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 .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 */ 57 static ctl_table mac_hid_dir[] = { 58 { 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 */ 69 static ctl_table mac_hid_root_dir[] = { 70 { 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 80 static struct ctl_table_header *mac_hid_sysctl_header; 81 82 #endif /* endif CONFIG_SYSCTL */ 83 84 int 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) { 93 input_report_key(emumousebtn, 94 keycode == mouse_button2_keycode ? BTN_MIDDLE : BTN_RIGHT, 95 down); 96 input_sync(emumousebtn); 97 return 1; 98 } 99 mouse_last_keycode = down ? keycode : 0; 100 } 101 break; 102 } 103 return 0; 104 } 105 106 static int emumousebtn_input_register(void) 107 { 108 int ret; 109 110 emumousebtn = input_allocate_device(); 111 if (!emumousebtn) 112 return -ENOMEM; 113 114 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; 119 120 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); 124 125 ret = input_register_device(emumousebtn); 126 if (ret) 127 input_free_device(emumousebtn); 128 129 return ret; 130 } 131 132 static int __init mac_hid_init(void) 133 { 134 int err; 135 136 err = emumousebtn_input_register(); 137 if (err) 138 return err; 139 140 #if defined(CONFIG_SYSCTL) 141 mac_hid_sysctl_header = register_sysctl_table(mac_hid_root_dir); 142 #endif /* CONFIG_SYSCTL */ 143 144 return 0; 145 } 146 147 device_initcall(mac_hid_init); 148