1 files changed, 139 insertions, 0 deletions
diff --git a/drivers/gpu/arm/mali400/r4p0_rel0/common/mali_pm.c b/drivers/gpu/arm/mali400/r4p0_rel0/common/mali_pm.c
new file mode 100644
index 00000000000..8169f10b70f
--- /dev/null
+++ b/drivers/gpu/arm/mali400/r4p0_rel0/common/mali_pm.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2011-2012 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.
+ */
+
+#include "mali_pm.h"
+#include "mali_kernel_common.h"
+#include "mali_osk.h"
+#include "mali_gp_scheduler.h"
+#include "mali_pp_scheduler.h"
+#include "mali_scheduler.h"
+#include "mali_kernel_utilization.h"
+#include "mali_group.h"
+#include "mali_pm_domain.h"
+#include "mali_pmu.h"
+
+static mali_bool mali_power_on = MALI_FALSE;
+
+_mali_osk_errcode_t mali_pm_initialize(void)
+{
+	_mali_osk_pm_dev_enable();
+	return _MALI_OSK_ERR_OK;
+}
+
+void mali_pm_terminate(void)
+{
+	mali_pm_domain_terminate();
+	_mali_osk_pm_dev_disable();
+}
+
+/* Reset GPU after power up */
+static void mali_pm_reset_gpu(void)
+{
+	/* Reset all L2 caches */
+	mali_l2_cache_reset_all();
+
+	/* Reset all groups */
+	mali_scheduler_reset_all_groups();
+}
+
+void mali_pm_os_suspend(void)
+{
+	MALI_DEBUG_PRINT(3, ("Mali PM: OS suspend\n"));
+	mali_gp_scheduler_suspend();
+	mali_pp_scheduler_suspend();
+	mali_utilization_suspend();
+/* MALI_SEC */
+#if !defined(CONFIG_PM_RUNTIME)
+	mali_group_power_off(MALI_TRUE);
+	mali_power_on = MALI_FALSE;
+#endif
+}
+
+void mali_pm_os_resume(void)
+{
+#if !defined(CONFIG_PM_RUNTIME)
+	struct mali_pmu_core *pmu = mali_pmu_get_global_pmu_core();
+	mali_bool do_reset = MALI_FALSE;
+#endif
+
+	MALI_DEBUG_PRINT(3, ("Mali PM: OS resume\n"));
+/* MALI_SEC */
+/******************************************************************
+ *
+ * <2013. 08. 23>
+ *  In Pegasus prime, PMU is not enabled(Power off) while
+ * system wake up(suspend -> resume).
+ *
+ * Because PMU power is off, GPU does not work.
+ * Therefore code is commented like below.
+ *
+ *****************************************************************/
+#if !defined(CONFIG_PM_RUNTIME)
+	if (MALI_TRUE != mali_power_on)
+	{
+		do_reset = MALI_TRUE;
+	}
+
+	if (NULL != pmu) {
+		mali_pmu_reset(pmu);
+	}
+
+	mali_power_on = MALI_TRUE;
+	_mali_osk_write_mem_barrier();
+
+	if (do_reset) {
+		mali_pm_reset_gpu();
+		mali_group_power_on();
+	}
+#endif
+	mali_gp_scheduler_resume();
+	mali_pp_scheduler_resume();
+}
+
+void mali_pm_runtime_suspend(void)
+{
+	MALI_DEBUG_PRINT(3, ("Mali PM: Runtime suspend\n"));
+	mali_group_power_off(MALI_TRUE);
+	mali_power_on = MALI_FALSE;
+}
+
+void mali_pm_runtime_resume(void)
+{
+	struct mali_pmu_core *pmu = mali_pmu_get_global_pmu_core();
+	mali_bool do_reset = MALI_FALSE;
+
+	MALI_DEBUG_PRINT(3, ("Mali PM: Runtime resume\n"));
+
+	if (MALI_TRUE != mali_power_on) {
+		do_reset = MALI_TRUE;
+	}
+
+	if (NULL != pmu) {
+		mali_pmu_reset(pmu);
+	}
+
+	mali_power_on = MALI_TRUE;
+	_mali_osk_write_mem_barrier();
+
+	if (do_reset) {
+		mali_pm_reset_gpu();
+		mali_group_power_on();
+	}
+}
+
+void mali_pm_set_power_is_on(void)
+{
+	mali_power_on = MALI_TRUE;
+}
+
+mali_bool mali_pm_is_power_on(void)
+{
+	return mali_power_on;
+}