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path: root/drivers/gpu/arm/mali400/r4p0_rel0/linux/mali_osk_pm.c
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Diffstat (limited to 'drivers/gpu/arm/mali400/r4p0_rel0/linux/mali_osk_pm.c')
-rw-r--r--drivers/gpu/arm/mali400/r4p0_rel0/linux/mali_osk_pm.c109
1 files changed, 109 insertions, 0 deletions
diff --git a/drivers/gpu/arm/mali400/r4p0_rel0/linux/mali_osk_pm.c b/drivers/gpu/arm/mali400/r4p0_rel0/linux/mali_osk_pm.c
new file mode 100644
index 00000000000..59130a19330
--- /dev/null
+++ b/drivers/gpu/arm/mali400/r4p0_rel0/linux/mali_osk_pm.c
@@ -0,0 +1,109 @@
+/**
+ * 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 <linux/version.h>
+#include "mali_osk.h"
+#include "mali_kernel_common.h"
+#include "mali_kernel_linux.h"
+
+static _mali_osk_atomic_t mali_pm_ref_count;
+
+void _mali_osk_pm_dev_enable(void)
+{
+ _mali_osk_atomic_init(&mali_pm_ref_count, 0);
+}
+
+void _mali_osk_pm_dev_disable(void)
+{
+ _mali_osk_atomic_term(&mali_pm_ref_count);
+}
+
+/* Can NOT run in atomic context */
+_mali_osk_errcode_t _mali_osk_pm_dev_ref_add(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;
+ }
+ _mali_osk_atomic_inc(&mali_pm_ref_count);
+ MALI_DEBUG_PRINT(4, ("Mali OSK PM: Power ref taken (%u)\n", _mali_osk_atomic_read(&mali_pm_ref_count)));
+#endif
+ return _MALI_OSK_ERR_OK;
+}
+
+/* Can run in atomic context */
+void _mali_osk_pm_dev_ref_dec(void)
+{
+#ifdef CONFIG_PM_RUNTIME
+ MALI_DEBUG_ASSERT_POINTER(mali_platform_device);
+ _mali_osk_atomic_dec(&mali_pm_ref_count);
+#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
+ MALI_DEBUG_PRINT(4, ("Mali OSK PM: Power ref released (%u)\n", _mali_osk_atomic_read(&mali_pm_ref_count)));
+#endif
+}
+
+/* Can run in atomic context */
+mali_bool _mali_osk_pm_dev_ref_add_no_power_on(void)
+{
+#ifdef CONFIG_PM_RUNTIME
+ u32 ref;
+ MALI_DEBUG_ASSERT_POINTER(mali_platform_device);
+ pm_runtime_get_noresume(&(mali_platform_device->dev));
+ ref = _mali_osk_atomic_read(&mali_pm_ref_count);
+ MALI_DEBUG_PRINT(4, ("Mali OSK PM: No-power ref taken (%u)\n", _mali_osk_atomic_read(&mali_pm_ref_count)));
+ return ref > 0 ? MALI_TRUE : MALI_FALSE;
+#else
+ return MALI_TRUE;
+#endif
+}
+
+/* Can run in atomic context */
+void _mali_osk_pm_dev_ref_dec_no_power_on(void)
+{
+#ifdef CONFIG_PM_RUNTIME
+ MALI_DEBUG_ASSERT_POINTER(mali_platform_device);
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
+ pm_runtime_put_autosuspend(&(mali_platform_device->dev));
+#else
+ pm_runtime_put(&(mali_platform_device->dev));
+#endif
+ MALI_DEBUG_PRINT(4, ("Mali OSK PM: No-power ref released (%u)\n", _mali_osk_atomic_read(&mali_pm_ref_count)));
+#endif
+}
+
+void _mali_osk_pm_dev_barrier(void)
+{
+#ifdef CONFIG_PM_RUNTIME
+ pm_runtime_barrier(&(mali_platform_device->dev));
+#endif
+}