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v3.1
 
  1/*
  2 *  Input Power Event -> APM Bridge
  3 *
  4 *  Copyright (c) 2007 Richard Purdie
  5 *
  6 *  This program is free software; you can redistribute it and/or modify
  7 *  it under the terms of the GNU General Public License version 2 as
  8 *  published by the Free Software Foundation.
  9 *
 10 */
 11
 12#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 13
 14#include <linux/module.h>
 15#include <linux/input.h>
 16#include <linux/slab.h>
 17#include <linux/init.h>
 18#include <linux/tty.h>
 19#include <linux/delay.h>
 20#include <linux/pm.h>
 21#include <linux/apm-emulation.h>
 22
 23static void system_power_event(unsigned int keycode)
 24{
 25	switch (keycode) {
 26	case KEY_SUSPEND:
 27		apm_queue_event(APM_USER_SUSPEND);
 28		pr_info("Requesting system suspend...\n");
 29		break;
 30	default:
 31		break;
 32	}
 33}
 34
 35static void apmpower_event(struct input_handle *handle, unsigned int type,
 36		        unsigned int code, int value)
 37{
 38	/* only react on key down events */
 39	if (value != 1)
 40		return;
 41
 42	switch (type) {
 43	case EV_PWR:
 44		system_power_event(code);
 45		break;
 46
 47	default:
 48		break;
 49	}
 50}
 51
 52static int apmpower_connect(struct input_handler *handler,
 53					  struct input_dev *dev,
 54					  const struct input_device_id *id)
 55{
 56	struct input_handle *handle;
 57	int error;
 58
 59	handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
 60	if (!handle)
 61		return -ENOMEM;
 62
 63	handle->dev = dev;
 64	handle->handler = handler;
 65	handle->name = "apm-power";
 66
 67	error = input_register_handle(handle);
 68	if (error) {
 69		pr_err("Failed to register input power handler, error %d\n",
 70		       error);
 71		kfree(handle);
 72		return error;
 73	}
 74
 75	error = input_open_device(handle);
 76	if (error) {
 77		pr_err("Failed to open input power device, error %d\n", error);
 78		input_unregister_handle(handle);
 79		kfree(handle);
 80		return error;
 81	}
 82
 83	return 0;
 84}
 85
 86static void apmpower_disconnect(struct input_handle *handle)
 87{
 88	input_close_device(handle);
 89	input_unregister_handle(handle);
 90	kfree(handle);
 91}
 92
 93static const struct input_device_id apmpower_ids[] = {
 94	{
 95		.flags = INPUT_DEVICE_ID_MATCH_EVBIT,
 96		.evbit = { BIT_MASK(EV_PWR) },
 97	},
 98	{ },
 99};
100
101MODULE_DEVICE_TABLE(input, apmpower_ids);
102
103static struct input_handler apmpower_handler = {
104	.event =	apmpower_event,
105	.connect =	apmpower_connect,
106	.disconnect =	apmpower_disconnect,
107	.name =		"apm-power",
108	.id_table =	apmpower_ids,
109};
110
111static int __init apmpower_init(void)
112{
113	return input_register_handler(&apmpower_handler);
114}
115
116static void __exit apmpower_exit(void)
117{
118	input_unregister_handler(&apmpower_handler);
119}
120
121module_init(apmpower_init);
122module_exit(apmpower_exit);
123
124MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
125MODULE_DESCRIPTION("Input Power Event -> APM Bridge");
126MODULE_LICENSE("GPL");
v6.9.4
  1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 *  Input Power Event -> APM Bridge
  4 *
  5 *  Copyright (c) 2007 Richard Purdie
 
 
 
 
 
  6 */
  7
  8#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  9
 10#include <linux/module.h>
 11#include <linux/input.h>
 12#include <linux/slab.h>
 13#include <linux/init.h>
 14#include <linux/tty.h>
 15#include <linux/delay.h>
 16#include <linux/pm.h>
 17#include <linux/apm-emulation.h>
 18
 19static void system_power_event(unsigned int keycode)
 20{
 21	switch (keycode) {
 22	case KEY_SUSPEND:
 23		apm_queue_event(APM_USER_SUSPEND);
 24		pr_info("Requesting system suspend...\n");
 25		break;
 26	default:
 27		break;
 28	}
 29}
 30
 31static void apmpower_event(struct input_handle *handle, unsigned int type,
 32			   unsigned int code, int value)
 33{
 34	/* only react on key down events */
 35	if (value != 1)
 36		return;
 37
 38	switch (type) {
 39	case EV_PWR:
 40		system_power_event(code);
 41		break;
 42
 43	default:
 44		break;
 45	}
 46}
 47
 48static int apmpower_connect(struct input_handler *handler,
 49					  struct input_dev *dev,
 50					  const struct input_device_id *id)
 51{
 52	struct input_handle *handle;
 53	int error;
 54
 55	handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
 56	if (!handle)
 57		return -ENOMEM;
 58
 59	handle->dev = dev;
 60	handle->handler = handler;
 61	handle->name = "apm-power";
 62
 63	error = input_register_handle(handle);
 64	if (error) {
 65		pr_err("Failed to register input power handler, error %d\n",
 66		       error);
 67		kfree(handle);
 68		return error;
 69	}
 70
 71	error = input_open_device(handle);
 72	if (error) {
 73		pr_err("Failed to open input power device, error %d\n", error);
 74		input_unregister_handle(handle);
 75		kfree(handle);
 76		return error;
 77	}
 78
 79	return 0;
 80}
 81
 82static void apmpower_disconnect(struct input_handle *handle)
 83{
 84	input_close_device(handle);
 85	input_unregister_handle(handle);
 86	kfree(handle);
 87}
 88
 89static const struct input_device_id apmpower_ids[] = {
 90	{
 91		.flags = INPUT_DEVICE_ID_MATCH_EVBIT,
 92		.evbit = { BIT_MASK(EV_PWR) },
 93	},
 94	{ },
 95};
 96
 97MODULE_DEVICE_TABLE(input, apmpower_ids);
 98
 99static struct input_handler apmpower_handler = {
100	.event =	apmpower_event,
101	.connect =	apmpower_connect,
102	.disconnect =	apmpower_disconnect,
103	.name =		"apm-power",
104	.id_table =	apmpower_ids,
105};
106
107static int __init apmpower_init(void)
108{
109	return input_register_handler(&apmpower_handler);
110}
111
112static void __exit apmpower_exit(void)
113{
114	input_unregister_handler(&apmpower_handler);
115}
116
117module_init(apmpower_init);
118module_exit(apmpower_exit);
119
120MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
121MODULE_DESCRIPTION("Input Power Event -> APM Bridge");
122MODULE_LICENSE("GPL");