diff options
Diffstat (limited to 'arch/arm/mach-tegra/cpuidle.c')
-rw-r--r-- | arch/arm/mach-tegra/cpuidle.c | 83 |
1 files changed, 13 insertions, 70 deletions
diff --git a/arch/arm/mach-tegra/cpuidle.c b/arch/arm/mach-tegra/cpuidle.c index 9a6f051b382..d0651397aec 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); |