Release 4.11 drivers/cpuidle/cpuidle-at91.c
/*
* based on arch/arm/mach-kirkwood/cpuidle.c
*
* CPU idle support for AT91 SoC
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*
* The cpu idle uses wait-for-interrupt and RAM self refresh in order
* to implement two idle states -
* #1 wait-for-interrupt
* #2 wait-for-interrupt and RAM self refresh
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/cpuidle.h>
#include <linux/io.h>
#include <linux/export.h>
#include <asm/cpuidle.h>
#define AT91_MAX_STATES 2
static void (*at91_standby)(void);
/* Actual code that puts the SoC in different idle states */
static int at91_enter_idle(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
{
at91_standby();
return index;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Albin Tonnerre | 17 | 68.00% | 1 | 25.00% |
| Deepthi Dharwar | 7 | 28.00% | 2 | 50.00% |
| Daniel Lezcano | 1 | 4.00% | 1 | 25.00% |
| Total | 25 | 100.00% | 4 | 100.00% |
static struct cpuidle_driver at91_idle_driver = {
.name = "at91_idle",
.owner = THIS_MODULE,
.states[0] = ARM_CPUIDLE_WFI_STATE,
.states[1] = {
.enter = at91_enter_idle,
.exit_latency = 10,
.target_residency = 10000,
.name = "RAM_SR",
.desc = "WFI and DDR Self Refresh",
},
.state_count = AT91_MAX_STATES,
};
/* Initialize CPU idle by registering the idle states */
static int at91_cpuidle_probe(struct platform_device *dev)
{
at91_standby = (void *)(dev->dev.platform_data);
return cpuidle_register(&at91_idle_driver, NULL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Daniel Lezcano | 23 | 67.65% | 2 | 40.00% |
| Robert Lee | 5 | 14.71% | 1 | 20.00% |
| Deepthi Dharwar | 4 | 11.76% | 1 | 20.00% |
| Albin Tonnerre | 2 | 5.88% | 1 | 20.00% |
| Total | 34 | 100.00% | 5 | 100.00% |
static struct platform_driver at91_cpuidle_driver = {
.driver = {
.name = "cpuidle-at91",
},
.probe = at91_cpuidle_probe,
};
builtin_platform_driver(at91_cpuidle_driver);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Albin Tonnerre | 77 | 41.18% | 1 | 12.50% |
| Daniel Lezcano | 58 | 31.02% | 3 | 37.50% |
| Robert Lee | 37 | 19.79% | 1 | 12.50% |
| Deepthi Dharwar | 14 | 7.49% | 2 | 25.00% |
| Paul Gortmaker | 1 | 0.53% | 1 | 12.50% |
| Total | 187 | 100.00% | 8 | 100.00% |
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