disp: msm: sde: deprecate idle notify work scheduling

This change deprecates idle notify work for video mode
since idle timer will be maintained by userspace.
As part of idle notify work, syscache state is changed from
CACHE_STATE_NORMAL to CACHE_STATE_PRE_CACHE along with
notifying to the userspace. This change removes
CACHE_STATE_PRE_CACHE in the state machine and state is
updated from CACHE_STATE_NORMAL to CACHE_STATE_FRAME_WRITE
whenever the cache property is set.

Change-Id: If3b2c34be954cb625aca76da81fd854c077a8250
Signed-off-by: Yashwanth <yvulapu@codeaurora.org>

msm/sde/sde_crtc.h

@@ -80,7 +80,6 @@ enum sde_crtc_idle_pc_state {
  * CACHE_STATE_DISABLED: sys cache has been disabled
  * CACHE_STATE_ENABLED: sys cache has been enabled
  * CACHE_STATE_NORMAL: sys cache is normal state
- * CACHE_STATE_PRE_CACHE: frame cache is being prepared
  * CACHE_STATE_FRAME_WRITE: sys cache is being written to
  * CACHE_STATE_FRAME_READ: sys cache is being read
  */
@@ -88,7 +87,6 @@ enum sde_crtc_cache_state {
 	CACHE_STATE_DISABLED,
 	CACHE_STATE_ENABLED,
 	CACHE_STATE_NORMAL,
-	CACHE_STATE_PRE_CACHE,
 	CACHE_STATE_FRAME_WRITE,
 	CACHE_STATE_FRAME_READ
 };
@@ -304,7 +302,6 @@ struct sde_frame_data {
  * @misr_reconfigure : boolean entry indicates misr reconfigure status
  * @misr_frame_count  : misr frame count provided by client
  * @misr_data     : store misr data before turning off the clocks.
- * @idle_notify_work: delayed worker to notify idle timeout to user space
  * @power_event   : registered power event handle
  * @cur_perf      : current performance committed to clock/bandwidth driver
  * @plane_mask_old: keeps track of the planes used in the previous commit
@@ -394,7 +391,6 @@ struct sde_crtc {
 	bool misr_enable_debugfs;
 	bool misr_reconfigure;
 	u32 misr_frame_count;
-	struct kthread_delayed_work idle_notify_work;
 
 	struct sde_power_event *power_event;