ARM: tegra: cpuidle: separate cpuidle driver for different chips

The different Tegra chips may have different CPU idle states and data.
Individual CPU idle driver make it more easy to maintain.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

1 files changed, 13 insertions, 34 deletions

diff --git a/arch/arm/mach-tegra/cpuidle.c b/arch/arm/mach-tegra/cpuidle.c
index 4e0b07c7963c..d0651397aec7 100644
--- a/arch/arm/mach-tegra/cpuidle.c
+++ b/arch/arm/mach-tegra/cpuidle.c
@@ -23,47 +23,26 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/cpuidle.h>
 
-#include <asm/cpuidle.h>
-
-struct cpuidle_driver tegra_idle_driver = {
-	.name = "tegra_idle",
-	.owner = THIS_MODULE,
-	.en_core_tk_irqen = 1,
-	.state_count = 1,
-	.states = {
-		[0] = ARM_CPUIDLE_WFI_STATE_PWR(600),
-	},
-};
-
-static DEFINE_PER_CPU(struct cpuidle_device, tegra_idle_device);
+#include "fuse.h"
+#include "cpuidle.h"
 
 static int __init tegra_cpuidle_init(void)
 {
 	int ret;
-	unsigned int cpu;
-	struct cpuidle_device *dev;
-	struct cpuidle_driver *drv = &tegra_idle_driver;
 
-	ret = cpuidle_register_driver(&tegra_idle_driver);
-	if (ret) {
-		pr_err("CPUidle driver registration failed\n");
-		return ret;
+	switch (tegra_chip_id) {
+	case TEGRA20:
+		ret = tegra20_cpuidle_init();
+		break;
+	case TEGRA30:
+		ret = tegra30_cpuidle_init();
+		break;
+	default:
+		ret = -ENODEV;
+		break;
 	}
 
-	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 ret;
 }
 device_initcall(tegra_cpuidle_init);