drivers/input/joystick/turbografx.c - pub/scm/linux/kernel/git/atorgue/stm32 - Git at Google

 /*
  *  Copyright (c) 1998-2001 Vojtech Pavlik
  *
  *  Based on the work of:
  *	Steffen Schwenke
  */

 /*
  * TurboGraFX parallel port interface 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/parport.h>
 #include <linux/input.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>

 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
 MODULE_DESCRIPTION("TurboGraFX parallel port interface driver");
 MODULE_LICENSE("GPL");

 #define TGFX_MAX_PORTS		3
 #define TGFX_MAX_DEVICES	7

 struct tgfx_config {
 	int args[TGFX_MAX_DEVICES + 1];
 	unsigned int nargs;
 };

 static struct tgfx_config tgfx_cfg[TGFX_MAX_PORTS];

 module_param_array_named(map, tgfx_cfg[0].args, int, &tgfx_cfg[0].nargs, 0);
 MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<js1>,<js2>,..<js7>");
 module_param_array_named(map2, tgfx_cfg[1].args, int, &tgfx_cfg[1].nargs, 0);
 MODULE_PARM_DESC(map2, "Describes second set of devices");
 module_param_array_named(map3, tgfx_cfg[2].args, int, &tgfx_cfg[2].nargs, 0);
 MODULE_PARM_DESC(map3, "Describes third set of devices");

 #define TGFX_REFRESH_TIME	HZ/100	/* 10 ms */

 #define TGFX_TRIGGER		0x08
 #define TGFX_UP			0x10
 #define TGFX_DOWN		0x20
 #define TGFX_LEFT		0x40
 #define TGFX_RIGHT		0x80

 #define TGFX_THUMB		0x02
 #define TGFX_THUMB2		0x04
 #define TGFX_TOP		0x01
 #define TGFX_TOP2		0x08

 static int tgfx_buttons[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2 };

 static struct tgfx {
 	struct pardevice *pd;
 	struct timer_list timer;
 	struct input_dev *dev[TGFX_MAX_DEVICES];
 	char name[TGFX_MAX_DEVICES][64];
 	char phys[TGFX_MAX_DEVICES][32];
 	int sticks;
 	int used;
 	int parportno;
 	struct mutex sem;
 } *tgfx_base[TGFX_MAX_PORTS];

 /*
  * tgfx_timer() reads and analyzes TurboGraFX joystick data.
  */

 static void tgfx_timer(unsigned long private)
 {
 	struct tgfx *tgfx = (void *) private;
 	struct input_dev *dev;
 	int data1, data2, i;

 	for (i = 0; i < 7; i++)
 		if (tgfx->sticks & (1 << i)) {

 			dev = tgfx->dev[i];

 			parport_write_data(tgfx->pd->port, ~(1 << i));
 			data1 = parport_read_status(tgfx->pd->port) ^ 0x7f;
 			data2 = parport_read_control(tgfx->pd->port) ^ 0x04;	/* CAVEAT parport */

 			input_report_abs(dev, ABS_X, !!(data1 & TGFX_RIGHT) - !!(data1 & TGFX_LEFT));
 			input_report_abs(dev, ABS_Y, !!(data1 & TGFX_DOWN ) - !!(data1 & TGFX_UP  ));

 			input_report_key(dev, BTN_TRIGGER, (data1 & TGFX_TRIGGER));
 			input_report_key(dev, BTN_THUMB,   (data2 & TGFX_THUMB  ));
 			input_report_key(dev, BTN_THUMB2,  (data2 & TGFX_THUMB2 ));
 			input_report_key(dev, BTN_TOP,     (data2 & TGFX_TOP    ));
 			input_report_key(dev, BTN_TOP2,    (data2 & TGFX_TOP2   ));

 			input_sync(dev);
 		}

 	mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
 }

 static int tgfx_open(struct input_dev *dev)
 {
 	struct tgfx *tgfx = input_get_drvdata(dev);
 	int err;

 	err = mutex_lock_interruptible(&tgfx->sem);
 	if (err)
 		return err;

 	if (!tgfx->used++) {
 		parport_claim(tgfx->pd);
 		parport_write_control(tgfx->pd->port, 0x04);
 		mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
 	}

 	mutex_unlock(&tgfx->sem);
 	return 0;
 }

 static void tgfx_close(struct input_dev *dev)
 {
 	struct tgfx *tgfx = input_get_drvdata(dev);

 	mutex_lock(&tgfx->sem);
 	if (!--tgfx->used) {
 		del_timer_sync(&tgfx->timer);
 		parport_write_control(tgfx->pd->port, 0x00);
 		parport_release(tgfx->pd);
 	}
 	mutex_unlock(&tgfx->sem);
 }


 /*
  * tgfx_probe() probes for tg gamepads.
  */

 static void tgfx_attach(struct parport *pp)
 {
 	struct tgfx *tgfx;
 	struct input_dev *input_dev;
 	struct pardevice *pd;
 	int i, j, port_idx;
 	int *n_buttons, n_devs;
 	struct pardev_cb tgfx_parport_cb;

 	for (port_idx = 0; port_idx < TGFX_MAX_PORTS; port_idx++) {
 		if (tgfx_cfg[port_idx].nargs == 0 ||
 		    tgfx_cfg[port_idx].args[0] < 0)
 			continue;
 		if (tgfx_cfg[port_idx].args[0] == pp->number)
 			break;
 	}

 	if (port_idx == TGFX_MAX_PORTS) {
 		pr_debug("Not using parport%d.\n", pp->number);
 		return;
 	}
 	n_buttons = tgfx_cfg[port_idx].args + 1;
 	n_devs = tgfx_cfg[port_idx].nargs - 1;

 	memset(&tgfx_parport_cb, 0, sizeof(tgfx_parport_cb));
 	tgfx_parport_cb.flags = PARPORT_FLAG_EXCL;

 	pd = parport_register_dev_model(pp, "turbografx", &tgfx_parport_cb,
 					port_idx);
 	if (!pd) {
 		pr_err("parport busy already - lp.o loaded?\n");
 		return;
 	}

 	tgfx = kzalloc(sizeof(struct tgfx), GFP_KERNEL);
 	if (!tgfx) {
 		printk(KERN_ERR "turbografx.c: Not enough memory\n");
 		goto err_unreg_pardev;
 	}

 	mutex_init(&tgfx->sem);
 	tgfx->pd = pd;
 	tgfx->parportno = pp->number;
 	init_timer(&tgfx->timer);
 	tgfx->timer.data = (long) tgfx;
 	tgfx->timer.function = tgfx_timer;

 	for (i = 0; i < n_devs; i++) {
 		if (n_buttons[i] < 1)
 			continue;

 		if (n_buttons[i] > ARRAY_SIZE(tgfx_buttons)) {
 			printk(KERN_ERR "turbografx.c: Invalid number of buttons %d\n", n_buttons[i]);
 			goto err_unreg_devs;
 		}

 		tgfx->dev[i] = input_dev = input_allocate_device();
 		if (!input_dev) {
 			printk(KERN_ERR "turbografx.c: Not enough memory for input device\n");
 			goto err_unreg_devs;
 		}

 		tgfx->sticks |= (1 << i);
 		snprintf(tgfx->name[i], sizeof(tgfx->name[i]),
 			 "TurboGraFX %d-button Multisystem joystick", n_buttons[i]);
 		snprintf(tgfx->phys[i], sizeof(tgfx->phys[i]),
 			 "%s/input%d", tgfx->pd->port->name, i);

 		input_dev->name = tgfx->name[i];
 		input_dev->phys = tgfx->phys[i];
 		input_dev->id.bustype = BUS_PARPORT;
 		input_dev->id.vendor = 0x0003;
 		input_dev->id.product = n_buttons[i];
 		input_dev->id.version = 0x0100;

 		input_set_drvdata(input_dev, tgfx);

 		input_dev->open = tgfx_open;
 		input_dev->close = tgfx_close;

 		input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 		input_set_abs_params(input_dev, ABS_X, -1, 1, 0, 0);
 		input_set_abs_params(input_dev, ABS_Y, -1, 1, 0, 0);

 		for (j = 0; j < n_buttons[i]; j++)
 			set_bit(tgfx_buttons[j], input_dev->keybit);

 		if (input_register_device(tgfx->dev[i]))
 			goto err_free_dev;
 	}

         if (!tgfx->sticks) {
 		printk(KERN_ERR "turbografx.c: No valid devices specified\n");
 		goto err_free_tgfx;
         }

 	tgfx_base[port_idx] = tgfx;
 	return;

  err_free_dev:
 	input_free_device(tgfx->dev[i]);
  err_unreg_devs:
 	while (--i >= 0)
 		if (tgfx->dev[i])
 			input_unregister_device(tgfx->dev[i]);
  err_free_tgfx:
 	kfree(tgfx);
  err_unreg_pardev:
 	parport_unregister_device(pd);
 }

 static void tgfx_detach(struct parport *port)
 {
 	int i;
 	struct tgfx *tgfx;

 	for (i = 0; i < TGFX_MAX_PORTS; i++) {
 		if (tgfx_base[i] && tgfx_base[i]->parportno == port->number)
 			break;
 	}

 	if (i == TGFX_MAX_PORTS)
 		return;

 	tgfx = tgfx_base[i];
 	tgfx_base[i] = NULL;

 	for (i = 0; i < TGFX_MAX_DEVICES; i++)
 		if (tgfx->dev[i])
 			input_unregister_device(tgfx->dev[i]);
 	parport_unregister_device(tgfx->pd);
 	kfree(tgfx);
 }

 static struct parport_driver tgfx_parport_driver = {
 	.name = "turbografx",
 	.match_port = tgfx_attach,
 	.detach = tgfx_detach,
 	.devmodel = true,
 };

 static int __init tgfx_init(void)
 {
 	int i;
 	int have_dev = 0;

 	for (i = 0; i < TGFX_MAX_PORTS; i++) {
 		if (tgfx_cfg[i].nargs == 0 || tgfx_cfg[i].args[0] < 0)
 			continue;

 		if (tgfx_cfg[i].nargs < 2) {
 			printk(KERN_ERR "turbografx.c: at least one joystick must be specified\n");
 			return -EINVAL;
 		}

 		have_dev = 1;
 	}

 	if (!have_dev)
 		return -ENODEV;

 	return parport_register_driver(&tgfx_parport_driver);
 }

 static void __exit tgfx_exit(void)
 {
 	parport_unregister_driver(&tgfx_parport_driver);
 }

 module_init(tgfx_init);
 module_exit(tgfx_exit);
	/*
	* Copyright (c) 1998-2001 Vojtech Pavlik
	*
	* Based on the work of:
	* Steffen Schwenke
	*/

	/*
	* TurboGraFX parallel port interface 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/parport.h>
	#include <linux/input.h>
	#include <linux/module.h>
	#include <linux/init.h>
	#include <linux/mutex.h>
	#include <linux/slab.h>

	MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
	MODULE_DESCRIPTION("TurboGraFX parallel port interface driver");
	MODULE_LICENSE("GPL");

	#define TGFX_MAX_PORTS 3
	#define TGFX_MAX_DEVICES 7

	struct tgfx_config {
	int args[TGFX_MAX_DEVICES + 1];
	unsigned int nargs;
	};

	static struct tgfx_config tgfx_cfg[TGFX_MAX_PORTS];

	module_param_array_named(map, tgfx_cfg[0].args, int, &tgfx_cfg[0].nargs, 0);
	MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<js1>,<js2>,..<js7>");
	module_param_array_named(map2, tgfx_cfg[1].args, int, &tgfx_cfg[1].nargs, 0);
	MODULE_PARM_DESC(map2, "Describes second set of devices");
	module_param_array_named(map3, tgfx_cfg[2].args, int, &tgfx_cfg[2].nargs, 0);
	MODULE_PARM_DESC(map3, "Describes third set of devices");

	#define TGFX_REFRESH_TIME HZ/100 /* 10 ms */

	#define TGFX_TRIGGER 0x08
	#define TGFX_UP 0x10
	#define TGFX_DOWN 0x20
	#define TGFX_LEFT 0x40
	#define TGFX_RIGHT 0x80

	#define TGFX_THUMB 0x02
	#define TGFX_THUMB2 0x04
	#define TGFX_TOP 0x01
	#define TGFX_TOP2 0x08

	static int tgfx_buttons[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2 };

	static struct tgfx {
	struct pardevice *pd;
	struct timer_list timer;
	struct input_dev *dev[TGFX_MAX_DEVICES];
	char name[TGFX_MAX_DEVICES][64];
	char phys[TGFX_MAX_DEVICES][32];
	int sticks;
	int used;
	int parportno;
	struct mutex sem;
	} *tgfx_base[TGFX_MAX_PORTS];

	/*
	* tgfx_timer() reads and analyzes TurboGraFX joystick data.
	*/

	static void tgfx_timer(unsigned long private)
	{
	struct tgfx tgfx = (void ) private;
	struct input_dev *dev;
	int data1, data2, i;

	for (i = 0; i < 7; i++)
	if (tgfx->sticks & (1 << i)) {

	dev = tgfx->dev[i];

	parport_write_data(tgfx->pd->port, ~(1 << i));
	data1 = parport_read_status(tgfx->pd->port) ^ 0x7f;
	data2 = parport_read_control(tgfx->pd->port) ^ 0x04; /* CAVEAT parport */

	input_report_abs(dev, ABS_X, !!(data1 & TGFX_RIGHT) - !!(data1 & TGFX_LEFT));
	input_report_abs(dev, ABS_Y, !!(data1 & TGFX_DOWN ) - !!(data1 & TGFX_UP ));

	input_report_key(dev, BTN_TRIGGER, (data1 & TGFX_TRIGGER));
	input_report_key(dev, BTN_THUMB, (data2 & TGFX_THUMB ));
	input_report_key(dev, BTN_THUMB2, (data2 & TGFX_THUMB2 ));
	input_report_key(dev, BTN_TOP, (data2 & TGFX_TOP ));
	input_report_key(dev, BTN_TOP2, (data2 & TGFX_TOP2 ));

	input_sync(dev);
	}

	mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
	}

	static int tgfx_open(struct input_dev *dev)
	{
	struct tgfx *tgfx = input_get_drvdata(dev);
	int err;

	err = mutex_lock_interruptible(&tgfx->sem);
	if (err)
	return err;

	if (!tgfx->used++) {
	parport_claim(tgfx->pd);
	parport_write_control(tgfx->pd->port, 0x04);
	mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
	}

	mutex_unlock(&tgfx->sem);
	return 0;
	}

	static void tgfx_close(struct input_dev *dev)
	{
	struct tgfx *tgfx = input_get_drvdata(dev);

	mutex_lock(&tgfx->sem);
	if (!--tgfx->used) {
	del_timer_sync(&tgfx->timer);
	parport_write_control(tgfx->pd->port, 0x00);
	parport_release(tgfx->pd);
	}
	mutex_unlock(&tgfx->sem);
	}



	/*
	* tgfx_probe() probes for tg gamepads.
	*/

	static void tgfx_attach(struct parport *pp)
	{
	struct tgfx *tgfx;
	struct input_dev *input_dev;
	struct pardevice *pd;
	int i, j, port_idx;
	int *n_buttons, n_devs;
	struct pardev_cb tgfx_parport_cb;

	for (port_idx = 0; port_idx < TGFX_MAX_PORTS; port_idx++) {
	if (tgfx_cfg[port_idx].nargs == 0 \|\|
	tgfx_cfg[port_idx].args[0] < 0)
	continue;
	if (tgfx_cfg[port_idx].args[0] == pp->number)
	break;
	}

	if (port_idx == TGFX_MAX_PORTS) {
	pr_debug("Not using parport%d.\n", pp->number);
	return;
	}
	n_buttons = tgfx_cfg[port_idx].args + 1;
	n_devs = tgfx_cfg[port_idx].nargs - 1;

	memset(&tgfx_parport_cb, 0, sizeof(tgfx_parport_cb));
	tgfx_parport_cb.flags = PARPORT_FLAG_EXCL;

	pd = parport_register_dev_model(pp, "turbografx", &tgfx_parport_cb,
	port_idx);
	if (!pd) {
	pr_err("parport busy already - lp.o loaded?\n");
	return;
	}

	tgfx = kzalloc(sizeof(struct tgfx), GFP_KERNEL);
	if (!tgfx) {
	printk(KERN_ERR "turbografx.c: Not enough memory\n");
	goto err_unreg_pardev;
	}

	mutex_init(&tgfx->sem);
	tgfx->pd = pd;
	tgfx->parportno = pp->number;
	init_timer(&tgfx->timer);
	tgfx->timer.data = (long) tgfx;
	tgfx->timer.function = tgfx_timer;

	for (i = 0; i < n_devs; i++) {
	if (n_buttons[i] < 1)
	continue;

	if (n_buttons[i] > ARRAY_SIZE(tgfx_buttons)) {
	printk(KERN_ERR "turbografx.c: Invalid number of buttons %d\n", n_buttons[i]);
	goto err_unreg_devs;
	}

	tgfx->dev[i] = input_dev = input_allocate_device();
	if (!input_dev) {
	printk(KERN_ERR "turbografx.c: Not enough memory for input device\n");
	goto err_unreg_devs;
	}

	tgfx->sticks \|= (1 << i);
	snprintf(tgfx->name[i], sizeof(tgfx->name[i]),
	"TurboGraFX %d-button Multisystem joystick", n_buttons[i]);
	snprintf(tgfx->phys[i], sizeof(tgfx->phys[i]),
	"%s/input%d", tgfx->pd->port->name, i);

	input_dev->name = tgfx->name[i];
	input_dev->phys = tgfx->phys[i];
	input_dev->id.bustype = BUS_PARPORT;
	input_dev->id.vendor = 0x0003;
	input_dev->id.product = n_buttons[i];
	input_dev->id.version = 0x0100;

	input_set_drvdata(input_dev, tgfx);

	input_dev->open = tgfx_open;
	input_dev->close = tgfx_close;

	input_dev->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_ABS);
	input_set_abs_params(input_dev, ABS_X, -1, 1, 0, 0);
	input_set_abs_params(input_dev, ABS_Y, -1, 1, 0, 0);

	for (j = 0; j < n_buttons[i]; j++)
	set_bit(tgfx_buttons[j], input_dev->keybit);

	if (input_register_device(tgfx->dev[i]))
	goto err_free_dev;
	}

	if (!tgfx->sticks) {
	printk(KERN_ERR "turbografx.c: No valid devices specified\n");
	goto err_free_tgfx;
	}

	tgfx_base[port_idx] = tgfx;
	return;

	err_free_dev:
	input_free_device(tgfx->dev[i]);
	err_unreg_devs:
	while (--i >= 0)
	if (tgfx->dev[i])
	input_unregister_device(tgfx->dev[i]);
	err_free_tgfx:
	kfree(tgfx);
	err_unreg_pardev:
	parport_unregister_device(pd);
	}

	static void tgfx_detach(struct parport *port)
	{
	int i;
	struct tgfx *tgfx;

	for (i = 0; i < TGFX_MAX_PORTS; i++) {
	if (tgfx_base[i] && tgfx_base[i]->parportno == port->number)
	break;
	}

	if (i == TGFX_MAX_PORTS)
	return;

	tgfx = tgfx_base[i];
	tgfx_base[i] = NULL;

	for (i = 0; i < TGFX_MAX_DEVICES; i++)
	if (tgfx->dev[i])
	input_unregister_device(tgfx->dev[i]);
	parport_unregister_device(tgfx->pd);
	kfree(tgfx);
	}

	static struct parport_driver tgfx_parport_driver = {
	.name = "turbografx",
	.match_port = tgfx_attach,
	.detach = tgfx_detach,
	.devmodel = true,
	};

	static int __init tgfx_init(void)
	{
	int i;
	int have_dev = 0;

	for (i = 0; i < TGFX_MAX_PORTS; i++) {
	if (tgfx_cfg[i].nargs == 0 \|\| tgfx_cfg[i].args[0] < 0)
	continue;

	if (tgfx_cfg[i].nargs < 2) {
	printk(KERN_ERR "turbografx.c: at least one joystick must be specified\n");
	return -EINVAL;
	}

	have_dev = 1;
	}

	if (!have_dev)
	return -ENODEV;

	return parport_register_driver(&tgfx_parport_driver);
	}

	static void __exit tgfx_exit(void)
	{
	parport_unregister_driver(&tgfx_parport_driver);
	}

	module_init(tgfx_init);
	module_exit(tgfx_exit);