msm: kgsl: Add support for Android's sync point framework
The Android sync point framework will replace the synchronization
previously implemented by genlock. This change implements the KGSL
component of the sync point framework by creating a fence that is
automatically signaled by KGSL when it's timestamp expires. The
fence FD is returned to the user driver so that another process
can wait for the sync point.
Change-Id: Ifee38dfde00e551f3524f7a37833938dcdb64905
Signed-off-by: Jeff Boody <jboody@codeaurora.org>
diff --git a/drivers/gpu/msm/kgsl_device.h b/drivers/gpu/msm/kgsl_device.h
index 2a2e916..2ca3a4f 100644
--- a/drivers/gpu/msm/kgsl_device.h
+++ b/drivers/gpu/msm/kgsl_device.h
@@ -22,6 +22,7 @@
#include "kgsl_pwrctrl.h"
#include "kgsl_log.h"
#include "kgsl_pwrscale.h"
+#include <linux/sync.h>
#define KGSL_TIMEOUT_NONE 0
#define KGSL_TIMEOUT_DEFAULT 0xFFFFFFFF
@@ -236,6 +237,12 @@
* context was responsible for causing it
*/
unsigned int reset_status;
+
+ /*
+ * Timeline used to create fences that can be signaled when a
+ * sync_pt timestamp expires.
+ */
+ struct sync_timeline *timeline;
};
struct kgsl_process_private {