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1/*
2 * ZTE_EV USB serial driver
3 *
4 * Copyright (C) 2012 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 * Copyright (C) 2012 Linux Foundation
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 * This driver is based on code found in a ZTE_ENV patch that modified
12 * the usb-serial generic driver. Comments were left in that I think
13 * show the commands used to talk to the device, but I am not sure.
14 */
15#include <linux/kernel.h>
16#include <linux/tty.h>
17#include <linux/slab.h>
18#include <linux/module.h>
19#include <linux/usb.h>
20#include <linux/usb/serial.h>
21#include <linux/uaccess.h>
22
23#define MAX_SETUP_DATA_SIZE 32
24
25static void debug_data(struct device *dev, const char *function, int len,
26 const unsigned char *data, int result)
27{
28 dev_dbg(dev, "result = %d\n", result);
29 if (result == len)
30 dev_dbg(dev, "%s - length = %d, data = %*ph\n", function,
31 len, len, data);
32}
33
34static int zte_ev_usb_serial_open(struct tty_struct *tty,
35 struct usb_serial_port *port)
36{
37 struct usb_device *udev = port->serial->dev;
38 struct device *dev = &port->dev;
39 int result = 0;
40 int len;
41 unsigned char *buf;
42
43 buf = kmalloc(MAX_SETUP_DATA_SIZE, GFP_KERNEL);
44 if (!buf)
45 return -ENOMEM;
46
47 /* send 1st ctl cmd(CTL 21 22 01 00 00 00 00 00) */
48 len = 0;
49 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
50 0x22, 0x21,
51 0x0001, 0x0000, NULL, len,
52 USB_CTRL_GET_TIMEOUT);
53 dev_dbg(dev, "result = %d\n", result);
54
55 /* send 2st cmd and receive data */
56 /*
57 * 16.0 CTL a1 21 00 00 00 00 07 00 CLASS 25.1.0(5)
58 * 16.0 DI 00 96 00 00 00 00 08
59 */
60 len = 0x0007;
61 result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
62 0x21, 0xa1,
63 0x0000, 0x0000, buf, len,
64 USB_CTRL_GET_TIMEOUT);
65 debug_data(dev, __func__, len, buf, result);
66
67 /* send 3rd cmd */
68 /*
69 * 16.0 CTL 21 20 00 00 00 00 07 00 CLASS 30.1.0
70 * 16.0 DO 80 25 00 00 00 00 08 .%..... 30.2.0
71 */
72 len = 0x0007;
73 buf[0] = 0x80;
74 buf[1] = 0x25;
75 buf[2] = 0x00;
76 buf[3] = 0x00;
77 buf[4] = 0x00;
78 buf[5] = 0x00;
79 buf[6] = 0x08;
80 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
81 0x20, 0x21,
82 0x0000, 0x0000, buf, len,
83 USB_CTRL_GET_TIMEOUT);
84 debug_data(dev, __func__, len, buf, result);
85
86 /* send 4th cmd */
87 /*
88 * 16.0 CTL 21 22 03 00 00 00 00 00
89 */
90 len = 0;
91 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
92 0x22, 0x21,
93 0x0003, 0x0000, NULL, len,
94 USB_CTRL_GET_TIMEOUT);
95 dev_dbg(dev, "result = %d\n", result);
96
97 /* send 5th cmd */
98 /*
99 * 16.0 CTL a1 21 00 00 00 00 07 00 CLASS 33.1.0
100 * 16.0 DI 80 25 00 00 00 00 08
101 */
102 len = 0x0007;
103 result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
104 0x21, 0xa1,
105 0x0000, 0x0000, buf, len,
106 USB_CTRL_GET_TIMEOUT);
107 debug_data(dev, __func__, len, buf, result);
108
109 /* send 6th cmd */
110 /*
111 * 16.0 CTL 21 20 00 00 00 00 07 00 CLASS 34.1.0
112 * 16.0 DO 80 25 00 00 00 00 08
113 */
114 len = 0x0007;
115 buf[0] = 0x80;
116 buf[1] = 0x25;
117 buf[2] = 0x00;
118 buf[3] = 0x00;
119 buf[4] = 0x00;
120 buf[5] = 0x00;
121 buf[6] = 0x08;
122 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
123 0x20, 0x21,
124 0x0000, 0x0000, buf, len,
125 USB_CTRL_GET_TIMEOUT);
126 debug_data(dev, __func__, len, buf, result);
127 kfree(buf);
128
129 return usb_serial_generic_open(tty, port);
130}
131
132/*
133 * CTL 21 22 02 00 00 00 00 00 CLASS 338.1.0
134 *
135 * 16.1 DI a1 20 00 00 00 00 02 00 02 00 . ........ 340.1.0
136 * 16.0 CTL 21 22 03 00 00 00 00 00 CLASS 341.1.0
137 *
138 * 16.0 CTL a1 21 00 00 00 00 07 00 CLASS 346.1.0(3)
139 * 16.0 DI 00 08 07 00 00 00 08 ....... 346.2.0
140 *
141 * 16.0 CTL 21 20 00 00 00 00 07 00 CLASS 349.1.0
142 * 16.0 DO 00 c2 01 00 00 00 08 ....... 349.2.0
143 *
144 * 16.0 CTL 21 22 03 00 00 00 00 00 CLASS 350.1.0(2)
145 *
146 * 16.0 CTL a1 21 00 00 00 00 07 00 CLASS 352.1.0
147 * 16.0 DI 00 c2 01 00 00 00 08 ....... 352.2.0
148 *
149 * 16.1 DI a1 20 00 00 00 00 02 00 02 00 . ........ 353.1.0
150 *
151 * 16.0 CTL 21 20 00 00 00 00 07 00 CLASS 354.1.0
152 * 16.0 DO 00 c2 01 00 00 00 08 ....... 354.2.0
153 *
154 * 16.0 CTL 21 22 03 00 00 00 00 00
155*/
156
157static void zte_ev_usb_serial_close(struct usb_serial_port *port)
158{
159 struct usb_device *udev = port->serial->dev;
160 struct device *dev = &port->dev;
161 int result = 0;
162 int len;
163 unsigned char *buf;
164
165 buf = kmalloc(MAX_SETUP_DATA_SIZE, GFP_KERNEL);
166 if (!buf)
167 return;
168
169 /* send 1st ctl cmd(CTL 21 22 02 00 00 00 00 00) */
170 len = 0;
171 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
172 0x22, 0x21,
173 0x0002, 0x0000, NULL, len,
174 USB_CTRL_GET_TIMEOUT);
175 dev_dbg(dev, "result = %d\n", result);
176
177 /* send 2st ctl cmd(CTL 21 22 03 00 00 00 00 00 ) */
178 len = 0;
179 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
180 0x22, 0x21,
181 0x0003, 0x0000, NULL, len,
182 USB_CTRL_GET_TIMEOUT);
183 dev_dbg(dev, "result = %d\n", result);
184
185 /* send 3st cmd and recieve data */
186 /*
187 * 16.0 CTL a1 21 00 00 00 00 07 00 CLASS 25.1.0(5)
188 * 16.0 DI 00 08 07 00 00 00 08
189 */
190 len = 0x0007;
191 result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
192 0x21, 0xa1,
193 0x0000, 0x0000, buf, len,
194 USB_CTRL_GET_TIMEOUT);
195 debug_data(dev, __func__, len, buf, result);
196
197 /* send 4th cmd */
198 /*
199 * 16.0 CTL 21 20 00 00 00 00 07 00 CLASS 30.1.0
200 * 16.0 DO 00 c2 01 00 00 00 08 .%..... 30.2.0
201 */
202 len = 0x0007;
203 buf[0] = 0x00;
204 buf[1] = 0xc2;
205 buf[2] = 0x01;
206 buf[3] = 0x00;
207 buf[4] = 0x00;
208 buf[5] = 0x00;
209 buf[6] = 0x08;
210 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
211 0x20, 0x21,
212 0x0000, 0x0000, buf, len,
213 USB_CTRL_GET_TIMEOUT);
214 debug_data(dev, __func__, len, buf, result);
215
216 /* send 5th cmd */
217 /*
218 * 16.0 CTL 21 22 03 00 00 00 00 00
219 */
220 len = 0;
221 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
222 0x22, 0x21,
223 0x0003, 0x0000, NULL, len,
224 USB_CTRL_GET_TIMEOUT);
225 dev_dbg(dev, "result = %d\n", result);
226
227 /* send 6th cmd */
228 /*
229 * 16.0 CTL a1 21 00 00 00 00 07 00 CLASS 33.1.0
230 * 16.0 DI 00 c2 01 00 00 00 08
231 */
232 len = 0x0007;
233 result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
234 0x21, 0xa1,
235 0x0000, 0x0000, buf, len,
236 USB_CTRL_GET_TIMEOUT);
237 debug_data(dev, __func__, len, buf, result);
238
239 /* send 7th cmd */
240 /*
241 * 16.0 CTL 21 20 00 00 00 00 07 00 CLASS 354.1.0
242 * 16.0 DO 00 c2 01 00 00 00 08 ....... 354.2.0
243 */
244 len = 0x0007;
245 buf[0] = 0x00;
246 buf[1] = 0xc2;
247 buf[2] = 0x01;
248 buf[3] = 0x00;
249 buf[4] = 0x00;
250 buf[5] = 0x00;
251 buf[6] = 0x08;
252 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
253 0x20, 0x21,
254 0x0000, 0x0000, buf, len,
255 USB_CTRL_GET_TIMEOUT);
256 debug_data(dev, __func__, len, buf, result);
257
258 /* send 8th cmd */
259 /*
260 * 16.0 CTL 21 22 03 00 00 00 00 00
261 */
262 len = 0;
263 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
264 0x22, 0x21,
265 0x0003, 0x0000, NULL, len,
266 USB_CTRL_GET_TIMEOUT);
267 dev_dbg(dev, "result = %d\n", result);
268
269 kfree(buf);
270
271 usb_serial_generic_close(port);
272}
273
274static const struct usb_device_id id_table[] = {
275 /* AC8710, AC8710T */
276 { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xffff, 0xff, 0xff, 0xff) },
277 /* AC8700 */
278 { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xfffe, 0xff, 0xff, 0xff) },
279 /* MG880 */
280 { USB_DEVICE(0x19d2, 0xfffd) },
281 { USB_DEVICE(0x19d2, 0xfffc) },
282 { USB_DEVICE(0x19d2, 0xfffb) },
283 /* AC8710_V3 */
284 { USB_DEVICE(0x19d2, 0xfff6) },
285 { USB_DEVICE(0x19d2, 0xfff7) },
286 { USB_DEVICE(0x19d2, 0xfff8) },
287 { USB_DEVICE(0x19d2, 0xfff9) },
288 { USB_DEVICE(0x19d2, 0xffee) },
289 /* AC2716, MC2716 */
290 { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xffed, 0xff, 0xff, 0xff) },
291 /* AD3812 */
292 { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xffeb, 0xff, 0xff, 0xff) },
293 { USB_DEVICE(0x19d2, 0xffec) },
294 { USB_DEVICE(0x05C6, 0x3197) },
295 { USB_DEVICE(0x05C6, 0x6000) },
296 { USB_DEVICE(0x05C6, 0x9008) },
297 { },
298};
299MODULE_DEVICE_TABLE(usb, id_table);
300
301static struct usb_serial_driver zio_device = {
302 .driver = {
303 .owner = THIS_MODULE,
304 .name = "zte_ev",
305 },
306 .id_table = id_table,
307 .num_ports = 1,
308 .open = zte_ev_usb_serial_open,
309 .close = zte_ev_usb_serial_close,
310};
311
312static struct usb_serial_driver * const serial_drivers[] = {
313 &zio_device, NULL
314};
315
316module_usb_serial_driver(serial_drivers, id_table);
317MODULE_LICENSE("GPL v2");