linux/drivers/input/misc/max8925_onkey.c

/*
 * MAX8925 ONKEY driver
 *
 * Copyright (C) 2009 Marvell International Ltd.
 *      Haojian Zhuang <[email protected]>
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/mfd/max8925.h>
#include <linux/slab.h>
#include <linux/device.h>

#define SW_INPUT …
#define HARDRESET_EN …
#define PWREN_EN …

struct max8925_onkey_info { … };

/*
 * MAX8925 gives us an interrupt when ONKEY is pressed or released.
 * max8925_set_bits() operates I2C bus and may sleep. So implement
 * it in thread IRQ handler.
 */
static irqreturn_t max8925_onkey_handler(int irq, void *data)
{ … }

static int max8925_onkey_probe(struct platform_device *pdev)
{ … }

static int max8925_onkey_suspend(struct device *dev)
{ … }

static int max8925_onkey_resume(struct device *dev)
{ … }

static DEFINE_SIMPLE_DEV_PM_OPS(max8925_onkey_pm_ops,
				max8925_onkey_suspend, max8925_onkey_resume);

static struct platform_driver max8925_onkey_driver = …;
module_platform_driver(…) …;

MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;