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USB: ftdi_sio: re-implement read processing
[linux-2.6/verdex.git] / drivers / usb / serial / ftdi_sio.c
blob048b563c936bc968367a20945d6491bedcfebd7a
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 struct usb_serial_port *port;
80 __u16 interface; /* FT2232C, FT2232H or FT4232H port interface
81 (0 for FT232/245) */
82
83 speed_t force_baud; /* if non-zero, force the baud rate to
84 this value */
85 int force_rtscts; /* if non-zero, force RTS-CTS to always
86 be enabled */
87
88 unsigned int latency; /* latency setting in use */
89 spinlock_t tx_lock; /* spinlock for transmit state */
90 unsigned long tx_bytes;
91 unsigned long tx_outstanding_bytes;
92 unsigned long tx_outstanding_urbs;
93 unsigned short max_packet_size;
94 };
95
96 /* struct ftdi_sio_quirk is used by devices requiring special attention. */
97 struct ftdi_sio_quirk {
98 int (*probe)(struct usb_serial *);
99 /* Special settings for probed ports. */
100 void (*port_probe)(struct ftdi_private *);
101 };
102
103 static int ftdi_jtag_probe(struct usb_serial *serial);
104 static int ftdi_mtxorb_hack_setup(struct usb_serial *serial);
105 static int ftdi_NDI_device_setup(struct usb_serial *serial);
106 static void ftdi_USB_UIRT_setup(struct ftdi_private *priv);
107 static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv);
108
109 static struct ftdi_sio_quirk ftdi_jtag_quirk = {
110 .probe = ftdi_jtag_probe,
111 };
112
113 static struct ftdi_sio_quirk ftdi_mtxorb_hack_quirk = {
114 .probe = ftdi_mtxorb_hack_setup,
115 };
116
117 static struct ftdi_sio_quirk ftdi_NDI_device_quirk = {
118 .probe = ftdi_NDI_device_setup,
119 };
120
121 static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = {
122 .port_probe = ftdi_USB_UIRT_setup,
123 };
124
125 static struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = {
126 .port_probe = ftdi_HE_TIRA1_setup,
127 };
128
129 /*
130 * The 8U232AM has the same API as the sio except for:
131 * - it can support MUCH higher baudrates; up to:
132 * o 921600 for RS232 and 2000000 for RS422/485 at 48MHz
133 * o 230400 at 12MHz
134 * so .. 8U232AM's baudrate setting codes are different
135 * - it has a two byte status code.
136 * - it returns characters every 16ms (the FTDI does it every 40ms)
137 *
138 * the bcdDevice value is used to differentiate FT232BM and FT245BM from
139 * the earlier FT8U232AM and FT8U232BM. For now, include all known VID/PID
140 * combinations in both tables.
141 * FIXME: perhaps bcdDevice can also identify 12MHz FT8U232AM devices,
142 * but I don't know if those ever went into mass production. [Ian Abbott]
143 */
144
145
146
147 static struct usb_device_id id_table_combined [] = {
148 { USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) },
149 { USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) },
150 { USB_DEVICE(FTDI_VID, FTDI_CANDAPTER_PID) },
151 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_0_PID) },
152 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_1_PID) },
153 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_2_PID) },
154 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_3_PID) },
155 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_4_PID) },
156 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_5_PID) },
157 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_6_PID) },
158 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_7_PID) },
159 { USB_DEVICE(FTDI_VID, FTDI_ACTZWAVE_PID) },
160 { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) },
161 { USB_DEVICE(FTDI_VID, FTDI_IPLUS_PID) },
162 { USB_DEVICE(FTDI_VID, FTDI_IPLUS2_PID) },
163 { USB_DEVICE(FTDI_VID, FTDI_DMX4ALL) },
164 { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) },
165 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) },
166 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) },
167 { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) },
168 { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) },
169 { USB_DEVICE(FTDI_VID, FTDI_4232H_PID) },
170 { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) },
171 { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) },
172 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) },
173 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_SNIFFER_PID) },
174 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_THROTTLE_PID) },
175 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_GATEWAY_PID) },
176 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) },
177 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) },
178 { USB_DEVICE(FTDI_VID, FTDI_SPROG_II) },
179 { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) },
180 { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) },
181 { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) },
182 { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) },
183 { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) },
184 { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) },
185 { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) },
186 { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) },
187 { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) },
188 { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) },
189 { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) },
190 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) },
191 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) },
192 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) },
193 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) },
194 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) },
195 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) },
196 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) },
197 { USB_DEVICE(FTDI_VID, FTDI_R2000KU_TRUE_RNG) },
198 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0100_PID) },
199 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0101_PID) },
200 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0102_PID) },
201 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0103_PID) },
202 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0104_PID) },
203 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0105_PID) },
204 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0106_PID) },
205 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0107_PID) },
206 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0108_PID) },
207 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0109_PID) },
208 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010A_PID) },
209 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010B_PID) },
210 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010C_PID) },
211 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010D_PID) },
212 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010E_PID) },
213 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010F_PID) },
214 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0110_PID) },
215 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0111_PID) },
216 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0112_PID) },
217 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0113_PID) },
218 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0114_PID) },
219 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0115_PID) },
220 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0116_PID) },
221 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0117_PID) },
222 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0118_PID) },
223 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0119_PID) },
224 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011A_PID) },
225 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011B_PID) },
226 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011C_PID) },
227 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011D_PID) },
228 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011E_PID) },
229 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011F_PID) },
230 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0120_PID) },
231 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0121_PID) },
232 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0122_PID) },
233 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0123_PID) },
234 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0124_PID) },
235 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0125_PID) },
236 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0126_PID) },
237 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0127_PID),
238 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
239 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0128_PID) },
240 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0129_PID) },
241 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012A_PID) },
242 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012B_PID) },
243 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012C_PID),
244 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
245 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012D_PID) },
246 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012E_PID) },
247 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012F_PID) },
248 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0130_PID) },
249 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0131_PID) },
250 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0132_PID) },
251 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0133_PID) },
252 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0134_PID) },
253 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0135_PID) },
254 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0136_PID) },
255 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0137_PID) },
256 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0138_PID) },
257 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0139_PID) },
258 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013A_PID) },
259 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013B_PID) },
260 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013C_PID) },
261 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013D_PID) },
262 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013E_PID) },
263 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013F_PID) },
264 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0140_PID) },
265 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0141_PID) },
266 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0142_PID) },
267 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0143_PID) },
268 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0144_PID) },
269 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0145_PID) },
270 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0146_PID) },
271 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0147_PID) },
272 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0148_PID) },
273 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0149_PID) },
274 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014A_PID) },
275 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014B_PID) },
276 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014C_PID) },
277 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014D_PID) },
278 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014E_PID) },
279 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014F_PID) },
280 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0150_PID) },
281 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0151_PID) },
282 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0152_PID) },
283 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0153_PID),
284 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
285 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0154_PID),
286 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
287 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0155_PID),
288 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
289 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0156_PID),
290 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
291 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0157_PID),
292 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
293 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0158_PID),
294 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
295 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0159_PID) },
296 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015A_PID) },
297 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015B_PID) },
298 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015C_PID) },
299 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015D_PID) },
300 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015E_PID) },
301 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015F_PID) },
302 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0160_PID) },
303 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0161_PID) },
304 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0162_PID) },
305 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0163_PID) },
306 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0164_PID) },
307 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0165_PID) },
308 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0166_PID) },
309 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0167_PID) },
310 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0168_PID) },
311 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0169_PID) },
312 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016A_PID) },
313 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016B_PID) },
314 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016C_PID) },
315 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016D_PID) },
316 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016E_PID) },
317 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016F_PID) },
318 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0170_PID) },
319 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0171_PID) },
320 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0172_PID) },
321 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0173_PID) },
322 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0174_PID) },
323 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0175_PID) },
324 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0176_PID) },
325 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0177_PID) },
326 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0178_PID) },
327 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0179_PID) },
328 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017A_PID) },
329 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017B_PID) },
330 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017C_PID) },
331 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017D_PID) },
332 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017E_PID) },
333 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017F_PID) },
334 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0180_PID) },
335 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0181_PID) },
336 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0182_PID) },
337 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0183_PID) },
338 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0184_PID) },
339 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0185_PID) },
340 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0186_PID) },
341 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0187_PID) },
342 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0188_PID) },
343 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0189_PID) },
344 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018A_PID) },
345 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018B_PID) },
346 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018C_PID) },
347 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018D_PID) },
348 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018E_PID) },
349 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018F_PID) },
350 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0190_PID) },
351 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0191_PID) },
352 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0192_PID) },
353 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0193_PID) },
354 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0194_PID) },
355 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0195_PID) },
356 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0196_PID) },
357 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0197_PID) },
358 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0198_PID) },
359 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0199_PID) },
360 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019A_PID) },
361 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019B_PID) },
362 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019C_PID) },
363 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019D_PID) },
364 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019E_PID) },
365 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019F_PID) },
366 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A0_PID) },
367 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A1_PID) },
368 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A2_PID) },
369 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A3_PID) },
370 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A4_PID) },
371 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A5_PID) },
372 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A6_PID) },
373 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A7_PID) },
374 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A8_PID) },
375 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A9_PID) },
376 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AA_PID) },
377 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AB_PID) },
378 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AC_PID) },
379 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AD_PID) },
380 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AE_PID) },
381 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AF_PID) },
382 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B0_PID) },
383 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B1_PID) },
384 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B2_PID) },
385 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B3_PID) },
386 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B4_PID) },
387 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B5_PID) },
388 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B6_PID) },
389 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B7_PID) },
390 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B8_PID) },
391 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B9_PID) },
392 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BA_PID) },
393 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BB_PID) },
394 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BC_PID) },
395 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BD_PID) },
396 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BE_PID) },
397 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BF_PID) },
398 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C0_PID) },
399 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C1_PID) },
400 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C2_PID) },
401 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C3_PID) },
402 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C4_PID) },
403 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C5_PID) },
404 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C6_PID) },
405 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C7_PID) },
406 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C8_PID) },
407 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C9_PID) },
408 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CA_PID) },
409 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CB_PID) },
410 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CC_PID) },
411 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CD_PID) },
412 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CE_PID) },
413 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CF_PID) },
414 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D0_PID) },
415 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D1_PID) },
416 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D2_PID) },
417 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D3_PID) },
418 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D4_PID) },
419 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D5_PID) },
420 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D6_PID) },
421 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D7_PID) },
422 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D8_PID) },
423 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D9_PID) },
424 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DA_PID) },
425 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DB_PID) },
426 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DC_PID) },
427 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DD_PID) },
428 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DE_PID) },
429 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DF_PID) },
430 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E0_PID) },
431 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E1_PID) },
432 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E2_PID) },
433 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E3_PID) },
434 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E4_PID) },
435 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E5_PID) },
436 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E6_PID) },
437 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E7_PID) },
438 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E8_PID) },
439 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E9_PID) },
440 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EA_PID) },
441 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EB_PID) },
442 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EC_PID) },
443 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01ED_PID) },
444 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EE_PID) },
445 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EF_PID) },
446 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F0_PID) },
447 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F1_PID) },
448 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F2_PID) },
449 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F3_PID) },
450 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F4_PID) },
451 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F5_PID) },
452 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F6_PID) },
453 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F7_PID) },
454 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F8_PID) },
455 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F9_PID) },
456 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FA_PID) },
457 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FB_PID) },
458 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FC_PID) },
459 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FD_PID) },
460 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FE_PID) },
461 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FF_PID) },
462 { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) },
463 { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) },
464 { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) },
465 { USB_DEVICE(FTDI_VID, FTDI_USBX_707_PID) },
466 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) },
467 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) },
468 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) },
469 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) },
470 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2106_PID) },
471 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) },
472 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) },
473 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) },
474 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) },
475 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) },
476 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) },
477 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) },
478 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) },
479 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) },
480 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) },
481 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) },
482 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) },
483 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) },
484 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) },
485 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) },
486 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) },
487 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) },
488 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) },
489 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) },
490 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) },
491 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) },
492 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) },
493 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) },
494 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) },
495 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) },
496 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) },
497 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) },
498 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) },
499 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) },
500 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) },
501 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) },
502 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) },
503 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) },
504 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) },
505 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) },
506 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) },
507 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) },
508 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) },
509 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) },
510 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) },
511 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) },
512 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) },
513 { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) },
514 { USB_DEVICE(OCT_VID, OCT_US101_PID) },
515 { USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID),
516 .driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk },
517 { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID),
518 .driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk },
519 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) },
520 { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) },
521 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) },
522 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) },
523 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) },
524 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) },
525 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) },
526 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) },
527 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) },
528 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) },
529 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) },
530 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) },
531 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) },
532 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) },
533 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) },
534 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) },
535 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) },
536 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) },
537 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) },
538 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) },
539 { USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) },
540 { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) },
541 { USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) },
542 { USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) },
543 { USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) },
544 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) },
545 { USB_DEVICE(FTDI_VID, FTDI_IBS_US485_PID) },
546 { USB_DEVICE(FTDI_VID, FTDI_IBS_PICPRO_PID) },
547 { USB_DEVICE(FTDI_VID, FTDI_IBS_PCMCIA_PID) },
548 { USB_DEVICE(FTDI_VID, FTDI_IBS_PK1_PID) },
549 { USB_DEVICE(FTDI_VID, FTDI_IBS_RS232MON_PID) },
550 { USB_DEVICE(FTDI_VID, FTDI_IBS_APP70_PID) },
551 { USB_DEVICE(FTDI_VID, FTDI_IBS_PEDO_PID) },
552 { USB_DEVICE(FTDI_VID, FTDI_IBS_PROD_PID) },
553 /*
554 * Due to many user requests for multiple ELV devices we enable
555 * them by default.
556 */
557 { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) },
558 { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) },
559 { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) },
560 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) },
561 { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) },
562 { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) },
563 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) },
564 { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) },
565 { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) },
566 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) },
567 { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) },
568 { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) },
569 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) },
570 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) },
571 { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) },
572 { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) },
573 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) },
574 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) },
575 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1010PC_PID) },
576 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) },
577 { USB_DEVICE(FTDI_VID, FTDI_ELV_HS485_PID) },
578 { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) },
579 { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) },
580 { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) },
581 { USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) },
582 { USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) },
583 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) },
584 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) },
585 { USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) },
586 { USB_DEVICE(FTDI_VID, FTDI_CCSLOAD_N_GO_3_PID) },
587 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU64_4_PID) },
588 { USB_DEVICE(FTDI_VID, FTDI_CCSPRIME8_5_PID) },
589 { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) },
590 { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) },
591 { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) },
592 { USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) },
593 { USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) },
594 { USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) },
595 { USB_DEVICE(FTDI_VID, FTDI_OCEANIC_PID) },
596 { USB_DEVICE(TTI_VID, TTI_QL355P_PID) },
597 { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) },
598 { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) },
599 { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) },
600 { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) },
601 { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) },
602 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) },
603 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) },
604 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) },
605 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) },
606 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) },
607 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) },
608 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) },
609 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) },
610 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) },
611 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) },
612 { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
613 { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) },
614 { USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) },
615 { USB_DEVICE(FTDI_VID, FTDI_MHAM_YS_PID) },
616 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) },
617 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) },
618 { USB_DEVICE(FTDI_VID, FTDI_MHAM_IC_PID) },
619 { USB_DEVICE(FTDI_VID, FTDI_MHAM_DB9_PID) },
620 { USB_DEVICE(FTDI_VID, FTDI_MHAM_RS232_PID) },
621 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y9_PID) },
622 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) },
623 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) },
624 { USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) },
625 { USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) },
626 { USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) },
627 { USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) },
628 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) },
629 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) },
630 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) },
631 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HRC_PID) },
632 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16IC_PID) },
633 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) },
634 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) },
635 { USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) },
636 { USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) },
637 { USB_DEVICE(FTDI_VID, FTDI_ECLO_COM_1WIRE_PID) },
638 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) },
639 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) },
640 { USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) },
641 { USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) },
642 { USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) },
643 { USB_DEVICE(ICOM_ID1_VID, ICOM_ID1_PID) },
644 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_TMU_PID) },
645 { USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) },
646 { USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) },
647 { USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) },
648 { USB_DEVICE(TESTO_VID, TESTO_USB_INTERFACE_PID) },
649 { USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) },
650 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) },
651 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) },
652 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) },
653 { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) },
654 { USB_DEVICE(FTDI_VID, FTDI_NDI_HUC_PID),
655 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
656 { USB_DEVICE(FTDI_VID, FTDI_NDI_SPECTRA_SCU_PID),
657 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
658 { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_2_PID),
659 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
660 { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_3_PID),
661 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
662 { USB_DEVICE(FTDI_VID, FTDI_NDI_AURORA_SCU_PID),
663 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
664 { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
665 { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) },
666 { USB_DEVICE(FTDI_VID, FTDI_PHI_FISCO_PID) },
667 { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) },
668 { USB_DEVICE(FTDI_VID, FTDI_ELSTER_UNICOM_PID) },
669 { USB_DEVICE(FTDI_VID, FTDI_PROPOX_JTAGCABLEII_PID) },
670 { USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID),
671 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
672 { USB_DEVICE(FIC_VID, FIC_NEO1973_DEBUG_PID),
673 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
674 { USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID),
675 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
676 { USB_DEVICE(FTDI_VID, LMI_LM3S_DEVEL_BOARD_PID),
677 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
678 { USB_DEVICE(FTDI_VID, LMI_LM3S_EVAL_BOARD_PID),
679 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
680 { USB_DEVICE(FTDI_VID, FTDI_TURTELIZER_PID),
681 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
682 { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
683 { USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) },
684 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO4x4_PID) },
685 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DGQG_PID) },
686 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DUSB_PID) },
687 { USB_DEVICE(ALTI2_VID, ALTI2_N3_PID) },
688 { USB_DEVICE(FTDI_VID, DIEBOLD_BCS_SE923_PID) },
689 { USB_DEVICE(ATMEL_VID, STK541_PID) },
690 { USB_DEVICE(DE_VID, STB_PID) },
691 { USB_DEVICE(DE_VID, WHT_PID) },
692 { USB_DEVICE(ADI_VID, ADI_GNICE_PID),
693 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
694 { USB_DEVICE(ADI_VID, ADI_GNICEPLUS_PID),
695 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
696 { USB_DEVICE(JETI_VID, JETI_SPC1201_PID) },
697 { USB_DEVICE(MARVELL_VID, MARVELL_SHEEVAPLUG_PID),
698 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
699 { USB_DEVICE(LARSENBRUSGAARD_VID, LB_ALTITRACK_PID) },
700 { USB_DEVICE(GN_OTOMETRICS_VID, AURICAL_USB_PID) },
701 { USB_DEVICE(BAYER_VID, BAYER_CONTOUR_CABLE_PID) },
702 { USB_DEVICE(FTDI_VID, MARVELL_OPENRD_PID),
703 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
704 { USB_DEVICE(FTDI_VID, HAMEG_HO820_PID) },
705 { USB_DEVICE(FTDI_VID, HAMEG_HO870_PID) },
706 { }, /* Optional parameter entry */
707 { } /* Terminating entry */
708 };
709
710 MODULE_DEVICE_TABLE(usb, id_table_combined);
711
712 static struct usb_driver ftdi_driver = {
713 .name = "ftdi_sio",
714 .probe = usb_serial_probe,
715 .disconnect = usb_serial_disconnect,
716 .id_table = id_table_combined,
717 .no_dynamic_id = 1,
718 };
719
720 static const char *ftdi_chip_name[] = {
721 [SIO] = "SIO", /* the serial part of FT8U100AX */
722 [FT8U232AM] = "FT8U232AM",
723 [FT232BM] = "FT232BM",
724 [FT2232C] = "FT2232C",
725 [FT232RL] = "FT232RL",
726 [FT2232H] = "FT2232H",
727 [FT4232H] = "FT4232H"
728 };
729
730
731 /* Constants for read urb and write urb */
732 #define BUFSZ 512
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 usb_serial_port *port);
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 write_latency_timer(port);
1229
1230 check_and_exit:
1231 if ((old_priv.flags & ASYNC_SPD_MASK) !=
1232 (priv->flags & ASYNC_SPD_MASK)) {
1233 if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
1234 tty->alt_speed = 57600;
1235 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
1236 tty->alt_speed = 115200;
1237 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
1238 tty->alt_speed = 230400;
1239 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
1240 tty->alt_speed = 460800;
1241 else
1242 tty->alt_speed = 0;
1243 }
1244 if (((old_priv.flags & ASYNC_SPD_MASK) !=
1245 (priv->flags & ASYNC_SPD_MASK)) ||
1246 (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
1247 (old_priv.custom_divisor != priv->custom_divisor))) {
1248 unlock_kernel();
1249 change_speed(tty, port);
1250 }
1251 else
1252 unlock_kernel();
1253 return 0;
1254
1255 } /* set_serial_info */
1256
1257
1258 /* Determine type of FTDI chip based on USB config and descriptor. */
1259 static void ftdi_determine_type(struct usb_serial_port *port)
1260 {
1261 struct ftdi_private *priv = usb_get_serial_port_data(port);
1262 struct usb_serial *serial = port->serial;
1263 struct usb_device *udev = serial->dev;
1264 unsigned version;
1265 unsigned interfaces;
1266
1267 /* Assume it is not the original SIO device for now. */
1268 priv->baud_base = 48000000 / 2;
1269 priv->write_offset = 0;
1270
1271 version = le16_to_cpu(udev->descriptor.bcdDevice);
1272 interfaces = udev->actconfig->desc.bNumInterfaces;
1273 dbg("%s: bcdDevice = 0x%x, bNumInterfaces = %u", __func__,
1274 version, interfaces);
1275 if (interfaces > 1) {
1276 int inter;
1277
1278 /* Multiple interfaces.*/
1279 if (version == 0x0800) {
1280 priv->chip_type = FT4232H;
1281 /* Hi-speed - baud clock runs at 120MHz */
1282 priv->baud_base = 120000000 / 2;
1283 } else if (version == 0x0700) {
1284 priv->chip_type = FT2232H;
1285 /* Hi-speed - baud clock runs at 120MHz */
1286 priv->baud_base = 120000000 / 2;
1287 } else
1288 priv->chip_type = FT2232C;
1289
1290 /* Determine interface code. */
1291 inter = serial->interface->altsetting->desc.bInterfaceNumber;
1292 if (inter == 0) {
1293 priv->interface = INTERFACE_A;
1294 } else if (inter == 1) {
1295 priv->interface = INTERFACE_B;
1296 } else if (inter == 2) {
1297 priv->interface = INTERFACE_C;
1298 } else if (inter == 3) {
1299 priv->interface = INTERFACE_D;
1300 }
1301 /* BM-type devices have a bug where bcdDevice gets set
1302 * to 0x200 when iSerialNumber is 0. */
1303 if (version < 0x500) {
1304 dbg("%s: something fishy - bcdDevice too low for multi-interface device",
1305 __func__);
1306 }
1307 } else if (version < 0x200) {
1308 /* Old device. Assume its the original SIO. */
1309 priv->chip_type = SIO;
1310 priv->baud_base = 12000000 / 16;
1311 priv->write_offset = 1;
1312 } else if (version < 0x400) {
1313 /* Assume its an FT8U232AM (or FT8U245AM) */
1314 /* (It might be a BM because of the iSerialNumber bug,
1315 * but it will still work as an AM device.) */
1316 priv->chip_type = FT8U232AM;
1317 } else if (version < 0x600) {
1318 /* Assume its an FT232BM (or FT245BM) */
1319 priv->chip_type = FT232BM;
1320 } else {
1321 /* Assume its an FT232R */
1322 priv->chip_type = FT232RL;
1323 }
1324 dev_info(&udev->dev, "Detected %s\n", ftdi_chip_name[priv->chip_type]);
1325 }
1326
1327
1328 /* Determine the maximum packet size for the device. This depends on the chip
1329 * type and the USB host capabilities. The value should be obtained from the
1330 * device descriptor as the chip will use the appropriate values for the host.*/
1331 static void ftdi_set_max_packet_size(struct usb_serial_port *port)
1332 {
1333 struct ftdi_private *priv = usb_get_serial_port_data(port);
1334 struct usb_serial *serial = port->serial;
1335 struct usb_device *udev = serial->dev;
1336
1337 struct usb_interface *interface = serial->interface;
1338 struct usb_endpoint_descriptor *ep_desc = &interface->cur_altsetting->endpoint[1].desc;
1339
1340 unsigned num_endpoints;
1341 int i = 0;
1342
1343 num_endpoints = interface->cur_altsetting->desc.bNumEndpoints;
1344 dev_info(&udev->dev, "Number of endpoints %d\n", num_endpoints);
1345
1346 /* NOTE: some customers have programmed FT232R/FT245R devices
1347 * with an endpoint size of 0 - not good. In this case, we
1348 * want to override the endpoint descriptor setting and use a
1349 * value of 64 for wMaxPacketSize */
1350 for (i = 0; i < num_endpoints; i++) {
1351 dev_info(&udev->dev, "Endpoint %d MaxPacketSize %d\n", i+1,
1352 interface->cur_altsetting->endpoint[i].desc.wMaxPacketSize);
1353 ep_desc = &interface->cur_altsetting->endpoint[i].desc;
1354 if (ep_desc->wMaxPacketSize == 0) {
1355 ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
1356 dev_info(&udev->dev, "Overriding wMaxPacketSize on endpoint %d\n", i);
1357 }
1358 }
1359
1360 /* set max packet size based on descriptor */
1361 priv->max_packet_size = ep_desc->wMaxPacketSize;
1362
1363 dev_info(&udev->dev, "Setting MaxPacketSize %d\n", priv->max_packet_size);
1364 }
1365
1366
1367 /*
1368 * ***************************************************************************
1369 * Sysfs Attribute
1370 * ***************************************************************************
1371 */
1372
1373 static ssize_t show_latency_timer(struct device *dev,
1374 struct device_attribute *attr, char *buf)
1375 {
1376 struct usb_serial_port *port = to_usb_serial_port(dev);
1377 struct ftdi_private *priv = usb_get_serial_port_data(port);
1378 if (priv->flags & ASYNC_LOW_LATENCY)
1379 return sprintf(buf, "1\n");
1380 else
1381 return sprintf(buf, "%i\n", priv->latency);
1382 }
1383
1384
1385 /* Write a new value of the latency timer, in units of milliseconds. */
1386 static ssize_t store_latency_timer(struct device *dev,
1387 struct device_attribute *attr, const char *valbuf,
1388 size_t count)
1389 {
1390 struct usb_serial_port *port = to_usb_serial_port(dev);
1391 struct ftdi_private *priv = usb_get_serial_port_data(port);
1392 int v = simple_strtoul(valbuf, NULL, 10);
1393 int rv = 0;
1394
1395 priv->latency = v;
1396 rv = write_latency_timer(port);
1397 if (rv < 0)
1398 return -EIO;
1399 return count;
1400 }
1401
1402 /* Write an event character directly to the FTDI register. The ASCII
1403 value is in the low 8 bits, with the enable bit in the 9th bit. */
1404 static ssize_t store_event_char(struct device *dev,
1405 struct device_attribute *attr, const char *valbuf, size_t count)
1406 {
1407 struct usb_serial_port *port = to_usb_serial_port(dev);
1408 struct ftdi_private *priv = usb_get_serial_port_data(port);
1409 struct usb_device *udev = port->serial->dev;
1410 char buf[1];
1411 int v = simple_strtoul(valbuf, NULL, 10);
1412 int rv = 0;
1413
1414 dbg("%s: setting event char = %i", __func__, v);
1415
1416 rv = usb_control_msg(udev,
1417 usb_sndctrlpipe(udev, 0),
1418 FTDI_SIO_SET_EVENT_CHAR_REQUEST,
1419 FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE,
1420 v, priv->interface,
1421 buf, 0, WDR_TIMEOUT);
1422
1423 if (rv < 0) {
1424 dbg("Unable to write event character: %i", rv);
1425 return -EIO;
1426 }
1427
1428 return count;
1429 }
1430
1431 static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer,
1432 store_latency_timer);
1433 static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char);
1434
1435 static int create_sysfs_attrs(struct usb_serial_port *port)
1436 {
1437 struct ftdi_private *priv = usb_get_serial_port_data(port);
1438 int retval = 0;
1439
1440 dbg("%s", __func__);
1441
1442 /* XXX I've no idea if the original SIO supports the event_char
1443 * sysfs parameter, so I'm playing it safe. */
1444 if (priv->chip_type != SIO) {
1445 dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]);
1446 retval = device_create_file(&port->dev, &dev_attr_event_char);
1447 if ((!retval) &&
1448 (priv->chip_type == FT232BM ||
1449 priv->chip_type == FT2232C ||
1450 priv->chip_type == FT232RL ||
1451 priv->chip_type == FT2232H ||
1452 priv->chip_type == FT4232H)) {
1453 retval = device_create_file(&port->dev,
1454 &dev_attr_latency_timer);
1455 }
1456 }
1457 return retval;
1458 }
1459
1460 static void remove_sysfs_attrs(struct usb_serial_port *port)
1461 {
1462 struct ftdi_private *priv = usb_get_serial_port_data(port);
1463
1464 dbg("%s", __func__);
1465
1466 /* XXX see create_sysfs_attrs */
1467 if (priv->chip_type != SIO) {
1468 device_remove_file(&port->dev, &dev_attr_event_char);
1469 if (priv->chip_type == FT232BM ||
1470 priv->chip_type == FT2232C ||
1471 priv->chip_type == FT232RL ||
1472 priv->chip_type == FT2232H ||
1473 priv->chip_type == FT4232H) {
1474 device_remove_file(&port->dev, &dev_attr_latency_timer);
1475 }
1476 }
1477
1478 }
1479
1480 /*
1481 * ***************************************************************************
1482 * FTDI driver specific functions
1483 * ***************************************************************************
1484 */
1485
1486 /* Probe function to check for special devices */
1487 static int ftdi_sio_probe(struct usb_serial *serial,
1488 const struct usb_device_id *id)
1489 {
1490 struct ftdi_sio_quirk *quirk =
1491 (struct ftdi_sio_quirk *)id->driver_info;
1492
1493 if (quirk && quirk->probe) {
1494 int ret = quirk->probe(serial);
1495 if (ret != 0)
1496 return ret;
1497 }
1498
1499 usb_set_serial_data(serial, (void *)id->driver_info);
1500
1501 return 0;
1502 }
1503
1504 static int ftdi_sio_port_probe(struct usb_serial_port *port)
1505 {
1506 struct ftdi_private *priv;
1507 struct ftdi_sio_quirk *quirk = usb_get_serial_data(port->serial);
1508
1509
1510 dbg("%s", __func__);
1511
1512 priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL);
1513 if (!priv) {
1514 dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", __func__,
1515 sizeof(struct ftdi_private));
1516 return -ENOMEM;
1517 }
1518
1519 kref_init(&priv->kref);
1520 spin_lock_init(&priv->tx_lock);
1521 init_waitqueue_head(&priv->delta_msr_wait);
1522 /* This will push the characters through immediately rather
1523 than queue a task to deliver them */
1524 priv->flags = ASYNC_LOW_LATENCY;
1525
1526 if (quirk && quirk->port_probe)
1527 quirk->port_probe(priv);
1528
1529 /* Increase the size of read buffers */
1530 kfree(port->bulk_in_buffer);
1531 port->bulk_in_buffer = kmalloc(BUFSZ, GFP_KERNEL);
1532 if (!port->bulk_in_buffer) {
1533 kfree(priv);
1534 return -ENOMEM;
1535 }
1536 if (port->read_urb) {
1537 port->read_urb->transfer_buffer = port->bulk_in_buffer;
1538 port->read_urb->transfer_buffer_length = BUFSZ;
1539 }
1540
1541 priv->port = port;
1542
1543 /* Free port's existing write urb and transfer buffer. */
1544 if (port->write_urb) {
1545 usb_free_urb(port->write_urb);
1546 port->write_urb = NULL;
1547 }
1548 kfree(port->bulk_out_buffer);
1549 port->bulk_out_buffer = NULL;
1550
1551 usb_set_serial_port_data(port, priv);
1552
1553 ftdi_determine_type(port);
1554 ftdi_set_max_packet_size(port);
1555 read_latency_timer(port);
1556 create_sysfs_attrs(port);
1557 return 0;
1558 }
1559
1560 /* Setup for the USB-UIRT device, which requires hardwired
1561 * baudrate (38400 gets mapped to 312500) */
1562 /* Called from usbserial:serial_probe */
1563 static void ftdi_USB_UIRT_setup(struct ftdi_private *priv)
1564 {
1565 dbg("%s", __func__);
1566
1567 priv->flags |= ASYNC_SPD_CUST;
1568 priv->custom_divisor = 77;
1569 priv->force_baud = 38400;
1570 } /* ftdi_USB_UIRT_setup */
1571
1572 /* Setup for the HE-TIRA1 device, which requires hardwired
1573 * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */
1574
1575 static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv)
1576 {
1577 dbg("%s", __func__);
1578
1579 priv->flags |= ASYNC_SPD_CUST;
1580 priv->custom_divisor = 240;
1581 priv->force_baud = 38400;
1582 priv->force_rtscts = 1;
1583 } /* ftdi_HE_TIRA1_setup */
1584
1585 /*
1586 * Module parameter to control latency timer for NDI FTDI-based USB devices.
1587 * If this value is not set in modprobe.conf.local its value will be set to 1ms.
1588 */
1589 static int ndi_latency_timer = 1;
1590
1591 /* Setup for the NDI FTDI-based USB devices, which requires hardwired
1592 * baudrate (19200 gets mapped to 1200000).
1593 *
1594 * Called from usbserial:serial_probe.
1595 */
1596 static int ftdi_NDI_device_setup(struct usb_serial *serial)
1597 {
1598 struct usb_device *udev = serial->dev;
1599 int latency = ndi_latency_timer;
1600 int rv = 0;
1601 char buf[1];
1602
1603 if (latency == 0)
1604 latency = 1;
1605 if (latency > 99)
1606 latency = 99;
1607
1608 dbg("%s setting NDI device latency to %d", __func__, latency);
1609 dev_info(&udev->dev, "NDI device with a latency value of %d", latency);
1610
1611 rv = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
1612 FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
1613 FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
1614 latency, 0, buf, 0, WDR_TIMEOUT);
1615 return 0;
1616 }
1617
1618 /*
1619 * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko
1620 * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from
1621 * userspace using openocd.
1622 */
1623 static int ftdi_jtag_probe(struct usb_serial *serial)
1624 {
1625 struct usb_device *udev = serial->dev;
1626 struct usb_interface *interface = serial->interface;
1627
1628 dbg("%s", __func__);
1629
1630 if (interface == udev->actconfig->interface[0]) {
1631 dev_info(&udev->dev,
1632 "Ignoring serial port reserved for JTAG\n");
1633 return -ENODEV;
1634 }
1635
1636 return 0;
1637 }
1638
1639 /*
1640 * The Matrix Orbital VK204-25-USB has an invalid IN endpoint.
1641 * We have to correct it if we want to read from it.
1642 */
1643 static int ftdi_mtxorb_hack_setup(struct usb_serial *serial)
1644 {
1645 struct usb_host_endpoint *ep = serial->dev->ep_in[1];
1646 struct usb_endpoint_descriptor *ep_desc = &ep->desc;
1647
1648 if (ep->enabled && ep_desc->wMaxPacketSize == 0) {
1649 ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
1650 dev_info(&serial->dev->dev,
1651 "Fixing invalid wMaxPacketSize on read pipe\n");
1652 }
1653
1654 return 0;
1655 }
1656
1657 static void ftdi_sio_priv_release(struct kref *k)
1658 {
1659 struct ftdi_private *priv = container_of(k, struct ftdi_private, kref);
1660
1661 kfree(priv);
1662 }
1663
1664 static int ftdi_sio_port_remove(struct usb_serial_port *port)
1665 {
1666 struct ftdi_private *priv = usb_get_serial_port_data(port);
1667
1668 dbg("%s", __func__);
1669
1670 remove_sysfs_attrs(port);
1671
1672 kref_put(&priv->kref, ftdi_sio_priv_release);
1673
1674 return 0;
1675 }
1676
1677 static int ftdi_submit_read_urb(struct usb_serial_port *port, gfp_t mem_flags)
1678 {
1679 struct urb *urb = port->read_urb;
1680 struct usb_serial *serial = port->serial;
1681 int result;
1682
1683 usb_fill_bulk_urb(urb, serial->dev,
1684 usb_rcvbulkpipe(serial->dev,
1685 port->bulk_in_endpointAddress),
1686 urb->transfer_buffer,
1687 urb->transfer_buffer_length,
1688 ftdi_read_bulk_callback, port);
1689 result = usb_submit_urb(urb, mem_flags);
1690 if (result)
1691 dev_err(&port->dev,
1692 "%s - failed submitting read urb, error %d\n",
1693 __func__, result);
1694 return result;
1695 }
1696
1697 static int ftdi_open(struct tty_struct *tty,
1698 struct usb_serial_port *port, struct file *filp)
1699 { /* ftdi_open */
1700 struct usb_device *dev = port->serial->dev;
1701 struct ftdi_private *priv = usb_get_serial_port_data(port);
1702 unsigned long flags;
1703
1704 int result = 0;
1705 char buf[1]; /* Needed for the usb_control_msg I think */
1706
1707 dbg("%s", __func__);
1708
1709 spin_lock_irqsave(&priv->tx_lock, flags);
1710 priv->tx_bytes = 0;
1711 spin_unlock_irqrestore(&priv->tx_lock, flags);
1712
1713 write_latency_timer(port);
1714
1715 /* No error checking for this (will get errors later anyway) */
1716 /* See ftdi_sio.h for description of what is reset */
1717 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1718 FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
1719 FTDI_SIO_RESET_SIO,
1720 priv->interface, buf, 0, WDR_TIMEOUT);
1721
1722 /* Termios defaults are set by usb_serial_init. We don't change
1723 port->tty->termios - this would lose speed settings, etc.
1724 This is same behaviour as serial.c/rs_open() - Kuba */
1725
1726 /* ftdi_set_termios will send usb control messages */
1727 if (tty)
1728 ftdi_set_termios(tty, port, tty->termios);
1729
1730 /* Not throttled */
1731 spin_lock_irqsave(&port->lock, flags);
1732 port->throttled = 0;
1733 port->throttle_req = 0;
1734 spin_unlock_irqrestore(&port->lock, flags);
1735
1736 /* Start reading from the device */
1737 result = ftdi_submit_read_urb(port, GFP_KERNEL);
1738 if (!result)
1739 kref_get(&priv->kref);
1740
1741 return result;
1742 } /* ftdi_open */
1743
1744
1745 static void ftdi_dtr_rts(struct usb_serial_port *port, int on)
1746 {
1747 struct ftdi_private *priv = usb_get_serial_port_data(port);
1748 char buf[1];
1749
1750 mutex_lock(&port->serial->disc_mutex);
1751 if (!port->serial->disconnected) {
1752 /* Disable flow control */
1753 if (!on && usb_control_msg(port->serial->dev,
1754 usb_sndctrlpipe(port->serial->dev, 0),
1755 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
1756 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
1757 0, priv->interface, buf, 0,
1758 WDR_TIMEOUT) < 0) {
1759 dev_err(&port->dev, "error from flowcontrol urb\n");
1760 }
1761 /* drop RTS and DTR */
1762 if (on)
1763 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1764 else
1765 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1766 }
1767 mutex_unlock(&port->serial->disc_mutex);
1768 }
1769
1770 /*
1771 * usbserial:__serial_close only calls ftdi_close if the point is open
1772 *
1773 * This only gets called when it is the last close
1774 *
1775 *
1776 */
1777
1778 static void ftdi_close(struct usb_serial_port *port)
1779 { /* ftdi_close */
1780 struct ftdi_private *priv = usb_get_serial_port_data(port);
1781
1782 dbg("%s", __func__);
1783
1784 /* shutdown our bulk read */
1785 usb_kill_urb(port->read_urb);
1786 kref_put(&priv->kref, ftdi_sio_priv_release);
1787 } /* ftdi_close */
1788
1789
1790
1791 /* The SIO requires the first byte to have:
1792 * B0 1
1793 * B1 0
1794 * B2..7 length of message excluding byte 0
1795 *
1796 * The new devices do not require this byte
1797 */
1798 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
1799 const unsigned char *buf, int count)
1800 { /* ftdi_write */
1801 struct ftdi_private *priv = usb_get_serial_port_data(port);
1802 struct urb *urb;
1803 unsigned char *buffer;
1804 int data_offset ; /* will be 1 for the SIO and 0 otherwise */
1805 int status;
1806 int transfer_size;
1807 unsigned long flags;
1808
1809 dbg("%s port %d, %d bytes", __func__, port->number, count);
1810
1811 if (count == 0) {
1812 dbg("write request of 0 bytes");
1813 return 0;
1814 }
1815 spin_lock_irqsave(&priv->tx_lock, flags);
1816 if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) {
1817 spin_unlock_irqrestore(&priv->tx_lock, flags);
1818 dbg("%s - write limit hit\n", __func__);
1819 return 0;
1820 }
1821 priv->tx_outstanding_urbs++;
1822 spin_unlock_irqrestore(&priv->tx_lock, flags);
1823
1824 data_offset = priv->write_offset;
1825 dbg("data_offset set to %d", data_offset);
1826
1827 /* Determine total transfer size */
1828 transfer_size = count;
1829 if (data_offset > 0) {
1830 /* Original sio needs control bytes too... */
1831 transfer_size += (data_offset *
1832 ((count + (priv->max_packet_size - 1 - data_offset)) /
1833 (priv->max_packet_size - data_offset)));
1834 }
1835
1836 buffer = kmalloc(transfer_size, GFP_ATOMIC);
1837 if (!buffer) {
1838 dev_err(&port->dev,
1839 "%s ran out of kernel memory for urb ...\n", __func__);
1840 count = -ENOMEM;
1841 goto error_no_buffer;
1842 }
1843
1844 urb = usb_alloc_urb(0, GFP_ATOMIC);
1845 if (!urb) {
1846 dev_err(&port->dev, "%s - no more free urbs\n", __func__);
1847 count = -ENOMEM;
1848 goto error_no_urb;
1849 }
1850
1851 /* Copy data */
1852 if (data_offset > 0) {
1853 /* Original sio requires control byte at start of
1854 each packet. */
1855 int user_pktsz = priv->max_packet_size - data_offset;
1856 int todo = count;
1857 unsigned char *first_byte = buffer;
1858 const unsigned char *current_position = buf;
1859
1860 while (todo > 0) {
1861 if (user_pktsz > todo)
1862 user_pktsz = todo;
1863 /* Write the control byte at the front of the packet*/
1864 *first_byte = 1 | ((user_pktsz) << 2);
1865 /* Copy data for packet */
1866 memcpy(first_byte + data_offset,
1867 current_position, user_pktsz);
1868 first_byte += user_pktsz + data_offset;
1869 current_position += user_pktsz;
1870 todo -= user_pktsz;
1871 }
1872 } else {
1873 /* No control byte required. */
1874 /* Copy in the data to send */
1875 memcpy(buffer, buf, count);
1876 }
1877
1878 usb_serial_debug_data(debug, &port->dev, __func__,
1879 transfer_size, buffer);
1880
1881 /* fill the buffer and send it */
1882 usb_fill_bulk_urb(urb, port->serial->dev,
1883 usb_sndbulkpipe(port->serial->dev,
1884 port->bulk_out_endpointAddress),
1885 buffer, transfer_size,
1886 ftdi_write_bulk_callback, port);
1887
1888 status = usb_submit_urb(urb, GFP_ATOMIC);
1889 if (status) {
1890 dev_err(&port->dev,
1891 "%s - failed submitting write urb, error %d\n",
1892 __func__, status);
1893 count = status;
1894 goto error;
1895 } else {
1896 spin_lock_irqsave(&priv->tx_lock, flags);
1897 priv->tx_outstanding_bytes += count;
1898 priv->tx_bytes += count;
1899 spin_unlock_irqrestore(&priv->tx_lock, flags);
1900 }
1901
1902 /* we are done with this urb, so let the host driver
1903 * really free it when it is finished with it */
1904 usb_free_urb(urb);
1905
1906 dbg("%s write returning: %d", __func__, count);
1907 return count;
1908 error:
1909 usb_free_urb(urb);
1910 error_no_urb:
1911 kfree(buffer);
1912 error_no_buffer:
1913 spin_lock_irqsave(&priv->tx_lock, flags);
1914 priv->tx_outstanding_urbs--;
1915 spin_unlock_irqrestore(&priv->tx_lock, flags);
1916 return count;
1917 } /* ftdi_write */
1918
1919
1920 /* This function may get called when the device is closed */
1921
1922 static void ftdi_write_bulk_callback(struct urb *urb)
1923 {
1924 unsigned long flags;
1925 struct usb_serial_port *port = urb->context;
1926 struct ftdi_private *priv;
1927 int data_offset; /* will be 1 for the SIO and 0 otherwise */
1928 unsigned long countback;
1929 int status = urb->status;
1930
1931 /* free up the transfer buffer, as usb_free_urb() does not do this */
1932 kfree(urb->transfer_buffer);
1933
1934 dbg("%s - port %d", __func__, port->number);
1935
1936 priv = usb_get_serial_port_data(port);
1937 if (!priv) {
1938 dbg("%s - bad port private data pointer - exiting", __func__);
1939 return;
1940 }
1941 /* account for transferred data */
1942 countback = urb->actual_length;
1943 data_offset = priv->write_offset;
1944 if (data_offset > 0) {
1945 /* Subtract the control bytes */
1946 countback -= (data_offset * DIV_ROUND_UP(countback, priv->max_packet_size));
1947 }
1948 spin_lock_irqsave(&priv->tx_lock, flags);
1949 --priv->tx_outstanding_urbs;
1950 priv->tx_outstanding_bytes -= countback;
1951 spin_unlock_irqrestore(&priv->tx_lock, flags);
1952
1953 if (status) {
1954 dbg("nonzero write bulk status received: %d", status);
1955 return;
1956 }
1957
1958 usb_serial_port_softint(port);
1959 } /* ftdi_write_bulk_callback */
1960
1961
1962 static int ftdi_write_room(struct tty_struct *tty)
1963 {
1964 struct usb_serial_port *port = tty->driver_data;
1965 struct ftdi_private *priv = usb_get_serial_port_data(port);
1966 int room;
1967 unsigned long flags;
1968
1969 dbg("%s - port %d", __func__, port->number);
1970
1971 spin_lock_irqsave(&priv->tx_lock, flags);
1972 if (priv->tx_outstanding_urbs < URB_UPPER_LIMIT) {
1973 /*
1974 * We really can take anything the user throws at us
1975 * but let's pick a nice big number to tell the tty
1976 * layer that we have lots of free space
1977 */
1978 room = 2048;
1979 } else {
1980 room = 0;
1981 }
1982 spin_unlock_irqrestore(&priv->tx_lock, flags);
1983 return room;
1984 }
1985
1986 static int ftdi_chars_in_buffer(struct tty_struct *tty)
1987 {
1988 struct usb_serial_port *port = tty->driver_data;
1989 struct ftdi_private *priv = usb_get_serial_port_data(port);
1990 int buffered;
1991 unsigned long flags;
1992
1993 dbg("%s - port %d", __func__, port->number);
1994
1995 spin_lock_irqsave(&priv->tx_lock, flags);
1996 buffered = (int)priv->tx_outstanding_bytes;
1997 spin_unlock_irqrestore(&priv->tx_lock, flags);
1998 if (buffered < 0) {
1999 dev_err(&port->dev, "%s outstanding tx bytes is negative!\n",
2000 __func__);
2001 buffered = 0;
2002 }
2003 return buffered;
2004 }
2005
2006 static int ftdi_process_packet(struct tty_struct *tty,
2007 struct usb_serial_port *port, struct ftdi_private *priv,
2008 char *packet, int len)
2009 {
2010 int i;
2011 char status;
2012 char flag;
2013 char *ch;
2014
2015 dbg("%s - port %d", __func__, port->number);
2016
2017 if (len < 2) {
2018 dbg("malformed packet");
2019 return 0;
2020 }
2021
2022 /* Compare new line status to the old one, signal if different/
2023 N.B. packet may be processed more than once, but differences
2024 are only processed once. */
2025 status = packet[0] & FTDI_STATUS_B0_MASK;
2026 if (status != priv->prev_status) {
2027 priv->diff_status |= status ^ priv->prev_status;
2028 wake_up_interruptible(&priv->delta_msr_wait);
2029 priv->prev_status = status;
2030 }
2031
2032 /*
2033 * Although the device uses a bitmask and hence can have multiple
2034 * errors on a packet - the order here sets the priority the error is
2035 * returned to the tty layer.
2036 */
2037 flag = TTY_NORMAL;
2038 if (packet[1] & FTDI_RS_OE) {
2039 flag = TTY_OVERRUN;
2040 dbg("OVERRRUN error");
2041 }
2042 if (packet[1] & FTDI_RS_BI) {
2043 flag = TTY_BREAK;
2044 dbg("BREAK received");
2045 usb_serial_handle_break(port);
2046 }
2047 if (packet[1] & FTDI_RS_PE) {
2048 flag = TTY_PARITY;
2049 dbg("PARITY error");
2050 }
2051 if (packet[1] & FTDI_RS_FE) {
2052 flag = TTY_FRAME;
2053 dbg("FRAMING error");
2054 }
2055
2056 len -= 2;
2057 if (!len)
2058 return 0; /* status only */
2059 ch = packet + 2;
2060
2061 if (!(port->console && port->sysrq) && flag == TTY_NORMAL)
2062 tty_insert_flip_string(tty, ch, len);
2063 else {
2064 for (i = 0; i < len; i++, ch++) {
2065 if (!usb_serial_handle_sysrq_char(tty, port, *ch))
2066 tty_insert_flip_char(tty, *ch, flag);
2067 }
2068 }
2069 return len;
2070 }
2071
2072 static void ftdi_process_read(struct usb_serial_port *port)
2073 {
2074 struct urb *urb = port->read_urb;
2075 struct tty_struct *tty;
2076 struct ftdi_private *priv = usb_get_serial_port_data(port);
2077 char *data = (char *)urb->transfer_buffer;
2078 int i;
2079 int len;
2080 int count = 0;
2081
2082 tty = tty_port_tty_get(&port->port);
2083 if (!tty)
2084 return;
2085
2086 for (i = 0; i < urb->actual_length; i += priv->max_packet_size) {
2087 len = min_t(int, urb->actual_length - i, priv->max_packet_size);
2088 count += ftdi_process_packet(tty, port, priv, &data[i], len);
2089 }
2090
2091 if (count)
2092 tty_flip_buffer_push(tty);
2093 tty_kref_put(tty);
2094 }
2095
2096 static void ftdi_read_bulk_callback(struct urb *urb)
2097 {
2098 struct usb_serial_port *port = urb->context;
2099 unsigned long flags;
2100
2101 dbg("%s - port %d", __func__, port->number);
2102
2103 if (urb->status) {
2104 dbg("%s - nonzero read bulk status received: %d",
2105 __func__, urb->status);
2106 return;
2107 }
2108
2109 usb_serial_debug_data(debug, &port->dev, __func__,
2110 urb->actual_length, urb->transfer_buffer);
2111 ftdi_process_read(port);
2112
2113 spin_lock_irqsave(&port->lock, flags);
2114 port->throttled = port->throttle_req;
2115 if (!port->throttled) {
2116 spin_unlock_irqrestore(&port->lock, flags);
2117 ftdi_submit_read_urb(port, GFP_ATOMIC);
2118 } else
2119 spin_unlock_irqrestore(&port->lock, flags);
2120 }
2121
2122 static void ftdi_break_ctl(struct tty_struct *tty, int break_state)
2123 {
2124 struct usb_serial_port *port = tty->driver_data;
2125 struct ftdi_private *priv = usb_get_serial_port_data(port);
2126 __u16 urb_value = 0;
2127 char buf[1];
2128
2129 /* break_state = -1 to turn on break, and 0 to turn off break */
2130 /* see drivers/char/tty_io.c to see it used */
2131 /* last_set_data_urb_value NEVER has the break bit set in it */
2132
2133 if (break_state)
2134 urb_value = priv->last_set_data_urb_value | FTDI_SIO_SET_BREAK;
2135 else
2136 urb_value = priv->last_set_data_urb_value;
2137
2138 if (usb_control_msg(port->serial->dev,
2139 usb_sndctrlpipe(port->serial->dev, 0),
2140 FTDI_SIO_SET_DATA_REQUEST,
2141 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2142 urb_value , priv->interface,
2143 buf, 0, WDR_TIMEOUT) < 0) {
2144 dev_err(&port->dev, "%s FAILED to enable/disable break state "
2145 "(state was %d)\n", __func__, break_state);
2146 }
2147
2148 dbg("%s break state is %d - urb is %d", __func__,
2149 break_state, urb_value);
2150
2151 }
2152
2153
2154 /* old_termios contains the original termios settings and tty->termios contains
2155 * the new setting to be used
2156 * WARNING: set_termios calls this with old_termios in kernel space
2157 */
2158
2159 static void ftdi_set_termios(struct tty_struct *tty,
2160 struct usb_serial_port *port, struct ktermios *old_termios)
2161 { /* ftdi_termios */
2162 struct usb_device *dev = port->serial->dev;
2163 struct ftdi_private *priv = usb_get_serial_port_data(port);
2164 struct ktermios *termios = tty->termios;
2165 unsigned int cflag = termios->c_cflag;
2166 __u16 urb_value; /* will hold the new flags */
2167 char buf[1]; /* Perhaps I should dynamically alloc this? */
2168
2169 /* Added for xon/xoff support */
2170 unsigned int iflag = termios->c_iflag;
2171 unsigned char vstop;
2172 unsigned char vstart;
2173
2174 dbg("%s", __func__);
2175
2176 /* Force baud rate if this device requires it, unless it is set to
2177 B0. */
2178 if (priv->force_baud && ((termios->c_cflag & CBAUD) != B0)) {
2179 dbg("%s: forcing baud rate for this device", __func__);
2180 tty_encode_baud_rate(tty, priv->force_baud,
2181 priv->force_baud);
2182 }
2183
2184 /* Force RTS-CTS if this device requires it. */
2185 if (priv->force_rtscts) {
2186 dbg("%s: forcing rtscts for this device", __func__);
2187 termios->c_cflag |= CRTSCTS;
2188 }
2189
2190 cflag = termios->c_cflag;
2191
2192 /* FIXME -For this cut I don't care if the line is really changing or
2193 not - so just do the change regardless - should be able to
2194 compare old_termios and tty->termios */
2195 /* NOTE These routines can get interrupted by
2196 ftdi_sio_read_bulk_callback - need to examine what this means -
2197 don't see any problems yet */
2198
2199 /* Set number of data bits, parity, stop bits */
2200
2201 termios->c_cflag &= ~CMSPAR;
2202
2203 urb_value = 0;
2204 urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 :
2205 FTDI_SIO_SET_DATA_STOP_BITS_1);
2206 urb_value |= (cflag & PARENB ?
2207 (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD :
2208 FTDI_SIO_SET_DATA_PARITY_EVEN) :
2209 FTDI_SIO_SET_DATA_PARITY_NONE);
2210 if (cflag & CSIZE) {
2211 switch (cflag & CSIZE) {
2212 case CS5: urb_value |= 5; dbg("Setting CS5"); break;
2213 case CS6: urb_value |= 6; dbg("Setting CS6"); break;
2214 case CS7: urb_value |= 7; dbg("Setting CS7"); break;
2215 case CS8: urb_value |= 8; dbg("Setting CS8"); break;
2216 default:
2217 dev_err(&port->dev, "CSIZE was set but not CS5-CS8\n");
2218 }
2219 }
2220
2221 /* This is needed by the break command since it uses the same command
2222 - but is or'ed with this value */
2223 priv->last_set_data_urb_value = urb_value;
2224
2225 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2226 FTDI_SIO_SET_DATA_REQUEST,
2227 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2228 urb_value , priv->interface,
2229 buf, 0, WDR_SHORT_TIMEOUT) < 0) {
2230 dev_err(&port->dev, "%s FAILED to set "
2231 "databits/stopbits/parity\n", __func__);
2232 }
2233
2234 /* Now do the baudrate */
2235 if ((cflag & CBAUD) == B0) {
2236 /* Disable flow control */
2237 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2238 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2239 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2240 0, priv->interface,
2241 buf, 0, WDR_TIMEOUT) < 0) {
2242 dev_err(&port->dev,
2243 "%s error from disable flowcontrol urb\n",
2244 __func__);
2245 }
2246 /* Drop RTS and DTR */
2247 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2248 } else {
2249 /* set the baudrate determined before */
2250 if (change_speed(tty, port))
2251 dev_err(&port->dev, "%s urb failed to set baudrate\n",
2252 __func__);
2253 /* Ensure RTS and DTR are raised when baudrate changed from 0 */
2254 if (!old_termios || (old_termios->c_cflag & CBAUD) == B0)
2255 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2256 }
2257
2258 /* Set flow control */
2259 /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */
2260 if (cflag & CRTSCTS) {
2261 dbg("%s Setting to CRTSCTS flow control", __func__);
2262 if (usb_control_msg(dev,
2263 usb_sndctrlpipe(dev, 0),
2264 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2265 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2266 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface),
2267 buf, 0, WDR_TIMEOUT) < 0) {
2268 dev_err(&port->dev,
2269 "urb failed to set to rts/cts flow control\n");
2270 }
2271
2272 } else {
2273 /*
2274 * Xon/Xoff code
2275 *
2276 * Check the IXOFF status in the iflag component of the
2277 * termios structure. If IXOFF is not set, the pre-xon/xoff
2278 * code is executed.
2279 */
2280 if (iflag & IXOFF) {
2281 dbg("%s request to enable xonxoff iflag=%04x",
2282 __func__, iflag);
2283 /* Try to enable the XON/XOFF on the ftdi_sio
2284 * Set the vstart and vstop -- could have been done up
2285 * above where a lot of other dereferencing is done but
2286 * that would be very inefficient as vstart and vstop
2287 * are not always needed.
2288 */
2289 vstart = termios->c_cc[VSTART];
2290 vstop = termios->c_cc[VSTOP];
2291 urb_value = (vstop << 8) | (vstart);
2292
2293 if (usb_control_msg(dev,
2294 usb_sndctrlpipe(dev, 0),
2295 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2296 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2297 urb_value , (FTDI_SIO_XON_XOFF_HS
2298 | priv->interface),
2299 buf, 0, WDR_TIMEOUT) < 0) {
2300 dev_err(&port->dev, "urb failed to set to "
2301 "xon/xoff flow control\n");
2302 }
2303 } else {
2304 /* else clause to only run if cflag ! CRTSCTS and iflag
2305 * ! XOFF. CHECKME Assuming XON/XOFF handled by tty
2306 * stack - not by device */
2307 dbg("%s Turning off hardware flow control", __func__);
2308 if (usb_control_msg(dev,
2309 usb_sndctrlpipe(dev, 0),
2310 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2311 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2312 0, priv->interface,
2313 buf, 0, WDR_TIMEOUT) < 0) {
2314 dev_err(&port->dev,
2315 "urb failed to clear flow control\n");
2316 }
2317 }
2318
2319 }
2320 return;
2321 }
2322
2323 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
2324 {
2325 struct usb_serial_port *port = tty->driver_data;
2326 struct ftdi_private *priv = usb_get_serial_port_data(port);
2327 unsigned char buf[2];
2328 int ret;
2329
2330 dbg("%s TIOCMGET", __func__);
2331 switch (priv->chip_type) {
2332 case SIO:
2333 /* Request the status from the device */
2334 ret = usb_control_msg(port->serial->dev,
2335 usb_rcvctrlpipe(port->serial->dev, 0),
2336 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2337 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2338 0, 0,
2339 buf, 1, WDR_TIMEOUT);
2340 if (ret < 0)
2341 return ret;
2342 break;
2343 case FT8U232AM:
2344 case FT232BM:
2345 case FT2232C:
2346 case FT232RL:
2347 case FT2232H:
2348 case FT4232H:
2349 /* the 8U232AM returns a two byte value (the sio is a 1 byte
2350 value) - in the same format as the data returned from the in
2351 point */
2352 ret = usb_control_msg(port->serial->dev,
2353 usb_rcvctrlpipe(port->serial->dev, 0),
2354 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2355 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2356 0, priv->interface,
2357 buf, 2, WDR_TIMEOUT);
2358 if (ret < 0)
2359 return ret;
2360 break;
2361 default:
2362 return -EFAULT;
2363 }
2364
2365 return (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
2366 (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) |
2367 (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) |
2368 (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0) |
2369 priv->last_dtr_rts;
2370 }
2371
2372 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
2373 unsigned int set, unsigned int clear)
2374 {
2375 struct usb_serial_port *port = tty->driver_data;
2376 dbg("%s TIOCMSET", __func__);
2377 return update_mctrl(port, set, clear);
2378 }
2379
2380
2381 static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
2382 unsigned int cmd, unsigned long arg)
2383 {
2384 struct usb_serial_port *port = tty->driver_data;
2385 struct ftdi_private *priv = usb_get_serial_port_data(port);
2386
2387 dbg("%s cmd 0x%04x", __func__, cmd);
2388
2389 /* Based on code from acm.c and others */
2390 switch (cmd) {
2391
2392 case TIOCGSERIAL: /* gets serial port data */
2393 return get_serial_info(port,
2394 (struct serial_struct __user *) arg);
2395
2396 case TIOCSSERIAL: /* sets serial port data */
2397 return set_serial_info(tty, port,
2398 (struct serial_struct __user *) arg);
2399
2400 /*
2401 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
2402 * - mask passed in arg for lines of interest
2403 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
2404 * Caller should use TIOCGICOUNT to see which one it was.
2405 *
2406 * This code is borrowed from linux/drivers/char/serial.c
2407 */
2408 case TIOCMIWAIT:
2409 while (priv != NULL) {
2410 interruptible_sleep_on(&priv->delta_msr_wait);
2411 /* see if a signal did it */
2412 if (signal_pending(current))
2413 return -ERESTARTSYS;
2414 else {
2415 char diff = priv->diff_status;
2416
2417 if (diff == 0)
2418 return -EIO; /* no change => error */
2419
2420 /* Consume all events */
2421 priv->diff_status = 0;
2422
2423 /* Return 0 if caller wanted to know about
2424 these bits */
2425 if (((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) ||
2426 ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) ||
2427 ((arg & TIOCM_CD) && (diff & FTDI_RS0_RLSD)) ||
2428 ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS))) {
2429 return 0;
2430 }
2431 /*
2432 * Otherwise caller can't care less about what
2433 * happened,and so we continue to wait for more
2434 * events.
2435 */
2436 }
2437 }
2438 return 0;
2439 default:
2440 break;
2441 }
2442 /* This is not necessarily an error - turns out the higher layers
2443 * will do some ioctls themselves (see comment above)
2444 */
2445 dbg("%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h", __func__, cmd);
2446 return -ENOIOCTLCMD;
2447 }
2448
2449 static void ftdi_throttle(struct tty_struct *tty)
2450 {
2451 struct usb_serial_port *port = tty->driver_data;
2452 unsigned long flags;
2453
2454 dbg("%s - port %d", __func__, port->number);
2455
2456 spin_lock_irqsave(&port->lock, flags);
2457 port->throttle_req = 1;
2458 spin_unlock_irqrestore(&port->lock, flags);
2459 }
2460
2461 void ftdi_unthrottle(struct tty_struct *tty)
2462 {
2463 struct usb_serial_port *port = tty->driver_data;
2464 int was_throttled;
2465 unsigned long flags;
2466
2467 dbg("%s - port %d", __func__, port->number);
2468
2469 spin_lock_irqsave(&port->lock, flags);
2470 was_throttled = port->throttled;
2471 port->throttled = port->throttle_req = 0;
2472 spin_unlock_irqrestore(&port->lock, flags);
2473
2474 /* Resubmit urb if throttled and open. */
2475 if (was_throttled && test_bit(ASYNCB_INITIALIZED, &port->port.flags))
2476 ftdi_submit_read_urb(port, GFP_KERNEL);
2477 }
2478
2479 static int __init ftdi_init(void)
2480 {
2481 int retval;
2482
2483 dbg("%s", __func__);
2484 if (vendor > 0 && product > 0) {
2485 /* Add user specified VID/PID to reserved element of table. */
2486 int i;
2487 for (i = 0; id_table_combined[i].idVendor; i++)
2488 ;
2489 id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
2490 id_table_combined[i].idVendor = vendor;
2491 id_table_combined[i].idProduct = product;
2492 }
2493 retval = usb_serial_register(&ftdi_sio_device);
2494 if (retval)
2495 goto failed_sio_register;
2496 retval = usb_register(&ftdi_driver);
2497 if (retval)
2498 goto failed_usb_register;
2499
2500 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
2501 DRIVER_DESC "\n");
2502 return 0;
2503 failed_usb_register:
2504 usb_serial_deregister(&ftdi_sio_device);
2505 failed_sio_register:
2506 return retval;
2507 }
2508
2509
2510 static void __exit ftdi_exit(void)
2511 {
2512
2513 dbg("%s", __func__);
2514
2515 usb_deregister(&ftdi_driver);
2516 usb_serial_deregister(&ftdi_sio_device);
2517
2518 }
2519
2520
2521 module_init(ftdi_init);
2522 module_exit(ftdi_exit);
2523
2524 MODULE_AUTHOR(DRIVER_AUTHOR);
2525 MODULE_DESCRIPTION(DRIVER_DESC);
2526 MODULE_LICENSE("GPL");
2527
2528 module_param(debug, bool, S_IRUGO | S_IWUSR);
2529 MODULE_PARM_DESC(debug, "Debug enabled or not");
2530 module_param(vendor, ushort, 0);
2531 MODULE_PARM_DESC(vendor, "User specified vendor ID (default="
2532 __MODULE_STRING(FTDI_VID)")");
2533 module_param(product, ushort, 0);
2534 MODULE_PARM_DESC(product, "User specified product ID");
2535
2536 module_param(ndi_latency_timer, int, S_IRUGO | S_IWUSR);
2537 MODULE_PARM_DESC(ndi_latency_timer, "NDI device latency timer override");
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