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USB: storage: fix a resume path GFP_NOIO must be used
[people/arne_f/kernel.git] / drivers / usb / serial / ftdi_sio.c
CommitLineData
1da177e4
LT		 1/*
2 * USB FTDI SIO driver
3 *
5c09d144
DB		 4 * Copyright (C) 1999 - 2001
5 * Greg Kroah-Hartman (greg@kroah.com)
1da177e4
LT		 6 * Bill Ryder (bryder@sgi.com)
7 * Copyright (C) 2002
8 * Kuba Ober (kuba@mareimbrium.org)
9 *
5c09d144
DB		 10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
1da177e4 14 *
464cbb24
AC		 15 * See Documentation/usb/usb-serial.txt for more information on using this
16 * driver
1da177e4
LT		 17 *
18 * See http://ftdi-usb-sio.sourceforge.net for upto date testing info
19 * and extra documentation
20 *
504b55cc
GKH		 21 * Change entries from 2004 and earlier can be found in versions of this
22 * file in kernel versions prior to the 2.6.24 release.
1da177e4
LT		 23 *
24 */
25
26/* Bill Ryder - bryder@sgi.com - wrote the FTDI_SIO implementation */
27/* Thanx to FTDI for so kindly providing details of the protocol required */
28/* to talk to the device */
464cbb24
AC		 29/* Thanx to gkh and the rest of the usb dev group for all code I have
30 assimilated :-) */
1da177e4 31
1da177e4
LT		 32#include <linux/kernel.h>
33#include <linux/errno.h>
34#include <linux/init.h>
35#include <linux/slab.h>
405f5571 36#include <linux/smp_lock.h>
1da177e4
LT		 37#include <linux/tty.h>
38#include <linux/tty_driver.h>
39#include <linux/tty_flip.h>
40#include <linux/module.h>
41#include <linux/spinlock.h>
464cbb24 42#include <linux/uaccess.h>
1da177e4
LT		 43#include <linux/usb.h>
44#include <linux/serial.h>
a969888c 45#include <linux/usb/serial.h>
1da177e4
LT		 46#include "ftdi_sio.h"
47
48/*
49 * Version Information
50 */
094c2e6d 51#define DRIVER_VERSION "v1.5.0"
1da177e4
LT		 52#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober <kuba@mareimbrium.org>"
53#define DRIVER_DESC "USB FTDI Serial Converters Driver"
54
55static int debug;
fdcb0a0f
IA		 56static __u16 vendor = FTDI_VID;
57static __u16 product;
1da177e4 58
0ffbbe25 59struct ftdi_private {
c45d6320 60 struct kref kref;
0ffbbe25 61 ftdi_chip_type_t chip_type;
464cbb24 62 /* type of device, either SIO or FT8U232AM */
0ffbbe25 63 int baud_base; /* baud base clock for divisor setting */
464cbb24
AC		 64 int custom_divisor; /* custom_divisor kludge, this is for
65 baud_base (different from what goes to the
66 chip!) */
0ffbbe25 67 __u16 last_set_data_urb_value ;
464cbb24
AC		 68 /* the last data state set - needed for doing
69 * a break
70 */
71 int write_offset; /* This is the offset in the usb data block to
72 * write the serial data - it varies between
73 * devices
0ffbbe25
ON		 74 */
75 int flags; /* some ASYNC_xxxx flags are supported */
76 unsigned long last_dtr_rts; /* saved modem control outputs */
464cbb24 77 wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
0ffbbe25
ON		 78 char prev_status, diff_status; /* Used for TIOCMIWAIT */
79 __u8 rx_flags; /* receive state flags (throttling) */
80 spinlock_t rx_lock; /* spinlock for receive state */
81 struct delayed_work rx_work;
82 struct usb_serial_port *port;
83 int rx_processed;
84 unsigned long rx_bytes;
85
094c2e6d
MA		 86 __u16 interface; /* FT2232C, FT2232H or FT4232H port interface
87 (0 for FT232/245) */
0ffbbe25 88
464cbb24
AC		 89 speed_t force_baud; /* if non-zero, force the baud rate to
90 this value */
91 int force_rtscts; /* if non-zero, force RTS-CTS to always
92 be enabled */
0ffbbe25 93
557aaa7f 94 unsigned int latency; /* latency setting in use */
0ffbbe25
ON		 95 spinlock_t tx_lock; /* spinlock for transmit state */
96 unsigned long tx_bytes;
97 unsigned long tx_outstanding_bytes;
98 unsigned long tx_outstanding_urbs;
895f28ba 99 unsigned short max_packet_size;
0ffbbe25
ON		 100};
101
8f977e42
IA		 102/* struct ftdi_sio_quirk is used by devices requiring special attention. */
103struct ftdi_sio_quirk {
fa91d43b 104 int (*probe)(struct usb_serial *);
464cbb24
AC		 105 /* Special settings for probed ports. */
106 void (*port_probe)(struct ftdi_private *);
8f977e42
IA		 107};
108
464cbb24
AC		 109static int ftdi_jtag_probe(struct usb_serial *serial);
110static int ftdi_mtxorb_hack_setup(struct usb_serial *serial);
b760dac2 111static int ftdi_NDI_device_setup(struct usb_serial *serial);
464cbb24
AC		 112static void ftdi_USB_UIRT_setup(struct ftdi_private *priv);
113static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv);
8f977e42 114
20734345
HW		 115static struct ftdi_sio_quirk ftdi_jtag_quirk = {
116 .probe = ftdi_jtag_probe,
fa91d43b
TL		 117};
118
546d7eec
KV		 119static struct ftdi_sio_quirk ftdi_mtxorb_hack_quirk = {
120 .probe = ftdi_mtxorb_hack_setup,
121};
122
b760dac2
MG		 123static struct ftdi_sio_quirk ftdi_NDI_device_quirk = {
124 .probe = ftdi_NDI_device_setup,
125};
126
8f977e42 127static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = {
0ffbbe25 128 .port_probe = ftdi_USB_UIRT_setup,
8f977e42
IA		 129};
130
131static struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = {
0ffbbe25 132 .port_probe = ftdi_HE_TIRA1_setup,
1da177e4
LT		 133};
134
135/*
136 * The 8U232AM has the same API as the sio except for:
137 * - it can support MUCH higher baudrates; up to:
138 * o 921600 for RS232 and 2000000 for RS422/485 at 48MHz
139 * o 230400 at 12MHz
140 * so .. 8U232AM's baudrate setting codes are different
141 * - it has a two byte status code.
142 * - it returns characters every 16ms (the FTDI does it every 40ms)
143 *
144 * the bcdDevice value is used to differentiate FT232BM and FT245BM from
145 * the earlier FT8U232AM and FT8U232BM. For now, include all known VID/PID
146 * combinations in both tables.
8f977e42
IA		 147 * FIXME: perhaps bcdDevice can also identify 12MHz FT8U232AM devices,
148 * but I don't know if those ever went into mass production. [Ian Abbott]
1da177e4
LT		 149 */
150
151
1da177e4
LT		 152
153static struct usb_device_id id_table_combined [] = {
2011e924
JD		 154 { USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) },
155 { USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) },
01ba0856 156 { USB_DEVICE(FTDI_VID, FTDI_CANDAPTER_PID) },
6e1ab3ed
PM		 157 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_0_PID) },
158 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_1_PID) },
159 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_2_PID) },
160 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_3_PID) },
161 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_4_PID) },
162 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_5_PID) },
163 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_6_PID) },
164 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_7_PID) },
72a9f958 165 { USB_DEVICE(FTDI_VID, FTDI_ACTZWAVE_PID) },
1da177e4 166 { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) },
69737dfa 167 { USB_DEVICE(FTDI_VID, FTDI_IPLUS_PID) },
d099321b 168 { USB_DEVICE(FTDI_VID, FTDI_IPLUS2_PID) },
fad14a0d 169 { USB_DEVICE(FTDI_VID, FTDI_DMX4ALL) },
1da177e4
LT		 170 { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) },
171 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) },
172 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) },
d8b21606 173 { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) },
1da177e4 174 { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) },
094c2e6d 175 { USB_DEVICE(FTDI_VID, FTDI_4232H_PID) },
c0f8d561 176 { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) },
1da177e4 177 { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) },
2adb80e9 178 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) },
1da177e4
LT		 179 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) },
180 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) },
f2ee6955 181 { USB_DEVICE(FTDI_VID, FTDI_SPROG_II) },
1da177e4
LT		 182 { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) },
183 { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) },
184 { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) },
185 { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) },
186 { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) },
187 { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) },
188 { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) },
189 { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) },
190 { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) },
191 { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) },
192 { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) },
8f977e42
IA		 193 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) },
194 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) },
195 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) },
196 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) },
197 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) },
198 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) },
199 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) },
b34efeea 200 { USB_DEVICE(FTDI_VID, FTDI_R2000KU_TRUE_RNG) },
464cbb24
AC		 201 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0100_PID) },
202 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0101_PID) },
203 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0102_PID) },
204 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0103_PID) },
205 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0104_PID) },
206 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0105_PID) },
207 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0106_PID) },
208 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0107_PID) },
209 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0108_PID) },
210 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0109_PID) },
211 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010A_PID) },
212 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010B_PID) },
213 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010C_PID) },
214 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010D_PID) },
215 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010E_PID) },
216 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010F_PID) },
217 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0110_PID) },
218 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0111_PID) },
219 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0112_PID) },
220 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0113_PID) },
221 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0114_PID) },
222 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0115_PID) },
223 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0116_PID) },
224 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0117_PID) },
225 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0118_PID) },
226 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0119_PID) },
227 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011A_PID) },
228 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011B_PID) },
229 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011C_PID) },
230 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011D_PID) },
231 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011E_PID) },
232 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011F_PID) },
233 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0120_PID) },
234 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0121_PID) },
235 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0122_PID) },
236 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0123_PID) },
237 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0124_PID) },
238 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0125_PID) },
239 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0126_PID) },
240 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0127_PID),
546d7eec 241 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
464cbb24
AC		 242 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0128_PID) },
243 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0129_PID) },
244 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012A_PID) },
245 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012B_PID) },
246 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012C_PID),
ebb3770c 247 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
464cbb24
AC		 248 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012D_PID) },
249 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012E_PID) },
250 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012F_PID) },
251 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0130_PID) },
252 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0131_PID) },
253 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0132_PID) },
254 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0133_PID) },
255 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0134_PID) },
256 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0135_PID) },
257 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0136_PID) },
258 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0137_PID) },
259 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0138_PID) },
260 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0139_PID) },
261 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013A_PID) },
262 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013B_PID) },
263 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013C_PID) },
264 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013D_PID) },
265 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013E_PID) },
266 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013F_PID) },
267 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0140_PID) },
268 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0141_PID) },
269 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0142_PID) },
270 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0143_PID) },
271 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0144_PID) },
272 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0145_PID) },
273 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0146_PID) },
274 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0147_PID) },
275 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0148_PID) },
276 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0149_PID) },
277 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014A_PID) },
278 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014B_PID) },
279 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014C_PID) },
280 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014D_PID) },
281 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014E_PID) },
282 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014F_PID) },
283 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0150_PID) },
284 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0151_PID) },
285 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0152_PID) },
286 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0153_PID),
ebb3770c 287 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
464cbb24 288 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0154_PID),
ebb3770c 289 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
464cbb24 290 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0155_PID),
ebb3770c 291 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
464cbb24 292 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0156_PID),
ebb3770c 293 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
464cbb24 294 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0157_PID),
ebb3770c 295 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
464cbb24 296 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0158_PID),
ebb3770c 297 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
464cbb24
AC		 298 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0159_PID) },
299 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015A_PID) },
300 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015B_PID) },
301 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015C_PID) },
302 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015D_PID) },
303 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015E_PID) },
304 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015F_PID) },
305 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0160_PID) },
306 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0161_PID) },
307 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0162_PID) },
308 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0163_PID) },
309 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0164_PID) },
310 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0165_PID) },
311 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0166_PID) },
312 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0167_PID) },
313 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0168_PID) },
314 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0169_PID) },
315 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016A_PID) },
316 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016B_PID) },
317 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016C_PID) },
318 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016D_PID) },
319 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016E_PID) },
320 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016F_PID) },
321 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0170_PID) },
322 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0171_PID) },
323 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0172_PID) },
324 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0173_PID) },
325 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0174_PID) },
326 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0175_PID) },
327 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0176_PID) },
328 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0177_PID) },
329 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0178_PID) },
330 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0179_PID) },
331 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017A_PID) },
332 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017B_PID) },
333 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017C_PID) },
334 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017D_PID) },
335 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017E_PID) },
336 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017F_PID) },
337 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0180_PID) },
338 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0181_PID) },
339 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0182_PID) },
340 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0183_PID) },
341 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0184_PID) },
342 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0185_PID) },
343 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0186_PID) },
344 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0187_PID) },
345 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0188_PID) },
346 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0189_PID) },
347 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018A_PID) },
348 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018B_PID) },
349 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018C_PID) },
350 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018D_PID) },
351 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018E_PID) },
352 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018F_PID) },
353 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0190_PID) },
354 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0191_PID) },
355 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0192_PID) },
356 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0193_PID) },
357 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0194_PID) },
358 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0195_PID) },
359 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0196_PID) },
360 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0197_PID) },
361 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0198_PID) },
362 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0199_PID) },
363 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019A_PID) },
364 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019B_PID) },
365 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019C_PID) },
366 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019D_PID) },
367 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019E_PID) },
368 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019F_PID) },
369 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A0_PID) },
370 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A1_PID) },
371 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A2_PID) },
372 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A3_PID) },
373 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A4_PID) },
374 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A5_PID) },
375 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A6_PID) },
376 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A7_PID) },
377 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A8_PID) },
378 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A9_PID) },
379 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AA_PID) },
380 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AB_PID) },
381 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AC_PID) },
382 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AD_PID) },
383 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AE_PID) },
384 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AF_PID) },
385 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B0_PID) },
386 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B1_PID) },
387 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B2_PID) },
388 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B3_PID) },
389 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B4_PID) },
390 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B5_PID) },
391 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B6_PID) },
392 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B7_PID) },
393 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B8_PID) },
394 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B9_PID) },
395 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BA_PID) },
396 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BB_PID) },
397 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BC_PID) },
398 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BD_PID) },
399 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BE_PID) },
400 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BF_PID) },
401 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C0_PID) },
402 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C1_PID) },
403 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C2_PID) },
404 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C3_PID) },
405 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C4_PID) },
406 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C5_PID) },
407 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C6_PID) },
408 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C7_PID) },
409 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C8_PID) },
410 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C9_PID) },
411 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CA_PID) },
412 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CB_PID) },
413 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CC_PID) },
414 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CD_PID) },
415 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CE_PID) },
416 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CF_PID) },
417 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D0_PID) },
418 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D1_PID) },
419 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D2_PID) },
420 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D3_PID) },
421 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D4_PID) },
422 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D5_PID) },
423 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D6_PID) },
424 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D7_PID) },
425 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D8_PID) },
426 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D9_PID) },
427 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DA_PID) },
428 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DB_PID) },
429 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DC_PID) },
430 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DD_PID) },
431 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DE_PID) },
432 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DF_PID) },
433 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E0_PID) },
434 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E1_PID) },
435 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E2_PID) },
436 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E3_PID) },
437 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E4_PID) },
438 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E5_PID) },
439 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E6_PID) },
440 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E7_PID) },
441 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E8_PID) },
442 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E9_PID) },
443 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EA_PID) },
444 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EB_PID) },
445 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EC_PID) },
446 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01ED_PID) },
447 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EE_PID) },
448 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EF_PID) },
449 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F0_PID) },
450 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F1_PID) },
451 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F2_PID) },
452 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F3_PID) },
453 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F4_PID) },
454 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F5_PID) },
455 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F6_PID) },
456 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F7_PID) },
457 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F8_PID) },
458 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F9_PID) },
459 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FA_PID) },
460 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FB_PID) },
461 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FC_PID) },
462 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FD_PID) },
463 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FE_PID) },
464 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FF_PID) },
8f977e42 465 { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) },
1da177e4 466 { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) },
274a4bbc 467 { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) },
868e440d 468 { USB_DEVICE(FTDI_VID, FTDI_USBX_707_PID) },
1da177e4
LT		 469 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) },
470 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) },
471 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) },
472 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) },
a1484827 473 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2106_PID) },
1da177e4
LT		 474 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) },
475 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) },
476 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) },
477 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) },
478 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) },
479 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) },
480 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) },
481 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) },
482 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) },
483 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) },
484 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) },
485 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) },
486 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) },
487 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) },
488 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) },
489 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) },
490 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) },
491 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) },
492 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) },
493 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) },
494 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) },
495 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) },
496 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) },
497 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) },
498 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) },
499 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) },
500 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) },
501 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) },
502 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) },
503 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) },
504 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) },
505 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) },
506 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) },
507 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) },
508 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) },
509 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) },
510 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) },
511 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) },
512 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) },
513 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) },
514 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) },
515 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) },
516 { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) },
517 { USB_DEVICE(OCT_VID, OCT_US101_PID) },
8f977e42
IA		 518 { USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID),
519 .driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk },
520 { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID),
521 .driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk },
1da177e4
LT		 522 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) },
523 { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) },
524 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) },
525 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) },
8f977e42
IA		 526 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) },
527 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) },
528 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) },
529 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) },
530 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) },
531 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) },
532 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) },
533 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) },
534 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) },
535 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) },
536 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) },
537 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) },
538 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) },
539 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) },
540 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) },
541 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) },
1da177e4 542 { USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) },
47900743 543 { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) },
e6ac4a40
IA		 544 { USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) },
545 { USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) },
207c47e1 546 { USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) },
bde62185 547 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) },
4eaf60e0
TS		 548 { USB_DEVICE(FTDI_VID, FTDI_IBS_US485_PID) },
549 { USB_DEVICE(FTDI_VID, FTDI_IBS_PICPRO_PID) },
550 { USB_DEVICE(FTDI_VID, FTDI_IBS_PCMCIA_PID) },
551 { USB_DEVICE(FTDI_VID, FTDI_IBS_PK1_PID) },
552 { USB_DEVICE(FTDI_VID, FTDI_IBS_RS232MON_PID) },
553 { USB_DEVICE(FTDI_VID, FTDI_IBS_APP70_PID) },
554 { USB_DEVICE(FTDI_VID, FTDI_IBS_PEDO_PID) },
555 { USB_DEVICE(FTDI_VID, FTDI_IBS_PROD_PID) },
e6ac4a40 556 /*
42f8aa94
PS		 557 * Due to many user requests for multiple ELV devices we enable
558 * them by default.
e6ac4a40 559 */
42f8aa94
PS		 560 { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) },
561 { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) },
562 { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) },
563 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) },
564 { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) },
565 { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) },
566 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) },
567 { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) },
568 { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) },
569 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) },
570 { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) },
571 { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) },
572 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) },
573 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) },
574 { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) },
575 { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) },
576 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) },
577 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) },
4ae897df 578 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1010PC_PID) },
42f8aa94 579 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) },
b5894a50 580 { USB_DEVICE(FTDI_VID, FTDI_ELV_HS485_PID) },
5c09d144
DB		 581 { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) },
582 { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) },
583 { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) },
584 { USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) },
585 { USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) },
586 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) },
587 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) },
ec434e9b 588 { USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) },
9d37ff64
JC		 589 { USB_DEVICE(FTDI_VID, FTDI_CCSLOAD_N_GO_3_PID) },
590 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU64_4_PID) },
591 { USB_DEVICE(FTDI_VID, FTDI_CCSPRIME8_5_PID) },
1da177e4
LT		 592 { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) },
593 { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) },
594 { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) },
595 { USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) },
e6ac4a40 596 { USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) },
1da177e4 597 { USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) },
c3d36c45 598 { USB_DEVICE(FTDI_VID, FTDI_OCEANIC_PID) },
ef31fec0 599 { USB_DEVICE(TTI_VID, TTI_QL355P_PID) },
6f92872c 600 { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) },
1da177e4
LT		 601 { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) },
602 { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) },
603 { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) },
604 { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) },
6f92872c
IA		 605 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) },
606 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) },
e6ac4a40
IA		 607 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) },
608 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) },
609 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) },
610 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) },
611 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) },
612 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) },
613 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) },
614 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) },
6f92872c 615 { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
8f977e42 616 { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) },
34d1a8aa
IA		 617 { USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) },
618 { USB_DEVICE(FTDI_VID, FTDI_MHAM_YS_PID) },
9b1513d9
IA		 619 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) },
620 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) },
34d1a8aa
IA		 621 { USB_DEVICE(FTDI_VID, FTDI_MHAM_IC_PID) },
622 { USB_DEVICE(FTDI_VID, FTDI_MHAM_DB9_PID) },
623 { USB_DEVICE(FTDI_VID, FTDI_MHAM_RS232_PID) },
624 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y9_PID) },
740a4282
IA		 625 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) },
626 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) },
9b1513d9 627 { USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) },
c1f8ea7d
SH		 628 { USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) },
629 { USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) },
c9c7746d
RS		 630 { USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) },
631 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) },
09c280a2 632 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) },
c9c7746d 633 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) },
09c280a2 634 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HRC_PID) },
34910434 635 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16IC_PID) },
b4723ae3
IA		 636 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) },
637 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) },
effac8be 638 { USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) },
641adaae 639 { USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) },
7e1c0b86 640 { USB_DEVICE(FTDI_VID, FTDI_ECLO_COM_1WIRE_PID) },
a94b52ac
IA		 641 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) },
642 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) },
ce40d290 643 { USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) },
cdd3b156 644 { USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) },
7e0258fd 645 { USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) },
bf58fbd5 646 { USB_DEVICE(ICOM_ID1_VID, ICOM_ID1_PID) },
62a13db3 647 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_TMU_PID) },
20a0f47e 648 { USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) },
eb79b4fd 649 { USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) },
48437486 650 { USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) },
e1979fef 651 { USB_DEVICE(TESTO_VID, TESTO_USB_INTERFACE_PID) },
eaede2cb 652 { USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) },
9978f9e1
IA		 653 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) },
654 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) },
655 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) },
40c36092 656 { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) },
b760dac2
MG		 657 { USB_DEVICE(FTDI_VID, FTDI_NDI_HUC_PID),
658 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
659 { USB_DEVICE(FTDI_VID, FTDI_NDI_SPECTRA_SCU_PID),
660 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
661 { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_2_PID),
662 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
663 { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_3_PID),
664 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
665 { USB_DEVICE(FTDI_VID, FTDI_NDI_AURORA_SCU_PID),
666 .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
822c7ef4 667 { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
762e92fa 668 { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) },
a5f62399 669 { USB_DEVICE(FTDI_VID, FTDI_PHI_FISCO_PID) },
d7fde2d6 670 { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) },
4bb0ef19 671 { USB_DEVICE(FTDI_VID, FTDI_ELSTER_UNICOM_PID) },
11171d1b 672 { USB_DEVICE(FTDI_VID, FTDI_PROPOX_JTAGCABLEII_PID) },
fa91d43b 673 { USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID),
20734345
HW		 674 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
675 { USB_DEVICE(FIC_VID, FIC_NEO1973_DEBUG_PID),
676 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
677 { USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID),
678 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
a00c3cad
FK		 679 { USB_DEVICE(FTDI_VID, LMI_LM3S_DEVEL_BOARD_PID),
680 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
681 { USB_DEVICE(FTDI_VID, LMI_LM3S_EVAL_BOARD_PID),
682 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
14511412
KH		 683 { USB_DEVICE(FTDI_VID, FTDI_TURTELIZER_PID),
684 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
26ab7053 685 { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
2542335c 686 { USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) },
a18f80b4 687 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO4x4_PID) },
96285cb8
GC		 688 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DGQG_PID) },
689 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DUSB_PID) },
45eeff84 690 { USB_DEVICE(ALTI2_VID, ALTI2_N3_PID) },
ca80801b 691 { USB_DEVICE(FTDI_VID, DIEBOLD_BCS_SE923_PID) },
7f82b6dd
AW		 692 { USB_DEVICE(ATMEL_VID, STK541_PID) },
693 { USB_DEVICE(DE_VID, STB_PID) },
694 { USB_DEVICE(DE_VID, WHT_PID) },
b0d65900
MH		 695 { USB_DEVICE(ADI_VID, ADI_GNICE_PID),
696 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
ae27d843 697 { USB_DEVICE(JETI_VID, JETI_SPC1201_PID) },
1002bb77
NP		 698 { USB_DEVICE(MARVELL_VID, MARVELL_SHEEVAPLUG_PID),
699 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
d46130ab 700 { USB_DEVICE(LARSENBRUSGAARD_VID, LB_ALTITRACK_PID) },
fca4404c 701 { USB_DEVICE(GN_OTOMETRICS_VID, AURICAL_USB_PID) },
c47aacc6 702 { USB_DEVICE(BAYER_VID, BAYER_CONTOUR_CABLE_PID) },
50d0678e
DV		 703 { USB_DEVICE(FTDI_VID, MARVELL_OPENRD_PID),
704 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
fdcb0a0f
IA		 705 { }, /* Optional parameter entry */
706 { } /* Terminating entry */
1da177e4
LT		 707};
708
464cbb24 709MODULE_DEVICE_TABLE(usb, id_table_combined);
1da177e4
LT		 710
711static struct usb_driver ftdi_driver = {
712 .name = "ftdi_sio",
713 .probe = usb_serial_probe,
714 .disconnect = usb_serial_disconnect,
715 .id_table = id_table_combined,
5c09d144 716 .no_dynamic_id = 1,
1da177e4
LT		 717};
718
4c4c9432 719static const char *ftdi_chip_name[] = {
1da177e4
LT		 720 [SIO] = "SIO", /* the serial part of FT8U100AX */
721 [FT8U232AM] = "FT8U232AM",
722 [FT232BM] = "FT232BM",
723 [FT2232C] = "FT2232C",
d8b21606 724 [FT232RL] = "FT232RL",
094c2e6d
MA		 725 [FT2232H] = "FT2232H",
726 [FT4232H] = "FT4232H"
1da177e4
LT		 727};
728
729
730/* Constants for read urb and write urb */
731#define BUFSZ 512
1da177e4
LT		 732
733/* rx_flags */
734#define THROTTLED 0x01
735#define ACTUALLY_THROTTLED 0x02
736
1da177e4
LT		 737/* Used for TIOCMIWAIT */
738#define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD)
739#define FTDI_STATUS_B1_MASK (FTDI_RS_BI)
740/* End TIOCMIWAIT */
741
bbc5d276
RK		 742#define FTDI_IMPL_ASYNC_FLAGS = (ASYNC_SPD_HI | ASYNC_SPD_VHI \
743 | ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP)
1da177e4
LT		 744
745/* function prototypes for a FTDI serial converter */
464cbb24
AC		 746static int ftdi_sio_probe(struct usb_serial *serial,
747 const struct usb_device_id *id);
464cbb24
AC		 748static int ftdi_sio_port_probe(struct usb_serial_port *port);
749static int ftdi_sio_port_remove(struct usb_serial_port *port);
a509a7e4 750static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port);
335f8514
AC		 751static void ftdi_close(struct usb_serial_port *port);
752static void ftdi_dtr_rts(struct usb_serial_port *port, int on);
464cbb24
AC		 753static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
754 const unsigned char *buf, int count);
755static int ftdi_write_room(struct tty_struct *tty);
756static int ftdi_chars_in_buffer(struct tty_struct *tty);
757static void ftdi_write_bulk_callback(struct urb *urb);
758static void ftdi_read_bulk_callback(struct urb *urb);
759static void ftdi_process_read(struct work_struct *work);
760static void ftdi_set_termios(struct tty_struct *tty,
761 struct usb_serial_port *port, struct ktermios *old);
762static int ftdi_tiocmget(struct tty_struct *tty, struct file *file);
763static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
764 unsigned int set, unsigned int clear);
765static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
766 unsigned int cmd, unsigned long arg);
767static void ftdi_break_ctl(struct tty_struct *tty, int break_state);
768static void ftdi_throttle(struct tty_struct *tty);
769static void ftdi_unthrottle(struct tty_struct *tty);
770
771static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base);
772static unsigned short int ftdi_232am_baud_to_divisor(int baud);
773static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base);
774static __u32 ftdi_232bm_baud_to_divisor(int baud);
094c2e6d
MA		 775static __u32 ftdi_2232h_baud_base_to_divisor(int baud, int base);
776static __u32 ftdi_2232h_baud_to_divisor(int baud);
1da177e4 777
ea65370d 778static struct usb_serial_driver ftdi_sio_device = {
18fcac35
GKH		 779 .driver = {
780 .owner = THIS_MODULE,
269bda1c 781 .name = "ftdi_sio",
18fcac35 782 },
269bda1c 783 .description = "FTDI USB Serial Device",
d9b1b787 784 .usb_driver = &ftdi_driver ,
8f977e42 785 .id_table = id_table_combined,
1da177e4 786 .num_ports = 1,
8f977e42 787 .probe = ftdi_sio_probe,
12bdbe03
JR		 788 .port_probe = ftdi_sio_port_probe,
789 .port_remove = ftdi_sio_port_remove,
1da177e4
LT		 790 .open = ftdi_open,
791 .close = ftdi_close,
335f8514 792 .dtr_rts = ftdi_dtr_rts,
1da177e4
LT		 793 .throttle = ftdi_throttle,
794 .unthrottle = ftdi_unthrottle,
795 .write = ftdi_write,
796 .write_room = ftdi_write_room,
797 .chars_in_buffer = ftdi_chars_in_buffer,
798 .read_bulk_callback = ftdi_read_bulk_callback,
799 .write_bulk_callback = ftdi_write_bulk_callback,
800 .tiocmget = ftdi_tiocmget,
801 .tiocmset = ftdi_tiocmset,
802 .ioctl = ftdi_ioctl,
803 .set_termios = ftdi_set_termios,
804 .break_ctl = ftdi_break_ctl,
1da177e4
LT		 805};
806
1da177e4
LT		 807
808#define WDR_TIMEOUT 5000 /* default urb timeout */
279e1545 809#define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */
1da177e4
LT		 810
811/* High and low are for DTR, RTS etc etc */
812#define HIGH 1
813#define LOW 0
814
22465400
IA		 815/* number of outstanding urbs to prevent userspace DoS from happening */
816#define URB_UPPER_LIMIT 42
817
1da177e4
LT		 818/*
819 * ***************************************************************************
fa91d43b 820 * Utility functions
1da177e4
LT		 821 * ***************************************************************************
822 */
823
824static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base)
825{
826 unsigned short int divisor;
464cbb24
AC		 827 /* divisor shifted 3 bits to the left */
828 int divisor3 = base / 2 / baud;
829 if ((divisor3 & 0x7) == 7)
830 divisor3++; /* round x.7/8 up to x+1 */
1da177e4
LT		 831 divisor = divisor3 >> 3;
832 divisor3 &= 0x7;
464cbb24
AC		 833 if (divisor3 == 1)
834 divisor |= 0xc000;
835 else if (divisor3 >= 4)
836 divisor |= 0x4000;
837 else if (divisor3 != 0)
838 divisor |= 0x8000;
839 else if (divisor == 1)
840 divisor = 0; /* special case for maximum baud rate */
1da177e4
LT		 841 return divisor;
842}
843
844static unsigned short int ftdi_232am_baud_to_divisor(int baud)
845{
464cbb24 846 return ftdi_232am_baud_base_to_divisor(baud, 48000000);
1da177e4
LT		 847}
848
849static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base)
850{
851 static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
852 __u32 divisor;
464cbb24
AC		 853 /* divisor shifted 3 bits to the left */
854 int divisor3 = base / 2 / baud;
1da177e4
LT		 855 divisor = divisor3 >> 3;
856 divisor |= (__u32)divfrac[divisor3 & 0x7] << 14;
857 /* Deal with special cases for highest baud rates. */
464cbb24
AC		 858 if (divisor == 1)
859 divisor = 0;
860 else if (divisor == 0x4001)
861 divisor = 1;
1da177e4
LT		 862 return divisor;
863}
864
865static __u32 ftdi_232bm_baud_to_divisor(int baud)
866{
464cbb24 867 return ftdi_232bm_baud_base_to_divisor(baud, 48000000);
1da177e4
LT		 868}
869
094c2e6d
MA		 870static __u32 ftdi_2232h_baud_base_to_divisor(int baud, int base)
871{
872 static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
873 __u32 divisor;
874 int divisor3;
875
876 /* hi-speed baud rate is 10-bit sampling instead of 16-bit */
877 divisor3 = (base / 10 / baud) * 8;
878
879 divisor = divisor3 >> 3;
880 divisor |= (__u32)divfrac[divisor3 & 0x7] << 14;
881 /* Deal with special cases for highest baud rates. */
882 if (divisor == 1)
883 divisor = 0;
884 else if (divisor == 0x4001)
885 divisor = 1;
886 /*
887 * Set this bit to turn off a divide by 2.5 on baud rate generator
888 * This enables baud rates up to 12Mbaud but cannot reach below 1200
889 * baud with this bit set
890 */
891 divisor |= 0x00020000;
892 return divisor;
893}
894
895static __u32 ftdi_2232h_baud_to_divisor(int baud)
896{
897 return ftdi_2232h_baud_base_to_divisor(baud, 120000000);
898}
899
74ede0ff
IA		 900#define set_mctrl(port, set) update_mctrl((port), (set), 0)
901#define clear_mctrl(port, clear) update_mctrl((port), 0, (clear))
902
464cbb24
AC		 903static int update_mctrl(struct usb_serial_port *port, unsigned int set,
904 unsigned int clear)
1da177e4
LT		 905{
906 struct ftdi_private *priv = usb_get_serial_port_data(port);
907 char *buf;
74ede0ff 908 unsigned urb_value;
1da177e4 909 int rv;
1da177e4 910
74ede0ff 911 if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
441b62c1 912 dbg("%s - DTR|RTS not being set|cleared", __func__);
74ede0ff
IA		 913 return 0; /* no change */
914 }
1da177e4 915
1da177e4 916 buf = kmalloc(1, GFP_NOIO);
9b0f2582 917 if (!buf)
1da177e4 918 return -ENOMEM;
74ede0ff
IA		 919
920 clear &= ~set; /* 'set' takes precedence over 'clear' */
921 urb_value = 0;
922 if (clear & TIOCM_DTR)
923 urb_value |= FTDI_SIO_SET_DTR_LOW;
924 if (clear & TIOCM_RTS)
925 urb_value |= FTDI_SIO_SET_RTS_LOW;
926 if (set & TIOCM_DTR)
927 urb_value |= FTDI_SIO_SET_DTR_HIGH;
928 if (set & TIOCM_RTS)
929 urb_value |= FTDI_SIO_SET_RTS_HIGH;
1da177e4
LT		 930 rv = usb_control_msg(port->serial->dev,
931 usb_sndctrlpipe(port->serial->dev, 0),
5c09d144 932 FTDI_SIO_SET_MODEM_CTRL_REQUEST,
1da177e4 933 FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
74ede0ff 934 urb_value, priv->interface,
1da177e4
LT		 935 buf, 0, WDR_TIMEOUT);
936
937 kfree(buf);
74ede0ff 938 if (rv < 0) {
43b11d33 939 dbg("%s Error from MODEM_CTRL urb: DTR %s, RTS %s",
441b62c1 940 __func__,
74ede0ff
IA		 941 (set & TIOCM_DTR) ? "HIGH" :
942 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
943 (set & TIOCM_RTS) ? "HIGH" :
944 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
945 } else {
441b62c1 946 dbg("%s - DTR %s, RTS %s", __func__,
74ede0ff
IA		 947 (set & TIOCM_DTR) ? "HIGH" :
948 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
949 (set & TIOCM_RTS) ? "HIGH" :
950 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
9b0f2582 951 /* FIXME: locking on last_dtr_rts */
74ede0ff
IA		 952 priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set;
953 }
1da177e4
LT		 954 return rv;
955}
956
957
464cbb24
AC		 958static __u32 get_ftdi_divisor(struct tty_struct *tty,
959 struct usb_serial_port *port)
1da177e4
LT		 960{ /* get_ftdi_divisor */
961 struct ftdi_private *priv = usb_get_serial_port_data(port);
962 __u32 div_value = 0;
963 int div_okay = 1;
964 int baud;
965
966 /*
464cbb24
AC		 967 * The logic involved in setting the baudrate can be cleanly split into
968 * 3 steps.
1da177e4 969 * 1. Standard baud rates are set in tty->termios->c_cflag
464cbb24
AC		 970 * 2. If these are not enough, you can set any speed using alt_speed as
971 * follows:
1da177e4
LT		 972 * - set tty->termios->c_cflag speed to B38400
973 * - set your real speed in tty->alt_speed; it gets ignored when
974 * alt_speed==0, (or)
464cbb24
AC		 975 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
976 * follows:
977 * flags & ASYNC_SPD_MASK == ASYNC_SPD_[HI, VHI, SHI, WARP],
978 * this just sets alt_speed to (HI: 57600, VHI: 115200,
979 * SHI: 230400, WARP: 460800)
1da177e4
LT		 980 * ** Steps 1, 2 are done courtesy of tty_get_baud_rate
981 * 3. You can also set baud rate by setting custom divisor as follows
982 * - set tty->termios->c_cflag speed to B38400
464cbb24
AC		 983 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
984 * follows:
1da177e4
LT		 985 * o flags & ASYNC_SPD_MASK == ASYNC_SPD_CUST
986 * o custom_divisor set to baud_base / your_new_baudrate
464cbb24
AC		 987 * ** Step 3 is done courtesy of code borrowed from serial.c
988 * I should really spend some time and separate + move this common
989 * code to serial.c, it is replicated in nearly every serial driver
990 * you see.
1da177e4
LT		 991 */
992
464cbb24
AC		 993 /* 1. Get the baud rate from the tty settings, this observes
994 alt_speed hack */
1da177e4 995
95da310e 996 baud = tty_get_baud_rate(tty);
441b62c1 997 dbg("%s - tty_get_baud_rate reports speed %d", __func__, baud);
1da177e4 998
464cbb24
AC		 999 /* 2. Observe async-compatible custom_divisor hack, update baudrate
1000 if needed */
1da177e4
LT		 1001
1002 if (baud == 38400 &&
1003 ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
1004 (priv->custom_divisor)) {
1005 baud = priv->baud_base / priv->custom_divisor;
464cbb24
AC		 1006 dbg("%s - custom divisor %d sets baud rate to %d",
1007 __func__, priv->custom_divisor, baud);
1da177e4
LT		 1008 }
1009
1010 /* 3. Convert baudrate to device-specific divisor */
1011
464cbb24
AC		 1012 if (!baud)
1013 baud = 9600;
1014 switch (priv->chip_type) {
1da177e4 1015 case SIO: /* SIO chip */
464cbb24 1016 switch (baud) {
1da177e4
LT		 1017 case 300: div_value = ftdi_sio_b300; break;
1018 case 600: div_value = ftdi_sio_b600; break;
1019 case 1200: div_value = ftdi_sio_b1200; break;
1020 case 2400: div_value = ftdi_sio_b2400; break;
1021 case 4800: div_value = ftdi_sio_b4800; break;
1022 case 9600: div_value = ftdi_sio_b9600; break;
1023 case 19200: div_value = ftdi_sio_b19200; break;
1024 case 38400: div_value = ftdi_sio_b38400; break;
1025 case 57600: div_value = ftdi_sio_b57600; break;
1026 case 115200: div_value = ftdi_sio_b115200; break;
1027 } /* baud */
1028 if (div_value == 0) {
464cbb24
AC		 1029 dbg("%s - Baudrate (%d) requested is not supported",
1030 __func__, baud);
1da177e4 1031 div_value = ftdi_sio_b9600;
bd5e47cc 1032 baud = 9600;
1da177e4
LT		 1033 div_okay = 0;
1034 }
1035 break;
1036 case FT8U232AM: /* 8U232AM chip */
1037 if (baud <= 3000000) {
1038 div_value = ftdi_232am_baud_to_divisor(baud);
1039 } else {
464cbb24 1040 dbg("%s - Baud rate too high!", __func__);
bd5e47cc 1041 baud = 9600;
1da177e4
LT		 1042 div_value = ftdi_232am_baud_to_divisor(9600);
1043 div_okay = 0;
1044 }
1045 break;
1046 case FT232BM: /* FT232BM chip */
1047 case FT2232C: /* FT2232C chip */
3b009c63 1048 case FT232RL:
1da177e4 1049 if (baud <= 3000000) {
b760dac2
MG		 1050 __u16 product_id = le16_to_cpu(
1051 port->serial->dev->descriptor.idProduct);
1052 if (((FTDI_NDI_HUC_PID == product_id) ||
1053 (FTDI_NDI_SPECTRA_SCU_PID == product_id) ||
1054 (FTDI_NDI_FUTURE_2_PID == product_id) ||
1055 (FTDI_NDI_FUTURE_3_PID == product_id) ||
1056 (FTDI_NDI_AURORA_SCU_PID == product_id)) &&
1057 (baud == 19200)) {
1058 baud = 1200000;
1059 }
1da177e4
LT		 1060 div_value = ftdi_232bm_baud_to_divisor(baud);
1061 } else {
464cbb24 1062 dbg("%s - Baud rate too high!", __func__);
1da177e4
LT		 1063 div_value = ftdi_232bm_baud_to_divisor(9600);
1064 div_okay = 0;
669a6db1 1065 baud = 9600;
1da177e4
LT		 1066 }
1067 break;
094c2e6d
MA		 1068 case FT2232H: /* FT2232H chip */
1069 case FT4232H: /* FT4232H chip */
1070 if ((baud <= 12000000) & (baud >= 1200)) {
1071 div_value = ftdi_2232h_baud_to_divisor(baud);
1072 } else if (baud < 1200) {
1073 div_value = ftdi_232bm_baud_to_divisor(baud);
1074 } else {
1075 dbg("%s - Baud rate too high!", __func__);
1076 div_value = ftdi_232bm_baud_to_divisor(9600);
1077 div_okay = 0;
1078 baud = 9600;
1079 }
1080 break;
1da177e4
LT		 1081 } /* priv->chip_type */
1082
1083 if (div_okay) {
1084 dbg("%s - Baud rate set to %d (divisor 0x%lX) on chip %s",
441b62c1 1085 __func__, baud, (unsigned long)div_value,
1da177e4
LT		 1086 ftdi_chip_name[priv->chip_type]);
1087 }
1088
95da310e 1089 tty_encode_baud_rate(tty, baud, baud);
464cbb24 1090 return div_value;
1da177e4
LT		 1091}
1092
95da310e
AC		 1093static int change_speed(struct tty_struct *tty, struct usb_serial_port *port)
1094{
1095 struct ftdi_private *priv = usb_get_serial_port_data(port);
1096 char *buf;
464cbb24 1097 __u16 urb_value;
95da310e
AC		 1098 __u16 urb_index;
1099 __u32 urb_index_value;
1100 int rv;
1101
1102 buf = kmalloc(1, GFP_NOIO);
1103 if (!buf)
1104 return -ENOMEM;
1105
1106 urb_index_value = get_ftdi_divisor(tty, port);
1107 urb_value = (__u16)urb_index_value;
1108 urb_index = (__u16)(urb_index_value >> 16);
1109 if (priv->interface) { /* FT2232C */
1110 urb_index = (__u16)((urb_index << 8) | priv->interface);
1111 }
1112
1113 rv = usb_control_msg(port->serial->dev,
1114 usb_sndctrlpipe(port->serial->dev, 0),
1115 FTDI_SIO_SET_BAUDRATE_REQUEST,
1116 FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
1117 urb_value, urb_index,
1118 buf, 0, WDR_SHORT_TIMEOUT);
1119
1120 kfree(buf);
1121 return rv;
1122}
1123
557aaa7f
AC		 1124static int write_latency_timer(struct usb_serial_port *port)
1125{
1126 struct ftdi_private *priv = usb_get_serial_port_data(port);
1127 struct usb_device *udev = port->serial->dev;
1128 char buf[1];
1129 int rv = 0;
1130 int l = priv->latency;
1131
1132 if (priv->flags & ASYNC_LOW_LATENCY)
1133 l = 1;
1134
1135 dbg("%s: setting latency timer = %i", __func__, l);
1136
1137 rv = usb_control_msg(udev,
1138 usb_sndctrlpipe(udev, 0),
1139 FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
1140 FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
1141 l, priv->interface,
1142 buf, 0, WDR_TIMEOUT);
95da310e 1143
557aaa7f
AC		 1144 if (rv < 0)
1145 dev_err(&port->dev, "Unable to write latency timer: %i\n", rv);
1146 return rv;
1147}
1148
1149static int read_latency_timer(struct usb_serial_port *port)
1150{
1151 struct ftdi_private *priv = usb_get_serial_port_data(port);
1152 struct usb_device *udev = port->serial->dev;
1153 unsigned short latency = 0;
1154 int rv = 0;
1155
1156
1157 dbg("%s", __func__);
1158
1159 rv = usb_control_msg(udev,
1160 usb_rcvctrlpipe(udev, 0),
1161 FTDI_SIO_GET_LATENCY_TIMER_REQUEST,
1162 FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE,
1163 0, priv->interface,
1164 (char *) &latency, 1, WDR_TIMEOUT);
1165
1166 if (rv < 0) {
1167 dev_err(&port->dev, "Unable to read latency timer: %i\n", rv);
1168 return -EIO;
1169 }
1170 return latency;
1171}
1da177e4 1172
464cbb24
AC		 1173static int get_serial_info(struct usb_serial_port *port,
1174 struct serial_struct __user *retinfo)
1da177e4
LT		 1175{
1176 struct ftdi_private *priv = usb_get_serial_port_data(port);
1177 struct serial_struct tmp;
1178
1179 if (!retinfo)
1180 return -EFAULT;
1181 memset(&tmp, 0, sizeof(tmp));
1182 tmp.flags = priv->flags;
1183 tmp.baud_base = priv->baud_base;
1184 tmp.custom_divisor = priv->custom_divisor;
1185 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1186 return -EFAULT;
1187 return 0;
1188} /* get_serial_info */
1189
1190
95da310e 1191static int set_serial_info(struct tty_struct *tty,
464cbb24 1192 struct usb_serial_port *port, struct serial_struct __user *newinfo)
1da177e4
LT		 1193{ /* set_serial_info */
1194 struct ftdi_private *priv = usb_get_serial_port_data(port);
1195 struct serial_struct new_serial;
1196 struct ftdi_private old_priv;
1197
1198 if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
1199 return -EFAULT;
6b447f04
AC		 1200
1201 lock_kernel();
464cbb24 1202 old_priv = *priv;
1da177e4
LT		 1203
1204 /* Do error checking and permission checking */
1205
1206 if (!capable(CAP_SYS_ADMIN)) {
1207 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
64905b48
DC		 1208 (priv->flags & ~ASYNC_USR_MASK))) {
1209 unlock_kernel();
1da177e4 1210 return -EPERM;
64905b48 1211 }
1da177e4
LT		 1212 priv->flags = ((priv->flags & ~ASYNC_USR_MASK) |
1213 (new_serial.flags & ASYNC_USR_MASK));
1214 priv->custom_divisor = new_serial.custom_divisor;
1215 goto check_and_exit;
1216 }
1217
1218 if ((new_serial.baud_base != priv->baud_base) &&
6b447f04
AC		 1219 (new_serial.baud_base < 9600)) {
1220 unlock_kernel();
1da177e4 1221 return -EINVAL;
6b447f04 1222 }
1da177e4
LT		 1223
1224 /* Make the changes - these are privileged changes! */
1225
1226 priv->flags = ((priv->flags & ~ASYNC_FLAGS) |
464cbb24 1227 (new_serial.flags & ASYNC_FLAGS));
1da177e4
LT		 1228 priv->custom_divisor = new_serial.custom_divisor;
1229
95da310e 1230 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
557aaa7f 1231 write_latency_timer(port);
1da177e4
LT		 1232
1233check_and_exit:
1234 if ((old_priv.flags & ASYNC_SPD_MASK) !=
1235 (priv->flags & ASYNC_SPD_MASK)) {
1236 if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
95da310e 1237 tty->alt_speed = 57600;
1da177e4 1238 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
95da310e 1239 tty->alt_speed = 115200;
1da177e4 1240 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
95da310e 1241 tty->alt_speed = 230400;
1da177e4 1242 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
95da310e 1243 tty->alt_speed = 460800;
1da177e4 1244 else
95da310e 1245 tty->alt_speed = 0;
1da177e4
LT		 1246 }
1247 if (((old_priv.flags & ASYNC_SPD_MASK) !=
1248 (priv->flags & ASYNC_SPD_MASK)) ||
1249 (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
1250 (old_priv.custom_divisor != priv->custom_divisor))) {
6b447f04 1251 unlock_kernel();
95da310e 1252 change_speed(tty, port);
1da177e4 1253 }
6b447f04
AC		 1254 else
1255 unlock_kernel();
95da310e 1256 return 0;
1da177e4
LT		 1257
1258} /* set_serial_info */
1259
1260
8f977e42
IA		 1261/* Determine type of FTDI chip based on USB config and descriptor. */
1262static void ftdi_determine_type(struct usb_serial_port *port)
1263{
1264 struct ftdi_private *priv = usb_get_serial_port_data(port);
1265 struct usb_serial *serial = port->serial;
1266 struct usb_device *udev = serial->dev;
1267 unsigned version;
1268 unsigned interfaces;
1269
1270 /* Assume it is not the original SIO device for now. */
f5e09b7c 1271 priv->baud_base = 48000000 / 2;
8f977e42
IA		 1272 priv->write_offset = 0;
1273
1274 version = le16_to_cpu(udev->descriptor.bcdDevice);
1275 interfaces = udev->actconfig->desc.bNumInterfaces;
441b62c1 1276 dbg("%s: bcdDevice = 0x%x, bNumInterfaces = %u", __func__,
8f977e42
IA		 1277 version, interfaces);
1278 if (interfaces > 1) {
1279 int inter;
1280
094c2e6d
MA		 1281 /* Multiple interfaces.*/
1282 if (version == 0x0800) {
1283 priv->chip_type = FT4232H;
1284 /* Hi-speed - baud clock runs at 120MHz */
1285 priv->baud_base = 120000000 / 2;
1286 } else if (version == 0x0700) {
1287 priv->chip_type = FT2232H;
1288 /* Hi-speed - baud clock runs at 120MHz */
1289 priv->baud_base = 120000000 / 2;
1290 } else
1291 priv->chip_type = FT2232C;
1292
8f977e42
IA		 1293 /* Determine interface code. */
1294 inter = serial->interface->altsetting->desc.bInterfaceNumber;
094c2e6d
MA		 1295 if (inter == 0) {
1296 priv->interface = INTERFACE_A;
1297 } else if (inter == 1) {
1298 priv->interface = INTERFACE_B;
1299 } else if (inter == 2) {
1300 priv->interface = INTERFACE_C;
1301 } else if (inter == 3) {
1302 priv->interface = INTERFACE_D;
1303 }
8f977e42
IA		 1304 /* BM-type devices have a bug where bcdDevice gets set
1305 * to 0x200 when iSerialNumber is 0. */
1306 if (version < 0x500) {
1307 dbg("%s: something fishy - bcdDevice too low for multi-interface device",
441b62c1 1308 __func__);
8f977e42
IA		 1309 }
1310 } else if (version < 0x200) {
1311 /* Old device. Assume its the original SIO. */
1312 priv->chip_type = SIO;
1313 priv->baud_base = 12000000 / 16;
1314 priv->write_offset = 1;
1315 } else if (version < 0x400) {
1316 /* Assume its an FT8U232AM (or FT8U245AM) */
1317 /* (It might be a BM because of the iSerialNumber bug,
1318 * but it will still work as an AM device.) */
1319 priv->chip_type = FT8U232AM;
3b009c63 1320 } else if (version < 0x600) {
8f977e42
IA		 1321 /* Assume its an FT232BM (or FT245BM) */
1322 priv->chip_type = FT232BM;
3b009c63
DB		 1323 } else {
1324 /* Assume its an FT232R */
1325 priv->chip_type = FT232RL;
8f977e42 1326 }
c197a8db 1327 dev_info(&udev->dev, "Detected %s\n", ftdi_chip_name[priv->chip_type]);
8f977e42
IA		 1328}
1329
1330
895f28ba
MA		 1331/* Determine the maximum packet size for the device. This depends on the chip
1332 * type and the USB host capabilities. The value should be obtained from the
1333 * device descriptor as the chip will use the appropriate values for the host.*/
1334static void ftdi_set_max_packet_size(struct usb_serial_port *port)
1335{
1336 struct ftdi_private *priv = usb_get_serial_port_data(port);
1337 struct usb_serial *serial = port->serial;
1338 struct usb_device *udev = serial->dev;
1339
1340 struct usb_interface *interface = serial->interface;
1341 struct usb_endpoint_descriptor *ep_desc = &interface->cur_altsetting->endpoint[1].desc;
1342
1343 unsigned num_endpoints;
1344 int i = 0;
1345
1346 num_endpoints = interface->cur_altsetting->desc.bNumEndpoints;
1347 dev_info(&udev->dev, "Number of endpoints %d\n", num_endpoints);
1348
1349 /* NOTE: some customers have programmed FT232R/FT245R devices
1350 * with an endpoint size of 0 - not good. In this case, we
1351 * want to override the endpoint descriptor setting and use a
1352 * value of 64 for wMaxPacketSize */
1353 for (i = 0; i < num_endpoints; i++) {
1354 dev_info(&udev->dev, "Endpoint %d MaxPacketSize %d\n", i+1,
1355 interface->cur_altsetting->endpoint[i].desc.wMaxPacketSize);
1356 ep_desc = &interface->cur_altsetting->endpoint[i].desc;
1357 if (ep_desc->wMaxPacketSize == 0) {
1358 ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
1359 dev_info(&udev->dev, "Overriding wMaxPacketSize on endpoint %d\n", i);
1360 }
1361 }
1362
1363 /* set max packet size based on descriptor */
1364 priv->max_packet_size = ep_desc->wMaxPacketSize;
1365
1366 dev_info(&udev->dev, "Setting MaxPacketSize %d\n", priv->max_packet_size);
1367}
1368
1369
1da177e4
LT		 1370/*
1371 * ***************************************************************************
1372 * Sysfs Attribute
1373 * ***************************************************************************
1374 */
1375
464cbb24
AC		 1376static ssize_t show_latency_timer(struct device *dev,
1377 struct device_attribute *attr, char *buf)
1da177e4
LT		 1378{
1379 struct usb_serial_port *port = to_usb_serial_port(dev);
1380 struct ftdi_private *priv = usb_get_serial_port_data(port);
557aaa7f
AC		 1381 if (priv->flags & ASYNC_LOW_LATENCY)
1382 return sprintf(buf, "1\n");
1383 else
1384 return sprintf(buf, "%i\n", priv->latency);
1da177e4
LT		 1385}
1386
557aaa7f 1387
1da177e4 1388/* Write a new value of the latency timer, in units of milliseconds. */
464cbb24
AC		 1389static ssize_t store_latency_timer(struct device *dev,
1390 struct device_attribute *attr, const char *valbuf,
1391 size_t count)
1da177e4
LT		 1392{
1393 struct usb_serial_port *port = to_usb_serial_port(dev);
1394 struct ftdi_private *priv = usb_get_serial_port_data(port);
1da177e4
LT		 1395 int v = simple_strtoul(valbuf, NULL, 10);
1396 int rv = 0;
5c09d144 1397
557aaa7f
AC		 1398 priv->latency = v;
1399 rv = write_latency_timer(port);
1400 if (rv < 0)
1da177e4 1401 return -EIO;
1da177e4
LT		 1402 return count;
1403}
1404
1405/* Write an event character directly to the FTDI register. The ASCII
1406 value is in the low 8 bits, with the enable bit in the 9th bit. */
464cbb24
AC		 1407static ssize_t store_event_char(struct device *dev,
1408 struct device_attribute *attr, const char *valbuf, size_t count)
1da177e4
LT		 1409{
1410 struct usb_serial_port *port = to_usb_serial_port(dev);
1411 struct ftdi_private *priv = usb_get_serial_port_data(port);
12bdbe03 1412 struct usb_device *udev = port->serial->dev;
1da177e4
LT		 1413 char buf[1];
1414 int v = simple_strtoul(valbuf, NULL, 10);
1415 int rv = 0;
5c09d144 1416
441b62c1 1417 dbg("%s: setting event char = %i", __func__, v);
5c09d144 1418
1da177e4
LT		 1419 rv = usb_control_msg(udev,
1420 usb_sndctrlpipe(udev, 0),
1421 FTDI_SIO_SET_EVENT_CHAR_REQUEST,
1422 FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE,
5c09d144 1423 v, priv->interface,
1da177e4 1424 buf, 0, WDR_TIMEOUT);
5c09d144 1425
1da177e4
LT		 1426 if (rv < 0) {
1427 dbg("Unable to write event character: %i", rv);
1428 return -EIO;
1429 }
5c09d144 1430
1da177e4
LT		 1431 return count;
1432}
1433
464cbb24
AC		 1434static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer,
1435 store_latency_timer);
1da177e4
LT		 1436static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char);
1437
12bdbe03 1438static int create_sysfs_attrs(struct usb_serial_port *port)
13f4db9e 1439{
12bdbe03 1440 struct ftdi_private *priv = usb_get_serial_port_data(port);
13f4db9e 1441 int retval = 0;
1da177e4 1442
464cbb24 1443 dbg("%s", __func__);
13f4db9e 1444
1da177e4
LT		 1445 /* XXX I've no idea if the original SIO supports the event_char
1446 * sysfs parameter, so I'm playing it safe. */
1447 if (priv->chip_type != SIO) {
1448 dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]);
12bdbe03 1449 retval = device_create_file(&port->dev, &dev_attr_event_char);
13f4db9e 1450 if ((!retval) &&
97cd49eb
SM		 1451 (priv->chip_type == FT232BM ||
1452 priv->chip_type == FT2232C ||
094c2e6d
MA		 1453 priv->chip_type == FT232RL ||
1454 priv->chip_type == FT2232H ||
1455 priv->chip_type == FT4232H)) {
12bdbe03 1456 retval = device_create_file(&port->dev,
13f4db9e 1457 &dev_attr_latency_timer);
1da177e4
LT		 1458 }
1459 }
13f4db9e 1460 return retval;
1da177e4
LT		 1461}
1462
12bdbe03 1463static void remove_sysfs_attrs(struct usb_serial_port *port)
1da177e4 1464{
12bdbe03 1465 struct ftdi_private *priv = usb_get_serial_port_data(port);
1da177e4 1466
464cbb24 1467 dbg("%s", __func__);
1da177e4 1468
1da177e4
LT		 1469 /* XXX see create_sysfs_attrs */
1470 if (priv->chip_type != SIO) {
12bdbe03 1471 device_remove_file(&port->dev, &dev_attr_event_char);
ed6e5282
AB		 1472 if (priv->chip_type == FT232BM ||
1473 priv->chip_type == FT2232C ||
094c2e6d
MA		 1474 priv->chip_type == FT232RL ||
1475 priv->chip_type == FT2232H ||
1476 priv->chip_type == FT4232H) {
12bdbe03 1477 device_remove_file(&port->dev, &dev_attr_latency_timer);
1da177e4
LT		 1478 }
1479 }
5c09d144 1480
1da177e4
LT		 1481}
1482
1483/*
1484 * ***************************************************************************
1485 * FTDI driver specific functions
1486 * ***************************************************************************
1487 */
1488
8f977e42 1489/* Probe function to check for special devices */
464cbb24
AC		 1490static int ftdi_sio_probe(struct usb_serial *serial,
1491 const struct usb_device_id *id)
8f977e42 1492{
464cbb24
AC		 1493 struct ftdi_sio_quirk *quirk =
1494 (struct ftdi_sio_quirk *)id->driver_info;
fa91d43b
TL		 1495
1496 if (quirk && quirk->probe) {
1497 int ret = quirk->probe(serial);
1498 if (ret != 0)
1499 return ret;
1500 }
1501
8f977e42
IA		 1502 usb_set_serial_data(serial, (void *)id->driver_info);
1503
fa91d43b 1504 return 0;
8f977e42
IA		 1505}
1506
12bdbe03 1507static int ftdi_sio_port_probe(struct usb_serial_port *port)
1da177e4 1508{
1da177e4 1509 struct ftdi_private *priv;
0ffbbe25
ON		 1510 struct ftdi_sio_quirk *quirk = usb_get_serial_data(port->serial);
1511
13f4db9e 1512
464cbb24 1513 dbg("%s", __func__);
1da177e4 1514
80b6ca48 1515 priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL);
464cbb24 1516 if (!priv) {
194343d9 1517 dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", __func__,
464cbb24 1518 sizeof(struct ftdi_private));
1da177e4
LT		 1519 return -ENOMEM;
1520 }
1da177e4 1521
c45d6320 1522 kref_init(&priv->kref);
1da177e4 1523 spin_lock_init(&priv->rx_lock);
22465400 1524 spin_lock_init(&priv->tx_lock);
464cbb24 1525 init_waitqueue_head(&priv->delta_msr_wait);
1da177e4
LT		 1526 /* This will push the characters through immediately rather
1527 than queue a task to deliver them */
1528 priv->flags = ASYNC_LOW_LATENCY;
1529
0ffbbe25
ON		 1530 if (quirk && quirk->port_probe)
1531 quirk->port_probe(priv);
1532
1da177e4 1533 /* Increase the size of read buffers */
1bc3c9e1 1534 kfree(port->bulk_in_buffer);
464cbb24 1535 port->bulk_in_buffer = kmalloc(BUFSZ, GFP_KERNEL);
1da177e4 1536 if (!port->bulk_in_buffer) {
464cbb24 1537 kfree(priv);
1da177e4
LT		 1538 return -ENOMEM;
1539 }
1540 if (port->read_urb) {
1541 port->read_urb->transfer_buffer = port->bulk_in_buffer;
1542 port->read_urb->transfer_buffer_length = BUFSZ;
1543 }
1544
c4028958
DH		 1545 INIT_DELAYED_WORK(&priv->rx_work, ftdi_process_read);
1546 priv->port = port;
76854cea 1547
1da177e4
LT		 1548 /* Free port's existing write urb and transfer buffer. */
1549 if (port->write_urb) {
464cbb24 1550 usb_free_urb(port->write_urb);
1da177e4
LT		 1551 port->write_urb = NULL;
1552 }
1bc3c9e1
JJ		 1553 kfree(port->bulk_out_buffer);
1554 port->bulk_out_buffer = NULL;
1da177e4 1555
12bdbe03 1556 usb_set_serial_port_data(port, priv);
1da177e4 1557
464cbb24 1558 ftdi_determine_type(port);
895f28ba 1559 ftdi_set_max_packet_size(port);
557aaa7f 1560 read_latency_timer(port);
12bdbe03
JR		 1561 create_sysfs_attrs(port);
1562 return 0;
1563}
1da177e4 1564
8f977e42
IA		 1565/* Setup for the USB-UIRT device, which requires hardwired
1566 * baudrate (38400 gets mapped to 312500) */
1da177e4 1567/* Called from usbserial:serial_probe */
464cbb24 1568static void ftdi_USB_UIRT_setup(struct ftdi_private *priv)
8f977e42 1569{
464cbb24 1570 dbg("%s", __func__);
1da177e4 1571
1da177e4
LT		 1572 priv->flags |= ASYNC_SPD_CUST;
1573 priv->custom_divisor = 77;
669a6db1 1574 priv->force_baud = 38400;
8f977e42 1575} /* ftdi_USB_UIRT_setup */
1da177e4 1576
8f977e42
IA		 1577/* Setup for the HE-TIRA1 device, which requires hardwired
1578 * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */
464cbb24
AC		 1579
1580static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv)
8f977e42 1581{
464cbb24 1582 dbg("%s", __func__);
1da177e4 1583
1da177e4
LT		 1584 priv->flags |= ASYNC_SPD_CUST;
1585 priv->custom_divisor = 240;
669a6db1 1586 priv->force_baud = 38400;
1da177e4 1587 priv->force_rtscts = 1;
8f977e42 1588} /* ftdi_HE_TIRA1_setup */
1da177e4 1589
b760dac2
MG		 1590/*
1591 * Module parameter to control latency timer for NDI FTDI-based USB devices.
1592 * If this value is not set in modprobe.conf.local its value will be set to 1ms.
1593 */
1594static int ndi_latency_timer = 1;
1595
1596/* Setup for the NDI FTDI-based USB devices, which requires hardwired
1597 * baudrate (19200 gets mapped to 1200000).
1598 *
1599 * Called from usbserial:serial_probe.
1600 */
1601static int ftdi_NDI_device_setup(struct usb_serial *serial)
1602{
1603 struct usb_device *udev = serial->dev;
1604 int latency = ndi_latency_timer;
1605 int rv = 0;
1606 char buf[1];
1607
1608 if (latency == 0)
1609 latency = 1;
1610 if (latency > 99)
1611 latency = 99;
1612
1613 dbg("%s setting NDI device latency to %d", __func__, latency);
1614 dev_info(&udev->dev, "NDI device with a latency value of %d", latency);
1615
1616 rv = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
1617 FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
1618 FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
1619 latency, 0, buf, 0, WDR_TIMEOUT);
1620 return 0;
1621}
1622
fa91d43b 1623/*
20734345
HW		 1624 * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko
1625 * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from
1626 * userspace using openocd.
fa91d43b 1627 */
20734345 1628static int ftdi_jtag_probe(struct usb_serial *serial)
fa91d43b
TL		 1629{
1630 struct usb_device *udev = serial->dev;
1631 struct usb_interface *interface = serial->interface;
1632
464cbb24 1633 dbg("%s", __func__);
fa91d43b
TL		 1634
1635 if (interface == udev->actconfig->interface[0]) {
c197a8db
GKH		 1636 dev_info(&udev->dev,
1637 "Ignoring serial port reserved for JTAG\n");
fa91d43b
TL		 1638 return -ENODEV;
1639 }
1640
1641 return 0;
1642}
1da177e4 1643
546d7eec
KV		 1644/*
1645 * The Matrix Orbital VK204-25-USB has an invalid IN endpoint.
1646 * We have to correct it if we want to read from it.
1647 */
1648static int ftdi_mtxorb_hack_setup(struct usb_serial *serial)
1649{
1650 struct usb_host_endpoint *ep = serial->dev->ep_in[1];
1651 struct usb_endpoint_descriptor *ep_desc = &ep->desc;
1652
1653 if (ep->enabled && ep_desc->wMaxPacketSize == 0) {
fd05e720 1654 ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
c197a8db
GKH		 1655 dev_info(&serial->dev->dev,
1656 "Fixing invalid wMaxPacketSize on read pipe\n");
546d7eec
KV		 1657 }
1658
1659 return 0;
1660}
1661
c45d6320
AS		 1662static void ftdi_sio_priv_release(struct kref *k)
1663{
1664 struct ftdi_private *priv = container_of(k, struct ftdi_private, kref);
1665
1666 kfree(priv);
1667}
1668
12bdbe03
JR		 1669static int ftdi_sio_port_remove(struct usb_serial_port *port)
1670{
1da177e4
LT		 1671 struct ftdi_private *priv = usb_get_serial_port_data(port);
1672
441b62c1 1673 dbg("%s", __func__);
1da177e4 1674
12bdbe03 1675 remove_sysfs_attrs(port);
5c09d144 1676
80193195 1677 kref_put(&priv->kref, ftdi_sio_priv_release);
1da177e4 1678
12bdbe03
JR		 1679 return 0;
1680}
1da177e4 1681
a509a7e4 1682static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port)
1da177e4 1683{ /* ftdi_open */
1da177e4
LT		 1684 struct usb_device *dev = port->serial->dev;
1685 struct ftdi_private *priv = usb_get_serial_port_data(port);
1686 unsigned long flags;
5c09d144 1687
1da177e4
LT		 1688 int result = 0;
1689 char buf[1]; /* Needed for the usb_control_msg I think */
1690
441b62c1 1691 dbg("%s", __func__);
1da177e4 1692
22465400
IA		 1693 spin_lock_irqsave(&priv->tx_lock, flags);
1694 priv->tx_bytes = 0;
1695 spin_unlock_irqrestore(&priv->tx_lock, flags);
1696 spin_lock_irqsave(&priv->rx_lock, flags);
1697 priv->rx_bytes = 0;
1698 spin_unlock_irqrestore(&priv->rx_lock, flags);
1699
95da310e
AC		 1700 if (tty)
1701 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1da177e4 1702
557aaa7f
AC		 1703 write_latency_timer(port);
1704
1da177e4
LT		 1705 /* No error checking for this (will get errors later anyway) */
1706 /* See ftdi_sio.h for description of what is reset */
1707 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
5c09d144
DB		 1708 FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
1709 FTDI_SIO_RESET_SIO,
1da177e4
LT		 1710 priv->interface, buf, 0, WDR_TIMEOUT);
1711
1712 /* Termios defaults are set by usb_serial_init. We don't change
c4f01240 1713 port->tty->termios - this would lose speed settings, etc.
1da177e4
LT		 1714 This is same behaviour as serial.c/rs_open() - Kuba */
1715
1716 /* ftdi_set_termios will send usb control messages */
95da310e
AC		 1717 if (tty)
1718 ftdi_set_termios(tty, port, tty->termios);
1da177e4 1719
1da177e4
LT		 1720 /* Not throttled */
1721 spin_lock_irqsave(&priv->rx_lock, flags);
1722 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
1723 spin_unlock_irqrestore(&priv->rx_lock, flags);
1724
1725 /* Start reading from the device */
76854cea 1726 priv->rx_processed = 0;
1da177e4 1727 usb_fill_bulk_urb(port->read_urb, dev,
464cbb24
AC		 1728 usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress),
1729 port->read_urb->transfer_buffer,
1730 port->read_urb->transfer_buffer_length,
1731 ftdi_read_bulk_callback, port);
1da177e4
LT		 1732 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
1733 if (result)
194343d9
GKH		 1734 dev_err(&port->dev,
1735 "%s - failed submitting read urb, error %d\n",
1736 __func__, result);
c45d6320
AS		 1737 else
1738 kref_get(&priv->kref);
1da177e4
LT		 1739
1740 return result;
1741} /* ftdi_open */
1742
1743
335f8514
AC		 1744static void ftdi_dtr_rts(struct usb_serial_port *port, int on)
1745{
1746 struct ftdi_private *priv = usb_get_serial_port_data(port);
1747 char buf[1];
1748
1749 mutex_lock(&port->serial->disc_mutex);
1750 if (!port->serial->disconnected) {
1751 /* Disable flow control */
1752 if (!on && usb_control_msg(port->serial->dev,
1753 usb_sndctrlpipe(port->serial->dev, 0),
1754 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
1755 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
1756 0, priv->interface, buf, 0,
1757 WDR_TIMEOUT) < 0) {
1758 dev_err(&port->dev, "error from flowcontrol urb\n");
1759 }
1760 /* drop RTS and DTR */
1761 if (on)
1762 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1763 else
1764 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1765 }
1766 mutex_unlock(&port->serial->disc_mutex);
1767}
1da177e4 1768
5c09d144 1769/*
1da177e4
LT		 1770 * usbserial:__serial_close only calls ftdi_close if the point is open
1771 *
1772 * This only gets called when it is the last close
5c09d144
DB		 1773 *
1774 *
1da177e4
LT		 1775 */
1776
335f8514 1777static void ftdi_close(struct usb_serial_port *port)
1da177e4 1778{ /* ftdi_close */
1da177e4 1779 struct ftdi_private *priv = usb_get_serial_port_data(port);
1da177e4 1780
441b62c1 1781 dbg("%s", __func__);
1da177e4 1782
76854cea
IA		 1783
1784 /* cancel any scheduled reading */
c45d6320 1785 cancel_delayed_work_sync(&priv->rx_work);
5c09d144 1786
1da177e4 1787 /* shutdown our bulk read */
794c944e 1788 usb_kill_urb(port->read_urb);
c45d6320 1789 kref_put(&priv->kref, ftdi_sio_priv_release);
1da177e4
LT		 1790} /* ftdi_close */
1791
1792
5c09d144 1793
1da177e4
LT		 1794/* The SIO requires the first byte to have:
1795 * B0 1
1796 * B1 0
1797 * B2..7 length of message excluding byte 0
1798 *
1799 * The new devices do not require this byte
1800 */
95da310e 1801static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
1da177e4
LT		 1802 const unsigned char *buf, int count)
1803{ /* ftdi_write */
1804 struct ftdi_private *priv = usb_get_serial_port_data(port);
1805 struct urb *urb;
1806 unsigned char *buffer;
1807 int data_offset ; /* will be 1 for the SIO and 0 otherwise */
1808 int status;
1809 int transfer_size;
22465400 1810 unsigned long flags;
1da177e4 1811
441b62c1 1812 dbg("%s port %d, %d bytes", __func__, port->number, count);
1da177e4
LT		 1813
1814 if (count == 0) {
1815 dbg("write request of 0 bytes");
1816 return 0;
1817 }
22465400
IA		 1818 spin_lock_irqsave(&priv->tx_lock, flags);
1819 if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) {
1820 spin_unlock_irqrestore(&priv->tx_lock, flags);
441b62c1 1821 dbg("%s - write limit hit\n", __func__);
22465400
IA		 1822 return 0;
1823 }
62127a58 1824 priv->tx_outstanding_urbs++;
22465400 1825 spin_unlock_irqrestore(&priv->tx_lock, flags);
5c09d144 1826
1da177e4 1827 data_offset = priv->write_offset;
464cbb24 1828 dbg("data_offset set to %d", data_offset);
1da177e4
LT		 1829
1830 /* Determine total transfer size */
1831 transfer_size = count;
1832 if (data_offset > 0) {
1833 /* Original sio needs control bytes too... */
1834 transfer_size += (data_offset *
895f28ba
MA		 1835 ((count + (priv->max_packet_size - 1 - data_offset)) /
1836 (priv->max_packet_size - data_offset)));
1da177e4
LT		 1837 }
1838
464cbb24 1839 buffer = kmalloc(transfer_size, GFP_ATOMIC);
1da177e4 1840 if (!buffer) {
194343d9
GKH		 1841 dev_err(&port->dev,
1842 "%s ran out of kernel memory for urb ...\n", __func__);
62127a58
ON		 1843 count = -ENOMEM;
1844 goto error_no_buffer;
1da177e4
LT		 1845 }
1846
1847 urb = usb_alloc_urb(0, GFP_ATOMIC);
1848 if (!urb) {
194343d9 1849 dev_err(&port->dev, "%s - no more free urbs\n", __func__);
62127a58
ON		 1850 count = -ENOMEM;
1851 goto error_no_urb;
1da177e4
LT		 1852 }
1853
1854 /* Copy data */
1855 if (data_offset > 0) {
464cbb24
AC		 1856 /* Original sio requires control byte at start of
1857 each packet. */
895f28ba 1858 int user_pktsz = priv->max_packet_size - data_offset;
1da177e4
LT		 1859 int todo = count;
1860 unsigned char *first_byte = buffer;
1861 const unsigned char *current_position = buf;
1862
1863 while (todo > 0) {
464cbb24 1864 if (user_pktsz > todo)
1da177e4 1865 user_pktsz = todo;
1da177e4 1866 /* Write the control byte at the front of the packet*/
5c09d144 1867 *first_byte = 1 | ((user_pktsz) << 2);
1da177e4 1868 /* Copy data for packet */
464cbb24 1869 memcpy(first_byte + data_offset,
1da177e4
LT		 1870 current_position, user_pktsz);
1871 first_byte += user_pktsz + data_offset;
1872 current_position += user_pktsz;
1873 todo -= user_pktsz;
1874 }
1875 } else {
1876 /* No control byte required. */
1877 /* Copy in the data to send */
464cbb24 1878 memcpy(buffer, buf, count);
1da177e4
LT		 1879 }
1880
464cbb24
AC		 1881 usb_serial_debug_data(debug, &port->dev, __func__,
1882 transfer_size, buffer);
1da177e4
LT		 1883
1884 /* fill the buffer and send it */
5c09d144 1885 usb_fill_bulk_urb(urb, port->serial->dev,
464cbb24
AC		 1886 usb_sndbulkpipe(port->serial->dev,
1887 port->bulk_out_endpointAddress),
1888 buffer, transfer_size,
1889 ftdi_write_bulk_callback, port);
1da177e4
LT		 1890
1891 status = usb_submit_urb(urb, GFP_ATOMIC);
1892 if (status) {
194343d9
GKH		 1893 dev_err(&port->dev,
1894 "%s - failed submitting write urb, error %d\n",
1895 __func__, status);
1da177e4 1896 count = status;
62127a58 1897 goto error;
22465400
IA		 1898 } else {
1899 spin_lock_irqsave(&priv->tx_lock, flags);
22465400
IA		 1900 priv->tx_outstanding_bytes += count;
1901 priv->tx_bytes += count;
1902 spin_unlock_irqrestore(&priv->tx_lock, flags);
1da177e4
LT		 1903 }
1904
1905 /* we are done with this urb, so let the host driver
1906 * really free it when it is finished with it */
62127a58 1907 usb_free_urb(urb);
1da177e4 1908
441b62c1 1909 dbg("%s write returning: %d", __func__, count);
1da177e4 1910 return count;
62127a58
ON		 1911error:
1912 usb_free_urb(urb);
1913error_no_urb:
464cbb24 1914 kfree(buffer);
62127a58
ON		 1915error_no_buffer:
1916 spin_lock_irqsave(&priv->tx_lock, flags);
1917 priv->tx_outstanding_urbs--;
1918 spin_unlock_irqrestore(&priv->tx_lock, flags);
1919 return count;
1da177e4
LT		 1920} /* ftdi_write */
1921
1922
1923/* This function may get called when the device is closed */
1924
464cbb24 1925static void ftdi_write_bulk_callback(struct urb *urb)
1da177e4 1926{
22465400 1927 unsigned long flags;
cdc97792 1928 struct usb_serial_port *port = urb->context;
22465400
IA		 1929 struct ftdi_private *priv;
1930 int data_offset; /* will be 1 for the SIO and 0 otherwise */
1931 unsigned long countback;
0fb0aa18 1932 int status = urb->status;
1da177e4
LT		 1933
1934 /* free up the transfer buffer, as usb_free_urb() does not do this */
464cbb24 1935 kfree(urb->transfer_buffer);
1da177e4 1936
441b62c1 1937 dbg("%s - port %d", __func__, port->number);
5c09d144 1938
22465400
IA		 1939 priv = usb_get_serial_port_data(port);
1940 if (!priv) {
441b62c1 1941 dbg("%s - bad port private data pointer - exiting", __func__);
22465400
IA		 1942 return;
1943 }
1944 /* account for transferred data */
1945 countback = urb->actual_length;
1946 data_offset = priv->write_offset;
1947 if (data_offset > 0) {
1948 /* Subtract the control bytes */
895f28ba 1949 countback -= (data_offset * DIV_ROUND_UP(countback, priv->max_packet_size));
22465400
IA		 1950 }
1951 spin_lock_irqsave(&priv->tx_lock, flags);
1952 --priv->tx_outstanding_urbs;
1953 priv->tx_outstanding_bytes -= countback;
1954 spin_unlock_irqrestore(&priv->tx_lock, flags);
1955
87c1edd2
JW		 1956 if (status) {
1957 dbg("nonzero write bulk status received: %d", status);
1958 return;
1959 }
1960
cf2c7481 1961 usb_serial_port_softint(port);
1da177e4
LT		 1962} /* ftdi_write_bulk_callback */
1963
1964
95da310e 1965static int ftdi_write_room(struct tty_struct *tty)
1da177e4 1966{
95da310e 1967 struct usb_serial_port *port = tty->driver_data;
22465400
IA		 1968 struct ftdi_private *priv = usb_get_serial_port_data(port);
1969 int room;
1970 unsigned long flags;
1971
441b62c1 1972 dbg("%s - port %d", __func__, port->number);
1da177e4 1973
22465400
IA		 1974 spin_lock_irqsave(&priv->tx_lock, flags);
1975 if (priv->tx_outstanding_urbs < URB_UPPER_LIMIT) {
1976 /*
1977 * We really can take anything the user throws at us
1978 * but let's pick a nice big number to tell the tty
1979 * layer that we have lots of free space
1980 */
1981 room = 2048;
1982 } else {
1983 room = 0;
1984 }
1985 spin_unlock_irqrestore(&priv->tx_lock, flags);
1986 return room;
95da310e 1987}
1da177e4 1988
95da310e
AC		 1989static int ftdi_chars_in_buffer(struct tty_struct *tty)
1990{
1991 struct usb_serial_port *port = tty->driver_data;
22465400
IA		 1992 struct ftdi_private *priv = usb_get_serial_port_data(port);
1993 int buffered;
1994 unsigned long flags;
1995
441b62c1 1996 dbg("%s - port %d", __func__, port->number);
1da177e4 1997
22465400
IA		 1998 spin_lock_irqsave(&priv->tx_lock, flags);
1999 buffered = (int)priv->tx_outstanding_bytes;
2000 spin_unlock_irqrestore(&priv->tx_lock, flags);
2001 if (buffered < 0) {
194343d9
GKH		 2002 dev_err(&port->dev, "%s outstanding tx bytes is negative!\n",
2003 __func__);
22465400
IA		 2004 buffered = 0;
2005 }
2006 return buffered;
95da310e 2007}
1da177e4 2008
95da310e
AC		 2009static void ftdi_read_bulk_callback(struct urb *urb)
2010{
cdc97792 2011 struct usb_serial_port *port = urb->context;
1da177e4
LT		 2012 struct tty_struct *tty;
2013 struct ftdi_private *priv;
22465400
IA		 2014 unsigned long countread;
2015 unsigned long flags;
0fb0aa18 2016 int status = urb->status;
1da177e4
LT		 2017
2018 if (urb->number_of_packets > 0) {
194343d9
GKH		 2019 dev_err(&port->dev, "%s transfer_buffer_length %d "
2020 "actual_length %d number of packets %d\n", __func__,
2021 urb->transfer_buffer_length,
2022 urb->actual_length, urb->number_of_packets);
2023 dev_err(&port->dev, "%s transfer_flags %x\n", __func__,
2024 urb->transfer_flags);
1da177e4
LT		 2025 }
2026
441b62c1 2027 dbg("%s - port %d", __func__, port->number);
1da177e4 2028
95da310e 2029 if (port->port.count <= 0)
1da177e4
LT		 2030 return;
2031
4a90f09b 2032 tty = tty_port_tty_get(&port->port);
1da177e4 2033 if (!tty) {
464cbb24 2034 dbg("%s - bad tty pointer - exiting", __func__);
1da177e4
LT		 2035 return;
2036 }
2037
2038 priv = usb_get_serial_port_data(port);
2039 if (!priv) {
441b62c1 2040 dbg("%s - bad port private data pointer - exiting", __func__);
4a90f09b 2041 goto out;
1da177e4
LT		 2042 }
2043
464cbb24 2044 if (urb != port->read_urb)
194343d9 2045 dev_err(&port->dev, "%s - Not my urb!\n", __func__);
1da177e4 2046
0fb0aa18 2047 if (status) {
464cbb24
AC		 2048 /* This will happen at close every time so it is a dbg not an
2049 err */
2050 dbg("(this is ok on close) nonzero read bulk status received: %d", status);
4a90f09b 2051 goto out;
1da177e4
LT		 2052 }
2053
22465400
IA		 2054 /* count data bytes, but not status bytes */
2055 countread = urb->actual_length;
895f28ba 2056 countread -= 2 * DIV_ROUND_UP(countread, priv->max_packet_size);
22465400
IA		 2057 spin_lock_irqsave(&priv->rx_lock, flags);
2058 priv->rx_bytes += countread;
2059 spin_unlock_irqrestore(&priv->rx_lock, flags);
2060
c4028958 2061 ftdi_process_read(&priv->rx_work.work);
4a90f09b
AC		 2062out:
2063 tty_kref_put(tty);
1da177e4
LT		 2064} /* ftdi_read_bulk_callback */
2065
2066
464cbb24 2067static void ftdi_process_read(struct work_struct *work)
1da177e4 2068{ /* ftdi_process_read */
c4028958
DH		 2069 struct ftdi_private *priv =
2070 container_of(work, struct ftdi_private, rx_work.work);
2071 struct usb_serial_port *port = priv->port;
1da177e4
LT		 2072 struct urb *urb;
2073 struct tty_struct *tty;
1da177e4 2074 char error_flag;
5c09d144 2075 unsigned char *data;
1da177e4
LT		 2076
2077 int i;
2078 int result;
2079 int need_flip;
2080 int packet_offset;
76854cea 2081 unsigned long flags;
1da177e4 2082
441b62c1 2083 dbg("%s - port %d", __func__, port->number);
1da177e4 2084
95da310e 2085 if (port->port.count <= 0)
1da177e4
LT		 2086 return;
2087
4a90f09b 2088 tty = tty_port_tty_get(&port->port);
1da177e4 2089 if (!tty) {
464cbb24 2090 dbg("%s - bad tty pointer - exiting", __func__);
1da177e4
LT		 2091 return;
2092 }
2093
2094 priv = usb_get_serial_port_data(port);
2095 if (!priv) {
441b62c1 2096 dbg("%s - bad port private data pointer - exiting", __func__);
4a90f09b 2097 goto out;
1da177e4
LT		 2098 }
2099
2100 urb = port->read_urb;
2101 if (!urb) {
441b62c1 2102 dbg("%s - bad read_urb pointer - exiting", __func__);
4a90f09b 2103 goto out;
1da177e4
LT		 2104 }
2105
2106 data = urb->transfer_buffer;
2107
76854cea 2108 if (priv->rx_processed) {
441b62c1 2109 dbg("%s - already processed: %d bytes, %d remain", __func__,
76854cea
IA		 2110 priv->rx_processed,
2111 urb->actual_length - priv->rx_processed);
1da177e4 2112 } else {
76854cea 2113 /* The first two bytes of every read packet are status */
464cbb24
AC		 2114 if (urb->actual_length > 2)
2115 usb_serial_debug_data(debug, &port->dev, __func__,
2116 urb->actual_length, data);
2117 else
2118 dbg("Status only: %03oo %03oo", data[0], data[1]);
76854cea 2119 }
1da177e4
LT		 2120
2121
2122 /* TO DO -- check for hung up line and handle appropriately: */
2123 /* send hangup */
2124 /* See acm.c - you do a tty_hangup - eg tty_hangup(tty) */
2125 /* if CD is dropped and the line is not CLOCAL then we should hangup */
2126
2127 need_flip = 0;
464cbb24 2128 for (packet_offset = priv->rx_processed;
895f28ba 2129 packet_offset < urb->actual_length; packet_offset += priv->max_packet_size) {
76854cea
IA		 2130 int length;
2131
464cbb24
AC		 2132 /* Compare new line status to the old one, signal if different/
2133 N.B. packet may be processed more than once, but differences
2134 are only processed once. */
00185a60
JL		 2135 char new_status = data[packet_offset + 0] &
2136 FTDI_STATUS_B0_MASK;
2137 if (new_status != priv->prev_status) {
2138 priv->diff_status |=
2139 new_status ^ priv->prev_status;
2140 wake_up_interruptible(&priv->delta_msr_wait);
2141 priv->prev_status = new_status;
1da177e4
LT		 2142 }
2143
895f28ba 2144 length = min_t(u32, priv->max_packet_size, urb->actual_length-packet_offset)-2;
76854cea 2145 if (length < 0) {
194343d9
GKH		 2146 dev_err(&port->dev, "%s - bad packet length: %d\n",
2147 __func__, length+2);
76854cea
IA		 2148 length = 0;
2149 }
2150
76854cea 2151 if (priv->rx_flags & THROTTLED) {
441b62c1 2152 dbg("%s - throttled", __func__);
76854cea
IA		 2153 break;
2154 }
33f0f88f 2155 if (tty_buffer_request_room(tty, length) < length) {
464cbb24
AC		 2156 /* break out & wait for throttling/unthrottling to
2157 happen */
441b62c1 2158 dbg("%s - receive room low", __func__);
76854cea
IA		 2159 break;
2160 }
2161
1da177e4
LT		 2162 /* Handle errors and break */
2163 error_flag = TTY_NORMAL;
464cbb24
AC		 2164 /* Although the device uses a bitmask and hence can have
2165 multiple errors on a packet - the order here sets the
2166 priority the error is returned to the tty layer */
1da177e4 2167
464cbb24 2168 if (data[packet_offset+1] & FTDI_RS_OE) {
1da177e4
LT		 2169 error_flag = TTY_OVERRUN;
2170 dbg("OVERRRUN error");
2171 }
464cbb24 2172 if (data[packet_offset+1] & FTDI_RS_BI) {
1da177e4
LT		 2173 error_flag = TTY_BREAK;
2174 dbg("BREAK received");
72fda3ca 2175 usb_serial_handle_break(port);
1da177e4 2176 }
464cbb24 2177 if (data[packet_offset+1] & FTDI_RS_PE) {
1da177e4
LT		 2178 error_flag = TTY_PARITY;
2179 dbg("PARITY error");
2180 }
464cbb24 2181 if (data[packet_offset+1] & FTDI_RS_FE) {
1da177e4
LT		 2182 error_flag = TTY_FRAME;
2183 dbg("FRAMING error");
2184 }
76854cea
IA		 2185 if (length > 0) {
2186 for (i = 2; i < length+2; i++) {
5c09d144 2187 /* Note that the error flag is duplicated for
1da177e4
LT		 2188 every character received since we don't know
2189 which character it applied to */
24a15a62 2190 if (!usb_serial_handle_sysrq_char(tty, port,
72fda3ca
JW		 2191 data[packet_offset + i]))
2192 tty_insert_flip_char(tty,
2193 data[packet_offset + i],
2194 error_flag);
1da177e4
LT		 2195 }
2196 need_flip = 1;
2197 }
2198
2199#ifdef NOT_CORRECT_BUT_KEEPING_IT_FOR_NOW
2200 /* if a parity error is detected you get status packets forever
2201 until a character is sent without a parity error.
464cbb24
AC		 2202 This doesn't work well since the application receives a
2203 never ending stream of bad data - even though new data
2204 hasn't been sent. Therefore I (bill) have taken this out.
5c09d144 2205 However - this might make sense for framing errors and so on
1da177e4
LT		 2206 so I am leaving the code in for now.
2207 */
2208 else {
464cbb24 2209 if (error_flag != TTY_NORMAL) {
1da177e4 2210 dbg("error_flag is not normal");
464cbb24
AC		 2211 /* In this case it is just status - if that is
2212 an error send a bad character */
2213 if (tty->flip.count >= TTY_FLIPBUF_SIZE)
1da177e4 2214 tty_flip_buffer_push(tty);
1da177e4
LT		 2215 tty_insert_flip_char(tty, 0xff, error_flag);
2216 need_flip = 1;
2217 }
2218 }
2219#endif
2220 } /* "for(packet_offset=0..." */
2221
2222 /* Low latency */
464cbb24 2223 if (need_flip)
1da177e4 2224 tty_flip_buffer_push(tty);
1da177e4 2225
76854cea
IA		 2226 if (packet_offset < urb->actual_length) {
2227 /* not completely processed - record progress */
2228 priv->rx_processed = packet_offset;
2229 dbg("%s - incomplete, %d bytes processed, %d remain",
441b62c1 2230 __func__, packet_offset,
76854cea
IA		 2231 urb->actual_length - packet_offset);
2232 /* check if we were throttled while processing */
2233 spin_lock_irqsave(&priv->rx_lock, flags);
2234 if (priv->rx_flags & THROTTLED) {
2235 priv->rx_flags |= ACTUALLY_THROTTLED;
2236 spin_unlock_irqrestore(&priv->rx_lock, flags);
2237 dbg("%s - deferring remainder until unthrottled",
441b62c1 2238 __func__);
a9fec710 2239 goto out;
76854cea
IA		 2240 }
2241 spin_unlock_irqrestore(&priv->rx_lock, flags);
2242 /* if the port is closed stop trying to read */
464cbb24 2243 if (port->port.count > 0)
76854cea
IA		 2244 /* delay processing of remainder */
2245 schedule_delayed_work(&priv->rx_work, 1);
464cbb24 2246 else
441b62c1 2247 dbg("%s - port is closed", __func__);
4a90f09b 2248 goto out;
76854cea
IA		 2249 }
2250
2251 /* urb is completely processed */
2252 priv->rx_processed = 0;
2253
1da177e4 2254 /* if the port is closed stop trying to read */
464cbb24 2255 if (port->port.count > 0) {
1da177e4 2256 /* Continue trying to always read */
5c09d144 2257 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
464cbb24
AC		 2258 usb_rcvbulkpipe(port->serial->dev,
2259 port->bulk_in_endpointAddress),
2260 port->read_urb->transfer_buffer,
2261 port->read_urb->transfer_buffer_length,
2262 ftdi_read_bulk_callback, port);
1da177e4
LT		 2263
2264 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
2265 if (result)
194343d9
GKH		 2266 dev_err(&port->dev,
2267 "%s - failed resubmitting read urb, error %d\n",
2268 __func__, result);
1da177e4 2269 }
4a90f09b
AC		 2270out:
2271 tty_kref_put(tty);
1da177e4
LT		 2272} /* ftdi_process_read */
2273
2274
95da310e 2275static void ftdi_break_ctl(struct tty_struct *tty, int break_state)
1da177e4 2276{
95da310e 2277 struct usb_serial_port *port = tty->driver_data;
1da177e4 2278 struct ftdi_private *priv = usb_get_serial_port_data(port);
5c09d144 2279 __u16 urb_value = 0;
1da177e4 2280 char buf[1];
5c09d144 2281
1da177e4
LT		 2282 /* break_state = -1 to turn on break, and 0 to turn off break */
2283 /* see drivers/char/tty_io.c to see it used */
2284 /* last_set_data_urb_value NEVER has the break bit set in it */
2285
464cbb24 2286 if (break_state)
1da177e4 2287 urb_value = priv->last_set_data_urb_value | FTDI_SIO_SET_BREAK;
464cbb24 2288 else
5c09d144 2289 urb_value = priv->last_set_data_urb_value;
5c09d144 2290
464cbb24
AC		 2291 if (usb_control_msg(port->serial->dev,
2292 usb_sndctrlpipe(port->serial->dev, 0),
2293 FTDI_SIO_SET_DATA_REQUEST,
2294 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2295 urb_value , priv->interface,
2296 buf, 0, WDR_TIMEOUT) < 0) {
194343d9
GKH		 2297 dev_err(&port->dev, "%s FAILED to enable/disable break state "
2298 "(state was %d)\n", __func__, break_state);
5c09d144 2299 }
1da177e4 2300
464cbb24
AC		 2301 dbg("%s break state is %d - urb is %d", __func__,
2302 break_state, urb_value);
5c09d144 2303
1da177e4
LT		 2304}
2305
2306
2307/* old_termios contains the original termios settings and tty->termios contains
2308 * the new setting to be used
2309 * WARNING: set_termios calls this with old_termios in kernel space
2310 */
2311
95da310e
AC		 2312static void ftdi_set_termios(struct tty_struct *tty,
2313 struct usb_serial_port *port, struct ktermios *old_termios)
1da177e4
LT		 2314{ /* ftdi_termios */
2315 struct usb_device *dev = port->serial->dev;
1da177e4 2316 struct ftdi_private *priv = usb_get_serial_port_data(port);
95da310e 2317 struct ktermios *termios = tty->termios;
669a6db1 2318 unsigned int cflag = termios->c_cflag;
1da177e4
LT		 2319 __u16 urb_value; /* will hold the new flags */
2320 char buf[1]; /* Perhaps I should dynamically alloc this? */
5c09d144 2321
464cbb24 2322 /* Added for xon/xoff support */
669a6db1 2323 unsigned int iflag = termios->c_iflag;
1da177e4
LT		 2324 unsigned char vstop;
2325 unsigned char vstart;
5c09d144 2326
441b62c1 2327 dbg("%s", __func__);
1da177e4 2328
464cbb24
AC		 2329 /* Force baud rate if this device requires it, unless it is set to
2330 B0. */
669a6db1 2331 if (priv->force_baud && ((termios->c_cflag & CBAUD) != B0)) {
441b62c1 2332 dbg("%s: forcing baud rate for this device", __func__);
95da310e 2333 tty_encode_baud_rate(tty, priv->force_baud,
bd5e47cc 2334 priv->force_baud);
1da177e4
LT		 2335 }
2336
2337 /* Force RTS-CTS if this device requires it. */
2338 if (priv->force_rtscts) {
441b62c1 2339 dbg("%s: forcing rtscts for this device", __func__);
669a6db1 2340 termios->c_cflag |= CRTSCTS;
1da177e4
LT		 2341 }
2342
669a6db1 2343 cflag = termios->c_cflag;
1da177e4 2344
5c09d144
DB		 2345 /* FIXME -For this cut I don't care if the line is really changing or
2346 not - so just do the change regardless - should be able to
1da177e4 2347 compare old_termios and tty->termios */
5c09d144 2348 /* NOTE These routines can get interrupted by
464cbb24
AC		 2349 ftdi_sio_read_bulk_callback - need to examine what this means -
2350 don't see any problems yet */
5c09d144 2351
1da177e4 2352 /* Set number of data bits, parity, stop bits */
5c09d144 2353
669a6db1
AC		 2354 termios->c_cflag &= ~CMSPAR;
2355
1da177e4
LT		 2356 urb_value = 0;
2357 urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 :
2358 FTDI_SIO_SET_DATA_STOP_BITS_1);
5c09d144
DB		 2359 urb_value |= (cflag & PARENB ?
2360 (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD :
1da177e4
LT		 2361 FTDI_SIO_SET_DATA_PARITY_EVEN) :
2362 FTDI_SIO_SET_DATA_PARITY_NONE);
2363 if (cflag & CSIZE) {
2364 switch (cflag & CSIZE) {
2365 case CS5: urb_value |= 5; dbg("Setting CS5"); break;
2366 case CS6: urb_value |= 6; dbg("Setting CS6"); break;
2367 case CS7: urb_value |= 7; dbg("Setting CS7"); break;
2368 case CS8: urb_value |= 8; dbg("Setting CS8"); break;
2369 default:
194343d9 2370 dev_err(&port->dev, "CSIZE was set but not CS5-CS8\n");
1da177e4
LT		 2371 }
2372 }
2373
464cbb24
AC		 2374 /* This is needed by the break command since it uses the same command
2375 - but is or'ed with this value */
1da177e4 2376 priv->last_set_data_urb_value = urb_value;
5c09d144 2377
1da177e4 2378 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
5c09d144 2379 FTDI_SIO_SET_DATA_REQUEST,
1da177e4
LT		 2380 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2381 urb_value , priv->interface,
279e1545 2382 buf, 0, WDR_SHORT_TIMEOUT) < 0) {
194343d9
GKH		 2383 dev_err(&port->dev, "%s FAILED to set "
2384 "databits/stopbits/parity\n", __func__);
5c09d144 2385 }
1da177e4
LT		 2386
2387 /* Now do the baudrate */
464cbb24 2388 if ((cflag & CBAUD) == B0) {
1da177e4
LT		 2389 /* Disable flow control */
2390 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
5c09d144 2391 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
1da177e4 2392 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
5c09d144 2393 0, priv->interface,
1da177e4 2394 buf, 0, WDR_TIMEOUT) < 0) {
194343d9
GKH		 2395 dev_err(&port->dev,
2396 "%s error from disable flowcontrol urb\n",
2397 __func__);
5c09d144 2398 }
1da177e4 2399 /* Drop RTS and DTR */
74ede0ff 2400 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1da177e4
LT		 2401 } else {
2402 /* set the baudrate determined before */
464cbb24 2403 if (change_speed(tty, port))
194343d9
GKH		 2404 dev_err(&port->dev, "%s urb failed to set baudrate\n",
2405 __func__);
72a755fc 2406 /* Ensure RTS and DTR are raised when baudrate changed from 0 */
464cbb24 2407 if (!old_termios || (old_termios->c_cflag & CBAUD) == B0)
72a755fc 2408 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1da177e4
LT		 2409 }
2410
2411 /* Set flow control */
2412 /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */
2413 if (cflag & CRTSCTS) {
441b62c1 2414 dbg("%s Setting to CRTSCTS flow control", __func__);
5c09d144 2415 if (usb_control_msg(dev,
1da177e4 2416 usb_sndctrlpipe(dev, 0),
5c09d144 2417 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
1da177e4
LT		 2418 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2419 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface),
2420 buf, 0, WDR_TIMEOUT) < 0) {
194343d9
GKH		 2421 dev_err(&port->dev,
2422 "urb failed to set to rts/cts flow control\n");
5c09d144
DB		 2423 }
2424
2425 } else {
1da177e4
LT		 2426 /*
2427 * Xon/Xoff code
2428 *
464cbb24
AC		 2429 * Check the IXOFF status in the iflag component of the
2430 * termios structure. If IXOFF is not set, the pre-xon/xoff
2431 * code is executed.
2432 */
1da177e4 2433 if (iflag & IXOFF) {
464cbb24
AC		 2434 dbg("%s request to enable xonxoff iflag=%04x",
2435 __func__, iflag);
2436 /* Try to enable the XON/XOFF on the ftdi_sio
2437 * Set the vstart and vstop -- could have been done up
2438 * above where a lot of other dereferencing is done but
2439 * that would be very inefficient as vstart and vstop
2440 * are not always needed.
2441 */
669a6db1
AC		 2442 vstart = termios->c_cc[VSTART];
2443 vstop = termios->c_cc[VSTOP];
464cbb24 2444 urb_value = (vstop << 8) | (vstart);
1da177e4
LT		 2445
2446 if (usb_control_msg(dev,
2447 usb_sndctrlpipe(dev, 0),
2448 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2449 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2450 urb_value , (FTDI_SIO_XON_XOFF_HS
2451 | priv->interface),
2452 buf, 0, WDR_TIMEOUT) < 0) {
194343d9
GKH		 2453 dev_err(&port->dev, "urb failed to set to "
2454 "xon/xoff flow control\n");
1da177e4
LT		 2455 }
2456 } else {
464cbb24
AC		 2457 /* else clause to only run if cflag ! CRTSCTS and iflag
2458 * ! XOFF. CHECKME Assuming XON/XOFF handled by tty
2459 * stack - not by device */
441b62c1 2460 dbg("%s Turning off hardware flow control", __func__);
5c09d144 2461 if (usb_control_msg(dev,
1da177e4 2462 usb_sndctrlpipe(dev, 0),
5c09d144 2463 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
1da177e4 2464 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
5c09d144 2465 0, priv->interface,
1da177e4 2466 buf, 0, WDR_TIMEOUT) < 0) {
194343d9
GKH		 2467 dev_err(&port->dev,
2468 "urb failed to clear flow control\n");
5c09d144 2469 }
1da177e4 2470 }
5c09d144 2471
1da177e4
LT		 2472 }
2473 return;
95da310e 2474}
1da177e4 2475
95da310e 2476static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
1da177e4 2477{
95da310e 2478 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2479 struct ftdi_private *priv = usb_get_serial_port_data(port);
2480 unsigned char buf[2];
2481 int ret;
2482
441b62c1 2483 dbg("%s TIOCMGET", __func__);
1da177e4
LT		 2484 switch (priv->chip_type) {
2485 case SIO:
2486 /* Request the status from the device */
464cbb24
AC		 2487 ret = usb_control_msg(port->serial->dev,
2488 usb_rcvctrlpipe(port->serial->dev, 0),
2489 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2490 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2491 0, 0,
2492 buf, 1, WDR_TIMEOUT);
5d1ca6cf 2493 if (ret < 0)
464cbb24 2494 return ret;
1da177e4
LT		 2495 break;
2496 case FT8U232AM:
2497 case FT232BM:
2498 case FT2232C:
ed6e5282 2499 case FT232RL:
094c2e6d
MA		 2500 case FT2232H:
2501 case FT4232H:
464cbb24
AC		 2502 /* the 8U232AM returns a two byte value (the sio is a 1 byte
2503 value) - in the same format as the data returned from the in
2504 point */
2505 ret = usb_control_msg(port->serial->dev,
2506 usb_rcvctrlpipe(port->serial->dev, 0),
2507 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2508 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2509 0, priv->interface,
2510 buf, 2, WDR_TIMEOUT);
5d1ca6cf 2511 if (ret < 0)
464cbb24 2512 return ret;
1da177e4
LT		 2513 break;
2514 default:
2515 return -EFAULT;
1da177e4 2516 }
5c09d144 2517
1da177e4
LT		 2518 return (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
2519 (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) |
2520 (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) |
2521 (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0) |
5c09d144 2522 priv->last_dtr_rts;
1da177e4
LT		 2523}
2524
464cbb24 2525static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
95da310e 2526 unsigned int set, unsigned int clear)
1da177e4 2527{
95da310e 2528 struct usb_serial_port *port = tty->driver_data;
441b62c1 2529 dbg("%s TIOCMSET", __func__);
74ede0ff 2530 return update_mctrl(port, set, clear);
1da177e4
LT		 2531}
2532
2533
464cbb24
AC		 2534static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
2535 unsigned int cmd, unsigned long arg)
1da177e4 2536{
95da310e 2537 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2538 struct ftdi_private *priv = usb_get_serial_port_data(port);
2539
441b62c1 2540 dbg("%s cmd 0x%04x", __func__, cmd);
1da177e4
LT		 2541
2542 /* Based on code from acm.c and others */
2543 switch (cmd) {
2544
1da177e4 2545 case TIOCGSERIAL: /* gets serial port data */
464cbb24
AC		 2546 return get_serial_info(port,
2547 (struct serial_struct __user *) arg);
1da177e4
LT		 2548
2549 case TIOCSSERIAL: /* sets serial port data */
464cbb24
AC		 2550 return set_serial_info(tty, port,
2551 (struct serial_struct __user *) arg);
1da177e4
LT		 2552
2553 /*
2554 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
2555 * - mask passed in arg for lines of interest
2556 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
2557 * Caller should use TIOCGICOUNT to see which one it was.
2558 *
2559 * This code is borrowed from linux/drivers/char/serial.c
2560 */
2561 case TIOCMIWAIT:
2562 while (priv != NULL) {
2563 interruptible_sleep_on(&priv->delta_msr_wait);
2564 /* see if a signal did it */
2565 if (signal_pending(current))
2566 return -ERESTARTSYS;
2567 else {
2568 char diff = priv->diff_status;
2569
464cbb24 2570 if (diff == 0)
1da177e4 2571 return -EIO; /* no change => error */
1da177e4
LT		 2572
2573 /* Consume all events */
2574 priv->diff_status = 0;
2575
464cbb24
AC		 2576 /* Return 0 if caller wanted to know about
2577 these bits */
2578 if (((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) ||
2579 ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) ||
2580 ((arg & TIOCM_CD) && (diff & FTDI_RS0_RLSD)) ||
2581 ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS))) {
1da177e4
LT		 2582 return 0;
2583 }
2584 /*
464cbb24
AC		 2585 * Otherwise caller can't care less about what
2586 * happened,and so we continue to wait for more
2587 * events.
1da177e4
LT		 2588 */
2589 }
2590 }
95da310e 2591 return 0;
1da177e4
LT		 2592 default:
2593 break;
1da177e4 2594 }
464cbb24
AC		 2595 /* This is not necessarily an error - turns out the higher layers
2596 * will do some ioctls themselves (see comment above)
1da177e4 2597 */
441b62c1 2598 dbg("%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h", __func__, cmd);
95da310e
AC		 2599 return -ENOIOCTLCMD;
2600}
1da177e4 2601
95da310e 2602static void ftdi_throttle(struct tty_struct *tty)
1da177e4 2603{
95da310e 2604 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2605 struct ftdi_private *priv = usb_get_serial_port_data(port);
2606 unsigned long flags;
2607
441b62c1 2608 dbg("%s - port %d", __func__, port->number);
1da177e4
LT		 2609
2610 spin_lock_irqsave(&priv->rx_lock, flags);
2611 priv->rx_flags |= THROTTLED;
2612 spin_unlock_irqrestore(&priv->rx_lock, flags);
2613}
2614
2615
95da310e 2616static void ftdi_unthrottle(struct tty_struct *tty)
1da177e4 2617{
95da310e 2618 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2619 struct ftdi_private *priv = usb_get_serial_port_data(port);
2620 int actually_throttled;
2621 unsigned long flags;
2622
441b62c1 2623 dbg("%s - port %d", __func__, port->number);
1da177e4
LT		 2624
2625 spin_lock_irqsave(&priv->rx_lock, flags);
2626 actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED;
2627 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
2628 spin_unlock_irqrestore(&priv->rx_lock, flags);
2629
2630 if (actually_throttled)
c4028958 2631 schedule_delayed_work(&priv->rx_work, 0);
1da177e4
LT		 2632}
2633
464cbb24 2634static int __init ftdi_init(void)
1da177e4
LT		 2635{
2636 int retval;
2637
441b62c1 2638 dbg("%s", __func__);
fdcb0a0f
IA		 2639 if (vendor > 0 && product > 0) {
2640 /* Add user specified VID/PID to reserved element of table. */
2641 int i;
2642 for (i = 0; id_table_combined[i].idVendor; i++)
2643 ;
2644 id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
2645 id_table_combined[i].idVendor = vendor;
2646 id_table_combined[i].idProduct = product;
2647 }
8f977e42 2648 retval = usb_serial_register(&ftdi_sio_device);
1da177e4 2649 if (retval)
8f977e42 2650 goto failed_sio_register;
1da177e4 2651 retval = usb_register(&ftdi_driver);
5c09d144 2652 if (retval)
1da177e4
LT		 2653 goto failed_usb_register;
2654
c197a8db
GKH		 2655 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
2656 DRIVER_DESC "\n");
1da177e4
LT		 2657 return 0;
2658failed_usb_register:
8f977e42
IA		 2659 usb_serial_deregister(&ftdi_sio_device);
2660failed_sio_register:
1da177e4
LT		 2661 return retval;
2662}
2663
2664
464cbb24 2665static void __exit ftdi_exit(void)
1da177e4
LT		 2666{
2667
441b62c1 2668 dbg("%s", __func__);
1da177e4 2669
464cbb24
AC		 2670 usb_deregister(&ftdi_driver);
2671 usb_serial_deregister(&ftdi_sio_device);
1da177e4
LT		 2672
2673}
2674
2675
2676module_init(ftdi_init);
2677module_exit(ftdi_exit);
2678
464cbb24
AC		 2679MODULE_AUTHOR(DRIVER_AUTHOR);
2680MODULE_DESCRIPTION(DRIVER_DESC);
1da177e4
LT		 2681MODULE_LICENSE("GPL");
2682
2683module_param(debug, bool, S_IRUGO | S_IWUSR);
2684MODULE_PARM_DESC(debug, "Debug enabled or not");
fdcb0a0f
IA		 2685module_param(vendor, ushort, 0);
2686MODULE_PARM_DESC(vendor, "User specified vendor ID (default="
2687 __MODULE_STRING(FTDI_VID)")");
2688module_param(product, ushort, 0);
68265043 2689MODULE_PARM_DESC(product, "User specified product ID");
1da177e4 2690
b760dac2
MG		 2691module_param(ndi_latency_timer, int, S_IRUGO | S_IWUSR);
2692MODULE_PARM_DESC(ndi_latency_timer, "NDI device latency timer override");
Arne's tree of linux kernel.