linux-toradex.git/drivers/gpu/drm/tiny, branch master

drm/adp: Switch to drm_atomic_helper_connector_create_state

2026-10-16T15:08:45+00:00

The adp connector implementation uses the deprecated
drm_atomic_helper_connector_reset() as its reset hook.

Switch to drm_atomic_helper_connector_create_state() instead.

Acked-by: Aditya Garg 
Link: https://lore.kernel.org/r/20261014-drm-no-more-connector-reset-v1-2-586c9c026823@kernel.org
Signed-off-by: Maxime Ripard

drm/appletbdrm: Fix incorrect error message on encoder attach failure

2026-10-16T11:06:01+00:00

drm_connector_attach_encoder() replaced an earlier call to
drm_simple_display_pipe_init() during review, but the error message
logged on failure was not updated to match and still refers to the
old call.

Fixes: 0670c2f56e45 ("drm/tiny: add driver for Apple Touch Bars in x86 Macs")
Signed-off-by: Adam Azuddin 
Signed-off-by: Lukas Wunner 
Link: https://patch.msgid.link/20260926-fix-err-msg-appletbdrm-v1-1-bb578a7dbdda@gmail.com

drm/appletbdrm: Add suspend and resume support

2026-10-16T07:50:54+00:00

The driver has no USB power management callbacks, so the USB core
unbinds it before system suspend and binds it again on resume. The DRM
device is unregistered and registered again on every suspend and resume
cycle, userspace driving the Touch Bar through it (such as tiny-dfr)
loses its device, and the Touch Bar stays dark after resume.

Implement suspend and resume with drm_mode_config_helper_suspend() and
drm_mode_config_helper_resume(), so the device stays registered and the
last committed state is restored on resume. If the device was reset
while suspended, repeat the probe-time handshake first.

Fixes: 0670c2f56e45 ("drm/tiny: add driver for Apple Touch Bars in x86 Macs")
Assisted-by: Claude:claude-opus-5-5
Signed-off-by: Vasilij Markin 
Signed-off-by: Lukas Wunner 
Link: https://patch.msgid.link/20261015-appletbdrm-pm-v3-1-47377176619a@tototo.si

drm/panic: Display panic screen via per-plane callback

2026-09-17T07:16:31+00:00

Add display_panic_screen to struct drm_plane_funcs. If set on a plane,
register a panic handler for the plane from the DRM core's panic
handling. Invoke this helper from the core to display a panic screen.

The new callback replaces get_scanout_buffer as signal for panic
support in a plane. Using get_scanout_buffer is now merely a detail
of the implementation. This will also free struct drm_scanout_buffer
for use cases besides panic handling.

With display_panic_screen in place, rename draw_panic_plane() to
drm_plane_helper_display_panic_screen() and make it available to DRM
drivers via drm_panic_helper.h. Do not change the implementation or
functionality of this code. drm_plane_helper_display_panic_screen()
still supports kernel messages, user messages and QR codes on various
color formats.

Then update all drivers that implement panic support. Provide the
initializer macro DRM_PANIC_PLANE_FUNCS that sets display_panic_screen
to drm_plane_helper_display_panic_screen(). If panic handling has
been disabled, it instead clears the callback. There's again no change
in functionality.

This logically splits panic handling into a set of entry points in the
DRM code and a set of helper functions provided by drivers. The core
invokes the driver's helper via callback, while the driver can tailor
the implementation to its needs. Panic handling now works like most
other interfaces in the DRM framework.

Locking and state-handling happens in the DRM core or helpers. Drivers
that receive a call to display_panic_screen can assume that no concurrent
modeset takes place on the plane or its CRTC.

Also update the documentation. Move information about locking and state
guarantees from drm_panic_trylock() to display_panic_screen, where
drivers authors can find it easily. Move information about the features
of the current implementation to drm_panic_helper_display_panic_screen().

v4:
- remove obsolete comment about fbcon interference (Jocelyn)
v2:
- only consider planes with get_scanout_buffer (Sashiko)
- set callback for planes create with drm_crtc_init() (Sashiko)
- return errno code from display_panic_screen

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Jocelyn Falempe 
Link: https://patch.msgid.link/20260911124540.279841-12-tzimmermann@suse.de

drm/arcgpu: Switch to drm_atomic_helper_plane_create_state

2026-09-16T15:21:52+00:00

The arcgpu 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-v5-1-f590d2003f2c@kernel.org
Signed-off-by: Maxime Ripard

drm/repaper: Switch to drm_atomic_helper_crtc_create_state

2026-09-16T07:24:22+00:00

The repaper 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-v5-6-bda007735748@kernel.org
Signed-off-by: Maxime Ripard

drm/gm12u320: Switch to drm_atomic_helper_crtc_create_state

2026-09-16T07:23:36+00:00

The tilcdc 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 
Reviewed-by: Javier Martinez Canillas 
Link: https://patch.msgid.link/20260915-drm-no-more-crtc-reset-v5-3-bda007735748@kernel.org
Signed-off-by: Maxime Ripard

drm/arcgpu: Switch to drm_atomic_helper_crtc_create_state

2026-09-16T07:23:35+00:00

The arcgpu 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-v5-1-bda007735748@kernel.org
Signed-off-by: Maxime Ripard

drm/repaper: replace struct drm_simple_display_pipe with regular atomic helpers

2026-09-14T12:00:06+00:00

Convert repaper to explicit primary plane, CRTC and encoder objects.

Keep the shadow-plane helpers, framebuffer access handling and
no-scaling plane-state validation from the simple-KMS 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-v3-6-cd5dc89858c6@oss.qualcomm.com

drm/arcpgu: replace struct drm_simple_display_pipe with regular atomic helpers

2026-09-14T11:59:36+00:00

Instantiate the primary plane, CRTC and encoder directly and wire them up
with standard atomic helpers.

Move the simple-pipe callbacks into explicit plane and CRTC helper
callbacks. Use commit-local CRTC and plane state in the CRTC enable path
for mode and pixel-format programming.

Handle missing remote encoder nodes explicitly and take the CRTC modeset
lock while reading CRTC state from debugfs.

Signed-off-by: Ze Huang 
Reviewed-by: Thomas Zimmermann 
Signed-off-by: Thomas Zimmermann 
Link: https://patch.msgid.link/20260727-drm-simple-kms-removal-v3-1-cd5dc89858c6@oss.qualcomm.com