/* *  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_MASK(EV_KEY) | BIT_MASK(EV_ABS); 	for (i = 0; (t = interact_type[interact->type].abs[i]) >= 0; i++) {		if (i < interact_type[interact->type].b8)			input_set_abs_params(input_dev, t, 0, 255, 0, 0);		else			input_set_abs_params(input_dev, t, -1, 1, 0, 0);	} 	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,}; module_gameport_driver(interact_drv);