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 #include <linux/kbd_kern.h> 17 18 19 static struct input_dev *emumousebtn; 20 static int emumousebtn_input_register(void); 21 static int mouse_emulate_buttons; 22 static int mouse_button2_keycode = KEY_RIGHTCTRL; /* right control key */ 23 static int mouse_button3_keycode = KEY_RIGHTALT; /* right option key */ 24 static int mouse_last_keycode; 25 26 #if defined(CONFIG_SYSCTL) 27 /* file(s) in /proc/sys/dev/mac_hid */ 28 static ctl_table mac_hid_files[] = { 29 { 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 .procname = "mouse_button2_keycode", 38 .data = &mouse_button2_keycode, 39 .maxlen = sizeof(int), 40 .mode = 0644, 41 .proc_handler = &proc_dointvec, 42 }, 43 { 44 .procname = "mouse_button3_keycode", 45 .data = &mouse_button3_keycode, 46 .maxlen = sizeof(int), 47 .mode = 0644, 48 .proc_handler = &proc_dointvec, 49 }, 50 { } 51 }; 52 53 /* dir in /proc/sys/dev */ 54 static ctl_table mac_hid_dir[] = { 55 { 56 .procname = "mac_hid", 57 .maxlen = 0, 58 .mode = 0555, 59 .child = mac_hid_files, 60 }, 61 { } 62 }; 63 64 /* /proc/sys/dev itself, in case that is not there yet */ 65 static ctl_table mac_hid_root_dir[] = { 66 { 67 .procname = "dev", 68 .maxlen = 0, 69 .mode = 0555, 70 .child = mac_hid_dir, 71 }, 72 { } 73 }; 74 75 static struct ctl_table_header *mac_hid_sysctl_header; 76 77 #endif /* endif CONFIG_SYSCTL */ 78 79 int mac_hid_mouse_emulate_buttons(int caller, unsigned int keycode, int down) 80 { 81 switch (caller) { 82 case 1: 83 /* Called from keyboard.c */ 84 if (mouse_emulate_buttons 85 && (keycode == mouse_button2_keycode 86 || keycode == mouse_button3_keycode)) { 87 if (mouse_emulate_buttons == 1) { 88 input_report_key(emumousebtn, 89 keycode == mouse_button2_keycode ? BTN_MIDDLE : BTN_RIGHT, 90 down); 91 input_sync(emumousebtn); 92 return 1; 93 } 94 mouse_last_keycode = down ? keycode : 0; 95 } 96 break; 97 } 98 return 0; 99 } 100 101 static struct lock_class_key emumousebtn_event_class; 102 static struct lock_class_key emumousebtn_mutex_class; 103 104 static int emumousebtn_input_register(void) 105 { 106 int ret; 107 108 emumousebtn = input_allocate_device(); 109 if (!emumousebtn) 110 return -ENOMEM; 111 112 lockdep_set_class(&emumousebtn->event_lock, &emumousebtn_event_class); 113 lockdep_set_class(&emumousebtn->mutex, &emumousebtn_mutex_class); 114 115 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; 120 121 emumousebtn->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 122 emumousebtn->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | 123 BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); 124 emumousebtn->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 125 126 ret = input_register_device(emumousebtn); 127 if (ret) 128 input_free_device(emumousebtn); 129 130 return ret; 131 } 132 133 static int __init mac_hid_init(void) 134 { 135 int err; 136 137 err = emumousebtn_input_register(); 138 if (err) 139 return err; 140 141 #if defined(CONFIG_SYSCTL) 142 mac_hid_sysctl_header = register_sysctl_table(mac_hid_root_dir); 143 #endif /* CONFIG_SYSCTL */ 144 145 return 0; 146 } 147 148 device_initcall(mac_hid_init); 149