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Driver Core: devtmpfs - kernel-maintained tmpfs-based /dev
[linux/fpc-iii.git] / drivers / usb / serial / ftdi_sio.c
blob8fec5d4455c94334eaa12ab8c80c3f47566fd84b
1 /*
2 * USB FTDI SIO driver
3 *
4 * Copyright (C) 1999 - 2001
5 * Greg Kroah-Hartman (greg@kroah.com)
6 * Bill Ryder (bryder@sgi.com)
7 * Copyright (C) 2002
8 * Kuba Ober (kuba@mareimbrium.org)
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * See Documentation/usb/usb-serial.txt for more information on using this
16 * driver
17 *
18 * See http://ftdi-usb-sio.sourceforge.net for upto date testing info
19 * and extra documentation
20 *
21 * Change entries from 2004 and earlier can be found in versions of this
22 * file in kernel versions prior to the 2.6.24 release.
23 *
24 */
25
26 /* Bill Ryder - bryder@sgi.com - wrote the FTDI_SIO implementation */
27 /* Thanx to FTDI for so kindly providing details of the protocol required */
28 /* to talk to the device */
29 /* Thanx to gkh and the rest of the usb dev group for all code I have
30 assimilated :-) */
31
32 #include <linux/kernel.h>
33 #include <linux/errno.h>
34 #include <linux/init.h>
35 #include <linux/slab.h>
36 #include <linux/smp_lock.h>
37 #include <linux/tty.h>
38 #include <linux/tty_driver.h>
39 #include <linux/tty_flip.h>
40 #include <linux/module.h>
41 #include <linux/spinlock.h>
42 #include <linux/uaccess.h>
43 #include <linux/usb.h>
44 #include <linux/serial.h>
45 #include <linux/usb/serial.h>
46 #include "ftdi_sio.h"
47
48 /*
49 * Version Information
50 */
51 #define DRIVER_VERSION "v1.5.0"
52 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober <kuba@mareimbrium.org>"
53 #define DRIVER_DESC "USB FTDI Serial Converters Driver"
54
55 static int debug;
56 static __u16 vendor = FTDI_VID;
57 static __u16 product;
58
59 struct ftdi_private {
60 struct kref kref;
61 ftdi_chip_type_t chip_type;
62 /* type of device, either SIO or FT8U232AM */
63 int baud_base; /* baud base clock for divisor setting */
64 int custom_divisor; /* custom_divisor kludge, this is for
65 baud_base (different from what goes to the
66 chip!) */
67 __u16 last_set_data_urb_value ;
68 /* the last data state set - needed for doing
69 * a break
70 */
71 int write_offset; /* This is the offset in the usb data block to
72 * write the serial data - it varies between
73 * devices
74 */
75 int flags; /* some ASYNC_xxxx flags are supported */
76 unsigned long last_dtr_rts; /* saved modem control outputs */
77 wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
78 char prev_status, diff_status; /* Used for TIOCMIWAIT */
79 __u8 rx_flags; /* receive state flags (throttling) */
80 spinlock_t rx_lock; /* spinlock for receive state */
81 struct delayed_work rx_work;
82 struct usb_serial_port *port;
83 int rx_processed;
84 unsigned long rx_bytes;
85
86 __u16 interface; /* FT2232C, FT2232H or FT4232H port interface
87 (0 for FT232/245) */
88
89 speed_t force_baud; /* if non-zero, force the baud rate to
90 this value */
91 int force_rtscts; /* if non-zero, force RTS-CTS to always
92 be enabled */
93
94 unsigned int latency; /* latency setting in use */
95 spinlock_t tx_lock; /* spinlock for transmit state */
96 unsigned long tx_bytes;
97 unsigned long tx_outstanding_bytes;
98 unsigned long tx_outstanding_urbs;
99 unsigned short max_packet_size;
100 };
101
102 /* struct ftdi_sio_quirk is used by devices requiring special attention. */
103 struct ftdi_sio_quirk {
104 int (*probe)(struct usb_serial *);
105 /* Special settings for probed ports. */
106 void (*port_probe)(struct ftdi_private *);
107 };
108
109 static int ftdi_jtag_probe(struct usb_serial *serial);
110 static int ftdi_mtxorb_hack_setup(struct usb_serial *serial);
111 static int ftdi_NDI_device_setup(struct usb_serial *serial);
112 static void ftdi_USB_UIRT_setup(struct ftdi_private *priv);
113 static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv);
114
115 static struct ftdi_sio_quirk ftdi_jtag_quirk = {
116 .probe = ftdi_jtag_probe,
117 };
118
119 static struct ftdi_sio_quirk ftdi_mtxorb_hack_quirk = {
120 .probe = ftdi_mtxorb_hack_setup,
121 };
122
123 static struct ftdi_sio_quirk ftdi_NDI_device_quirk = {
124 .probe = ftdi_NDI_device_setup,
125 };
126
127 static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = {
128 .port_probe = ftdi_USB_UIRT_setup,
129 };
130
131 static struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = {
132 .port_probe = ftdi_HE_TIRA1_setup,
133 };
134
135 /*
136 * The 8U232AM has the same API as the sio except for:
137 * - it can support MUCH higher baudrates; up to:
138 * o 921600 for RS232 and 2000000 for RS422/485 at 48MHz
139 * o 230400 at 12MHz
140 * so .. 8U232AM's baudrate setting codes are different
141 * - it has a two byte status code.
142 * - it returns characters every 16ms (the FTDI does it every 40ms)
143 *
144 * the bcdDevice value is used to differentiate FT232BM and FT245BM from
145 * the earlier FT8U232AM and FT8U232BM. For now, include all known VID/PID
146 * combinations in both tables.
147 * FIXME: perhaps bcdDevice can also identify 12MHz FT8U232AM devices,
148 * but I don't know if those ever went into mass production. [Ian Abbott]
149 */
150
151
152
153 static struct usb_device_id id_table_combined [] = {
154 { USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) },
155 { USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) },
156 { USB_DEVICE(FTDI_VID, FTDI_CANDAPTER_PID) },
157 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_0_PID) },
158 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_1_PID) },
159 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_2_PID) },
160 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_3_PID) },
161 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_4_PID) },
162 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_5_PID) },
163 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_6_PID) },
164 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_7_PID) },
165 { USB_DEVICE(FTDI_VID, FTDI_ACTZWAVE_PID) },
166 { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) },
167 { USB_DEVICE(FTDI_VID, FTDI_IPLUS_PID) },
168 { USB_DEVICE(FTDI_VID, FTDI_IPLUS2_PID) },
169 { USB_DEVICE(FTDI_VID, FTDI_DMX4ALL) },
170 { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) },
171 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) },
172 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) },
173 { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) },
174 { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) },
175 { USB_DEVICE(FTDI_VID, FTDI_4232H_PID) },
176 { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) },
177 { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) },
178 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) },
179 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) },
180 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) },
181 { USB_DEVICE(FTDI_VID, FTDI_SPROG_II) },
182 { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) },
183 { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) },
184 { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) },
185 { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) },
186 { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) },
187 { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) },
188 { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) },
189 { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) },
190 { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) },
191 { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) },
192 { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) },
193 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) },
194 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) },
195 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) },
196 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) },
197 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) },
198 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) },
199 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) },
200 { USB_DEVICE(FTDI_VID, FTDI_R2000KU_TRUE_RNG) },
201 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0100_PID) },
202 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0101_PID) },
203 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0102_PID) },
204 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0103_PID) },
205 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0104_PID) },
206 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0105_PID) },
207 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0106_PID) },
208 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0107_PID) },
209 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0108_PID) },
210 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0109_PID) },
211 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010A_PID) },
212 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010B_PID) },
213 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010C_PID) },
214 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010D_PID) },
215 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010E_PID) },
216 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010F_PID) },
217 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0110_PID) },
218 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0111_PID) },
219 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0112_PID) },
220 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0113_PID) },
221 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0114_PID) },
222 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0115_PID) },
223 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0116_PID) },
224 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0117_PID) },
225 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0118_PID) },
226 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0119_PID) },
227 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011A_PID) },
228 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011B_PID) },
229 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011C_PID) },
230 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011D_PID) },
231 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011E_PID) },
232 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011F_PID) },
233 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0120_PID) },
234 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0121_PID) },
235 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0122_PID) },
236 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0123_PID) },
237 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0124_PID) },
238 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0125_PID) },
239 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0126_PID) },
240 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0127_PID),
241 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
242 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0128_PID) },
243 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0129_PID) },
244 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012A_PID) },
245 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012B_PID) },
246 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012C_PID),
247 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
248 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012D_PID) },
249 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012E_PID) },
250 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012F_PID) },
251 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0130_PID) },
252 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0131_PID) },
253 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0132_PID) },
254 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0133_PID) },
255 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0134_PID) },
256 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0135_PID) },
257 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0136_PID) },
258 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0137_PID) },
259 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0138_PID) },
260 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0139_PID) },
261 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013A_PID) },
262 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013B_PID) },
263 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013C_PID) },
264 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013D_PID) },
265 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013E_PID) },
266 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013F_PID) },
267 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0140_PID) },
268 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0141_PID) },
269 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0142_PID) },
270 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0143_PID) },
271 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0144_PID) },
272 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0145_PID) },
273 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0146_PID) },
274 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0147_PID) },
275 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0148_PID) },
276 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0149_PID) },
277 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014A_PID) },
278 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014B_PID) },
279 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014C_PID) },
280 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014D_PID) },
281 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014E_PID) },
282 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014F_PID) },
283 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0150_PID) },
284 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0151_PID) },
285 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0152_PID) },
286 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0153_PID),
287 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
288 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0154_PID),
289 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
290 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0155_PID),
291 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
292 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0156_PID),
293 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
294 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0157_PID),
295 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
296 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0158_PID),
297 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
298 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0159_PID) },
299 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015A_PID) },
300 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015B_PID) },
301 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015C_PID) },
302 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015D_PID) },
303 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015E_PID) },
304 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015F_PID) },
305 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0160_PID) },
306 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0161_PID) },
307 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0162_PID) },
308 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0163_PID) },
309 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0164_PID) },
310 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0165_PID) },
311 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0166_PID) },
312 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0167_PID) },
313 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0168_PID) },
314 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0169_PID) },
315 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016A_PID) },
316 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016B_PID) },
317 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016C_PID) },
318 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016D_PID) },
319 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016E_PID) },
320 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016F_PID) },
321 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0170_PID) },
322 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0171_PID) },
323 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0172_PID) },
324 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0173_PID) },
325 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0174_PID) },
326 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0175_PID) },
327 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0176_PID) },
328 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0177_PID) },
329 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0178_PID) },
330 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0179_PID) },
331 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017A_PID) },
332 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017B_PID) },
333 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017C_PID) },
334 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017D_PID) },
335 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017E_PID) },
336 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017F_PID) },
337 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0180_PID) },
338 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0181_PID) },
339 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0182_PID) },
340 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0183_PID) },
341 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0184_PID) },
342 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0185_PID) },
343 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0186_PID) },
344 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0187_PID) },
345 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0188_PID) },
346 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0189_PID) },
347 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018A_PID) },
348 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018B_PID) },
349 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018C_PID) },
350 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018D_PID) },
351 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018E_PID) },
352 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018F_PID) },
353 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0190_PID) },
354 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0191_PID) },
355 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0192_PID) },
356 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0193_PID) },
357 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0194_PID) },
358 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0195_PID) },
359 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0196_PID) },
360 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0197_PID) },
361 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0198_PID) },
362 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0199_PID) },
363 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019A_PID) },
364 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019B_PID) },
365 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019C_PID) },
366 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019D_PID) },
367 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019E_PID) },
368 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019F_PID) },
369 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A0_PID) },
370 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A1_PID) },
371 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A2_PID) },
372 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A3_PID) },
373 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A4_PID) },
374 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A5_PID) },
375 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A6_PID) },
376 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A7_PID) },
377 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A8_PID) },
378 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A9_PID) },
379 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AA_PID) },
380 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AB_PID) },
381 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AC_PID) },
382 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AD_PID) },
383 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AE_PID) },
384 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AF_PID) },
385 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B0_PID) },
386 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B1_PID) },
387 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B2_PID) },
388 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B3_PID) },
389 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B4_PID) },
390 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B5_PID) },
391 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B6_PID) },
392 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B7_PID) },
393 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B8_PID) },
394 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B9_PID) },
395 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BA_PID) },
396 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BB_PID) },
397 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BC_PID) },
398 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BD_PID) },
399 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BE_PID) },
400 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BF_PID) },
401 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C0_PID) },
402 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C1_PID) },
403 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C2_PID) },
404 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C3_PID) },
405 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C4_PID) },
406 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C5_PID) },
407 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C6_PID) },
408 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C7_PID) },
409 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C8_PID) },
410 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C9_PID) },
411 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CA_PID) },
412 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CB_PID) },
413 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CC_PID) },
414 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CD_PID) },
415 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CE_PID) },
416 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CF_PID) },
417 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D0_PID) },
418 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D1_PID) },
419 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D2_PID) },
420 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D3_PID) },
421 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D4_PID) },
422 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D5_PID) },
423 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D6_PID) },
424 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D7_PID) },
425 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D8_PID) },
426 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D9_PID) },
427 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DA_PID) },
428 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DB_PID) },
429 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DC_PID) },
430 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DD_PID) },
431 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DE_PID) },
432 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DF_PID) },
433 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E0_PID) },
434 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E1_PID) },
435 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E2_PID) },
436 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E3_PID) },
437 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E4_PID) },
438 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E5_PID) },
439 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E6_PID) },
440 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E7_PID) },
441 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E8_PID) },
442 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E9_PID) },
443 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EA_PID) },
444 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EB_PID) },
445 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EC_PID) },
446 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01ED_PID) },
447 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EE_PID) },
448 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EF_PID) },
449 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F0_PID) },
450 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F1_PID) },
451 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F2_PID) },
452 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F3_PID) },
453 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F4_PID) },
454 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F5_PID) },
455 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F6_PID) },
456 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F7_PID) },
457 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F8_PID) },
458 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F9_PID) },
459 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FA_PID) },
460 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FB_PID) },
461 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FC_PID) },
462 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FD_PID) },
463 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FE_PID) },
464 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FF_PID) },
465 { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) },
466 { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) },
467 { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) },
468 { USB_DEVICE(FTDI_VID, FTDI_USBX_707_PID) },
469 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) },
470 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) },
471 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) },
472 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) },
473 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2106_PID) },
474 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) },
475 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) },
476 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) },
477 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) },
478 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) },
479 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) },
480 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) },
481 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) },
482 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) },
483 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) },
484 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) },
485 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) },
486 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) },
487 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) },
488 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) },
489 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) },
490 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) },
491 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) },
492 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) },
493 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) },
494 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) },
495 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) },
496 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) },
497 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) },
498 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) },
499 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) },
500 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) },
501 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) },
502 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) },
503 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) },
504 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) },
505 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) },
506 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) },
507 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) },
508 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) },
509 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) },
510 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) },
511 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) },
512 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) },
513 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) },
514 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) },
515 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) },
516 { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) },
517 { USB_DEVICE(OCT_VID, OCT_US101_PID) },
518 { USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID),
519 .driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk },
520 { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID),
521 .driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk },
522 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) },
523 { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) },
524 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) },
525 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) },
526 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) },
527 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) },
528 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) },
529 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) },
530 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) },
531 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) },
532 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) },
533 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) },
534 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) },
535 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) },
536 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) },
537 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) },
538 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) },
539 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) },
540 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) },
541 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) },
542 { USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) },
543 { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) },
544 { USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) },
545 { USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) },
546 { USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) },
547 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) },
548 { USB_DEVICE(FTDI_VID, FTDI_IBS_US485_PID) },
549 { USB_DEVICE(FTDI_VID, FTDI_IBS_PICPRO_PID) },
550 { USB_DEVICE(FTDI_VID, FTDI_IBS_PCMCIA_PID) },
551 { USB_DEVICE(FTDI_VID, FTDI_IBS_PK1_PID) },
552 { USB_DEVICE(FTDI_VID, FTDI_IBS_RS232MON_PID) },
553 { USB_DEVICE(FTDI_VID, FTDI_IBS_APP70_PID) },
554 { USB_DEVICE(FTDI_VID, FTDI_IBS_PEDO_PID) },
555 { USB_DEVICE(FTDI_VID, FTDI_IBS_PROD_PID) },
556 /*
557 * Due to many user requests for multiple ELV devices we enable
558 * them by default.
559 */
560 { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) },
561 { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) },
562 { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) },
563 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) },
564 { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) },
565 { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) },
566 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) },
567 { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) },
568 { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) },
569 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) },
570 { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) },
571 { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) },
572 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) },
573 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) },
574 { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) },
575 { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) },
576 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) },
577 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) },
578 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1010PC_PID) },
579 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) },
580 { USB_DEVICE(FTDI_VID, FTDI_ELV_HS485_PID) },
581 { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) },
582 { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) },
583 { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) },
584 { USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) },
585 { USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) },
586 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) },
587 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) },
588 { USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) },
589 { USB_DEVICE(FTDI_VID, FTDI_CCSLOAD_N_GO_3_PID) },
590 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU64_4_PID) },
591 { USB_DEVICE(FTDI_VID, FTDI_CCSPRIME8_5_PID) },
592 { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) },
593 { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) },
594 { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) },
595 { USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) },
596 { USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) },
597 { USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) },
598 { USB_DEVICE(FTDI_VID, FTDI_OCEANIC_PID) },
599 { USB_DEVICE(TTI_VID, TTI_QL355P_PID) },
600 { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) },
601 { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) },
602 { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) },
603 { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) },
604 { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) },
605 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) },
606 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) },
607 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) },
608 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) },
609 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) },
610 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) },
611 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) },
612 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) },
613 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) },
614 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) },
615 { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
616 { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) },
617 { USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) },
618 { USB_DEVICE(FTDI_VID, FTDI_MHAM_YS_PID) },
619 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) },
620 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) },
621 { USB_DEVICE(FTDI_VID, FTDI_MHAM_IC_PID) },
622 { USB_DEVICE(FTDI_VID, FTDI_MHAM_DB9_PID) },
623 { USB_DEVICE(FTDI_VID, FTDI_MHAM_RS232_PID) },
624 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y9_PID) },
625 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) },
626 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) },
627 { USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) },
628 { USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) },
629 { USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) },
630 { USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) },
631 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) },
632 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) },
633 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) },
634 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HRC_PID) },
635 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16IC_PID) },
636 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) },
637 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) },
638 { USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) },
639 { USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) },
640 { USB_DEVICE(FTDI_VID, FTDI_ECLO_COM_1WIRE_PID) },
641 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) },
642 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) },
643 { USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) },
644 { USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) },
645 { USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) },
646 { USB_DEVICE(ICOM_ID1_VID, ICOM_ID1_PID) },
647 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_TMU_PID) },
648 { USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) },
649 { USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) },
650 { USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) },
651 { USB_DEVICE(TESTO_VID, TESTO_USB_INTERFACE_PID) },
652 { USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) },
653 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) },
654 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) },
655 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) },
656 { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) },
657 { USB_DEVICE(FTDI_VID, FTDI_NDI_HUC_PID),
658 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
659 { USB_DEVICE(FTDI_VID, FTDI_NDI_SPECTRA_SCU_PID),
660 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
661 { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_2_PID),
662 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
663 { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_3_PID),
664 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
665 { USB_DEVICE(FTDI_VID, FTDI_NDI_AURORA_SCU_PID),
666 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
667 { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
668 { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) },
669 { USB_DEVICE(FTDI_VID, FTDI_PHI_FISCO_PID) },
670 { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) },
671 { USB_DEVICE(FTDI_VID, FTDI_ELSTER_UNICOM_PID) },
672 { USB_DEVICE(FTDI_VID, FTDI_PROPOX_JTAGCABLEII_PID) },
673 { USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID),
674 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
675 { USB_DEVICE(FIC_VID, FIC_NEO1973_DEBUG_PID),
676 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
677 { USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID),
678 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
679 { USB_DEVICE(FTDI_VID, LMI_LM3S_DEVEL_BOARD_PID),
680 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
681 { USB_DEVICE(FTDI_VID, LMI_LM3S_EVAL_BOARD_PID),
682 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
683 { USB_DEVICE(FTDI_VID, FTDI_TURTELIZER_PID),
684 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
685 { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
686 { USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) },
687 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO4x4_PID) },
688 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DGQG_PID) },
689 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DUSB_PID) },
690 { USB_DEVICE(ALTI2_VID, ALTI2_N3_PID) },
691 { USB_DEVICE(FTDI_VID, DIEBOLD_BCS_SE923_PID) },
692 { USB_DEVICE(ATMEL_VID, STK541_PID) },
693 { USB_DEVICE(DE_VID, STB_PID) },
694 { USB_DEVICE(DE_VID, WHT_PID) },
695 { USB_DEVICE(ADI_VID, ADI_GNICE_PID),
696 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
697 { USB_DEVICE(JETI_VID, JETI_SPC1201_PID) },
698 { USB_DEVICE(MARVELL_VID, MARVELL_SHEEVAPLUG_PID),
699 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
700 { USB_DEVICE(LARSENBRUSGAARD_VID, LB_ALTITRACK_PID) },
701 { USB_DEVICE(GN_OTOMETRICS_VID, AURICAL_USB_PID) },
702 { USB_DEVICE(BAYER_VID, BAYER_CONTOUR_CABLE_PID) },
703 { USB_DEVICE(FTDI_VID, MARVELL_OPENRD_PID),
704 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
705 { }, /* Optional parameter entry */
706 { } /* Terminating entry */
707 };
708
709 MODULE_DEVICE_TABLE(usb, id_table_combined);
710
711 static struct usb_driver ftdi_driver = {
712 .name = "ftdi_sio",
713 .probe = usb_serial_probe,
714 .disconnect = usb_serial_disconnect,
715 .id_table = id_table_combined,
716 .no_dynamic_id = 1,
717 };
718
719 static const char *ftdi_chip_name[] = {
720 [SIO] = "SIO", /* the serial part of FT8U100AX */
721 [FT8U232AM] = "FT8U232AM",
722 [FT232BM] = "FT232BM",
723 [FT2232C] = "FT2232C",
724 [FT232RL] = "FT232RL",
725 [FT2232H] = "FT2232H",
726 [FT4232H] = "FT4232H"
727 };
728
729
730 /* Constants for read urb and write urb */
731 #define BUFSZ 512
732
733 /* rx_flags */
734 #define THROTTLED 0x01
735 #define ACTUALLY_THROTTLED 0x02
736
737 /* Used for TIOCMIWAIT */
738 #define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD)
739 #define FTDI_STATUS_B1_MASK (FTDI_RS_BI)
740 /* End TIOCMIWAIT */
741
742 #define FTDI_IMPL_ASYNC_FLAGS = (ASYNC_SPD_HI | ASYNC_SPD_VHI \
743 | ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP)
744
745 /* function prototypes for a FTDI serial converter */
746 static int ftdi_sio_probe(struct usb_serial *serial,
747 const struct usb_device_id *id);
748 static int ftdi_sio_port_probe(struct usb_serial_port *port);
749 static int ftdi_sio_port_remove(struct usb_serial_port *port);
750 static int ftdi_open(struct tty_struct *tty,
751 struct usb_serial_port *port, struct file *filp);
752 static void ftdi_close(struct usb_serial_port *port);
753 static void ftdi_dtr_rts(struct usb_serial_port *port, int on);
754 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
755 const unsigned char *buf, int count);
756 static int ftdi_write_room(struct tty_struct *tty);
757 static int ftdi_chars_in_buffer(struct tty_struct *tty);
758 static void ftdi_write_bulk_callback(struct urb *urb);
759 static void ftdi_read_bulk_callback(struct urb *urb);
760 static void ftdi_process_read(struct work_struct *work);
761 static void ftdi_set_termios(struct tty_struct *tty,
762 struct usb_serial_port *port, struct ktermios *old);
763 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file);
764 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
765 unsigned int set, unsigned int clear);
766 static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
767 unsigned int cmd, unsigned long arg);
768 static void ftdi_break_ctl(struct tty_struct *tty, int break_state);
769 static void ftdi_throttle(struct tty_struct *tty);
770 static void ftdi_unthrottle(struct tty_struct *tty);
771
772 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base);
773 static unsigned short int ftdi_232am_baud_to_divisor(int baud);
774 static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base);
775 static __u32 ftdi_232bm_baud_to_divisor(int baud);
776 static __u32 ftdi_2232h_baud_base_to_divisor(int baud, int base);
777 static __u32 ftdi_2232h_baud_to_divisor(int baud);
778
779 static struct usb_serial_driver ftdi_sio_device = {
780 .driver = {
781 .owner = THIS_MODULE,
782 .name = "ftdi_sio",
783 },
784 .description = "FTDI USB Serial Device",
785 .usb_driver = &ftdi_driver ,
786 .id_table = id_table_combined,
787 .num_ports = 1,
788 .probe = ftdi_sio_probe,
789 .port_probe = ftdi_sio_port_probe,
790 .port_remove = ftdi_sio_port_remove,
791 .open = ftdi_open,
792 .close = ftdi_close,
793 .dtr_rts = ftdi_dtr_rts,
794 .throttle = ftdi_throttle,
795 .unthrottle = ftdi_unthrottle,
796 .write = ftdi_write,
797 .write_room = ftdi_write_room,
798 .chars_in_buffer = ftdi_chars_in_buffer,
799 .read_bulk_callback = ftdi_read_bulk_callback,
800 .write_bulk_callback = ftdi_write_bulk_callback,
801 .tiocmget = ftdi_tiocmget,
802 .tiocmset = ftdi_tiocmset,
803 .ioctl = ftdi_ioctl,
804 .set_termios = ftdi_set_termios,
805 .break_ctl = ftdi_break_ctl,
806 };
807
808
809 #define WDR_TIMEOUT 5000 /* default urb timeout */
810 #define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */
811
812 /* High and low are for DTR, RTS etc etc */
813 #define HIGH 1
814 #define LOW 0
815
816 /* number of outstanding urbs to prevent userspace DoS from happening */
817 #define URB_UPPER_LIMIT 42
818
819 /*
820 * ***************************************************************************
821 * Utility functions
822 * ***************************************************************************
823 */
824
825 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base)
826 {
827 unsigned short int divisor;
828 /* divisor shifted 3 bits to the left */
829 int divisor3 = base / 2 / baud;
830 if ((divisor3 & 0x7) == 7)
831 divisor3++; /* round x.7/8 up to x+1 */
832 divisor = divisor3 >> 3;
833 divisor3 &= 0x7;
834 if (divisor3 == 1)
835 divisor |= 0xc000;
836 else if (divisor3 >= 4)
837 divisor |= 0x4000;
838 else if (divisor3 != 0)
839 divisor |= 0x8000;
840 else if (divisor == 1)
841 divisor = 0; /* special case for maximum baud rate */
842 return divisor;
843 }
844
845 static unsigned short int ftdi_232am_baud_to_divisor(int baud)
846 {
847 return ftdi_232am_baud_base_to_divisor(baud, 48000000);
848 }
849
850 static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base)
851 {
852 static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
853 __u32 divisor;
854 /* divisor shifted 3 bits to the left */
855 int divisor3 = base / 2 / baud;
856 divisor = divisor3 >> 3;
857 divisor |= (__u32)divfrac[divisor3 & 0x7] << 14;
858 /* Deal with special cases for highest baud rates. */
859 if (divisor == 1)
860 divisor = 0;
861 else if (divisor == 0x4001)
862 divisor = 1;
863 return divisor;
864 }
865
866 static __u32 ftdi_232bm_baud_to_divisor(int baud)
867 {
868 return ftdi_232bm_baud_base_to_divisor(baud, 48000000);
869 }
870
871 static __u32 ftdi_2232h_baud_base_to_divisor(int baud, int base)
872 {
873 static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
874 __u32 divisor;
875 int divisor3;
876
877 /* hi-speed baud rate is 10-bit sampling instead of 16-bit */
878 divisor3 = (base / 10 / baud) * 8;
879
880 divisor = divisor3 >> 3;
881 divisor |= (__u32)divfrac[divisor3 & 0x7] << 14;
882 /* Deal with special cases for highest baud rates. */
883 if (divisor == 1)
884 divisor = 0;
885 else if (divisor == 0x4001)
886 divisor = 1;
887 /*
888 * Set this bit to turn off a divide by 2.5 on baud rate generator
889 * This enables baud rates up to 12Mbaud but cannot reach below 1200
890 * baud with this bit set
891 */
892 divisor |= 0x00020000;
893 return divisor;
894 }
895
896 static __u32 ftdi_2232h_baud_to_divisor(int baud)
897 {
898 return ftdi_2232h_baud_base_to_divisor(baud, 120000000);
899 }
900
901 #define set_mctrl(port, set) update_mctrl((port), (set), 0)
902 #define clear_mctrl(port, clear) update_mctrl((port), 0, (clear))
903
904 static int update_mctrl(struct usb_serial_port *port, unsigned int set,
905 unsigned int clear)
906 {
907 struct ftdi_private *priv = usb_get_serial_port_data(port);
908 char *buf;
909 unsigned urb_value;
910 int rv;
911
912 if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
913 dbg("%s - DTR|RTS not being set|cleared", __func__);
914 return 0; /* no change */
915 }
916
917 buf = kmalloc(1, GFP_NOIO);
918 if (!buf)
919 return -ENOMEM;
920
921 clear &= ~set; /* 'set' takes precedence over 'clear' */
922 urb_value = 0;
923 if (clear & TIOCM_DTR)
924 urb_value |= FTDI_SIO_SET_DTR_LOW;
925 if (clear & TIOCM_RTS)
926 urb_value |= FTDI_SIO_SET_RTS_LOW;
927 if (set & TIOCM_DTR)
928 urb_value |= FTDI_SIO_SET_DTR_HIGH;
929 if (set & TIOCM_RTS)
930 urb_value |= FTDI_SIO_SET_RTS_HIGH;
931 rv = usb_control_msg(port->serial->dev,
932 usb_sndctrlpipe(port->serial->dev, 0),
933 FTDI_SIO_SET_MODEM_CTRL_REQUEST,
934 FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
935 urb_value, priv->interface,
936 buf, 0, WDR_TIMEOUT);
937
938 kfree(buf);
939 if (rv < 0) {
940 dbg("%s Error from MODEM_CTRL urb: DTR %s, RTS %s",
941 __func__,
942 (set & TIOCM_DTR) ? "HIGH" :
943 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
944 (set & TIOCM_RTS) ? "HIGH" :
945 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
946 } else {
947 dbg("%s - DTR %s, RTS %s", __func__,
948 (set & TIOCM_DTR) ? "HIGH" :
949 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
950 (set & TIOCM_RTS) ? "HIGH" :
951 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
952 /* FIXME: locking on last_dtr_rts */
953 priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set;
954 }
955 return rv;
956 }
957
958
959 static __u32 get_ftdi_divisor(struct tty_struct *tty,
960 struct usb_serial_port *port)
961 { /* get_ftdi_divisor */
962 struct ftdi_private *priv = usb_get_serial_port_data(port);
963 __u32 div_value = 0;
964 int div_okay = 1;
965 int baud;
966
967 /*
968 * The logic involved in setting the baudrate can be cleanly split into
969 * 3 steps.
970 * 1. Standard baud rates are set in tty->termios->c_cflag
971 * 2. If these are not enough, you can set any speed using alt_speed as
972 * follows:
973 * - set tty->termios->c_cflag speed to B38400
974 * - set your real speed in tty->alt_speed; it gets ignored when
975 * alt_speed==0, (or)
976 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
977 * follows:
978 * flags & ASYNC_SPD_MASK == ASYNC_SPD_[HI, VHI, SHI, WARP],
979 * this just sets alt_speed to (HI: 57600, VHI: 115200,
980 * SHI: 230400, WARP: 460800)
981 * ** Steps 1, 2 are done courtesy of tty_get_baud_rate
982 * 3. You can also set baud rate by setting custom divisor as follows
983 * - set tty->termios->c_cflag speed to B38400
984 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
985 * follows:
986 * o flags & ASYNC_SPD_MASK == ASYNC_SPD_CUST
987 * o custom_divisor set to baud_base / your_new_baudrate
988 * ** Step 3 is done courtesy of code borrowed from serial.c
989 * I should really spend some time and separate + move this common
990 * code to serial.c, it is replicated in nearly every serial driver
991 * you see.
992 */
993
994 /* 1. Get the baud rate from the tty settings, this observes
995 alt_speed hack */
996
997 baud = tty_get_baud_rate(tty);
998 dbg("%s - tty_get_baud_rate reports speed %d", __func__, baud);
999
1000 /* 2. Observe async-compatible custom_divisor hack, update baudrate
1001 if needed */
1002
1003 if (baud == 38400 &&
1004 ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
1005 (priv->custom_divisor)) {
1006 baud = priv->baud_base / priv->custom_divisor;
1007 dbg("%s - custom divisor %d sets baud rate to %d",
1008 __func__, priv->custom_divisor, baud);
1009 }
1010
1011 /* 3. Convert baudrate to device-specific divisor */
1012
1013 if (!baud)
1014 baud = 9600;
1015 switch (priv->chip_type) {
1016 case SIO: /* SIO chip */
1017 switch (baud) {
1018 case 300: div_value = ftdi_sio_b300; break;
1019 case 600: div_value = ftdi_sio_b600; break;
1020 case 1200: div_value = ftdi_sio_b1200; break;
1021 case 2400: div_value = ftdi_sio_b2400; break;
1022 case 4800: div_value = ftdi_sio_b4800; break;
1023 case 9600: div_value = ftdi_sio_b9600; break;
1024 case 19200: div_value = ftdi_sio_b19200; break;
1025 case 38400: div_value = ftdi_sio_b38400; break;
1026 case 57600: div_value = ftdi_sio_b57600; break;
1027 case 115200: div_value = ftdi_sio_b115200; break;
1028 } /* baud */
1029 if (div_value == 0) {
1030 dbg("%s - Baudrate (%d) requested is not supported",
1031 __func__, baud);
1032 div_value = ftdi_sio_b9600;
1033 baud = 9600;
1034 div_okay = 0;
1035 }
1036 break;
1037 case FT8U232AM: /* 8U232AM chip */
1038 if (baud <= 3000000) {
1039 div_value = ftdi_232am_baud_to_divisor(baud);
1040 } else {
1041 dbg("%s - Baud rate too high!", __func__);
1042 baud = 9600;
1043 div_value = ftdi_232am_baud_to_divisor(9600);
1044 div_okay = 0;
1045 }
1046 break;
1047 case FT232BM: /* FT232BM chip */
1048 case FT2232C: /* FT2232C chip */
1049 case FT232RL:
1050 if (baud <= 3000000) {
1051 __u16 product_id = le16_to_cpu(
1052 port->serial->dev->descriptor.idProduct);
1053 if (((FTDI_NDI_HUC_PID == product_id) ||
1054 (FTDI_NDI_SPECTRA_SCU_PID == product_id) ||
1055 (FTDI_NDI_FUTURE_2_PID == product_id) ||
1056 (FTDI_NDI_FUTURE_3_PID == product_id) ||
1057 (FTDI_NDI_AURORA_SCU_PID == product_id)) &&
1058 (baud == 19200)) {
1059 baud = 1200000;
1060 }
1061 div_value = ftdi_232bm_baud_to_divisor(baud);
1062 } else {
1063 dbg("%s - Baud rate too high!", __func__);
1064 div_value = ftdi_232bm_baud_to_divisor(9600);
1065 div_okay = 0;
1066 baud = 9600;
1067 }
1068 break;
1069 case FT2232H: /* FT2232H chip */
1070 case FT4232H: /* FT4232H chip */
1071 if ((baud <= 12000000) & (baud >= 1200)) {
1072 div_value = ftdi_2232h_baud_to_divisor(baud);
1073 } else if (baud < 1200) {
1074 div_value = ftdi_232bm_baud_to_divisor(baud);
1075 } else {
1076 dbg("%s - Baud rate too high!", __func__);
1077 div_value = ftdi_232bm_baud_to_divisor(9600);
1078 div_okay = 0;
1079 baud = 9600;
1080 }
1081 break;
1082 } /* priv->chip_type */
1083
1084 if (div_okay) {
1085 dbg("%s - Baud rate set to %d (divisor 0x%lX) on chip %s",
1086 __func__, baud, (unsigned long)div_value,
1087 ftdi_chip_name[priv->chip_type]);
1088 }
1089
1090 tty_encode_baud_rate(tty, baud, baud);
1091 return div_value;
1092 }
1093
1094 static int change_speed(struct tty_struct *tty, struct usb_serial_port *port)
1095 {
1096 struct ftdi_private *priv = usb_get_serial_port_data(port);
1097 char *buf;
1098 __u16 urb_value;
1099 __u16 urb_index;
1100 __u32 urb_index_value;
1101 int rv;
1102
1103 buf = kmalloc(1, GFP_NOIO);
1104 if (!buf)
1105 return -ENOMEM;
1106
1107 urb_index_value = get_ftdi_divisor(tty, port);
1108 urb_value = (__u16)urb_index_value;
1109 urb_index = (__u16)(urb_index_value >> 16);
1110 if (priv->interface) { /* FT2232C */
1111 urb_index = (__u16)((urb_index << 8) | priv->interface);
1112 }
1113
1114 rv = usb_control_msg(port->serial->dev,
1115 usb_sndctrlpipe(port->serial->dev, 0),
1116 FTDI_SIO_SET_BAUDRATE_REQUEST,
1117 FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
1118 urb_value, urb_index,
1119 buf, 0, WDR_SHORT_TIMEOUT);
1120
1121 kfree(buf);
1122 return rv;
1123 }
1124
1125 static int write_latency_timer(struct usb_serial_port *port)
1126 {
1127 struct ftdi_private *priv = usb_get_serial_port_data(port);
1128 struct usb_device *udev = port->serial->dev;
1129 char buf[1];
1130 int rv = 0;
1131 int l = priv->latency;
1132
1133 if (priv->flags & ASYNC_LOW_LATENCY)
1134 l = 1;
1135
1136 dbg("%s: setting latency timer = %i", __func__, l);
1137
1138 rv = usb_control_msg(udev,
1139 usb_sndctrlpipe(udev, 0),
1140 FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
1141 FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
1142 l, priv->interface,
1143 buf, 0, WDR_TIMEOUT);
1144
1145 if (rv < 0)
1146 dev_err(&port->dev, "Unable to write latency timer: %i\n", rv);
1147 return rv;
1148 }
1149
1150 static int read_latency_timer(struct usb_serial_port *port)
1151 {
1152 struct ftdi_private *priv = usb_get_serial_port_data(port);
1153 struct usb_device *udev = port->serial->dev;
1154 unsigned short latency = 0;
1155 int rv = 0;
1156
1157
1158 dbg("%s", __func__);
1159
1160 rv = usb_control_msg(udev,
1161 usb_rcvctrlpipe(udev, 0),
1162 FTDI_SIO_GET_LATENCY_TIMER_REQUEST,
1163 FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE,
1164 0, priv->interface,
1165 (char *) &latency, 1, WDR_TIMEOUT);
1166
1167 if (rv < 0) {
1168 dev_err(&port->dev, "Unable to read latency timer: %i\n", rv);
1169 return -EIO;
1170 }
1171 return latency;
1172 }
1173
1174 static int get_serial_info(struct usb_serial_port *port,
1175 struct serial_struct __user *retinfo)
1176 {
1177 struct ftdi_private *priv = usb_get_serial_port_data(port);
1178 struct serial_struct tmp;
1179
1180 if (!retinfo)
1181 return -EFAULT;
1182 memset(&tmp, 0, sizeof(tmp));
1183 tmp.flags = priv->flags;
1184 tmp.baud_base = priv->baud_base;
1185 tmp.custom_divisor = priv->custom_divisor;
1186 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1187 return -EFAULT;
1188 return 0;
1189 } /* get_serial_info */
1190
1191
1192 static int set_serial_info(struct tty_struct *tty,
1193 struct usb_serial_port *port, struct serial_struct __user *newinfo)
1194 { /* set_serial_info */
1195 struct ftdi_private *priv = usb_get_serial_port_data(port);
1196 struct serial_struct new_serial;
1197 struct ftdi_private old_priv;
1198
1199 if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
1200 return -EFAULT;
1201
1202 lock_kernel();
1203 old_priv = *priv;
1204
1205 /* Do error checking and permission checking */
1206
1207 if (!capable(CAP_SYS_ADMIN)) {
1208 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
1209 (priv->flags & ~ASYNC_USR_MASK))) {
1210 unlock_kernel();
1211 return -EPERM;
1212 }
1213 priv->flags = ((priv->flags & ~ASYNC_USR_MASK) |
1214 (new_serial.flags & ASYNC_USR_MASK));
1215 priv->custom_divisor = new_serial.custom_divisor;
1216 goto check_and_exit;
1217 }
1218
1219 if ((new_serial.baud_base != priv->baud_base) &&
1220 (new_serial.baud_base < 9600)) {
1221 unlock_kernel();
1222 return -EINVAL;
1223 }
1224
1225 /* Make the changes - these are privileged changes! */
1226
1227 priv->flags = ((priv->flags & ~ASYNC_FLAGS) |
1228 (new_serial.flags & ASYNC_FLAGS));
1229 priv->custom_divisor = new_serial.custom_divisor;
1230
1231 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1232 write_latency_timer(port);
1233
1234 check_and_exit:
1235 if ((old_priv.flags & ASYNC_SPD_MASK) !=
1236 (priv->flags & ASYNC_SPD_MASK)) {
1237 if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
1238 tty->alt_speed = 57600;
1239 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
1240 tty->alt_speed = 115200;
1241 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
1242 tty->alt_speed = 230400;
1243 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
1244 tty->alt_speed = 460800;
1245 else
1246 tty->alt_speed = 0;
1247 }
1248 if (((old_priv.flags & ASYNC_SPD_MASK) !=
1249 (priv->flags & ASYNC_SPD_MASK)) ||
1250 (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
1251 (old_priv.custom_divisor != priv->custom_divisor))) {
1252 unlock_kernel();
1253 change_speed(tty, port);
1254 }
1255 else
1256 unlock_kernel();
1257 return 0;
1258
1259 } /* set_serial_info */
1260
1261
1262 /* Determine type of FTDI chip based on USB config and descriptor. */
1263 static void ftdi_determine_type(struct usb_serial_port *port)
1264 {
1265 struct ftdi_private *priv = usb_get_serial_port_data(port);
1266 struct usb_serial *serial = port->serial;
1267 struct usb_device *udev = serial->dev;
1268 unsigned version;
1269 unsigned interfaces;
1270
1271 /* Assume it is not the original SIO device for now. */
1272 priv->baud_base = 48000000 / 2;
1273 priv->write_offset = 0;
1274
1275 version = le16_to_cpu(udev->descriptor.bcdDevice);
1276 interfaces = udev->actconfig->desc.bNumInterfaces;
1277 dbg("%s: bcdDevice = 0x%x, bNumInterfaces = %u", __func__,
1278 version, interfaces);
1279 if (interfaces > 1) {
1280 int inter;
1281
1282 /* Multiple interfaces.*/
1283 if (version == 0x0800) {
1284 priv->chip_type = FT4232H;
1285 /* Hi-speed - baud clock runs at 120MHz */
1286 priv->baud_base = 120000000 / 2;
1287 } else if (version == 0x0700) {
1288 priv->chip_type = FT2232H;
1289 /* Hi-speed - baud clock runs at 120MHz */
1290 priv->baud_base = 120000000 / 2;
1291 } else
1292 priv->chip_type = FT2232C;
1293
1294 /* Determine interface code. */
1295 inter = serial->interface->altsetting->desc.bInterfaceNumber;
1296 if (inter == 0) {
1297 priv->interface = INTERFACE_A;
1298 } else if (inter == 1) {
1299 priv->interface = INTERFACE_B;
1300 } else if (inter == 2) {
1301 priv->interface = INTERFACE_C;
1302 } else if (inter == 3) {
1303 priv->interface = INTERFACE_D;
1304 }
1305 /* BM-type devices have a bug where bcdDevice gets set
1306 * to 0x200 when iSerialNumber is 0. */
1307 if (version < 0x500) {
1308 dbg("%s: something fishy - bcdDevice too low for multi-interface device",
1309 __func__);
1310 }
1311 } else if (version < 0x200) {
1312 /* Old device. Assume its the original SIO. */
1313 priv->chip_type = SIO;
1314 priv->baud_base = 12000000 / 16;
1315 priv->write_offset = 1;
1316 } else if (version < 0x400) {
1317 /* Assume its an FT8U232AM (or FT8U245AM) */
1318 /* (It might be a BM because of the iSerialNumber bug,
1319 * but it will still work as an AM device.) */
1320 priv->chip_type = FT8U232AM;
1321 } else if (version < 0x600) {
1322 /* Assume its an FT232BM (or FT245BM) */
1323 priv->chip_type = FT232BM;
1324 } else {
1325 /* Assume its an FT232R */
1326 priv->chip_type = FT232RL;
1327 }
1328 dev_info(&udev->dev, "Detected %s\n", ftdi_chip_name[priv->chip_type]);
1329 }
1330
1331
1332 /* Determine the maximum packet size for the device. This depends on the chip
1333 * type and the USB host capabilities. The value should be obtained from the
1334 * device descriptor as the chip will use the appropriate values for the host.*/
1335 static void ftdi_set_max_packet_size(struct usb_serial_port *port)
1336 {
1337 struct ftdi_private *priv = usb_get_serial_port_data(port);
1338 struct usb_serial *serial = port->serial;
1339 struct usb_device *udev = serial->dev;
1340
1341 struct usb_interface *interface = serial->interface;
1342 struct usb_endpoint_descriptor *ep_desc = &interface->cur_altsetting->endpoint[1].desc;
1343
1344 unsigned num_endpoints;
1345 int i = 0;
1346
1347 num_endpoints = interface->cur_altsetting->desc.bNumEndpoints;
1348 dev_info(&udev->dev, "Number of endpoints %d\n", num_endpoints);
1349
1350 /* NOTE: some customers have programmed FT232R/FT245R devices
1351 * with an endpoint size of 0 - not good. In this case, we
1352 * want to override the endpoint descriptor setting and use a
1353 * value of 64 for wMaxPacketSize */
1354 for (i = 0; i < num_endpoints; i++) {
1355 dev_info(&udev->dev, "Endpoint %d MaxPacketSize %d\n", i+1,
1356 interface->cur_altsetting->endpoint[i].desc.wMaxPacketSize);
1357 ep_desc = &interface->cur_altsetting->endpoint[i].desc;
1358 if (ep_desc->wMaxPacketSize == 0) {
1359 ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
1360 dev_info(&udev->dev, "Overriding wMaxPacketSize on endpoint %d\n", i);
1361 }
1362 }
1363
1364 /* set max packet size based on descriptor */
1365 priv->max_packet_size = ep_desc->wMaxPacketSize;
1366
1367 dev_info(&udev->dev, "Setting MaxPacketSize %d\n", priv->max_packet_size);
1368 }
1369
1370
1371 /*
1372 * ***************************************************************************
1373 * Sysfs Attribute
1374 * ***************************************************************************
1375 */
1376
1377 static ssize_t show_latency_timer(struct device *dev,
1378 struct device_attribute *attr, char *buf)
1379 {
1380 struct usb_serial_port *port = to_usb_serial_port(dev);
1381 struct ftdi_private *priv = usb_get_serial_port_data(port);
1382 if (priv->flags & ASYNC_LOW_LATENCY)
1383 return sprintf(buf, "1\n");
1384 else
1385 return sprintf(buf, "%i\n", priv->latency);
1386 }
1387
1388
1389 /* Write a new value of the latency timer, in units of milliseconds. */
1390 static ssize_t store_latency_timer(struct device *dev,
1391 struct device_attribute *attr, const char *valbuf,
1392 size_t count)
1393 {
1394 struct usb_serial_port *port = to_usb_serial_port(dev);
1395 struct ftdi_private *priv = usb_get_serial_port_data(port);
1396 int v = simple_strtoul(valbuf, NULL, 10);
1397 int rv = 0;
1398
1399 priv->latency = v;
1400 rv = write_latency_timer(port);
1401 if (rv < 0)
1402 return -EIO;
1403 return count;
1404 }
1405
1406 /* Write an event character directly to the FTDI register. The ASCII
1407 value is in the low 8 bits, with the enable bit in the 9th bit. */
1408 static ssize_t store_event_char(struct device *dev,
1409 struct device_attribute *attr, const char *valbuf, size_t count)
1410 {
1411 struct usb_serial_port *port = to_usb_serial_port(dev);
1412 struct ftdi_private *priv = usb_get_serial_port_data(port);
1413 struct usb_device *udev = port->serial->dev;
1414 char buf[1];
1415 int v = simple_strtoul(valbuf, NULL, 10);
1416 int rv = 0;
1417
1418 dbg("%s: setting event char = %i", __func__, v);
1419
1420 rv = usb_control_msg(udev,
1421 usb_sndctrlpipe(udev, 0),
1422 FTDI_SIO_SET_EVENT_CHAR_REQUEST,
1423 FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE,
1424 v, priv->interface,
1425 buf, 0, WDR_TIMEOUT);
1426
1427 if (rv < 0) {
1428 dbg("Unable to write event character: %i", rv);
1429 return -EIO;
1430 }
1431
1432 return count;
1433 }
1434
1435 static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer,
1436 store_latency_timer);
1437 static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char);
1438
1439 static int create_sysfs_attrs(struct usb_serial_port *port)
1440 {
1441 struct ftdi_private *priv = usb_get_serial_port_data(port);
1442 int retval = 0;
1443
1444 dbg("%s", __func__);
1445
1446 /* XXX I've no idea if the original SIO supports the event_char
1447 * sysfs parameter, so I'm playing it safe. */
1448 if (priv->chip_type != SIO) {
1449 dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]);
1450 retval = device_create_file(&port->dev, &dev_attr_event_char);
1451 if ((!retval) &&
1452 (priv->chip_type == FT232BM ||
1453 priv->chip_type == FT2232C ||
1454 priv->chip_type == FT232RL ||
1455 priv->chip_type == FT2232H ||
1456 priv->chip_type == FT4232H)) {
1457 retval = device_create_file(&port->dev,
1458 &dev_attr_latency_timer);
1459 }
1460 }
1461 return retval;
1462 }
1463
1464 static void remove_sysfs_attrs(struct usb_serial_port *port)
1465 {
1466 struct ftdi_private *priv = usb_get_serial_port_data(port);
1467
1468 dbg("%s", __func__);
1469
1470 /* XXX see create_sysfs_attrs */
1471 if (priv->chip_type != SIO) {
1472 device_remove_file(&port->dev, &dev_attr_event_char);
1473 if (priv->chip_type == FT232BM ||
1474 priv->chip_type == FT2232C ||
1475 priv->chip_type == FT232RL ||
1476 priv->chip_type == FT2232H ||
1477 priv->chip_type == FT4232H) {
1478 device_remove_file(&port->dev, &dev_attr_latency_timer);
1479 }
1480 }
1481
1482 }
1483
1484 /*
1485 * ***************************************************************************
1486 * FTDI driver specific functions
1487 * ***************************************************************************
1488 */
1489
1490 /* Probe function to check for special devices */
1491 static int ftdi_sio_probe(struct usb_serial *serial,
1492 const struct usb_device_id *id)
1493 {
1494 struct ftdi_sio_quirk *quirk =
1495 (struct ftdi_sio_quirk *)id->driver_info;
1496
1497 if (quirk && quirk->probe) {
1498 int ret = quirk->probe(serial);
1499 if (ret != 0)
1500 return ret;
1501 }
1502
1503 usb_set_serial_data(serial, (void *)id->driver_info);
1504
1505 return 0;
1506 }
1507
1508 static int ftdi_sio_port_probe(struct usb_serial_port *port)
1509 {
1510 struct ftdi_private *priv;
1511 struct ftdi_sio_quirk *quirk = usb_get_serial_data(port->serial);
1512
1513
1514 dbg("%s", __func__);
1515
1516 priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL);
1517 if (!priv) {
1518 dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", __func__,
1519 sizeof(struct ftdi_private));
1520 return -ENOMEM;
1521 }
1522
1523 kref_init(&priv->kref);
1524 spin_lock_init(&priv->rx_lock);
1525 spin_lock_init(&priv->tx_lock);
1526 init_waitqueue_head(&priv->delta_msr_wait);
1527 /* This will push the characters through immediately rather
1528 than queue a task to deliver them */
1529 priv->flags = ASYNC_LOW_LATENCY;
1530
1531 if (quirk && quirk->port_probe)
1532 quirk->port_probe(priv);
1533
1534 /* Increase the size of read buffers */
1535 kfree(port->bulk_in_buffer);
1536 port->bulk_in_buffer = kmalloc(BUFSZ, GFP_KERNEL);
1537 if (!port->bulk_in_buffer) {
1538 kfree(priv);
1539 return -ENOMEM;
1540 }
1541 if (port->read_urb) {
1542 port->read_urb->transfer_buffer = port->bulk_in_buffer;
1543 port->read_urb->transfer_buffer_length = BUFSZ;
1544 }
1545
1546 INIT_DELAYED_WORK(&priv->rx_work, ftdi_process_read);
1547 priv->port = port;
1548
1549 /* Free port's existing write urb and transfer buffer. */
1550 if (port->write_urb) {
1551 usb_free_urb(port->write_urb);
1552 port->write_urb = NULL;
1553 }
1554 kfree(port->bulk_out_buffer);
1555 port->bulk_out_buffer = NULL;
1556
1557 usb_set_serial_port_data(port, priv);
1558
1559 ftdi_determine_type(port);
1560 ftdi_set_max_packet_size(port);
1561 read_latency_timer(port);
1562 create_sysfs_attrs(port);
1563 return 0;
1564 }
1565
1566 /* Setup for the USB-UIRT device, which requires hardwired
1567 * baudrate (38400 gets mapped to 312500) */
1568 /* Called from usbserial:serial_probe */
1569 static void ftdi_USB_UIRT_setup(struct ftdi_private *priv)
1570 {
1571 dbg("%s", __func__);
1572
1573 priv->flags |= ASYNC_SPD_CUST;
1574 priv->custom_divisor = 77;
1575 priv->force_baud = 38400;
1576 } /* ftdi_USB_UIRT_setup */
1577
1578 /* Setup for the HE-TIRA1 device, which requires hardwired
1579 * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */
1580
1581 static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv)
1582 {
1583 dbg("%s", __func__);
1584
1585 priv->flags |= ASYNC_SPD_CUST;
1586 priv->custom_divisor = 240;
1587 priv->force_baud = 38400;
1588 priv->force_rtscts = 1;
1589 } /* ftdi_HE_TIRA1_setup */
1590
1591 /*
1592 * Module parameter to control latency timer for NDI FTDI-based USB devices.
1593 * If this value is not set in modprobe.conf.local its value will be set to 1ms.
1594 */
1595 static int ndi_latency_timer = 1;
1596
1597 /* Setup for the NDI FTDI-based USB devices, which requires hardwired
1598 * baudrate (19200 gets mapped to 1200000).
1599 *
1600 * Called from usbserial:serial_probe.
1601 */
1602 static int ftdi_NDI_device_setup(struct usb_serial *serial)
1603 {
1604 struct usb_device *udev = serial->dev;
1605 int latency = ndi_latency_timer;
1606 int rv = 0;
1607 char buf[1];
1608
1609 if (latency == 0)
1610 latency = 1;
1611 if (latency > 99)
1612 latency = 99;
1613
1614 dbg("%s setting NDI device latency to %d", __func__, latency);
1615 dev_info(&udev->dev, "NDI device with a latency value of %d", latency);
1616
1617 rv = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
1618 FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
1619 FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
1620 latency, 0, buf, 0, WDR_TIMEOUT);
1621 return 0;
1622 }
1623
1624 /*
1625 * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko
1626 * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from
1627 * userspace using openocd.
1628 */
1629 static int ftdi_jtag_probe(struct usb_serial *serial)
1630 {
1631 struct usb_device *udev = serial->dev;
1632 struct usb_interface *interface = serial->interface;
1633
1634 dbg("%s", __func__);
1635
1636 if (interface == udev->actconfig->interface[0]) {
1637 dev_info(&udev->dev,
1638 "Ignoring serial port reserved for JTAG\n");
1639 return -ENODEV;
1640 }
1641
1642 return 0;
1643 }
1644
1645 /*
1646 * The Matrix Orbital VK204-25-USB has an invalid IN endpoint.
1647 * We have to correct it if we want to read from it.
1648 */
1649 static int ftdi_mtxorb_hack_setup(struct usb_serial *serial)
1650 {
1651 struct usb_host_endpoint *ep = serial->dev->ep_in[1];
1652 struct usb_endpoint_descriptor *ep_desc = &ep->desc;
1653
1654 if (ep->enabled && ep_desc->wMaxPacketSize == 0) {
1655 ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
1656 dev_info(&serial->dev->dev,
1657 "Fixing invalid wMaxPacketSize on read pipe\n");
1658 }
1659
1660 return 0;
1661 }
1662
1663 static void ftdi_sio_priv_release(struct kref *k)
1664 {
1665 struct ftdi_private *priv = container_of(k, struct ftdi_private, kref);
1666
1667 kfree(priv);
1668 }
1669
1670 static int ftdi_sio_port_remove(struct usb_serial_port *port)
1671 {
1672 struct ftdi_private *priv = usb_get_serial_port_data(port);
1673
1674 dbg("%s", __func__);
1675
1676 remove_sysfs_attrs(port);
1677
1678 kref_put(&priv->kref, ftdi_sio_priv_release);
1679
1680 return 0;
1681 }
1682
1683 static int ftdi_open(struct tty_struct *tty,
1684 struct usb_serial_port *port, struct file *filp)
1685 { /* ftdi_open */
1686 struct usb_device *dev = port->serial->dev;
1687 struct ftdi_private *priv = usb_get_serial_port_data(port);
1688 unsigned long flags;
1689
1690 int result = 0;
1691 char buf[1]; /* Needed for the usb_control_msg I think */
1692
1693 dbg("%s", __func__);
1694
1695 spin_lock_irqsave(&priv->tx_lock, flags);
1696 priv->tx_bytes = 0;
1697 spin_unlock_irqrestore(&priv->tx_lock, flags);
1698 spin_lock_irqsave(&priv->rx_lock, flags);
1699 priv->rx_bytes = 0;
1700 spin_unlock_irqrestore(&priv->rx_lock, flags);
1701
1702 if (tty)
1703 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1704
1705 write_latency_timer(port);
1706
1707 /* No error checking for this (will get errors later anyway) */
1708 /* See ftdi_sio.h for description of what is reset */
1709 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1710 FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
1711 FTDI_SIO_RESET_SIO,
1712 priv->interface, buf, 0, WDR_TIMEOUT);
1713
1714 /* Termios defaults are set by usb_serial_init. We don't change
1715 port->tty->termios - this would lose speed settings, etc.
1716 This is same behaviour as serial.c/rs_open() - Kuba */
1717
1718 /* ftdi_set_termios will send usb control messages */
1719 if (tty)
1720 ftdi_set_termios(tty, port, tty->termios);
1721
1722 /* Not throttled */
1723 spin_lock_irqsave(&priv->rx_lock, flags);
1724 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
1725 spin_unlock_irqrestore(&priv->rx_lock, flags);
1726
1727 /* Start reading from the device */
1728 priv->rx_processed = 0;
1729 usb_fill_bulk_urb(port->read_urb, dev,
1730 usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress),
1731 port->read_urb->transfer_buffer,
1732 port->read_urb->transfer_buffer_length,
1733 ftdi_read_bulk_callback, port);
1734 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
1735 if (result)
1736 dev_err(&port->dev,
1737 "%s - failed submitting read urb, error %d\n",
1738 __func__, result);
1739 else
1740 kref_get(&priv->kref);
1741
1742 return result;
1743 } /* ftdi_open */
1744
1745
1746 static void ftdi_dtr_rts(struct usb_serial_port *port, int on)
1747 {
1748 struct ftdi_private *priv = usb_get_serial_port_data(port);
1749 char buf[1];
1750
1751 mutex_lock(&port->serial->disc_mutex);
1752 if (!port->serial->disconnected) {
1753 /* Disable flow control */
1754 if (!on && usb_control_msg(port->serial->dev,
1755 usb_sndctrlpipe(port->serial->dev, 0),
1756 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
1757 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
1758 0, priv->interface, buf, 0,
1759 WDR_TIMEOUT) < 0) {
1760 dev_err(&port->dev, "error from flowcontrol urb\n");
1761 }
1762 /* drop RTS and DTR */
1763 if (on)
1764 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1765 else
1766 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1767 }
1768 mutex_unlock(&port->serial->disc_mutex);
1769 }
1770
1771 /*
1772 * usbserial:__serial_close only calls ftdi_close if the point is open
1773 *
1774 * This only gets called when it is the last close
1775 *
1776 *
1777 */
1778
1779 static void ftdi_close(struct usb_serial_port *port)
1780 { /* ftdi_close */
1781 struct ftdi_private *priv = usb_get_serial_port_data(port);
1782
1783 dbg("%s", __func__);
1784
1785
1786 /* cancel any scheduled reading */
1787 cancel_delayed_work_sync(&priv->rx_work);
1788
1789 /* shutdown our bulk read */
1790 usb_kill_urb(port->read_urb);
1791 kref_put(&priv->kref, ftdi_sio_priv_release);
1792 } /* ftdi_close */
1793
1794
1795
1796 /* The SIO requires the first byte to have:
1797 * B0 1
1798 * B1 0
1799 * B2..7 length of message excluding byte 0
1800 *
1801 * The new devices do not require this byte
1802 */
1803 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
1804 const unsigned char *buf, int count)
1805 { /* ftdi_write */
1806 struct ftdi_private *priv = usb_get_serial_port_data(port);
1807 struct urb *urb;
1808 unsigned char *buffer;
1809 int data_offset ; /* will be 1 for the SIO and 0 otherwise */
1810 int status;
1811 int transfer_size;
1812 unsigned long flags;
1813
1814 dbg("%s port %d, %d bytes", __func__, port->number, count);
1815
1816 if (count == 0) {
1817 dbg("write request of 0 bytes");
1818 return 0;
1819 }
1820 spin_lock_irqsave(&priv->tx_lock, flags);
1821 if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) {
1822 spin_unlock_irqrestore(&priv->tx_lock, flags);
1823 dbg("%s - write limit hit\n", __func__);
1824 return 0;
1825 }
1826 priv->tx_outstanding_urbs++;
1827 spin_unlock_irqrestore(&priv->tx_lock, flags);
1828
1829 data_offset = priv->write_offset;
1830 dbg("data_offset set to %d", data_offset);
1831
1832 /* Determine total transfer size */
1833 transfer_size = count;
1834 if (data_offset > 0) {
1835 /* Original sio needs control bytes too... */
1836 transfer_size += (data_offset *
1837 ((count + (priv->max_packet_size - 1 - data_offset)) /
1838 (priv->max_packet_size - data_offset)));
1839 }
1840
1841 buffer = kmalloc(transfer_size, GFP_ATOMIC);
1842 if (!buffer) {
1843 dev_err(&port->dev,
1844 "%s ran out of kernel memory for urb ...\n", __func__);
1845 count = -ENOMEM;
1846 goto error_no_buffer;
1847 }
1848
1849 urb = usb_alloc_urb(0, GFP_ATOMIC);
1850 if (!urb) {
1851 dev_err(&port->dev, "%s - no more free urbs\n", __func__);
1852 count = -ENOMEM;
1853 goto error_no_urb;
1854 }
1855
1856 /* Copy data */
1857 if (data_offset > 0) {
1858 /* Original sio requires control byte at start of
1859 each packet. */
1860 int user_pktsz = priv->max_packet_size - data_offset;
1861 int todo = count;
1862 unsigned char *first_byte = buffer;
1863 const unsigned char *current_position = buf;
1864
1865 while (todo > 0) {
1866 if (user_pktsz > todo)
1867 user_pktsz = todo;
1868 /* Write the control byte at the front of the packet*/
1869 *first_byte = 1 | ((user_pktsz) << 2);
1870 /* Copy data for packet */
1871 memcpy(first_byte + data_offset,
1872 current_position, user_pktsz);
1873 first_byte += user_pktsz + data_offset;
1874 current_position += user_pktsz;
1875 todo -= user_pktsz;
1876 }
1877 } else {
1878 /* No control byte required. */
1879 /* Copy in the data to send */
1880 memcpy(buffer, buf, count);
1881 }
1882
1883 usb_serial_debug_data(debug, &port->dev, __func__,
1884 transfer_size, buffer);
1885
1886 /* fill the buffer and send it */
1887 usb_fill_bulk_urb(urb, port->serial->dev,
1888 usb_sndbulkpipe(port->serial->dev,
1889 port->bulk_out_endpointAddress),
1890 buffer, transfer_size,
1891 ftdi_write_bulk_callback, port);
1892
1893 status = usb_submit_urb(urb, GFP_ATOMIC);
1894 if (status) {
1895 dev_err(&port->dev,
1896 "%s - failed submitting write urb, error %d\n",
1897 __func__, status);
1898 count = status;
1899 goto error;
1900 } else {
1901 spin_lock_irqsave(&priv->tx_lock, flags);
1902 priv->tx_outstanding_bytes += count;
1903 priv->tx_bytes += count;
1904 spin_unlock_irqrestore(&priv->tx_lock, flags);
1905 }
1906
1907 /* we are done with this urb, so let the host driver
1908 * really free it when it is finished with it */
1909 usb_free_urb(urb);
1910
1911 dbg("%s write returning: %d", __func__, count);
1912 return count;
1913 error:
1914 usb_free_urb(urb);
1915 error_no_urb:
1916 kfree(buffer);
1917 error_no_buffer:
1918 spin_lock_irqsave(&priv->tx_lock, flags);
1919 priv->tx_outstanding_urbs--;
1920 spin_unlock_irqrestore(&priv->tx_lock, flags);
1921 return count;
1922 } /* ftdi_write */
1923
1924
1925 /* This function may get called when the device is closed */
1926
1927 static void ftdi_write_bulk_callback(struct urb *urb)
1928 {
1929 unsigned long flags;
1930 struct usb_serial_port *port = urb->context;
1931 struct ftdi_private *priv;
1932 int data_offset; /* will be 1 for the SIO and 0 otherwise */
1933 unsigned long countback;
1934 int status = urb->status;
1935
1936 /* free up the transfer buffer, as usb_free_urb() does not do this */
1937 kfree(urb->transfer_buffer);
1938
1939 dbg("%s - port %d", __func__, port->number);
1940
1941 priv = usb_get_serial_port_data(port);
1942 if (!priv) {
1943 dbg("%s - bad port private data pointer - exiting", __func__);
1944 return;
1945 }
1946 /* account for transferred data */
1947 countback = urb->actual_length;
1948 data_offset = priv->write_offset;
1949 if (data_offset > 0) {
1950 /* Subtract the control bytes */
1951 countback -= (data_offset * DIV_ROUND_UP(countback, priv->max_packet_size));
1952 }
1953 spin_lock_irqsave(&priv->tx_lock, flags);
1954 --priv->tx_outstanding_urbs;
1955 priv->tx_outstanding_bytes -= countback;
1956 spin_unlock_irqrestore(&priv->tx_lock, flags);
1957
1958 if (status) {
1959 dbg("nonzero write bulk status received: %d", status);
1960 return;
1961 }
1962
1963 usb_serial_port_softint(port);
1964 } /* ftdi_write_bulk_callback */
1965
1966
1967 static int ftdi_write_room(struct tty_struct *tty)
1968 {
1969 struct usb_serial_port *port = tty->driver_data;
1970 struct ftdi_private *priv = usb_get_serial_port_data(port);
1971 int room;
1972 unsigned long flags;
1973
1974 dbg("%s - port %d", __func__, port->number);
1975
1976 spin_lock_irqsave(&priv->tx_lock, flags);
1977 if (priv->tx_outstanding_urbs < URB_UPPER_LIMIT) {
1978 /*
1979 * We really can take anything the user throws at us
1980 * but let's pick a nice big number to tell the tty
1981 * layer that we have lots of free space
1982 */
1983 room = 2048;
1984 } else {
1985 room = 0;
1986 }
1987 spin_unlock_irqrestore(&priv->tx_lock, flags);
1988 return room;
1989 }
1990
1991 static int ftdi_chars_in_buffer(struct tty_struct *tty)
1992 {
1993 struct usb_serial_port *port = tty->driver_data;
1994 struct ftdi_private *priv = usb_get_serial_port_data(port);
1995 int buffered;
1996 unsigned long flags;
1997
1998 dbg("%s - port %d", __func__, port->number);
1999
2000 spin_lock_irqsave(&priv->tx_lock, flags);
2001 buffered = (int)priv->tx_outstanding_bytes;
2002 spin_unlock_irqrestore(&priv->tx_lock, flags);
2003 if (buffered < 0) {
2004 dev_err(&port->dev, "%s outstanding tx bytes is negative!\n",
2005 __func__);
2006 buffered = 0;
2007 }
2008 return buffered;
2009 }
2010
2011 static void ftdi_read_bulk_callback(struct urb *urb)
2012 {
2013 struct usb_serial_port *port = urb->context;
2014 struct tty_struct *tty;
2015 struct ftdi_private *priv;
2016 unsigned long countread;
2017 unsigned long flags;
2018 int status = urb->status;
2019
2020 if (urb->number_of_packets > 0) {
2021 dev_err(&port->dev, "%s transfer_buffer_length %d "
2022 "actual_length %d number of packets %d\n", __func__,
2023 urb->transfer_buffer_length,
2024 urb->actual_length, urb->number_of_packets);
2025 dev_err(&port->dev, "%s transfer_flags %x\n", __func__,
2026 urb->transfer_flags);
2027 }
2028
2029 dbg("%s - port %d", __func__, port->number);
2030
2031 if (port->port.count <= 0)
2032 return;
2033
2034 tty = tty_port_tty_get(&port->port);
2035 if (!tty) {
2036 dbg("%s - bad tty pointer - exiting", __func__);
2037 return;
2038 }
2039
2040 priv = usb_get_serial_port_data(port);
2041 if (!priv) {
2042 dbg("%s - bad port private data pointer - exiting", __func__);
2043 goto out;
2044 }
2045
2046 if (urb != port->read_urb)
2047 dev_err(&port->dev, "%s - Not my urb!\n", __func__);
2048
2049 if (status) {
2050 /* This will happen at close every time so it is a dbg not an
2051 err */
2052 dbg("(this is ok on close) nonzero read bulk status received: %d", status);
2053 goto out;
2054 }
2055
2056 /* count data bytes, but not status bytes */
2057 countread = urb->actual_length;
2058 countread -= 2 * DIV_ROUND_UP(countread, priv->max_packet_size);
2059 spin_lock_irqsave(&priv->rx_lock, flags);
2060 priv->rx_bytes += countread;
2061 spin_unlock_irqrestore(&priv->rx_lock, flags);
2062
2063 ftdi_process_read(&priv->rx_work.work);
2064 out:
2065 tty_kref_put(tty);
2066 } /* ftdi_read_bulk_callback */
2067
2068
2069 static void ftdi_process_read(struct work_struct *work)
2070 { /* ftdi_process_read */
2071 struct ftdi_private *priv =
2072 container_of(work, struct ftdi_private, rx_work.work);
2073 struct usb_serial_port *port = priv->port;
2074 struct urb *urb;
2075 struct tty_struct *tty;
2076 char error_flag;
2077 unsigned char *data;
2078
2079 int i;
2080 int result;
2081 int need_flip;
2082 int packet_offset;
2083 unsigned long flags;
2084
2085 dbg("%s - port %d", __func__, port->number);
2086
2087 if (port->port.count <= 0)
2088 return;
2089
2090 tty = tty_port_tty_get(&port->port);
2091 if (!tty) {
2092 dbg("%s - bad tty pointer - exiting", __func__);
2093 return;
2094 }
2095
2096 priv = usb_get_serial_port_data(port);
2097 if (!priv) {
2098 dbg("%s - bad port private data pointer - exiting", __func__);
2099 goto out;
2100 }
2101
2102 urb = port->read_urb;
2103 if (!urb) {
2104 dbg("%s - bad read_urb pointer - exiting", __func__);
2105 goto out;
2106 }
2107
2108 data = urb->transfer_buffer;
2109
2110 if (priv->rx_processed) {
2111 dbg("%s - already processed: %d bytes, %d remain", __func__,
2112 priv->rx_processed,
2113 urb->actual_length - priv->rx_processed);
2114 } else {
2115 /* The first two bytes of every read packet are status */
2116 if (urb->actual_length > 2)
2117 usb_serial_debug_data(debug, &port->dev, __func__,
2118 urb->actual_length, data);
2119 else
2120 dbg("Status only: %03oo %03oo", data[0], data[1]);
2121 }
2122
2123
2124 /* TO DO -- check for hung up line and handle appropriately: */
2125 /* send hangup */
2126 /* See acm.c - you do a tty_hangup - eg tty_hangup(tty) */
2127 /* if CD is dropped and the line is not CLOCAL then we should hangup */
2128
2129 need_flip = 0;
2130 for (packet_offset = priv->rx_processed;
2131 packet_offset < urb->actual_length; packet_offset += priv->max_packet_size) {
2132 int length;
2133
2134 /* Compare new line status to the old one, signal if different/
2135 N.B. packet may be processed more than once, but differences
2136 are only processed once. */
2137 char new_status = data[packet_offset + 0] &
2138 FTDI_STATUS_B0_MASK;
2139 if (new_status != priv->prev_status) {
2140 priv->diff_status |=
2141 new_status ^ priv->prev_status;
2142 wake_up_interruptible(&priv->delta_msr_wait);
2143 priv->prev_status = new_status;
2144 }
2145
2146 length = min_t(u32, priv->max_packet_size, urb->actual_length-packet_offset)-2;
2147 if (length < 0) {
2148 dev_err(&port->dev, "%s - bad packet length: %d\n",
2149 __func__, length+2);
2150 length = 0;
2151 }
2152
2153 if (priv->rx_flags & THROTTLED) {
2154 dbg("%s - throttled", __func__);
2155 break;
2156 }
2157 if (tty_buffer_request_room(tty, length) < length) {
2158 /* break out & wait for throttling/unthrottling to
2159 happen */
2160 dbg("%s - receive room low", __func__);
2161 break;
2162 }
2163
2164 /* Handle errors and break */
2165 error_flag = TTY_NORMAL;
2166 /* Although the device uses a bitmask and hence can have
2167 multiple errors on a packet - the order here sets the
2168 priority the error is returned to the tty layer */
2169
2170 if (data[packet_offset+1] & FTDI_RS_OE) {
2171 error_flag = TTY_OVERRUN;
2172 dbg("OVERRRUN error");
2173 }
2174 if (data[packet_offset+1] & FTDI_RS_BI) {
2175 error_flag = TTY_BREAK;
2176 dbg("BREAK received");
2177 usb_serial_handle_break(port);
2178 }
2179 if (data[packet_offset+1] & FTDI_RS_PE) {
2180 error_flag = TTY_PARITY;
2181 dbg("PARITY error");
2182 }
2183 if (data[packet_offset+1] & FTDI_RS_FE) {
2184 error_flag = TTY_FRAME;
2185 dbg("FRAMING error");
2186 }
2187 if (length > 0) {
2188 for (i = 2; i < length+2; i++) {
2189 /* Note that the error flag is duplicated for
2190 every character received since we don't know
2191 which character it applied to */
2192 if (!usb_serial_handle_sysrq_char(tty, port,
2193 data[packet_offset + i]))
2194 tty_insert_flip_char(tty,
2195 data[packet_offset + i],
2196 error_flag);
2197 }
2198 need_flip = 1;
2199 }
2200
2201 #ifdef NOT_CORRECT_BUT_KEEPING_IT_FOR_NOW
2202 /* if a parity error is detected you get status packets forever
2203 until a character is sent without a parity error.
2204 This doesn't work well since the application receives a
2205 never ending stream of bad data - even though new data
2206 hasn't been sent. Therefore I (bill) have taken this out.
2207 However - this might make sense for framing errors and so on
2208 so I am leaving the code in for now.
2209 */
2210 else {
2211 if (error_flag != TTY_NORMAL) {
2212 dbg("error_flag is not normal");
2213 /* In this case it is just status - if that is
2214 an error send a bad character */
2215 if (tty->flip.count >= TTY_FLIPBUF_SIZE)
2216 tty_flip_buffer_push(tty);
2217 tty_insert_flip_char(tty, 0xff, error_flag);
2218 need_flip = 1;
2219 }
2220 }
2221 #endif
2222 } /* "for(packet_offset=0..." */
2223
2224 /* Low latency */
2225 if (need_flip)
2226 tty_flip_buffer_push(tty);
2227
2228 if (packet_offset < urb->actual_length) {
2229 /* not completely processed - record progress */
2230 priv->rx_processed = packet_offset;
2231 dbg("%s - incomplete, %d bytes processed, %d remain",
2232 __func__, packet_offset,
2233 urb->actual_length - packet_offset);
2234 /* check if we were throttled while processing */
2235 spin_lock_irqsave(&priv->rx_lock, flags);
2236 if (priv->rx_flags & THROTTLED) {
2237 priv->rx_flags |= ACTUALLY_THROTTLED;
2238 spin_unlock_irqrestore(&priv->rx_lock, flags);
2239 dbg("%s - deferring remainder until unthrottled",
2240 __func__);
2241 goto out;
2242 }
2243 spin_unlock_irqrestore(&priv->rx_lock, flags);
2244 /* if the port is closed stop trying to read */
2245 if (port->port.count > 0)
2246 /* delay processing of remainder */
2247 schedule_delayed_work(&priv->rx_work, 1);
2248 else
2249 dbg("%s - port is closed", __func__);
2250 goto out;
2251 }
2252
2253 /* urb is completely processed */
2254 priv->rx_processed = 0;
2255
2256 /* if the port is closed stop trying to read */
2257 if (port->port.count > 0) {
2258 /* Continue trying to always read */
2259 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
2260 usb_rcvbulkpipe(port->serial->dev,
2261 port->bulk_in_endpointAddress),
2262 port->read_urb->transfer_buffer,
2263 port->read_urb->transfer_buffer_length,
2264 ftdi_read_bulk_callback, port);
2265
2266 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
2267 if (result)
2268 dev_err(&port->dev,
2269 "%s - failed resubmitting read urb, error %d\n",
2270 __func__, result);
2271 }
2272 out:
2273 tty_kref_put(tty);
2274 } /* ftdi_process_read */
2275
2276
2277 static void ftdi_break_ctl(struct tty_struct *tty, int break_state)
2278 {
2279 struct usb_serial_port *port = tty->driver_data;
2280 struct ftdi_private *priv = usb_get_serial_port_data(port);
2281 __u16 urb_value = 0;
2282 char buf[1];
2283
2284 /* break_state = -1 to turn on break, and 0 to turn off break */
2285 /* see drivers/char/tty_io.c to see it used */
2286 /* last_set_data_urb_value NEVER has the break bit set in it */
2287
2288 if (break_state)
2289 urb_value = priv->last_set_data_urb_value | FTDI_SIO_SET_BREAK;
2290 else
2291 urb_value = priv->last_set_data_urb_value;
2292
2293 if (usb_control_msg(port->serial->dev,
2294 usb_sndctrlpipe(port->serial->dev, 0),
2295 FTDI_SIO_SET_DATA_REQUEST,
2296 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2297 urb_value , priv->interface,
2298 buf, 0, WDR_TIMEOUT) < 0) {
2299 dev_err(&port->dev, "%s FAILED to enable/disable break state "
2300 "(state was %d)\n", __func__, break_state);
2301 }
2302
2303 dbg("%s break state is %d - urb is %d", __func__,
2304 break_state, urb_value);
2305
2306 }
2307
2308
2309 /* old_termios contains the original termios settings and tty->termios contains
2310 * the new setting to be used
2311 * WARNING: set_termios calls this with old_termios in kernel space
2312 */
2313
2314 static void ftdi_set_termios(struct tty_struct *tty,
2315 struct usb_serial_port *port, struct ktermios *old_termios)
2316 { /* ftdi_termios */
2317 struct usb_device *dev = port->serial->dev;
2318 struct ftdi_private *priv = usb_get_serial_port_data(port);
2319 struct ktermios *termios = tty->termios;
2320 unsigned int cflag = termios->c_cflag;
2321 __u16 urb_value; /* will hold the new flags */
2322 char buf[1]; /* Perhaps I should dynamically alloc this? */
2323
2324 /* Added for xon/xoff support */
2325 unsigned int iflag = termios->c_iflag;
2326 unsigned char vstop;
2327 unsigned char vstart;
2328
2329 dbg("%s", __func__);
2330
2331 /* Force baud rate if this device requires it, unless it is set to
2332 B0. */
2333 if (priv->force_baud && ((termios->c_cflag & CBAUD) != B0)) {
2334 dbg("%s: forcing baud rate for this device", __func__);
2335 tty_encode_baud_rate(tty, priv->force_baud,
2336 priv->force_baud);
2337 }
2338
2339 /* Force RTS-CTS if this device requires it. */
2340 if (priv->force_rtscts) {
2341 dbg("%s: forcing rtscts for this device", __func__);
2342 termios->c_cflag |= CRTSCTS;
2343 }
2344
2345 cflag = termios->c_cflag;
2346
2347 /* FIXME -For this cut I don't care if the line is really changing or
2348 not - so just do the change regardless - should be able to
2349 compare old_termios and tty->termios */
2350 /* NOTE These routines can get interrupted by
2351 ftdi_sio_read_bulk_callback - need to examine what this means -
2352 don't see any problems yet */
2353
2354 /* Set number of data bits, parity, stop bits */
2355
2356 termios->c_cflag &= ~CMSPAR;
2357
2358 urb_value = 0;
2359 urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 :
2360 FTDI_SIO_SET_DATA_STOP_BITS_1);
2361 urb_value |= (cflag & PARENB ?
2362 (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD :
2363 FTDI_SIO_SET_DATA_PARITY_EVEN) :
2364 FTDI_SIO_SET_DATA_PARITY_NONE);
2365 if (cflag & CSIZE) {
2366 switch (cflag & CSIZE) {
2367 case CS5: urb_value |= 5; dbg("Setting CS5"); break;
2368 case CS6: urb_value |= 6; dbg("Setting CS6"); break;
2369 case CS7: urb_value |= 7; dbg("Setting CS7"); break;
2370 case CS8: urb_value |= 8; dbg("Setting CS8"); break;
2371 default:
2372 dev_err(&port->dev, "CSIZE was set but not CS5-CS8\n");
2373 }
2374 }
2375
2376 /* This is needed by the break command since it uses the same command
2377 - but is or'ed with this value */
2378 priv->last_set_data_urb_value = urb_value;
2379
2380 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2381 FTDI_SIO_SET_DATA_REQUEST,
2382 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2383 urb_value , priv->interface,
2384 buf, 0, WDR_SHORT_TIMEOUT) < 0) {
2385 dev_err(&port->dev, "%s FAILED to set "
2386 "databits/stopbits/parity\n", __func__);
2387 }
2388
2389 /* Now do the baudrate */
2390 if ((cflag & CBAUD) == B0) {
2391 /* Disable flow control */
2392 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2393 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2394 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2395 0, priv->interface,
2396 buf, 0, WDR_TIMEOUT) < 0) {
2397 dev_err(&port->dev,
2398 "%s error from disable flowcontrol urb\n",
2399 __func__);
2400 }
2401 /* Drop RTS and DTR */
2402 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2403 } else {
2404 /* set the baudrate determined before */
2405 if (change_speed(tty, port))
2406 dev_err(&port->dev, "%s urb failed to set baudrate\n",
2407 __func__);
2408 /* Ensure RTS and DTR are raised when baudrate changed from 0 */
2409 if (!old_termios || (old_termios->c_cflag & CBAUD) == B0)
2410 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2411 }
2412
2413 /* Set flow control */
2414 /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */
2415 if (cflag & CRTSCTS) {
2416 dbg("%s Setting to CRTSCTS flow control", __func__);
2417 if (usb_control_msg(dev,
2418 usb_sndctrlpipe(dev, 0),
2419 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2420 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2421 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface),
2422 buf, 0, WDR_TIMEOUT) < 0) {
2423 dev_err(&port->dev,
2424 "urb failed to set to rts/cts flow control\n");
2425 }
2426
2427 } else {
2428 /*
2429 * Xon/Xoff code
2430 *
2431 * Check the IXOFF status in the iflag component of the
2432 * termios structure. If IXOFF is not set, the pre-xon/xoff
2433 * code is executed.
2434 */
2435 if (iflag & IXOFF) {
2436 dbg("%s request to enable xonxoff iflag=%04x",
2437 __func__, iflag);
2438 /* Try to enable the XON/XOFF on the ftdi_sio
2439 * Set the vstart and vstop -- could have been done up
2440 * above where a lot of other dereferencing is done but
2441 * that would be very inefficient as vstart and vstop
2442 * are not always needed.
2443 */
2444 vstart = termios->c_cc[VSTART];
2445 vstop = termios->c_cc[VSTOP];
2446 urb_value = (vstop << 8) | (vstart);
2447
2448 if (usb_control_msg(dev,
2449 usb_sndctrlpipe(dev, 0),
2450 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2451 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2452 urb_value , (FTDI_SIO_XON_XOFF_HS
2453 | priv->interface),
2454 buf, 0, WDR_TIMEOUT) < 0) {
2455 dev_err(&port->dev, "urb failed to set to "
2456 "xon/xoff flow control\n");
2457 }
2458 } else {
2459 /* else clause to only run if cflag ! CRTSCTS and iflag
2460 * ! XOFF. CHECKME Assuming XON/XOFF handled by tty
2461 * stack - not by device */
2462 dbg("%s Turning off hardware flow control", __func__);
2463 if (usb_control_msg(dev,
2464 usb_sndctrlpipe(dev, 0),
2465 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2466 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2467 0, priv->interface,
2468 buf, 0, WDR_TIMEOUT) < 0) {
2469 dev_err(&port->dev,
2470 "urb failed to clear flow control\n");
2471 }
2472 }
2473
2474 }
2475 return;
2476 }
2477
2478 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
2479 {
2480 struct usb_serial_port *port = tty->driver_data;
2481 struct ftdi_private *priv = usb_get_serial_port_data(port);
2482 unsigned char buf[2];
2483 int ret;
2484
2485 dbg("%s TIOCMGET", __func__);
2486 switch (priv->chip_type) {
2487 case SIO:
2488 /* Request the status from the device */
2489 ret = usb_control_msg(port->serial->dev,
2490 usb_rcvctrlpipe(port->serial->dev, 0),
2491 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2492 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2493 0, 0,
2494 buf, 1, WDR_TIMEOUT);
2495 if (ret < 0)
2496 return ret;
2497 break;
2498 case FT8U232AM:
2499 case FT232BM:
2500 case FT2232C:
2501 case FT232RL:
2502 case FT2232H:
2503 case FT4232H:
2504 /* the 8U232AM returns a two byte value (the sio is a 1 byte
2505 value) - in the same format as the data returned from the in
2506 point */
2507 ret = usb_control_msg(port->serial->dev,
2508 usb_rcvctrlpipe(port->serial->dev, 0),
2509 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2510 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2511 0, priv->interface,
2512 buf, 2, WDR_TIMEOUT);
2513 if (ret < 0)
2514 return ret;
2515 break;
2516 default:
2517 return -EFAULT;
2518 }
2519
2520 return (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
2521 (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) |
2522 (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) |
2523 (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0) |
2524 priv->last_dtr_rts;
2525 }
2526
2527 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
2528 unsigned int set, unsigned int clear)
2529 {
2530 struct usb_serial_port *port = tty->driver_data;
2531 dbg("%s TIOCMSET", __func__);
2532 return update_mctrl(port, set, clear);
2533 }
2534
2535
2536 static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
2537 unsigned int cmd, unsigned long arg)
2538 {
2539 struct usb_serial_port *port = tty->driver_data;
2540 struct ftdi_private *priv = usb_get_serial_port_data(port);
2541
2542 dbg("%s cmd 0x%04x", __func__, cmd);
2543
2544 /* Based on code from acm.c and others */
2545 switch (cmd) {
2546
2547 case TIOCGSERIAL: /* gets serial port data */
2548 return get_serial_info(port,
2549 (struct serial_struct __user *) arg);
2550
2551 case TIOCSSERIAL: /* sets serial port data */
2552 return set_serial_info(tty, port,
2553 (struct serial_struct __user *) arg);
2554
2555 /*
2556 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
2557 * - mask passed in arg for lines of interest
2558 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
2559 * Caller should use TIOCGICOUNT to see which one it was.
2560 *
2561 * This code is borrowed from linux/drivers/char/serial.c
2562 */
2563 case TIOCMIWAIT:
2564 while (priv != NULL) {
2565 interruptible_sleep_on(&priv->delta_msr_wait);
2566 /* see if a signal did it */
2567 if (signal_pending(current))
2568 return -ERESTARTSYS;
2569 else {
2570 char diff = priv->diff_status;
2571
2572 if (diff == 0)
2573 return -EIO; /* no change => error */
2574
2575 /* Consume all events */
2576 priv->diff_status = 0;
2577
2578 /* Return 0 if caller wanted to know about
2579 these bits */
2580 if (((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) ||
2581 ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) ||
2582 ((arg & TIOCM_CD) && (diff & FTDI_RS0_RLSD)) ||
2583 ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS))) {
2584 return 0;
2585 }
2586 /*
2587 * Otherwise caller can't care less about what
2588 * happened,and so we continue to wait for more
2589 * events.
2590 */
2591 }
2592 }
2593 return 0;
2594 default:
2595 break;
2596 }
2597 /* This is not necessarily an error - turns out the higher layers
2598 * will do some ioctls themselves (see comment above)
2599 */
2600 dbg("%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h", __func__, cmd);
2601 return -ENOIOCTLCMD;
2602 }
2603
2604 static void ftdi_throttle(struct tty_struct *tty)
2605 {
2606 struct usb_serial_port *port = tty->driver_data;
2607 struct ftdi_private *priv = usb_get_serial_port_data(port);
2608 unsigned long flags;
2609
2610 dbg("%s - port %d", __func__, port->number);
2611
2612 spin_lock_irqsave(&priv->rx_lock, flags);
2613 priv->rx_flags |= THROTTLED;
2614 spin_unlock_irqrestore(&priv->rx_lock, flags);
2615 }
2616
2617
2618 static void ftdi_unthrottle(struct tty_struct *tty)
2619 {
2620 struct usb_serial_port *port = tty->driver_data;
2621 struct ftdi_private *priv = usb_get_serial_port_data(port);
2622 int actually_throttled;
2623 unsigned long flags;
2624
2625 dbg("%s - port %d", __func__, port->number);
2626
2627 spin_lock_irqsave(&priv->rx_lock, flags);
2628 actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED;
2629 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
2630 spin_unlock_irqrestore(&priv->rx_lock, flags);
2631
2632 if (actually_throttled)
2633 schedule_delayed_work(&priv->rx_work, 0);
2634 }
2635
2636 static int __init ftdi_init(void)
2637 {
2638 int retval;
2639
2640 dbg("%s", __func__);
2641 if (vendor > 0 && product > 0) {
2642 /* Add user specified VID/PID to reserved element of table. */
2643 int i;
2644 for (i = 0; id_table_combined[i].idVendor; i++)
2645 ;
2646 id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
2647 id_table_combined[i].idVendor = vendor;
2648 id_table_combined[i].idProduct = product;
2649 }
2650 retval = usb_serial_register(&ftdi_sio_device);
2651 if (retval)
2652 goto failed_sio_register;
2653 retval = usb_register(&ftdi_driver);
2654 if (retval)
2655 goto failed_usb_register;
2656
2657 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
2658 DRIVER_DESC "\n");
2659 return 0;
2660 failed_usb_register:
2661 usb_serial_deregister(&ftdi_sio_device);
2662 failed_sio_register:
2663 return retval;
2664 }
2665
2666
2667 static void __exit ftdi_exit(void)
2668 {
2669
2670 dbg("%s", __func__);
2671
2672 usb_deregister(&ftdi_driver);
2673 usb_serial_deregister(&ftdi_sio_device);
2674
2675 }
2676
2677
2678 module_init(ftdi_init);
2679 module_exit(ftdi_exit);
2680
2681 MODULE_AUTHOR(DRIVER_AUTHOR);
2682 MODULE_DESCRIPTION(DRIVER_DESC);
2683 MODULE_LICENSE("GPL");
2684
2685 module_param(debug, bool, S_IRUGO | S_IWUSR);
2686 MODULE_PARM_DESC(debug, "Debug enabled or not");
2687 module_param(vendor, ushort, 0);
2688 MODULE_PARM_DESC(vendor, "User specified vendor ID (default="
2689 __MODULE_STRING(FTDI_VID)")");
2690 module_param(product, ushort, 0);
2691 MODULE_PARM_DESC(product, "User specified product ID");
2692
2693 module_param(ndi_latency_timer, int, S_IRUGO | S_IWUSR);
2694 MODULE_PARM_DESC(ndi_latency_timer, "NDI device latency timer override");
Linux with added FPC-III support