From 6dd1de12e1243f2013e4fabf31e99e63b1a860d0 Mon Sep 17 00:00:00 2001
From: Philippe Schenker <philippe.schenker@toradex.com>
Date: Thu, 22 Sep 2022 14:43:04 +0200
Subject: [PATCH] drm/bridge: lt8912b: set hdmi or dvi mode
Git-commit: 6dd1de12e1243f2013e4fabf31e99e63b1a860d0
Patch-mainline: v6.0
References: git-fixes
Alt-commit: d25404a359b24a887db56b52064b754f79921bb7
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: 30e2ae943c26 ("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
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/bridge/lontium-lt8912b.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c
index 0fd3472e767c..6a4bb7422176 100644
--- a/drivers/gpu/drm/bridge/lontium-lt8912b.c
+++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c
@@ -323,6 +323,8 @@ 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;
}
--
2.35.3