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USB: ftdi_sio: re-implement read processing
[linux-2.6/mini2440.git] / drivers / usb / serial / ftdi_sio.c
blob9c60d6d4908a411019f61e7ce73e2a27877a9912
1 /*
2 * USB FTDI SIO driver
3 *
4 * Copyright (C) 1999 - 2001
5 * Greg Kroah-Hartman (greg@kroah.com)
6 * Bill Ryder (bryder@sgi.com)
7 * Copyright (C) 2002
8 * Kuba Ober (kuba@mareimbrium.org)
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * See Documentation/usb/usb-serial.txt for more information on using this
16 * driver
17 *
18 * See http://ftdi-usb-sio.sourceforge.net for upto date testing info
19 * and extra documentation
20 *
21 * Change entries from 2004 and earlier can be found in versions of this
22 * file in kernel versions prior to the 2.6.24 release.
23 *
24 */
25
26 /* Bill Ryder - bryder@sgi.com - wrote the FTDI_SIO implementation */
27 /* Thanx to FTDI for so kindly providing details of the protocol required */
28 /* to talk to the device */
29 /* Thanx to gkh and the rest of the usb dev group for all code I have
30 assimilated :-) */
31
32 #include <linux/kernel.h>
33 #include <linux/errno.h>
34 #include <linux/init.h>
35 #include <linux/slab.h>
36 #include <linux/smp_lock.h>
37 #include <linux/tty.h>
38 #include <linux/tty_driver.h>
39 #include <linux/tty_flip.h>
40 #include <linux/module.h>
41 #include <linux/spinlock.h>
42 #include <linux/uaccess.h>
43 #include <linux/usb.h>
44 #include <linux/serial.h>
45 #include <linux/usb/serial.h>
46 #include "ftdi_sio.h"
47
48 /*
49 * Version Information
50 */
51 #define DRIVER_VERSION "v1.5.0"
52 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober <kuba@mareimbrium.org>"
53 #define DRIVER_DESC "USB FTDI Serial Converters Driver"
54
55 static int debug;
56 static __u16 vendor = FTDI_VID;
57 static __u16 product;
58
59 struct ftdi_private {
60 struct kref kref;
61 ftdi_chip_type_t chip_type;
62 /* type of device, either SIO or FT8U232AM */
63 int baud_base; /* baud base clock for divisor setting */
64 int custom_divisor; /* custom_divisor kludge, this is for
65 baud_base (different from what goes to the
66 chip!) */
67 __u16 last_set_data_urb_value ;
68 /* the last data state set - needed for doing
69 * a break
70 */
71 int write_offset; /* This is the offset in the usb data block to
72 * write the serial data - it varies between
73 * devices
74 */
75 int flags; /* some ASYNC_xxxx flags are supported */
76 unsigned long last_dtr_rts; /* saved modem control outputs */
77 wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
78 char prev_status, diff_status; /* Used for TIOCMIWAIT */
79 struct usb_serial_port *port;
80 __u16 interface; /* FT2232C, FT2232H or FT4232H port interface
81 (0 for FT232/245) */
82
83 speed_t force_baud; /* if non-zero, force the baud rate to
84 this value */
85 int force_rtscts; /* if non-zero, force RTS-CTS to always
86 be enabled */
87
88 unsigned int latency; /* latency setting in use */
89 spinlock_t tx_lock; /* spinlock for transmit state */
90 unsigned long tx_bytes;
91 unsigned long tx_outstanding_bytes;
92 unsigned long tx_outstanding_urbs;
93 unsigned short max_packet_size;
94 };
95
96 /* struct ftdi_sio_quirk is used by devices requiring special attention. */
97 struct ftdi_sio_quirk {
98 int (*probe)(struct usb_serial *);
99 /* Special settings for probed ports. */
100 void (*port_probe)(struct ftdi_private *);
101 };
102
103 static int ftdi_jtag_probe(struct usb_serial *serial);
104 static int ftdi_mtxorb_hack_setup(struct usb_serial *serial);
105 static int ftdi_NDI_device_setup(struct usb_serial *serial);
106 static void ftdi_USB_UIRT_setup(struct ftdi_private *priv);
107 static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv);
108
109 static struct ftdi_sio_quirk ftdi_jtag_quirk = {
110 .probe = ftdi_jtag_probe,
111 };
112
113 static struct ftdi_sio_quirk ftdi_mtxorb_hack_quirk = {
114 .probe = ftdi_mtxorb_hack_setup,
115 };
116
117 static struct ftdi_sio_quirk ftdi_NDI_device_quirk = {
118 .probe = ftdi_NDI_device_setup,
119 };
120
121 static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = {
122 .port_probe = ftdi_USB_UIRT_setup,
123 };
124
125 static struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = {
126 .port_probe = ftdi_HE_TIRA1_setup,
127 };
128
129 /*
130 * The 8U232AM has the same API as the sio except for:
131 * - it can support MUCH higher baudrates; up to:
132 * o 921600 for RS232 and 2000000 for RS422/485 at 48MHz
133 * o 230400 at 12MHz
134 * so .. 8U232AM's baudrate setting codes are different
135 * - it has a two byte status code.
136 * - it returns characters every 16ms (the FTDI does it every 40ms)
137 *
138 * the bcdDevice value is used to differentiate FT232BM and FT245BM from
139 * the earlier FT8U232AM and FT8U232BM. For now, include all known VID/PID
140 * combinations in both tables.
141 * FIXME: perhaps bcdDevice can also identify 12MHz FT8U232AM devices,
142 * but I don't know if those ever went into mass production. [Ian Abbott]
143 */
144
145
146
147 static struct usb_device_id id_table_combined [] = {
148 { USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) },
149 { USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) },
150 { USB_DEVICE(FTDI_VID, FTDI_CANDAPTER_PID) },
151 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_0_PID) },
152 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_1_PID) },
153 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_2_PID) },
154 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_3_PID) },
155 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_4_PID) },
156 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_5_PID) },
157 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_6_PID) },
158 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_7_PID) },
159 { USB_DEVICE(FTDI_VID, FTDI_ACTZWAVE_PID) },
160 { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) },
161 { USB_DEVICE(FTDI_VID, FTDI_IPLUS_PID) },
162 { USB_DEVICE(FTDI_VID, FTDI_IPLUS2_PID) },
163 { USB_DEVICE(FTDI_VID, FTDI_DMX4ALL) },
164 { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) },
165 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) },
166 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) },
167 { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) },
168 { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) },
169 { USB_DEVICE(FTDI_VID, FTDI_4232H_PID) },
170 { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) },
171 { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) },
172 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) },
173 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_SNIFFER_PID) },
174 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_THROTTLE_PID) },
175 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_GATEWAY_PID) },
176 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) },
177 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) },
178 { USB_DEVICE(FTDI_VID, FTDI_SPROG_II) },
179 { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) },
180 { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) },
181 { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) },
182 { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) },
183 { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) },
184 { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) },
185 { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) },
186 { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) },
187 { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) },
188 { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) },
189 { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) },
190 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) },
191 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) },
192 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) },
193 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) },
194 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) },
195 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) },
196 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) },
197 { USB_DEVICE(FTDI_VID, FTDI_R2000KU_TRUE_RNG) },
198 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0100_PID) },
199 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0101_PID) },
200 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0102_PID) },
201 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0103_PID) },
202 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0104_PID) },
203 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0105_PID) },
204 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0106_PID) },
205 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0107_PID) },
206 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0108_PID) },
207 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0109_PID) },
208 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010A_PID) },
209 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010B_PID) },
210 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010C_PID) },
211 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010D_PID) },
212 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010E_PID) },
213 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010F_PID) },
214 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0110_PID) },
215 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0111_PID) },
216 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0112_PID) },
217 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0113_PID) },
218 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0114_PID) },
219 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0115_PID) },
220 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0116_PID) },
221 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0117_PID) },
222 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0118_PID) },
223 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0119_PID) },
224 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011A_PID) },
225 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011B_PID) },
226 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011C_PID) },
227 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011D_PID) },
228 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011E_PID) },
229 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011F_PID) },
230 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0120_PID) },
231 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0121_PID) },
232 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0122_PID) },
233 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0123_PID) },
234 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0124_PID) },
235 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0125_PID) },
236 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0126_PID) },
237 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0127_PID),
238 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
239 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0128_PID) },
240 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0129_PID) },
241 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012A_PID) },
242 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012B_PID) },
243 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012C_PID),
244 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
245 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012D_PID) },
246 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012E_PID) },
247 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012F_PID) },
248 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0130_PID) },
249 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0131_PID) },
250 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0132_PID) },
251 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0133_PID) },
252 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0134_PID) },
253 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0135_PID) },
254 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0136_PID) },
255 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0137_PID) },
256 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0138_PID) },
257 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0139_PID) },
258 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013A_PID) },
259 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013B_PID) },
260 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013C_PID) },
261 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013D_PID) },
262 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013E_PID) },
263 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013F_PID) },
264 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0140_PID) },
265 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0141_PID) },
266 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0142_PID) },
267 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0143_PID) },
268 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0144_PID) },
269 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0145_PID) },
270 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0146_PID) },
271 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0147_PID) },
272 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0148_PID) },
273 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0149_PID) },
274 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014A_PID) },
275 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014B_PID) },
276 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014C_PID) },
277 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014D_PID) },
278 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014E_PID) },
279 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014F_PID) },
280 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0150_PID) },
281 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0151_PID) },
282 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0152_PID) },
283 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0153_PID),
284 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
285 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0154_PID),
286 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
287 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0155_PID),
288 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
289 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0156_PID),
290 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
291 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0157_PID),
292 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
293 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0158_PID),
294 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
295 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0159_PID) },
296 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015A_PID) },
297 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015B_PID) },
298 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015C_PID) },
299 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015D_PID) },
300 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015E_PID) },
301 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015F_PID) },
302 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0160_PID) },
303 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0161_PID) },
304 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0162_PID) },
305 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0163_PID) },
306 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0164_PID) },
307 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0165_PID) },
308 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0166_PID) },
309 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0167_PID) },
310 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0168_PID) },
311 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0169_PID) },
312 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016A_PID) },
313 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016B_PID) },
314 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016C_PID) },
315 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016D_PID) },
316 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016E_PID) },
317 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016F_PID) },
318 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0170_PID) },
319 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0171_PID) },
320 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0172_PID) },
321 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0173_PID) },
322 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0174_PID) },
323 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0175_PID) },
324 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0176_PID) },
325 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0177_PID) },
326 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0178_PID) },
327 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0179_PID) },
328 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017A_PID) },
329 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017B_PID) },
330 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017C_PID) },
331 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017D_PID) },
332 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017E_PID) },
333 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017F_PID) },
334 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0180_PID) },
335 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0181_PID) },
336 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0182_PID) },
337 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0183_PID) },
338 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0184_PID) },
339 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0185_PID) },
340 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0186_PID) },
341 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0187_PID) },
342 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0188_PID) },
343 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0189_PID) },
344 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018A_PID) },
345 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018B_PID) },
346 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018C_PID) },
347 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018D_PID) },
348 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018E_PID) },
349 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018F_PID) },
350 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0190_PID) },
351 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0191_PID) },
352 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0192_PID) },
353 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0193_PID) },
354 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0194_PID) },
355 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0195_PID) },
356 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0196_PID) },
357 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0197_PID) },
358 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0198_PID) },
359 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0199_PID) },
360 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019A_PID) },
361 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019B_PID) },
362 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019C_PID) },
363 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019D_PID) },
364 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019E_PID) },
365 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019F_PID) },
366 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A0_PID) },
367 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A1_PID) },
368 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A2_PID) },
369 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A3_PID) },
370 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A4_PID) },
371 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A5_PID) },
372 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A6_PID) },
373 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A7_PID) },
374 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A8_PID) },
375 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A9_PID) },
376 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AA_PID) },
377 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AB_PID) },
378 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AC_PID) },
379 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AD_PID) },
380 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AE_PID) },
381 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AF_PID) },
382 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B0_PID) },
383 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B1_PID) },
384 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B2_PID) },
385 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B3_PID) },
386 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B4_PID) },
387 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B5_PID) },
388 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B6_PID) },
389 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B7_PID) },
390 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B8_PID) },
391 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B9_PID) },
392 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BA_PID) },
393 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BB_PID) },
394 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BC_PID) },
395 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BD_PID) },
396 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BE_PID) },
397 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BF_PID) },
398 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C0_PID) },
399 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C1_PID) },
400 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C2_PID) },
401 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C3_PID) },
402 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C4_PID) },
403 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C5_PID) },
404 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C6_PID) },
405 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C7_PID) },
406 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C8_PID) },
407 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C9_PID) },
408 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CA_PID) },
409 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CB_PID) },
410 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CC_PID) },
411 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CD_PID) },
412 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CE_PID) },
413 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CF_PID) },
414 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D0_PID) },
415 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D1_PID) },
416 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D2_PID) },
417 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D3_PID) },
418 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D4_PID) },
419 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D5_PID) },
420 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D6_PID) },
421 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D7_PID) },
422 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D8_PID) },
423 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D9_PID) },
424 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DA_PID) },
425 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DB_PID) },
426 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DC_PID) },
427 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DD_PID) },
428 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DE_PID) },
429 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DF_PID) },
430 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E0_PID) },
431 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E1_PID) },
432 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E2_PID) },
433 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E3_PID) },
434 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E4_PID) },
435 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E5_PID) },
436 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E6_PID) },
437 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E7_PID) },
438 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E8_PID) },
439 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E9_PID) },
440 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EA_PID) },
441 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EB_PID) },
442 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EC_PID) },
443 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01ED_PID) },
444 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EE_PID) },
445 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EF_PID) },
446 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F0_PID) },
447 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F1_PID) },
448 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F2_PID) },
449 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F3_PID) },
450 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F4_PID) },
451 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F5_PID) },
452 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F6_PID) },
453 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F7_PID) },
454 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F8_PID) },
455 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F9_PID) },
456 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FA_PID) },
457 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FB_PID) },
458 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FC_PID) },
459 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FD_PID) },
460 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FE_PID) },
461 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FF_PID) },
462 { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) },
463 { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) },
464 { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) },
465 { USB_DEVICE(FTDI_VID, FTDI_USBX_707_PID) },
466 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) },
467 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) },
468 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) },
469 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) },
470 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2106_PID) },
471 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) },
472 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) },
473 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) },
474 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) },
475 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) },
476 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) },
477 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) },
478 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) },
479 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) },
480 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) },
481 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) },
482 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) },
483 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) },
484 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) },
485 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) },
486 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) },
487 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) },
488 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) },
489 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) },
490 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) },
491 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) },
492 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) },
493 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) },
494 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) },
495 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) },
496 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) },
497 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) },
498 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) },
499 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) },
500 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) },
501 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) },
502 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) },
503 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) },
504 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) },
505 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) },
506 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) },
507 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) },
508 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) },
509 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) },
510 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) },
511 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) },
512 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) },
513 { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) },
514 { USB_DEVICE(OCT_VID, OCT_US101_PID) },
515 { USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID),
516 .driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk },
517 { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID),
518 .driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk },
519 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) },
520 { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) },
521 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) },
522 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) },
523 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) },
524 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) },
525 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) },
526 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) },
527 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) },
528 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) },
529 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) },
530 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) },
531 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) },
532 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) },
533 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) },
534 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) },
535 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) },
536 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) },
537 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) },
538 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) },
539 { USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) },
540 { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) },
541 { USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) },
542 { USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) },
543 { USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) },
544 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) },
545 { USB_DEVICE(FTDI_VID, FTDI_IBS_US485_PID) },
546 { USB_DEVICE(FTDI_VID, FTDI_IBS_PICPRO_PID) },
547 { USB_DEVICE(FTDI_VID, FTDI_IBS_PCMCIA_PID) },
548 { USB_DEVICE(FTDI_VID, FTDI_IBS_PK1_PID) },
549 { USB_DEVICE(FTDI_VID, FTDI_IBS_RS232MON_PID) },
550 { USB_DEVICE(FTDI_VID, FTDI_IBS_APP70_PID) },
551 { USB_DEVICE(FTDI_VID, FTDI_IBS_PEDO_PID) },
552 { USB_DEVICE(FTDI_VID, FTDI_IBS_PROD_PID) },
553 /*
554 * Due to many user requests for multiple ELV devices we enable
555 * them by default.
556 */
557 { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) },
558 { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) },
559 { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) },
560 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) },
561 { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) },
562 { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) },
563 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) },
564 { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) },
565 { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) },
566 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) },
567 { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) },
568 { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) },
569 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) },
570 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) },
571 { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) },
572 { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) },
573 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) },
574 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) },
575 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1010PC_PID) },
576 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) },
577 { USB_DEVICE(FTDI_VID, FTDI_ELV_HS485_PID) },
578 { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) },
579 { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) },
580 { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) },
581 { USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) },
582 { USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) },
583 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) },
584 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) },
585 { USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) },
586 { USB_DEVICE(FTDI_VID, FTDI_CCSLOAD_N_GO_3_PID) },
587 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU64_4_PID) },
588 { USB_DEVICE(FTDI_VID, FTDI_CCSPRIME8_5_PID) },
589 { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) },
590 { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) },
591 { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) },
592 { USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) },
593 { USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) },
594 { USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) },
595 { USB_DEVICE(FTDI_VID, FTDI_OCEANIC_PID) },
596 { USB_DEVICE(TTI_VID, TTI_QL355P_PID) },
597 { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) },
598 { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) },
599 { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) },
600 { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) },
601 { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) },
602 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) },
603 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) },
604 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) },
605 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) },
606 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) },
607 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) },
608 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) },
609 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) },
610 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) },
611 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) },
612 { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
613 { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) },
614 { USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) },
615 { USB_DEVICE(FTDI_VID, FTDI_MHAM_YS_PID) },
616 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) },
617 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) },
618 { USB_DEVICE(FTDI_VID, FTDI_MHAM_IC_PID) },
619 { USB_DEVICE(FTDI_VID, FTDI_MHAM_DB9_PID) },
620 { USB_DEVICE(FTDI_VID, FTDI_MHAM_RS232_PID) },
621 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y9_PID) },
622 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) },
623 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) },
624 { USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) },
625 { USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) },
626 { USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) },
627 { USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) },
628 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) },
629 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) },
630 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) },
631 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HRC_PID) },
632 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16IC_PID) },
633 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) },
634 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) },
635 { USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) },
636 { USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) },
637 { USB_DEVICE(FTDI_VID, FTDI_ECLO_COM_1WIRE_PID) },
638 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) },
639 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) },
640 { USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) },
641 { USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) },
642 { USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) },
643 { USB_DEVICE(ICOM_ID1_VID, ICOM_ID1_PID) },
644 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_TMU_PID) },
645 { USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) },
646 { USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) },
647 { USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) },
648 { USB_DEVICE(TESTO_VID, TESTO_USB_INTERFACE_PID) },
649 { USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) },
650 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) },
651 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) },
652 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) },
653 { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) },
654 { USB_DEVICE(FTDI_VID, FTDI_NDI_HUC_PID),
655 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
656 { USB_DEVICE(FTDI_VID, FTDI_NDI_SPECTRA_SCU_PID),
657 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
658 { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_2_PID),
659 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
660 { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_3_PID),
661 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
662 { USB_DEVICE(FTDI_VID, FTDI_NDI_AURORA_SCU_PID),
663 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
664 { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
665 { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) },
666 { USB_DEVICE(FTDI_VID, FTDI_PHI_FISCO_PID) },
667 { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) },
668 { USB_DEVICE(FTDI_VID, FTDI_ELSTER_UNICOM_PID) },
669 { USB_DEVICE(FTDI_VID, FTDI_PROPOX_JTAGCABLEII_PID) },
670 { USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID),
671 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
672 { USB_DEVICE(FIC_VID, FIC_NEO1973_DEBUG_PID),
673 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
674 { USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID),
675 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
676 { USB_DEVICE(FTDI_VID, LMI_LM3S_DEVEL_BOARD_PID),
677 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
678 { USB_DEVICE(FTDI_VID, LMI_LM3S_EVAL_BOARD_PID),
679 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
680 { USB_DEVICE(FTDI_VID, FTDI_TURTELIZER_PID),
681 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
682 { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
683 { USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) },
684 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO4x4_PID) },
685 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DGQG_PID) },
686 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DUSB_PID) },
687 { USB_DEVICE(ALTI2_VID, ALTI2_N3_PID) },
688 { USB_DEVICE(FTDI_VID, DIEBOLD_BCS_SE923_PID) },
689 { USB_DEVICE(ATMEL_VID, STK541_PID) },
690 { USB_DEVICE(DE_VID, STB_PID) },
691 { USB_DEVICE(DE_VID, WHT_PID) },
692 { USB_DEVICE(ADI_VID, ADI_GNICE_PID),
693 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
694 { USB_DEVICE(ADI_VID, ADI_GNICEPLUS_PID),
695 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
696 { USB_DEVICE(JETI_VID, JETI_SPC1201_PID) },
697 { USB_DEVICE(MARVELL_VID, MARVELL_SHEEVAPLUG_PID),
698 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
699 { USB_DEVICE(LARSENBRUSGAARD_VID, LB_ALTITRACK_PID) },
700 { USB_DEVICE(GN_OTOMETRICS_VID, AURICAL_USB_PID) },
701 { USB_DEVICE(BAYER_VID, BAYER_CONTOUR_CABLE_PID) },
702 { USB_DEVICE(FTDI_VID, MARVELL_OPENRD_PID),
703 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
704 { USB_DEVICE(FTDI_VID, HAMEG_HO820_PID) },
705 { USB_DEVICE(FTDI_VID, HAMEG_HO870_PID) },
706 { }, /* Optional parameter entry */
707 { } /* Terminating entry */
708 };
709
710 MODULE_DEVICE_TABLE(usb, id_table_combined);
711
712 static struct usb_driver ftdi_driver = {
713 .name = "ftdi_sio",
714 .probe = usb_serial_probe,
715 .disconnect = usb_serial_disconnect,
716 .id_table = id_table_combined,
717 .no_dynamic_id = 1,
718 };
719
720 static const char *ftdi_chip_name[] = {
721 [SIO] = "SIO", /* the serial part of FT8U100AX */
722 [FT8U232AM] = "FT8U232AM",
723 [FT232BM] = "FT232BM",
724 [FT2232C] = "FT2232C",
725 [FT232RL] = "FT232RL",
726 [FT2232H] = "FT2232H",
727 [FT4232H] = "FT4232H"
728 };
729
730
731 /* Constants for read urb and write urb */
732 #define BUFSZ 512
733
734 /* Used for TIOCMIWAIT */
735 #define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD)
736 #define FTDI_STATUS_B1_MASK (FTDI_RS_BI)
737 /* End TIOCMIWAIT */
738
739 #define FTDI_IMPL_ASYNC_FLAGS = (ASYNC_SPD_HI | ASYNC_SPD_VHI \
740 | ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP)
741
742 /* function prototypes for a FTDI serial converter */
743 static int ftdi_sio_probe(struct usb_serial *serial,
744 const struct usb_device_id *id);
745 static int ftdi_sio_port_probe(struct usb_serial_port *port);
746 static int ftdi_sio_port_remove(struct usb_serial_port *port);
747 static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port);
748 static void ftdi_close(struct usb_serial_port *port);
749 static void ftdi_dtr_rts(struct usb_serial_port *port, int on);
750 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
751 const unsigned char *buf, int count);
752 static int ftdi_write_room(struct tty_struct *tty);
753 static int ftdi_chars_in_buffer(struct tty_struct *tty);
754 static void ftdi_write_bulk_callback(struct urb *urb);
755 static void ftdi_read_bulk_callback(struct urb *urb);
756 static void ftdi_process_read(struct usb_serial_port *port);
757 static void ftdi_set_termios(struct tty_struct *tty,
758 struct usb_serial_port *port, struct ktermios *old);
759 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file);
760 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
761 unsigned int set, unsigned int clear);
762 static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
763 unsigned int cmd, unsigned long arg);
764 static void ftdi_break_ctl(struct tty_struct *tty, int break_state);
765 static void ftdi_throttle(struct tty_struct *tty);
766 static void ftdi_unthrottle(struct tty_struct *tty);
767
768 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base);
769 static unsigned short int ftdi_232am_baud_to_divisor(int baud);
770 static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base);
771 static __u32 ftdi_232bm_baud_to_divisor(int baud);
772 static __u32 ftdi_2232h_baud_base_to_divisor(int baud, int base);
773 static __u32 ftdi_2232h_baud_to_divisor(int baud);
774
775 static struct usb_serial_driver ftdi_sio_device = {
776 .driver = {
777 .owner = THIS_MODULE,
778 .name = "ftdi_sio",
779 },
780 .description = "FTDI USB Serial Device",
781 .usb_driver = &ftdi_driver ,
782 .id_table = id_table_combined,
783 .num_ports = 1,
784 .probe = ftdi_sio_probe,
785 .port_probe = ftdi_sio_port_probe,
786 .port_remove = ftdi_sio_port_remove,
787 .open = ftdi_open,
788 .close = ftdi_close,
789 .dtr_rts = ftdi_dtr_rts,
790 .throttle = ftdi_throttle,
791 .unthrottle = ftdi_unthrottle,
792 .write = ftdi_write,
793 .write_room = ftdi_write_room,
794 .chars_in_buffer = ftdi_chars_in_buffer,
795 .read_bulk_callback = ftdi_read_bulk_callback,
796 .write_bulk_callback = ftdi_write_bulk_callback,
797 .tiocmget = ftdi_tiocmget,
798 .tiocmset = ftdi_tiocmset,
799 .ioctl = ftdi_ioctl,
800 .set_termios = ftdi_set_termios,
801 .break_ctl = ftdi_break_ctl,
802 };
803
804
805 #define WDR_TIMEOUT 5000 /* default urb timeout */
806 #define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */
807
808 /* High and low are for DTR, RTS etc etc */
809 #define HIGH 1
810 #define LOW 0
811
812 /* number of outstanding urbs to prevent userspace DoS from happening */
813 #define URB_UPPER_LIMIT 42
814
815 /*
816 * ***************************************************************************
817 * Utility functions
818 * ***************************************************************************
819 */
820
821 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base)
822 {
823 unsigned short int divisor;
824 /* divisor shifted 3 bits to the left */
825 int divisor3 = base / 2 / baud;
826 if ((divisor3 & 0x7) == 7)
827 divisor3++; /* round x.7/8 up to x+1 */
828 divisor = divisor3 >> 3;
829 divisor3 &= 0x7;
830 if (divisor3 == 1)
831 divisor |= 0xc000;
832 else if (divisor3 >= 4)
833 divisor |= 0x4000;
834 else if (divisor3 != 0)
835 divisor |= 0x8000;
836 else if (divisor == 1)
837 divisor = 0; /* special case for maximum baud rate */
838 return divisor;
839 }
840
841 static unsigned short int ftdi_232am_baud_to_divisor(int baud)
842 {
843 return ftdi_232am_baud_base_to_divisor(baud, 48000000);
844 }
845
846 static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base)
847 {
848 static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
849 __u32 divisor;
850 /* divisor shifted 3 bits to the left */
851 int divisor3 = base / 2 / baud;
852 divisor = divisor3 >> 3;
853 divisor |= (__u32)divfrac[divisor3 & 0x7] << 14;
854 /* Deal with special cases for highest baud rates. */
855 if (divisor == 1)
856 divisor = 0;
857 else if (divisor == 0x4001)
858 divisor = 1;
859 return divisor;
860 }
861
862 static __u32 ftdi_232bm_baud_to_divisor(int baud)
863 {
864 return ftdi_232bm_baud_base_to_divisor(baud, 48000000);
865 }
866
867 static __u32 ftdi_2232h_baud_base_to_divisor(int baud, int base)
868 {
869 static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
870 __u32 divisor;
871 int divisor3;
872
873 /* hi-speed baud rate is 10-bit sampling instead of 16-bit */
874 divisor3 = (base / 10 / baud) * 8;
875
876 divisor = divisor3 >> 3;
877 divisor |= (__u32)divfrac[divisor3 & 0x7] << 14;
878 /* Deal with special cases for highest baud rates. */
879 if (divisor == 1)
880 divisor = 0;
881 else if (divisor == 0x4001)
882 divisor = 1;
883 /*
884 * Set this bit to turn off a divide by 2.5 on baud rate generator
885 * This enables baud rates up to 12Mbaud but cannot reach below 1200
886 * baud with this bit set
887 */
888 divisor |= 0x00020000;
889 return divisor;
890 }
891
892 static __u32 ftdi_2232h_baud_to_divisor(int baud)
893 {
894 return ftdi_2232h_baud_base_to_divisor(baud, 120000000);
895 }
896
897 #define set_mctrl(port, set) update_mctrl((port), (set), 0)
898 #define clear_mctrl(port, clear) update_mctrl((port), 0, (clear))
899
900 static int update_mctrl(struct usb_serial_port *port, unsigned int set,
901 unsigned int clear)
902 {
903 struct ftdi_private *priv = usb_get_serial_port_data(port);
904 char *buf;
905 unsigned urb_value;
906 int rv;
907
908 if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
909 dbg("%s - DTR|RTS not being set|cleared", __func__);
910 return 0; /* no change */
911 }
912
913 buf = kmalloc(1, GFP_NOIO);
914 if (!buf)
915 return -ENOMEM;
916
917 clear &= ~set; /* 'set' takes precedence over 'clear' */
918 urb_value = 0;
919 if (clear & TIOCM_DTR)
920 urb_value |= FTDI_SIO_SET_DTR_LOW;
921 if (clear & TIOCM_RTS)
922 urb_value |= FTDI_SIO_SET_RTS_LOW;
923 if (set & TIOCM_DTR)
924 urb_value |= FTDI_SIO_SET_DTR_HIGH;
925 if (set & TIOCM_RTS)
926 urb_value |= FTDI_SIO_SET_RTS_HIGH;
927 rv = usb_control_msg(port->serial->dev,
928 usb_sndctrlpipe(port->serial->dev, 0),
929 FTDI_SIO_SET_MODEM_CTRL_REQUEST,
930 FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
931 urb_value, priv->interface,
932 buf, 0, WDR_TIMEOUT);
933
934 kfree(buf);
935 if (rv < 0) {
936 dbg("%s Error from MODEM_CTRL urb: DTR %s, RTS %s",
937 __func__,
938 (set & TIOCM_DTR) ? "HIGH" :
939 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
940 (set & TIOCM_RTS) ? "HIGH" :
941 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
942 } else {
943 dbg("%s - DTR %s, RTS %s", __func__,
944 (set & TIOCM_DTR) ? "HIGH" :
945 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
946 (set & TIOCM_RTS) ? "HIGH" :
947 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
948 /* FIXME: locking on last_dtr_rts */
949 priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set;
950 }
951 return rv;
952 }
953
954
955 static __u32 get_ftdi_divisor(struct tty_struct *tty,
956 struct usb_serial_port *port)
957 { /* get_ftdi_divisor */
958 struct ftdi_private *priv = usb_get_serial_port_data(port);
959 __u32 div_value = 0;
960 int div_okay = 1;
961 int baud;
962
963 /*
964 * The logic involved in setting the baudrate can be cleanly split into
965 * 3 steps.
966 * 1. Standard baud rates are set in tty->termios->c_cflag
967 * 2. If these are not enough, you can set any speed using alt_speed as
968 * follows:
969 * - set tty->termios->c_cflag speed to B38400
970 * - set your real speed in tty->alt_speed; it gets ignored when
971 * alt_speed==0, (or)
972 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
973 * follows:
974 * flags & ASYNC_SPD_MASK == ASYNC_SPD_[HI, VHI, SHI, WARP],
975 * this just sets alt_speed to (HI: 57600, VHI: 115200,
976 * SHI: 230400, WARP: 460800)
977 * ** Steps 1, 2 are done courtesy of tty_get_baud_rate
978 * 3. You can also set baud rate by setting custom divisor as follows
979 * - set tty->termios->c_cflag speed to B38400
980 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
981 * follows:
982 * o flags & ASYNC_SPD_MASK == ASYNC_SPD_CUST
983 * o custom_divisor set to baud_base / your_new_baudrate
984 * ** Step 3 is done courtesy of code borrowed from serial.c
985 * I should really spend some time and separate + move this common
986 * code to serial.c, it is replicated in nearly every serial driver
987 * you see.
988 */
989
990 /* 1. Get the baud rate from the tty settings, this observes
991 alt_speed hack */
992
993 baud = tty_get_baud_rate(tty);
994 dbg("%s - tty_get_baud_rate reports speed %d", __func__, baud);
995
996 /* 2. Observe async-compatible custom_divisor hack, update baudrate
997 if needed */
998
999 if (baud == 38400 &&
1000 ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
1001 (priv->custom_divisor)) {
1002 baud = priv->baud_base / priv->custom_divisor;
1003 dbg("%s - custom divisor %d sets baud rate to %d",
1004 __func__, priv->custom_divisor, baud);
1005 }
1006
1007 /* 3. Convert baudrate to device-specific divisor */
1008
1009 if (!baud)
1010 baud = 9600;
1011 switch (priv->chip_type) {
1012 case SIO: /* SIO chip */
1013 switch (baud) {
1014 case 300: div_value = ftdi_sio_b300; break;
1015 case 600: div_value = ftdi_sio_b600; break;
1016 case 1200: div_value = ftdi_sio_b1200; break;
1017 case 2400: div_value = ftdi_sio_b2400; break;
1018 case 4800: div_value = ftdi_sio_b4800; break;
1019 case 9600: div_value = ftdi_sio_b9600; break;
1020 case 19200: div_value = ftdi_sio_b19200; break;
1021 case 38400: div_value = ftdi_sio_b38400; break;
1022 case 57600: div_value = ftdi_sio_b57600; break;
1023 case 115200: div_value = ftdi_sio_b115200; break;
1024 } /* baud */
1025 if (div_value == 0) {
1026 dbg("%s - Baudrate (%d) requested is not supported",
1027 __func__, baud);
1028 div_value = ftdi_sio_b9600;
1029 baud = 9600;
1030 div_okay = 0;
1031 }
1032 break;
1033 case FT8U232AM: /* 8U232AM chip */
1034 if (baud <= 3000000) {
1035 div_value = ftdi_232am_baud_to_divisor(baud);
1036 } else {
1037 dbg("%s - Baud rate too high!", __func__);
1038 baud = 9600;
1039 div_value = ftdi_232am_baud_to_divisor(9600);
1040 div_okay = 0;
1041 }
1042 break;
1043 case FT232BM: /* FT232BM chip */
1044 case FT2232C: /* FT2232C chip */
1045 case FT232RL:
1046 if (baud <= 3000000) {
1047 __u16 product_id = le16_to_cpu(
1048 port->serial->dev->descriptor.idProduct);
1049 if (((FTDI_NDI_HUC_PID == product_id) ||
1050 (FTDI_NDI_SPECTRA_SCU_PID == product_id) ||
1051 (FTDI_NDI_FUTURE_2_PID == product_id) ||
1052 (FTDI_NDI_FUTURE_3_PID == product_id) ||
1053 (FTDI_NDI_AURORA_SCU_PID == product_id)) &&
1054 (baud == 19200)) {
1055 baud = 1200000;
1056 }
1057 div_value = ftdi_232bm_baud_to_divisor(baud);
1058 } else {
1059 dbg("%s - Baud rate too high!", __func__);
1060 div_value = ftdi_232bm_baud_to_divisor(9600);
1061 div_okay = 0;
1062 baud = 9600;
1063 }
1064 break;
1065 case FT2232H: /* FT2232H chip */
1066 case FT4232H: /* FT4232H chip */
1067 if ((baud <= 12000000) & (baud >= 1200)) {
1068 div_value = ftdi_2232h_baud_to_divisor(baud);
1069 } else if (baud < 1200) {
1070 div_value = ftdi_232bm_baud_to_divisor(baud);
1071 } else {
1072 dbg("%s - Baud rate too high!", __func__);
1073 div_value = ftdi_232bm_baud_to_divisor(9600);
1074 div_okay = 0;
1075 baud = 9600;
1076 }
1077 break;
1078 } /* priv->chip_type */
1079
1080 if (div_okay) {
1081 dbg("%s - Baud rate set to %d (divisor 0x%lX) on chip %s",
1082 __func__, baud, (unsigned long)div_value,
1083 ftdi_chip_name[priv->chip_type]);
1084 }
1085
1086 tty_encode_baud_rate(tty, baud, baud);
1087 return div_value;
1088 }
1089
1090 static int change_speed(struct tty_struct *tty, struct usb_serial_port *port)
1091 {
1092 struct ftdi_private *priv = usb_get_serial_port_data(port);
1093 char *buf;
1094 __u16 urb_value;
1095 __u16 urb_index;
1096 __u32 urb_index_value;
1097 int rv;
1098
1099 buf = kmalloc(1, GFP_NOIO);
1100 if (!buf)
1101 return -ENOMEM;
1102
1103 urb_index_value = get_ftdi_divisor(tty, port);
1104 urb_value = (__u16)urb_index_value;
1105 urb_index = (__u16)(urb_index_value >> 16);
1106 if (priv->interface) { /* FT2232C */
1107 urb_index = (__u16)((urb_index << 8) | priv->interface);
1108 }
1109
1110 rv = usb_control_msg(port->serial->dev,
1111 usb_sndctrlpipe(port->serial->dev, 0),
1112 FTDI_SIO_SET_BAUDRATE_REQUEST,
1113 FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
1114 urb_value, urb_index,
1115 buf, 0, WDR_SHORT_TIMEOUT);
1116
1117 kfree(buf);
1118 return rv;
1119 }
1120
1121 static int write_latency_timer(struct usb_serial_port *port)
1122 {
1123 struct ftdi_private *priv = usb_get_serial_port_data(port);
1124 struct usb_device *udev = port->serial->dev;
1125 char buf[1];
1126 int rv = 0;
1127 int l = priv->latency;
1128
1129 if (priv->flags & ASYNC_LOW_LATENCY)
1130 l = 1;
1131
1132 dbg("%s: setting latency timer = %i", __func__, l);
1133
1134 rv = usb_control_msg(udev,
1135 usb_sndctrlpipe(udev, 0),
1136 FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
1137 FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
1138 l, priv->interface,
1139 buf, 0, WDR_TIMEOUT);
1140
1141 if (rv < 0)
1142 dev_err(&port->dev, "Unable to write latency timer: %i\n", rv);
1143 return rv;
1144 }
1145
1146 static int read_latency_timer(struct usb_serial_port *port)
1147 {
1148 struct ftdi_private *priv = usb_get_serial_port_data(port);
1149 struct usb_device *udev = port->serial->dev;
1150 unsigned short latency = 0;
1151 int rv = 0;
1152
1153
1154 dbg("%s", __func__);
1155
1156 rv = usb_control_msg(udev,
1157 usb_rcvctrlpipe(udev, 0),
1158 FTDI_SIO_GET_LATENCY_TIMER_REQUEST,
1159 FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE,
1160 0, priv->interface,
1161 (char *) &latency, 1, WDR_TIMEOUT);
1162
1163 if (rv < 0) {
1164 dev_err(&port->dev, "Unable to read latency timer: %i\n", rv);
1165 return -EIO;
1166 }
1167 return latency;
1168 }
1169
1170 static int get_serial_info(struct usb_serial_port *port,
1171 struct serial_struct __user *retinfo)
1172 {
1173 struct ftdi_private *priv = usb_get_serial_port_data(port);
1174 struct serial_struct tmp;
1175
1176 if (!retinfo)
1177 return -EFAULT;
1178 memset(&tmp, 0, sizeof(tmp));
1179 tmp.flags = priv->flags;
1180 tmp.baud_base = priv->baud_base;
1181 tmp.custom_divisor = priv->custom_divisor;
1182 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1183 return -EFAULT;
1184 return 0;
1185 } /* get_serial_info */
1186
1187
1188 static int set_serial_info(struct tty_struct *tty,
1189 struct usb_serial_port *port, struct serial_struct __user *newinfo)
1190 { /* set_serial_info */
1191 struct ftdi_private *priv = usb_get_serial_port_data(port);
1192 struct serial_struct new_serial;
1193 struct ftdi_private old_priv;
1194
1195 if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
1196 return -EFAULT;
1197
1198 lock_kernel();
1199 old_priv = *priv;
1200
1201 /* Do error checking and permission checking */
1202
1203 if (!capable(CAP_SYS_ADMIN)) {
1204 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
1205 (priv->flags & ~ASYNC_USR_MASK))) {
1206 unlock_kernel();
1207 return -EPERM;
1208 }
1209 priv->flags = ((priv->flags & ~ASYNC_USR_MASK) |
1210 (new_serial.flags & ASYNC_USR_MASK));
1211 priv->custom_divisor = new_serial.custom_divisor;
1212 goto check_and_exit;
1213 }
1214
1215 if ((new_serial.baud_base != priv->baud_base) &&
1216 (new_serial.baud_base < 9600)) {
1217 unlock_kernel();
1218 return -EINVAL;
1219 }
1220
1221 /* Make the changes - these are privileged changes! */
1222
1223 priv->flags = ((priv->flags & ~ASYNC_FLAGS) |
1224 (new_serial.flags & ASYNC_FLAGS));
1225 priv->custom_divisor = new_serial.custom_divisor;
1226
1227 write_latency_timer(port);
1228
1229 check_and_exit:
1230 if ((old_priv.flags & ASYNC_SPD_MASK) !=
1231 (priv->flags & ASYNC_SPD_MASK)) {
1232 if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
1233 tty->alt_speed = 57600;
1234 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
1235 tty->alt_speed = 115200;
1236 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
1237 tty->alt_speed = 230400;
1238 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
1239 tty->alt_speed = 460800;
1240 else
1241 tty->alt_speed = 0;
1242 }
1243 if (((old_priv.flags & ASYNC_SPD_MASK) !=
1244 (priv->flags & ASYNC_SPD_MASK)) ||
1245 (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
1246 (old_priv.custom_divisor != priv->custom_divisor))) {
1247 unlock_kernel();
1248 change_speed(tty, port);
1249 }
1250 else
1251 unlock_kernel();
1252 return 0;
1253
1254 } /* set_serial_info */
1255
1256
1257 /* Determine type of FTDI chip based on USB config and descriptor. */
1258 static void ftdi_determine_type(struct usb_serial_port *port)
1259 {
1260 struct ftdi_private *priv = usb_get_serial_port_data(port);
1261 struct usb_serial *serial = port->serial;
1262 struct usb_device *udev = serial->dev;
1263 unsigned version;
1264 unsigned interfaces;
1265
1266 /* Assume it is not the original SIO device for now. */
1267 priv->baud_base = 48000000 / 2;
1268 priv->write_offset = 0;
1269
1270 version = le16_to_cpu(udev->descriptor.bcdDevice);
1271 interfaces = udev->actconfig->desc.bNumInterfaces;
1272 dbg("%s: bcdDevice = 0x%x, bNumInterfaces = %u", __func__,
1273 version, interfaces);
1274 if (interfaces > 1) {
1275 int inter;
1276
1277 /* Multiple interfaces.*/
1278 if (version == 0x0800) {
1279 priv->chip_type = FT4232H;
1280 /* Hi-speed - baud clock runs at 120MHz */
1281 priv->baud_base = 120000000 / 2;
1282 } else if (version == 0x0700) {
1283 priv->chip_type = FT2232H;
1284 /* Hi-speed - baud clock runs at 120MHz */
1285 priv->baud_base = 120000000 / 2;
1286 } else
1287 priv->chip_type = FT2232C;
1288
1289 /* Determine interface code. */
1290 inter = serial->interface->altsetting->desc.bInterfaceNumber;
1291 if (inter == 0) {
1292 priv->interface = INTERFACE_A;
1293 } else if (inter == 1) {
1294 priv->interface = INTERFACE_B;
1295 } else if (inter == 2) {
1296 priv->interface = INTERFACE_C;
1297 } else if (inter == 3) {
1298 priv->interface = INTERFACE_D;
1299 }
1300 /* BM-type devices have a bug where bcdDevice gets set
1301 * to 0x200 when iSerialNumber is 0. */
1302 if (version < 0x500) {
1303 dbg("%s: something fishy - bcdDevice too low for multi-interface device",
1304 __func__);
1305 }
1306 } else if (version < 0x200) {
1307 /* Old device. Assume its the original SIO. */
1308 priv->chip_type = SIO;
1309 priv->baud_base = 12000000 / 16;
1310 priv->write_offset = 1;
1311 } else if (version < 0x400) {
1312 /* Assume its an FT8U232AM (or FT8U245AM) */
1313 /* (It might be a BM because of the iSerialNumber bug,
1314 * but it will still work as an AM device.) */
1315 priv->chip_type = FT8U232AM;
1316 } else if (version < 0x600) {
1317 /* Assume its an FT232BM (or FT245BM) */
1318 priv->chip_type = FT232BM;
1319 } else {
1320 /* Assume its an FT232R */
1321 priv->chip_type = FT232RL;
1322 }
1323 dev_info(&udev->dev, "Detected %s\n", ftdi_chip_name[priv->chip_type]);
1324 }
1325
1326
1327 /* Determine the maximum packet size for the device. This depends on the chip
1328 * type and the USB host capabilities. The value should be obtained from the
1329 * device descriptor as the chip will use the appropriate values for the host.*/
1330 static void ftdi_set_max_packet_size(struct usb_serial_port *port)
1331 {
1332 struct ftdi_private *priv = usb_get_serial_port_data(port);
1333 struct usb_serial *serial = port->serial;
1334 struct usb_device *udev = serial->dev;
1335
1336 struct usb_interface *interface = serial->interface;
1337 struct usb_endpoint_descriptor *ep_desc = &interface->cur_altsetting->endpoint[1].desc;
1338
1339 unsigned num_endpoints;
1340 int i = 0;
1341
1342 num_endpoints = interface->cur_altsetting->desc.bNumEndpoints;
1343 dev_info(&udev->dev, "Number of endpoints %d\n", num_endpoints);
1344
1345 /* NOTE: some customers have programmed FT232R/FT245R devices
1346 * with an endpoint size of 0 - not good. In this case, we
1347 * want to override the endpoint descriptor setting and use a
1348 * value of 64 for wMaxPacketSize */
1349 for (i = 0; i < num_endpoints; i++) {
1350 dev_info(&udev->dev, "Endpoint %d MaxPacketSize %d\n", i+1,
1351 interface->cur_altsetting->endpoint[i].desc.wMaxPacketSize);
1352 ep_desc = &interface->cur_altsetting->endpoint[i].desc;
1353 if (ep_desc->wMaxPacketSize == 0) {
1354 ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
1355 dev_info(&udev->dev, "Overriding wMaxPacketSize on endpoint %d\n", i);
1356 }
1357 }
1358
1359 /* set max packet size based on descriptor */
1360 priv->max_packet_size = ep_desc->wMaxPacketSize;
1361
1362 dev_info(&udev->dev, "Setting MaxPacketSize %d\n", priv->max_packet_size);
1363 }
1364
1365
1366 /*
1367 * ***************************************************************************
1368 * Sysfs Attribute
1369 * ***************************************************************************
1370 */
1371
1372 static ssize_t show_latency_timer(struct device *dev,
1373 struct device_attribute *attr, char *buf)
1374 {
1375 struct usb_serial_port *port = to_usb_serial_port(dev);
1376 struct ftdi_private *priv = usb_get_serial_port_data(port);
1377 if (priv->flags & ASYNC_LOW_LATENCY)
1378 return sprintf(buf, "1\n");
1379 else
1380 return sprintf(buf, "%i\n", priv->latency);
1381 }
1382
1383
1384 /* Write a new value of the latency timer, in units of milliseconds. */
1385 static ssize_t store_latency_timer(struct device *dev,
1386 struct device_attribute *attr, const char *valbuf,
1387 size_t count)
1388 {
1389 struct usb_serial_port *port = to_usb_serial_port(dev);
1390 struct ftdi_private *priv = usb_get_serial_port_data(port);
1391 int v = simple_strtoul(valbuf, NULL, 10);
1392 int rv = 0;
1393
1394 priv->latency = v;
1395 rv = write_latency_timer(port);
1396 if (rv < 0)
1397 return -EIO;
1398 return count;
1399 }
1400
1401 /* Write an event character directly to the FTDI register. The ASCII
1402 value is in the low 8 bits, with the enable bit in the 9th bit. */
1403 static ssize_t store_event_char(struct device *dev,
1404 struct device_attribute *attr, const char *valbuf, size_t count)
1405 {
1406 struct usb_serial_port *port = to_usb_serial_port(dev);
1407 struct ftdi_private *priv = usb_get_serial_port_data(port);
1408 struct usb_device *udev = port->serial->dev;
1409 char buf[1];
1410 int v = simple_strtoul(valbuf, NULL, 10);
1411 int rv = 0;
1412
1413 dbg("%s: setting event char = %i", __func__, v);
1414
1415 rv = usb_control_msg(udev,
1416 usb_sndctrlpipe(udev, 0),
1417 FTDI_SIO_SET_EVENT_CHAR_REQUEST,
1418 FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE,
1419 v, priv->interface,
1420 buf, 0, WDR_TIMEOUT);
1421
1422 if (rv < 0) {
1423 dbg("Unable to write event character: %i", rv);
1424 return -EIO;
1425 }
1426
1427 return count;
1428 }
1429
1430 static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer,
1431 store_latency_timer);
1432 static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char);
1433
1434 static int create_sysfs_attrs(struct usb_serial_port *port)
1435 {
1436 struct ftdi_private *priv = usb_get_serial_port_data(port);
1437 int retval = 0;
1438
1439 dbg("%s", __func__);
1440
1441 /* XXX I've no idea if the original SIO supports the event_char
1442 * sysfs parameter, so I'm playing it safe. */
1443 if (priv->chip_type != SIO) {
1444 dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]);
1445 retval = device_create_file(&port->dev, &dev_attr_event_char);
1446 if ((!retval) &&
1447 (priv->chip_type == FT232BM ||
1448 priv->chip_type == FT2232C ||
1449 priv->chip_type == FT232RL ||
1450 priv->chip_type == FT2232H ||
1451 priv->chip_type == FT4232H)) {
1452 retval = device_create_file(&port->dev,
1453 &dev_attr_latency_timer);
1454 }
1455 }
1456 return retval;
1457 }
1458
1459 static void remove_sysfs_attrs(struct usb_serial_port *port)
1460 {
1461 struct ftdi_private *priv = usb_get_serial_port_data(port);
1462
1463 dbg("%s", __func__);
1464
1465 /* XXX see create_sysfs_attrs */
1466 if (priv->chip_type != SIO) {
1467 device_remove_file(&port->dev, &dev_attr_event_char);
1468 if (priv->chip_type == FT232BM ||
1469 priv->chip_type == FT2232C ||
1470 priv->chip_type == FT232RL ||
1471 priv->chip_type == FT2232H ||
1472 priv->chip_type == FT4232H) {
1473 device_remove_file(&port->dev, &dev_attr_latency_timer);
1474 }
1475 }
1476
1477 }
1478
1479 /*
1480 * ***************************************************************************
1481 * FTDI driver specific functions
1482 * ***************************************************************************
1483 */
1484
1485 /* Probe function to check for special devices */
1486 static int ftdi_sio_probe(struct usb_serial *serial,
1487 const struct usb_device_id *id)
1488 {
1489 struct ftdi_sio_quirk *quirk =
1490 (struct ftdi_sio_quirk *)id->driver_info;
1491
1492 if (quirk && quirk->probe) {
1493 int ret = quirk->probe(serial);
1494 if (ret != 0)
1495 return ret;
1496 }
1497
1498 usb_set_serial_data(serial, (void *)id->driver_info);
1499
1500 return 0;
1501 }
1502
1503 static int ftdi_sio_port_probe(struct usb_serial_port *port)
1504 {
1505 struct ftdi_private *priv;
1506 struct ftdi_sio_quirk *quirk = usb_get_serial_data(port->serial);
1507
1508
1509 dbg("%s", __func__);
1510
1511 priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL);
1512 if (!priv) {
1513 dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", __func__,
1514 sizeof(struct ftdi_private));
1515 return -ENOMEM;
1516 }
1517
1518 kref_init(&priv->kref);
1519 spin_lock_init(&priv->tx_lock);
1520 init_waitqueue_head(&priv->delta_msr_wait);
1521 /* This will push the characters through immediately rather
1522 than queue a task to deliver them */
1523 priv->flags = ASYNC_LOW_LATENCY;
1524
1525 if (quirk && quirk->port_probe)
1526 quirk->port_probe(priv);
1527
1528 /* Increase the size of read buffers */
1529 kfree(port->bulk_in_buffer);
1530 port->bulk_in_buffer = kmalloc(BUFSZ, GFP_KERNEL);
1531 if (!port->bulk_in_buffer) {
1532 kfree(priv);
1533 return -ENOMEM;
1534 }
1535 if (port->read_urb) {
1536 port->read_urb->transfer_buffer = port->bulk_in_buffer;
1537 port->read_urb->transfer_buffer_length = BUFSZ;
1538 }
1539
1540 priv->port = port;
1541
1542 /* Free port's existing write urb and transfer buffer. */
1543 if (port->write_urb) {
1544 usb_free_urb(port->write_urb);
1545 port->write_urb = NULL;
1546 }
1547 kfree(port->bulk_out_buffer);
1548 port->bulk_out_buffer = NULL;
1549
1550 usb_set_serial_port_data(port, priv);
1551
1552 ftdi_determine_type(port);
1553 ftdi_set_max_packet_size(port);
1554 read_latency_timer(port);
1555 create_sysfs_attrs(port);
1556 return 0;
1557 }
1558
1559 /* Setup for the USB-UIRT device, which requires hardwired
1560 * baudrate (38400 gets mapped to 312500) */
1561 /* Called from usbserial:serial_probe */
1562 static void ftdi_USB_UIRT_setup(struct ftdi_private *priv)
1563 {
1564 dbg("%s", __func__);
1565
1566 priv->flags |= ASYNC_SPD_CUST;
1567 priv->custom_divisor = 77;
1568 priv->force_baud = 38400;
1569 } /* ftdi_USB_UIRT_setup */
1570
1571 /* Setup for the HE-TIRA1 device, which requires hardwired
1572 * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */
1573
1574 static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv)
1575 {
1576 dbg("%s", __func__);
1577
1578 priv->flags |= ASYNC_SPD_CUST;
1579 priv->custom_divisor = 240;
1580 priv->force_baud = 38400;
1581 priv->force_rtscts = 1;
1582 } /* ftdi_HE_TIRA1_setup */
1583
1584 /*
1585 * Module parameter to control latency timer for NDI FTDI-based USB devices.
1586 * If this value is not set in modprobe.conf.local its value will be set to 1ms.
1587 */
1588 static int ndi_latency_timer = 1;
1589
1590 /* Setup for the NDI FTDI-based USB devices, which requires hardwired
1591 * baudrate (19200 gets mapped to 1200000).
1592 *
1593 * Called from usbserial:serial_probe.
1594 */
1595 static int ftdi_NDI_device_setup(struct usb_serial *serial)
1596 {
1597 struct usb_device *udev = serial->dev;
1598 int latency = ndi_latency_timer;
1599 int rv = 0;
1600 char buf[1];
1601
1602 if (latency == 0)
1603 latency = 1;
1604 if (latency > 99)
1605 latency = 99;
1606
1607 dbg("%s setting NDI device latency to %d", __func__, latency);
1608 dev_info(&udev->dev, "NDI device with a latency value of %d", latency);
1609
1610 rv = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
1611 FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
1612 FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
1613 latency, 0, buf, 0, WDR_TIMEOUT);
1614 return 0;
1615 }
1616
1617 /*
1618 * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko
1619 * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from
1620 * userspace using openocd.
1621 */
1622 static int ftdi_jtag_probe(struct usb_serial *serial)
1623 {
1624 struct usb_device *udev = serial->dev;
1625 struct usb_interface *interface = serial->interface;
1626
1627 dbg("%s", __func__);
1628
1629 if (interface == udev->actconfig->interface[0]) {
1630 dev_info(&udev->dev,
1631 "Ignoring serial port reserved for JTAG\n");
1632 return -ENODEV;
1633 }
1634
1635 return 0;
1636 }
1637
1638 /*
1639 * The Matrix Orbital VK204-25-USB has an invalid IN endpoint.
1640 * We have to correct it if we want to read from it.
1641 */
1642 static int ftdi_mtxorb_hack_setup(struct usb_serial *serial)
1643 {
1644 struct usb_host_endpoint *ep = serial->dev->ep_in[1];
1645 struct usb_endpoint_descriptor *ep_desc = &ep->desc;
1646
1647 if (ep->enabled && ep_desc->wMaxPacketSize == 0) {
1648 ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
1649 dev_info(&serial->dev->dev,
1650 "Fixing invalid wMaxPacketSize on read pipe\n");
1651 }
1652
1653 return 0;
1654 }
1655
1656 static void ftdi_sio_priv_release(struct kref *k)
1657 {
1658 struct ftdi_private *priv = container_of(k, struct ftdi_private, kref);
1659
1660 kfree(priv);
1661 }
1662
1663 static int ftdi_sio_port_remove(struct usb_serial_port *port)
1664 {
1665 struct ftdi_private *priv = usb_get_serial_port_data(port);
1666
1667 dbg("%s", __func__);
1668
1669 remove_sysfs_attrs(port);
1670
1671 kref_put(&priv->kref, ftdi_sio_priv_release);
1672
1673 return 0;
1674 }
1675
1676 static int ftdi_submit_read_urb(struct usb_serial_port *port, gfp_t mem_flags)
1677 {
1678 struct urb *urb = port->read_urb;
1679 struct usb_serial *serial = port->serial;
1680 int result;
1681
1682 usb_fill_bulk_urb(urb, serial->dev,
1683 usb_rcvbulkpipe(serial->dev,
1684 port->bulk_in_endpointAddress),
1685 urb->transfer_buffer,
1686 urb->transfer_buffer_length,
1687 ftdi_read_bulk_callback, port);
1688 result = usb_submit_urb(urb, mem_flags);
1689 if (result)
1690 dev_err(&port->dev,
1691 "%s - failed submitting read urb, error %d\n",
1692 __func__, result);
1693 return result;
1694 }
1695
1696 static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port)
1697 { /* ftdi_open */
1698 struct usb_device *dev = port->serial->dev;
1699 struct ftdi_private *priv = usb_get_serial_port_data(port);
1700 unsigned long flags;
1701
1702 int result = 0;
1703 char buf[1]; /* Needed for the usb_control_msg I think */
1704
1705 dbg("%s", __func__);
1706
1707 spin_lock_irqsave(&priv->tx_lock, flags);
1708 priv->tx_bytes = 0;
1709 spin_unlock_irqrestore(&priv->tx_lock, flags);
1710
1711 write_latency_timer(port);
1712
1713 /* No error checking for this (will get errors later anyway) */
1714 /* See ftdi_sio.h for description of what is reset */
1715 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1716 FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
1717 FTDI_SIO_RESET_SIO,
1718 priv->interface, buf, 0, WDR_TIMEOUT);
1719
1720 /* Termios defaults are set by usb_serial_init. We don't change
1721 port->tty->termios - this would lose speed settings, etc.
1722 This is same behaviour as serial.c/rs_open() - Kuba */
1723
1724 /* ftdi_set_termios will send usb control messages */
1725 if (tty)
1726 ftdi_set_termios(tty, port, tty->termios);
1727
1728 /* Not throttled */
1729 spin_lock_irqsave(&port->lock, flags);
1730 port->throttled = 0;
1731 port->throttle_req = 0;
1732 spin_unlock_irqrestore(&port->lock, flags);
1733
1734 /* Start reading from the device */
1735 result = ftdi_submit_read_urb(port, GFP_KERNEL);
1736 if (!result)
1737 kref_get(&priv->kref);
1738
1739 return result;
1740 } /* ftdi_open */
1741
1742
1743 static void ftdi_dtr_rts(struct usb_serial_port *port, int on)
1744 {
1745 struct ftdi_private *priv = usb_get_serial_port_data(port);
1746 char buf[1];
1747
1748 mutex_lock(&port->serial->disc_mutex);
1749 if (!port->serial->disconnected) {
1750 /* Disable flow control */
1751 if (!on && usb_control_msg(port->serial->dev,
1752 usb_sndctrlpipe(port->serial->dev, 0),
1753 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
1754 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
1755 0, priv->interface, buf, 0,
1756 WDR_TIMEOUT) < 0) {
1757 dev_err(&port->dev, "error from flowcontrol urb\n");
1758 }
1759 /* drop RTS and DTR */
1760 if (on)
1761 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1762 else
1763 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1764 }
1765 mutex_unlock(&port->serial->disc_mutex);
1766 }
1767
1768 /*
1769 * usbserial:__serial_close only calls ftdi_close if the point is open
1770 *
1771 * This only gets called when it is the last close
1772 *
1773 *
1774 */
1775
1776 static void ftdi_close(struct usb_serial_port *port)
1777 { /* ftdi_close */
1778 struct ftdi_private *priv = usb_get_serial_port_data(port);
1779
1780 dbg("%s", __func__);
1781
1782 /* shutdown our bulk read */
1783 usb_kill_urb(port->read_urb);
1784 kref_put(&priv->kref, ftdi_sio_priv_release);
1785 } /* ftdi_close */
1786
1787
1788
1789 /* The SIO requires the first byte to have:
1790 * B0 1
1791 * B1 0
1792 * B2..7 length of message excluding byte 0
1793 *
1794 * The new devices do not require this byte
1795 */
1796 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
1797 const unsigned char *buf, int count)
1798 { /* ftdi_write */
1799 struct ftdi_private *priv = usb_get_serial_port_data(port);
1800 struct urb *urb;
1801 unsigned char *buffer;
1802 int data_offset ; /* will be 1 for the SIO and 0 otherwise */
1803 int status;
1804 int transfer_size;
1805 unsigned long flags;
1806
1807 dbg("%s port %d, %d bytes", __func__, port->number, count);
1808
1809 if (count == 0) {
1810 dbg("write request of 0 bytes");
1811 return 0;
1812 }
1813 spin_lock_irqsave(&priv->tx_lock, flags);
1814 if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) {
1815 spin_unlock_irqrestore(&priv->tx_lock, flags);
1816 dbg("%s - write limit hit\n", __func__);
1817 return 0;
1818 }
1819 priv->tx_outstanding_urbs++;
1820 spin_unlock_irqrestore(&priv->tx_lock, flags);
1821
1822 data_offset = priv->write_offset;
1823 dbg("data_offset set to %d", data_offset);
1824
1825 /* Determine total transfer size */
1826 transfer_size = count;
1827 if (data_offset > 0) {
1828 /* Original sio needs control bytes too... */
1829 transfer_size += (data_offset *
1830 ((count + (priv->max_packet_size - 1 - data_offset)) /
1831 (priv->max_packet_size - data_offset)));
1832 }
1833
1834 buffer = kmalloc(transfer_size, GFP_ATOMIC);
1835 if (!buffer) {
1836 dev_err(&port->dev,
1837 "%s ran out of kernel memory for urb ...\n", __func__);
1838 count = -ENOMEM;
1839 goto error_no_buffer;
1840 }
1841
1842 urb = usb_alloc_urb(0, GFP_ATOMIC);
1843 if (!urb) {
1844 dev_err(&port->dev, "%s - no more free urbs\n", __func__);
1845 count = -ENOMEM;
1846 goto error_no_urb;
1847 }
1848
1849 /* Copy data */
1850 if (data_offset > 0) {
1851 /* Original sio requires control byte at start of
1852 each packet. */
1853 int user_pktsz = priv->max_packet_size - data_offset;
1854 int todo = count;
1855 unsigned char *first_byte = buffer;
1856 const unsigned char *current_position = buf;
1857
1858 while (todo > 0) {
1859 if (user_pktsz > todo)
1860 user_pktsz = todo;
1861 /* Write the control byte at the front of the packet*/
1862 *first_byte = 1 | ((user_pktsz) << 2);
1863 /* Copy data for packet */
1864 memcpy(first_byte + data_offset,
1865 current_position, user_pktsz);
1866 first_byte += user_pktsz + data_offset;
1867 current_position += user_pktsz;
1868 todo -= user_pktsz;
1869 }
1870 } else {
1871 /* No control byte required. */
1872 /* Copy in the data to send */
1873 memcpy(buffer, buf, count);
1874 }
1875
1876 usb_serial_debug_data(debug, &port->dev, __func__,
1877 transfer_size, buffer);
1878
1879 /* fill the buffer and send it */
1880 usb_fill_bulk_urb(urb, port->serial->dev,
1881 usb_sndbulkpipe(port->serial->dev,
1882 port->bulk_out_endpointAddress),
1883 buffer, transfer_size,
1884 ftdi_write_bulk_callback, port);
1885
1886 status = usb_submit_urb(urb, GFP_ATOMIC);
1887 if (status) {
1888 dev_err(&port->dev,
1889 "%s - failed submitting write urb, error %d\n",
1890 __func__, status);
1891 count = status;
1892 goto error;
1893 } else {
1894 spin_lock_irqsave(&priv->tx_lock, flags);
1895 priv->tx_outstanding_bytes += count;
1896 priv->tx_bytes += count;
1897 spin_unlock_irqrestore(&priv->tx_lock, flags);
1898 }
1899
1900 /* we are done with this urb, so let the host driver
1901 * really free it when it is finished with it */
1902 usb_free_urb(urb);
1903
1904 dbg("%s write returning: %d", __func__, count);
1905 return count;
1906 error:
1907 usb_free_urb(urb);
1908 error_no_urb:
1909 kfree(buffer);
1910 error_no_buffer:
1911 spin_lock_irqsave(&priv->tx_lock, flags);
1912 priv->tx_outstanding_urbs--;
1913 spin_unlock_irqrestore(&priv->tx_lock, flags);
1914 return count;
1915 } /* ftdi_write */
1916
1917
1918 /* This function may get called when the device is closed */
1919
1920 static void ftdi_write_bulk_callback(struct urb *urb)
1921 {
1922 unsigned long flags;
1923 struct usb_serial_port *port = urb->context;
1924 struct ftdi_private *priv;
1925 int data_offset; /* will be 1 for the SIO and 0 otherwise */
1926 unsigned long countback;
1927 int status = urb->status;
1928
1929 /* free up the transfer buffer, as usb_free_urb() does not do this */
1930 kfree(urb->transfer_buffer);
1931
1932 dbg("%s - port %d", __func__, port->number);
1933
1934 priv = usb_get_serial_port_data(port);
1935 if (!priv) {
1936 dbg("%s - bad port private data pointer - exiting", __func__);
1937 return;
1938 }
1939 /* account for transferred data */
1940 countback = urb->actual_length;
1941 data_offset = priv->write_offset;
1942 if (data_offset > 0) {
1943 /* Subtract the control bytes */
1944 countback -= (data_offset * DIV_ROUND_UP(countback, priv->max_packet_size));
1945 }
1946 spin_lock_irqsave(&priv->tx_lock, flags);
1947 --priv->tx_outstanding_urbs;
1948 priv->tx_outstanding_bytes -= countback;
1949 spin_unlock_irqrestore(&priv->tx_lock, flags);
1950
1951 if (status) {
1952 dbg("nonzero write bulk status received: %d", status);
1953 return;
1954 }
1955
1956 usb_serial_port_softint(port);
1957 } /* ftdi_write_bulk_callback */
1958
1959
1960 static int ftdi_write_room(struct tty_struct *tty)
1961 {
1962 struct usb_serial_port *port = tty->driver_data;
1963 struct ftdi_private *priv = usb_get_serial_port_data(port);
1964 int room;
1965 unsigned long flags;
1966
1967 dbg("%s - port %d", __func__, port->number);
1968
1969 spin_lock_irqsave(&priv->tx_lock, flags);
1970 if (priv->tx_outstanding_urbs < URB_UPPER_LIMIT) {
1971 /*
1972 * We really can take anything the user throws at us
1973 * but let's pick a nice big number to tell the tty
1974 * layer that we have lots of free space
1975 */
1976 room = 2048;
1977 } else {
1978 room = 0;
1979 }
1980 spin_unlock_irqrestore(&priv->tx_lock, flags);
1981 return room;
1982 }
1983
1984 static int ftdi_chars_in_buffer(struct tty_struct *tty)
1985 {
1986 struct usb_serial_port *port = tty->driver_data;
1987 struct ftdi_private *priv = usb_get_serial_port_data(port);
1988 int buffered;
1989 unsigned long flags;
1990
1991 dbg("%s - port %d", __func__, port->number);
1992
1993 spin_lock_irqsave(&priv->tx_lock, flags);
1994 buffered = (int)priv->tx_outstanding_bytes;
1995 spin_unlock_irqrestore(&priv->tx_lock, flags);
1996 if (buffered < 0) {
1997 dev_err(&port->dev, "%s outstanding tx bytes is negative!\n",
1998 __func__);
1999 buffered = 0;
2000 }
2001 return buffered;
2002 }
2003
2004 static int ftdi_process_packet(struct tty_struct *tty,
2005 struct usb_serial_port *port, struct ftdi_private *priv,
2006 char *packet, int len)
2007 {
2008 int i;
2009 char status;
2010 char flag;
2011 char *ch;
2012
2013 dbg("%s - port %d", __func__, port->number);
2014
2015 if (len < 2) {
2016 dbg("malformed packet");
2017 return 0;
2018 }
2019
2020 /* Compare new line status to the old one, signal if different/
2021 N.B. packet may be processed more than once, but differences
2022 are only processed once. */
2023 status = packet[0] & FTDI_STATUS_B0_MASK;
2024 if (status != priv->prev_status) {
2025 priv->diff_status |= status ^ priv->prev_status;
2026 wake_up_interruptible(&priv->delta_msr_wait);
2027 priv->prev_status = status;
2028 }
2029
2030 /*
2031 * Although the device uses a bitmask and hence can have multiple
2032 * errors on a packet - the order here sets the priority the error is
2033 * returned to the tty layer.
2034 */
2035 flag = TTY_NORMAL;
2036 if (packet[1] & FTDI_RS_OE) {
2037 flag = TTY_OVERRUN;
2038 dbg("OVERRRUN error");
2039 }
2040 if (packet[1] & FTDI_RS_BI) {
2041 flag = TTY_BREAK;
2042 dbg("BREAK received");
2043 usb_serial_handle_break(port);
2044 }
2045 if (packet[1] & FTDI_RS_PE) {
2046 flag = TTY_PARITY;
2047 dbg("PARITY error");
2048 }
2049 if (packet[1] & FTDI_RS_FE) {
2050 flag = TTY_FRAME;
2051 dbg("FRAMING error");
2052 }
2053
2054 len -= 2;
2055 if (!len)
2056 return 0; /* status only */
2057 ch = packet + 2;
2058
2059 if (!(port->console && port->sysrq) && flag == TTY_NORMAL)
2060 tty_insert_flip_string(tty, ch, len);
2061 else {
2062 for (i = 0; i < len; i++, ch++) {
2063 if (!usb_serial_handle_sysrq_char(tty, port, *ch))
2064 tty_insert_flip_char(tty, *ch, flag);
2065 }
2066 }
2067 return len;
2068 }
2069
2070 static void ftdi_process_read(struct usb_serial_port *port)
2071 {
2072 struct urb *urb = port->read_urb;
2073 struct tty_struct *tty;
2074 struct ftdi_private *priv = usb_get_serial_port_data(port);
2075 char *data = (char *)urb->transfer_buffer;
2076 int i;
2077 int len;
2078 int count = 0;
2079
2080 tty = tty_port_tty_get(&port->port);
2081 if (!tty)
2082 return;
2083
2084 for (i = 0; i < urb->actual_length; i += priv->max_packet_size) {
2085 len = min_t(int, urb->actual_length - i, priv->max_packet_size);
2086 count += ftdi_process_packet(tty, port, priv, &data[i], len);
2087 }
2088
2089 if (count)
2090 tty_flip_buffer_push(tty);
2091 tty_kref_put(tty);
2092 }
2093
2094 static void ftdi_read_bulk_callback(struct urb *urb)
2095 {
2096 struct usb_serial_port *port = urb->context;
2097 unsigned long flags;
2098
2099 dbg("%s - port %d", __func__, port->number);
2100
2101 if (urb->status) {
2102 dbg("%s - nonzero read bulk status received: %d",
2103 __func__, urb->status);
2104 return;
2105 }
2106
2107 usb_serial_debug_data(debug, &port->dev, __func__,
2108 urb->actual_length, urb->transfer_buffer);
2109 ftdi_process_read(port);
2110
2111 spin_lock_irqsave(&port->lock, flags);
2112 port->throttled = port->throttle_req;
2113 if (!port->throttled) {
2114 spin_unlock_irqrestore(&port->lock, flags);
2115 ftdi_submit_read_urb(port, GFP_ATOMIC);
2116 } else
2117 spin_unlock_irqrestore(&port->lock, flags);
2118 }
2119
2120 static void ftdi_break_ctl(struct tty_struct *tty, int break_state)
2121 {
2122 struct usb_serial_port *port = tty->driver_data;
2123 struct ftdi_private *priv = usb_get_serial_port_data(port);
2124 __u16 urb_value = 0;
2125 char buf[1];
2126
2127 /* break_state = -1 to turn on break, and 0 to turn off break */
2128 /* see drivers/char/tty_io.c to see it used */
2129 /* last_set_data_urb_value NEVER has the break bit set in it */
2130
2131 if (break_state)
2132 urb_value = priv->last_set_data_urb_value | FTDI_SIO_SET_BREAK;
2133 else
2134 urb_value = priv->last_set_data_urb_value;
2135
2136 if (usb_control_msg(port->serial->dev,
2137 usb_sndctrlpipe(port->serial->dev, 0),
2138 FTDI_SIO_SET_DATA_REQUEST,
2139 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2140 urb_value , priv->interface,
2141 buf, 0, WDR_TIMEOUT) < 0) {
2142 dev_err(&port->dev, "%s FAILED to enable/disable break state "
2143 "(state was %d)\n", __func__, break_state);
2144 }
2145
2146 dbg("%s break state is %d - urb is %d", __func__,
2147 break_state, urb_value);
2148
2149 }
2150
2151
2152 /* old_termios contains the original termios settings and tty->termios contains
2153 * the new setting to be used
2154 * WARNING: set_termios calls this with old_termios in kernel space
2155 */
2156
2157 static void ftdi_set_termios(struct tty_struct *tty,
2158 struct usb_serial_port *port, struct ktermios *old_termios)
2159 { /* ftdi_termios */
2160 struct usb_device *dev = port->serial->dev;
2161 struct ftdi_private *priv = usb_get_serial_port_data(port);
2162 struct ktermios *termios = tty->termios;
2163 unsigned int cflag = termios->c_cflag;
2164 __u16 urb_value; /* will hold the new flags */
2165 char buf[1]; /* Perhaps I should dynamically alloc this? */
2166
2167 /* Added for xon/xoff support */
2168 unsigned int iflag = termios->c_iflag;
2169 unsigned char vstop;
2170 unsigned char vstart;
2171
2172 dbg("%s", __func__);
2173
2174 /* Force baud rate if this device requires it, unless it is set to
2175 B0. */
2176 if (priv->force_baud && ((termios->c_cflag & CBAUD) != B0)) {
2177 dbg("%s: forcing baud rate for this device", __func__);
2178 tty_encode_baud_rate(tty, priv->force_baud,
2179 priv->force_baud);
2180 }
2181
2182 /* Force RTS-CTS if this device requires it. */
2183 if (priv->force_rtscts) {
2184 dbg("%s: forcing rtscts for this device", __func__);
2185 termios->c_cflag |= CRTSCTS;
2186 }
2187
2188 cflag = termios->c_cflag;
2189
2190 /* FIXME -For this cut I don't care if the line is really changing or
2191 not - so just do the change regardless - should be able to
2192 compare old_termios and tty->termios */
2193 /* NOTE These routines can get interrupted by
2194 ftdi_sio_read_bulk_callback - need to examine what this means -
2195 don't see any problems yet */
2196
2197 /* Set number of data bits, parity, stop bits */
2198
2199 termios->c_cflag &= ~CMSPAR;
2200
2201 urb_value = 0;
2202 urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 :
2203 FTDI_SIO_SET_DATA_STOP_BITS_1);
2204 urb_value |= (cflag & PARENB ?
2205 (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD :
2206 FTDI_SIO_SET_DATA_PARITY_EVEN) :
2207 FTDI_SIO_SET_DATA_PARITY_NONE);
2208 if (cflag & CSIZE) {
2209 switch (cflag & CSIZE) {
2210 case CS5: urb_value |= 5; dbg("Setting CS5"); break;
2211 case CS6: urb_value |= 6; dbg("Setting CS6"); break;
2212 case CS7: urb_value |= 7; dbg("Setting CS7"); break;
2213 case CS8: urb_value |= 8; dbg("Setting CS8"); break;
2214 default:
2215 dev_err(&port->dev, "CSIZE was set but not CS5-CS8\n");
2216 }
2217 }
2218
2219 /* This is needed by the break command since it uses the same command
2220 - but is or'ed with this value */
2221 priv->last_set_data_urb_value = urb_value;
2222
2223 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2224 FTDI_SIO_SET_DATA_REQUEST,
2225 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2226 urb_value , priv->interface,
2227 buf, 0, WDR_SHORT_TIMEOUT) < 0) {
2228 dev_err(&port->dev, "%s FAILED to set "
2229 "databits/stopbits/parity\n", __func__);
2230 }
2231
2232 /* Now do the baudrate */
2233 if ((cflag & CBAUD) == B0) {
2234 /* Disable flow control */
2235 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2236 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2237 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2238 0, priv->interface,
2239 buf, 0, WDR_TIMEOUT) < 0) {
2240 dev_err(&port->dev,
2241 "%s error from disable flowcontrol urb\n",
2242 __func__);
2243 }
2244 /* Drop RTS and DTR */
2245 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2246 } else {
2247 /* set the baudrate determined before */
2248 if (change_speed(tty, port))
2249 dev_err(&port->dev, "%s urb failed to set baudrate\n",
2250 __func__);
2251 /* Ensure RTS and DTR are raised when baudrate changed from 0 */
2252 if (!old_termios || (old_termios->c_cflag & CBAUD) == B0)
2253 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2254 }
2255
2256 /* Set flow control */
2257 /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */
2258 if (cflag & CRTSCTS) {
2259 dbg("%s Setting to CRTSCTS flow control", __func__);
2260 if (usb_control_msg(dev,
2261 usb_sndctrlpipe(dev, 0),
2262 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2263 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2264 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface),
2265 buf, 0, WDR_TIMEOUT) < 0) {
2266 dev_err(&port->dev,
2267 "urb failed to set to rts/cts flow control\n");
2268 }
2269
2270 } else {
2271 /*
2272 * Xon/Xoff code
2273 *
2274 * Check the IXOFF status in the iflag component of the
2275 * termios structure. If IXOFF is not set, the pre-xon/xoff
2276 * code is executed.
2277 */
2278 if (iflag & IXOFF) {
2279 dbg("%s request to enable xonxoff iflag=%04x",
2280 __func__, iflag);
2281 /* Try to enable the XON/XOFF on the ftdi_sio
2282 * Set the vstart and vstop -- could have been done up
2283 * above where a lot of other dereferencing is done but
2284 * that would be very inefficient as vstart and vstop
2285 * are not always needed.
2286 */
2287 vstart = termios->c_cc[VSTART];
2288 vstop = termios->c_cc[VSTOP];
2289 urb_value = (vstop << 8) | (vstart);
2290
2291 if (usb_control_msg(dev,
2292 usb_sndctrlpipe(dev, 0),
2293 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2294 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2295 urb_value , (FTDI_SIO_XON_XOFF_HS
2296 | priv->interface),
2297 buf, 0, WDR_TIMEOUT) < 0) {
2298 dev_err(&port->dev, "urb failed to set to "
2299 "xon/xoff flow control\n");
2300 }
2301 } else {
2302 /* else clause to only run if cflag ! CRTSCTS and iflag
2303 * ! XOFF. CHECKME Assuming XON/XOFF handled by tty
2304 * stack - not by device */
2305 dbg("%s Turning off hardware flow control", __func__);
2306 if (usb_control_msg(dev,
2307 usb_sndctrlpipe(dev, 0),
2308 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2309 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2310 0, priv->interface,
2311 buf, 0, WDR_TIMEOUT) < 0) {
2312 dev_err(&port->dev,
2313 "urb failed to clear flow control\n");
2314 }
2315 }
2316
2317 }
2318 return;
2319 }
2320
2321 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
2322 {
2323 struct usb_serial_port *port = tty->driver_data;
2324 struct ftdi_private *priv = usb_get_serial_port_data(port);
2325 unsigned char buf[2];
2326 int ret;
2327
2328 dbg("%s TIOCMGET", __func__);
2329 switch (priv->chip_type) {
2330 case SIO:
2331 /* Request the status from the device */
2332 ret = usb_control_msg(port->serial->dev,
2333 usb_rcvctrlpipe(port->serial->dev, 0),
2334 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2335 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2336 0, 0,
2337 buf, 1, WDR_TIMEOUT);
2338 if (ret < 0)
2339 return ret;
2340 break;
2341 case FT8U232AM:
2342 case FT232BM:
2343 case FT2232C:
2344 case FT232RL:
2345 case FT2232H:
2346 case FT4232H:
2347 /* the 8U232AM returns a two byte value (the sio is a 1 byte
2348 value) - in the same format as the data returned from the in
2349 point */
2350 ret = usb_control_msg(port->serial->dev,
2351 usb_rcvctrlpipe(port->serial->dev, 0),
2352 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2353 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2354 0, priv->interface,
2355 buf, 2, WDR_TIMEOUT);
2356 if (ret < 0)
2357 return ret;
2358 break;
2359 default:
2360 return -EFAULT;
2361 }
2362
2363 return (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
2364 (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) |
2365 (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) |
2366 (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0) |
2367 priv->last_dtr_rts;
2368 }
2369
2370 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
2371 unsigned int set, unsigned int clear)
2372 {
2373 struct usb_serial_port *port = tty->driver_data;
2374 dbg("%s TIOCMSET", __func__);
2375 return update_mctrl(port, set, clear);
2376 }
2377
2378
2379 static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
2380 unsigned int cmd, unsigned long arg)
2381 {
2382 struct usb_serial_port *port = tty->driver_data;
2383 struct ftdi_private *priv = usb_get_serial_port_data(port);
2384
2385 dbg("%s cmd 0x%04x", __func__, cmd);
2386
2387 /* Based on code from acm.c and others */
2388 switch (cmd) {
2389
2390 case TIOCGSERIAL: /* gets serial port data */
2391 return get_serial_info(port,
2392 (struct serial_struct __user *) arg);
2393
2394 case TIOCSSERIAL: /* sets serial port data */
2395 return set_serial_info(tty, port,
2396 (struct serial_struct __user *) arg);
2397
2398 /*
2399 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
2400 * - mask passed in arg for lines of interest
2401 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
2402 * Caller should use TIOCGICOUNT to see which one it was.
2403 *
2404 * This code is borrowed from linux/drivers/char/serial.c
2405 */
2406 case TIOCMIWAIT:
2407 while (priv != NULL) {
2408 interruptible_sleep_on(&priv->delta_msr_wait);
2409 /* see if a signal did it */
2410 if (signal_pending(current))
2411 return -ERESTARTSYS;
2412 else {
2413 char diff = priv->diff_status;
2414
2415 if (diff == 0)
2416 return -EIO; /* no change => error */
2417
2418 /* Consume all events */
2419 priv->diff_status = 0;
2420
2421 /* Return 0 if caller wanted to know about
2422 these bits */
2423 if (((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) ||
2424 ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) ||
2425 ((arg & TIOCM_CD) && (diff & FTDI_RS0_RLSD)) ||
2426 ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS))) {
2427 return 0;
2428 }
2429 /*
2430 * Otherwise caller can't care less about what
2431 * happened,and so we continue to wait for more
2432 * events.
2433 */
2434 }
2435 }
2436 return 0;
2437 default:
2438 break;
2439 }
2440 /* This is not necessarily an error - turns out the higher layers
2441 * will do some ioctls themselves (see comment above)
2442 */
2443 dbg("%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h", __func__, cmd);
2444 return -ENOIOCTLCMD;
2445 }
2446
2447 static void ftdi_throttle(struct tty_struct *tty)
2448 {
2449 struct usb_serial_port *port = tty->driver_data;
2450 unsigned long flags;
2451
2452 dbg("%s - port %d", __func__, port->number);
2453
2454 spin_lock_irqsave(&port->lock, flags);
2455 port->throttle_req = 1;
2456 spin_unlock_irqrestore(&port->lock, flags);
2457 }
2458
2459 void ftdi_unthrottle(struct tty_struct *tty)
2460 {
2461 struct usb_serial_port *port = tty->driver_data;
2462 int was_throttled;
2463 unsigned long flags;
2464
2465 dbg("%s - port %d", __func__, port->number);
2466
2467 spin_lock_irqsave(&port->lock, flags);
2468 was_throttled = port->throttled;
2469 port->throttled = port->throttle_req = 0;
2470 spin_unlock_irqrestore(&port->lock, flags);
2471
2472 /* Resubmit urb if throttled and open. */
2473 if (was_throttled && test_bit(ASYNCB_INITIALIZED, &port->port.flags))
2474 ftdi_submit_read_urb(port, GFP_KERNEL);
2475 }
2476
2477 static int __init ftdi_init(void)
2478 {
2479 int retval;
2480
2481 dbg("%s", __func__);
2482 if (vendor > 0 && product > 0) {
2483 /* Add user specified VID/PID to reserved element of table. */
2484 int i;
2485 for (i = 0; id_table_combined[i].idVendor; i++)
2486 ;
2487 id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
2488 id_table_combined[i].idVendor = vendor;
2489 id_table_combined[i].idProduct = product;
2490 }
2491 retval = usb_serial_register(&ftdi_sio_device);
2492 if (retval)
2493 goto failed_sio_register;
2494 retval = usb_register(&ftdi_driver);
2495 if (retval)
2496 goto failed_usb_register;
2497
2498 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
2499 DRIVER_DESC "\n");
2500 return 0;
2501 failed_usb_register:
2502 usb_serial_deregister(&ftdi_sio_device);
2503 failed_sio_register:
2504 return retval;
2505 }
2506
2507
2508 static void __exit ftdi_exit(void)
2509 {
2510
2511 dbg("%s", __func__);
2512
2513 usb_deregister(&ftdi_driver);
2514 usb_serial_deregister(&ftdi_sio_device);
2515
2516 }
2517
2518
2519 module_init(ftdi_init);
2520 module_exit(ftdi_exit);
2521
2522 MODULE_AUTHOR(DRIVER_AUTHOR);
2523 MODULE_DESCRIPTION(DRIVER_DESC);
2524 MODULE_LICENSE("GPL");
2525
2526 module_param(debug, bool, S_IRUGO | S_IWUSR);
2527 MODULE_PARM_DESC(debug, "Debug enabled or not");
2528 module_param(vendor, ushort, 0);
2529 MODULE_PARM_DESC(vendor, "User specified vendor ID (default="
2530 __MODULE_STRING(FTDI_VID)")");
2531 module_param(product, ushort, 0);
2532 MODULE_PARM_DESC(product, "User specified product ID");
2533
2534 module_param(ndi_latency_timer, int, S_IRUGO | S_IWUSR);
2535 MODULE_PARM_DESC(ndi_latency_timer, "NDI device latency timer override");
Support for the Chinese Samsung S3C2440 based development boards