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Merge branch 'linus' into x86/pat2
[deliverable/linux.git] / drivers / usb / serial / ftdi_sio.c
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/tty.h>
37 #include <linux/tty_driver.h>
38 #include <linux/tty_flip.h>
39 #include <linux/module.h>
40 #include <linux/spinlock.h>
41 #include <linux/uaccess.h>
42 #include <linux/usb.h>
43 #include <linux/serial.h>
44 #include <linux/usb/serial.h>
45 #include "ftdi_sio.h"
46
47 /*
48 * Version Information
49 */
50 #define DRIVER_VERSION "v1.4.3"
51 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober <kuba@mareimbrium.org>"
52 #define DRIVER_DESC "USB FTDI Serial Converters Driver"
53
54 static int debug;
55 static __u16 vendor = FTDI_VID;
56 static __u16 product;
57
58 struct ftdi_private {
59 ftdi_chip_type_t chip_type;
60 /* type of device, either SIO or FT8U232AM */
61 int baud_base; /* baud base clock for divisor setting */
62 int custom_divisor; /* custom_divisor kludge, this is for
63 baud_base (different from what goes to the
64 chip!) */
65 __u16 last_set_data_urb_value ;
66 /* the last data state set - needed for doing
67 * a break
68 */
69 int write_offset; /* This is the offset in the usb data block to
70 * write the serial data - it varies between
71 * devices
72 */
73 int flags; /* some ASYNC_xxxx flags are supported */
74 unsigned long last_dtr_rts; /* saved modem control outputs */
75 wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
76 char prev_status, diff_status; /* Used for TIOCMIWAIT */
77 __u8 rx_flags; /* receive state flags (throttling) */
78 spinlock_t rx_lock; /* spinlock for receive state */
79 struct delayed_work rx_work;
80 struct usb_serial_port *port;
81 int rx_processed;
82 unsigned long rx_bytes;
83
84 __u16 interface; /* FT2232C port interface (0 for FT232/245) */
85
86 speed_t force_baud; /* if non-zero, force the baud rate to
87 this value */
88 int force_rtscts; /* if non-zero, force RTS-CTS to always
89 be enabled */
90
91 spinlock_t tx_lock; /* spinlock for transmit state */
92 unsigned long tx_bytes;
93 unsigned long tx_outstanding_bytes;
94 unsigned long tx_outstanding_urbs;
95 };
96
97 /* struct ftdi_sio_quirk is used by devices requiring special attention. */
98 struct ftdi_sio_quirk {
99 int (*probe)(struct usb_serial *);
100 /* Special settings for probed ports. */
101 void (*port_probe)(struct ftdi_private *);
102 };
103
104 static int ftdi_jtag_probe(struct usb_serial *serial);
105 static int ftdi_mtxorb_hack_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_USB_UIRT_quirk = {
118 .port_probe = ftdi_USB_UIRT_setup,
119 };
120
121 static struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = {
122 .port_probe = ftdi_HE_TIRA1_setup,
123 };
124
125 /*
126 * The 8U232AM has the same API as the sio except for:
127 * - it can support MUCH higher baudrates; up to:
128 * o 921600 for RS232 and 2000000 for RS422/485 at 48MHz
129 * o 230400 at 12MHz
130 * so .. 8U232AM's baudrate setting codes are different
131 * - it has a two byte status code.
132 * - it returns characters every 16ms (the FTDI does it every 40ms)
133 *
134 * the bcdDevice value is used to differentiate FT232BM and FT245BM from
135 * the earlier FT8U232AM and FT8U232BM. For now, include all known VID/PID
136 * combinations in both tables.
137 * FIXME: perhaps bcdDevice can also identify 12MHz FT8U232AM devices,
138 * but I don't know if those ever went into mass production. [Ian Abbott]
139 */
140
141
142
143 static struct usb_device_id id_table_combined [] = {
144 { USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) },
145 { USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) },
146 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_0_PID) },
147 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_1_PID) },
148 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_2_PID) },
149 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_3_PID) },
150 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_4_PID) },
151 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_5_PID) },
152 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_6_PID) },
153 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_7_PID) },
154 { USB_DEVICE(FTDI_VID, FTDI_ACTZWAVE_PID) },
155 { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) },
156 { USB_DEVICE(FTDI_VID, FTDI_IPLUS_PID) },
157 { USB_DEVICE(FTDI_VID, FTDI_IPLUS2_PID) },
158 { USB_DEVICE(FTDI_VID, FTDI_DMX4ALL) },
159 { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) },
160 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) },
161 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) },
162 { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) },
163 { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) },
164 { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) },
165 { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) },
166 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) },
167 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) },
168 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) },
169 { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) },
170 { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) },
171 { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) },
172 { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) },
173 { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) },
174 { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) },
175 { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) },
176 { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) },
177 { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) },
178 { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) },
179 { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) },
180 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) },
181 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) },
182 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) },
183 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) },
184 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) },
185 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) },
186 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) },
187 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0100_PID) },
188 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0101_PID) },
189 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0102_PID) },
190 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0103_PID) },
191 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0104_PID) },
192 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0105_PID) },
193 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0106_PID) },
194 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0107_PID) },
195 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0108_PID) },
196 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0109_PID) },
197 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010A_PID) },
198 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010B_PID) },
199 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010C_PID) },
200 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010D_PID) },
201 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010E_PID) },
202 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010F_PID) },
203 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0110_PID) },
204 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0111_PID) },
205 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0112_PID) },
206 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0113_PID) },
207 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0114_PID) },
208 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0115_PID) },
209 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0116_PID) },
210 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0117_PID) },
211 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0118_PID) },
212 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0119_PID) },
213 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011A_PID) },
214 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011B_PID) },
215 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011C_PID) },
216 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011D_PID) },
217 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011E_PID) },
218 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011F_PID) },
219 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0120_PID) },
220 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0121_PID) },
221 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0122_PID) },
222 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0123_PID) },
223 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0124_PID) },
224 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0125_PID) },
225 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0126_PID) },
226 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0127_PID),
227 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
228 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0128_PID) },
229 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0129_PID) },
230 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012A_PID) },
231 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012B_PID) },
232 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012C_PID),
233 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
234 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012D_PID) },
235 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012E_PID) },
236 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012F_PID) },
237 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0130_PID) },
238 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0131_PID) },
239 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0132_PID) },
240 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0133_PID) },
241 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0134_PID) },
242 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0135_PID) },
243 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0136_PID) },
244 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0137_PID) },
245 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0138_PID) },
246 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0139_PID) },
247 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013A_PID) },
248 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013B_PID) },
249 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013C_PID) },
250 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013D_PID) },
251 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013E_PID) },
252 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013F_PID) },
253 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0140_PID) },
254 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0141_PID) },
255 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0142_PID) },
256 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0143_PID) },
257 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0144_PID) },
258 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0145_PID) },
259 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0146_PID) },
260 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0147_PID) },
261 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0148_PID) },
262 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0149_PID) },
263 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014A_PID) },
264 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014B_PID) },
265 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014C_PID) },
266 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014D_PID) },
267 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014E_PID) },
268 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014F_PID) },
269 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0150_PID) },
270 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0151_PID) },
271 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0152_PID) },
272 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0153_PID),
273 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
274 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0154_PID),
275 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
276 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0155_PID),
277 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
278 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0156_PID),
279 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
280 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0157_PID),
281 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
282 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0158_PID),
283 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
284 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0159_PID) },
285 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015A_PID) },
286 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015B_PID) },
287 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015C_PID) },
288 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015D_PID) },
289 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015E_PID) },
290 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015F_PID) },
291 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0160_PID) },
292 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0161_PID) },
293 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0162_PID) },
294 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0163_PID) },
295 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0164_PID) },
296 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0165_PID) },
297 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0166_PID) },
298 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0167_PID) },
299 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0168_PID) },
300 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0169_PID) },
301 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016A_PID) },
302 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016B_PID) },
303 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016C_PID) },
304 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016D_PID) },
305 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016E_PID) },
306 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016F_PID) },
307 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0170_PID) },
308 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0171_PID) },
309 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0172_PID) },
310 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0173_PID) },
311 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0174_PID) },
312 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0175_PID) },
313 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0176_PID) },
314 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0177_PID) },
315 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0178_PID) },
316 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0179_PID) },
317 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017A_PID) },
318 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017B_PID) },
319 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017C_PID) },
320 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017D_PID) },
321 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017E_PID) },
322 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017F_PID) },
323 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0180_PID) },
324 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0181_PID) },
325 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0182_PID) },
326 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0183_PID) },
327 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0184_PID) },
328 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0185_PID) },
329 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0186_PID) },
330 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0187_PID) },
331 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0188_PID) },
332 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0189_PID) },
333 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018A_PID) },
334 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018B_PID) },
335 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018C_PID) },
336 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018D_PID) },
337 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018E_PID) },
338 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018F_PID) },
339 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0190_PID) },
340 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0191_PID) },
341 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0192_PID) },
342 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0193_PID) },
343 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0194_PID) },
344 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0195_PID) },
345 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0196_PID) },
346 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0197_PID) },
347 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0198_PID) },
348 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0199_PID) },
349 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019A_PID) },
350 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019B_PID) },
351 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019C_PID) },
352 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019D_PID) },
353 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019E_PID) },
354 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019F_PID) },
355 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A0_PID) },
356 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A1_PID) },
357 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A2_PID) },
358 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A3_PID) },
359 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A4_PID) },
360 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A5_PID) },
361 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A6_PID) },
362 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A7_PID) },
363 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A8_PID) },
364 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A9_PID) },
365 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AA_PID) },
366 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AB_PID) },
367 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AC_PID) },
368 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AD_PID) },
369 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AE_PID) },
370 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AF_PID) },
371 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B0_PID) },
372 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B1_PID) },
373 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B2_PID) },
374 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B3_PID) },
375 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B4_PID) },
376 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B5_PID) },
377 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B6_PID) },
378 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B7_PID) },
379 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B8_PID) },
380 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B9_PID) },
381 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BA_PID) },
382 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BB_PID) },
383 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BC_PID) },
384 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BD_PID) },
385 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BE_PID) },
386 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BF_PID) },
387 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C0_PID) },
388 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C1_PID) },
389 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C2_PID) },
390 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C3_PID) },
391 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C4_PID) },
392 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C5_PID) },
393 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C6_PID) },
394 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C7_PID) },
395 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C8_PID) },
396 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C9_PID) },
397 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CA_PID) },
398 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CB_PID) },
399 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CC_PID) },
400 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CD_PID) },
401 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CE_PID) },
402 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CF_PID) },
403 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D0_PID) },
404 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D1_PID) },
405 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D2_PID) },
406 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D3_PID) },
407 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D4_PID) },
408 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D5_PID) },
409 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D6_PID) },
410 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D7_PID) },
411 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D8_PID) },
412 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D9_PID) },
413 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DA_PID) },
414 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DB_PID) },
415 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DC_PID) },
416 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DD_PID) },
417 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DE_PID) },
418 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DF_PID) },
419 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E0_PID) },
420 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E1_PID) },
421 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E2_PID) },
422 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E3_PID) },
423 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E4_PID) },
424 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E5_PID) },
425 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E6_PID) },
426 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E7_PID) },
427 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E8_PID) },
428 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E9_PID) },
429 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EA_PID) },
430 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EB_PID) },
431 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EC_PID) },
432 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01ED_PID) },
433 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EE_PID) },
434 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EF_PID) },
435 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F0_PID) },
436 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F1_PID) },
437 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F2_PID) },
438 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F3_PID) },
439 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F4_PID) },
440 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F5_PID) },
441 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F6_PID) },
442 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F7_PID) },
443 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F8_PID) },
444 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F9_PID) },
445 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FA_PID) },
446 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FB_PID) },
447 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FC_PID) },
448 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FD_PID) },
449 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FE_PID) },
450 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FF_PID) },
451 { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) },
452 { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) },
453 { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) },
454 { USB_DEVICE(FTDI_VID, FTDI_USBX_707_PID) },
455 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) },
456 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) },
457 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) },
458 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) },
459 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2106_PID) },
460 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) },
461 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) },
462 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) },
463 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) },
464 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) },
465 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) },
466 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) },
467 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) },
468 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) },
469 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) },
470 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) },
471 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) },
472 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) },
473 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) },
474 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) },
475 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) },
476 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) },
477 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) },
478 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) },
479 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) },
480 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) },
481 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) },
482 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) },
483 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) },
484 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) },
485 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) },
486 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) },
487 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) },
488 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) },
489 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) },
490 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) },
491 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) },
492 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) },
493 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) },
494 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) },
495 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) },
496 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) },
497 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) },
498 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) },
499 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) },
500 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) },
501 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) },
502 { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) },
503 { USB_DEVICE(OCT_VID, OCT_US101_PID) },
504 { USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID),
505 .driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk },
506 { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID),
507 .driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk },
508 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) },
509 { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) },
510 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) },
511 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) },
512 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) },
513 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) },
514 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) },
515 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) },
516 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) },
517 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) },
518 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) },
519 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) },
520 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) },
521 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) },
522 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) },
523 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) },
524 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) },
525 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) },
526 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) },
527 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) },
528 { USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) },
529 { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) },
530 { USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) },
531 { USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) },
532 { USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) },
533 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) },
534 { USB_DEVICE(FTDI_VID, FTDI_IBS_US485_PID) },
535 { USB_DEVICE(FTDI_VID, FTDI_IBS_PICPRO_PID) },
536 { USB_DEVICE(FTDI_VID, FTDI_IBS_PCMCIA_PID) },
537 { USB_DEVICE(FTDI_VID, FTDI_IBS_PK1_PID) },
538 { USB_DEVICE(FTDI_VID, FTDI_IBS_RS232MON_PID) },
539 { USB_DEVICE(FTDI_VID, FTDI_IBS_APP70_PID) },
540 { USB_DEVICE(FTDI_VID, FTDI_IBS_PEDO_PID) },
541 { USB_DEVICE(FTDI_VID, FTDI_IBS_PROD_PID) },
542 /*
543 * Due to many user requests for multiple ELV devices we enable
544 * them by default.
545 */
546 { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) },
547 { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) },
548 { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) },
549 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) },
550 { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) },
551 { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) },
552 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) },
553 { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) },
554 { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) },
555 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) },
556 { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) },
557 { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) },
558 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) },
559 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) },
560 { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) },
561 { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) },
562 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) },
563 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) },
564 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1010PC_PID) },
565 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) },
566 { USB_DEVICE(FTDI_VID, FTDI_ELV_HS485_PID) },
567 { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) },
568 { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) },
569 { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) },
570 { USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) },
571 { USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) },
572 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) },
573 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) },
574 { USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) },
575 { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) },
576 { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) },
577 { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) },
578 { USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) },
579 { USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) },
580 { USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) },
581 { USB_DEVICE(TTI_VID, TTI_QL355P_PID) },
582 { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) },
583 { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) },
584 { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) },
585 { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) },
586 { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) },
587 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) },
588 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) },
589 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) },
590 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) },
591 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) },
592 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) },
593 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) },
594 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) },
595 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) },
596 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) },
597 { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
598 { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) },
599 { USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) },
600 { USB_DEVICE(FTDI_VID, FTDI_MHAM_YS_PID) },
601 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) },
602 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) },
603 { USB_DEVICE(FTDI_VID, FTDI_MHAM_IC_PID) },
604 { USB_DEVICE(FTDI_VID, FTDI_MHAM_DB9_PID) },
605 { USB_DEVICE(FTDI_VID, FTDI_MHAM_RS232_PID) },
606 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y9_PID) },
607 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) },
608 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) },
609 { USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) },
610 { USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) },
611 { USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) },
612 { USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) },
613 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) },
614 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) },
615 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) },
616 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HRC_PID) },
617 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16IC_PID) },
618 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) },
619 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) },
620 { USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) },
621 { USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) },
622 { USB_DEVICE(FTDI_VID, FTDI_ECLO_COM_1WIRE_PID) },
623 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) },
624 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) },
625 { USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) },
626 { USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) },
627 { USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) },
628 { USB_DEVICE(ICOM_ID1_VID, ICOM_ID1_PID) },
629 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_TMU_PID) },
630 { USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) },
631 { USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) },
632 { USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) },
633 { USB_DEVICE(TESTO_VID, TESTO_USB_INTERFACE_PID) },
634 { USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) },
635 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) },
636 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) },
637 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) },
638 { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) },
639 { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
640 { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) },
641 { USB_DEVICE(FTDI_VID, FTDI_PHI_FISCO_PID) },
642 { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) },
643 { USB_DEVICE(FTDI_VID, FTDI_ELSTER_UNICOM_PID) },
644 { USB_DEVICE(FTDI_VID, FTDI_PROPOX_JTAGCABLEII_PID) },
645 { USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID),
646 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
647 { USB_DEVICE(FIC_VID, FIC_NEO1973_DEBUG_PID),
648 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
649 { USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID),
650 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
651 { USB_DEVICE(FTDI_VID, LMI_LM3S_DEVEL_BOARD_PID),
652 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
653 { USB_DEVICE(FTDI_VID, LMI_LM3S_EVAL_BOARD_PID),
654 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
655 { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
656 { USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) },
657 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO4x4_PID) },
658 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DGQG_PID) },
659 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DUSB_PID) },
660 { }, /* Optional parameter entry */
661 { } /* Terminating entry */
662 };
663
664 MODULE_DEVICE_TABLE(usb, id_table_combined);
665
666 static struct usb_driver ftdi_driver = {
667 .name = "ftdi_sio",
668 .probe = usb_serial_probe,
669 .disconnect = usb_serial_disconnect,
670 .id_table = id_table_combined,
671 .no_dynamic_id = 1,
672 };
673
674 static const char *ftdi_chip_name[] = {
675 [SIO] = "SIO", /* the serial part of FT8U100AX */
676 [FT8U232AM] = "FT8U232AM",
677 [FT232BM] = "FT232BM",
678 [FT2232C] = "FT2232C",
679 [FT232RL] = "FT232RL",
680 };
681
682
683 /* Constants for read urb and write urb */
684 #define BUFSZ 512
685 #define PKTSZ 64
686
687 /* rx_flags */
688 #define THROTTLED 0x01
689 #define ACTUALLY_THROTTLED 0x02
690
691 /* Used for TIOCMIWAIT */
692 #define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD)
693 #define FTDI_STATUS_B1_MASK (FTDI_RS_BI)
694 /* End TIOCMIWAIT */
695
696 #define FTDI_IMPL_ASYNC_FLAGS = (ASYNC_SPD_HI | ASYNC_SPD_VHI \
697 | ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP)
698
699 /* function prototypes for a FTDI serial converter */
700 static int ftdi_sio_probe(struct usb_serial *serial,
701 const struct usb_device_id *id);
702 static void ftdi_shutdown(struct usb_serial *serial);
703 static int ftdi_sio_port_probe(struct usb_serial_port *port);
704 static int ftdi_sio_port_remove(struct usb_serial_port *port);
705 static int ftdi_open(struct tty_struct *tty,
706 struct usb_serial_port *port, struct file *filp);
707 static void ftdi_close(struct tty_struct *tty,
708 struct usb_serial_port *port, struct file *filp);
709 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
710 const unsigned char *buf, int count);
711 static int ftdi_write_room(struct tty_struct *tty);
712 static int ftdi_chars_in_buffer(struct tty_struct *tty);
713 static void ftdi_write_bulk_callback(struct urb *urb);
714 static void ftdi_read_bulk_callback(struct urb *urb);
715 static void ftdi_process_read(struct work_struct *work);
716 static void ftdi_set_termios(struct tty_struct *tty,
717 struct usb_serial_port *port, struct ktermios *old);
718 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file);
719 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
720 unsigned int set, unsigned int clear);
721 static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
722 unsigned int cmd, unsigned long arg);
723 static void ftdi_break_ctl(struct tty_struct *tty, int break_state);
724 static void ftdi_throttle(struct tty_struct *tty);
725 static void ftdi_unthrottle(struct tty_struct *tty);
726
727 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base);
728 static unsigned short int ftdi_232am_baud_to_divisor(int baud);
729 static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base);
730 static __u32 ftdi_232bm_baud_to_divisor(int baud);
731
732 static struct usb_serial_driver ftdi_sio_device = {
733 .driver = {
734 .owner = THIS_MODULE,
735 .name = "ftdi_sio",
736 },
737 .description = "FTDI USB Serial Device",
738 .usb_driver = &ftdi_driver ,
739 .id_table = id_table_combined,
740 .num_ports = 1,
741 .probe = ftdi_sio_probe,
742 .port_probe = ftdi_sio_port_probe,
743 .port_remove = ftdi_sio_port_remove,
744 .open = ftdi_open,
745 .close = ftdi_close,
746 .throttle = ftdi_throttle,
747 .unthrottle = ftdi_unthrottle,
748 .write = ftdi_write,
749 .write_room = ftdi_write_room,
750 .chars_in_buffer = ftdi_chars_in_buffer,
751 .read_bulk_callback = ftdi_read_bulk_callback,
752 .write_bulk_callback = ftdi_write_bulk_callback,
753 .tiocmget = ftdi_tiocmget,
754 .tiocmset = ftdi_tiocmset,
755 .ioctl = ftdi_ioctl,
756 .set_termios = ftdi_set_termios,
757 .break_ctl = ftdi_break_ctl,
758 .shutdown = ftdi_shutdown,
759 };
760
761
762 #define WDR_TIMEOUT 5000 /* default urb timeout */
763 #define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */
764
765 /* High and low are for DTR, RTS etc etc */
766 #define HIGH 1
767 #define LOW 0
768
769 /* number of outstanding urbs to prevent userspace DoS from happening */
770 #define URB_UPPER_LIMIT 42
771
772 /*
773 * ***************************************************************************
774 * Utility functions
775 * ***************************************************************************
776 */
777
778 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base)
779 {
780 unsigned short int divisor;
781 /* divisor shifted 3 bits to the left */
782 int divisor3 = base / 2 / baud;
783 if ((divisor3 & 0x7) == 7)
784 divisor3++; /* round x.7/8 up to x+1 */
785 divisor = divisor3 >> 3;
786 divisor3 &= 0x7;
787 if (divisor3 == 1)
788 divisor |= 0xc000;
789 else if (divisor3 >= 4)
790 divisor |= 0x4000;
791 else if (divisor3 != 0)
792 divisor |= 0x8000;
793 else if (divisor == 1)
794 divisor = 0; /* special case for maximum baud rate */
795 return divisor;
796 }
797
798 static unsigned short int ftdi_232am_baud_to_divisor(int baud)
799 {
800 return ftdi_232am_baud_base_to_divisor(baud, 48000000);
801 }
802
803 static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base)
804 {
805 static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
806 __u32 divisor;
807 /* divisor shifted 3 bits to the left */
808 int divisor3 = base / 2 / baud;
809 divisor = divisor3 >> 3;
810 divisor |= (__u32)divfrac[divisor3 & 0x7] << 14;
811 /* Deal with special cases for highest baud rates. */
812 if (divisor == 1)
813 divisor = 0;
814 else if (divisor == 0x4001)
815 divisor = 1;
816 return divisor;
817 }
818
819 static __u32 ftdi_232bm_baud_to_divisor(int baud)
820 {
821 return ftdi_232bm_baud_base_to_divisor(baud, 48000000);
822 }
823
824 #define set_mctrl(port, set) update_mctrl((port), (set), 0)
825 #define clear_mctrl(port, clear) update_mctrl((port), 0, (clear))
826
827 static int update_mctrl(struct usb_serial_port *port, unsigned int set,
828 unsigned int clear)
829 {
830 struct ftdi_private *priv = usb_get_serial_port_data(port);
831 char *buf;
832 unsigned urb_value;
833 int rv;
834
835 if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
836 dbg("%s - DTR|RTS not being set|cleared", __func__);
837 return 0; /* no change */
838 }
839
840 buf = kmalloc(1, GFP_NOIO);
841 if (!buf)
842 return -ENOMEM;
843
844 clear &= ~set; /* 'set' takes precedence over 'clear' */
845 urb_value = 0;
846 if (clear & TIOCM_DTR)
847 urb_value |= FTDI_SIO_SET_DTR_LOW;
848 if (clear & TIOCM_RTS)
849 urb_value |= FTDI_SIO_SET_RTS_LOW;
850 if (set & TIOCM_DTR)
851 urb_value |= FTDI_SIO_SET_DTR_HIGH;
852 if (set & TIOCM_RTS)
853 urb_value |= FTDI_SIO_SET_RTS_HIGH;
854 rv = usb_control_msg(port->serial->dev,
855 usb_sndctrlpipe(port->serial->dev, 0),
856 FTDI_SIO_SET_MODEM_CTRL_REQUEST,
857 FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
858 urb_value, priv->interface,
859 buf, 0, WDR_TIMEOUT);
860
861 kfree(buf);
862 if (rv < 0) {
863 err("%s Error from MODEM_CTRL urb: DTR %s, RTS %s",
864 __func__,
865 (set & TIOCM_DTR) ? "HIGH" :
866 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
867 (set & TIOCM_RTS) ? "HIGH" :
868 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
869 } else {
870 dbg("%s - DTR %s, RTS %s", __func__,
871 (set & TIOCM_DTR) ? "HIGH" :
872 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
873 (set & TIOCM_RTS) ? "HIGH" :
874 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
875 /* FIXME: locking on last_dtr_rts */
876 priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set;
877 }
878 return rv;
879 }
880
881
882 static __u32 get_ftdi_divisor(struct tty_struct *tty,
883 struct usb_serial_port *port)
884 { /* get_ftdi_divisor */
885 struct ftdi_private *priv = usb_get_serial_port_data(port);
886 __u32 div_value = 0;
887 int div_okay = 1;
888 int baud;
889
890 /*
891 * The logic involved in setting the baudrate can be cleanly split into
892 * 3 steps.
893 * 1. Standard baud rates are set in tty->termios->c_cflag
894 * 2. If these are not enough, you can set any speed using alt_speed as
895 * follows:
896 * - set tty->termios->c_cflag speed to B38400
897 * - set your real speed in tty->alt_speed; it gets ignored when
898 * alt_speed==0, (or)
899 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
900 * follows:
901 * flags & ASYNC_SPD_MASK == ASYNC_SPD_[HI, VHI, SHI, WARP],
902 * this just sets alt_speed to (HI: 57600, VHI: 115200,
903 * SHI: 230400, WARP: 460800)
904 * ** Steps 1, 2 are done courtesy of tty_get_baud_rate
905 * 3. You can also set baud rate by setting custom divisor as follows
906 * - set tty->termios->c_cflag speed to B38400
907 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
908 * follows:
909 * o flags & ASYNC_SPD_MASK == ASYNC_SPD_CUST
910 * o custom_divisor set to baud_base / your_new_baudrate
911 * ** Step 3 is done courtesy of code borrowed from serial.c
912 * I should really spend some time and separate + move this common
913 * code to serial.c, it is replicated in nearly every serial driver
914 * you see.
915 */
916
917 /* 1. Get the baud rate from the tty settings, this observes
918 alt_speed hack */
919
920 baud = tty_get_baud_rate(tty);
921 dbg("%s - tty_get_baud_rate reports speed %d", __func__, baud);
922
923 /* 2. Observe async-compatible custom_divisor hack, update baudrate
924 if needed */
925
926 if (baud == 38400 &&
927 ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
928 (priv->custom_divisor)) {
929 baud = priv->baud_base / priv->custom_divisor;
930 dbg("%s - custom divisor %d sets baud rate to %d",
931 __func__, priv->custom_divisor, baud);
932 }
933
934 /* 3. Convert baudrate to device-specific divisor */
935
936 if (!baud)
937 baud = 9600;
938 switch (priv->chip_type) {
939 case SIO: /* SIO chip */
940 switch (baud) {
941 case 300: div_value = ftdi_sio_b300; break;
942 case 600: div_value = ftdi_sio_b600; break;
943 case 1200: div_value = ftdi_sio_b1200; break;
944 case 2400: div_value = ftdi_sio_b2400; break;
945 case 4800: div_value = ftdi_sio_b4800; break;
946 case 9600: div_value = ftdi_sio_b9600; break;
947 case 19200: div_value = ftdi_sio_b19200; break;
948 case 38400: div_value = ftdi_sio_b38400; break;
949 case 57600: div_value = ftdi_sio_b57600; break;
950 case 115200: div_value = ftdi_sio_b115200; break;
951 } /* baud */
952 if (div_value == 0) {
953 dbg("%s - Baudrate (%d) requested is not supported",
954 __func__, baud);
955 div_value = ftdi_sio_b9600;
956 baud = 9600;
957 div_okay = 0;
958 }
959 break;
960 case FT8U232AM: /* 8U232AM chip */
961 if (baud <= 3000000) {
962 div_value = ftdi_232am_baud_to_divisor(baud);
963 } else {
964 dbg("%s - Baud rate too high!", __func__);
965 baud = 9600;
966 div_value = ftdi_232am_baud_to_divisor(9600);
967 div_okay = 0;
968 }
969 break;
970 case FT232BM: /* FT232BM chip */
971 case FT2232C: /* FT2232C chip */
972 case FT232RL:
973 if (baud <= 3000000) {
974 div_value = ftdi_232bm_baud_to_divisor(baud);
975 } else {
976 dbg("%s - Baud rate too high!", __func__);
977 div_value = ftdi_232bm_baud_to_divisor(9600);
978 div_okay = 0;
979 baud = 9600;
980 }
981 break;
982 } /* priv->chip_type */
983
984 if (div_okay) {
985 dbg("%s - Baud rate set to %d (divisor 0x%lX) on chip %s",
986 __func__, baud, (unsigned long)div_value,
987 ftdi_chip_name[priv->chip_type]);
988 }
989
990 tty_encode_baud_rate(tty, baud, baud);
991 return div_value;
992 }
993
994 static int change_speed(struct tty_struct *tty, struct usb_serial_port *port)
995 {
996 struct ftdi_private *priv = usb_get_serial_port_data(port);
997 char *buf;
998 __u16 urb_value;
999 __u16 urb_index;
1000 __u32 urb_index_value;
1001 int rv;
1002
1003 buf = kmalloc(1, GFP_NOIO);
1004 if (!buf)
1005 return -ENOMEM;
1006
1007 urb_index_value = get_ftdi_divisor(tty, port);
1008 urb_value = (__u16)urb_index_value;
1009 urb_index = (__u16)(urb_index_value >> 16);
1010 if (priv->interface) { /* FT2232C */
1011 urb_index = (__u16)((urb_index << 8) | priv->interface);
1012 }
1013
1014 rv = usb_control_msg(port->serial->dev,
1015 usb_sndctrlpipe(port->serial->dev, 0),
1016 FTDI_SIO_SET_BAUDRATE_REQUEST,
1017 FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
1018 urb_value, urb_index,
1019 buf, 0, WDR_SHORT_TIMEOUT);
1020
1021 kfree(buf);
1022 return rv;
1023 }
1024
1025
1026
1027 static int get_serial_info(struct usb_serial_port *port,
1028 struct serial_struct __user *retinfo)
1029 {
1030 struct ftdi_private *priv = usb_get_serial_port_data(port);
1031 struct serial_struct tmp;
1032
1033 if (!retinfo)
1034 return -EFAULT;
1035 memset(&tmp, 0, sizeof(tmp));
1036 tmp.flags = priv->flags;
1037 tmp.baud_base = priv->baud_base;
1038 tmp.custom_divisor = priv->custom_divisor;
1039 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1040 return -EFAULT;
1041 return 0;
1042 } /* get_serial_info */
1043
1044
1045 static int set_serial_info(struct tty_struct *tty,
1046 struct usb_serial_port *port, struct serial_struct __user *newinfo)
1047 { /* set_serial_info */
1048 struct ftdi_private *priv = usb_get_serial_port_data(port);
1049 struct serial_struct new_serial;
1050 struct ftdi_private old_priv;
1051
1052 if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
1053 return -EFAULT;
1054 old_priv = *priv;
1055
1056 /* Do error checking and permission checking */
1057
1058 if (!capable(CAP_SYS_ADMIN)) {
1059 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
1060 (priv->flags & ~ASYNC_USR_MASK)))
1061 return -EPERM;
1062 priv->flags = ((priv->flags & ~ASYNC_USR_MASK) |
1063 (new_serial.flags & ASYNC_USR_MASK));
1064 priv->custom_divisor = new_serial.custom_divisor;
1065 goto check_and_exit;
1066 }
1067
1068 if ((new_serial.baud_base != priv->baud_base) &&
1069 (new_serial.baud_base < 9600))
1070 return -EINVAL;
1071
1072 /* Make the changes - these are privileged changes! */
1073
1074 priv->flags = ((priv->flags & ~ASYNC_FLAGS) |
1075 (new_serial.flags & ASYNC_FLAGS));
1076 priv->custom_divisor = new_serial.custom_divisor;
1077
1078 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1079
1080 check_and_exit:
1081 if ((old_priv.flags & ASYNC_SPD_MASK) !=
1082 (priv->flags & ASYNC_SPD_MASK)) {
1083 if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
1084 tty->alt_speed = 57600;
1085 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
1086 tty->alt_speed = 115200;
1087 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
1088 tty->alt_speed = 230400;
1089 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
1090 tty->alt_speed = 460800;
1091 else
1092 tty->alt_speed = 0;
1093 }
1094 if (((old_priv.flags & ASYNC_SPD_MASK) !=
1095 (priv->flags & ASYNC_SPD_MASK)) ||
1096 (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
1097 (old_priv.custom_divisor != priv->custom_divisor))) {
1098 change_speed(tty, port);
1099 }
1100 return 0;
1101
1102 } /* set_serial_info */
1103
1104
1105 /* Determine type of FTDI chip based on USB config and descriptor. */
1106 static void ftdi_determine_type(struct usb_serial_port *port)
1107 {
1108 struct ftdi_private *priv = usb_get_serial_port_data(port);
1109 struct usb_serial *serial = port->serial;
1110 struct usb_device *udev = serial->dev;
1111 unsigned version;
1112 unsigned interfaces;
1113
1114 /* Assume it is not the original SIO device for now. */
1115 priv->baud_base = 48000000 / 2;
1116 priv->write_offset = 0;
1117
1118 version = le16_to_cpu(udev->descriptor.bcdDevice);
1119 interfaces = udev->actconfig->desc.bNumInterfaces;
1120 dbg("%s: bcdDevice = 0x%x, bNumInterfaces = %u", __func__,
1121 version, interfaces);
1122 if (interfaces > 1) {
1123 int inter;
1124
1125 /* Multiple interfaces. Assume FT2232C. */
1126 priv->chip_type = FT2232C;
1127 /* Determine interface code. */
1128 inter = serial->interface->altsetting->desc.bInterfaceNumber;
1129 if (inter == 0)
1130 priv->interface = PIT_SIOA;
1131 else
1132 priv->interface = PIT_SIOB;
1133 /* BM-type devices have a bug where bcdDevice gets set
1134 * to 0x200 when iSerialNumber is 0. */
1135 if (version < 0x500) {
1136 dbg("%s: something fishy - bcdDevice too low for multi-interface device",
1137 __func__);
1138 }
1139 } else if (version < 0x200) {
1140 /* Old device. Assume its the original SIO. */
1141 priv->chip_type = SIO;
1142 priv->baud_base = 12000000 / 16;
1143 priv->write_offset = 1;
1144 } else if (version < 0x400) {
1145 /* Assume its an FT8U232AM (or FT8U245AM) */
1146 /* (It might be a BM because of the iSerialNumber bug,
1147 * but it will still work as an AM device.) */
1148 priv->chip_type = FT8U232AM;
1149 } else if (version < 0x600) {
1150 /* Assume its an FT232BM (or FT245BM) */
1151 priv->chip_type = FT232BM;
1152 } else {
1153 /* Assume its an FT232R */
1154 priv->chip_type = FT232RL;
1155 }
1156 info("Detected %s", ftdi_chip_name[priv->chip_type]);
1157 }
1158
1159
1160 /*
1161 * ***************************************************************************
1162 * Sysfs Attribute
1163 * ***************************************************************************
1164 */
1165
1166 static ssize_t show_latency_timer(struct device *dev,
1167 struct device_attribute *attr, char *buf)
1168 {
1169 struct usb_serial_port *port = to_usb_serial_port(dev);
1170 struct ftdi_private *priv = usb_get_serial_port_data(port);
1171 struct usb_device *udev = port->serial->dev;
1172 unsigned short latency = 0;
1173 int rv = 0;
1174
1175
1176 dbg("%s", __func__);
1177
1178 rv = usb_control_msg(udev,
1179 usb_rcvctrlpipe(udev, 0),
1180 FTDI_SIO_GET_LATENCY_TIMER_REQUEST,
1181 FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE,
1182 0, priv->interface,
1183 (char *) &latency, 1, WDR_TIMEOUT);
1184
1185 if (rv < 0) {
1186 dev_err(dev, "Unable to read latency timer: %i\n", rv);
1187 return -EIO;
1188 }
1189 return sprintf(buf, "%i\n", latency);
1190 }
1191
1192 /* Write a new value of the latency timer, in units of milliseconds. */
1193 static ssize_t store_latency_timer(struct device *dev,
1194 struct device_attribute *attr, const char *valbuf,
1195 size_t count)
1196 {
1197 struct usb_serial_port *port = to_usb_serial_port(dev);
1198 struct ftdi_private *priv = usb_get_serial_port_data(port);
1199 struct usb_device *udev = port->serial->dev;
1200 char buf[1];
1201 int v = simple_strtoul(valbuf, NULL, 10);
1202 int rv = 0;
1203
1204 dbg("%s: setting latency timer = %i", __func__, v);
1205
1206 rv = usb_control_msg(udev,
1207 usb_sndctrlpipe(udev, 0),
1208 FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
1209 FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
1210 v, priv->interface,
1211 buf, 0, WDR_TIMEOUT);
1212
1213 if (rv < 0) {
1214 dev_err(dev, "Unable to write latency timer: %i\n", rv);
1215 return -EIO;
1216 }
1217
1218 return count;
1219 }
1220
1221 /* Write an event character directly to the FTDI register. The ASCII
1222 value is in the low 8 bits, with the enable bit in the 9th bit. */
1223 static ssize_t store_event_char(struct device *dev,
1224 struct device_attribute *attr, const char *valbuf, size_t count)
1225 {
1226 struct usb_serial_port *port = to_usb_serial_port(dev);
1227 struct ftdi_private *priv = usb_get_serial_port_data(port);
1228 struct usb_device *udev = port->serial->dev;
1229 char buf[1];
1230 int v = simple_strtoul(valbuf, NULL, 10);
1231 int rv = 0;
1232
1233 dbg("%s: setting event char = %i", __func__, v);
1234
1235 rv = usb_control_msg(udev,
1236 usb_sndctrlpipe(udev, 0),
1237 FTDI_SIO_SET_EVENT_CHAR_REQUEST,
1238 FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE,
1239 v, priv->interface,
1240 buf, 0, WDR_TIMEOUT);
1241
1242 if (rv < 0) {
1243 dbg("Unable to write event character: %i", rv);
1244 return -EIO;
1245 }
1246
1247 return count;
1248 }
1249
1250 static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer,
1251 store_latency_timer);
1252 static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char);
1253
1254 static int create_sysfs_attrs(struct usb_serial_port *port)
1255 {
1256 struct ftdi_private *priv = usb_get_serial_port_data(port);
1257 int retval = 0;
1258
1259 dbg("%s", __func__);
1260
1261 /* XXX I've no idea if the original SIO supports the event_char
1262 * sysfs parameter, so I'm playing it safe. */
1263 if (priv->chip_type != SIO) {
1264 dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]);
1265 retval = device_create_file(&port->dev, &dev_attr_event_char);
1266 if ((!retval) &&
1267 (priv->chip_type == FT232BM ||
1268 priv->chip_type == FT2232C ||
1269 priv->chip_type == FT232RL)) {
1270 retval = device_create_file(&port->dev,
1271 &dev_attr_latency_timer);
1272 }
1273 }
1274 return retval;
1275 }
1276
1277 static void remove_sysfs_attrs(struct usb_serial_port *port)
1278 {
1279 struct ftdi_private *priv = usb_get_serial_port_data(port);
1280
1281 dbg("%s", __func__);
1282
1283 /* XXX see create_sysfs_attrs */
1284 if (priv->chip_type != SIO) {
1285 device_remove_file(&port->dev, &dev_attr_event_char);
1286 if (priv->chip_type == FT232BM ||
1287 priv->chip_type == FT2232C ||
1288 priv->chip_type == FT232RL) {
1289 device_remove_file(&port->dev, &dev_attr_latency_timer);
1290 }
1291 }
1292
1293 }
1294
1295 /*
1296 * ***************************************************************************
1297 * FTDI driver specific functions
1298 * ***************************************************************************
1299 */
1300
1301 /* Probe function to check for special devices */
1302 static int ftdi_sio_probe(struct usb_serial *serial,
1303 const struct usb_device_id *id)
1304 {
1305 struct ftdi_sio_quirk *quirk =
1306 (struct ftdi_sio_quirk *)id->driver_info;
1307
1308 if (quirk && quirk->probe) {
1309 int ret = quirk->probe(serial);
1310 if (ret != 0)
1311 return ret;
1312 }
1313
1314 usb_set_serial_data(serial, (void *)id->driver_info);
1315
1316 return 0;
1317 }
1318
1319 static int ftdi_sio_port_probe(struct usb_serial_port *port)
1320 {
1321 struct ftdi_private *priv;
1322 struct ftdi_sio_quirk *quirk = usb_get_serial_data(port->serial);
1323
1324
1325 dbg("%s", __func__);
1326
1327 priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL);
1328 if (!priv) {
1329 err("%s- kmalloc(%Zd) failed.", __func__,
1330 sizeof(struct ftdi_private));
1331 return -ENOMEM;
1332 }
1333
1334 spin_lock_init(&priv->rx_lock);
1335 spin_lock_init(&priv->tx_lock);
1336 init_waitqueue_head(&priv->delta_msr_wait);
1337 /* This will push the characters through immediately rather
1338 than queue a task to deliver them */
1339 priv->flags = ASYNC_LOW_LATENCY;
1340
1341 if (quirk && quirk->port_probe)
1342 quirk->port_probe(priv);
1343
1344 /* Increase the size of read buffers */
1345 kfree(port->bulk_in_buffer);
1346 port->bulk_in_buffer = kmalloc(BUFSZ, GFP_KERNEL);
1347 if (!port->bulk_in_buffer) {
1348 kfree(priv);
1349 return -ENOMEM;
1350 }
1351 if (port->read_urb) {
1352 port->read_urb->transfer_buffer = port->bulk_in_buffer;
1353 port->read_urb->transfer_buffer_length = BUFSZ;
1354 }
1355
1356 INIT_DELAYED_WORK(&priv->rx_work, ftdi_process_read);
1357 priv->port = port;
1358
1359 /* Free port's existing write urb and transfer buffer. */
1360 if (port->write_urb) {
1361 usb_free_urb(port->write_urb);
1362 port->write_urb = NULL;
1363 }
1364 kfree(port->bulk_out_buffer);
1365 port->bulk_out_buffer = NULL;
1366
1367 usb_set_serial_port_data(port, priv);
1368
1369 ftdi_determine_type(port);
1370 create_sysfs_attrs(port);
1371 return 0;
1372 }
1373
1374 /* Setup for the USB-UIRT device, which requires hardwired
1375 * baudrate (38400 gets mapped to 312500) */
1376 /* Called from usbserial:serial_probe */
1377 static void ftdi_USB_UIRT_setup(struct ftdi_private *priv)
1378 {
1379 dbg("%s", __func__);
1380
1381 priv->flags |= ASYNC_SPD_CUST;
1382 priv->custom_divisor = 77;
1383 priv->force_baud = 38400;
1384 } /* ftdi_USB_UIRT_setup */
1385
1386 /* Setup for the HE-TIRA1 device, which requires hardwired
1387 * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */
1388
1389 static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv)
1390 {
1391 dbg("%s", __func__);
1392
1393 priv->flags |= ASYNC_SPD_CUST;
1394 priv->custom_divisor = 240;
1395 priv->force_baud = 38400;
1396 priv->force_rtscts = 1;
1397 } /* ftdi_HE_TIRA1_setup */
1398
1399 /*
1400 * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko
1401 * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from
1402 * userspace using openocd.
1403 */
1404 static int ftdi_jtag_probe(struct usb_serial *serial)
1405 {
1406 struct usb_device *udev = serial->dev;
1407 struct usb_interface *interface = serial->interface;
1408
1409 dbg("%s", __func__);
1410
1411 if (interface == udev->actconfig->interface[0]) {
1412 info("Ignoring serial port reserved for JTAG");
1413 return -ENODEV;
1414 }
1415
1416 return 0;
1417 }
1418
1419 /*
1420 * The Matrix Orbital VK204-25-USB has an invalid IN endpoint.
1421 * We have to correct it if we want to read from it.
1422 */
1423 static int ftdi_mtxorb_hack_setup(struct usb_serial *serial)
1424 {
1425 struct usb_host_endpoint *ep = serial->dev->ep_in[1];
1426 struct usb_endpoint_descriptor *ep_desc = &ep->desc;
1427
1428 if (ep->enabled && ep_desc->wMaxPacketSize == 0) {
1429 ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
1430 info("Fixing invalid wMaxPacketSize on read pipe");
1431 }
1432
1433 return 0;
1434 }
1435
1436 /* ftdi_shutdown is called from usbserial:usb_serial_disconnect
1437 * it is called when the usb device is disconnected
1438 *
1439 * usbserial:usb_serial_disconnect
1440 * calls __serial_close for each open of the port
1441 * shutdown is called then (ie ftdi_shutdown)
1442 */
1443 static void ftdi_shutdown(struct usb_serial *serial)
1444 {
1445 dbg("%s", __func__);
1446 }
1447
1448 static int ftdi_sio_port_remove(struct usb_serial_port *port)
1449 {
1450 struct ftdi_private *priv = usb_get_serial_port_data(port);
1451
1452 dbg("%s", __func__);
1453
1454 remove_sysfs_attrs(port);
1455
1456 /* all open ports are closed at this point
1457 * (by usbserial.c:__serial_close, which calls ftdi_close)
1458 */
1459
1460 if (priv) {
1461 usb_set_serial_port_data(port, NULL);
1462 kfree(priv);
1463 }
1464
1465 return 0;
1466 }
1467
1468 static int ftdi_open(struct tty_struct *tty,
1469 struct usb_serial_port *port, struct file *filp)
1470 { /* ftdi_open */
1471 struct usb_device *dev = port->serial->dev;
1472 struct ftdi_private *priv = usb_get_serial_port_data(port);
1473 unsigned long flags;
1474
1475 int result = 0;
1476 char buf[1]; /* Needed for the usb_control_msg I think */
1477
1478 dbg("%s", __func__);
1479
1480 spin_lock_irqsave(&priv->tx_lock, flags);
1481 priv->tx_bytes = 0;
1482 spin_unlock_irqrestore(&priv->tx_lock, flags);
1483 spin_lock_irqsave(&priv->rx_lock, flags);
1484 priv->rx_bytes = 0;
1485 spin_unlock_irqrestore(&priv->rx_lock, flags);
1486
1487 if (tty)
1488 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1489
1490 /* No error checking for this (will get errors later anyway) */
1491 /* See ftdi_sio.h for description of what is reset */
1492 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1493 FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
1494 FTDI_SIO_RESET_SIO,
1495 priv->interface, buf, 0, WDR_TIMEOUT);
1496
1497 /* Termios defaults are set by usb_serial_init. We don't change
1498 port->tty->termios - this would loose speed settings, etc.
1499 This is same behaviour as serial.c/rs_open() - Kuba */
1500
1501 /* ftdi_set_termios will send usb control messages */
1502 if (tty)
1503 ftdi_set_termios(tty, port, tty->termios);
1504
1505 /* FIXME: Flow control might be enabled, so it should be checked -
1506 we have no control of defaults! */
1507 /* Turn on RTS and DTR since we are not flow controlling by default */
1508 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1509
1510 /* Not throttled */
1511 spin_lock_irqsave(&priv->rx_lock, flags);
1512 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
1513 spin_unlock_irqrestore(&priv->rx_lock, flags);
1514
1515 /* Start reading from the device */
1516 priv->rx_processed = 0;
1517 usb_fill_bulk_urb(port->read_urb, dev,
1518 usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress),
1519 port->read_urb->transfer_buffer,
1520 port->read_urb->transfer_buffer_length,
1521 ftdi_read_bulk_callback, port);
1522 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
1523 if (result)
1524 err("%s - failed submitting read urb, error %d",
1525 __func__, result);
1526
1527
1528 return result;
1529 } /* ftdi_open */
1530
1531
1532
1533 /*
1534 * usbserial:__serial_close only calls ftdi_close if the point is open
1535 *
1536 * This only gets called when it is the last close
1537 *
1538 *
1539 */
1540
1541 static void ftdi_close(struct tty_struct *tty,
1542 struct usb_serial_port *port, struct file *filp)
1543 { /* ftdi_close */
1544 unsigned int c_cflag = tty->termios->c_cflag;
1545 struct ftdi_private *priv = usb_get_serial_port_data(port);
1546 char buf[1];
1547
1548 dbg("%s", __func__);
1549
1550 mutex_lock(&port->serial->disc_mutex);
1551 if (c_cflag & HUPCL && !port->serial->disconnected) {
1552 /* Disable flow control */
1553 if (usb_control_msg(port->serial->dev,
1554 usb_sndctrlpipe(port->serial->dev, 0),
1555 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
1556 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
1557 0, priv->interface, buf, 0,
1558 WDR_TIMEOUT) < 0) {
1559 err("error from flowcontrol urb");
1560 }
1561
1562 /* drop RTS and DTR */
1563 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1564 } /* Note change no line if hupcl is off */
1565 mutex_unlock(&port->serial->disc_mutex);
1566
1567 /* cancel any scheduled reading */
1568 cancel_delayed_work(&priv->rx_work);
1569 flush_scheduled_work();
1570
1571 /* shutdown our bulk read */
1572 usb_kill_urb(port->read_urb);
1573 } /* ftdi_close */
1574
1575
1576
1577 /* The SIO requires the first byte to have:
1578 * B0 1
1579 * B1 0
1580 * B2..7 length of message excluding byte 0
1581 *
1582 * The new devices do not require this byte
1583 */
1584 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
1585 const unsigned char *buf, int count)
1586 { /* ftdi_write */
1587 struct ftdi_private *priv = usb_get_serial_port_data(port);
1588 struct urb *urb;
1589 unsigned char *buffer;
1590 int data_offset ; /* will be 1 for the SIO and 0 otherwise */
1591 int status;
1592 int transfer_size;
1593 unsigned long flags;
1594
1595 dbg("%s port %d, %d bytes", __func__, port->number, count);
1596
1597 if (count == 0) {
1598 dbg("write request of 0 bytes");
1599 return 0;
1600 }
1601 spin_lock_irqsave(&priv->tx_lock, flags);
1602 if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) {
1603 spin_unlock_irqrestore(&priv->tx_lock, flags);
1604 dbg("%s - write limit hit\n", __func__);
1605 return 0;
1606 }
1607 priv->tx_outstanding_urbs++;
1608 spin_unlock_irqrestore(&priv->tx_lock, flags);
1609
1610 data_offset = priv->write_offset;
1611 dbg("data_offset set to %d", data_offset);
1612
1613 /* Determine total transfer size */
1614 transfer_size = count;
1615 if (data_offset > 0) {
1616 /* Original sio needs control bytes too... */
1617 transfer_size += (data_offset *
1618 ((count + (PKTSZ - 1 - data_offset)) /
1619 (PKTSZ - data_offset)));
1620 }
1621
1622 buffer = kmalloc(transfer_size, GFP_ATOMIC);
1623 if (!buffer) {
1624 err("%s ran out of kernel memory for urb ...", __func__);
1625 count = -ENOMEM;
1626 goto error_no_buffer;
1627 }
1628
1629 urb = usb_alloc_urb(0, GFP_ATOMIC);
1630 if (!urb) {
1631 err("%s - no more free urbs", __func__);
1632 count = -ENOMEM;
1633 goto error_no_urb;
1634 }
1635
1636 /* Copy data */
1637 if (data_offset > 0) {
1638 /* Original sio requires control byte at start of
1639 each packet. */
1640 int user_pktsz = PKTSZ - data_offset;
1641 int todo = count;
1642 unsigned char *first_byte = buffer;
1643 const unsigned char *current_position = buf;
1644
1645 while (todo > 0) {
1646 if (user_pktsz > todo)
1647 user_pktsz = todo;
1648 /* Write the control byte at the front of the packet*/
1649 *first_byte = 1 | ((user_pktsz) << 2);
1650 /* Copy data for packet */
1651 memcpy(first_byte + data_offset,
1652 current_position, user_pktsz);
1653 first_byte += user_pktsz + data_offset;
1654 current_position += user_pktsz;
1655 todo -= user_pktsz;
1656 }
1657 } else {
1658 /* No control byte required. */
1659 /* Copy in the data to send */
1660 memcpy(buffer, buf, count);
1661 }
1662
1663 usb_serial_debug_data(debug, &port->dev, __func__,
1664 transfer_size, buffer);
1665
1666 /* fill the buffer and send it */
1667 usb_fill_bulk_urb(urb, port->serial->dev,
1668 usb_sndbulkpipe(port->serial->dev,
1669 port->bulk_out_endpointAddress),
1670 buffer, transfer_size,
1671 ftdi_write_bulk_callback, port);
1672
1673 status = usb_submit_urb(urb, GFP_ATOMIC);
1674 if (status) {
1675 err("%s - failed submitting write urb, error %d",
1676 __func__, status);
1677 count = status;
1678 goto error;
1679 } else {
1680 spin_lock_irqsave(&priv->tx_lock, flags);
1681 priv->tx_outstanding_bytes += count;
1682 priv->tx_bytes += count;
1683 spin_unlock_irqrestore(&priv->tx_lock, flags);
1684 }
1685
1686 /* we are done with this urb, so let the host driver
1687 * really free it when it is finished with it */
1688 usb_free_urb(urb);
1689
1690 dbg("%s write returning: %d", __func__, count);
1691 return count;
1692 error:
1693 usb_free_urb(urb);
1694 error_no_urb:
1695 kfree(buffer);
1696 error_no_buffer:
1697 spin_lock_irqsave(&priv->tx_lock, flags);
1698 priv->tx_outstanding_urbs--;
1699 spin_unlock_irqrestore(&priv->tx_lock, flags);
1700 return count;
1701 } /* ftdi_write */
1702
1703
1704 /* This function may get called when the device is closed */
1705
1706 static void ftdi_write_bulk_callback(struct urb *urb)
1707 {
1708 unsigned long flags;
1709 struct usb_serial_port *port = urb->context;
1710 struct ftdi_private *priv;
1711 int data_offset; /* will be 1 for the SIO and 0 otherwise */
1712 unsigned long countback;
1713 int status = urb->status;
1714
1715 /* free up the transfer buffer, as usb_free_urb() does not do this */
1716 kfree(urb->transfer_buffer);
1717
1718 dbg("%s - port %d", __func__, port->number);
1719
1720 if (status) {
1721 dbg("nonzero write bulk status received: %d", status);
1722 return;
1723 }
1724
1725 priv = usb_get_serial_port_data(port);
1726 if (!priv) {
1727 dbg("%s - bad port private data pointer - exiting", __func__);
1728 return;
1729 }
1730 /* account for transferred data */
1731 countback = urb->actual_length;
1732 data_offset = priv->write_offset;
1733 if (data_offset > 0) {
1734 /* Subtract the control bytes */
1735 countback -= (data_offset * DIV_ROUND_UP(countback, PKTSZ));
1736 }
1737 spin_lock_irqsave(&priv->tx_lock, flags);
1738 --priv->tx_outstanding_urbs;
1739 priv->tx_outstanding_bytes -= countback;
1740 spin_unlock_irqrestore(&priv->tx_lock, flags);
1741
1742 usb_serial_port_softint(port);
1743 } /* ftdi_write_bulk_callback */
1744
1745
1746 static int ftdi_write_room(struct tty_struct *tty)
1747 {
1748 struct usb_serial_port *port = tty->driver_data;
1749 struct ftdi_private *priv = usb_get_serial_port_data(port);
1750 int room;
1751 unsigned long flags;
1752
1753 dbg("%s - port %d", __func__, port->number);
1754
1755 spin_lock_irqsave(&priv->tx_lock, flags);
1756 if (priv->tx_outstanding_urbs < URB_UPPER_LIMIT) {
1757 /*
1758 * We really can take anything the user throws at us
1759 * but let's pick a nice big number to tell the tty
1760 * layer that we have lots of free space
1761 */
1762 room = 2048;
1763 } else {
1764 room = 0;
1765 }
1766 spin_unlock_irqrestore(&priv->tx_lock, flags);
1767 return room;
1768 }
1769
1770 static int ftdi_chars_in_buffer(struct tty_struct *tty)
1771 {
1772 struct usb_serial_port *port = tty->driver_data;
1773 struct ftdi_private *priv = usb_get_serial_port_data(port);
1774 int buffered;
1775 unsigned long flags;
1776
1777 dbg("%s - port %d", __func__, port->number);
1778
1779 spin_lock_irqsave(&priv->tx_lock, flags);
1780 buffered = (int)priv->tx_outstanding_bytes;
1781 spin_unlock_irqrestore(&priv->tx_lock, flags);
1782 if (buffered < 0) {
1783 err("%s outstanding tx bytes is negative!", __func__);
1784 buffered = 0;
1785 }
1786 return buffered;
1787 }
1788
1789 static void ftdi_read_bulk_callback(struct urb *urb)
1790 {
1791 struct usb_serial_port *port = urb->context;
1792 struct tty_struct *tty;
1793 struct ftdi_private *priv;
1794 unsigned long countread;
1795 unsigned long flags;
1796 int status = urb->status;
1797
1798 if (urb->number_of_packets > 0) {
1799 err("%s transfer_buffer_length %d actual_length %d number of packets %d",
1800 __func__,
1801 urb->transfer_buffer_length,
1802 urb->actual_length, urb->number_of_packets);
1803 err("%s transfer_flags %x ", __func__, urb->transfer_flags);
1804 }
1805
1806 dbg("%s - port %d", __func__, port->number);
1807
1808 if (port->port.count <= 0)
1809 return;
1810
1811 tty = port->port.tty;
1812 if (!tty) {
1813 dbg("%s - bad tty pointer - exiting", __func__);
1814 return;
1815 }
1816
1817 priv = usb_get_serial_port_data(port);
1818 if (!priv) {
1819 dbg("%s - bad port private data pointer - exiting", __func__);
1820 return;
1821 }
1822
1823 if (urb != port->read_urb)
1824 err("%s - Not my urb!", __func__);
1825
1826 if (status) {
1827 /* This will happen at close every time so it is a dbg not an
1828 err */
1829 dbg("(this is ok on close) nonzero read bulk status received: %d", status);
1830 return;
1831 }
1832
1833 /* count data bytes, but not status bytes */
1834 countread = urb->actual_length;
1835 countread -= 2 * DIV_ROUND_UP(countread, PKTSZ);
1836 spin_lock_irqsave(&priv->rx_lock, flags);
1837 priv->rx_bytes += countread;
1838 spin_unlock_irqrestore(&priv->rx_lock, flags);
1839
1840 ftdi_process_read(&priv->rx_work.work);
1841
1842 } /* ftdi_read_bulk_callback */
1843
1844
1845 static void ftdi_process_read(struct work_struct *work)
1846 { /* ftdi_process_read */
1847 struct ftdi_private *priv =
1848 container_of(work, struct ftdi_private, rx_work.work);
1849 struct usb_serial_port *port = priv->port;
1850 struct urb *urb;
1851 struct tty_struct *tty;
1852 char error_flag;
1853 unsigned char *data;
1854
1855 int i;
1856 int result;
1857 int need_flip;
1858 int packet_offset;
1859 unsigned long flags;
1860
1861 dbg("%s - port %d", __func__, port->number);
1862
1863 if (port->port.count <= 0)
1864 return;
1865
1866 tty = port->port.tty;
1867 if (!tty) {
1868 dbg("%s - bad tty pointer - exiting", __func__);
1869 return;
1870 }
1871
1872 priv = usb_get_serial_port_data(port);
1873 if (!priv) {
1874 dbg("%s - bad port private data pointer - exiting", __func__);
1875 return;
1876 }
1877
1878 urb = port->read_urb;
1879 if (!urb) {
1880 dbg("%s - bad read_urb pointer - exiting", __func__);
1881 return;
1882 }
1883
1884 data = urb->transfer_buffer;
1885
1886 if (priv->rx_processed) {
1887 dbg("%s - already processed: %d bytes, %d remain", __func__,
1888 priv->rx_processed,
1889 urb->actual_length - priv->rx_processed);
1890 } else {
1891 /* The first two bytes of every read packet are status */
1892 if (urb->actual_length > 2)
1893 usb_serial_debug_data(debug, &port->dev, __func__,
1894 urb->actual_length, data);
1895 else
1896 dbg("Status only: %03oo %03oo", data[0], data[1]);
1897 }
1898
1899
1900 /* TO DO -- check for hung up line and handle appropriately: */
1901 /* send hangup */
1902 /* See acm.c - you do a tty_hangup - eg tty_hangup(tty) */
1903 /* if CD is dropped and the line is not CLOCAL then we should hangup */
1904
1905 need_flip = 0;
1906 for (packet_offset = priv->rx_processed;
1907 packet_offset < urb->actual_length; packet_offset += PKTSZ) {
1908 int length;
1909
1910 /* Compare new line status to the old one, signal if different/
1911 N.B. packet may be processed more than once, but differences
1912 are only processed once. */
1913 if (priv != NULL) {
1914 char new_status = data[packet_offset + 0] &
1915 FTDI_STATUS_B0_MASK;
1916 if (new_status != priv->prev_status) {
1917 priv->diff_status |=
1918 new_status ^ priv->prev_status;
1919 wake_up_interruptible(&priv->delta_msr_wait);
1920 priv->prev_status = new_status;
1921 }
1922 }
1923
1924 length = min(PKTSZ, urb->actual_length-packet_offset)-2;
1925 if (length < 0) {
1926 err("%s - bad packet length: %d", __func__, length+2);
1927 length = 0;
1928 }
1929
1930 if (priv->rx_flags & THROTTLED) {
1931 dbg("%s - throttled", __func__);
1932 break;
1933 }
1934 if (tty_buffer_request_room(tty, length) < length) {
1935 /* break out & wait for throttling/unthrottling to
1936 happen */
1937 dbg("%s - receive room low", __func__);
1938 break;
1939 }
1940
1941 /* Handle errors and break */
1942 error_flag = TTY_NORMAL;
1943 /* Although the device uses a bitmask and hence can have
1944 multiple errors on a packet - the order here sets the
1945 priority the error is returned to the tty layer */
1946
1947 if (data[packet_offset+1] & FTDI_RS_OE) {
1948 error_flag = TTY_OVERRUN;
1949 dbg("OVERRRUN error");
1950 }
1951 if (data[packet_offset+1] & FTDI_RS_BI) {
1952 error_flag = TTY_BREAK;
1953 dbg("BREAK received");
1954 }
1955 if (data[packet_offset+1] & FTDI_RS_PE) {
1956 error_flag = TTY_PARITY;
1957 dbg("PARITY error");
1958 }
1959 if (data[packet_offset+1] & FTDI_RS_FE) {
1960 error_flag = TTY_FRAME;
1961 dbg("FRAMING error");
1962 }
1963 if (length > 0) {
1964 for (i = 2; i < length+2; i++) {
1965 /* Note that the error flag is duplicated for
1966 every character received since we don't know
1967 which character it applied to */
1968 tty_insert_flip_char(tty,
1969 data[packet_offset + i], error_flag);
1970 }
1971 need_flip = 1;
1972 }
1973
1974 #ifdef NOT_CORRECT_BUT_KEEPING_IT_FOR_NOW
1975 /* if a parity error is detected you get status packets forever
1976 until a character is sent without a parity error.
1977 This doesn't work well since the application receives a
1978 never ending stream of bad data - even though new data
1979 hasn't been sent. Therefore I (bill) have taken this out.
1980 However - this might make sense for framing errors and so on
1981 so I am leaving the code in for now.
1982 */
1983 else {
1984 if (error_flag != TTY_NORMAL) {
1985 dbg("error_flag is not normal");
1986 /* In this case it is just status - if that is
1987 an error send a bad character */
1988 if (tty->flip.count >= TTY_FLIPBUF_SIZE)
1989 tty_flip_buffer_push(tty);
1990 tty_insert_flip_char(tty, 0xff, error_flag);
1991 need_flip = 1;
1992 }
1993 }
1994 #endif
1995 } /* "for(packet_offset=0..." */
1996
1997 /* Low latency */
1998 if (need_flip)
1999 tty_flip_buffer_push(tty);
2000
2001 if (packet_offset < urb->actual_length) {
2002 /* not completely processed - record progress */
2003 priv->rx_processed = packet_offset;
2004 dbg("%s - incomplete, %d bytes processed, %d remain",
2005 __func__, packet_offset,
2006 urb->actual_length - packet_offset);
2007 /* check if we were throttled while processing */
2008 spin_lock_irqsave(&priv->rx_lock, flags);
2009 if (priv->rx_flags & THROTTLED) {
2010 priv->rx_flags |= ACTUALLY_THROTTLED;
2011 spin_unlock_irqrestore(&priv->rx_lock, flags);
2012 dbg("%s - deferring remainder until unthrottled",
2013 __func__);
2014 return;
2015 }
2016 spin_unlock_irqrestore(&priv->rx_lock, flags);
2017 /* if the port is closed stop trying to read */
2018 if (port->port.count > 0)
2019 /* delay processing of remainder */
2020 schedule_delayed_work(&priv->rx_work, 1);
2021 else
2022 dbg("%s - port is closed", __func__);
2023 return;
2024 }
2025
2026 /* urb is completely processed */
2027 priv->rx_processed = 0;
2028
2029 /* if the port is closed stop trying to read */
2030 if (port->port.count > 0) {
2031 /* Continue trying to always read */
2032 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
2033 usb_rcvbulkpipe(port->serial->dev,
2034 port->bulk_in_endpointAddress),
2035 port->read_urb->transfer_buffer,
2036 port->read_urb->transfer_buffer_length,
2037 ftdi_read_bulk_callback, port);
2038
2039 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
2040 if (result)
2041 err("%s - failed resubmitting read urb, error %d",
2042 __func__, result);
2043 }
2044 } /* ftdi_process_read */
2045
2046
2047 static void ftdi_break_ctl(struct tty_struct *tty, int break_state)
2048 {
2049 struct usb_serial_port *port = tty->driver_data;
2050 struct ftdi_private *priv = usb_get_serial_port_data(port);
2051 __u16 urb_value = 0;
2052 char buf[1];
2053
2054 /* break_state = -1 to turn on break, and 0 to turn off break */
2055 /* see drivers/char/tty_io.c to see it used */
2056 /* last_set_data_urb_value NEVER has the break bit set in it */
2057
2058 if (break_state)
2059 urb_value = priv->last_set_data_urb_value | FTDI_SIO_SET_BREAK;
2060 else
2061 urb_value = priv->last_set_data_urb_value;
2062
2063 if (usb_control_msg(port->serial->dev,
2064 usb_sndctrlpipe(port->serial->dev, 0),
2065 FTDI_SIO_SET_DATA_REQUEST,
2066 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2067 urb_value , priv->interface,
2068 buf, 0, WDR_TIMEOUT) < 0) {
2069 err("%s FAILED to enable/disable break state (state was %d)",
2070 __func__, break_state);
2071 }
2072
2073 dbg("%s break state is %d - urb is %d", __func__,
2074 break_state, urb_value);
2075
2076 }
2077
2078
2079 /* old_termios contains the original termios settings and tty->termios contains
2080 * the new setting to be used
2081 * WARNING: set_termios calls this with old_termios in kernel space
2082 */
2083
2084 static void ftdi_set_termios(struct tty_struct *tty,
2085 struct usb_serial_port *port, struct ktermios *old_termios)
2086 { /* ftdi_termios */
2087 struct usb_device *dev = port->serial->dev;
2088 struct ftdi_private *priv = usb_get_serial_port_data(port);
2089 struct ktermios *termios = tty->termios;
2090 unsigned int cflag = termios->c_cflag;
2091 __u16 urb_value; /* will hold the new flags */
2092 char buf[1]; /* Perhaps I should dynamically alloc this? */
2093
2094 /* Added for xon/xoff support */
2095 unsigned int iflag = termios->c_iflag;
2096 unsigned char vstop;
2097 unsigned char vstart;
2098
2099 dbg("%s", __func__);
2100
2101 /* Force baud rate if this device requires it, unless it is set to
2102 B0. */
2103 if (priv->force_baud && ((termios->c_cflag & CBAUD) != B0)) {
2104 dbg("%s: forcing baud rate for this device", __func__);
2105 tty_encode_baud_rate(tty, priv->force_baud,
2106 priv->force_baud);
2107 }
2108
2109 /* Force RTS-CTS if this device requires it. */
2110 if (priv->force_rtscts) {
2111 dbg("%s: forcing rtscts for this device", __func__);
2112 termios->c_cflag |= CRTSCTS;
2113 }
2114
2115 cflag = termios->c_cflag;
2116
2117 /* FIXME -For this cut I don't care if the line is really changing or
2118 not - so just do the change regardless - should be able to
2119 compare old_termios and tty->termios */
2120 /* NOTE These routines can get interrupted by
2121 ftdi_sio_read_bulk_callback - need to examine what this means -
2122 don't see any problems yet */
2123
2124 /* Set number of data bits, parity, stop bits */
2125
2126 termios->c_cflag &= ~CMSPAR;
2127
2128 urb_value = 0;
2129 urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 :
2130 FTDI_SIO_SET_DATA_STOP_BITS_1);
2131 urb_value |= (cflag & PARENB ?
2132 (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD :
2133 FTDI_SIO_SET_DATA_PARITY_EVEN) :
2134 FTDI_SIO_SET_DATA_PARITY_NONE);
2135 if (cflag & CSIZE) {
2136 switch (cflag & CSIZE) {
2137 case CS5: urb_value |= 5; dbg("Setting CS5"); break;
2138 case CS6: urb_value |= 6; dbg("Setting CS6"); break;
2139 case CS7: urb_value |= 7; dbg("Setting CS7"); break;
2140 case CS8: urb_value |= 8; dbg("Setting CS8"); break;
2141 default:
2142 err("CSIZE was set but not CS5-CS8");
2143 }
2144 }
2145
2146 /* This is needed by the break command since it uses the same command
2147 - but is or'ed with this value */
2148 priv->last_set_data_urb_value = urb_value;
2149
2150 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2151 FTDI_SIO_SET_DATA_REQUEST,
2152 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2153 urb_value , priv->interface,
2154 buf, 0, WDR_SHORT_TIMEOUT) < 0) {
2155 err("%s FAILED to set databits/stopbits/parity", __func__);
2156 }
2157
2158 /* Now do the baudrate */
2159 if ((cflag & CBAUD) == B0) {
2160 /* Disable flow control */
2161 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2162 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2163 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2164 0, priv->interface,
2165 buf, 0, WDR_TIMEOUT) < 0) {
2166 err("%s error from disable flowcontrol urb", __func__);
2167 }
2168 /* Drop RTS and DTR */
2169 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2170 } else {
2171 /* set the baudrate determined before */
2172 if (change_speed(tty, port))
2173 err("%s urb failed to set baudrate", __func__);
2174 /* Ensure RTS and DTR are raised when baudrate changed from 0 */
2175 if (!old_termios || (old_termios->c_cflag & CBAUD) == B0)
2176 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2177 }
2178
2179 /* Set flow control */
2180 /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */
2181 if (cflag & CRTSCTS) {
2182 dbg("%s Setting to CRTSCTS flow control", __func__);
2183 if (usb_control_msg(dev,
2184 usb_sndctrlpipe(dev, 0),
2185 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2186 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2187 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface),
2188 buf, 0, WDR_TIMEOUT) < 0) {
2189 err("urb failed to set to rts/cts flow control");
2190 }
2191
2192 } else {
2193 /*
2194 * Xon/Xoff code
2195 *
2196 * Check the IXOFF status in the iflag component of the
2197 * termios structure. If IXOFF is not set, the pre-xon/xoff
2198 * code is executed.
2199 */
2200 if (iflag & IXOFF) {
2201 dbg("%s request to enable xonxoff iflag=%04x",
2202 __func__, iflag);
2203 /* Try to enable the XON/XOFF on the ftdi_sio
2204 * Set the vstart and vstop -- could have been done up
2205 * above where a lot of other dereferencing is done but
2206 * that would be very inefficient as vstart and vstop
2207 * are not always needed.
2208 */
2209 vstart = termios->c_cc[VSTART];
2210 vstop = termios->c_cc[VSTOP];
2211 urb_value = (vstop << 8) | (vstart);
2212
2213 if (usb_control_msg(dev,
2214 usb_sndctrlpipe(dev, 0),
2215 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2216 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2217 urb_value , (FTDI_SIO_XON_XOFF_HS
2218 | priv->interface),
2219 buf, 0, WDR_TIMEOUT) < 0) {
2220 err("urb failed to set to xon/xoff flow control");
2221 }
2222 } else {
2223 /* else clause to only run if cflag ! CRTSCTS and iflag
2224 * ! XOFF. CHECKME Assuming XON/XOFF handled by tty
2225 * stack - not by device */
2226 dbg("%s Turning off hardware flow control", __func__);
2227 if (usb_control_msg(dev,
2228 usb_sndctrlpipe(dev, 0),
2229 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2230 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2231 0, priv->interface,
2232 buf, 0, WDR_TIMEOUT) < 0) {
2233 err("urb failed to clear flow control");
2234 }
2235 }
2236
2237 }
2238 return;
2239 }
2240
2241 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
2242 {
2243 struct usb_serial_port *port = tty->driver_data;
2244 struct ftdi_private *priv = usb_get_serial_port_data(port);
2245 unsigned char buf[2];
2246 int ret;
2247
2248 dbg("%s TIOCMGET", __func__);
2249 switch (priv->chip_type) {
2250 case SIO:
2251 /* Request the status from the device */
2252 ret = usb_control_msg(port->serial->dev,
2253 usb_rcvctrlpipe(port->serial->dev, 0),
2254 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2255 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2256 0, 0,
2257 buf, 1, WDR_TIMEOUT);
2258 if (ret < 0) {
2259 err("%s Could not get modem status of device - err: %d", __func__,
2260 ret);
2261 return ret;
2262 }
2263 break;
2264 case FT8U232AM:
2265 case FT232BM:
2266 case FT2232C:
2267 case FT232RL:
2268 /* the 8U232AM returns a two byte value (the sio is a 1 byte
2269 value) - in the same format as the data returned from the in
2270 point */
2271 ret = usb_control_msg(port->serial->dev,
2272 usb_rcvctrlpipe(port->serial->dev, 0),
2273 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2274 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2275 0, priv->interface,
2276 buf, 2, WDR_TIMEOUT);
2277 if (ret < 0) {
2278 err("%s Could not get modem status of device - err: %d", __func__,
2279 ret);
2280 return ret;
2281 }
2282 break;
2283 default:
2284 return -EFAULT;
2285 break;
2286 }
2287
2288 return (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
2289 (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) |
2290 (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) |
2291 (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0) |
2292 priv->last_dtr_rts;
2293 }
2294
2295 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
2296 unsigned int set, unsigned int clear)
2297 {
2298 struct usb_serial_port *port = tty->driver_data;
2299 dbg("%s TIOCMSET", __func__);
2300 return update_mctrl(port, set, clear);
2301 }
2302
2303
2304 static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
2305 unsigned int cmd, unsigned long arg)
2306 {
2307 struct usb_serial_port *port = tty->driver_data;
2308 struct ftdi_private *priv = usb_get_serial_port_data(port);
2309
2310 dbg("%s cmd 0x%04x", __func__, cmd);
2311
2312 /* Based on code from acm.c and others */
2313 switch (cmd) {
2314
2315 case TIOCGSERIAL: /* gets serial port data */
2316 return get_serial_info(port,
2317 (struct serial_struct __user *) arg);
2318
2319 case TIOCSSERIAL: /* sets serial port data */
2320 return set_serial_info(tty, port,
2321 (struct serial_struct __user *) arg);
2322
2323 /*
2324 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
2325 * - mask passed in arg for lines of interest
2326 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
2327 * Caller should use TIOCGICOUNT to see which one it was.
2328 *
2329 * This code is borrowed from linux/drivers/char/serial.c
2330 */
2331 case TIOCMIWAIT:
2332 while (priv != NULL) {
2333 interruptible_sleep_on(&priv->delta_msr_wait);
2334 /* see if a signal did it */
2335 if (signal_pending(current))
2336 return -ERESTARTSYS;
2337 else {
2338 char diff = priv->diff_status;
2339
2340 if (diff == 0)
2341 return -EIO; /* no change => error */
2342
2343 /* Consume all events */
2344 priv->diff_status = 0;
2345
2346 /* Return 0 if caller wanted to know about
2347 these bits */
2348 if (((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) ||
2349 ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) ||
2350 ((arg & TIOCM_CD) && (diff & FTDI_RS0_RLSD)) ||
2351 ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS))) {
2352 return 0;
2353 }
2354 /*
2355 * Otherwise caller can't care less about what
2356 * happened,and so we continue to wait for more
2357 * events.
2358 */
2359 }
2360 }
2361 return 0;
2362 default:
2363 break;
2364 }
2365 /* This is not necessarily an error - turns out the higher layers
2366 * will do some ioctls themselves (see comment above)
2367 */
2368 dbg("%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h", __func__, cmd);
2369 return -ENOIOCTLCMD;
2370 }
2371
2372 static void ftdi_throttle(struct tty_struct *tty)
2373 {
2374 struct usb_serial_port *port = tty->driver_data;
2375 struct ftdi_private *priv = usb_get_serial_port_data(port);
2376 unsigned long flags;
2377
2378 dbg("%s - port %d", __func__, port->number);
2379
2380 spin_lock_irqsave(&priv->rx_lock, flags);
2381 priv->rx_flags |= THROTTLED;
2382 spin_unlock_irqrestore(&priv->rx_lock, flags);
2383 }
2384
2385
2386 static void ftdi_unthrottle(struct tty_struct *tty)
2387 {
2388 struct usb_serial_port *port = tty->driver_data;
2389 struct ftdi_private *priv = usb_get_serial_port_data(port);
2390 int actually_throttled;
2391 unsigned long flags;
2392
2393 dbg("%s - port %d", __func__, port->number);
2394
2395 spin_lock_irqsave(&priv->rx_lock, flags);
2396 actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED;
2397 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
2398 spin_unlock_irqrestore(&priv->rx_lock, flags);
2399
2400 if (actually_throttled)
2401 schedule_delayed_work(&priv->rx_work, 0);
2402 }
2403
2404 static int __init ftdi_init(void)
2405 {
2406 int retval;
2407
2408 dbg("%s", __func__);
2409 if (vendor > 0 && product > 0) {
2410 /* Add user specified VID/PID to reserved element of table. */
2411 int i;
2412 for (i = 0; id_table_combined[i].idVendor; i++)
2413 ;
2414 id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
2415 id_table_combined[i].idVendor = vendor;
2416 id_table_combined[i].idProduct = product;
2417 }
2418 retval = usb_serial_register(&ftdi_sio_device);
2419 if (retval)
2420 goto failed_sio_register;
2421 retval = usb_register(&ftdi_driver);
2422 if (retval)
2423 goto failed_usb_register;
2424
2425 info(DRIVER_VERSION ":" DRIVER_DESC);
2426 return 0;
2427 failed_usb_register:
2428 usb_serial_deregister(&ftdi_sio_device);
2429 failed_sio_register:
2430 return retval;
2431 }
2432
2433
2434 static void __exit ftdi_exit(void)
2435 {
2436
2437 dbg("%s", __func__);
2438
2439 usb_deregister(&ftdi_driver);
2440 usb_serial_deregister(&ftdi_sio_device);
2441
2442 }
2443
2444
2445 module_init(ftdi_init);
2446 module_exit(ftdi_exit);
2447
2448 MODULE_AUTHOR(DRIVER_AUTHOR);
2449 MODULE_DESCRIPTION(DRIVER_DESC);
2450 MODULE_LICENSE("GPL");
2451
2452 module_param(debug, bool, S_IRUGO | S_IWUSR);
2453 MODULE_PARM_DESC(debug, "Debug enabled or not");
2454 module_param(vendor, ushort, 0);
2455 MODULE_PARM_DESC(vendor, "User specified vendor ID (default="
2456 __MODULE_STRING(FTDI_VID)")");
2457 module_param(product, ushort, 0);
2458 MODULE_PARM_DESC(vendor, "User specified product ID");
2459
Linux kernel - Deliverables
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