1 /* 2 * Copyright (c) 2000 Justin Cormack 3 */ 4 5 /* 6 * Newton keyboard driver for Linux 7 */ 8 9 /* 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 * 24 * Should you need to contact me, the author, you can do so either by 25 * e-mail - mail your message to <j.cormack@doc.ic.ac.uk>, or by paper mail: 26 * Justin Cormack, 68 Dartmouth Park Road, London NW5 1SN, UK. 27 */ 28 29 #include <linux/slab.h> 30 #include <linux/module.h> 31 #include <linux/input.h> 32 #include <linux/init.h> 33 #include <linux/serio.h> 34 35 #define DRIVER_DESC "Newton keyboard driver" 36 37 MODULE_AUTHOR("Justin Cormack <j.cormack@doc.ic.ac.uk>"); 38 MODULE_DESCRIPTION(DRIVER_DESC); 39 MODULE_LICENSE("GPL"); 40 41 #define NKBD_KEY 0x7f 42 #define NKBD_PRESS 0x80 43 44 static unsigned char nkbd_keycode[128] = { 45 KEY_A, KEY_S, KEY_D, KEY_F, KEY_H, KEY_G, KEY_Z, KEY_X, 46 KEY_C, KEY_V, 0, KEY_B, KEY_Q, KEY_W, KEY_E, KEY_R, 47 KEY_Y, KEY_T, KEY_1, KEY_2, KEY_3, KEY_4, KEY_6, KEY_5, 48 KEY_EQUAL, KEY_9, KEY_7, KEY_MINUS, KEY_8, KEY_0, KEY_RIGHTBRACE, KEY_O, 49 KEY_U, KEY_LEFTBRACE, KEY_I, KEY_P, KEY_ENTER, KEY_L, KEY_J, KEY_APOSTROPHE, 50 KEY_K, KEY_SEMICOLON, KEY_BACKSLASH, KEY_COMMA, KEY_SLASH, KEY_N, KEY_M, KEY_DOT, 51 KEY_TAB, KEY_SPACE, KEY_GRAVE, KEY_DELETE, 0, 0, 0, KEY_LEFTMETA, 52 KEY_LEFTSHIFT, KEY_CAPSLOCK, KEY_LEFTALT, KEY_LEFTCTRL, KEY_RIGHTSHIFT, 0, 0, 0, 53 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 54 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 55 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 56 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 57 KEY_LEFT, KEY_RIGHT, KEY_DOWN, KEY_UP, 0 58 }; 59 60 static char *nkbd_name = "Newton Keyboard"; 61 62 struct nkbd { 63 unsigned char keycode[128]; 64 struct input_dev dev; 65 struct serio *serio; 66 char phys[32]; 67 }; 68 69 static irqreturn_t nkbd_interrupt(struct serio *serio, 70 unsigned char data, unsigned int flags, struct pt_regs *regs) 71 { 72 struct nkbd *nkbd = serio_get_drvdata(serio); 73 74 /* invalid scan codes are probably the init sequence, so we ignore them */ 75 if (nkbd->keycode[data & NKBD_KEY]) { 76 input_regs(&nkbd->dev, regs); 77 input_report_key(&nkbd->dev, nkbd->keycode[data & NKBD_KEY], data & NKBD_PRESS); 78 input_sync(&nkbd->dev); 79 } 80 81 else if (data == 0xe7) /* end of init sequence */ 82 printk(KERN_INFO "input: %s on %s\n", nkbd_name, serio->phys); 83 return IRQ_HANDLED; 84 85 } 86 87 static int nkbd_connect(struct serio *serio, struct serio_driver *drv) 88 { 89 struct nkbd *nkbd; 90 int i; 91 int err; 92 93 if (!(nkbd = kmalloc(sizeof(struct nkbd), GFP_KERNEL))) 94 return -ENOMEM; 95 96 memset(nkbd, 0, sizeof(struct nkbd)); 97 98 nkbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP); 99 100 nkbd->serio = serio; 101 102 init_input_dev(&nkbd->dev); 103 nkbd->dev.keycode = nkbd->keycode; 104 nkbd->dev.keycodesize = sizeof(unsigned char); 105 nkbd->dev.keycodemax = ARRAY_SIZE(nkbd_keycode); 106 nkbd->dev.private = nkbd; 107 108 serio_set_drvdata(serio, nkbd); 109 110 err = serio_open(serio, drv); 111 if (err) { 112 serio_set_drvdata(serio, NULL); 113 kfree(nkbd); 114 return err; 115 } 116 117 memcpy(nkbd->keycode, nkbd_keycode, sizeof(nkbd->keycode)); 118 for (i = 0; i < 128; i++) 119 set_bit(nkbd->keycode[i], nkbd->dev.keybit); 120 clear_bit(0, nkbd->dev.keybit); 121 122 sprintf(nkbd->phys, "%s/input0", serio->phys); 123 124 nkbd->dev.name = nkbd_name; 125 nkbd->dev.phys = nkbd->phys; 126 nkbd->dev.id.bustype = BUS_RS232; 127 nkbd->dev.id.vendor = SERIO_NEWTON; 128 nkbd->dev.id.product = 0x0001; 129 nkbd->dev.id.version = 0x0100; 130 nkbd->dev.dev = &serio->dev; 131 132 input_register_device(&nkbd->dev); 133 134 printk(KERN_INFO "input: %s on %s\n", nkbd_name, serio->phys); 135 136 return 0; 137 } 138 139 static void nkbd_disconnect(struct serio *serio) 140 { 141 struct nkbd *nkbd = serio_get_drvdata(serio); 142 143 input_unregister_device(&nkbd->dev); 144 serio_close(serio); 145 serio_set_drvdata(serio, NULL); 146 kfree(nkbd); 147 } 148 149 static struct serio_device_id nkbd_serio_ids[] = { 150 { 151 .type = SERIO_RS232, 152 .proto = SERIO_NEWTON, 153 .id = SERIO_ANY, 154 .extra = SERIO_ANY, 155 }, 156 { 0 } 157 }; 158 159 MODULE_DEVICE_TABLE(serio, nkbd_serio_ids); 160 161 static struct serio_driver nkbd_drv = { 162 .driver = { 163 .name = "newtonkbd", 164 }, 165 .description = DRIVER_DESC, 166 .id_table = nkbd_serio_ids, 167 .interrupt = nkbd_interrupt, 168 .connect = nkbd_connect, 169 .disconnect = nkbd_disconnect, 170 }; 171 172 static int __init nkbd_init(void) 173 { 174 serio_register_driver(&nkbd_drv); 175 return 0; 176 } 177 178 static void __exit nkbd_exit(void) 179 { 180 serio_unregister_driver(&nkbd_drv); 181 } 182 183 module_init(nkbd_init); 184 module_exit(nkbd_exit); 185