From b672505d824233c76eef6ef728d0c700fde183df Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Mon, 13 Jun 2022 16:47:41 +0200
Subject: drm/vc4: dsi: Register dsi0 as the correct vc4 encoder type
Git-commit: 4d9273c978d4c1af15d7874c10c732ec83d444d0
Patch-mainline: v6.0-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225 jsc#PED-2849
vc4_dsi was registering both dsi0 and dsi1 as VC4_ENCODER_TYPE_DSI1
which seemed to work OK for a single DSI display, but fails
if there are two DSI displays connected.
Update to register the correct type.
Fixes: 4078f5757144 ("drm/vc4: Add DSI driver")
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://lore.kernel.org/r/20220613144800.326124-15-maxime@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/vc4/vc4_dsi.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c
index 81a6c4e9576d..97a258c934af 100644
--- a/drivers/gpu/drm/vc4/vc4_dsi.c
+++ b/drivers/gpu/drm/vc4/vc4_dsi.c
@@ -1518,7 +1518,8 @@ static int vc4_dsi_bind(struct device *dev, struct device *master, void *data)
return -ENOMEM;
INIT_LIST_HEAD(&dsi->bridge_chain);
- vc4_dsi_encoder->base.type = VC4_ENCODER_TYPE_DSI1;
+ vc4_dsi_encoder->base.type = dsi->variant->port ?
+ VC4_ENCODER_TYPE_DSI1 : VC4_ENCODER_TYPE_DSI0;
vc4_dsi_encoder->dsi = dsi;
dsi->encoder = &vc4_dsi_encoder->base.base;
--
2.38.1