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
30void 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
76static 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
102exit:
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
109static 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
125static 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
133static 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	epirq = &interface->endpoint[0].desc;
145	epout = &interface->endpoint[1].desc;
146
147	if (!(iforce = kzalloc(sizeof(struct iforce) + 32, GFP_KERNEL)))
148		goto fail;
149
150	if (!(iforce->irq = usb_alloc_urb(0, GFP_KERNEL)))
151		goto fail;
152
153	if (!(iforce->out = usb_alloc_urb(0, GFP_KERNEL)))
154		goto fail;
155
156	if (!(iforce->ctrl = usb_alloc_urb(0, GFP_KERNEL)))
157		goto fail;
158
159	iforce->bus = IFORCE_USB;
160	iforce->usbdev = dev;
161	iforce->intf = intf;
162
163	iforce->cr.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_INTERFACE;
164	iforce->cr.wIndex = 0;
165	iforce->cr.wLength = cpu_to_le16(16);
166
167	usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress),
168			iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval);
169
170	usb_fill_int_urb(iforce->out, dev, usb_sndintpipe(dev, epout->bEndpointAddress),
171			iforce + 1, 32, iforce_usb_out, iforce, epout->bInterval);
172
173	usb_fill_control_urb(iforce->ctrl, dev, usb_rcvctrlpipe(dev, 0),
174			(void*) &iforce->cr, iforce->edata, 16, iforce_usb_ctrl, iforce);
175
176	err = iforce_init_device(iforce);
177	if (err)
178		goto fail;
179
180	usb_set_intfdata(intf, iforce);
181	return 0;
182
183fail:
184	if (iforce) {
185		usb_free_urb(iforce->irq);
186		usb_free_urb(iforce->out);
187		usb_free_urb(iforce->ctrl);
188		kfree(iforce);
189	}
190
191	return err;
192}
193
194static void iforce_usb_disconnect(struct usb_interface *intf)
195{
196	struct iforce *iforce = usb_get_intfdata(intf);
197
198	usb_set_intfdata(intf, NULL);
199
200	input_unregister_device(iforce->dev);
201
202	usb_free_urb(iforce->irq);
203	usb_free_urb(iforce->out);
204	usb_free_urb(iforce->ctrl);
205
206	kfree(iforce);
207}
208
209static struct usb_device_id iforce_usb_ids [] = {
210	{ USB_DEVICE(0x044f, 0xa01c) },		/* Thrustmaster Motor Sport GT */
211	{ USB_DEVICE(0x046d, 0xc281) },		/* Logitech WingMan Force */
212	{ USB_DEVICE(0x046d, 0xc291) },		/* Logitech WingMan Formula Force */
213	{ USB_DEVICE(0x05ef, 0x020a) },		/* AVB Top Shot Pegasus */
214	{ USB_DEVICE(0x05ef, 0x8884) },		/* AVB Mag Turbo Force */
215	{ USB_DEVICE(0x05ef, 0x8888) },		/* AVB Top Shot FFB Racing Wheel */
216	{ USB_DEVICE(0x061c, 0xc0a4) },         /* ACT LABS Force RS */
217	{ USB_DEVICE(0x061c, 0xc084) },         /* ACT LABS Force RS */
218	{ USB_DEVICE(0x06f8, 0x0001) },		/* Guillemot Race Leader Force Feedback */
219	{ USB_DEVICE(0x06f8, 0x0003) },		/* Guillemot Jet Leader Force Feedback */
220	{ USB_DEVICE(0x06f8, 0x0004) },		/* Guillemot Force Feedback Racing Wheel */
221	{ USB_DEVICE(0x06f8, 0xa302) },		/* Guillemot Jet Leader 3D */
222	{ }					/* Terminating entry */
223};
224
225MODULE_DEVICE_TABLE (usb, iforce_usb_ids);
226
227struct usb_driver iforce_usb_driver = {
228	.name =		"iforce",
229	.probe =	iforce_usb_probe,
230	.disconnect =	iforce_usb_disconnect,
231	.id_table =	iforce_usb_ids,
232};
233