Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0-or-later
/* 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
 */
 
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/slab.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 pcf50633_input_probe(struct platform_device *pdev)
{
<------>struct pcf50633_input *input;
<------>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 = dev_to_pcf50633(pdev->dev.parent);
<------>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(input->pcf, PCF50633_IRQ_ONKEYR,
<------><------><------><------>pcf50633_input_irq, input);
<------>pcf50633_register_irq(input->pcf, PCF50633_IRQ_ONKEYF,
<------><------><------><------>pcf50633_input_irq, input);
 
<------>return 0;
}
 
static int 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 = pcf50633_input_remove,
};
module_platform_driver(pcf50633_input_driver);
 
MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
MODULE_DESCRIPTION("PCF50633 input driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:pcf50633-input");