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/* Philips PCF50633 Input Driver
*
* (C) 2006-2008 by Openmoko, Inc.
* Author: Balaji Rao <balajirrao@openmoko.org>
* All rights reserved.
*
* Broken down from monstrous PCF50633 driver mainly by
* Harald Welte, Andy Green and Werner Almesberger
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* 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/input.h>
#include <linux/mfd/pcf50633/core.h>
#include <linux/mfd/pcf50633/input.h>
static void
pcf50633_input_irq(struct pcf50633 *pcf, int irq, void *data)
{
struct input_dev *input_dev = pcf->input.input_dev;
int onkey_released;
/* We report only one event depending on if the key status */
onkey_released = pcf50633_reg_read(pcf, PCF50633_REG_OOCSTAT) &
PCF50633_OOCSTAT_ONKEY;
if (irq == PCF50633_IRQ_ONKEYF && !onkey_released)
input_report_key(input_dev, KEY_POWER, 1);
else if (irq == PCF50633_IRQ_ONKEYR && onkey_released)
input_report_key(input_dev, KEY_POWER, 0);
input_sync(input_dev);
}
int __init pcf50633_input_probe(struct platform_device *pdev)
{
struct pcf50633 *pcf;
struct input_dev *input_dev;
int ret;
pcf = platform_get_drvdata(pdev);
input_dev = input_allocate_device();
if (!input_dev)
return -ENODEV;
input_dev->name = "GTA02 PMU events";
input_dev->id.bustype = BUS_I2C;
input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_PWR);
set_bit(KEY_POWER, input_dev->keybit);
set_bit(KEY_POWER2, input_dev->keybit);
ret = input_register_device(input_dev);
if (ret)
goto out;
pcf->input.input_dev = input_dev;
/* Currently we care only about ONKEY and USBINS/USBREM
*
* USBINS/USBREM are told to us by mbc driver as we can't setup
* two handlers for an IRQ
*/
pcf->irq_handler[PCF50633_IRQ_ONKEYR].handler = pcf50633_input_irq;
pcf->irq_handler[PCF50633_IRQ_ONKEYF].handler = pcf50633_input_irq;
return 0;
out:
input_free_device(input_dev);
return ret;
}
static int __devexit pcf50633_input_remove(struct platform_device *pdev)
{
struct pcf50633 *pcf;
pcf = platform_get_drvdata(pdev);
input_unregister_device(pcf->input.input_dev);
return 0;
}
struct platform_driver pcf50633_input_driver = {
.driver = {
.name = "pcf50633-input",
},
.probe = pcf50633_input_probe,
.remove = __devexit_p(pcf50633_input_remove),
};
static int __init pcf50633_input_init(void)
{
return platform_driver_register(&pcf50633_input_driver);
}
module_init(pcf50633_input_init);
static void __exit pcf50633_input_exit(void)
{
platform_driver_unregister(&pcf50633_input_driver);
}
module_exit(pcf50633_input_exit);
MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
MODULE_DESCRIPTION("PCF50633 input driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:pcf50633-input");
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