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authorJoseph Lo <josephl@nvidia.com>2012-10-31 13:41:15 +0400
committerStephen Warren <swarren@nvidia.com>2012-11-16 02:09:20 +0400
commit0b25e25bef0e03c0465c3eb1119b32cb906db689 (patch)
tree1a36d929038a7f4e4c0fccc3b4ad8e126d787be3 /arch/arm/mach-tegra/cpuidle.c
parent641b4ef8f1fea88803cc1ff3f34d93ba6bcd8106 (diff)
downloadlinux-0b25e25bef0e03c0465c3eb1119b32cb906db689.tar.xz
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>
Diffstat (limited to 'arch/arm/mach-tegra/cpuidle.c')
-rw-r--r--arch/arm/mach-tegra/cpuidle.c47
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);