Contributors: 10
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Magnus Damm |
192 |
57.31% |
2 |
14.29% |
| Daniel Lezcano |
113 |
33.73% |
3 |
21.43% |
| Deepthi Dharwar |
11 |
3.28% |
2 |
14.29% |
| Rafael J. Wysocki |
8 |
2.39% |
1 |
7.14% |
| Paul Gortmaker |
3 |
0.90% |
1 |
7.14% |
| Kuninori Morimoto |
2 |
0.60% |
1 |
7.14% |
| Geert Uytterhoeven |
2 |
0.60% |
1 |
7.14% |
| Robert Lee |
2 |
0.60% |
1 |
7.14% |
| Paul Mundt |
1 |
0.30% |
1 |
7.14% |
| Linus Torvalds |
1 |
0.30% |
1 |
7.14% |
| Total |
335 |
|
14 |
|
// SPDX-License-Identifier: GPL-2.0
/*
* arch/sh/kernel/cpu/shmobile/cpuidle.c
*
* Cpuidle support code for SuperH Mobile
*
* Copyright (C) 2009 Magnus Damm
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/suspend.h>
#include <linux/cpuidle.h>
#include <linux/export.h>
#include <asm/suspend.h>
#include <linux/uaccess.h>
static unsigned long cpuidle_mode[] = {
SUSP_SH_SLEEP, /* regular sleep mode */
SUSP_SH_SLEEP | SUSP_SH_SF, /* sleep mode + self refresh */
SUSP_SH_STANDBY | SUSP_SH_SF, /* software standby mode + self refresh */
};
static int cpuidle_sleep_enter(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
{
unsigned long allowed_mode = SUSP_SH_SLEEP;
int requested_state = index;
int allowed_state;
int k;
/* convert allowed mode to allowed state */
for (k = ARRAY_SIZE(cpuidle_mode) - 1; k > 0; k--)
if (cpuidle_mode[k] == allowed_mode)
break;
allowed_state = k;
/* take the following into account for sleep mode selection:
* - allowed_state: best mode allowed by hardware (clock deps)
* - requested_state: best mode allowed by software (latencies)
*/
k = min_t(int, allowed_state, requested_state);
sh_mobile_call_standby(cpuidle_mode[k]);
return k;
}
static struct cpuidle_driver cpuidle_driver = {
.name = "sh_idle",
.owner = THIS_MODULE,
.states = {
{
.exit_latency = 1,
.target_residency = 1 * 2,
.power_usage = 3,
.enter = cpuidle_sleep_enter,
.name = "C1",
.desc = "SuperH Sleep Mode",
},
{
.exit_latency = 100,
.target_residency = 1 * 2,
.power_usage = 1,
.enter = cpuidle_sleep_enter,
.name = "C2",
.desc = "SuperH Sleep Mode [SF]",
.flags = CPUIDLE_FLAG_UNUSABLE,
},
{
.exit_latency = 2300,
.target_residency = 1 * 2,
.power_usage = 1,
.enter = cpuidle_sleep_enter,
.name = "C3",
.desc = "SuperH Mobile Standby Mode [SF]",
.flags = CPUIDLE_FLAG_UNUSABLE,
},
},
.safe_state_index = 0,
.state_count = 3,
};
int __init sh_mobile_setup_cpuidle(void)
{
if (sh_mobile_sleep_supported & SUSP_SH_SF)
cpuidle_driver.states[1].flags = CPUIDLE_FLAG_NONE;
if (sh_mobile_sleep_supported & SUSP_SH_STANDBY)
cpuidle_driver.states[2].flags = CPUIDLE_FLAG_NONE;
return cpuidle_register(&cpuidle_driver, NULL);
}