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conn rcv_lock converted to spinlock, struct cor_sock created, kernel_packet skb_clone...
[cor_2_6_31.git] / drivers / usb / serial / ftdi_sio.c
blobb574878c78b27b633a056d96cf3eb36a25d098b6
1 /*
2 * USB FTDI SIO driver
3 *
4 * Copyright (C) 1999 - 2001
5 * Greg Kroah-Hartman (greg@kroah.com)
6 * Bill Ryder (bryder@sgi.com)
7 * Copyright (C) 2002
8 * Kuba Ober (kuba@mareimbrium.org)
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * See Documentation/usb/usb-serial.txt for more information on using this
16 * driver
17 *
18 * See http://ftdi-usb-sio.sourceforge.net for upto date testing info
19 * and extra documentation
20 *
21 * Change entries from 2004 and earlier can be found in versions of this
22 * file in kernel versions prior to the 2.6.24 release.
23 *
24 */
25
26 /* Bill Ryder - bryder@sgi.com - wrote the FTDI_SIO implementation */
27 /* Thanx to FTDI for so kindly providing details of the protocol required */
28 /* to talk to the device */
29 /* Thanx to gkh and the rest of the usb dev group for all code I have
30 assimilated :-) */
31
32 #include <linux/kernel.h>
33 #include <linux/errno.h>
34 #include <linux/init.h>
35 #include <linux/slab.h>
36 #include <linux/smp_lock.h>
37 #include <linux/tty.h>
38 #include <linux/tty_driver.h>
39 #include <linux/tty_flip.h>
40 #include <linux/module.h>
41 #include <linux/spinlock.h>
42 #include <linux/uaccess.h>
43 #include <linux/usb.h>
44 #include <linux/serial.h>
45 #include <linux/usb/serial.h>
46 #include "ftdi_sio.h"
47
48 /*
49 * Version Information
50 */
51 #define DRIVER_VERSION "v1.5.0"
52 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober <kuba@mareimbrium.org>"
53 #define DRIVER_DESC "USB FTDI Serial Converters Driver"
54
55 static int debug;
56 static __u16 vendor = FTDI_VID;
57 static __u16 product;
58
59 struct ftdi_private {
60 struct kref kref;
61 ftdi_chip_type_t chip_type;
62 /* type of device, either SIO or FT8U232AM */
63 int baud_base; /* baud base clock for divisor setting */
64 int custom_divisor; /* custom_divisor kludge, this is for
65 baud_base (different from what goes to the
66 chip!) */
67 __u16 last_set_data_urb_value ;
68 /* the last data state set - needed for doing
69 * a break
70 */
71 int write_offset; /* This is the offset in the usb data block to
72 * write the serial data - it varies between
73 * devices
74 */
75 int flags; /* some ASYNC_xxxx flags are supported */
76 unsigned long last_dtr_rts; /* saved modem control outputs */
77 wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
78 char prev_status, diff_status; /* Used for TIOCMIWAIT */
79 __u8 rx_flags; /* receive state flags (throttling) */
80 spinlock_t rx_lock; /* spinlock for receive state */
81 struct delayed_work rx_work;
82 struct usb_serial_port *port;
83 int rx_processed;
84 unsigned long rx_bytes;
85
86 __u16 interface; /* FT2232C, FT2232H or FT4232H port interface
87 (0 for FT232/245) */
88
89 speed_t force_baud; /* if non-zero, force the baud rate to
90 this value */
91 int force_rtscts; /* if non-zero, force RTS-CTS to always
92 be enabled */
93
94 unsigned int latency; /* latency setting in use */
95 spinlock_t tx_lock; /* spinlock for transmit state */
96 unsigned long tx_bytes;
97 unsigned long tx_outstanding_bytes;
98 unsigned long tx_outstanding_urbs;
99 unsigned short max_packet_size;
100 };
101
102 /* struct ftdi_sio_quirk is used by devices requiring special attention. */
103 struct ftdi_sio_quirk {
104 int (*probe)(struct usb_serial *);
105 /* Special settings for probed ports. */
106 void (*port_probe)(struct ftdi_private *);
107 };
108
109 static int ftdi_jtag_probe(struct usb_serial *serial);
110 static int ftdi_mtxorb_hack_setup(struct usb_serial *serial);
111 static int ftdi_NDI_device_setup(struct usb_serial *serial);
112 static void ftdi_USB_UIRT_setup(struct ftdi_private *priv);
113 static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv);
114
115 static struct ftdi_sio_quirk ftdi_jtag_quirk = {
116 .probe = ftdi_jtag_probe,
117 };
118
119 static struct ftdi_sio_quirk ftdi_mtxorb_hack_quirk = {
120 .probe = ftdi_mtxorb_hack_setup,
121 };
122
123 static struct ftdi_sio_quirk ftdi_NDI_device_quirk = {
124 .probe = ftdi_NDI_device_setup,
125 };
126
127 static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = {
128 .port_probe = ftdi_USB_UIRT_setup,
129 };
130
131 static struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = {
132 .port_probe = ftdi_HE_TIRA1_setup,
133 };
134
135 /*
136 * The 8U232AM has the same API as the sio except for:
137 * - it can support MUCH higher baudrates; up to:
138 * o 921600 for RS232 and 2000000 for RS422/485 at 48MHz
139 * o 230400 at 12MHz
140 * so .. 8U232AM's baudrate setting codes are different
141 * - it has a two byte status code.
142 * - it returns characters every 16ms (the FTDI does it every 40ms)
143 *
144 * the bcdDevice value is used to differentiate FT232BM and FT245BM from
145 * the earlier FT8U232AM and FT8U232BM. For now, include all known VID/PID
146 * combinations in both tables.
147 * FIXME: perhaps bcdDevice can also identify 12MHz FT8U232AM devices,
148 * but I don't know if those ever went into mass production. [Ian Abbott]
149 */
150
151
152
153 static struct usb_device_id id_table_combined [] = {
154 { USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) },
155 { USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) },
156 { USB_DEVICE(FTDI_VID, FTDI_CANDAPTER_PID) },
157 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_0_PID) },
158 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_1_PID) },
159 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_2_PID) },
160 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_3_PID) },
161 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_4_PID) },
162 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_5_PID) },
163 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_6_PID) },
164 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_7_PID) },
165 { USB_DEVICE(FTDI_VID, FTDI_ACTZWAVE_PID) },
166 { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) },
167 { USB_DEVICE(FTDI_VID, FTDI_IPLUS_PID) },
168 { USB_DEVICE(FTDI_VID, FTDI_IPLUS2_PID) },
169 { USB_DEVICE(FTDI_VID, FTDI_DMX4ALL) },
170 { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) },
171 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) },
172 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) },
173 { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) },
174 { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) },
175 { USB_DEVICE(FTDI_VID, FTDI_4232H_PID) },
176 { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) },
177 { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) },
178 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) },
179 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) },
180 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) },
181 { USB_DEVICE(FTDI_VID, FTDI_SPROG_II) },
182 { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) },
183 { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) },
184 { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) },
185 { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) },
186 { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) },
187 { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) },
188 { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) },
189 { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) },
190 { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) },
191 { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) },
192 { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) },
193 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) },
194 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) },
195 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) },
196 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) },
197 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) },
198 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) },
199 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) },
200 { USB_DEVICE(FTDI_VID, FTDI_R2000KU_TRUE_RNG) },
201 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0100_PID) },
202 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0101_PID) },
203 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0102_PID) },
204 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0103_PID) },
205 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0104_PID) },
206 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0105_PID) },
207 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0106_PID) },
208 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0107_PID) },
209 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0108_PID) },
210 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0109_PID) },
211 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010A_PID) },
212 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010B_PID) },
213 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010C_PID) },
214 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010D_PID) },
215 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010E_PID) },
216 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010F_PID) },
217 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0110_PID) },
218 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0111_PID) },
219 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0112_PID) },
220 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0113_PID) },
221 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0114_PID) },
222 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0115_PID) },
223 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0116_PID) },
224 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0117_PID) },
225 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0118_PID) },
226 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0119_PID) },
227 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011A_PID) },
228 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011B_PID) },
229 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011C_PID) },
230 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011D_PID) },
231 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011E_PID) },
232 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011F_PID) },
233 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0120_PID) },
234 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0121_PID) },
235 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0122_PID) },
236 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0123_PID) },
237 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0124_PID) },
238 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0125_PID) },
239 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0126_PID) },
240 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0127_PID),
241 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
242 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0128_PID) },
243 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0129_PID) },
244 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012A_PID) },
245 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012B_PID) },
246 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012C_PID),
247 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
248 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012D_PID) },
249 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012E_PID) },
250 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012F_PID) },
251 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0130_PID) },
252 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0131_PID) },
253 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0132_PID) },
254 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0133_PID) },
255 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0134_PID) },
256 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0135_PID) },
257 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0136_PID) },
258 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0137_PID) },
259 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0138_PID) },
260 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0139_PID) },
261 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013A_PID) },
262 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013B_PID) },
263 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013C_PID) },
264 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013D_PID) },
265 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013E_PID) },
266 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013F_PID) },
267 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0140_PID) },
268 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0141_PID) },
269 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0142_PID) },
270 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0143_PID) },
271 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0144_PID) },
272 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0145_PID) },
273 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0146_PID) },
274 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0147_PID) },
275 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0148_PID) },
276 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0149_PID) },
277 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014A_PID) },
278 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014B_PID) },
279 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014C_PID) },
280 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014D_PID) },
281 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014E_PID) },
282 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014F_PID) },
283 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0150_PID) },
284 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0151_PID) },
285 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0152_PID) },
286 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0153_PID),
287 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
288 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0154_PID),
289 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
290 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0155_PID),
291 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
292 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0156_PID),
293 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
294 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0157_PID),
295 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
296 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0158_PID),
297 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
298 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0159_PID) },
299 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015A_PID) },
300 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015B_PID) },
301 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015C_PID) },
302 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015D_PID) },
303 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015E_PID) },
304 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015F_PID) },
305 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0160_PID) },
306 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0161_PID) },
307 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0162_PID) },
308 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0163_PID) },
309 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0164_PID) },
310 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0165_PID) },
311 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0166_PID) },
312 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0167_PID) },
313 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0168_PID) },
314 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0169_PID) },
315 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016A_PID) },
316 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016B_PID) },
317 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016C_PID) },
318 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016D_PID) },
319 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016E_PID) },
320 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016F_PID) },
321 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0170_PID) },
322 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0171_PID) },
323 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0172_PID) },
324 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0173_PID) },
325 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0174_PID) },
326 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0175_PID) },
327 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0176_PID) },
328 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0177_PID) },
329 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0178_PID) },
330 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0179_PID) },
331 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017A_PID) },
332 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017B_PID) },
333 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017C_PID) },
334 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017D_PID) },
335 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017E_PID) },
336 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017F_PID) },
337 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0180_PID) },
338 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0181_PID) },
339 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0182_PID) },
340 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0183_PID) },
341 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0184_PID) },
342 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0185_PID) },
343 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0186_PID) },
344 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0187_PID) },
345 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0188_PID) },
346 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0189_PID) },
347 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018A_PID) },
348 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018B_PID) },
349 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018C_PID) },
350 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018D_PID) },
351 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018E_PID) },
352 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018F_PID) },
353 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0190_PID) },
354 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0191_PID) },
355 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0192_PID) },
356 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0193_PID) },
357 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0194_PID) },
358 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0195_PID) },
359 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0196_PID) },
360 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0197_PID) },
361 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0198_PID) },
362 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0199_PID) },
363 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019A_PID) },
364 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019B_PID) },
365 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019C_PID) },
366 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019D_PID) },
367 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019E_PID) },
368 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019F_PID) },
369 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A0_PID) },
370 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A1_PID) },
371 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A2_PID) },
372 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A3_PID) },
373 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A4_PID) },
374 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A5_PID) },
375 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A6_PID) },
376 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A7_PID) },
377 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A8_PID) },
378 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A9_PID) },
379 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AA_PID) },
380 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AB_PID) },
381 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AC_PID) },
382 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AD_PID) },
383 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AE_PID) },
384 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AF_PID) },
385 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B0_PID) },
386 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B1_PID) },
387 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B2_PID) },
388 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B3_PID) },
389 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B4_PID) },
390 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B5_PID) },
391 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B6_PID) },
392 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B7_PID) },
393 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B8_PID) },
394 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B9_PID) },
395 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BA_PID) },
396 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BB_PID) },
397 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BC_PID) },
398 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BD_PID) },
399 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BE_PID) },
400 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BF_PID) },
401 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C0_PID) },
402 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C1_PID) },
403 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C2_PID) },
404 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C3_PID) },
405 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C4_PID) },
406 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C5_PID) },
407 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C6_PID) },
408 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C7_PID) },
409 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C8_PID) },
410 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C9_PID) },
411 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CA_PID) },
412 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CB_PID) },
413 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CC_PID) },
414 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CD_PID) },
415 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CE_PID) },
416 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CF_PID) },
417 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D0_PID) },
418 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D1_PID) },
419 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D2_PID) },
420 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D3_PID) },
421 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D4_PID) },
422 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D5_PID) },
423 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D6_PID) },
424 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D7_PID) },
425 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D8_PID) },
426 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D9_PID) },
427 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DA_PID) },
428 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DB_PID) },
429 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DC_PID) },
430 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DD_PID) },
431 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DE_PID) },
432 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DF_PID) },
433 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E0_PID) },
434 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E1_PID) },
435 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E2_PID) },
436 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E3_PID) },
437 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E4_PID) },
438 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E5_PID) },
439 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E6_PID) },
440 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E7_PID) },
441 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E8_PID) },
442 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E9_PID) },
443 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EA_PID) },
444 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EB_PID) },
445 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EC_PID) },
446 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01ED_PID) },
447 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EE_PID) },
448 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EF_PID) },
449 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F0_PID) },
450 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F1_PID) },
451 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F2_PID) },
452 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F3_PID) },
453 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F4_PID) },
454 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F5_PID) },
455 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F6_PID) },
456 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F7_PID) },
457 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F8_PID) },
458 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F9_PID) },
459 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FA_PID) },
460 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FB_PID) },
461 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FC_PID) },
462 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FD_PID) },
463 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FE_PID) },
464 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FF_PID) },
465 { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) },
466 { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) },
467 { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) },
468 { USB_DEVICE(FTDI_VID, FTDI_USBX_707_PID) },
469 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) },
470 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) },
471 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) },
472 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) },
473 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2106_PID) },
474 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) },
475 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) },
476 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) },
477 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) },
478 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) },
479 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) },
480 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) },
481 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) },
482 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) },
483 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) },
484 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) },
485 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) },
486 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) },
487 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) },
488 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) },
489 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) },
490 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) },
491 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) },
492 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) },
493 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) },
494 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) },
495 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) },
496 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) },
497 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) },
498 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) },
499 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) },
500 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) },
501 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) },
502 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) },
503 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) },
504 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) },
505 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) },
506 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) },
507 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) },
508 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) },
509 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) },
510 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) },
511 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) },
512 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) },
513 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) },
514 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) },
515 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) },
516 { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) },
517 { USB_DEVICE(OCT_VID, OCT_US101_PID) },
518 { USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID),
519 .driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk },
520 { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID),
521 .driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk },
522 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) },
523 { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) },
524 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) },
525 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) },
526 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) },
527 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) },
528 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) },
529 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) },
530 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) },
531 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) },
532 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) },
533 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) },
534 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) },
535 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) },
536 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) },
537 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) },
538 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) },
539 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) },
540 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) },
541 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) },
542 { USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) },
543 { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) },
544 { USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) },
545 { USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) },
546 { USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) },
547 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) },
548 { USB_DEVICE(FTDI_VID, FTDI_IBS_US485_PID) },
549 { USB_DEVICE(FTDI_VID, FTDI_IBS_PICPRO_PID) },
550 { USB_DEVICE(FTDI_VID, FTDI_IBS_PCMCIA_PID) },
551 { USB_DEVICE(FTDI_VID, FTDI_IBS_PK1_PID) },
552 { USB_DEVICE(FTDI_VID, FTDI_IBS_RS232MON_PID) },
553 { USB_DEVICE(FTDI_VID, FTDI_IBS_APP70_PID) },
554 { USB_DEVICE(FTDI_VID, FTDI_IBS_PEDO_PID) },
555 { USB_DEVICE(FTDI_VID, FTDI_IBS_PROD_PID) },
556 /*
557 * Due to many user requests for multiple ELV devices we enable
558 * them by default.
559 */
560 { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) },
561 { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) },
562 { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) },
563 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) },
564 { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) },
565 { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) },
566 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) },
567 { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) },
568 { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) },
569 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) },
570 { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) },
571 { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) },
572 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) },
573 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) },
574 { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) },
575 { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) },
576 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) },
577 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) },
578 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1010PC_PID) },
579 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) },
580 { USB_DEVICE(FTDI_VID, FTDI_ELV_HS485_PID) },
581 { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) },
582 { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) },
583 { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) },
584 { USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) },
585 { USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) },
586 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) },
587 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) },
588 { USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) },
589 { USB_DEVICE(FTDI_VID, FTDI_CCSLOAD_N_GO_3_PID) },
590 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU64_4_PID) },
591 { USB_DEVICE(FTDI_VID, FTDI_CCSPRIME8_5_PID) },
592 { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) },
593 { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) },
594 { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) },
595 { USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) },
596 { USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) },
597 { USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) },
598 { USB_DEVICE(FTDI_VID, FTDI_OCEANIC_PID) },
599 { USB_DEVICE(TTI_VID, TTI_QL355P_PID) },
600 { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) },
601 { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) },
602 { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) },
603 { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) },
604 { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) },
605 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) },
606 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) },
607 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) },
608 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) },
609 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) },
610 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) },
611 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) },
612 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) },
613 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) },
614 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) },
615 { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
616 { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) },
617 { USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) },
618 { USB_DEVICE(FTDI_VID, FTDI_MHAM_YS_PID) },
619 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) },
620 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) },
621 { USB_DEVICE(FTDI_VID, FTDI_MHAM_IC_PID) },
622 { USB_DEVICE(FTDI_VID, FTDI_MHAM_DB9_PID) },
623 { USB_DEVICE(FTDI_VID, FTDI_MHAM_RS232_PID) },
624 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y9_PID) },
625 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) },
626 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) },
627 { USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) },
628 { USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) },
629 { USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) },
630 { USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) },
631 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) },
632 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) },
633 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) },
634 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HRC_PID) },
635 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16IC_PID) },
636 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) },
637 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) },
638 { USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) },
639 { USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) },
640 { USB_DEVICE(FTDI_VID, FTDI_ECLO_COM_1WIRE_PID) },
641 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) },
642 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) },
643 { USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) },
644 { USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) },
645 { USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) },
646 { USB_DEVICE(ICOM_ID1_VID, ICOM_ID1_PID) },
647 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_TMU_PID) },
648 { USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) },
649 { USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) },
650 { USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) },
651 { USB_DEVICE(TESTO_VID, TESTO_USB_INTERFACE_PID) },
652 { USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) },
653 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) },
654 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) },
655 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) },
656 { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) },
657 { USB_DEVICE(FTDI_VID, FTDI_NDI_HUC_PID),
658 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
659 { USB_DEVICE(FTDI_VID, FTDI_NDI_SPECTRA_SCU_PID),
660 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
661 { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_2_PID),
662 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
663 { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_3_PID),
664 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
665 { USB_DEVICE(FTDI_VID, FTDI_NDI_AURORA_SCU_PID),
666 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
667 { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
668 { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) },
669 { USB_DEVICE(FTDI_VID, FTDI_PHI_FISCO_PID) },
670 { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) },
671 { USB_DEVICE(FTDI_VID, FTDI_ELSTER_UNICOM_PID) },
672 { USB_DEVICE(FTDI_VID, FTDI_PROPOX_JTAGCABLEII_PID) },
673 { USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID),
674 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
675 { USB_DEVICE(FIC_VID, FIC_NEO1973_DEBUG_PID),
676 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
677 { USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID),
678 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
679 { USB_DEVICE(FTDI_VID, LMI_LM3S_DEVEL_BOARD_PID),
680 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
681 { USB_DEVICE(FTDI_VID, LMI_LM3S_EVAL_BOARD_PID),
682 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
683 { USB_DEVICE(FTDI_VID, FTDI_TURTELIZER_PID),
684 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
685 { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
686 { USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) },
687 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO4x4_PID) },
688 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DGQG_PID) },
689 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DUSB_PID) },
690 { USB_DEVICE(ALTI2_VID, ALTI2_N3_PID) },
691 { USB_DEVICE(FTDI_VID, DIEBOLD_BCS_SE923_PID) },
692 { USB_DEVICE(ATMEL_VID, STK541_PID) },
693 { USB_DEVICE(DE_VID, STB_PID) },
694 { USB_DEVICE(DE_VID, WHT_PID) },
695 { USB_DEVICE(ADI_VID, ADI_GNICE_PID),
696 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
697 { USB_DEVICE(JETI_VID, JETI_SPC1201_PID) },
698 { USB_DEVICE(MARVELL_VID, MARVELL_SHEEVAPLUG_PID),
699 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
700 { USB_DEVICE(LARSENBRUSGAARD_VID, LB_ALTITRACK_PID) },
701 { USB_DEVICE(GN_OTOMETRICS_VID, AURICAL_USB_PID) },
702 { }, /* Optional parameter entry */
703 { } /* Terminating entry */
704 };
705
706 MODULE_DEVICE_TABLE(usb, id_table_combined);
707
708 static struct usb_driver ftdi_driver = {
709 .name = "ftdi_sio",
710 .probe = usb_serial_probe,
711 .disconnect = usb_serial_disconnect,
712 .id_table = id_table_combined,
713 .no_dynamic_id = 1,
714 };
715
716 static const char *ftdi_chip_name[] = {
717 [SIO] = "SIO", /* the serial part of FT8U100AX */
718 [FT8U232AM] = "FT8U232AM",
719 [FT232BM] = "FT232BM",
720 [FT2232C] = "FT2232C",
721 [FT232RL] = "FT232RL",
722 [FT2232H] = "FT2232H",
723 [FT4232H] = "FT4232H"
724 };
725
726
727 /* Constants for read urb and write urb */
728 #define BUFSZ 512
729
730 /* rx_flags */
731 #define THROTTLED 0x01
732 #define ACTUALLY_THROTTLED 0x02
733
734 /* Used for TIOCMIWAIT */
735 #define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD)
736 #define FTDI_STATUS_B1_MASK (FTDI_RS_BI)
737 /* End TIOCMIWAIT */
738
739 #define FTDI_IMPL_ASYNC_FLAGS = (ASYNC_SPD_HI | ASYNC_SPD_VHI \
740 | ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP)
741
742 /* function prototypes for a FTDI serial converter */
743 static int ftdi_sio_probe(struct usb_serial *serial,
744 const struct usb_device_id *id);
745 static int ftdi_sio_port_probe(struct usb_serial_port *port);
746 static int ftdi_sio_port_remove(struct usb_serial_port *port);
747 static int ftdi_open(struct tty_struct *tty,
748 struct usb_serial_port *port, struct file *filp);
749 static void ftdi_close(struct usb_serial_port *port);
750 static void ftdi_dtr_rts(struct usb_serial_port *port, int on);
751 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
752 const unsigned char *buf, int count);
753 static int ftdi_write_room(struct tty_struct *tty);
754 static int ftdi_chars_in_buffer(struct tty_struct *tty);
755 static void ftdi_write_bulk_callback(struct urb *urb);
756 static void ftdi_read_bulk_callback(struct urb *urb);
757 static void ftdi_process_read(struct work_struct *work);
758 static void ftdi_set_termios(struct tty_struct *tty,
759 struct usb_serial_port *port, struct ktermios *old);
760 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file);
761 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
762 unsigned int set, unsigned int clear);
763 static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
764 unsigned int cmd, unsigned long arg);
765 static void ftdi_break_ctl(struct tty_struct *tty, int break_state);
766 static void ftdi_throttle(struct tty_struct *tty);
767 static void ftdi_unthrottle(struct tty_struct *tty);
768
769 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base);
770 static unsigned short int ftdi_232am_baud_to_divisor(int baud);
771 static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base);
772 static __u32 ftdi_232bm_baud_to_divisor(int baud);
773 static __u32 ftdi_2232h_baud_base_to_divisor(int baud, int base);
774 static __u32 ftdi_2232h_baud_to_divisor(int baud);
775
776 static struct usb_serial_driver ftdi_sio_device = {
777 .driver = {
778 .owner = THIS_MODULE,
779 .name = "ftdi_sio",
780 },
781 .description = "FTDI USB Serial Device",
782 .usb_driver = &ftdi_driver ,
783 .id_table = id_table_combined,
784 .num_ports = 1,
785 .probe = ftdi_sio_probe,
786 .port_probe = ftdi_sio_port_probe,
787 .port_remove = ftdi_sio_port_remove,
788 .open = ftdi_open,
789 .close = ftdi_close,
790 .dtr_rts = ftdi_dtr_rts,
791 .throttle = ftdi_throttle,
792 .unthrottle = ftdi_unthrottle,
793 .write = ftdi_write,
794 .write_room = ftdi_write_room,
795 .chars_in_buffer = ftdi_chars_in_buffer,
796 .read_bulk_callback = ftdi_read_bulk_callback,
797 .write_bulk_callback = ftdi_write_bulk_callback,
798 .tiocmget = ftdi_tiocmget,
799 .tiocmset = ftdi_tiocmset,
800 .ioctl = ftdi_ioctl,
801 .set_termios = ftdi_set_termios,
802 .break_ctl = ftdi_break_ctl,
803 };
804
805
806 #define WDR_TIMEOUT 5000 /* default urb timeout */
807 #define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */
808
809 /* High and low are for DTR, RTS etc etc */
810 #define HIGH 1
811 #define LOW 0
812
813 /* number of outstanding urbs to prevent userspace DoS from happening */
814 #define URB_UPPER_LIMIT 42
815
816 /*
817 * ***************************************************************************
818 * Utility functions
819 * ***************************************************************************
820 */
821
822 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base)
823 {
824 unsigned short int divisor;
825 /* divisor shifted 3 bits to the left */
826 int divisor3 = base / 2 / baud;
827 if ((divisor3 & 0x7) == 7)
828 divisor3++; /* round x.7/8 up to x+1 */
829 divisor = divisor3 >> 3;
830 divisor3 &= 0x7;
831 if (divisor3 == 1)
832 divisor |= 0xc000;
833 else if (divisor3 >= 4)
834 divisor |= 0x4000;
835 else if (divisor3 != 0)
836 divisor |= 0x8000;
837 else if (divisor == 1)
838 divisor = 0; /* special case for maximum baud rate */
839 return divisor;
840 }
841
842 static unsigned short int ftdi_232am_baud_to_divisor(int baud)
843 {
844 return ftdi_232am_baud_base_to_divisor(baud, 48000000);
845 }
846
847 static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base)
848 {
849 static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
850 __u32 divisor;
851 /* divisor shifted 3 bits to the left */
852 int divisor3 = base / 2 / baud;
853 divisor = divisor3 >> 3;
854 divisor |= (__u32)divfrac[divisor3 & 0x7] << 14;
855 /* Deal with special cases for highest baud rates. */
856 if (divisor == 1)
857 divisor = 0;
858 else if (divisor == 0x4001)
859 divisor = 1;
860 return divisor;
861 }
862
863 static __u32 ftdi_232bm_baud_to_divisor(int baud)
864 {
865 return ftdi_232bm_baud_base_to_divisor(baud, 48000000);
866 }
867
868 static __u32 ftdi_2232h_baud_base_to_divisor(int baud, int base)
869 {
870 static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
871 __u32 divisor;
872 int divisor3;
873
874 /* hi-speed baud rate is 10-bit sampling instead of 16-bit */
875 divisor3 = (base / 10 / baud) * 8;
876
877 divisor = divisor3 >> 3;
878 divisor |= (__u32)divfrac[divisor3 & 0x7] << 14;
879 /* Deal with special cases for highest baud rates. */
880 if (divisor == 1)
881 divisor = 0;
882 else if (divisor == 0x4001)
883 divisor = 1;
884 /*
885 * Set this bit to turn off a divide by 2.5 on baud rate generator
886 * This enables baud rates up to 12Mbaud but cannot reach below 1200
887 * baud with this bit set
888 */
889 divisor |= 0x00020000;
890 return divisor;
891 }
892
893 static __u32 ftdi_2232h_baud_to_divisor(int baud)
894 {
895 return ftdi_2232h_baud_base_to_divisor(baud, 120000000);
896 }
897
898 #define set_mctrl(port, set) update_mctrl((port), (set), 0)
899 #define clear_mctrl(port, clear) update_mctrl((port), 0, (clear))
900
901 static int update_mctrl(struct usb_serial_port *port, unsigned int set,
902 unsigned int clear)
903 {
904 struct ftdi_private *priv = usb_get_serial_port_data(port);
905 char *buf;
906 unsigned urb_value;
907 int rv;
908
909 if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
910 dbg("%s - DTR|RTS not being set|cleared", __func__);
911 return 0; /* no change */
912 }
913
914 buf = kmalloc(1, GFP_NOIO);
915 if (!buf)
916 return -ENOMEM;
917
918 clear &= ~set; /* 'set' takes precedence over 'clear' */
919 urb_value = 0;
920 if (clear & TIOCM_DTR)
921 urb_value |= FTDI_SIO_SET_DTR_LOW;
922 if (clear & TIOCM_RTS)
923 urb_value |= FTDI_SIO_SET_RTS_LOW;
924 if (set & TIOCM_DTR)
925 urb_value |= FTDI_SIO_SET_DTR_HIGH;
926 if (set & TIOCM_RTS)
927 urb_value |= FTDI_SIO_SET_RTS_HIGH;
928 rv = usb_control_msg(port->serial->dev,
929 usb_sndctrlpipe(port->serial->dev, 0),
930 FTDI_SIO_SET_MODEM_CTRL_REQUEST,
931 FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
932 urb_value, priv->interface,
933 buf, 0, WDR_TIMEOUT);
934
935 kfree(buf);
936 if (rv < 0) {
937 dbg("%s Error from MODEM_CTRL urb: DTR %s, RTS %s",
938 __func__,
939 (set & TIOCM_DTR) ? "HIGH" :
940 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
941 (set & TIOCM_RTS) ? "HIGH" :
942 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
943 } else {
944 dbg("%s - DTR %s, RTS %s", __func__,
945 (set & TIOCM_DTR) ? "HIGH" :
946 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
947 (set & TIOCM_RTS) ? "HIGH" :
948 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
949 /* FIXME: locking on last_dtr_rts */
950 priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set;
951 }
952 return rv;
953 }
954
955
956 static __u32 get_ftdi_divisor(struct tty_struct *tty,
957 struct usb_serial_port *port)
958 { /* get_ftdi_divisor */
959 struct ftdi_private *priv = usb_get_serial_port_data(port);
960 __u32 div_value = 0;
961 int div_okay = 1;
962 int baud;
963
964 /*
965 * The logic involved in setting the baudrate can be cleanly split into
966 * 3 steps.
967 * 1. Standard baud rates are set in tty->termios->c_cflag
968 * 2. If these are not enough, you can set any speed using alt_speed as
969 * follows:
970 * - set tty->termios->c_cflag speed to B38400
971 * - set your real speed in tty->alt_speed; it gets ignored when
972 * alt_speed==0, (or)
973 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
974 * follows:
975 * flags & ASYNC_SPD_MASK == ASYNC_SPD_[HI, VHI, SHI, WARP],
976 * this just sets alt_speed to (HI: 57600, VHI: 115200,
977 * SHI: 230400, WARP: 460800)
978 * ** Steps 1, 2 are done courtesy of tty_get_baud_rate
979 * 3. You can also set baud rate by setting custom divisor as follows
980 * - set tty->termios->c_cflag speed to B38400
981 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
982 * follows:
983 * o flags & ASYNC_SPD_MASK == ASYNC_SPD_CUST
984 * o custom_divisor set to baud_base / your_new_baudrate
985 * ** Step 3 is done courtesy of code borrowed from serial.c
986 * I should really spend some time and separate + move this common
987 * code to serial.c, it is replicated in nearly every serial driver
988 * you see.
989 */
990
991 /* 1. Get the baud rate from the tty settings, this observes
992 alt_speed hack */
993
994 baud = tty_get_baud_rate(tty);
995 dbg("%s - tty_get_baud_rate reports speed %d", __func__, baud);
996
997 /* 2. Observe async-compatible custom_divisor hack, update baudrate
998 if needed */
999
1000 if (baud == 38400 &&
1001 ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
1002 (priv->custom_divisor)) {
1003 baud = priv->baud_base / priv->custom_divisor;
1004 dbg("%s - custom divisor %d sets baud rate to %d",
1005 __func__, priv->custom_divisor, baud);
1006 }
1007
1008 /* 3. Convert baudrate to device-specific divisor */
1009
1010 if (!baud)
1011 baud = 9600;
1012 switch (priv->chip_type) {
1013 case SIO: /* SIO chip */
1014 switch (baud) {
1015 case 300: div_value = ftdi_sio_b300; break;
1016 case 600: div_value = ftdi_sio_b600; break;
1017 case 1200: div_value = ftdi_sio_b1200; break;
1018 case 2400: div_value = ftdi_sio_b2400; break;
1019 case 4800: div_value = ftdi_sio_b4800; break;
1020 case 9600: div_value = ftdi_sio_b9600; break;
1021 case 19200: div_value = ftdi_sio_b19200; break;
1022 case 38400: div_value = ftdi_sio_b38400; break;
1023 case 57600: div_value = ftdi_sio_b57600; break;
1024 case 115200: div_value = ftdi_sio_b115200; break;
1025 } /* baud */
1026 if (div_value == 0) {
1027 dbg("%s - Baudrate (%d) requested is not supported",
1028 __func__, baud);
1029 div_value = ftdi_sio_b9600;
1030 baud = 9600;
1031 div_okay = 0;
1032 }
1033 break;
1034 case FT8U232AM: /* 8U232AM chip */
1035 if (baud <= 3000000) {
1036 div_value = ftdi_232am_baud_to_divisor(baud);
1037 } else {
1038 dbg("%s - Baud rate too high!", __func__);
1039 baud = 9600;
1040 div_value = ftdi_232am_baud_to_divisor(9600);
1041 div_okay = 0;
1042 }
1043 break;
1044 case FT232BM: /* FT232BM chip */
1045 case FT2232C: /* FT2232C chip */
1046 case FT232RL:
1047 if (baud <= 3000000) {
1048 __u16 product_id = le16_to_cpu(
1049 port->serial->dev->descriptor.idProduct);
1050 if (((FTDI_NDI_HUC_PID == product_id) ||
1051 (FTDI_NDI_SPECTRA_SCU_PID == product_id) ||
1052 (FTDI_NDI_FUTURE_2_PID == product_id) ||
1053 (FTDI_NDI_FUTURE_3_PID == product_id) ||
1054 (FTDI_NDI_AURORA_SCU_PID == product_id)) &&
1055 (baud == 19200)) {
1056 baud = 1200000;
1057 }
1058 div_value = ftdi_232bm_baud_to_divisor(baud);
1059 } else {
1060 dbg("%s - Baud rate too high!", __func__);
1061 div_value = ftdi_232bm_baud_to_divisor(9600);
1062 div_okay = 0;
1063 baud = 9600;
1064 }
1065 break;
1066 case FT2232H: /* FT2232H chip */
1067 case FT4232H: /* FT4232H chip */
1068 if ((baud <= 12000000) & (baud >= 1200)) {
1069 div_value = ftdi_2232h_baud_to_divisor(baud);
1070 } else if (baud < 1200) {
1071 div_value = ftdi_232bm_baud_to_divisor(baud);
1072 } else {
1073 dbg("%s - Baud rate too high!", __func__);
1074 div_value = ftdi_232bm_baud_to_divisor(9600);
1075 div_okay = 0;
1076 baud = 9600;
1077 }
1078 break;
1079 } /* priv->chip_type */
1080
1081 if (div_okay) {
1082 dbg("%s - Baud rate set to %d (divisor 0x%lX) on chip %s",
1083 __func__, baud, (unsigned long)div_value,
1084 ftdi_chip_name[priv->chip_type]);
1085 }
1086
1087 tty_encode_baud_rate(tty, baud, baud);
1088 return div_value;
1089 }
1090
1091 static int change_speed(struct tty_struct *tty, struct usb_serial_port *port)
1092 {
1093 struct ftdi_private *priv = usb_get_serial_port_data(port);
1094 char *buf;
1095 __u16 urb_value;
1096 __u16 urb_index;
1097 __u32 urb_index_value;
1098 int rv;
1099
1100 buf = kmalloc(1, GFP_NOIO);
1101 if (!buf)
1102 return -ENOMEM;
1103
1104 urb_index_value = get_ftdi_divisor(tty, port);
1105 urb_value = (__u16)urb_index_value;
1106 urb_index = (__u16)(urb_index_value >> 16);
1107 if (priv->interface) { /* FT2232C */
1108 urb_index = (__u16)((urb_index << 8) | priv->interface);
1109 }
1110
1111 rv = usb_control_msg(port->serial->dev,
1112 usb_sndctrlpipe(port->serial->dev, 0),
1113 FTDI_SIO_SET_BAUDRATE_REQUEST,
1114 FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
1115 urb_value, urb_index,
1116 buf, 0, WDR_SHORT_TIMEOUT);
1117
1118 kfree(buf);
1119 return rv;
1120 }
1121
1122 static int write_latency_timer(struct usb_serial_port *port)
1123 {
1124 struct ftdi_private *priv = usb_get_serial_port_data(port);
1125 struct usb_device *udev = port->serial->dev;
1126 char buf[1];
1127 int rv = 0;
1128 int l = priv->latency;
1129
1130 if (priv->flags & ASYNC_LOW_LATENCY)
1131 l = 1;
1132
1133 dbg("%s: setting latency timer = %i", __func__, l);
1134
1135 rv = usb_control_msg(udev,
1136 usb_sndctrlpipe(udev, 0),
1137 FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
1138 FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
1139 l, priv->interface,
1140 buf, 0, WDR_TIMEOUT);
1141
1142 if (rv < 0)
1143 dev_err(&port->dev, "Unable to write latency timer: %i\n", rv);
1144 return rv;
1145 }
1146
1147 static int read_latency_timer(struct usb_serial_port *port)
1148 {
1149 struct ftdi_private *priv = usb_get_serial_port_data(port);
1150 struct usb_device *udev = port->serial->dev;
1151 unsigned short latency = 0;
1152 int rv = 0;
1153
1154
1155 dbg("%s", __func__);
1156
1157 rv = usb_control_msg(udev,
1158 usb_rcvctrlpipe(udev, 0),
1159 FTDI_SIO_GET_LATENCY_TIMER_REQUEST,
1160 FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE,
1161 0, priv->interface,
1162 (char *) &latency, 1, WDR_TIMEOUT);
1163
1164 if (rv < 0) {
1165 dev_err(&port->dev, "Unable to read latency timer: %i\n", rv);
1166 return -EIO;
1167 }
1168 return latency;
1169 }
1170
1171 static int get_serial_info(struct usb_serial_port *port,
1172 struct serial_struct __user *retinfo)
1173 {
1174 struct ftdi_private *priv = usb_get_serial_port_data(port);
1175 struct serial_struct tmp;
1176
1177 if (!retinfo)
1178 return -EFAULT;
1179 memset(&tmp, 0, sizeof(tmp));
1180 tmp.flags = priv->flags;
1181 tmp.baud_base = priv->baud_base;
1182 tmp.custom_divisor = priv->custom_divisor;
1183 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1184 return -EFAULT;
1185 return 0;
1186 } /* get_serial_info */
1187
1188
1189 static int set_serial_info(struct tty_struct *tty,
1190 struct usb_serial_port *port, struct serial_struct __user *newinfo)
1191 { /* set_serial_info */
1192 struct ftdi_private *priv = usb_get_serial_port_data(port);
1193 struct serial_struct new_serial;
1194 struct ftdi_private old_priv;
1195
1196 if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
1197 return -EFAULT;
1198
1199 lock_kernel();
1200 old_priv = *priv;
1201
1202 /* Do error checking and permission checking */
1203
1204 if (!capable(CAP_SYS_ADMIN)) {
1205 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
1206 (priv->flags & ~ASYNC_USR_MASK))) {
1207 unlock_kernel();
1208 return -EPERM;
1209 }
1210 priv->flags = ((priv->flags & ~ASYNC_USR_MASK) |
1211 (new_serial.flags & ASYNC_USR_MASK));
1212 priv->custom_divisor = new_serial.custom_divisor;
1213 goto check_and_exit;
1214 }
1215
1216 if ((new_serial.baud_base != priv->baud_base) &&
1217 (new_serial.baud_base < 9600)) {
1218 unlock_kernel();
1219 return -EINVAL;
1220 }
1221
1222 /* Make the changes - these are privileged changes! */
1223
1224 priv->flags = ((priv->flags & ~ASYNC_FLAGS) |
1225 (new_serial.flags & ASYNC_FLAGS));
1226 priv->custom_divisor = new_serial.custom_divisor;
1227
1228 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1229 write_latency_timer(port);
1230
1231 check_and_exit:
1232 if ((old_priv.flags & ASYNC_SPD_MASK) !=
1233 (priv->flags & ASYNC_SPD_MASK)) {
1234 if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
1235 tty->alt_speed = 57600;
1236 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
1237 tty->alt_speed = 115200;
1238 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
1239 tty->alt_speed = 230400;
1240 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
1241 tty->alt_speed = 460800;
1242 else
1243 tty->alt_speed = 0;
1244 }
1245 if (((old_priv.flags & ASYNC_SPD_MASK) !=
1246 (priv->flags & ASYNC_SPD_MASK)) ||
1247 (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
1248 (old_priv.custom_divisor != priv->custom_divisor))) {
1249 unlock_kernel();
1250 change_speed(tty, port);
1251 }
1252 else
1253 unlock_kernel();
1254 return 0;
1255
1256 } /* set_serial_info */
1257
1258
1259 /* Determine type of FTDI chip based on USB config and descriptor. */
1260 static void ftdi_determine_type(struct usb_serial_port *port)
1261 {
1262 struct ftdi_private *priv = usb_get_serial_port_data(port);
1263 struct usb_serial *serial = port->serial;
1264 struct usb_device *udev = serial->dev;
1265 unsigned version;
1266 unsigned interfaces;
1267
1268 /* Assume it is not the original SIO device for now. */
1269 priv->baud_base = 48000000 / 2;
1270 priv->write_offset = 0;
1271
1272 version = le16_to_cpu(udev->descriptor.bcdDevice);
1273 interfaces = udev->actconfig->desc.bNumInterfaces;
1274 dbg("%s: bcdDevice = 0x%x, bNumInterfaces = %u", __func__,
1275 version, interfaces);
1276 if (interfaces > 1) {
1277 int inter;
1278
1279 /* Multiple interfaces.*/
1280 if (version == 0x0800) {
1281 priv->chip_type = FT4232H;
1282 /* Hi-speed - baud clock runs at 120MHz */
1283 priv->baud_base = 120000000 / 2;
1284 } else if (version == 0x0700) {
1285 priv->chip_type = FT2232H;
1286 /* Hi-speed - baud clock runs at 120MHz */
1287 priv->baud_base = 120000000 / 2;
1288 } else
1289 priv->chip_type = FT2232C;
1290
1291 /* Determine interface code. */
1292 inter = serial->interface->altsetting->desc.bInterfaceNumber;
1293 if (inter == 0) {
1294 priv->interface = INTERFACE_A;
1295 } else if (inter == 1) {
1296 priv->interface = INTERFACE_B;
1297 } else if (inter == 2) {
1298 priv->interface = INTERFACE_C;
1299 } else if (inter == 3) {
1300 priv->interface = INTERFACE_D;
1301 }
1302 /* BM-type devices have a bug where bcdDevice gets set
1303 * to 0x200 when iSerialNumber is 0. */
1304 if (version < 0x500) {
1305 dbg("%s: something fishy - bcdDevice too low for multi-interface device",
1306 __func__);
1307 }
1308 } else if (version < 0x200) {
1309 /* Old device. Assume its the original SIO. */
1310 priv->chip_type = SIO;
1311 priv->baud_base = 12000000 / 16;
1312 priv->write_offset = 1;
1313 } else if (version < 0x400) {
1314 /* Assume its an FT8U232AM (or FT8U245AM) */
1315 /* (It might be a BM because of the iSerialNumber bug,
1316 * but it will still work as an AM device.) */
1317 priv->chip_type = FT8U232AM;
1318 } else if (version < 0x600) {
1319 /* Assume its an FT232BM (or FT245BM) */
1320 priv->chip_type = FT232BM;
1321 } else {
1322 /* Assume its an FT232R */
1323 priv->chip_type = FT232RL;
1324 }
1325 dev_info(&udev->dev, "Detected %s\n", ftdi_chip_name[priv->chip_type]);
1326 }
1327
1328
1329 /* Determine the maximum packet size for the device. This depends on the chip
1330 * type and the USB host capabilities. The value should be obtained from the
1331 * device descriptor as the chip will use the appropriate values for the host.*/
1332 static void ftdi_set_max_packet_size(struct usb_serial_port *port)
1333 {
1334 struct ftdi_private *priv = usb_get_serial_port_data(port);
1335 struct usb_serial *serial = port->serial;
1336 struct usb_device *udev = serial->dev;
1337
1338 struct usb_interface *interface = serial->interface;
1339 struct usb_endpoint_descriptor *ep_desc = &interface->cur_altsetting->endpoint[1].desc;
1340
1341 unsigned num_endpoints;
1342 int i = 0;
1343
1344 num_endpoints = interface->cur_altsetting->desc.bNumEndpoints;
1345 dev_info(&udev->dev, "Number of endpoints %d\n", num_endpoints);
1346
1347 /* NOTE: some customers have programmed FT232R/FT245R devices
1348 * with an endpoint size of 0 - not good. In this case, we
1349 * want to override the endpoint descriptor setting and use a
1350 * value of 64 for wMaxPacketSize */
1351 for (i = 0; i < num_endpoints; i++) {
1352 dev_info(&udev->dev, "Endpoint %d MaxPacketSize %d\n", i+1,
1353 interface->cur_altsetting->endpoint[i].desc.wMaxPacketSize);
1354 ep_desc = &interface->cur_altsetting->endpoint[i].desc;
1355 if (ep_desc->wMaxPacketSize == 0) {
1356 ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
1357 dev_info(&udev->dev, "Overriding wMaxPacketSize on endpoint %d\n", i);
1358 }
1359 }
1360
1361 /* set max packet size based on descriptor */
1362 priv->max_packet_size = ep_desc->wMaxPacketSize;
1363
1364 dev_info(&udev->dev, "Setting MaxPacketSize %d\n", priv->max_packet_size);
1365 }
1366
1367
1368 /*
1369 * ***************************************************************************
1370 * Sysfs Attribute
1371 * ***************************************************************************
1372 */
1373
1374 static ssize_t show_latency_timer(struct device *dev,
1375 struct device_attribute *attr, char *buf)
1376 {
1377 struct usb_serial_port *port = to_usb_serial_port(dev);
1378 struct ftdi_private *priv = usb_get_serial_port_data(port);
1379 if (priv->flags & ASYNC_LOW_LATENCY)
1380 return sprintf(buf, "1\n");
1381 else
1382 return sprintf(buf, "%i\n", priv->latency);
1383 }
1384
1385
1386 /* Write a new value of the latency timer, in units of milliseconds. */
1387 static ssize_t store_latency_timer(struct device *dev,
1388 struct device_attribute *attr, const char *valbuf,
1389 size_t count)
1390 {
1391 struct usb_serial_port *port = to_usb_serial_port(dev);
1392 struct ftdi_private *priv = usb_get_serial_port_data(port);
1393 int v = simple_strtoul(valbuf, NULL, 10);
1394 int rv = 0;
1395
1396 priv->latency = v;
1397 rv = write_latency_timer(port);
1398 if (rv < 0)
1399 return -EIO;
1400 return count;
1401 }
1402
1403 /* Write an event character directly to the FTDI register. The ASCII
1404 value is in the low 8 bits, with the enable bit in the 9th bit. */
1405 static ssize_t store_event_char(struct device *dev,
1406 struct device_attribute *attr, const char *valbuf, size_t count)
1407 {
1408 struct usb_serial_port *port = to_usb_serial_port(dev);
1409 struct ftdi_private *priv = usb_get_serial_port_data(port);
1410 struct usb_device *udev = port->serial->dev;
1411 char buf[1];
1412 int v = simple_strtoul(valbuf, NULL, 10);
1413 int rv = 0;
1414
1415 dbg("%s: setting event char = %i", __func__, v);
1416
1417 rv = usb_control_msg(udev,
1418 usb_sndctrlpipe(udev, 0),
1419 FTDI_SIO_SET_EVENT_CHAR_REQUEST,
1420 FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE,
1421 v, priv->interface,
1422 buf, 0, WDR_TIMEOUT);
1423
1424 if (rv < 0) {
1425 dbg("Unable to write event character: %i", rv);
1426 return -EIO;
1427 }
1428
1429 return count;
1430 }
1431
1432 static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer,
1433 store_latency_timer);
1434 static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char);
1435
1436 static int create_sysfs_attrs(struct usb_serial_port *port)
1437 {
1438 struct ftdi_private *priv = usb_get_serial_port_data(port);
1439 int retval = 0;
1440
1441 dbg("%s", __func__);
1442
1443 /* XXX I've no idea if the original SIO supports the event_char
1444 * sysfs parameter, so I'm playing it safe. */
1445 if (priv->chip_type != SIO) {
1446 dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]);
1447 retval = device_create_file(&port->dev, &dev_attr_event_char);
1448 if ((!retval) &&
1449 (priv->chip_type == FT232BM ||
1450 priv->chip_type == FT2232C ||
1451 priv->chip_type == FT232RL ||
1452 priv->chip_type == FT2232H ||
1453 priv->chip_type == FT4232H)) {
1454 retval = device_create_file(&port->dev,
1455 &dev_attr_latency_timer);
1456 }
1457 }
1458 return retval;
1459 }
1460
1461 static void remove_sysfs_attrs(struct usb_serial_port *port)
1462 {
1463 struct ftdi_private *priv = usb_get_serial_port_data(port);
1464
1465 dbg("%s", __func__);
1466
1467 /* XXX see create_sysfs_attrs */
1468 if (priv->chip_type != SIO) {
1469 device_remove_file(&port->dev, &dev_attr_event_char);
1470 if (priv->chip_type == FT232BM ||
1471 priv->chip_type == FT2232C ||
1472 priv->chip_type == FT232RL ||
1473 priv->chip_type == FT2232H ||
1474 priv->chip_type == FT4232H) {
1475 device_remove_file(&port->dev, &dev_attr_latency_timer);
1476 }
1477 }
1478
1479 }
1480
1481 /*
1482 * ***************************************************************************
1483 * FTDI driver specific functions
1484 * ***************************************************************************
1485 */
1486
1487 /* Probe function to check for special devices */
1488 static int ftdi_sio_probe(struct usb_serial *serial,
1489 const struct usb_device_id *id)
1490 {
1491 struct ftdi_sio_quirk *quirk =
1492 (struct ftdi_sio_quirk *)id->driver_info;
1493
1494 if (quirk && quirk->probe) {
1495 int ret = quirk->probe(serial);
1496 if (ret != 0)
1497 return ret;
1498 }
1499
1500 usb_set_serial_data(serial, (void *)id->driver_info);
1501
1502 return 0;
1503 }
1504
1505 static int ftdi_sio_port_probe(struct usb_serial_port *port)
1506 {
1507 struct ftdi_private *priv;
1508 struct ftdi_sio_quirk *quirk = usb_get_serial_data(port->serial);
1509
1510
1511 dbg("%s", __func__);
1512
1513 priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL);
1514 if (!priv) {
1515 dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", __func__,
1516 sizeof(struct ftdi_private));
1517 return -ENOMEM;
1518 }
1519
1520 kref_init(&priv->kref);
1521 spin_lock_init(&priv->rx_lock);
1522 spin_lock_init(&priv->tx_lock);
1523 init_waitqueue_head(&priv->delta_msr_wait);
1524 /* This will push the characters through immediately rather
1525 than queue a task to deliver them */
1526 priv->flags = ASYNC_LOW_LATENCY;
1527
1528 if (quirk && quirk->port_probe)
1529 quirk->port_probe(priv);
1530
1531 /* Increase the size of read buffers */
1532 kfree(port->bulk_in_buffer);
1533 port->bulk_in_buffer = kmalloc(BUFSZ, GFP_KERNEL);
1534 if (!port->bulk_in_buffer) {
1535 kfree(priv);
1536 return -ENOMEM;
1537 }
1538 if (port->read_urb) {
1539 port->read_urb->transfer_buffer = port->bulk_in_buffer;
1540 port->read_urb->transfer_buffer_length = BUFSZ;
1541 }
1542
1543 INIT_DELAYED_WORK(&priv->rx_work, ftdi_process_read);
1544 priv->port = port;
1545
1546 /* Free port's existing write urb and transfer buffer. */
1547 if (port->write_urb) {
1548 usb_free_urb(port->write_urb);
1549 port->write_urb = NULL;
1550 }
1551 kfree(port->bulk_out_buffer);
1552 port->bulk_out_buffer = NULL;
1553
1554 usb_set_serial_port_data(port, priv);
1555
1556 ftdi_determine_type(port);
1557 ftdi_set_max_packet_size(port);
1558 read_latency_timer(port);
1559 create_sysfs_attrs(port);
1560 return 0;
1561 }
1562
1563 /* Setup for the USB-UIRT device, which requires hardwired
1564 * baudrate (38400 gets mapped to 312500) */
1565 /* Called from usbserial:serial_probe */
1566 static void ftdi_USB_UIRT_setup(struct ftdi_private *priv)
1567 {
1568 dbg("%s", __func__);
1569
1570 priv->flags |= ASYNC_SPD_CUST;
1571 priv->custom_divisor = 77;
1572 priv->force_baud = 38400;
1573 } /* ftdi_USB_UIRT_setup */
1574
1575 /* Setup for the HE-TIRA1 device, which requires hardwired
1576 * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */
1577
1578 static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv)
1579 {
1580 dbg("%s", __func__);
1581
1582 priv->flags |= ASYNC_SPD_CUST;
1583 priv->custom_divisor = 240;
1584 priv->force_baud = 38400;
1585 priv->force_rtscts = 1;
1586 } /* ftdi_HE_TIRA1_setup */
1587
1588 /*
1589 * Module parameter to control latency timer for NDI FTDI-based USB devices.
1590 * If this value is not set in modprobe.conf.local its value will be set to 1ms.
1591 */
1592 static int ndi_latency_timer = 1;
1593
1594 /* Setup for the NDI FTDI-based USB devices, which requires hardwired
1595 * baudrate (19200 gets mapped to 1200000).
1596 *
1597 * Called from usbserial:serial_probe.
1598 */
1599 static int ftdi_NDI_device_setup(struct usb_serial *serial)
1600 {
1601 struct usb_device *udev = serial->dev;
1602 int latency = ndi_latency_timer;
1603 int rv = 0;
1604 char buf[1];
1605
1606 if (latency == 0)
1607 latency = 1;
1608 if (latency > 99)
1609 latency = 99;
1610
1611 dbg("%s setting NDI device latency to %d", __func__, latency);
1612 dev_info(&udev->dev, "NDI device with a latency value of %d", latency);
1613
1614 rv = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
1615 FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
1616 FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
1617 latency, 0, buf, 0, WDR_TIMEOUT);
1618 return 0;
1619 }
1620
1621 /*
1622 * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko
1623 * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from
1624 * userspace using openocd.
1625 */
1626 static int ftdi_jtag_probe(struct usb_serial *serial)
1627 {
1628 struct usb_device *udev = serial->dev;
1629 struct usb_interface *interface = serial->interface;
1630
1631 dbg("%s", __func__);
1632
1633 if (interface == udev->actconfig->interface[0]) {
1634 dev_info(&udev->dev,
1635 "Ignoring serial port reserved for JTAG\n");
1636 return -ENODEV;
1637 }
1638
1639 return 0;
1640 }
1641
1642 /*
1643 * The Matrix Orbital VK204-25-USB has an invalid IN endpoint.
1644 * We have to correct it if we want to read from it.
1645 */
1646 static int ftdi_mtxorb_hack_setup(struct usb_serial *serial)
1647 {
1648 struct usb_host_endpoint *ep = serial->dev->ep_in[1];
1649 struct usb_endpoint_descriptor *ep_desc = &ep->desc;
1650
1651 if (ep->enabled && ep_desc->wMaxPacketSize == 0) {
1652 ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
1653 dev_info(&serial->dev->dev,
1654 "Fixing invalid wMaxPacketSize on read pipe\n");
1655 }
1656
1657 return 0;
1658 }
1659
1660 static void ftdi_sio_priv_release(struct kref *k)
1661 {
1662 struct ftdi_private *priv = container_of(k, struct ftdi_private, kref);
1663
1664 kfree(priv);
1665 }
1666
1667 static int ftdi_sio_port_remove(struct usb_serial_port *port)
1668 {
1669 struct ftdi_private *priv = usb_get_serial_port_data(port);
1670
1671 dbg("%s", __func__);
1672
1673 remove_sysfs_attrs(port);
1674
1675 kref_put(&priv->kref, ftdi_sio_priv_release);
1676
1677 return 0;
1678 }
1679
1680 static int ftdi_open(struct tty_struct *tty,
1681 struct usb_serial_port *port, struct file *filp)
1682 { /* ftdi_open */
1683 struct usb_device *dev = port->serial->dev;
1684 struct ftdi_private *priv = usb_get_serial_port_data(port);
1685 unsigned long flags;
1686
1687 int result = 0;
1688 char buf[1]; /* Needed for the usb_control_msg I think */
1689
1690 dbg("%s", __func__);
1691
1692 spin_lock_irqsave(&priv->tx_lock, flags);
1693 priv->tx_bytes = 0;
1694 spin_unlock_irqrestore(&priv->tx_lock, flags);
1695 spin_lock_irqsave(&priv->rx_lock, flags);
1696 priv->rx_bytes = 0;
1697 spin_unlock_irqrestore(&priv->rx_lock, flags);
1698
1699 if (tty)
1700 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1701
1702 write_latency_timer(port);
1703
1704 /* No error checking for this (will get errors later anyway) */
1705 /* See ftdi_sio.h for description of what is reset */
1706 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1707 FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
1708 FTDI_SIO_RESET_SIO,
1709 priv->interface, buf, 0, WDR_TIMEOUT);
1710
1711 /* Termios defaults are set by usb_serial_init. We don't change
1712 port->tty->termios - this would lose speed settings, etc.
1713 This is same behaviour as serial.c/rs_open() - Kuba */
1714
1715 /* ftdi_set_termios will send usb control messages */
1716 if (tty)
1717 ftdi_set_termios(tty, port, tty->termios);
1718
1719 /* Not throttled */
1720 spin_lock_irqsave(&priv->rx_lock, flags);
1721 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
1722 spin_unlock_irqrestore(&priv->rx_lock, flags);
1723
1724 /* Start reading from the device */
1725 priv->rx_processed = 0;
1726 usb_fill_bulk_urb(port->read_urb, dev,
1727 usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress),
1728 port->read_urb->transfer_buffer,
1729 port->read_urb->transfer_buffer_length,
1730 ftdi_read_bulk_callback, port);
1731 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
1732 if (result)
1733 dev_err(&port->dev,
1734 "%s - failed submitting read urb, error %d\n",
1735 __func__, result);
1736 else
1737 kref_get(&priv->kref);
1738
1739 return result;
1740 } /* ftdi_open */
1741
1742
1743 static void ftdi_dtr_rts(struct usb_serial_port *port, int on)
1744 {
1745 struct ftdi_private *priv = usb_get_serial_port_data(port);
1746 char buf[1];
1747
1748 mutex_lock(&port->serial->disc_mutex);
1749 if (!port->serial->disconnected) {
1750 /* Disable flow control */
1751 if (!on && usb_control_msg(port->serial->dev,
1752 usb_sndctrlpipe(port->serial->dev, 0),
1753 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
1754 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
1755 0, priv->interface, buf, 0,
1756 WDR_TIMEOUT) < 0) {
1757 dev_err(&port->dev, "error from flowcontrol urb\n");
1758 }
1759 /* drop RTS and DTR */
1760 if (on)
1761 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1762 else
1763 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1764 }
1765 mutex_unlock(&port->serial->disc_mutex);
1766 }
1767
1768 /*
1769 * usbserial:__serial_close only calls ftdi_close if the point is open
1770 *
1771 * This only gets called when it is the last close
1772 *
1773 *
1774 */
1775
1776 static void ftdi_close(struct usb_serial_port *port)
1777 { /* ftdi_close */
1778 struct ftdi_private *priv = usb_get_serial_port_data(port);
1779
1780 dbg("%s", __func__);
1781
1782
1783 /* cancel any scheduled reading */
1784 cancel_delayed_work_sync(&priv->rx_work);
1785
1786 /* shutdown our bulk read */
1787 usb_kill_urb(port->read_urb);
1788 kref_put(&priv->kref, ftdi_sio_priv_release);
1789 } /* ftdi_close */
1790
1791
1792
1793 /* The SIO requires the first byte to have:
1794 * B0 1
1795 * B1 0
1796 * B2..7 length of message excluding byte 0
1797 *
1798 * The new devices do not require this byte
1799 */
1800 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
1801 const unsigned char *buf, int count)
1802 { /* ftdi_write */
1803 struct ftdi_private *priv = usb_get_serial_port_data(port);
1804 struct urb *urb;
1805 unsigned char *buffer;
1806 int data_offset ; /* will be 1 for the SIO and 0 otherwise */
1807 int status;
1808 int transfer_size;
1809 unsigned long flags;
1810
1811 dbg("%s port %d, %d bytes", __func__, port->number, count);
1812
1813 if (count == 0) {
1814 dbg("write request of 0 bytes");
1815 return 0;
1816 }
1817 spin_lock_irqsave(&priv->tx_lock, flags);
1818 if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) {
1819 spin_unlock_irqrestore(&priv->tx_lock, flags);
1820 dbg("%s - write limit hit\n", __func__);
1821 return 0;
1822 }
1823 priv->tx_outstanding_urbs++;
1824 spin_unlock_irqrestore(&priv->tx_lock, flags);
1825
1826 data_offset = priv->write_offset;
1827 dbg("data_offset set to %d", data_offset);
1828
1829 /* Determine total transfer size */
1830 transfer_size = count;
1831 if (data_offset > 0) {
1832 /* Original sio needs control bytes too... */
1833 transfer_size += (data_offset *
1834 ((count + (priv->max_packet_size - 1 - data_offset)) /
1835 (priv->max_packet_size - data_offset)));
1836 }
1837
1838 buffer = kmalloc(transfer_size, GFP_ATOMIC);
1839 if (!buffer) {
1840 dev_err(&port->dev,
1841 "%s ran out of kernel memory for urb ...\n", __func__);
1842 count = -ENOMEM;
1843 goto error_no_buffer;
1844 }
1845
1846 urb = usb_alloc_urb(0, GFP_ATOMIC);
1847 if (!urb) {
1848 dev_err(&port->dev, "%s - no more free urbs\n", __func__);
1849 count = -ENOMEM;
1850 goto error_no_urb;
1851 }
1852
1853 /* Copy data */
1854 if (data_offset > 0) {
1855 /* Original sio requires control byte at start of
1856 each packet. */
1857 int user_pktsz = priv->max_packet_size - data_offset;
1858 int todo = count;
1859 unsigned char *first_byte = buffer;
1860 const unsigned char *current_position = buf;
1861
1862 while (todo > 0) {
1863 if (user_pktsz > todo)
1864 user_pktsz = todo;
1865 /* Write the control byte at the front of the packet*/
1866 *first_byte = 1 | ((user_pktsz) << 2);
1867 /* Copy data for packet */
1868 memcpy(first_byte + data_offset,
1869 current_position, user_pktsz);
1870 first_byte += user_pktsz + data_offset;
1871 current_position += user_pktsz;
1872 todo -= user_pktsz;
1873 }
1874 } else {
1875 /* No control byte required. */
1876 /* Copy in the data to send */
1877 memcpy(buffer, buf, count);
1878 }
1879
1880 usb_serial_debug_data(debug, &port->dev, __func__,
1881 transfer_size, buffer);
1882
1883 /* fill the buffer and send it */
1884 usb_fill_bulk_urb(urb, port->serial->dev,
1885 usb_sndbulkpipe(port->serial->dev,
1886 port->bulk_out_endpointAddress),
1887 buffer, transfer_size,
1888 ftdi_write_bulk_callback, port);
1889
1890 status = usb_submit_urb(urb, GFP_ATOMIC);
1891 if (status) {
1892 dev_err(&port->dev,
1893 "%s - failed submitting write urb, error %d\n",
1894 __func__, status);
1895 count = status;
1896 goto error;
1897 } else {
1898 spin_lock_irqsave(&priv->tx_lock, flags);
1899 priv->tx_outstanding_bytes += count;
1900 priv->tx_bytes += count;
1901 spin_unlock_irqrestore(&priv->tx_lock, flags);
1902 }
1903
1904 /* we are done with this urb, so let the host driver
1905 * really free it when it is finished with it */
1906 usb_free_urb(urb);
1907
1908 dbg("%s write returning: %d", __func__, count);
1909 return count;
1910 error:
1911 usb_free_urb(urb);
1912 error_no_urb:
1913 kfree(buffer);
1914 error_no_buffer:
1915 spin_lock_irqsave(&priv->tx_lock, flags);
1916 priv->tx_outstanding_urbs--;
1917 spin_unlock_irqrestore(&priv->tx_lock, flags);
1918 return count;
1919 } /* ftdi_write */
1920
1921
1922 /* This function may get called when the device is closed */
1923
1924 static void ftdi_write_bulk_callback(struct urb *urb)
1925 {
1926 unsigned long flags;
1927 struct usb_serial_port *port = urb->context;
1928 struct ftdi_private *priv;
1929 int data_offset; /* will be 1 for the SIO and 0 otherwise */
1930 unsigned long countback;
1931 int status = urb->status;
1932
1933 /* free up the transfer buffer, as usb_free_urb() does not do this */
1934 kfree(urb->transfer_buffer);
1935
1936 dbg("%s - port %d", __func__, port->number);
1937
1938 priv = usb_get_serial_port_data(port);
1939 if (!priv) {
1940 dbg("%s - bad port private data pointer - exiting", __func__);
1941 return;
1942 }
1943 /* account for transferred data */
1944 countback = urb->actual_length;
1945 data_offset = priv->write_offset;
1946 if (data_offset > 0) {
1947 /* Subtract the control bytes */
1948 countback -= (data_offset * DIV_ROUND_UP(countback, priv->max_packet_size));
1949 }
1950 spin_lock_irqsave(&priv->tx_lock, flags);
1951 --priv->tx_outstanding_urbs;
1952 priv->tx_outstanding_bytes -= countback;
1953 spin_unlock_irqrestore(&priv->tx_lock, flags);
1954
1955 if (status) {
1956 dbg("nonzero write bulk status received: %d", status);
1957 return;
1958 }
1959
1960 usb_serial_port_softint(port);
1961 } /* ftdi_write_bulk_callback */
1962
1963
1964 static int ftdi_write_room(struct tty_struct *tty)
1965 {
1966 struct usb_serial_port *port = tty->driver_data;
1967 struct ftdi_private *priv = usb_get_serial_port_data(port);
1968 int room;
1969 unsigned long flags;
1970
1971 dbg("%s - port %d", __func__, port->number);
1972
1973 spin_lock_irqsave(&priv->tx_lock, flags);
1974 if (priv->tx_outstanding_urbs < URB_UPPER_LIMIT) {
1975 /*
1976 * We really can take anything the user throws at us
1977 * but let's pick a nice big number to tell the tty
1978 * layer that we have lots of free space
1979 */
1980 room = 2048;
1981 } else {
1982 room = 0;
1983 }
1984 spin_unlock_irqrestore(&priv->tx_lock, flags);
1985 return room;
1986 }
1987
1988 static int ftdi_chars_in_buffer(struct tty_struct *tty)
1989 {
1990 struct usb_serial_port *port = tty->driver_data;
1991 struct ftdi_private *priv = usb_get_serial_port_data(port);
1992 int buffered;
1993 unsigned long flags;
1994
1995 dbg("%s - port %d", __func__, port->number);
1996
1997 spin_lock_irqsave(&priv->tx_lock, flags);
1998 buffered = (int)priv->tx_outstanding_bytes;
1999 spin_unlock_irqrestore(&priv->tx_lock, flags);
2000 if (buffered < 0) {
2001 dev_err(&port->dev, "%s outstanding tx bytes is negative!\n",
2002 __func__);
2003 buffered = 0;
2004 }
2005 return buffered;
2006 }
2007
2008 static void ftdi_read_bulk_callback(struct urb *urb)
2009 {
2010 struct usb_serial_port *port = urb->context;
2011 struct tty_struct *tty;
2012 struct ftdi_private *priv;
2013 unsigned long countread;
2014 unsigned long flags;
2015 int status = urb->status;
2016
2017 if (urb->number_of_packets > 0) {
2018 dev_err(&port->dev, "%s transfer_buffer_length %d "
2019 "actual_length %d number of packets %d\n", __func__,
2020 urb->transfer_buffer_length,
2021 urb->actual_length, urb->number_of_packets);
2022 dev_err(&port->dev, "%s transfer_flags %x\n", __func__,
2023 urb->transfer_flags);
2024 }
2025
2026 dbg("%s - port %d", __func__, port->number);
2027
2028 if (port->port.count <= 0)
2029 return;
2030
2031 tty = tty_port_tty_get(&port->port);
2032 if (!tty) {
2033 dbg("%s - bad tty pointer - exiting", __func__);
2034 return;
2035 }
2036
2037 priv = usb_get_serial_port_data(port);
2038 if (!priv) {
2039 dbg("%s - bad port private data pointer - exiting", __func__);
2040 goto out;
2041 }
2042
2043 if (urb != port->read_urb)
2044 dev_err(&port->dev, "%s - Not my urb!\n", __func__);
2045
2046 if (status) {
2047 /* This will happen at close every time so it is a dbg not an
2048 err */
2049 dbg("(this is ok on close) nonzero read bulk status received: %d", status);
2050 goto out;
2051 }
2052
2053 /* count data bytes, but not status bytes */
2054 countread = urb->actual_length;
2055 countread -= 2 * DIV_ROUND_UP(countread, priv->max_packet_size);
2056 spin_lock_irqsave(&priv->rx_lock, flags);
2057 priv->rx_bytes += countread;
2058 spin_unlock_irqrestore(&priv->rx_lock, flags);
2059
2060 ftdi_process_read(&priv->rx_work.work);
2061 out:
2062 tty_kref_put(tty);
2063 } /* ftdi_read_bulk_callback */
2064
2065
2066 static void ftdi_process_read(struct work_struct *work)
2067 { /* ftdi_process_read */
2068 struct ftdi_private *priv =
2069 container_of(work, struct ftdi_private, rx_work.work);
2070 struct usb_serial_port *port = priv->port;
2071 struct urb *urb;
2072 struct tty_struct *tty;
2073 char error_flag;
2074 unsigned char *data;
2075
2076 int i;
2077 int result;
2078 int need_flip;
2079 int packet_offset;
2080 unsigned long flags;
2081
2082 dbg("%s - port %d", __func__, port->number);
2083
2084 if (port->port.count <= 0)
2085 return;
2086
2087 tty = tty_port_tty_get(&port->port);
2088 if (!tty) {
2089 dbg("%s - bad tty pointer - exiting", __func__);
2090 return;
2091 }
2092
2093 priv = usb_get_serial_port_data(port);
2094 if (!priv) {
2095 dbg("%s - bad port private data pointer - exiting", __func__);
2096 goto out;
2097 }
2098
2099 urb = port->read_urb;
2100 if (!urb) {
2101 dbg("%s - bad read_urb pointer - exiting", __func__);
2102 goto out;
2103 }
2104
2105 data = urb->transfer_buffer;
2106
2107 if (priv->rx_processed) {
2108 dbg("%s - already processed: %d bytes, %d remain", __func__,
2109 priv->rx_processed,
2110 urb->actual_length - priv->rx_processed);
2111 } else {
2112 /* The first two bytes of every read packet are status */
2113 if (urb->actual_length > 2)
2114 usb_serial_debug_data(debug, &port->dev, __func__,
2115 urb->actual_length, data);
2116 else
2117 dbg("Status only: %03oo %03oo", data[0], data[1]);
2118 }
2119
2120
2121 /* TO DO -- check for hung up line and handle appropriately: */
2122 /* send hangup */
2123 /* See acm.c - you do a tty_hangup - eg tty_hangup(tty) */
2124 /* if CD is dropped and the line is not CLOCAL then we should hangup */
2125
2126 need_flip = 0;
2127 for (packet_offset = priv->rx_processed;
2128 packet_offset < urb->actual_length; packet_offset += priv->max_packet_size) {
2129 int length;
2130
2131 /* Compare new line status to the old one, signal if different/
2132 N.B. packet may be processed more than once, but differences
2133 are only processed once. */
2134 char new_status = data[packet_offset + 0] &
2135 FTDI_STATUS_B0_MASK;
2136 if (new_status != priv->prev_status) {
2137 priv->diff_status |=
2138 new_status ^ priv->prev_status;
2139 wake_up_interruptible(&priv->delta_msr_wait);
2140 priv->prev_status = new_status;
2141 }
2142
2143 length = min_t(u32, priv->max_packet_size, urb->actual_length-packet_offset)-2;
2144 if (length < 0) {
2145 dev_err(&port->dev, "%s - bad packet length: %d\n",
2146 __func__, length+2);
2147 length = 0;
2148 }
2149
2150 if (priv->rx_flags & THROTTLED) {
2151 dbg("%s - throttled", __func__);
2152 break;
2153 }
2154 if (tty_buffer_request_room(tty, length) < length) {
2155 /* break out & wait for throttling/unthrottling to
2156 happen */
2157 dbg("%s - receive room low", __func__);
2158 break;
2159 }
2160
2161 /* Handle errors and break */
2162 error_flag = TTY_NORMAL;
2163 /* Although the device uses a bitmask and hence can have
2164 multiple errors on a packet - the order here sets the
2165 priority the error is returned to the tty layer */
2166
2167 if (data[packet_offset+1] & FTDI_RS_OE) {
2168 error_flag = TTY_OVERRUN;
2169 dbg("OVERRRUN error");
2170 }
2171 if (data[packet_offset+1] & FTDI_RS_BI) {
2172 error_flag = TTY_BREAK;
2173 dbg("BREAK received");
2174 usb_serial_handle_break(port);
2175 }
2176 if (data[packet_offset+1] & FTDI_RS_PE) {
2177 error_flag = TTY_PARITY;
2178 dbg("PARITY error");
2179 }
2180 if (data[packet_offset+1] & FTDI_RS_FE) {
2181 error_flag = TTY_FRAME;
2182 dbg("FRAMING error");
2183 }
2184 if (length > 0) {
2185 for (i = 2; i < length+2; i++) {
2186 /* Note that the error flag is duplicated for
2187 every character received since we don't know
2188 which character it applied to */
2189 if (!usb_serial_handle_sysrq_char(tty, port,
2190 data[packet_offset + i]))
2191 tty_insert_flip_char(tty,
2192 data[packet_offset + i],
2193 error_flag);
2194 }
2195 need_flip = 1;
2196 }
2197
2198 #ifdef NOT_CORRECT_BUT_KEEPING_IT_FOR_NOW
2199 /* if a parity error is detected you get status packets forever
2200 until a character is sent without a parity error.
2201 This doesn't work well since the application receives a
2202 never ending stream of bad data - even though new data
2203 hasn't been sent. Therefore I (bill) have taken this out.
2204 However - this might make sense for framing errors and so on
2205 so I am leaving the code in for now.
2206 */
2207 else {
2208 if (error_flag != TTY_NORMAL) {
2209 dbg("error_flag is not normal");
2210 /* In this case it is just status - if that is
2211 an error send a bad character */
2212 if (tty->flip.count >= TTY_FLIPBUF_SIZE)
2213 tty_flip_buffer_push(tty);
2214 tty_insert_flip_char(tty, 0xff, error_flag);
2215 need_flip = 1;
2216 }
2217 }
2218 #endif
2219 } /* "for(packet_offset=0..." */
2220
2221 /* Low latency */
2222 if (need_flip)
2223 tty_flip_buffer_push(tty);
2224
2225 if (packet_offset < urb->actual_length) {
2226 /* not completely processed - record progress */
2227 priv->rx_processed = packet_offset;
2228 dbg("%s - incomplete, %d bytes processed, %d remain",
2229 __func__, packet_offset,
2230 urb->actual_length - packet_offset);
2231 /* check if we were throttled while processing */
2232 spin_lock_irqsave(&priv->rx_lock, flags);
2233 if (priv->rx_flags & THROTTLED) {
2234 priv->rx_flags |= ACTUALLY_THROTTLED;
2235 spin_unlock_irqrestore(&priv->rx_lock, flags);
2236 dbg("%s - deferring remainder until unthrottled",
2237 __func__);
2238 goto out;
2239 }
2240 spin_unlock_irqrestore(&priv->rx_lock, flags);
2241 /* if the port is closed stop trying to read */
2242 if (port->port.count > 0)
2243 /* delay processing of remainder */
2244 schedule_delayed_work(&priv->rx_work, 1);
2245 else
2246 dbg("%s - port is closed", __func__);
2247 goto out;
2248 }
2249
2250 /* urb is completely processed */
2251 priv->rx_processed = 0;
2252
2253 /* if the port is closed stop trying to read */
2254 if (port->port.count > 0) {
2255 /* Continue trying to always read */
2256 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
2257 usb_rcvbulkpipe(port->serial->dev,
2258 port->bulk_in_endpointAddress),
2259 port->read_urb->transfer_buffer,
2260 port->read_urb->transfer_buffer_length,
2261 ftdi_read_bulk_callback, port);
2262
2263 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
2264 if (result)
2265 dev_err(&port->dev,
2266 "%s - failed resubmitting read urb, error %d\n",
2267 __func__, result);
2268 }
2269 out:
2270 tty_kref_put(tty);
2271 } /* ftdi_process_read */
2272
2273
2274 static void ftdi_break_ctl(struct tty_struct *tty, int break_state)
2275 {
2276 struct usb_serial_port *port = tty->driver_data;
2277 struct ftdi_private *priv = usb_get_serial_port_data(port);
2278 __u16 urb_value = 0;
2279 char buf[1];
2280
2281 /* break_state = -1 to turn on break, and 0 to turn off break */
2282 /* see drivers/char/tty_io.c to see it used */
2283 /* last_set_data_urb_value NEVER has the break bit set in it */
2284
2285 if (break_state)
2286 urb_value = priv->last_set_data_urb_value | FTDI_SIO_SET_BREAK;
2287 else
2288 urb_value = priv->last_set_data_urb_value;
2289
2290 if (usb_control_msg(port->serial->dev,
2291 usb_sndctrlpipe(port->serial->dev, 0),
2292 FTDI_SIO_SET_DATA_REQUEST,
2293 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2294 urb_value , priv->interface,
2295 buf, 0, WDR_TIMEOUT) < 0) {
2296 dev_err(&port->dev, "%s FAILED to enable/disable break state "
2297 "(state was %d)\n", __func__, break_state);
2298 }
2299
2300 dbg("%s break state is %d - urb is %d", __func__,
2301 break_state, urb_value);
2302
2303 }
2304
2305
2306 /* old_termios contains the original termios settings and tty->termios contains
2307 * the new setting to be used
2308 * WARNING: set_termios calls this with old_termios in kernel space
2309 */
2310
2311 static void ftdi_set_termios(struct tty_struct *tty,
2312 struct usb_serial_port *port, struct ktermios *old_termios)
2313 { /* ftdi_termios */
2314 struct usb_device *dev = port->serial->dev;
2315 struct ftdi_private *priv = usb_get_serial_port_data(port);
2316 struct ktermios *termios = tty->termios;
2317 unsigned int cflag = termios->c_cflag;
2318 __u16 urb_value; /* will hold the new flags */
2319 char buf[1]; /* Perhaps I should dynamically alloc this? */
2320
2321 /* Added for xon/xoff support */
2322 unsigned int iflag = termios->c_iflag;
2323 unsigned char vstop;
2324 unsigned char vstart;
2325
2326 dbg("%s", __func__);
2327
2328 /* Force baud rate if this device requires it, unless it is set to
2329 B0. */
2330 if (priv->force_baud && ((termios->c_cflag & CBAUD) != B0)) {
2331 dbg("%s: forcing baud rate for this device", __func__);
2332 tty_encode_baud_rate(tty, priv->force_baud,
2333 priv->force_baud);
2334 }
2335
2336 /* Force RTS-CTS if this device requires it. */
2337 if (priv->force_rtscts) {
2338 dbg("%s: forcing rtscts for this device", __func__);
2339 termios->c_cflag |= CRTSCTS;
2340 }
2341
2342 cflag = termios->c_cflag;
2343
2344 /* FIXME -For this cut I don't care if the line is really changing or
2345 not - so just do the change regardless - should be able to
2346 compare old_termios and tty->termios */
2347 /* NOTE These routines can get interrupted by
2348 ftdi_sio_read_bulk_callback - need to examine what this means -
2349 don't see any problems yet */
2350
2351 /* Set number of data bits, parity, stop bits */
2352
2353 termios->c_cflag &= ~CMSPAR;
2354
2355 urb_value = 0;
2356 urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 :
2357 FTDI_SIO_SET_DATA_STOP_BITS_1);
2358 urb_value |= (cflag & PARENB ?
2359 (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD :
2360 FTDI_SIO_SET_DATA_PARITY_EVEN) :
2361 FTDI_SIO_SET_DATA_PARITY_NONE);
2362 if (cflag & CSIZE) {
2363 switch (cflag & CSIZE) {
2364 case CS5: urb_value |= 5; dbg("Setting CS5"); break;
2365 case CS6: urb_value |= 6; dbg("Setting CS6"); break;
2366 case CS7: urb_value |= 7; dbg("Setting CS7"); break;
2367 case CS8: urb_value |= 8; dbg("Setting CS8"); break;
2368 default:
2369 dev_err(&port->dev, "CSIZE was set but not CS5-CS8\n");
2370 }
2371 }
2372
2373 /* This is needed by the break command since it uses the same command
2374 - but is or'ed with this value */
2375 priv->last_set_data_urb_value = urb_value;
2376
2377 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2378 FTDI_SIO_SET_DATA_REQUEST,
2379 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2380 urb_value , priv->interface,
2381 buf, 0, WDR_SHORT_TIMEOUT) < 0) {
2382 dev_err(&port->dev, "%s FAILED to set "
2383 "databits/stopbits/parity\n", __func__);
2384 }
2385
2386 /* Now do the baudrate */
2387 if ((cflag & CBAUD) == B0) {
2388 /* Disable flow control */
2389 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2390 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2391 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2392 0, priv->interface,
2393 buf, 0, WDR_TIMEOUT) < 0) {
2394 dev_err(&port->dev,
2395 "%s error from disable flowcontrol urb\n",
2396 __func__);
2397 }
2398 /* Drop RTS and DTR */
2399 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2400 } else {
2401 /* set the baudrate determined before */
2402 if (change_speed(tty, port))
2403 dev_err(&port->dev, "%s urb failed to set baudrate\n",
2404 __func__);
2405 /* Ensure RTS and DTR are raised when baudrate changed from 0 */
2406 if (!old_termios || (old_termios->c_cflag & CBAUD) == B0)
2407 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2408 }
2409
2410 /* Set flow control */
2411 /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */
2412 if (cflag & CRTSCTS) {
2413 dbg("%s Setting to CRTSCTS flow control", __func__);
2414 if (usb_control_msg(dev,
2415 usb_sndctrlpipe(dev, 0),
2416 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2417 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2418 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface),
2419 buf, 0, WDR_TIMEOUT) < 0) {
2420 dev_err(&port->dev,
2421 "urb failed to set to rts/cts flow control\n");
2422 }
2423
2424 } else {
2425 /*
2426 * Xon/Xoff code
2427 *
2428 * Check the IXOFF status in the iflag component of the
2429 * termios structure. If IXOFF is not set, the pre-xon/xoff
2430 * code is executed.
2431 */
2432 if (iflag & IXOFF) {
2433 dbg("%s request to enable xonxoff iflag=%04x",
2434 __func__, iflag);
2435 /* Try to enable the XON/XOFF on the ftdi_sio
2436 * Set the vstart and vstop -- could have been done up
2437 * above where a lot of other dereferencing is done but
2438 * that would be very inefficient as vstart and vstop
2439 * are not always needed.
2440 */
2441 vstart = termios->c_cc[VSTART];
2442 vstop = termios->c_cc[VSTOP];
2443 urb_value = (vstop << 8) | (vstart);
2444
2445 if (usb_control_msg(dev,
2446 usb_sndctrlpipe(dev, 0),
2447 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2448 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2449 urb_value , (FTDI_SIO_XON_XOFF_HS
2450 | priv->interface),
2451 buf, 0, WDR_TIMEOUT) < 0) {
2452 dev_err(&port->dev, "urb failed to set to "
2453 "xon/xoff flow control\n");
2454 }
2455 } else {
2456 /* else clause to only run if cflag ! CRTSCTS and iflag
2457 * ! XOFF. CHECKME Assuming XON/XOFF handled by tty
2458 * stack - not by device */
2459 dbg("%s Turning off hardware flow control", __func__);
2460 if (usb_control_msg(dev,
2461 usb_sndctrlpipe(dev, 0),
2462 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2463 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2464 0, priv->interface,
2465 buf, 0, WDR_TIMEOUT) < 0) {
2466 dev_err(&port->dev,
2467 "urb failed to clear flow control\n");
2468 }
2469 }
2470
2471 }
2472 return;
2473 }
2474
2475 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
2476 {
2477 struct usb_serial_port *port = tty->driver_data;
2478 struct ftdi_private *priv = usb_get_serial_port_data(port);
2479 unsigned char buf[2];
2480 int ret;
2481
2482 dbg("%s TIOCMGET", __func__);
2483 switch (priv->chip_type) {
2484 case SIO:
2485 /* Request the status from the device */
2486 ret = usb_control_msg(port->serial->dev,
2487 usb_rcvctrlpipe(port->serial->dev, 0),
2488 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2489 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2490 0, 0,
2491 buf, 1, WDR_TIMEOUT);
2492 if (ret < 0)
2493 return ret;
2494 break;
2495 case FT8U232AM:
2496 case FT232BM:
2497 case FT2232C:
2498 case FT232RL:
2499 case FT2232H:
2500 case FT4232H:
2501 /* the 8U232AM returns a two byte value (the sio is a 1 byte
2502 value) - in the same format as the data returned from the in
2503 point */
2504 ret = usb_control_msg(port->serial->dev,
2505 usb_rcvctrlpipe(port->serial->dev, 0),
2506 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2507 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2508 0, priv->interface,
2509 buf, 2, WDR_TIMEOUT);
2510 if (ret < 0)
2511 return ret;
2512 break;
2513 default:
2514 return -EFAULT;
2515 }
2516
2517 return (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
2518 (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) |
2519 (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) |
2520 (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0) |
2521 priv->last_dtr_rts;
2522 }
2523
2524 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
2525 unsigned int set, unsigned int clear)
2526 {
2527 struct usb_serial_port *port = tty->driver_data;
2528 dbg("%s TIOCMSET", __func__);
2529 return update_mctrl(port, set, clear);
2530 }
2531
2532
2533 static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
2534 unsigned int cmd, unsigned long arg)
2535 {
2536 struct usb_serial_port *port = tty->driver_data;
2537 struct ftdi_private *priv = usb_get_serial_port_data(port);
2538
2539 dbg("%s cmd 0x%04x", __func__, cmd);
2540
2541 /* Based on code from acm.c and others */
2542 switch (cmd) {
2543
2544 case TIOCGSERIAL: /* gets serial port data */
2545 return get_serial_info(port,
2546 (struct serial_struct __user *) arg);
2547
2548 case TIOCSSERIAL: /* sets serial port data */
2549 return set_serial_info(tty, port,
2550 (struct serial_struct __user *) arg);
2551
2552 /*
2553 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
2554 * - mask passed in arg for lines of interest
2555 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
2556 * Caller should use TIOCGICOUNT to see which one it was.
2557 *
2558 * This code is borrowed from linux/drivers/char/serial.c
2559 */
2560 case TIOCMIWAIT:
2561 while (priv != NULL) {
2562 interruptible_sleep_on(&priv->delta_msr_wait);
2563 /* see if a signal did it */
2564 if (signal_pending(current))
2565 return -ERESTARTSYS;
2566 else {
2567 char diff = priv->diff_status;
2568
2569 if (diff == 0)
2570 return -EIO; /* no change => error */
2571
2572 /* Consume all events */
2573 priv->diff_status = 0;
2574
2575 /* Return 0 if caller wanted to know about
2576 these bits */
2577 if (((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) ||
2578 ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) ||
2579 ((arg & TIOCM_CD) && (diff & FTDI_RS0_RLSD)) ||
2580 ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS))) {
2581 return 0;
2582 }
2583 /*
2584 * Otherwise caller can't care less about what
2585 * happened,and so we continue to wait for more
2586 * events.
2587 */
2588 }
2589 }
2590 return 0;
2591 default:
2592 break;
2593 }
2594 /* This is not necessarily an error - turns out the higher layers
2595 * will do some ioctls themselves (see comment above)
2596 */
2597 dbg("%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h", __func__, cmd);
2598 return -ENOIOCTLCMD;
2599 }
2600
2601 static void ftdi_throttle(struct tty_struct *tty)
2602 {
2603 struct usb_serial_port *port = tty->driver_data;
2604 struct ftdi_private *priv = usb_get_serial_port_data(port);
2605 unsigned long flags;
2606
2607 dbg("%s - port %d", __func__, port->number);
2608
2609 spin_lock_irqsave(&priv->rx_lock, flags);
2610 priv->rx_flags |= THROTTLED;
2611 spin_unlock_irqrestore(&priv->rx_lock, flags);
2612 }
2613
2614
2615 static void ftdi_unthrottle(struct tty_struct *tty)
2616 {
2617 struct usb_serial_port *port = tty->driver_data;
2618 struct ftdi_private *priv = usb_get_serial_port_data(port);
2619 int actually_throttled;
2620 unsigned long flags;
2621
2622 dbg("%s - port %d", __func__, port->number);
2623
2624 spin_lock_irqsave(&priv->rx_lock, flags);
2625 actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED;
2626 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
2627 spin_unlock_irqrestore(&priv->rx_lock, flags);
2628
2629 if (actually_throttled)
2630 schedule_delayed_work(&priv->rx_work, 0);
2631 }
2632
2633 static int __init ftdi_init(void)
2634 {
2635 int retval;
2636
2637 dbg("%s", __func__);
2638 if (vendor > 0 && product > 0) {
2639 /* Add user specified VID/PID to reserved element of table. */
2640 int i;
2641 for (i = 0; id_table_combined[i].idVendor; i++)
2642 ;
2643 id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
2644 id_table_combined[i].idVendor = vendor;
2645 id_table_combined[i].idProduct = product;
2646 }
2647 retval = usb_serial_register(&ftdi_sio_device);
2648 if (retval)
2649 goto failed_sio_register;
2650 retval = usb_register(&ftdi_driver);
2651 if (retval)
2652 goto failed_usb_register;
2653
2654 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
2655 DRIVER_DESC "\n");
2656 return 0;
2657 failed_usb_register:
2658 usb_serial_deregister(&ftdi_sio_device);
2659 failed_sio_register:
2660 return retval;
2661 }
2662
2663
2664 static void __exit ftdi_exit(void)
2665 {
2666
2667 dbg("%s", __func__);
2668
2669 usb_deregister(&ftdi_driver);
2670 usb_serial_deregister(&ftdi_sio_device);
2671
2672 }
2673
2674
2675 module_init(ftdi_init);
2676 module_exit(ftdi_exit);
2677
2678 MODULE_AUTHOR(DRIVER_AUTHOR);
2679 MODULE_DESCRIPTION(DRIVER_DESC);
2680 MODULE_LICENSE("GPL");
2681
2682 module_param(debug, bool, S_IRUGO | S_IWUSR);
2683 MODULE_PARM_DESC(debug, "Debug enabled or not");
2684 module_param(vendor, ushort, 0);
2685 MODULE_PARM_DESC(vendor, "User specified vendor ID (default="
2686 __MODULE_STRING(FTDI_VID)")");
2687 module_param(product, ushort, 0);
2688 MODULE_PARM_DESC(product, "User specified product ID");
2689
2690 module_param(ndi_latency_timer, int, S_IRUGO | S_IWUSR);
2691 MODULE_PARM_DESC(ndi_latency_timer, "NDI device latency timer override");
connection oriented routing - ARCHIVE NO UPDATES HERE