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Commit 1851b06a authored by Balaji Rao's avatar Balaji Rao Committed by Samuel Ortiz
Browse files

input: PCF50633 input driver 



Signed-off-by: default avatarBalaji Rao <balajirrao@openmoko.org>
Cc: Andy Green <andy@openmoko.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@openedhand.com>
parent f5714dc9

drivers/input/misc/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -220,4 +220,11 @@ config HP_SDC_RTC 
	  Say Y here if you want to support the built-in real time clock

	  of the HP SDC controller.



config INPUT_PCF50633_PMU

	tristate "PCF50633 PMU events"

	depends on MFD_PCF50633

	help

	 Say Y to include support for delivering  PMU events via  input

	 layer on NXP PCF50633.



endif

drivers/input/misc/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -21,3 +21,4 @@ obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o 
obj-$(CONFIG_INPUT_UINPUT)		+= uinput.o

obj-$(CONFIG_INPUT_APANEL)		+= apanel.o

obj-$(CONFIG_INPUT_SGI_BTNS)		+= sgi_btns.o

obj-$(CONFIG_INPUT_PCF50633_PMU)	+= pcf50633-input.o

drivers/input/misc/pcf50633-input.c

0 → 100644
+132 −0
Original line number Diff line number Diff line 
/* NXP 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.

 *

 */



#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/init.h>

#include <linux/device.h>

#include <linux/platform_device.h>

#include <linux/input.h>



#include <linux/mfd/pcf50633/core.h>



#define PCF50633_OOCSTAT_ONKEY	0x01

#define PCF50633_REG_OOCSTAT	0x12

#define PCF50633_REG_OOCMODE	0x10



struct pcf50633_input {

	struct pcf50633 *pcf;

	struct input_dev *input_dev;

};



static void

pcf50633_input_irq(int irq, void *data)

{

	struct pcf50633_input *input;

	int onkey_released;



	input = data;



	/* We report only one event depending on the key press status */

	onkey_released = pcf50633_reg_read(input->pcf, PCF50633_REG_OOCSTAT)

						& PCF50633_OOCSTAT_ONKEY;



	if (irq == PCF50633_IRQ_ONKEYF && !onkey_released)

		input_report_key(input->input_dev, KEY_POWER, 1);

	else if (irq == PCF50633_IRQ_ONKEYR && onkey_released)

		input_report_key(input->input_dev, KEY_POWER, 0);



	input_sync(input->input_dev);

}



static int __devinit pcf50633_input_probe(struct platform_device *pdev)

{

	struct pcf50633_input *input;

	struct pcf50633_subdev_pdata *pdata = pdev->dev.platform_data;

	struct input_dev *input_dev;

	int ret;





	input = kzalloc(sizeof(*input), GFP_KERNEL);

	if (!input)

		return -ENOMEM;



	input_dev = input_allocate_device();

	if (!input_dev) {

		kfree(input);

		return -ENOMEM;

	}



	platform_set_drvdata(pdev, input);

	input->pcf = pdata->pcf;

	input->input_dev = input_dev;



	input_dev->name = "PCF50633 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);



	ret = input_register_device(input_dev);

	if (ret) {

		input_free_device(input_dev);

		kfree(input);

		return ret;

	}

	pcf50633_register_irq(pdata->pcf, PCF50633_IRQ_ONKEYR,

				pcf50633_input_irq, input);

	pcf50633_register_irq(pdata->pcf, PCF50633_IRQ_ONKEYF,

				pcf50633_input_irq, input);



	return 0;

}



static int __devexit pcf50633_input_remove(struct platform_device *pdev)

{

	struct pcf50633_input *input  = platform_get_drvdata(pdev);



	pcf50633_free_irq(input->pcf, PCF50633_IRQ_ONKEYR);

	pcf50633_free_irq(input->pcf, PCF50633_IRQ_ONKEYF);



	input_unregister_device(input->input_dev);

	kfree(input);



	return 0;

}



static 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");