- 根目录:
- arch
- arm
- mach-tegra
- cpuidle-tegra114.c
#include <asm/firmware.h>
#include <linux/clockchips.h>
#include <linux/cpuidle.h>
#include <linux/cpu_pm.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <asm/cpuidle.h>
#include <asm/smp_plat.h>
#include <asm/suspend.h>
#include "pm.h"
#include "sleep.h"
#ifdef CONFIG_PM_SLEEP
#define TEGRA114_MAX_STATES 2
#else
#define TEGRA114_MAX_STATES 1
#endif
#ifdef CONFIG_PM_SLEEP
static int tegra114_idle_power_down(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
{
local_fiq_disable();
tegra_set_cpu_in_lp2();
cpu_pm_enter();
clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &dev->cpu);
call_firmware_op(prepare_idle);
if (call_firmware_op(do_idle) == -ENOSYS)
cpu_suspend(0, tegra30_sleep_cpu_secondary_finish);
clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &dev->cpu);
cpu_pm_exit();
tegra_clear_cpu_in_lp2();
local_fiq_enable();
return index;
}
#endif
static struct cpuidle_driver tegra_idle_driver = {
.name = "tegra_idle",
.owner = THIS_MODULE,
.state_count = TEGRA114_MAX_STATES,
.states = {
[0] = ARM_CPUIDLE_WFI_STATE_PWR(600),
#ifdef CONFIG_PM_SLEEP
[1] = {
.enter = tegra114_idle_power_down,
.exit_latency = 500,
.target_residency = 1000,
.power_usage = 0,
.flags = CPUIDLE_FLAG_TIME_VALID,
.name = "powered-down",
.desc = "CPU power gated",
},
#endif
},
};
int __init tegra114_cpuidle_init(void)
{
return cpuidle_register(&tegra_idle_driver, NULL);
}
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 41
- 42
- 43
- 44
- 45
- 46
- 47
- 48
- 49
- 50
- 51
- 52
- 53
- 54
- 55
- 56
- 57
- 58
- 59
- 60
- 61
- 62
- 63
- 64
- 65
- 66
- 67
- 68
- 69
- 70
- 71
- 72
- 73
- 74
- 75
- 76
- 77
- 78
- 79
- 80
- 81
- 82
- 83
- 84
- 85
- 86
- 87
- 88
- 89