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/*
* drivers/macintosh/mac_hid.c
*
* HID support stuff for Macintosh computers.
*
* Copyright (C) 2000 Franz Sirl.
*
* This file will soon be removed in favor of an uinput userspace tool.
*/
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/sysctl.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/kbd_kern.h>
static struct input_dev *emumousebtn;
static int emumousebtn_input_register(void);
static int mouse_emulate_buttons;
static int mouse_button2_keycode = KEY_RIGHTCTRL; /* right control key */
static int mouse_button3_keycode = KEY_RIGHTALT; /* right option key */
static int mouse_last_keycode;
#if defined(CONFIG_SYSCTL)
/* file(s) in /proc/sys/dev/mac_hid */
static ctl_table mac_hid_files[] = {
{
.procname = "mouse_button_emulation",
.data = &mouse_emulate_buttons,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{
.procname = "mouse_button2_keycode",
.data = &mouse_button2_keycode,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{
.procname = "mouse_button3_keycode",
.data = &mouse_button3_keycode,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{ }
};
/* dir in /proc/sys/dev */
static ctl_table mac_hid_dir[] = {
{
.procname = "mac_hid",
.maxlen = 0,
.mode = 0555,
.child = mac_hid_files,
},
{ }
};
/* /proc/sys/dev itself, in case that is not there yet */
static ctl_table mac_hid_root_dir[] = {
{
.procname = "dev",
.maxlen = 0,
.mode = 0555,
.child = mac_hid_dir,
},
{ }
};
static struct ctl_table_header *mac_hid_sysctl_header;
#endif /* endif CONFIG_SYSCTL */
int mac_hid_mouse_emulate_buttons(int caller, unsigned int keycode, int down)
{
switch (caller) {
case 1:
/* Called from keyboard.c */
if (mouse_emulate_buttons
&& (keycode == mouse_button2_keycode
|| keycode == mouse_button3_keycode)) {
if (mouse_emulate_buttons == 1) {
input_report_key(emumousebtn,
keycode == mouse_button2_keycode ? BTN_MIDDLE : BTN_RIGHT,
down);
input_sync(emumousebtn);
return 1;
}
mouse_last_keycode = down ? keycode : 0;
}
break;
}
return 0;
}
static struct lock_class_key emumousebtn_event_class;
static struct lock_class_key emumousebtn_mutex_class;
static int emumousebtn_input_register(void)
{
int ret;
emumousebtn = input_allocate_device();
if (!emumousebtn)
return -ENOMEM;
lockdep_set_class(&emumousebtn->event_lock, &emumousebtn_event_class);
lockdep_set_class(&emumousebtn->mutex, &emumousebtn_mutex_class);
emumousebtn->name = "Macintosh mouse button emulation";
emumousebtn->id.bustype = BUS_ADB;
emumousebtn->id.vendor = 0x0001;
emumousebtn->id.product = 0x0001;
emumousebtn->id.version = 0x0100;
emumousebtn->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
emumousebtn->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
emumousebtn->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
ret = input_register_device(emumousebtn);
if (ret)
input_free_device(emumousebtn);
return ret;
}
static int __init mac_hid_init(void)
{
int err;
err = emumousebtn_input_register();
if (err)
return err;
#if defined(CONFIG_SYSCTL)
mac_hid_sysctl_header = register_sysctl_table(mac_hid_root_dir);
#endif /* CONFIG_SYSCTL */
return 0;
}
device_initcall(mac_hid_init);
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