interact.c
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上传日期:2013-04-10
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文件大小:8k
- /*
- * $Id: interact.c,v 1.8 2000/05/29 11:19:51 vojtech Exp $
- *
- * Copyright (c) 2000 Vojtech Pavlik
- *
- * Based on the work of:
- * Toby Deshane
- *
- * Sponsored by SuSE
- */
- /*
- * InterAct digital gamepad/joystick driver for Linux
- */
- /*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Should you need to contact me, the author, you can do so either by
- * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
- * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
- */
- #include <linux/kernel.h>
- #include <linux/slab.h>
- #include <linux/module.h>
- #include <linux/delay.h>
- #include <linux/init.h>
- #include <linux/gameport.h>
- #include <linux/input.h>
- #define INTERACT_MAX_START 400 /* 400 us */
- #define INTERACT_MAX_STROBE 40 /* 40 us */
- #define INTERACT_MAX_LENGTH 32 /* 32 bits */
- #define INTERACT_REFRESH_TIME HZ/50 /* 20 ms */
- #define INTERACT_TYPE_HHFX 0 /* HammerHead/FX */
- #define INTERACT_TYPE_PP8D 1 /* ProPad 8 */
- struct interact {
- struct gameport *gameport;
- struct input_dev dev;
- struct timer_list timer;
- int used;
- int bads;
- int reads;
- unsigned char type;
- unsigned char length;
- };
- static short interact_abs_hhfx[] =
- { ABS_RX, ABS_RY, ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y, -1 };
- static short interact_abs_pp8d[] =
- { ABS_X, ABS_Y, -1 };
- static short interact_btn_hhfx[] =
- { BTN_TR, BTN_X, BTN_Y, BTN_Z, BTN_A, BTN_B, BTN_C, BTN_TL, BTN_TL2, BTN_TR2, BTN_MODE, BTN_SELECT, -1 };
- static short interact_btn_pp8d[] =
- { BTN_C, BTN_TL, BTN_TR, BTN_A, BTN_B, BTN_Y, BTN_Z, BTN_X, -1 };
- struct interact_type {
- int id;
- short *abs;
- short *btn;
- char *name;
- unsigned char length;
- unsigned char b8;
- };
- static struct interact_type interact_type[] = {
- { 0x6202, interact_abs_hhfx, interact_btn_hhfx, "InterAct HammerHead/FX", 32, 4 },
- { 0x53f8, interact_abs_pp8d, interact_btn_pp8d, "InterAct ProPad 8 Digital", 16, 0 },
- { 0 }};
- /*
- * interact_read_packet() reads and InterAct joystick data.
- */
- static int interact_read_packet(struct gameport *gameport, int length, u32 *data)
- {
- unsigned long flags;
- unsigned char u, v;
- unsigned int t, s;
- int i;
- i = 0;
- data[0] = data[1] = data[2] = 0;
- t = gameport_time(gameport, INTERACT_MAX_START);
- s = gameport_time(gameport, INTERACT_MAX_STROBE);
- __save_flags(flags);
- __cli();
- gameport_trigger(gameport);
- v = gameport_read(gameport);
- while (t > 0 && i < length) {
- t--;
- u = v; v = gameport_read(gameport);
- if (v & ~u & 0x40) {
- data[0] = (data[0] << 1) | ((v >> 4) & 1);
- data[1] = (data[1] << 1) | ((v >> 5) & 1);
- data[2] = (data[2] << 1) | ((v >> 7) & 1);
- i++;
- t = s;
- }
- }
- __restore_flags(flags);
- return i;
- }
- /*
- * interact_timer() reads and analyzes InterAct joystick data.
- */
- static void interact_timer(unsigned long private)
- {
- struct interact *interact = (struct interact *) private;
- struct input_dev *dev = &interact->dev;
- u32 data[3];
- int i;
- interact->reads++;
- if (interact_read_packet(interact->gameport, interact->length, data) < interact->length) {
- interact->bads++;
- } else
- for (i = 0; i < 3; i++)
- data[i] <<= INTERACT_MAX_LENGTH - interact->length;
- switch (interact->type) {
- case INTERACT_TYPE_HHFX:
- for (i = 0; i < 4; i++)
- input_report_abs(dev, interact_abs_hhfx[i], (data[i & 1] >> ((i >> 1) << 3)) & 0xff);
- for (i = 0; i < 2; i++)
- input_report_abs(dev, ABS_HAT0Y - i,
- ((data[1] >> ((i << 1) + 17)) & 1) - ((data[1] >> ((i << 1) + 16)) & 1));
- for (i = 0; i < 8; i++)
- input_report_key(dev, interact_btn_hhfx[i], (data[0] >> (i + 16)) & 1);
- for (i = 0; i < 4; i++)
- input_report_key(dev, interact_btn_hhfx[i + 8], (data[1] >> (i + 20)) & 1);
- break;
- case INTERACT_TYPE_PP8D:
- for (i = 0; i < 2; i++)
- input_report_abs(dev, interact_abs_pp8d[i],
- ((data[0] >> ((i << 1) + 20)) & 1) - ((data[0] >> ((i << 1) + 21)) & 1));
- for (i = 0; i < 8; i++)
- input_report_key(dev, interact_btn_pp8d[i], (data[1] >> (i + 16)) & 1);
- break;
- }
- mod_timer(&interact->timer, jiffies + INTERACT_REFRESH_TIME);
- }
- /*
- * interact_open() is a callback from the input open routine.
- */
- static int interact_open(struct input_dev *dev)
- {
- struct interact *interact = dev->private;
- if (!interact->used++)
- mod_timer(&interact->timer, jiffies + INTERACT_REFRESH_TIME);
- return 0;
- }
- /*
- * interact_close() is a callback from the input close routine.
- */
- static void interact_close(struct input_dev *dev)
- {
- struct interact *interact = dev->private;
- if (!--interact->used)
- del_timer(&interact->timer);
- }
- /*
- * interact_connect() probes for InterAct joysticks.
- */
- static void interact_connect(struct gameport *gameport, struct gameport_dev *dev)
- {
- struct interact *interact;
- __u32 data[3];
- int i, t;
- if (!(interact = kmalloc(sizeof(struct interact), GFP_KERNEL)))
- return;
- memset(interact, 0, sizeof(struct interact));
- gameport->private = interact;
- interact->gameport = gameport;
- init_timer(&interact->timer);
- interact->timer.data = (long) interact;
- interact->timer.function = interact_timer;
- if (gameport_open(gameport, dev, GAMEPORT_MODE_RAW))
- goto fail1;
- i = interact_read_packet(gameport, INTERACT_MAX_LENGTH * 2, data);
- if (i != 32 || (data[0] >> 24) != 0x0c || (data[1] >> 24) != 0x02) {
- goto fail2;
- }
- for (i = 0; interact_type[i].length; i++)
- if (interact_type[i].id == (data[2] >> 16))
- break;
- if (!interact_type[i].length) {
- printk(KERN_WARNING "interact.c: Unknown joystick on gameport%d. [len %d d0 %08x d1 %08x i2 %08x]n",
- gameport->number, i, data[0], data[1], data[2]);
- goto fail2;
- }
- interact->type = i;
- interact->length = interact_type[i].length;
- interact->dev.private = interact;
- interact->dev.open = interact_open;
- interact->dev.close = interact_close;
- interact->dev.name = interact_type[i].name;
- interact->dev.idbus = BUS_GAMEPORT;
- interact->dev.idvendor = GAMEPORT_ID_VENDOR_INTERACT;
- interact->dev.idproduct = interact_type[i].id;
- interact->dev.idversion = 0x0100;
- interact->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
- for (i = 0; (t = interact_type[interact->type].abs[i]) >= 0; i++) {
- set_bit(t, interact->dev.absbit);
- if (i < interact_type[interact->type].b8) {
- interact->dev.absmin[t] = 0;
- interact->dev.absmax[t] = 255;
- } else {
- interact->dev.absmin[t] = -1;
- interact->dev.absmax[t] = 1;
- }
- }
- for (i = 0; (t = interact_type[interact->type].btn[i]) >= 0; i++)
- set_bit(t, interact->dev.keybit);
- input_register_device(&interact->dev);
- printk(KERN_INFO "input%d: %s on gameport%d.0n",
- interact->dev.number, interact_type[interact->type].name, gameport->number);
- return;
- fail2: gameport_close(gameport);
- fail1: kfree(interact);
- }
- static void interact_disconnect(struct gameport *gameport)
- {
- struct interact *interact = gameport->private;
- input_unregister_device(&interact->dev);
- gameport_close(gameport);
- kfree(interact);
- }
- static struct gameport_dev interact_dev = {
- connect: interact_connect,
- disconnect: interact_disconnect,
- };
- int __init interact_init(void)
- {
- gameport_register_device(&interact_dev);
- return 0;
- }
- void __exit interact_exit(void)
- {
- gameport_unregister_device(&interact_dev);
- }
- module_init(interact_init);
- module_exit(interact_exit);
- MODULE_LICENSE("GPL");