drivers/input/joystick/iforce/iforce-usb.c

   1  /*
   2  * $Id: iforce-usb.c,v 1.16 2002/06/09 11:08:04 jdeneux Exp $
   3  *
   4  *  Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
   5  *  Copyright (c) 2001-2002 Johann Deneux <deneux@ifrance.com>
   6  *
   7  *  USB/RS232 I-Force joysticks and wheels.
   8  */
   9
  10 /*
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  24  *
  25  * Should you need to contact me, the author, you can do so either by
  26  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  27  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  28  */
  29
  30 #include "iforce.h"
  31
  32 void iforce_usb_xmit(struct iforce *iforce)
  33 {
  34         int n, c;
  35         unsigned long flags;
  36
  37         spin_lock_irqsave(&iforce->xmit_lock, flags);
  38
  39         if (iforce->xmit.head == iforce->xmit.tail) {
  40                 clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
  41                 spin_unlock_irqrestore(&iforce->xmit_lock, flags);
  42                 return;
  43         }
  44
  45         ((char *)iforce->out->transfer_buffer)[0] = iforce->xmit.buf[iforce->xmit.tail];
  46         XMIT_INC(iforce->xmit.tail, 1);
  47         n = iforce->xmit.buf[iforce->xmit.tail];
  48         XMIT_INC(iforce->xmit.tail, 1);
  49
  50         iforce->out->transfer_buffer_length = n + 1;
  51         iforce->out->dev = iforce->usbdev;
  52
  53         /* Copy rest of data then */
  54         c = CIRC_CNT_TO_END(iforce->xmit.head, iforce->xmit.tail, XMIT_SIZE);
  55         if (n < c) c=n;
  56
  57         memcpy(iforce->out->transfer_buffer + 1,
  58                &iforce->xmit.buf[iforce->xmit.tail],
  59                c);
  60         if (n != c) {
  61                 memcpy(iforce->out->transfer_buffer + 1 + c,
  62                        &iforce->xmit.buf[0],
  63                        n-c);
  64         }
  65         XMIT_INC(iforce->xmit.tail, n);
  66
  67         if ( (n=usb_submit_urb(iforce->out, GFP_ATOMIC)) ) {
  68                 printk(KERN_WARNING "iforce-usb.c: iforce_usb_xmit: usb_submit_urb failed %d\n", n);
  69         }
  70
  71         /* The IFORCE_XMIT_RUNNING bit is not cleared here. That's intended.
  72          * As long as the urb completion handler is not called, the transmiting
  73          * is considered to be running */
  74         spin_unlock_irqrestore(&iforce->xmit_lock, flags);
  75 }
  76
  77 static void iforce_usb_irq(struct urb *urb, struct pt_regs *regs)
  78 {
  79         struct iforce *iforce = urb->context;
  80         int status;
  81
  82         switch (urb->status) {
  83         case 0:
  84                 /* success */
  85                 break;
  86         case -ECONNRESET:
  87         case -ENOENT:
  88         case -ESHUTDOWN:
  89                 /* this urb is terminated, clean up */
  90                 dbg("%s - urb shutting down with status: %d",
  91                     __FUNCTION__, urb->status);
  92                 return;
  93         default:
  94                 dbg("%s - urb has status of: %d", __FUNCTION__, urb->status);
  95                 goto exit;
  96         }
  97
  98         wake_up(&iforce->wait);
  99         iforce_process_packet(iforce,
 100                 (iforce->data[0] << 8) | (urb->actual_length - 1), iforce->data + 1, regs);
 101
 102 exit:
 103         status = usb_submit_urb (urb, GFP_ATOMIC);
 104         if (status)
 105                 err ("%s - usb_submit_urb failed with result %d",
 106                      __FUNCTION__, status);
 107 }
 108
 109 static void iforce_usb_out(struct urb *urb, struct pt_regs *regs)
 110 {
 111         struct iforce *iforce = urb->context;
 112
 113         if (urb->status) {
 114                 printk(KERN_DEBUG "iforce_usb_out: urb->status %d, exiting", urb->status);
 115                 return;
 116         }
 117
 118         iforce_usb_xmit(iforce);
 119
 120         wake_up(&iforce->wait);
 121 }
 122
 123 static void iforce_usb_ctrl(struct urb *urb, struct pt_regs *regs)
 124 {
 125         struct iforce *iforce = urb->context;
 126         if (urb->status) return;
 127         iforce->ecmd = 0xff00 | urb->actual_length;
 128         wake_up(&iforce->wait);
 129 }
 130
 131 static int iforce_usb_probe(struct usb_interface *intf,
 132                                 const struct usb_device_id *id)
 133 {
 134         struct usb_device *dev = interface_to_usbdev(intf);
 135         struct usb_host_interface *interface;
 136         struct usb_endpoint_descriptor *epirq, *epout;
 137         struct iforce *iforce;
 138         int err = -ENOMEM;
 139
 140         interface = intf->cur_altsetting;
 141
 142         epirq = &interface->endpoint[0].desc;
 143         epout = &interface->endpoint[1].desc;
 144
 145         if (!(iforce = kzalloc(sizeof(struct iforce) + 32, GFP_KERNEL)))
 146                 goto fail;
 147
 148         if (!(iforce->irq = usb_alloc_urb(0, GFP_KERNEL)))
 149                 goto fail;
 150
 151         if (!(iforce->out = usb_alloc_urb(0, GFP_KERNEL)))
 152                 goto fail;
 153
 154         if (!(iforce->ctrl = usb_alloc_urb(0, GFP_KERNEL)))
 155                 goto fail;
 156
 157         iforce->bus = IFORCE_USB;
 158         iforce->usbdev = dev;
 159
 160         iforce->cr.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_INTERFACE;
 161         iforce->cr.wIndex = 0;
 162         iforce->cr.wLength = 16;
 163
 164         usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress),
 165                         iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval);
 166
 167         usb_fill_bulk_urb(iforce->out, dev, usb_sndbulkpipe(dev, epout->bEndpointAddress),
 168                         iforce + 1, 32, iforce_usb_out, iforce);
 169
 170         usb_fill_control_urb(iforce->ctrl, dev, usb_rcvctrlpipe(dev, 0),
 171                         (void*) &iforce->cr, iforce->edata, 16, iforce_usb_ctrl, iforce);
 172
 173         err = iforce_init_device(iforce);
 174         if (err)
 175                 goto fail;
 176
 177         usb_set_intfdata(intf, iforce);
 178         return 0;
 179
 180 fail:
 181         if (iforce) {
 182                 if (iforce->irq) usb_free_urb(iforce->irq);
 183                 if (iforce->out) usb_free_urb(iforce->out);
 184                 if (iforce->ctrl) usb_free_urb(iforce->ctrl);
 185                 kfree(iforce);
 186         }
 187
 188         return err;
 189 }
 190
 191 /* Called by iforce_delete() */
 192 void iforce_usb_delete(struct iforce* iforce)
 193 {
 194         usb_unlink_urb(iforce->irq);
 195 /* Is it ok to unlink those ? */
 196         usb_unlink_urb(iforce->out);
 197         usb_unlink_urb(iforce->ctrl);
 198
 199         usb_free_urb(iforce->irq);
 200         usb_free_urb(iforce->out);
 201         usb_free_urb(iforce->ctrl);
 202 }
 203
 204 static void iforce_usb_disconnect(struct usb_interface *intf)
 205 {
 206         struct iforce *iforce = usb_get_intfdata(intf);
 207         int open = 0; /* FIXME! iforce->dev.handle->open; */
 208
 209         usb_set_intfdata(intf, NULL);
 210         if (iforce) {
 211                 iforce->usbdev = NULL;
 212                 input_unregister_device(iforce->dev);
 213
 214                 if (!open) {
 215                         iforce_delete_device(iforce);
 216                         kfree(iforce);
 217                 }
 218         }
 219 }
 220
 221 static struct usb_device_id iforce_usb_ids [] = {
 222         { USB_DEVICE(0x044f, 0xa01c) },         /* Thrustmaster Motor Sport GT */
 223         { USB_DEVICE(0x046d, 0xc281) },         /* Logitech WingMan Force */
 224         { USB_DEVICE(0x046d, 0xc291) },         /* Logitech WingMan Formula Force */
 225         { USB_DEVICE(0x05ef, 0x020a) },         /* AVB Top Shot Pegasus */
 226         { USB_DEVICE(0x05ef, 0x8884) },         /* AVB Mag Turbo Force */
 227         { USB_DEVICE(0x05ef, 0x8888) },         /* AVB Top Shot FFB Racing Wheel */
 228         { USB_DEVICE(0x061c, 0xc0a4) },         /* ACT LABS Force RS */
 229         { USB_DEVICE(0x06f8, 0x0001) },         /* Guillemot Race Leader Force Feedback */
 230         { USB_DEVICE(0x06f8, 0x0004) },         /* Guillemot Force Feedback Racing Wheel */
 231         { USB_DEVICE(0x06f8, 0xa302) },         /* Guillemot Jet Leader 3D */
 232         { }                                     /* Terminating entry */
 233 };
 234
 235 MODULE_DEVICE_TABLE (usb, iforce_usb_ids);
 236
 237 struct usb_driver iforce_usb_driver = {
 238         .owner =        THIS_MODULE,
 239         .name =         "iforce",
 240         .probe =        iforce_usb_probe,
 241         .disconnect =   iforce_usb_disconnect,
 242         .id_table =     iforce_usb_ids,
 243 };