Contributors: 8
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| David S. Miller |
126 |
49.80% |
10 |
45.45% |
| Linus Torvalds |
95 |
37.55% |
1 |
4.55% |
| Grant C. Likely |
15 |
5.93% |
5 |
22.73% |
| Stephen Rothwell |
12 |
4.74% |
2 |
9.09% |
| Geliang Tang |
2 |
0.79% |
1 |
4.55% |
| Paul Gortmaker |
1 |
0.40% |
1 |
4.55% |
| Greg Kroah-Hartman |
1 |
0.40% |
1 |
4.55% |
| Rob Herring |
1 |
0.40% |
1 |
4.55% |
| Total |
253 |
|
22 |
|
// SPDX-License-Identifier: GPL-2.0
/* power.c: Power management driver.
*
* Copyright (C) 1999, 2007, 2008 David S. Miller (davem@davemloft.net)
*/
#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/reboot.h>
#include <linux/of_device.h>
#include <asm/prom.h>
#include <asm/io.h>
static void __iomem *power_reg;
static irqreturn_t power_handler(int irq, void *dev_id)
{
orderly_poweroff(true);
/* FIXME: Check registers for status... */
return IRQ_HANDLED;
}
static int has_button_interrupt(unsigned int irq, struct device_node *dp)
{
if (irq == 0xffffffff)
return 0;
if (!of_find_property(dp, "button", NULL))
return 0;
return 1;
}
static int power_probe(struct platform_device *op)
{
struct resource *res = &op->resource[0];
unsigned int irq = op->archdata.irqs[0];
power_reg = of_ioremap(res, 0, 0x4, "power");
printk(KERN_INFO "%pOFn: Control reg at %llx\n",
op->dev.of_node, res->start);
if (has_button_interrupt(irq, op->dev.of_node)) {
if (request_irq(irq,
power_handler, 0, "power", NULL) < 0)
printk(KERN_ERR "power: Cannot setup IRQ handler.\n");
}
return 0;
}
static const struct of_device_id power_match[] = {
{
.name = "power",
},
{},
};
static struct platform_driver power_driver = {
.probe = power_probe,
.driver = {
.name = "power",
.of_match_table = power_match,
},
};
builtin_platform_driver(power_driver);