From dadb40faf09fdf5ad11a3e3998ab692cdcd1fbb6 Mon Sep 17 00:00:00 2001
From: Kuogee Hsieh <quic_khsieh@quicinc.com>
Date: Wed, 6 Jul 2022 12:32:08 -0700
Subject: drm/msm/dp: make eDP panel as the first connected connector
Git-commit: deffa2d75db7e7a9a1fe3dad4f99310bff7b6449
Patch-mainline: v6.0-rc4
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
Alt-commit: c51720a6d0b402ed418c904500f78ce1897a93bc
Some userspace presumes that the first connected connector is the main
display, where it's supposed to display e.g. the login screen. For
laptops, this should be the main panel.
This patch call drm_helper_move_panel_connectors_to_head() after
drm_bridge_connector_init() to make sure eDP stay at head of
connected connector list. This fixes unexpected corruption happen
at eDP panel if eDP is not placed at head of connected connector
list.
Changes in v2:
-- move drm_helper_move_panel_connectors_to_head() to
dpu_kms_drm_obj_init()
Changes in v4:
-- move drm_helper_move_panel_connectors_to_head() to msm_drm_init()
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Fixes: ef7837ff091c ("drm/msm/dp: Add DP controllers for sc7280")
Patchwork: https://patchwork.freedesktop.org/patch/492581/
Link: https://lore.kernel.org/r/1657135928-31195-1-git-send-email-quic_khsieh@quicinc.com
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/msm/msm_drv.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 1ed4cd09dbf8..16884db272de 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -469,6 +469,8 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv)
}
}
+ drm_helper_move_panel_connectors_to_head(ddev);
+
ddev->mode_config.funcs = &mode_config_funcs;
ddev->mode_config.helper_private = &mode_config_helper_funcs;
--
2.38.1