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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
108 lines
2.4 KiB
C
108 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Rockchip RK805 PMIC Power Key driver
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*
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* Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
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*
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* Author: Joseph Chen <chenjh@rock-chips.com>
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*/
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/input.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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static irqreturn_t pwrkey_fall_irq(int irq, void *_pwr)
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{
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struct input_dev *pwr = _pwr;
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input_report_key(pwr, KEY_POWER, 1);
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input_sync(pwr);
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return IRQ_HANDLED;
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}
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static irqreturn_t pwrkey_rise_irq(int irq, void *_pwr)
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{
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struct input_dev *pwr = _pwr;
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input_report_key(pwr, KEY_POWER, 0);
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input_sync(pwr);
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return IRQ_HANDLED;
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}
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static int rk805_pwrkey_probe(struct platform_device *pdev)
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{
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struct input_dev *pwr;
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int fall_irq, rise_irq;
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int err;
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pwr = devm_input_allocate_device(&pdev->dev);
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if (!pwr) {
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dev_err(&pdev->dev, "Can't allocate power button\n");
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return -ENOMEM;
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}
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pwr->name = "rk805 pwrkey";
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pwr->phys = "rk805_pwrkey/input0";
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pwr->id.bustype = BUS_HOST;
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input_set_capability(pwr, EV_KEY, KEY_POWER);
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fall_irq = platform_get_irq(pdev, 0);
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if (fall_irq < 0) {
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dev_err(&pdev->dev, "Can't get fall irq: %d\n", fall_irq);
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return fall_irq;
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}
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rise_irq = platform_get_irq(pdev, 1);
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if (rise_irq < 0) {
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dev_err(&pdev->dev, "Can't get rise irq: %d\n", rise_irq);
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return rise_irq;
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}
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err = devm_request_any_context_irq(&pwr->dev, fall_irq,
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pwrkey_fall_irq,
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IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
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"rk805_pwrkey_fall", pwr);
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if (err < 0) {
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dev_err(&pdev->dev, "Can't register fall irq: %d\n", err);
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return err;
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}
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err = devm_request_any_context_irq(&pwr->dev, rise_irq,
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pwrkey_rise_irq,
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IRQF_TRIGGER_RISING | IRQF_ONESHOT,
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"rk805_pwrkey_rise", pwr);
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if (err < 0) {
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dev_err(&pdev->dev, "Can't register rise irq: %d\n", err);
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return err;
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}
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err = input_register_device(pwr);
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if (err) {
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dev_err(&pdev->dev, "Can't register power button: %d\n", err);
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return err;
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}
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platform_set_drvdata(pdev, pwr);
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device_init_wakeup(&pdev->dev, true);
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return 0;
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}
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static struct platform_driver rk805_pwrkey_driver = {
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.probe = rk805_pwrkey_probe,
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.driver = {
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.name = "rk805-pwrkey",
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},
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};
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module_platform_driver(rk805_pwrkey_driver);
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MODULE_AUTHOR("Joseph Chen <chenjh@rock-chips.com>");
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MODULE_DESCRIPTION("RK805 PMIC Power Key driver");
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MODULE_LICENSE("GPL");
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