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Diffstat (limited to 'drivers/usb/net/plusb.c')
-rw-r--r--drivers/usb/net/plusb.c150
1 files changed, 0 insertions, 150 deletions
diff --git a/drivers/usb/net/plusb.c b/drivers/usb/net/plusb.c
deleted file mode 100644
index 45300939d185..000000000000
--- a/drivers/usb/net/plusb.c
+++ /dev/null
@@ -1,150 +0,0 @@
1/*
2 * PL-2301/2302 USB host-to-host link cables
3 * Copyright (C) 2000-2005 by David Brownell
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20// #define DEBUG // error path messages, extra info
21// #define VERBOSE // more; success messages
22
23#include <linux/module.h>
24#include <linux/init.h>
25#include <linux/netdevice.h>
26#include <linux/etherdevice.h>
27#include <linux/ethtool.h>
28#include <linux/workqueue.h>
29#include <linux/mii.h>
30#include <linux/usb.h>
31
32#include "usbnet.h"
33
34
35/*
36 * Prolific PL-2301/PL-2302 driver ... http://www.prolifictech.com
37 *
38 * The protocol and handshaking used here should be bug-compatible
39 * with the Linux 2.2 "plusb" driver, by Deti Fliegl.
40 *
41 * HEADS UP: this handshaking isn't all that robust. This driver
42 * gets confused easily if you unplug one end of the cable then
43 * try to connect it again; you'll need to restart both ends. The
44 * "naplink" software (used by some PlayStation/2 deveopers) does
45 * the handshaking much better! Also, sometimes this hardware
46 * seems to get wedged under load. Prolific docs are weak, and
47 * don't identify differences between PL2301 and PL2302, much less
48 * anything to explain the different PL2302 versions observed.
49 */
50
51/*
52 * Bits 0-4 can be used for software handshaking; they're set from
53 * one end, cleared from the other, "read" with the interrupt byte.
54 */
55#define PL_S_EN (1<<7) /* (feature only) suspend enable */
56/* reserved bit -- rx ready (6) ? */
57#define PL_TX_READY (1<<5) /* (interrupt only) transmit ready */
58#define PL_RESET_OUT (1<<4) /* reset output pipe */
59#define PL_RESET_IN (1<<3) /* reset input pipe */
60#define PL_TX_C (1<<2) /* transmission complete */
61#define PL_TX_REQ (1<<1) /* transmission received */
62#define PL_PEER_E (1<<0) /* peer exists */
63
64static inline int
65pl_vendor_req(struct usbnet *dev, u8 req, u8 val, u8 index)
66{
67 return usb_control_msg(dev->udev,
68 usb_rcvctrlpipe(dev->udev, 0),
69 req,
70 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
71 val, index,
72 NULL, 0,
73 USB_CTRL_GET_TIMEOUT);
74}
75
76static inline int
77pl_clear_QuickLink_features(struct usbnet *dev, int val)
78{
79 return pl_vendor_req(dev, 1, (u8) val, 0);
80}
81
82static inline int
83pl_set_QuickLink_features(struct usbnet *dev, int val)
84{
85 return pl_vendor_req(dev, 3, (u8) val, 0);
86}
87
88static int pl_reset(struct usbnet *dev)
89{
90 /* some units seem to need this reset, others reject it utterly.
91 * FIXME be more like "naplink" or windows drivers.
92 */
93 (void) pl_set_QuickLink_features(dev,
94 PL_S_EN|PL_RESET_OUT|PL_RESET_IN|PL_PEER_E);
95 return 0;
96}
97
98static const struct driver_info prolific_info = {
99 .description = "Prolific PL-2301/PL-2302",
100 .flags = FLAG_NO_SETINT,
101 /* some PL-2302 versions seem to fail usb_set_interface() */
102 .reset = pl_reset,
103};
104
105
106/*-------------------------------------------------------------------------*/
107
108/*
109 * Proilific's name won't normally be on the cables, and
110 * may not be on the device.
111 */
112
113static const struct usb_device_id products [] = {
114
115{
116 USB_DEVICE(0x067b, 0x0000), // PL-2301
117 .driver_info = (unsigned long) &prolific_info,
118}, {
119 USB_DEVICE(0x067b, 0x0001), // PL-2302
120 .driver_info = (unsigned long) &prolific_info,
121},
122
123 { }, // END
124};
125MODULE_DEVICE_TABLE(usb, products);
126
127static struct usb_driver plusb_driver = {
128 .name = "plusb",
129 .id_table = products,
130 .probe = usbnet_probe,
131 .disconnect = usbnet_disconnect,
132 .suspend = usbnet_suspend,
133 .resume = usbnet_resume,
134};
135
136static int __init plusb_init(void)
137{
138 return usb_register(&plusb_driver);
139}
140module_init(plusb_init);
141
142static void __exit plusb_exit(void)
143{
144 usb_deregister(&plusb_driver);
145}
146module_exit(plusb_exit);
147
148MODULE_AUTHOR("David Brownell");
149MODULE_DESCRIPTION("Prolific PL-2301/2302 USB Host to Host Link Driver");
150MODULE_LICENSE("GPL");