| /* |
| * $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> |
| |
| #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 = dev->private; |
| |
| 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 = dev->private; |
| |
| 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; |
| __u32 data[3]; |
| int i, t; |
| int err; |
| |
| if (!(interact = kzalloc(sizeof(struct interact), GFP_KERNEL))) |
| return -ENOMEM; |
| |
| interact->gameport = gameport; |
| |
| 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); |
| |
| sprintf(interact->phys, "%s/input0", gameport->phys); |
| |
| 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.phys = interact->phys; |
| interact->dev.id.bustype = BUS_GAMEPORT; |
| interact->dev.id.vendor = GAMEPORT_ID_VENDOR_INTERACT; |
| interact->dev.id.product = interact_type[i].id; |
| interact->dev.id.version = 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: %s on %s\n", |
| interact_type[interact->type].name, gameport->phys); |
| |
| return 0; |
| |
| fail2: gameport_close(gameport); |
| fail1: gameport_set_drvdata(gameport, NULL); |
| 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); |