linux.git/drivers/gpu/drm/tiny/cirrus.c, branch master

drm/cirrus: Rename to cirrus-qemu

2024-11-26T13:21:51+00:00

This driver is only for Qemu's emulated Cirrus hardware. Name it
accordingly.

Signed-off-by: Thomas Zimmermann 
Acked-by: Gerd Hoffmann 
Link: https://patchwork.freedesktop.org/patch/msgid/20241029143928.208349-3-tzimmermann@suse.de

drm/cirrus: Use virtual encoder and connector types

2024-11-26T13:19:57+00:00

The cirrus driver only works on emulated Cirrus hardware. Use the
correct types for encoder and connector.

As a side effect, the connector has no longer an EDID property. But
neither cirrus emulation nor driver provide any EDID data, so it
makes sense to not pretend that there could be one.

v2:
- mention removed EDID property in commit description (Dmitry)

Signed-off-by: Thomas Zimmermann 
Acked-by: Gerd Hoffmann 
Link: https://patchwork.freedesktop.org/patch/msgid/20241029143928.208349-2-tzimmermann@suse.de

drm/client: Move public client header to clients/ subdirectory

2024-11-15T08:42:13+00:00

Move the public header file drm_client_setup.h to the clients/
subdirectory and update all drivers. No functional changes.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Jocelyn Falempe 
Link: https://patchwork.freedesktop.org/patch/msgid/20241108154600.126162-3-tzimmermann@suse.de

drm/cirrus: Use video aperture helpers

2024-10-14T13:28:48+00:00

DRM's aperture functions have long been implemented as helpers
under drivers/video/ for use with fbdev. Avoid the DRM wrappers by
calling the video functions directly.

Signed-off-by: Thomas Zimmermann 
Cc: Dave Airlie 
Cc: Gerd Hoffmann 
Acked-by: Javier Martinez Canillas 
Acked-by: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/20240930130921.689876-23-tzimmermann@suse.de

drm/cirrus: Run DRM default client setup

2024-09-26T07:31:28+00:00

Call drm_client_setup() to run the kernel's default client setup
for DRM. Set fbdev_probe in struct drm_driver, so that the client
setup can start the common fbdev client.

The cirrus driver requests the same client pixel format as the value
stored in struct drm_mode_config.preferred_depth. The fbdev client
also looks at this value for the default pixel format. Thus remove
the format selection from cirrus.

v5:
- select DRM_CLIENT_SELECTION

Signed-off-by: Thomas Zimmermann 
Cc: Dave Airlie 
Cc: Gerd Hoffmann 
Acked-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20240924071734.98201-53-tzimmermann@suse.de

drm/tiny: add missing MODULE_DESCRIPTION() macros

2024-06-10T10:44:32+00:00

make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tiny/bochs.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tiny/cirrus.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tiny/gm12u320.o

Add the missing invocations of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson 
Reviewed-by: Hans de Goede 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20240609-md-drivers-gpu-drm-tiny-v1-1-6905fe4ada50@quicinc.com

drm/tiny/cirrus: Use fbdev-shmem

2024-05-02T09:33:19+00:00

Implement fbdev emulation with fbdev-shmem. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-15-tzimmermann@suse.de

drm/format-helper: Pass format-conversion state to helpers

2023-11-14T09:16:53+00:00

Pass an instance of struct drm_format_conv_state to DRM's format
conversion helpers. Update all callers.

Most drivers can use the format-conversion state from their shadow-
plane state. The shadow plane's destroy function releases the
allocated buffer. Drivers will later be able to allocate a buffer
of appropriate size in their plane's atomic_check code.

The gud driver uses a separate thread for committing updates. For
now, the update worker contains its own format-conversion state.

Images in the format-helper tests are small. The tests preallocate
a static page for the temporary buffer. Unloading the module releases
the memory.

v6:
	* update patch for ssd132x support
v5:
	* avoid using unusupported shadow-plane state in repaper (Noralf)
	* fix documentation (Noralf, kernel test robot)
v3:
	* store buffer in shadow-plane state (Javier, Maxime)
	* replace ARRAY_SIZE() with sizeof() (Jani)

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Tested-by: Javier Martinez Canillas  # ssd130x
Cc: Noralf Trønnes 
Cc: Javier Martinez Canillas 
Cc: Gerd Hoffmann 
Cc: David Lechner 
Link: https://patchwork.freedesktop.org/patch/msgid/20231009141018.11291-4-tzimmermann@suse.de

drm: Call drm_atomic_helper_shutdown() at shutdown time for misc drivers

2023-09-21T17:41:04+00:00

Based on grepping through the source code these drivers appear to be
missing a call to drm_atomic_helper_shutdown() at system shutdown
time. Among other things, this means that if a panel is in use that it
won't be cleanly powered off at system shutdown time.

The fact that we should call drm_atomic_helper_shutdown() in the case
of OS shutdown/restart comes straight out of the kernel doc "driver
instance overview" in drm_drv.c.

All of the drivers in this patch were fairly straightforward to fix
since they already had a call to drm_atomic_helper_shutdown() at
remove/unbind time but were just lacking one at system shutdown. The
only hitch is that some of these drivers use the component model to
register/unregister their DRM devices. The shutdown callback is part
of the original device. The typical solution here, based on how other
DRM drivers do this, is to keep track of whether the device is bound
based on drvdata. In most cases the drvdata is the drm_device, so we
can just make sure it is NULL when the device is not bound. In some
drivers, this required minor code changes. To make things simpler,
drm_atomic_helper_shutdown() has been modified to consider a NULL
drm_device as a noop in the patch ("drm/atomic-helper:
drm_atomic_helper_shutdown(NULL) should be a noop").

Suggested-by: Maxime Ripard
Reviewed-by: Tomi Valkeinen
Tested-by: Tomi Valkeinen
Acked-by: Maxime Ripard
Tested-by: Jernej Skrabec
Reviewed-by: Jernej Skrabec
Reviewed-by: Sui Jingfeng
Tested-by: Sui Jingfeng
Signed-off-by: Douglas Anderson
Link: https://patchwork.freedesktop.org/patch/msgid/20230901163944.RFT.2.I9115e5d094a43e687978b0699cc1fe9f2a3452ea@changeid

drm/cirrus: Use VGA macro constants to unblank

2023-03-13T09:37:09+00:00

Set the VGA bit for unblanking with macro constants instead of magic
values. No functional changes.

Signed-off-by: Thomas Zimmermann 
Acked-by: Gerd Hoffmann 
Link: https://patchwork.freedesktop.org/patch/msgid/20230215161517.5113-18-tzimmermann@suse.de