linux-stable.git/drivers/gpu/drm/udl, branch linux-6.3.y

drm/udl: Remove unnecessary include statements for drm_crtc_helper.h

2023-01-18T08:25:32+00:00

Several source files include drm_crtc_helper.h without needing it or
only to get its transitive include statements; leading to unnecessary
compile-time dependencies.

Directly include required headers and drop drm_crtc_helper.h where
possible.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Sam Ravnborg 
Acked-by: Jani Nikula 
Acked-by: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/20230116131235.18917-21-tzimmermann@suse.de

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/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/udl: Add constants for commands

2022-10-07T11:47:40+00:00

Add constants for the various commands that the driver can send to
the device and update the respective helper functions. No functional
changes.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20221006095355.23579-17-tzimmermann@suse.de

drm/udl: Add register constants for framebuffer scanout addresses

2022-10-07T11:47:28+00:00

Add register constants for the framebuffer scanout addresses and
update the related helper functions. No functional changes.

v2:
	* extract address bytes with helper macros (Javier)
	* fix comments

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20221006095355.23579-16-tzimmermann@suse.de

drm/udl: Add register constants for video locks

2022-10-07T11:47:18+00:00

Add register constants for the video lock. No functional changes.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20221006095355.23579-15-tzimmermann@suse.de

drm/udl: Add register constants for color depth

2022-10-07T11:47:09+00:00

Add the register constants for setting the color depth. The driver
only uses 16bpp. No functional changes.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20221006095355.23579-14-tzimmermann@suse.de

drm/udl: Add constants for display-mode registers

2022-10-07T11:46:59+00:00

Add constants for the registers the contain various display-mode
parameters and update the mode-setting function. No functional
changes.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20221006095355.23579-13-tzimmermann@suse.de

drm/udl: Move register constants to udl_proto.h

2022-10-07T11:46:46+00:00

Move the existing register constants to a new file in preparation of
adding more of them. Renaming is intentional. No functional changes.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20221006095355.23579-12-tzimmermann@suse.de

drm/udl: Use damage iterator

2022-10-07T11:46:37+00:00

Use a damage iterator to process damage areas individually. Merging
damage areas can result in large updates of unchanged framebuffer
regions. As USB is rather slow, it's better to process damage areas
individually and hence minimize USB-transfered data.

As part of the change, move drm_gem_fb_{begin,end}_cpu_access() into
the plane's atomic_update helper. To avoid overhead and intermediate
writers, we want to synchronize buffers and reserve access only once
before copying damage areas of the framebuffer.

v2:
	* clarify commit message (Javier)

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20221006095355.23579-11-tzimmermann@suse.de