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

   1  /*
   2  *  Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
   3  *  Copyright (c) 2001-2002, 2007 Johann Deneux <johann.deneux@gmail.com>
   4  *
   5  *  USB/RS232 I-Force joysticks and wheels.
   6  */
   7
   8 /*
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22  *
  23  * Should you need to contact me, the author, you can do so either by
  24  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  25  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  26  */
  27
  28 #include "iforce.h"
  29
  30 void iforce_usb_xmit(struct iforce *iforce)
  31 {
  32         int n, c;
  33         unsigned long flags;
  34
  35         spin_lock_irqsave(&iforce->xmit_lock, flags);
  36
  37         if (iforce->xmit.head == iforce->xmit.tail) {
  38                 clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
  39                 spin_unlock_irqrestore(&iforce->xmit_lock, flags);
  40                 return;
  41         }
  42
  43         ((char *)iforce->out->transfer_buffer)[0] = iforce->xmit.buf[iforce->xmit.tail];
  44         XMIT_INC(iforce->xmit.tail, 1);
  45         n = iforce->xmit.buf[iforce->xmit.tail];
  46         XMIT_INC(iforce->xmit.tail, 1);
  47
  48         iforce->out->transfer_buffer_length = n + 1;
  49         iforce->out->dev = iforce->usbdev;
  50
  51         /* Copy rest of data then */
  52         c = CIRC_CNT_TO_END(iforce->xmit.head, iforce->xmit.tail, XMIT_SIZE);
  53         if (n < c) c=n;
  54
  55         memcpy(iforce->out->transfer_buffer + 1,
  56                &iforce->xmit.buf[iforce->xmit.tail],
  57                c);
  58         if (n != c) {
  59                 memcpy(iforce->out->transfer_buffer + 1 + c,
  60                        &iforce->xmit.buf[0],
  61                        n-c);
  62         }
  63         XMIT_INC(iforce->xmit.tail, n);
  64
  65         if ( (n=usb_submit_urb(iforce->out, GFP_ATOMIC)) ) {
  66                 clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
  67                 dev_warn(&iforce->dev->dev, "usb_submit_urb failed %d\n", n);
  68         }
  69
  70         /* The IFORCE_XMIT_RUNNING bit is not cleared here. That's intended.
  71          * As long as the urb completion handler is not called, the transmiting
  72          * is considered to be running */
  73         spin_unlock_irqrestore(&iforce->xmit_lock, flags);
  74 }
  75
  76 static void iforce_usb_irq(struct urb *urb)
  77 {
  78         struct iforce *iforce = urb->context;
  79         int status;
  80
  81         switch (urb->status) {
  82         case 0:
  83                 /* success */
  84                 break;
  85         case -ECONNRESET:
  86         case -ENOENT:
  87         case -ESHUTDOWN:
  88                 /* this urb is terminated, clean up */
  89                 dbg("%s - urb shutting down with status: %d",
  90                     __func__, urb->status);
  91                 return;
  92         default:
  93                 dbg("%s - urb has status of: %d", __func__, urb->status);
  94                 goto exit;
  95         }
  96
  97         iforce_process_packet(iforce,
  98                 (iforce->data[0] << 8) | (urb->actual_length - 1), iforce->data + 1);
  99
 100 exit:
 101         status = usb_submit_urb (urb, GFP_ATOMIC);
 102         if (status)
 103                 err ("%s - usb_submit_urb failed with result %d",
 104                      __func__, status);
 105 }
 106
 107 static void iforce_usb_out(struct urb *urb)
 108 {
 109         struct iforce *iforce = urb->context;
 110
 111         if (urb->status) {
 112                 dbg("urb->status %d, exiting", urb->status);
 113                 return;
 114         }
 115
 116         iforce_usb_xmit(iforce);
 117
 118         wake_up(&iforce->wait);
 119 }
 120
 121 static void iforce_usb_ctrl(struct urb *urb)
 122 {
 123         struct iforce *iforce = urb->context;
 124         if (urb->status) return;
 125         iforce->ecmd = 0xff00 | urb->actual_length;
 126         wake_up(&iforce->wait);
 127 }
 128
 129 static int iforce_usb_probe(struct usb_interface *intf,
 130                                 const struct usb_device_id *id)
 131 {
 132         struct usb_device *dev = interface_to_usbdev(intf);
 133         struct usb_host_interface *interface;
 134         struct usb_endpoint_descriptor *epirq, *epout;
 135         struct iforce *iforce;
 136         int err = -ENOMEM;
 137
 138         interface = intf->cur_altsetting;
 139
 140         epirq = &interface->endpoint[0].desc;
 141         epout = &interface->endpoint[1].desc;
 142
 143         if (!(iforce = kzalloc(sizeof(struct iforce) + 32, GFP_KERNEL)))
 144                 goto fail;
 145
 146         if (!(iforce->irq = usb_alloc_urb(0, GFP_KERNEL)))
 147                 goto fail;
 148
 149         if (!(iforce->out = usb_alloc_urb(0, GFP_KERNEL)))
 150                 goto fail;
 151
 152         if (!(iforce->ctrl = usb_alloc_urb(0, GFP_KERNEL)))
 153                 goto fail;
 154
 155         iforce->bus = IFORCE_USB;
 156         iforce->usbdev = dev;
 157
 158         iforce->cr.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_INTERFACE;
 159         iforce->cr.wIndex = 0;
 160         iforce->cr.wLength = cpu_to_le16(16);
 161
 162         usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress),
 163                         iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval);
 164
 165         usb_fill_int_urb(iforce->out, dev, usb_sndintpipe(dev, epout->bEndpointAddress),
 166                         iforce + 1, 32, iforce_usb_out, iforce, epout->bInterval);
 167
 168         usb_fill_control_urb(iforce->ctrl, dev, usb_rcvctrlpipe(dev, 0),
 169                         (void*) &iforce->cr, iforce->edata, 16, iforce_usb_ctrl, iforce);
 170
 171         err = iforce_init_device(iforce);
 172         if (err)
 173                 goto fail;
 174
 175         usb_set_intfdata(intf, iforce);
 176         return 0;
 177
 178 fail:
 179         if (iforce) {
 180                 usb_free_urb(iforce->irq);
 181                 usb_free_urb(iforce->out);
 182                 usb_free_urb(iforce->ctrl);
 183                 kfree(iforce);
 184         }
 185
 186         return err;
 187 }
 188
 189 static void iforce_usb_disconnect(struct usb_interface *intf)
 190 {
 191         struct iforce *iforce = usb_get_intfdata(intf);
 192
 193         usb_set_intfdata(intf, NULL);
 194
 195         input_unregister_device(iforce->dev);
 196
 197         usb_free_urb(iforce->irq);
 198         usb_free_urb(iforce->out);
 199         usb_free_urb(iforce->ctrl);
 200
 201         kfree(iforce);
 202 }
 203
 204 static struct usb_device_id iforce_usb_ids [] = {
 205         { USB_DEVICE(0x044f, 0xa01c) },         /* Thrustmaster Motor Sport GT */
 206         { USB_DEVICE(0x046d, 0xc281) },         /* Logitech WingMan Force */
 207         { USB_DEVICE(0x046d, 0xc291) },         /* Logitech WingMan Formula Force */
 208         { USB_DEVICE(0x05ef, 0x020a) },         /* AVB Top Shot Pegasus */
 209         { USB_DEVICE(0x05ef, 0x8884) },         /* AVB Mag Turbo Force */
 210         { USB_DEVICE(0x05ef, 0x8888) },         /* AVB Top Shot FFB Racing Wheel */
 211         { USB_DEVICE(0x061c, 0xc0a4) },         /* ACT LABS Force RS */
 212         { USB_DEVICE(0x061c, 0xc084) },         /* ACT LABS Force RS */
 213         { USB_DEVICE(0x06f8, 0x0001) },         /* Guillemot Race Leader Force Feedback */
 214         { USB_DEVICE(0x06f8, 0x0004) },         /* Guillemot Force Feedback Racing Wheel */
 215         { USB_DEVICE(0x06f8, 0xa302) },         /* Guillemot Jet Leader 3D */
 216         { }                                     /* Terminating entry */
 217 };
 218
 219 MODULE_DEVICE_TABLE (usb, iforce_usb_ids);
 220
 221 struct usb_driver iforce_usb_driver = {
 222         .name =         "iforce",
 223         .probe =        iforce_usb_probe,
 224         .disconnect =   iforce_usb_disconnect,
 225         .id_table =     iforce_usb_ids,
 226 };