1 files changed, 83 insertions, 0 deletions
diff --git a/drivers/media/video/samsung/mali/linux/mali_osk_pm.c b/drivers/media/video/samsung/mali/linux/mali_osk_pm.c
new file mode 100644
index 0000000..491a603
--- /dev/null
+++ b/drivers/media/video/samsung/mali/linux/mali_osk_pm.c
@@ -0,0 +1,83 @@
+/**
+ * Copyright (C) 2010-2012 ARM Limited. All rights reserved.
+ * 
+ * This program is free software and is provided to you under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
+ * 
+ * A copy of the licence is included with the program, and can also be obtained from Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+/**
+ * @file mali_osk_pm.c
+ * Implementation of the callback functions from common power management
+ */
+
+#include <linux/sched.h>
+
+#ifdef CONFIG_PM_RUNTIME
+#include <linux/pm_runtime.h>
+#endif /* CONFIG_PM_RUNTIME */
+#include <linux/platform_device.h>
+#include "mali_platform.h"
+#include "mali_osk.h"
+#include "mali_uk_types.h"
+#include "mali_kernel_common.h"
+#include "mali_kernel_license.h"
+#include "mali_linux_pm.h"
+#include "mali_kernel_license.h"
+
+#if ! MALI_LICENSE_IS_GPL
+#undef CONFIG_PM_RUNTIME
+#endif
+
+extern struct platform_device mali_gpu_device;
+
+#ifdef CONFIG_PM_RUNTIME
+static mali_bool have_runtime_reference = MALI_FALSE;
+#endif
+
+void _mali_osk_pm_dev_enable(void)
+{
+#ifdef CONFIG_PM_RUNTIME
+	pm_runtime_enable(&(mali_gpu_device.dev));
+#endif
+}
+
+/* NB: Function is not thread safe */
+_mali_osk_errcode_t _mali_osk_pm_dev_idle(void)
+{
+#ifdef CONFIG_PM_RUNTIME
+	if (MALI_TRUE == have_runtime_reference)
+	{
+		int err;
+		err = pm_runtime_put_sync(&(mali_gpu_device.dev));	
+		if (0 > err)
+		{
+			MALI_PRINT_ERROR(("OSK PM: pm_runtime_put_sync() returned error code %d\n", err));	
+			return _MALI_OSK_ERR_FAULT;
+		}
+		have_runtime_reference = MALI_FALSE;
+	}
+#endif
+	return _MALI_OSK_ERR_OK;
+}
+
+/* NB: Function is not thread safe */
+_mali_osk_errcode_t _mali_osk_pm_dev_activate(void)
+{
+#ifdef CONFIG_PM_RUNTIME
+	if (MALI_TRUE != have_runtime_reference)
+	{
+		int err;
+		err = pm_runtime_get_sync(&(mali_gpu_device.dev));
+		if (0 > err)
+		{
+			MALI_PRINT_ERROR(("OSK PM: pm_runtime_get_sync() returned error code %d\n", err));	
+			return _MALI_OSK_ERR_FAULT;
+		}
+		have_runtime_reference = MALI_TRUE;
+	}
+#endif
+	return _MALI_OSK_ERR_OK;
+}