drivers/input/joystick/iforce/iforce-usb.c - maze/linux - Git at Google

  /*
  * $Id: iforce-usb.c,v 1.16 2002/06/09 11:08:04 jdeneux Exp $
  *
  *  Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
  *  Copyright (c) 2001-2002 Johann Deneux <deneux@ifrance.com>
  *
  *  USB/RS232 I-Force joysticks and wheels.
  */

 /*
  * 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 "iforce.h"

 void iforce_usb_xmit(struct iforce *iforce)
 {
 	int n, c;
 	unsigned long flags;

 	spin_lock_irqsave(&iforce->xmit_lock, flags);

 	if (iforce->xmit.head == iforce->xmit.tail) {
 		clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
 		spin_unlock_irqrestore(&iforce->xmit_lock, flags);
 		return;
 	}

 	((char *)iforce->out->transfer_buffer)[0] = iforce->xmit.buf[iforce->xmit.tail];
 	XMIT_INC(iforce->xmit.tail, 1);
 	n = iforce->xmit.buf[iforce->xmit.tail];
 	XMIT_INC(iforce->xmit.tail, 1);

 	iforce->out->transfer_buffer_length = n + 1;
 	iforce->out->dev = iforce->usbdev;

 	/* Copy rest of data then */
 	c = CIRC_CNT_TO_END(iforce->xmit.head, iforce->xmit.tail, XMIT_SIZE);
 	if (n < c) c=n;

 	memcpy(iforce->out->transfer_buffer + 1,
 	       &iforce->xmit.buf[iforce->xmit.tail],
 	       c);
 	if (n != c) {
 		memcpy(iforce->out->transfer_buffer + 1 + c,
 		       &iforce->xmit.buf[0],
 		       n-c);
 	}
 	XMIT_INC(iforce->xmit.tail, n);

 	if ( (n=usb_submit_urb(iforce->out, GFP_ATOMIC)) ) {
 		printk(KERN_WARNING "iforce-usb.c: iforce_usb_xmit: usb_submit_urb failed %d\n", n);
 	}

 	/* The IFORCE_XMIT_RUNNING bit is not cleared here. That's intended.
 	 * As long as the urb completion handler is not called, the transmiting
 	 * is considered to be running */
 	spin_unlock_irqrestore(&iforce->xmit_lock, flags);
 }

 static void iforce_usb_irq(struct urb *urb, struct pt_regs *regs)
 {
 	struct iforce *iforce = urb->context;
 	int status;

 	switch (urb->status) {
 	case 0:
 		/* success */
 		break;
 	case -ECONNRESET:
 	case -ENOENT:
 	case -ESHUTDOWN:
 		/* this urb is terminated, clean up */
 		dbg("%s - urb shutting down with status: %d",
 		    __FUNCTION__, urb->status);
 		return;
 	default:
 		dbg("%s - urb has status of: %d", __FUNCTION__, urb->status);
 		goto exit;
 	}

 	wake_up(&iforce->wait);
 	iforce_process_packet(iforce,
 		(iforce->data[0] << 8) | (urb->actual_length - 1), iforce->data + 1, regs);

 exit:
 	status = usb_submit_urb (urb, GFP_ATOMIC);
 	if (status)
 		err ("%s - usb_submit_urb failed with result %d",
 		     __FUNCTION__, status);
 }

 static void iforce_usb_out(struct urb *urb, struct pt_regs *regs)
 {
 	struct iforce *iforce = urb->context;

 	if (urb->status) {
 		printk(KERN_DEBUG "iforce_usb_out: urb->status %d, exiting", urb->status);
 		return;
 	}

 	iforce_usb_xmit(iforce);

 	wake_up(&iforce->wait);
 }

 static void iforce_usb_ctrl(struct urb *urb, struct pt_regs *regs)
 {
 	struct iforce *iforce = urb->context;
 	if (urb->status) return;
 	iforce->ecmd = 0xff00 | urb->actual_length;
 	wake_up(&iforce->wait);
 }

 static int iforce_usb_probe(struct usb_interface *intf,
 				const struct usb_device_id *id)
 {
 	struct usb_device *dev = interface_to_usbdev(intf);
 	struct usb_host_interface *interface;
 	struct usb_endpoint_descriptor *epirq, *epout;
 	struct iforce *iforce;
 	int err = -ENOMEM;

 	interface = intf->cur_altsetting;

 	epirq = &interface->endpoint[0].desc;
 	epout = &interface->endpoint[1].desc;

 	if (!(iforce = kzalloc(sizeof(struct iforce) + 32, GFP_KERNEL)))
 		goto fail;

 	if (!(iforce->irq = usb_alloc_urb(0, GFP_KERNEL)))
 		goto fail;

 	if (!(iforce->out = usb_alloc_urb(0, GFP_KERNEL)))
 		goto fail;

 	if (!(iforce->ctrl = usb_alloc_urb(0, GFP_KERNEL)))
 		goto fail;

 	iforce->bus = IFORCE_USB;
 	iforce->usbdev = dev;

 	iforce->cr.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_INTERFACE;
 	iforce->cr.wIndex = 0;
 	iforce->cr.wLength = 16;

 	usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress),
 			iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval);

 	usb_fill_bulk_urb(iforce->out, dev, usb_sndbulkpipe(dev, epout->bEndpointAddress),
 			iforce + 1, 32, iforce_usb_out, iforce);

 	usb_fill_control_urb(iforce->ctrl, dev, usb_rcvctrlpipe(dev, 0),
 			(void*) &iforce->cr, iforce->edata, 16, iforce_usb_ctrl, iforce);

 	err = iforce_init_device(iforce);
 	if (err)
 		goto fail;

 	usb_set_intfdata(intf, iforce);
 	return 0;

 fail:
 	if (iforce) {
 		if (iforce->irq) usb_free_urb(iforce->irq);
 		if (iforce->out) usb_free_urb(iforce->out);
 		if (iforce->ctrl) usb_free_urb(iforce->ctrl);
 		kfree(iforce);
 	}

 	return err;
 }

 /* Called by iforce_delete() */
 void iforce_usb_delete(struct iforce* iforce)
 {
 	usb_unlink_urb(iforce->irq);
 /* Is it ok to unlink those ? */
 	usb_unlink_urb(iforce->out);
 	usb_unlink_urb(iforce->ctrl);

 	usb_free_urb(iforce->irq);
 	usb_free_urb(iforce->out);
 	usb_free_urb(iforce->ctrl);
 }

 static void iforce_usb_disconnect(struct usb_interface *intf)
 {
 	struct iforce *iforce = usb_get_intfdata(intf);
 	int open = 0; /* FIXME! iforce->dev.handle->open; */

 	usb_set_intfdata(intf, NULL);
 	if (iforce) {
 		iforce->usbdev = NULL;
 		input_unregister_device(iforce->dev);

 		if (!open) {
 			iforce_delete_device(iforce);
 			kfree(iforce);
 		}
 	}
 }

 static struct usb_device_id iforce_usb_ids [] = {
 	{ USB_DEVICE(0x044f, 0xa01c) },		/* Thrustmaster Motor Sport GT */
 	{ USB_DEVICE(0x046d, 0xc281) },		/* Logitech WingMan Force */
 	{ USB_DEVICE(0x046d, 0xc291) },		/* Logitech WingMan Formula Force */
 	{ USB_DEVICE(0x05ef, 0x020a) },		/* AVB Top Shot Pegasus */
 	{ USB_DEVICE(0x05ef, 0x8884) },		/* AVB Mag Turbo Force */
 	{ USB_DEVICE(0x05ef, 0x8888) },		/* AVB Top Shot FFB Racing Wheel */
 	{ USB_DEVICE(0x061c, 0xc0a4) },         /* ACT LABS Force RS */
 	{ USB_DEVICE(0x06f8, 0x0001) },		/* Guillemot Race Leader Force Feedback */
 	{ USB_DEVICE(0x06f8, 0x0004) },		/* Guillemot Force Feedback Racing Wheel */
 	{ USB_DEVICE(0x06f8, 0xa302) },		/* Guillemot Jet Leader 3D */
 	{ }					/* Terminating entry */
 };

 MODULE_DEVICE_TABLE (usb, iforce_usb_ids);

 struct usb_driver iforce_usb_driver = {
 	.owner =	THIS_MODULE,
 	.name =		"iforce",
 	.probe =	iforce_usb_probe,
 	.disconnect =	iforce_usb_disconnect,
 	.id_table =	iforce_usb_ids,
 };
	/*
	* $Id: iforce-usb.c,v 1.16 2002/06/09 11:08:04 jdeneux Exp $
	*
	* Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
	* Copyright (c) 2001-2002 Johann Deneux <deneux@ifrance.com>
	*
	* USB/RS232 I-Force joysticks and wheels.
	*/

	/*
	* 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 "iforce.h"

	void iforce_usb_xmit(struct iforce *iforce)
	{
	int n, c;
	unsigned long flags;

	spin_lock_irqsave(&iforce->xmit_lock, flags);

	if (iforce->xmit.head == iforce->xmit.tail) {
	clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
	spin_unlock_irqrestore(&iforce->xmit_lock, flags);
	return;
	}

	((char *)iforce->out->transfer_buffer)[0] = iforce->xmit.buf[iforce->xmit.tail];
	XMIT_INC(iforce->xmit.tail, 1);
	n = iforce->xmit.buf[iforce->xmit.tail];
	XMIT_INC(iforce->xmit.tail, 1);

	iforce->out->transfer_buffer_length = n + 1;
	iforce->out->dev = iforce->usbdev;

	/* Copy rest of data then */
	c = CIRC_CNT_TO_END(iforce->xmit.head, iforce->xmit.tail, XMIT_SIZE);
	if (n < c) c=n;

	memcpy(iforce->out->transfer_buffer + 1,
	&iforce->xmit.buf[iforce->xmit.tail],
	c);
	if (n != c) {
	memcpy(iforce->out->transfer_buffer + 1 + c,
	&iforce->xmit.buf[0],
	n-c);
	}
	XMIT_INC(iforce->xmit.tail, n);

	if ( (n=usb_submit_urb(iforce->out, GFP_ATOMIC)) ) {
	printk(KERN_WARNING "iforce-usb.c: iforce_usb_xmit: usb_submit_urb failed %d\n", n);
	}

	/* The IFORCE_XMIT_RUNNING bit is not cleared here. That's intended.
	* As long as the urb completion handler is not called, the transmiting
	* is considered to be running */
	spin_unlock_irqrestore(&iforce->xmit_lock, flags);
	}

	static void iforce_usb_irq(struct urb urb, struct pt_regs regs)
	{
	struct iforce *iforce = urb->context;
	int status;

	switch (urb->status) {
	case 0:
	/* success */
	break;
	case -ECONNRESET:
	case -ENOENT:
	case -ESHUTDOWN:
	/* this urb is terminated, clean up */
	dbg("%s - urb shutting down with status: %d",
	__FUNCTION__, urb->status);
	return;
	default:
	dbg("%s - urb has status of: %d", __FUNCTION__, urb->status);
	goto exit;
	}

	wake_up(&iforce->wait);
	iforce_process_packet(iforce,
	(iforce->data[0] << 8) \| (urb->actual_length - 1), iforce->data + 1, regs);

	exit:
	status = usb_submit_urb (urb, GFP_ATOMIC);
	if (status)
	err ("%s - usb_submit_urb failed with result %d",
	__FUNCTION__, status);
	}

	static void iforce_usb_out(struct urb urb, struct pt_regs regs)
	{
	struct iforce *iforce = urb->context;

	if (urb->status) {
	printk(KERN_DEBUG "iforce_usb_out: urb->status %d, exiting", urb->status);
	return;
	}

	iforce_usb_xmit(iforce);

	wake_up(&iforce->wait);
	}

	static void iforce_usb_ctrl(struct urb urb, struct pt_regs regs)
	{
	struct iforce *iforce = urb->context;
	if (urb->status) return;
	iforce->ecmd = 0xff00 \| urb->actual_length;
	wake_up(&iforce->wait);
	}

	static int iforce_usb_probe(struct usb_interface *intf,
	const struct usb_device_id *id)
	{
	struct usb_device *dev = interface_to_usbdev(intf);
	struct usb_host_interface *interface;
	struct usb_endpoint_descriptor epirq, epout;
	struct iforce *iforce;
	int err = -ENOMEM;

	interface = intf->cur_altsetting;

	epirq = &interface->endpoint[0].desc;
	epout = &interface->endpoint[1].desc;

	if (!(iforce = kzalloc(sizeof(struct iforce) + 32, GFP_KERNEL)))
	goto fail;

	if (!(iforce->irq = usb_alloc_urb(0, GFP_KERNEL)))
	goto fail;

	if (!(iforce->out = usb_alloc_urb(0, GFP_KERNEL)))
	goto fail;

	if (!(iforce->ctrl = usb_alloc_urb(0, GFP_KERNEL)))
	goto fail;

	iforce->bus = IFORCE_USB;
	iforce->usbdev = dev;

	iforce->cr.bRequestType = USB_TYPE_VENDOR \| USB_DIR_IN \| USB_RECIP_INTERFACE;
	iforce->cr.wIndex = 0;
	iforce->cr.wLength = 16;

	usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress),
	iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval);

	usb_fill_bulk_urb(iforce->out, dev, usb_sndbulkpipe(dev, epout->bEndpointAddress),
	iforce + 1, 32, iforce_usb_out, iforce);

	usb_fill_control_urb(iforce->ctrl, dev, usb_rcvctrlpipe(dev, 0),
	(void*) &iforce->cr, iforce->edata, 16, iforce_usb_ctrl, iforce);

	err = iforce_init_device(iforce);
	if (err)
	goto fail;

	usb_set_intfdata(intf, iforce);
	return 0;

	fail:
	if (iforce) {
	if (iforce->irq) usb_free_urb(iforce->irq);
	if (iforce->out) usb_free_urb(iforce->out);
	if (iforce->ctrl) usb_free_urb(iforce->ctrl);
	kfree(iforce);
	}

	return err;
	}

	/* Called by iforce_delete() */
	void iforce_usb_delete(struct iforce* iforce)
	{
	usb_unlink_urb(iforce->irq);
	/* Is it ok to unlink those ? */
	usb_unlink_urb(iforce->out);
	usb_unlink_urb(iforce->ctrl);

	usb_free_urb(iforce->irq);
	usb_free_urb(iforce->out);
	usb_free_urb(iforce->ctrl);
	}

	static void iforce_usb_disconnect(struct usb_interface *intf)
	{
	struct iforce *iforce = usb_get_intfdata(intf);
	int open = 0; /* FIXME! iforce->dev.handle->open; */

	usb_set_intfdata(intf, NULL);
	if (iforce) {
	iforce->usbdev = NULL;
	input_unregister_device(iforce->dev);

	if (!open) {
	iforce_delete_device(iforce);
	kfree(iforce);
	}
	}
	}

	static struct usb_device_id iforce_usb_ids [] = {
	{ USB_DEVICE(0x044f, 0xa01c) }, /* Thrustmaster Motor Sport GT */
	{ USB_DEVICE(0x046d, 0xc281) }, /* Logitech WingMan Force */
	{ USB_DEVICE(0x046d, 0xc291) }, /* Logitech WingMan Formula Force */
	{ USB_DEVICE(0x05ef, 0x020a) }, /* AVB Top Shot Pegasus */
	{ USB_DEVICE(0x05ef, 0x8884) }, /* AVB Mag Turbo Force */
	{ USB_DEVICE(0x05ef, 0x8888) }, /* AVB Top Shot FFB Racing Wheel */
	{ USB_DEVICE(0x061c, 0xc0a4) }, /* ACT LABS Force RS */
	{ USB_DEVICE(0x06f8, 0x0001) }, /* Guillemot Race Leader Force Feedback */
	{ USB_DEVICE(0x06f8, 0x0004) }, /* Guillemot Force Feedback Racing Wheel */
	{ USB_DEVICE(0x06f8, 0xa302) }, /* Guillemot Jet Leader 3D */
	{ } /* Terminating entry */
	};

	MODULE_DEVICE_TABLE (usb, iforce_usb_ids);

	struct usb_driver iforce_usb_driver = {
	.owner = THIS_MODULE,
	.name = "iforce",
	.probe = iforce_usb_probe,
	.disconnect = iforce_usb_disconnect,
	.id_table = iforce_usb_ids,
	};