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

drm/mcde: Switch to drm_atomic_helper_plane_create_state

2026-09-16T15:22:01+00:00

The mcde plane implementation uses the deprecated drm_atomic_helper_plane_reset() as its reset hook. Switch to drm_atomic_helper_plane_create_state() instead. Reviewed-by: Thomas Zimmermann Link: https://patch.msgid.link/20260916-drm-no-more-plane-reset-v5-3-f590d2003f2c@kernel.org Signed-off-by: Maxime Ripard

drm/mcde: Switch to drm_atomic_helper_crtc_create_state

2026-09-16T07:23:37+00:00

The mcde 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/20260915-drm-no-more-crtc-reset-v5-4-bda007735748@kernel.org Signed-off-by: Maxime Ripard

drm/mcde: replace struct drm_simple_display_pipe with regular atomic helpers

2026-09-14T12:00:02+00:00

Convert MCDE to explicit plane, CRTC and encoder objects. Handle pending page-flip events from the CRTC atomic flush path using the commit-local CRTC state, and avoid manual connector/encoder attachment before the connector has been created by the bridge path. Signed-off-by: Ze Huang Reviewed-by: Thomas Zimmermann Signed-off-by: Thomas Zimmermann Link: https://patch.msgid.link/20260727-drm-simple-kms-removal-v3-3-cd5dc89858c6@oss.qualcomm.com

drm/mcde: dsi: simplify device_node management using scoped for_each variant

2026-09-14T08:16:31+00:00

Before further modifying this function, simpify the struct device_node management using the scoped variat of for_each_available_child_of_node(). Signed-off-by: Luca Ceresoli Reviewed-by: Linus Walleij Reviewed-by: Maxime Ripard Signed-off-by: Linus Walleij Link: https://patch.msgid.link/20260814-drm-bridge-every-panel-v1-8-19cd5277cc8d@bootlin.com

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/mcde: dsi: Add atomic bridge state handlers

2026-07-15T07:46:10+00:00

The dsi bridge doesn't implement any enable or disable callbacks, but is still missing the atomic state handlers. In order to remove the legacy bridge callback support from the DRM bridge core, add them. Generated by the following Coccinelle script: @ is_bridge @ identifier funcs; @@ struct drm_bridge_funcs funcs = { ..., }; @ has_create_state depends on is_bridge @ identifier funcs, f; @@ struct drm_bridge_funcs funcs = { ..., .atomic_create_state = f, ..., }; @ update_struct depends on (is_bridge && !has_create_state) @ identifier is_bridge.funcs; identifier f; @@ struct drm_bridge_funcs funcs = { + .atomic_create_state = drm_atomic_helper_bridge_create_state, + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, ..., }; @ update_pre_enable_struct depends on (is_bridge && !has_create_state) @ identifier is_bridge.funcs; identifier f; @@ struct drm_bridge_funcs funcs = { ..., - .pre_enable = f, + .atomic_pre_enable = f, ..., }; @ update_pre_enable_impl depends on update_pre_enable_struct @ identifier update_pre_enable_struct.f; identifier b; @@ -void f(struct drm_bridge *b) +void f(struct drm_bridge *b, struct drm_atomic_commit *commit) { ... } @ update_enable_struct depends on (is_bridge && !has_create_state) @ identifier is_bridge.funcs; identifier f; @@ struct drm_bridge_funcs funcs = { ..., - .enable = f, + .atomic_enable = f, ..., }; @ update_enable_impl depends on update_enable_struct @ identifier update_enable_struct.f; identifier b; @@ -void f(struct drm_bridge *b) +void f(struct drm_bridge *b, struct drm_atomic_commit *commit) { ... } @ update_disable_struct depends on (is_bridge && !has_create_state) @ identifier is_bridge.funcs; identifier f; @@ struct drm_bridge_funcs funcs = { ..., - .disable = f, + .atomic_disable = f, ..., }; @ update_disable_impl depends on update_disable_struct @ identifier update_disable_struct.f; identifier b; @@ -void f(struct drm_bridge *b) +void f(struct drm_bridge *b, struct drm_atomic_commit *commit) { ... } @ update_post_disable_struct depends on (is_bridge && !has_create_state) @ identifier is_bridge.funcs; identifier f; @@ struct drm_bridge_funcs funcs = { ..., - .post_disable = f, + .atomic_post_disable = f, ..., }; @ update_post_disable_impl depends on update_post_disable_struct @ identifier update_post_disable_struct.f; identifier b; @@ -void f(struct drm_bridge *b) +void f(struct drm_bridge *b, struct drm_atomic_commit *commit) { ... } Acked-by: Linus Walleij Reviewed-by: Luca Ceresoli Link: https://patch.msgid.link/20260707-drm-all-atomic-bridges-v2-27-21d03cbca446@kernel.org Signed-off-by: Maxime Ripard

drm/mcde: dsi: convert to of_drm_find_and_get_bridge()

2026-02-23T09:10:34+00:00

of_drm_find_bridge() is deprecated. Move to its replacement of_drm_find_and_get_bridge() which gets a bridge reference, and ensure it is put when done. We need to handle the two cases: when a panel is found and when it isn't, even though the latter is not supported. So: * in case a panel is not found and bridge is, get a reference to the found bridge * in case a panel is found, get a reference to the panel_bridge when it is added, so the following code always get exactly one reference that it needs to put Finally, use the next_bridge pointer in struct drm_bridge in order to simplify putting the reference. Reviewed-by: Linus Walleij Link: https://patch.msgid.link/20260131-drm-bridge-alloc-getput-drm_of_find_bridge-4-v2-4-e081bcdc1467@bootlin.com Signed-off-by: Luca Ceresoli

drm/mcde: dsi: mcde_dsi_bind: break when a panel or bridge is found

2026-02-23T09:10:34+00:00

mcde_dsi_bind() has a loop over all subnodes looking for a panel, but does not exit when a match is found and only stores the last match. However this will be problematic when introducing refcounting on the struct drm_device pointer in a following commit, because of_drm_find_and_get_bridge() would get a reference to multiple bridges. There seem to be no real reason for looking for multiple panels, so just break as soon as a match is found. Reviewed-by: Linus Walleij Link: https://patch.msgid.link/20260131-drm-bridge-alloc-getput-drm_of_find_bridge-4-v2-3-e081bcdc1467@bootlin.com Signed-off-by: Luca Ceresoli

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/mcde/mcde_clk_div: convert from round_rate() to determine_rate()

2025-09-15T13:08:15+00:00

The round_rate() clk ops is deprecated, so migrate this driver from round_rate() to determine_rate() using the Coccinelle semantic patch on the cover letter of this series. Reviewed-by: Linus Walleij Signed-off-by: Brian Masney Link: https://lore.kernel.org/r/20250811-drm-clk-round-rate-v2-2-4a91ccf239cf@redhat.com Signed-off-by: Raphael Gallais-Pou