tilcdc, branch master

drm/tilcdc: Fix type mismatch

2026-03-17T16:50:49Z

cpu_to_be32() returns a __be32 big-endian value, but the compound literals passed to tilcdc_panel_update_prop() were typed as u32. This causes a sparse type mismatch warning. Fix it by using __be32 as the compound literal type to match the return type of cpu_to_be32(). Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202602200130.LjofC7YE-lkp@intel.com/ Fixes: 0ff223d991477 ("drm/tilcdc: Convert legacy panel binding via DT overlay at boot time") Signed-off-by: Kory Maincent (TI) Reviewed-by: Luca Ceresoli Link: https://patch.msgid.link/20260305163907.717719-1-kory.maincent@bootlin.com Signed-off-by: Luca Ceresoli

drm/tilcdc: Remove tilcdc_panel driver reintroduced by a merge

2026-03-17T16:29:22Z

The tilcdc_panel driver was removed by commit 8f1e1ab9c794 ("drm/tilcdc: Remove tilcdc panel driver"), but was inadvertently reintroduced by the merge commit 8b85987d3cf5 ("Merge drm/drm-next into drm-misc-next"). The regression went unnoticed because standard git commands such as 'git show' do not expose the change. It was only spotted via 'git show --stat': git show --stat 8b85987d3cf5 | grep tilcdc drivers/gpu/drm/tilcdc/tilcdc_panel.c | 408 + git show 8b85987d3cf5 | grep tilcdc (no output) Remove tilcdc_panel.c again to restore the previously intended state. Fixes: 8b85987d3cf5 ("Merge drm/drm-next into drm-misc-next") Signed-off-by: Kory Maincent (TI) Reviewed-by: Luca Ceresoli Link: https://patch.msgid.link/20260305155921.659550-1-kory.maincent@bootlin.com Signed-off-by: Luca Ceresoli

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

2026-02-23T10:48:20Z

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

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51Z

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28Z

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

drm/tilcdc: Add support for DRM_BRIDGE_ATTACH_NO_CONNECTOR

2026-02-11T08:16:16Z

Convert the driver to use the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag when attaching bridges. This modernizes the driver by delegating connector creation to the bridge subsystem through drm_bridge_connector_init() instead of manually searching for connectors created by the bridge. The custom tilcdc_encoder_find_connector() function is removed and replaced with the standard drm_bridge_connector infrastructure, which simplifies the code and aligns with current DRM bridge best practices. This change is safe as there are now no in-tree devicetrees that connect tilcdc to bridges which do not support the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag. Reviewed-by: Luca Ceresoli Signed-off-by: Kory Maincent (TI.com) Link: https://patch.msgid.link/20260123-feature_tilcdc-v5-25-5a44d2aa3f6f@bootlin.com Signed-off-by: Luca Ceresoli

drm/tilcdc: Use devm_drm_of_get_bridge() helper

2026-02-11T08:16:15Z

Replace drm_of_find_panel_or_bridge() with the newer devm_drm_of_get_bridge() helper which simplifies the code by: - Automatically handling both panel and bridge cases internally - Managing the panel-to-bridge conversion when needed - Using devres for resource management, eliminating manual cleanup This removes the need for explicit panel-to-bridge conversion via devm_drm_panel_bridge_add_typed() and the associated error handling path. Signed-off-by: Kory Maincent (TI.com) Reviewed-by: Luca Ceresoli Link: https://patch.msgid.link/20260123-feature_tilcdc-v5-20-5a44d2aa3f6f@bootlin.com Signed-off-by: Luca Ceresoli

drm/tilcdc: Convert to drm_device-based logging helpers

2026-02-11T08:16:15Z

Replace dev_* logging calls with their DRM equivalents. This aligns with the DRM subsystem's logging infrastructure and provides better integration with DRM debugging mechanisms. The drm_* helpers automatically include device information and integrate with DRM's debug category filtering. Reviewed-by: Luca Ceresoli Signed-off-by: Kory Maincent (TI.com) Link: https://patch.msgid.link/20260123-feature_tilcdc-v5-19-5a44d2aa3f6f@bootlin.com Signed-off-by: Luca Ceresoli

drm/tilcdc: Convert to DRM managed resources

2026-02-11T08:16:15Z

Convert the tilcdc driver to use DRM managed resources (drmm_* APIs) to eliminate resource lifetime issues, particularly in probe deferral scenarios. This conversion addresses potential use-after-free bugs by ensuring proper cleanup ordering through the DRM managed resource framework. The changes include: - Replace drm_crtc_init_with_planes() with drmm_crtc_alloc_with_planes() - Replace drm_universal_plane_init() with drmm_universal_plane_alloc() - Replace drm_simple_encoder_init() with drmm_simple_encoder_alloc() - Remove manual cleanup in tilcdc_crtc_destroy() and error paths - Remove drm_encoder_cleanup() from encoder error handling paths - Use drmm_add_action_or_reset() for remaining cleanup operations This approach is recommended by the DRM subsystem for improved resource lifetime management and is particularly important for drivers that may experience probe deferral. Reviewed-by: Luca Ceresoli Signed-off-by: Kory Maincent (TI.com) Link: https://patch.msgid.link/20260123-feature_tilcdc-v5-18-5a44d2aa3f6f@bootlin.com Signed-off-by: Luca Ceresoli

drm/tilcdc: Remove the use of drm_device private_data

2026-02-11T08:16:15Z

The DRM core documentation recommends against using dev_private: "Instead of using this pointer it is recommended that drivers use embed the struct &drm_device in their larger per-device structure." This patch refactors the tilcdc driver to follow this recommendation by embedding struct drm_device within struct tilcdc_drm_private and replacing all dev->dev_private accesses with the ddev_to_tilcdc_priv() helper macro that uses container_of(). This change aligns the driver with modern DRM best practices. Reviewed-by: Luca Ceresoli Signed-off-by: Kory Maincent (TI.com) Link: https://patch.msgid.link/20260123-feature_tilcdc-v5-17-5a44d2aa3f6f@bootlin.com Signed-off-by: Luca Ceresoli