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
iforce_usb_xmit(struct iforce * iforce)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
iforce_usb_irq(struct urb * urb)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
iforce_usb_out(struct urb * urb)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
iforce_usb_ctrl(struct urb * urb)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
iforce_usb_probe(struct usb_interface * intf,const struct usb_device_id * id)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
iforce_usb_disconnect(struct usb_interface * intf)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
