Release 4.14 drivers/power/reset/vexpress-poweroff.c
/*
* 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.
*
* This program is distributed in the hope that 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.
*
* Copyright (C) 2012 ARM Limited
*/
#include <linux/delay.h>
#include <linux/notifier.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/reboot.h>
#include <linux/stat.h>
#include <linux/vexpress.h>
static void vexpress_reset_do(struct device *dev, const char *what)
{
int err = -ENOENT;
struct regmap *reg = dev_get_drvdata(dev);
if (reg) {
err = regmap_write(reg, 0, 0);
if (!err)
mdelay(1000);
}
dev_emerg(dev, "Unable to %s (%d)\n", what, err);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pawel Moll | 70 | 100.00% | 3 | 100.00% |
| Total | 70 | 100.00% | 3 | 100.00% |
static struct device *vexpress_power_off_device;
static void vexpress_power_off(void)
{
vexpress_reset_do(vexpress_power_off_device, "power off");
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pawel Moll | 14 | 93.33% | 1 | 50.00% |
| Catalin Marinas | 1 | 6.67% | 1 | 50.00% |
| Total | 15 | 100.00% | 2 | 100.00% |
static struct device *vexpress_restart_device;
static int vexpress_restart(struct notifier_block *this, unsigned long mode,
void *cmd)
{
vexpress_reset_do(vexpress_restart_device, "restart");
return NOTIFY_DONE;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pawel Moll | 15 | 51.72% | 1 | 33.33% |
| Guenter Roeck | 13 | 44.83% | 1 | 33.33% |
| Catalin Marinas | 1 | 3.45% | 1 | 33.33% |
| Total | 29 | 100.00% | 3 | 100.00% |
static struct notifier_block vexpress_restart_nb = {
.notifier_call = vexpress_restart,
.priority = 128,
};
static ssize_t vexpress_reset_active_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%d\n", vexpress_restart_device == dev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pawel Moll | 32 | 100.00% | 1 | 100.00% |
| Total | 32 | 100.00% | 1 | 100.00% |
static ssize_t vexpress_reset_active_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
long value;
int err = kstrtol(buf, 0, &value);
if (!err && value)
vexpress_restart_device = dev;
return err ? err : count;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pawel Moll | 58 | 100.00% | 1 | 100.00% |
| Total | 58 | 100.00% | 1 | 100.00% |
static DEVICE_ATTR(active, S_IRUGO | S_IWUSR, vexpress_reset_active_show,
vexpress_reset_active_store);
enum vexpress_reset_func { FUNC_RESET, FUNC_SHUTDOWN, FUNC_REBOOT };
static const struct of_device_id vexpress_reset_of_match[] = {
{
.compatible = "arm,vexpress-reset",
.data = (void *)FUNC_RESET,
}, {
.compatible = "arm,vexpress-shutdown",
.data = (void *)FUNC_SHUTDOWN
}, {
.compatible = "arm,vexpress-reboot",
.data = (void *)FUNC_REBOOT
},
{}
};
static int _vexpress_register_restart_handler(struct device *dev)
{
int err;
vexpress_restart_device = dev;
err = register_restart_handler(&vexpress_restart_nb);
if (err) {
dev_err(dev, "cannot register restart handler (err=%d)\n", err);
return err;
}
device_create_file(dev, &dev_attr_active);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Guenter Roeck | 55 | 100.00% | 1 | 100.00% |
| Total | 55 | 100.00% | 1 | 100.00% |
static int vexpress_reset_probe(struct platform_device *pdev)
{
const struct of_device_id *match =
of_match_device(vexpress_reset_of_match, &pdev->dev);
struct regmap *regmap;
int ret = 0;
if (!match)
return -EINVAL;
regmap = devm_regmap_init_vexpress_config(&pdev->dev);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
dev_set_drvdata(&pdev->dev, regmap);
switch ((enum vexpress_reset_func)match->data) {
case FUNC_SHUTDOWN:
vexpress_power_off_device = &pdev->dev;
pm_power_off = vexpress_power_off;
break;
case FUNC_RESET:
if (!vexpress_restart_device)
ret = _vexpress_register_restart_handler(&pdev->dev);
break;
case FUNC_REBOOT:
ret = _vexpress_register_restart_handler(&pdev->dev);
break;
};
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pawel Moll | 128 | 89.51% | 4 | 66.67% |
| Guenter Roeck | 10 | 6.99% | 1 | 16.67% |
| Catalin Marinas | 5 | 3.50% | 1 | 16.67% |
| Total | 143 | 100.00% | 6 | 100.00% |
static struct platform_driver vexpress_reset_driver = {
.probe = vexpress_reset_probe,
.driver = {
.name = "vexpress-reset",
.of_match_table = vexpress_reset_of_match,
},
};
static int __init vexpress_reset_init(void)
{
return platform_driver_register(&vexpress_reset_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pawel Moll | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
device_initcall(vexpress_reset_init);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pawel Moll | 475 | 80.92% | 4 | 50.00% |
| Guenter Roeck | 101 | 17.21% | 1 | 12.50% |
| Catalin Marinas | 9 | 1.53% | 1 | 12.50% |
| Fabian Frederick | 1 | 0.17% | 1 | 12.50% |
| Ben Dooks | 1 | 0.17% | 1 | 12.50% |
| Total | 587 | 100.00% | 8 | 100.00% |
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