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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * USB FTDI SIO driver | |
3 | * | |
5c09d144 DB |
4 | * Copyright (C) 1999 - 2001 |
5 | * Greg Kroah-Hartman (greg@kroah.com) | |
1da177e4 LT |
6 | * Bill Ryder (bryder@sgi.com) |
7 | * Copyright (C) 2002 | |
8 | * Kuba Ober (kuba@mareimbrium.org) | |
9 | * | |
5c09d144 DB |
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. | |
1da177e4 LT |
14 | * |
15 | * See Documentation/usb/usb-serial.txt for more information on using this driver | |
16 | * | |
17 | * See http://ftdi-usb-sio.sourceforge.net for upto date testing info | |
18 | * and extra documentation | |
19 | * | |
20 | * (21/Jul/2004) Ian Abbott | |
21 | * Incorporated Steven Turner's code to add support for the FT2232C chip. | |
22 | * The prelimilary port to the 2.6 kernel was by Rus V. Brushkoff. I have | |
23 | * fixed a couple of things. | |
24 | * | |
25 | * (27/May/2004) Ian Abbott | |
26 | * Improved throttling code, mostly stolen from the WhiteHEAT driver. | |
27 | * | |
28 | * (26/Mar/2004) Jan Capek | |
29 | * Added PID's for ICD-U20/ICD-U40 - incircuit PIC debuggers from CCS Inc. | |
30 | * | |
31 | * (09/Feb/2004) Ian Abbott | |
32 | * Changed full name of USB-UIRT device to avoid "/" character. | |
33 | * Added FTDI's alternate PID (0x6006) for FT232/245 devices. | |
34 | * Added PID for "ELV USB Module UO100" from Stefan Frings. | |
5c09d144 | 35 | * |
1da177e4 LT |
36 | * (21/Oct/2003) Ian Abbott |
37 | * Renamed some VID/PID macros for Matrix Orbital and Perle Systems | |
38 | * devices. Removed Matrix Orbital and Perle Systems devices from the | |
39 | * 8U232AM device table, but left them in the FT232BM table, as they are | |
40 | * known to use only FT232BM. | |
41 | * | |
42 | * (17/Oct/2003) Scott Allen | |
43 | * Added vid/pid for Perle Systems UltraPort USB serial converters | |
44 | * | |
45 | * (21/Sep/2003) Ian Abbott | |
46 | * Added VID/PID for Omnidirectional Control Technology US101 USB to | |
47 | * RS-232 adapter (also rebadged as Dick Smith Electronics XH6381). | |
48 | * VID/PID supplied by Donald Gordon. | |
49 | * | |
50 | * (19/Aug/2003) Ian Abbott | |
51 | * Freed urb's transfer buffer in write bulk callback. | |
52 | * Omitted some paranoid checks in write bulk callback that don't matter. | |
53 | * Scheduled work in write bulk callback regardless of port's open count. | |
54 | * | |
55 | * (05/Aug/2003) Ian Abbott | |
56 | * Added VID/PID for ID TECH IDT1221U USB to RS-232 adapter. | |
57 | * VID/PID provided by Steve Briggs. | |
58 | * | |
59 | * (23/Jul/2003) Ian Abbott | |
60 | * Added PIDs for CrystalFontz 547, 633, 631, 635, 640 and 640 from | |
61 | * Wayne Wylupski. | |
62 | * | |
63 | * (10/Jul/2003) David Glance | |
64 | * Added PID for DSS-20 SyncStation cradle for Sony-Ericsson P800. | |
65 | * | |
66 | * (27/Jun/2003) Ian Abbott | |
67 | * Reworked the urb handling logic. We have no more pool, but dynamically | |
68 | * allocate the urb and the transfer buffer on the fly. In testing this | |
69 | * does not incure any measurable overhead. This also relies on the fact | |
70 | * that we have proper reference counting logic for urbs. I nicked this | |
71 | * from Greg KH's Visor driver. | |
5c09d144 | 72 | * |
1da177e4 LT |
73 | * (23/Jun/2003) Ian Abbott |
74 | * Reduced flip buffer pushes and corrected a data length test in | |
75 | * ftdi_read_bulk_callback. | |
76 | * Defererence pointers after any paranoid checks, not before. | |
77 | * | |
78 | * (21/Jun/2003) Erik Nygren | |
093cf723 | 79 | * Added support for Home Electronics Tira-1 IR transceiver using FT232BM chip. |
5c09d144 | 80 | * See <http://www.home-electro.com/tira1.htm>. Only operates properly |
1da177e4 LT |
81 | * at 100000 and RTS-CTS, so set custom divisor mode on startup. |
82 | * Also force the Tira-1 and USB-UIRT to only use their custom baud rates. | |
83 | * | |
84 | * (18/Jun/2003) Ian Abbott | |
85 | * Added Device ID of the USB relais from Rudolf Gugler (backported from | |
96de0e25 | 86 | * Philipp Gühring's patch for 2.5.x kernel). |
1da177e4 LT |
87 | * Moved read transfer buffer reallocation into startup function. |
88 | * Free existing write urb and transfer buffer in startup function. | |
89 | * Only use urbs in write urb pool that were successfully allocated. | |
90 | * Moved some constant macros out of functions. | |
91 | * Minor whitespace and comment changes. | |
92 | * | |
93 | * (12/Jun/2003) David Norwood | |
093cf723 | 94 | * Added support for USB-UIRT IR transceiver using 8U232AM chip. |
1da177e4 LT |
95 | * See <http://home.earthlink.net/~jrhees/USBUIRT/index.htm>. Only |
96 | * operates properly at 312500, so set custom divisor mode on startup. | |
97 | * | |
98 | * (12/Jun/2003) Ian Abbott | |
99 | * Added Sealevel SeaLINK+ 210x, 220x, 240x, 280x vid/pids from Tuan Hoang | |
100 | * - I've eliminated some that don't seem to exist! | |
101 | * Added Home Electronics Tira-1 IR transceiver pid from Chris Horn | |
102 | * Some whitespace/coding-style cleanups | |
103 | * | |
104 | * (11/Jun/2003) Ian Abbott | |
105 | * Fixed unsafe spinlock usage in ftdi_write | |
106 | * | |
107 | * (24/Feb/2003) Richard Shooter | |
108 | * Increase read buffer size to improve read speeds at higher baud rates | |
109 | * (specifically tested with up to 1Mb/sec at 1.5M baud) | |
110 | * | |
111 | * (23/Feb/2003) John Wilkins | |
112 | * Added Xon/xoff flow control (activating support in the ftdi device) | |
113 | * Added vid/pid for Videonetworks/Homechoice (UK ISP) | |
114 | * | |
115 | * (23/Feb/2003) Bill Ryder | |
116 | * Added matrix orb device vid/pids from Wayne Wylupski | |
117 | * | |
118 | * (19/Feb/2003) Ian Abbott | |
119 | * For TIOCSSERIAL, set alt_speed to 0 when ASYNC_SPD_MASK value has | |
120 | * changed to something other than ASYNC_SPD_HI, ASYNC_SPD_VHI, | |
121 | * ASYNC_SPD_SHI or ASYNC_SPD_WARP. Also, unless ASYNC_SPD_CUST is in | |
122 | * force, don't bother changing baud rate when custom_divisor has changed. | |
123 | * | |
124 | * (18/Feb/2003) Ian Abbott | |
125 | * Fixed TIOCMGET handling to include state of DTR and RTS, the state | |
126 | * of which are now saved by set_dtr() and set_rts(). | |
127 | * Fixed improper storage class for buf in set_dtr() and set_rts(). | |
128 | * Added FT232BM chip type and support for its extra baud rates (compared | |
129 | * to FT8U232AM). | |
130 | * Took account of special case divisor values for highest baud rates of | |
131 | * FT8U232AM and FT232BM. | |
132 | * For TIOCSSERIAL, forced alt_speed to 0 when ASYNC_SPD_CUST kludge used, | |
133 | * as previous alt_speed setting is now stale. | |
134 | * Moved startup code common between the startup routines for the | |
135 | * different chip types into a common subroutine. | |
136 | * | |
137 | * (17/Feb/2003) Bill Ryder | |
138 | * Added write urb buffer pool on a per device basis | |
139 | * Added more checking for open file on callbacks (fixed OOPS) | |
5c09d144 | 140 | * Added CrystalFontz 632 and 634 PIDs |
1da177e4 LT |
141 | * (thanx to CrystalFontz for the sample devices - they flushed out |
142 | * some driver bugs) | |
143 | * Minor debugging message changes | |
144 | * Added throttle, unthrottle and chars_in_buffer functions | |
145 | * Fixed FTDI_SIO (the original device) bug | |
146 | * Fixed some shutdown handling | |
5c09d144 DB |
147 | * |
148 | * | |
149 | * | |
150 | * | |
1da177e4 LT |
151 | * (07/Jun/2002) Kuba Ober |
152 | * Changed FTDI_SIO_BASE_BAUD_TO_DIVISOR macro into ftdi_baud_to_divisor | |
153 | * function. It was getting too complex. | |
154 | * Fix the divisor calculation logic which was setting divisor of 0.125 | |
155 | * instead of 0.5 for fractional parts of divisor equal to 5/8, 6/8, 7/8. | |
156 | * Also make it bump up the divisor to next integer in case of 7/8 - it's | |
157 | * a better approximation. | |
158 | * | |
159 | * (25/Jul/2002) Bill Ryder inserted Dmitri's TIOCMIWAIT patch | |
160 | * Not tested by me but it doesn't break anything I use. | |
5c09d144 | 161 | * |
1da177e4 LT |
162 | * (04/Jan/2002) Kuba Ober |
163 | * Implemented 38400 baudrate kludge, where it can be substituted with other | |
164 | * values. That's the only way to set custom baudrates. | |
165 | * Implemented TIOCSSERIAL, TIOCGSERIAL ioctl's so that setserial is happy. | |
166 | * FIXME: both baudrate things should eventually go to usbserial.c as other | |
167 | * devices may need that functionality too. Actually, it can probably be | |
168 | * merged in serial.c somehow - too many drivers repeat this code over | |
169 | * and over. | |
170 | * Fixed baudrate forgetfulness - open() used to reset baudrate to 9600 every time. | |
171 | * Divisors for baudrates are calculated by a macro. | |
172 | * Small code cleanups. Ugly whitespace changes for Plato's sake only ;-]. | |
173 | * | |
174 | * (04/Nov/2001) Bill Ryder | |
175 | * Fixed bug in read_bulk_callback where incorrect urb buffer was used. | |
176 | * Cleaned up write offset calculation | |
177 | * Added write_room since default values can be incorrect for sio | |
178 | * Changed write_bulk_callback to use same queue_task as other drivers | |
179 | * (the previous version caused panics) | |
180 | * Removed port iteration code since the device only has one I/O port and it | |
181 | * was wrong anyway. | |
5c09d144 | 182 | * |
1da177e4 LT |
183 | * (31/May/2001) gkh |
184 | * Switched from using spinlock to a semaphore, which fixes lots of problems. | |
185 | * | |
186 | * (23/May/2001) Bill Ryder | |
187 | * Added runtime debug patch (thanx Tyson D Sawyer). | |
188 | * Cleaned up comments for 8U232 | |
189 | * Added parity, framing and overrun error handling | |
190 | * Added receive break handling. | |
5c09d144 | 191 | * |
1da177e4 LT |
192 | * (04/08/2001) gb |
193 | * Identify version on module load. | |
5c09d144 | 194 | * |
1da177e4 LT |
195 | * (18/March/2001) Bill Ryder |
196 | * (Not released) | |
197 | * Added send break handling. (requires kernel patch too) | |
198 | * Fixed 8U232AM hardware RTS/CTS etc status reporting. | |
199 | * Added flipbuf fix copied from generic device | |
5c09d144 | 200 | * |
1da177e4 LT |
201 | * (12/3/2000) Bill Ryder |
202 | * Added support for 8U232AM device. | |
203 | * Moved PID and VIDs into header file only. | |
204 | * Turned on low-latency for the tty (device will do high baudrates) | |
205 | * Added shutdown routine to close files when device removed. | |
206 | * More debug and error message cleanups. | |
207 | * | |
208 | * (11/13/2000) Bill Ryder | |
209 | * Added spinlock protected open code and close code. | |
210 | * Multiple opens work (sort of - see webpage mentioned above). | |
211 | * Cleaned up comments. Removed multiple PID/VID definitions. | |
212 | * Factorised cts/dtr code | |
213 | * Made use of __FUNCTION__ in dbg's | |
5c09d144 | 214 | * |
1da177e4 LT |
215 | * (11/01/2000) Adam J. Richter |
216 | * usb_device_id table support | |
5c09d144 | 217 | * |
1da177e4 LT |
218 | * (10/05/2000) gkh |
219 | * Fixed bug with urb->dev not being set properly, now that the usb | |
220 | * core needs it. | |
5c09d144 | 221 | * |
1da177e4 LT |
222 | * (09/11/2000) gkh |
223 | * Removed DEBUG #ifdefs with call to usb_serial_debug_data | |
224 | * | |
225 | * (07/19/2000) gkh | |
226 | * Added module_init and module_exit functions to handle the fact that this | |
227 | * driver is a loadable module now. | |
228 | * | |
5c09d144 | 229 | * (04/04/2000) Bill Ryder |
1da177e4 LT |
230 | * Fixed bugs in TCGET/TCSET ioctls (by removing them - they are |
231 | * handled elsewhere in the tty io driver chain). | |
232 | * | |
5c09d144 | 233 | * (03/30/2000) Bill Ryder |
1da177e4 LT |
234 | * Implemented lots of ioctls |
235 | * Fixed a race condition in write | |
236 | * Changed some dbg's to errs | |
237 | * | |
238 | * (03/26/2000) gkh | |
239 | * Split driver up into device specific pieces. | |
240 | * | |
241 | */ | |
242 | ||
243 | /* Bill Ryder - bryder@sgi.com - wrote the FTDI_SIO implementation */ | |
244 | /* Thanx to FTDI for so kindly providing details of the protocol required */ | |
245 | /* to talk to the device */ | |
246 | /* Thanx to gkh and the rest of the usb dev group for all code I have assimilated :-) */ | |
247 | ||
1da177e4 LT |
248 | #include <linux/kernel.h> |
249 | #include <linux/errno.h> | |
250 | #include <linux/init.h> | |
251 | #include <linux/slab.h> | |
252 | #include <linux/tty.h> | |
253 | #include <linux/tty_driver.h> | |
254 | #include <linux/tty_flip.h> | |
255 | #include <linux/module.h> | |
256 | #include <linux/spinlock.h> | |
257 | #include <asm/uaccess.h> | |
258 | #include <linux/usb.h> | |
259 | #include <linux/serial.h> | |
a969888c | 260 | #include <linux/usb/serial.h> |
1da177e4 LT |
261 | #include "ftdi_sio.h" |
262 | ||
263 | /* | |
264 | * Version Information | |
265 | */ | |
8f977e42 | 266 | #define DRIVER_VERSION "v1.4.3" |
1da177e4 LT |
267 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober <kuba@mareimbrium.org>" |
268 | #define DRIVER_DESC "USB FTDI Serial Converters Driver" | |
269 | ||
270 | static int debug; | |
fdcb0a0f IA |
271 | static __u16 vendor = FTDI_VID; |
272 | static __u16 product; | |
1da177e4 | 273 | |
0ffbbe25 ON |
274 | struct ftdi_private { |
275 | ftdi_chip_type_t chip_type; | |
276 | /* type of the device, either SIO or FT8U232AM */ | |
277 | int baud_base; /* baud base clock for divisor setting */ | |
278 | int custom_divisor; /* custom_divisor kludge, this is for baud_base (different from what goes to the chip!) */ | |
279 | __u16 last_set_data_urb_value ; | |
280 | /* the last data state set - needed for doing a break */ | |
281 | int write_offset; /* This is the offset in the usb data block to write the serial data - | |
282 | * it is different between devices | |
283 | */ | |
284 | int flags; /* some ASYNC_xxxx flags are supported */ | |
285 | unsigned long last_dtr_rts; /* saved modem control outputs */ | |
286 | wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */ | |
287 | char prev_status, diff_status; /* Used for TIOCMIWAIT */ | |
288 | __u8 rx_flags; /* receive state flags (throttling) */ | |
289 | spinlock_t rx_lock; /* spinlock for receive state */ | |
290 | struct delayed_work rx_work; | |
291 | struct usb_serial_port *port; | |
292 | int rx_processed; | |
293 | unsigned long rx_bytes; | |
294 | ||
295 | __u16 interface; /* FT2232C port interface (0 for FT232/245) */ | |
296 | ||
297 | int force_baud; /* if non-zero, force the baud rate to this value */ | |
298 | int force_rtscts; /* if non-zero, force RTS-CTS to always be enabled */ | |
299 | ||
300 | spinlock_t tx_lock; /* spinlock for transmit state */ | |
301 | unsigned long tx_bytes; | |
302 | unsigned long tx_outstanding_bytes; | |
303 | unsigned long tx_outstanding_urbs; | |
304 | }; | |
305 | ||
8f977e42 IA |
306 | /* struct ftdi_sio_quirk is used by devices requiring special attention. */ |
307 | struct ftdi_sio_quirk { | |
fa91d43b | 308 | int (*probe)(struct usb_serial *); |
0ffbbe25 | 309 | void (*port_probe)(struct ftdi_private *); /* Special settings for probed ports. */ |
8f977e42 IA |
310 | }; |
311 | ||
fa91d43b | 312 | static int ftdi_olimex_probe (struct usb_serial *serial); |
0ffbbe25 ON |
313 | static void ftdi_USB_UIRT_setup (struct ftdi_private *priv); |
314 | static void ftdi_HE_TIRA1_setup (struct ftdi_private *priv); | |
8f977e42 | 315 | |
fa91d43b TL |
316 | static struct ftdi_sio_quirk ftdi_olimex_quirk = { |
317 | .probe = ftdi_olimex_probe, | |
318 | }; | |
319 | ||
8f977e42 | 320 | static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = { |
0ffbbe25 | 321 | .port_probe = ftdi_USB_UIRT_setup, |
8f977e42 IA |
322 | }; |
323 | ||
324 | static struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = { | |
0ffbbe25 | 325 | .port_probe = ftdi_HE_TIRA1_setup, |
1da177e4 LT |
326 | }; |
327 | ||
328 | /* | |
329 | * The 8U232AM has the same API as the sio except for: | |
330 | * - it can support MUCH higher baudrates; up to: | |
331 | * o 921600 for RS232 and 2000000 for RS422/485 at 48MHz | |
332 | * o 230400 at 12MHz | |
333 | * so .. 8U232AM's baudrate setting codes are different | |
334 | * - it has a two byte status code. | |
335 | * - it returns characters every 16ms (the FTDI does it every 40ms) | |
336 | * | |
337 | * the bcdDevice value is used to differentiate FT232BM and FT245BM from | |
338 | * the earlier FT8U232AM and FT8U232BM. For now, include all known VID/PID | |
339 | * combinations in both tables. | |
8f977e42 IA |
340 | * FIXME: perhaps bcdDevice can also identify 12MHz FT8U232AM devices, |
341 | * but I don't know if those ever went into mass production. [Ian Abbott] | |
1da177e4 LT |
342 | */ |
343 | ||
344 | ||
1da177e4 LT |
345 | |
346 | static struct usb_device_id id_table_combined [] = { | |
2011e924 JD |
347 | { USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) }, |
348 | { USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) }, | |
72a9f958 | 349 | { USB_DEVICE(FTDI_VID, FTDI_ACTZWAVE_PID) }, |
1da177e4 | 350 | { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) }, |
69737dfa | 351 | { USB_DEVICE(FTDI_VID, FTDI_IPLUS_PID) }, |
d099321b | 352 | { USB_DEVICE(FTDI_VID, FTDI_IPLUS2_PID) }, |
fad14a0d | 353 | { USB_DEVICE(FTDI_VID, FTDI_DMX4ALL) }, |
1da177e4 LT |
354 | { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) }, |
355 | { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) }, | |
356 | { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) }, | |
d8b21606 | 357 | { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) }, |
1da177e4 | 358 | { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) }, |
c0f8d561 | 359 | { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) }, |
1da177e4 | 360 | { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) }, |
2adb80e9 | 361 | { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) }, |
1da177e4 LT |
362 | { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) }, |
363 | { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) }, | |
364 | { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) }, | |
365 | { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) }, | |
366 | { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) }, | |
367 | { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) }, | |
368 | { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) }, | |
369 | { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) }, | |
370 | { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) }, | |
371 | { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) }, | |
372 | { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) }, | |
373 | { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) }, | |
374 | { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) }, | |
8f977e42 IA |
375 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) }, |
376 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) }, | |
377 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) }, | |
378 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) }, | |
379 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) }, | |
380 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) }, | |
381 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) }, | |
382 | { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) }, | |
1da177e4 | 383 | { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) }, |
274a4bbc | 384 | { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) }, |
868e440d | 385 | { USB_DEVICE(FTDI_VID, FTDI_USBX_707_PID) }, |
1da177e4 LT |
386 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) }, |
387 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) }, | |
388 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) }, | |
389 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) }, | |
a1484827 | 390 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2106_PID) }, |
1da177e4 LT |
391 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) }, |
392 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) }, | |
393 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) }, | |
394 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) }, | |
395 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) }, | |
396 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) }, | |
397 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) }, | |
398 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) }, | |
399 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) }, | |
400 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) }, | |
401 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) }, | |
402 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) }, | |
403 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) }, | |
404 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) }, | |
405 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) }, | |
406 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) }, | |
407 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) }, | |
408 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) }, | |
409 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) }, | |
410 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) }, | |
411 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) }, | |
412 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) }, | |
413 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) }, | |
414 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) }, | |
415 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) }, | |
416 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) }, | |
417 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) }, | |
418 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) }, | |
419 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) }, | |
420 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) }, | |
421 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) }, | |
422 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) }, | |
423 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) }, | |
424 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) }, | |
425 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) }, | |
426 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) }, | |
427 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) }, | |
428 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) }, | |
429 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) }, | |
430 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) }, | |
431 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) }, | |
432 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) }, | |
433 | { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) }, | |
434 | { USB_DEVICE(OCT_VID, OCT_US101_PID) }, | |
8f977e42 IA |
435 | { USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID), |
436 | .driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk }, | |
437 | { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID), | |
438 | .driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk }, | |
1da177e4 LT |
439 | { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) }, |
440 | { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) }, | |
441 | { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) }, | |
442 | { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) }, | |
8f977e42 IA |
443 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) }, |
444 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) }, | |
445 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) }, | |
446 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) }, | |
447 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) }, | |
448 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) }, | |
449 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) }, | |
450 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) }, | |
451 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) }, | |
452 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) }, | |
453 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) }, | |
454 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) }, | |
455 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) }, | |
456 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) }, | |
457 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) }, | |
458 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) }, | |
1da177e4 | 459 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) }, |
47900743 | 460 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) }, |
e6ac4a40 IA |
461 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) }, |
462 | { USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) }, | |
207c47e1 | 463 | { USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) }, |
bde62185 | 464 | { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) }, |
4eaf60e0 TS |
465 | { USB_DEVICE(FTDI_VID, FTDI_IBS_US485_PID) }, |
466 | { USB_DEVICE(FTDI_VID, FTDI_IBS_PICPRO_PID) }, | |
467 | { USB_DEVICE(FTDI_VID, FTDI_IBS_PCMCIA_PID) }, | |
468 | { USB_DEVICE(FTDI_VID, FTDI_IBS_PK1_PID) }, | |
469 | { USB_DEVICE(FTDI_VID, FTDI_IBS_RS232MON_PID) }, | |
470 | { USB_DEVICE(FTDI_VID, FTDI_IBS_APP70_PID) }, | |
471 | { USB_DEVICE(FTDI_VID, FTDI_IBS_PEDO_PID) }, | |
472 | { USB_DEVICE(FTDI_VID, FTDI_IBS_PROD_PID) }, | |
e6ac4a40 IA |
473 | /* |
474 | * These will probably use user-space drivers. Uncomment them if | |
475 | * you need them or use the user-specified vendor/product module | |
476 | * parameters (see ftdi_sio.h for the numbers). Make a fuss if | |
477 | * you think the driver should recognize any of them by default. | |
478 | */ | |
479 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) }, */ | |
480 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) }, */ | |
481 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) }, */ | |
482 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) }, */ | |
483 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) }, */ | |
484 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) }, */ | |
485 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) }, */ | |
486 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) }, */ | |
487 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) }, */ | |
488 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) }, */ | |
489 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) }, */ | |
e6ac4a40 IA |
490 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) }, */ |
491 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) }, */ | |
492 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) }, */ | |
493 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) }, */ | |
494 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) }, */ | |
495 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) }, */ | |
496 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) }, */ | |
497 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) }, */ | |
5c09d144 DB |
498 | { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) }, |
499 | { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) }, | |
500 | { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) }, | |
501 | { USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) }, | |
502 | { USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) }, | |
503 | { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) }, | |
504 | { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) }, | |
ec434e9b | 505 | { USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) }, |
1da177e4 LT |
506 | { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) }, |
507 | { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) }, | |
508 | { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) }, | |
509 | { USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) }, | |
e6ac4a40 | 510 | { USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) }, |
1da177e4 | 511 | { USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) }, |
ef31fec0 | 512 | { USB_DEVICE(TTI_VID, TTI_QL355P_PID) }, |
6f92872c | 513 | { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) }, |
1da177e4 LT |
514 | { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) }, |
515 | { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) }, | |
516 | { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) }, | |
517 | { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) }, | |
6f92872c IA |
518 | { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) }, |
519 | { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) }, | |
e6ac4a40 IA |
520 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) }, |
521 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) }, | |
522 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) }, | |
523 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) }, | |
524 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) }, | |
525 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) }, | |
526 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) }, | |
527 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) }, | |
6f92872c | 528 | { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) }, |
8f977e42 | 529 | { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) }, |
34d1a8aa IA |
530 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) }, |
531 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_YS_PID) }, | |
9b1513d9 IA |
532 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) }, |
533 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) }, | |
34d1a8aa IA |
534 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_IC_PID) }, |
535 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_DB9_PID) }, | |
536 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_RS232_PID) }, | |
537 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y9_PID) }, | |
740a4282 IA |
538 | { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) }, |
539 | { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) }, | |
9b1513d9 | 540 | { USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) }, |
c1f8ea7d SH |
541 | { USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) }, |
542 | { USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) }, | |
c9c7746d RS |
543 | { USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) }, |
544 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) }, | |
09c280a2 | 545 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) }, |
c9c7746d | 546 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) }, |
09c280a2 | 547 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HRC_PID) }, |
b4723ae3 IA |
548 | { USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) }, |
549 | { USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) }, | |
effac8be | 550 | { USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) }, |
641adaae | 551 | { USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) }, |
7e1c0b86 | 552 | { USB_DEVICE(FTDI_VID, FTDI_ECLO_COM_1WIRE_PID) }, |
a94b52ac IA |
553 | { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) }, |
554 | { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) }, | |
ce40d290 | 555 | { USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) }, |
cdd3b156 | 556 | { USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) }, |
7e0258fd | 557 | { USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) }, |
bf58fbd5 | 558 | { USB_DEVICE(ICOM_ID1_VID, ICOM_ID1_PID) }, |
62a13db3 | 559 | { USB_DEVICE(PAPOUCH_VID, PAPOUCH_TMU_PID) }, |
20a0f47e | 560 | { USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) }, |
eb79b4fd | 561 | { USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) }, |
48437486 | 562 | { USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) }, |
e1979fef | 563 | { USB_DEVICE(TESTO_VID, TESTO_USB_INTERFACE_PID) }, |
eaede2cb | 564 | { USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) }, |
9978f9e1 IA |
565 | { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) }, |
566 | { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) }, | |
567 | { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) }, | |
40c36092 | 568 | { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) }, |
822c7ef4 | 569 | { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) }, |
762e92fa | 570 | { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) }, |
d7fde2d6 | 571 | { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) }, |
fa91d43b TL |
572 | { USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID), |
573 | .driver_info = (kernel_ulong_t)&ftdi_olimex_quirk }, | |
fdcb0a0f IA |
574 | { }, /* Optional parameter entry */ |
575 | { } /* Terminating entry */ | |
1da177e4 LT |
576 | }; |
577 | ||
578 | MODULE_DEVICE_TABLE (usb, id_table_combined); | |
579 | ||
580 | static struct usb_driver ftdi_driver = { | |
581 | .name = "ftdi_sio", | |
582 | .probe = usb_serial_probe, | |
583 | .disconnect = usb_serial_disconnect, | |
584 | .id_table = id_table_combined, | |
5c09d144 | 585 | .no_dynamic_id = 1, |
1da177e4 LT |
586 | }; |
587 | ||
4c4c9432 | 588 | static const char *ftdi_chip_name[] = { |
1da177e4 LT |
589 | [SIO] = "SIO", /* the serial part of FT8U100AX */ |
590 | [FT8U232AM] = "FT8U232AM", | |
591 | [FT232BM] = "FT232BM", | |
592 | [FT2232C] = "FT2232C", | |
d8b21606 | 593 | [FT232RL] = "FT232RL", |
1da177e4 LT |
594 | }; |
595 | ||
596 | ||
597 | /* Constants for read urb and write urb */ | |
598 | #define BUFSZ 512 | |
599 | #define PKTSZ 64 | |
600 | ||
601 | /* rx_flags */ | |
602 | #define THROTTLED 0x01 | |
603 | #define ACTUALLY_THROTTLED 0x02 | |
604 | ||
1da177e4 LT |
605 | /* Used for TIOCMIWAIT */ |
606 | #define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD) | |
607 | #define FTDI_STATUS_B1_MASK (FTDI_RS_BI) | |
608 | /* End TIOCMIWAIT */ | |
609 | ||
610 | #define FTDI_IMPL_ASYNC_FLAGS = ( ASYNC_SPD_HI | ASYNC_SPD_VHI \ | |
611 | ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP ) | |
612 | ||
613 | /* function prototypes for a FTDI serial converter */ | |
8f977e42 | 614 | static int ftdi_sio_probe (struct usb_serial *serial, const struct usb_device_id *id); |
1da177e4 | 615 | static void ftdi_shutdown (struct usb_serial *serial); |
12bdbe03 JR |
616 | static int ftdi_sio_port_probe (struct usb_serial_port *port); |
617 | static int ftdi_sio_port_remove (struct usb_serial_port *port); | |
1da177e4 LT |
618 | static int ftdi_open (struct usb_serial_port *port, struct file *filp); |
619 | static void ftdi_close (struct usb_serial_port *port, struct file *filp); | |
620 | static int ftdi_write (struct usb_serial_port *port, const unsigned char *buf, int count); | |
621 | static int ftdi_write_room (struct usb_serial_port *port); | |
622 | static int ftdi_chars_in_buffer (struct usb_serial_port *port); | |
7d12e780 DH |
623 | static void ftdi_write_bulk_callback (struct urb *urb); |
624 | static void ftdi_read_bulk_callback (struct urb *urb); | |
c4028958 | 625 | static void ftdi_process_read (struct work_struct *work); |
606d099c | 626 | static void ftdi_set_termios (struct usb_serial_port *port, struct ktermios * old); |
1da177e4 LT |
627 | static int ftdi_tiocmget (struct usb_serial_port *port, struct file *file); |
628 | static int ftdi_tiocmset (struct usb_serial_port *port, struct file * file, unsigned int set, unsigned int clear); | |
629 | static int ftdi_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg); | |
630 | static void ftdi_break_ctl (struct usb_serial_port *port, int break_state ); | |
631 | static void ftdi_throttle (struct usb_serial_port *port); | |
632 | static void ftdi_unthrottle (struct usb_serial_port *port); | |
633 | ||
634 | static unsigned short int ftdi_232am_baud_base_to_divisor (int baud, int base); | |
635 | static unsigned short int ftdi_232am_baud_to_divisor (int baud); | |
636 | static __u32 ftdi_232bm_baud_base_to_divisor (int baud, int base); | |
637 | static __u32 ftdi_232bm_baud_to_divisor (int baud); | |
638 | ||
ea65370d | 639 | static struct usb_serial_driver ftdi_sio_device = { |
18fcac35 GKH |
640 | .driver = { |
641 | .owner = THIS_MODULE, | |
269bda1c | 642 | .name = "ftdi_sio", |
18fcac35 | 643 | }, |
269bda1c | 644 | .description = "FTDI USB Serial Device", |
d9b1b787 | 645 | .usb_driver = &ftdi_driver , |
8f977e42 | 646 | .id_table = id_table_combined, |
1da177e4 LT |
647 | .num_interrupt_in = 0, |
648 | .num_bulk_in = 1, | |
649 | .num_bulk_out = 1, | |
650 | .num_ports = 1, | |
8f977e42 | 651 | .probe = ftdi_sio_probe, |
12bdbe03 JR |
652 | .port_probe = ftdi_sio_port_probe, |
653 | .port_remove = ftdi_sio_port_remove, | |
1da177e4 LT |
654 | .open = ftdi_open, |
655 | .close = ftdi_close, | |
656 | .throttle = ftdi_throttle, | |
657 | .unthrottle = ftdi_unthrottle, | |
658 | .write = ftdi_write, | |
659 | .write_room = ftdi_write_room, | |
660 | .chars_in_buffer = ftdi_chars_in_buffer, | |
661 | .read_bulk_callback = ftdi_read_bulk_callback, | |
662 | .write_bulk_callback = ftdi_write_bulk_callback, | |
663 | .tiocmget = ftdi_tiocmget, | |
664 | .tiocmset = ftdi_tiocmset, | |
665 | .ioctl = ftdi_ioctl, | |
666 | .set_termios = ftdi_set_termios, | |
667 | .break_ctl = ftdi_break_ctl, | |
1da177e4 LT |
668 | .shutdown = ftdi_shutdown, |
669 | }; | |
670 | ||
1da177e4 LT |
671 | |
672 | #define WDR_TIMEOUT 5000 /* default urb timeout */ | |
279e1545 | 673 | #define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */ |
1da177e4 LT |
674 | |
675 | /* High and low are for DTR, RTS etc etc */ | |
676 | #define HIGH 1 | |
677 | #define LOW 0 | |
678 | ||
22465400 IA |
679 | /* number of outstanding urbs to prevent userspace DoS from happening */ |
680 | #define URB_UPPER_LIMIT 42 | |
681 | ||
1da177e4 LT |
682 | /* |
683 | * *************************************************************************** | |
fa91d43b | 684 | * Utility functions |
1da177e4 LT |
685 | * *************************************************************************** |
686 | */ | |
687 | ||
688 | static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base) | |
689 | { | |
690 | unsigned short int divisor; | |
691 | int divisor3 = base / 2 / baud; // divisor shifted 3 bits to the left | |
692 | if ((divisor3 & 0x7) == 7) divisor3 ++; // round x.7/8 up to x+1 | |
693 | divisor = divisor3 >> 3; | |
694 | divisor3 &= 0x7; | |
695 | if (divisor3 == 1) divisor |= 0xc000; else // 0.125 | |
696 | if (divisor3 >= 4) divisor |= 0x4000; else // 0.5 | |
697 | if (divisor3 != 0) divisor |= 0x8000; // 0.25 | |
698 | if (divisor == 1) divisor = 0; /* special case for maximum baud rate */ | |
699 | return divisor; | |
700 | } | |
701 | ||
702 | static unsigned short int ftdi_232am_baud_to_divisor(int baud) | |
703 | { | |
704 | return(ftdi_232am_baud_base_to_divisor(baud, 48000000)); | |
705 | } | |
706 | ||
707 | static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base) | |
708 | { | |
709 | static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 }; | |
710 | __u32 divisor; | |
711 | int divisor3 = base / 2 / baud; // divisor shifted 3 bits to the left | |
712 | divisor = divisor3 >> 3; | |
713 | divisor |= (__u32)divfrac[divisor3 & 0x7] << 14; | |
714 | /* Deal with special cases for highest baud rates. */ | |
715 | if (divisor == 1) divisor = 0; else // 1.0 | |
716 | if (divisor == 0x4001) divisor = 1; // 1.5 | |
717 | return divisor; | |
718 | } | |
719 | ||
720 | static __u32 ftdi_232bm_baud_to_divisor(int baud) | |
721 | { | |
722 | return(ftdi_232bm_baud_base_to_divisor(baud, 48000000)); | |
723 | } | |
724 | ||
74ede0ff IA |
725 | #define set_mctrl(port, set) update_mctrl((port), (set), 0) |
726 | #define clear_mctrl(port, clear) update_mctrl((port), 0, (clear)) | |
727 | ||
728 | static int update_mctrl(struct usb_serial_port *port, unsigned int set, unsigned int clear) | |
1da177e4 LT |
729 | { |
730 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
731 | char *buf; | |
74ede0ff | 732 | unsigned urb_value; |
1da177e4 | 733 | int rv; |
1da177e4 | 734 | |
74ede0ff IA |
735 | if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) { |
736 | dbg("%s - DTR|RTS not being set|cleared", __FUNCTION__); | |
737 | return 0; /* no change */ | |
738 | } | |
1da177e4 | 739 | |
1da177e4 | 740 | buf = kmalloc(1, GFP_NOIO); |
74ede0ff | 741 | if (!buf) { |
1da177e4 | 742 | return -ENOMEM; |
1da177e4 | 743 | } |
74ede0ff IA |
744 | |
745 | clear &= ~set; /* 'set' takes precedence over 'clear' */ | |
746 | urb_value = 0; | |
747 | if (clear & TIOCM_DTR) | |
748 | urb_value |= FTDI_SIO_SET_DTR_LOW; | |
749 | if (clear & TIOCM_RTS) | |
750 | urb_value |= FTDI_SIO_SET_RTS_LOW; | |
751 | if (set & TIOCM_DTR) | |
752 | urb_value |= FTDI_SIO_SET_DTR_HIGH; | |
753 | if (set & TIOCM_RTS) | |
754 | urb_value |= FTDI_SIO_SET_RTS_HIGH; | |
1da177e4 LT |
755 | rv = usb_control_msg(port->serial->dev, |
756 | usb_sndctrlpipe(port->serial->dev, 0), | |
5c09d144 | 757 | FTDI_SIO_SET_MODEM_CTRL_REQUEST, |
1da177e4 | 758 | FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE, |
74ede0ff | 759 | urb_value, priv->interface, |
1da177e4 LT |
760 | buf, 0, WDR_TIMEOUT); |
761 | ||
762 | kfree(buf); | |
74ede0ff IA |
763 | if (rv < 0) { |
764 | err("%s Error from MODEM_CTRL urb: DTR %s, RTS %s", | |
765 | __FUNCTION__, | |
766 | (set & TIOCM_DTR) ? "HIGH" : | |
767 | (clear & TIOCM_DTR) ? "LOW" : "unchanged", | |
768 | (set & TIOCM_RTS) ? "HIGH" : | |
769 | (clear & TIOCM_RTS) ? "LOW" : "unchanged"); | |
770 | } else { | |
771 | dbg("%s - DTR %s, RTS %s", __FUNCTION__, | |
772 | (set & TIOCM_DTR) ? "HIGH" : | |
773 | (clear & TIOCM_DTR) ? "LOW" : "unchanged", | |
774 | (set & TIOCM_RTS) ? "HIGH" : | |
775 | (clear & TIOCM_RTS) ? "LOW" : "unchanged"); | |
776 | priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set; | |
777 | } | |
1da177e4 LT |
778 | return rv; |
779 | } | |
780 | ||
781 | ||
782 | static __u32 get_ftdi_divisor(struct usb_serial_port * port); | |
783 | ||
784 | ||
785 | static int change_speed(struct usb_serial_port *port) | |
786 | { | |
787 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
788 | char *buf; | |
789 | __u16 urb_value; | |
790 | __u16 urb_index; | |
791 | __u32 urb_index_value; | |
792 | int rv; | |
793 | ||
794 | buf = kmalloc(1, GFP_NOIO); | |
795 | if (!buf) | |
796 | return -ENOMEM; | |
797 | ||
798 | urb_index_value = get_ftdi_divisor(port); | |
799 | urb_value = (__u16)urb_index_value; | |
800 | urb_index = (__u16)(urb_index_value >> 16); | |
801 | if (priv->interface) { /* FT2232C */ | |
802 | urb_index = (__u16)((urb_index << 8) | priv->interface); | |
803 | } | |
5c09d144 | 804 | |
1da177e4 LT |
805 | rv = usb_control_msg(port->serial->dev, |
806 | usb_sndctrlpipe(port->serial->dev, 0), | |
807 | FTDI_SIO_SET_BAUDRATE_REQUEST, | |
808 | FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE, | |
809 | urb_value, urb_index, | |
279e1545 | 810 | buf, 0, WDR_SHORT_TIMEOUT); |
1da177e4 LT |
811 | |
812 | kfree(buf); | |
813 | return rv; | |
814 | } | |
815 | ||
816 | ||
817 | static __u32 get_ftdi_divisor(struct usb_serial_port * port) | |
818 | { /* get_ftdi_divisor */ | |
819 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
820 | __u32 div_value = 0; | |
821 | int div_okay = 1; | |
822 | int baud; | |
823 | ||
824 | /* | |
825 | * The logic involved in setting the baudrate can be cleanly split in 3 steps. | |
826 | * Obtaining the actual baud rate is a little tricky since unix traditionally | |
827 | * somehow ignored the possibility to set non-standard baud rates. | |
828 | * 1. Standard baud rates are set in tty->termios->c_cflag | |
829 | * 2. If these are not enough, you can set any speed using alt_speed as follows: | |
830 | * - set tty->termios->c_cflag speed to B38400 | |
831 | * - set your real speed in tty->alt_speed; it gets ignored when | |
832 | * alt_speed==0, (or) | |
833 | * - call TIOCSSERIAL ioctl with (struct serial_struct) set as follows: | |
834 | * flags & ASYNC_SPD_MASK == ASYNC_SPD_[HI, VHI, SHI, WARP], this just | |
835 | * sets alt_speed to (HI: 57600, VHI: 115200, SHI: 230400, WARP: 460800) | |
836 | * ** Steps 1, 2 are done courtesy of tty_get_baud_rate | |
837 | * 3. You can also set baud rate by setting custom divisor as follows | |
838 | * - set tty->termios->c_cflag speed to B38400 | |
839 | * - call TIOCSSERIAL ioctl with (struct serial_struct) set as follows: | |
840 | * o flags & ASYNC_SPD_MASK == ASYNC_SPD_CUST | |
841 | * o custom_divisor set to baud_base / your_new_baudrate | |
842 | * ** Step 3 is done courtesy of code borrowed from serial.c - I should really | |
843 | * spend some time and separate+move this common code to serial.c, it is | |
844 | * replicated in nearly every serial driver you see. | |
845 | */ | |
846 | ||
847 | /* 1. Get the baud rate from the tty settings, this observes alt_speed hack */ | |
848 | ||
849 | baud = tty_get_baud_rate(port->tty); | |
850 | dbg("%s - tty_get_baud_rate reports speed %d", __FUNCTION__, baud); | |
851 | ||
852 | /* 2. Observe async-compatible custom_divisor hack, update baudrate if needed */ | |
853 | ||
854 | if (baud == 38400 && | |
855 | ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) && | |
856 | (priv->custom_divisor)) { | |
857 | baud = priv->baud_base / priv->custom_divisor; | |
858 | dbg("%s - custom divisor %d sets baud rate to %d", __FUNCTION__, priv->custom_divisor, baud); | |
859 | } | |
860 | ||
861 | /* 3. Convert baudrate to device-specific divisor */ | |
862 | ||
5c09d144 | 863 | if (!baud) baud = 9600; |
1da177e4 LT |
864 | switch(priv->chip_type) { |
865 | case SIO: /* SIO chip */ | |
866 | switch(baud) { | |
867 | case 300: div_value = ftdi_sio_b300; break; | |
868 | case 600: div_value = ftdi_sio_b600; break; | |
869 | case 1200: div_value = ftdi_sio_b1200; break; | |
870 | case 2400: div_value = ftdi_sio_b2400; break; | |
871 | case 4800: div_value = ftdi_sio_b4800; break; | |
872 | case 9600: div_value = ftdi_sio_b9600; break; | |
873 | case 19200: div_value = ftdi_sio_b19200; break; | |
874 | case 38400: div_value = ftdi_sio_b38400; break; | |
875 | case 57600: div_value = ftdi_sio_b57600; break; | |
876 | case 115200: div_value = ftdi_sio_b115200; break; | |
877 | } /* baud */ | |
878 | if (div_value == 0) { | |
5c09d144 | 879 | dbg("%s - Baudrate (%d) requested is not supported", __FUNCTION__, baud); |
1da177e4 LT |
880 | div_value = ftdi_sio_b9600; |
881 | div_okay = 0; | |
882 | } | |
883 | break; | |
884 | case FT8U232AM: /* 8U232AM chip */ | |
885 | if (baud <= 3000000) { | |
886 | div_value = ftdi_232am_baud_to_divisor(baud); | |
887 | } else { | |
888 | dbg("%s - Baud rate too high!", __FUNCTION__); | |
889 | div_value = ftdi_232am_baud_to_divisor(9600); | |
890 | div_okay = 0; | |
891 | } | |
892 | break; | |
893 | case FT232BM: /* FT232BM chip */ | |
894 | case FT2232C: /* FT2232C chip */ | |
3b009c63 | 895 | case FT232RL: |
1da177e4 LT |
896 | if (baud <= 3000000) { |
897 | div_value = ftdi_232bm_baud_to_divisor(baud); | |
898 | } else { | |
899 | dbg("%s - Baud rate too high!", __FUNCTION__); | |
900 | div_value = ftdi_232bm_baud_to_divisor(9600); | |
901 | div_okay = 0; | |
902 | } | |
903 | break; | |
904 | } /* priv->chip_type */ | |
905 | ||
906 | if (div_okay) { | |
907 | dbg("%s - Baud rate set to %d (divisor 0x%lX) on chip %s", | |
908 | __FUNCTION__, baud, (unsigned long)div_value, | |
909 | ftdi_chip_name[priv->chip_type]); | |
910 | } | |
911 | ||
912 | return(div_value); | |
913 | } | |
914 | ||
915 | ||
916 | static int get_serial_info(struct usb_serial_port * port, struct serial_struct __user * retinfo) | |
917 | { | |
918 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
919 | struct serial_struct tmp; | |
920 | ||
921 | if (!retinfo) | |
922 | return -EFAULT; | |
923 | memset(&tmp, 0, sizeof(tmp)); | |
924 | tmp.flags = priv->flags; | |
925 | tmp.baud_base = priv->baud_base; | |
926 | tmp.custom_divisor = priv->custom_divisor; | |
927 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
928 | return -EFAULT; | |
929 | return 0; | |
930 | } /* get_serial_info */ | |
931 | ||
932 | ||
933 | static int set_serial_info(struct usb_serial_port * port, struct serial_struct __user * newinfo) | |
934 | { /* set_serial_info */ | |
935 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
936 | struct serial_struct new_serial; | |
937 | struct ftdi_private old_priv; | |
938 | ||
939 | if (copy_from_user(&new_serial, newinfo, sizeof(new_serial))) | |
940 | return -EFAULT; | |
941 | old_priv = * priv; | |
942 | ||
943 | /* Do error checking and permission checking */ | |
944 | ||
945 | if (!capable(CAP_SYS_ADMIN)) { | |
946 | if (((new_serial.flags & ~ASYNC_USR_MASK) != | |
947 | (priv->flags & ~ASYNC_USR_MASK))) | |
948 | return -EPERM; | |
949 | priv->flags = ((priv->flags & ~ASYNC_USR_MASK) | | |
950 | (new_serial.flags & ASYNC_USR_MASK)); | |
951 | priv->custom_divisor = new_serial.custom_divisor; | |
952 | goto check_and_exit; | |
953 | } | |
954 | ||
955 | if ((new_serial.baud_base != priv->baud_base) && | |
956 | (new_serial.baud_base < 9600)) | |
957 | return -EINVAL; | |
958 | ||
959 | /* Make the changes - these are privileged changes! */ | |
960 | ||
961 | priv->flags = ((priv->flags & ~ASYNC_FLAGS) | | |
5c09d144 | 962 | (new_serial.flags & ASYNC_FLAGS)); |
1da177e4 LT |
963 | priv->custom_divisor = new_serial.custom_divisor; |
964 | ||
965 | port->tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0; | |
966 | ||
967 | check_and_exit: | |
968 | if ((old_priv.flags & ASYNC_SPD_MASK) != | |
969 | (priv->flags & ASYNC_SPD_MASK)) { | |
970 | if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) | |
971 | port->tty->alt_speed = 57600; | |
972 | else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
973 | port->tty->alt_speed = 115200; | |
974 | else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
975 | port->tty->alt_speed = 230400; | |
976 | else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
977 | port->tty->alt_speed = 460800; | |
978 | else | |
979 | port->tty->alt_speed = 0; | |
980 | } | |
981 | if (((old_priv.flags & ASYNC_SPD_MASK) != | |
982 | (priv->flags & ASYNC_SPD_MASK)) || | |
983 | (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) && | |
984 | (old_priv.custom_divisor != priv->custom_divisor))) { | |
985 | change_speed(port); | |
986 | } | |
5c09d144 | 987 | |
1da177e4 LT |
988 | return (0); |
989 | ||
990 | } /* set_serial_info */ | |
991 | ||
992 | ||
8f977e42 IA |
993 | /* Determine type of FTDI chip based on USB config and descriptor. */ |
994 | static void ftdi_determine_type(struct usb_serial_port *port) | |
995 | { | |
996 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
997 | struct usb_serial *serial = port->serial; | |
998 | struct usb_device *udev = serial->dev; | |
999 | unsigned version; | |
1000 | unsigned interfaces; | |
1001 | ||
1002 | /* Assume it is not the original SIO device for now. */ | |
f5e09b7c | 1003 | priv->baud_base = 48000000 / 2; |
8f977e42 IA |
1004 | priv->write_offset = 0; |
1005 | ||
1006 | version = le16_to_cpu(udev->descriptor.bcdDevice); | |
1007 | interfaces = udev->actconfig->desc.bNumInterfaces; | |
1008 | dbg("%s: bcdDevice = 0x%x, bNumInterfaces = %u", __FUNCTION__, | |
1009 | version, interfaces); | |
1010 | if (interfaces > 1) { | |
1011 | int inter; | |
1012 | ||
1013 | /* Multiple interfaces. Assume FT2232C. */ | |
1014 | priv->chip_type = FT2232C; | |
1015 | /* Determine interface code. */ | |
1016 | inter = serial->interface->altsetting->desc.bInterfaceNumber; | |
1017 | if (inter == 0) { | |
1018 | priv->interface = PIT_SIOA; | |
1019 | } else { | |
1020 | priv->interface = PIT_SIOB; | |
1021 | } | |
1022 | /* BM-type devices have a bug where bcdDevice gets set | |
1023 | * to 0x200 when iSerialNumber is 0. */ | |
1024 | if (version < 0x500) { | |
1025 | dbg("%s: something fishy - bcdDevice too low for multi-interface device", | |
1026 | __FUNCTION__); | |
1027 | } | |
1028 | } else if (version < 0x200) { | |
1029 | /* Old device. Assume its the original SIO. */ | |
1030 | priv->chip_type = SIO; | |
1031 | priv->baud_base = 12000000 / 16; | |
1032 | priv->write_offset = 1; | |
1033 | } else if (version < 0x400) { | |
1034 | /* Assume its an FT8U232AM (or FT8U245AM) */ | |
1035 | /* (It might be a BM because of the iSerialNumber bug, | |
1036 | * but it will still work as an AM device.) */ | |
1037 | priv->chip_type = FT8U232AM; | |
3b009c63 | 1038 | } else if (version < 0x600) { |
8f977e42 IA |
1039 | /* Assume its an FT232BM (or FT245BM) */ |
1040 | priv->chip_type = FT232BM; | |
3b009c63 DB |
1041 | } else { |
1042 | /* Assume its an FT232R */ | |
1043 | priv->chip_type = FT232RL; | |
8f977e42 IA |
1044 | } |
1045 | info("Detected %s", ftdi_chip_name[priv->chip_type]); | |
1046 | } | |
1047 | ||
1048 | ||
1da177e4 LT |
1049 | /* |
1050 | * *************************************************************************** | |
1051 | * Sysfs Attribute | |
1052 | * *************************************************************************** | |
1053 | */ | |
1054 | ||
060b8845 | 1055 | static ssize_t show_latency_timer(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
1056 | { |
1057 | struct usb_serial_port *port = to_usb_serial_port(dev); | |
1058 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
12bdbe03 | 1059 | struct usb_device *udev = port->serial->dev; |
1da177e4 LT |
1060 | unsigned short latency = 0; |
1061 | int rv = 0; | |
5c09d144 | 1062 | |
5c09d144 | 1063 | |
1da177e4 | 1064 | dbg("%s",__FUNCTION__); |
5c09d144 | 1065 | |
1da177e4 LT |
1066 | rv = usb_control_msg(udev, |
1067 | usb_rcvctrlpipe(udev, 0), | |
1068 | FTDI_SIO_GET_LATENCY_TIMER_REQUEST, | |
1069 | FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE, | |
5c09d144 | 1070 | 0, priv->interface, |
1da177e4 | 1071 | (char*) &latency, 1, WDR_TIMEOUT); |
5c09d144 | 1072 | |
1da177e4 | 1073 | if (rv < 0) { |
898eb71c | 1074 | dev_err(dev, "Unable to read latency timer: %i\n", rv); |
1da177e4 LT |
1075 | return -EIO; |
1076 | } | |
1077 | return sprintf(buf, "%i\n", latency); | |
1078 | } | |
1079 | ||
1080 | /* Write a new value of the latency timer, in units of milliseconds. */ | |
060b8845 | 1081 | static ssize_t store_latency_timer(struct device *dev, struct device_attribute *attr, const char *valbuf, |
1da177e4 LT |
1082 | size_t count) |
1083 | { | |
1084 | struct usb_serial_port *port = to_usb_serial_port(dev); | |
1085 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
12bdbe03 | 1086 | struct usb_device *udev = port->serial->dev; |
1da177e4 LT |
1087 | char buf[1]; |
1088 | int v = simple_strtoul(valbuf, NULL, 10); | |
1089 | int rv = 0; | |
5c09d144 | 1090 | |
1da177e4 | 1091 | dbg("%s: setting latency timer = %i", __FUNCTION__, v); |
5c09d144 | 1092 | |
1da177e4 LT |
1093 | rv = usb_control_msg(udev, |
1094 | usb_sndctrlpipe(udev, 0), | |
1095 | FTDI_SIO_SET_LATENCY_TIMER_REQUEST, | |
1096 | FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE, | |
5c09d144 | 1097 | v, priv->interface, |
1da177e4 | 1098 | buf, 0, WDR_TIMEOUT); |
5c09d144 | 1099 | |
1da177e4 | 1100 | if (rv < 0) { |
898eb71c | 1101 | dev_err(dev, "Unable to write latency timer: %i\n", rv); |
1da177e4 LT |
1102 | return -EIO; |
1103 | } | |
5c09d144 | 1104 | |
1da177e4 LT |
1105 | return count; |
1106 | } | |
1107 | ||
1108 | /* Write an event character directly to the FTDI register. The ASCII | |
1109 | value is in the low 8 bits, with the enable bit in the 9th bit. */ | |
060b8845 | 1110 | static ssize_t store_event_char(struct device *dev, struct device_attribute *attr, const char *valbuf, |
1da177e4 LT |
1111 | size_t count) |
1112 | { | |
1113 | struct usb_serial_port *port = to_usb_serial_port(dev); | |
1114 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
12bdbe03 | 1115 | struct usb_device *udev = port->serial->dev; |
1da177e4 LT |
1116 | char buf[1]; |
1117 | int v = simple_strtoul(valbuf, NULL, 10); | |
1118 | int rv = 0; | |
5c09d144 | 1119 | |
1da177e4 | 1120 | dbg("%s: setting event char = %i", __FUNCTION__, v); |
5c09d144 | 1121 | |
1da177e4 LT |
1122 | rv = usb_control_msg(udev, |
1123 | usb_sndctrlpipe(udev, 0), | |
1124 | FTDI_SIO_SET_EVENT_CHAR_REQUEST, | |
1125 | FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE, | |
5c09d144 | 1126 | v, priv->interface, |
1da177e4 | 1127 | buf, 0, WDR_TIMEOUT); |
5c09d144 | 1128 | |
1da177e4 LT |
1129 | if (rv < 0) { |
1130 | dbg("Unable to write event character: %i", rv); | |
1131 | return -EIO; | |
1132 | } | |
5c09d144 | 1133 | |
1da177e4 LT |
1134 | return count; |
1135 | } | |
1136 | ||
1137 | static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer, store_latency_timer); | |
1138 | static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char); | |
1139 | ||
12bdbe03 | 1140 | static int create_sysfs_attrs(struct usb_serial_port *port) |
13f4db9e | 1141 | { |
12bdbe03 | 1142 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
13f4db9e | 1143 | int retval = 0; |
1da177e4 LT |
1144 | |
1145 | dbg("%s",__FUNCTION__); | |
13f4db9e | 1146 | |
1da177e4 LT |
1147 | /* XXX I've no idea if the original SIO supports the event_char |
1148 | * sysfs parameter, so I'm playing it safe. */ | |
1149 | if (priv->chip_type != SIO) { | |
1150 | dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]); | |
12bdbe03 | 1151 | retval = device_create_file(&port->dev, &dev_attr_event_char); |
13f4db9e | 1152 | if ((!retval) && |
97cd49eb SM |
1153 | (priv->chip_type == FT232BM || |
1154 | priv->chip_type == FT2232C || | |
1155 | priv->chip_type == FT232RL)) { | |
12bdbe03 | 1156 | retval = device_create_file(&port->dev, |
13f4db9e | 1157 | &dev_attr_latency_timer); |
1da177e4 LT |
1158 | } |
1159 | } | |
13f4db9e | 1160 | return retval; |
1da177e4 LT |
1161 | } |
1162 | ||
12bdbe03 | 1163 | static void remove_sysfs_attrs(struct usb_serial_port *port) |
1da177e4 | 1164 | { |
12bdbe03 | 1165 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
1da177e4 | 1166 | |
5c09d144 | 1167 | dbg("%s",__FUNCTION__); |
1da177e4 | 1168 | |
1da177e4 LT |
1169 | /* XXX see create_sysfs_attrs */ |
1170 | if (priv->chip_type != SIO) { | |
12bdbe03 | 1171 | device_remove_file(&port->dev, &dev_attr_event_char); |
ed6e5282 AB |
1172 | if (priv->chip_type == FT232BM || |
1173 | priv->chip_type == FT2232C || | |
1174 | priv->chip_type == FT232RL) { | |
12bdbe03 | 1175 | device_remove_file(&port->dev, &dev_attr_latency_timer); |
1da177e4 LT |
1176 | } |
1177 | } | |
5c09d144 | 1178 | |
1da177e4 LT |
1179 | } |
1180 | ||
1181 | /* | |
1182 | * *************************************************************************** | |
1183 | * FTDI driver specific functions | |
1184 | * *************************************************************************** | |
1185 | */ | |
1186 | ||
8f977e42 IA |
1187 | /* Probe function to check for special devices */ |
1188 | static int ftdi_sio_probe (struct usb_serial *serial, const struct usb_device_id *id) | |
1189 | { | |
fa91d43b TL |
1190 | struct ftdi_sio_quirk *quirk = (struct ftdi_sio_quirk *)id->driver_info; |
1191 | ||
1192 | if (quirk && quirk->probe) { | |
1193 | int ret = quirk->probe(serial); | |
1194 | if (ret != 0) | |
1195 | return ret; | |
1196 | } | |
1197 | ||
8f977e42 IA |
1198 | usb_set_serial_data(serial, (void *)id->driver_info); |
1199 | ||
fa91d43b | 1200 | return 0; |
8f977e42 IA |
1201 | } |
1202 | ||
12bdbe03 | 1203 | static int ftdi_sio_port_probe(struct usb_serial_port *port) |
1da177e4 | 1204 | { |
1da177e4 | 1205 | struct ftdi_private *priv; |
0ffbbe25 ON |
1206 | struct ftdi_sio_quirk *quirk = usb_get_serial_data(port->serial); |
1207 | ||
13f4db9e | 1208 | |
1da177e4 LT |
1209 | dbg("%s",__FUNCTION__); |
1210 | ||
80b6ca48 | 1211 | priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL); |
1da177e4 LT |
1212 | if (!priv){ |
1213 | err("%s- kmalloc(%Zd) failed.", __FUNCTION__, sizeof(struct ftdi_private)); | |
1214 | return -ENOMEM; | |
1215 | } | |
1da177e4 LT |
1216 | |
1217 | spin_lock_init(&priv->rx_lock); | |
22465400 | 1218 | spin_lock_init(&priv->tx_lock); |
1da177e4 LT |
1219 | init_waitqueue_head(&priv->delta_msr_wait); |
1220 | /* This will push the characters through immediately rather | |
1221 | than queue a task to deliver them */ | |
1222 | priv->flags = ASYNC_LOW_LATENCY; | |
1223 | ||
0ffbbe25 ON |
1224 | if (quirk && quirk->port_probe) |
1225 | quirk->port_probe(priv); | |
1226 | ||
1da177e4 | 1227 | /* Increase the size of read buffers */ |
1bc3c9e1 | 1228 | kfree(port->bulk_in_buffer); |
1da177e4 LT |
1229 | port->bulk_in_buffer = kmalloc (BUFSZ, GFP_KERNEL); |
1230 | if (!port->bulk_in_buffer) { | |
1231 | kfree (priv); | |
1232 | return -ENOMEM; | |
1233 | } | |
1234 | if (port->read_urb) { | |
1235 | port->read_urb->transfer_buffer = port->bulk_in_buffer; | |
1236 | port->read_urb->transfer_buffer_length = BUFSZ; | |
1237 | } | |
1238 | ||
c4028958 DH |
1239 | INIT_DELAYED_WORK(&priv->rx_work, ftdi_process_read); |
1240 | priv->port = port; | |
76854cea | 1241 | |
1da177e4 LT |
1242 | /* Free port's existing write urb and transfer buffer. */ |
1243 | if (port->write_urb) { | |
1244 | usb_free_urb (port->write_urb); | |
1245 | port->write_urb = NULL; | |
1246 | } | |
1bc3c9e1 JJ |
1247 | kfree(port->bulk_out_buffer); |
1248 | port->bulk_out_buffer = NULL; | |
1da177e4 | 1249 | |
12bdbe03 | 1250 | usb_set_serial_port_data(port, priv); |
1da177e4 | 1251 | |
12bdbe03 JR |
1252 | ftdi_determine_type (port); |
1253 | create_sysfs_attrs(port); | |
1254 | return 0; | |
1255 | } | |
1da177e4 | 1256 | |
8f977e42 IA |
1257 | /* Setup for the USB-UIRT device, which requires hardwired |
1258 | * baudrate (38400 gets mapped to 312500) */ | |
1da177e4 | 1259 | /* Called from usbserial:serial_probe */ |
0ffbbe25 | 1260 | static void ftdi_USB_UIRT_setup (struct ftdi_private *priv) |
8f977e42 | 1261 | { |
1da177e4 | 1262 | dbg("%s",__FUNCTION__); |
1da177e4 | 1263 | |
1da177e4 LT |
1264 | priv->flags |= ASYNC_SPD_CUST; |
1265 | priv->custom_divisor = 77; | |
1266 | priv->force_baud = B38400; | |
8f977e42 | 1267 | } /* ftdi_USB_UIRT_setup */ |
1da177e4 | 1268 | |
8f977e42 IA |
1269 | /* Setup for the HE-TIRA1 device, which requires hardwired |
1270 | * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */ | |
0ffbbe25 | 1271 | static void ftdi_HE_TIRA1_setup (struct ftdi_private *priv) |
8f977e42 | 1272 | { |
1da177e4 | 1273 | dbg("%s",__FUNCTION__); |
1da177e4 | 1274 | |
1da177e4 LT |
1275 | priv->flags |= ASYNC_SPD_CUST; |
1276 | priv->custom_divisor = 240; | |
1277 | priv->force_baud = B38400; | |
1278 | priv->force_rtscts = 1; | |
8f977e42 | 1279 | } /* ftdi_HE_TIRA1_setup */ |
1da177e4 | 1280 | |
fa91d43b TL |
1281 | /* |
1282 | * First port on Olimex arm-usb-ocd is reserved for JTAG interface | |
1283 | * and can be accessed from userspace using openocd. | |
1284 | */ | |
1285 | static int ftdi_olimex_probe(struct usb_serial *serial) | |
1286 | { | |
1287 | struct usb_device *udev = serial->dev; | |
1288 | struct usb_interface *interface = serial->interface; | |
1289 | ||
1290 | dbg("%s",__FUNCTION__); | |
1291 | ||
1292 | if (interface == udev->actconfig->interface[0]) { | |
1293 | info("Ignoring reserved serial port on Olimex arm-usb-ocd\n"); | |
1294 | return -ENODEV; | |
1295 | } | |
1296 | ||
1297 | return 0; | |
1298 | } | |
1da177e4 | 1299 | |
5c09d144 | 1300 | /* ftdi_shutdown is called from usbserial:usb_serial_disconnect |
1da177e4 LT |
1301 | * it is called when the usb device is disconnected |
1302 | * | |
1303 | * usbserial:usb_serial_disconnect | |
1304 | * calls __serial_close for each open of the port | |
1305 | * shutdown is called then (ie ftdi_shutdown) | |
1306 | */ | |
1da177e4 | 1307 | static void ftdi_shutdown (struct usb_serial *serial) |
12bdbe03 JR |
1308 | { |
1309 | dbg("%s", __FUNCTION__); | |
1310 | } | |
5c09d144 | 1311 | |
12bdbe03 JR |
1312 | static int ftdi_sio_port_remove(struct usb_serial_port *port) |
1313 | { | |
1da177e4 LT |
1314 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
1315 | ||
1316 | dbg("%s", __FUNCTION__); | |
1317 | ||
12bdbe03 | 1318 | remove_sysfs_attrs(port); |
5c09d144 DB |
1319 | |
1320 | /* all open ports are closed at this point | |
1321 | * (by usbserial.c:__serial_close, which calls ftdi_close) | |
1da177e4 LT |
1322 | */ |
1323 | ||
1324 | if (priv) { | |
1325 | usb_set_serial_port_data(port, NULL); | |
1326 | kfree(priv); | |
1327 | } | |
1da177e4 | 1328 | |
12bdbe03 JR |
1329 | return 0; |
1330 | } | |
1da177e4 LT |
1331 | |
1332 | static int ftdi_open (struct usb_serial_port *port, struct file *filp) | |
1333 | { /* ftdi_open */ | |
1da177e4 LT |
1334 | struct usb_device *dev = port->serial->dev; |
1335 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
1336 | unsigned long flags; | |
5c09d144 | 1337 | |
1da177e4 LT |
1338 | int result = 0; |
1339 | char buf[1]; /* Needed for the usb_control_msg I think */ | |
1340 | ||
1341 | dbg("%s", __FUNCTION__); | |
1342 | ||
22465400 IA |
1343 | spin_lock_irqsave(&priv->tx_lock, flags); |
1344 | priv->tx_bytes = 0; | |
1345 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1346 | spin_lock_irqsave(&priv->rx_lock, flags); | |
1347 | priv->rx_bytes = 0; | |
1348 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
1349 | ||
57845bd1 GL |
1350 | if (port->tty) |
1351 | port->tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0; | |
1da177e4 LT |
1352 | |
1353 | /* No error checking for this (will get errors later anyway) */ | |
1354 | /* See ftdi_sio.h for description of what is reset */ | |
1355 | usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
5c09d144 DB |
1356 | FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE, |
1357 | FTDI_SIO_RESET_SIO, | |
1da177e4 LT |
1358 | priv->interface, buf, 0, WDR_TIMEOUT); |
1359 | ||
1360 | /* Termios defaults are set by usb_serial_init. We don't change | |
1361 | port->tty->termios - this would loose speed settings, etc. | |
1362 | This is same behaviour as serial.c/rs_open() - Kuba */ | |
1363 | ||
1364 | /* ftdi_set_termios will send usb control messages */ | |
57845bd1 GL |
1365 | if (port->tty) |
1366 | ftdi_set_termios(port, NULL); | |
1da177e4 LT |
1367 | |
1368 | /* FIXME: Flow control might be enabled, so it should be checked - | |
1369 | we have no control of defaults! */ | |
1370 | /* Turn on RTS and DTR since we are not flow controlling by default */ | |
74ede0ff | 1371 | set_mctrl(port, TIOCM_DTR | TIOCM_RTS); |
1da177e4 LT |
1372 | |
1373 | /* Not throttled */ | |
1374 | spin_lock_irqsave(&priv->rx_lock, flags); | |
1375 | priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED); | |
1376 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
1377 | ||
1378 | /* Start reading from the device */ | |
76854cea | 1379 | priv->rx_processed = 0; |
1da177e4 LT |
1380 | usb_fill_bulk_urb(port->read_urb, dev, |
1381 | usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress), | |
1382 | port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length, | |
1383 | ftdi_read_bulk_callback, port); | |
1384 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
1385 | if (result) | |
1386 | err("%s - failed submitting read urb, error %d", __FUNCTION__, result); | |
1387 | ||
1388 | ||
1389 | return result; | |
1390 | } /* ftdi_open */ | |
1391 | ||
1392 | ||
1393 | ||
5c09d144 | 1394 | /* |
1da177e4 LT |
1395 | * usbserial:__serial_close only calls ftdi_close if the point is open |
1396 | * | |
1397 | * This only gets called when it is the last close | |
5c09d144 DB |
1398 | * |
1399 | * | |
1da177e4 LT |
1400 | */ |
1401 | ||
1402 | static void ftdi_close (struct usb_serial_port *port, struct file *filp) | |
1403 | { /* ftdi_close */ | |
1404 | unsigned int c_cflag = port->tty->termios->c_cflag; | |
1405 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
1406 | char buf[1]; | |
1407 | ||
1408 | dbg("%s", __FUNCTION__); | |
1409 | ||
1410 | if (c_cflag & HUPCL){ | |
1411 | /* Disable flow control */ | |
5c09d144 | 1412 | if (usb_control_msg(port->serial->dev, |
1da177e4 LT |
1413 | usb_sndctrlpipe(port->serial->dev, 0), |
1414 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, | |
1415 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, | |
1416 | 0, priv->interface, buf, 0, | |
1417 | WDR_TIMEOUT) < 0) { | |
1418 | err("error from flowcontrol urb"); | |
5c09d144 | 1419 | } |
1da177e4 | 1420 | |
74ede0ff IA |
1421 | /* drop RTS and DTR */ |
1422 | clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); | |
1da177e4 | 1423 | } /* Note change no line if hupcl is off */ |
76854cea IA |
1424 | |
1425 | /* cancel any scheduled reading */ | |
1426 | cancel_delayed_work(&priv->rx_work); | |
1427 | flush_scheduled_work(); | |
5c09d144 | 1428 | |
1da177e4 | 1429 | /* shutdown our bulk read */ |
794c944e | 1430 | usb_kill_urb(port->read_urb); |
1da177e4 LT |
1431 | } /* ftdi_close */ |
1432 | ||
1433 | ||
5c09d144 | 1434 | |
1da177e4 LT |
1435 | /* The SIO requires the first byte to have: |
1436 | * B0 1 | |
1437 | * B1 0 | |
1438 | * B2..7 length of message excluding byte 0 | |
1439 | * | |
1440 | * The new devices do not require this byte | |
1441 | */ | |
1442 | static int ftdi_write (struct usb_serial_port *port, | |
1443 | const unsigned char *buf, int count) | |
1444 | { /* ftdi_write */ | |
1445 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
1446 | struct urb *urb; | |
1447 | unsigned char *buffer; | |
1448 | int data_offset ; /* will be 1 for the SIO and 0 otherwise */ | |
1449 | int status; | |
1450 | int transfer_size; | |
22465400 | 1451 | unsigned long flags; |
1da177e4 LT |
1452 | |
1453 | dbg("%s port %d, %d bytes", __FUNCTION__, port->number, count); | |
1454 | ||
1455 | if (count == 0) { | |
1456 | dbg("write request of 0 bytes"); | |
1457 | return 0; | |
1458 | } | |
22465400 IA |
1459 | spin_lock_irqsave(&priv->tx_lock, flags); |
1460 | if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) { | |
1461 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1462 | dbg("%s - write limit hit\n", __FUNCTION__); | |
1463 | return 0; | |
1464 | } | |
62127a58 | 1465 | priv->tx_outstanding_urbs++; |
22465400 | 1466 | spin_unlock_irqrestore(&priv->tx_lock, flags); |
5c09d144 | 1467 | |
1da177e4 LT |
1468 | data_offset = priv->write_offset; |
1469 | dbg("data_offset set to %d",data_offset); | |
1470 | ||
1471 | /* Determine total transfer size */ | |
1472 | transfer_size = count; | |
1473 | if (data_offset > 0) { | |
1474 | /* Original sio needs control bytes too... */ | |
1475 | transfer_size += (data_offset * | |
1476 | ((count + (PKTSZ - 1 - data_offset)) / | |
1477 | (PKTSZ - data_offset))); | |
1478 | } | |
1479 | ||
1480 | buffer = kmalloc (transfer_size, GFP_ATOMIC); | |
1481 | if (!buffer) { | |
1482 | err("%s ran out of kernel memory for urb ...", __FUNCTION__); | |
62127a58 ON |
1483 | count = -ENOMEM; |
1484 | goto error_no_buffer; | |
1da177e4 LT |
1485 | } |
1486 | ||
1487 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
1488 | if (!urb) { | |
1489 | err("%s - no more free urbs", __FUNCTION__); | |
62127a58 ON |
1490 | count = -ENOMEM; |
1491 | goto error_no_urb; | |
1da177e4 LT |
1492 | } |
1493 | ||
1494 | /* Copy data */ | |
1495 | if (data_offset > 0) { | |
1496 | /* Original sio requires control byte at start of each packet. */ | |
1497 | int user_pktsz = PKTSZ - data_offset; | |
1498 | int todo = count; | |
1499 | unsigned char *first_byte = buffer; | |
1500 | const unsigned char *current_position = buf; | |
1501 | ||
1502 | while (todo > 0) { | |
1503 | if (user_pktsz > todo) { | |
1504 | user_pktsz = todo; | |
1505 | } | |
1506 | /* Write the control byte at the front of the packet*/ | |
5c09d144 | 1507 | *first_byte = 1 | ((user_pktsz) << 2); |
1da177e4 LT |
1508 | /* Copy data for packet */ |
1509 | memcpy (first_byte + data_offset, | |
1510 | current_position, user_pktsz); | |
1511 | first_byte += user_pktsz + data_offset; | |
1512 | current_position += user_pktsz; | |
1513 | todo -= user_pktsz; | |
1514 | } | |
1515 | } else { | |
1516 | /* No control byte required. */ | |
1517 | /* Copy in the data to send */ | |
1518 | memcpy (buffer, buf, count); | |
1519 | } | |
1520 | ||
1521 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, transfer_size, buffer); | |
1522 | ||
1523 | /* fill the buffer and send it */ | |
5c09d144 | 1524 | usb_fill_bulk_urb(urb, port->serial->dev, |
1da177e4 LT |
1525 | usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), |
1526 | buffer, transfer_size, | |
1527 | ftdi_write_bulk_callback, port); | |
1528 | ||
1529 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1530 | if (status) { | |
1531 | err("%s - failed submitting write urb, error %d", __FUNCTION__, status); | |
1532 | count = status; | |
62127a58 | 1533 | goto error; |
22465400 IA |
1534 | } else { |
1535 | spin_lock_irqsave(&priv->tx_lock, flags); | |
22465400 IA |
1536 | priv->tx_outstanding_bytes += count; |
1537 | priv->tx_bytes += count; | |
1538 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1da177e4 LT |
1539 | } |
1540 | ||
1541 | /* we are done with this urb, so let the host driver | |
1542 | * really free it when it is finished with it */ | |
62127a58 | 1543 | usb_free_urb(urb); |
1da177e4 LT |
1544 | |
1545 | dbg("%s write returning: %d", __FUNCTION__, count); | |
1546 | return count; | |
62127a58 ON |
1547 | error: |
1548 | usb_free_urb(urb); | |
1549 | error_no_urb: | |
1550 | kfree (buffer); | |
1551 | error_no_buffer: | |
1552 | spin_lock_irqsave(&priv->tx_lock, flags); | |
1553 | priv->tx_outstanding_urbs--; | |
1554 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1555 | return count; | |
1da177e4 LT |
1556 | } /* ftdi_write */ |
1557 | ||
1558 | ||
1559 | /* This function may get called when the device is closed */ | |
1560 | ||
7d12e780 | 1561 | static void ftdi_write_bulk_callback (struct urb *urb) |
1da177e4 | 1562 | { |
22465400 | 1563 | unsigned long flags; |
1da177e4 | 1564 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; |
22465400 IA |
1565 | struct ftdi_private *priv; |
1566 | int data_offset; /* will be 1 for the SIO and 0 otherwise */ | |
1567 | unsigned long countback; | |
0fb0aa18 | 1568 | int status = urb->status; |
1da177e4 LT |
1569 | |
1570 | /* free up the transfer buffer, as usb_free_urb() does not do this */ | |
1571 | kfree (urb->transfer_buffer); | |
1572 | ||
1573 | dbg("%s - port %d", __FUNCTION__, port->number); | |
5c09d144 | 1574 | |
0fb0aa18 GKH |
1575 | if (status) { |
1576 | dbg("nonzero write bulk status received: %d", status); | |
1da177e4 LT |
1577 | return; |
1578 | } | |
1579 | ||
22465400 IA |
1580 | priv = usb_get_serial_port_data(port); |
1581 | if (!priv) { | |
1582 | dbg("%s - bad port private data pointer - exiting", __FUNCTION__); | |
1583 | return; | |
1584 | } | |
1585 | /* account for transferred data */ | |
1586 | countback = urb->actual_length; | |
1587 | data_offset = priv->write_offset; | |
1588 | if (data_offset > 0) { | |
1589 | /* Subtract the control bytes */ | |
1590 | countback -= (data_offset * ((countback + (PKTSZ - 1)) / PKTSZ)); | |
1591 | } | |
1592 | spin_lock_irqsave(&priv->tx_lock, flags); | |
1593 | --priv->tx_outstanding_urbs; | |
1594 | priv->tx_outstanding_bytes -= countback; | |
1595 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1596 | ||
cf2c7481 | 1597 | usb_serial_port_softint(port); |
1da177e4 LT |
1598 | } /* ftdi_write_bulk_callback */ |
1599 | ||
1600 | ||
1601 | static int ftdi_write_room( struct usb_serial_port *port ) | |
1602 | { | |
22465400 IA |
1603 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
1604 | int room; | |
1605 | unsigned long flags; | |
1606 | ||
1da177e4 LT |
1607 | dbg("%s - port %d", __FUNCTION__, port->number); |
1608 | ||
22465400 IA |
1609 | spin_lock_irqsave(&priv->tx_lock, flags); |
1610 | if (priv->tx_outstanding_urbs < URB_UPPER_LIMIT) { | |
1611 | /* | |
1612 | * We really can take anything the user throws at us | |
1613 | * but let's pick a nice big number to tell the tty | |
1614 | * layer that we have lots of free space | |
1615 | */ | |
1616 | room = 2048; | |
1617 | } else { | |
1618 | room = 0; | |
1619 | } | |
1620 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1621 | return room; | |
1da177e4 LT |
1622 | } /* ftdi_write_room */ |
1623 | ||
1624 | ||
1625 | static int ftdi_chars_in_buffer (struct usb_serial_port *port) | |
1626 | { /* ftdi_chars_in_buffer */ | |
22465400 IA |
1627 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
1628 | int buffered; | |
1629 | unsigned long flags; | |
1630 | ||
1da177e4 LT |
1631 | dbg("%s - port %d", __FUNCTION__, port->number); |
1632 | ||
22465400 IA |
1633 | spin_lock_irqsave(&priv->tx_lock, flags); |
1634 | buffered = (int)priv->tx_outstanding_bytes; | |
1635 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1636 | if (buffered < 0) { | |
1637 | err("%s outstanding tx bytes is negative!", __FUNCTION__); | |
1638 | buffered = 0; | |
1639 | } | |
1640 | return buffered; | |
1da177e4 LT |
1641 | } /* ftdi_chars_in_buffer */ |
1642 | ||
1643 | ||
1644 | ||
7d12e780 | 1645 | static void ftdi_read_bulk_callback (struct urb *urb) |
1da177e4 LT |
1646 | { /* ftdi_read_bulk_callback */ |
1647 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; | |
1648 | struct tty_struct *tty; | |
1649 | struct ftdi_private *priv; | |
22465400 IA |
1650 | unsigned long countread; |
1651 | unsigned long flags; | |
0fb0aa18 | 1652 | int status = urb->status; |
1da177e4 LT |
1653 | |
1654 | if (urb->number_of_packets > 0) { | |
1655 | err("%s transfer_buffer_length %d actual_length %d number of packets %d",__FUNCTION__, | |
1656 | urb->transfer_buffer_length, urb->actual_length, urb->number_of_packets ); | |
1657 | err("%s transfer_flags %x ", __FUNCTION__,urb->transfer_flags ); | |
1658 | } | |
1659 | ||
1660 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1661 | ||
1662 | if (port->open_count <= 0) | |
1663 | return; | |
1664 | ||
1665 | tty = port->tty; | |
1666 | if (!tty) { | |
1667 | dbg("%s - bad tty pointer - exiting",__FUNCTION__); | |
1668 | return; | |
1669 | } | |
1670 | ||
1671 | priv = usb_get_serial_port_data(port); | |
1672 | if (!priv) { | |
1673 | dbg("%s - bad port private data pointer - exiting", __FUNCTION__); | |
1674 | return; | |
1675 | } | |
1676 | ||
1677 | if (urb != port->read_urb) { | |
1678 | err("%s - Not my urb!", __FUNCTION__); | |
1679 | } | |
1680 | ||
0fb0aa18 | 1681 | if (status) { |
1da177e4 | 1682 | /* This will happen at close every time so it is a dbg not an err */ |
0fb0aa18 GKH |
1683 | dbg("(this is ok on close) nonzero read bulk status received: " |
1684 | "%d", status); | |
1da177e4 LT |
1685 | return; |
1686 | } | |
1687 | ||
22465400 IA |
1688 | /* count data bytes, but not status bytes */ |
1689 | countread = urb->actual_length; | |
1690 | countread -= 2 * ((countread + (PKTSZ - 1)) / PKTSZ); | |
1691 | spin_lock_irqsave(&priv->rx_lock, flags); | |
1692 | priv->rx_bytes += countread; | |
1693 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
1694 | ||
c4028958 | 1695 | ftdi_process_read(&priv->rx_work.work); |
1da177e4 LT |
1696 | |
1697 | } /* ftdi_read_bulk_callback */ | |
1698 | ||
1699 | ||
c4028958 | 1700 | static void ftdi_process_read (struct work_struct *work) |
1da177e4 | 1701 | { /* ftdi_process_read */ |
c4028958 DH |
1702 | struct ftdi_private *priv = |
1703 | container_of(work, struct ftdi_private, rx_work.work); | |
1704 | struct usb_serial_port *port = priv->port; | |
1da177e4 LT |
1705 | struct urb *urb; |
1706 | struct tty_struct *tty; | |
1da177e4 | 1707 | char error_flag; |
5c09d144 | 1708 | unsigned char *data; |
1da177e4 LT |
1709 | |
1710 | int i; | |
1711 | int result; | |
1712 | int need_flip; | |
1713 | int packet_offset; | |
76854cea | 1714 | unsigned long flags; |
1da177e4 LT |
1715 | |
1716 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1717 | ||
1718 | if (port->open_count <= 0) | |
1719 | return; | |
1720 | ||
1721 | tty = port->tty; | |
1722 | if (!tty) { | |
1723 | dbg("%s - bad tty pointer - exiting",__FUNCTION__); | |
1724 | return; | |
1725 | } | |
1726 | ||
1727 | priv = usb_get_serial_port_data(port); | |
1728 | if (!priv) { | |
1729 | dbg("%s - bad port private data pointer - exiting", __FUNCTION__); | |
1730 | return; | |
1731 | } | |
1732 | ||
1733 | urb = port->read_urb; | |
1734 | if (!urb) { | |
1735 | dbg("%s - bad read_urb pointer - exiting", __FUNCTION__); | |
1736 | return; | |
1737 | } | |
1738 | ||
1739 | data = urb->transfer_buffer; | |
1740 | ||
76854cea IA |
1741 | if (priv->rx_processed) { |
1742 | dbg("%s - already processed: %d bytes, %d remain", __FUNCTION__, | |
1743 | priv->rx_processed, | |
1744 | urb->actual_length - priv->rx_processed); | |
1da177e4 | 1745 | } else { |
76854cea IA |
1746 | /* The first two bytes of every read packet are status */ |
1747 | if (urb->actual_length > 2) { | |
1748 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data); | |
1749 | } else { | |
1750 | dbg("Status only: %03oo %03oo",data[0],data[1]); | |
1751 | } | |
1752 | } | |
1da177e4 LT |
1753 | |
1754 | ||
1755 | /* TO DO -- check for hung up line and handle appropriately: */ | |
1756 | /* send hangup */ | |
1757 | /* See acm.c - you do a tty_hangup - eg tty_hangup(tty) */ | |
1758 | /* if CD is dropped and the line is not CLOCAL then we should hangup */ | |
1759 | ||
1760 | need_flip = 0; | |
76854cea IA |
1761 | for (packet_offset = priv->rx_processed; packet_offset < urb->actual_length; packet_offset += PKTSZ) { |
1762 | int length; | |
1763 | ||
1da177e4 | 1764 | /* Compare new line status to the old one, signal if different */ |
76854cea IA |
1765 | /* N.B. packet may be processed more than once, but differences |
1766 | * are only processed once. */ | |
1da177e4 LT |
1767 | if (priv != NULL) { |
1768 | char new_status = data[packet_offset+0] & FTDI_STATUS_B0_MASK; | |
1769 | if (new_status != priv->prev_status) { | |
1770 | priv->diff_status |= new_status ^ priv->prev_status; | |
1771 | wake_up_interruptible(&priv->delta_msr_wait); | |
1772 | priv->prev_status = new_status; | |
1773 | } | |
1774 | } | |
1775 | ||
76854cea IA |
1776 | length = min(PKTSZ, urb->actual_length-packet_offset)-2; |
1777 | if (length < 0) { | |
1778 | err("%s - bad packet length: %d", __FUNCTION__, length+2); | |
1779 | length = 0; | |
1780 | } | |
1781 | ||
76854cea IA |
1782 | if (priv->rx_flags & THROTTLED) { |
1783 | dbg("%s - throttled", __FUNCTION__); | |
1784 | break; | |
1785 | } | |
33f0f88f | 1786 | if (tty_buffer_request_room(tty, length) < length) { |
76854cea IA |
1787 | /* break out & wait for throttling/unthrottling to happen */ |
1788 | dbg("%s - receive room low", __FUNCTION__); | |
1789 | break; | |
1790 | } | |
1791 | ||
1da177e4 LT |
1792 | /* Handle errors and break */ |
1793 | error_flag = TTY_NORMAL; | |
1794 | /* Although the device uses a bitmask and hence can have multiple */ | |
1795 | /* errors on a packet - the order here sets the priority the */ | |
1796 | /* error is returned to the tty layer */ | |
1797 | ||
1798 | if ( data[packet_offset+1] & FTDI_RS_OE ) { | |
1799 | error_flag = TTY_OVERRUN; | |
1800 | dbg("OVERRRUN error"); | |
1801 | } | |
1802 | if ( data[packet_offset+1] & FTDI_RS_BI ) { | |
1803 | error_flag = TTY_BREAK; | |
1804 | dbg("BREAK received"); | |
1805 | } | |
1806 | if ( data[packet_offset+1] & FTDI_RS_PE ) { | |
1807 | error_flag = TTY_PARITY; | |
1808 | dbg("PARITY error"); | |
1809 | } | |
1810 | if ( data[packet_offset+1] & FTDI_RS_FE ) { | |
1811 | error_flag = TTY_FRAME; | |
1812 | dbg("FRAMING error"); | |
1813 | } | |
76854cea IA |
1814 | if (length > 0) { |
1815 | for (i = 2; i < length+2; i++) { | |
5c09d144 | 1816 | /* Note that the error flag is duplicated for |
1da177e4 LT |
1817 | every character received since we don't know |
1818 | which character it applied to */ | |
1819 | tty_insert_flip_char(tty, data[packet_offset+i], error_flag); | |
1820 | } | |
1821 | need_flip = 1; | |
1822 | } | |
1823 | ||
1824 | #ifdef NOT_CORRECT_BUT_KEEPING_IT_FOR_NOW | |
1825 | /* if a parity error is detected you get status packets forever | |
1826 | until a character is sent without a parity error. | |
1827 | This doesn't work well since the application receives a never | |
1828 | ending stream of bad data - even though new data hasn't been sent. | |
1829 | Therefore I (bill) have taken this out. | |
5c09d144 | 1830 | However - this might make sense for framing errors and so on |
1da177e4 LT |
1831 | so I am leaving the code in for now. |
1832 | */ | |
1833 | else { | |
1834 | if (error_flag != TTY_NORMAL){ | |
1835 | dbg("error_flag is not normal"); | |
1836 | /* In this case it is just status - if that is an error send a bad character */ | |
1837 | if(tty->flip.count >= TTY_FLIPBUF_SIZE) { | |
1838 | tty_flip_buffer_push(tty); | |
1839 | } | |
1840 | tty_insert_flip_char(tty, 0xff, error_flag); | |
1841 | need_flip = 1; | |
1842 | } | |
1843 | } | |
1844 | #endif | |
1845 | } /* "for(packet_offset=0..." */ | |
1846 | ||
1847 | /* Low latency */ | |
1848 | if (need_flip) { | |
1849 | tty_flip_buffer_push(tty); | |
1850 | } | |
1851 | ||
76854cea IA |
1852 | if (packet_offset < urb->actual_length) { |
1853 | /* not completely processed - record progress */ | |
1854 | priv->rx_processed = packet_offset; | |
1855 | dbg("%s - incomplete, %d bytes processed, %d remain", | |
1856 | __FUNCTION__, packet_offset, | |
1857 | urb->actual_length - packet_offset); | |
1858 | /* check if we were throttled while processing */ | |
1859 | spin_lock_irqsave(&priv->rx_lock, flags); | |
1860 | if (priv->rx_flags & THROTTLED) { | |
1861 | priv->rx_flags |= ACTUALLY_THROTTLED; | |
1862 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
1863 | dbg("%s - deferring remainder until unthrottled", | |
1864 | __FUNCTION__); | |
1865 | return; | |
1866 | } | |
1867 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
1868 | /* if the port is closed stop trying to read */ | |
1869 | if (port->open_count > 0){ | |
1870 | /* delay processing of remainder */ | |
1871 | schedule_delayed_work(&priv->rx_work, 1); | |
1872 | } else { | |
1873 | dbg("%s - port is closed", __FUNCTION__); | |
1874 | } | |
1875 | return; | |
1876 | } | |
1877 | ||
1878 | /* urb is completely processed */ | |
1879 | priv->rx_processed = 0; | |
1880 | ||
1da177e4 LT |
1881 | /* if the port is closed stop trying to read */ |
1882 | if (port->open_count > 0){ | |
1883 | /* Continue trying to always read */ | |
5c09d144 | 1884 | usb_fill_bulk_urb(port->read_urb, port->serial->dev, |
1da177e4 LT |
1885 | usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress), |
1886 | port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length, | |
1887 | ftdi_read_bulk_callback, port); | |
1888 | ||
1889 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
1890 | if (result) | |
1891 | err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); | |
1892 | } | |
1893 | ||
1894 | return; | |
1895 | } /* ftdi_process_read */ | |
1896 | ||
1897 | ||
1898 | static void ftdi_break_ctl( struct usb_serial_port *port, int break_state ) | |
1899 | { | |
1900 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
5c09d144 | 1901 | __u16 urb_value = 0; |
1da177e4 | 1902 | char buf[1]; |
5c09d144 | 1903 | |
1da177e4 LT |
1904 | /* break_state = -1 to turn on break, and 0 to turn off break */ |
1905 | /* see drivers/char/tty_io.c to see it used */ | |
1906 | /* last_set_data_urb_value NEVER has the break bit set in it */ | |
1907 | ||
1908 | if (break_state) { | |
1909 | urb_value = priv->last_set_data_urb_value | FTDI_SIO_SET_BREAK; | |
1910 | } else { | |
5c09d144 | 1911 | urb_value = priv->last_set_data_urb_value; |
1da177e4 LT |
1912 | } |
1913 | ||
5c09d144 | 1914 | |
1da177e4 | 1915 | if (usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0), |
5c09d144 | 1916 | FTDI_SIO_SET_DATA_REQUEST, |
1da177e4 LT |
1917 | FTDI_SIO_SET_DATA_REQUEST_TYPE, |
1918 | urb_value , priv->interface, | |
1919 | buf, 0, WDR_TIMEOUT) < 0) { | |
1920 | err("%s FAILED to enable/disable break state (state was %d)", __FUNCTION__,break_state); | |
5c09d144 | 1921 | } |
1da177e4 LT |
1922 | |
1923 | dbg("%s break state is %d - urb is %d", __FUNCTION__,break_state, urb_value); | |
5c09d144 | 1924 | |
1da177e4 LT |
1925 | } |
1926 | ||
1927 | ||
1928 | /* old_termios contains the original termios settings and tty->termios contains | |
1929 | * the new setting to be used | |
1930 | * WARNING: set_termios calls this with old_termios in kernel space | |
1931 | */ | |
1932 | ||
606d099c | 1933 | static void ftdi_set_termios (struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 LT |
1934 | { /* ftdi_termios */ |
1935 | struct usb_device *dev = port->serial->dev; | |
1936 | unsigned int cflag = port->tty->termios->c_cflag; | |
1937 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
1938 | __u16 urb_value; /* will hold the new flags */ | |
1939 | char buf[1]; /* Perhaps I should dynamically alloc this? */ | |
5c09d144 | 1940 | |
1da177e4 LT |
1941 | // Added for xon/xoff support |
1942 | unsigned int iflag = port->tty->termios->c_iflag; | |
1943 | unsigned char vstop; | |
1944 | unsigned char vstart; | |
5c09d144 | 1945 | |
1da177e4 LT |
1946 | dbg("%s", __FUNCTION__); |
1947 | ||
1948 | /* Force baud rate if this device requires it, unless it is set to B0. */ | |
1949 | if (priv->force_baud && ((port->tty->termios->c_cflag & CBAUD) != B0)) { | |
1950 | dbg("%s: forcing baud rate for this device", __FUNCTION__); | |
1951 | port->tty->termios->c_cflag &= ~CBAUD; | |
1952 | port->tty->termios->c_cflag |= priv->force_baud; | |
1953 | } | |
1954 | ||
1955 | /* Force RTS-CTS if this device requires it. */ | |
1956 | if (priv->force_rtscts) { | |
1957 | dbg("%s: forcing rtscts for this device", __FUNCTION__); | |
1958 | port->tty->termios->c_cflag |= CRTSCTS; | |
1959 | } | |
1960 | ||
1961 | cflag = port->tty->termios->c_cflag; | |
1962 | ||
5c09d144 DB |
1963 | /* FIXME -For this cut I don't care if the line is really changing or |
1964 | not - so just do the change regardless - should be able to | |
1da177e4 | 1965 | compare old_termios and tty->termios */ |
5c09d144 DB |
1966 | /* NOTE These routines can get interrupted by |
1967 | ftdi_sio_read_bulk_callback - need to examine what this | |
1da177e4 | 1968 | means - don't see any problems yet */ |
5c09d144 | 1969 | |
1da177e4 | 1970 | /* Set number of data bits, parity, stop bits */ |
5c09d144 | 1971 | |
1da177e4 LT |
1972 | urb_value = 0; |
1973 | urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 : | |
1974 | FTDI_SIO_SET_DATA_STOP_BITS_1); | |
5c09d144 DB |
1975 | urb_value |= (cflag & PARENB ? |
1976 | (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD : | |
1da177e4 LT |
1977 | FTDI_SIO_SET_DATA_PARITY_EVEN) : |
1978 | FTDI_SIO_SET_DATA_PARITY_NONE); | |
1979 | if (cflag & CSIZE) { | |
1980 | switch (cflag & CSIZE) { | |
1981 | case CS5: urb_value |= 5; dbg("Setting CS5"); break; | |
1982 | case CS6: urb_value |= 6; dbg("Setting CS6"); break; | |
1983 | case CS7: urb_value |= 7; dbg("Setting CS7"); break; | |
1984 | case CS8: urb_value |= 8; dbg("Setting CS8"); break; | |
1985 | default: | |
1986 | err("CSIZE was set but not CS5-CS8"); | |
1987 | } | |
1988 | } | |
1989 | ||
1990 | /* This is needed by the break command since it uses the same command - but is | |
1991 | * or'ed with this value */ | |
1992 | priv->last_set_data_urb_value = urb_value; | |
5c09d144 | 1993 | |
1da177e4 | 1994 | if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
5c09d144 | 1995 | FTDI_SIO_SET_DATA_REQUEST, |
1da177e4 LT |
1996 | FTDI_SIO_SET_DATA_REQUEST_TYPE, |
1997 | urb_value , priv->interface, | |
279e1545 | 1998 | buf, 0, WDR_SHORT_TIMEOUT) < 0) { |
1da177e4 | 1999 | err("%s FAILED to set databits/stopbits/parity", __FUNCTION__); |
5c09d144 | 2000 | } |
1da177e4 LT |
2001 | |
2002 | /* Now do the baudrate */ | |
2003 | if ((cflag & CBAUD) == B0 ) { | |
2004 | /* Disable flow control */ | |
2005 | if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
5c09d144 | 2006 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, |
1da177e4 | 2007 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, |
5c09d144 | 2008 | 0, priv->interface, |
1da177e4 LT |
2009 | buf, 0, WDR_TIMEOUT) < 0) { |
2010 | err("%s error from disable flowcontrol urb", __FUNCTION__); | |
5c09d144 | 2011 | } |
1da177e4 | 2012 | /* Drop RTS and DTR */ |
74ede0ff | 2013 | clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); |
1da177e4 LT |
2014 | } else { |
2015 | /* set the baudrate determined before */ | |
2016 | if (change_speed(port)) { | |
72a755fc PF |
2017 | err("%s urb failed to set baudrate", __FUNCTION__); |
2018 | } | |
2019 | /* Ensure RTS and DTR are raised when baudrate changed from 0 */ | |
57845bd1 | 2020 | if (!old_termios || (old_termios->c_cflag & CBAUD) == B0) { |
72a755fc | 2021 | set_mctrl(port, TIOCM_DTR | TIOCM_RTS); |
1da177e4 | 2022 | } |
1da177e4 LT |
2023 | } |
2024 | ||
2025 | /* Set flow control */ | |
2026 | /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */ | |
2027 | if (cflag & CRTSCTS) { | |
2028 | dbg("%s Setting to CRTSCTS flow control", __FUNCTION__); | |
5c09d144 | 2029 | if (usb_control_msg(dev, |
1da177e4 | 2030 | usb_sndctrlpipe(dev, 0), |
5c09d144 | 2031 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, |
1da177e4 LT |
2032 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, |
2033 | 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface), | |
2034 | buf, 0, WDR_TIMEOUT) < 0) { | |
2035 | err("urb failed to set to rts/cts flow control"); | |
5c09d144 DB |
2036 | } |
2037 | ||
2038 | } else { | |
1da177e4 LT |
2039 | /* |
2040 | * Xon/Xoff code | |
2041 | * | |
2042 | * Check the IXOFF status in the iflag component of the termios structure | |
2043 | * if IXOFF is not set, the pre-xon/xoff code is executed. | |
2044 | */ | |
2045 | if (iflag & IXOFF) { | |
2046 | dbg("%s request to enable xonxoff iflag=%04x",__FUNCTION__,iflag); | |
2047 | // Try to enable the XON/XOFF on the ftdi_sio | |
2048 | // Set the vstart and vstop -- could have been done up above where | |
2049 | // a lot of other dereferencing is done but that would be very | |
2050 | // inefficient as vstart and vstop are not always needed | |
2051 | vstart=port->tty->termios->c_cc[VSTART]; | |
2052 | vstop=port->tty->termios->c_cc[VSTOP]; | |
2053 | urb_value=(vstop << 8) | (vstart); | |
2054 | ||
2055 | if (usb_control_msg(dev, | |
2056 | usb_sndctrlpipe(dev, 0), | |
2057 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, | |
2058 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, | |
2059 | urb_value , (FTDI_SIO_XON_XOFF_HS | |
2060 | | priv->interface), | |
2061 | buf, 0, WDR_TIMEOUT) < 0) { | |
2062 | err("urb failed to set to xon/xoff flow control"); | |
2063 | } | |
2064 | } else { | |
2065 | /* else clause to only run if cfag ! CRTSCTS and iflag ! XOFF */ | |
2066 | /* CHECKME Assuming XON/XOFF handled by tty stack - not by device */ | |
2067 | dbg("%s Turning off hardware flow control", __FUNCTION__); | |
5c09d144 | 2068 | if (usb_control_msg(dev, |
1da177e4 | 2069 | usb_sndctrlpipe(dev, 0), |
5c09d144 | 2070 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, |
1da177e4 | 2071 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, |
5c09d144 | 2072 | 0, priv->interface, |
1da177e4 LT |
2073 | buf, 0, WDR_TIMEOUT) < 0) { |
2074 | err("urb failed to clear flow control"); | |
5c09d144 | 2075 | } |
1da177e4 | 2076 | } |
5c09d144 | 2077 | |
1da177e4 LT |
2078 | } |
2079 | return; | |
2080 | } /* ftdi_termios */ | |
2081 | ||
2082 | ||
2083 | static int ftdi_tiocmget (struct usb_serial_port *port, struct file *file) | |
2084 | { | |
2085 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
2086 | unsigned char buf[2]; | |
2087 | int ret; | |
2088 | ||
2089 | dbg("%s TIOCMGET", __FUNCTION__); | |
2090 | switch (priv->chip_type) { | |
2091 | case SIO: | |
2092 | /* Request the status from the device */ | |
5c09d144 | 2093 | if ((ret = usb_control_msg(port->serial->dev, |
1da177e4 | 2094 | usb_rcvctrlpipe(port->serial->dev, 0), |
5c09d144 | 2095 | FTDI_SIO_GET_MODEM_STATUS_REQUEST, |
1da177e4 | 2096 | FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE, |
5c09d144 | 2097 | 0, 0, |
1da177e4 LT |
2098 | buf, 1, WDR_TIMEOUT)) < 0 ) { |
2099 | err("%s Could not get modem status of device - err: %d", __FUNCTION__, | |
2100 | ret); | |
2101 | return(ret); | |
2102 | } | |
2103 | break; | |
2104 | case FT8U232AM: | |
2105 | case FT232BM: | |
2106 | case FT2232C: | |
ed6e5282 | 2107 | case FT232RL: |
1da177e4 LT |
2108 | /* the 8U232AM returns a two byte value (the sio is a 1 byte value) - in the same |
2109 | format as the data returned from the in point */ | |
5c09d144 | 2110 | if ((ret = usb_control_msg(port->serial->dev, |
1da177e4 | 2111 | usb_rcvctrlpipe(port->serial->dev, 0), |
5c09d144 | 2112 | FTDI_SIO_GET_MODEM_STATUS_REQUEST, |
1da177e4 | 2113 | FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE, |
5c09d144 | 2114 | 0, priv->interface, |
1da177e4 LT |
2115 | buf, 2, WDR_TIMEOUT)) < 0 ) { |
2116 | err("%s Could not get modem status of device - err: %d", __FUNCTION__, | |
2117 | ret); | |
2118 | return(ret); | |
2119 | } | |
2120 | break; | |
2121 | default: | |
2122 | return -EFAULT; | |
2123 | break; | |
2124 | } | |
5c09d144 | 2125 | |
1da177e4 LT |
2126 | return (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) | |
2127 | (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) | | |
2128 | (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) | | |
2129 | (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0) | | |
5c09d144 | 2130 | priv->last_dtr_rts; |
1da177e4 LT |
2131 | } |
2132 | ||
2133 | static int ftdi_tiocmset(struct usb_serial_port *port, struct file * file, unsigned int set, unsigned int clear) | |
2134 | { | |
1da177e4 | 2135 | dbg("%s TIOCMSET", __FUNCTION__); |
74ede0ff | 2136 | return update_mctrl(port, set, clear); |
1da177e4 LT |
2137 | } |
2138 | ||
2139 | ||
2140 | static int ftdi_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) | |
2141 | { | |
2142 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
2143 | ||
1da177e4 LT |
2144 | dbg("%s cmd 0x%04x", __FUNCTION__, cmd); |
2145 | ||
2146 | /* Based on code from acm.c and others */ | |
2147 | switch (cmd) { | |
2148 | ||
1da177e4 LT |
2149 | case TIOCGSERIAL: /* gets serial port data */ |
2150 | return get_serial_info(port, (struct serial_struct __user *) arg); | |
2151 | ||
2152 | case TIOCSSERIAL: /* sets serial port data */ | |
2153 | return set_serial_info(port, (struct serial_struct __user *) arg); | |
2154 | ||
2155 | /* | |
2156 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
2157 | * - mask passed in arg for lines of interest | |
2158 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
2159 | * Caller should use TIOCGICOUNT to see which one it was. | |
2160 | * | |
2161 | * This code is borrowed from linux/drivers/char/serial.c | |
2162 | */ | |
2163 | case TIOCMIWAIT: | |
2164 | while (priv != NULL) { | |
2165 | interruptible_sleep_on(&priv->delta_msr_wait); | |
2166 | /* see if a signal did it */ | |
2167 | if (signal_pending(current)) | |
2168 | return -ERESTARTSYS; | |
2169 | else { | |
2170 | char diff = priv->diff_status; | |
2171 | ||
2172 | if (diff == 0) { | |
2173 | return -EIO; /* no change => error */ | |
2174 | } | |
2175 | ||
2176 | /* Consume all events */ | |
2177 | priv->diff_status = 0; | |
2178 | ||
2179 | /* Return 0 if caller wanted to know about these bits */ | |
2180 | if ( ((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) || | |
2181 | ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) || | |
2182 | ((arg & TIOCM_CD) && (diff & FTDI_RS0_RLSD)) || | |
2183 | ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS)) ) { | |
2184 | return 0; | |
2185 | } | |
2186 | /* | |
2187 | * Otherwise caller can't care less about what happened, | |
2188 | * and so we continue to wait for more events. | |
2189 | */ | |
2190 | } | |
2191 | } | |
2192 | return(0); | |
2193 | break; | |
2194 | default: | |
2195 | break; | |
5c09d144 | 2196 | |
1da177e4 LT |
2197 | } |
2198 | ||
2199 | ||
5c09d144 | 2200 | /* This is not necessarily an error - turns out the higher layers will do |
1da177e4 LT |
2201 | * some ioctls itself (see comment above) |
2202 | */ | |
2203 | dbg("%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h", __FUNCTION__, cmd); | |
2204 | ||
2205 | return(-ENOIOCTLCMD); | |
2206 | } /* ftdi_ioctl */ | |
2207 | ||
2208 | ||
2209 | static void ftdi_throttle (struct usb_serial_port *port) | |
2210 | { | |
2211 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
2212 | unsigned long flags; | |
2213 | ||
2214 | dbg("%s - port %d", __FUNCTION__, port->number); | |
2215 | ||
2216 | spin_lock_irqsave(&priv->rx_lock, flags); | |
2217 | priv->rx_flags |= THROTTLED; | |
2218 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
2219 | } | |
2220 | ||
2221 | ||
2222 | static void ftdi_unthrottle (struct usb_serial_port *port) | |
2223 | { | |
2224 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
2225 | int actually_throttled; | |
2226 | unsigned long flags; | |
2227 | ||
2228 | dbg("%s - port %d", __FUNCTION__, port->number); | |
2229 | ||
2230 | spin_lock_irqsave(&priv->rx_lock, flags); | |
2231 | actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED; | |
2232 | priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED); | |
2233 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
2234 | ||
2235 | if (actually_throttled) | |
c4028958 | 2236 | schedule_delayed_work(&priv->rx_work, 0); |
1da177e4 LT |
2237 | } |
2238 | ||
2239 | static int __init ftdi_init (void) | |
2240 | { | |
2241 | int retval; | |
2242 | ||
2243 | dbg("%s", __FUNCTION__); | |
fdcb0a0f IA |
2244 | if (vendor > 0 && product > 0) { |
2245 | /* Add user specified VID/PID to reserved element of table. */ | |
2246 | int i; | |
2247 | for (i = 0; id_table_combined[i].idVendor; i++) | |
2248 | ; | |
2249 | id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
2250 | id_table_combined[i].idVendor = vendor; | |
2251 | id_table_combined[i].idProduct = product; | |
2252 | } | |
8f977e42 | 2253 | retval = usb_serial_register(&ftdi_sio_device); |
1da177e4 | 2254 | if (retval) |
8f977e42 | 2255 | goto failed_sio_register; |
1da177e4 | 2256 | retval = usb_register(&ftdi_driver); |
5c09d144 | 2257 | if (retval) |
1da177e4 LT |
2258 | goto failed_usb_register; |
2259 | ||
2260 | info(DRIVER_VERSION ":" DRIVER_DESC); | |
2261 | return 0; | |
2262 | failed_usb_register: | |
8f977e42 IA |
2263 | usb_serial_deregister(&ftdi_sio_device); |
2264 | failed_sio_register: | |
1da177e4 LT |
2265 | return retval; |
2266 | } | |
2267 | ||
2268 | ||
2269 | static void __exit ftdi_exit (void) | |
2270 | { | |
2271 | ||
2272 | dbg("%s", __FUNCTION__); | |
2273 | ||
2274 | usb_deregister (&ftdi_driver); | |
8f977e42 | 2275 | usb_serial_deregister (&ftdi_sio_device); |
1da177e4 LT |
2276 | |
2277 | } | |
2278 | ||
2279 | ||
2280 | module_init(ftdi_init); | |
2281 | module_exit(ftdi_exit); | |
2282 | ||
2283 | MODULE_AUTHOR( DRIVER_AUTHOR ); | |
2284 | MODULE_DESCRIPTION( DRIVER_DESC ); | |
2285 | MODULE_LICENSE("GPL"); | |
2286 | ||
2287 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
2288 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
fdcb0a0f IA |
2289 | module_param(vendor, ushort, 0); |
2290 | MODULE_PARM_DESC(vendor, "User specified vendor ID (default=" | |
2291 | __MODULE_STRING(FTDI_VID)")"); | |
2292 | module_param(product, ushort, 0); | |
2293 | MODULE_PARM_DESC(vendor, "User specified product ID"); | |
1da177e4 | 2294 |