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drm/bridge: lt8912b: set hdmi or dvi mode

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[ Upstream commit 6dd1de12e1 ]

The Lontium LT8912 does have a setting for DVI or HDMI. This patch reads
from EDID what the display needs and sets it accordingly.

Fixes: 30e2ae943c ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Acked-by: Adrien Grassein <adrien.grassein@gmail.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220922124306.34729-3-dev@pschenker.ch
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Philippe Schenker
2022-09-22 14:43:04 +02:00
committed by Greg Kroah-Hartman
parent 473f653a86
commit e103b0e839
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/bridge/lontium-lt8912b.c
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@@ -321,6 +321,8 @@ static int lt8912_video_setup(struct lt8912 *lt)
vsync_activehigh ? BIT(0) : 0);
ret |= regmap_update_bits(lt->regmap[I2C_MAIN], 0xab, BIT(1),
hsync_activehigh ? BIT(1) : 0);
ret |= regmap_update_bits(lt->regmap[I2C_MAIN], 0xb2, BIT(0),
lt->connector.display_info.is_hdmi ? BIT(0) : 0);
return ret;
}