it87: Add support for the IT8716F
[linux-2.6] / drivers / macintosh / mac_hid.c
1 /*
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
11 #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
18 static struct input_dev *emumousebtn;
19 static int emumousebtn_input_register(void);
20 static int mouse_emulate_buttons = 0;
21 static int mouse_button2_keycode = KEY_RIGHTCTRL;       /* right control key */
22 static int mouse_button3_keycode = KEY_RIGHTALT;        /* right option key */
23 static int mouse_last_keycode = 0;
24
25 #if defined(CONFIG_SYSCTL)
26 /* file(s) in /proc/sys/dev/mac_hid */
27 ctl_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 */
56 ctl_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 */
68 ctl_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
79 static struct ctl_table_header *mac_hid_sysctl_header;
80
81 #endif /* endif CONFIG_SYSCTL */
82
83 int 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) {
92                                 input_report_key(emumousebtn,
93                                                  keycode == mouse_button2_keycode ? BTN_MIDDLE : BTN_RIGHT,
94                                                  down);
95                                 input_sync(emumousebtn);
96                                 return 1;
97                         }
98                         mouse_last_keycode = down ? keycode : 0;
99                 }
100                 break;
101         }
102         return 0;
103 }
104
105 EXPORT_SYMBOL(mac_hid_mouse_emulate_buttons);
106
107 static int emumousebtn_input_register(void)
108 {
109         emumousebtn = input_allocate_device();
110         if (!emumousebtn)
111                 return -ENOMEM;
112
113         emumousebtn->name = "Macintosh mouse button emulation";
114         emumousebtn->id.bustype = BUS_ADB;
115         emumousebtn->id.vendor = 0x0001;
116         emumousebtn->id.product = 0x0001;
117         emumousebtn->id.version = 0x0100;
118
119         emumousebtn->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
120         emumousebtn->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
121         emumousebtn->relbit[0] = BIT(REL_X) | BIT(REL_Y);
122
123         input_register_device(emumousebtn);
124
125         return 0;
126 }
127
128 int __init mac_hid_init(void)
129 {
130         int err;
131
132         err = emumousebtn_input_register();
133         if (err)
134                 return err;
135
136 #if defined(CONFIG_SYSCTL)
137         mac_hid_sysctl_header = register_sysctl_table(mac_hid_root_dir, 1);
138 #endif /* CONFIG_SYSCTL */
139
140         return 0;
141 }
142
143 device_initcall(mac_hid_init);