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

Kuogee Hsieh
2021-08-10T15:30:11Z

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;
--
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