?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Fix oops on close of hot-unplugged FTDI serial converter
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / usb / serial / ftdi_sio.c
blob4423875b00169e9f219832fff57bcb7ce45bf299
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 struct kref kref;
60 ftdi_chip_type_t chip_type;
61 /* type of device, either SIO or FT8U232AM */
62 int baud_base; /* baud base clock for divisor setting */
63 int custom_divisor; /* custom_divisor kludge, this is for
64 baud_base (different from what goes to the
65 chip!) */
66 __u16 last_set_data_urb_value ;
67 /* the last data state set - needed for doing
68 * a break
69 */
70 int write_offset; /* This is the offset in the usb data block to
71 * write the serial data - it varies between
72 * devices
73 */
74 int flags; /* some ASYNC_xxxx flags are supported */
75 unsigned long last_dtr_rts; /* saved modem control outputs */
76 wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
77 char prev_status, diff_status; /* Used for TIOCMIWAIT */
78 __u8 rx_flags; /* receive state flags (throttling) */
79 spinlock_t rx_lock; /* spinlock for receive state */
80 struct delayed_work rx_work;
81 struct usb_serial_port *port;
82 int rx_processed;
83 unsigned long rx_bytes;
84
85 __u16 interface; /* FT2232C port interface (0 for FT232/245) */
86
87 speed_t force_baud; /* if non-zero, force the baud rate to
88 this value */
89 int force_rtscts; /* if non-zero, force RTS-CTS to always
90 be enabled */
91
92 spinlock_t tx_lock; /* spinlock for transmit state */
93 unsigned long tx_bytes;
94 unsigned long tx_outstanding_bytes;
95 unsigned long tx_outstanding_urbs;
96 };
97
98 /* struct ftdi_sio_quirk is used by devices requiring special attention. */
99 struct ftdi_sio_quirk {
100 int (*probe)(struct usb_serial *);
101 /* Special settings for probed ports. */
102 void (*port_probe)(struct ftdi_private *);
103 };
104
105 static int ftdi_jtag_probe(struct usb_serial *serial);
106 static int ftdi_mtxorb_hack_setup(struct usb_serial *serial);
107 static void ftdi_USB_UIRT_setup(struct ftdi_private *priv);
108 static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv);
109
110 static struct ftdi_sio_quirk ftdi_jtag_quirk = {
111 .probe = ftdi_jtag_probe,
112 };
113
114 static struct ftdi_sio_quirk ftdi_mtxorb_hack_quirk = {
115 .probe = ftdi_mtxorb_hack_setup,
116 };
117
118 static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = {
119 .port_probe = ftdi_USB_UIRT_setup,
120 };
121
122 static struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = {
123 .port_probe = ftdi_HE_TIRA1_setup,
124 };
125
126 /*
127 * The 8U232AM has the same API as the sio except for:
128 * - it can support MUCH higher baudrates; up to:
129 * o 921600 for RS232 and 2000000 for RS422/485 at 48MHz
130 * o 230400 at 12MHz
131 * so .. 8U232AM's baudrate setting codes are different
132 * - it has a two byte status code.
133 * - it returns characters every 16ms (the FTDI does it every 40ms)
134 *
135 * the bcdDevice value is used to differentiate FT232BM and FT245BM from
136 * the earlier FT8U232AM and FT8U232BM. For now, include all known VID/PID
137 * combinations in both tables.
138 * FIXME: perhaps bcdDevice can also identify 12MHz FT8U232AM devices,
139 * but I don't know if those ever went into mass production. [Ian Abbott]
140 */
141
142
143
144 static struct usb_device_id id_table_combined [] = {
145 { USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) },
146 { USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) },
147 { USB_DEVICE(FTDI_VID, FTDI_CANDAPTER_PID) },
148 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_0_PID) },
149 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_1_PID) },
150 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_2_PID) },
151 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_3_PID) },
152 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_4_PID) },
153 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_5_PID) },
154 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_6_PID) },
155 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_7_PID) },
156 { USB_DEVICE(FTDI_VID, FTDI_ACTZWAVE_PID) },
157 { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) },
158 { USB_DEVICE(FTDI_VID, FTDI_IPLUS_PID) },
159 { USB_DEVICE(FTDI_VID, FTDI_IPLUS2_PID) },
160 { USB_DEVICE(FTDI_VID, FTDI_DMX4ALL) },
161 { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) },
162 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) },
163 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) },
164 { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) },
165 { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) },
166 { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) },
167 { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) },
168 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) },
169 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) },
170 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) },
171 { USB_DEVICE(FTDI_VID, FTDI_SPROG_II) },
172 { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) },
173 { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) },
174 { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) },
175 { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) },
176 { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) },
177 { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) },
178 { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) },
179 { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) },
180 { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) },
181 { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) },
182 { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) },
183 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) },
184 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) },
185 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) },
186 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) },
187 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) },
188 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) },
189 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) },
190 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0100_PID) },
191 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0101_PID) },
192 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0102_PID) },
193 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0103_PID) },
194 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0104_PID) },
195 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0105_PID) },
196 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0106_PID) },
197 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0107_PID) },
198 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0108_PID) },
199 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0109_PID) },
200 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010A_PID) },
201 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010B_PID) },
202 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010C_PID) },
203 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010D_PID) },
204 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010E_PID) },
205 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010F_PID) },
206 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0110_PID) },
207 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0111_PID) },
208 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0112_PID) },
209 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0113_PID) },
210 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0114_PID) },
211 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0115_PID) },
212 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0116_PID) },
213 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0117_PID) },
214 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0118_PID) },
215 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0119_PID) },
216 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011A_PID) },
217 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011B_PID) },
218 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011C_PID) },
219 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011D_PID) },
220 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011E_PID) },
221 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011F_PID) },
222 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0120_PID) },
223 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0121_PID) },
224 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0122_PID) },
225 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0123_PID) },
226 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0124_PID) },
227 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0125_PID) },
228 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0126_PID) },
229 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0127_PID),
230 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
231 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0128_PID) },
232 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0129_PID) },
233 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012A_PID) },
234 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012B_PID) },
235 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012C_PID),
236 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
237 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012D_PID) },
238 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012E_PID) },
239 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012F_PID) },
240 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0130_PID) },
241 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0131_PID) },
242 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0132_PID) },
243 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0133_PID) },
244 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0134_PID) },
245 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0135_PID) },
246 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0136_PID) },
247 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0137_PID) },
248 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0138_PID) },
249 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0139_PID) },
250 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013A_PID) },
251 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013B_PID) },
252 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013C_PID) },
253 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013D_PID) },
254 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013E_PID) },
255 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013F_PID) },
256 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0140_PID) },
257 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0141_PID) },
258 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0142_PID) },
259 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0143_PID) },
260 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0144_PID) },
261 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0145_PID) },
262 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0146_PID) },
263 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0147_PID) },
264 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0148_PID) },
265 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0149_PID) },
266 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014A_PID) },
267 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014B_PID) },
268 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014C_PID) },
269 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014D_PID) },
270 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014E_PID) },
271 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014F_PID) },
272 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0150_PID) },
273 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0151_PID) },
274 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0152_PID) },
275 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0153_PID),
276 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
277 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0154_PID),
278 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
279 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0155_PID),
280 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
281 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0156_PID),
282 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
283 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0157_PID),
284 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
285 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0158_PID),
286 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
287 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0159_PID) },
288 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015A_PID) },
289 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015B_PID) },
290 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015C_PID) },
291 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015D_PID) },
292 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015E_PID) },
293 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015F_PID) },
294 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0160_PID) },
295 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0161_PID) },
296 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0162_PID) },
297 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0163_PID) },
298 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0164_PID) },
299 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0165_PID) },
300 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0166_PID) },
301 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0167_PID) },
302 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0168_PID) },
303 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0169_PID) },
304 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016A_PID) },
305 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016B_PID) },
306 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016C_PID) },
307 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016D_PID) },
308 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016E_PID) },
309 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016F_PID) },
310 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0170_PID) },
311 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0171_PID) },
312 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0172_PID) },
313 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0173_PID) },
314 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0174_PID) },
315 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0175_PID) },
316 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0176_PID) },
317 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0177_PID) },
318 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0178_PID) },
319 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0179_PID) },
320 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017A_PID) },
321 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017B_PID) },
322 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017C_PID) },
323 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017D_PID) },
324 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017E_PID) },
325 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017F_PID) },
326 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0180_PID) },
327 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0181_PID) },
328 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0182_PID) },
329 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0183_PID) },
330 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0184_PID) },
331 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0185_PID) },
332 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0186_PID) },
333 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0187_PID) },
334 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0188_PID) },
335 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0189_PID) },
336 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018A_PID) },
337 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018B_PID) },
338 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018C_PID) },
339 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018D_PID) },
340 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018E_PID) },
341 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018F_PID) },
342 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0190_PID) },
343 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0191_PID) },
344 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0192_PID) },
345 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0193_PID) },
346 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0194_PID) },
347 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0195_PID) },
348 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0196_PID) },
349 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0197_PID) },
350 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0198_PID) },
351 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0199_PID) },
352 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019A_PID) },
353 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019B_PID) },
354 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019C_PID) },
355 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019D_PID) },
356 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019E_PID) },
357 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019F_PID) },
358 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A0_PID) },
359 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A1_PID) },
360 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A2_PID) },
361 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A3_PID) },
362 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A4_PID) },
363 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A5_PID) },
364 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A6_PID) },
365 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A7_PID) },
366 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A8_PID) },
367 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A9_PID) },
368 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AA_PID) },
369 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AB_PID) },
370 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AC_PID) },
371 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AD_PID) },
372 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AE_PID) },
373 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AF_PID) },
374 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B0_PID) },
375 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B1_PID) },
376 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B2_PID) },
377 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B3_PID) },
378 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B4_PID) },
379 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B5_PID) },
380 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B6_PID) },
381 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B7_PID) },
382 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B8_PID) },
383 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B9_PID) },
384 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BA_PID) },
385 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BB_PID) },
386 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BC_PID) },
387 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BD_PID) },
388 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BE_PID) },
389 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BF_PID) },
390 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C0_PID) },
391 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C1_PID) },
392 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C2_PID) },
393 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C3_PID) },
394 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C4_PID) },
395 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C5_PID) },
396 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C6_PID) },
397 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C7_PID) },
398 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C8_PID) },
399 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C9_PID) },
400 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CA_PID) },
401 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CB_PID) },
402 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CC_PID) },
403 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CD_PID) },
404 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CE_PID) },
405 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CF_PID) },
406 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D0_PID) },
407 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D1_PID) },
408 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D2_PID) },
409 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D3_PID) },
410 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D4_PID) },
411 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D5_PID) },
412 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D6_PID) },
413 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D7_PID) },
414 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D8_PID) },
415 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D9_PID) },
416 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DA_PID) },
417 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DB_PID) },
418 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DC_PID) },
419 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DD_PID) },
420 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DE_PID) },
421 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DF_PID) },
422 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E0_PID) },
423 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E1_PID) },
424 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E2_PID) },
425 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E3_PID) },
426 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E4_PID) },
427 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E5_PID) },
428 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E6_PID) },
429 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E7_PID) },
430 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E8_PID) },
431 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E9_PID) },
432 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EA_PID) },
433 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EB_PID) },
434 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EC_PID) },
435 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01ED_PID) },
436 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EE_PID) },
437 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EF_PID) },
438 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F0_PID) },
439 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F1_PID) },
440 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F2_PID) },
441 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F3_PID) },
442 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F4_PID) },
443 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F5_PID) },
444 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F6_PID) },
445 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F7_PID) },
446 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F8_PID) },
447 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F9_PID) },
448 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FA_PID) },
449 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FB_PID) },
450 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FC_PID) },
451 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FD_PID) },
452 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FE_PID) },
453 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FF_PID) },
454 { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) },
455 { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) },
456 { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) },
457 { USB_DEVICE(FTDI_VID, FTDI_USBX_707_PID) },
458 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) },
459 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) },
460 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) },
461 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) },
462 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2106_PID) },
463 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) },
464 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) },
465 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) },
466 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) },
467 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) },
468 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) },
469 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) },
470 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) },
471 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) },
472 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) },
473 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) },
474 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) },
475 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) },
476 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) },
477 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) },
478 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) },
479 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) },
480 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) },
481 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) },
482 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) },
483 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) },
484 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) },
485 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) },
486 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) },
487 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) },
488 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) },
489 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) },
490 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) },
491 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) },
492 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) },
493 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) },
494 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) },
495 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) },
496 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) },
497 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) },
498 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) },
499 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) },
500 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) },
501 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) },
502 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) },
503 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) },
504 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) },
505 { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) },
506 { USB_DEVICE(OCT_VID, OCT_US101_PID) },
507 { USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID),
508 .driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk },
509 { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID),
510 .driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk },
511 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) },
512 { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) },
513 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) },
514 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) },
515 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) },
516 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) },
517 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) },
518 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) },
519 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) },
520 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) },
521 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) },
522 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) },
523 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) },
524 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) },
525 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) },
526 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) },
527 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) },
528 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) },
529 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) },
530 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) },
531 { USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) },
532 { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) },
533 { USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) },
534 { USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) },
535 { USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) },
536 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) },
537 { USB_DEVICE(FTDI_VID, FTDI_IBS_US485_PID) },
538 { USB_DEVICE(FTDI_VID, FTDI_IBS_PICPRO_PID) },
539 { USB_DEVICE(FTDI_VID, FTDI_IBS_PCMCIA_PID) },
540 { USB_DEVICE(FTDI_VID, FTDI_IBS_PK1_PID) },
541 { USB_DEVICE(FTDI_VID, FTDI_IBS_RS232MON_PID) },
542 { USB_DEVICE(FTDI_VID, FTDI_IBS_APP70_PID) },
543 { USB_DEVICE(FTDI_VID, FTDI_IBS_PEDO_PID) },
544 { USB_DEVICE(FTDI_VID, FTDI_IBS_PROD_PID) },
545 /*
546 * Due to many user requests for multiple ELV devices we enable
547 * them by default.
548 */
549 { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) },
550 { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) },
551 { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) },
552 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) },
553 { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) },
554 { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) },
555 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) },
556 { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) },
557 { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) },
558 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) },
559 { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) },
560 { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) },
561 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) },
562 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) },
563 { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) },
564 { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) },
565 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) },
566 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) },
567 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1010PC_PID) },
568 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) },
569 { USB_DEVICE(FTDI_VID, FTDI_ELV_HS485_PID) },
570 { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) },
571 { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) },
572 { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) },
573 { USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) },
574 { USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) },
575 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) },
576 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) },
577 { USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) },
578 { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) },
579 { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) },
580 { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) },
581 { USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) },
582 { USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) },
583 { USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) },
584 { USB_DEVICE(FTDI_VID, FTDI_OCEANIC_PID) },
585 { USB_DEVICE(TTI_VID, TTI_QL355P_PID) },
586 { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) },
587 { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) },
588 { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) },
589 { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) },
590 { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) },
591 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) },
592 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) },
593 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) },
594 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) },
595 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) },
596 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) },
597 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) },
598 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) },
599 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) },
600 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) },
601 { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
602 { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) },
603 { USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) },
604 { USB_DEVICE(FTDI_VID, FTDI_MHAM_YS_PID) },
605 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) },
606 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) },
607 { USB_DEVICE(FTDI_VID, FTDI_MHAM_IC_PID) },
608 { USB_DEVICE(FTDI_VID, FTDI_MHAM_DB9_PID) },
609 { USB_DEVICE(FTDI_VID, FTDI_MHAM_RS232_PID) },
610 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y9_PID) },
611 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) },
612 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) },
613 { USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) },
614 { USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) },
615 { USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) },
616 { USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) },
617 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) },
618 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) },
619 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) },
620 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HRC_PID) },
621 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16IC_PID) },
622 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) },
623 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) },
624 { USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) },
625 { USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) },
626 { USB_DEVICE(FTDI_VID, FTDI_ECLO_COM_1WIRE_PID) },
627 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) },
628 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) },
629 { USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) },
630 { USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) },
631 { USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) },
632 { USB_DEVICE(ICOM_ID1_VID, ICOM_ID1_PID) },
633 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_TMU_PID) },
634 { USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) },
635 { USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) },
636 { USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) },
637 { USB_DEVICE(TESTO_VID, TESTO_USB_INTERFACE_PID) },
638 { USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) },
639 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) },
640 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) },
641 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) },
642 { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) },
643 { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
644 { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) },
645 { USB_DEVICE(FTDI_VID, FTDI_PHI_FISCO_PID) },
646 { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) },
647 { USB_DEVICE(FTDI_VID, FTDI_ELSTER_UNICOM_PID) },
648 { USB_DEVICE(FTDI_VID, FTDI_PROPOX_JTAGCABLEII_PID) },
649 { USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID),
650 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
651 { USB_DEVICE(FIC_VID, FIC_NEO1973_DEBUG_PID),
652 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
653 { USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID),
654 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
655 { USB_DEVICE(FTDI_VID, LMI_LM3S_DEVEL_BOARD_PID),
656 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
657 { USB_DEVICE(FTDI_VID, LMI_LM3S_EVAL_BOARD_PID),
658 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
659 { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
660 { USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) },
661 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO4x4_PID) },
662 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DGQG_PID) },
663 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DUSB_PID) },
664 { USB_DEVICE(ALTI2_VID, ALTI2_N3_PID) },
665 { USB_DEVICE(FTDI_VID, DIEBOLD_BCS_SE923_PID) },
666 { USB_DEVICE(FTDI_VID, FTDI_NDI_HUC_PID) },
667 { USB_DEVICE(ATMEL_VID, STK541_PID) },
668 { USB_DEVICE(DE_VID, STB_PID) },
669 { USB_DEVICE(DE_VID, WHT_PID) },
670 { USB_DEVICE(ADI_VID, ADI_GNICE_PID),
671 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
672 { USB_DEVICE(JETI_VID, JETI_SPC1201_PID) },
673 { }, /* Optional parameter entry */
674 { } /* Terminating entry */
675 };
676
677 MODULE_DEVICE_TABLE(usb, id_table_combined);
678
679 static struct usb_driver ftdi_driver = {
680 .name = "ftdi_sio",
681 .probe = usb_serial_probe,
682 .disconnect = usb_serial_disconnect,
683 .id_table = id_table_combined,
684 .no_dynamic_id = 1,
685 };
686
687 static const char *ftdi_chip_name[] = {
688 [SIO] = "SIO", /* the serial part of FT8U100AX */
689 [FT8U232AM] = "FT8U232AM",
690 [FT232BM] = "FT232BM",
691 [FT2232C] = "FT2232C",
692 [FT232RL] = "FT232RL",
693 };
694
695
696 /* Constants for read urb and write urb */
697 #define BUFSZ 512
698 #define PKTSZ 64
699
700 /* rx_flags */
701 #define THROTTLED 0x01
702 #define ACTUALLY_THROTTLED 0x02
703
704 /* Used for TIOCMIWAIT */
705 #define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD)
706 #define FTDI_STATUS_B1_MASK (FTDI_RS_BI)
707 /* End TIOCMIWAIT */
708
709 #define FTDI_IMPL_ASYNC_FLAGS = (ASYNC_SPD_HI | ASYNC_SPD_VHI \
710 | ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP)
711
712 /* function prototypes for a FTDI serial converter */
713 static int ftdi_sio_probe(struct usb_serial *serial,
714 const struct usb_device_id *id);
715 static void ftdi_shutdown(struct usb_serial *serial);
716 static int ftdi_sio_port_probe(struct usb_serial_port *port);
717 static int ftdi_sio_port_remove(struct usb_serial_port *port);
718 static int ftdi_open(struct tty_struct *tty,
719 struct usb_serial_port *port, struct file *filp);
720 static void ftdi_close(struct tty_struct *tty,
721 struct usb_serial_port *port, struct file *filp);
722 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
723 const unsigned char *buf, int count);
724 static int ftdi_write_room(struct tty_struct *tty);
725 static int ftdi_chars_in_buffer(struct tty_struct *tty);
726 static void ftdi_write_bulk_callback(struct urb *urb);
727 static void ftdi_read_bulk_callback(struct urb *urb);
728 static void ftdi_process_read(struct work_struct *work);
729 static void ftdi_set_termios(struct tty_struct *tty,
730 struct usb_serial_port *port, struct ktermios *old);
731 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file);
732 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
733 unsigned int set, unsigned int clear);
734 static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
735 unsigned int cmd, unsigned long arg);
736 static void ftdi_break_ctl(struct tty_struct *tty, int break_state);
737 static void ftdi_throttle(struct tty_struct *tty);
738 static void ftdi_unthrottle(struct tty_struct *tty);
739
740 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base);
741 static unsigned short int ftdi_232am_baud_to_divisor(int baud);
742 static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base);
743 static __u32 ftdi_232bm_baud_to_divisor(int baud);
744
745 static struct usb_serial_driver ftdi_sio_device = {
746 .driver = {
747 .owner = THIS_MODULE,
748 .name = "ftdi_sio",
749 },
750 .description = "FTDI USB Serial Device",
751 .usb_driver = &ftdi_driver ,
752 .id_table = id_table_combined,
753 .num_ports = 1,
754 .probe = ftdi_sio_probe,
755 .port_probe = ftdi_sio_port_probe,
756 .port_remove = ftdi_sio_port_remove,
757 .open = ftdi_open,
758 .close = ftdi_close,
759 .throttle = ftdi_throttle,
760 .unthrottle = ftdi_unthrottle,
761 .write = ftdi_write,
762 .write_room = ftdi_write_room,
763 .chars_in_buffer = ftdi_chars_in_buffer,
764 .read_bulk_callback = ftdi_read_bulk_callback,
765 .write_bulk_callback = ftdi_write_bulk_callback,
766 .tiocmget = ftdi_tiocmget,
767 .tiocmset = ftdi_tiocmset,
768 .ioctl = ftdi_ioctl,
769 .set_termios = ftdi_set_termios,
770 .break_ctl = ftdi_break_ctl,
771 .shutdown = ftdi_shutdown,
772 };
773
774
775 #define WDR_TIMEOUT 5000 /* default urb timeout */
776 #define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */
777
778 /* High and low are for DTR, RTS etc etc */
779 #define HIGH 1
780 #define LOW 0
781
782 /* number of outstanding urbs to prevent userspace DoS from happening */
783 #define URB_UPPER_LIMIT 42
784
785 /*
786 * ***************************************************************************
787 * Utility functions
788 * ***************************************************************************
789 */
790
791 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base)
792 {
793 unsigned short int divisor;
794 /* divisor shifted 3 bits to the left */
795 int divisor3 = base / 2 / baud;
796 if ((divisor3 & 0x7) == 7)
797 divisor3++; /* round x.7/8 up to x+1 */
798 divisor = divisor3 >> 3;
799 divisor3 &= 0x7;
800 if (divisor3 == 1)
801 divisor |= 0xc000;
802 else if (divisor3 >= 4)
803 divisor |= 0x4000;
804 else if (divisor3 != 0)
805 divisor |= 0x8000;
806 else if (divisor == 1)
807 divisor = 0; /* special case for maximum baud rate */
808 return divisor;
809 }
810
811 static unsigned short int ftdi_232am_baud_to_divisor(int baud)
812 {
813 return ftdi_232am_baud_base_to_divisor(baud, 48000000);
814 }
815
816 static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base)
817 {
818 static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
819 __u32 divisor;
820 /* divisor shifted 3 bits to the left */
821 int divisor3 = base / 2 / baud;
822 divisor = divisor3 >> 3;
823 divisor |= (__u32)divfrac[divisor3 & 0x7] << 14;
824 /* Deal with special cases for highest baud rates. */
825 if (divisor == 1)
826 divisor = 0;
827 else if (divisor == 0x4001)
828 divisor = 1;
829 return divisor;
830 }
831
832 static __u32 ftdi_232bm_baud_to_divisor(int baud)
833 {
834 return ftdi_232bm_baud_base_to_divisor(baud, 48000000);
835 }
836
837 #define set_mctrl(port, set) update_mctrl((port), (set), 0)
838 #define clear_mctrl(port, clear) update_mctrl((port), 0, (clear))
839
840 static int update_mctrl(struct usb_serial_port *port, unsigned int set,
841 unsigned int clear)
842 {
843 struct ftdi_private *priv = usb_get_serial_port_data(port);
844 char *buf;
845 unsigned urb_value;
846 int rv;
847
848 if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
849 dbg("%s - DTR|RTS not being set|cleared", __func__);
850 return 0; /* no change */
851 }
852
853 buf = kmalloc(1, GFP_NOIO);
854 if (!buf)
855 return -ENOMEM;
856
857 clear &= ~set; /* 'set' takes precedence over 'clear' */
858 urb_value = 0;
859 if (clear & TIOCM_DTR)
860 urb_value |= FTDI_SIO_SET_DTR_LOW;
861 if (clear & TIOCM_RTS)
862 urb_value |= FTDI_SIO_SET_RTS_LOW;
863 if (set & TIOCM_DTR)
864 urb_value |= FTDI_SIO_SET_DTR_HIGH;
865 if (set & TIOCM_RTS)
866 urb_value |= FTDI_SIO_SET_RTS_HIGH;
867 rv = usb_control_msg(port->serial->dev,
868 usb_sndctrlpipe(port->serial->dev, 0),
869 FTDI_SIO_SET_MODEM_CTRL_REQUEST,
870 FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
871 urb_value, priv->interface,
872 buf, 0, WDR_TIMEOUT);
873
874 kfree(buf);
875 if (rv < 0) {
876 dbg("%s Error from MODEM_CTRL urb: DTR %s, RTS %s",
877 __func__,
878 (set & TIOCM_DTR) ? "HIGH" :
879 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
880 (set & TIOCM_RTS) ? "HIGH" :
881 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
882 } else {
883 dbg("%s - DTR %s, RTS %s", __func__,
884 (set & TIOCM_DTR) ? "HIGH" :
885 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
886 (set & TIOCM_RTS) ? "HIGH" :
887 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
888 /* FIXME: locking on last_dtr_rts */
889 priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set;
890 }
891 return rv;
892 }
893
894
895 static __u32 get_ftdi_divisor(struct tty_struct *tty,
896 struct usb_serial_port *port)
897 { /* get_ftdi_divisor */
898 struct ftdi_private *priv = usb_get_serial_port_data(port);
899 __u32 div_value = 0;
900 int div_okay = 1;
901 int baud;
902
903 /*
904 * The logic involved in setting the baudrate can be cleanly split into
905 * 3 steps.
906 * 1. Standard baud rates are set in tty->termios->c_cflag
907 * 2. If these are not enough, you can set any speed using alt_speed as
908 * follows:
909 * - set tty->termios->c_cflag speed to B38400
910 * - set your real speed in tty->alt_speed; it gets ignored when
911 * alt_speed==0, (or)
912 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
913 * follows:
914 * flags & ASYNC_SPD_MASK == ASYNC_SPD_[HI, VHI, SHI, WARP],
915 * this just sets alt_speed to (HI: 57600, VHI: 115200,
916 * SHI: 230400, WARP: 460800)
917 * ** Steps 1, 2 are done courtesy of tty_get_baud_rate
918 * 3. You can also set baud rate by setting custom divisor as follows
919 * - set tty->termios->c_cflag speed to B38400
920 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
921 * follows:
922 * o flags & ASYNC_SPD_MASK == ASYNC_SPD_CUST
923 * o custom_divisor set to baud_base / your_new_baudrate
924 * ** Step 3 is done courtesy of code borrowed from serial.c
925 * I should really spend some time and separate + move this common
926 * code to serial.c, it is replicated in nearly every serial driver
927 * you see.
928 */
929
930 /* 1. Get the baud rate from the tty settings, this observes
931 alt_speed hack */
932
933 baud = tty_get_baud_rate(tty);
934 dbg("%s - tty_get_baud_rate reports speed %d", __func__, baud);
935
936 /* 2. Observe async-compatible custom_divisor hack, update baudrate
937 if needed */
938
939 if (baud == 38400 &&
940 ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
941 (priv->custom_divisor)) {
942 baud = priv->baud_base / priv->custom_divisor;
943 dbg("%s - custom divisor %d sets baud rate to %d",
944 __func__, priv->custom_divisor, baud);
945 }
946
947 /* 3. Convert baudrate to device-specific divisor */
948
949 if (!baud)
950 baud = 9600;
951 switch (priv->chip_type) {
952 case SIO: /* SIO chip */
953 switch (baud) {
954 case 300: div_value = ftdi_sio_b300; break;
955 case 600: div_value = ftdi_sio_b600; break;
956 case 1200: div_value = ftdi_sio_b1200; break;
957 case 2400: div_value = ftdi_sio_b2400; break;
958 case 4800: div_value = ftdi_sio_b4800; break;
959 case 9600: div_value = ftdi_sio_b9600; break;
960 case 19200: div_value = ftdi_sio_b19200; break;
961 case 38400: div_value = ftdi_sio_b38400; break;
962 case 57600: div_value = ftdi_sio_b57600; break;
963 case 115200: div_value = ftdi_sio_b115200; break;
964 } /* baud */
965 if (div_value == 0) {
966 dbg("%s - Baudrate (%d) requested is not supported",
967 __func__, baud);
968 div_value = ftdi_sio_b9600;
969 baud = 9600;
970 div_okay = 0;
971 }
972 break;
973 case FT8U232AM: /* 8U232AM chip */
974 if (baud <= 3000000) {
975 div_value = ftdi_232am_baud_to_divisor(baud);
976 } else {
977 dbg("%s - Baud rate too high!", __func__);
978 baud = 9600;
979 div_value = ftdi_232am_baud_to_divisor(9600);
980 div_okay = 0;
981 }
982 break;
983 case FT232BM: /* FT232BM chip */
984 case FT2232C: /* FT2232C chip */
985 case FT232RL:
986 if (baud <= 3000000) {
987 div_value = ftdi_232bm_baud_to_divisor(baud);
988 } else {
989 dbg("%s - Baud rate too high!", __func__);
990 div_value = ftdi_232bm_baud_to_divisor(9600);
991 div_okay = 0;
992 baud = 9600;
993 }
994 break;
995 } /* priv->chip_type */
996
997 if (div_okay) {
998 dbg("%s - Baud rate set to %d (divisor 0x%lX) on chip %s",
999 __func__, baud, (unsigned long)div_value,
1000 ftdi_chip_name[priv->chip_type]);
1001 }
1002
1003 tty_encode_baud_rate(tty, baud, baud);
1004 return div_value;
1005 }
1006
1007 static int change_speed(struct tty_struct *tty, struct usb_serial_port *port)
1008 {
1009 struct ftdi_private *priv = usb_get_serial_port_data(port);
1010 char *buf;
1011 __u16 urb_value;
1012 __u16 urb_index;
1013 __u32 urb_index_value;
1014 int rv;
1015
1016 buf = kmalloc(1, GFP_NOIO);
1017 if (!buf)
1018 return -ENOMEM;
1019
1020 urb_index_value = get_ftdi_divisor(tty, port);
1021 urb_value = (__u16)urb_index_value;
1022 urb_index = (__u16)(urb_index_value >> 16);
1023 if (priv->interface) { /* FT2232C */
1024 urb_index = (__u16)((urb_index << 8) | priv->interface);
1025 }
1026
1027 rv = usb_control_msg(port->serial->dev,
1028 usb_sndctrlpipe(port->serial->dev, 0),
1029 FTDI_SIO_SET_BAUDRATE_REQUEST,
1030 FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
1031 urb_value, urb_index,
1032 buf, 0, WDR_SHORT_TIMEOUT);
1033
1034 kfree(buf);
1035 return rv;
1036 }
1037
1038
1039
1040 static int get_serial_info(struct usb_serial_port *port,
1041 struct serial_struct __user *retinfo)
1042 {
1043 struct ftdi_private *priv = usb_get_serial_port_data(port);
1044 struct serial_struct tmp;
1045
1046 if (!retinfo)
1047 return -EFAULT;
1048 memset(&tmp, 0, sizeof(tmp));
1049 tmp.flags = priv->flags;
1050 tmp.baud_base = priv->baud_base;
1051 tmp.custom_divisor = priv->custom_divisor;
1052 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1053 return -EFAULT;
1054 return 0;
1055 } /* get_serial_info */
1056
1057
1058 static int set_serial_info(struct tty_struct *tty,
1059 struct usb_serial_port *port, struct serial_struct __user *newinfo)
1060 { /* set_serial_info */
1061 struct ftdi_private *priv = usb_get_serial_port_data(port);
1062 struct serial_struct new_serial;
1063 struct ftdi_private old_priv;
1064
1065 if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
1066 return -EFAULT;
1067
1068 lock_kernel();
1069 old_priv = *priv;
1070
1071 /* Do error checking and permission checking */
1072
1073 if (!capable(CAP_SYS_ADMIN)) {
1074 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
1075 (priv->flags & ~ASYNC_USR_MASK))) {
1076 unlock_kernel();
1077 return -EPERM;
1078 }
1079 priv->flags = ((priv->flags & ~ASYNC_USR_MASK) |
1080 (new_serial.flags & ASYNC_USR_MASK));
1081 priv->custom_divisor = new_serial.custom_divisor;
1082 goto check_and_exit;
1083 }
1084
1085 if ((new_serial.baud_base != priv->baud_base) &&
1086 (new_serial.baud_base < 9600)) {
1087 unlock_kernel();
1088 return -EINVAL;
1089 }
1090
1091 /* Make the changes - these are privileged changes! */
1092
1093 priv->flags = ((priv->flags & ~ASYNC_FLAGS) |
1094 (new_serial.flags & ASYNC_FLAGS));
1095 priv->custom_divisor = new_serial.custom_divisor;
1096
1097 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1098
1099 check_and_exit:
1100 if ((old_priv.flags & ASYNC_SPD_MASK) !=
1101 (priv->flags & ASYNC_SPD_MASK)) {
1102 if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
1103 tty->alt_speed = 57600;
1104 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
1105 tty->alt_speed = 115200;
1106 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
1107 tty->alt_speed = 230400;
1108 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
1109 tty->alt_speed = 460800;
1110 else
1111 tty->alt_speed = 0;
1112 }
1113 if (((old_priv.flags & ASYNC_SPD_MASK) !=
1114 (priv->flags & ASYNC_SPD_MASK)) ||
1115 (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
1116 (old_priv.custom_divisor != priv->custom_divisor))) {
1117 unlock_kernel();
1118 change_speed(tty, port);
1119 }
1120 else
1121 unlock_kernel();
1122 return 0;
1123
1124 } /* set_serial_info */
1125
1126
1127 /* Determine type of FTDI chip based on USB config and descriptor. */
1128 static void ftdi_determine_type(struct usb_serial_port *port)
1129 {
1130 struct ftdi_private *priv = usb_get_serial_port_data(port);
1131 struct usb_serial *serial = port->serial;
1132 struct usb_device *udev = serial->dev;
1133 unsigned version;
1134 unsigned interfaces;
1135
1136 /* Assume it is not the original SIO device for now. */
1137 priv->baud_base = 48000000 / 2;
1138 priv->write_offset = 0;
1139
1140 version = le16_to_cpu(udev->descriptor.bcdDevice);
1141 interfaces = udev->actconfig->desc.bNumInterfaces;
1142 dbg("%s: bcdDevice = 0x%x, bNumInterfaces = %u", __func__,
1143 version, interfaces);
1144 if (interfaces > 1) {
1145 int inter;
1146
1147 /* Multiple interfaces. Assume FT2232C. */
1148 priv->chip_type = FT2232C;
1149 /* Determine interface code. */
1150 inter = serial->interface->altsetting->desc.bInterfaceNumber;
1151 if (inter == 0)
1152 priv->interface = PIT_SIOA;
1153 else
1154 priv->interface = PIT_SIOB;
1155 /* BM-type devices have a bug where bcdDevice gets set
1156 * to 0x200 when iSerialNumber is 0. */
1157 if (version < 0x500) {
1158 dbg("%s: something fishy - bcdDevice too low for multi-interface device",
1159 __func__);
1160 }
1161 } else if (version < 0x200) {
1162 /* Old device. Assume its the original SIO. */
1163 priv->chip_type = SIO;
1164 priv->baud_base = 12000000 / 16;
1165 priv->write_offset = 1;
1166 } else if (version < 0x400) {
1167 /* Assume its an FT8U232AM (or FT8U245AM) */
1168 /* (It might be a BM because of the iSerialNumber bug,
1169 * but it will still work as an AM device.) */
1170 priv->chip_type = FT8U232AM;
1171 } else if (version < 0x600) {
1172 /* Assume its an FT232BM (or FT245BM) */
1173 priv->chip_type = FT232BM;
1174 } else {
1175 /* Assume its an FT232R */
1176 priv->chip_type = FT232RL;
1177 }
1178 dev_info(&udev->dev, "Detected %s\n", ftdi_chip_name[priv->chip_type]);
1179 }
1180
1181
1182 /*
1183 * ***************************************************************************
1184 * Sysfs Attribute
1185 * ***************************************************************************
1186 */
1187
1188 static ssize_t show_latency_timer(struct device *dev,
1189 struct device_attribute *attr, char *buf)
1190 {
1191 struct usb_serial_port *port = to_usb_serial_port(dev);
1192 struct ftdi_private *priv = usb_get_serial_port_data(port);
1193 struct usb_device *udev = port->serial->dev;
1194 unsigned short latency = 0;
1195 int rv = 0;
1196
1197
1198 dbg("%s", __func__);
1199
1200 rv = usb_control_msg(udev,
1201 usb_rcvctrlpipe(udev, 0),
1202 FTDI_SIO_GET_LATENCY_TIMER_REQUEST,
1203 FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE,
1204 0, priv->interface,
1205 (char *) &latency, 1, WDR_TIMEOUT);
1206
1207 if (rv < 0) {
1208 dev_err(dev, "Unable to read latency timer: %i\n", rv);
1209 return -EIO;
1210 }
1211 return sprintf(buf, "%i\n", latency);
1212 }
1213
1214 /* Write a new value of the latency timer, in units of milliseconds. */
1215 static ssize_t store_latency_timer(struct device *dev,
1216 struct device_attribute *attr, const char *valbuf,
1217 size_t count)
1218 {
1219 struct usb_serial_port *port = to_usb_serial_port(dev);
1220 struct ftdi_private *priv = usb_get_serial_port_data(port);
1221 struct usb_device *udev = port->serial->dev;
1222 char buf[1];
1223 int v = simple_strtoul(valbuf, NULL, 10);
1224 int rv = 0;
1225
1226 dbg("%s: setting latency timer = %i", __func__, v);
1227
1228 rv = usb_control_msg(udev,
1229 usb_sndctrlpipe(udev, 0),
1230 FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
1231 FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
1232 v, priv->interface,
1233 buf, 0, WDR_TIMEOUT);
1234
1235 if (rv < 0) {
1236 dev_err(dev, "Unable to write latency timer: %i\n", rv);
1237 return -EIO;
1238 }
1239
1240 return count;
1241 }
1242
1243 /* Write an event character directly to the FTDI register. The ASCII
1244 value is in the low 8 bits, with the enable bit in the 9th bit. */
1245 static ssize_t store_event_char(struct device *dev,
1246 struct device_attribute *attr, const char *valbuf, size_t count)
1247 {
1248 struct usb_serial_port *port = to_usb_serial_port(dev);
1249 struct ftdi_private *priv = usb_get_serial_port_data(port);
1250 struct usb_device *udev = port->serial->dev;
1251 char buf[1];
1252 int v = simple_strtoul(valbuf, NULL, 10);
1253 int rv = 0;
1254
1255 dbg("%s: setting event char = %i", __func__, v);
1256
1257 rv = usb_control_msg(udev,
1258 usb_sndctrlpipe(udev, 0),
1259 FTDI_SIO_SET_EVENT_CHAR_REQUEST,
1260 FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE,
1261 v, priv->interface,
1262 buf, 0, WDR_TIMEOUT);
1263
1264 if (rv < 0) {
1265 dbg("Unable to write event character: %i", rv);
1266 return -EIO;
1267 }
1268
1269 return count;
1270 }
1271
1272 static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer,
1273 store_latency_timer);
1274 static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char);
1275
1276 static int create_sysfs_attrs(struct usb_serial_port *port)
1277 {
1278 struct ftdi_private *priv = usb_get_serial_port_data(port);
1279 int retval = 0;
1280
1281 dbg("%s", __func__);
1282
1283 /* XXX I've no idea if the original SIO supports the event_char
1284 * sysfs parameter, so I'm playing it safe. */
1285 if (priv->chip_type != SIO) {
1286 dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]);
1287 retval = device_create_file(&port->dev, &dev_attr_event_char);
1288 if ((!retval) &&
1289 (priv->chip_type == FT232BM ||
1290 priv->chip_type == FT2232C ||
1291 priv->chip_type == FT232RL)) {
1292 retval = device_create_file(&port->dev,
1293 &dev_attr_latency_timer);
1294 }
1295 }
1296 return retval;
1297 }
1298
1299 static void remove_sysfs_attrs(struct usb_serial_port *port)
1300 {
1301 struct ftdi_private *priv = usb_get_serial_port_data(port);
1302
1303 dbg("%s", __func__);
1304
1305 /* XXX see create_sysfs_attrs */
1306 if (priv->chip_type != SIO) {
1307 device_remove_file(&port->dev, &dev_attr_event_char);
1308 if (priv->chip_type == FT232BM ||
1309 priv->chip_type == FT2232C ||
1310 priv->chip_type == FT232RL) {
1311 device_remove_file(&port->dev, &dev_attr_latency_timer);
1312 }
1313 }
1314
1315 }
1316
1317 /*
1318 * ***************************************************************************
1319 * FTDI driver specific functions
1320 * ***************************************************************************
1321 */
1322
1323 /* Probe function to check for special devices */
1324 static int ftdi_sio_probe(struct usb_serial *serial,
1325 const struct usb_device_id *id)
1326 {
1327 struct ftdi_sio_quirk *quirk =
1328 (struct ftdi_sio_quirk *)id->driver_info;
1329
1330 if (quirk && quirk->probe) {
1331 int ret = quirk->probe(serial);
1332 if (ret != 0)
1333 return ret;
1334 }
1335
1336 usb_set_serial_data(serial, (void *)id->driver_info);
1337
1338 return 0;
1339 }
1340
1341 static int ftdi_sio_port_probe(struct usb_serial_port *port)
1342 {
1343 struct ftdi_private *priv;
1344 struct ftdi_sio_quirk *quirk = usb_get_serial_data(port->serial);
1345
1346
1347 dbg("%s", __func__);
1348
1349 priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL);
1350 if (!priv) {
1351 dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", __func__,
1352 sizeof(struct ftdi_private));
1353 return -ENOMEM;
1354 }
1355
1356 kref_init(&priv->kref);
1357 spin_lock_init(&priv->rx_lock);
1358 spin_lock_init(&priv->tx_lock);
1359 init_waitqueue_head(&priv->delta_msr_wait);
1360 /* This will push the characters through immediately rather
1361 than queue a task to deliver them */
1362 priv->flags = ASYNC_LOW_LATENCY;
1363
1364 if (quirk && quirk->port_probe)
1365 quirk->port_probe(priv);
1366
1367 /* Increase the size of read buffers */
1368 kfree(port->bulk_in_buffer);
1369 port->bulk_in_buffer = kmalloc(BUFSZ, GFP_KERNEL);
1370 if (!port->bulk_in_buffer) {
1371 kfree(priv);
1372 return -ENOMEM;
1373 }
1374 if (port->read_urb) {
1375 port->read_urb->transfer_buffer = port->bulk_in_buffer;
1376 port->read_urb->transfer_buffer_length = BUFSZ;
1377 }
1378
1379 INIT_DELAYED_WORK(&priv->rx_work, ftdi_process_read);
1380 priv->port = port;
1381
1382 /* Free port's existing write urb and transfer buffer. */
1383 if (port->write_urb) {
1384 usb_free_urb(port->write_urb);
1385 port->write_urb = NULL;
1386 }
1387 kfree(port->bulk_out_buffer);
1388 port->bulk_out_buffer = NULL;
1389
1390 usb_set_serial_port_data(port, priv);
1391
1392 ftdi_determine_type(port);
1393 create_sysfs_attrs(port);
1394 return 0;
1395 }
1396
1397 /* Setup for the USB-UIRT device, which requires hardwired
1398 * baudrate (38400 gets mapped to 312500) */
1399 /* Called from usbserial:serial_probe */
1400 static void ftdi_USB_UIRT_setup(struct ftdi_private *priv)
1401 {
1402 dbg("%s", __func__);
1403
1404 priv->flags |= ASYNC_SPD_CUST;
1405 priv->custom_divisor = 77;
1406 priv->force_baud = 38400;
1407 } /* ftdi_USB_UIRT_setup */
1408
1409 /* Setup for the HE-TIRA1 device, which requires hardwired
1410 * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */
1411
1412 static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv)
1413 {
1414 dbg("%s", __func__);
1415
1416 priv->flags |= ASYNC_SPD_CUST;
1417 priv->custom_divisor = 240;
1418 priv->force_baud = 38400;
1419 priv->force_rtscts = 1;
1420 } /* ftdi_HE_TIRA1_setup */
1421
1422 /*
1423 * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko
1424 * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from
1425 * userspace using openocd.
1426 */
1427 static int ftdi_jtag_probe(struct usb_serial *serial)
1428 {
1429 struct usb_device *udev = serial->dev;
1430 struct usb_interface *interface = serial->interface;
1431
1432 dbg("%s", __func__);
1433
1434 if (interface == udev->actconfig->interface[0]) {
1435 dev_info(&udev->dev,
1436 "Ignoring serial port reserved for JTAG\n");
1437 return -ENODEV;
1438 }
1439
1440 return 0;
1441 }
1442
1443 /*
1444 * The Matrix Orbital VK204-25-USB has an invalid IN endpoint.
1445 * We have to correct it if we want to read from it.
1446 */
1447 static int ftdi_mtxorb_hack_setup(struct usb_serial *serial)
1448 {
1449 struct usb_host_endpoint *ep = serial->dev->ep_in[1];
1450 struct usb_endpoint_descriptor *ep_desc = &ep->desc;
1451
1452 if (ep->enabled && ep_desc->wMaxPacketSize == 0) {
1453 ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
1454 dev_info(&serial->dev->dev,
1455 "Fixing invalid wMaxPacketSize on read pipe\n");
1456 }
1457
1458 return 0;
1459 }
1460
1461 /* ftdi_shutdown is called from usbserial:usb_serial_disconnect
1462 * it is called when the usb device is disconnected
1463 *
1464 * usbserial:usb_serial_disconnect
1465 * calls __serial_close for each open of the port
1466 * shutdown is called then (ie ftdi_shutdown)
1467 */
1468 static void ftdi_shutdown(struct usb_serial *serial)
1469 {
1470 dbg("%s", __func__);
1471 }
1472
1473 static void ftdi_sio_priv_release(struct kref *k)
1474 {
1475 struct ftdi_private *priv = container_of(k, struct ftdi_private, kref);
1476
1477 kfree(priv);
1478 }
1479
1480 static int ftdi_sio_port_remove(struct usb_serial_port *port)
1481 {
1482 struct ftdi_private *priv = usb_get_serial_port_data(port);
1483
1484 dbg("%s", __func__);
1485
1486 remove_sysfs_attrs(port);
1487
1488 kref_put(&priv->kref, ftdi_sio_priv_release);
1489
1490 return 0;
1491 }
1492
1493 static int ftdi_open(struct tty_struct *tty,
1494 struct usb_serial_port *port, struct file *filp)
1495 { /* ftdi_open */
1496 struct usb_device *dev = port->serial->dev;
1497 struct ftdi_private *priv = usb_get_serial_port_data(port);
1498 unsigned long flags;
1499
1500 int result = 0;
1501 char buf[1]; /* Needed for the usb_control_msg I think */
1502
1503 dbg("%s", __func__);
1504
1505 spin_lock_irqsave(&priv->tx_lock, flags);
1506 priv->tx_bytes = 0;
1507 spin_unlock_irqrestore(&priv->tx_lock, flags);
1508 spin_lock_irqsave(&priv->rx_lock, flags);
1509 priv->rx_bytes = 0;
1510 spin_unlock_irqrestore(&priv->rx_lock, flags);
1511
1512 if (tty)
1513 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1514
1515 /* No error checking for this (will get errors later anyway) */
1516 /* See ftdi_sio.h for description of what is reset */
1517 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1518 FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
1519 FTDI_SIO_RESET_SIO,
1520 priv->interface, buf, 0, WDR_TIMEOUT);
1521
1522 /* Termios defaults are set by usb_serial_init. We don't change
1523 port->tty->termios - this would lose speed settings, etc.
1524 This is same behaviour as serial.c/rs_open() - Kuba */
1525
1526 /* ftdi_set_termios will send usb control messages */
1527 if (tty)
1528 ftdi_set_termios(tty, port, tty->termios);
1529
1530 /* FIXME: Flow control might be enabled, so it should be checked -
1531 we have no control of defaults! */
1532 /* Turn on RTS and DTR since we are not flow controlling by default */
1533 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1534
1535 /* Not throttled */
1536 spin_lock_irqsave(&priv->rx_lock, flags);
1537 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
1538 spin_unlock_irqrestore(&priv->rx_lock, flags);
1539
1540 /* Start reading from the device */
1541 priv->rx_processed = 0;
1542 usb_fill_bulk_urb(port->read_urb, dev,
1543 usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress),
1544 port->read_urb->transfer_buffer,
1545 port->read_urb->transfer_buffer_length,
1546 ftdi_read_bulk_callback, port);
1547 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
1548 if (result)
1549 dev_err(&port->dev,
1550 "%s - failed submitting read urb, error %d\n",
1551 __func__, result);
1552 else
1553 kref_get(&priv->kref);
1554
1555 return result;
1556 } /* ftdi_open */
1557
1558
1559
1560 /*
1561 * usbserial:__serial_close only calls ftdi_close if the point is open
1562 *
1563 * This only gets called when it is the last close
1564 *
1565 *
1566 */
1567
1568 static void ftdi_close(struct tty_struct *tty,
1569 struct usb_serial_port *port, struct file *filp)
1570 { /* ftdi_close */
1571 unsigned int c_cflag = tty->termios->c_cflag;
1572 struct ftdi_private *priv = usb_get_serial_port_data(port);
1573 char buf[1];
1574
1575 dbg("%s", __func__);
1576
1577 mutex_lock(&port->serial->disc_mutex);
1578 if (c_cflag & HUPCL && !port->serial->disconnected) {
1579 /* Disable flow control */
1580 if (usb_control_msg(port->serial->dev,
1581 usb_sndctrlpipe(port->serial->dev, 0),
1582 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
1583 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
1584 0, priv->interface, buf, 0,
1585 WDR_TIMEOUT) < 0) {
1586 dev_err(&port->dev, "error from flowcontrol urb\n");
1587 }
1588
1589 /* drop RTS and DTR */
1590 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1591 } /* Note change no line if hupcl is off */
1592 mutex_unlock(&port->serial->disc_mutex);
1593
1594 /* cancel any scheduled reading */
1595 cancel_delayed_work_sync(&priv->rx_work);
1596
1597 /* shutdown our bulk read */
1598 usb_kill_urb(port->read_urb);
1599 kref_put(&priv->kref, ftdi_sio_priv_release);
1600 } /* ftdi_close */
1601
1602
1603
1604 /* The SIO requires the first byte to have:
1605 * B0 1
1606 * B1 0
1607 * B2..7 length of message excluding byte 0
1608 *
1609 * The new devices do not require this byte
1610 */
1611 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
1612 const unsigned char *buf, int count)
1613 { /* ftdi_write */
1614 struct ftdi_private *priv = usb_get_serial_port_data(port);
1615 struct urb *urb;
1616 unsigned char *buffer;
1617 int data_offset ; /* will be 1 for the SIO and 0 otherwise */
1618 int status;
1619 int transfer_size;
1620 unsigned long flags;
1621
1622 dbg("%s port %d, %d bytes", __func__, port->number, count);
1623
1624 if (count == 0) {
1625 dbg("write request of 0 bytes");
1626 return 0;
1627 }
1628 spin_lock_irqsave(&priv->tx_lock, flags);
1629 if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) {
1630 spin_unlock_irqrestore(&priv->tx_lock, flags);
1631 dbg("%s - write limit hit\n", __func__);
1632 return 0;
1633 }
1634 priv->tx_outstanding_urbs++;
1635 spin_unlock_irqrestore(&priv->tx_lock, flags);
1636
1637 data_offset = priv->write_offset;
1638 dbg("data_offset set to %d", data_offset);
1639
1640 /* Determine total transfer size */
1641 transfer_size = count;
1642 if (data_offset > 0) {
1643 /* Original sio needs control bytes too... */
1644 transfer_size += (data_offset *
1645 ((count + (PKTSZ - 1 - data_offset)) /
1646 (PKTSZ - data_offset)));
1647 }
1648
1649 buffer = kmalloc(transfer_size, GFP_ATOMIC);
1650 if (!buffer) {
1651 dev_err(&port->dev,
1652 "%s ran out of kernel memory for urb ...\n", __func__);
1653 count = -ENOMEM;
1654 goto error_no_buffer;
1655 }
1656
1657 urb = usb_alloc_urb(0, GFP_ATOMIC);
1658 if (!urb) {
1659 dev_err(&port->dev, "%s - no more free urbs\n", __func__);
1660 count = -ENOMEM;
1661 goto error_no_urb;
1662 }
1663
1664 /* Copy data */
1665 if (data_offset > 0) {
1666 /* Original sio requires control byte at start of
1667 each packet. */
1668 int user_pktsz = PKTSZ - data_offset;
1669 int todo = count;
1670 unsigned char *first_byte = buffer;
1671 const unsigned char *current_position = buf;
1672
1673 while (todo > 0) {
1674 if (user_pktsz > todo)
1675 user_pktsz = todo;
1676 /* Write the control byte at the front of the packet*/
1677 *first_byte = 1 | ((user_pktsz) << 2);
1678 /* Copy data for packet */
1679 memcpy(first_byte + data_offset,
1680 current_position, user_pktsz);
1681 first_byte += user_pktsz + data_offset;
1682 current_position += user_pktsz;
1683 todo -= user_pktsz;
1684 }
1685 } else {
1686 /* No control byte required. */
1687 /* Copy in the data to send */
1688 memcpy(buffer, buf, count);
1689 }
1690
1691 usb_serial_debug_data(debug, &port->dev, __func__,
1692 transfer_size, buffer);
1693
1694 /* fill the buffer and send it */
1695 usb_fill_bulk_urb(urb, port->serial->dev,
1696 usb_sndbulkpipe(port->serial->dev,
1697 port->bulk_out_endpointAddress),
1698 buffer, transfer_size,
1699 ftdi_write_bulk_callback, port);
1700
1701 status = usb_submit_urb(urb, GFP_ATOMIC);
1702 if (status) {
1703 dev_err(&port->dev,
1704 "%s - failed submitting write urb, error %d\n",
1705 __func__, status);
1706 count = status;
1707 goto error;
1708 } else {
1709 spin_lock_irqsave(&priv->tx_lock, flags);
1710 priv->tx_outstanding_bytes += count;
1711 priv->tx_bytes += count;
1712 spin_unlock_irqrestore(&priv->tx_lock, flags);
1713 }
1714
1715 /* we are done with this urb, so let the host driver
1716 * really free it when it is finished with it */
1717 usb_free_urb(urb);
1718
1719 dbg("%s write returning: %d", __func__, count);
1720 return count;
1721 error:
1722 usb_free_urb(urb);
1723 error_no_urb:
1724 kfree(buffer);
1725 error_no_buffer:
1726 spin_lock_irqsave(&priv->tx_lock, flags);
1727 priv->tx_outstanding_urbs--;
1728 spin_unlock_irqrestore(&priv->tx_lock, flags);
1729 return count;
1730 } /* ftdi_write */
1731
1732
1733 /* This function may get called when the device is closed */
1734
1735 static void ftdi_write_bulk_callback(struct urb *urb)
1736 {
1737 unsigned long flags;
1738 struct usb_serial_port *port = urb->context;
1739 struct ftdi_private *priv;
1740 int data_offset; /* will be 1 for the SIO and 0 otherwise */
1741 unsigned long countback;
1742 int status = urb->status;
1743
1744 /* free up the transfer buffer, as usb_free_urb() does not do this */
1745 kfree(urb->transfer_buffer);
1746
1747 dbg("%s - port %d", __func__, port->number);
1748
1749 if (status) {
1750 dbg("nonzero write bulk status received: %d", status);
1751 return;
1752 }
1753
1754 priv = usb_get_serial_port_data(port);
1755 if (!priv) {
1756 dbg("%s - bad port private data pointer - exiting", __func__);
1757 return;
1758 }
1759 /* account for transferred data */
1760 countback = urb->actual_length;
1761 data_offset = priv->write_offset;
1762 if (data_offset > 0) {
1763 /* Subtract the control bytes */
1764 countback -= (data_offset * DIV_ROUND_UP(countback, PKTSZ));
1765 }
1766 spin_lock_irqsave(&priv->tx_lock, flags);
1767 --priv->tx_outstanding_urbs;
1768 priv->tx_outstanding_bytes -= countback;
1769 spin_unlock_irqrestore(&priv->tx_lock, flags);
1770
1771 usb_serial_port_softint(port);
1772 } /* ftdi_write_bulk_callback */
1773
1774
1775 static int ftdi_write_room(struct tty_struct *tty)
1776 {
1777 struct usb_serial_port *port = tty->driver_data;
1778 struct ftdi_private *priv = usb_get_serial_port_data(port);
1779 int room;
1780 unsigned long flags;
1781
1782 dbg("%s - port %d", __func__, port->number);
1783
1784 spin_lock_irqsave(&priv->tx_lock, flags);
1785 if (priv->tx_outstanding_urbs < URB_UPPER_LIMIT) {
1786 /*
1787 * We really can take anything the user throws at us
1788 * but let's pick a nice big number to tell the tty
1789 * layer that we have lots of free space
1790 */
1791 room = 2048;
1792 } else {
1793 room = 0;
1794 }
1795 spin_unlock_irqrestore(&priv->tx_lock, flags);
1796 return room;
1797 }
1798
1799 static int ftdi_chars_in_buffer(struct tty_struct *tty)
1800 {
1801 struct usb_serial_port *port = tty->driver_data;
1802 struct ftdi_private *priv = usb_get_serial_port_data(port);
1803 int buffered;
1804 unsigned long flags;
1805
1806 dbg("%s - port %d", __func__, port->number);
1807
1808 spin_lock_irqsave(&priv->tx_lock, flags);
1809 buffered = (int)priv->tx_outstanding_bytes;
1810 spin_unlock_irqrestore(&priv->tx_lock, flags);
1811 if (buffered < 0) {
1812 dev_err(&port->dev, "%s outstanding tx bytes is negative!\n",
1813 __func__);
1814 buffered = 0;
1815 }
1816 return buffered;
1817 }
1818
1819 static void ftdi_read_bulk_callback(struct urb *urb)
1820 {
1821 struct usb_serial_port *port = urb->context;
1822 struct tty_struct *tty;
1823 struct ftdi_private *priv;
1824 unsigned long countread;
1825 unsigned long flags;
1826 int status = urb->status;
1827
1828 if (urb->number_of_packets > 0) {
1829 dev_err(&port->dev, "%s transfer_buffer_length %d "
1830 "actual_length %d number of packets %d\n", __func__,
1831 urb->transfer_buffer_length,
1832 urb->actual_length, urb->number_of_packets);
1833 dev_err(&port->dev, "%s transfer_flags %x\n", __func__,
1834 urb->transfer_flags);
1835 }
1836
1837 dbg("%s - port %d", __func__, port->number);
1838
1839 if (port->port.count <= 0)
1840 return;
1841
1842 tty = tty_port_tty_get(&port->port);
1843 if (!tty) {
1844 dbg("%s - bad tty pointer - exiting", __func__);
1845 return;
1846 }
1847
1848 priv = usb_get_serial_port_data(port);
1849 if (!priv) {
1850 dbg("%s - bad port private data pointer - exiting", __func__);
1851 goto out;
1852 }
1853
1854 if (urb != port->read_urb)
1855 dev_err(&port->dev, "%s - Not my urb!\n", __func__);
1856
1857 if (status) {
1858 /* This will happen at close every time so it is a dbg not an
1859 err */
1860 dbg("(this is ok on close) nonzero read bulk status received: %d", status);
1861 goto out;
1862 }
1863
1864 /* count data bytes, but not status bytes */
1865 countread = urb->actual_length;
1866 countread -= 2 * DIV_ROUND_UP(countread, PKTSZ);
1867 spin_lock_irqsave(&priv->rx_lock, flags);
1868 priv->rx_bytes += countread;
1869 spin_unlock_irqrestore(&priv->rx_lock, flags);
1870
1871 ftdi_process_read(&priv->rx_work.work);
1872 out:
1873 tty_kref_put(tty);
1874 } /* ftdi_read_bulk_callback */
1875
1876
1877 static void ftdi_process_read(struct work_struct *work)
1878 { /* ftdi_process_read */
1879 struct ftdi_private *priv =
1880 container_of(work, struct ftdi_private, rx_work.work);
1881 struct usb_serial_port *port = priv->port;
1882 struct urb *urb;
1883 struct tty_struct *tty;
1884 char error_flag;
1885 unsigned char *data;
1886
1887 int i;
1888 int result;
1889 int need_flip;
1890 int packet_offset;
1891 unsigned long flags;
1892
1893 dbg("%s - port %d", __func__, port->number);
1894
1895 if (port->port.count <= 0)
1896 return;
1897
1898 tty = tty_port_tty_get(&port->port);
1899 if (!tty) {
1900 dbg("%s - bad tty pointer - exiting", __func__);
1901 return;
1902 }
1903
1904 priv = usb_get_serial_port_data(port);
1905 if (!priv) {
1906 dbg("%s - bad port private data pointer - exiting", __func__);
1907 goto out;
1908 }
1909
1910 urb = port->read_urb;
1911 if (!urb) {
1912 dbg("%s - bad read_urb pointer - exiting", __func__);
1913 goto out;
1914 }
1915
1916 data = urb->transfer_buffer;
1917
1918 if (priv->rx_processed) {
1919 dbg("%s - already processed: %d bytes, %d remain", __func__,
1920 priv->rx_processed,
1921 urb->actual_length - priv->rx_processed);
1922 } else {
1923 /* The first two bytes of every read packet are status */
1924 if (urb->actual_length > 2)
1925 usb_serial_debug_data(debug, &port->dev, __func__,
1926 urb->actual_length, data);
1927 else
1928 dbg("Status only: %03oo %03oo", data[0], data[1]);
1929 }
1930
1931
1932 /* TO DO -- check for hung up line and handle appropriately: */
1933 /* send hangup */
1934 /* See acm.c - you do a tty_hangup - eg tty_hangup(tty) */
1935 /* if CD is dropped and the line is not CLOCAL then we should hangup */
1936
1937 need_flip = 0;
1938 for (packet_offset = priv->rx_processed;
1939 packet_offset < urb->actual_length; packet_offset += PKTSZ) {
1940 int length;
1941
1942 /* Compare new line status to the old one, signal if different/
1943 N.B. packet may be processed more than once, but differences
1944 are only processed once. */
1945 if (priv != NULL) {
1946 char new_status = data[packet_offset + 0] &
1947 FTDI_STATUS_B0_MASK;
1948 if (new_status != priv->prev_status) {
1949 priv->diff_status |=
1950 new_status ^ priv->prev_status;
1951 wake_up_interruptible(&priv->delta_msr_wait);
1952 priv->prev_status = new_status;
1953 }
1954 }
1955
1956 length = min(PKTSZ, urb->actual_length-packet_offset)-2;
1957 if (length < 0) {
1958 dev_err(&port->dev, "%s - bad packet length: %d\n",
1959 __func__, length+2);
1960 length = 0;
1961 }
1962
1963 if (priv->rx_flags & THROTTLED) {
1964 dbg("%s - throttled", __func__);
1965 break;
1966 }
1967 if (tty_buffer_request_room(tty, length) < length) {
1968 /* break out & wait for throttling/unthrottling to
1969 happen */
1970 dbg("%s - receive room low", __func__);
1971 break;
1972 }
1973
1974 /* Handle errors and break */
1975 error_flag = TTY_NORMAL;
1976 /* Although the device uses a bitmask and hence can have
1977 multiple errors on a packet - the order here sets the
1978 priority the error is returned to the tty layer */
1979
1980 if (data[packet_offset+1] & FTDI_RS_OE) {
1981 error_flag = TTY_OVERRUN;
1982 dbg("OVERRRUN error");
1983 }
1984 if (data[packet_offset+1] & FTDI_RS_BI) {
1985 error_flag = TTY_BREAK;
1986 dbg("BREAK received");
1987 }
1988 if (data[packet_offset+1] & FTDI_RS_PE) {
1989 error_flag = TTY_PARITY;
1990 dbg("PARITY error");
1991 }
1992 if (data[packet_offset+1] & FTDI_RS_FE) {
1993 error_flag = TTY_FRAME;
1994 dbg("FRAMING error");
1995 }
1996 if (length > 0) {
1997 for (i = 2; i < length+2; i++) {
1998 /* Note that the error flag is duplicated for
1999 every character received since we don't know
2000 which character it applied to */
2001 tty_insert_flip_char(tty,
2002 data[packet_offset + i], error_flag);
2003 }
2004 need_flip = 1;
2005 }
2006
2007 #ifdef NOT_CORRECT_BUT_KEEPING_IT_FOR_NOW
2008 /* if a parity error is detected you get status packets forever
2009 until a character is sent without a parity error.
2010 This doesn't work well since the application receives a
2011 never ending stream of bad data - even though new data
2012 hasn't been sent. Therefore I (bill) have taken this out.
2013 However - this might make sense for framing errors and so on
2014 so I am leaving the code in for now.
2015 */
2016 else {
2017 if (error_flag != TTY_NORMAL) {
2018 dbg("error_flag is not normal");
2019 /* In this case it is just status - if that is
2020 an error send a bad character */
2021 if (tty->flip.count >= TTY_FLIPBUF_SIZE)
2022 tty_flip_buffer_push(tty);
2023 tty_insert_flip_char(tty, 0xff, error_flag);
2024 need_flip = 1;
2025 }
2026 }
2027 #endif
2028 } /* "for(packet_offset=0..." */
2029
2030 /* Low latency */
2031 if (need_flip)
2032 tty_flip_buffer_push(tty);
2033
2034 if (packet_offset < urb->actual_length) {
2035 /* not completely processed - record progress */
2036 priv->rx_processed = packet_offset;
2037 dbg("%s - incomplete, %d bytes processed, %d remain",
2038 __func__, packet_offset,
2039 urb->actual_length - packet_offset);
2040 /* check if we were throttled while processing */
2041 spin_lock_irqsave(&priv->rx_lock, flags);
2042 if (priv->rx_flags & THROTTLED) {
2043 priv->rx_flags |= ACTUALLY_THROTTLED;
2044 spin_unlock_irqrestore(&priv->rx_lock, flags);
2045 dbg("%s - deferring remainder until unthrottled",
2046 __func__);
2047 goto out;
2048 }
2049 spin_unlock_irqrestore(&priv->rx_lock, flags);
2050 /* if the port is closed stop trying to read */
2051 if (port->port.count > 0)
2052 /* delay processing of remainder */
2053 schedule_delayed_work(&priv->rx_work, 1);
2054 else
2055 dbg("%s - port is closed", __func__);
2056 goto out;
2057 }
2058
2059 /* urb is completely processed */
2060 priv->rx_processed = 0;
2061
2062 /* if the port is closed stop trying to read */
2063 if (port->port.count > 0) {
2064 /* Continue trying to always read */
2065 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
2066 usb_rcvbulkpipe(port->serial->dev,
2067 port->bulk_in_endpointAddress),
2068 port->read_urb->transfer_buffer,
2069 port->read_urb->transfer_buffer_length,
2070 ftdi_read_bulk_callback, port);
2071
2072 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
2073 if (result)
2074 dev_err(&port->dev,
2075 "%s - failed resubmitting read urb, error %d\n",
2076 __func__, result);
2077 }
2078 out:
2079 tty_kref_put(tty);
2080 } /* ftdi_process_read */
2081
2082
2083 static void ftdi_break_ctl(struct tty_struct *tty, int break_state)
2084 {
2085 struct usb_serial_port *port = tty->driver_data;
2086 struct ftdi_private *priv = usb_get_serial_port_data(port);
2087 __u16 urb_value = 0;
2088 char buf[1];
2089
2090 /* break_state = -1 to turn on break, and 0 to turn off break */
2091 /* see drivers/char/tty_io.c to see it used */
2092 /* last_set_data_urb_value NEVER has the break bit set in it */
2093
2094 if (break_state)
2095 urb_value = priv->last_set_data_urb_value | FTDI_SIO_SET_BREAK;
2096 else
2097 urb_value = priv->last_set_data_urb_value;
2098
2099 if (usb_control_msg(port->serial->dev,
2100 usb_sndctrlpipe(port->serial->dev, 0),
2101 FTDI_SIO_SET_DATA_REQUEST,
2102 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2103 urb_value , priv->interface,
2104 buf, 0, WDR_TIMEOUT) < 0) {
2105 dev_err(&port->dev, "%s FAILED to enable/disable break state "
2106 "(state was %d)\n", __func__, break_state);
2107 }
2108
2109 dbg("%s break state is %d - urb is %d", __func__,
2110 break_state, urb_value);
2111
2112 }
2113
2114
2115 /* old_termios contains the original termios settings and tty->termios contains
2116 * the new setting to be used
2117 * WARNING: set_termios calls this with old_termios in kernel space
2118 */
2119
2120 static void ftdi_set_termios(struct tty_struct *tty,
2121 struct usb_serial_port *port, struct ktermios *old_termios)
2122 { /* ftdi_termios */
2123 struct usb_device *dev = port->serial->dev;
2124 struct ftdi_private *priv = usb_get_serial_port_data(port);
2125 struct ktermios *termios = tty->termios;
2126 unsigned int cflag = termios->c_cflag;
2127 __u16 urb_value; /* will hold the new flags */
2128 char buf[1]; /* Perhaps I should dynamically alloc this? */
2129
2130 /* Added for xon/xoff support */
2131 unsigned int iflag = termios->c_iflag;
2132 unsigned char vstop;
2133 unsigned char vstart;
2134
2135 dbg("%s", __func__);
2136
2137 /* Force baud rate if this device requires it, unless it is set to
2138 B0. */
2139 if (priv->force_baud && ((termios->c_cflag & CBAUD) != B0)) {
2140 dbg("%s: forcing baud rate for this device", __func__);
2141 tty_encode_baud_rate(tty, priv->force_baud,
2142 priv->force_baud);
2143 }
2144
2145 /* Force RTS-CTS if this device requires it. */
2146 if (priv->force_rtscts) {
2147 dbg("%s: forcing rtscts for this device", __func__);
2148 termios->c_cflag |= CRTSCTS;
2149 }
2150
2151 cflag = termios->c_cflag;
2152
2153 /* FIXME -For this cut I don't care if the line is really changing or
2154 not - so just do the change regardless - should be able to
2155 compare old_termios and tty->termios */
2156 /* NOTE These routines can get interrupted by
2157 ftdi_sio_read_bulk_callback - need to examine what this means -
2158 don't see any problems yet */
2159
2160 /* Set number of data bits, parity, stop bits */
2161
2162 termios->c_cflag &= ~CMSPAR;
2163
2164 urb_value = 0;
2165 urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 :
2166 FTDI_SIO_SET_DATA_STOP_BITS_1);
2167 urb_value |= (cflag & PARENB ?
2168 (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD :
2169 FTDI_SIO_SET_DATA_PARITY_EVEN) :
2170 FTDI_SIO_SET_DATA_PARITY_NONE);
2171 if (cflag & CSIZE) {
2172 switch (cflag & CSIZE) {
2173 case CS5: urb_value |= 5; dbg("Setting CS5"); break;
2174 case CS6: urb_value |= 6; dbg("Setting CS6"); break;
2175 case CS7: urb_value |= 7; dbg("Setting CS7"); break;
2176 case CS8: urb_value |= 8; dbg("Setting CS8"); break;
2177 default:
2178 dev_err(&port->dev, "CSIZE was set but not CS5-CS8\n");
2179 }
2180 }
2181
2182 /* This is needed by the break command since it uses the same command
2183 - but is or'ed with this value */
2184 priv->last_set_data_urb_value = urb_value;
2185
2186 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2187 FTDI_SIO_SET_DATA_REQUEST,
2188 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2189 urb_value , priv->interface,
2190 buf, 0, WDR_SHORT_TIMEOUT) < 0) {
2191 dev_err(&port->dev, "%s FAILED to set "
2192 "databits/stopbits/parity\n", __func__);
2193 }
2194
2195 /* Now do the baudrate */
2196 if ((cflag & CBAUD) == B0) {
2197 /* Disable flow control */
2198 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2199 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2200 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2201 0, priv->interface,
2202 buf, 0, WDR_TIMEOUT) < 0) {
2203 dev_err(&port->dev,
2204 "%s error from disable flowcontrol urb\n",
2205 __func__);
2206 }
2207 /* Drop RTS and DTR */
2208 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2209 } else {
2210 /* set the baudrate determined before */
2211 if (change_speed(tty, port))
2212 dev_err(&port->dev, "%s urb failed to set baudrate\n",
2213 __func__);
2214 /* Ensure RTS and DTR are raised when baudrate changed from 0 */
2215 if (!old_termios || (old_termios->c_cflag & CBAUD) == B0)
2216 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2217 }
2218
2219 /* Set flow control */
2220 /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */
2221 if (cflag & CRTSCTS) {
2222 dbg("%s Setting to CRTSCTS flow control", __func__);
2223 if (usb_control_msg(dev,
2224 usb_sndctrlpipe(dev, 0),
2225 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2226 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2227 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface),
2228 buf, 0, WDR_TIMEOUT) < 0) {
2229 dev_err(&port->dev,
2230 "urb failed to set to rts/cts flow control\n");
2231 }
2232
2233 } else {
2234 /*
2235 * Xon/Xoff code
2236 *
2237 * Check the IXOFF status in the iflag component of the
2238 * termios structure. If IXOFF is not set, the pre-xon/xoff
2239 * code is executed.
2240 */
2241 if (iflag & IXOFF) {
2242 dbg("%s request to enable xonxoff iflag=%04x",
2243 __func__, iflag);
2244 /* Try to enable the XON/XOFF on the ftdi_sio
2245 * Set the vstart and vstop -- could have been done up
2246 * above where a lot of other dereferencing is done but
2247 * that would be very inefficient as vstart and vstop
2248 * are not always needed.
2249 */
2250 vstart = termios->c_cc[VSTART];
2251 vstop = termios->c_cc[VSTOP];
2252 urb_value = (vstop << 8) | (vstart);
2253
2254 if (usb_control_msg(dev,
2255 usb_sndctrlpipe(dev, 0),
2256 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2257 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2258 urb_value , (FTDI_SIO_XON_XOFF_HS
2259 | priv->interface),
2260 buf, 0, WDR_TIMEOUT) < 0) {
2261 dev_err(&port->dev, "urb failed to set to "
2262 "xon/xoff flow control\n");
2263 }
2264 } else {
2265 /* else clause to only run if cflag ! CRTSCTS and iflag
2266 * ! XOFF. CHECKME Assuming XON/XOFF handled by tty
2267 * stack - not by device */
2268 dbg("%s Turning off hardware flow control", __func__);
2269 if (usb_control_msg(dev,
2270 usb_sndctrlpipe(dev, 0),
2271 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2272 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2273 0, priv->interface,
2274 buf, 0, WDR_TIMEOUT) < 0) {
2275 dev_err(&port->dev,
2276 "urb failed to clear flow control\n");
2277 }
2278 }
2279
2280 }
2281 return;
2282 }
2283
2284 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
2285 {
2286 struct usb_serial_port *port = tty->driver_data;
2287 struct ftdi_private *priv = usb_get_serial_port_data(port);
2288 unsigned char buf[2];
2289 int ret;
2290
2291 dbg("%s TIOCMGET", __func__);
2292 switch (priv->chip_type) {
2293 case SIO:
2294 /* Request the status from the device */
2295 ret = usb_control_msg(port->serial->dev,
2296 usb_rcvctrlpipe(port->serial->dev, 0),
2297 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2298 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2299 0, 0,
2300 buf, 1, WDR_TIMEOUT);
2301 if (ret < 0) {
2302 dbg("%s Could not get modem status of device - err: %d", __func__,
2303 ret);
2304 return ret;
2305 }
2306 break;
2307 case FT8U232AM:
2308 case FT232BM:
2309 case FT2232C:
2310 case FT232RL:
2311 /* the 8U232AM returns a two byte value (the sio is a 1 byte
2312 value) - in the same format as the data returned from the in
2313 point */
2314 ret = usb_control_msg(port->serial->dev,
2315 usb_rcvctrlpipe(port->serial->dev, 0),
2316 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2317 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2318 0, priv->interface,
2319 buf, 2, WDR_TIMEOUT);
2320 if (ret < 0) {
2321 dbg("%s Could not get modem status of device - err: %d", __func__,
2322 ret);
2323 return ret;
2324 }
2325 break;
2326 default:
2327 return -EFAULT;
2328 break;
2329 }
2330
2331 return (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
2332 (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) |
2333 (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) |
2334 (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0) |
2335 priv->last_dtr_rts;
2336 }
2337
2338 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
2339 unsigned int set, unsigned int clear)
2340 {
2341 struct usb_serial_port *port = tty->driver_data;
2342 dbg("%s TIOCMSET", __func__);
2343 return update_mctrl(port, set, clear);
2344 }
2345
2346
2347 static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
2348 unsigned int cmd, unsigned long arg)
2349 {
2350 struct usb_serial_port *port = tty->driver_data;
2351 struct ftdi_private *priv = usb_get_serial_port_data(port);
2352
2353 dbg("%s cmd 0x%04x", __func__, cmd);
2354
2355 /* Based on code from acm.c and others */
2356 switch (cmd) {
2357
2358 case TIOCGSERIAL: /* gets serial port data */
2359 return get_serial_info(port,
2360 (struct serial_struct __user *) arg);
2361
2362 case TIOCSSERIAL: /* sets serial port data */
2363 return set_serial_info(tty, port,
2364 (struct serial_struct __user *) arg);
2365
2366 /*
2367 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
2368 * - mask passed in arg for lines of interest
2369 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
2370 * Caller should use TIOCGICOUNT to see which one it was.
2371 *
2372 * This code is borrowed from linux/drivers/char/serial.c
2373 */
2374 case TIOCMIWAIT:
2375 while (priv != NULL) {
2376 interruptible_sleep_on(&priv->delta_msr_wait);
2377 /* see if a signal did it */
2378 if (signal_pending(current))
2379 return -ERESTARTSYS;
2380 else {
2381 char diff = priv->diff_status;
2382
2383 if (diff == 0)
2384 return -EIO; /* no change => error */
2385
2386 /* Consume all events */
2387 priv->diff_status = 0;
2388
2389 /* Return 0 if caller wanted to know about
2390 these bits */
2391 if (((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) ||
2392 ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) ||
2393 ((arg & TIOCM_CD) && (diff & FTDI_RS0_RLSD)) ||
2394 ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS))) {
2395 return 0;
2396 }
2397 /*
2398 * Otherwise caller can't care less about what
2399 * happened,and so we continue to wait for more
2400 * events.
2401 */
2402 }
2403 }
2404 return 0;
2405 default:
2406 break;
2407 }
2408 /* This is not necessarily an error - turns out the higher layers
2409 * will do some ioctls themselves (see comment above)
2410 */
2411 dbg("%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h", __func__, cmd);
2412 return -ENOIOCTLCMD;
2413 }
2414
2415 static void ftdi_throttle(struct tty_struct *tty)
2416 {
2417 struct usb_serial_port *port = tty->driver_data;
2418 struct ftdi_private *priv = usb_get_serial_port_data(port);
2419 unsigned long flags;
2420
2421 dbg("%s - port %d", __func__, port->number);
2422
2423 spin_lock_irqsave(&priv->rx_lock, flags);
2424 priv->rx_flags |= THROTTLED;
2425 spin_unlock_irqrestore(&priv->rx_lock, flags);
2426 }
2427
2428
2429 static void ftdi_unthrottle(struct tty_struct *tty)
2430 {
2431 struct usb_serial_port *port = tty->driver_data;
2432 struct ftdi_private *priv = usb_get_serial_port_data(port);
2433 int actually_throttled;
2434 unsigned long flags;
2435
2436 dbg("%s - port %d", __func__, port->number);
2437
2438 spin_lock_irqsave(&priv->rx_lock, flags);
2439 actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED;
2440 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
2441 spin_unlock_irqrestore(&priv->rx_lock, flags);
2442
2443 if (actually_throttled)
2444 schedule_delayed_work(&priv->rx_work, 0);
2445 }
2446
2447 static int __init ftdi_init(void)
2448 {
2449 int retval;
2450
2451 dbg("%s", __func__);
2452 if (vendor > 0 && product > 0) {
2453 /* Add user specified VID/PID to reserved element of table. */
2454 int i;
2455 for (i = 0; id_table_combined[i].idVendor; i++)
2456 ;
2457 id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
2458 id_table_combined[i].idVendor = vendor;
2459 id_table_combined[i].idProduct = product;
2460 }
2461 retval = usb_serial_register(&ftdi_sio_device);
2462 if (retval)
2463 goto failed_sio_register;
2464 retval = usb_register(&ftdi_driver);
2465 if (retval)
2466 goto failed_usb_register;
2467
2468 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
2469 DRIVER_DESC "\n");
2470 return 0;
2471 failed_usb_register:
2472 usb_serial_deregister(&ftdi_sio_device);
2473 failed_sio_register:
2474 return retval;
2475 }
2476
2477
2478 static void __exit ftdi_exit(void)
2479 {
2480
2481 dbg("%s", __func__);
2482
2483 usb_deregister(&ftdi_driver);
2484 usb_serial_deregister(&ftdi_sio_device);
2485
2486 }
2487
2488
2489 module_init(ftdi_init);
2490 module_exit(ftdi_exit);
2491
2492 MODULE_AUTHOR(DRIVER_AUTHOR);
2493 MODULE_DESCRIPTION(DRIVER_DESC);
2494 MODULE_LICENSE("GPL");
2495
2496 module_param(debug, bool, S_IRUGO | S_IWUSR);
2497 MODULE_PARM_DESC(debug, "Debug enabled or not");
2498 module_param(vendor, ushort, 0);
2499 MODULE_PARM_DESC(vendor, "User specified vendor ID (default="
2500 __MODULE_STRING(FTDI_VID)")");
2501 module_param(product, ushort, 0);
2502 MODULE_PARM_DESC(product, "User specified product ID");
2503
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree