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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * drivers/macintosh/mac_hid.c
3 *
4 * HID support stuff for Macintosh computers.
5 *
6 * Copyright (C) 2000 Franz Sirl.
7 *
8 * This file will soon be removed in favor of an uinput userspace tool.
9 */
10
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#include <linux/init.h>
12#include <linux/proc_fs.h>
13#include <linux/sysctl.h>
14#include <linux/input.h>
15#include <linux/module.h>
16
17
Dmitry Torokhovc7f7a562005-09-15 02:01:41 -050018static struct input_dev *emumousebtn;
19static int emumousebtn_input_register(void);
Olaf Hering87275852007-02-10 21:35:12 +010020static int mouse_emulate_buttons;
Linus Torvalds1da177e2005-04-16 15:20:36 -070021static int mouse_button2_keycode = KEY_RIGHTCTRL; /* right control key */
22static int mouse_button3_keycode = KEY_RIGHTALT; /* right option key */
Olaf Hering87275852007-02-10 21:35:12 +010023static int mouse_last_keycode;
Linus Torvalds1da177e2005-04-16 15:20:36 -070024
25#if defined(CONFIG_SYSCTL)
26/* file(s) in /proc/sys/dev/mac_hid */
27ctl_table mac_hid_files[] = {
28 {
29 .ctl_name = DEV_MAC_HID_MOUSE_BUTTON_EMULATION,
30 .procname = "mouse_button_emulation",
31 .data = &mouse_emulate_buttons,
32 .maxlen = sizeof(int),
33 .mode = 0644,
34 .proc_handler = &proc_dointvec,
35 },
36 {
37 .ctl_name = DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE,
38 .procname = "mouse_button2_keycode",
39 .data = &mouse_button2_keycode,
40 .maxlen = sizeof(int),
41 .mode = 0644,
42 .proc_handler = &proc_dointvec,
43 },
44 {
45 .ctl_name = DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE,
46 .procname = "mouse_button3_keycode",
47 .data = &mouse_button3_keycode,
48 .maxlen = sizeof(int),
49 .mode = 0644,
50 .proc_handler = &proc_dointvec,
51 },
52 { .ctl_name = 0 }
53};
54
55/* dir in /proc/sys/dev */
56ctl_table mac_hid_dir[] = {
57 {
58 .ctl_name = DEV_MAC_HID,
59 .procname = "mac_hid",
60 .maxlen = 0,
61 .mode = 0555,
62 .child = mac_hid_files,
63 },
64 { .ctl_name = 0 }
65};
66
67/* /proc/sys/dev itself, in case that is not there yet */
68ctl_table mac_hid_root_dir[] = {
69 {
70 .ctl_name = CTL_DEV,
71 .procname = "dev",
72 .maxlen = 0,
73 .mode = 0555,
74 .child = mac_hid_dir,
75 },
76 { .ctl_name = 0 }
77};
78
79static struct ctl_table_header *mac_hid_sysctl_header;
80
81#endif /* endif CONFIG_SYSCTL */
82
83int mac_hid_mouse_emulate_buttons(int caller, unsigned int keycode, int down)
84{
85 switch (caller) {
86 case 1:
87 /* Called from keyboard.c */
88 if (mouse_emulate_buttons
89 && (keycode == mouse_button2_keycode
90 || keycode == mouse_button3_keycode)) {
91 if (mouse_emulate_buttons == 1) {
Dmitry Torokhovc7f7a562005-09-15 02:01:41 -050092 input_report_key(emumousebtn,
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 keycode == mouse_button2_keycode ? BTN_MIDDLE : BTN_RIGHT,
94 down);
Dmitry Torokhovc7f7a562005-09-15 02:01:41 -050095 input_sync(emumousebtn);
Linus Torvalds1da177e2005-04-16 15:20:36 -070096 return 1;
97 }
98 mouse_last_keycode = down ? keycode : 0;
99 }
100 break;
101 }
102 return 0;
103}
104
105EXPORT_SYMBOL(mac_hid_mouse_emulate_buttons);
106
Dmitry Torokhovc7f7a562005-09-15 02:01:41 -0500107static int emumousebtn_input_register(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108{
Dmitry Torokhov4bdbd282006-11-24 00:43:22 -0500109 int ret;
110
Dmitry Torokhovc7f7a562005-09-15 02:01:41 -0500111 emumousebtn = input_allocate_device();
112 if (!emumousebtn)
113 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114
Dmitry Torokhovc7f7a562005-09-15 02:01:41 -0500115 emumousebtn->name = "Macintosh mouse button emulation";
116 emumousebtn->id.bustype = BUS_ADB;
117 emumousebtn->id.vendor = 0x0001;
118 emumousebtn->id.product = 0x0001;
119 emumousebtn->id.version = 0x0100;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120
Dmitry Torokhovc7f7a562005-09-15 02:01:41 -0500121 emumousebtn->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
122 emumousebtn->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
123 emumousebtn->relbit[0] = BIT(REL_X) | BIT(REL_Y);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124
Dmitry Torokhov4bdbd282006-11-24 00:43:22 -0500125 ret = input_register_device(emumousebtn);
126 if (ret)
127 input_free_device(emumousebtn);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128
Dmitry Torokhov4bdbd282006-11-24 00:43:22 -0500129 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130}
131
132int __init mac_hid_init(void)
133{
Dmitry Torokhovc7f7a562005-09-15 02:01:41 -0500134 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135
Dmitry Torokhovc7f7a562005-09-15 02:01:41 -0500136 err = emumousebtn_input_register();
137 if (err)
138 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139
140#if defined(CONFIG_SYSCTL)
Eric W. Biederman0b4d4142007-02-14 00:34:09 -0800141 mac_hid_sysctl_header = register_sysctl_table(mac_hid_root_dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142#endif /* CONFIG_SYSCTL */
143
144 return 0;
145}
146
147device_initcall(mac_hid_init);