68d641efd8
Since platform_device_add_data copies the passed data, the allocated subdev_pdata is never freed. A simple fix would be to either free subdev_pdata or put it onto the stack. But since the pcf50633 child devices can rely on beeing children of the pcf50633 core device it's much more elegant to get access to pcf50633 core structure through that link. This allows to get completly rid of pcf5033_subdev_pdata. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Paul Fertser <fercerpav@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
131 lines
3.2 KiB
C
131 lines
3.2 KiB
C
/* NXP PCF50633 Input Driver
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*
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* (C) 2006-2008 by Openmoko, Inc.
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* Author: Balaji Rao <balajirrao@openmoko.org>
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* All rights reserved.
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*
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* Broken down from monstrous PCF50633 driver mainly by
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* Harald Welte, Andy Green and Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/platform_device.h>
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#include <linux/input.h>
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#include <linux/mfd/pcf50633/core.h>
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#define PCF50633_OOCSTAT_ONKEY 0x01
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#define PCF50633_REG_OOCSTAT 0x12
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#define PCF50633_REG_OOCMODE 0x10
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struct pcf50633_input {
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struct pcf50633 *pcf;
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struct input_dev *input_dev;
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};
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static void
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pcf50633_input_irq(int irq, void *data)
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{
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struct pcf50633_input *input;
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int onkey_released;
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input = data;
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/* We report only one event depending on the key press status */
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onkey_released = pcf50633_reg_read(input->pcf, PCF50633_REG_OOCSTAT)
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& PCF50633_OOCSTAT_ONKEY;
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if (irq == PCF50633_IRQ_ONKEYF && !onkey_released)
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input_report_key(input->input_dev, KEY_POWER, 1);
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else if (irq == PCF50633_IRQ_ONKEYR && onkey_released)
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input_report_key(input->input_dev, KEY_POWER, 0);
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input_sync(input->input_dev);
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}
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static int __devinit pcf50633_input_probe(struct platform_device *pdev)
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{
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struct pcf50633_input *input;
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struct input_dev *input_dev;
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int ret;
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input = kzalloc(sizeof(*input), GFP_KERNEL);
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if (!input)
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return -ENOMEM;
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input_dev = input_allocate_device();
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if (!input_dev) {
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kfree(input);
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return -ENOMEM;
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}
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platform_set_drvdata(pdev, input);
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input->pcf = dev_to_pcf50633(pdev->dev.parent);
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input->input_dev = input_dev;
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input_dev->name = "PCF50633 PMU events";
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input_dev->id.bustype = BUS_I2C;
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input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_PWR);
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set_bit(KEY_POWER, input_dev->keybit);
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ret = input_register_device(input_dev);
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if (ret) {
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input_free_device(input_dev);
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kfree(input);
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return ret;
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}
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pcf50633_register_irq(input->pcf, PCF50633_IRQ_ONKEYR,
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pcf50633_input_irq, input);
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pcf50633_register_irq(input->pcf, PCF50633_IRQ_ONKEYF,
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pcf50633_input_irq, input);
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return 0;
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}
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static int __devexit pcf50633_input_remove(struct platform_device *pdev)
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{
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struct pcf50633_input *input = platform_get_drvdata(pdev);
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pcf50633_free_irq(input->pcf, PCF50633_IRQ_ONKEYR);
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pcf50633_free_irq(input->pcf, PCF50633_IRQ_ONKEYF);
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input_unregister_device(input->input_dev);
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kfree(input);
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return 0;
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}
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static struct platform_driver pcf50633_input_driver = {
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.driver = {
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.name = "pcf50633-input",
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},
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.probe = pcf50633_input_probe,
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.remove = __devexit_p(pcf50633_input_remove),
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};
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static int __init pcf50633_input_init(void)
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{
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return platform_driver_register(&pcf50633_input_driver);
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}
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module_init(pcf50633_input_init);
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static void __exit pcf50633_input_exit(void)
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{
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platform_driver_unregister(&pcf50633_input_driver);
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}
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module_exit(pcf50633_input_exit);
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MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
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MODULE_DESCRIPTION("PCF50633 input driver");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:pcf50633-input");
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