drivers/input/joystick/interact.c - linux - Git at Google

 /*
  * $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);
	/*
	* $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);