mirror of
https://github.com/RT-Thread/rt-thread.git
synced 2026-02-06 17:12:01 +08:00
116 lines
2.5 KiB
C
116 lines
2.5 KiB
C
/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-3-08 GuEe-GUI the first version
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include <rtdevice.h>
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struct e3x0_button
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{
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struct rt_input_device parent;
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int press_irq, release_irq;
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};
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static void e3x0_button_press_isr(int irqno, void *param)
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{
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struct e3x0_button *btn = param;
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rt_input_report_key(&btn->parent, KEY_POWER, 1);
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rt_input_sync(&btn->parent);
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}
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static void e3x0_button_release_isr(int irqno, void *param)
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{
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struct e3x0_button *btn = param;
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rt_input_report_key(&btn->parent, KEY_POWER, 0);
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rt_input_sync(&btn->parent);
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}
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static rt_err_t e3x0_button_probe(struct rt_platform_device *pdev)
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{
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rt_err_t err;
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struct rt_device *dev = &pdev->parent;
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struct e3x0_button *btn = rt_calloc(1, sizeof(*btn));
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if (!btn)
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{
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return -RT_ENOMEM;
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}
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if ((btn->press_irq = rt_dm_dev_get_irq_by_name(dev, "press")) < 0)
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{
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err = btn->press_irq;
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goto _fail;
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}
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if ((btn->release_irq = rt_dm_dev_get_irq_by_name(dev, "release")) < 0)
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{
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err = btn->release_irq;
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goto _fail;
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}
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rt_input_set_capability(&btn->parent, EV_KEY, KEY_POWER);
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if ((err = rt_input_device_register(&btn->parent)))
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{
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goto _fail;
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}
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dev->user_data = btn;
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rt_hw_interrupt_install(btn->press_irq, e3x0_button_press_isr, btn, "button-e3x0-press");
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rt_hw_interrupt_umask(btn->press_irq);
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rt_hw_interrupt_install(btn->release_irq, e3x0_button_release_isr, btn, "button-e3x0-release");
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rt_hw_interrupt_umask(btn->release_irq);
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return RT_EOK;
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_fail:
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rt_free(btn);
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return err;
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}
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static rt_err_t e3x0_button_remove(struct rt_platform_device *pdev)
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{
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struct e3x0_button *btn = pdev->parent.user_data;
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rt_hw_interrupt_mask(btn->press_irq);
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rt_pic_detach_irq(btn->press_irq, btn);
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rt_hw_interrupt_mask(btn->release_irq);
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rt_pic_detach_irq(btn->release_irq, btn);
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rt_input_device_unregister(&btn->parent);
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rt_free(btn);
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return RT_EOK;
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}
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static const struct rt_ofw_node_id e3x0_button_ofw_ids[] =
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{
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{ .compatible = "ettus,e3x0-button" },
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{ /* sentinel */ }
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};
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static struct rt_platform_driver e3x0_button_driver =
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{
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.name = "e3x0-button",
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.ids = e3x0_button_ofw_ids,
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.probe = e3x0_button_probe,
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.remove = e3x0_button_remove,
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};
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RT_PLATFORM_DRIVER_EXPORT(e3x0_button_driver);
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