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103 lines
2.3 KiB
103 lines
2.3 KiB
// 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 <[email protected]> |
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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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return fall_irq; |
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rise_irq = platform_get_irq(pdev, 1); |
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if (rise_irq < 0) |
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return rise_irq; |
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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 <[email protected]>"); |
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MODULE_DESCRIPTION("RK805 PMIC Power Key driver"); |
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MODULE_LICENSE("GPL");
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