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Release 4.11 drivers/input/misc/e3x0-button.c

/*
 * Copyright (c) 2014, National Instruments Corp. All rights reserved.
 *
 * Driver for NI Ettus Research USRP E3x0 Button Driver
 *
 * 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; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 */

#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/of.h>
#include <linux/slab.h>


static irqreturn_t e3x0_button_release_handler(int irq, void *data) { struct input_dev *idev = data; input_report_key(idev, KEY_POWER, 0); input_sync(idev); return IRQ_HANDLED; }

Contributors

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Moritz Fischer37100.00%1100.00%
Total37100.00%1100.00%


static irqreturn_t e3x0_button_press_handler(int irq, void *data) { struct input_dev *idev = data; input_report_key(idev, KEY_POWER, 1); pm_wakeup_event(idev->dev.parent, 0); input_sync(idev); return IRQ_HANDLED; }

Contributors

PersonTokensPropCommitsCommitProp
Moritz Fischer48100.00%1100.00%
Total48100.00%1100.00%


static int __maybe_unused e3x0_button_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); if (device_may_wakeup(dev)) enable_irq_wake(platform_get_irq_byname(pdev, "press")); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Moritz Fischer42100.00%1100.00%
Total42100.00%1100.00%


static int __maybe_unused e3x0_button_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); if (device_may_wakeup(dev)) disable_irq_wake(platform_get_irq_byname(pdev, "press")); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Moritz Fischer42100.00%1100.00%
Total42100.00%1100.00%

static SIMPLE_DEV_PM_OPS(e3x0_button_pm_ops, e3x0_button_suspend, e3x0_button_resume);
static int e3x0_button_probe(struct platform_device *pdev) { struct input_dev *input; int irq_press, irq_release; int error; irq_press = platform_get_irq_byname(pdev, "press"); if (irq_press < 0) { dev_err(&pdev->dev, "No IRQ for 'press', error=%d\n", irq_press); return irq_press; } irq_release = platform_get_irq_byname(pdev, "release"); if (irq_release < 0) { dev_err(&pdev->dev, "No IRQ for 'release', error=%d\n", irq_release); return irq_release; } input = devm_input_allocate_device(&pdev->dev); if (!input) return -ENOMEM; input->name = "NI Ettus Research USRP E3x0 Button Driver"; input->phys = "e3x0_button/input0"; input->dev.parent = &pdev->dev; input_set_capability(input, EV_KEY, KEY_POWER); error = devm_request_irq(&pdev->dev, irq_press, e3x0_button_press_handler, 0, "e3x0-button", input); if (error) { dev_err(&pdev->dev, "Failed to request 'press' IRQ#%d: %d\n", irq_press, error); return error; } error = devm_request_irq(&pdev->dev, irq_release, e3x0_button_release_handler, 0, "e3x0-button", input); if (error) { dev_err(&pdev->dev, "Failed to request 'release' IRQ#%d: %d\n", irq_release, error); return error; } error = input_register_device(input); if (error) { dev_err(&pdev->dev, "Can't register input device: %d\n", error); return error; } device_init_wakeup(&pdev->dev, 1); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Moritz Fischer266100.00%1100.00%
Total266100.00%1100.00%

#ifdef CONFIG_OF static const struct of_device_id e3x0_button_match[] = { { .compatible = "ettus,e3x0-button", }, { } }; MODULE_DEVICE_TABLE(of, e3x0_button_match); #endif static struct platform_driver e3x0_button_driver = { .driver = { .name = "e3x0-button", .of_match_table = of_match_ptr(e3x0_button_match), .pm = &e3x0_button_pm_ops, }, .probe = e3x0_button_probe, }; module_platform_driver(e3x0_button_driver); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Moritz Fischer <moritz.fischer@ettus.com>"); MODULE_DESCRIPTION("NI Ettus Research USRP E3x0 Button driver"); MODULE_ALIAS("platform:e3x0-button");

Overall Contributors

PersonTokensPropCommitsCommitProp
Moritz Fischer561100.00%1100.00%
Total561100.00%1100.00%
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