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->intf->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         struct device *dev = &iforce->intf->dev;
  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                 dev_dbg(dev, "%s - urb shutting down with status: %d\n",
  91                         __func__, urb->status);
  92                 return;
  93         default:
  94                 dev_dbg(dev, "%s - urb has status of: %d\n",
  95                         __func__, urb->status);
  96                 goto exit;
  97         }
  98
  99         iforce_process_packet(iforce,
 100                 (iforce->data[0] << 8) | (urb->actual_length - 1), iforce->data + 1);
 101
 102 exit:
 103         status = usb_submit_urb (urb, GFP_ATOMIC);
 104         if (status)
 105                 dev_err(dev, "%s - usb_submit_urb failed with result %d\n",
 106                         __func__, status);
 107 }
 108
 109 static void iforce_usb_out(struct urb *urb)
 110 {
 111         struct iforce *iforce = urb->context;
 112
 113         if (urb->status) {
 114                 clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
 115                 dev_dbg(&iforce->intf->dev, "urb->status %d, exiting\n",
 116                         urb->status);
 117                 return;
 118         }
 119
 120         iforce_usb_xmit(iforce);
 121
 122         wake_up(&iforce->wait);
 123 }
 124
 125 static void iforce_usb_ctrl(struct urb *urb)
 126 {
 127         struct iforce *iforce = urb->context;
 128         if (urb->status) return;
 129         iforce->ecmd = 0xff00 | urb->actual_length;
 130         wake_up(&iforce->wait);
 131 }
 132
 133 static int iforce_usb_probe(struct usb_interface *intf,
 134                                 const struct usb_device_id *id)
 135 {
 136         struct usb_device *dev = interface_to_usbdev(intf);
 137         struct usb_host_interface *interface;
 138         struct usb_endpoint_descriptor *epirq, *epout;
 139         struct iforce *iforce;
 140         int err = -ENOMEM;
 141
 142         interface = intf->cur_altsetting;
 143
 144         epirq = &interface->endpoint[0].desc;
 145         epout = &interface->endpoint[1].desc;
 146
 147         if (!(iforce = kzalloc(sizeof(struct iforce) + 32, GFP_KERNEL)))
 148                 goto fail;
 149
 150         if (!(iforce->irq = usb_alloc_urb(0, GFP_KERNEL)))
 151                 goto fail;
 152
 153         if (!(iforce->out = usb_alloc_urb(0, GFP_KERNEL)))
 154                 goto fail;
 155
 156         if (!(iforce->ctrl = usb_alloc_urb(0, GFP_KERNEL)))
 157                 goto fail;
 158
 159         iforce->bus = IFORCE_USB;
 160         iforce->usbdev = dev;
 161         iforce->intf = intf;
 162
 163         iforce->cr.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_INTERFACE;
 164         iforce->cr.wIndex = 0;
 165         iforce->cr.wLength = cpu_to_le16(16);
 166
 167         usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress),
 168                         iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval);
 169
 170         usb_fill_int_urb(iforce->out, dev, usb_sndintpipe(dev, epout->bEndpointAddress),
 171                         iforce + 1, 32, iforce_usb_out, iforce, epout->bInterval);
 172
 173         usb_fill_control_urb(iforce->ctrl, dev, usb_rcvctrlpipe(dev, 0),
 174                         (void*) &iforce->cr, iforce->edata, 16, iforce_usb_ctrl, iforce);
 175
 176         err = iforce_init_device(iforce);
 177         if (err)
 178                 goto fail;
 179
 180         usb_set_intfdata(intf, iforce);
 181         return 0;
 182
 183 fail:
 184         if (iforce) {
 185                 usb_free_urb(iforce->irq);
 186                 usb_free_urb(iforce->out);
 187                 usb_free_urb(iforce->ctrl);
 188                 kfree(iforce);
 189         }
 190
 191         return err;
 192 }
 193
 194 static void iforce_usb_disconnect(struct usb_interface *intf)
 195 {
 196         struct iforce *iforce = usb_get_intfdata(intf);
 197
 198         usb_set_intfdata(intf, NULL);
 199
 200         input_unregister_device(iforce->dev);
 201
 202         usb_free_urb(iforce->irq);
 203         usb_free_urb(iforce->out);
 204         usb_free_urb(iforce->ctrl);
 205
 206         kfree(iforce);
 207 }
 208
 209 static struct usb_device_id iforce_usb_ids [] = {
 210         { USB_DEVICE(0x044f, 0xa01c) },         /* Thrustmaster Motor Sport GT */
 211         { USB_DEVICE(0x046d, 0xc281) },         /* Logitech WingMan Force */
 212         { USB_DEVICE(0x046d, 0xc291) },         /* Logitech WingMan Formula Force */
 213         { USB_DEVICE(0x05ef, 0x020a) },         /* AVB Top Shot Pegasus */
 214         { USB_DEVICE(0x05ef, 0x8884) },         /* AVB Mag Turbo Force */
 215         { USB_DEVICE(0x05ef, 0x8888) },         /* AVB Top Shot FFB Racing Wheel */
 216         { USB_DEVICE(0x061c, 0xc0a4) },         /* ACT LABS Force RS */
 217         { USB_DEVICE(0x061c, 0xc084) },         /* ACT LABS Force RS */
 218         { USB_DEVICE(0x06f8, 0x0001) },         /* Guillemot Race Leader Force Feedback */
 219         { USB_DEVICE(0x06f8, 0x0003) },         /* Guillemot Jet Leader Force Feedback */
 220         { USB_DEVICE(0x06f8, 0x0004) },         /* Guillemot Force Feedback Racing Wheel */
 221         { USB_DEVICE(0x06f8, 0xa302) },         /* Guillemot Jet Leader 3D */
 222         { }                                     /* Terminating entry */
 223 };
 224
 225 MODULE_DEVICE_TABLE (usb, iforce_usb_ids);
 226
 227 struct usb_driver iforce_usb_driver = {
 228         .name =         "iforce",
 229         .probe =        iforce_usb_probe,
 230         .disconnect =   iforce_usb_disconnect,
 231         .id_table =     iforce_usb_ids,
 232 };