// SPDX-License-Identifier: GPL-2.0-only/* *  Input Power Event -> APM Bridge * *  Copyright (c) 2007 Richard Purdie */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h>#include <linux/input.h>#include <linux/slab.h>#include <linux/init.h>#include <linux/tty.h>#include <linux/delay.h>#include <linux/pm.h>#include <linux/apm-emulation.h> static void system_power_event(unsigned int keycode){	switch (keycode) {	case KEY_SUSPEND:		apm_queue_event(APM_USER_SUSPEND);		pr_info("Requesting system suspend...\n");		break;	default:		break;	}} static void apmpower_event(struct input_handle *handle, unsigned int type,			   unsigned int code, int value){	/* only react on key down events */	if (value != 1)		return; 	switch (type) {	case EV_PWR:		system_power_event(code);		break; 	default:		break;	}} static int apmpower_connect(struct input_handler *handler,					  struct input_dev *dev,					  const struct input_device_id *id){	struct input_handle *handle;	int error; 	handle = kzalloc_obj(struct input_handle);	if (!handle)		return -ENOMEM; 	handle->dev = dev;	handle->handler = handler;	handle->name = "apm-power"; 	error = input_register_handle(handle);	if (error) {		pr_err("Failed to register input power handler, error %d\n",		       error);		kfree(handle);		return error;	} 	error = input_open_device(handle);	if (error) {		pr_err("Failed to open input power device, error %d\n", error);		input_unregister_handle(handle);		kfree(handle);		return error;	} 	return 0;} static void apmpower_disconnect(struct input_handle *handle){	input_close_device(handle);	input_unregister_handle(handle);	kfree(handle);} static const struct input_device_id apmpower_ids[] = {	{		.flags = INPUT_DEVICE_ID_MATCH_EVBIT,		.evbit = { BIT_MASK(EV_PWR) },	},	{ },}; MODULE_DEVICE_TABLE(input, apmpower_ids); static struct input_handler apmpower_handler = {	.event =	apmpower_event,	.connect =	apmpower_connect,	.disconnect =	apmpower_disconnect,	.name =		"apm-power",	.id_table =	apmpower_ids,}; static int __init apmpower_init(void){	return input_register_handler(&apmpower_handler);} static void __exit apmpower_exit(void){	input_unregister_handler(&apmpower_handler);} module_init(apmpower_init);module_exit(apmpower_exit); MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");MODULE_DESCRIPTION("Input Power Event -> APM Bridge");MODULE_LICENSE("GPL");