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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>
Geert Uytterhoeven23010602007-08-22 14:01:35 -070016#include <linux/kbd_kern.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070017
18
Dmitry Torokhovc7f7a562005-09-15 02:01:41 -050019static struct input_dev *emumousebtn;
20static int emumousebtn_input_register(void);
Olaf Hering87275852007-02-10 21:35:12 +010021static int mouse_emulate_buttons;
Linus Torvalds1da177e2005-04-16 15:20:36 -070022static int mouse_button2_keycode = KEY_RIGHTCTRL; /* right control key */
23static int mouse_button3_keycode = KEY_RIGHTALT; /* right option key */
Olaf Hering87275852007-02-10 21:35:12 +010024static int mouse_last_keycode;
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
26#if defined(CONFIG_SYSCTL)
27/* file(s) in /proc/sys/dev/mac_hid */
Adrian Bunkf3e5d2b2007-03-08 09:41:07 +110028static ctl_table mac_hid_files[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070029 {
30 .ctl_name = DEV_MAC_HID_MOUSE_BUTTON_EMULATION,
31 .procname = "mouse_button_emulation",
32 .data = &mouse_emulate_buttons,
33 .maxlen = sizeof(int),
34 .mode = 0644,
35 .proc_handler = &proc_dointvec,
36 },
37 {
38 .ctl_name = DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE,
39 .procname = "mouse_button2_keycode",
40 .data = &mouse_button2_keycode,
41 .maxlen = sizeof(int),
42 .mode = 0644,
43 .proc_handler = &proc_dointvec,
44 },
45 {
46 .ctl_name = DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE,
47 .procname = "mouse_button3_keycode",
48 .data = &mouse_button3_keycode,
49 .maxlen = sizeof(int),
50 .mode = 0644,
51 .proc_handler = &proc_dointvec,
52 },
53 { .ctl_name = 0 }
54};
55
56/* dir in /proc/sys/dev */
Adrian Bunkf3e5d2b2007-03-08 09:41:07 +110057static ctl_table mac_hid_dir[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070058 {
59 .ctl_name = DEV_MAC_HID,
60 .procname = "mac_hid",
61 .maxlen = 0,
62 .mode = 0555,
63 .child = mac_hid_files,
64 },
65 { .ctl_name = 0 }
66};
67
68/* /proc/sys/dev itself, in case that is not there yet */
Adrian Bunkf3e5d2b2007-03-08 09:41:07 +110069static ctl_table mac_hid_root_dir[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 {
71 .ctl_name = CTL_DEV,
72 .procname = "dev",
73 .maxlen = 0,
74 .mode = 0555,
75 .child = mac_hid_dir,
76 },
77 { .ctl_name = 0 }
78};
79
80static struct ctl_table_header *mac_hid_sysctl_header;
81
82#endif /* endif CONFIG_SYSCTL */
83
84int mac_hid_mouse_emulate_buttons(int caller, unsigned int keycode, int down)
85{
86 switch (caller) {
87 case 1:
88 /* Called from keyboard.c */
89 if (mouse_emulate_buttons
90 && (keycode == mouse_button2_keycode
91 || keycode == mouse_button3_keycode)) {
92 if (mouse_emulate_buttons == 1) {
Dmitry Torokhovc7f7a562005-09-15 02:01:41 -050093 input_report_key(emumousebtn,
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 keycode == mouse_button2_keycode ? BTN_MIDDLE : BTN_RIGHT,
95 down);
Dmitry Torokhovc7f7a562005-09-15 02:01:41 -050096 input_sync(emumousebtn);
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 return 1;
98 }
99 mouse_last_keycode = down ? keycode : 0;
100 }
101 break;
102 }
103 return 0;
104}
105
Dmitry Torokhovc7f7a562005-09-15 02:01:41 -0500106static int emumousebtn_input_register(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107{
Dmitry Torokhov4bdbd282006-11-24 00:43:22 -0500108 int ret;
109
Dmitry Torokhovc7f7a562005-09-15 02:01:41 -0500110 emumousebtn = input_allocate_device();
111 if (!emumousebtn)
112 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113
Dmitry Torokhovc7f7a562005-09-15 02:01:41 -0500114 emumousebtn->name = "Macintosh mouse button emulation";
115 emumousebtn->id.bustype = BUS_ADB;
116 emumousebtn->id.vendor = 0x0001;
117 emumousebtn->id.product = 0x0001;
118 emumousebtn->id.version = 0x0100;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119
Jiri Slaby7b19ada2007-10-18 23:40:32 -0700120 emumousebtn->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
121 emumousebtn->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
122 BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
123 emumousebtn->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(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
Adrian Bunkf3e5d2b2007-03-08 09:41:07 +1100132static int __init mac_hid_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133{
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);