1 /* 2 * $Id: xtkbd.c,v 1.11 2001/09/25 10:12:07 vojtech Exp $ 3 * 4 * Copyright (c) 1999-2001 Vojtech Pavlik 5 */ 6 7 /* 8 * XT keyboard driver for Linux 9 */ 10 11 /* 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 25 * 26 * Should you need to contact me, the author, you can do so either by 27 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 28 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 29 */ 30 31 #include <linux/slab.h> 32 #include <linux/module.h> 33 #include <linux/input.h> 34 #include <linux/init.h> 35 #include <linux/serio.h> 36 37 #define DRIVER_DESC "XT keyboard driver" 38 39 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 40 MODULE_DESCRIPTION(DRIVER_DESC); 41 MODULE_LICENSE("GPL"); 42 43 #define XTKBD_EMUL0 0xe0 44 #define XTKBD_EMUL1 0xe1 45 #define XTKBD_KEY 0x7f 46 #define XTKBD_RELEASE 0x80 47 48 static unsigned char xtkbd_keycode[256] = { 49 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 50 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 51 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 52 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 53 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 54 80, 81, 82, 83, 0, 0, 0, 87, 88, 0, 0, 0, 0, 0, 0, 0, 55 0, 0, 0, 0, 0, 87, 88, 0, 0, 0, 0,110,111,103,108,105, 56 106 57 }; 58 59 static char *xtkbd_name = "XT Keyboard"; 60 61 struct xtkbd { 62 unsigned char keycode[256]; 63 struct input_dev dev; 64 struct serio *serio; 65 char phys[32]; 66 }; 67 68 static irqreturn_t xtkbd_interrupt(struct serio *serio, 69 unsigned char data, unsigned int flags, struct pt_regs *regs) 70 { 71 struct xtkbd *xtkbd = serio_get_drvdata(serio); 72 73 switch (data) { 74 case XTKBD_EMUL0: 75 case XTKBD_EMUL1: 76 break; 77 default: 78 79 if (xtkbd->keycode[data & XTKBD_KEY]) { 80 input_regs(&xtkbd->dev, regs); 81 input_report_key(&xtkbd->dev, xtkbd->keycode[data & XTKBD_KEY], !(data & XTKBD_RELEASE)); 82 input_sync(&xtkbd->dev); 83 } else { 84 printk(KERN_WARNING "xtkbd.c: Unknown key (scancode %#x) %s.\n", 85 data & XTKBD_KEY, data & XTKBD_RELEASE ? "released" : "pressed"); 86 } 87 } 88 return IRQ_HANDLED; 89 } 90 91 static int xtkbd_connect(struct serio *serio, struct serio_driver *drv) 92 { 93 struct xtkbd *xtkbd; 94 int i; 95 int err; 96 97 if (!(xtkbd = kmalloc(sizeof(struct xtkbd), GFP_KERNEL))) 98 return -ENOMEM; 99 100 memset(xtkbd, 0, sizeof(struct xtkbd)); 101 102 xtkbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP); 103 104 xtkbd->serio = serio; 105 106 init_input_dev(&xtkbd->dev); 107 xtkbd->dev.keycode = xtkbd->keycode; 108 xtkbd->dev.keycodesize = sizeof(unsigned char); 109 xtkbd->dev.keycodemax = ARRAY_SIZE(xtkbd_keycode); 110 xtkbd->dev.private = xtkbd; 111 112 serio_set_drvdata(serio, xtkbd); 113 114 err = serio_open(serio, drv); 115 if (err) { 116 serio_set_drvdata(serio, NULL); 117 kfree(xtkbd); 118 return err; 119 } 120 121 memcpy(xtkbd->keycode, xtkbd_keycode, sizeof(xtkbd->keycode)); 122 for (i = 0; i < 255; i++) 123 set_bit(xtkbd->keycode[i], xtkbd->dev.keybit); 124 clear_bit(0, xtkbd->dev.keybit); 125 126 sprintf(xtkbd->phys, "%s/input0", serio->phys); 127 128 xtkbd->dev.name = xtkbd_name; 129 xtkbd->dev.phys = xtkbd->phys; 130 xtkbd->dev.id.bustype = BUS_XTKBD; 131 xtkbd->dev.id.vendor = 0x0001; 132 xtkbd->dev.id.product = 0x0001; 133 xtkbd->dev.id.version = 0x0100; 134 xtkbd->dev.dev = &serio->dev; 135 136 input_register_device(&xtkbd->dev); 137 138 printk(KERN_INFO "input: %s on %s\n", xtkbd_name, serio->phys); 139 140 return 0; 141 } 142 143 static void xtkbd_disconnect(struct serio *serio) 144 { 145 struct xtkbd *xtkbd = serio_get_drvdata(serio); 146 147 input_unregister_device(&xtkbd->dev); 148 serio_close(serio); 149 serio_set_drvdata(serio, NULL); 150 kfree(xtkbd); 151 } 152 153 static struct serio_device_id xtkbd_serio_ids[] = { 154 { 155 .type = SERIO_XT, 156 .proto = SERIO_ANY, 157 .id = SERIO_ANY, 158 .extra = SERIO_ANY, 159 }, 160 { 0 } 161 }; 162 163 MODULE_DEVICE_TABLE(serio, xtkbd_serio_ids); 164 165 static struct serio_driver xtkbd_drv = { 166 .driver = { 167 .name = "xtkbd", 168 }, 169 .description = DRIVER_DESC, 170 .id_table = xtkbd_serio_ids, 171 .interrupt = xtkbd_interrupt, 172 .connect = xtkbd_connect, 173 .disconnect = xtkbd_disconnect, 174 }; 175 176 static int __init xtkbd_init(void) 177 { 178 serio_register_driver(&xtkbd_drv); 179 return 0; 180 } 181 182 static void __exit xtkbd_exit(void) 183 { 184 serio_unregister_driver(&xtkbd_drv); 185 } 186 187 module_init(xtkbd_init); 188 module_exit(xtkbd_exit); 189