https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: bc0195aad0daa2ad5b0d76cce22b167bc3435590 authored by Linus Torvalds on 12 July 2015, 22:10:30 UTC
Linux 4.2-rc2
Linux 4.2-rc2
Tip revision: bc0195a
cpuidle-tegra114.c
/*
* Copyright (c) 2013, NVIDIA Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <asm/firmware.h>
#include <linux/tick.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();
tick_broadcast_enter();
call_firmware_op(prepare_idle);
/* Do suspend by ourselves if the firmware does not implement it */
if (call_firmware_op(do_idle, 0) == -ENOSYS)
cpu_suspend(0, tegra30_sleep_cpu_secondary_finish);
tick_broadcast_exit();
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,
.name = "powered-down",
.desc = "CPU power gated",
},
#endif
},
};
int __init tegra114_cpuidle_init(void)
{
return cpuidle_register(&tegra_idle_driver, NULL);
}