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);