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path: root/drivers/gpu/arm/utgard/linux/mali_osk_pm.c
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Diffstat (limited to 'drivers/gpu/arm/utgard/linux/mali_osk_pm.c')
-rw-r--r--drivers/gpu/arm/utgard/linux/mali_osk_pm.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/drivers/gpu/arm/utgard/linux/mali_osk_pm.c b/drivers/gpu/arm/utgard/linux/mali_osk_pm.c
new file mode 100644
index 000000000000..21180d33fe75
--- /dev/null
+++ b/drivers/gpu/arm/utgard/linux/mali_osk_pm.c
@@ -0,0 +1,83 @@
+/**
+ * Copyright (C) 2010-2015 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 <linux/version.h>
+#include "mali_osk.h"
+#include "mali_kernel_common.h"
+#include "mali_kernel_linux.h"
+
+/* Can NOT run in atomic context */
+_mali_osk_errcode_t _mali_osk_pm_dev_ref_get_sync(void)
+{
+#ifdef CONFIG_PM_RUNTIME
+ int err;
+ MALI_DEBUG_ASSERT_POINTER(mali_platform_device);
+ err = pm_runtime_get_sync(&(mali_platform_device->dev));
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37))
+ pm_runtime_mark_last_busy(&(mali_platform_device->dev));
+#endif
+ if (0 > err) {
+ MALI_PRINT_ERROR(("Mali OSK PM: pm_runtime_get_sync() returned error code %d\n", err));
+ return _MALI_OSK_ERR_FAULT;
+ }
+#endif
+ return _MALI_OSK_ERR_OK;
+}
+
+/* Can run in atomic context */
+_mali_osk_errcode_t _mali_osk_pm_dev_ref_get_async(void)
+{
+#ifdef CONFIG_PM_RUNTIME
+ int err;
+ MALI_DEBUG_ASSERT_POINTER(mali_platform_device);
+ err = pm_runtime_get(&(mali_platform_device->dev));
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37))
+ pm_runtime_mark_last_busy(&(mali_platform_device->dev));
+#endif
+ if (0 > err && -EINPROGRESS != err) {
+ MALI_PRINT_ERROR(("Mali OSK PM: pm_runtime_get() returned error code %d\n", err));
+ return _MALI_OSK_ERR_FAULT;
+ }
+#endif
+ return _MALI_OSK_ERR_OK;
+}
+
+
+/* Can run in atomic context */
+void _mali_osk_pm_dev_ref_put(void)
+{
+#ifdef CONFIG_PM_RUNTIME
+ MALI_DEBUG_ASSERT_POINTER(mali_platform_device);
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37))
+ pm_runtime_mark_last_busy(&(mali_platform_device->dev));
+ pm_runtime_put_autosuspend(&(mali_platform_device->dev));
+#else
+ pm_runtime_put(&(mali_platform_device->dev));
+#endif
+#endif
+}
+
+void _mali_osk_pm_dev_barrier(void)
+{
+#ifdef CONFIG_PM_RUNTIME
+ pm_runtime_barrier(&(mali_platform_device->dev));
+#endif
+}