drm/msm/dp: add drm debug logs to dp_pm_resume/suspend

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>

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index c67d583..419fd4a 100644 (file)
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -1280,6 +1280,9 @@ 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;
 
@@ -1311,6 +1314,10 @@ 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;
@@ -1326,6 +1333,9 @@ 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))
@@ -1339,6 +1349,9 @@ 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;