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a85946b212d33e2ed71805dbf516b2194f800673
[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_CANDAPTER_PID) },
147 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_0_PID) },
148 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_1_PID) },
149 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_2_PID) },
150 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_3_PID) },
151 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_4_PID) },
152 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_5_PID) },
153 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_6_PID) },
154 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_7_PID) },
155 { USB_DEVICE(FTDI_VID, FTDI_ACTZWAVE_PID) },
156 { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) },
157 { USB_DEVICE(FTDI_VID, FTDI_IPLUS_PID) },
158 { USB_DEVICE(FTDI_VID, FTDI_IPLUS2_PID) },
159 { USB_DEVICE(FTDI_VID, FTDI_DMX4ALL) },
160 { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) },
161 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) },
162 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) },
163 { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) },
164 { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) },
165 { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) },
166 { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) },
167 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) },
168 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) },
169 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) },
170 { USB_DEVICE(FTDI_VID, FTDI_SPROG_II) },
171 { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) },
172 { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) },
173 { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) },
174 { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) },
175 { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) },
176 { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) },
177 { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) },
178 { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) },
179 { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) },
180 { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) },
181 { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) },
182 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) },
183 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) },
184 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) },
185 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) },
186 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) },
187 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) },
188 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) },
189 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0100_PID) },
190 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0101_PID) },
191 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0102_PID) },
192 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0103_PID) },
193 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0104_PID) },
194 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0105_PID) },
195 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0106_PID) },
196 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0107_PID) },
197 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0108_PID) },
198 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0109_PID) },
199 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010A_PID) },
200 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010B_PID) },
201 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010C_PID) },
202 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010D_PID) },
203 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010E_PID) },
204 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010F_PID) },
205 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0110_PID) },
206 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0111_PID) },
207 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0112_PID) },
208 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0113_PID) },
209 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0114_PID) },
210 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0115_PID) },
211 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0116_PID) },
212 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0117_PID) },
213 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0118_PID) },
214 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0119_PID) },
215 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011A_PID) },
216 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011B_PID) },
217 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011C_PID) },
218 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011D_PID) },
219 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011E_PID) },
220 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011F_PID) },
221 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0120_PID) },
222 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0121_PID) },
223 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0122_PID) },
224 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0123_PID) },
225 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0124_PID) },
226 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0125_PID) },
227 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0126_PID) },
228 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0127_PID),
229 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
230 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0128_PID) },
231 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0129_PID) },
232 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012A_PID) },
233 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012B_PID) },
234 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012C_PID),
235 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
236 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012D_PID) },
237 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012E_PID) },
238 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012F_PID) },
239 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0130_PID) },
240 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0131_PID) },
241 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0132_PID) },
242 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0133_PID) },
243 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0134_PID) },
244 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0135_PID) },
245 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0136_PID) },
246 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0137_PID) },
247 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0138_PID) },
248 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0139_PID) },
249 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013A_PID) },
250 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013B_PID) },
251 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013C_PID) },
252 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013D_PID) },
253 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013E_PID) },
254 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013F_PID) },
255 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0140_PID) },
256 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0141_PID) },
257 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0142_PID) },
258 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0143_PID) },
259 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0144_PID) },
260 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0145_PID) },
261 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0146_PID) },
262 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0147_PID) },
263 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0148_PID) },
264 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0149_PID) },
265 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014A_PID) },
266 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014B_PID) },
267 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014C_PID) },
268 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014D_PID) },
269 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014E_PID) },
270 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014F_PID) },
271 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0150_PID) },
272 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0151_PID) },
273 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0152_PID) },
274 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0153_PID),
275 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
276 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0154_PID),
277 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
278 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0155_PID),
279 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
280 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0156_PID),
281 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
282 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0157_PID),
283 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
284 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0158_PID),
285 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
286 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0159_PID) },
287 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015A_PID) },
288 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015B_PID) },
289 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015C_PID) },
290 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015D_PID) },
291 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015E_PID) },
292 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015F_PID) },
293 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0160_PID) },
294 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0161_PID) },
295 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0162_PID) },
296 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0163_PID) },
297 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0164_PID) },
298 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0165_PID) },
299 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0166_PID) },
300 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0167_PID) },
301 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0168_PID) },
302 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0169_PID) },
303 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016A_PID) },
304 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016B_PID) },
305 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016C_PID) },
306 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016D_PID) },
307 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016E_PID) },
308 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016F_PID) },
309 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0170_PID) },
310 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0171_PID) },
311 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0172_PID) },
312 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0173_PID) },
313 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0174_PID) },
314 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0175_PID) },
315 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0176_PID) },
316 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0177_PID) },
317 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0178_PID) },
318 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0179_PID) },
319 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017A_PID) },
320 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017B_PID) },
321 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017C_PID) },
322 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017D_PID) },
323 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017E_PID) },
324 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017F_PID) },
325 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0180_PID) },
326 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0181_PID) },
327 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0182_PID) },
328 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0183_PID) },
329 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0184_PID) },
330 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0185_PID) },
331 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0186_PID) },
332 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0187_PID) },
333 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0188_PID) },
334 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0189_PID) },
335 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018A_PID) },
336 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018B_PID) },
337 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018C_PID) },
338 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018D_PID) },
339 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018E_PID) },
340 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018F_PID) },
341 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0190_PID) },
342 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0191_PID) },
343 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0192_PID) },
344 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0193_PID) },
345 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0194_PID) },
346 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0195_PID) },
347 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0196_PID) },
348 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0197_PID) },
349 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0198_PID) },
350 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0199_PID) },
351 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019A_PID) },
352 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019B_PID) },
353 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019C_PID) },
354 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019D_PID) },
355 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019E_PID) },
356 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019F_PID) },
357 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A0_PID) },
358 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A1_PID) },
359 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A2_PID) },
360 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A3_PID) },
361 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A4_PID) },
362 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A5_PID) },
363 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A6_PID) },
364 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A7_PID) },
365 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A8_PID) },
366 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A9_PID) },
367 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AA_PID) },
368 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AB_PID) },
369 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AC_PID) },
370 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AD_PID) },
371 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AE_PID) },
372 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AF_PID) },
373 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B0_PID) },
374 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B1_PID) },
375 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B2_PID) },
376 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B3_PID) },
377 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B4_PID) },
378 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B5_PID) },
379 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B6_PID) },
380 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B7_PID) },
381 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B8_PID) },
382 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B9_PID) },
383 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BA_PID) },
384 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BB_PID) },
385 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BC_PID) },
386 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BD_PID) },
387 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BE_PID) },
388 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BF_PID) },
389 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C0_PID) },
390 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C1_PID) },
391 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C2_PID) },
392 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C3_PID) },
393 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C4_PID) },
394 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C5_PID) },
395 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C6_PID) },
396 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C7_PID) },
397 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C8_PID) },
398 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C9_PID) },
399 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CA_PID) },
400 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CB_PID) },
401 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CC_PID) },
402 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CD_PID) },
403 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CE_PID) },
404 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CF_PID) },
405 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D0_PID) },
406 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D1_PID) },
407 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D2_PID) },
408 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D3_PID) },
409 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D4_PID) },
410 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D5_PID) },
411 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D6_PID) },
412 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D7_PID) },
413 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D8_PID) },
414 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D9_PID) },
415 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DA_PID) },
416 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DB_PID) },
417 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DC_PID) },
418 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DD_PID) },
419 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DE_PID) },
420 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DF_PID) },
421 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E0_PID) },
422 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E1_PID) },
423 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E2_PID) },
424 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E3_PID) },
425 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E4_PID) },
426 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E5_PID) },
427 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E6_PID) },
428 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E7_PID) },
429 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E8_PID) },
430 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E9_PID) },
431 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EA_PID) },
432 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EB_PID) },
433 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EC_PID) },
434 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01ED_PID) },
435 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EE_PID) },
436 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EF_PID) },
437 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F0_PID) },
438 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F1_PID) },
439 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F2_PID) },
440 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F3_PID) },
441 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F4_PID) },
442 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F5_PID) },
443 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F6_PID) },
444 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F7_PID) },
445 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F8_PID) },
446 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F9_PID) },
447 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FA_PID) },
448 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FB_PID) },
449 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FC_PID) },
450 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FD_PID) },
451 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FE_PID) },
452 { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FF_PID) },
453 { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) },
454 { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) },
455 { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) },
456 { USB_DEVICE(FTDI_VID, FTDI_USBX_707_PID) },
457 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) },
458 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) },
459 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) },
460 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) },
461 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2106_PID) },
462 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) },
463 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) },
464 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) },
465 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) },
466 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) },
467 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) },
468 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) },
469 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) },
470 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) },
471 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) },
472 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) },
473 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) },
474 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) },
475 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) },
476 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) },
477 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) },
478 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) },
479 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) },
480 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) },
481 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) },
482 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) },
483 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) },
484 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) },
485 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) },
486 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) },
487 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) },
488 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) },
489 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) },
490 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) },
491 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) },
492 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) },
493 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) },
494 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) },
495 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) },
496 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) },
497 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) },
498 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) },
499 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) },
500 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) },
501 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) },
502 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) },
503 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) },
504 { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) },
505 { USB_DEVICE(OCT_VID, OCT_US101_PID) },
506 { USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID),
507 .driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk },
508 { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID),
509 .driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk },
510 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) },
511 { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) },
512 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) },
513 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) },
514 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) },
515 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) },
516 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) },
517 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) },
518 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) },
519 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) },
520 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) },
521 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) },
522 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) },
523 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) },
524 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) },
525 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) },
526 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) },
527 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) },
528 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) },
529 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) },
530 { USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) },
531 { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) },
532 { USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) },
533 { USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) },
534 { USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) },
535 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) },
536 { USB_DEVICE(FTDI_VID, FTDI_IBS_US485_PID) },
537 { USB_DEVICE(FTDI_VID, FTDI_IBS_PICPRO_PID) },
538 { USB_DEVICE(FTDI_VID, FTDI_IBS_PCMCIA_PID) },
539 { USB_DEVICE(FTDI_VID, FTDI_IBS_PK1_PID) },
540 { USB_DEVICE(FTDI_VID, FTDI_IBS_RS232MON_PID) },
541 { USB_DEVICE(FTDI_VID, FTDI_IBS_APP70_PID) },
542 { USB_DEVICE(FTDI_VID, FTDI_IBS_PEDO_PID) },
543 { USB_DEVICE(FTDI_VID, FTDI_IBS_PROD_PID) },
544 /*
545 * Due to many user requests for multiple ELV devices we enable
546 * them by default.
547 */
548 { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) },
549 { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) },
550 { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) },
551 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) },
552 { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) },
553 { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) },
554 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) },
555 { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) },
556 { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) },
557 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) },
558 { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) },
559 { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) },
560 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) },
561 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) },
562 { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) },
563 { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) },
564 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) },
565 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) },
566 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1010PC_PID) },
567 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) },
568 { USB_DEVICE(FTDI_VID, FTDI_ELV_HS485_PID) },
569 { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) },
570 { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) },
571 { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) },
572 { USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) },
573 { USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) },
574 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) },
575 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) },
576 { USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) },
577 { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) },
578 { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) },
579 { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) },
580 { USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) },
581 { USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) },
582 { USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) },
583 { USB_DEVICE(FTDI_VID, FTDI_OCEANIC_PID) },
584 { USB_DEVICE(TTI_VID, TTI_QL355P_PID) },
585 { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) },
586 { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) },
587 { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) },
588 { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) },
589 { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) },
590 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) },
591 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) },
592 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) },
593 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) },
594 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) },
595 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) },
596 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) },
597 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) },
598 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) },
599 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) },
600 { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
601 { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) },
602 { USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) },
603 { USB_DEVICE(FTDI_VID, FTDI_MHAM_YS_PID) },
604 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) },
605 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) },
606 { USB_DEVICE(FTDI_VID, FTDI_MHAM_IC_PID) },
607 { USB_DEVICE(FTDI_VID, FTDI_MHAM_DB9_PID) },
608 { USB_DEVICE(FTDI_VID, FTDI_MHAM_RS232_PID) },
609 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y9_PID) },
610 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) },
611 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) },
612 { USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) },
613 { USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) },
614 { USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) },
615 { USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) },
616 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) },
617 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) },
618 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) },
619 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HRC_PID) },
620 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16IC_PID) },
621 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) },
622 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) },
623 { USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) },
624 { USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) },
625 { USB_DEVICE(FTDI_VID, FTDI_ECLO_COM_1WIRE_PID) },
626 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) },
627 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) },
628 { USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) },
629 { USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) },
630 { USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) },
631 { USB_DEVICE(ICOM_ID1_VID, ICOM_ID1_PID) },
632 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_TMU_PID) },
633 { USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) },
634 { USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) },
635 { USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) },
636 { USB_DEVICE(TESTO_VID, TESTO_USB_INTERFACE_PID) },
637 { USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) },
638 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) },
639 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) },
640 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) },
641 { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) },
642 { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
643 { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) },
644 { USB_DEVICE(FTDI_VID, FTDI_PHI_FISCO_PID) },
645 { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) },
646 { USB_DEVICE(FTDI_VID, FTDI_ELSTER_UNICOM_PID) },
647 { USB_DEVICE(FTDI_VID, FTDI_PROPOX_JTAGCABLEII_PID) },
648 { USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID),
649 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
650 { USB_DEVICE(FIC_VID, FIC_NEO1973_DEBUG_PID),
651 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
652 { USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID),
653 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
654 { USB_DEVICE(FTDI_VID, LMI_LM3S_DEVEL_BOARD_PID),
655 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
656 { USB_DEVICE(FTDI_VID, LMI_LM3S_EVAL_BOARD_PID),
657 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
658 { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
659 { USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) },
660 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO4x4_PID) },
661 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DGQG_PID) },
662 { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DUSB_PID) },
663 { USB_DEVICE(ALTI2_VID, ALTI2_N3_PID) },
664 { }, /* Optional parameter entry */
665 { } /* Terminating entry */
666 };
667
668 MODULE_DEVICE_TABLE(usb, id_table_combined);
669
670 static struct usb_driver ftdi_driver = {
671 .name = "ftdi_sio",
672 .probe = usb_serial_probe,
673 .disconnect = usb_serial_disconnect,
674 .id_table = id_table_combined,
675 .no_dynamic_id = 1,
676 };
677
678 static const char *ftdi_chip_name[] = {
679 [SIO] = "SIO", /* the serial part of FT8U100AX */
680 [FT8U232AM] = "FT8U232AM",
681 [FT232BM] = "FT232BM",
682 [FT2232C] = "FT2232C",
683 [FT232RL] = "FT232RL",
684 };
685
686
687 /* Constants for read urb and write urb */
688 #define BUFSZ 512
689 #define PKTSZ 64
690
691 /* rx_flags */
692 #define THROTTLED 0x01
693 #define ACTUALLY_THROTTLED 0x02
694
695 /* Used for TIOCMIWAIT */
696 #define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD)
697 #define FTDI_STATUS_B1_MASK (FTDI_RS_BI)
698 /* End TIOCMIWAIT */
699
700 #define FTDI_IMPL_ASYNC_FLAGS = (ASYNC_SPD_HI | ASYNC_SPD_VHI \
701 | ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP)
702
703 /* function prototypes for a FTDI serial converter */
704 static int ftdi_sio_probe(struct usb_serial *serial,
705 const struct usb_device_id *id);
706 static void ftdi_shutdown(struct usb_serial *serial);
707 static int ftdi_sio_port_probe(struct usb_serial_port *port);
708 static int ftdi_sio_port_remove(struct usb_serial_port *port);
709 static int ftdi_open(struct tty_struct *tty,
710 struct usb_serial_port *port, struct file *filp);
711 static void ftdi_close(struct tty_struct *tty,
712 struct usb_serial_port *port, struct file *filp);
713 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
714 const unsigned char *buf, int count);
715 static int ftdi_write_room(struct tty_struct *tty);
716 static int ftdi_chars_in_buffer(struct tty_struct *tty);
717 static void ftdi_write_bulk_callback(struct urb *urb);
718 static void ftdi_read_bulk_callback(struct urb *urb);
719 static void ftdi_process_read(struct work_struct *work);
720 static void ftdi_set_termios(struct tty_struct *tty,
721 struct usb_serial_port *port, struct ktermios *old);
722 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file);
723 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
724 unsigned int set, unsigned int clear);
725 static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
726 unsigned int cmd, unsigned long arg);
727 static void ftdi_break_ctl(struct tty_struct *tty, int break_state);
728 static void ftdi_throttle(struct tty_struct *tty);
729 static void ftdi_unthrottle(struct tty_struct *tty);
730
731 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base);
732 static unsigned short int ftdi_232am_baud_to_divisor(int baud);
733 static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base);
734 static __u32 ftdi_232bm_baud_to_divisor(int baud);
735
736 static struct usb_serial_driver ftdi_sio_device = {
737 .driver = {
738 .owner = THIS_MODULE,
739 .name = "ftdi_sio",
740 },
741 .description = "FTDI USB Serial Device",
742 .usb_driver = &ftdi_driver ,
743 .id_table = id_table_combined,
744 .num_ports = 1,
745 .probe = ftdi_sio_probe,
746 .port_probe = ftdi_sio_port_probe,
747 .port_remove = ftdi_sio_port_remove,
748 .open = ftdi_open,
749 .close = ftdi_close,
750 .throttle = ftdi_throttle,
751 .unthrottle = ftdi_unthrottle,
752 .write = ftdi_write,
753 .write_room = ftdi_write_room,
754 .chars_in_buffer = ftdi_chars_in_buffer,
755 .read_bulk_callback = ftdi_read_bulk_callback,
756 .write_bulk_callback = ftdi_write_bulk_callback,
757 .tiocmget = ftdi_tiocmget,
758 .tiocmset = ftdi_tiocmset,
759 .ioctl = ftdi_ioctl,
760 .set_termios = ftdi_set_termios,
761 .break_ctl = ftdi_break_ctl,
762 .shutdown = ftdi_shutdown,
763 };
764
765
766 #define WDR_TIMEOUT 5000 /* default urb timeout */
767 #define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */
768
769 /* High and low are for DTR, RTS etc etc */
770 #define HIGH 1
771 #define LOW 0
772
773 /* number of outstanding urbs to prevent userspace DoS from happening */
774 #define URB_UPPER_LIMIT 42
775
776 /*
777 * ***************************************************************************
778 * Utility functions
779 * ***************************************************************************
780 */
781
782 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base)
783 {
784 unsigned short int divisor;
785 /* divisor shifted 3 bits to the left */
786 int divisor3 = base / 2 / baud;
787 if ((divisor3 & 0x7) == 7)
788 divisor3++; /* round x.7/8 up to x+1 */
789 divisor = divisor3 >> 3;
790 divisor3 &= 0x7;
791 if (divisor3 == 1)
792 divisor |= 0xc000;
793 else if (divisor3 >= 4)
794 divisor |= 0x4000;
795 else if (divisor3 != 0)
796 divisor |= 0x8000;
797 else if (divisor == 1)
798 divisor = 0; /* special case for maximum baud rate */
799 return divisor;
800 }
801
802 static unsigned short int ftdi_232am_baud_to_divisor(int baud)
803 {
804 return ftdi_232am_baud_base_to_divisor(baud, 48000000);
805 }
806
807 static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base)
808 {
809 static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
810 __u32 divisor;
811 /* divisor shifted 3 bits to the left */
812 int divisor3 = base / 2 / baud;
813 divisor = divisor3 >> 3;
814 divisor |= (__u32)divfrac[divisor3 & 0x7] << 14;
815 /* Deal with special cases for highest baud rates. */
816 if (divisor == 1)
817 divisor = 0;
818 else if (divisor == 0x4001)
819 divisor = 1;
820 return divisor;
821 }
822
823 static __u32 ftdi_232bm_baud_to_divisor(int baud)
824 {
825 return ftdi_232bm_baud_base_to_divisor(baud, 48000000);
826 }
827
828 #define set_mctrl(port, set) update_mctrl((port), (set), 0)
829 #define clear_mctrl(port, clear) update_mctrl((port), 0, (clear))
830
831 static int update_mctrl(struct usb_serial_port *port, unsigned int set,
832 unsigned int clear)
833 {
834 struct ftdi_private *priv = usb_get_serial_port_data(port);
835 char *buf;
836 unsigned urb_value;
837 int rv;
838
839 if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
840 dbg("%s - DTR|RTS not being set|cleared", __func__);
841 return 0; /* no change */
842 }
843
844 buf = kmalloc(1, GFP_NOIO);
845 if (!buf)
846 return -ENOMEM;
847
848 clear &= ~set; /* 'set' takes precedence over 'clear' */
849 urb_value = 0;
850 if (clear & TIOCM_DTR)
851 urb_value |= FTDI_SIO_SET_DTR_LOW;
852 if (clear & TIOCM_RTS)
853 urb_value |= FTDI_SIO_SET_RTS_LOW;
854 if (set & TIOCM_DTR)
855 urb_value |= FTDI_SIO_SET_DTR_HIGH;
856 if (set & TIOCM_RTS)
857 urb_value |= FTDI_SIO_SET_RTS_HIGH;
858 rv = usb_control_msg(port->serial->dev,
859 usb_sndctrlpipe(port->serial->dev, 0),
860 FTDI_SIO_SET_MODEM_CTRL_REQUEST,
861 FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
862 urb_value, priv->interface,
863 buf, 0, WDR_TIMEOUT);
864
865 kfree(buf);
866 if (rv < 0) {
867 dbg("%s Error from MODEM_CTRL urb: DTR %s, RTS %s",
868 __func__,
869 (set & TIOCM_DTR) ? "HIGH" :
870 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
871 (set & TIOCM_RTS) ? "HIGH" :
872 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
873 } else {
874 dbg("%s - DTR %s, RTS %s", __func__,
875 (set & TIOCM_DTR) ? "HIGH" :
876 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
877 (set & TIOCM_RTS) ? "HIGH" :
878 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
879 /* FIXME: locking on last_dtr_rts */
880 priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set;
881 }
882 return rv;
883 }
884
885
886 static __u32 get_ftdi_divisor(struct tty_struct *tty,
887 struct usb_serial_port *port)
888 { /* get_ftdi_divisor */
889 struct ftdi_private *priv = usb_get_serial_port_data(port);
890 __u32 div_value = 0;
891 int div_okay = 1;
892 int baud;
893
894 /*
895 * The logic involved in setting the baudrate can be cleanly split into
896 * 3 steps.
897 * 1. Standard baud rates are set in tty->termios->c_cflag
898 * 2. If these are not enough, you can set any speed using alt_speed as
899 * follows:
900 * - set tty->termios->c_cflag speed to B38400
901 * - set your real speed in tty->alt_speed; it gets ignored when
902 * alt_speed==0, (or)
903 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
904 * follows:
905 * flags & ASYNC_SPD_MASK == ASYNC_SPD_[HI, VHI, SHI, WARP],
906 * this just sets alt_speed to (HI: 57600, VHI: 115200,
907 * SHI: 230400, WARP: 460800)
908 * ** Steps 1, 2 are done courtesy of tty_get_baud_rate
909 * 3. You can also set baud rate by setting custom divisor as follows
910 * - set tty->termios->c_cflag speed to B38400
911 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as
912 * follows:
913 * o flags & ASYNC_SPD_MASK == ASYNC_SPD_CUST
914 * o custom_divisor set to baud_base / your_new_baudrate
915 * ** Step 3 is done courtesy of code borrowed from serial.c
916 * I should really spend some time and separate + move this common
917 * code to serial.c, it is replicated in nearly every serial driver
918 * you see.
919 */
920
921 /* 1. Get the baud rate from the tty settings, this observes
922 alt_speed hack */
923
924 baud = tty_get_baud_rate(tty);
925 dbg("%s - tty_get_baud_rate reports speed %d", __func__, baud);
926
927 /* 2. Observe async-compatible custom_divisor hack, update baudrate
928 if needed */
929
930 if (baud == 38400 &&
931 ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
932 (priv->custom_divisor)) {
933 baud = priv->baud_base / priv->custom_divisor;
934 dbg("%s - custom divisor %d sets baud rate to %d",
935 __func__, priv->custom_divisor, baud);
936 }
937
938 /* 3. Convert baudrate to device-specific divisor */
939
940 if (!baud)
941 baud = 9600;
942 switch (priv->chip_type) {
943 case SIO: /* SIO chip */
944 switch (baud) {
945 case 300: div_value = ftdi_sio_b300; break;
946 case 600: div_value = ftdi_sio_b600; break;
947 case 1200: div_value = ftdi_sio_b1200; break;
948 case 2400: div_value = ftdi_sio_b2400; break;
949 case 4800: div_value = ftdi_sio_b4800; break;
950 case 9600: div_value = ftdi_sio_b9600; break;
951 case 19200: div_value = ftdi_sio_b19200; break;
952 case 38400: div_value = ftdi_sio_b38400; break;
953 case 57600: div_value = ftdi_sio_b57600; break;
954 case 115200: div_value = ftdi_sio_b115200; break;
955 } /* baud */
956 if (div_value == 0) {
957 dbg("%s - Baudrate (%d) requested is not supported",
958 __func__, baud);
959 div_value = ftdi_sio_b9600;
960 baud = 9600;
961 div_okay = 0;
962 }
963 break;
964 case FT8U232AM: /* 8U232AM chip */
965 if (baud <= 3000000) {
966 div_value = ftdi_232am_baud_to_divisor(baud);
967 } else {
968 dbg("%s - Baud rate too high!", __func__);
969 baud = 9600;
970 div_value = ftdi_232am_baud_to_divisor(9600);
971 div_okay = 0;
972 }
973 break;
974 case FT232BM: /* FT232BM chip */
975 case FT2232C: /* FT2232C chip */
976 case FT232RL:
977 if (baud <= 3000000) {
978 div_value = ftdi_232bm_baud_to_divisor(baud);
979 } else {
980 dbg("%s - Baud rate too high!", __func__);
981 div_value = ftdi_232bm_baud_to_divisor(9600);
982 div_okay = 0;
983 baud = 9600;
984 }
985 break;
986 } /* priv->chip_type */
987
988 if (div_okay) {
989 dbg("%s - Baud rate set to %d (divisor 0x%lX) on chip %s",
990 __func__, baud, (unsigned long)div_value,
991 ftdi_chip_name[priv->chip_type]);
992 }
993
994 tty_encode_baud_rate(tty, baud, baud);
995 return div_value;
996 }
997
998 static int change_speed(struct tty_struct *tty, struct usb_serial_port *port)
999 {
1000 struct ftdi_private *priv = usb_get_serial_port_data(port);
1001 char *buf;
1002 __u16 urb_value;
1003 __u16 urb_index;
1004 __u32 urb_index_value;
1005 int rv;
1006
1007 buf = kmalloc(1, GFP_NOIO);
1008 if (!buf)
1009 return -ENOMEM;
1010
1011 urb_index_value = get_ftdi_divisor(tty, port);
1012 urb_value = (__u16)urb_index_value;
1013 urb_index = (__u16)(urb_index_value >> 16);
1014 if (priv->interface) { /* FT2232C */
1015 urb_index = (__u16)((urb_index << 8) | priv->interface);
1016 }
1017
1018 rv = usb_control_msg(port->serial->dev,
1019 usb_sndctrlpipe(port->serial->dev, 0),
1020 FTDI_SIO_SET_BAUDRATE_REQUEST,
1021 FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
1022 urb_value, urb_index,
1023 buf, 0, WDR_SHORT_TIMEOUT);
1024
1025 kfree(buf);
1026 return rv;
1027 }
1028
1029
1030
1031 static int get_serial_info(struct usb_serial_port *port,
1032 struct serial_struct __user *retinfo)
1033 {
1034 struct ftdi_private *priv = usb_get_serial_port_data(port);
1035 struct serial_struct tmp;
1036
1037 if (!retinfo)
1038 return -EFAULT;
1039 memset(&tmp, 0, sizeof(tmp));
1040 tmp.flags = priv->flags;
1041 tmp.baud_base = priv->baud_base;
1042 tmp.custom_divisor = priv->custom_divisor;
1043 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1044 return -EFAULT;
1045 return 0;
1046 } /* get_serial_info */
1047
1048
1049 static int set_serial_info(struct tty_struct *tty,
1050 struct usb_serial_port *port, struct serial_struct __user *newinfo)
1051 { /* set_serial_info */
1052 struct ftdi_private *priv = usb_get_serial_port_data(port);
1053 struct serial_struct new_serial;
1054 struct ftdi_private old_priv;
1055
1056 if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
1057 return -EFAULT;
1058
1059 lock_kernel();
1060 old_priv = *priv;
1061
1062 /* Do error checking and permission checking */
1063
1064 if (!capable(CAP_SYS_ADMIN)) {
1065 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
1066 (priv->flags & ~ASYNC_USR_MASK)))
1067 return -EPERM;
1068 priv->flags = ((priv->flags & ~ASYNC_USR_MASK) |
1069 (new_serial.flags & ASYNC_USR_MASK));
1070 priv->custom_divisor = new_serial.custom_divisor;
1071 goto check_and_exit;
1072 }
1073
1074 if ((new_serial.baud_base != priv->baud_base) &&
1075 (new_serial.baud_base < 9600)) {
1076 unlock_kernel();
1077 return -EINVAL;
1078 }
1079
1080 /* Make the changes - these are privileged changes! */
1081
1082 priv->flags = ((priv->flags & ~ASYNC_FLAGS) |
1083 (new_serial.flags & ASYNC_FLAGS));
1084 priv->custom_divisor = new_serial.custom_divisor;
1085
1086 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1087
1088 check_and_exit:
1089 if ((old_priv.flags & ASYNC_SPD_MASK) !=
1090 (priv->flags & ASYNC_SPD_MASK)) {
1091 if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
1092 tty->alt_speed = 57600;
1093 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
1094 tty->alt_speed = 115200;
1095 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
1096 tty->alt_speed = 230400;
1097 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
1098 tty->alt_speed = 460800;
1099 else
1100 tty->alt_speed = 0;
1101 }
1102 if (((old_priv.flags & ASYNC_SPD_MASK) !=
1103 (priv->flags & ASYNC_SPD_MASK)) ||
1104 (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
1105 (old_priv.custom_divisor != priv->custom_divisor))) {
1106 unlock_kernel();
1107 change_speed(tty, port);
1108 }
1109 else
1110 unlock_kernel();
1111 return 0;
1112
1113 } /* set_serial_info */
1114
1115
1116 /* Determine type of FTDI chip based on USB config and descriptor. */
1117 static void ftdi_determine_type(struct usb_serial_port *port)
1118 {
1119 struct ftdi_private *priv = usb_get_serial_port_data(port);
1120 struct usb_serial *serial = port->serial;
1121 struct usb_device *udev = serial->dev;
1122 unsigned version;
1123 unsigned interfaces;
1124
1125 /* Assume it is not the original SIO device for now. */
1126 priv->baud_base = 48000000 / 2;
1127 priv->write_offset = 0;
1128
1129 version = le16_to_cpu(udev->descriptor.bcdDevice);
1130 interfaces = udev->actconfig->desc.bNumInterfaces;
1131 dbg("%s: bcdDevice = 0x%x, bNumInterfaces = %u", __func__,
1132 version, interfaces);
1133 if (interfaces > 1) {
1134 int inter;
1135
1136 /* Multiple interfaces. Assume FT2232C. */
1137 priv->chip_type = FT2232C;
1138 /* Determine interface code. */
1139 inter = serial->interface->altsetting->desc.bInterfaceNumber;
1140 if (inter == 0)
1141 priv->interface = PIT_SIOA;
1142 else
1143 priv->interface = PIT_SIOB;
1144 /* BM-type devices have a bug where bcdDevice gets set
1145 * to 0x200 when iSerialNumber is 0. */
1146 if (version < 0x500) {
1147 dbg("%s: something fishy - bcdDevice too low for multi-interface device",
1148 __func__);
1149 }
1150 } else if (version < 0x200) {
1151 /* Old device. Assume its the original SIO. */
1152 priv->chip_type = SIO;
1153 priv->baud_base = 12000000 / 16;
1154 priv->write_offset = 1;
1155 } else if (version < 0x400) {
1156 /* Assume its an FT8U232AM (or FT8U245AM) */
1157 /* (It might be a BM because of the iSerialNumber bug,
1158 * but it will still work as an AM device.) */
1159 priv->chip_type = FT8U232AM;
1160 } else if (version < 0x600) {
1161 /* Assume its an FT232BM (or FT245BM) */
1162 priv->chip_type = FT232BM;
1163 } else {
1164 /* Assume its an FT232R */
1165 priv->chip_type = FT232RL;
1166 }
1167 dev_info(&udev->dev, "Detected %s\n", ftdi_chip_name[priv->chip_type]);
1168 }
1169
1170
1171 /*
1172 * ***************************************************************************
1173 * Sysfs Attribute
1174 * ***************************************************************************
1175 */
1176
1177 static ssize_t show_latency_timer(struct device *dev,
1178 struct device_attribute *attr, char *buf)
1179 {
1180 struct usb_serial_port *port = to_usb_serial_port(dev);
1181 struct ftdi_private *priv = usb_get_serial_port_data(port);
1182 struct usb_device *udev = port->serial->dev;
1183 unsigned short latency = 0;
1184 int rv = 0;
1185
1186
1187 dbg("%s", __func__);
1188
1189 rv = usb_control_msg(udev,
1190 usb_rcvctrlpipe(udev, 0),
1191 FTDI_SIO_GET_LATENCY_TIMER_REQUEST,
1192 FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE,
1193 0, priv->interface,
1194 (char *) &latency, 1, WDR_TIMEOUT);
1195
1196 if (rv < 0) {
1197 dev_err(dev, "Unable to read latency timer: %i\n", rv);
1198 return -EIO;
1199 }
1200 return sprintf(buf, "%i\n", latency);
1201 }
1202
1203 /* Write a new value of the latency timer, in units of milliseconds. */
1204 static ssize_t store_latency_timer(struct device *dev,
1205 struct device_attribute *attr, const char *valbuf,
1206 size_t count)
1207 {
1208 struct usb_serial_port *port = to_usb_serial_port(dev);
1209 struct ftdi_private *priv = usb_get_serial_port_data(port);
1210 struct usb_device *udev = port->serial->dev;
1211 char buf[1];
1212 int v = simple_strtoul(valbuf, NULL, 10);
1213 int rv = 0;
1214
1215 dbg("%s: setting latency timer = %i", __func__, v);
1216
1217 rv = usb_control_msg(udev,
1218 usb_sndctrlpipe(udev, 0),
1219 FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
1220 FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
1221 v, priv->interface,
1222 buf, 0, WDR_TIMEOUT);
1223
1224 if (rv < 0) {
1225 dev_err(dev, "Unable to write latency timer: %i\n", rv);
1226 return -EIO;
1227 }
1228
1229 return count;
1230 }
1231
1232 /* Write an event character directly to the FTDI register. The ASCII
1233 value is in the low 8 bits, with the enable bit in the 9th bit. */
1234 static ssize_t store_event_char(struct device *dev,
1235 struct device_attribute *attr, const char *valbuf, size_t count)
1236 {
1237 struct usb_serial_port *port = to_usb_serial_port(dev);
1238 struct ftdi_private *priv = usb_get_serial_port_data(port);
1239 struct usb_device *udev = port->serial->dev;
1240 char buf[1];
1241 int v = simple_strtoul(valbuf, NULL, 10);
1242 int rv = 0;
1243
1244 dbg("%s: setting event char = %i", __func__, v);
1245
1246 rv = usb_control_msg(udev,
1247 usb_sndctrlpipe(udev, 0),
1248 FTDI_SIO_SET_EVENT_CHAR_REQUEST,
1249 FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE,
1250 v, priv->interface,
1251 buf, 0, WDR_TIMEOUT);
1252
1253 if (rv < 0) {
1254 dbg("Unable to write event character: %i", rv);
1255 return -EIO;
1256 }
1257
1258 return count;
1259 }
1260
1261 static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer,
1262 store_latency_timer);
1263 static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char);
1264
1265 static int create_sysfs_attrs(struct usb_serial_port *port)
1266 {
1267 struct ftdi_private *priv = usb_get_serial_port_data(port);
1268 int retval = 0;
1269
1270 dbg("%s", __func__);
1271
1272 /* XXX I've no idea if the original SIO supports the event_char
1273 * sysfs parameter, so I'm playing it safe. */
1274 if (priv->chip_type != SIO) {
1275 dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]);
1276 retval = device_create_file(&port->dev, &dev_attr_event_char);
1277 if ((!retval) &&
1278 (priv->chip_type == FT232BM ||
1279 priv->chip_type == FT2232C ||
1280 priv->chip_type == FT232RL)) {
1281 retval = device_create_file(&port->dev,
1282 &dev_attr_latency_timer);
1283 }
1284 }
1285 return retval;
1286 }
1287
1288 static void remove_sysfs_attrs(struct usb_serial_port *port)
1289 {
1290 struct ftdi_private *priv = usb_get_serial_port_data(port);
1291
1292 dbg("%s", __func__);
1293
1294 /* XXX see create_sysfs_attrs */
1295 if (priv->chip_type != SIO) {
1296 device_remove_file(&port->dev, &dev_attr_event_char);
1297 if (priv->chip_type == FT232BM ||
1298 priv->chip_type == FT2232C ||
1299 priv->chip_type == FT232RL) {
1300 device_remove_file(&port->dev, &dev_attr_latency_timer);
1301 }
1302 }
1303
1304 }
1305
1306 /*
1307 * ***************************************************************************
1308 * FTDI driver specific functions
1309 * ***************************************************************************
1310 */
1311
1312 /* Probe function to check for special devices */
1313 static int ftdi_sio_probe(struct usb_serial *serial,
1314 const struct usb_device_id *id)
1315 {
1316 struct ftdi_sio_quirk *quirk =
1317 (struct ftdi_sio_quirk *)id->driver_info;
1318
1319 if (quirk && quirk->probe) {
1320 int ret = quirk->probe(serial);
1321 if (ret != 0)
1322 return ret;
1323 }
1324
1325 usb_set_serial_data(serial, (void *)id->driver_info);
1326
1327 return 0;
1328 }
1329
1330 static int ftdi_sio_port_probe(struct usb_serial_port *port)
1331 {
1332 struct ftdi_private *priv;
1333 struct ftdi_sio_quirk *quirk = usb_get_serial_data(port->serial);
1334
1335
1336 dbg("%s", __func__);
1337
1338 priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL);
1339 if (!priv) {
1340 dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", __func__,
1341 sizeof(struct ftdi_private));
1342 return -ENOMEM;
1343 }
1344
1345 spin_lock_init(&priv->rx_lock);
1346 spin_lock_init(&priv->tx_lock);
1347 init_waitqueue_head(&priv->delta_msr_wait);
1348 /* This will push the characters through immediately rather
1349 than queue a task to deliver them */
1350 priv->flags = ASYNC_LOW_LATENCY;
1351
1352 if (quirk && quirk->port_probe)
1353 quirk->port_probe(priv);
1354
1355 /* Increase the size of read buffers */
1356 kfree(port->bulk_in_buffer);
1357 port->bulk_in_buffer = kmalloc(BUFSZ, GFP_KERNEL);
1358 if (!port->bulk_in_buffer) {
1359 kfree(priv);
1360 return -ENOMEM;
1361 }
1362 if (port->read_urb) {
1363 port->read_urb->transfer_buffer = port->bulk_in_buffer;
1364 port->read_urb->transfer_buffer_length = BUFSZ;
1365 }
1366
1367 INIT_DELAYED_WORK(&priv->rx_work, ftdi_process_read);
1368 priv->port = port;
1369
1370 /* Free port's existing write urb and transfer buffer. */
1371 if (port->write_urb) {
1372 usb_free_urb(port->write_urb);
1373 port->write_urb = NULL;
1374 }
1375 kfree(port->bulk_out_buffer);
1376 port->bulk_out_buffer = NULL;
1377
1378 usb_set_serial_port_data(port, priv);
1379
1380 ftdi_determine_type(port);
1381 create_sysfs_attrs(port);
1382 return 0;
1383 }
1384
1385 /* Setup for the USB-UIRT device, which requires hardwired
1386 * baudrate (38400 gets mapped to 312500) */
1387 /* Called from usbserial:serial_probe */
1388 static void ftdi_USB_UIRT_setup(struct ftdi_private *priv)
1389 {
1390 dbg("%s", __func__);
1391
1392 priv->flags |= ASYNC_SPD_CUST;
1393 priv->custom_divisor = 77;
1394 priv->force_baud = 38400;
1395 } /* ftdi_USB_UIRT_setup */
1396
1397 /* Setup for the HE-TIRA1 device, which requires hardwired
1398 * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */
1399
1400 static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv)
1401 {
1402 dbg("%s", __func__);
1403
1404 priv->flags |= ASYNC_SPD_CUST;
1405 priv->custom_divisor = 240;
1406 priv->force_baud = 38400;
1407 priv->force_rtscts = 1;
1408 } /* ftdi_HE_TIRA1_setup */
1409
1410 /*
1411 * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko
1412 * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from
1413 * userspace using openocd.
1414 */
1415 static int ftdi_jtag_probe(struct usb_serial *serial)
1416 {
1417 struct usb_device *udev = serial->dev;
1418 struct usb_interface *interface = serial->interface;
1419
1420 dbg("%s", __func__);
1421
1422 if (interface == udev->actconfig->interface[0]) {
1423 dev_info(&udev->dev,
1424 "Ignoring serial port reserved for JTAG\n");
1425 return -ENODEV;
1426 }
1427
1428 return 0;
1429 }
1430
1431 /*
1432 * The Matrix Orbital VK204-25-USB has an invalid IN endpoint.
1433 * We have to correct it if we want to read from it.
1434 */
1435 static int ftdi_mtxorb_hack_setup(struct usb_serial *serial)
1436 {
1437 struct usb_host_endpoint *ep = serial->dev->ep_in[1];
1438 struct usb_endpoint_descriptor *ep_desc = &ep->desc;
1439
1440 if (ep->enabled && ep_desc->wMaxPacketSize == 0) {
1441 ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
1442 dev_info(&serial->dev->dev,
1443 "Fixing invalid wMaxPacketSize on read pipe\n");
1444 }
1445
1446 return 0;
1447 }
1448
1449 /* ftdi_shutdown is called from usbserial:usb_serial_disconnect
1450 * it is called when the usb device is disconnected
1451 *
1452 * usbserial:usb_serial_disconnect
1453 * calls __serial_close for each open of the port
1454 * shutdown is called then (ie ftdi_shutdown)
1455 */
1456 static void ftdi_shutdown(struct usb_serial *serial)
1457 {
1458 dbg("%s", __func__);
1459 }
1460
1461 static int ftdi_sio_port_remove(struct usb_serial_port *port)
1462 {
1463 struct ftdi_private *priv = usb_get_serial_port_data(port);
1464
1465 dbg("%s", __func__);
1466
1467 remove_sysfs_attrs(port);
1468
1469 /* all open ports are closed at this point
1470 * (by usbserial.c:__serial_close, which calls ftdi_close)
1471 */
1472
1473 if (priv) {
1474 usb_set_serial_port_data(port, NULL);
1475 kfree(priv);
1476 }
1477
1478 return 0;
1479 }
1480
1481 static int ftdi_open(struct tty_struct *tty,
1482 struct usb_serial_port *port, struct file *filp)
1483 { /* ftdi_open */
1484 struct usb_device *dev = port->serial->dev;
1485 struct ftdi_private *priv = usb_get_serial_port_data(port);
1486 unsigned long flags;
1487
1488 int result = 0;
1489 char buf[1]; /* Needed for the usb_control_msg I think */
1490
1491 dbg("%s", __func__);
1492
1493 spin_lock_irqsave(&priv->tx_lock, flags);
1494 priv->tx_bytes = 0;
1495 spin_unlock_irqrestore(&priv->tx_lock, flags);
1496 spin_lock_irqsave(&priv->rx_lock, flags);
1497 priv->rx_bytes = 0;
1498 spin_unlock_irqrestore(&priv->rx_lock, flags);
1499
1500 if (tty)
1501 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1502
1503 /* No error checking for this (will get errors later anyway) */
1504 /* See ftdi_sio.h for description of what is reset */
1505 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1506 FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
1507 FTDI_SIO_RESET_SIO,
1508 priv->interface, buf, 0, WDR_TIMEOUT);
1509
1510 /* Termios defaults are set by usb_serial_init. We don't change
1511 port->tty->termios - this would lose speed settings, etc.
1512 This is same behaviour as serial.c/rs_open() - Kuba */
1513
1514 /* ftdi_set_termios will send usb control messages */
1515 if (tty)
1516 ftdi_set_termios(tty, port, tty->termios);
1517
1518 /* FIXME: Flow control might be enabled, so it should be checked -
1519 we have no control of defaults! */
1520 /* Turn on RTS and DTR since we are not flow controlling by default */
1521 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1522
1523 /* Not throttled */
1524 spin_lock_irqsave(&priv->rx_lock, flags);
1525 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
1526 spin_unlock_irqrestore(&priv->rx_lock, flags);
1527
1528 /* Start reading from the device */
1529 priv->rx_processed = 0;
1530 usb_fill_bulk_urb(port->read_urb, dev,
1531 usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress),
1532 port->read_urb->transfer_buffer,
1533 port->read_urb->transfer_buffer_length,
1534 ftdi_read_bulk_callback, port);
1535 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
1536 if (result)
1537 dev_err(&port->dev,
1538 "%s - failed submitting read urb, error %d\n",
1539 __func__, result);
1540
1541
1542 return result;
1543 } /* ftdi_open */
1544
1545
1546
1547 /*
1548 * usbserial:__serial_close only calls ftdi_close if the point is open
1549 *
1550 * This only gets called when it is the last close
1551 *
1552 *
1553 */
1554
1555 static void ftdi_close(struct tty_struct *tty,
1556 struct usb_serial_port *port, struct file *filp)
1557 { /* ftdi_close */
1558 unsigned int c_cflag = tty->termios->c_cflag;
1559 struct ftdi_private *priv = usb_get_serial_port_data(port);
1560 char buf[1];
1561
1562 dbg("%s", __func__);
1563
1564 mutex_lock(&port->serial->disc_mutex);
1565 if (c_cflag & HUPCL && !port->serial->disconnected) {
1566 /* Disable flow control */
1567 if (usb_control_msg(port->serial->dev,
1568 usb_sndctrlpipe(port->serial->dev, 0),
1569 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
1570 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
1571 0, priv->interface, buf, 0,
1572 WDR_TIMEOUT) < 0) {
1573 dev_err(&port->dev, "error from flowcontrol urb\n");
1574 }
1575
1576 /* drop RTS and DTR */
1577 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1578 } /* Note change no line if hupcl is off */
1579 mutex_unlock(&port->serial->disc_mutex);
1580
1581 /* cancel any scheduled reading */
1582 cancel_delayed_work(&priv->rx_work);
1583 flush_scheduled_work();
1584
1585 /* shutdown our bulk read */
1586 usb_kill_urb(port->read_urb);
1587 } /* ftdi_close */
1588
1589
1590
1591 /* The SIO requires the first byte to have:
1592 * B0 1
1593 * B1 0
1594 * B2..7 length of message excluding byte 0
1595 *
1596 * The new devices do not require this byte
1597 */
1598 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
1599 const unsigned char *buf, int count)
1600 { /* ftdi_write */
1601 struct ftdi_private *priv = usb_get_serial_port_data(port);
1602 struct urb *urb;
1603 unsigned char *buffer;
1604 int data_offset ; /* will be 1 for the SIO and 0 otherwise */
1605 int status;
1606 int transfer_size;
1607 unsigned long flags;
1608
1609 dbg("%s port %d, %d bytes", __func__, port->number, count);
1610
1611 if (count == 0) {
1612 dbg("write request of 0 bytes");
1613 return 0;
1614 }
1615 spin_lock_irqsave(&priv->tx_lock, flags);
1616 if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) {
1617 spin_unlock_irqrestore(&priv->tx_lock, flags);
1618 dbg("%s - write limit hit\n", __func__);
1619 return 0;
1620 }
1621 priv->tx_outstanding_urbs++;
1622 spin_unlock_irqrestore(&priv->tx_lock, flags);
1623
1624 data_offset = priv->write_offset;
1625 dbg("data_offset set to %d", data_offset);
1626
1627 /* Determine total transfer size */
1628 transfer_size = count;
1629 if (data_offset > 0) {
1630 /* Original sio needs control bytes too... */
1631 transfer_size += (data_offset *
1632 ((count + (PKTSZ - 1 - data_offset)) /
1633 (PKTSZ - data_offset)));
1634 }
1635
1636 buffer = kmalloc(transfer_size, GFP_ATOMIC);
1637 if (!buffer) {
1638 dev_err(&port->dev,
1639 "%s ran out of kernel memory for urb ...\n", __func__);
1640 count = -ENOMEM;
1641 goto error_no_buffer;
1642 }
1643
1644 urb = usb_alloc_urb(0, GFP_ATOMIC);
1645 if (!urb) {
1646 dev_err(&port->dev, "%s - no more free urbs\n", __func__);
1647 count = -ENOMEM;
1648 goto error_no_urb;
1649 }
1650
1651 /* Copy data */
1652 if (data_offset > 0) {
1653 /* Original sio requires control byte at start of
1654 each packet. */
1655 int user_pktsz = PKTSZ - data_offset;
1656 int todo = count;
1657 unsigned char *first_byte = buffer;
1658 const unsigned char *current_position = buf;
1659
1660 while (todo > 0) {
1661 if (user_pktsz > todo)
1662 user_pktsz = todo;
1663 /* Write the control byte at the front of the packet*/
1664 *first_byte = 1 | ((user_pktsz) << 2);
1665 /* Copy data for packet */
1666 memcpy(first_byte + data_offset,
1667 current_position, user_pktsz);
1668 first_byte += user_pktsz + data_offset;
1669 current_position += user_pktsz;
1670 todo -= user_pktsz;
1671 }
1672 } else {
1673 /* No control byte required. */
1674 /* Copy in the data to send */
1675 memcpy(buffer, buf, count);
1676 }
1677
1678 usb_serial_debug_data(debug, &port->dev, __func__,
1679 transfer_size, buffer);
1680
1681 /* fill the buffer and send it */
1682 usb_fill_bulk_urb(urb, port->serial->dev,
1683 usb_sndbulkpipe(port->serial->dev,
1684 port->bulk_out_endpointAddress),
1685 buffer, transfer_size,
1686 ftdi_write_bulk_callback, port);
1687
1688 status = usb_submit_urb(urb, GFP_ATOMIC);
1689 if (status) {
1690 dev_err(&port->dev,
1691 "%s - failed submitting write urb, error %d\n",
1692 __func__, status);
1693 count = status;
1694 goto error;
1695 } else {
1696 spin_lock_irqsave(&priv->tx_lock, flags);
1697 priv->tx_outstanding_bytes += count;
1698 priv->tx_bytes += count;
1699 spin_unlock_irqrestore(&priv->tx_lock, flags);
1700 }
1701
1702 /* we are done with this urb, so let the host driver
1703 * really free it when it is finished with it */
1704 usb_free_urb(urb);
1705
1706 dbg("%s write returning: %d", __func__, count);
1707 return count;
1708 error:
1709 usb_free_urb(urb);
1710 error_no_urb:
1711 kfree(buffer);
1712 error_no_buffer:
1713 spin_lock_irqsave(&priv->tx_lock, flags);
1714 priv->tx_outstanding_urbs--;
1715 spin_unlock_irqrestore(&priv->tx_lock, flags);
1716 return count;
1717 } /* ftdi_write */
1718
1719
1720 /* This function may get called when the device is closed */
1721
1722 static void ftdi_write_bulk_callback(struct urb *urb)
1723 {
1724 unsigned long flags;
1725 struct usb_serial_port *port = urb->context;
1726 struct ftdi_private *priv;
1727 int data_offset; /* will be 1 for the SIO and 0 otherwise */
1728 unsigned long countback;
1729 int status = urb->status;
1730
1731 /* free up the transfer buffer, as usb_free_urb() does not do this */
1732 kfree(urb->transfer_buffer);
1733
1734 dbg("%s - port %d", __func__, port->number);
1735
1736 if (status) {
1737 dbg("nonzero write bulk status received: %d", status);
1738 return;
1739 }
1740
1741 priv = usb_get_serial_port_data(port);
1742 if (!priv) {
1743 dbg("%s - bad port private data pointer - exiting", __func__);
1744 return;
1745 }
1746 /* account for transferred data */
1747 countback = urb->actual_length;
1748 data_offset = priv->write_offset;
1749 if (data_offset > 0) {
1750 /* Subtract the control bytes */
1751 countback -= (data_offset * DIV_ROUND_UP(countback, PKTSZ));
1752 }
1753 spin_lock_irqsave(&priv->tx_lock, flags);
1754 --priv->tx_outstanding_urbs;
1755 priv->tx_outstanding_bytes -= countback;
1756 spin_unlock_irqrestore(&priv->tx_lock, flags);
1757
1758 usb_serial_port_softint(port);
1759 } /* ftdi_write_bulk_callback */
1760
1761
1762 static int ftdi_write_room(struct tty_struct *tty)
1763 {
1764 struct usb_serial_port *port = tty->driver_data;
1765 struct ftdi_private *priv = usb_get_serial_port_data(port);
1766 int room;
1767 unsigned long flags;
1768
1769 dbg("%s - port %d", __func__, port->number);
1770
1771 spin_lock_irqsave(&priv->tx_lock, flags);
1772 if (priv->tx_outstanding_urbs < URB_UPPER_LIMIT) {
1773 /*
1774 * We really can take anything the user throws at us
1775 * but let's pick a nice big number to tell the tty
1776 * layer that we have lots of free space
1777 */
1778 room = 2048;
1779 } else {
1780 room = 0;
1781 }
1782 spin_unlock_irqrestore(&priv->tx_lock, flags);
1783 return room;
1784 }
1785
1786 static int ftdi_chars_in_buffer(struct tty_struct *tty)
1787 {
1788 struct usb_serial_port *port = tty->driver_data;
1789 struct ftdi_private *priv = usb_get_serial_port_data(port);
1790 int buffered;
1791 unsigned long flags;
1792
1793 dbg("%s - port %d", __func__, port->number);
1794
1795 spin_lock_irqsave(&priv->tx_lock, flags);
1796 buffered = (int)priv->tx_outstanding_bytes;
1797 spin_unlock_irqrestore(&priv->tx_lock, flags);
1798 if (buffered < 0) {
1799 dev_err(&port->dev, "%s outstanding tx bytes is negative!\n",
1800 __func__);
1801 buffered = 0;
1802 }
1803 return buffered;
1804 }
1805
1806 static void ftdi_read_bulk_callback(struct urb *urb)
1807 {
1808 struct usb_serial_port *port = urb->context;
1809 struct tty_struct *tty;
1810 struct ftdi_private *priv;
1811 unsigned long countread;
1812 unsigned long flags;
1813 int status = urb->status;
1814
1815 if (urb->number_of_packets > 0) {
1816 dev_err(&port->dev, "%s transfer_buffer_length %d "
1817 "actual_length %d number of packets %d\n", __func__,
1818 urb->transfer_buffer_length,
1819 urb->actual_length, urb->number_of_packets);
1820 dev_err(&port->dev, "%s transfer_flags %x\n", __func__,
1821 urb->transfer_flags);
1822 }
1823
1824 dbg("%s - port %d", __func__, port->number);
1825
1826 if (port->port.count <= 0)
1827 return;
1828
1829 tty = tty_port_tty_get(&port->port);
1830 if (!tty) {
1831 dbg("%s - bad tty pointer - exiting", __func__);
1832 return;
1833 }
1834
1835 priv = usb_get_serial_port_data(port);
1836 if (!priv) {
1837 dbg("%s - bad port private data pointer - exiting", __func__);
1838 goto out;
1839 }
1840
1841 if (urb != port->read_urb)
1842 dev_err(&port->dev, "%s - Not my urb!\n", __func__);
1843
1844 if (status) {
1845 /* This will happen at close every time so it is a dbg not an
1846 err */
1847 dbg("(this is ok on close) nonzero read bulk status received: %d", status);
1848 goto out;
1849 }
1850
1851 /* count data bytes, but not status bytes */
1852 countread = urb->actual_length;
1853 countread -= 2 * DIV_ROUND_UP(countread, PKTSZ);
1854 spin_lock_irqsave(&priv->rx_lock, flags);
1855 priv->rx_bytes += countread;
1856 spin_unlock_irqrestore(&priv->rx_lock, flags);
1857
1858 ftdi_process_read(&priv->rx_work.work);
1859 out:
1860 tty_kref_put(tty);
1861 } /* ftdi_read_bulk_callback */
1862
1863
1864 static void ftdi_process_read(struct work_struct *work)
1865 { /* ftdi_process_read */
1866 struct ftdi_private *priv =
1867 container_of(work, struct ftdi_private, rx_work.work);
1868 struct usb_serial_port *port = priv->port;
1869 struct urb *urb;
1870 struct tty_struct *tty;
1871 char error_flag;
1872 unsigned char *data;
1873
1874 int i;
1875 int result;
1876 int need_flip;
1877 int packet_offset;
1878 unsigned long flags;
1879
1880 dbg("%s - port %d", __func__, port->number);
1881
1882 if (port->port.count <= 0)
1883 return;
1884
1885 tty = tty_port_tty_get(&port->port);
1886 if (!tty) {
1887 dbg("%s - bad tty pointer - exiting", __func__);
1888 return;
1889 }
1890
1891 priv = usb_get_serial_port_data(port);
1892 if (!priv) {
1893 dbg("%s - bad port private data pointer - exiting", __func__);
1894 goto out;
1895 }
1896
1897 urb = port->read_urb;
1898 if (!urb) {
1899 dbg("%s - bad read_urb pointer - exiting", __func__);
1900 goto out;
1901 }
1902
1903 data = urb->transfer_buffer;
1904
1905 if (priv->rx_processed) {
1906 dbg("%s - already processed: %d bytes, %d remain", __func__,
1907 priv->rx_processed,
1908 urb->actual_length - priv->rx_processed);
1909 } else {
1910 /* The first two bytes of every read packet are status */
1911 if (urb->actual_length > 2)
1912 usb_serial_debug_data(debug, &port->dev, __func__,
1913 urb->actual_length, data);
1914 else
1915 dbg("Status only: %03oo %03oo", data[0], data[1]);
1916 }
1917
1918
1919 /* TO DO -- check for hung up line and handle appropriately: */
1920 /* send hangup */
1921 /* See acm.c - you do a tty_hangup - eg tty_hangup(tty) */
1922 /* if CD is dropped and the line is not CLOCAL then we should hangup */
1923
1924 need_flip = 0;
1925 for (packet_offset = priv->rx_processed;
1926 packet_offset < urb->actual_length; packet_offset += PKTSZ) {
1927 int length;
1928
1929 /* Compare new line status to the old one, signal if different/
1930 N.B. packet may be processed more than once, but differences
1931 are only processed once. */
1932 if (priv != NULL) {
1933 char new_status = data[packet_offset + 0] &
1934 FTDI_STATUS_B0_MASK;
1935 if (new_status != priv->prev_status) {
1936 priv->diff_status |=
1937 new_status ^ priv->prev_status;
1938 wake_up_interruptible(&priv->delta_msr_wait);
1939 priv->prev_status = new_status;
1940 }
1941 }
1942
1943 length = min(PKTSZ, urb->actual_length-packet_offset)-2;
1944 if (length < 0) {
1945 dev_err(&port->dev, "%s - bad packet length: %d\n",
1946 __func__, length+2);
1947 length = 0;
1948 }
1949
1950 if (priv->rx_flags & THROTTLED) {
1951 dbg("%s - throttled", __func__);
1952 break;
1953 }
1954 if (tty_buffer_request_room(tty, length) < length) {
1955 /* break out & wait for throttling/unthrottling to
1956 happen */
1957 dbg("%s - receive room low", __func__);
1958 break;
1959 }
1960
1961 /* Handle errors and break */
1962 error_flag = TTY_NORMAL;
1963 /* Although the device uses a bitmask and hence can have
1964 multiple errors on a packet - the order here sets the
1965 priority the error is returned to the tty layer */
1966
1967 if (data[packet_offset+1] & FTDI_RS_OE) {
1968 error_flag = TTY_OVERRUN;
1969 dbg("OVERRRUN error");
1970 }
1971 if (data[packet_offset+1] & FTDI_RS_BI) {
1972 error_flag = TTY_BREAK;
1973 dbg("BREAK received");
1974 }
1975 if (data[packet_offset+1] & FTDI_RS_PE) {
1976 error_flag = TTY_PARITY;
1977 dbg("PARITY error");
1978 }
1979 if (data[packet_offset+1] & FTDI_RS_FE) {
1980 error_flag = TTY_FRAME;
1981 dbg("FRAMING error");
1982 }
1983 if (length > 0) {
1984 for (i = 2; i < length+2; i++) {
1985 /* Note that the error flag is duplicated for
1986 every character received since we don't know
1987 which character it applied to */
1988 tty_insert_flip_char(tty,
1989 data[packet_offset + i], error_flag);
1990 }
1991 need_flip = 1;
1992 }
1993
1994 #ifdef NOT_CORRECT_BUT_KEEPING_IT_FOR_NOW
1995 /* if a parity error is detected you get status packets forever
1996 until a character is sent without a parity error.
1997 This doesn't work well since the application receives a
1998 never ending stream of bad data - even though new data
1999 hasn't been sent. Therefore I (bill) have taken this out.
2000 However - this might make sense for framing errors and so on
2001 so I am leaving the code in for now.
2002 */
2003 else {
2004 if (error_flag != TTY_NORMAL) {
2005 dbg("error_flag is not normal");
2006 /* In this case it is just status - if that is
2007 an error send a bad character */
2008 if (tty->flip.count >= TTY_FLIPBUF_SIZE)
2009 tty_flip_buffer_push(tty);
2010 tty_insert_flip_char(tty, 0xff, error_flag);
2011 need_flip = 1;
2012 }
2013 }
2014 #endif
2015 } /* "for(packet_offset=0..." */
2016
2017 /* Low latency */
2018 if (need_flip)
2019 tty_flip_buffer_push(tty);
2020
2021 if (packet_offset < urb->actual_length) {
2022 /* not completely processed - record progress */
2023 priv->rx_processed = packet_offset;
2024 dbg("%s - incomplete, %d bytes processed, %d remain",
2025 __func__, packet_offset,
2026 urb->actual_length - packet_offset);
2027 /* check if we were throttled while processing */
2028 spin_lock_irqsave(&priv->rx_lock, flags);
2029 if (priv->rx_flags & THROTTLED) {
2030 priv->rx_flags |= ACTUALLY_THROTTLED;
2031 spin_unlock_irqrestore(&priv->rx_lock, flags);
2032 dbg("%s - deferring remainder until unthrottled",
2033 __func__);
2034 goto out;
2035 }
2036 spin_unlock_irqrestore(&priv->rx_lock, flags);
2037 /* if the port is closed stop trying to read */
2038 if (port->port.count > 0)
2039 /* delay processing of remainder */
2040 schedule_delayed_work(&priv->rx_work, 1);
2041 else
2042 dbg("%s - port is closed", __func__);
2043 goto out;
2044 }
2045
2046 /* urb is completely processed */
2047 priv->rx_processed = 0;
2048
2049 /* if the port is closed stop trying to read */
2050 if (port->port.count > 0) {
2051 /* Continue trying to always read */
2052 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
2053 usb_rcvbulkpipe(port->serial->dev,
2054 port->bulk_in_endpointAddress),
2055 port->read_urb->transfer_buffer,
2056 port->read_urb->transfer_buffer_length,
2057 ftdi_read_bulk_callback, port);
2058
2059 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
2060 if (result)
2061 dev_err(&port->dev,
2062 "%s - failed resubmitting read urb, error %d\n",
2063 __func__, result);
2064 }
2065 out:
2066 tty_kref_put(tty);
2067 } /* ftdi_process_read */
2068
2069
2070 static void ftdi_break_ctl(struct tty_struct *tty, int break_state)
2071 {
2072 struct usb_serial_port *port = tty->driver_data;
2073 struct ftdi_private *priv = usb_get_serial_port_data(port);
2074 __u16 urb_value = 0;
2075 char buf[1];
2076
2077 /* break_state = -1 to turn on break, and 0 to turn off break */
2078 /* see drivers/char/tty_io.c to see it used */
2079 /* last_set_data_urb_value NEVER has the break bit set in it */
2080
2081 if (break_state)
2082 urb_value = priv->last_set_data_urb_value | FTDI_SIO_SET_BREAK;
2083 else
2084 urb_value = priv->last_set_data_urb_value;
2085
2086 if (usb_control_msg(port->serial->dev,
2087 usb_sndctrlpipe(port->serial->dev, 0),
2088 FTDI_SIO_SET_DATA_REQUEST,
2089 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2090 urb_value , priv->interface,
2091 buf, 0, WDR_TIMEOUT) < 0) {
2092 dev_err(&port->dev, "%s FAILED to enable/disable break state "
2093 "(state was %d)\n", __func__, break_state);
2094 }
2095
2096 dbg("%s break state is %d - urb is %d", __func__,
2097 break_state, urb_value);
2098
2099 }
2100
2101
2102 /* old_termios contains the original termios settings and tty->termios contains
2103 * the new setting to be used
2104 * WARNING: set_termios calls this with old_termios in kernel space
2105 */
2106
2107 static void ftdi_set_termios(struct tty_struct *tty,
2108 struct usb_serial_port *port, struct ktermios *old_termios)
2109 { /* ftdi_termios */
2110 struct usb_device *dev = port->serial->dev;
2111 struct ftdi_private *priv = usb_get_serial_port_data(port);
2112 struct ktermios *termios = tty->termios;
2113 unsigned int cflag = termios->c_cflag;
2114 __u16 urb_value; /* will hold the new flags */
2115 char buf[1]; /* Perhaps I should dynamically alloc this? */
2116
2117 /* Added for xon/xoff support */
2118 unsigned int iflag = termios->c_iflag;
2119 unsigned char vstop;
2120 unsigned char vstart;
2121
2122 dbg("%s", __func__);
2123
2124 /* Force baud rate if this device requires it, unless it is set to
2125 B0. */
2126 if (priv->force_baud && ((termios->c_cflag & CBAUD) != B0)) {
2127 dbg("%s: forcing baud rate for this device", __func__);
2128 tty_encode_baud_rate(tty, priv->force_baud,
2129 priv->force_baud);
2130 }
2131
2132 /* Force RTS-CTS if this device requires it. */
2133 if (priv->force_rtscts) {
2134 dbg("%s: forcing rtscts for this device", __func__);
2135 termios->c_cflag |= CRTSCTS;
2136 }
2137
2138 cflag = termios->c_cflag;
2139
2140 /* FIXME -For this cut I don't care if the line is really changing or
2141 not - so just do the change regardless - should be able to
2142 compare old_termios and tty->termios */
2143 /* NOTE These routines can get interrupted by
2144 ftdi_sio_read_bulk_callback - need to examine what this means -
2145 don't see any problems yet */
2146
2147 /* Set number of data bits, parity, stop bits */
2148
2149 termios->c_cflag &= ~CMSPAR;
2150
2151 urb_value = 0;
2152 urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 :
2153 FTDI_SIO_SET_DATA_STOP_BITS_1);
2154 urb_value |= (cflag & PARENB ?
2155 (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD :
2156 FTDI_SIO_SET_DATA_PARITY_EVEN) :
2157 FTDI_SIO_SET_DATA_PARITY_NONE);
2158 if (cflag & CSIZE) {
2159 switch (cflag & CSIZE) {
2160 case CS5: urb_value |= 5; dbg("Setting CS5"); break;
2161 case CS6: urb_value |= 6; dbg("Setting CS6"); break;
2162 case CS7: urb_value |= 7; dbg("Setting CS7"); break;
2163 case CS8: urb_value |= 8; dbg("Setting CS8"); break;
2164 default:
2165 dev_err(&port->dev, "CSIZE was set but not CS5-CS8\n");
2166 }
2167 }
2168
2169 /* This is needed by the break command since it uses the same command
2170 - but is or'ed with this value */
2171 priv->last_set_data_urb_value = urb_value;
2172
2173 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2174 FTDI_SIO_SET_DATA_REQUEST,
2175 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2176 urb_value , priv->interface,
2177 buf, 0, WDR_SHORT_TIMEOUT) < 0) {
2178 dev_err(&port->dev, "%s FAILED to set "
2179 "databits/stopbits/parity\n", __func__);
2180 }
2181
2182 /* Now do the baudrate */
2183 if ((cflag & CBAUD) == B0) {
2184 /* Disable flow control */
2185 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2186 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2187 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2188 0, priv->interface,
2189 buf, 0, WDR_TIMEOUT) < 0) {
2190 dev_err(&port->dev,
2191 "%s error from disable flowcontrol urb\n",
2192 __func__);
2193 }
2194 /* Drop RTS and DTR */
2195 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2196 } else {
2197 /* set the baudrate determined before */
2198 if (change_speed(tty, port))
2199 dev_err(&port->dev, "%s urb failed to set baudrate\n",
2200 __func__);
2201 /* Ensure RTS and DTR are raised when baudrate changed from 0 */
2202 if (!old_termios || (old_termios->c_cflag & CBAUD) == B0)
2203 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2204 }
2205
2206 /* Set flow control */
2207 /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */
2208 if (cflag & CRTSCTS) {
2209 dbg("%s Setting to CRTSCTS flow control", __func__);
2210 if (usb_control_msg(dev,
2211 usb_sndctrlpipe(dev, 0),
2212 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2213 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2214 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface),
2215 buf, 0, WDR_TIMEOUT) < 0) {
2216 dev_err(&port->dev,
2217 "urb failed to set to rts/cts flow control\n");
2218 }
2219
2220 } else {
2221 /*
2222 * Xon/Xoff code
2223 *
2224 * Check the IXOFF status in the iflag component of the
2225 * termios structure. If IXOFF is not set, the pre-xon/xoff
2226 * code is executed.
2227 */
2228 if (iflag & IXOFF) {
2229 dbg("%s request to enable xonxoff iflag=%04x",
2230 __func__, iflag);
2231 /* Try to enable the XON/XOFF on the ftdi_sio
2232 * Set the vstart and vstop -- could have been done up
2233 * above where a lot of other dereferencing is done but
2234 * that would be very inefficient as vstart and vstop
2235 * are not always needed.
2236 */
2237 vstart = termios->c_cc[VSTART];
2238 vstop = termios->c_cc[VSTOP];
2239 urb_value = (vstop << 8) | (vstart);
2240
2241 if (usb_control_msg(dev,
2242 usb_sndctrlpipe(dev, 0),
2243 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2244 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2245 urb_value , (FTDI_SIO_XON_XOFF_HS
2246 | priv->interface),
2247 buf, 0, WDR_TIMEOUT) < 0) {
2248 dev_err(&port->dev, "urb failed to set to "
2249 "xon/xoff flow control\n");
2250 }
2251 } else {
2252 /* else clause to only run if cflag ! CRTSCTS and iflag
2253 * ! XOFF. CHECKME Assuming XON/XOFF handled by tty
2254 * stack - not by device */
2255 dbg("%s Turning off hardware flow control", __func__);
2256 if (usb_control_msg(dev,
2257 usb_sndctrlpipe(dev, 0),
2258 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2259 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2260 0, priv->interface,
2261 buf, 0, WDR_TIMEOUT) < 0) {
2262 dev_err(&port->dev,
2263 "urb failed to clear flow control\n");
2264 }
2265 }
2266
2267 }
2268 return;
2269 }
2270
2271 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
2272 {
2273 struct usb_serial_port *port = tty->driver_data;
2274 struct ftdi_private *priv = usb_get_serial_port_data(port);
2275 unsigned char buf[2];
2276 int ret;
2277
2278 dbg("%s TIOCMGET", __func__);
2279 switch (priv->chip_type) {
2280 case SIO:
2281 /* Request the status from the device */
2282 ret = usb_control_msg(port->serial->dev,
2283 usb_rcvctrlpipe(port->serial->dev, 0),
2284 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2285 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2286 0, 0,
2287 buf, 1, WDR_TIMEOUT);
2288 if (ret < 0) {
2289 dbg("%s Could not get modem status of device - err: %d", __func__,
2290 ret);
2291 return ret;
2292 }
2293 break;
2294 case FT8U232AM:
2295 case FT232BM:
2296 case FT2232C:
2297 case FT232RL:
2298 /* the 8U232AM returns a two byte value (the sio is a 1 byte
2299 value) - in the same format as the data returned from the in
2300 point */
2301 ret = usb_control_msg(port->serial->dev,
2302 usb_rcvctrlpipe(port->serial->dev, 0),
2303 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2304 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2305 0, priv->interface,
2306 buf, 2, WDR_TIMEOUT);
2307 if (ret < 0) {
2308 dbg("%s Could not get modem status of device - err: %d", __func__,
2309 ret);
2310 return ret;
2311 }
2312 break;
2313 default:
2314 return -EFAULT;
2315 break;
2316 }
2317
2318 return (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
2319 (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) |
2320 (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) |
2321 (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0) |
2322 priv->last_dtr_rts;
2323 }
2324
2325 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
2326 unsigned int set, unsigned int clear)
2327 {
2328 struct usb_serial_port *port = tty->driver_data;
2329 dbg("%s TIOCMSET", __func__);
2330 return update_mctrl(port, set, clear);
2331 }
2332
2333
2334 static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
2335 unsigned int cmd, unsigned long arg)
2336 {
2337 struct usb_serial_port *port = tty->driver_data;
2338 struct ftdi_private *priv = usb_get_serial_port_data(port);
2339
2340 dbg("%s cmd 0x%04x", __func__, cmd);
2341
2342 /* Based on code from acm.c and others */
2343 switch (cmd) {
2344
2345 case TIOCGSERIAL: /* gets serial port data */
2346 return get_serial_info(port,
2347 (struct serial_struct __user *) arg);
2348
2349 case TIOCSSERIAL: /* sets serial port data */
2350 return set_serial_info(tty, port,
2351 (struct serial_struct __user *) arg);
2352
2353 /*
2354 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
2355 * - mask passed in arg for lines of interest
2356 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
2357 * Caller should use TIOCGICOUNT to see which one it was.
2358 *
2359 * This code is borrowed from linux/drivers/char/serial.c
2360 */
2361 case TIOCMIWAIT:
2362 while (priv != NULL) {
2363 interruptible_sleep_on(&priv->delta_msr_wait);
2364 /* see if a signal did it */
2365 if (signal_pending(current))
2366 return -ERESTARTSYS;
2367 else {
2368 char diff = priv->diff_status;
2369
2370 if (diff == 0)
2371 return -EIO; /* no change => error */
2372
2373 /* Consume all events */
2374 priv->diff_status = 0;
2375
2376 /* Return 0 if caller wanted to know about
2377 these bits */
2378 if (((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) ||
2379 ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) ||
2380 ((arg & TIOCM_CD) && (diff & FTDI_RS0_RLSD)) ||
2381 ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS))) {
2382 return 0;
2383 }
2384 /*
2385 * Otherwise caller can't care less about what
2386 * happened,and so we continue to wait for more
2387 * events.
2388 */
2389 }
2390 }
2391 return 0;
2392 default:
2393 break;
2394 }
2395 /* This is not necessarily an error - turns out the higher layers
2396 * will do some ioctls themselves (see comment above)
2397 */
2398 dbg("%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h", __func__, cmd);
2399 return -ENOIOCTLCMD;
2400 }
2401
2402 static void ftdi_throttle(struct tty_struct *tty)
2403 {
2404 struct usb_serial_port *port = tty->driver_data;
2405 struct ftdi_private *priv = usb_get_serial_port_data(port);
2406 unsigned long flags;
2407
2408 dbg("%s - port %d", __func__, port->number);
2409
2410 spin_lock_irqsave(&priv->rx_lock, flags);
2411 priv->rx_flags |= THROTTLED;
2412 spin_unlock_irqrestore(&priv->rx_lock, flags);
2413 }
2414
2415
2416 static void ftdi_unthrottle(struct tty_struct *tty)
2417 {
2418 struct usb_serial_port *port = tty->driver_data;
2419 struct ftdi_private *priv = usb_get_serial_port_data(port);
2420 int actually_throttled;
2421 unsigned long flags;
2422
2423 dbg("%s - port %d", __func__, port->number);
2424
2425 spin_lock_irqsave(&priv->rx_lock, flags);
2426 actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED;
2427 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
2428 spin_unlock_irqrestore(&priv->rx_lock, flags);
2429
2430 if (actually_throttled)
2431 schedule_delayed_work(&priv->rx_work, 0);
2432 }
2433
2434 static int __init ftdi_init(void)
2435 {
2436 int retval;
2437
2438 dbg("%s", __func__);
2439 if (vendor > 0 && product > 0) {
2440 /* Add user specified VID/PID to reserved element of table. */
2441 int i;
2442 for (i = 0; id_table_combined[i].idVendor; i++)
2443 ;
2444 id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
2445 id_table_combined[i].idVendor = vendor;
2446 id_table_combined[i].idProduct = product;
2447 }
2448 retval = usb_serial_register(&ftdi_sio_device);
2449 if (retval)
2450 goto failed_sio_register;
2451 retval = usb_register(&ftdi_driver);
2452 if (retval)
2453 goto failed_usb_register;
2454
2455 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
2456 DRIVER_DESC "\n");
2457 return 0;
2458 failed_usb_register:
2459 usb_serial_deregister(&ftdi_sio_device);
2460 failed_sio_register:
2461 return retval;
2462 }
2463
2464
2465 static void __exit ftdi_exit(void)
2466 {
2467
2468 dbg("%s", __func__);
2469
2470 usb_deregister(&ftdi_driver);
2471 usb_serial_deregister(&ftdi_sio_device);
2472
2473 }
2474
2475
2476 module_init(ftdi_init);
2477 module_exit(ftdi_exit);
2478
2479 MODULE_AUTHOR(DRIVER_AUTHOR);
2480 MODULE_DESCRIPTION(DRIVER_DESC);
2481 MODULE_LICENSE("GPL");
2482
2483 module_param(debug, bool, S_IRUGO | S_IWUSR);
2484 MODULE_PARM_DESC(debug, "Debug enabled or not");
2485 module_param(vendor, ushort, 0);
2486 MODULE_PARM_DESC(vendor, "User specified vendor ID (default="
2487 __MODULE_STRING(FTDI_VID)")");
2488 module_param(product, ushort, 0);
2489 MODULE_PARM_DESC(product, "User specified product ID");
2490
Linux kernel - Deliverables
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