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Merge commit 'v2.6.27-rc3' into x86/prototypes
[deliverable/linux.git] / drivers / usb / serial / ftdi_sio.c
1 /*
2 * USB FTDI SIO driver
3 *
4 * Copyright (C) 1999 - 2001
5 * Greg Kroah-Hartman (greg@kroah.com)
6 * Bill Ryder (bryder@sgi.com)
7 * Copyright (C) 2002
8 * Kuba Ober (kuba@mareimbrium.org)
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * See Documentation/usb/usb-serial.txt for more information on using this
16 * driver
17 *
18 * See http://ftdi-usb-sio.sourceforge.net for upto date testing info
19 * and extra documentation
20 *
21 * Change entries from 2004 and earlier can be found in versions of this
22 * file in kernel versions prior to the 2.6.24 release.
23 *
24 */
25
26 /* Bill Ryder - bryder@sgi.com - wrote the FTDI_SIO implementation */
27 /* Thanx to FTDI for so kindly providing details of the protocol required */
28 /* to talk to the device */
29 /* Thanx to gkh and the rest of the usb dev group for all code I have
30 assimilated :-) */
31
32 #include <linux/kernel.h>
33 #include <linux/errno.h>
34 #include <linux/init.h>
35 #include <linux/slab.h>
36 #include <linux/tty.h>
37 #include <linux/tty_driver.h>
38 #include <linux/tty_flip.h>
39 #include <linux/module.h>
40 #include <linux/spinlock.h>
41 #include <linux/uaccess.h>
42 #include <linux/usb.h>
43 #include <linux/serial.h>
44 #include <linux/usb/serial.h>
45 #include "ftdi_sio.h"
46
47 /*
48 * Version Information
49 */
50 #define DRIVER_VERSION "v1.4.3"
51 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober <kuba@mareimbrium.org>"
52 #define DRIVER_DESC "USB FTDI Serial Converters Driver"
53
54 static int debug;
55 static __u16 vendor = FTDI_VID;
56 static __u16 product;
57
58 struct ftdi_private {
59 ftdi_chip_type_t chip_type;
60 /* type of device, either SIO or FT8U232AM */
61 int baud_base; /* baud base clock for divisor setting */
62 int custom_divisor; /* custom_divisor kludge, this is for
63 baud_base (different from what goes to the
64 chip!) */
65 __u16 last_set_data_urb_value ;
66 /* the last data state set - needed for doing
67 * a break
68 */
69 int write_offset; /* This is the offset in the usb data block to
70 * write the serial data - it varies between
71 * devices
72 */
73 int flags; /* some ASYNC_xxxx flags are supported */
74 unsigned long last_dtr_rts; /* saved modem control outputs */
75 wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
76 char prev_status, diff_status; /* Used for TIOCMIWAIT */
77 __u8 rx_flags; /* receive state flags (throttling) */
78 spinlock_t rx_lock; /* spinlock for receive state */
79 struct delayed_work rx_work;
80 struct usb_serial_port *port;
81 int rx_processed;
82 unsigned long rx_bytes;
83
84 __u16 interface; /* FT2232C port interface (0 for FT232/245) */
85
86 speed_t force_baud; /* if non-zero, force the baud rate to
87 this value */
88 int force_rtscts; /* if non-zero, force RTS-CTS to always
89 be enabled */
90
91 spinlock_t tx_lock; /* spinlock for transmit state */
92 unsigned long tx_bytes;
93 unsigned long tx_outstanding_bytes;
94 unsigned long tx_outstanding_urbs;
95 };
96
97 /* struct ftdi_sio_quirk is used by devices requiring special attention. */
98 struct ftdi_sio_quirk {
99 int (*probe)(struct usb_serial *);
100 /* Special settings for probed ports. */
101 void (*port_probe)(struct ftdi_private *);
102 };
103
104 static int ftdi_jtag_probe(struct usb_serial *serial);
105 static int ftdi_mtxorb_hack_setup(struct usb_serial *serial);
106 static void ftdi_USB_UIRT_setup(struct ftdi_private *priv);
107 static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv);
108
109 static struct ftdi_sio_quirk ftdi_jtag_quirk = {
110 .probe = ftdi_jtag_probe,
111 };
112
113 static struct ftdi_sio_quirk ftdi_mtxorb_hack_quirk = {
114 .probe = ftdi_mtxorb_hack_setup,
115 };
116
117 static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = {
118 .port_probe = ftdi_USB_UIRT_setup,
119 };
120
121 static struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = {
122 .port_probe = ftdi_HE_TIRA1_setup,
123 };
124
125 /*
126 * The 8U232AM has the same API as the sio except for:
127 * - it can support MUCH higher baudrates; up to:
128 * o 921600 for RS232 and 2000000 for RS422/485 at 48MHz
129 * o 230400 at 12MHz
130 * so .. 8U232AM's baudrate setting codes are different
131 * - it has a two byte status code.
132 * - it returns characters every 16ms (the FTDI does it every 40ms)
133 *
134 * the bcdDevice value is used to differentiate FT232BM and FT245BM from
135 * the earlier FT8U232AM and FT8U232BM. For now, include all known VID/PID
136 * combinations in both tables.
137 * FIXME: perhaps bcdDevice can also identify 12MHz FT8U232AM devices,
138 * but I don't know if those ever went into mass production. [Ian Abbott]
139 */
140
141
142
143 static struct usb_device_id id_table_combined [] = {
144 { USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) },
145 { USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) },
146 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_0_PID) },
147 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_1_PID) },
148 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_2_PID) },
149 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_3_PID) },
150 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_4_PID) },
151 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_5_PID) },
152 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_6_PID) },
153 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_7_PID) },
154 { USB_DEVICE(FTDI_VID, FTDI_ACTZWAVE_PID) },
155 { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) },
156 { USB_DEVICE(FTDI_VID, FTDI_IPLUS_PID) },
157 { USB_DEVICE(FTDI_VID, FTDI_IPLUS2_PID) },
158 { USB_DEVICE(FTDI_VID, FTDI_DMX4ALL) },
159 { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) },
160 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) },
161 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) },
162 { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) },
163 { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) },
164 { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) },
165 { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) },
166 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) },
167 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) },
168 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) },
169 { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) },
170 { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) },
171 { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) },
172 { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) },
173 { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) },
174 { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) },
175 { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) },
176 { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) },
177 { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) },
178 { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) },
179 { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) },
180 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) },
181 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) },
182 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) },
183 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) },
184 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) },
185 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) },
186 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) },
187 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0100_PID) },
188 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0101_PID) },
189 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0102_PID) },
190 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0103_PID) },
191 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0104_PID) },
192 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0105_PID) },
193 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0106_PID) },
194 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0107_PID) },
195 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0108_PID) },
196 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0109_PID) },
197 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010A_PID) },
198 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010B_PID) },
199 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010C_PID) },
200 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010D_PID) },
201 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010E_PID) },
202 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010F_PID) },
203 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0110_PID) },
204 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0111_PID) },
205 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0112_PID) },
206 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0113_PID) },
207 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0114_PID) },
208 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0115_PID) },
209 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0116_PID) },
210 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0117_PID) },
211 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0118_PID) },
212 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0119_PID) },
213 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011A_PID) },
214 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011B_PID) },
215 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011C_PID) },
216 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011D_PID) },
217 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011E_PID) },
218 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011F_PID) },
219 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0120_PID) },
220 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0121_PID) },
221 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0122_PID) },
222 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0123_PID) },
223 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0124_PID) },
224 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0125_PID) },
225 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0126_PID) },
226 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0127_PID),
227 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
228 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0128_PID) },
229 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0129_PID) },
230 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012A_PID) },
231 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012B_PID) },
232 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012C_PID),
233 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
234 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012D_PID) },
235 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012E_PID) },
236 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012F_PID) },
237 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0130_PID) },
238 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0131_PID) },
239 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0132_PID) },
240 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0133_PID) },
241 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0134_PID) },
242 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0135_PID) },
243 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0136_PID) },
244 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0137_PID) },
245 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0138_PID) },
246 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0139_PID) },
247 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013A_PID) },
248 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013B_PID) },
249 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013C_PID) },
250 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013D_PID) },
251 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013E_PID) },
252 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013F_PID) },
253 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0140_PID) },
254 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0141_PID) },
255 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0142_PID) },
256 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0143_PID) },
257 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0144_PID) },
258 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0145_PID) },
259 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0146_PID) },
260 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0147_PID) },
261 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0148_PID) },
262 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0149_PID) },
263 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014A_PID) },
264 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014B_PID) },
265 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014C_PID) },
266 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014D_PID) },
267 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014E_PID) },
268 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014F_PID) },
269 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0150_PID) },
270 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0151_PID) },
271 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0152_PID) },
272 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0153_PID),
273 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
274 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0154_PID),
275 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
276 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0155_PID),
277 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
278 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0156_PID),
279 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
280 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0157_PID),
281 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
282 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0158_PID),
283 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
284 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0159_PID) },
285 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015A_PID) },
286 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015B_PID) },
287 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015C_PID) },
288 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015D_PID) },
289 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015E_PID) },
290 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015F_PID) },
291 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0160_PID) },
292 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0161_PID) },
293 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0162_PID) },
294 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0163_PID) },
295 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0164_PID) },
296 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0165_PID) },
297 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0166_PID) },
298 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0167_PID) },
299 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0168_PID) },
300 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0169_PID) },
301 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016A_PID) },
302 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016B_PID) },
303 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016C_PID) },
304 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016D_PID) },
305 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016E_PID) },
306 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016F_PID) },
307 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0170_PID) },
308 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0171_PID) },
309 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0172_PID) },
310 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0173_PID) },
311 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0174_PID) },
312 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0175_PID) },
313 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0176_PID) },
314 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0177_PID) },
315 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0178_PID) },
316 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0179_PID) },
317 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017A_PID) },
318 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017B_PID) },
319 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017C_PID) },
320 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017D_PID) },
321 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017E_PID) },
322 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017F_PID) },
323 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0180_PID) },
324 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0181_PID) },
325 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0182_PID) },
326 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0183_PID) },
327 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0184_PID) },
328 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0185_PID) },
329 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0186_PID) },
330 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0187_PID) },
331 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0188_PID) },
332 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0189_PID) },
333 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018A_PID) },
334 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018B_PID) },
335 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018C_PID) },
336 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018D_PID) },
337 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018E_PID) },
338 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018F_PID) },
339 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0190_PID) },
340 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0191_PID) },
341 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0192_PID) },
342 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0193_PID) },
343 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0194_PID) },
344 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0195_PID) },
345 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0196_PID) },
346 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0197_PID) },
347 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0198_PID) },
348 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0199_PID) },
349 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019A_PID) },
350 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019B_PID) },
351 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019C_PID) },
352 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019D_PID) },
353 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019E_PID) },
354 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019F_PID) },
355 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A0_PID) },
356 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A1_PID) },
357 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A2_PID) },
358 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A3_PID) },
359 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A4_PID) },
360 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A5_PID) },
361 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A6_PID) },
362 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A7_PID) },
363 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A8_PID) },
364 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A9_PID) },
365 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AA_PID) },
366 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AB_PID) },
367 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AC_PID) },
368 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AD_PID) },
369 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AE_PID) },
370 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AF_PID) },
371 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B0_PID) },
372 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B1_PID) },
373 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B2_PID) },
374 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B3_PID) },
375 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B4_PID) },
376 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B5_PID) },
377 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B6_PID) },
378 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B7_PID) },
379 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B8_PID) },
380 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B9_PID) },
381 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BA_PID) },
382 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BB_PID) },
383 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BC_PID) },
384 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BD_PID) },
385 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BE_PID) },
386 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BF_PID) },
387 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C0_PID) },
388 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C1_PID) },
389 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C2_PID) },
390 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C3_PID) },
391 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C4_PID) },
392 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C5_PID) },
393 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C6_PID) },
394 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C7_PID) },
395 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C8_PID) },
396 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C9_PID) },
397 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CA_PID) },
398 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CB_PID) },
399 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CC_PID) },
400 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CD_PID) },
401 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CE_PID) },
402 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CF_PID) },
403 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D0_PID) },
404 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D1_PID) },
405 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D2_PID) },
406 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D3_PID) },
407 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D4_PID) },
408 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D5_PID) },
409 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D6_PID) },
410 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D7_PID) },
411 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D8_PID) },
412 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D9_PID) },
413 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DA_PID) },
414 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DB_PID) },
415 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DC_PID) },
416 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DD_PID) },
417 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DE_PID) },
418 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DF_PID) },
419 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E0_PID) },
420 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E1_PID) },
421 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E2_PID) },
422 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E3_PID) },
423 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E4_PID) },
424 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E5_PID) },
425 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E6_PID) },
426 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E7_PID) },
427 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E8_PID) },
428 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E9_PID) },
429 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EA_PID) },
430 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EB_PID) },
431 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EC_PID) },
432 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01ED_PID) },
433 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EE_PID) },
434 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EF_PID) },
435 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F0_PID) },
436 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F1_PID) },
437 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F2_PID) },
438 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F3_PID) },
439 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F4_PID) },
440 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F5_PID) },
441 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F6_PID) },
442 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F7_PID) },
443 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F8_PID) },
444 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F9_PID) },
445 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FA_PID) },
446 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FB_PID) },
447 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FC_PID) },
448 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FD_PID) },
449 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FE_PID) },
450 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FF_PID) },
451 { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) },
452 { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) },
453 { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) },
454 { USB_DEVICE(FTDI_VID, FTDI_USBX_707_PID) },
455 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) },
456 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) },
457 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) },
458 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) },
459 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2106_PID) },
460 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) },
461 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) },
462 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) },
463 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) },
464 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) },
465 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) },
466 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) },
467 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) },
468 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) },
469 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) },
470 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) },
471 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) },
472 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) },
473 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) },
474 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) },
475 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) },
476 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) },
477 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) },
478 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) },
479 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) },
480 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) },
481 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) },
482 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) },
483 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) },
484 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) },
485 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) },
486 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) },
487 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) },
488 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) },
489 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) },
490 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) },
491 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) },
492 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) },
493 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) },
494 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) },
495 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) },
496 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) },
497 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) },
498 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) },
499 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) },
500 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) },
501 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) },
502 { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) },
503 { USB_DEVICE(OCT_VID, OCT_US101_PID) },
504 { USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID),
505 .driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk },
506 { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID),
507 .driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk },
508 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) },
509 { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) },
510 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) },
511 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) },
512 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) },
513 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) },
514 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) },
515 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) },
516 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) },
517 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) },
518 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) },
519 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) },
520 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) },
521 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) },
522 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) },
523 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) },
524 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) },
525 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) },
526 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) },
527 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) },
528 { USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) },
529 { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) },
530 { USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) },
531 { USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) },
532 { USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) },
533 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) },
534 { USB_DEVICE(FTDI_VID, FTDI_IBS_US485_PID) },
535 { USB_DEVICE(FTDI_VID, FTDI_IBS_PICPRO_PID) },
536 { USB_DEVICE(FTDI_VID, FTDI_IBS_PCMCIA_PID) },
537 { USB_DEVICE(FTDI_VID, FTDI_IBS_PK1_PID) },
538 { USB_DEVICE(FTDI_VID, FTDI_IBS_RS232MON_PID) },
539 { USB_DEVICE(FTDI_VID, FTDI_IBS_APP70_PID) },
540 { USB_DEVICE(FTDI_VID, FTDI_IBS_PEDO_PID) },
541 { USB_DEVICE(FTDI_VID, FTDI_IBS_PROD_PID) },
542 /*
543 * Due to many user requests for multiple ELV devices we enable
544 * them by default.
545 */
546 { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) },
547 { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) },
548 { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) },
549 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) },
550 { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) },
551 { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) },
552 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) },
553 { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) },
554 { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) },
555 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) },
556 { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) },
557 { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) },
558 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) },
559 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) },
560 { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) },
561 { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) },
562 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) },
563 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) },
564 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1010PC_PID) },
565 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) },
566 { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) },
567 { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) },
568 { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) },
569 { USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) },
570 { USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) },
571 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) },
572 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) },
573 { USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) },
574 { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) },
575 { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) },
576 { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) },
577 { USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) },
578 { USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) },
579 { USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) },
580 { USB_DEVICE(TTI_VID, TTI_QL355P_PID) },
581 { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) },
582 { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) },
583 { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) },
584 { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) },
585 { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) },
586 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) },
587 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) },
588 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) },
589 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) },
590 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) },
591 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) },
592 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) },
593 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) },
594 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) },
595 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) },
596 { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
597 { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) },
598 { USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) },
599 { USB_DEVICE(FTDI_VID, FTDI_MHAM_YS_PID) },
600 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) },
601 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) },
602 { USB_DEVICE(FTDI_VID, FTDI_MHAM_IC_PID) },
603 { USB_DEVICE(FTDI_VID, FTDI_MHAM_DB9_PID) },
604 { USB_DEVICE(FTDI_VID, FTDI_MHAM_RS232_PID) },
605 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y9_PID) },
606 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) },
607 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) },
608 { USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) },
609 { USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) },
610 { USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) },
611 { USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) },
612 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) },
613 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) },
614 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) },
615 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HRC_PID) },
616 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16IC_PID) },
617 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) },
618 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) },
619 { USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) },
620 { USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) },
621 { USB_DEVICE(FTDI_VID, FTDI_ECLO_COM_1WIRE_PID) },
622 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) },
623 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) },
624 { USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) },
625 { USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) },
626 { USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) },
627 { USB_DEVICE(ICOM_ID1_VID, ICOM_ID1_PID) },
628 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_TMU_PID) },
629 { USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) },
630 { USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) },
631 { USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) },
632 { USB_DEVICE(TESTO_VID, TESTO_USB_INTERFACE_PID) },
633 { USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) },
634 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) },
635 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) },
636 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) },
637 { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) },
638 { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
639 { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) },
640 { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) },
641 { USB_DEVICE(FTDI_VID, FTDI_ELSTER_UNICOM_PID) },
642 { USB_DEVICE(FTDI_VID, FTDI_PROPOX_JTAGCABLEII_PID) },
643 { USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID),
644 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
645 { USB_DEVICE(FIC_VID, FIC_NEO1973_DEBUG_PID),
646 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
647 { USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID),
648 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
649 { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
650 { USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) },
651 { }, /* Optional parameter entry */
652 { } /* Terminating entry */
653 };
654
655 MODULE_DEVICE_TABLE(usb, id_table_combined);
656
657 static struct usb_driver ftdi_driver = {
658 .name = "ftdi_sio",
659 .probe = usb_serial_probe,
660 .disconnect = usb_serial_disconnect,
661 .id_table = id_table_combined,
662 .no_dynamic_id = 1,
663 };
664
665 static const char *ftdi_chip_name[] = {
666 [SIO] = "SIO", /* the serial part of FT8U100AX */
667 [FT8U232AM] = "FT8U232AM",
668 [FT232BM] = "FT232BM",
669 [FT2232C] = "FT2232C",
670 [FT232RL] = "FT232RL",
671 };
672
673
674 /* Constants for read urb and write urb */
675 #define BUFSZ 512
676 #define PKTSZ 64
677
678 /* rx_flags */
679 #define THROTTLED 0x01
680 #define ACTUALLY_THROTTLED 0x02
681
682 /* Used for TIOCMIWAIT */
683 #define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD)
684 #define FTDI_STATUS_B1_MASK (FTDI_RS_BI)
685 /* End TIOCMIWAIT */
686
687 #define FTDI_IMPL_ASYNC_FLAGS = (ASYNC_SPD_HI | ASYNC_SPD_VHI \
688 | ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP)
689
690 /* function prototypes for a FTDI serial converter */
691 static int ftdi_sio_probe(struct usb_serial *serial,
692 const struct usb_device_id *id);
693 static void ftdi_shutdown(struct usb_serial *serial);
694 static int ftdi_sio_port_probe(struct usb_serial_port *port);
695 static int ftdi_sio_port_remove(struct usb_serial_port *port);
696 static int ftdi_open(struct tty_struct *tty,
697 struct usb_serial_port *port, struct file *filp);
698 static void ftdi_close(struct tty_struct *tty,
699 struct usb_serial_port *port, struct file *filp);
700 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
701 const unsigned char *buf, int count);
702 static int ftdi_write_room(struct tty_struct *tty);
703 static int ftdi_chars_in_buffer(struct tty_struct *tty);
704 static void ftdi_write_bulk_callback(struct urb *urb);
705 static void ftdi_read_bulk_callback(struct urb *urb);
706 static void ftdi_process_read(struct work_struct *work);
707 static void ftdi_set_termios(struct tty_struct *tty,
708 struct usb_serial_port *port, struct ktermios *old);
709 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file);
710 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
711 unsigned int set, unsigned int clear);
712 static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
713 unsigned int cmd, unsigned long arg);
714 static void ftdi_break_ctl(struct tty_struct *tty, int break_state);
715 static void ftdi_throttle(struct tty_struct *tty);
716 static void ftdi_unthrottle(struct tty_struct *tty);
717
718 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base);
719 static unsigned short int ftdi_232am_baud_to_divisor(int baud);
720 static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base);
721 static __u32 ftdi_232bm_baud_to_divisor(int baud);
722
723 static struct usb_serial_driver ftdi_sio_device = {
724 .driver = {
725 .owner = THIS_MODULE,
726 .name = "ftdi_sio",
727 },
728 .description = "FTDI USB Serial Device",
729 .usb_driver = &ftdi_driver ,
730 .id_table = id_table_combined,
731 .num_ports = 1,
732 .probe = ftdi_sio_probe,
733 .port_probe = ftdi_sio_port_probe,
734 .port_remove = ftdi_sio_port_remove,
735 .open = ftdi_open,
736 .close = ftdi_close,
737 .throttle = ftdi_throttle,
738 .unthrottle = ftdi_unthrottle,
739 .write = ftdi_write,
740 .write_room = ftdi_write_room,
741 .chars_in_buffer = ftdi_chars_in_buffer,
742 .read_bulk_callback = ftdi_read_bulk_callback,
743 .write_bulk_callback = ftdi_write_bulk_callback,
744 .tiocmget = ftdi_tiocmget,
745 .tiocmset = ftdi_tiocmset,
746 .ioctl = ftdi_ioctl,
747 .set_termios = ftdi_set_termios,
748 .break_ctl = ftdi_break_ctl,
749 .shutdown = ftdi_shutdown,
750 };
751
752
753 #define WDR_TIMEOUT 5000 /* default urb timeout */
754 #define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */
755
756 /* High and low are for DTR, RTS etc etc */
757 #define HIGH 1
758 #define LOW 0
759
760 /* number of outstanding urbs to prevent userspace DoS from happening */
761 #define URB_UPPER_LIMIT 42
762
763 /*
764 * ***************************************************************************
765 * Utility functions
766 * ***************************************************************************
767 */
768
769 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base)
770 {
771 unsigned short int divisor;
772 /* divisor shifted 3 bits to the left */
773 int divisor3 = base / 2 / baud;
774 if ((divisor3 & 0x7) == 7)
775 divisor3++; /* round x.7/8 up to x+1 */
776 divisor = divisor3 >> 3;
777 divisor3 &= 0x7;
778 if (divisor3 == 1)
779 divisor |= 0xc000;
780 else if (divisor3 >= 4)
781 divisor |= 0x4000;
782 else if (divisor3 != 0)
783 divisor |= 0x8000;
784 else if (divisor == 1)
785 divisor = 0; /* special case for maximum baud rate */
786 return divisor;
787 }
788
789 static unsigned short int ftdi_232am_baud_to_divisor(int baud)
790 {
791 return ftdi_232am_baud_base_to_divisor(baud, 48000000);
792 }
793
794 static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base)
795 {
796 static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
797 __u32 divisor;
798 /* divisor shifted 3 bits to the left */
799 int divisor3 = base / 2 / baud;
800 divisor = divisor3 >> 3;
801 divisor |= (__u32)divfrac[divisor3 & 0x7] << 14;
802 /* Deal with special cases for highest baud rates. */
803 if (divisor == 1)
804 divisor = 0;
805 else if (divisor == 0x4001)
806 divisor = 1;
807 return divisor;
808 }
809
810 static __u32 ftdi_232bm_baud_to_divisor(int baud)
811 {
812 return ftdi_232bm_baud_base_to_divisor(baud, 48000000);
813 }
814
815 #define set_mctrl(port, set) update_mctrl((port), (set), 0)
816 #define clear_mctrl(port, clear) update_mctrl((port), 0, (clear))
817
818 static int update_mctrl(struct usb_serial_port *port, unsigned int set,
819 unsigned int clear)
820 {
821 struct ftdi_private *priv = usb_get_serial_port_data(port);
822 char *buf;
823 unsigned urb_value;
824 int rv;
825
826 if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
827 dbg("%s - DTR|RTS not being set|cleared", __func__);
828 return 0; /* no change */
829 }
830
831 buf = kmalloc(1, GFP_NOIO);
832 if (!buf)
833 return -ENOMEM;
834
835 clear &= ~set; /* 'set' takes precedence over 'clear' */
836 urb_value = 0;
837 if (clear & TIOCM_DTR)
838 urb_value |= FTDI_SIO_SET_DTR_LOW;
839 if (clear & TIOCM_RTS)
840 urb_value |= FTDI_SIO_SET_RTS_LOW;
841 if (set & TIOCM_DTR)
842 urb_value |= FTDI_SIO_SET_DTR_HIGH;
843 if (set & TIOCM_RTS)
844 urb_value |= FTDI_SIO_SET_RTS_HIGH;
845 rv = usb_control_msg(port->serial->dev,
846 usb_sndctrlpipe(port->serial->dev, 0),
847 FTDI_SIO_SET_MODEM_CTRL_REQUEST,
848 FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
849 urb_value, priv->interface,
850 buf, 0, WDR_TIMEOUT);
851
852 kfree(buf);
853 if (rv < 0) {
854 err("%s Error from MODEM_CTRL urb: DTR %s, RTS %s",
855 __func__,
856 (set & TIOCM_DTR) ? "HIGH" :
857 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
858 (set & TIOCM_RTS) ? "HIGH" :
859 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
860 } else {
861 dbg("%s - DTR %s, RTS %s", __func__,
862 (set & TIOCM_DTR) ? "HIGH" :
863 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
864 (set & TIOCM_RTS) ? "HIGH" :
865 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
866 /* FIXME: locking on last_dtr_rts */
867 priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set;
868 }
869 return rv;
870 }
871
872
873 static __u32 get_ftdi_divisor(struct tty_struct *tty,
874 struct usb_serial_port *port)
875 { /* get_ftdi_divisor */
876 struct ftdi_private *priv = usb_get_serial_port_data(port);
877 __u32 div_value = 0;
878 int div_okay = 1;
879 int baud;
880
881 /*
882 * The logic involved in setting the baudrate can be cleanly split into
883 * 3 steps.
884 * 1. Standard baud rates are set in tty->termios->c_cflag
885 * 2. If these are not enough, you can set any speed using alt_speed as
886 * follows:
887 * - set tty->termios->c_cflag speed to B38400
888 * - set your real speed in tty->alt_speed; it gets ignored when
889 * alt_speed==0, (or)
890 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
891 * follows:
892 * flags & ASYNC_SPD_MASK == ASYNC_SPD_[HI, VHI, SHI, WARP],
893 * this just sets alt_speed to (HI: 57600, VHI: 115200,
894 * SHI: 230400, WARP: 460800)
895 * ** Steps 1, 2 are done courtesy of tty_get_baud_rate
896 * 3. You can also set baud rate by setting custom divisor as follows
897 * - set tty->termios->c_cflag speed to B38400
898 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
899 * follows:
900 * o flags & ASYNC_SPD_MASK == ASYNC_SPD_CUST
901 * o custom_divisor set to baud_base / your_new_baudrate
902 * ** Step 3 is done courtesy of code borrowed from serial.c
903 * I should really spend some time and separate + move this common
904 * code to serial.c, it is replicated in nearly every serial driver
905 * you see.
906 */
907
908 /* 1. Get the baud rate from the tty settings, this observes
909 alt_speed hack */
910
911 baud = tty_get_baud_rate(tty);
912 dbg("%s - tty_get_baud_rate reports speed %d", __func__, baud);
913
914 /* 2. Observe async-compatible custom_divisor hack, update baudrate
915 if needed */
916
917 if (baud == 38400 &&
918 ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
919 (priv->custom_divisor)) {
920 baud = priv->baud_base / priv->custom_divisor;
921 dbg("%s - custom divisor %d sets baud rate to %d",
922 __func__, priv->custom_divisor, baud);
923 }
924
925 /* 3. Convert baudrate to device-specific divisor */
926
927 if (!baud)
928 baud = 9600;
929 switch (priv->chip_type) {
930 case SIO: /* SIO chip */
931 switch (baud) {
932 case 300: div_value = ftdi_sio_b300; break;
933 case 600: div_value = ftdi_sio_b600; break;
934 case 1200: div_value = ftdi_sio_b1200; break;
935 case 2400: div_value = ftdi_sio_b2400; break;
936 case 4800: div_value = ftdi_sio_b4800; break;
937 case 9600: div_value = ftdi_sio_b9600; break;
938 case 19200: div_value = ftdi_sio_b19200; break;
939 case 38400: div_value = ftdi_sio_b38400; break;
940 case 57600: div_value = ftdi_sio_b57600; break;
941 case 115200: div_value = ftdi_sio_b115200; break;
942 } /* baud */
943 if (div_value == 0) {
944 dbg("%s - Baudrate (%d) requested is not supported",
945 __func__, baud);
946 div_value = ftdi_sio_b9600;
947 baud = 9600;
948 div_okay = 0;
949 }
950 break;
951 case FT8U232AM: /* 8U232AM chip */
952 if (baud <= 3000000) {
953 div_value = ftdi_232am_baud_to_divisor(baud);
954 } else {
955 dbg("%s - Baud rate too high!", __func__);
956 baud = 9600;
957 div_value = ftdi_232am_baud_to_divisor(9600);
958 div_okay = 0;
959 }
960 break;
961 case FT232BM: /* FT232BM chip */
962 case FT2232C: /* FT2232C chip */
963 case FT232RL:
964 if (baud <= 3000000) {
965 div_value = ftdi_232bm_baud_to_divisor(baud);
966 } else {
967 dbg("%s - Baud rate too high!", __func__);
968 div_value = ftdi_232bm_baud_to_divisor(9600);
969 div_okay = 0;
970 baud = 9600;
971 }
972 break;
973 } /* priv->chip_type */
974
975 if (div_okay) {
976 dbg("%s - Baud rate set to %d (divisor 0x%lX) on chip %s",
977 __func__, baud, (unsigned long)div_value,
978 ftdi_chip_name[priv->chip_type]);
979 }
980
981 tty_encode_baud_rate(tty, baud, baud);
982 return div_value;
983 }
984
985 static int change_speed(struct tty_struct *tty, struct usb_serial_port *port)
986 {
987 struct ftdi_private *priv = usb_get_serial_port_data(port);
988 char *buf;
989 __u16 urb_value;
990 __u16 urb_index;
991 __u32 urb_index_value;
992 int rv;
993
994 buf = kmalloc(1, GFP_NOIO);
995 if (!buf)
996 return -ENOMEM;
997
998 urb_index_value = get_ftdi_divisor(tty, port);
999 urb_value = (__u16)urb_index_value;
1000 urb_index = (__u16)(urb_index_value >> 16);
1001 if (priv->interface) { /* FT2232C */
1002 urb_index = (__u16)((urb_index << 8) | priv->interface);
1003 }
1004
1005 rv = usb_control_msg(port->serial->dev,
1006 usb_sndctrlpipe(port->serial->dev, 0),
1007 FTDI_SIO_SET_BAUDRATE_REQUEST,
1008 FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
1009 urb_value, urb_index,
1010 buf, 0, WDR_SHORT_TIMEOUT);
1011
1012 kfree(buf);
1013 return rv;
1014 }
1015
1016
1017
1018 static int get_serial_info(struct usb_serial_port *port,
1019 struct serial_struct __user *retinfo)
1020 {
1021 struct ftdi_private *priv = usb_get_serial_port_data(port);
1022 struct serial_struct tmp;
1023
1024 if (!retinfo)
1025 return -EFAULT;
1026 memset(&tmp, 0, sizeof(tmp));
1027 tmp.flags = priv->flags;
1028 tmp.baud_base = priv->baud_base;
1029 tmp.custom_divisor = priv->custom_divisor;
1030 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1031 return -EFAULT;
1032 return 0;
1033 } /* get_serial_info */
1034
1035
1036 static int set_serial_info(struct tty_struct *tty,
1037 struct usb_serial_port *port, struct serial_struct __user *newinfo)
1038 { /* set_serial_info */
1039 struct ftdi_private *priv = usb_get_serial_port_data(port);
1040 struct serial_struct new_serial;
1041 struct ftdi_private old_priv;
1042
1043 if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
1044 return -EFAULT;
1045 old_priv = *priv;
1046
1047 /* Do error checking and permission checking */
1048
1049 if (!capable(CAP_SYS_ADMIN)) {
1050 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
1051 (priv->flags & ~ASYNC_USR_MASK)))
1052 return -EPERM;
1053 priv->flags = ((priv->flags & ~ASYNC_USR_MASK) |
1054 (new_serial.flags & ASYNC_USR_MASK));
1055 priv->custom_divisor = new_serial.custom_divisor;
1056 goto check_and_exit;
1057 }
1058
1059 if ((new_serial.baud_base != priv->baud_base) &&
1060 (new_serial.baud_base < 9600))
1061 return -EINVAL;
1062
1063 /* Make the changes - these are privileged changes! */
1064
1065 priv->flags = ((priv->flags & ~ASYNC_FLAGS) |
1066 (new_serial.flags & ASYNC_FLAGS));
1067 priv->custom_divisor = new_serial.custom_divisor;
1068
1069 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1070
1071 check_and_exit:
1072 if ((old_priv.flags & ASYNC_SPD_MASK) !=
1073 (priv->flags & ASYNC_SPD_MASK)) {
1074 if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
1075 tty->alt_speed = 57600;
1076 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
1077 tty->alt_speed = 115200;
1078 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
1079 tty->alt_speed = 230400;
1080 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
1081 tty->alt_speed = 460800;
1082 else
1083 tty->alt_speed = 0;
1084 }
1085 if (((old_priv.flags & ASYNC_SPD_MASK) !=
1086 (priv->flags & ASYNC_SPD_MASK)) ||
1087 (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
1088 (old_priv.custom_divisor != priv->custom_divisor))) {
1089 change_speed(tty, port);
1090 }
1091 return 0;
1092
1093 } /* set_serial_info */
1094
1095
1096 /* Determine type of FTDI chip based on USB config and descriptor. */
1097 static void ftdi_determine_type(struct usb_serial_port *port)
1098 {
1099 struct ftdi_private *priv = usb_get_serial_port_data(port);
1100 struct usb_serial *serial = port->serial;
1101 struct usb_device *udev = serial->dev;
1102 unsigned version;
1103 unsigned interfaces;
1104
1105 /* Assume it is not the original SIO device for now. */
1106 priv->baud_base = 48000000 / 2;
1107 priv->write_offset = 0;
1108
1109 version = le16_to_cpu(udev->descriptor.bcdDevice);
1110 interfaces = udev->actconfig->desc.bNumInterfaces;
1111 dbg("%s: bcdDevice = 0x%x, bNumInterfaces = %u", __func__,
1112 version, interfaces);
1113 if (interfaces > 1) {
1114 int inter;
1115
1116 /* Multiple interfaces. Assume FT2232C. */
1117 priv->chip_type = FT2232C;
1118 /* Determine interface code. */
1119 inter = serial->interface->altsetting->desc.bInterfaceNumber;
1120 if (inter == 0)
1121 priv->interface = PIT_SIOA;
1122 else
1123 priv->interface = PIT_SIOB;
1124 /* BM-type devices have a bug where bcdDevice gets set
1125 * to 0x200 when iSerialNumber is 0. */
1126 if (version < 0x500) {
1127 dbg("%s: something fishy - bcdDevice too low for multi-interface device",
1128 __func__);
1129 }
1130 } else if (version < 0x200) {
1131 /* Old device. Assume its the original SIO. */
1132 priv->chip_type = SIO;
1133 priv->baud_base = 12000000 / 16;
1134 priv->write_offset = 1;
1135 } else if (version < 0x400) {
1136 /* Assume its an FT8U232AM (or FT8U245AM) */
1137 /* (It might be a BM because of the iSerialNumber bug,
1138 * but it will still work as an AM device.) */
1139 priv->chip_type = FT8U232AM;
1140 } else if (version < 0x600) {
1141 /* Assume its an FT232BM (or FT245BM) */
1142 priv->chip_type = FT232BM;
1143 } else {
1144 /* Assume its an FT232R */
1145 priv->chip_type = FT232RL;
1146 }
1147 info("Detected %s", ftdi_chip_name[priv->chip_type]);
1148 }
1149
1150
1151 /*
1152 * ***************************************************************************
1153 * Sysfs Attribute
1154 * ***************************************************************************
1155 */
1156
1157 static ssize_t show_latency_timer(struct device *dev,
1158 struct device_attribute *attr, char *buf)
1159 {
1160 struct usb_serial_port *port = to_usb_serial_port(dev);
1161 struct ftdi_private *priv = usb_get_serial_port_data(port);
1162 struct usb_device *udev = port->serial->dev;
1163 unsigned short latency = 0;
1164 int rv = 0;
1165
1166
1167 dbg("%s", __func__);
1168
1169 rv = usb_control_msg(udev,
1170 usb_rcvctrlpipe(udev, 0),
1171 FTDI_SIO_GET_LATENCY_TIMER_REQUEST,
1172 FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE,
1173 0, priv->interface,
1174 (char *) &latency, 1, WDR_TIMEOUT);
1175
1176 if (rv < 0) {
1177 dev_err(dev, "Unable to read latency timer: %i\n", rv);
1178 return -EIO;
1179 }
1180 return sprintf(buf, "%i\n", latency);
1181 }
1182
1183 /* Write a new value of the latency timer, in units of milliseconds. */
1184 static ssize_t store_latency_timer(struct device *dev,
1185 struct device_attribute *attr, const char *valbuf,
1186 size_t count)
1187 {
1188 struct usb_serial_port *port = to_usb_serial_port(dev);
1189 struct ftdi_private *priv = usb_get_serial_port_data(port);
1190 struct usb_device *udev = port->serial->dev;
1191 char buf[1];
1192 int v = simple_strtoul(valbuf, NULL, 10);
1193 int rv = 0;
1194
1195 dbg("%s: setting latency timer = %i", __func__, v);
1196
1197 rv = usb_control_msg(udev,
1198 usb_sndctrlpipe(udev, 0),
1199 FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
1200 FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
1201 v, priv->interface,
1202 buf, 0, WDR_TIMEOUT);
1203
1204 if (rv < 0) {
1205 dev_err(dev, "Unable to write latency timer: %i\n", rv);
1206 return -EIO;
1207 }
1208
1209 return count;
1210 }
1211
1212 /* Write an event character directly to the FTDI register. The ASCII
1213 value is in the low 8 bits, with the enable bit in the 9th bit. */
1214 static ssize_t store_event_char(struct device *dev,
1215 struct device_attribute *attr, const char *valbuf, size_t count)
1216 {
1217 struct usb_serial_port *port = to_usb_serial_port(dev);
1218 struct ftdi_private *priv = usb_get_serial_port_data(port);
1219 struct usb_device *udev = port->serial->dev;
1220 char buf[1];
1221 int v = simple_strtoul(valbuf, NULL, 10);
1222 int rv = 0;
1223
1224 dbg("%s: setting event char = %i", __func__, v);
1225
1226 rv = usb_control_msg(udev,
1227 usb_sndctrlpipe(udev, 0),
1228 FTDI_SIO_SET_EVENT_CHAR_REQUEST,
1229 FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE,
1230 v, priv->interface,
1231 buf, 0, WDR_TIMEOUT);
1232
1233 if (rv < 0) {
1234 dbg("Unable to write event character: %i", rv);
1235 return -EIO;
1236 }
1237
1238 return count;
1239 }
1240
1241 static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer,
1242 store_latency_timer);
1243 static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char);
1244
1245 static int create_sysfs_attrs(struct usb_serial_port *port)
1246 {
1247 struct ftdi_private *priv = usb_get_serial_port_data(port);
1248 int retval = 0;
1249
1250 dbg("%s", __func__);
1251
1252 /* XXX I've no idea if the original SIO supports the event_char
1253 * sysfs parameter, so I'm playing it safe. */
1254 if (priv->chip_type != SIO) {
1255 dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]);
1256 retval = device_create_file(&port->dev, &dev_attr_event_char);
1257 if ((!retval) &&
1258 (priv->chip_type == FT232BM ||
1259 priv->chip_type == FT2232C ||
1260 priv->chip_type == FT232RL)) {
1261 retval = device_create_file(&port->dev,
1262 &dev_attr_latency_timer);
1263 }
1264 }
1265 return retval;
1266 }
1267
1268 static void remove_sysfs_attrs(struct usb_serial_port *port)
1269 {
1270 struct ftdi_private *priv = usb_get_serial_port_data(port);
1271
1272 dbg("%s", __func__);
1273
1274 /* XXX see create_sysfs_attrs */
1275 if (priv->chip_type != SIO) {
1276 device_remove_file(&port->dev, &dev_attr_event_char);
1277 if (priv->chip_type == FT232BM ||
1278 priv->chip_type == FT2232C ||
1279 priv->chip_type == FT232RL) {
1280 device_remove_file(&port->dev, &dev_attr_latency_timer);
1281 }
1282 }
1283
1284 }
1285
1286 /*
1287 * ***************************************************************************
1288 * FTDI driver specific functions
1289 * ***************************************************************************
1290 */
1291
1292 /* Probe function to check for special devices */
1293 static int ftdi_sio_probe(struct usb_serial *serial,
1294 const struct usb_device_id *id)
1295 {
1296 struct ftdi_sio_quirk *quirk =
1297 (struct ftdi_sio_quirk *)id->driver_info;
1298
1299 if (quirk && quirk->probe) {
1300 int ret = quirk->probe(serial);
1301 if (ret != 0)
1302 return ret;
1303 }
1304
1305 usb_set_serial_data(serial, (void *)id->driver_info);
1306
1307 return 0;
1308 }
1309
1310 static int ftdi_sio_port_probe(struct usb_serial_port *port)
1311 {
1312 struct ftdi_private *priv;
1313 struct ftdi_sio_quirk *quirk = usb_get_serial_data(port->serial);
1314
1315
1316 dbg("%s", __func__);
1317
1318 priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL);
1319 if (!priv) {
1320 err("%s- kmalloc(%Zd) failed.", __func__,
1321 sizeof(struct ftdi_private));
1322 return -ENOMEM;
1323 }
1324
1325 spin_lock_init(&priv->rx_lock);
1326 spin_lock_init(&priv->tx_lock);
1327 init_waitqueue_head(&priv->delta_msr_wait);
1328 /* This will push the characters through immediately rather
1329 than queue a task to deliver them */
1330 priv->flags = ASYNC_LOW_LATENCY;
1331
1332 if (quirk && quirk->port_probe)
1333 quirk->port_probe(priv);
1334
1335 /* Increase the size of read buffers */
1336 kfree(port->bulk_in_buffer);
1337 port->bulk_in_buffer = kmalloc(BUFSZ, GFP_KERNEL);
1338 if (!port->bulk_in_buffer) {
1339 kfree(priv);
1340 return -ENOMEM;
1341 }
1342 if (port->read_urb) {
1343 port->read_urb->transfer_buffer = port->bulk_in_buffer;
1344 port->read_urb->transfer_buffer_length = BUFSZ;
1345 }
1346
1347 INIT_DELAYED_WORK(&priv->rx_work, ftdi_process_read);
1348 priv->port = port;
1349
1350 /* Free port's existing write urb and transfer buffer. */
1351 if (port->write_urb) {
1352 usb_free_urb(port->write_urb);
1353 port->write_urb = NULL;
1354 }
1355 kfree(port->bulk_out_buffer);
1356 port->bulk_out_buffer = NULL;
1357
1358 usb_set_serial_port_data(port, priv);
1359
1360 ftdi_determine_type(port);
1361 create_sysfs_attrs(port);
1362 return 0;
1363 }
1364
1365 /* Setup for the USB-UIRT device, which requires hardwired
1366 * baudrate (38400 gets mapped to 312500) */
1367 /* Called from usbserial:serial_probe */
1368 static void ftdi_USB_UIRT_setup(struct ftdi_private *priv)
1369 {
1370 dbg("%s", __func__);
1371
1372 priv->flags |= ASYNC_SPD_CUST;
1373 priv->custom_divisor = 77;
1374 priv->force_baud = 38400;
1375 } /* ftdi_USB_UIRT_setup */
1376
1377 /* Setup for the HE-TIRA1 device, which requires hardwired
1378 * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */
1379
1380 static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv)
1381 {
1382 dbg("%s", __func__);
1383
1384 priv->flags |= ASYNC_SPD_CUST;
1385 priv->custom_divisor = 240;
1386 priv->force_baud = 38400;
1387 priv->force_rtscts = 1;
1388 } /* ftdi_HE_TIRA1_setup */
1389
1390 /*
1391 * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko
1392 * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from
1393 * userspace using openocd.
1394 */
1395 static int ftdi_jtag_probe(struct usb_serial *serial)
1396 {
1397 struct usb_device *udev = serial->dev;
1398 struct usb_interface *interface = serial->interface;
1399
1400 dbg("%s", __func__);
1401
1402 if (interface == udev->actconfig->interface[0]) {
1403 info("Ignoring serial port reserved for JTAG");
1404 return -ENODEV;
1405 }
1406
1407 return 0;
1408 }
1409
1410 /*
1411 * The Matrix Orbital VK204-25-USB has an invalid IN endpoint.
1412 * We have to correct it if we want to read from it.
1413 */
1414 static int ftdi_mtxorb_hack_setup(struct usb_serial *serial)
1415 {
1416 struct usb_host_endpoint *ep = serial->dev->ep_in[1];
1417 struct usb_endpoint_descriptor *ep_desc = &ep->desc;
1418
1419 if (ep->enabled && ep_desc->wMaxPacketSize == 0) {
1420 ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
1421 info("Fixing invalid wMaxPacketSize on read pipe");
1422 }
1423
1424 return 0;
1425 }
1426
1427 /* ftdi_shutdown is called from usbserial:usb_serial_disconnect
1428 * it is called when the usb device is disconnected
1429 *
1430 * usbserial:usb_serial_disconnect
1431 * calls __serial_close for each open of the port
1432 * shutdown is called then (ie ftdi_shutdown)
1433 */
1434 static void ftdi_shutdown(struct usb_serial *serial)
1435 {
1436 dbg("%s", __func__);
1437 }
1438
1439 static int ftdi_sio_port_remove(struct usb_serial_port *port)
1440 {
1441 struct ftdi_private *priv = usb_get_serial_port_data(port);
1442
1443 dbg("%s", __func__);
1444
1445 remove_sysfs_attrs(port);
1446
1447 /* all open ports are closed at this point
1448 * (by usbserial.c:__serial_close, which calls ftdi_close)
1449 */
1450
1451 if (priv) {
1452 usb_set_serial_port_data(port, NULL);
1453 kfree(priv);
1454 }
1455
1456 return 0;
1457 }
1458
1459 static int ftdi_open(struct tty_struct *tty,
1460 struct usb_serial_port *port, struct file *filp)
1461 { /* ftdi_open */
1462 struct usb_device *dev = port->serial->dev;
1463 struct ftdi_private *priv = usb_get_serial_port_data(port);
1464 unsigned long flags;
1465
1466 int result = 0;
1467 char buf[1]; /* Needed for the usb_control_msg I think */
1468
1469 dbg("%s", __func__);
1470
1471 spin_lock_irqsave(&priv->tx_lock, flags);
1472 priv->tx_bytes = 0;
1473 spin_unlock_irqrestore(&priv->tx_lock, flags);
1474 spin_lock_irqsave(&priv->rx_lock, flags);
1475 priv->rx_bytes = 0;
1476 spin_unlock_irqrestore(&priv->rx_lock, flags);
1477
1478 if (tty)
1479 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1480
1481 /* No error checking for this (will get errors later anyway) */
1482 /* See ftdi_sio.h for description of what is reset */
1483 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1484 FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
1485 FTDI_SIO_RESET_SIO,
1486 priv->interface, buf, 0, WDR_TIMEOUT);
1487
1488 /* Termios defaults are set by usb_serial_init. We don't change
1489 port->tty->termios - this would loose speed settings, etc.
1490 This is same behaviour as serial.c/rs_open() - Kuba */
1491
1492 /* ftdi_set_termios will send usb control messages */
1493 if (tty)
1494 ftdi_set_termios(tty, port, tty->termios);
1495
1496 /* FIXME: Flow control might be enabled, so it should be checked -
1497 we have no control of defaults! */
1498 /* Turn on RTS and DTR since we are not flow controlling by default */
1499 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1500
1501 /* Not throttled */
1502 spin_lock_irqsave(&priv->rx_lock, flags);
1503 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
1504 spin_unlock_irqrestore(&priv->rx_lock, flags);
1505
1506 /* Start reading from the device */
1507 priv->rx_processed = 0;
1508 usb_fill_bulk_urb(port->read_urb, dev,
1509 usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress),
1510 port->read_urb->transfer_buffer,
1511 port->read_urb->transfer_buffer_length,
1512 ftdi_read_bulk_callback, port);
1513 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
1514 if (result)
1515 err("%s - failed submitting read urb, error %d",
1516 __func__, result);
1517
1518
1519 return result;
1520 } /* ftdi_open */
1521
1522
1523
1524 /*
1525 * usbserial:__serial_close only calls ftdi_close if the point is open
1526 *
1527 * This only gets called when it is the last close
1528 *
1529 *
1530 */
1531
1532 static void ftdi_close(struct tty_struct *tty,
1533 struct usb_serial_port *port, struct file *filp)
1534 { /* ftdi_close */
1535 unsigned int c_cflag = tty->termios->c_cflag;
1536 struct ftdi_private *priv = usb_get_serial_port_data(port);
1537 char buf[1];
1538
1539 dbg("%s", __func__);
1540
1541 mutex_lock(&port->serial->disc_mutex);
1542 if (c_cflag & HUPCL && !port->serial->disconnected) {
1543 /* Disable flow control */
1544 if (usb_control_msg(port->serial->dev,
1545 usb_sndctrlpipe(port->serial->dev, 0),
1546 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
1547 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
1548 0, priv->interface, buf, 0,
1549 WDR_TIMEOUT) < 0) {
1550 err("error from flowcontrol urb");
1551 }
1552
1553 /* drop RTS and DTR */
1554 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1555 } /* Note change no line if hupcl is off */
1556 mutex_unlock(&port->serial->disc_mutex);
1557
1558 /* cancel any scheduled reading */
1559 cancel_delayed_work(&priv->rx_work);
1560 flush_scheduled_work();
1561
1562 /* shutdown our bulk read */
1563 usb_kill_urb(port->read_urb);
1564 } /* ftdi_close */
1565
1566
1567
1568 /* The SIO requires the first byte to have:
1569 * B0 1
1570 * B1 0
1571 * B2..7 length of message excluding byte 0
1572 *
1573 * The new devices do not require this byte
1574 */
1575 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
1576 const unsigned char *buf, int count)
1577 { /* ftdi_write */
1578 struct ftdi_private *priv = usb_get_serial_port_data(port);
1579 struct urb *urb;
1580 unsigned char *buffer;
1581 int data_offset ; /* will be 1 for the SIO and 0 otherwise */
1582 int status;
1583 int transfer_size;
1584 unsigned long flags;
1585
1586 dbg("%s port %d, %d bytes", __func__, port->number, count);
1587
1588 if (count == 0) {
1589 dbg("write request of 0 bytes");
1590 return 0;
1591 }
1592 spin_lock_irqsave(&priv->tx_lock, flags);
1593 if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) {
1594 spin_unlock_irqrestore(&priv->tx_lock, flags);
1595 dbg("%s - write limit hit\n", __func__);
1596 return 0;
1597 }
1598 priv->tx_outstanding_urbs++;
1599 spin_unlock_irqrestore(&priv->tx_lock, flags);
1600
1601 data_offset = priv->write_offset;
1602 dbg("data_offset set to %d", data_offset);
1603
1604 /* Determine total transfer size */
1605 transfer_size = count;
1606 if (data_offset > 0) {
1607 /* Original sio needs control bytes too... */
1608 transfer_size += (data_offset *
1609 ((count + (PKTSZ - 1 - data_offset)) /
1610 (PKTSZ - data_offset)));
1611 }
1612
1613 buffer = kmalloc(transfer_size, GFP_ATOMIC);
1614 if (!buffer) {
1615 err("%s ran out of kernel memory for urb ...", __func__);
1616 count = -ENOMEM;
1617 goto error_no_buffer;
1618 }
1619
1620 urb = usb_alloc_urb(0, GFP_ATOMIC);
1621 if (!urb) {
1622 err("%s - no more free urbs", __func__);
1623 count = -ENOMEM;
1624 goto error_no_urb;
1625 }
1626
1627 /* Copy data */
1628 if (data_offset > 0) {
1629 /* Original sio requires control byte at start of
1630 each packet. */
1631 int user_pktsz = PKTSZ - data_offset;
1632 int todo = count;
1633 unsigned char *first_byte = buffer;
1634 const unsigned char *current_position = buf;
1635
1636 while (todo > 0) {
1637 if (user_pktsz > todo)
1638 user_pktsz = todo;
1639 /* Write the control byte at the front of the packet*/
1640 *first_byte = 1 | ((user_pktsz) << 2);
1641 /* Copy data for packet */
1642 memcpy(first_byte + data_offset,
1643 current_position, user_pktsz);
1644 first_byte += user_pktsz + data_offset;
1645 current_position += user_pktsz;
1646 todo -= user_pktsz;
1647 }
1648 } else {
1649 /* No control byte required. */
1650 /* Copy in the data to send */
1651 memcpy(buffer, buf, count);
1652 }
1653
1654 usb_serial_debug_data(debug, &port->dev, __func__,
1655 transfer_size, buffer);
1656
1657 /* fill the buffer and send it */
1658 usb_fill_bulk_urb(urb, port->serial->dev,
1659 usb_sndbulkpipe(port->serial->dev,
1660 port->bulk_out_endpointAddress),
1661 buffer, transfer_size,
1662 ftdi_write_bulk_callback, port);
1663
1664 status = usb_submit_urb(urb, GFP_ATOMIC);
1665 if (status) {
1666 err("%s - failed submitting write urb, error %d",
1667 __func__, status);
1668 count = status;
1669 goto error;
1670 } else {
1671 spin_lock_irqsave(&priv->tx_lock, flags);
1672 priv->tx_outstanding_bytes += count;
1673 priv->tx_bytes += count;
1674 spin_unlock_irqrestore(&priv->tx_lock, flags);
1675 }
1676
1677 /* we are done with this urb, so let the host driver
1678 * really free it when it is finished with it */
1679 usb_free_urb(urb);
1680
1681 dbg("%s write returning: %d", __func__, count);
1682 return count;
1683 error:
1684 usb_free_urb(urb);
1685 error_no_urb:
1686 kfree(buffer);
1687 error_no_buffer:
1688 spin_lock_irqsave(&priv->tx_lock, flags);
1689 priv->tx_outstanding_urbs--;
1690 spin_unlock_irqrestore(&priv->tx_lock, flags);
1691 return count;
1692 } /* ftdi_write */
1693
1694
1695 /* This function may get called when the device is closed */
1696
1697 static void ftdi_write_bulk_callback(struct urb *urb)
1698 {
1699 unsigned long flags;
1700 struct usb_serial_port *port = urb->context;
1701 struct ftdi_private *priv;
1702 int data_offset; /* will be 1 for the SIO and 0 otherwise */
1703 unsigned long countback;
1704 int status = urb->status;
1705
1706 /* free up the transfer buffer, as usb_free_urb() does not do this */
1707 kfree(urb->transfer_buffer);
1708
1709 dbg("%s - port %d", __func__, port->number);
1710
1711 if (status) {
1712 dbg("nonzero write bulk status received: %d", status);
1713 return;
1714 }
1715
1716 priv = usb_get_serial_port_data(port);
1717 if (!priv) {
1718 dbg("%s - bad port private data pointer - exiting", __func__);
1719 return;
1720 }
1721 /* account for transferred data */
1722 countback = urb->actual_length;
1723 data_offset = priv->write_offset;
1724 if (data_offset > 0) {
1725 /* Subtract the control bytes */
1726 countback -= (data_offset * DIV_ROUND_UP(countback, PKTSZ));
1727 }
1728 spin_lock_irqsave(&priv->tx_lock, flags);
1729 --priv->tx_outstanding_urbs;
1730 priv->tx_outstanding_bytes -= countback;
1731 spin_unlock_irqrestore(&priv->tx_lock, flags);
1732
1733 usb_serial_port_softint(port);
1734 } /* ftdi_write_bulk_callback */
1735
1736
1737 static int ftdi_write_room(struct tty_struct *tty)
1738 {
1739 struct usb_serial_port *port = tty->driver_data;
1740 struct ftdi_private *priv = usb_get_serial_port_data(port);
1741 int room;
1742 unsigned long flags;
1743
1744 dbg("%s - port %d", __func__, port->number);
1745
1746 spin_lock_irqsave(&priv->tx_lock, flags);
1747 if (priv->tx_outstanding_urbs < URB_UPPER_LIMIT) {
1748 /*
1749 * We really can take anything the user throws at us
1750 * but let's pick a nice big number to tell the tty
1751 * layer that we have lots of free space
1752 */
1753 room = 2048;
1754 } else {
1755 room = 0;
1756 }
1757 spin_unlock_irqrestore(&priv->tx_lock, flags);
1758 return room;
1759 }
1760
1761 static int ftdi_chars_in_buffer(struct tty_struct *tty)
1762 {
1763 struct usb_serial_port *port = tty->driver_data;
1764 struct ftdi_private *priv = usb_get_serial_port_data(port);
1765 int buffered;
1766 unsigned long flags;
1767
1768 dbg("%s - port %d", __func__, port->number);
1769
1770 spin_lock_irqsave(&priv->tx_lock, flags);
1771 buffered = (int)priv->tx_outstanding_bytes;
1772 spin_unlock_irqrestore(&priv->tx_lock, flags);
1773 if (buffered < 0) {
1774 err("%s outstanding tx bytes is negative!", __func__);
1775 buffered = 0;
1776 }
1777 return buffered;
1778 }
1779
1780 static void ftdi_read_bulk_callback(struct urb *urb)
1781 {
1782 struct usb_serial_port *port = urb->context;
1783 struct tty_struct *tty;
1784 struct ftdi_private *priv;
1785 unsigned long countread;
1786 unsigned long flags;
1787 int status = urb->status;
1788
1789 if (urb->number_of_packets > 0) {
1790 err("%s transfer_buffer_length %d actual_length %d number of packets %d",
1791 __func__,
1792 urb->transfer_buffer_length,
1793 urb->actual_length, urb->number_of_packets);
1794 err("%s transfer_flags %x ", __func__, urb->transfer_flags);
1795 }
1796
1797 dbg("%s - port %d", __func__, port->number);
1798
1799 if (port->port.count <= 0)
1800 return;
1801
1802 tty = port->port.tty;
1803 if (!tty) {
1804 dbg("%s - bad tty pointer - exiting", __func__);
1805 return;
1806 }
1807
1808 priv = usb_get_serial_port_data(port);
1809 if (!priv) {
1810 dbg("%s - bad port private data pointer - exiting", __func__);
1811 return;
1812 }
1813
1814 if (urb != port->read_urb)
1815 err("%s - Not my urb!", __func__);
1816
1817 if (status) {
1818 /* This will happen at close every time so it is a dbg not an
1819 err */
1820 dbg("(this is ok on close) nonzero read bulk status received: %d", status);
1821 return;
1822 }
1823
1824 /* count data bytes, but not status bytes */
1825 countread = urb->actual_length;
1826 countread -= 2 * DIV_ROUND_UP(countread, PKTSZ);
1827 spin_lock_irqsave(&priv->rx_lock, flags);
1828 priv->rx_bytes += countread;
1829 spin_unlock_irqrestore(&priv->rx_lock, flags);
1830
1831 ftdi_process_read(&priv->rx_work.work);
1832
1833 } /* ftdi_read_bulk_callback */
1834
1835
1836 static void ftdi_process_read(struct work_struct *work)
1837 { /* ftdi_process_read */
1838 struct ftdi_private *priv =
1839 container_of(work, struct ftdi_private, rx_work.work);
1840 struct usb_serial_port *port = priv->port;
1841 struct urb *urb;
1842 struct tty_struct *tty;
1843 char error_flag;
1844 unsigned char *data;
1845
1846 int i;
1847 int result;
1848 int need_flip;
1849 int packet_offset;
1850 unsigned long flags;
1851
1852 dbg("%s - port %d", __func__, port->number);
1853
1854 if (port->port.count <= 0)
1855 return;
1856
1857 tty = port->port.tty;
1858 if (!tty) {
1859 dbg("%s - bad tty pointer - exiting", __func__);
1860 return;
1861 }
1862
1863 priv = usb_get_serial_port_data(port);
1864 if (!priv) {
1865 dbg("%s - bad port private data pointer - exiting", __func__);
1866 return;
1867 }
1868
1869 urb = port->read_urb;
1870 if (!urb) {
1871 dbg("%s - bad read_urb pointer - exiting", __func__);
1872 return;
1873 }
1874
1875 data = urb->transfer_buffer;
1876
1877 if (priv->rx_processed) {
1878 dbg("%s - already processed: %d bytes, %d remain", __func__,
1879 priv->rx_processed,
1880 urb->actual_length - priv->rx_processed);
1881 } else {
1882 /* The first two bytes of every read packet are status */
1883 if (urb->actual_length > 2)
1884 usb_serial_debug_data(debug, &port->dev, __func__,
1885 urb->actual_length, data);
1886 else
1887 dbg("Status only: %03oo %03oo", data[0], data[1]);
1888 }
1889
1890
1891 /* TO DO -- check for hung up line and handle appropriately: */
1892 /* send hangup */
1893 /* See acm.c - you do a tty_hangup - eg tty_hangup(tty) */
1894 /* if CD is dropped and the line is not CLOCAL then we should hangup */
1895
1896 need_flip = 0;
1897 for (packet_offset = priv->rx_processed;
1898 packet_offset < urb->actual_length; packet_offset += PKTSZ) {
1899 int length;
1900
1901 /* Compare new line status to the old one, signal if different/
1902 N.B. packet may be processed more than once, but differences
1903 are only processed once. */
1904 if (priv != NULL) {
1905 char new_status = data[packet_offset + 0] &
1906 FTDI_STATUS_B0_MASK;
1907 if (new_status != priv->prev_status) {
1908 priv->diff_status |=
1909 new_status ^ priv->prev_status;
1910 wake_up_interruptible(&priv->delta_msr_wait);
1911 priv->prev_status = new_status;
1912 }
1913 }
1914
1915 length = min(PKTSZ, urb->actual_length-packet_offset)-2;
1916 if (length < 0) {
1917 err("%s - bad packet length: %d", __func__, length+2);
1918 length = 0;
1919 }
1920
1921 if (priv->rx_flags & THROTTLED) {
1922 dbg("%s - throttled", __func__);
1923 break;
1924 }
1925 if (tty_buffer_request_room(tty, length) < length) {
1926 /* break out & wait for throttling/unthrottling to
1927 happen */
1928 dbg("%s - receive room low", __func__);
1929 break;
1930 }
1931
1932 /* Handle errors and break */
1933 error_flag = TTY_NORMAL;
1934 /* Although the device uses a bitmask and hence can have
1935 multiple errors on a packet - the order here sets the
1936 priority the error is returned to the tty layer */
1937
1938 if (data[packet_offset+1] & FTDI_RS_OE) {
1939 error_flag = TTY_OVERRUN;
1940 dbg("OVERRRUN error");
1941 }
1942 if (data[packet_offset+1] & FTDI_RS_BI) {
1943 error_flag = TTY_BREAK;
1944 dbg("BREAK received");
1945 }
1946 if (data[packet_offset+1] & FTDI_RS_PE) {
1947 error_flag = TTY_PARITY;
1948 dbg("PARITY error");
1949 }
1950 if (data[packet_offset+1] & FTDI_RS_FE) {
1951 error_flag = TTY_FRAME;
1952 dbg("FRAMING error");
1953 }
1954 if (length > 0) {
1955 for (i = 2; i < length+2; i++) {
1956 /* Note that the error flag is duplicated for
1957 every character received since we don't know
1958 which character it applied to */
1959 tty_insert_flip_char(tty,
1960 data[packet_offset + i], error_flag);
1961 }
1962 need_flip = 1;
1963 }
1964
1965 #ifdef NOT_CORRECT_BUT_KEEPING_IT_FOR_NOW
1966 /* if a parity error is detected you get status packets forever
1967 until a character is sent without a parity error.
1968 This doesn't work well since the application receives a
1969 never ending stream of bad data - even though new data
1970 hasn't been sent. Therefore I (bill) have taken this out.
1971 However - this might make sense for framing errors and so on
1972 so I am leaving the code in for now.
1973 */
1974 else {
1975 if (error_flag != TTY_NORMAL) {
1976 dbg("error_flag is not normal");
1977 /* In this case it is just status - if that is
1978 an error send a bad character */
1979 if (tty->flip.count >= TTY_FLIPBUF_SIZE)
1980 tty_flip_buffer_push(tty);
1981 tty_insert_flip_char(tty, 0xff, error_flag);
1982 need_flip = 1;
1983 }
1984 }
1985 #endif
1986 } /* "for(packet_offset=0..." */
1987
1988 /* Low latency */
1989 if (need_flip)
1990 tty_flip_buffer_push(tty);
1991
1992 if (packet_offset < urb->actual_length) {
1993 /* not completely processed - record progress */
1994 priv->rx_processed = packet_offset;
1995 dbg("%s - incomplete, %d bytes processed, %d remain",
1996 __func__, packet_offset,
1997 urb->actual_length - packet_offset);
1998 /* check if we were throttled while processing */
1999 spin_lock_irqsave(&priv->rx_lock, flags);
2000 if (priv->rx_flags & THROTTLED) {
2001 priv->rx_flags |= ACTUALLY_THROTTLED;
2002 spin_unlock_irqrestore(&priv->rx_lock, flags);
2003 dbg("%s - deferring remainder until unthrottled",
2004 __func__);
2005 return;
2006 }
2007 spin_unlock_irqrestore(&priv->rx_lock, flags);
2008 /* if the port is closed stop trying to read */
2009 if (port->port.count > 0)
2010 /* delay processing of remainder */
2011 schedule_delayed_work(&priv->rx_work, 1);
2012 else
2013 dbg("%s - port is closed", __func__);
2014 return;
2015 }
2016
2017 /* urb is completely processed */
2018 priv->rx_processed = 0;
2019
2020 /* if the port is closed stop trying to read */
2021 if (port->port.count > 0) {
2022 /* Continue trying to always read */
2023 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
2024 usb_rcvbulkpipe(port->serial->dev,
2025 port->bulk_in_endpointAddress),
2026 port->read_urb->transfer_buffer,
2027 port->read_urb->transfer_buffer_length,
2028 ftdi_read_bulk_callback, port);
2029
2030 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
2031 if (result)
2032 err("%s - failed resubmitting read urb, error %d",
2033 __func__, result);
2034 }
2035 } /* ftdi_process_read */
2036
2037
2038 static void ftdi_break_ctl(struct tty_struct *tty, int break_state)
2039 {
2040 struct usb_serial_port *port = tty->driver_data;
2041 struct ftdi_private *priv = usb_get_serial_port_data(port);
2042 __u16 urb_value = 0;
2043 char buf[1];
2044
2045 /* break_state = -1 to turn on break, and 0 to turn off break */
2046 /* see drivers/char/tty_io.c to see it used */
2047 /* last_set_data_urb_value NEVER has the break bit set in it */
2048
2049 if (break_state)
2050 urb_value = priv->last_set_data_urb_value | FTDI_SIO_SET_BREAK;
2051 else
2052 urb_value = priv->last_set_data_urb_value;
2053
2054 if (usb_control_msg(port->serial->dev,
2055 usb_sndctrlpipe(port->serial->dev, 0),
2056 FTDI_SIO_SET_DATA_REQUEST,
2057 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2058 urb_value , priv->interface,
2059 buf, 0, WDR_TIMEOUT) < 0) {
2060 err("%s FAILED to enable/disable break state (state was %d)",
2061 __func__, break_state);
2062 }
2063
2064 dbg("%s break state is %d - urb is %d", __func__,
2065 break_state, urb_value);
2066
2067 }
2068
2069
2070 /* old_termios contains the original termios settings and tty->termios contains
2071 * the new setting to be used
2072 * WARNING: set_termios calls this with old_termios in kernel space
2073 */
2074
2075 static void ftdi_set_termios(struct tty_struct *tty,
2076 struct usb_serial_port *port, struct ktermios *old_termios)
2077 { /* ftdi_termios */
2078 struct usb_device *dev = port->serial->dev;
2079 struct ftdi_private *priv = usb_get_serial_port_data(port);
2080 struct ktermios *termios = tty->termios;
2081 unsigned int cflag = termios->c_cflag;
2082 __u16 urb_value; /* will hold the new flags */
2083 char buf[1]; /* Perhaps I should dynamically alloc this? */
2084
2085 /* Added for xon/xoff support */
2086 unsigned int iflag = termios->c_iflag;
2087 unsigned char vstop;
2088 unsigned char vstart;
2089
2090 dbg("%s", __func__);
2091
2092 /* Force baud rate if this device requires it, unless it is set to
2093 B0. */
2094 if (priv->force_baud && ((termios->c_cflag & CBAUD) != B0)) {
2095 dbg("%s: forcing baud rate for this device", __func__);
2096 tty_encode_baud_rate(tty, priv->force_baud,
2097 priv->force_baud);
2098 }
2099
2100 /* Force RTS-CTS if this device requires it. */
2101 if (priv->force_rtscts) {
2102 dbg("%s: forcing rtscts for this device", __func__);
2103 termios->c_cflag |= CRTSCTS;
2104 }
2105
2106 cflag = termios->c_cflag;
2107
2108 /* FIXME -For this cut I don't care if the line is really changing or
2109 not - so just do the change regardless - should be able to
2110 compare old_termios and tty->termios */
2111 /* NOTE These routines can get interrupted by
2112 ftdi_sio_read_bulk_callback - need to examine what this means -
2113 don't see any problems yet */
2114
2115 /* Set number of data bits, parity, stop bits */
2116
2117 termios->c_cflag &= ~CMSPAR;
2118
2119 urb_value = 0;
2120 urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 :
2121 FTDI_SIO_SET_DATA_STOP_BITS_1);
2122 urb_value |= (cflag & PARENB ?
2123 (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD :
2124 FTDI_SIO_SET_DATA_PARITY_EVEN) :
2125 FTDI_SIO_SET_DATA_PARITY_NONE);
2126 if (cflag & CSIZE) {
2127 switch (cflag & CSIZE) {
2128 case CS5: urb_value |= 5; dbg("Setting CS5"); break;
2129 case CS6: urb_value |= 6; dbg("Setting CS6"); break;
2130 case CS7: urb_value |= 7; dbg("Setting CS7"); break;
2131 case CS8: urb_value |= 8; dbg("Setting CS8"); break;
2132 default:
2133 err("CSIZE was set but not CS5-CS8");
2134 }
2135 }
2136
2137 /* This is needed by the break command since it uses the same command
2138 - but is or'ed with this value */
2139 priv->last_set_data_urb_value = urb_value;
2140
2141 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2142 FTDI_SIO_SET_DATA_REQUEST,
2143 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2144 urb_value , priv->interface,
2145 buf, 0, WDR_SHORT_TIMEOUT) < 0) {
2146 err("%s FAILED to set databits/stopbits/parity", __func__);
2147 }
2148
2149 /* Now do the baudrate */
2150 if ((cflag & CBAUD) == B0) {
2151 /* Disable flow control */
2152 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2153 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2154 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2155 0, priv->interface,
2156 buf, 0, WDR_TIMEOUT) < 0) {
2157 err("%s error from disable flowcontrol urb", __func__);
2158 }
2159 /* Drop RTS and DTR */
2160 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2161 } else {
2162 /* set the baudrate determined before */
2163 if (change_speed(tty, port))
2164 err("%s urb failed to set baudrate", __func__);
2165 /* Ensure RTS and DTR are raised when baudrate changed from 0 */
2166 if (!old_termios || (old_termios->c_cflag & CBAUD) == B0)
2167 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2168 }
2169
2170 /* Set flow control */
2171 /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */
2172 if (cflag & CRTSCTS) {
2173 dbg("%s Setting to CRTSCTS flow control", __func__);
2174 if (usb_control_msg(dev,
2175 usb_sndctrlpipe(dev, 0),
2176 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2177 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2178 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface),
2179 buf, 0, WDR_TIMEOUT) < 0) {
2180 err("urb failed to set to rts/cts flow control");
2181 }
2182
2183 } else {
2184 /*
2185 * Xon/Xoff code
2186 *
2187 * Check the IXOFF status in the iflag component of the
2188 * termios structure. If IXOFF is not set, the pre-xon/xoff
2189 * code is executed.
2190 */
2191 if (iflag & IXOFF) {
2192 dbg("%s request to enable xonxoff iflag=%04x",
2193 __func__, iflag);
2194 /* Try to enable the XON/XOFF on the ftdi_sio
2195 * Set the vstart and vstop -- could have been done up
2196 * above where a lot of other dereferencing is done but
2197 * that would be very inefficient as vstart and vstop
2198 * are not always needed.
2199 */
2200 vstart = termios->c_cc[VSTART];
2201 vstop = termios->c_cc[VSTOP];
2202 urb_value = (vstop << 8) | (vstart);
2203
2204 if (usb_control_msg(dev,
2205 usb_sndctrlpipe(dev, 0),
2206 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2207 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2208 urb_value , (FTDI_SIO_XON_XOFF_HS
2209 | priv->interface),
2210 buf, 0, WDR_TIMEOUT) < 0) {
2211 err("urb failed to set to xon/xoff flow control");
2212 }
2213 } else {
2214 /* else clause to only run if cflag ! CRTSCTS and iflag
2215 * ! XOFF. CHECKME Assuming XON/XOFF handled by tty
2216 * stack - not by device */
2217 dbg("%s Turning off hardware flow control", __func__);
2218 if (usb_control_msg(dev,
2219 usb_sndctrlpipe(dev, 0),
2220 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2221 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2222 0, priv->interface,
2223 buf, 0, WDR_TIMEOUT) < 0) {
2224 err("urb failed to clear flow control");
2225 }
2226 }
2227
2228 }
2229 return;
2230 }
2231
2232 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
2233 {
2234 struct usb_serial_port *port = tty->driver_data;
2235 struct ftdi_private *priv = usb_get_serial_port_data(port);
2236 unsigned char buf[2];
2237 int ret;
2238
2239 dbg("%s TIOCMGET", __func__);
2240 switch (priv->chip_type) {
2241 case SIO:
2242 /* Request the status from the device */
2243 ret = usb_control_msg(port->serial->dev,
2244 usb_rcvctrlpipe(port->serial->dev, 0),
2245 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2246 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2247 0, 0,
2248 buf, 1, WDR_TIMEOUT);
2249 if (ret < 0) {
2250 err("%s Could not get modem status of device - err: %d", __func__,
2251 ret);
2252 return ret;
2253 }
2254 break;
2255 case FT8U232AM:
2256 case FT232BM:
2257 case FT2232C:
2258 case FT232RL:
2259 /* the 8U232AM returns a two byte value (the sio is a 1 byte
2260 value) - in the same format as the data returned from the in
2261 point */
2262 ret = usb_control_msg(port->serial->dev,
2263 usb_rcvctrlpipe(port->serial->dev, 0),
2264 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2265 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2266 0, priv->interface,
2267 buf, 2, WDR_TIMEOUT);
2268 if (ret < 0) {
2269 err("%s Could not get modem status of device - err: %d", __func__,
2270 ret);
2271 return ret;
2272 }
2273 break;
2274 default:
2275 return -EFAULT;
2276 break;
2277 }
2278
2279 return (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
2280 (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) |
2281 (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) |
2282 (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0) |
2283 priv->last_dtr_rts;
2284 }
2285
2286 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
2287 unsigned int set, unsigned int clear)
2288 {
2289 struct usb_serial_port *port = tty->driver_data;
2290 dbg("%s TIOCMSET", __func__);
2291 return update_mctrl(port, set, clear);
2292 }
2293
2294
2295 static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
2296 unsigned int cmd, unsigned long arg)
2297 {
2298 struct usb_serial_port *port = tty->driver_data;
2299 struct ftdi_private *priv = usb_get_serial_port_data(port);
2300
2301 dbg("%s cmd 0x%04x", __func__, cmd);
2302
2303 /* Based on code from acm.c and others */
2304 switch (cmd) {
2305
2306 case TIOCGSERIAL: /* gets serial port data */
2307 return get_serial_info(port,
2308 (struct serial_struct __user *) arg);
2309
2310 case TIOCSSERIAL: /* sets serial port data */
2311 return set_serial_info(tty, port,
2312 (struct serial_struct __user *) arg);
2313
2314 /*
2315 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
2316 * - mask passed in arg for lines of interest
2317 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
2318 * Caller should use TIOCGICOUNT to see which one it was.
2319 *
2320 * This code is borrowed from linux/drivers/char/serial.c
2321 */
2322 case TIOCMIWAIT:
2323 while (priv != NULL) {
2324 interruptible_sleep_on(&priv->delta_msr_wait);
2325 /* see if a signal did it */
2326 if (signal_pending(current))
2327 return -ERESTARTSYS;
2328 else {
2329 char diff = priv->diff_status;
2330
2331 if (diff == 0)
2332 return -EIO; /* no change => error */
2333
2334 /* Consume all events */
2335 priv->diff_status = 0;
2336
2337 /* Return 0 if caller wanted to know about
2338 these bits */
2339 if (((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) ||
2340 ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) ||
2341 ((arg & TIOCM_CD) && (diff & FTDI_RS0_RLSD)) ||
2342 ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS))) {
2343 return 0;
2344 }
2345 /*
2346 * Otherwise caller can't care less about what
2347 * happened,and so we continue to wait for more
2348 * events.
2349 */
2350 }
2351 }
2352 return 0;
2353 default:
2354 break;
2355 }
2356 /* This is not necessarily an error - turns out the higher layers
2357 * will do some ioctls themselves (see comment above)
2358 */
2359 dbg("%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h", __func__, cmd);
2360 return -ENOIOCTLCMD;
2361 }
2362
2363 static void ftdi_throttle(struct tty_struct *tty)
2364 {
2365 struct usb_serial_port *port = tty->driver_data;
2366 struct ftdi_private *priv = usb_get_serial_port_data(port);
2367 unsigned long flags;
2368
2369 dbg("%s - port %d", __func__, port->number);
2370
2371 spin_lock_irqsave(&priv->rx_lock, flags);
2372 priv->rx_flags |= THROTTLED;
2373 spin_unlock_irqrestore(&priv->rx_lock, flags);
2374 }
2375
2376
2377 static void ftdi_unthrottle(struct tty_struct *tty)
2378 {
2379 struct usb_serial_port *port = tty->driver_data;
2380 struct ftdi_private *priv = usb_get_serial_port_data(port);
2381 int actually_throttled;
2382 unsigned long flags;
2383
2384 dbg("%s - port %d", __func__, port->number);
2385
2386 spin_lock_irqsave(&priv->rx_lock, flags);
2387 actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED;
2388 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
2389 spin_unlock_irqrestore(&priv->rx_lock, flags);
2390
2391 if (actually_throttled)
2392 schedule_delayed_work(&priv->rx_work, 0);
2393 }
2394
2395 static int __init ftdi_init(void)
2396 {
2397 int retval;
2398
2399 dbg("%s", __func__);
2400 if (vendor > 0 && product > 0) {
2401 /* Add user specified VID/PID to reserved element of table. */
2402 int i;
2403 for (i = 0; id_table_combined[i].idVendor; i++)
2404 ;
2405 id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
2406 id_table_combined[i].idVendor = vendor;
2407 id_table_combined[i].idProduct = product;
2408 }
2409 retval = usb_serial_register(&ftdi_sio_device);
2410 if (retval)
2411 goto failed_sio_register;
2412 retval = usb_register(&ftdi_driver);
2413 if (retval)
2414 goto failed_usb_register;
2415
2416 info(DRIVER_VERSION ":" DRIVER_DESC);
2417 return 0;
2418 failed_usb_register:
2419 usb_serial_deregister(&ftdi_sio_device);
2420 failed_sio_register:
2421 return retval;
2422 }
2423
2424
2425 static void __exit ftdi_exit(void)
2426 {
2427
2428 dbg("%s", __func__);
2429
2430 usb_deregister(&ftdi_driver);
2431 usb_serial_deregister(&ftdi_sio_device);
2432
2433 }
2434
2435
2436 module_init(ftdi_init);
2437 module_exit(ftdi_exit);
2438
2439 MODULE_AUTHOR(DRIVER_AUTHOR);
2440 MODULE_DESCRIPTION(DRIVER_DESC);
2441 MODULE_LICENSE("GPL");
2442
2443 module_param(debug, bool, S_IRUGO | S_IWUSR);
2444 MODULE_PARM_DESC(debug, "Debug enabled or not");
2445 module_param(vendor, ushort, 0);
2446 MODULE_PARM_DESC(vendor, "User specified vendor ID (default="
2447 __MODULE_STRING(FTDI_VID)")");
2448 module_param(product, ushort, 0);
2449 MODULE_PARM_DESC(vendor, "User specified product ID");
2450
Linux kernel - Deliverables
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