Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |