/* * $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 , or by paper mail: * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic */ #include #include #include #include #include #include #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 \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.0\n", 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.0\n", 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");