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: 9931faca02c604c22335f5a935a501bb2ace6e20 authored by Linus Torvalds on 10 January 2013, 02:59:55 UTC
Linux 3.8-rc3
Linux 3.8-rc3
Tip revision: 9931fac
cpuidle.c
/* linux/arch/arm/mach-s3c64xx/cpuidle.c
*
* Copyright (c) 2011 Wolfson Microelectronics, plc
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/cpuidle.h>
#include <linux/io.h>
#include <linux/export.h>
#include <linux/time.h>
#include <asm/proc-fns.h>
#include <mach/map.h>
#include <mach/regs-sys.h>
#include <mach/regs-syscon-power.h>
static int s3c64xx_enter_idle(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
{
unsigned long tmp;
/* Setup PWRCFG to enter idle mode */
tmp = __raw_readl(S3C64XX_PWR_CFG);
tmp &= ~S3C64XX_PWRCFG_CFG_WFI_MASK;
tmp |= S3C64XX_PWRCFG_CFG_WFI_IDLE;
__raw_writel(tmp, S3C64XX_PWR_CFG);
cpu_do_idle();
return index;
}
static DEFINE_PER_CPU(struct cpuidle_device, s3c64xx_cpuidle_device);
static struct cpuidle_driver s3c64xx_cpuidle_driver = {
.name = "s3c64xx_cpuidle",
.owner = THIS_MODULE,
.en_core_tk_irqen = 1,
.states = {
{
.enter = s3c64xx_enter_idle,
.exit_latency = 1,
.target_residency = 1,
.flags = CPUIDLE_FLAG_TIME_VALID,
.name = "IDLE",
.desc = "System active, ARM gated",
},
},
.state_count = 1,
};
static int __init s3c64xx_init_cpuidle(void)
{
int ret;
cpuidle_register_driver(&s3c64xx_cpuidle_driver);
ret = cpuidle_register_device(&s3c64xx_cpuidle_device);
if (ret) {
pr_err("Failed to register cpuidle device: %d\n", ret);
return ret;
}
return 0;
}
device_initcall(s3c64xx_init_cpuidle);