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| author | Neil Armstrong <narmstrong@baylibre.com> | 2018-11-28 11:07:34 +0100 |
|---|---|---|
| committer | Neil Armstrong <narmstrong@baylibre.com> | 2018-12-03 11:12:09 +0100 |
| commit | 3a936bc2869667d7768f2266d14c4c49a849ffbe (patch) | |
| tree | bc0306a5f2d02ed1a1db41587f7b57a59dc45f8a /drivers/gpu/drm/meson/meson_viu.h | |
| parent | drm/v3d: Fix prime imports of buffers from other drivers. (diff) | |
| download | linux-3a936bc2869667d7768f2266d14c4c49a849ffbe.tar.xz linux-3a936bc2869667d7768f2266d14c4c49a849ffbe.zip | |
drm/meson: Fix an Alpha Primary Plane bug on Meson GXL/GXM SoCs
On the Amlogic GXL & GXM SoCs, a bug occurs on the primary plane when
alpha is used where the alpha is not aligned with the pixel content.
The workaround Amlogic implemented is to reset the OSD1 plane hardware
block each time the plane is (re)enabled, solving the issue.
In the reset, we still need to save the content of 2 registers which
depends on the status of the plane, in addition to reload the scaler
conversion matrix at the same time.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Maxime Jourdan <mjourdan@baylibre.com>
Reviewed-by: Maxime Jourdan <mjourdan@baylibre.com>
[narmstrong: fixed typo in commit log]
Link: https://patchwork.freedesktop.org/patch/msgid/20181128100734.6536-1-narmstrong@baylibre.com
Diffstat (limited to '')
| -rw-r--r-- | drivers/gpu/drm/meson/meson_viu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/meson/meson_viu.h b/drivers/gpu/drm/meson/meson_viu.h index 073b1910bd1b..0f84bddd2ff0 100644 --- a/drivers/gpu/drm/meson/meson_viu.h +++ b/drivers/gpu/drm/meson/meson_viu.h @@ -59,6 +59,7 @@ #define OSD_REPLACE_EN BIT(14) #define OSD_REPLACE_SHIFT 6 +void meson_viu_osd1_reset(struct meson_drm *priv); void meson_viu_init(struct meson_drm *priv); #endif /* __MESON_VIU_H */ |