linux-stable.git/drivers/gpu/drm/sun4i, branch linux-5.6.y

sun6i: dsi: fix gcc-4.8

2020-05-20T06:21:58+00:00

[ Upstream commit 3a3a71f97c30983f1627c2c550d43566e9b634d2 ]

Older compilers warn about initializers with incorrect curly
braces:

drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c: In function 'sun6i_dsi_encoder_enable':
drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c:720:8: error: missing braces around initializer [-Werror=missing-braces]
  union phy_configure_opts opts = { 0 };
        ^
drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c:720:8: error: (near initialization for 'opts.mipi_dphy') [-Werror=missing-braces]

Use the GNU empty initializer extension to avoid this.

Fixes: bb3b6fcb6849 ("sun6i: dsi: Convert to generic phy handling")
Reviewed-by: Paul Kocialkowski 
Signed-off-by: Arnd Bergmann 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20200428215105.3928459-1-arnd@arndb.de
Signed-off-by: Sasha Levin

drm/sun4i: Fix DE2 VI layer format support

2020-03-03T21:44:29+00:00

DE2 VI layer doesn't support blending which means alpha channel is
ignored. Replace all formats with alpha with "don't care" (X) channel.

Fixes: 7480ba4d7571 ("drm/sun4i: Add support for DE2 VI planes")
Acked-by: Maxime Ripard 
Signed-off-by: Jernej Skrabec 
Link: https://patchwork.freedesktop.org/patch/msgid/20200224173901.174016-4-jernej.skrabec@siol.net

drm/sun4i: Add separate DE3 VI layer formats

2020-03-03T21:44:03+00:00

DE3 VI layers support alpha blending, but DE2 VI layers do not.
Additionally, DE3 VI layers support 10-bit RGB and YUV formats.

Make a separate list for DE3.

Fixes: c50519e6db4d ("drm/sun4i: Add basic support for DE3")
Acked-by: Maxime Ripard 
Signed-off-by: Jernej Skrabec 
Link: https://patchwork.freedesktop.org/patch/msgid/20200224173901.174016-3-jernej.skrabec@siol.net

drm/sun4i: de2/de3: Remove unsupported VI layer formats

2020-03-03T21:43:45+00:00

YUV444 and YVU444 are planar formats, but HW format RGB888 is packed.
This means that those two mappings were never correct. Remove them.

Fixes: 60a3dcf96aa8 ("drm/sun4i: Add DE2 definitions for YUV formats")
Acked-by: Maxime Ripard 
Signed-off-by: Jernej Skrabec 
Link: https://patchwork.freedesktop.org/patch/msgid/20200224173901.174016-2-jernej.skrabec@siol.net

Merge v5.6-rc1 into drm-misc-fixes

2020-02-12T13:08:59+00:00

We're based on v5.6, need v5.6-rc1 at least. :)

Signed-off-by: Maarten Lankhorst

Revert "drm/sun4i: drv: Allow framebuffer modifiers in mode config"

2020-01-27T09:42:10+00:00

This reverts commit 9db9c0cf5895e4ddde2814360cae7bea9282edd2.

Setting mode_config.allow_fb_modifiers manually is completely
unnecessary. It is set automatically by drm_universal_plane_init() based
on the fact if modifier list is provided or not. Even more, it breaks
DE2 and DE3 as they don't support any modifiers beside linear. Modifiers
aware applications can be confused by provided empty modifier list - at
least linear modifier should be included, but it's not for DE2 and DE3.

Fixes: 9db9c0cf5895 ("drm/sun4i: drv: Allow framebuffer modifiers in mode config")
Signed-off-by: Jernej Skrabec 
Reviewed-by: Paul Kocialkowski 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20200126065937.9564-1-jernej.skrabec@siol.net

Backmerge v5.5-rc7 into drm-next

2020-01-20T01:42:57+00:00

msm needs 5.5-rc4, go to the latest.

Signed-off-by: Dave Airlie

drm/sun4i: drc: Make sure we enforce the clock rate

2020-01-08T08:14:08+00:00

The DRC needs to run at 300MHz to be functional. This was done so far
using assigned-clocks in the device tree, but that is easy to forget, and
doesn't provide any other guarantee than the rate is going to be roughly
the one requested at probe time.

Therefore it's pretty fragile, so let's just use the exclusive clock API to
enforce it.

Reviewed-by: Chen-Yu Tsai 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20200107165957.672435-2-maxime@cerno.tech

drm/sun4i: backend: Make sure we enforce the clock rate

2020-01-08T08:13:47+00:00

The backend needs to run at 300MHz to be functional. This was done so far
using assigned-clocks in the device tree, but that is easy to forget, and
doesn't provide any other guarantee than the rate is going to be roughly
the one requested at probe time.

Therefore it's pretty fragile, so let's just use the exclusive clock API to
enforce it.

Reviewed-by: Chen-Yu Tsai 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20200107165957.672435-1-maxime@cerno.tech

drm/sun4i: tcon: Set RGB DCLK min. divider based on hardware model

2020-01-07T14:56:40+00:00

In commit 0b8e7bbde5e7 ("drm/sun4i: tcon: Set min division of TCON0_DCLK
to 1.") it was assumed that all TCON variants support a minimum divider
of 1 if only DCLK was used.

However, the oldest generation of hardware only supports minimum divider
of 4 if only DCLK is used. If a divider of 1 was used on this old
hardware, some scrolling artifact would appear. A divider of 2 seemed
OK, but a divider of 3 had artifacts as well.

Set the minimum divider when outputing to parallel RGB based on the
hardware model, with a minimum of 4 for the oldest (A10/A10s/A13/A20)
hardware, and a minimum of 1 for the rest. A value is not set for the
TCON variants lacking channel 0.

This fixes the scrolling artifacts seen on my A13 tablet.

Fixes: 0b8e7bbde5e7 ("drm/sun4i: tcon: Set min division of TCON0_DCLK to 1.")
Cc:  # 5.4.x
Signed-off-by: Chen-Yu Tsai 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20200107070113.28951-1-wens@kernel.org