mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
8010e0db70
Empty remove functions don't serve a useful purpose and can be removed. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
/*
|
|
* Retu power button driver.
|
|
*
|
|
* Copyright (C) 2004-2010 Nokia Corporation
|
|
*
|
|
* Original code written by Ari Saastamoinen, Juha Yrjölä and Felipe Balbi.
|
|
* Rewritten by Aaro Koskinen.
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General
|
|
* Public License. See the file "COPYING" in the main directory of this
|
|
* archive for more details.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/irq.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/input.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mfd/retu.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#define RETU_STATUS_PWRONX (1 << 5)
|
|
|
|
static irqreturn_t retu_pwrbutton_irq(int irq, void *_pwr)
|
|
{
|
|
struct input_dev *idev = _pwr;
|
|
struct retu_dev *rdev = input_get_drvdata(idev);
|
|
bool state;
|
|
|
|
state = !(retu_read(rdev, RETU_REG_STATUS) & RETU_STATUS_PWRONX);
|
|
input_report_key(idev, KEY_POWER, state);
|
|
input_sync(idev);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int retu_pwrbutton_probe(struct platform_device *pdev)
|
|
{
|
|
struct retu_dev *rdev = dev_get_drvdata(pdev->dev.parent);
|
|
struct input_dev *idev;
|
|
int irq;
|
|
int error;
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (irq < 0)
|
|
return irq;
|
|
|
|
idev = devm_input_allocate_device(&pdev->dev);
|
|
if (!idev)
|
|
return -ENOMEM;
|
|
|
|
idev->name = "retu-pwrbutton";
|
|
idev->dev.parent = &pdev->dev;
|
|
|
|
input_set_capability(idev, EV_KEY, KEY_POWER);
|
|
input_set_drvdata(idev, rdev);
|
|
|
|
error = devm_request_threaded_irq(&pdev->dev, irq,
|
|
NULL, retu_pwrbutton_irq,
|
|
IRQF_ONESHOT,
|
|
"retu-pwrbutton", idev);
|
|
if (error)
|
|
return error;
|
|
|
|
error = input_register_device(idev);
|
|
if (error)
|
|
return error;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver retu_pwrbutton_driver = {
|
|
.probe = retu_pwrbutton_probe,
|
|
.driver = {
|
|
.name = "retu-pwrbutton",
|
|
},
|
|
};
|
|
module_platform_driver(retu_pwrbutton_driver);
|
|
|
|
MODULE_ALIAS("platform:retu-pwrbutton");
|
|
MODULE_DESCRIPTION("Retu Power Button");
|
|
MODULE_AUTHOR("Ari Saastamoinen");
|
|
MODULE_AUTHOR("Felipe Balbi");
|
|
MODULE_AUTHOR("Aaro Koskinen <aaro.koskinen@iki.fi>");
|
|
MODULE_LICENSE("GPL");
|