/* * $Id: interact.c,v 1.16 2002/01/22 20:28:25 vojtech Exp $ * * Copyright (c) 2001 Vojtech Pavlik * * Based on the work of: * Toby Deshane */ /* * 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@ucw.cz>, or by paper mail: * Vojtech Pavlik, Simunkova 1594, 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> #include <linux/jiffies.h> #define DRIVER_DESC "InterAct digital joystick driver" MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); #define INTERACT_MAX_START 600 /* 400 us */ #define INTERACT_MAX_STROBE 60 /* 40 us */ #define INTERACT_MAX_LENGTH 32 /* 32 bits */ #define INTERACT_TYPE_HHFX 0 /* HammerHead/FX */ #define INTERACT_TYPE_PP8D 1 /* ProPad 8 */ struct interact { struct gameport *gameport; struct input_dev *dev; int bads; int reads; unsigned char type; unsigned char length; char phys[32]; }; 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); local_irq_save(flags); 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; } } local_irq_restore(flags); return i; } /* * interact_poll() reads and analyzes InterAct joystick data. */ static void interact_poll(struct gameport *gameport) { struct interact *interact = gameport_get_drvdata(gameport); 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; } } input_sync(dev); } /* * interact_open() is a callback from the input open routine. */ static int interact_open(struct input_dev *dev) { struct interact *interact = input_get_drvdata(dev); gameport_start_polling(interact->gameport); return 0; } /* * interact_close() is a callback from the input close routine. */ static void interact_close(struct input_dev *dev) { struct interact *interact = input_get_drvdata(dev); gameport_stop_polling(interact->gameport); } /* * interact_connect() probes for InterAct joysticks. */ static int interact_connect(struct gameport *gameport, struct gameport_driver *drv) { struct interact *interact; struct input_dev *input_dev; __u32 data[3]; int i, t; int err; interact = kzalloc(sizeof(struct interact), GFP_KERNEL); input_dev = input_allocate_device(); if (!interact || !input_dev) { err = -ENOMEM; goto fail1; } interact->gameport = gameport; interact->dev = input_dev; gameport_set_drvdata(gameport, interact); err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW); if (err) goto fail1; i = interact_read_packet(gameport, INTERACT_MAX_LENGTH * 2, data); if (i != 32 || (data[0] >> 24) != 0x0c || (data[1] >> 24) != 0x02) { err = -ENODEV; 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 %s. [len %d d0 %08x d1 %08x i2 %08x]\n", gameport->phys, i, data[0], data[1], data[2]); err = -ENODEV; goto fail2; } gameport_set_poll_handler(gameport, interact_poll); gameport_set_poll_interval(gameport, 20); snprintf(interact->phys, sizeof(interact->phys), "%s/input0", gameport->phys); interact->type = i; interact->length = interact_type[i].length; input_dev->name = interact_type[i].name; input_dev->phys = interact->phys; input_dev->id.bustype = BUS_GAMEPORT; input_dev->id.vendor = GAMEPORT_ID_VENDOR_INTERACT; input_dev->id.product = interact_type[i].id; input_dev->id.version = 0x0100; input_dev->dev.parent = &gameport->dev; input_set_drvdata(input_dev, interact); input_dev->open = interact_open; input_dev->close = interact_close; input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); for (i = 0; (t = interact_type[interact->type].abs[i]) >= 0; i++) { set_bit(t, input_dev->absbit); if (i < interact_type[interact->type].b8) { input_dev->absmin[t] = 0; input_dev->absmax[t] = 255; } else { input_dev->absmin[t] = -1; input_dev->absmax[t] = 1; } } for (i = 0; (t = interact_type[interact->type].btn[i]) >= 0; i++) set_bit(t, input_dev->keybit); err = input_register_device(interact->dev); if (err) goto fail2; return 0; fail2: gameport_close(gameport); fail1: gameport_set_drvdata(gameport, NULL); input_free_device(input_dev); kfree(interact); return err; } static void interact_disconnect(struct gameport *gameport) { struct interact *interact = gameport_get_drvdata(gameport); input_unregister_device(interact->dev); gameport_close(gameport); gameport_set_drvdata(gameport, NULL); kfree(interact); } static struct gameport_driver interact_drv = { .driver = { .name = "interact", }, .description = DRIVER_DESC, .connect = interact_connect, .disconnect = interact_disconnect, }; static int __init interact_init(void) { gameport_register_driver(&interact_drv); return 0; } static void __exit interact_exit(void) { gameport_unregister_driver(&interact_drv); } module_init(interact_init); module_exit(interact_exit);