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Merge branch 'for-next' of git://git.o-hand.com/linux-mfd
* 'for-next' of git://git.o-hand.com/linux-mfd: mfd: Fix twl4030-core build mfd: Ensure sm501 GPIO pin mode is GPIO when configured mfd: dm355 evm MMC/SD card detection regulator: PCF50633 pmic driver input: PCF50633 input driver power_supply: PCF50633 battery charger driver rtc: PCF50633 rtc driver mfd: PCF50633 gpio support mfd: PCF50633 adc driver mfd: PCF50633 core driver
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/* NXP PCF50633 Input Driver | ||
* | ||
* (C) 2006-2008 by Openmoko, Inc. | ||
* Author: Balaji Rao <[email protected]> | ||
* 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. | ||
* | ||
*/ | ||
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#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> | ||
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#include <linux/mfd/pcf50633/core.h> | ||
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#define PCF50633_OOCSTAT_ONKEY 0x01 | ||
#define PCF50633_REG_OOCSTAT 0x12 | ||
#define PCF50633_REG_OOCMODE 0x10 | ||
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struct pcf50633_input { | ||
struct pcf50633 *pcf; | ||
struct input_dev *input_dev; | ||
}; | ||
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static void | ||
pcf50633_input_irq(int irq, void *data) | ||
{ | ||
struct pcf50633_input *input; | ||
int onkey_released; | ||
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input = data; | ||
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/* We report only one event depending on the key press status */ | ||
onkey_released = pcf50633_reg_read(input->pcf, PCF50633_REG_OOCSTAT) | ||
& PCF50633_OOCSTAT_ONKEY; | ||
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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); | ||
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input_sync(input->input_dev); | ||
} | ||
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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; | ||
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input = kzalloc(sizeof(*input), GFP_KERNEL); | ||
if (!input) | ||
return -ENOMEM; | ||
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input_dev = input_allocate_device(); | ||
if (!input_dev) { | ||
kfree(input); | ||
return -ENOMEM; | ||
} | ||
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platform_set_drvdata(pdev, input); | ||
input->pcf = pdata->pcf; | ||
input->input_dev = input_dev; | ||
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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); | ||
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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); | ||
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return 0; | ||
} | ||
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static int __devexit pcf50633_input_remove(struct platform_device *pdev) | ||
{ | ||
struct pcf50633_input *input = platform_get_drvdata(pdev); | ||
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pcf50633_free_irq(input->pcf, PCF50633_IRQ_ONKEYR); | ||
pcf50633_free_irq(input->pcf, PCF50633_IRQ_ONKEYF); | ||
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input_unregister_device(input->input_dev); | ||
kfree(input); | ||
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return 0; | ||
} | ||
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static struct platform_driver pcf50633_input_driver = { | ||
.driver = { | ||
.name = "pcf50633-input", | ||
}, | ||
.probe = pcf50633_input_probe, | ||
.remove = __devexit_p(pcf50633_input_remove), | ||
}; | ||
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static int __init pcf50633_input_init(void) | ||
{ | ||
return platform_driver_register(&pcf50633_input_driver); | ||
} | ||
module_init(pcf50633_input_init); | ||
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static void __exit pcf50633_input_exit(void) | ||
{ | ||
platform_driver_unregister(&pcf50633_input_driver); | ||
} | ||
module_exit(pcf50633_input_exit); | ||
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MODULE_AUTHOR("Balaji Rao <[email protected]>"); | ||
MODULE_DESCRIPTION("PCF50633 input driver"); | ||
MODULE_LICENSE("GPL"); | ||
MODULE_ALIAS("platform:pcf50633-input"); |
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