From: Pauli Nieminen <ext-pauli.nieminen@nokia.com>
Date: Tue, 2 Nov 2010 08:40:10 +0000 (+0200)
Subject: gpu: pvr: Expose new display events to user space
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1acf4f070d84a6a1fe59668479c5723680a661ed;p=sgx.git

gpu: pvr: Expose new display events to user space

This exposes the new dss event that can be used for more fine grained
synchronization with display updates.

This change is backward compatible with old user space.

Signed-off-by: Pauli Nieminen <ext-pauli.nieminen@nokia.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@nokia.com>
Signed-off-by: Imre Deak <imre.deak@nokia.com>
---

diff --git a/pvr/bridged_sgx_bridge.c b/pvr/bridged_sgx_bridge.c
index 30b7a73..b2dae37 100644
--- a/pvr/bridged_sgx_bridge.c
+++ b/pvr/bridged_sgx_bridge.c
@@ -1053,10 +1053,12 @@ int SGX2DQueryBlitsCompleteBW(struct file *filp, u32 ui32BridgeID,
 	if (psRetOUT->eError != PVRSRV_OK)
 		return 0;
 
-	if (ps2DQueryBltsCompleteIN->type == _PVR_SYNC_WAIT_FLIP) {
+	if (ps2DQueryBltsCompleteIN->type == _PVR_SYNC_WAIT_FLIP ||
+	    ps2DQueryBltsCompleteIN->type == _PVR_SYNC_WAIT_UPDATE) {
 		if (pvr_flip_event_req(priv,
 				       (long)ps2DQueryBltsCompleteIN->
 						       hKernSyncInfo,
+				       ps2DQueryBltsCompleteIN->type,
 				       ps2DQueryBltsCompleteIN->user_data))
 			psRetOUT->eError = PVRSRV_ERROR_OUT_OF_MEMORY;
 
diff --git a/pvr/pvr_events.c b/pvr/pvr_events.c
index bb851cb..77d55c7 100644
--- a/pvr/pvr_events.c
+++ b/pvr/pvr_events.c
@@ -1,6 +1,7 @@
 
 #include "pvr_events.h"
 #include "servicesint.h"
+#include "sgx_bridge.h"
 
 #include <linux/wait.h>
 #include <linux/sched.h>
@@ -86,7 +87,8 @@ static void pvr_signal_flip_event(struct pvr_pending_flip_event *e,
 }
 
 int pvr_flip_event_req(struct PVRSRV_FILE_PRIVATE_DATA *priv,
-			 unsigned int overlay, u64 user_data)
+			 unsigned int overlay,
+			 enum pvr_sync_wait_seq_type type, u64 user_data)
 {
 	struct pvr_pending_flip_event *e;
 	struct timeval now;
@@ -96,7 +98,18 @@ int pvr_flip_event_req(struct PVRSRV_FILE_PRIVATE_DATA *priv,
 	if (e == NULL)
 		return -ENOMEM;
 
-	e->event.base.type = PVR_EVENT_FLIP;
+	switch (type) {
+	case _PVR_SYNC_WAIT_FLIP:
+		e->event.base.type = PVR_EVENT_FLIP;
+		e->dss_event = OMAP_DSS_NOTIFY_GO_OVL;
+		break;
+	case _PVR_SYNC_WAIT_UPDATE:
+		e->event.base.type = PVR_EVENT_UPDATE;
+		e->dss_event = OMAP_DSS_NOTIFY_UPDATE_OVL;
+		break;
+	default:
+		BUG();
+	}
 	e->event.base.length = sizeof(e->event);
 	e->base.event = &e->event.base;
 	e->event.overlay = overlay;
@@ -119,7 +132,7 @@ int pvr_flip_event_req(struct PVRSRV_FILE_PRIVATE_DATA *priv,
 
 	spin_unlock_irqrestore(&event_lock, flags);
 
-	return omap_dss_request_notify(OMAP_DSS_NOTIFY_GO_OVL, overlay);
+	return omap_dss_request_notify(e->dss_event, overlay);
 }
 
 static bool pvr_dequeue_event(struct PVRSRV_FILE_PRIVATE_DATA *priv,
@@ -220,14 +233,13 @@ static int dss_notifier_callback(struct notifier_block *nb,
 	unsigned long flags;
 	long overlay = (long) data;
 
-	if (event != OMAP_DSS_NOTIFY_GO_OVL)
-		return 0;
-
 	do_gettimeofday(&now);
 
 	spin_lock_irqsave(&event_lock, flags);
 
 	list_for_each_entry_safe(e, t, &flip_wait_list, base.link) {
+		if (!(e->dss_event & event))
+			continue;
 		if (e->event.overlay != overlay)
 			continue;
 
diff --git a/pvr/pvr_events.h b/pvr/pvr_events.h
index 5183ed3..faa5b01 100644
--- a/pvr/pvr_events.h
+++ b/pvr/pvr_events.h
@@ -24,6 +24,7 @@ struct pvr_event {
 
 #define PVR_EVENT_SYNC 0x01
 #define PVR_EVENT_FLIP 0x02
+#define PVR_EVENT_UPDATE 0x03 /* also uses struct pvr_event_flip */
 
 /*
  * Every buffer used as a render target has a 'PVRSRV_KERNEL_SYNC_INFO'
@@ -73,8 +74,11 @@ struct pvr_pending_sync_event {
 struct pvr_pending_flip_event {
 	struct pvr_pending_event base;
 	struct pvr_event_flip event;
+	unsigned int dss_event;
 };
 
+enum pvr_sync_wait_seq_type;
+
 void pvr_init_events(void);
 void pvr_exit_events(void);
 
@@ -82,7 +86,8 @@ int pvr_sync_event_req(struct PVRSRV_FILE_PRIVATE_DATA *priv,
 			const struct PVRSRV_KERNEL_SYNC_INFO *sync_info,
 			u64 user_data);
 int pvr_flip_event_req(struct PVRSRV_FILE_PRIVATE_DATA *priv,
-			 unsigned int overlay, u64 user_data);
+			 unsigned int overlay,
+			 enum pvr_sync_wait_seq_type type, u64 user_data);
 ssize_t pvr_read(struct file *filp, char __user *buf, size_t count,
 		loff_t *off);
 unsigned int pvr_poll(struct file *filp, struct poll_table_struct *wait);
diff --git a/pvr/sgx_bridge.h b/pvr/sgx_bridge.h
index 8dfdd56..9b83616 100644
--- a/pvr/sgx_bridge.h
+++ b/pvr/sgx_bridge.h
@@ -221,6 +221,7 @@ enum pvr_sync_wait_seq_type {
 	_PVR_SYNC_WAIT_NONBLOCK,
 	_PVR_SYNC_WAIT_EVENT,
 	_PVR_SYNC_WAIT_FLIP,
+	_PVR_SYNC_WAIT_UPDATE,
 };
 
 struct PVRSRV_BRIDGE_IN_2DQUERYBLTSCOMPLETE {