linux-toradex.git/drivers/gpu/drm/tiny, branch v6.6-rc3

Merge tag 'drm-misc-fixes-2023-09-07' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

2023-09-14T12:00:51+00:00

One doc fix for drm/connector, one fix for amdgpu for an crash when
VRAM usage is high, and one fix in gm12u320 to fix the timeout units in
the code

Signed-off-by: Daniel Vetter 
From: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/w5nlld5ukeh6bgtljsxmkex3e7s7f4qquuqkv5lv4cv3uxzwqr@pgokpejfsyef

drm: gm12u320: Fix the timeout usage for usb_bulk_msg()

2023-09-04T08:00:57+00:00

The timeout arg of usb_bulk_msg() is ms already, which has been converted
to jiffies by msecs_to_jiffies() in usb_start_wait_urb(). So fix the usage
by removing the redundant msecs_to_jiffies() in the macros.

And as Hans suggested, also remove msecs_to_jiffies() for the IDLE_TIMEOUT
macro to make it consistent here and so change IDLE_TIMEOUT to
msecs_to_jiffies(IDLE_TIMEOUT) where it is used.

Fixes: e4f86e437164 ("drm: Add Grain Media GM12U320 driver v2")
Signed-off-by: Jinjie Ruan 
Suggested-by: Hans de Goede 
Reviewed-by: Hans de Goede 
Signed-off-by: Thomas Zimmermann 
Link: https://patchwork.freedesktop.org/patch/msgid/20230904021421.1663892-1-ruanjinjie@huawei.com

drm/tiny: panel-mipi-dbi: Allow sharing the D/C GPIO

2023-08-02T11:18:34+00:00

Displays that are connected to the same SPI bus may share the D/C GPIO.
Use GPIOD_FLAGS_BIT_NONEXCLUSIVE to allow access to the same GPIO for
multiple panel-mipi-dbi instances. Exclusive access to the GPIO during
transfers is ensured by the locking in drm_mipi_dbi.c.

Signed-off-by: Otto Pflüger 
Signed-off-by: Noralf Trønnes 
Link: https://patchwork.freedesktop.org/patch/msgid/20230724065654.5269-3-otto.pflueger@abscue.de

drm/mipi-dbi: Lock SPI bus before setting D/C GPIO

2023-08-02T11:18:07+00:00

Multiple displays may be connected to the same bus and share a D/C GPIO,
so the display driver needs exclusive access to the bus to ensure that
it can control the D/C GPIO safely.

Signed-off-by: Otto Pflüger 
Reviewed-by: Noralf Trønnes 
Acked-by: David Lechner 
Signed-off-by: Noralf Trønnes 
Link: https://patchwork.freedesktop.org/patch/msgid/20230724065654.5269-2-otto.pflueger@abscue.de

drm/repaper: Reduce temporary buffer size in repaper_fb_dirty()

2023-07-29T19:22:02+00:00

As the temporary buffer is no longer used to store 8-bit grayscale data,
its size can be reduced to the size needed to store the monochrome
bitmap data.

Fixes: 24c6bedefbe71de9 ("drm/repaper: Use format helper for xrgb8888 to monochrome conversion")
Signed-off-by: Geert Uytterhoeven 
Reviewed-by: Javier Martinez Canillas 
Signed-off-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20220317081830.1211400-6-geert@linux-m68k.org

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_read_bool() for boolean properties

2023-03-30T18:46:07+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.
Convert reading boolean properties to of_property_read_bool().

Reviewed-by: Laurent Pinchart 
Link: https://lore.kernel.org/r/20230310144706.1542295-1-robh@kernel.org
Signed-off-by: Rob Herring

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

drm/fbdev-generic: Remove unused prefer_shadow_fbdev flag

2023-03-22T12:32:47+00:00

Remove the flag prefer_shadow_fbdev from struct drm_mode_config.
Drivers set this flag to enable shadow buffering in the generic
fbdev emulation. Such shadow buffering is now mandatory, so the
flag is unused.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Reviewed-by: Zack Rusin 
Tested-by: Sui Jingfeng 
Link: https://patchwork.freedesktop.org/patch/msgid/20230320150751.20399-3-tzimmermann@suse.de

drm/arcpgu: Use GEM DMA fbdev emulation

2023-03-14T16:07:49+00:00

Use the fbdev emulation that is optimized for DMA helpers. Avoids
possible shadow buffering and makes the code simpler.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20230313155138.20584-20-tzimmermann@suse.de