Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * USB FTDI SIO driver |
| 3 | * |
| 4 | * Copyright (C) 1999 - 2001 |
| 5 | * Greg Kroah-Hartman (greg@kroah.com) |
| 6 | * Bill Ryder (bryder@sgi.com) |
| 7 | * Copyright (C) 2002 |
| 8 | * Kuba Ober (kuba@mareimbrium.org) |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * See Documentation/usb/usb-serial.txt for more information on using this 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. |
| 35 | * |
| 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. |
| 72 | * |
| 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 |
Steven Cole | 093cf72 | 2005-05-03 19:07:24 -0600 | [diff] [blame] | 79 | * Added support for Home Electronics Tira-1 IR transceiver using FT232BM chip. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | * See <http://www.home-electro.com/tira1.htm>. Only operates properly |
| 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 |
| 86 | * Philipp Gühring's patch for 2.5.x kernel). |
| 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 |
Steven Cole | 093cf72 | 2005-05-03 19:07:24 -0600 | [diff] [blame] | 94 | * Added support for USB-UIRT IR transceiver using 8U232AM chip. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) |
| 140 | * Added CrystalFontz 632 and 634 PIDs |
| 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 |
| 147 | * |
| 148 | * |
| 149 | * |
| 150 | * |
| 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. |
| 161 | * |
| 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. |
| 182 | * |
| 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. |
| 191 | * |
| 192 | * (04/08/2001) gb |
| 193 | * Identify version on module load. |
| 194 | * |
| 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 |
| 200 | * |
| 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 |
| 214 | * |
| 215 | * (11/01/2000) Adam J. Richter |
| 216 | * usb_device_id table support |
| 217 | * |
| 218 | * (10/05/2000) gkh |
| 219 | * Fixed bug with urb->dev not being set properly, now that the usb |
| 220 | * core needs it. |
| 221 | * |
| 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 | * |
| 229 | * (04/04/2000) Bill Ryder |
| 230 | * Fixed bugs in TCGET/TCSET ioctls (by removing them - they are |
| 231 | * handled elsewhere in the tty io driver chain). |
| 232 | * |
| 233 | * (03/30/2000) Bill Ryder |
| 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 | |
| 248 | #include <linux/config.h> |
| 249 | #include <linux/kernel.h> |
| 250 | #include <linux/errno.h> |
| 251 | #include <linux/init.h> |
| 252 | #include <linux/slab.h> |
| 253 | #include <linux/tty.h> |
| 254 | #include <linux/tty_driver.h> |
| 255 | #include <linux/tty_flip.h> |
| 256 | #include <linux/module.h> |
| 257 | #include <linux/spinlock.h> |
| 258 | #include <asm/uaccess.h> |
| 259 | #include <linux/usb.h> |
| 260 | #include <linux/serial.h> |
| 261 | #include "usb-serial.h" |
| 262 | #include "ftdi_sio.h" |
| 263 | |
| 264 | /* |
| 265 | * Version Information |
| 266 | */ |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 267 | #define DRIVER_VERSION "v1.4.3" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober <kuba@mareimbrium.org>" |
| 269 | #define DRIVER_DESC "USB FTDI Serial Converters Driver" |
| 270 | |
| 271 | static int debug; |
Ian Abbott | fdcb0a0 | 2005-07-28 18:40:32 +0100 | [diff] [blame] | 272 | static __u16 vendor = FTDI_VID; |
| 273 | static __u16 product; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 275 | /* struct ftdi_sio_quirk is used by devices requiring special attention. */ |
| 276 | struct ftdi_sio_quirk { |
| 277 | void (*setup)(struct usb_serial *); /* Special settings during startup. */ |
| 278 | }; |
| 279 | |
| 280 | static void ftdi_USB_UIRT_setup (struct usb_serial *serial); |
| 281 | static void ftdi_HE_TIRA1_setup (struct usb_serial *serial); |
| 282 | |
| 283 | static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = { |
| 284 | .setup = ftdi_USB_UIRT_setup, |
| 285 | }; |
| 286 | |
| 287 | static struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = { |
| 288 | .setup = ftdi_HE_TIRA1_setup, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | }; |
| 290 | |
| 291 | /* |
| 292 | * The 8U232AM has the same API as the sio except for: |
| 293 | * - it can support MUCH higher baudrates; up to: |
| 294 | * o 921600 for RS232 and 2000000 for RS422/485 at 48MHz |
| 295 | * o 230400 at 12MHz |
| 296 | * so .. 8U232AM's baudrate setting codes are different |
| 297 | * - it has a two byte status code. |
| 298 | * - it returns characters every 16ms (the FTDI does it every 40ms) |
| 299 | * |
| 300 | * the bcdDevice value is used to differentiate FT232BM and FT245BM from |
| 301 | * the earlier FT8U232AM and FT8U232BM. For now, include all known VID/PID |
| 302 | * combinations in both tables. |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 303 | * FIXME: perhaps bcdDevice can also identify 12MHz FT8U232AM devices, |
| 304 | * but I don't know if those ever went into mass production. [Ian Abbott] |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | */ |
| 306 | |
| 307 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | |
| 309 | static struct usb_device_id id_table_combined [] = { |
| 310 | { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) }, |
| 311 | { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) }, |
| 312 | { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) }, |
| 313 | { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) }, |
| 315 | { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) }, |
| 316 | { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) }, |
| 317 | { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) }, |
| 318 | { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) }, |
| 319 | { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) }, |
| 320 | { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) }, |
| 321 | { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) }, |
| 322 | { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) }, |
| 323 | { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) }, |
| 324 | { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) }, |
| 325 | { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) }, |
| 326 | { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) }, |
| 327 | { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) }, |
| 328 | { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) }, |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 329 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) }, |
| 330 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) }, |
| 331 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) }, |
| 332 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) }, |
| 333 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) }, |
| 334 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) }, |
| 335 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) }, |
| 336 | { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) }, |
| 338 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) }, |
| 339 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) }, |
| 340 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) }, |
| 341 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) }, |
| 342 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) }, |
| 343 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) }, |
| 344 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) }, |
| 345 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) }, |
| 346 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) }, |
| 347 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) }, |
| 348 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) }, |
| 349 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) }, |
| 350 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) }, |
| 351 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) }, |
| 352 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) }, |
| 353 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) }, |
| 354 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) }, |
| 355 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) }, |
| 356 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) }, |
| 357 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) }, |
| 358 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) }, |
| 359 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) }, |
| 360 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) }, |
| 361 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) }, |
| 362 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) }, |
| 363 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) }, |
| 364 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) }, |
| 365 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) }, |
| 366 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) }, |
| 367 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) }, |
| 368 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) }, |
| 369 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) }, |
| 370 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) }, |
| 371 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) }, |
| 372 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) }, |
| 373 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) }, |
| 374 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) }, |
| 375 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) }, |
| 376 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) }, |
| 377 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) }, |
| 378 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) }, |
| 379 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) }, |
| 380 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) }, |
| 381 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) }, |
| 382 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) }, |
| 383 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) }, |
| 384 | { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) }, |
| 385 | { USB_DEVICE(OCT_VID, OCT_US101_PID) }, |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 386 | { USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID), |
| 387 | .driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk }, |
| 388 | { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID), |
| 389 | .driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) }, |
| 391 | { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) }, |
| 392 | { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) }, |
| 393 | { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) }, |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 394 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) }, |
| 395 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) }, |
| 396 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) }, |
| 397 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) }, |
| 398 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) }, |
| 399 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) }, |
| 400 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) }, |
| 401 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) }, |
| 402 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) }, |
| 403 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) }, |
| 404 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) }, |
| 405 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) }, |
| 406 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) }, |
| 407 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) }, |
| 408 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) }, |
| 409 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) }, |
Ian Abbott | 4790074 | 2005-05-17 15:12:13 +0100 | [diff] [blame] | 411 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) }, |
Ian Abbott | e6ac4a4 | 2005-08-02 14:01:27 +0100 | [diff] [blame] | 412 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) }, |
| 413 | { USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) }, |
Thomas Riewe | 207c47e | 2005-09-29 14:57:29 +0200 | [diff] [blame] | 414 | { USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) }, |
Martin Hagelin | bde6218 | 2005-10-26 21:10:41 +0200 | [diff] [blame] | 415 | { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) }, |
Ian Abbott | e6ac4a4 | 2005-08-02 14:01:27 +0100 | [diff] [blame] | 416 | /* |
| 417 | * These will probably use user-space drivers. Uncomment them if |
| 418 | * you need them or use the user-specified vendor/product module |
| 419 | * parameters (see ftdi_sio.h for the numbers). Make a fuss if |
| 420 | * you think the driver should recognize any of them by default. |
| 421 | */ |
| 422 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) }, */ |
| 423 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) }, */ |
| 424 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) }, */ |
| 425 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) }, */ |
| 426 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) }, */ |
| 427 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) }, */ |
| 428 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) }, */ |
| 429 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) }, */ |
| 430 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) }, */ |
| 431 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) }, */ |
| 432 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) }, */ |
Ian Abbott | e6ac4a4 | 2005-08-02 14:01:27 +0100 | [diff] [blame] | 433 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) }, */ |
| 434 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) }, */ |
| 435 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) }, */ |
| 436 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) }, */ |
| 437 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) }, */ |
| 438 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) }, */ |
| 439 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) }, */ |
| 440 | /* { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) }, */ |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 441 | { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) }, |
| 442 | { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) }, |
| 443 | { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) }, |
| 444 | { USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) }, |
| 445 | { USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) }, |
| 447 | { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) }, |
| 448 | { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) }, |
| 449 | { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) }, |
| 450 | { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) }, |
| 451 | { USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) }, |
Ian Abbott | e6ac4a4 | 2005-08-02 14:01:27 +0100 | [diff] [blame] | 452 | { USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | { USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) }, |
Ian Abbott | 6f92872 | 2005-04-29 16:06:14 +0100 | [diff] [blame] | 454 | { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) }, |
| 456 | { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) }, |
| 457 | { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) }, |
| 458 | { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) }, |
Ian Abbott | 6f92872 | 2005-04-29 16:06:14 +0100 | [diff] [blame] | 459 | { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_0_PID) }, |
| 460 | { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) }, |
| 461 | { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) }, |
Ian Abbott | e6ac4a4 | 2005-08-02 14:01:27 +0100 | [diff] [blame] | 462 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) }, |
| 463 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) }, |
| 464 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) }, |
| 465 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) }, |
| 466 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) }, |
| 467 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) }, |
| 468 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) }, |
| 469 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) }, |
Ian Abbott | 6f92872 | 2005-04-29 16:06:14 +0100 | [diff] [blame] | 470 | { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) }, |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 471 | { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) }, |
Ian Abbott | 9b1513d | 2005-07-29 12:16:31 -0700 | [diff] [blame] | 472 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) }, |
| 473 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) }, |
Ian Abbott | 740a428 | 2005-12-13 16:18:47 +0000 | [diff] [blame] | 474 | { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) }, |
| 475 | { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) }, |
Ian Abbott | 9b1513d | 2005-07-29 12:16:31 -0700 | [diff] [blame] | 476 | { USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) }, |
Rui Santos | c9c7746 | 2005-09-23 20:06:50 +0100 | [diff] [blame] | 477 | { USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) }, |
| 478 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) }, |
| 479 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) }, |
Ian Abbott | b4723ae | 2005-11-23 15:45:23 -0800 | [diff] [blame] | 480 | { USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) }, |
| 481 | { USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) }, |
Pavel Fedin | effac8b | 2005-12-09 09:30:59 +0300 | [diff] [blame] | 482 | { USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) }, |
Louis Nyffenegger | 641adaa | 2006-01-05 17:20:37 +0100 | [diff] [blame^] | 483 | { USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) }, |
Ian Abbott | fdcb0a0 | 2005-07-28 18:40:32 +0100 | [diff] [blame] | 484 | { }, /* Optional parameter entry */ |
| 485 | { } /* Terminating entry */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | }; |
| 487 | |
| 488 | MODULE_DEVICE_TABLE (usb, id_table_combined); |
| 489 | |
| 490 | static struct usb_driver ftdi_driver = { |
| 491 | .name = "ftdi_sio", |
| 492 | .probe = usb_serial_probe, |
| 493 | .disconnect = usb_serial_disconnect, |
| 494 | .id_table = id_table_combined, |
Greg Kroah-Hartman | ba9dc65 | 2005-11-16 13:41:28 -0800 | [diff] [blame] | 495 | .no_dynamic_id = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | }; |
| 497 | |
Arjan van de Ven | 4c4c943 | 2005-11-29 09:43:42 +0100 | [diff] [blame] | 498 | static const char *ftdi_chip_name[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | [SIO] = "SIO", /* the serial part of FT8U100AX */ |
| 500 | [FT8U232AM] = "FT8U232AM", |
| 501 | [FT232BM] = "FT232BM", |
| 502 | [FT2232C] = "FT2232C", |
| 503 | }; |
| 504 | |
| 505 | |
| 506 | /* Constants for read urb and write urb */ |
| 507 | #define BUFSZ 512 |
| 508 | #define PKTSZ 64 |
| 509 | |
| 510 | /* rx_flags */ |
| 511 | #define THROTTLED 0x01 |
| 512 | #define ACTUALLY_THROTTLED 0x02 |
| 513 | |
| 514 | struct ftdi_private { |
| 515 | ftdi_chip_type_t chip_type; |
| 516 | /* type of the device, either SIO or FT8U232AM */ |
| 517 | int baud_base; /* baud base clock for divisor setting */ |
| 518 | int custom_divisor; /* custom_divisor kludge, this is for baud_base (different from what goes to the chip!) */ |
| 519 | __u16 last_set_data_urb_value ; |
| 520 | /* the last data state set - needed for doing a break */ |
| 521 | int write_offset; /* This is the offset in the usb data block to write the serial data - |
| 522 | * it is different between devices |
| 523 | */ |
| 524 | int flags; /* some ASYNC_xxxx flags are supported */ |
| 525 | unsigned long last_dtr_rts; /* saved modem control outputs */ |
| 526 | wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */ |
| 527 | char prev_status, diff_status; /* Used for TIOCMIWAIT */ |
| 528 | __u8 rx_flags; /* receive state flags (throttling) */ |
| 529 | spinlock_t rx_lock; /* spinlock for receive state */ |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 530 | struct work_struct rx_work; |
| 531 | int rx_processed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | |
| 533 | __u16 interface; /* FT2232C port interface (0 for FT232/245) */ |
| 534 | |
| 535 | int force_baud; /* if non-zero, force the baud rate to this value */ |
| 536 | int force_rtscts; /* if non-zero, force RTS-CTS to always be enabled */ |
| 537 | }; |
| 538 | |
| 539 | /* Used for TIOCMIWAIT */ |
| 540 | #define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD) |
| 541 | #define FTDI_STATUS_B1_MASK (FTDI_RS_BI) |
| 542 | /* End TIOCMIWAIT */ |
| 543 | |
| 544 | #define FTDI_IMPL_ASYNC_FLAGS = ( ASYNC_SPD_HI | ASYNC_SPD_VHI \ |
| 545 | ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP ) |
| 546 | |
| 547 | /* function prototypes for a FTDI serial converter */ |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 548 | static int ftdi_sio_probe (struct usb_serial *serial, const struct usb_device_id *id); |
| 549 | static int ftdi_sio_attach (struct usb_serial *serial); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | static void ftdi_shutdown (struct usb_serial *serial); |
| 551 | static int ftdi_open (struct usb_serial_port *port, struct file *filp); |
| 552 | static void ftdi_close (struct usb_serial_port *port, struct file *filp); |
| 553 | static int ftdi_write (struct usb_serial_port *port, const unsigned char *buf, int count); |
| 554 | static int ftdi_write_room (struct usb_serial_port *port); |
| 555 | static int ftdi_chars_in_buffer (struct usb_serial_port *port); |
| 556 | static void ftdi_write_bulk_callback (struct urb *urb, struct pt_regs *regs); |
| 557 | static void ftdi_read_bulk_callback (struct urb *urb, struct pt_regs *regs); |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 558 | static void ftdi_process_read (void *param); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | static void ftdi_set_termios (struct usb_serial_port *port, struct termios * old); |
| 560 | static int ftdi_tiocmget (struct usb_serial_port *port, struct file *file); |
| 561 | static int ftdi_tiocmset (struct usb_serial_port *port, struct file * file, unsigned int set, unsigned int clear); |
| 562 | static int ftdi_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg); |
| 563 | static void ftdi_break_ctl (struct usb_serial_port *port, int break_state ); |
| 564 | static void ftdi_throttle (struct usb_serial_port *port); |
| 565 | static void ftdi_unthrottle (struct usb_serial_port *port); |
| 566 | |
| 567 | static unsigned short int ftdi_232am_baud_base_to_divisor (int baud, int base); |
| 568 | static unsigned short int ftdi_232am_baud_to_divisor (int baud); |
| 569 | static __u32 ftdi_232bm_baud_base_to_divisor (int baud, int base); |
| 570 | static __u32 ftdi_232bm_baud_to_divisor (int baud); |
| 571 | |
Greg Kroah-Hartman | ea65370 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 572 | static struct usb_serial_driver ftdi_sio_device = { |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 573 | .driver = { |
| 574 | .owner = THIS_MODULE, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 575 | .name = "ftdi_sio", |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 576 | }, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 577 | .description = "FTDI USB Serial Device", |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 578 | .id_table = id_table_combined, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | .num_interrupt_in = 0, |
| 580 | .num_bulk_in = 1, |
| 581 | .num_bulk_out = 1, |
| 582 | .num_ports = 1, |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 583 | .probe = ftdi_sio_probe, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | .open = ftdi_open, |
| 585 | .close = ftdi_close, |
| 586 | .throttle = ftdi_throttle, |
| 587 | .unthrottle = ftdi_unthrottle, |
| 588 | .write = ftdi_write, |
| 589 | .write_room = ftdi_write_room, |
| 590 | .chars_in_buffer = ftdi_chars_in_buffer, |
| 591 | .read_bulk_callback = ftdi_read_bulk_callback, |
| 592 | .write_bulk_callback = ftdi_write_bulk_callback, |
| 593 | .tiocmget = ftdi_tiocmget, |
| 594 | .tiocmset = ftdi_tiocmset, |
| 595 | .ioctl = ftdi_ioctl, |
| 596 | .set_termios = ftdi_set_termios, |
| 597 | .break_ctl = ftdi_break_ctl, |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 598 | .attach = ftdi_sio_attach, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | .shutdown = ftdi_shutdown, |
| 600 | }; |
| 601 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | |
| 603 | #define WDR_TIMEOUT 5000 /* default urb timeout */ |
Ian Abbott | 279e154 | 2005-07-29 12:16:52 -0700 | [diff] [blame] | 604 | #define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | |
| 606 | /* High and low are for DTR, RTS etc etc */ |
| 607 | #define HIGH 1 |
| 608 | #define LOW 0 |
| 609 | |
| 610 | /* |
| 611 | * *************************************************************************** |
| 612 | * Utlity functions |
| 613 | * *************************************************************************** |
| 614 | */ |
| 615 | |
| 616 | static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base) |
| 617 | { |
| 618 | unsigned short int divisor; |
| 619 | int divisor3 = base / 2 / baud; // divisor shifted 3 bits to the left |
| 620 | if ((divisor3 & 0x7) == 7) divisor3 ++; // round x.7/8 up to x+1 |
| 621 | divisor = divisor3 >> 3; |
| 622 | divisor3 &= 0x7; |
| 623 | if (divisor3 == 1) divisor |= 0xc000; else // 0.125 |
| 624 | if (divisor3 >= 4) divisor |= 0x4000; else // 0.5 |
| 625 | if (divisor3 != 0) divisor |= 0x8000; // 0.25 |
| 626 | if (divisor == 1) divisor = 0; /* special case for maximum baud rate */ |
| 627 | return divisor; |
| 628 | } |
| 629 | |
| 630 | static unsigned short int ftdi_232am_baud_to_divisor(int baud) |
| 631 | { |
| 632 | return(ftdi_232am_baud_base_to_divisor(baud, 48000000)); |
| 633 | } |
| 634 | |
| 635 | static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base) |
| 636 | { |
| 637 | static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 }; |
| 638 | __u32 divisor; |
| 639 | int divisor3 = base / 2 / baud; // divisor shifted 3 bits to the left |
| 640 | divisor = divisor3 >> 3; |
| 641 | divisor |= (__u32)divfrac[divisor3 & 0x7] << 14; |
| 642 | /* Deal with special cases for highest baud rates. */ |
| 643 | if (divisor == 1) divisor = 0; else // 1.0 |
| 644 | if (divisor == 0x4001) divisor = 1; // 1.5 |
| 645 | return divisor; |
| 646 | } |
| 647 | |
| 648 | static __u32 ftdi_232bm_baud_to_divisor(int baud) |
| 649 | { |
| 650 | return(ftdi_232bm_baud_base_to_divisor(baud, 48000000)); |
| 651 | } |
| 652 | |
Ian Abbott | 74ede0f | 2005-07-29 12:16:41 -0700 | [diff] [blame] | 653 | #define set_mctrl(port, set) update_mctrl((port), (set), 0) |
| 654 | #define clear_mctrl(port, clear) update_mctrl((port), 0, (clear)) |
| 655 | |
| 656 | static int update_mctrl(struct usb_serial_port *port, unsigned int set, unsigned int clear) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | { |
| 658 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 659 | char *buf; |
Ian Abbott | 74ede0f | 2005-07-29 12:16:41 -0700 | [diff] [blame] | 660 | unsigned urb_value; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | int rv; |
Ian Abbott | 74ede0f | 2005-07-29 12:16:41 -0700 | [diff] [blame] | 662 | |
| 663 | if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) { |
| 664 | dbg("%s - DTR|RTS not being set|cleared", __FUNCTION__); |
| 665 | return 0; /* no change */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | } |
Ian Abbott | 74ede0f | 2005-07-29 12:16:41 -0700 | [diff] [blame] | 667 | |
| 668 | buf = kmalloc(1, GFP_NOIO); |
| 669 | if (!buf) { |
| 670 | return -ENOMEM; |
| 671 | } |
| 672 | |
| 673 | clear &= ~set; /* 'set' takes precedence over 'clear' */ |
| 674 | urb_value = 0; |
| 675 | if (clear & TIOCM_DTR) |
| 676 | urb_value |= FTDI_SIO_SET_DTR_LOW; |
| 677 | if (clear & TIOCM_RTS) |
| 678 | urb_value |= FTDI_SIO_SET_RTS_LOW; |
| 679 | if (set & TIOCM_DTR) |
| 680 | urb_value |= FTDI_SIO_SET_DTR_HIGH; |
| 681 | if (set & TIOCM_RTS) |
| 682 | urb_value |= FTDI_SIO_SET_RTS_HIGH; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | rv = usb_control_msg(port->serial->dev, |
| 684 | usb_sndctrlpipe(port->serial->dev, 0), |
| 685 | FTDI_SIO_SET_MODEM_CTRL_REQUEST, |
| 686 | FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE, |
Ian Abbott | 74ede0f | 2005-07-29 12:16:41 -0700 | [diff] [blame] | 687 | urb_value, priv->interface, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | buf, 0, WDR_TIMEOUT); |
| 689 | |
| 690 | kfree(buf); |
Ian Abbott | 74ede0f | 2005-07-29 12:16:41 -0700 | [diff] [blame] | 691 | if (rv < 0) { |
| 692 | err("%s Error from MODEM_CTRL urb: DTR %s, RTS %s", |
| 693 | __FUNCTION__, |
| 694 | (set & TIOCM_DTR) ? "HIGH" : |
| 695 | (clear & TIOCM_DTR) ? "LOW" : "unchanged", |
| 696 | (set & TIOCM_RTS) ? "HIGH" : |
| 697 | (clear & TIOCM_RTS) ? "LOW" : "unchanged"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | } else { |
Ian Abbott | 74ede0f | 2005-07-29 12:16:41 -0700 | [diff] [blame] | 699 | dbg("%s - DTR %s, RTS %s", __FUNCTION__, |
| 700 | (set & TIOCM_DTR) ? "HIGH" : |
| 701 | (clear & TIOCM_DTR) ? "LOW" : "unchanged", |
| 702 | (set & TIOCM_RTS) ? "HIGH" : |
| 703 | (clear & TIOCM_RTS) ? "LOW" : "unchanged"); |
| 704 | priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | return rv; |
| 707 | } |
| 708 | |
| 709 | |
| 710 | static __u32 get_ftdi_divisor(struct usb_serial_port * port); |
| 711 | |
| 712 | |
| 713 | static int change_speed(struct usb_serial_port *port) |
| 714 | { |
| 715 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 716 | char *buf; |
| 717 | __u16 urb_value; |
| 718 | __u16 urb_index; |
| 719 | __u32 urb_index_value; |
| 720 | int rv; |
| 721 | |
| 722 | buf = kmalloc(1, GFP_NOIO); |
| 723 | if (!buf) |
| 724 | return -ENOMEM; |
| 725 | |
| 726 | urb_index_value = get_ftdi_divisor(port); |
| 727 | urb_value = (__u16)urb_index_value; |
| 728 | urb_index = (__u16)(urb_index_value >> 16); |
| 729 | if (priv->interface) { /* FT2232C */ |
| 730 | urb_index = (__u16)((urb_index << 8) | priv->interface); |
| 731 | } |
| 732 | |
| 733 | rv = usb_control_msg(port->serial->dev, |
| 734 | usb_sndctrlpipe(port->serial->dev, 0), |
| 735 | FTDI_SIO_SET_BAUDRATE_REQUEST, |
| 736 | FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE, |
| 737 | urb_value, urb_index, |
Ian Abbott | 279e154 | 2005-07-29 12:16:52 -0700 | [diff] [blame] | 738 | buf, 0, WDR_SHORT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | |
| 740 | kfree(buf); |
| 741 | return rv; |
| 742 | } |
| 743 | |
| 744 | |
| 745 | static __u32 get_ftdi_divisor(struct usb_serial_port * port) |
| 746 | { /* get_ftdi_divisor */ |
| 747 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 748 | __u32 div_value = 0; |
| 749 | int div_okay = 1; |
| 750 | int baud; |
| 751 | |
| 752 | /* |
| 753 | * The logic involved in setting the baudrate can be cleanly split in 3 steps. |
| 754 | * Obtaining the actual baud rate is a little tricky since unix traditionally |
| 755 | * somehow ignored the possibility to set non-standard baud rates. |
| 756 | * 1. Standard baud rates are set in tty->termios->c_cflag |
| 757 | * 2. If these are not enough, you can set any speed using alt_speed as follows: |
| 758 | * - set tty->termios->c_cflag speed to B38400 |
| 759 | * - set your real speed in tty->alt_speed; it gets ignored when |
| 760 | * alt_speed==0, (or) |
| 761 | * - call TIOCSSERIAL ioctl with (struct serial_struct) set as follows: |
| 762 | * flags & ASYNC_SPD_MASK == ASYNC_SPD_[HI, VHI, SHI, WARP], this just |
| 763 | * sets alt_speed to (HI: 57600, VHI: 115200, SHI: 230400, WARP: 460800) |
| 764 | * ** Steps 1, 2 are done courtesy of tty_get_baud_rate |
| 765 | * 3. You can also set baud rate by setting custom divisor as follows |
| 766 | * - set tty->termios->c_cflag speed to B38400 |
| 767 | * - call TIOCSSERIAL ioctl with (struct serial_struct) set as follows: |
| 768 | * o flags & ASYNC_SPD_MASK == ASYNC_SPD_CUST |
| 769 | * o custom_divisor set to baud_base / your_new_baudrate |
| 770 | * ** Step 3 is done courtesy of code borrowed from serial.c - I should really |
| 771 | * spend some time and separate+move this common code to serial.c, it is |
| 772 | * replicated in nearly every serial driver you see. |
| 773 | */ |
| 774 | |
| 775 | /* 1. Get the baud rate from the tty settings, this observes alt_speed hack */ |
| 776 | |
| 777 | baud = tty_get_baud_rate(port->tty); |
| 778 | dbg("%s - tty_get_baud_rate reports speed %d", __FUNCTION__, baud); |
| 779 | |
| 780 | /* 2. Observe async-compatible custom_divisor hack, update baudrate if needed */ |
| 781 | |
| 782 | if (baud == 38400 && |
| 783 | ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) && |
| 784 | (priv->custom_divisor)) { |
| 785 | baud = priv->baud_base / priv->custom_divisor; |
| 786 | dbg("%s - custom divisor %d sets baud rate to %d", __FUNCTION__, priv->custom_divisor, baud); |
| 787 | } |
| 788 | |
| 789 | /* 3. Convert baudrate to device-specific divisor */ |
| 790 | |
| 791 | if (!baud) baud = 9600; |
| 792 | switch(priv->chip_type) { |
| 793 | case SIO: /* SIO chip */ |
| 794 | switch(baud) { |
| 795 | case 300: div_value = ftdi_sio_b300; break; |
| 796 | case 600: div_value = ftdi_sio_b600; break; |
| 797 | case 1200: div_value = ftdi_sio_b1200; break; |
| 798 | case 2400: div_value = ftdi_sio_b2400; break; |
| 799 | case 4800: div_value = ftdi_sio_b4800; break; |
| 800 | case 9600: div_value = ftdi_sio_b9600; break; |
| 801 | case 19200: div_value = ftdi_sio_b19200; break; |
| 802 | case 38400: div_value = ftdi_sio_b38400; break; |
| 803 | case 57600: div_value = ftdi_sio_b57600; break; |
| 804 | case 115200: div_value = ftdi_sio_b115200; break; |
| 805 | } /* baud */ |
| 806 | if (div_value == 0) { |
| 807 | dbg("%s - Baudrate (%d) requested is not supported", __FUNCTION__, baud); |
| 808 | div_value = ftdi_sio_b9600; |
| 809 | div_okay = 0; |
| 810 | } |
| 811 | break; |
| 812 | case FT8U232AM: /* 8U232AM chip */ |
| 813 | if (baud <= 3000000) { |
| 814 | div_value = ftdi_232am_baud_to_divisor(baud); |
| 815 | } else { |
| 816 | dbg("%s - Baud rate too high!", __FUNCTION__); |
| 817 | div_value = ftdi_232am_baud_to_divisor(9600); |
| 818 | div_okay = 0; |
| 819 | } |
| 820 | break; |
| 821 | case FT232BM: /* FT232BM chip */ |
| 822 | case FT2232C: /* FT2232C chip */ |
| 823 | if (baud <= 3000000) { |
| 824 | div_value = ftdi_232bm_baud_to_divisor(baud); |
| 825 | } else { |
| 826 | dbg("%s - Baud rate too high!", __FUNCTION__); |
| 827 | div_value = ftdi_232bm_baud_to_divisor(9600); |
| 828 | div_okay = 0; |
| 829 | } |
| 830 | break; |
| 831 | } /* priv->chip_type */ |
| 832 | |
| 833 | if (div_okay) { |
| 834 | dbg("%s - Baud rate set to %d (divisor 0x%lX) on chip %s", |
| 835 | __FUNCTION__, baud, (unsigned long)div_value, |
| 836 | ftdi_chip_name[priv->chip_type]); |
| 837 | } |
| 838 | |
| 839 | return(div_value); |
| 840 | } |
| 841 | |
| 842 | |
| 843 | static int get_serial_info(struct usb_serial_port * port, struct serial_struct __user * retinfo) |
| 844 | { |
| 845 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 846 | struct serial_struct tmp; |
| 847 | |
| 848 | if (!retinfo) |
| 849 | return -EFAULT; |
| 850 | memset(&tmp, 0, sizeof(tmp)); |
| 851 | tmp.flags = priv->flags; |
| 852 | tmp.baud_base = priv->baud_base; |
| 853 | tmp.custom_divisor = priv->custom_divisor; |
| 854 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) |
| 855 | return -EFAULT; |
| 856 | return 0; |
| 857 | } /* get_serial_info */ |
| 858 | |
| 859 | |
| 860 | static int set_serial_info(struct usb_serial_port * port, struct serial_struct __user * newinfo) |
| 861 | { /* set_serial_info */ |
| 862 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 863 | struct serial_struct new_serial; |
| 864 | struct ftdi_private old_priv; |
| 865 | |
| 866 | if (copy_from_user(&new_serial, newinfo, sizeof(new_serial))) |
| 867 | return -EFAULT; |
| 868 | old_priv = * priv; |
| 869 | |
| 870 | /* Do error checking and permission checking */ |
| 871 | |
| 872 | if (!capable(CAP_SYS_ADMIN)) { |
| 873 | if (((new_serial.flags & ~ASYNC_USR_MASK) != |
| 874 | (priv->flags & ~ASYNC_USR_MASK))) |
| 875 | return -EPERM; |
| 876 | priv->flags = ((priv->flags & ~ASYNC_USR_MASK) | |
| 877 | (new_serial.flags & ASYNC_USR_MASK)); |
| 878 | priv->custom_divisor = new_serial.custom_divisor; |
| 879 | goto check_and_exit; |
| 880 | } |
| 881 | |
| 882 | if ((new_serial.baud_base != priv->baud_base) && |
| 883 | (new_serial.baud_base < 9600)) |
| 884 | return -EINVAL; |
| 885 | |
| 886 | /* Make the changes - these are privileged changes! */ |
| 887 | |
| 888 | priv->flags = ((priv->flags & ~ASYNC_FLAGS) | |
| 889 | (new_serial.flags & ASYNC_FLAGS)); |
| 890 | priv->custom_divisor = new_serial.custom_divisor; |
| 891 | |
| 892 | port->tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0; |
| 893 | |
| 894 | check_and_exit: |
| 895 | if ((old_priv.flags & ASYNC_SPD_MASK) != |
| 896 | (priv->flags & ASYNC_SPD_MASK)) { |
| 897 | if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
| 898 | port->tty->alt_speed = 57600; |
| 899 | else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
| 900 | port->tty->alt_speed = 115200; |
| 901 | else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
| 902 | port->tty->alt_speed = 230400; |
| 903 | else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
| 904 | port->tty->alt_speed = 460800; |
| 905 | else |
| 906 | port->tty->alt_speed = 0; |
| 907 | } |
| 908 | if (((old_priv.flags & ASYNC_SPD_MASK) != |
| 909 | (priv->flags & ASYNC_SPD_MASK)) || |
| 910 | (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) && |
| 911 | (old_priv.custom_divisor != priv->custom_divisor))) { |
| 912 | change_speed(port); |
| 913 | } |
| 914 | |
| 915 | return (0); |
| 916 | |
| 917 | } /* set_serial_info */ |
| 918 | |
| 919 | |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 920 | /* Determine type of FTDI chip based on USB config and descriptor. */ |
| 921 | static void ftdi_determine_type(struct usb_serial_port *port) |
| 922 | { |
| 923 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 924 | struct usb_serial *serial = port->serial; |
| 925 | struct usb_device *udev = serial->dev; |
| 926 | unsigned version; |
| 927 | unsigned interfaces; |
| 928 | |
| 929 | /* Assume it is not the original SIO device for now. */ |
Ian Abbott | f5e09b7 | 2005-09-12 12:23:25 +0100 | [diff] [blame] | 930 | priv->baud_base = 48000000 / 2; |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 931 | priv->write_offset = 0; |
| 932 | |
| 933 | version = le16_to_cpu(udev->descriptor.bcdDevice); |
| 934 | interfaces = udev->actconfig->desc.bNumInterfaces; |
| 935 | dbg("%s: bcdDevice = 0x%x, bNumInterfaces = %u", __FUNCTION__, |
| 936 | version, interfaces); |
| 937 | if (interfaces > 1) { |
| 938 | int inter; |
| 939 | |
| 940 | /* Multiple interfaces. Assume FT2232C. */ |
| 941 | priv->chip_type = FT2232C; |
| 942 | /* Determine interface code. */ |
| 943 | inter = serial->interface->altsetting->desc.bInterfaceNumber; |
| 944 | if (inter == 0) { |
| 945 | priv->interface = PIT_SIOA; |
| 946 | } else { |
| 947 | priv->interface = PIT_SIOB; |
| 948 | } |
| 949 | /* BM-type devices have a bug where bcdDevice gets set |
| 950 | * to 0x200 when iSerialNumber is 0. */ |
| 951 | if (version < 0x500) { |
| 952 | dbg("%s: something fishy - bcdDevice too low for multi-interface device", |
| 953 | __FUNCTION__); |
| 954 | } |
| 955 | } else if (version < 0x200) { |
| 956 | /* Old device. Assume its the original SIO. */ |
| 957 | priv->chip_type = SIO; |
| 958 | priv->baud_base = 12000000 / 16; |
| 959 | priv->write_offset = 1; |
| 960 | } else if (version < 0x400) { |
| 961 | /* Assume its an FT8U232AM (or FT8U245AM) */ |
| 962 | /* (It might be a BM because of the iSerialNumber bug, |
| 963 | * but it will still work as an AM device.) */ |
| 964 | priv->chip_type = FT8U232AM; |
| 965 | } else { |
| 966 | /* Assume its an FT232BM (or FT245BM) */ |
| 967 | priv->chip_type = FT232BM; |
| 968 | } |
| 969 | info("Detected %s", ftdi_chip_name[priv->chip_type]); |
| 970 | } |
| 971 | |
| 972 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | /* |
| 974 | * *************************************************************************** |
| 975 | * Sysfs Attribute |
| 976 | * *************************************************************************** |
| 977 | */ |
| 978 | |
Yani Ioannou | 060b884 | 2005-05-17 06:44:04 -0400 | [diff] [blame] | 979 | static ssize_t show_latency_timer(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | { |
| 981 | struct usb_serial_port *port = to_usb_serial_port(dev); |
| 982 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 983 | struct usb_device *udev; |
| 984 | unsigned short latency = 0; |
| 985 | int rv = 0; |
| 986 | |
| 987 | udev = to_usb_device(dev); |
| 988 | |
| 989 | dbg("%s",__FUNCTION__); |
| 990 | |
| 991 | rv = usb_control_msg(udev, |
| 992 | usb_rcvctrlpipe(udev, 0), |
| 993 | FTDI_SIO_GET_LATENCY_TIMER_REQUEST, |
| 994 | FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE, |
| 995 | 0, priv->interface, |
| 996 | (char*) &latency, 1, WDR_TIMEOUT); |
| 997 | |
| 998 | if (rv < 0) { |
| 999 | dev_err(dev, "Unable to read latency timer: %i", rv); |
| 1000 | return -EIO; |
| 1001 | } |
| 1002 | return sprintf(buf, "%i\n", latency); |
| 1003 | } |
| 1004 | |
| 1005 | /* Write a new value of the latency timer, in units of milliseconds. */ |
Yani Ioannou | 060b884 | 2005-05-17 06:44:04 -0400 | [diff] [blame] | 1006 | static ssize_t store_latency_timer(struct device *dev, struct device_attribute *attr, const char *valbuf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | size_t count) |
| 1008 | { |
| 1009 | struct usb_serial_port *port = to_usb_serial_port(dev); |
| 1010 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 1011 | struct usb_device *udev; |
| 1012 | char buf[1]; |
| 1013 | int v = simple_strtoul(valbuf, NULL, 10); |
| 1014 | int rv = 0; |
| 1015 | |
| 1016 | udev = to_usb_device(dev); |
| 1017 | |
| 1018 | dbg("%s: setting latency timer = %i", __FUNCTION__, v); |
| 1019 | |
| 1020 | rv = usb_control_msg(udev, |
| 1021 | usb_sndctrlpipe(udev, 0), |
| 1022 | FTDI_SIO_SET_LATENCY_TIMER_REQUEST, |
| 1023 | FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE, |
| 1024 | v, priv->interface, |
| 1025 | buf, 0, WDR_TIMEOUT); |
| 1026 | |
| 1027 | if (rv < 0) { |
| 1028 | dev_err(dev, "Unable to write latency timer: %i", rv); |
| 1029 | return -EIO; |
| 1030 | } |
| 1031 | |
| 1032 | return count; |
| 1033 | } |
| 1034 | |
| 1035 | /* Write an event character directly to the FTDI register. The ASCII |
| 1036 | value is in the low 8 bits, with the enable bit in the 9th bit. */ |
Yani Ioannou | 060b884 | 2005-05-17 06:44:04 -0400 | [diff] [blame] | 1037 | static ssize_t store_event_char(struct device *dev, struct device_attribute *attr, const char *valbuf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | size_t count) |
| 1039 | { |
| 1040 | struct usb_serial_port *port = to_usb_serial_port(dev); |
| 1041 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 1042 | struct usb_device *udev; |
| 1043 | char buf[1]; |
| 1044 | int v = simple_strtoul(valbuf, NULL, 10); |
| 1045 | int rv = 0; |
| 1046 | |
| 1047 | udev = to_usb_device(dev); |
| 1048 | |
| 1049 | dbg("%s: setting event char = %i", __FUNCTION__, v); |
| 1050 | |
| 1051 | rv = usb_control_msg(udev, |
| 1052 | usb_sndctrlpipe(udev, 0), |
| 1053 | FTDI_SIO_SET_EVENT_CHAR_REQUEST, |
| 1054 | FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE, |
| 1055 | v, priv->interface, |
| 1056 | buf, 0, WDR_TIMEOUT); |
| 1057 | |
| 1058 | if (rv < 0) { |
| 1059 | dbg("Unable to write event character: %i", rv); |
| 1060 | return -EIO; |
| 1061 | } |
| 1062 | |
| 1063 | return count; |
| 1064 | } |
| 1065 | |
| 1066 | static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer, store_latency_timer); |
| 1067 | static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char); |
| 1068 | |
| 1069 | static void create_sysfs_attrs(struct usb_serial *serial) |
| 1070 | { |
| 1071 | struct ftdi_private *priv; |
| 1072 | struct usb_device *udev; |
| 1073 | |
| 1074 | dbg("%s",__FUNCTION__); |
| 1075 | |
| 1076 | priv = usb_get_serial_port_data(serial->port[0]); |
| 1077 | udev = serial->dev; |
| 1078 | |
| 1079 | /* XXX I've no idea if the original SIO supports the event_char |
| 1080 | * sysfs parameter, so I'm playing it safe. */ |
| 1081 | if (priv->chip_type != SIO) { |
| 1082 | dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]); |
| 1083 | device_create_file(&udev->dev, &dev_attr_event_char); |
| 1084 | if (priv->chip_type == FT232BM || priv->chip_type == FT2232C) { |
| 1085 | device_create_file(&udev->dev, &dev_attr_latency_timer); |
| 1086 | } |
| 1087 | } |
| 1088 | } |
| 1089 | |
| 1090 | static void remove_sysfs_attrs(struct usb_serial *serial) |
| 1091 | { |
| 1092 | struct ftdi_private *priv; |
| 1093 | struct usb_device *udev; |
| 1094 | |
| 1095 | dbg("%s",__FUNCTION__); |
| 1096 | |
| 1097 | priv = usb_get_serial_port_data(serial->port[0]); |
| 1098 | udev = serial->dev; |
| 1099 | |
| 1100 | /* XXX see create_sysfs_attrs */ |
| 1101 | if (priv->chip_type != SIO) { |
| 1102 | device_remove_file(&udev->dev, &dev_attr_event_char); |
| 1103 | if (priv->chip_type == FT232BM || priv->chip_type == FT2232C) { |
| 1104 | device_remove_file(&udev->dev, &dev_attr_latency_timer); |
| 1105 | } |
| 1106 | } |
| 1107 | |
| 1108 | } |
| 1109 | |
| 1110 | /* |
| 1111 | * *************************************************************************** |
| 1112 | * FTDI driver specific functions |
| 1113 | * *************************************************************************** |
| 1114 | */ |
| 1115 | |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 1116 | /* Probe function to check for special devices */ |
| 1117 | static int ftdi_sio_probe (struct usb_serial *serial, const struct usb_device_id *id) |
| 1118 | { |
| 1119 | usb_set_serial_data(serial, (void *)id->driver_info); |
| 1120 | |
| 1121 | return (0); |
| 1122 | } |
| 1123 | |
| 1124 | /* attach subroutine */ |
| 1125 | static int ftdi_sio_attach (struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | { |
| 1127 | struct usb_serial_port *port = serial->port[0]; |
| 1128 | struct ftdi_private *priv; |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 1129 | struct ftdi_sio_quirk *quirk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1130 | |
| 1131 | dbg("%s",__FUNCTION__); |
| 1132 | |
| 1133 | priv = kmalloc(sizeof(struct ftdi_private), GFP_KERNEL); |
| 1134 | if (!priv){ |
| 1135 | err("%s- kmalloc(%Zd) failed.", __FUNCTION__, sizeof(struct ftdi_private)); |
| 1136 | return -ENOMEM; |
| 1137 | } |
| 1138 | memset(priv, 0, sizeof(*priv)); |
| 1139 | |
| 1140 | spin_lock_init(&priv->rx_lock); |
| 1141 | init_waitqueue_head(&priv->delta_msr_wait); |
| 1142 | /* This will push the characters through immediately rather |
| 1143 | than queue a task to deliver them */ |
| 1144 | priv->flags = ASYNC_LOW_LATENCY; |
| 1145 | |
| 1146 | /* Increase the size of read buffers */ |
Jesper Juhl | 1bc3c9e | 2005-04-18 17:39:34 -0700 | [diff] [blame] | 1147 | kfree(port->bulk_in_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | port->bulk_in_buffer = kmalloc (BUFSZ, GFP_KERNEL); |
| 1149 | if (!port->bulk_in_buffer) { |
| 1150 | kfree (priv); |
| 1151 | return -ENOMEM; |
| 1152 | } |
| 1153 | if (port->read_urb) { |
| 1154 | port->read_urb->transfer_buffer = port->bulk_in_buffer; |
| 1155 | port->read_urb->transfer_buffer_length = BUFSZ; |
| 1156 | } |
| 1157 | |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 1158 | INIT_WORK(&priv->rx_work, ftdi_process_read, port); |
| 1159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | /* Free port's existing write urb and transfer buffer. */ |
| 1161 | if (port->write_urb) { |
| 1162 | usb_free_urb (port->write_urb); |
| 1163 | port->write_urb = NULL; |
| 1164 | } |
Jesper Juhl | 1bc3c9e | 2005-04-18 17:39:34 -0700 | [diff] [blame] | 1165 | kfree(port->bulk_out_buffer); |
| 1166 | port->bulk_out_buffer = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | |
| 1168 | usb_set_serial_port_data(serial->port[0], priv); |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 1169 | |
| 1170 | ftdi_determine_type (serial->port[0]); |
| 1171 | create_sysfs_attrs(serial); |
| 1172 | |
| 1173 | /* Check for device requiring special set up. */ |
| 1174 | quirk = (struct ftdi_sio_quirk *)usb_get_serial_data(serial); |
| 1175 | if (quirk && quirk->setup) { |
| 1176 | quirk->setup(serial); |
| 1177 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | |
| 1179 | return (0); |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 1180 | } /* ftdi_sio_attach */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1181 | |
| 1182 | |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 1183 | /* Setup for the USB-UIRT device, which requires hardwired |
| 1184 | * baudrate (38400 gets mapped to 312500) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | /* Called from usbserial:serial_probe */ |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 1186 | static void ftdi_USB_UIRT_setup (struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | { |
| 1188 | struct ftdi_private *priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | |
| 1190 | dbg("%s",__FUNCTION__); |
| 1191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | priv = usb_get_serial_port_data(serial->port[0]); |
| 1193 | priv->flags |= ASYNC_SPD_CUST; |
| 1194 | priv->custom_divisor = 77; |
| 1195 | priv->force_baud = B38400; |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 1196 | } /* ftdi_USB_UIRT_setup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 1198 | /* Setup for the HE-TIRA1 device, which requires hardwired |
| 1199 | * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */ |
| 1200 | static void ftdi_HE_TIRA1_setup (struct usb_serial *serial) |
| 1201 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | struct ftdi_private *priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | |
| 1204 | dbg("%s",__FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | |
| 1206 | priv = usb_get_serial_port_data(serial->port[0]); |
| 1207 | priv->flags |= ASYNC_SPD_CUST; |
| 1208 | priv->custom_divisor = 240; |
| 1209 | priv->force_baud = B38400; |
| 1210 | priv->force_rtscts = 1; |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 1211 | } /* ftdi_HE_TIRA1_setup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | |
| 1213 | |
| 1214 | /* ftdi_shutdown is called from usbserial:usb_serial_disconnect |
| 1215 | * it is called when the usb device is disconnected |
| 1216 | * |
| 1217 | * usbserial:usb_serial_disconnect |
| 1218 | * calls __serial_close for each open of the port |
| 1219 | * shutdown is called then (ie ftdi_shutdown) |
| 1220 | */ |
| 1221 | |
| 1222 | |
| 1223 | static void ftdi_shutdown (struct usb_serial *serial) |
| 1224 | { /* ftdi_shutdown */ |
| 1225 | |
| 1226 | struct usb_serial_port *port = serial->port[0]; |
| 1227 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 1228 | |
| 1229 | dbg("%s", __FUNCTION__); |
| 1230 | |
| 1231 | remove_sysfs_attrs(serial); |
| 1232 | |
| 1233 | /* all open ports are closed at this point |
| 1234 | * (by usbserial.c:__serial_close, which calls ftdi_close) |
| 1235 | */ |
| 1236 | |
| 1237 | if (priv) { |
| 1238 | usb_set_serial_port_data(port, NULL); |
| 1239 | kfree(priv); |
| 1240 | } |
| 1241 | } /* ftdi_shutdown */ |
| 1242 | |
| 1243 | |
| 1244 | static int ftdi_open (struct usb_serial_port *port, struct file *filp) |
| 1245 | { /* ftdi_open */ |
| 1246 | struct termios tmp_termios; |
| 1247 | struct usb_device *dev = port->serial->dev; |
| 1248 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 1249 | unsigned long flags; |
| 1250 | |
| 1251 | int result = 0; |
| 1252 | char buf[1]; /* Needed for the usb_control_msg I think */ |
| 1253 | |
| 1254 | dbg("%s", __FUNCTION__); |
| 1255 | |
| 1256 | |
| 1257 | port->tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0; |
| 1258 | |
| 1259 | /* No error checking for this (will get errors later anyway) */ |
| 1260 | /* See ftdi_sio.h for description of what is reset */ |
| 1261 | usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
| 1262 | FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE, |
| 1263 | FTDI_SIO_RESET_SIO, |
| 1264 | priv->interface, buf, 0, WDR_TIMEOUT); |
| 1265 | |
| 1266 | /* Termios defaults are set by usb_serial_init. We don't change |
| 1267 | port->tty->termios - this would loose speed settings, etc. |
| 1268 | This is same behaviour as serial.c/rs_open() - Kuba */ |
| 1269 | |
| 1270 | /* ftdi_set_termios will send usb control messages */ |
| 1271 | ftdi_set_termios(port, &tmp_termios); |
| 1272 | |
| 1273 | /* FIXME: Flow control might be enabled, so it should be checked - |
| 1274 | we have no control of defaults! */ |
| 1275 | /* Turn on RTS and DTR since we are not flow controlling by default */ |
Ian Abbott | 74ede0f | 2005-07-29 12:16:41 -0700 | [diff] [blame] | 1276 | set_mctrl(port, TIOCM_DTR | TIOCM_RTS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1277 | |
| 1278 | /* Not throttled */ |
| 1279 | spin_lock_irqsave(&priv->rx_lock, flags); |
| 1280 | priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED); |
| 1281 | spin_unlock_irqrestore(&priv->rx_lock, flags); |
| 1282 | |
| 1283 | /* Start reading from the device */ |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 1284 | priv->rx_processed = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | usb_fill_bulk_urb(port->read_urb, dev, |
| 1286 | usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress), |
| 1287 | port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length, |
| 1288 | ftdi_read_bulk_callback, port); |
| 1289 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); |
| 1290 | if (result) |
| 1291 | err("%s - failed submitting read urb, error %d", __FUNCTION__, result); |
| 1292 | |
| 1293 | |
| 1294 | return result; |
| 1295 | } /* ftdi_open */ |
| 1296 | |
| 1297 | |
| 1298 | |
| 1299 | /* |
| 1300 | * usbserial:__serial_close only calls ftdi_close if the point is open |
| 1301 | * |
| 1302 | * This only gets called when it is the last close |
| 1303 | * |
| 1304 | * |
| 1305 | */ |
| 1306 | |
| 1307 | static void ftdi_close (struct usb_serial_port *port, struct file *filp) |
| 1308 | { /* ftdi_close */ |
| 1309 | unsigned int c_cflag = port->tty->termios->c_cflag; |
| 1310 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 1311 | char buf[1]; |
| 1312 | |
| 1313 | dbg("%s", __FUNCTION__); |
| 1314 | |
| 1315 | if (c_cflag & HUPCL){ |
| 1316 | /* Disable flow control */ |
| 1317 | if (usb_control_msg(port->serial->dev, |
| 1318 | usb_sndctrlpipe(port->serial->dev, 0), |
| 1319 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, |
| 1320 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, |
| 1321 | 0, priv->interface, buf, 0, |
| 1322 | WDR_TIMEOUT) < 0) { |
| 1323 | err("error from flowcontrol urb"); |
| 1324 | } |
| 1325 | |
Ian Abbott | 74ede0f | 2005-07-29 12:16:41 -0700 | [diff] [blame] | 1326 | /* drop RTS and DTR */ |
| 1327 | clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1328 | } /* Note change no line if hupcl is off */ |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 1329 | |
| 1330 | /* cancel any scheduled reading */ |
| 1331 | cancel_delayed_work(&priv->rx_work); |
| 1332 | flush_scheduled_work(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | |
| 1334 | /* shutdown our bulk read */ |
| 1335 | if (port->read_urb) |
| 1336 | usb_kill_urb(port->read_urb); |
| 1337 | } /* ftdi_close */ |
| 1338 | |
| 1339 | |
| 1340 | |
| 1341 | /* The SIO requires the first byte to have: |
| 1342 | * B0 1 |
| 1343 | * B1 0 |
| 1344 | * B2..7 length of message excluding byte 0 |
| 1345 | * |
| 1346 | * The new devices do not require this byte |
| 1347 | */ |
| 1348 | static int ftdi_write (struct usb_serial_port *port, |
| 1349 | const unsigned char *buf, int count) |
| 1350 | { /* ftdi_write */ |
| 1351 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 1352 | struct urb *urb; |
| 1353 | unsigned char *buffer; |
| 1354 | int data_offset ; /* will be 1 for the SIO and 0 otherwise */ |
| 1355 | int status; |
| 1356 | int transfer_size; |
| 1357 | |
| 1358 | dbg("%s port %d, %d bytes", __FUNCTION__, port->number, count); |
| 1359 | |
| 1360 | if (count == 0) { |
| 1361 | dbg("write request of 0 bytes"); |
| 1362 | return 0; |
| 1363 | } |
| 1364 | |
| 1365 | data_offset = priv->write_offset; |
| 1366 | dbg("data_offset set to %d",data_offset); |
| 1367 | |
| 1368 | /* Determine total transfer size */ |
| 1369 | transfer_size = count; |
| 1370 | if (data_offset > 0) { |
| 1371 | /* Original sio needs control bytes too... */ |
| 1372 | transfer_size += (data_offset * |
| 1373 | ((count + (PKTSZ - 1 - data_offset)) / |
| 1374 | (PKTSZ - data_offset))); |
| 1375 | } |
| 1376 | |
| 1377 | buffer = kmalloc (transfer_size, GFP_ATOMIC); |
| 1378 | if (!buffer) { |
| 1379 | err("%s ran out of kernel memory for urb ...", __FUNCTION__); |
| 1380 | return -ENOMEM; |
| 1381 | } |
| 1382 | |
| 1383 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
| 1384 | if (!urb) { |
| 1385 | err("%s - no more free urbs", __FUNCTION__); |
| 1386 | kfree (buffer); |
| 1387 | return -ENOMEM; |
| 1388 | } |
| 1389 | |
| 1390 | /* Copy data */ |
| 1391 | if (data_offset > 0) { |
| 1392 | /* Original sio requires control byte at start of each packet. */ |
| 1393 | int user_pktsz = PKTSZ - data_offset; |
| 1394 | int todo = count; |
| 1395 | unsigned char *first_byte = buffer; |
| 1396 | const unsigned char *current_position = buf; |
| 1397 | |
| 1398 | while (todo > 0) { |
| 1399 | if (user_pktsz > todo) { |
| 1400 | user_pktsz = todo; |
| 1401 | } |
| 1402 | /* Write the control byte at the front of the packet*/ |
| 1403 | *first_byte = 1 | ((user_pktsz) << 2); |
| 1404 | /* Copy data for packet */ |
| 1405 | memcpy (first_byte + data_offset, |
| 1406 | current_position, user_pktsz); |
| 1407 | first_byte += user_pktsz + data_offset; |
| 1408 | current_position += user_pktsz; |
| 1409 | todo -= user_pktsz; |
| 1410 | } |
| 1411 | } else { |
| 1412 | /* No control byte required. */ |
| 1413 | /* Copy in the data to send */ |
| 1414 | memcpy (buffer, buf, count); |
| 1415 | } |
| 1416 | |
| 1417 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, transfer_size, buffer); |
| 1418 | |
| 1419 | /* fill the buffer and send it */ |
| 1420 | usb_fill_bulk_urb(urb, port->serial->dev, |
| 1421 | usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), |
| 1422 | buffer, transfer_size, |
| 1423 | ftdi_write_bulk_callback, port); |
| 1424 | |
| 1425 | status = usb_submit_urb(urb, GFP_ATOMIC); |
| 1426 | if (status) { |
| 1427 | err("%s - failed submitting write urb, error %d", __FUNCTION__, status); |
| 1428 | count = status; |
| 1429 | kfree (buffer); |
| 1430 | } |
| 1431 | |
| 1432 | /* we are done with this urb, so let the host driver |
| 1433 | * really free it when it is finished with it */ |
| 1434 | usb_free_urb (urb); |
| 1435 | |
| 1436 | dbg("%s write returning: %d", __FUNCTION__, count); |
| 1437 | return count; |
| 1438 | } /* ftdi_write */ |
| 1439 | |
| 1440 | |
| 1441 | /* This function may get called when the device is closed */ |
| 1442 | |
| 1443 | static void ftdi_write_bulk_callback (struct urb *urb, struct pt_regs *regs) |
| 1444 | { |
| 1445 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; |
| 1446 | |
| 1447 | /* free up the transfer buffer, as usb_free_urb() does not do this */ |
| 1448 | kfree (urb->transfer_buffer); |
| 1449 | |
| 1450 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 1451 | |
| 1452 | if (urb->status) { |
| 1453 | dbg("nonzero write bulk status received: %d", urb->status); |
| 1454 | return; |
| 1455 | } |
| 1456 | |
| 1457 | schedule_work(&port->work); |
| 1458 | } /* ftdi_write_bulk_callback */ |
| 1459 | |
| 1460 | |
| 1461 | static int ftdi_write_room( struct usb_serial_port *port ) |
| 1462 | { |
| 1463 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 1464 | |
| 1465 | /* |
| 1466 | * We really can take anything the user throws at us |
| 1467 | * but let's pick a nice big number to tell the tty |
| 1468 | * layer that we have lots of free space |
| 1469 | */ |
| 1470 | return 2048; |
| 1471 | } /* ftdi_write_room */ |
| 1472 | |
| 1473 | |
| 1474 | static int ftdi_chars_in_buffer (struct usb_serial_port *port) |
| 1475 | { /* ftdi_chars_in_buffer */ |
| 1476 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 1477 | |
| 1478 | /* |
| 1479 | * We can't really account for how much data we |
| 1480 | * have sent out, but hasn't made it through to the |
| 1481 | * device, so just tell the tty layer that everything |
| 1482 | * is flushed. |
| 1483 | */ |
| 1484 | return 0; |
| 1485 | } /* ftdi_chars_in_buffer */ |
| 1486 | |
| 1487 | |
| 1488 | |
| 1489 | static void ftdi_read_bulk_callback (struct urb *urb, struct pt_regs *regs) |
| 1490 | { /* ftdi_read_bulk_callback */ |
| 1491 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; |
| 1492 | struct tty_struct *tty; |
| 1493 | struct ftdi_private *priv; |
| 1494 | |
| 1495 | if (urb->number_of_packets > 0) { |
| 1496 | err("%s transfer_buffer_length %d actual_length %d number of packets %d",__FUNCTION__, |
| 1497 | urb->transfer_buffer_length, urb->actual_length, urb->number_of_packets ); |
| 1498 | err("%s transfer_flags %x ", __FUNCTION__,urb->transfer_flags ); |
| 1499 | } |
| 1500 | |
| 1501 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 1502 | |
| 1503 | if (port->open_count <= 0) |
| 1504 | return; |
| 1505 | |
| 1506 | tty = port->tty; |
| 1507 | if (!tty) { |
| 1508 | dbg("%s - bad tty pointer - exiting",__FUNCTION__); |
| 1509 | return; |
| 1510 | } |
| 1511 | |
| 1512 | priv = usb_get_serial_port_data(port); |
| 1513 | if (!priv) { |
| 1514 | dbg("%s - bad port private data pointer - exiting", __FUNCTION__); |
| 1515 | return; |
| 1516 | } |
| 1517 | |
| 1518 | if (urb != port->read_urb) { |
| 1519 | err("%s - Not my urb!", __FUNCTION__); |
| 1520 | } |
| 1521 | |
| 1522 | if (urb->status) { |
| 1523 | /* This will happen at close every time so it is a dbg not an err */ |
| 1524 | dbg("(this is ok on close) nonzero read bulk status received: %d", urb->status); |
| 1525 | return; |
| 1526 | } |
| 1527 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1528 | ftdi_process_read(port); |
| 1529 | |
| 1530 | } /* ftdi_read_bulk_callback */ |
| 1531 | |
| 1532 | |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 1533 | static void ftdi_process_read (void *param) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | { /* ftdi_process_read */ |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 1535 | struct usb_serial_port *port = (struct usb_serial_port*)param; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | struct urb *urb; |
| 1537 | struct tty_struct *tty; |
| 1538 | struct ftdi_private *priv; |
| 1539 | char error_flag; |
| 1540 | unsigned char *data; |
| 1541 | |
| 1542 | int i; |
| 1543 | int result; |
| 1544 | int need_flip; |
| 1545 | int packet_offset; |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 1546 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1547 | |
| 1548 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 1549 | |
| 1550 | if (port->open_count <= 0) |
| 1551 | return; |
| 1552 | |
| 1553 | tty = port->tty; |
| 1554 | if (!tty) { |
| 1555 | dbg("%s - bad tty pointer - exiting",__FUNCTION__); |
| 1556 | return; |
| 1557 | } |
| 1558 | |
| 1559 | priv = usb_get_serial_port_data(port); |
| 1560 | if (!priv) { |
| 1561 | dbg("%s - bad port private data pointer - exiting", __FUNCTION__); |
| 1562 | return; |
| 1563 | } |
| 1564 | |
| 1565 | urb = port->read_urb; |
| 1566 | if (!urb) { |
| 1567 | dbg("%s - bad read_urb pointer - exiting", __FUNCTION__); |
| 1568 | return; |
| 1569 | } |
| 1570 | |
| 1571 | data = urb->transfer_buffer; |
| 1572 | |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 1573 | if (priv->rx_processed) { |
| 1574 | dbg("%s - already processed: %d bytes, %d remain", __FUNCTION__, |
| 1575 | priv->rx_processed, |
| 1576 | urb->actual_length - priv->rx_processed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | } else { |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 1578 | /* The first two bytes of every read packet are status */ |
| 1579 | if (urb->actual_length > 2) { |
| 1580 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data); |
| 1581 | } else { |
| 1582 | dbg("Status only: %03oo %03oo",data[0],data[1]); |
| 1583 | } |
| 1584 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | |
| 1586 | |
| 1587 | /* TO DO -- check for hung up line and handle appropriately: */ |
| 1588 | /* send hangup */ |
| 1589 | /* See acm.c - you do a tty_hangup - eg tty_hangup(tty) */ |
| 1590 | /* if CD is dropped and the line is not CLOCAL then we should hangup */ |
| 1591 | |
| 1592 | need_flip = 0; |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 1593 | for (packet_offset = priv->rx_processed; packet_offset < urb->actual_length; packet_offset += PKTSZ) { |
| 1594 | int length; |
| 1595 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1596 | /* Compare new line status to the old one, signal if different */ |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 1597 | /* N.B. packet may be processed more than once, but differences |
| 1598 | * are only processed once. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | if (priv != NULL) { |
| 1600 | char new_status = data[packet_offset+0] & FTDI_STATUS_B0_MASK; |
| 1601 | if (new_status != priv->prev_status) { |
| 1602 | priv->diff_status |= new_status ^ priv->prev_status; |
| 1603 | wake_up_interruptible(&priv->delta_msr_wait); |
| 1604 | priv->prev_status = new_status; |
| 1605 | } |
| 1606 | } |
| 1607 | |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 1608 | length = min(PKTSZ, urb->actual_length-packet_offset)-2; |
| 1609 | if (length < 0) { |
| 1610 | err("%s - bad packet length: %d", __FUNCTION__, length+2); |
| 1611 | length = 0; |
| 1612 | } |
| 1613 | |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 1614 | if (priv->rx_flags & THROTTLED) { |
| 1615 | dbg("%s - throttled", __FUNCTION__); |
| 1616 | break; |
| 1617 | } |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 1618 | if (tty_buffer_request_room(tty, length) < length) { |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 1619 | /* break out & wait for throttling/unthrottling to happen */ |
| 1620 | dbg("%s - receive room low", __FUNCTION__); |
| 1621 | break; |
| 1622 | } |
| 1623 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1624 | /* Handle errors and break */ |
| 1625 | error_flag = TTY_NORMAL; |
| 1626 | /* Although the device uses a bitmask and hence can have multiple */ |
| 1627 | /* errors on a packet - the order here sets the priority the */ |
| 1628 | /* error is returned to the tty layer */ |
| 1629 | |
| 1630 | if ( data[packet_offset+1] & FTDI_RS_OE ) { |
| 1631 | error_flag = TTY_OVERRUN; |
| 1632 | dbg("OVERRRUN error"); |
| 1633 | } |
| 1634 | if ( data[packet_offset+1] & FTDI_RS_BI ) { |
| 1635 | error_flag = TTY_BREAK; |
| 1636 | dbg("BREAK received"); |
| 1637 | } |
| 1638 | if ( data[packet_offset+1] & FTDI_RS_PE ) { |
| 1639 | error_flag = TTY_PARITY; |
| 1640 | dbg("PARITY error"); |
| 1641 | } |
| 1642 | if ( data[packet_offset+1] & FTDI_RS_FE ) { |
| 1643 | error_flag = TTY_FRAME; |
| 1644 | dbg("FRAMING error"); |
| 1645 | } |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 1646 | if (length > 0) { |
| 1647 | for (i = 2; i < length+2; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1648 | /* Note that the error flag is duplicated for |
| 1649 | every character received since we don't know |
| 1650 | which character it applied to */ |
| 1651 | tty_insert_flip_char(tty, data[packet_offset+i], error_flag); |
| 1652 | } |
| 1653 | need_flip = 1; |
| 1654 | } |
| 1655 | |
| 1656 | #ifdef NOT_CORRECT_BUT_KEEPING_IT_FOR_NOW |
| 1657 | /* if a parity error is detected you get status packets forever |
| 1658 | until a character is sent without a parity error. |
| 1659 | This doesn't work well since the application receives a never |
| 1660 | ending stream of bad data - even though new data hasn't been sent. |
| 1661 | Therefore I (bill) have taken this out. |
| 1662 | However - this might make sense for framing errors and so on |
| 1663 | so I am leaving the code in for now. |
| 1664 | */ |
| 1665 | else { |
| 1666 | if (error_flag != TTY_NORMAL){ |
| 1667 | dbg("error_flag is not normal"); |
| 1668 | /* In this case it is just status - if that is an error send a bad character */ |
| 1669 | if(tty->flip.count >= TTY_FLIPBUF_SIZE) { |
| 1670 | tty_flip_buffer_push(tty); |
| 1671 | } |
| 1672 | tty_insert_flip_char(tty, 0xff, error_flag); |
| 1673 | need_flip = 1; |
| 1674 | } |
| 1675 | } |
| 1676 | #endif |
| 1677 | } /* "for(packet_offset=0..." */ |
| 1678 | |
| 1679 | /* Low latency */ |
| 1680 | if (need_flip) { |
| 1681 | tty_flip_buffer_push(tty); |
| 1682 | } |
| 1683 | |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 1684 | if (packet_offset < urb->actual_length) { |
| 1685 | /* not completely processed - record progress */ |
| 1686 | priv->rx_processed = packet_offset; |
| 1687 | dbg("%s - incomplete, %d bytes processed, %d remain", |
| 1688 | __FUNCTION__, packet_offset, |
| 1689 | urb->actual_length - packet_offset); |
| 1690 | /* check if we were throttled while processing */ |
| 1691 | spin_lock_irqsave(&priv->rx_lock, flags); |
| 1692 | if (priv->rx_flags & THROTTLED) { |
| 1693 | priv->rx_flags |= ACTUALLY_THROTTLED; |
| 1694 | spin_unlock_irqrestore(&priv->rx_lock, flags); |
| 1695 | dbg("%s - deferring remainder until unthrottled", |
| 1696 | __FUNCTION__); |
| 1697 | return; |
| 1698 | } |
| 1699 | spin_unlock_irqrestore(&priv->rx_lock, flags); |
| 1700 | /* if the port is closed stop trying to read */ |
| 1701 | if (port->open_count > 0){ |
| 1702 | /* delay processing of remainder */ |
| 1703 | schedule_delayed_work(&priv->rx_work, 1); |
| 1704 | } else { |
| 1705 | dbg("%s - port is closed", __FUNCTION__); |
| 1706 | } |
| 1707 | return; |
| 1708 | } |
| 1709 | |
| 1710 | /* urb is completely processed */ |
| 1711 | priv->rx_processed = 0; |
| 1712 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1713 | /* if the port is closed stop trying to read */ |
| 1714 | if (port->open_count > 0){ |
| 1715 | /* Continue trying to always read */ |
| 1716 | usb_fill_bulk_urb(port->read_urb, port->serial->dev, |
| 1717 | usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress), |
| 1718 | port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length, |
| 1719 | ftdi_read_bulk_callback, port); |
| 1720 | |
| 1721 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
| 1722 | if (result) |
| 1723 | err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); |
| 1724 | } |
| 1725 | |
| 1726 | return; |
| 1727 | } /* ftdi_process_read */ |
| 1728 | |
| 1729 | |
| 1730 | static void ftdi_break_ctl( struct usb_serial_port *port, int break_state ) |
| 1731 | { |
| 1732 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 1733 | __u16 urb_value = 0; |
| 1734 | char buf[1]; |
| 1735 | |
| 1736 | /* break_state = -1 to turn on break, and 0 to turn off break */ |
| 1737 | /* see drivers/char/tty_io.c to see it used */ |
| 1738 | /* last_set_data_urb_value NEVER has the break bit set in it */ |
| 1739 | |
| 1740 | if (break_state) { |
| 1741 | urb_value = priv->last_set_data_urb_value | FTDI_SIO_SET_BREAK; |
| 1742 | } else { |
| 1743 | urb_value = priv->last_set_data_urb_value; |
| 1744 | } |
| 1745 | |
| 1746 | |
| 1747 | if (usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0), |
| 1748 | FTDI_SIO_SET_DATA_REQUEST, |
| 1749 | FTDI_SIO_SET_DATA_REQUEST_TYPE, |
| 1750 | urb_value , priv->interface, |
| 1751 | buf, 0, WDR_TIMEOUT) < 0) { |
| 1752 | err("%s FAILED to enable/disable break state (state was %d)", __FUNCTION__,break_state); |
| 1753 | } |
| 1754 | |
| 1755 | dbg("%s break state is %d - urb is %d", __FUNCTION__,break_state, urb_value); |
| 1756 | |
| 1757 | } |
| 1758 | |
| 1759 | |
| 1760 | /* old_termios contains the original termios settings and tty->termios contains |
| 1761 | * the new setting to be used |
| 1762 | * WARNING: set_termios calls this with old_termios in kernel space |
| 1763 | */ |
| 1764 | |
| 1765 | static void ftdi_set_termios (struct usb_serial_port *port, struct termios *old_termios) |
| 1766 | { /* ftdi_termios */ |
| 1767 | struct usb_device *dev = port->serial->dev; |
| 1768 | unsigned int cflag = port->tty->termios->c_cflag; |
| 1769 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 1770 | __u16 urb_value; /* will hold the new flags */ |
| 1771 | char buf[1]; /* Perhaps I should dynamically alloc this? */ |
| 1772 | |
| 1773 | // Added for xon/xoff support |
| 1774 | unsigned int iflag = port->tty->termios->c_iflag; |
| 1775 | unsigned char vstop; |
| 1776 | unsigned char vstart; |
| 1777 | |
| 1778 | dbg("%s", __FUNCTION__); |
| 1779 | |
| 1780 | /* Force baud rate if this device requires it, unless it is set to B0. */ |
| 1781 | if (priv->force_baud && ((port->tty->termios->c_cflag & CBAUD) != B0)) { |
| 1782 | dbg("%s: forcing baud rate for this device", __FUNCTION__); |
| 1783 | port->tty->termios->c_cflag &= ~CBAUD; |
| 1784 | port->tty->termios->c_cflag |= priv->force_baud; |
| 1785 | } |
| 1786 | |
| 1787 | /* Force RTS-CTS if this device requires it. */ |
| 1788 | if (priv->force_rtscts) { |
| 1789 | dbg("%s: forcing rtscts for this device", __FUNCTION__); |
| 1790 | port->tty->termios->c_cflag |= CRTSCTS; |
| 1791 | } |
| 1792 | |
| 1793 | cflag = port->tty->termios->c_cflag; |
| 1794 | |
| 1795 | /* FIXME -For this cut I don't care if the line is really changing or |
| 1796 | not - so just do the change regardless - should be able to |
| 1797 | compare old_termios and tty->termios */ |
| 1798 | /* NOTE These routines can get interrupted by |
| 1799 | ftdi_sio_read_bulk_callback - need to examine what this |
| 1800 | means - don't see any problems yet */ |
| 1801 | |
| 1802 | /* Set number of data bits, parity, stop bits */ |
| 1803 | |
| 1804 | urb_value = 0; |
| 1805 | urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 : |
| 1806 | FTDI_SIO_SET_DATA_STOP_BITS_1); |
| 1807 | urb_value |= (cflag & PARENB ? |
| 1808 | (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD : |
| 1809 | FTDI_SIO_SET_DATA_PARITY_EVEN) : |
| 1810 | FTDI_SIO_SET_DATA_PARITY_NONE); |
| 1811 | if (cflag & CSIZE) { |
| 1812 | switch (cflag & CSIZE) { |
| 1813 | case CS5: urb_value |= 5; dbg("Setting CS5"); break; |
| 1814 | case CS6: urb_value |= 6; dbg("Setting CS6"); break; |
| 1815 | case CS7: urb_value |= 7; dbg("Setting CS7"); break; |
| 1816 | case CS8: urb_value |= 8; dbg("Setting CS8"); break; |
| 1817 | default: |
| 1818 | err("CSIZE was set but not CS5-CS8"); |
| 1819 | } |
| 1820 | } |
| 1821 | |
| 1822 | /* This is needed by the break command since it uses the same command - but is |
| 1823 | * or'ed with this value */ |
| 1824 | priv->last_set_data_urb_value = urb_value; |
| 1825 | |
| 1826 | if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
| 1827 | FTDI_SIO_SET_DATA_REQUEST, |
| 1828 | FTDI_SIO_SET_DATA_REQUEST_TYPE, |
| 1829 | urb_value , priv->interface, |
Ian Abbott | 279e154 | 2005-07-29 12:16:52 -0700 | [diff] [blame] | 1830 | buf, 0, WDR_SHORT_TIMEOUT) < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1831 | err("%s FAILED to set databits/stopbits/parity", __FUNCTION__); |
| 1832 | } |
| 1833 | |
| 1834 | /* Now do the baudrate */ |
| 1835 | if ((cflag & CBAUD) == B0 ) { |
| 1836 | /* Disable flow control */ |
| 1837 | if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
| 1838 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, |
| 1839 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, |
| 1840 | 0, priv->interface, |
| 1841 | buf, 0, WDR_TIMEOUT) < 0) { |
| 1842 | err("%s error from disable flowcontrol urb", __FUNCTION__); |
| 1843 | } |
| 1844 | /* Drop RTS and DTR */ |
Ian Abbott | 74ede0f | 2005-07-29 12:16:41 -0700 | [diff] [blame] | 1845 | clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1846 | } else { |
| 1847 | /* set the baudrate determined before */ |
| 1848 | if (change_speed(port)) { |
Peter Favrholdt | 72a755f | 2005-09-22 00:48:49 -0700 | [diff] [blame] | 1849 | err("%s urb failed to set baudrate", __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1850 | } |
Peter Favrholdt | 72a755f | 2005-09-22 00:48:49 -0700 | [diff] [blame] | 1851 | /* Ensure RTS and DTR are raised when baudrate changed from 0 */ |
| 1852 | if ((old_termios->c_cflag & CBAUD) == B0) { |
| 1853 | set_mctrl(port, TIOCM_DTR | TIOCM_RTS); |
| 1854 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | } |
| 1856 | |
| 1857 | /* Set flow control */ |
| 1858 | /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */ |
| 1859 | if (cflag & CRTSCTS) { |
| 1860 | dbg("%s Setting to CRTSCTS flow control", __FUNCTION__); |
| 1861 | if (usb_control_msg(dev, |
| 1862 | usb_sndctrlpipe(dev, 0), |
| 1863 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, |
| 1864 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, |
| 1865 | 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface), |
| 1866 | buf, 0, WDR_TIMEOUT) < 0) { |
| 1867 | err("urb failed to set to rts/cts flow control"); |
| 1868 | } |
| 1869 | |
| 1870 | } else { |
| 1871 | /* |
| 1872 | * Xon/Xoff code |
| 1873 | * |
| 1874 | * Check the IXOFF status in the iflag component of the termios structure |
| 1875 | * if IXOFF is not set, the pre-xon/xoff code is executed. |
| 1876 | */ |
| 1877 | if (iflag & IXOFF) { |
| 1878 | dbg("%s request to enable xonxoff iflag=%04x",__FUNCTION__,iflag); |
| 1879 | // Try to enable the XON/XOFF on the ftdi_sio |
| 1880 | // Set the vstart and vstop -- could have been done up above where |
| 1881 | // a lot of other dereferencing is done but that would be very |
| 1882 | // inefficient as vstart and vstop are not always needed |
| 1883 | vstart=port->tty->termios->c_cc[VSTART]; |
| 1884 | vstop=port->tty->termios->c_cc[VSTOP]; |
| 1885 | urb_value=(vstop << 8) | (vstart); |
| 1886 | |
| 1887 | if (usb_control_msg(dev, |
| 1888 | usb_sndctrlpipe(dev, 0), |
| 1889 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, |
| 1890 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, |
| 1891 | urb_value , (FTDI_SIO_XON_XOFF_HS |
| 1892 | | priv->interface), |
| 1893 | buf, 0, WDR_TIMEOUT) < 0) { |
| 1894 | err("urb failed to set to xon/xoff flow control"); |
| 1895 | } |
| 1896 | } else { |
| 1897 | /* else clause to only run if cfag ! CRTSCTS and iflag ! XOFF */ |
| 1898 | /* CHECKME Assuming XON/XOFF handled by tty stack - not by device */ |
| 1899 | dbg("%s Turning off hardware flow control", __FUNCTION__); |
| 1900 | if (usb_control_msg(dev, |
| 1901 | usb_sndctrlpipe(dev, 0), |
| 1902 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, |
| 1903 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, |
| 1904 | 0, priv->interface, |
| 1905 | buf, 0, WDR_TIMEOUT) < 0) { |
| 1906 | err("urb failed to clear flow control"); |
| 1907 | } |
| 1908 | } |
| 1909 | |
| 1910 | } |
| 1911 | return; |
| 1912 | } /* ftdi_termios */ |
| 1913 | |
| 1914 | |
| 1915 | static int ftdi_tiocmget (struct usb_serial_port *port, struct file *file) |
| 1916 | { |
| 1917 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 1918 | unsigned char buf[2]; |
| 1919 | int ret; |
| 1920 | |
| 1921 | dbg("%s TIOCMGET", __FUNCTION__); |
| 1922 | switch (priv->chip_type) { |
| 1923 | case SIO: |
| 1924 | /* Request the status from the device */ |
| 1925 | if ((ret = usb_control_msg(port->serial->dev, |
| 1926 | usb_rcvctrlpipe(port->serial->dev, 0), |
| 1927 | FTDI_SIO_GET_MODEM_STATUS_REQUEST, |
| 1928 | FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE, |
| 1929 | 0, 0, |
| 1930 | buf, 1, WDR_TIMEOUT)) < 0 ) { |
| 1931 | err("%s Could not get modem status of device - err: %d", __FUNCTION__, |
| 1932 | ret); |
| 1933 | return(ret); |
| 1934 | } |
| 1935 | break; |
| 1936 | case FT8U232AM: |
| 1937 | case FT232BM: |
| 1938 | case FT2232C: |
| 1939 | /* the 8U232AM returns a two byte value (the sio is a 1 byte value) - in the same |
| 1940 | format as the data returned from the in point */ |
| 1941 | if ((ret = usb_control_msg(port->serial->dev, |
| 1942 | usb_rcvctrlpipe(port->serial->dev, 0), |
| 1943 | FTDI_SIO_GET_MODEM_STATUS_REQUEST, |
| 1944 | FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE, |
| 1945 | 0, priv->interface, |
| 1946 | buf, 2, WDR_TIMEOUT)) < 0 ) { |
| 1947 | err("%s Could not get modem status of device - err: %d", __FUNCTION__, |
| 1948 | ret); |
| 1949 | return(ret); |
| 1950 | } |
| 1951 | break; |
| 1952 | default: |
| 1953 | return -EFAULT; |
| 1954 | break; |
| 1955 | } |
| 1956 | |
| 1957 | return (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) | |
| 1958 | (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) | |
| 1959 | (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) | |
| 1960 | (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0) | |
| 1961 | priv->last_dtr_rts; |
| 1962 | } |
| 1963 | |
| 1964 | static int ftdi_tiocmset(struct usb_serial_port *port, struct file * file, unsigned int set, unsigned int clear) |
| 1965 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1966 | dbg("%s TIOCMSET", __FUNCTION__); |
Ian Abbott | 74ede0f | 2005-07-29 12:16:41 -0700 | [diff] [blame] | 1967 | return update_mctrl(port, set, clear); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | } |
| 1969 | |
| 1970 | |
| 1971 | static int ftdi_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) |
| 1972 | { |
| 1973 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 1974 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | dbg("%s cmd 0x%04x", __FUNCTION__, cmd); |
| 1976 | |
| 1977 | /* Based on code from acm.c and others */ |
| 1978 | switch (cmd) { |
| 1979 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1980 | case TIOCGSERIAL: /* gets serial port data */ |
| 1981 | return get_serial_info(port, (struct serial_struct __user *) arg); |
| 1982 | |
| 1983 | case TIOCSSERIAL: /* sets serial port data */ |
| 1984 | return set_serial_info(port, (struct serial_struct __user *) arg); |
| 1985 | |
| 1986 | /* |
| 1987 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change |
| 1988 | * - mask passed in arg for lines of interest |
| 1989 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) |
| 1990 | * Caller should use TIOCGICOUNT to see which one it was. |
| 1991 | * |
| 1992 | * This code is borrowed from linux/drivers/char/serial.c |
| 1993 | */ |
| 1994 | case TIOCMIWAIT: |
| 1995 | while (priv != NULL) { |
| 1996 | interruptible_sleep_on(&priv->delta_msr_wait); |
| 1997 | /* see if a signal did it */ |
| 1998 | if (signal_pending(current)) |
| 1999 | return -ERESTARTSYS; |
| 2000 | else { |
| 2001 | char diff = priv->diff_status; |
| 2002 | |
| 2003 | if (diff == 0) { |
| 2004 | return -EIO; /* no change => error */ |
| 2005 | } |
| 2006 | |
| 2007 | /* Consume all events */ |
| 2008 | priv->diff_status = 0; |
| 2009 | |
| 2010 | /* Return 0 if caller wanted to know about these bits */ |
| 2011 | if ( ((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) || |
| 2012 | ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) || |
| 2013 | ((arg & TIOCM_CD) && (diff & FTDI_RS0_RLSD)) || |
| 2014 | ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS)) ) { |
| 2015 | return 0; |
| 2016 | } |
| 2017 | /* |
| 2018 | * Otherwise caller can't care less about what happened, |
| 2019 | * and so we continue to wait for more events. |
| 2020 | */ |
| 2021 | } |
| 2022 | } |
| 2023 | return(0); |
| 2024 | break; |
| 2025 | default: |
| 2026 | break; |
| 2027 | |
| 2028 | } |
| 2029 | |
| 2030 | |
| 2031 | /* This is not necessarily an error - turns out the higher layers will do |
| 2032 | * some ioctls itself (see comment above) |
| 2033 | */ |
| 2034 | dbg("%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h", __FUNCTION__, cmd); |
| 2035 | |
| 2036 | return(-ENOIOCTLCMD); |
| 2037 | } /* ftdi_ioctl */ |
| 2038 | |
| 2039 | |
| 2040 | static void ftdi_throttle (struct usb_serial_port *port) |
| 2041 | { |
| 2042 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 2043 | unsigned long flags; |
| 2044 | |
| 2045 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 2046 | |
| 2047 | spin_lock_irqsave(&priv->rx_lock, flags); |
| 2048 | priv->rx_flags |= THROTTLED; |
| 2049 | spin_unlock_irqrestore(&priv->rx_lock, flags); |
| 2050 | } |
| 2051 | |
| 2052 | |
| 2053 | static void ftdi_unthrottle (struct usb_serial_port *port) |
| 2054 | { |
| 2055 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
| 2056 | int actually_throttled; |
| 2057 | unsigned long flags; |
| 2058 | |
| 2059 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 2060 | |
| 2061 | spin_lock_irqsave(&priv->rx_lock, flags); |
| 2062 | actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED; |
| 2063 | priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED); |
| 2064 | spin_unlock_irqrestore(&priv->rx_lock, flags); |
| 2065 | |
| 2066 | if (actually_throttled) |
Ian Abbott | 76854ce | 2005-06-02 10:34:11 +0100 | [diff] [blame] | 2067 | schedule_work(&priv->rx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2068 | } |
| 2069 | |
| 2070 | static int __init ftdi_init (void) |
| 2071 | { |
| 2072 | int retval; |
| 2073 | |
| 2074 | dbg("%s", __FUNCTION__); |
Ian Abbott | fdcb0a0 | 2005-07-28 18:40:32 +0100 | [diff] [blame] | 2075 | if (vendor > 0 && product > 0) { |
| 2076 | /* Add user specified VID/PID to reserved element of table. */ |
| 2077 | int i; |
| 2078 | for (i = 0; id_table_combined[i].idVendor; i++) |
| 2079 | ; |
| 2080 | id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; |
| 2081 | id_table_combined[i].idVendor = vendor; |
| 2082 | id_table_combined[i].idProduct = product; |
| 2083 | } |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 2084 | retval = usb_serial_register(&ftdi_sio_device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2085 | if (retval) |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 2086 | goto failed_sio_register; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2087 | retval = usb_register(&ftdi_driver); |
| 2088 | if (retval) |
| 2089 | goto failed_usb_register; |
| 2090 | |
| 2091 | info(DRIVER_VERSION ":" DRIVER_DESC); |
| 2092 | return 0; |
| 2093 | failed_usb_register: |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 2094 | usb_serial_deregister(&ftdi_sio_device); |
| 2095 | failed_sio_register: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2096 | return retval; |
| 2097 | } |
| 2098 | |
| 2099 | |
| 2100 | static void __exit ftdi_exit (void) |
| 2101 | { |
| 2102 | |
| 2103 | dbg("%s", __FUNCTION__); |
| 2104 | |
| 2105 | usb_deregister (&ftdi_driver); |
Ian Abbott | 8f977e4 | 2005-06-20 16:45:42 +0100 | [diff] [blame] | 2106 | usb_serial_deregister (&ftdi_sio_device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2107 | |
| 2108 | } |
| 2109 | |
| 2110 | |
| 2111 | module_init(ftdi_init); |
| 2112 | module_exit(ftdi_exit); |
| 2113 | |
| 2114 | MODULE_AUTHOR( DRIVER_AUTHOR ); |
| 2115 | MODULE_DESCRIPTION( DRIVER_DESC ); |
| 2116 | MODULE_LICENSE("GPL"); |
| 2117 | |
| 2118 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
| 2119 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |
Ian Abbott | fdcb0a0 | 2005-07-28 18:40:32 +0100 | [diff] [blame] | 2120 | module_param(vendor, ushort, 0); |
| 2121 | MODULE_PARM_DESC(vendor, "User specified vendor ID (default=" |
| 2122 | __MODULE_STRING(FTDI_VID)")"); |
| 2123 | module_param(product, ushort, 0); |
| 2124 | MODULE_PARM_DESC(vendor, "User specified product ID"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2125 | |