summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-tegra/cpuidle.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-tegra/cpuidle.c')
-rw-r--r--arch/arm/mach-tegra/cpuidle.c83
1 files changed, 13 insertions, 70 deletions
diff --git a/arch/arm/mach-tegra/cpuidle.c b/arch/arm/mach-tegra/cpuidle.c
index 9a6f051..d065139 100644
--- a/arch/arm/mach-tegra/cpuidle.c
+++ b/arch/arm/mach-tegra/cpuidle.c
@@ -23,83 +23,26 @@
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/cpu.h>
-#include <linux/cpuidle.h>
-#include <linux/hrtimer.h>
-#include <asm/proc-fns.h>
-
-static int tegra_idle_enter_lp3(struct cpuidle_device *dev,
- struct cpuidle_driver *drv, int index);
-
-struct cpuidle_driver tegra_idle_driver = {
- .name = "tegra_idle",
- .owner = THIS_MODULE,
- .state_count = 1,
- .states = {
- [0] = {
- .enter = tegra_idle_enter_lp3,
- .exit_latency = 10,
- .target_residency = 10,
- .power_usage = 600,
- .flags = CPUIDLE_FLAG_TIME_VALID,
- .name = "LP3",
- .desc = "CPU flow-controlled",
- },
- },
-};
-
-static DEFINE_PER_CPU(struct cpuidle_device, tegra_idle_device);
-
-static int tegra_idle_enter_lp3(struct cpuidle_device *dev,
- struct cpuidle_driver *drv, int index)
-{
- ktime_t enter, exit;
- s64 us;
-
- local_irq_disable();
- local_fiq_disable();
-
- enter = ktime_get();
-
- cpu_do_idle();
-
- exit = ktime_sub(ktime_get(), enter);
- us = ktime_to_us(exit);
-
- local_fiq_enable();
- local_irq_enable();
-
- dev->last_residency = us;
-
- return index;
-}
+#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);
OpenPOWER on IntegriCloud