ARM: imx: cpuidle: use init/exit common routine

The code intializes the cpuidle driver at different places.
The cpuidle driver for :
  * imx5 : is in the pm-imx5.c, the init function is in cpuidle.c
  * imx6 : is in cpuidle-imx6q.c, the init function is in cpuidle.c
           and cpuidle-imx6q.c

Instead of having the cpuidle code spread across different files,
let's create a driver for each SoC and use the common register function.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/cpuidle-imx5.c b/arch/arm/mach-imx/cpuidle-imx5.c
new file mode 100644
index 000000000000..5a47e3c6172f
--- /dev/null
+++ b/arch/arm/mach-imx/cpuidle-imx5.c
@@ -0,0 +1,37 @@
+/*
+ * 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,
+                .flags            = CPUIDLE_FLAG_TIME_VALID,
+                .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);
+}