linux.git/drivers/gpu/drm/tiny/simpledrm.c, branch v6.2

drm/fb-helper: Move generic fbdev emulation into separate source file

2022-11-05T16:12:04+00:00

Move the generic fbdev implementation into its own source and header
file. Adapt drivers. No functional changes, but some of the internal
helpers have been renamed to fit into the drm_fbdev_ naming scheme.

v3:
	* rename drm_fbdev.{c,h} to drm_fbdev_generic.{c,h}
	* rebase onto vmwgfx changes
	* rebase onto xlnx changes
	* fix include statements in amdgpu

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20221103151446.2638-22-tzimmermann@suse.de

drm/crtc-helper: Add a drm_crtc_helper_atomic_check() helper

2022-10-13T07:17:05+00:00

Provides a default CRTC state check handler for CRTCs that only have one
primary plane attached.

There are some drivers that duplicate this logic in their helpers, such as
simpledrm and ssd130x. Factor out this common code into a CRTC helper and
make drivers use it.

Signed-off-by: Javier Martinez Canillas 
Reviewed-by: Thomas Zimmermann 
Link: https://patchwork.freedesktop.org/patch/msgid/20221011165136.469750-5-javierm@redhat.com

drm/simpledrm: Do not call drm_atomic_add_affected_planes()

2022-10-13T07:17:04+00:00

There's no need to add planes to the atomic state. Remove the call
to drm_atomic_add_affected_planes() from simpledrm.

On full modesets, the DRM helpers already add a CRTC's planes to the
atomic state; see drm_atomic_helper_check_modeset(). There's no reason
to call drm_atomic_add_affected_planes() unconditionally in the CRTC's
atomic_check() in simpledrm. It's also too late, as the atomic_check()
of the added planes will not be called before the commit.

Suggested-by: Thomas Zimmermann 
Signed-off-by: Javier Martinez Canillas 
Reviewed-by: Thomas Zimmermann 
Link: https://patchwork.freedesktop.org/patch/msgid/20221011165136.469750-3-javierm@redhat.com

drm/atomic-helper: Replace drm_atomic_helper_check_crtc_state()

2022-10-08T13:26:55+00:00

Rename the atomic helper function drm_atomic_helper_check_crtc_state()
to drm_atomic_helper_check_crtc_primary_plane() and only check for an
attached primary plane. Adapt callers.

Instead of having one big function to check for various CRTC state
conditions, we rather want smaller functions that drivers can pick
individually.

v5:
	* rebase on top of udl changes

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20221007124338.24152-3-tzimmermann@suse.de

drm/simpledrm: Synchronize access to GEM BOs

2022-09-27T08:27:00+00:00

Synchronize CPU access to GEM BOs with other drivers when updating the
screen buffer. Imported buffers might otherwise contain stale data.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20220922130944.27138-6-tzimmermann@suse.de

drm/simpledrm: Iterate over damage clips

2022-09-27T08:26:57+00:00

Iterate over all damage clips and updated them one by one. Replaces
the merging of damage areas, which can result in significant overhead
if damage areas are not close to each other.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20220922130944.27138-5-tzimmermann@suse.de

drm/simpledrm: Remove !fb check from atomic_update

2022-09-27T08:26:37+00:00

The primary plane implements atomic_disable, so atomic_update will
not be called without a framebuffer set. Remove the test for !fb.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20220922130944.27138-4-tzimmermann@suse.de

drm/simpledrm: Use drm_atomic_get_new_plane_state()

2022-09-27T08:25:22+00:00

Lookup the plane's state in atomic_update with the helper
drm_atomic_get_new_plane_state(). Also rename the helpers'
state arguments. No functional changes.

Suggested-by: Ville Syrjälä 
Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Reviewed-by: Michael J. Ruhl 
Link: https://patchwork.freedesktop.org/patch/msgid/20220922130944.27138-3-tzimmermann@suse.de

drm/simpledrm: Compute linestride with drm_format_info_min_pitch()

2022-09-27T08:24:47+00:00

If not given, compute the stride with drm_format_info_min_pitch(). It's
the standard helper for this purpose.

Suggested-by: Daniel Vetter 
Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Fixes: fd9e3169e42b ("drm/simpledrm: Compute framebuffer stride if not set")
Cc: Javier Martinez Canillas 
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20220922130944.27138-2-tzimmermann@suse.de

drm/plane-helper: Add a drm_plane_helper_atomic_check() helper

2022-09-16T21:33:52+00:00

Provides a default plane state check handler for primary planes that are a
fullscreen scanout buffer and whose state scale and position can't change.

There are some drivers that duplicate this logic in their helpers, such as
simpledrm and ssd130x. Factor out this common code into a plane helper and
make drivers use it.

Suggested-by: Thomas Zimmermann 
Signed-off-by: Javier Martinez Canillas 
Reviewed-by: Thomas Zimmermann 
Link: https://patchwork.freedesktop.org/patch/msgid/20220913162307.121503-1-javierm@redhat.com