msm: kgsl: Add idlestats sleep event notification

Change-Id: Ie632d3f44661575ad8c7b41f064eff5f3b068f62
Signed-off-by: Lucille Sylvester <lsylvest@codeaurora.org>
diff --git a/drivers/gpu/msm/kgsl_pwrscale_idlestats.c b/drivers/gpu/msm/kgsl_pwrscale_idlestats.c
index c4dcb22..923b4fe 100644
--- a/drivers/gpu/msm/kgsl_pwrscale_idlestats.c
+++ b/drivers/gpu/msm/kgsl_pwrscale_idlestats.c
@@ -82,6 +82,13 @@
 	msm_idle_stats_idle_start(&priv->idledev);
 }
 
+static void idlestats_sleep(struct kgsl_device *device,
+			struct kgsl_pwrscale *pwrscale)
+{
+	struct idlestats_priv *priv = pwrscale->priv;
+	priv->idledev.stats->event |= MSM_IDLE_STATS_EVENT_IDLE_TIMER_EXPIRED;
+}
+
 static int idlestats_init(struct kgsl_device *device,
 		     struct kgsl_pwrscale *pwrscale)
 {
@@ -130,5 +137,6 @@
 	.init = idlestats_init,
 	.idle = idlestats_idle,
 	.busy = idlestats_busy,
+	.sleep = idlestats_sleep,
 	.close = idlestats_close
 };
diff --git a/include/linux/idle_stats_device.h b/include/linux/idle_stats_device.h
index 0b1ee39..7906d18 100644
--- a/include/linux/idle_stats_device.h
+++ b/include/linux/idle_stats_device.h
@@ -9,6 +9,7 @@
 #define MSM_IDLE_STATS_EVENT_BUSY_TIMER_EXPIRED_RESET 2
 #define MSM_IDLE_STATS_EVENT_COLLECTION_NEARLY_FULL   4
 #define MSM_IDLE_STATS_EVENT_COLLECTION_FULL          8
+#define MSM_IDLE_STATS_EVENT_IDLE_TIMER_EXPIRED      16
 
 /*
  * All time, timer, and time interval values are in units of