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 24 #include "iforce.h" 25 26 void iforce_usb_xmit(struct iforce *iforce) 27 { 28 int n, c; 29 unsigned long flags; 30 31 spin_lock_irqsave(&iforce->xmit_lock, flags); 32 33 if (iforce->xmit.head == iforce->xmit.tail) { 34 clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags); 35 spin_unlock_irqrestore(&iforce->xmit_lock, flags); 36 return; 37 } 38 39 ((char *)iforce->out->transfer_buffer)[0] = iforce->xmit.buf[iforce->xmit.tail]; 40 XMIT_INC(iforce->xmit.tail, 1); 41 n = iforce->xmit.buf[iforce->xmit.tail]; 42 XMIT_INC(iforce->xmit.tail, 1); 43 44 iforce->out->transfer_buffer_length = n + 1; 45 iforce->out->dev = iforce->usbdev; 46 47 /* Copy rest of data then */ 48 c = CIRC_CNT_TO_END(iforce->xmit.head, iforce->xmit.tail, XMIT_SIZE); 49 if (n < c) c=n; 50 51 memcpy(iforce->out->transfer_buffer + 1, 52 &iforce->xmit.buf[iforce->xmit.tail], 53 c); 54 if (n != c) { 55 memcpy(iforce->out->transfer_buffer + 1 + c, 56 &iforce->xmit.buf[0], 57 n-c); 58 } 59 XMIT_INC(iforce->xmit.tail, n); 60 61 if ( (n=usb_submit_urb(iforce->out, GFP_ATOMIC)) ) { 62 clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags); 63 dev_warn(&iforce->intf->dev, "usb_submit_urb failed %d\n", n); 64 } 65 66 /* The IFORCE_XMIT_RUNNING bit is not cleared here. That's intended. 67 * As long as the urb completion handler is not called, the transmiting 68 * is considered to be running */ 69 spin_unlock_irqrestore(&iforce->xmit_lock, flags); 70 } 71 72 static void iforce_usb_irq(struct urb *urb) 73 { 74 struct iforce *iforce = urb->context; 75 struct device *dev = &iforce->intf->dev; 76 int status; 77 78 switch (urb->status) { 79 case 0: 80 /* success */ 81 break; 82 case -ECONNRESET: 83 case -ENOENT: 84 case -ESHUTDOWN: 85 /* this urb is terminated, clean up */ 86 dev_dbg(dev, "%s - urb shutting down with status: %d\n", 87 __func__, urb->status); 88 return; 89 default: 90 dev_dbg(dev, "%s - urb has status of: %d\n", 91 __func__, urb->status); 92 goto exit; 93 } 94 95 iforce_process_packet(iforce, 96 (iforce->data[0] << 8) | (urb->actual_length - 1), iforce->data + 1); 97 98 exit: 99 status = usb_submit_urb (urb, GFP_ATOMIC); 100 if (status) 101 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", 102 __func__, status); 103 } 104 105 static void iforce_usb_out(struct urb *urb) 106 { 107 struct iforce *iforce = urb->context; 108 109 if (urb->status) { 110 clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags); 111 dev_dbg(&iforce->intf->dev, "urb->status %d, exiting\n", 112 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 if (interface->desc.bNumEndpoints < 2) 141 return -ENODEV; 142 143 epirq = &interface->endpoint[0].desc; 144 epout = &interface->endpoint[1].desc; 145 146 if (!(iforce = kzalloc(sizeof(struct iforce) + 32, GFP_KERNEL))) 147 goto fail; 148 149 if (!(iforce->irq = usb_alloc_urb(0, GFP_KERNEL))) 150 goto fail; 151 152 if (!(iforce->out = usb_alloc_urb(0, GFP_KERNEL))) 153 goto fail; 154 155 if (!(iforce->ctrl = usb_alloc_urb(0, GFP_KERNEL))) 156 goto fail; 157 158 iforce->bus = IFORCE_USB; 159 iforce->usbdev = dev; 160 iforce->intf = intf; 161 162 iforce->cr.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_INTERFACE; 163 iforce->cr.wIndex = 0; 164 iforce->cr.wLength = cpu_to_le16(16); 165 166 usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress), 167 iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval); 168 169 usb_fill_int_urb(iforce->out, dev, usb_sndintpipe(dev, epout->bEndpointAddress), 170 iforce + 1, 32, iforce_usb_out, iforce, epout->bInterval); 171 172 usb_fill_control_urb(iforce->ctrl, dev, usb_rcvctrlpipe(dev, 0), 173 (void*) &iforce->cr, iforce->edata, 16, iforce_usb_ctrl, iforce); 174 175 err = iforce_init_device(iforce); 176 if (err) 177 goto fail; 178 179 usb_set_intfdata(intf, iforce); 180 return 0; 181 182 fail: 183 if (iforce) { 184 usb_free_urb(iforce->irq); 185 usb_free_urb(iforce->out); 186 usb_free_urb(iforce->ctrl); 187 kfree(iforce); 188 } 189 190 return err; 191 } 192 193 static void iforce_usb_disconnect(struct usb_interface *intf) 194 { 195 struct iforce *iforce = usb_get_intfdata(intf); 196 197 usb_set_intfdata(intf, NULL); 198 199 input_unregister_device(iforce->dev); 200 201 usb_free_urb(iforce->irq); 202 usb_free_urb(iforce->out); 203 usb_free_urb(iforce->ctrl); 204 205 kfree(iforce); 206 } 207 208 static const struct usb_device_id iforce_usb_ids[] = { 209 { USB_DEVICE(0x044f, 0xa01c) }, /* Thrustmaster Motor Sport GT */ 210 { USB_DEVICE(0x046d, 0xc281) }, /* Logitech WingMan Force */ 211 { USB_DEVICE(0x046d, 0xc291) }, /* Logitech WingMan Formula Force */ 212 { USB_DEVICE(0x05ef, 0x020a) }, /* AVB Top Shot Pegasus */ 213 { USB_DEVICE(0x05ef, 0x8884) }, /* AVB Mag Turbo Force */ 214 { USB_DEVICE(0x05ef, 0x8888) }, /* AVB Top Shot FFB Racing Wheel */ 215 { USB_DEVICE(0x061c, 0xc0a4) }, /* ACT LABS Force RS */ 216 { USB_DEVICE(0x061c, 0xc084) }, /* ACT LABS Force RS */ 217 { USB_DEVICE(0x06f8, 0x0001) }, /* Guillemot Race Leader Force Feedback */ 218 { USB_DEVICE(0x06f8, 0x0003) }, /* Guillemot Jet Leader Force Feedback */ 219 { USB_DEVICE(0x06f8, 0x0004) }, /* Guillemot Force Feedback Racing Wheel */ 220 { USB_DEVICE(0x06f8, 0xa302) }, /* Guillemot Jet Leader 3D */ 221 { } /* Terminating entry */ 222 }; 223 224 MODULE_DEVICE_TABLE (usb, iforce_usb_ids); 225 226 struct usb_driver iforce_usb_driver = { 227 .name = "iforce", 228 .probe = iforce_usb_probe, 229 .disconnect = iforce_usb_disconnect, 230 .id_table = iforce_usb_ids, 231 }; 232