/* * Copyright (c) 2000-2002 Vojtech Pavlik * Copyright (c) 2001-2002, 2007 Johann Deneux * * 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 */ #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)) ) { clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags); dev_warn(&iforce->intf->dev, "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 iforce *iforce = urb->context; struct device *dev = &iforce->intf->dev; int status; switch (urb->status) { case 0: /* success */ break; case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: /* this urb is terminated, clean up */ dev_dbg(dev, "%s - urb shutting down with status: %d\n", __func__, urb->status); return; default: dev_dbg(dev, "%s - urb has status of: %d\n", __func__, urb->status); goto exit; } iforce_process_packet(iforce, (iforce->data[0] << 8) | (urb->actual_length - 1), iforce->data + 1); exit: status = usb_submit_urb (urb, GFP_ATOMIC); if (status) dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, status); } static void iforce_usb_out(struct urb *urb) { struct iforce *iforce = urb->context; if (urb->status) { clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags); dev_dbg(&iforce->intf->dev, "urb->status %d, exiting\n", urb->status); return; } iforce_usb_xmit(iforce); wake_up(&iforce->wait); } static void iforce_usb_ctrl(struct urb *urb) { 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; if (interface->desc.bNumEndpoints < 2) return -ENODEV; epirq = &interface->endpoint[0].desc; if (!usb_endpoint_is_int_in(epirq)) return -ENODEV; epout = &interface->endpoint[1].desc; if (!usb_endpoint_is_int_out(epout)) return -ENODEV; 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->intf = intf; iforce->cr.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_INTERFACE; iforce->cr.wIndex = 0; iforce->cr.wLength = cpu_to_le16(16); usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress), iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval); usb_fill_int_urb(iforce->out, dev, usb_sndintpipe(dev, epout->bEndpointAddress), iforce + 1, 32, iforce_usb_out, iforce, epout->bInterval); 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) { usb_free_urb(iforce->irq); usb_free_urb(iforce->out); usb_free_urb(iforce->ctrl); kfree(iforce); } return err; } static void iforce_usb_disconnect(struct usb_interface *intf) { struct iforce *iforce = usb_get_intfdata(intf); usb_set_intfdata(intf, NULL); input_unregister_device(iforce->dev); usb_free_urb(iforce->irq); usb_free_urb(iforce->out); usb_free_urb(iforce->ctrl); kfree(iforce); } static const 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(0x061c, 0xc084) }, /* ACT LABS Force RS */ { USB_DEVICE(0x06f8, 0x0001) }, /* Guillemot Race Leader Force Feedback */ { USB_DEVICE(0x06f8, 0x0003) }, /* Guillemot Jet 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 = { .name = "iforce", .probe = iforce_usb_probe, .disconnect = iforce_usb_disconnect, .id_table = iforce_usb_ids, };