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100 lines
2.2 KiB
100 lines
2.2 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (c) 1999-2001 Vojtech Pavlik |
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*/ |
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/* |
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* Input driver event debug module - dumps all events into syslog |
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*/ |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#include <linux/slab.h> |
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#include <linux/module.h> |
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#include <linux/input.h> |
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#include <linux/init.h> |
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#include <linux/device.h> |
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MODULE_AUTHOR("Vojtech Pavlik <[email protected]>"); |
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MODULE_DESCRIPTION("Input driver event debug module"); |
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MODULE_LICENSE("GPL"); |
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static void evbug_event(struct input_handle *handle, unsigned int type, unsigned int code, int value) |
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{ |
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printk(KERN_DEBUG pr_fmt("Event. Dev: %s, Type: %d, Code: %d, Value: %d\n"), |
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dev_name(&handle->dev->dev), type, code, value); |
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} |
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static int evbug_connect(struct input_handler *handler, struct input_dev *dev, |
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const struct input_device_id *id) |
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{ |
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struct input_handle *handle; |
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int error; |
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handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL); |
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if (!handle) |
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return -ENOMEM; |
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handle->dev = dev; |
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handle->handler = handler; |
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handle->name = "evbug"; |
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error = input_register_handle(handle); |
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if (error) |
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goto err_free_handle; |
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error = input_open_device(handle); |
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if (error) |
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goto err_unregister_handle; |
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printk(KERN_DEBUG pr_fmt("Connected device: %s (%s at %s)\n"), |
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dev_name(&dev->dev), |
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dev->name ?: "unknown", |
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dev->phys ?: "unknown"); |
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return 0; |
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err_unregister_handle: |
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input_unregister_handle(handle); |
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err_free_handle: |
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kfree(handle); |
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return error; |
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} |
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static void evbug_disconnect(struct input_handle *handle) |
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{ |
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printk(KERN_DEBUG pr_fmt("Disconnected device: %s\n"), |
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dev_name(&handle->dev->dev)); |
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input_close_device(handle); |
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input_unregister_handle(handle); |
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kfree(handle); |
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} |
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static const struct input_device_id evbug_ids[] = { |
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{ .driver_info = 1 }, /* Matches all devices */ |
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{ }, /* Terminating zero entry */ |
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}; |
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MODULE_DEVICE_TABLE(input, evbug_ids); |
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static struct input_handler evbug_handler = { |
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.event = evbug_event, |
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.connect = evbug_connect, |
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.disconnect = evbug_disconnect, |
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.name = "evbug", |
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.id_table = evbug_ids, |
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}; |
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static int __init evbug_init(void) |
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{ |
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return input_register_handler(&evbug_handler); |
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} |
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static void __exit evbug_exit(void) |
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{ |
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input_unregister_handler(&evbug_handler); |
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} |
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module_init(evbug_init); |
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module_exit(evbug_exit);
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