drm/meson: Correct OSD1 global alpha value
[ Upstream commit 6836829c8ea453c9e3e518e61539e35881c8ed5f ]
VIU_OSD1_CTRL_STAT.GLOBAL_ALPHA is a 9 bit field, so the maximum
value is 0x100 not 0xff.
This matches the vendor kernel.
Signed-off-by: Stuart Menefy <stuart.menefy@mathembedded.com>
Fixes: bbbe775ec5
("drm: Add support for Amlogic Meson Graphic Controller")
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220908155103.686904-1-stuart.menefy@mathembedded.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -128,7 +128,7 @@ static void meson_plane_atomic_update(struct drm_plane *plane,
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/* Enable OSD and BLK0, set max global alpha */
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/* Enable OSD and BLK0, set max global alpha */
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priv->viu.osd1_ctrl_stat = OSD_ENABLE |
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priv->viu.osd1_ctrl_stat = OSD_ENABLE |
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(0xFF << OSD_GLOBAL_ALPHA_SHIFT) |
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(0x100 << OSD_GLOBAL_ALPHA_SHIFT) |
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OSD_BLK0_ENABLE;
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OSD_BLK0_ENABLE;
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canvas_id_osd1 = priv->canvas_id_osd1;
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canvas_id_osd1 = priv->canvas_id_osd1;
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