video: tegra: host: add public APIs for power & syncpoint management

- add public APIs for power & sync-point management
- all these APIs end with string _ext
- all these APIs can be found in linux/nvhost.h
- all these APIs take nvhost_device as first argument
- all these APIs are based on the fact that host1x hardware
driver is parent of all the host1x client driver
- this allows clients of host1x which are outside host1x
driver code to just include nvhost.h & use host1x driver
interfaces
- this also hides the implementation details of power &
sync-point inside host1x driver code
- move sync point ids for dc and nvavp to nvhost.h

Bug 961009

Change-Id: I1a9ca074df87656c4d4bd246853e039a7850d56a
Signed-off-by: Mayuresh Kulkarni <mkulkarni@nvidia.com>
Reviewed-on: http://git-master/r/109219
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit

1 files changed, 18 insertions, 3 deletions

diff --git a/drivers/video/tegra/host/nvhost_acm.c b/drivers/video/tegra/host/nvhost_acm.c
index 37b81d707639..06005c423a21 100644
--- a/drivers/video/tegra/host/nvhost_acm.c
+++ b/drivers/video/tegra/host/nvhost_acm.c
@@ -31,9 +31,9 @@
 #include <mach/clk.h>
 #include <mach/hardware.h>
 
-#define ACM_SUSPEND_WAIT_FOR_IDLE_TIMEOUT (2 * HZ)
-#define POWERGATE_DELAY 10
-#define MAX_DEVID_LENGTH 16
+#define ACM_SUSPEND_WAIT_FOR_IDLE_TIMEOUT	(2 * HZ)
+#define POWERGATE_DELAY 			10
+#define MAX_DEVID_LENGTH			16
 
 DEFINE_MUTEX(client_list_lock);
 
@@ -610,3 +610,18 @@ void nvhost_module_deinit(struct nvhost_device *dev)
 	dev->powerstate = NVHOST_POWER_STATE_DEINIT;
 }
 
+/* public host1x power management APIs */
+bool nvhost_module_powered_ext(struct nvhost_device *dev)
+{
+	return nvhost_module_powered(dev);
+}
+
+void nvhost_module_busy_ext(struct nvhost_device *dev)
+{
+	nvhost_module_busy(dev);
+}
+
+void nvhost_module_idle_ext(struct nvhost_device *dev)
+{
+	nvhost_module_idle(dev);
+}