a3d.c
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- /*
- * $Id: a3d.c,v 1.14 2001/04/26 10:24:46 vojtech Exp $
- *
- * Copyright (c) 1998-2001 Vojtech Pavlik
- *
- * Sponsored by SuSE
- */
- /*
- * FP-Gaming Assasin 3D 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/module.h>
- #include <linux/slab.h>
- #include <linux/init.h>
- #include <linux/gameport.h>
- #include <linux/input.h>
- #define A3D_MAX_START 400 /* 400 us */
- #define A3D_MAX_STROBE 60 /* 40 us */
- #define A3D_DELAY_READ 3 /* 3 ms */
- #define A3D_MAX_LENGTH 40 /* 40*3 bits */
- #define A3D_REFRESH_TIME HZ/50 /* 20 ms */
- #define A3D_MODE_A3D 1 /* Assassin 3D */
- #define A3D_MODE_PAN 2 /* Panther */
- #define A3D_MODE_OEM 3 /* Panther OEM version */
- #define A3D_MODE_PXL 4 /* Panther XL */
- char *a3d_names[] = { NULL, "FP-Gaming Assassin 3D", "MadCatz Panther", "OEM Panther",
- "MadCatz Panther XL", "MadCatz Panther XL w/ rudder" };
- struct a3d {
- struct gameport *gameport;
- struct gameport adc;
- struct input_dev dev;
- struct timer_list timer;
- int axes[4];
- int buttons;
- int mode;
- int length;
- int used;
- int reads;
- int bads;
- };
- /*
- * a3d_read_packet() reads an Assassin 3D packet.
- */
- static int a3d_read_packet(struct gameport *gameport, int length, char *data)
- {
- unsigned long flags;
- unsigned char u, v;
- unsigned int t, s;
- int i;
- i = 0;
- t = gameport_time(gameport, A3D_MAX_START);
- s = gameport_time(gameport, A3D_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 & 0x10) {
- data[i++] = v >> 5;
- t = s;
- }
- }
- __restore_flags(flags);
- return i;
- }
- /*
- * a3d_csum() computes checksum of triplet packet
- */
- static int a3d_csum(char *data, int count)
- {
- int i, csum = 0;
- for (i = 0; i < count - 2; i++) csum += data[i];
- return (csum & 0x3f) != ((data[count - 2] << 3) | data[count - 1]);
- }
- static void a3d_read(struct a3d *a3d, unsigned char *data)
- {
- struct input_dev *dev = &a3d->dev;
- switch (a3d->mode) {
- case A3D_MODE_A3D:
- case A3D_MODE_OEM:
- case A3D_MODE_PAN:
- input_report_rel(dev, REL_X, ((data[5] << 6) | (data[6] << 3) | data[ 7]) - ((data[5] & 4) << 7));
- input_report_rel(dev, REL_Y, ((data[8] << 6) | (data[9] << 3) | data[10]) - ((data[8] & 4) << 7));
-
- input_report_key(dev, BTN_RIGHT, data[2] & 1);
- input_report_key(dev, BTN_LEFT, data[3] & 2);
- input_report_key(dev, BTN_MIDDLE, data[3] & 4);
- a3d->axes[0] = ((signed char)((data[11] << 6) | (data[12] << 3) | (data[13]))) + 128;
- a3d->axes[1] = ((signed char)((data[14] << 6) | (data[15] << 3) | (data[16]))) + 128;
- a3d->axes[2] = ((signed char)((data[17] << 6) | (data[18] << 3) | (data[19]))) + 128;
- a3d->axes[3] = ((signed char)((data[20] << 6) | (data[21] << 3) | (data[22]))) + 128;
- a3d->buttons = ((data[3] << 3) | data[4]) & 0xf;
- return;
- case A3D_MODE_PXL:
- input_report_rel(dev, REL_X, ((data[ 9] << 6) | (data[10] << 3) | data[11]) - ((data[ 9] & 4) << 7));
- input_report_rel(dev, REL_Y, ((data[12] << 6) | (data[13] << 3) | data[14]) - ((data[12] & 4) << 7));
- input_report_key(dev, BTN_RIGHT, data[2] & 1);
- input_report_key(dev, BTN_LEFT, data[3] & 2);
- input_report_key(dev, BTN_MIDDLE, data[3] & 4);
- input_report_key(dev, BTN_SIDE, data[7] & 2);
- input_report_key(dev, BTN_EXTRA, data[7] & 4);
- input_report_abs(dev, ABS_X, ((signed char)((data[15] << 6) | (data[16] << 3) | (data[17]))) + 128);
- input_report_abs(dev, ABS_Y, ((signed char)((data[18] << 6) | (data[19] << 3) | (data[20]))) + 128);
- input_report_abs(dev, ABS_RUDDER, ((signed char)((data[21] << 6) | (data[22] << 3) | (data[23]))) + 128);
- input_report_abs(dev, ABS_THROTTLE, ((signed char)((data[24] << 6) | (data[25] << 3) | (data[26]))) + 128);
- input_report_abs(dev, ABS_HAT0X, ( data[5] & 1) - ((data[5] >> 2) & 1));
- input_report_abs(dev, ABS_HAT0Y, ((data[5] >> 1) & 1) - ((data[6] >> 2) & 1));
- input_report_abs(dev, ABS_HAT1X, ((data[4] >> 1) & 1) - ( data[3] & 1));
- input_report_abs(dev, ABS_HAT1Y, ((data[4] >> 2) & 1) - ( data[4] & 1));
- input_report_key(dev, BTN_TRIGGER, data[8] & 1);
- input_report_key(dev, BTN_THUMB, data[8] & 2);
- input_report_key(dev, BTN_TOP, data[8] & 4);
- input_report_key(dev, BTN_PINKIE, data[7] & 1);
- return;
- }
- }
- /*
- * a3d_timer() reads and analyzes A3D joystick data.
- */
- static void a3d_timer(unsigned long private)
- {
- struct a3d *a3d = (void *) private;
- unsigned char data[A3D_MAX_LENGTH];
- a3d->reads++;
- if (a3d_read_packet(a3d->gameport, a3d->length, data) != a3d->length
- || data[0] != a3d->mode || a3d_csum(data, a3d->length))
- a3d->bads++; else a3d_read(a3d, data);
- mod_timer(&a3d->timer, jiffies + A3D_REFRESH_TIME);
- }
- /*
- * a3d_adc_cooked_read() copies the acis and button data to the
- * callers arrays. It could do the read itself, but the caller could
- * call this more than 50 times a second, which would use too much CPU.
- */
- int a3d_adc_cooked_read(struct gameport *gameport, int *axes, int *buttons)
- {
- struct a3d *a3d = gameport->private;
- int i;
- for (i = 0; i < 4; i++)
- axes[i] = (a3d->axes[i] < 254) ? a3d->axes[i] : -1;
- *buttons = a3d->buttons;
- return 0;
- }
- /*
- * a3d_adc_open() is the gameport open routine. It refuses to serve
- * any but cooked data.
- */
- int a3d_adc_open(struct gameport *gameport, int mode)
- {
- struct a3d *a3d = gameport->private;
- if (mode != GAMEPORT_MODE_COOKED)
- return -1;
- if (!a3d->used++)
- mod_timer(&a3d->timer, jiffies + A3D_REFRESH_TIME);
- return 0;
- }
- /*
- * a3d_adc_close() is a callback from the input close routine.
- */
- static void a3d_adc_close(struct gameport *gameport)
- {
- struct a3d *a3d = gameport->private;
- if (!--a3d->used)
- del_timer(&a3d->timer);
- }
- /*
- * a3d_open() is a callback from the input open routine.
- */
- static int a3d_open(struct input_dev *dev)
- {
- struct a3d *a3d = dev->private;
- if (!a3d->used++)
- mod_timer(&a3d->timer, jiffies + A3D_REFRESH_TIME);
- return 0;
- }
- /*
- * a3d_close() is a callback from the input close routine.
- */
- static void a3d_close(struct input_dev *dev)
- {
- struct a3d *a3d = dev->private;
- if (!--a3d->used)
- del_timer(&a3d->timer);
- }
- /*
- * a3d_connect() probes for A3D joysticks.
- */
- static void a3d_connect(struct gameport *gameport, struct gameport_dev *dev)
- {
- struct a3d *a3d;
- unsigned char data[A3D_MAX_LENGTH];
- int i;
- if (!(a3d = kmalloc(sizeof(struct a3d), GFP_KERNEL)))
- return;
- memset(a3d, 0, sizeof(struct a3d));
- gameport->private = a3d;
- a3d->gameport = gameport;
- init_timer(&a3d->timer);
- a3d->timer.data = (long) a3d;
- a3d->timer.function = a3d_timer;
- if (gameport_open(gameport, dev, GAMEPORT_MODE_RAW))
- goto fail1;
- i = a3d_read_packet(gameport, A3D_MAX_LENGTH, data);
- if (!i || a3d_csum(data, i))
- goto fail2;
- a3d->mode = data[0];
- if (!a3d->mode || a3d->mode > 5) {
- printk(KERN_WARNING "a3d.c: Unknown A3D device detected "
- "(gameport%d, id=%d), contact <vojtech@suse.cz>n", gameport->number, a3d->mode);
- goto fail2;
- }
- if (a3d->mode == A3D_MODE_PXL) {
- int axes[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RUDDER };
- a3d->length = 33;
- a3d->dev.evbit[0] |= BIT(EV_ABS) | BIT(EV_KEY) | BIT(EV_REL);
- a3d->dev.relbit[0] |= BIT(REL_X) | BIT(REL_Y);
- a3d->dev.absbit[0] |= BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_THROTTLE) | BIT(ABS_RUDDER)
- | BIT(ABS_HAT0X) | BIT(ABS_HAT0Y) | BIT(ABS_HAT1X) | BIT(ABS_HAT1Y);
- a3d->dev.keybit[LONG(BTN_MOUSE)] |= BIT(BTN_RIGHT) | BIT(BTN_LEFT) | BIT(BTN_MIDDLE)
- | BIT(BTN_SIDE) | BIT(BTN_EXTRA);
- a3d->dev.keybit[LONG(BTN_JOYSTICK)] |= BIT(BTN_TRIGGER) | BIT(BTN_THUMB) | BIT(BTN_TOP) | BIT(BTN_PINKIE);
- a3d_read(a3d, data);
- for (i = 0; i < 4; i++) {
- if (i < 2) {
- a3d->dev.absmin[axes[i]] = 48;
- a3d->dev.absmax[axes[i]] = a3d->dev.abs[axes[i]] * 2 - 48;
- a3d->dev.absflat[axes[i]] = 8;
- } else {
- a3d->dev.absmin[axes[i]] = 2;
- a3d->dev.absmax[axes[i]] = 253;
- }
- a3d->dev.absmin[ABS_HAT0X + i] = -1;
- a3d->dev.absmax[ABS_HAT0X + i] = 1;
- }
- } else {
- a3d->length = 29;
- a3d->dev.evbit[0] |= BIT(EV_KEY) | BIT(EV_REL);
- a3d->dev.relbit[0] |= BIT(REL_X) | BIT(REL_Y);
- a3d->dev.keybit[LONG(BTN_MOUSE)] |= BIT(BTN_RIGHT) | BIT(BTN_LEFT) | BIT(BTN_MIDDLE);
- a3d->adc.private = a3d;
- a3d->adc.open = a3d_adc_open;
- a3d->adc.close = a3d_adc_close;
- a3d->adc.cooked_read = a3d_adc_cooked_read;
- a3d->adc.fuzz = 1;
- a3d_read(a3d, data);
- gameport_register_port(&a3d->adc);
- printk(KERN_INFO "gameport%d: %s on gameport%d.0n",
- a3d->adc.number, a3d_names[a3d->mode], gameport->number);
- }
- a3d->dev.private = a3d;
- a3d->dev.open = a3d_open;
- a3d->dev.close = a3d_close;
- a3d->dev.name = a3d_names[a3d->mode];
- a3d->dev.idbus = BUS_GAMEPORT;
- a3d->dev.idvendor = GAMEPORT_ID_VENDOR_MADCATZ;
- a3d->dev.idproduct = a3d->mode;
- a3d->dev.idversion = 0x0100;
- input_register_device(&a3d->dev);
- printk(KERN_INFO "input%d: %s on gameport%d.0n",
- a3d->dev.number, a3d_names[a3d->mode], gameport->number);
- return;
- fail2: gameport_close(gameport);
- fail1: kfree(a3d);
- }
- static void a3d_disconnect(struct gameport *gameport)
- {
- struct a3d *a3d = gameport->private;
- input_unregister_device(&a3d->dev);
- if (a3d->mode < A3D_MODE_PXL)
- gameport_unregister_port(&a3d->adc);
- gameport_close(gameport);
- kfree(a3d);
- }
- static struct gameport_dev a3d_dev = {
- connect: a3d_connect,
- disconnect: a3d_disconnect,
- };
- int __init a3d_init(void)
- {
- gameport_register_device(&a3d_dev);
- return 0;
- }
- void __exit a3d_exit(void)
- {
- gameport_unregister_device(&a3d_dev);
- }
- module_init(a3d_init);
- module_exit(a3d_exit);
- MODULE_LICENSE("GPL");