1 /* 2 * $Id: inport.c,v 1.11 2001/09/25 10:12:07 vojtech Exp $ 3 * 4 * Copyright (c) 1999-2001 Vojtech Pavlik 5 * 6 * Based on the work of: 7 * Teemu Rantanen Derrick Cole 8 * Peter Cervasio Christoph Niemann 9 * Philip Blundell Russell King 10 * Bob Harris 11 */ 12 13 /* 14 * Inport (ATI XL and Microsoft) busmouse driver for Linux 15 */ 16 17 /* 18 * This program is free software; you can redistribute it and/or modify 19 * it under the terms of the GNU General Public License as published by 20 * the Free Software Foundation; either version 2 of the License, or 21 * (at your option) any later version. 22 * 23 * This program is distributed in the hope that it will be useful, 24 * but WITHOUT ANY WARRANTY; without even the implied warranty of 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 26 * GNU General Public License for more details. 27 * 28 * You should have received a copy of the GNU General Public License 29 * along with this program; if not, write to the Free Software 30 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 31 * 32 * Should you need to contact me, the author, you can do so either by 33 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 34 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 35 */ 36 37 #include <linux/module.h> 38 #include <linux/moduleparam.h> 39 #include <linux/config.h> 40 #include <linux/ioport.h> 41 #include <linux/init.h> 42 #include <linux/interrupt.h> 43 #include <linux/input.h> 44 45 #include <asm/io.h> 46 #include <asm/irq.h> 47 48 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 49 MODULE_DESCRIPTION("Inport (ATI XL and Microsoft) busmouse driver"); 50 MODULE_LICENSE("GPL"); 51 52 #define INPORT_BASE 0x23c 53 #define INPORT_EXTENT 4 54 55 #define INPORT_CONTROL_PORT INPORT_BASE + 0 56 #define INPORT_DATA_PORT INPORT_BASE + 1 57 #define INPORT_SIGNATURE_PORT INPORT_BASE + 2 58 59 #define INPORT_REG_BTNS 0x00 60 #define INPORT_REG_X 0x01 61 #define INPORT_REG_Y 0x02 62 #define INPORT_REG_MODE 0x07 63 #define INPORT_RESET 0x80 64 65 #ifdef CONFIG_INPUT_ATIXL 66 #define INPORT_NAME "ATI XL Mouse" 67 #define INPORT_VENDOR 0x0002 68 #define INPORT_SPEED_30HZ 0x01 69 #define INPORT_SPEED_50HZ 0x02 70 #define INPORT_SPEED_100HZ 0x03 71 #define INPORT_SPEED_200HZ 0x04 72 #define INPORT_MODE_BASE INPORT_SPEED_100HZ 73 #define INPORT_MODE_IRQ 0x08 74 #else 75 #define INPORT_NAME "Microsoft InPort Mouse" 76 #define INPORT_VENDOR 0x0001 77 #define INPORT_MODE_BASE 0x10 78 #define INPORT_MODE_IRQ 0x01 79 #endif 80 #define INPORT_MODE_HOLD 0x20 81 82 #define INPORT_IRQ 5 83 84 static int inport_irq = INPORT_IRQ; 85 module_param_named(irq, inport_irq, uint, 0); 86 MODULE_PARM_DESC(irq, "IRQ number (5=default)"); 87 88 __obsolete_setup("inport_irq="); 89 90 static int inport_used; 91 92 static irqreturn_t inport_interrupt(int irq, void *dev_id, struct pt_regs *regs); 93 94 static int inport_open(struct input_dev *dev) 95 { 96 if (!inport_used++) { 97 if (request_irq(inport_irq, inport_interrupt, 0, "inport", NULL)) 98 return -EBUSY; 99 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); 100 outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); 101 } 102 103 return 0; 104 } 105 106 static void inport_close(struct input_dev *dev) 107 { 108 if (!--inport_used) { 109 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); 110 outb(INPORT_MODE_BASE, INPORT_DATA_PORT); 111 free_irq(inport_irq, NULL); 112 } 113 } 114 115 static struct input_dev inport_dev = { 116 .evbit = { BIT(EV_KEY) | BIT(EV_REL) }, 117 .keybit = { [LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT) }, 118 .relbit = { BIT(REL_X) | BIT(REL_Y) }, 119 .open = inport_open, 120 .close = inport_close, 121 .name = INPORT_NAME, 122 .phys = "isa023c/input0", 123 .id = { 124 .bustype = BUS_ISA, 125 .vendor = INPORT_VENDOR, 126 .product = 0x0001, 127 .version = 0x0100, 128 }, 129 }; 130 131 static irqreturn_t inport_interrupt(int irq, void *dev_id, struct pt_regs *regs) 132 { 133 unsigned char buttons; 134 135 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); 136 outb(INPORT_MODE_HOLD | INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); 137 138 input_regs(&inport_dev, regs); 139 140 outb(INPORT_REG_X, INPORT_CONTROL_PORT); 141 input_report_rel(&inport_dev, REL_X, inb(INPORT_DATA_PORT)); 142 143 outb(INPORT_REG_Y, INPORT_CONTROL_PORT); 144 input_report_rel(&inport_dev, REL_Y, inb(INPORT_DATA_PORT)); 145 146 outb(INPORT_REG_BTNS, INPORT_CONTROL_PORT); 147 buttons = inb(INPORT_DATA_PORT); 148 149 input_report_key(&inport_dev, BTN_MIDDLE, buttons & 1); 150 input_report_key(&inport_dev, BTN_LEFT, buttons & 2); 151 input_report_key(&inport_dev, BTN_RIGHT, buttons & 4); 152 153 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); 154 outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); 155 156 input_sync(&inport_dev); 157 return IRQ_HANDLED; 158 } 159 160 static int __init inport_init(void) 161 { 162 unsigned char a,b,c; 163 164 if (!request_region(INPORT_BASE, INPORT_EXTENT, "inport")) { 165 printk(KERN_ERR "inport.c: Can't allocate ports at %#x\n", INPORT_BASE); 166 return -EBUSY; 167 } 168 169 a = inb(INPORT_SIGNATURE_PORT); 170 b = inb(INPORT_SIGNATURE_PORT); 171 c = inb(INPORT_SIGNATURE_PORT); 172 if (( a == b ) || ( a != c )) { 173 release_region(INPORT_BASE, INPORT_EXTENT); 174 printk(KERN_ERR "inport.c: Didn't find InPort mouse at %#x\n", INPORT_BASE); 175 return -ENODEV; 176 } 177 178 outb(INPORT_RESET, INPORT_CONTROL_PORT); 179 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); 180 outb(INPORT_MODE_BASE, INPORT_DATA_PORT); 181 182 input_register_device(&inport_dev); 183 184 printk(KERN_INFO "input: " INPORT_NAME " at %#x irq %d\n", INPORT_BASE, inport_irq); 185 186 return 0; 187 } 188 189 static void __exit inport_exit(void) 190 { 191 input_unregister_device(&inport_dev); 192 release_region(INPORT_BASE, INPORT_EXTENT); 193 } 194 195 module_init(inport_init); 196 module_exit(inport_exit); 197