1 files changed, 6 insertions, 41 deletions

diff --git a/arch/arm/mach-tegra/cpuidle-tegra30.c b/arch/arm/mach-tegra/cpuidle-tegra30.c
index 5e8cbf5b799f..3cf9aca5f3ea 100644
--- a/arch/arm/mach-tegra/cpuidle-tegra30.c
+++ b/arch/arm/mach-tegra/cpuidle-tegra30.c
@@ -24,6 +24,7 @@
 #include <linux/cpuidle.h>
 #include <linux/cpu_pm.h>
 #include <linux/clockchips.h>
+#include <linux/clk/tegra.h>
 
 #include <asm/cpuidle.h>
 #include <asm/proc-fns.h>
@@ -32,7 +33,6 @@
 
 #include "pm.h"
 #include "sleep.h"
-#include "tegra_cpu_car.h"
 
 #ifdef CONFIG_PM_SLEEP
 static int tegra30_idle_lp2(struct cpuidle_device *dev,
@@ -43,7 +43,6 @@ static int tegra30_idle_lp2(struct cpuidle_device *dev,
 static struct cpuidle_driver tegra_idle_driver = {
 	.name = "tegra_idle",
 	.owner = THIS_MODULE,
-	.en_core_tk_irqen = 1,
 #ifdef CONFIG_PM_SLEEP
 	.state_count = 2,
 #else
@@ -65,17 +64,11 @@ static struct cpuidle_driver tegra_idle_driver = {
 	},
 };
 
-static DEFINE_PER_CPU(struct cpuidle_device, tegra_idle_device);
-
 #ifdef CONFIG_PM_SLEEP
 static bool tegra30_cpu_cluster_power_down(struct cpuidle_device *dev,
 					   struct cpuidle_driver *drv,
 					   int index)
 {
-	struct cpuidle_state *state = &drv->states[index];
-	u32 cpu_on_time = state->exit_latency;
-	u32 cpu_off_time = state->target_residency - state->exit_latency;
-
 	/* All CPUs entering LP2 is not working.
 	 * Don't let CPU0 enter LP2 when any secondary CPU is online.
 	 */
@@ -86,7 +79,7 @@ static bool tegra30_cpu_cluster_power_down(struct cpuidle_device *dev,
 
 	clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &dev->cpu);
 
-	tegra_idle_lp2_last(cpu_on_time, cpu_off_time);
+	tegra_idle_lp2_last();
 
 	clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &dev->cpu);
 
@@ -102,12 +95,8 @@ static bool tegra30_cpu_core_power_down(struct cpuidle_device *dev,
 
 	smp_wmb();
 
-	save_cpu_arch_register();
-
 	cpu_suspend(0, tegra30_sleep_cpu_secondary_finish);
 
-	restore_cpu_arch_register();
-
 	clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &dev->cpu);
 
 	return true;
@@ -121,9 +110,9 @@ static inline bool tegra30_cpu_core_power_down(struct cpuidle_device *dev,
 }
 #endif
 
-static int __cpuinit tegra30_idle_lp2(struct cpuidle_device *dev,
-				      struct cpuidle_driver *drv,
-				      int index)
+static int tegra30_idle_lp2(struct cpuidle_device *dev,
+			    struct cpuidle_driver *drv,
+			    int index)
 {
 	u32 cpu = is_smp() ? cpu_logical_map(dev->cpu) : dev->cpu;
 	bool entered_lp2 = false;
@@ -157,32 +146,8 @@ static int __cpuinit tegra30_idle_lp2(struct cpuidle_device *dev,
 
 int __init tegra30_cpuidle_init(void)
 {
-	int ret;
-	unsigned int cpu;
-	struct cpuidle_device *dev;
-	struct cpuidle_driver *drv = &tegra_idle_driver;
-
 #ifdef CONFIG_PM_SLEEP
 	tegra_tear_down_cpu = tegra30_tear_down_cpu;
 #endif
-
-	ret = cpuidle_register_driver(&tegra_idle_driver);
-	if (ret) {
-		pr_err("CPUidle driver registration failed\n");
-		return ret;
-	}
-
-	for_each_possible_cpu(cpu) {
-		dev = &per_cpu(tegra_idle_device, cpu);
-		dev->cpu = cpu;
-
-		dev->state_count = drv->state_count;
-		ret = cpuidle_register_device(dev);
-		if (ret) {
-			pr_err("CPU%u: CPUidle device registration failed\n",
-				cpu);
-			return ret;
-		}
-	}
-	return 0;
+	return cpuidle_register(&tegra_idle_driver, NULL);
 }