Contributors: 17
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Dmitry Torokhov |
581 |
61.68% |
8 |
16.67% |
| Linus Torvalds (pre-git) |
204 |
21.66% |
19 |
39.58% |
| Vojtech Pavlik |
70 |
7.43% |
7 |
14.58% |
| Alan Cox |
48 |
5.10% |
1 |
2.08% |
| James Simmons |
7 |
0.74% |
1 |
2.08% |
| Jiri Slaby |
7 |
0.74% |
1 |
2.08% |
| Peter Zijlstra |
6 |
0.64% |
1 |
2.08% |
| Luis R. Rodriguez |
4 |
0.42% |
1 |
2.08% |
| Art Haas |
4 |
0.42% |
1 |
2.08% |
| Harvey Harrison |
2 |
0.21% |
1 |
2.08% |
| Adrian Bunk |
2 |
0.21% |
1 |
2.08% |
| Joe Perches |
2 |
0.21% |
1 |
2.08% |
| Linus Torvalds |
1 |
0.11% |
1 |
2.08% |
| Michael Still |
1 |
0.11% |
1 |
2.08% |
| Thomas Gleixner |
1 |
0.11% |
1 |
2.08% |
| Eric W. Biedermann |
1 |
0.11% |
1 |
2.08% |
| Franz Sirl |
1 |
0.11% |
1 |
2.08% |
| Total |
942 |
|
48 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* 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/slab.h>
MODULE_LICENSE("GPL");
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 struct input_dev *mac_hid_emumouse_dev;
static DEFINE_MUTEX(mac_hid_emumouse_mutex);
static int mac_hid_create_emumouse(void)
{
static struct lock_class_key mac_hid_emumouse_dev_event_class;
static struct lock_class_key mac_hid_emumouse_dev_mutex_class;
int err;
mac_hid_emumouse_dev = input_allocate_device();
if (!mac_hid_emumouse_dev)
return -ENOMEM;
lockdep_set_class(&mac_hid_emumouse_dev->event_lock,
&mac_hid_emumouse_dev_event_class);
lockdep_set_class(&mac_hid_emumouse_dev->mutex,
&mac_hid_emumouse_dev_mutex_class);
mac_hid_emumouse_dev->name = "Macintosh mouse button emulation";
mac_hid_emumouse_dev->id.bustype = BUS_ADB;
mac_hid_emumouse_dev->id.vendor = 0x0001;
mac_hid_emumouse_dev->id.product = 0x0001;
mac_hid_emumouse_dev->id.version = 0x0100;
mac_hid_emumouse_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
mac_hid_emumouse_dev->keybit[BIT_WORD(BTN_MOUSE)] =
BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
mac_hid_emumouse_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
err = input_register_device(mac_hid_emumouse_dev);
if (err) {
input_free_device(mac_hid_emumouse_dev);
mac_hid_emumouse_dev = NULL;
return err;
}
return 0;
}
static void mac_hid_destroy_emumouse(void)
{
input_unregister_device(mac_hid_emumouse_dev);
mac_hid_emumouse_dev = NULL;
}
static bool mac_hid_emumouse_filter(struct input_handle *handle,
unsigned int type, unsigned int code,
int value)
{
unsigned int btn;
if (type != EV_KEY)
return false;
if (code == mouse_button2_keycode)
btn = BTN_MIDDLE;
else if (code == mouse_button3_keycode)
btn = BTN_RIGHT;
else
return false;
input_report_key(mac_hid_emumouse_dev, btn, value);
input_sync(mac_hid_emumouse_dev);
return true;
}
static int mac_hid_emumouse_connect(struct input_handler *handler,
struct input_dev *dev,
const struct input_device_id *id)
{
struct input_handle *handle;
int error;
/* Don't bind to ourselves */
if (dev == mac_hid_emumouse_dev)
return -ENODEV;
handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
if (!handle)
return -ENOMEM;
handle->dev = dev;
handle->handler = handler;
handle->name = "mac-button-emul";
error = input_register_handle(handle);
if (error) {
printk(KERN_ERR
"mac_hid: Failed to register button emulation handle, "
"error %d\n", error);
goto err_free;
}
error = input_open_device(handle);
if (error) {
printk(KERN_ERR
"mac_hid: Failed to open input device, error %d\n",
error);
goto err_unregister;
}
return 0;
err_unregister:
input_unregister_handle(handle);
err_free:
kfree(handle);
return error;
}
static void mac_hid_emumouse_disconnect(struct input_handle *handle)
{
input_close_device(handle);
input_unregister_handle(handle);
kfree(handle);
}
static const struct input_device_id mac_hid_emumouse_ids[] = {
{
.flags = INPUT_DEVICE_ID_MATCH_EVBIT,
.evbit = { BIT_MASK(EV_KEY) },
},
{ },
};
MODULE_DEVICE_TABLE(input, mac_hid_emumouse_ids);
static struct input_handler mac_hid_emumouse_handler = {
.filter = mac_hid_emumouse_filter,
.connect = mac_hid_emumouse_connect,
.disconnect = mac_hid_emumouse_disconnect,
.name = "mac-button-emul",
.id_table = mac_hid_emumouse_ids,
};
static int mac_hid_start_emulation(void)
{
int err;
err = mac_hid_create_emumouse();
if (err)
return err;
err = input_register_handler(&mac_hid_emumouse_handler);
if (err) {
mac_hid_destroy_emumouse();
return err;
}
return 0;
}
static void mac_hid_stop_emulation(void)
{
input_unregister_handler(&mac_hid_emumouse_handler);
mac_hid_destroy_emumouse();
}
static int mac_hid_toggle_emumouse(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
int *valp = table->data;
int old_val = *valp;
int rc;
rc = mutex_lock_killable(&mac_hid_emumouse_mutex);
if (rc)
return rc;
rc = proc_dointvec(table, write, buffer, lenp, ppos);
if (rc == 0 && write && *valp != old_val) {
if (*valp == 1)
rc = mac_hid_start_emulation();
else if (*valp == 0)
mac_hid_stop_emulation();
else
rc = -EINVAL;
}
/* Restore the old value in case of error */
if (rc)
*valp = old_val;
mutex_unlock(&mac_hid_emumouse_mutex);
return rc;
}
/* file(s) in /proc/sys/dev/mac_hid */
static struct ctl_table mac_hid_files[] = {
{
.procname = "mouse_button_emulation",
.data = &mouse_emulate_buttons,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = mac_hid_toggle_emumouse,
},
{
.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,
},
{ }
};
static struct ctl_table_header *mac_hid_sysctl_header;
static int __init mac_hid_init(void)
{
mac_hid_sysctl_header = register_sysctl("dev/mac_hid", mac_hid_files);
if (!mac_hid_sysctl_header)
return -ENOMEM;
return 0;
}
module_init(mac_hid_init);
static void __exit mac_hid_exit(void)
{
unregister_sysctl_table(mac_hid_sysctl_header);
if (mouse_emulate_buttons)
mac_hid_stop_emulation();
}
module_exit(mac_hid_exit);