kernel/git/next/linux-next.git/drivers/gpu/drm/imx, branch master

drm/imx: ipuv3: Convert to atomic_create_state

2026-08-31T13:11:19+00:00

The ipuv3 crtc implementation provides a custom reset hook. However, this hook only allocates the state, initializes it with __drm_atomic_helper_crtc_reset(), and frees the previous state. It does not perform any hardware reset. Since this is exactly what the atomic_create_state hook is meant to do, minus the old state cleanup which the caller handles, convert the implementation to use atomic_create_state with __drm_atomic_helper_crtc_state_init() instead. Reviewed-by: Philipp Zabel Reviewed-by: Thomas Zimmermann Link: https://patch.msgid.link/20260821-drm-no-more-crtc-reset-v1-49-fb793475c05a@kernel.org Signed-off-by: Maxime Ripard

drm/imx: dcss: Switch to drm_atomic_helper_crtc_create_state

2026-08-31T13:09:27+00:00

The imx dcss crtc implementation uses the deprecated drm_atomic_helper_crtc_reset() as its reset hook. Switch to drm_atomic_helper_crtc_create_state() instead. Reviewed-by: Thomas Zimmermann Link: https://patch.msgid.link/20260821-drm-no-more-crtc-reset-v1-12-fb793475c05a@kernel.org Signed-off-by: Maxime Ripard

drm/imx: dc: Switch to drm_atomic_helper_crtc_create_state

2026-08-31T13:09:26+00:00

The imx dc crtc implementation uses the deprecated drm_atomic_helper_crtc_reset() as its reset hook. Switch to drm_atomic_helper_crtc_create_state() instead. Reviewed-by: Thomas Zimmermann Link: https://patch.msgid.link/20260821-drm-no-more-crtc-reset-v1-11-fb793475c05a@kernel.org Signed-off-by: Maxime Ripard

drm/imx: remove dependency on DRM simple helpers

2026-08-26T08:00:02+00:00

The simple KMS helpers are deprecated because they only add an intermediate layer between drivers and atomic modesetting. Open-code drm_simple_encoder_init() by calling drm_encoder_init() directly and providing driver-local drm_encoder_funcs. Signed-off-by: Diogo Silva Signed-off-by: Thomas Zimmermann Reviewed-by: Thomas Zimmermann Link: https://patch.msgid.link/20260720-drm_simple_encoder_init-v2-8-5020b630668a@gmail.com

drm/imx/dcss: Convert to atomic_create_state

2026-08-21T14:20:27+00:00

The plane only initializes a pristine state in its reset hook using drm_atomic_helper_plane_reset(), which is equivalent to what atomic_create_state expects. Convert to it. The conversion was done using the following Coccinelle semantic patch: @@ identifier funcs; symbol drm_atomic_helper_plane_reset; symbol drm_atomic_helper_plane_create_state; @@ struct drm_plane_funcs funcs = { ..., - .reset = drm_atomic_helper_plane_reset, + .atomic_create_state = drm_atomic_helper_plane_create_state, ..., }; @match_struct_reset@ identifier funcs, reset_func; @@ struct drm_plane_funcs funcs = { ..., .reset = reset_func, ..., }; @reset_uses_helpers depends on match_struct_reset@ identifier match_struct_reset.reset_func; @@ void reset_func(...) { <+... ( __drm_atomic_helper_plane_reset(...); | __drm_gem_reset_shadow_plane(...); ) ...+> } @match_struct_destroy@ identifier funcs, destroy_func; @@ struct drm_plane_funcs funcs = { ..., .atomic_destroy_state = destroy_func, ..., }; @script:python renamed_func@ old_name << match_struct_reset.reset_func; new_name; @@ if old_name.endswith("_reset"): coccinelle.new_name = old_name.replace("_reset", "_create_state") else: coccinelle.new_name = old_name @update_struct depends on match_struct_reset && reset_uses_helpers@ identifier match_struct_reset.funcs, match_struct_reset.reset_func; identifier renamed_func.new_name; @@ struct drm_plane_funcs funcs = { ..., - .reset = reset_func, + .atomic_create_state = new_name, ..., }; @drop_destroy depends on update_struct && match_struct_destroy@ identifier match_struct_reset.reset_func; identifier match_struct_destroy.destroy_func; identifier container_func; identifier P; symbol drm_atomic_helper_plane_destroy_state; symbol __drm_atomic_helper_plane_destroy_state; @@ void reset_func(struct drm_plane *P) { ... ( - if (P->state) { - <+... ( - drm_atomic_helper_plane_destroy_state(P, P->state); | - __drm_atomic_helper_plane_destroy_state(P->state); | - P->funcs->atomic_destroy_state(P, P->state); | - destroy_func(P, P->state); ) - ...+> - } | - drm_WARN_ON_ONCE(P->dev, P->state); | - WARN_ON(P->state); ) ... ( - kfree(P->state); | - kfree(container_func(P->state)); | // kfree is optional ) ( - P->state = NULL; | // plane->state clearing is optional ) ... } @drop_destroy_mtk depends on update_struct@ identifier P; symbol __drm_atomic_helper_plane_destroy_state; symbol to_mtk_plane_state; @@ void mtk_plane_reset(struct drm_plane *P) { ... - if (P->state) { - __drm_atomic_helper_plane_destroy_state(P->state); - ... - } else { ... - } ... } @transform_nv50_wndw depends on update_struct@ identifier S; @@ void nv50_wndw_reset(...) { ... - if (WARN_ON(!(S = kzalloc_obj(*S)))) + S = kzalloc_obj(*S); + if (WARN_ON(!S)) return; ... } @transform_kzalloc depends on update_struct@ identifier match_struct_reset.reset_func; identifier P, S; statement ST; statement list STL; @@ void reset_func(struct drm_plane *P) { <... S = kzalloc_obj(*S); ( - if (S) - { - STL - } + if (!S) return; + + STL | - if (S) ST + if (!S) return; + + ST ) ...> } @transform_body depends on update_struct@ identifier match_struct_reset.reset_func; identifier renamed_func.new_name; identifier S, P; expression PS; @@ - void reset_func(struct drm_plane *P) + struct drm_plane_state *new_name(struct drm_plane *P) { ... S = kzalloc_obj(*S); ... ( if (!S) { ... - return; + return ERR_PTR(-ENOMEM); } | if (WARN_ON(!S)) { ... - return; + return ERR_PTR(-ENOMEM); } | if (S == NULL) { ... - return; + return ERR_PTR(-ENOMEM); } ) ... ( - __drm_atomic_helper_plane_reset(P, PS); + __drm_atomic_helper_plane_state_init(PS, P); | - __drm_gem_reset_shadow_plane(P, PS); + __drm_gem_shadow_plane_state_init(P, PS); ) ... } @update_early_return depends on update_struct@ identifier match_struct_reset.reset_func; identifier renamed_func.new_name; identifier P; expression PS; @@ struct drm_plane_state *new_name(struct drm_plane *P) { <+... - return; + return ERR_PTR(-EINVAL); ...+> } @update_return_plane depends on update_struct@ identifier match_struct_reset.reset_func; identifier renamed_func.new_name; identifier P; expression PS; @@ struct drm_plane_state *new_name(struct drm_plane *P) { ... __drm_atomic_helper_plane_state_init(PS, P); ... + + return PS; } @update_return_shadow depends on update_struct@ identifier renamed_func.new_name; identifier P; expression PS; @@ struct drm_plane_state *new_name(struct drm_plane *P) { ... __drm_gem_shadow_plane_state_init(P, PS); ... + + return &PS->base; } Reviewed-by: Laurentiu Palcu Link: https://patch.msgid.link/20260814-drm-no-more-plane-reset-v2-18-82d2963dd134@kernel.org Signed-off-by: Maxime Ripard

drm: fix missing header include for drm_panel_put()

2026-07-22T11:50:27+00:00

Some DRM drivers lacked the drm_panel.h include to use drm_panel_put() after the commit b71a623598d3 ("drm/panel: of_drm_find_panel() return a counted reference"). Fixes: b71a623598d3 ("drm/panel: of_drm_find_panel() return a counted reference") Reviewed-by: Laurentiu Palcu Reviewed-by: Thomas Zimmermann Signed-off-by: Neil Armstrong Link: https://patch.msgid.link/20260722-panel-fix-kms-panel-put-v1-1-ebde56446ee5@linaro.org

drm/panel: of_drm_find_panel() return a counted reference

2026-07-20T13:07:22+00:00

Callers of of_drm_find_panel() and drm_of_find_panel_or_bridge() receive a pointer with no reference held, creating a window where the panel device can be unregistered and freed between the lookup and first use (e.g., drm_panel_prepare()). Fix the lookup function by acquiring a reference with drm_panel_get() before returning, under panel_lock. Callers are now responsible for calling drm_panel_put() when they no longer need the pointer. For bridge drivers that immediately wrap the panel in a panel_bridge (which acquires its own reference), release the lookup reference right after the bridge creation call. For analogix-anx6345, which stores the panel for direct use, release the reference in the i2c remove path. For platform drivers using analogix_dp_core with a component lifecycle (exynos_dp, rockchip analogix_dp), release the lookup reference in the platform remove() function. The panel_bridge created during bind() holds a separate reference that devm cleanup releases after remove() returns. Also fix devm_drm_of_get_bridge() and drmm_of_get_bridge() in bridge/panel.c itself, update a second batch of drivers calling of_drm_find_panel() or drm_of_find_panel_or_bridge() to release the lookup reference after wrapping the panel in a bridge, and handle the cases where a panel is found but cannot be used, dropping the reference immediately in those paths. Assisted-by: Claude:claude-opus-4-6 Acked-by: Maxime Ripard Signed-off-by: Albert Esteve Signed-off-by: Neil Armstrong Link: https://patch.msgid.link/20260717-drm_refcount_wiring-v3-3-023900c32e01@redhat.com

drm/imx: include dc-drv.h to avoid sparse warning

2026-07-15T07:30:27+00:00

sparse (build with C=1) warns: drivers/gpu/drm/imx/dc/dc-ic.c:273:24: warning: symbol 'dc_ic_driver' was not declared. Should it be static? And it is right. Include dc-drv.h which declares the struct. This ensures the types of both match. Signed-off-by: Jiri Slaby (SUSE) Cc: Liu Ying Reviewed-by: Liu Ying Link: https://patch.msgid.link/20260708095645.385291-2-jirislaby@kernel.org Signed-off-by: Liu Ying

drm/imx: Switch to irq_domain_create_linear()

2026-07-15T07:28:24+00:00

irq_domain_add_linear() is going away as being obsolete now. Switch to the preferred irq_domain_create_linear(). That differs in the first parameter: It takes more generic struct fwnode_handle instead of struct device_node. Therefore, of_fwnode_handle() is added around the parameter. Note some of the users can likely use dev->fwnode directly instead of indirect of_fwnode_handle(dev->of_node). But dev->fwnode is not guaranteed to be set for all, so this has to be investigated on case to case basis (by people who can actually test with the HW). [ Liu Ying: Fix a complaint from 'checkpatch.pl --strict'. ] Signed-off-by: Jiri Slaby (SUSE) Cc: Thomas Gleixner Cc: Liu Ying Acked-by: Liu Ying Link: https://patch.msgid.link/20260708095645.385291-1-jirislaby@kernel.org Signed-off-by: Liu Ying

Merge tag 'drm-misc-next-2026-07-02' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

2026-07-06T23:34:04+00:00

drm-misc-next for 7.3: UAPI Changes: Cross-subsystem Changes: Core Changes: - bridge: Add atomic_create_state callback and helpers, drop atomic_reset - dp: Add support for DSC max delta BPP - edid: Parse panel type from DisplayID 2.x Display Parameters - sysfb: Improve panel, stride and framebuffer size validation Driver Changes: - hibmc: Improvements to the plane formats handling, switch to gem-shmem - nouveau: race fixes, misc improvements - bridges: - Convert all bridges to atomic_create_state - panels: - panel-edp: New quirks for BOE NE160QDM-NY1, MB116AS01 Signed-off-by: Dave Airlie From: Maxime Ripard Link: https://patch.msgid.link/20260702-powerful-successful-raptor-eded34@houat