diff options
| author | Christian Hewitt <christianshewitt@gmail.com> | 2023-03-03 13:33:12 +0100 |
|---|---|---|
| committer | Neil Armstrong <neil.armstrong@linaro.org> | 2023-03-06 09:42:01 +0100 |
| commit | 5c8cf1664f288098a971a1d1e65716a2b6a279e1 (patch) | |
| tree | 3dc100322969be1958f85f6fd342ebea42a5bfea /drivers/gpu/drm/meson/meson_vpp.c | |
| parent | drm/edid: fix info leak when failing to get panel id (diff) | |
| download | linux-5c8cf1664f288098a971a1d1e65716a2b6a279e1.tar.xz linux-5c8cf1664f288098a971a1d1e65716a2b6a279e1.zip | |
drm/meson: fix 1px pink line on GXM when scaling video overlay
Playing media with a resolution smaller than the crtc size requires the
video overlay to be scaled for output and GXM boards display a 1px pink
line on the bottom of the scaled overlay. Comparing with the downstream
vendor driver revealed VPP_DUMMY_DATA not being set [0].
Setting VPP_DUMMY_DATA prevents the 1px pink line from being seen.
[0] https://github.com/endlessm/linux-s905x/blob/master/drivers/amlogic/amports/video.c#L7869
Fixes: bbbe775ec5b5 ("drm: Add support for Amlogic Meson Graphic Controller")
Suggested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230303123312.155164-1-christianshewitt@gmail.com
Diffstat (limited to 'drivers/gpu/drm/meson/meson_vpp.c')
| -rw-r--r-- | drivers/gpu/drm/meson/meson_vpp.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/meson/meson_vpp.c b/drivers/gpu/drm/meson/meson_vpp.c index 154837688ab0..5df1957c8e41 100644 --- a/drivers/gpu/drm/meson/meson_vpp.c +++ b/drivers/gpu/drm/meson/meson_vpp.c @@ -100,6 +100,8 @@ void meson_vpp_init(struct meson_drm *priv) priv->io_base + _REG(VPP_DOLBY_CTRL)); writel_relaxed(0x1020080, priv->io_base + _REG(VPP_DUMMY_DATA1)); + writel_relaxed(0x42020, + priv->io_base + _REG(VPP_DUMMY_DATA)); } else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) writel_relaxed(0xf, priv->io_base + _REG(DOLBY_PATH_CTRL)); |