linux-toradex.git/drivers/gpu/drm/tiny/simpledrm.c, branch v6.8-rc3

drm/simpledrm: Do not include

2023-12-06T09:36:18+00:00

Remove unnecessary include statements for .
The file contains helpers for non-atomic code and should not be
required by most drivers. No functional changes.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Sui Jingfeng 
Reviewed-by: Javier Martinez Canillas 
Reviewed-by: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/20231204090852.1650-8-tzimmermann@suse.de

Merge drm/drm-next into drm-misc-next

2023-11-15T09:56:44+00:00

Let's kickstart the v6.8 release cycle.

Signed-off-by: Maxime Ripard

drm/simpledrm: Preallocate format-conversion buffer in atomic_check

2023-11-14T09:17:22+00:00

Preallocate the format-conversion state's storage in the plane's
atomic_check function if a format conversion is necessary. Allows
the update to fail if no memory is available. Avoids the same
allocation within atomic_update, which may not fail.

Also inline drm_plane_helper_atomic_check() into the driver and thus
return early for invisible planes. Avoids memory allocation entirely
in this case.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20231009141018.11291-6-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

BackMerge tag 'v6.6-rc7' into drm-next

2023-10-23T08:20:06+00:00

This is needed to add the msm pr which is based on a higher base.

Signed-off-by: Dave Airlie

drm/tiny: correctly print `struct resource *` on error

2023-10-12T08:57:07+00:00

The `res` variable is already a `struct resource *`, don't take the address of it.

Fixes incorrect output:

	simple-framebuffer 9e20dc000.framebuffer: [drm] *ERROR* could not acquire memory range [??? 0xffff4be88a387d00-0xfffffefffde0a240 flags 0x0]: -16

To be correct:

	simple-framebuffer 9e20dc000.framebuffer: [drm] *ERROR* could not acquire memory range [mem 0x9e20dc000-0x9e307bfff flags 0x200]: -16

Signed-off-by: Joey Gouly 
Fixes: 9a10c7e6519b ("drm/simpledrm: Add support for system memory framebuffers")
Cc: Thomas Zimmermann 
Cc: Thierry Reding 
Cc: Javier Martinez Canillas 
Cc: dri-devel@lists.freedesktop.org
Cc:  # v6.3+
Reviewed-by: Thomas Zimmermann 
Signed-off-by: Thomas Zimmermann 
Link: https://patchwork.freedesktop.org/patch/msgid/20231010174652.2439513-1-joey.gouly@arm.com

drm/simpledrm: Fix power domain device link validity check

2023-10-12T08:39:48+00:00

We need to check if a link is non-NULL before trying to delete it.

Fixes: 61df9ca23107 ("drm/simpledrm: Add support for multiple "power-domains"")
Signed-off-by: Thierry Reding 
Signed-off-by: Thomas Zimmermann 
Reviewed-by: Thomas Zimmermann 
Cc: Janne Grunau 
Cc: Eric Curtin 
Cc: Neal Gompa 
Cc: Sven Peter 
Cc: Javier Martinez Canillas 
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20231011143230.1107731-1-thierry.reding@gmail.com

drm/simpledrm: Add support for multiple "power-domains"

2023-09-25T08:53:47+00:00

Multiple power domains need to be handled explicitly in each driver. The
driver core can not handle it automatically since it is not aware of
power sequencing requirements the hardware might have. This is not a
problem for simpledrm since everything is expected to be powered on by
the bootloader. simpledrm has just ensure it remains powered on during
its lifetime.
This is required on Apple silicon M2 and M2 Pro/Max/Ultra desktop
systems. The HDMI output initialized by the bootloader requires keeping
the display controller and a DP phy power domain on.

Signed-off-by: Janne Grunau 
Reviewed-by: Eric Curtin 
Reviewed-by: Neal Gompa 
Reviewed-by: Thomas Zimmermann 
Reviewed-by: Sven Peter 
Reviewed-by: Javier Martinez Canillas 
Signed-off-by: Thomas Zimmermann 
Link: https://patchwork.freedesktop.org/patch/msgid/20230912-simpledrm-multiple-power-domains-v2-1-01b66bfb1980@jannau.net

drm/tiny: Convert to platform remove callback returning void

2023-06-08T16:04:12+00:00

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.

Trivially convert the tiny drm drivers from always returning zero in the
remove callback to the void returning variant.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Douglas Anderson 
Link: https://patchwork.freedesktop.org/patch/msgid/20230507162616.1368908-50-u.kleine-koenig@pengutronix.de

drm: Use of_property_present() for testing DT property presence

2023-03-28T19:55:33+00:00

It is preferred to use typed property access functions (i.e.
of_property_read_ functions) rather than low-level
of_get_property/of_find_property functions for reading properties. As
part of this, convert of_get_property/of_find_property calls to the
recently added of_property_present() helper when we just want to test
for presence of a property and nothing more.

Reviewed-by: Jernej Skrabec 
Reviewed-by: Liu Ying  # i.MX bridge
Reviewed-by: Dmitry Baryshkov 
Reviewed-by: Laurent Pinchart 
Link: https://lore.kernel.org/r/20230310144705.1542207-1-robh@kernel.org
Signed-off-by: Rob Herring