Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Rockchip RK805 PMIC Power Key driver
 *
 * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
 *
 * Author: Joseph Chen <chenjh@rock-chips.com>
 */
 
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
 
static irqreturn_t pwrkey_fall_irq(int irq, void *_pwr)
{
<------>struct input_dev *pwr = _pwr;
 
<------>input_report_key(pwr, KEY_POWER, 1);
<------>input_sync(pwr);
 
<------>return IRQ_HANDLED;
}
 
static irqreturn_t pwrkey_rise_irq(int irq, void *_pwr)
{
<------>struct input_dev *pwr = _pwr;
 
<------>input_report_key(pwr, KEY_POWER, 0);
<------>input_sync(pwr);
 
<------>return IRQ_HANDLED;
}
 
static int rk805_pwrkey_probe(struct platform_device *pdev)
{
<------>struct input_dev *pwr;
<------>int fall_irq, rise_irq;
<------>struct device_node *np;
<------>int err;
 
<------>np = of_get_child_by_name(pdev->dev.parent->of_node, "pwrkey");
<------>if (np && !of_device_is_available(np)) {
<------><------>dev_info(&pdev->dev, "device is disabled\n");
<------><------>return -EINVAL;
<------>}
 
<------>pwr = devm_input_allocate_device(&pdev->dev);
<------>if (!pwr) {
<------><------>dev_err(&pdev->dev, "Can't allocate power button\n");
<------><------>return -ENOMEM;
<------>}
 
<------>pwr->name = "rk805 pwrkey";
<------>pwr->phys = "rk805_pwrkey/input0";
<------>pwr->id.bustype = BUS_HOST;
<------>input_set_capability(pwr, EV_KEY, KEY_POWER);
 
<------>fall_irq = platform_get_irq(pdev, 0);
<------>if (fall_irq < 0)
<------><------>return fall_irq;
 
<------>rise_irq = platform_get_irq(pdev, 1);
<------>if (rise_irq < 0)
<------><------>return rise_irq;
 
<------>err = devm_request_any_context_irq(&pwr->dev, fall_irq,
<------><------><------><------><------>   pwrkey_fall_irq,
<------><------><------><------><------>   IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
<------><------><------><------><------>   "rk805_pwrkey_fall", pwr);
<------>if (err < 0) {
<------><------>dev_err(&pdev->dev, "Can't register fall irq: %d\n", err);
<------><------>return err;
<------>}
 
<------>err = devm_request_any_context_irq(&pwr->dev, rise_irq,
<------><------><------><------><------>   pwrkey_rise_irq,
<------><------><------><------><------>   IRQF_TRIGGER_RISING | IRQF_ONESHOT,
<------><------><------><------><------>   "rk805_pwrkey_rise", pwr);
<------>if (err < 0) {
<------><------>dev_err(&pdev->dev, "Can't register rise irq: %d\n", err);
<------><------>return err;
<------>}
 
<------>err = input_register_device(pwr);
<------>if (err) {
<------><------>dev_err(&pdev->dev, "Can't register power button: %d\n", err);
<------><------>return err;
<------>}
 
<------>platform_set_drvdata(pdev, pwr);
<------>device_init_wakeup(&pdev->dev, true);
 
<------>return 0;
}
 
static struct platform_driver rk805_pwrkey_driver = {
<------>.probe	= rk805_pwrkey_probe,
<------>.driver	= {
<------><------>.name = "rk805-pwrkey",
<------>},
};
module_platform_driver(rk805_pwrkey_driver);
 
MODULE_AUTHOR("Joseph Chen <chenjh@rock-chips.com>");
MODULE_DESCRIPTION("RK805 PMIC Power Key driver");
MODULE_LICENSE("GPL");