From 9a0f262948acaf917fe4cf46aef58fc58d73f3ba Mon Sep 17 00:00:00 2001
From: Kuogee Hsieh <khsieh@codeaurora.org>
Date: Tue, 10 Aug 2021 08:29:22 -0700
Subject: drm/msm/dp: add drm debug logs to dp_pm_resume/suspend
Git-commit: 26ae419cd9eca4268c267a1910bdac4ae6ef4896
Patch-mainline: v5.15-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
Changes in V2:
-- correct Fixes text
-- drop commit text
Fixes: 601f0479c583 ("drm/msm/dp: add logs across DP driver for ease of debugging")
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1628609362-2109-1-git-send-email-khsieh@codeaurora.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/msm/dp/dp_display.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index fdd45dab12bc..fbe4c2cd52a3 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -1281,6 +1281,9 @@ static int dp_pm_resume(struct device *dev)
mutex_lock(&dp->event_mutex);
+ DRM_DEBUG_DP("Before, core_inited=%d power_on=%d\n",
+ dp->core_initialized, dp_display->power_on);
+
/* start from disconnected state */
dp->hpd_state = ST_DISCONNECTED;
@@ -1315,6 +1318,9 @@ static int dp_pm_resume(struct device *dev)
dp_display_handle_plugged_change(g_dp_display,
dp->dp_display.is_connected);
+ DRM_DEBUG_DP("After, sink_count=%d is_connected=%d core_inited=%d power_on=%d\n",
+ dp->link->sink_count, dp->dp_display.is_connected,
+ dp->core_initialized, dp_display->power_on);
mutex_unlock(&dp->event_mutex);
@@ -1331,6 +1337,9 @@ static int dp_pm_suspend(struct device *dev)
mutex_lock(&dp->event_mutex);
+ DRM_DEBUG_DP("Before, core_inited=%d power_on=%d\n",
+ dp->core_initialized, dp_display->power_on);
+
if (dp->core_initialized == true) {
/* mainlink enabled */
if (dp_power_clk_status(dp->power, DP_CTRL_PM))
@@ -1344,6 +1353,9 @@ static int dp_pm_suspend(struct device *dev)
/* host_init will be called at pm_resume */
dp->core_initialized = false;
+ DRM_DEBUG_DP("After, core_inited=%d power_on=%d\n",
+ dp->core_initialized, dp_display->power_on);
+
mutex_unlock(&dp->event_mutex);
return 0;
--
2.38.1