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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2  /*
   3  *  Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
   4  *  Copyright (c) 2001-2002, 2007 Johann Deneux <johann.deneux@gmail.com>
   5  *
   6  *  USB/RS232 I-Force joysticks and wheels.
   7  */
   8
   9 /*
  10  */
  11
  12 #include "iforce.h"
  13
  14 void iforce_usb_xmit(struct iforce *iforce)
  15 {
  16         int n, c;
  17         unsigned long flags;
  18
  19         spin_lock_irqsave(&iforce->xmit_lock, flags);
  20
  21         if (iforce->xmit.head == iforce->xmit.tail) {
  22                 clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
  23                 spin_unlock_irqrestore(&iforce->xmit_lock, flags);
  24                 return;
  25         }
  26
  27         ((char *)iforce->out->transfer_buffer)[0] = iforce->xmit.buf[iforce->xmit.tail];
  28         XMIT_INC(iforce->xmit.tail, 1);
  29         n = iforce->xmit.buf[iforce->xmit.tail];
  30         XMIT_INC(iforce->xmit.tail, 1);
  31
  32         iforce->out->transfer_buffer_length = n + 1;
  33         iforce->out->dev = iforce->usbdev;
  34
  35         /* Copy rest of data then */
  36         c = CIRC_CNT_TO_END(iforce->xmit.head, iforce->xmit.tail, XMIT_SIZE);
  37         if (n < c) c=n;
  38
  39         memcpy(iforce->out->transfer_buffer + 1,
  40                &iforce->xmit.buf[iforce->xmit.tail],
  41                c);
  42         if (n != c) {
  43                 memcpy(iforce->out->transfer_buffer + 1 + c,
  44                        &iforce->xmit.buf[0],
  45                        n-c);
  46         }
  47         XMIT_INC(iforce->xmit.tail, n);
  48
  49         if ( (n=usb_submit_urb(iforce->out, GFP_ATOMIC)) ) {
  50                 clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
  51                 dev_warn(&iforce->intf->dev, "usb_submit_urb failed %d\n", n);
  52         }
  53
  54         /* The IFORCE_XMIT_RUNNING bit is not cleared here. That's intended.
  55          * As long as the urb completion handler is not called, the transmiting
  56          * is considered to be running */
  57         spin_unlock_irqrestore(&iforce->xmit_lock, flags);
  58 }
  59
  60 static void iforce_usb_irq(struct urb *urb)
  61 {
  62         struct iforce *iforce = urb->context;
  63         struct device *dev = &iforce->intf->dev;
  64         int status;
  65
  66         switch (urb->status) {
  67         case 0:
  68                 /* success */
  69                 break;
  70         case -ECONNRESET:
  71         case -ENOENT:
  72         case -ESHUTDOWN:
  73                 /* this urb is terminated, clean up */
  74                 dev_dbg(dev, "%s - urb shutting down with status: %d\n",
  75                         __func__, urb->status);
  76                 return;
  77         default:
  78                 dev_dbg(dev, "%s - urb has status of: %d\n",
  79                         __func__, urb->status);
  80                 goto exit;
  81         }
  82
  83         iforce_process_packet(iforce,
  84                 (iforce->data[0] << 8) | (urb->actual_length - 1), iforce->data + 1);
  85
  86 exit:
  87         status = usb_submit_urb (urb, GFP_ATOMIC);
  88         if (status)
  89                 dev_err(dev, "%s - usb_submit_urb failed with result %d\n",
  90                         __func__, status);
  91 }
  92
  93 static void iforce_usb_out(struct urb *urb)
  94 {
  95         struct iforce *iforce = urb->context;
  96
  97         if (urb->status) {
  98                 clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
  99                 dev_dbg(&iforce->intf->dev, "urb->status %d, exiting\n",
 100                         urb->status);
 101                 return;
 102         }
 103
 104         iforce_usb_xmit(iforce);
 105
 106         wake_up(&iforce->wait);
 107 }
 108
 109 static void iforce_usb_ctrl(struct urb *urb)
 110 {
 111         struct iforce *iforce = urb->context;
 112         if (urb->status) return;
 113         iforce->ecmd = 0xff00 | urb->actual_length;
 114         wake_up(&iforce->wait);
 115 }
 116
 117 static int iforce_usb_probe(struct usb_interface *intf,
 118                                 const struct usb_device_id *id)
 119 {
 120         struct usb_device *dev = interface_to_usbdev(intf);
 121         struct usb_host_interface *interface;
 122         struct usb_endpoint_descriptor *epirq, *epout;
 123         struct iforce *iforce;
 124         int err = -ENOMEM;
 125
 126         interface = intf->cur_altsetting;
 127
 128         if (interface->desc.bNumEndpoints < 2)
 129                 return -ENODEV;
 130
 131         epirq = &interface->endpoint[0].desc;
 132         epout = &interface->endpoint[1].desc;
 133
 134         if (!(iforce = kzalloc(sizeof(struct iforce) + 32, GFP_KERNEL)))
 135                 goto fail;
 136
 137         if (!(iforce->irq = usb_alloc_urb(0, GFP_KERNEL)))
 138                 goto fail;
 139
 140         if (!(iforce->out = usb_alloc_urb(0, GFP_KERNEL)))
 141                 goto fail;
 142
 143         if (!(iforce->ctrl = usb_alloc_urb(0, GFP_KERNEL)))
 144                 goto fail;
 145
 146         iforce->bus = IFORCE_USB;
 147         iforce->usbdev = dev;
 148         iforce->intf = intf;
 149
 150         iforce->cr.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_INTERFACE;
 151         iforce->cr.wIndex = 0;
 152         iforce->cr.wLength = cpu_to_le16(16);
 153
 154         usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress),
 155                         iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval);
 156
 157         usb_fill_int_urb(iforce->out, dev, usb_sndintpipe(dev, epout->bEndpointAddress),
 158                         iforce + 1, 32, iforce_usb_out, iforce, epout->bInterval);
 159
 160         usb_fill_control_urb(iforce->ctrl, dev, usb_rcvctrlpipe(dev, 0),
 161                         (void*) &iforce->cr, iforce->edata, 16, iforce_usb_ctrl, iforce);
 162
 163         err = iforce_init_device(iforce);
 164         if (err)
 165                 goto fail;
 166
 167         usb_set_intfdata(intf, iforce);
 168         return 0;
 169
 170 fail:
 171         if (iforce) {
 172                 usb_free_urb(iforce->irq);
 173                 usb_free_urb(iforce->out);
 174                 usb_free_urb(iforce->ctrl);
 175                 kfree(iforce);
 176         }
 177
 178         return err;
 179 }
 180
 181 static void iforce_usb_disconnect(struct usb_interface *intf)
 182 {
 183         struct iforce *iforce = usb_get_intfdata(intf);
 184
 185         usb_set_intfdata(intf, NULL);
 186
 187         input_unregister_device(iforce->dev);
 188
 189         usb_free_urb(iforce->irq);
 190         usb_free_urb(iforce->out);
 191         usb_free_urb(iforce->ctrl);
 192
 193         kfree(iforce);
 194 }
 195
 196 static const struct usb_device_id iforce_usb_ids[] = {
 197         { USB_DEVICE(0x044f, 0xa01c) },         /* Thrustmaster Motor Sport GT */
 198         { USB_DEVICE(0x046d, 0xc281) },         /* Logitech WingMan Force */
 199         { USB_DEVICE(0x046d, 0xc291) },         /* Logitech WingMan Formula Force */
 200         { USB_DEVICE(0x05ef, 0x020a) },         /* AVB Top Shot Pegasus */
 201         { USB_DEVICE(0x05ef, 0x8884) },         /* AVB Mag Turbo Force */
 202         { USB_DEVICE(0x05ef, 0x8888) },         /* AVB Top Shot FFB Racing Wheel */
 203         { USB_DEVICE(0x061c, 0xc0a4) },         /* ACT LABS Force RS */
 204         { USB_DEVICE(0x061c, 0xc084) },         /* ACT LABS Force RS */
 205         { USB_DEVICE(0x06f8, 0x0001) },         /* Guillemot Race Leader Force Feedback */
 206         { USB_DEVICE(0x06f8, 0x0003) },         /* Guillemot Jet Leader Force Feedback */
 207         { USB_DEVICE(0x06f8, 0x0004) },         /* Guillemot Force Feedback Racing Wheel */
 208         { USB_DEVICE(0x06f8, 0xa302) },         /* Guillemot Jet Leader 3D */
 209         { }                                     /* Terminating entry */
 210 };
 211
 212 MODULE_DEVICE_TABLE (usb, iforce_usb_ids);
 213
 214 struct usb_driver iforce_usb_driver = {
 215         .name =         "iforce",
 216         .probe =        iforce_usb_probe,
 217         .disconnect =   iforce_usb_disconnect,
 218         .id_table =     iforce_usb_ids,
 219 };