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
iforce_usb_xmit(struct iforce * iforce)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
iforce_usb_irq(struct urb * urb)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
iforce_usb_out(struct urb * urb)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
iforce_usb_ctrl(struct urb * urb)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
iforce_usb_probe(struct usb_interface * intf,const struct usb_device_id * id)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 if (interface->desc.bNumEndpoints < 2)
145 return -ENODEV;
146
147 epirq = &interface->endpoint[0].desc;
148 if (!usb_endpoint_is_int_in(epirq))
149 return -ENODEV;
150
151 epout = &interface->endpoint[1].desc;
152 if (!usb_endpoint_is_int_out(epout))
153 return -ENODEV;
154
155 if (!(iforce = kzalloc(sizeof(struct iforce) + 32, GFP_KERNEL)))
156 goto fail;
157
158 if (!(iforce->irq = usb_alloc_urb(0, GFP_KERNEL)))
159 goto fail;
160
161 if (!(iforce->out = usb_alloc_urb(0, GFP_KERNEL)))
162 goto fail;
163
164 if (!(iforce->ctrl = usb_alloc_urb(0, GFP_KERNEL)))
165 goto fail;
166
167 iforce->bus = IFORCE_USB;
168 iforce->usbdev = dev;
169 iforce->intf = intf;
170
171 iforce->cr.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_INTERFACE;
172 iforce->cr.wIndex = 0;
173 iforce->cr.wLength = cpu_to_le16(16);
174
175 usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress),
176 iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval);
177
178 usb_fill_int_urb(iforce->out, dev, usb_sndintpipe(dev, epout->bEndpointAddress),
179 iforce + 1, 32, iforce_usb_out, iforce, epout->bInterval);
180
181 usb_fill_control_urb(iforce->ctrl, dev, usb_rcvctrlpipe(dev, 0),
182 (void*) &iforce->cr, iforce->edata, 16, iforce_usb_ctrl, iforce);
183
184 err = iforce_init_device(iforce);
185 if (err)
186 goto fail;
187
188 usb_set_intfdata(intf, iforce);
189 return 0;
190
191 fail:
192 if (iforce) {
193 usb_free_urb(iforce->irq);
194 usb_free_urb(iforce->out);
195 usb_free_urb(iforce->ctrl);
196 kfree(iforce);
197 }
198
199 return err;
200 }
201
iforce_usb_disconnect(struct usb_interface * intf)202 static void iforce_usb_disconnect(struct usb_interface *intf)
203 {
204 struct iforce *iforce = usb_get_intfdata(intf);
205
206 usb_set_intfdata(intf, NULL);
207
208 input_unregister_device(iforce->dev);
209
210 usb_free_urb(iforce->irq);
211 usb_free_urb(iforce->out);
212 usb_free_urb(iforce->ctrl);
213
214 kfree(iforce);
215 }
216
217 static struct usb_device_id iforce_usb_ids [] = {
218 { USB_DEVICE(0x044f, 0xa01c) }, /* Thrustmaster Motor Sport GT */
219 { USB_DEVICE(0x046d, 0xc281) }, /* Logitech WingMan Force */
220 { USB_DEVICE(0x046d, 0xc291) }, /* Logitech WingMan Formula Force */
221 { USB_DEVICE(0x05ef, 0x020a) }, /* AVB Top Shot Pegasus */
222 { USB_DEVICE(0x05ef, 0x8884) }, /* AVB Mag Turbo Force */
223 { USB_DEVICE(0x05ef, 0x8888) }, /* AVB Top Shot FFB Racing Wheel */
224 { USB_DEVICE(0x061c, 0xc0a4) }, /* ACT LABS Force RS */
225 { USB_DEVICE(0x061c, 0xc084) }, /* ACT LABS Force RS */
226 { USB_DEVICE(0x06f8, 0x0001) }, /* Guillemot Race Leader Force Feedback */
227 { USB_DEVICE(0x06f8, 0x0003) }, /* Guillemot Jet Leader Force Feedback */
228 { USB_DEVICE(0x06f8, 0x0004) }, /* Guillemot Force Feedback Racing Wheel */
229 { USB_DEVICE(0x06f8, 0xa302) }, /* Guillemot Jet Leader 3D */
230 { } /* Terminating entry */
231 };
232
233 MODULE_DEVICE_TABLE (usb, iforce_usb_ids);
234
235 struct usb_driver iforce_usb_driver = {
236 .name = "iforce",
237 .probe = iforce_usb_probe,
238 .disconnect = iforce_usb_disconnect,
239 .id_table = iforce_usb_ids,
240 };
241