Add drm debug logs to dp_pm_resume and dp_pm_suspend to help debug suspend/resume issues.

Fixes: 355ab7428f09 ("drm/msm/dp: add debug logs to dp_pm_resume/suspend") 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;