[PATCH v2] drm/msm/dp: add drm debug logs to dp_pm_resume/suspend

* [PATCH v2] drm/msm/dp: add drm debug logs to dp_pm_resume/suspend
@ 2021-08-10 15:29 Kuogee Hsieh
  2021-08-10 18:31 ` Stephen Boyd
  2021-08-10 18:33 ` Stephen Boyd
  0 siblings, 2 replies; 6+ messages in thread
From: Kuogee Hsieh @ 2021-08-10 15:29 UTC (permalink / raw)
  To: robdclark, sean, swboyd, vkoul, agross, bjorn.andersson
  Cc: abhinavk, aravindh, khsieh, freedreno, dri-devel, linux-arm-msm,
	linux-kernel

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>
---
 drivers/gpu/drm/msm/dp/dp_display.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 8a85613..870b926 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -1284,6 +1284,9 @@ 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 +1318,10 @@ static int dp_pm_resume(struct device *dev)
 	else
 		dp->dp_display.is_connected = false;
 
+	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);
 
 	return 0;
@@ -1330,6 +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))
@@ -1343,6 +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;
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project


^ permalink raw reply related	[flat|nested] 6+ messages in thread