Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / arm / mach-imx / cpuidle-imx5.c

diff --git a/kernel/arch/arm/mach-imx/cpuidle-imx5.c b/kernel/arch/arm/mach-imx/cpuidle-imx5.c
new file mode 100644 (file)
index 0000000..3feca52
--- /dev/null
+++ b/kernel/arch/arm/mach-imx/cpuidle-imx5.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2012 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/cpuidle.h>
+#include <linux/module.h>
+#include <asm/system_misc.h>
+
+static int imx5_cpuidle_enter(struct cpuidle_device *dev,
+                             struct cpuidle_driver *drv, int index)
+{
+       arm_pm_idle();
+       return index;
+}
+
+static struct cpuidle_driver imx5_cpuidle_driver = {
+       .name             = "imx5_cpuidle",
+       .owner            = THIS_MODULE,
+       .states[0] = {
+               .enter            = imx5_cpuidle_enter,
+               .exit_latency     = 2,
+               .target_residency = 1,
+               .name             = "IMX5 SRPG",
+               .desc             = "CPU state retained,powered off",
+       },
+       .state_count = 1,
+};
+
+int __init imx5_cpuidle_init(void)
+{
+       return cpuidle_register(&imx5_cpuidle_driver, NULL);
+}