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[mirror_ubuntu-zesty-kernel.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 driver
16 *
17 * See http://ftdi-usb-sio.sourceforge.net for upto date testing info
18 * and extra documentation
19 *
20 * Change entries from 2004 and earlier can be found in versions of this
21 * file in kernel versions prior to the 2.6.24 release.
22 *
23 */
24
25 /* Bill Ryder - bryder@sgi.com - wrote the FTDI_SIO implementation */
26 /* Thanx to FTDI for so kindly providing details of the protocol required */
27 /* to talk to the device */
28 /* Thanx to gkh and the rest of the usb dev group for all code I have assimilated :-) */
29
30 #include <linux/kernel.h>
31 #include <linux/errno.h>
32 #include <linux/init.h>
33 #include <linux/slab.h>
34 #include <linux/tty.h>
35 #include <linux/tty_driver.h>
36 #include <linux/tty_flip.h>
37 #include <linux/module.h>
38 #include <linux/spinlock.h>
39 #include <asm/uaccess.h>
40 #include <linux/usb.h>
41 #include <linux/serial.h>
42 #include <linux/usb/serial.h>
43 #include "ftdi_sio.h"
44
45 /*
46 * Version Information
47 */
48 #define DRIVER_VERSION "v1.4.3"
49 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober <kuba@mareimbrium.org>"
50 #define DRIVER_DESC "USB FTDI Serial Converters Driver"
51
52 static int debug;
53 static __u16 vendor = FTDI_VID;
54 static __u16 product;
55
56 struct ftdi_private {
57 ftdi_chip_type_t chip_type;
58 /* type of the device, either SIO or FT8U232AM */
59 int baud_base; /* baud base clock for divisor setting */
60 int custom_divisor; /* custom_divisor kludge, this is for baud_base (different from what goes to the chip!) */
61 __u16 last_set_data_urb_value ;
62 /* the last data state set - needed for doing a break */
63 int write_offset; /* This is the offset in the usb data block to write the serial data -
64 * it is different between devices
65 */
66 int flags; /* some ASYNC_xxxx flags are supported */
67 unsigned long last_dtr_rts; /* saved modem control outputs */
68 wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
69 char prev_status, diff_status; /* Used for TIOCMIWAIT */
70 __u8 rx_flags; /* receive state flags (throttling) */
71 spinlock_t rx_lock; /* spinlock for receive state */
72 struct delayed_work rx_work;
73 struct usb_serial_port *port;
74 int rx_processed;
75 unsigned long rx_bytes;
76
77 __u16 interface; /* FT2232C port interface (0 for FT232/245) */
78
79 speed_t force_baud; /* if non-zero, force the baud rate to this value */
80 int force_rtscts; /* if non-zero, force RTS-CTS to always be enabled */
81
82 spinlock_t tx_lock; /* spinlock for transmit state */
83 unsigned long tx_bytes;
84 unsigned long tx_outstanding_bytes;
85 unsigned long tx_outstanding_urbs;
86 };
87
88 /* struct ftdi_sio_quirk is used by devices requiring special attention. */
89 struct ftdi_sio_quirk {
90 int (*probe)(struct usb_serial *);
91 void (*port_probe)(struct ftdi_private *); /* Special settings for probed ports. */
92 };
93
94 static int ftdi_jtag_probe (struct usb_serial *serial);
95 static int ftdi_mtxorb_hack_setup (struct usb_serial *serial);
96 static void ftdi_USB_UIRT_setup (struct ftdi_private *priv);
97 static void ftdi_HE_TIRA1_setup (struct ftdi_private *priv);
98
99 static struct ftdi_sio_quirk ftdi_jtag_quirk = {
100 .probe = ftdi_jtag_probe,
101 };
102
103 static struct ftdi_sio_quirk ftdi_mtxorb_hack_quirk = {
104 .probe = ftdi_mtxorb_hack_setup,
105 };
106
107 static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = {
108 .port_probe = ftdi_USB_UIRT_setup,
109 };
110
111 static struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = {
112 .port_probe = ftdi_HE_TIRA1_setup,
113 };
114
115 /*
116 * The 8U232AM has the same API as the sio except for:
117 * - it can support MUCH higher baudrates; up to:
118 * o 921600 for RS232 and 2000000 for RS422/485 at 48MHz
119 * o 230400 at 12MHz
120 * so .. 8U232AM's baudrate setting codes are different
121 * - it has a two byte status code.
122 * - it returns characters every 16ms (the FTDI does it every 40ms)
123 *
124 * the bcdDevice value is used to differentiate FT232BM and FT245BM from
125 * the earlier FT8U232AM and FT8U232BM. For now, include all known VID/PID
126 * combinations in both tables.
127 * FIXME: perhaps bcdDevice can also identify 12MHz FT8U232AM devices,
128 * but I don't know if those ever went into mass production. [Ian Abbott]
129 */
130
131
132
133 static struct usb_device_id id_table_combined [] = {
134 { USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) },
135 { USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) },
136 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_0_PID) },
137 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_1_PID) },
138 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_2_PID) },
139 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_3_PID) },
140 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_4_PID) },
141 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_5_PID) },
142 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_6_PID) },
143 { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_7_PID) },
144 { USB_DEVICE(FTDI_VID, FTDI_ACTZWAVE_PID) },
145 { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) },
146 { USB_DEVICE(FTDI_VID, FTDI_IPLUS_PID) },
147 { USB_DEVICE(FTDI_VID, FTDI_IPLUS2_PID) },
148 { USB_DEVICE(FTDI_VID, FTDI_DMX4ALL) },
149 { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) },
150 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) },
151 { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) },
152 { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) },
153 { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) },
154 { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) },
155 { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) },
156 { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) },
157 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) },
158 { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) },
159 { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) },
160 { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) },
161 { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) },
162 { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) },
163 { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) },
164 { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) },
165 { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) },
166 { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) },
167 { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) },
168 { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) },
169 { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) },
170 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) },
171 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) },
172 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) },
173 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) },
174 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) },
175 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) },
176 { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) },
177 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0100_PID) },
178 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0101_PID) },
179 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0102_PID) },
180 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0103_PID) },
181 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0104_PID) },
182 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0105_PID) },
183 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0106_PID) },
184 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0107_PID) },
185 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0108_PID) },
186 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0109_PID) },
187 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_010A_PID) },
188 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_010B_PID) },
189 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_010C_PID) },
190 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_010D_PID) },
191 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_010E_PID) },
192 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_010F_PID) },
193 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0110_PID) },
194 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0111_PID) },
195 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0112_PID) },
196 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0113_PID) },
197 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0114_PID) },
198 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0115_PID) },
199 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0116_PID) },
200 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0117_PID) },
201 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0118_PID) },
202 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0119_PID) },
203 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_011A_PID) },
204 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_011B_PID) },
205 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_011C_PID) },
206 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_011D_PID) },
207 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_011E_PID) },
208 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_011F_PID) },
209 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0120_PID) },
210 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0121_PID) },
211 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0122_PID) },
212 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0123_PID) },
213 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0124_PID) },
214 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0125_PID) },
215 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0126_PID) },
216 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0127_PID),
217 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
218 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0128_PID) },
219 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0129_PID) },
220 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_012A_PID) },
221 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_012B_PID) },
222 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_012C_PID),
223 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
224 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_012D_PID) },
225 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_012E_PID) },
226 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_012F_PID) },
227 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0130_PID) },
228 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0131_PID) },
229 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0132_PID) },
230 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0133_PID) },
231 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0134_PID) },
232 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0135_PID) },
233 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0136_PID) },
234 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0137_PID) },
235 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0138_PID) },
236 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0139_PID) },
237 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_013A_PID) },
238 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_013B_PID) },
239 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_013C_PID) },
240 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_013D_PID) },
241 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_013E_PID) },
242 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_013F_PID) },
243 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0140_PID) },
244 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0141_PID) },
245 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0142_PID) },
246 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0143_PID) },
247 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0144_PID) },
248 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0145_PID) },
249 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0146_PID) },
250 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0147_PID) },
251 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0148_PID) },
252 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0149_PID) },
253 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_014A_PID) },
254 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_014B_PID) },
255 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_014C_PID) },
256 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_014D_PID) },
257 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_014E_PID) },
258 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_014F_PID) },
259 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0150_PID) },
260 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0151_PID) },
261 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0152_PID) },
262 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0153_PID),
263 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
264 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0154_PID),
265 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
266 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0155_PID),
267 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
268 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0156_PID),
269 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
270 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0157_PID),
271 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
272 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0158_PID),
273 .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
274 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0159_PID) },
275 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_015A_PID) },
276 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_015B_PID) },
277 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_015C_PID) },
278 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_015D_PID) },
279 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_015E_PID) },
280 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_015F_PID) },
281 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0160_PID) },
282 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0161_PID) },
283 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0162_PID) },
284 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0163_PID) },
285 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0164_PID) },
286 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0165_PID) },
287 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0166_PID) },
288 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0167_PID) },
289 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0168_PID) },
290 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0169_PID) },
291 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_016A_PID) },
292 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_016B_PID) },
293 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_016C_PID) },
294 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_016D_PID) },
295 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_016E_PID) },
296 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_016F_PID) },
297 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0170_PID) },
298 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0171_PID) },
299 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0172_PID) },
300 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0173_PID) },
301 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0174_PID) },
302 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0175_PID) },
303 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0176_PID) },
304 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0177_PID) },
305 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0178_PID) },
306 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0179_PID) },
307 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_017A_PID) },
308 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_017B_PID) },
309 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_017C_PID) },
310 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_017D_PID) },
311 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_017E_PID) },
312 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_017F_PID) },
313 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0180_PID) },
314 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0181_PID) },
315 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0182_PID) },
316 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0183_PID) },
317 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0184_PID) },
318 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0185_PID) },
319 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0186_PID) },
320 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0187_PID) },
321 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0188_PID) },
322 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0189_PID) },
323 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_018A_PID) },
324 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_018B_PID) },
325 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_018C_PID) },
326 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_018D_PID) },
327 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_018E_PID) },
328 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_018F_PID) },
329 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0190_PID) },
330 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0191_PID) },
331 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0192_PID) },
332 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0193_PID) },
333 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0194_PID) },
334 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0195_PID) },
335 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0196_PID) },
336 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0197_PID) },
337 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0198_PID) },
338 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_0199_PID) },
339 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_019A_PID) },
340 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_019B_PID) },
341 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_019C_PID) },
342 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_019D_PID) },
343 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_019E_PID) },
344 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_019F_PID) },
345 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01A0_PID) },
346 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01A1_PID) },
347 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01A2_PID) },
348 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01A3_PID) },
349 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01A4_PID) },
350 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01A5_PID) },
351 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01A6_PID) },
352 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01A7_PID) },
353 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01A8_PID) },
354 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01A9_PID) },
355 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01AA_PID) },
356 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01AB_PID) },
357 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01AC_PID) },
358 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01AD_PID) },
359 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01AE_PID) },
360 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01AF_PID) },
361 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01B0_PID) },
362 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01B1_PID) },
363 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01B2_PID) },
364 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01B3_PID) },
365 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01B4_PID) },
366 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01B5_PID) },
367 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01B6_PID) },
368 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01B7_PID) },
369 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01B8_PID) },
370 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01B9_PID) },
371 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01BA_PID) },
372 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01BB_PID) },
373 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01BC_PID) },
374 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01BD_PID) },
375 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01BE_PID) },
376 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01BF_PID) },
377 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01C0_PID) },
378 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01C1_PID) },
379 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01C2_PID) },
380 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01C3_PID) },
381 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01C4_PID) },
382 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01C5_PID) },
383 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01C6_PID) },
384 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01C7_PID) },
385 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01C8_PID) },
386 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01C9_PID) },
387 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01CA_PID) },
388 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01CB_PID) },
389 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01CC_PID) },
390 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01CD_PID) },
391 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01CE_PID) },
392 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01CF_PID) },
393 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01D0_PID) },
394 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01D1_PID) },
395 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01D2_PID) },
396 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01D3_PID) },
397 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01D4_PID) },
398 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01D5_PID) },
399 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01D6_PID) },
400 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01D7_PID) },
401 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01D8_PID) },
402 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01D9_PID) },
403 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01DA_PID) },
404 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01DB_PID) },
405 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01DC_PID) },
406 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01DD_PID) },
407 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01DE_PID) },
408 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01DF_PID) },
409 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01E0_PID) },
410 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01E1_PID) },
411 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01E2_PID) },
412 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01E3_PID) },
413 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01E4_PID) },
414 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01E5_PID) },
415 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01E6_PID) },
416 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01E7_PID) },
417 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01E8_PID) },
418 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01E9_PID) },
419 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01EA_PID) },
420 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01EB_PID) },
421 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01EC_PID) },
422 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01ED_PID) },
423 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01EE_PID) },
424 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01EF_PID) },
425 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01F0_PID) },
426 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01F1_PID) },
427 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01F2_PID) },
428 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01F3_PID) },
429 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01F4_PID) },
430 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01F5_PID) },
431 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01F6_PID) },
432 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01F7_PID) },
433 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01F8_PID) },
434 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01F9_PID) },
435 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01FA_PID) },
436 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01FB_PID) },
437 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01FC_PID) },
438 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01FD_PID) },
439 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01FE_PID) },
440 { USB_DEVICE(MTXORB_VID,MTXORB_FTDI_RANGE_01FF_PID) },
441 { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) },
442 { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) },
443 { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) },
444 { USB_DEVICE(FTDI_VID, FTDI_USBX_707_PID) },
445 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) },
446 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) },
447 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) },
448 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) },
449 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2106_PID) },
450 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) },
451 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) },
452 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) },
453 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) },
454 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) },
455 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) },
456 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) },
457 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) },
458 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) },
459 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) },
460 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) },
461 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) },
462 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) },
463 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) },
464 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) },
465 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) },
466 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) },
467 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) },
468 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) },
469 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) },
470 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) },
471 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) },
472 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) },
473 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) },
474 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) },
475 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) },
476 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) },
477 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) },
478 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) },
479 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) },
480 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) },
481 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) },
482 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) },
483 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) },
484 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) },
485 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) },
486 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) },
487 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) },
488 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) },
489 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) },
490 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) },
491 { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) },
492 { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) },
493 { USB_DEVICE(OCT_VID, OCT_US101_PID) },
494 { USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID),
495 .driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk },
496 { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID),
497 .driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk },
498 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) },
499 { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) },
500 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) },
501 { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) },
502 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) },
503 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) },
504 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) },
505 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) },
506 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) },
507 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) },
508 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) },
509 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) },
510 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) },
511 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) },
512 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) },
513 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) },
514 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) },
515 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) },
516 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) },
517 { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) },
518 { USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) },
519 { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) },
520 { USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) },
521 { USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) },
522 { USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) },
523 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) },
524 { USB_DEVICE(FTDI_VID, FTDI_IBS_US485_PID) },
525 { USB_DEVICE(FTDI_VID, FTDI_IBS_PICPRO_PID) },
526 { USB_DEVICE(FTDI_VID, FTDI_IBS_PCMCIA_PID) },
527 { USB_DEVICE(FTDI_VID, FTDI_IBS_PK1_PID) },
528 { USB_DEVICE(FTDI_VID, FTDI_IBS_RS232MON_PID) },
529 { USB_DEVICE(FTDI_VID, FTDI_IBS_APP70_PID) },
530 { USB_DEVICE(FTDI_VID, FTDI_IBS_PEDO_PID) },
531 { USB_DEVICE(FTDI_VID, FTDI_IBS_PROD_PID) },
532 /*
533 * Due to many user requests for multiple ELV devices we enable
534 * them by default.
535 */
536 { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) },
537 { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) },
538 { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) },
539 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) },
540 { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) },
541 { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) },
542 { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) },
543 { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) },
544 { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) },
545 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) },
546 { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) },
547 { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) },
548 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) },
549 { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) },
550 { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) },
551 { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) },
552 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) },
553 { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) },
554 { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1010PC_PID) },
555 { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) },
556 { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) },
557 { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) },
558 { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) },
559 { USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) },
560 { USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) },
561 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) },
562 { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) },
563 { USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) },
564 { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) },
565 { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) },
566 { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) },
567 { USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) },
568 { USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) },
569 { USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) },
570 { USB_DEVICE(TTI_VID, TTI_QL355P_PID) },
571 { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) },
572 { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) },
573 { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) },
574 { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) },
575 { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) },
576 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) },
577 { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) },
578 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) },
579 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) },
580 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) },
581 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) },
582 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) },
583 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) },
584 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) },
585 { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) },
586 { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
587 { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) },
588 { USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) },
589 { USB_DEVICE(FTDI_VID, FTDI_MHAM_YS_PID) },
590 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) },
591 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) },
592 { USB_DEVICE(FTDI_VID, FTDI_MHAM_IC_PID) },
593 { USB_DEVICE(FTDI_VID, FTDI_MHAM_DB9_PID) },
594 { USB_DEVICE(FTDI_VID, FTDI_MHAM_RS232_PID) },
595 { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y9_PID) },
596 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) },
597 { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) },
598 { USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) },
599 { USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) },
600 { USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) },
601 { USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) },
602 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) },
603 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) },
604 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) },
605 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HRC_PID) },
606 { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16IC_PID) },
607 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) },
608 { USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) },
609 { USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) },
610 { USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) },
611 { USB_DEVICE(FTDI_VID, FTDI_ECLO_COM_1WIRE_PID) },
612 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) },
613 { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) },
614 { USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) },
615 { USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) },
616 { USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) },
617 { USB_DEVICE(ICOM_ID1_VID, ICOM_ID1_PID) },
618 { USB_DEVICE(PAPOUCH_VID, PAPOUCH_TMU_PID) },
619 { USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) },
620 { USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) },
621 { USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) },
622 { USB_DEVICE(TESTO_VID, TESTO_USB_INTERFACE_PID) },
623 { USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) },
624 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) },
625 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) },
626 { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) },
627 { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) },
628 { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
629 { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) },
630 { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) },
631 { USB_DEVICE(FTDI_VID, FTDI_ELSTER_UNICOM_PID) },
632 { USB_DEVICE(FTDI_VID, FTDI_PROPOX_JTAGCABLEII_PID) },
633 { USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID),
634 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
635 { USB_DEVICE(FIC_VID, FIC_NEO1973_DEBUG_PID),
636 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
637 { USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID),
638 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
639 { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
640 { USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) },
641 { }, /* Optional parameter entry */
642 { } /* Terminating entry */
643 };
644
645 MODULE_DEVICE_TABLE (usb, id_table_combined);
646
647 static struct usb_driver ftdi_driver = {
648 .name = "ftdi_sio",
649 .probe = usb_serial_probe,
650 .disconnect = usb_serial_disconnect,
651 .id_table = id_table_combined,
652 .no_dynamic_id = 1,
653 };
654
655 static const char *ftdi_chip_name[] = {
656 [SIO] = "SIO", /* the serial part of FT8U100AX */
657 [FT8U232AM] = "FT8U232AM",
658 [FT232BM] = "FT232BM",
659 [FT2232C] = "FT2232C",
660 [FT232RL] = "FT232RL",
661 };
662
663
664 /* Constants for read urb and write urb */
665 #define BUFSZ 512
666 #define PKTSZ 64
667
668 /* rx_flags */
669 #define THROTTLED 0x01
670 #define ACTUALLY_THROTTLED 0x02
671
672 /* Used for TIOCMIWAIT */
673 #define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD)
674 #define FTDI_STATUS_B1_MASK (FTDI_RS_BI)
675 /* End TIOCMIWAIT */
676
677 #define FTDI_IMPL_ASYNC_FLAGS = (ASYNC_SPD_HI | ASYNC_SPD_VHI \
678 | ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP)
679
680 /* function prototypes for a FTDI serial converter */
681 static int ftdi_sio_probe (struct usb_serial *serial, const struct usb_device_id *id);
682 static void ftdi_shutdown (struct usb_serial *serial);
683 static int ftdi_sio_port_probe (struct usb_serial_port *port);
684 static int ftdi_sio_port_remove (struct usb_serial_port *port);
685 static int ftdi_open (struct tty_struct *tty, struct usb_serial_port *port, struct file *filp);
686 static void ftdi_close (struct tty_struct *tty, struct usb_serial_port *port, struct file *filp);
687 static int ftdi_write (struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count);
688 static int ftdi_write_room (struct tty_struct *tty);
689 static int ftdi_chars_in_buffer (struct tty_struct *tty);
690 static void ftdi_write_bulk_callback (struct urb *urb);
691 static void ftdi_read_bulk_callback (struct urb *urb);
692 static void ftdi_process_read (struct work_struct *work);
693 static void ftdi_set_termios (struct tty_struct *tty, struct usb_serial_port *port, struct ktermios * old);
694 static int ftdi_tiocmget (struct tty_struct *tty, struct file *file);
695 static int ftdi_tiocmset (struct tty_struct *tty, struct file * file, unsigned int set, unsigned int clear);
696 static int ftdi_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg);
697 static void ftdi_break_ctl (struct tty_struct *tty, int break_state );
698 static void ftdi_throttle (struct tty_struct *tty);
699 static void ftdi_unthrottle (struct tty_struct *tty);
700
701 static unsigned short int ftdi_232am_baud_base_to_divisor (int baud, int base);
702 static unsigned short int ftdi_232am_baud_to_divisor (int baud);
703 static __u32 ftdi_232bm_baud_base_to_divisor (int baud, int base);
704 static __u32 ftdi_232bm_baud_to_divisor (int baud);
705
706 static struct usb_serial_driver ftdi_sio_device = {
707 .driver = {
708 .owner = THIS_MODULE,
709 .name = "ftdi_sio",
710 },
711 .description = "FTDI USB Serial Device",
712 .usb_driver = &ftdi_driver ,
713 .id_table = id_table_combined,
714 .num_ports = 1,
715 .probe = ftdi_sio_probe,
716 .port_probe = ftdi_sio_port_probe,
717 .port_remove = ftdi_sio_port_remove,
718 .open = ftdi_open,
719 .close = ftdi_close,
720 .throttle = ftdi_throttle,
721 .unthrottle = ftdi_unthrottle,
722 .write = ftdi_write,
723 .write_room = ftdi_write_room,
724 .chars_in_buffer = ftdi_chars_in_buffer,
725 .read_bulk_callback = ftdi_read_bulk_callback,
726 .write_bulk_callback = ftdi_write_bulk_callback,
727 .tiocmget = ftdi_tiocmget,
728 .tiocmset = ftdi_tiocmset,
729 .ioctl = ftdi_ioctl,
730 .set_termios = ftdi_set_termios,
731 .break_ctl = ftdi_break_ctl,
732 .shutdown = ftdi_shutdown,
733 };
734
735
736 #define WDR_TIMEOUT 5000 /* default urb timeout */
737 #define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */
738
739 /* High and low are for DTR, RTS etc etc */
740 #define HIGH 1
741 #define LOW 0
742
743 /* number of outstanding urbs to prevent userspace DoS from happening */
744 #define URB_UPPER_LIMIT 42
745
746 /*
747 * ***************************************************************************
748 * Utility functions
749 * ***************************************************************************
750 */
751
752 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base)
753 {
754 unsigned short int divisor;
755 int divisor3 = base / 2 / baud; // divisor shifted 3 bits to the left
756 if ((divisor3 & 0x7) == 7) divisor3 ++; // round x.7/8 up to x+1
757 divisor = divisor3 >> 3;
758 divisor3 &= 0x7;
759 if (divisor3 == 1) divisor |= 0xc000; else // 0.125
760 if (divisor3 >= 4) divisor |= 0x4000; else // 0.5
761 if (divisor3 != 0) divisor |= 0x8000; // 0.25
762 if (divisor == 1) divisor = 0; /* special case for maximum baud rate */
763 return divisor;
764 }
765
766 static unsigned short int ftdi_232am_baud_to_divisor(int baud)
767 {
768 return(ftdi_232am_baud_base_to_divisor(baud, 48000000));
769 }
770
771 static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base)
772 {
773 static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
774 __u32 divisor;
775 int divisor3 = base / 2 / baud; // divisor shifted 3 bits to the left
776 divisor = divisor3 >> 3;
777 divisor |= (__u32)divfrac[divisor3 & 0x7] << 14;
778 /* Deal with special cases for highest baud rates. */
779 if (divisor == 1) divisor = 0; else // 1.0
780 if (divisor == 0x4001) divisor = 1; // 1.5
781 return divisor;
782 }
783
784 static __u32 ftdi_232bm_baud_to_divisor(int baud)
785 {
786 return(ftdi_232bm_baud_base_to_divisor(baud, 48000000));
787 }
788
789 #define set_mctrl(port, set) update_mctrl((port), (set), 0)
790 #define clear_mctrl(port, clear) update_mctrl((port), 0, (clear))
791
792 static int update_mctrl(struct usb_serial_port *port, unsigned int set, unsigned int clear)
793 {
794 struct ftdi_private *priv = usb_get_serial_port_data(port);
795 char *buf;
796 unsigned urb_value;
797 int rv;
798
799 if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
800 dbg("%s - DTR|RTS not being set|cleared", __func__);
801 return 0; /* no change */
802 }
803
804 buf = kmalloc(1, GFP_NOIO);
805 if (!buf)
806 return -ENOMEM;
807
808 clear &= ~set; /* 'set' takes precedence over 'clear' */
809 urb_value = 0;
810 if (clear & TIOCM_DTR)
811 urb_value |= FTDI_SIO_SET_DTR_LOW;
812 if (clear & TIOCM_RTS)
813 urb_value |= FTDI_SIO_SET_RTS_LOW;
814 if (set & TIOCM_DTR)
815 urb_value |= FTDI_SIO_SET_DTR_HIGH;
816 if (set & TIOCM_RTS)
817 urb_value |= FTDI_SIO_SET_RTS_HIGH;
818 rv = usb_control_msg(port->serial->dev,
819 usb_sndctrlpipe(port->serial->dev, 0),
820 FTDI_SIO_SET_MODEM_CTRL_REQUEST,
821 FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
822 urb_value, priv->interface,
823 buf, 0, WDR_TIMEOUT);
824
825 kfree(buf);
826 if (rv < 0) {
827 err("%s Error from MODEM_CTRL urb: DTR %s, RTS %s",
828 __func__,
829 (set & TIOCM_DTR) ? "HIGH" :
830 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
831 (set & TIOCM_RTS) ? "HIGH" :
832 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
833 } else {
834 dbg("%s - DTR %s, RTS %s", __func__,
835 (set & TIOCM_DTR) ? "HIGH" :
836 (clear & TIOCM_DTR) ? "LOW" : "unchanged",
837 (set & TIOCM_RTS) ? "HIGH" :
838 (clear & TIOCM_RTS) ? "LOW" : "unchanged");
839 /* FIXME: locking on last_dtr_rts */
840 priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set;
841 }
842 return rv;
843 }
844
845
846 static __u32 get_ftdi_divisor(struct tty_struct *tty, struct usb_serial_port *port)
847 { /* get_ftdi_divisor */
848 struct ftdi_private *priv = usb_get_serial_port_data(port);
849 __u32 div_value = 0;
850 int div_okay = 1;
851 int baud;
852
853 /*
854 * The logic involved in setting the baudrate can be cleanly split in 3 steps.
855 * Obtaining the actual baud rate is a little tricky since unix traditionally
856 * somehow ignored the possibility to set non-standard baud rates.
857 * 1. Standard baud rates are set in tty->termios->c_cflag
858 * 2. If these are not enough, you can set any speed using alt_speed as follows:
859 * - set tty->termios->c_cflag speed to B38400
860 * - set your real speed in tty->alt_speed; it gets ignored when
861 * alt_speed==0, (or)
862 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as follows:
863 * flags & ASYNC_SPD_MASK == ASYNC_SPD_[HI, VHI, SHI, WARP], this just
864 * sets alt_speed to (HI: 57600, VHI: 115200, SHI: 230400, WARP: 460800)
865 * ** Steps 1, 2 are done courtesy of tty_get_baud_rate
866 * 3. You can also set baud rate by setting custom divisor as follows
867 * - set tty->termios->c_cflag speed to B38400
868 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as follows:
869 * o flags & ASYNC_SPD_MASK == ASYNC_SPD_CUST
870 * o custom_divisor set to baud_base / your_new_baudrate
871 * ** Step 3 is done courtesy of code borrowed from serial.c - I should really
872 * spend some time and separate+move this common code to serial.c, it is
873 * replicated in nearly every serial driver you see.
874 */
875
876 /* 1. Get the baud rate from the tty settings, this observes alt_speed hack */
877
878 baud = tty_get_baud_rate(tty);
879 dbg("%s - tty_get_baud_rate reports speed %d", __func__, baud);
880
881 /* 2. Observe async-compatible custom_divisor hack, update baudrate if needed */
882
883 if (baud == 38400 &&
884 ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
885 (priv->custom_divisor)) {
886 baud = priv->baud_base / priv->custom_divisor;
887 dbg("%s - custom divisor %d sets baud rate to %d", __func__, priv->custom_divisor, baud);
888 }
889
890 /* 3. Convert baudrate to device-specific divisor */
891
892 if (!baud) baud = 9600;
893 switch(priv->chip_type) {
894 case SIO: /* SIO chip */
895 switch(baud) {
896 case 300: div_value = ftdi_sio_b300; break;
897 case 600: div_value = ftdi_sio_b600; break;
898 case 1200: div_value = ftdi_sio_b1200; break;
899 case 2400: div_value = ftdi_sio_b2400; break;
900 case 4800: div_value = ftdi_sio_b4800; break;
901 case 9600: div_value = ftdi_sio_b9600; break;
902 case 19200: div_value = ftdi_sio_b19200; break;
903 case 38400: div_value = ftdi_sio_b38400; break;
904 case 57600: div_value = ftdi_sio_b57600; break;
905 case 115200: div_value = ftdi_sio_b115200; break;
906 } /* baud */
907 if (div_value == 0) {
908 dbg("%s - Baudrate (%d) requested is not supported", __func__, baud);
909 div_value = ftdi_sio_b9600;
910 baud = 9600;
911 div_okay = 0;
912 }
913 break;
914 case FT8U232AM: /* 8U232AM chip */
915 if (baud <= 3000000) {
916 div_value = ftdi_232am_baud_to_divisor(baud);
917 } else {
918 dbg("%s - Baud rate too high!", __func__);
919 baud = 9600;
920 div_value = ftdi_232am_baud_to_divisor(9600);
921 div_okay = 0;
922 }
923 break;
924 case FT232BM: /* FT232BM chip */
925 case FT2232C: /* FT2232C chip */
926 case FT232RL:
927 if (baud <= 3000000) {
928 div_value = ftdi_232bm_baud_to_divisor(baud);
929 } else {
930 dbg("%s - Baud rate too high!", __func__);
931 div_value = ftdi_232bm_baud_to_divisor(9600);
932 div_okay = 0;
933 baud = 9600;
934 }
935 break;
936 } /* priv->chip_type */
937
938 if (div_okay) {
939 dbg("%s - Baud rate set to %d (divisor 0x%lX) on chip %s",
940 __func__, baud, (unsigned long)div_value,
941 ftdi_chip_name[priv->chip_type]);
942 }
943
944 tty_encode_baud_rate(tty, baud, baud);
945 return(div_value);
946 }
947
948 static int change_speed(struct tty_struct *tty, struct usb_serial_port *port)
949 {
950 struct ftdi_private *priv = usb_get_serial_port_data(port);
951 char *buf;
952 __u16 urb_value;
953 __u16 urb_index;
954 __u32 urb_index_value;
955 int rv;
956
957 buf = kmalloc(1, GFP_NOIO);
958 if (!buf)
959 return -ENOMEM;
960
961 urb_index_value = get_ftdi_divisor(tty, port);
962 urb_value = (__u16)urb_index_value;
963 urb_index = (__u16)(urb_index_value >> 16);
964 if (priv->interface) { /* FT2232C */
965 urb_index = (__u16)((urb_index << 8) | priv->interface);
966 }
967
968 rv = usb_control_msg(port->serial->dev,
969 usb_sndctrlpipe(port->serial->dev, 0),
970 FTDI_SIO_SET_BAUDRATE_REQUEST,
971 FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
972 urb_value, urb_index,
973 buf, 0, WDR_SHORT_TIMEOUT);
974
975 kfree(buf);
976 return rv;
977 }
978
979
980
981 static int get_serial_info(struct usb_serial_port * port, struct serial_struct __user * retinfo)
982 {
983 struct ftdi_private *priv = usb_get_serial_port_data(port);
984 struct serial_struct tmp;
985
986 if (!retinfo)
987 return -EFAULT;
988 memset(&tmp, 0, sizeof(tmp));
989 tmp.flags = priv->flags;
990 tmp.baud_base = priv->baud_base;
991 tmp.custom_divisor = priv->custom_divisor;
992 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
993 return -EFAULT;
994 return 0;
995 } /* get_serial_info */
996
997
998 static int set_serial_info(struct tty_struct *tty,
999 struct usb_serial_port * port, struct serial_struct __user * newinfo)
1000 { /* set_serial_info */
1001 struct ftdi_private *priv = usb_get_serial_port_data(port);
1002 struct serial_struct new_serial;
1003 struct ftdi_private old_priv;
1004
1005 if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
1006 return -EFAULT;
1007 old_priv = * priv;
1008
1009 /* Do error checking and permission checking */
1010
1011 if (!capable(CAP_SYS_ADMIN)) {
1012 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
1013 (priv->flags & ~ASYNC_USR_MASK)))
1014 return -EPERM;
1015 priv->flags = ((priv->flags & ~ASYNC_USR_MASK) |
1016 (new_serial.flags & ASYNC_USR_MASK));
1017 priv->custom_divisor = new_serial.custom_divisor;
1018 goto check_and_exit;
1019 }
1020
1021 if ((new_serial.baud_base != priv->baud_base) &&
1022 (new_serial.baud_base < 9600))
1023 return -EINVAL;
1024
1025 /* Make the changes - these are privileged changes! */
1026
1027 priv->flags = ((priv->flags & ~ASYNC_FLAGS) |
1028 (new_serial.flags & ASYNC_FLAGS));
1029 priv->custom_divisor = new_serial.custom_divisor;
1030
1031 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1032
1033 check_and_exit:
1034 if ((old_priv.flags & ASYNC_SPD_MASK) !=
1035 (priv->flags & ASYNC_SPD_MASK)) {
1036 if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
1037 tty->alt_speed = 57600;
1038 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
1039 tty->alt_speed = 115200;
1040 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
1041 tty->alt_speed = 230400;
1042 else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
1043 tty->alt_speed = 460800;
1044 else
1045 tty->alt_speed = 0;
1046 }
1047 if (((old_priv.flags & ASYNC_SPD_MASK) !=
1048 (priv->flags & ASYNC_SPD_MASK)) ||
1049 (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
1050 (old_priv.custom_divisor != priv->custom_divisor))) {
1051 change_speed(tty, port);
1052 }
1053 return 0;
1054
1055 } /* set_serial_info */
1056
1057
1058 /* Determine type of FTDI chip based on USB config and descriptor. */
1059 static void ftdi_determine_type(struct usb_serial_port *port)
1060 {
1061 struct ftdi_private *priv = usb_get_serial_port_data(port);
1062 struct usb_serial *serial = port->serial;
1063 struct usb_device *udev = serial->dev;
1064 unsigned version;
1065 unsigned interfaces;
1066
1067 /* Assume it is not the original SIO device for now. */
1068 priv->baud_base = 48000000 / 2;
1069 priv->write_offset = 0;
1070
1071 version = le16_to_cpu(udev->descriptor.bcdDevice);
1072 interfaces = udev->actconfig->desc.bNumInterfaces;
1073 dbg("%s: bcdDevice = 0x%x, bNumInterfaces = %u", __func__,
1074 version, interfaces);
1075 if (interfaces > 1) {
1076 int inter;
1077
1078 /* Multiple interfaces. Assume FT2232C. */
1079 priv->chip_type = FT2232C;
1080 /* Determine interface code. */
1081 inter = serial->interface->altsetting->desc.bInterfaceNumber;
1082 if (inter == 0) {
1083 priv->interface = PIT_SIOA;
1084 } else {
1085 priv->interface = PIT_SIOB;
1086 }
1087 /* BM-type devices have a bug where bcdDevice gets set
1088 * to 0x200 when iSerialNumber is 0. */
1089 if (version < 0x500) {
1090 dbg("%s: something fishy - bcdDevice too low for multi-interface device",
1091 __func__);
1092 }
1093 } else if (version < 0x200) {
1094 /* Old device. Assume its the original SIO. */
1095 priv->chip_type = SIO;
1096 priv->baud_base = 12000000 / 16;
1097 priv->write_offset = 1;
1098 } else if (version < 0x400) {
1099 /* Assume its an FT8U232AM (or FT8U245AM) */
1100 /* (It might be a BM because of the iSerialNumber bug,
1101 * but it will still work as an AM device.) */
1102 priv->chip_type = FT8U232AM;
1103 } else if (version < 0x600) {
1104 /* Assume its an FT232BM (or FT245BM) */
1105 priv->chip_type = FT232BM;
1106 } else {
1107 /* Assume its an FT232R */
1108 priv->chip_type = FT232RL;
1109 }
1110 info("Detected %s", ftdi_chip_name[priv->chip_type]);
1111 }
1112
1113
1114 /*
1115 * ***************************************************************************
1116 * Sysfs Attribute
1117 * ***************************************************************************
1118 */
1119
1120 static ssize_t show_latency_timer(struct device *dev, struct device_attribute *attr, char *buf)
1121 {
1122 struct usb_serial_port *port = to_usb_serial_port(dev);
1123 struct ftdi_private *priv = usb_get_serial_port_data(port);
1124 struct usb_device *udev = port->serial->dev;
1125 unsigned short latency = 0;
1126 int rv = 0;
1127
1128
1129 dbg("%s",__func__);
1130
1131 rv = usb_control_msg(udev,
1132 usb_rcvctrlpipe(udev, 0),
1133 FTDI_SIO_GET_LATENCY_TIMER_REQUEST,
1134 FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE,
1135 0, priv->interface,
1136 (char*) &latency, 1, WDR_TIMEOUT);
1137
1138 if (rv < 0) {
1139 dev_err(dev, "Unable to read latency timer: %i\n", rv);
1140 return -EIO;
1141 }
1142 return sprintf(buf, "%i\n", latency);
1143 }
1144
1145 /* Write a new value of the latency timer, in units of milliseconds. */
1146 static ssize_t store_latency_timer(struct device *dev, struct device_attribute *attr, const char *valbuf,
1147 size_t count)
1148 {
1149 struct usb_serial_port *port = to_usb_serial_port(dev);
1150 struct ftdi_private *priv = usb_get_serial_port_data(port);
1151 struct usb_device *udev = port->serial->dev;
1152 char buf[1];
1153 int v = simple_strtoul(valbuf, NULL, 10);
1154 int rv = 0;
1155
1156 dbg("%s: setting latency timer = %i", __func__, v);
1157
1158 rv = usb_control_msg(udev,
1159 usb_sndctrlpipe(udev, 0),
1160 FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
1161 FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
1162 v, priv->interface,
1163 buf, 0, WDR_TIMEOUT);
1164
1165 if (rv < 0) {
1166 dev_err(dev, "Unable to write latency timer: %i\n", rv);
1167 return -EIO;
1168 }
1169
1170 return count;
1171 }
1172
1173 /* Write an event character directly to the FTDI register. The ASCII
1174 value is in the low 8 bits, with the enable bit in the 9th bit. */
1175 static ssize_t store_event_char(struct device *dev, struct device_attribute *attr, const char *valbuf,
1176 size_t count)
1177 {
1178 struct usb_serial_port *port = to_usb_serial_port(dev);
1179 struct ftdi_private *priv = usb_get_serial_port_data(port);
1180 struct usb_device *udev = port->serial->dev;
1181 char buf[1];
1182 int v = simple_strtoul(valbuf, NULL, 10);
1183 int rv = 0;
1184
1185 dbg("%s: setting event char = %i", __func__, v);
1186
1187 rv = usb_control_msg(udev,
1188 usb_sndctrlpipe(udev, 0),
1189 FTDI_SIO_SET_EVENT_CHAR_REQUEST,
1190 FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE,
1191 v, priv->interface,
1192 buf, 0, WDR_TIMEOUT);
1193
1194 if (rv < 0) {
1195 dbg("Unable to write event character: %i", rv);
1196 return -EIO;
1197 }
1198
1199 return count;
1200 }
1201
1202 static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer, store_latency_timer);
1203 static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char);
1204
1205 static int create_sysfs_attrs(struct usb_serial_port *port)
1206 {
1207 struct ftdi_private *priv = usb_get_serial_port_data(port);
1208 int retval = 0;
1209
1210 dbg("%s",__func__);
1211
1212 /* XXX I've no idea if the original SIO supports the event_char
1213 * sysfs parameter, so I'm playing it safe. */
1214 if (priv->chip_type != SIO) {
1215 dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]);
1216 retval = device_create_file(&port->dev, &dev_attr_event_char);
1217 if ((!retval) &&
1218 (priv->chip_type == FT232BM ||
1219 priv->chip_type == FT2232C ||
1220 priv->chip_type == FT232RL)) {
1221 retval = device_create_file(&port->dev,
1222 &dev_attr_latency_timer);
1223 }
1224 }
1225 return retval;
1226 }
1227
1228 static void remove_sysfs_attrs(struct usb_serial_port *port)
1229 {
1230 struct ftdi_private *priv = usb_get_serial_port_data(port);
1231
1232 dbg("%s",__func__);
1233
1234 /* XXX see create_sysfs_attrs */
1235 if (priv->chip_type != SIO) {
1236 device_remove_file(&port->dev, &dev_attr_event_char);
1237 if (priv->chip_type == FT232BM ||
1238 priv->chip_type == FT2232C ||
1239 priv->chip_type == FT232RL) {
1240 device_remove_file(&port->dev, &dev_attr_latency_timer);
1241 }
1242 }
1243
1244 }
1245
1246 /*
1247 * ***************************************************************************
1248 * FTDI driver specific functions
1249 * ***************************************************************************
1250 */
1251
1252 /* Probe function to check for special devices */
1253 static int ftdi_sio_probe (struct usb_serial *serial, const struct usb_device_id *id)
1254 {
1255 struct ftdi_sio_quirk *quirk = (struct ftdi_sio_quirk *)id->driver_info;
1256
1257 if (quirk && quirk->probe) {
1258 int ret = quirk->probe(serial);
1259 if (ret != 0)
1260 return ret;
1261 }
1262
1263 usb_set_serial_data(serial, (void *)id->driver_info);
1264
1265 return 0;
1266 }
1267
1268 static int ftdi_sio_port_probe(struct usb_serial_port *port)
1269 {
1270 struct ftdi_private *priv;
1271 struct ftdi_sio_quirk *quirk = usb_get_serial_data(port->serial);
1272
1273
1274 dbg("%s",__func__);
1275
1276 priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL);
1277 if (!priv){
1278 err("%s- kmalloc(%Zd) failed.", __func__, sizeof(struct ftdi_private));
1279 return -ENOMEM;
1280 }
1281
1282 spin_lock_init(&priv->rx_lock);
1283 spin_lock_init(&priv->tx_lock);
1284 init_waitqueue_head(&priv->delta_msr_wait);
1285 /* This will push the characters through immediately rather
1286 than queue a task to deliver them */
1287 priv->flags = ASYNC_LOW_LATENCY;
1288
1289 if (quirk && quirk->port_probe)
1290 quirk->port_probe(priv);
1291
1292 /* Increase the size of read buffers */
1293 kfree(port->bulk_in_buffer);
1294 port->bulk_in_buffer = kmalloc (BUFSZ, GFP_KERNEL);
1295 if (!port->bulk_in_buffer) {
1296 kfree (priv);
1297 return -ENOMEM;
1298 }
1299 if (port->read_urb) {
1300 port->read_urb->transfer_buffer = port->bulk_in_buffer;
1301 port->read_urb->transfer_buffer_length = BUFSZ;
1302 }
1303
1304 INIT_DELAYED_WORK(&priv->rx_work, ftdi_process_read);
1305 priv->port = port;
1306
1307 /* Free port's existing write urb and transfer buffer. */
1308 if (port->write_urb) {
1309 usb_free_urb (port->write_urb);
1310 port->write_urb = NULL;
1311 }
1312 kfree(port->bulk_out_buffer);
1313 port->bulk_out_buffer = NULL;
1314
1315 usb_set_serial_port_data(port, priv);
1316
1317 ftdi_determine_type (port);
1318 create_sysfs_attrs(port);
1319 return 0;
1320 }
1321
1322 /* Setup for the USB-UIRT device, which requires hardwired
1323 * baudrate (38400 gets mapped to 312500) */
1324 /* Called from usbserial:serial_probe */
1325 static void ftdi_USB_UIRT_setup (struct ftdi_private *priv)
1326 {
1327 dbg("%s",__func__);
1328
1329 priv->flags |= ASYNC_SPD_CUST;
1330 priv->custom_divisor = 77;
1331 priv->force_baud = 38400;
1332 } /* ftdi_USB_UIRT_setup */
1333
1334 /* Setup for the HE-TIRA1 device, which requires hardwired
1335 * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */
1336 static void ftdi_HE_TIRA1_setup (struct ftdi_private *priv)
1337 {
1338 dbg("%s",__func__);
1339
1340 priv->flags |= ASYNC_SPD_CUST;
1341 priv->custom_divisor = 240;
1342 priv->force_baud = 38400;
1343 priv->force_rtscts = 1;
1344 } /* ftdi_HE_TIRA1_setup */
1345
1346 /*
1347 * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko
1348 * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from
1349 * userspace using openocd.
1350 */
1351 static int ftdi_jtag_probe(struct usb_serial *serial)
1352 {
1353 struct usb_device *udev = serial->dev;
1354 struct usb_interface *interface = serial->interface;
1355
1356 dbg("%s",__func__);
1357
1358 if (interface == udev->actconfig->interface[0]) {
1359 info("Ignoring serial port reserved for JTAG");
1360 return -ENODEV;
1361 }
1362
1363 return 0;
1364 }
1365
1366 /*
1367 * The Matrix Orbital VK204-25-USB has an invalid IN endpoint.
1368 * We have to correct it if we want to read from it.
1369 */
1370 static int ftdi_mtxorb_hack_setup(struct usb_serial *serial)
1371 {
1372 struct usb_host_endpoint *ep = serial->dev->ep_in[1];
1373 struct usb_endpoint_descriptor *ep_desc = &ep->desc;
1374
1375 if (ep->enabled && ep_desc->wMaxPacketSize == 0) {
1376 ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
1377 info("Fixing invalid wMaxPacketSize on read pipe");
1378 }
1379
1380 return 0;
1381 }
1382
1383 /* ftdi_shutdown is called from usbserial:usb_serial_disconnect
1384 * it is called when the usb device is disconnected
1385 *
1386 * usbserial:usb_serial_disconnect
1387 * calls __serial_close for each open of the port
1388 * shutdown is called then (ie ftdi_shutdown)
1389 */
1390 static void ftdi_shutdown (struct usb_serial *serial)
1391 {
1392 dbg("%s", __func__);
1393 }
1394
1395 static int ftdi_sio_port_remove(struct usb_serial_port *port)
1396 {
1397 struct ftdi_private *priv = usb_get_serial_port_data(port);
1398
1399 dbg("%s", __func__);
1400
1401 remove_sysfs_attrs(port);
1402
1403 /* all open ports are closed at this point
1404 * (by usbserial.c:__serial_close, which calls ftdi_close)
1405 */
1406
1407 if (priv) {
1408 usb_set_serial_port_data(port, NULL);
1409 kfree(priv);
1410 }
1411
1412 return 0;
1413 }
1414
1415 static int ftdi_open(struct tty_struct *tty,
1416 struct usb_serial_port *port, struct file *filp)
1417 { /* ftdi_open */
1418 struct usb_device *dev = port->serial->dev;
1419 struct ftdi_private *priv = usb_get_serial_port_data(port);
1420 unsigned long flags;
1421
1422 int result = 0;
1423 char buf[1]; /* Needed for the usb_control_msg I think */
1424
1425 dbg("%s", __func__);
1426
1427 spin_lock_irqsave(&priv->tx_lock, flags);
1428 priv->tx_bytes = 0;
1429 spin_unlock_irqrestore(&priv->tx_lock, flags);
1430 spin_lock_irqsave(&priv->rx_lock, flags);
1431 priv->rx_bytes = 0;
1432 spin_unlock_irqrestore(&priv->rx_lock, flags);
1433
1434 if (tty)
1435 tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1436
1437 /* No error checking for this (will get errors later anyway) */
1438 /* See ftdi_sio.h for description of what is reset */
1439 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1440 FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
1441 FTDI_SIO_RESET_SIO,
1442 priv->interface, buf, 0, WDR_TIMEOUT);
1443
1444 /* Termios defaults are set by usb_serial_init. We don't change
1445 port->tty->termios - this would loose speed settings, etc.
1446 This is same behaviour as serial.c/rs_open() - Kuba */
1447
1448 /* ftdi_set_termios will send usb control messages */
1449 if (tty)
1450 ftdi_set_termios(tty, port, tty->termios);
1451
1452 /* FIXME: Flow control might be enabled, so it should be checked -
1453 we have no control of defaults! */
1454 /* Turn on RTS and DTR since we are not flow controlling by default */
1455 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1456
1457 /* Not throttled */
1458 spin_lock_irqsave(&priv->rx_lock, flags);
1459 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
1460 spin_unlock_irqrestore(&priv->rx_lock, flags);
1461
1462 /* Start reading from the device */
1463 priv->rx_processed = 0;
1464 usb_fill_bulk_urb(port->read_urb, dev,
1465 usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress),
1466 port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length,
1467 ftdi_read_bulk_callback, port);
1468 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
1469 if (result)
1470 err("%s - failed submitting read urb, error %d", __func__, result);
1471
1472
1473 return result;
1474 } /* ftdi_open */
1475
1476
1477
1478 /*
1479 * usbserial:__serial_close only calls ftdi_close if the point is open
1480 *
1481 * This only gets called when it is the last close
1482 *
1483 *
1484 */
1485
1486 static void ftdi_close(struct tty_struct *tty,
1487 struct usb_serial_port *port, struct file *filp)
1488 { /* ftdi_close */
1489 unsigned int c_cflag = tty->termios->c_cflag;
1490 struct ftdi_private *priv = usb_get_serial_port_data(port);
1491 char buf[1];
1492
1493 dbg("%s", __func__);
1494
1495 mutex_lock(&port->serial->disc_mutex);
1496 if (c_cflag & HUPCL && !port->serial->disconnected){
1497 /* Disable flow control */
1498 if (usb_control_msg(port->serial->dev,
1499 usb_sndctrlpipe(port->serial->dev, 0),
1500 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
1501 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
1502 0, priv->interface, buf, 0,
1503 WDR_TIMEOUT) < 0) {
1504 err("error from flowcontrol urb");
1505 }
1506
1507 /* drop RTS and DTR */
1508 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
1509 } /* Note change no line if hupcl is off */
1510 mutex_unlock(&port->serial->disc_mutex);
1511
1512 /* cancel any scheduled reading */
1513 cancel_delayed_work(&priv->rx_work);
1514 flush_scheduled_work();
1515
1516 /* shutdown our bulk read */
1517 usb_kill_urb(port->read_urb);
1518 } /* ftdi_close */
1519
1520
1521
1522 /* The SIO requires the first byte to have:
1523 * B0 1
1524 * B1 0
1525 * B2..7 length of message excluding byte 0
1526 *
1527 * The new devices do not require this byte
1528 */
1529 static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port,
1530 const unsigned char *buf, int count)
1531 { /* ftdi_write */
1532 struct ftdi_private *priv = usb_get_serial_port_data(port);
1533 struct urb *urb;
1534 unsigned char *buffer;
1535 int data_offset ; /* will be 1 for the SIO and 0 otherwise */
1536 int status;
1537 int transfer_size;
1538 unsigned long flags;
1539
1540 dbg("%s port %d, %d bytes", __func__, port->number, count);
1541
1542 if (count == 0) {
1543 dbg("write request of 0 bytes");
1544 return 0;
1545 }
1546 spin_lock_irqsave(&priv->tx_lock, flags);
1547 if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) {
1548 spin_unlock_irqrestore(&priv->tx_lock, flags);
1549 dbg("%s - write limit hit\n", __func__);
1550 return 0;
1551 }
1552 priv->tx_outstanding_urbs++;
1553 spin_unlock_irqrestore(&priv->tx_lock, flags);
1554
1555 data_offset = priv->write_offset;
1556 dbg("data_offset set to %d",data_offset);
1557
1558 /* Determine total transfer size */
1559 transfer_size = count;
1560 if (data_offset > 0) {
1561 /* Original sio needs control bytes too... */
1562 transfer_size += (data_offset *
1563 ((count + (PKTSZ - 1 - data_offset)) /
1564 (PKTSZ - data_offset)));
1565 }
1566
1567 buffer = kmalloc (transfer_size, GFP_ATOMIC);
1568 if (!buffer) {
1569 err("%s ran out of kernel memory for urb ...", __func__);
1570 count = -ENOMEM;
1571 goto error_no_buffer;
1572 }
1573
1574 urb = usb_alloc_urb(0, GFP_ATOMIC);
1575 if (!urb) {
1576 err("%s - no more free urbs", __func__);
1577 count = -ENOMEM;
1578 goto error_no_urb;
1579 }
1580
1581 /* Copy data */
1582 if (data_offset > 0) {
1583 /* Original sio requires control byte at start of each packet. */
1584 int user_pktsz = PKTSZ - data_offset;
1585 int todo = count;
1586 unsigned char *first_byte = buffer;
1587 const unsigned char *current_position = buf;
1588
1589 while (todo > 0) {
1590 if (user_pktsz > todo) {
1591 user_pktsz = todo;
1592 }
1593 /* Write the control byte at the front of the packet*/
1594 *first_byte = 1 | ((user_pktsz) << 2);
1595 /* Copy data for packet */
1596 memcpy (first_byte + data_offset,
1597 current_position, user_pktsz);
1598 first_byte += user_pktsz + data_offset;
1599 current_position += user_pktsz;
1600 todo -= user_pktsz;
1601 }
1602 } else {
1603 /* No control byte required. */
1604 /* Copy in the data to send */
1605 memcpy (buffer, buf, count);
1606 }
1607
1608 usb_serial_debug_data(debug, &port->dev, __func__, transfer_size, buffer);
1609
1610 /* fill the buffer and send it */
1611 usb_fill_bulk_urb(urb, port->serial->dev,
1612 usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress),
1613 buffer, transfer_size,
1614 ftdi_write_bulk_callback, port);
1615
1616 status = usb_submit_urb(urb, GFP_ATOMIC);
1617 if (status) {
1618 err("%s - failed submitting write urb, error %d", __func__, status);
1619 count = status;
1620 goto error;
1621 } else {
1622 spin_lock_irqsave(&priv->tx_lock, flags);
1623 priv->tx_outstanding_bytes += count;
1624 priv->tx_bytes += count;
1625 spin_unlock_irqrestore(&priv->tx_lock, flags);
1626 }
1627
1628 /* we are done with this urb, so let the host driver
1629 * really free it when it is finished with it */
1630 usb_free_urb(urb);
1631
1632 dbg("%s write returning: %d", __func__, count);
1633 return count;
1634 error:
1635 usb_free_urb(urb);
1636 error_no_urb:
1637 kfree (buffer);
1638 error_no_buffer:
1639 spin_lock_irqsave(&priv->tx_lock, flags);
1640 priv->tx_outstanding_urbs--;
1641 spin_unlock_irqrestore(&priv->tx_lock, flags);
1642 return count;
1643 } /* ftdi_write */
1644
1645
1646 /* This function may get called when the device is closed */
1647
1648 static void ftdi_write_bulk_callback (struct urb *urb)
1649 {
1650 unsigned long flags;
1651 struct usb_serial_port *port = urb->context;
1652 struct ftdi_private *priv;
1653 int data_offset; /* will be 1 for the SIO and 0 otherwise */
1654 unsigned long countback;
1655 int status = urb->status;
1656
1657 /* free up the transfer buffer, as usb_free_urb() does not do this */
1658 kfree (urb->transfer_buffer);
1659
1660 dbg("%s - port %d", __func__, port->number);
1661
1662 if (status) {
1663 dbg("nonzero write bulk status received: %d", status);
1664 return;
1665 }
1666
1667 priv = usb_get_serial_port_data(port);
1668 if (!priv) {
1669 dbg("%s - bad port private data pointer - exiting", __func__);
1670 return;
1671 }
1672 /* account for transferred data */
1673 countback = urb->actual_length;
1674 data_offset = priv->write_offset;
1675 if (data_offset > 0) {
1676 /* Subtract the control bytes */
1677 countback -= (data_offset * DIV_ROUND_UP(countback, PKTSZ));
1678 }
1679 spin_lock_irqsave(&priv->tx_lock, flags);
1680 --priv->tx_outstanding_urbs;
1681 priv->tx_outstanding_bytes -= countback;
1682 spin_unlock_irqrestore(&priv->tx_lock, flags);
1683
1684 usb_serial_port_softint(port);
1685 } /* ftdi_write_bulk_callback */
1686
1687
1688 static int ftdi_write_room(struct tty_struct *tty)
1689 {
1690 struct usb_serial_port *port = tty->driver_data;
1691 struct ftdi_private *priv = usb_get_serial_port_data(port);
1692 int room;
1693 unsigned long flags;
1694
1695 dbg("%s - port %d", __func__, port->number);
1696
1697 spin_lock_irqsave(&priv->tx_lock, flags);
1698 if (priv->tx_outstanding_urbs < URB_UPPER_LIMIT) {
1699 /*
1700 * We really can take anything the user throws at us
1701 * but let's pick a nice big number to tell the tty
1702 * layer that we have lots of free space
1703 */
1704 room = 2048;
1705 } else {
1706 room = 0;
1707 }
1708 spin_unlock_irqrestore(&priv->tx_lock, flags);
1709 return room;
1710 }
1711
1712 static int ftdi_chars_in_buffer(struct tty_struct *tty)
1713 {
1714 struct usb_serial_port *port = tty->driver_data;
1715 struct ftdi_private *priv = usb_get_serial_port_data(port);
1716 int buffered;
1717 unsigned long flags;
1718
1719 dbg("%s - port %d", __func__, port->number);
1720
1721 spin_lock_irqsave(&priv->tx_lock, flags);
1722 buffered = (int)priv->tx_outstanding_bytes;
1723 spin_unlock_irqrestore(&priv->tx_lock, flags);
1724 if (buffered < 0) {
1725 err("%s outstanding tx bytes is negative!", __func__);
1726 buffered = 0;
1727 }
1728 return buffered;
1729 }
1730
1731 static void ftdi_read_bulk_callback(struct urb *urb)
1732 {
1733 struct usb_serial_port *port = urb->context;
1734 struct tty_struct *tty;
1735 struct ftdi_private *priv;
1736 unsigned long countread;
1737 unsigned long flags;
1738 int status = urb->status;
1739
1740 if (urb->number_of_packets > 0) {
1741 err("%s transfer_buffer_length %d actual_length %d number of packets %d",__func__,
1742 urb->transfer_buffer_length, urb->actual_length, urb->number_of_packets );
1743 err("%s transfer_flags %x ", __func__,urb->transfer_flags );
1744 }
1745
1746 dbg("%s - port %d", __func__, port->number);
1747
1748 if (port->port.count <= 0)
1749 return;
1750
1751 tty = port->port.tty;
1752 if (!tty) {
1753 dbg("%s - bad tty pointer - exiting",__func__);
1754 return;
1755 }
1756
1757 priv = usb_get_serial_port_data(port);
1758 if (!priv) {
1759 dbg("%s - bad port private data pointer - exiting", __func__);
1760 return;
1761 }
1762
1763 if (urb != port->read_urb) {
1764 err("%s - Not my urb!", __func__);
1765 }
1766
1767 if (status) {
1768 /* This will happen at close every time so it is a dbg not an err */
1769 dbg("(this is ok on close) nonzero read bulk status received: "
1770 "%d", status);
1771 return;
1772 }
1773
1774 /* count data bytes, but not status bytes */
1775 countread = urb->actual_length;
1776 countread -= 2 * DIV_ROUND_UP(countread, PKTSZ);
1777 spin_lock_irqsave(&priv->rx_lock, flags);
1778 priv->rx_bytes += countread;
1779 spin_unlock_irqrestore(&priv->rx_lock, flags);
1780
1781 ftdi_process_read(&priv->rx_work.work);
1782
1783 } /* ftdi_read_bulk_callback */
1784
1785
1786 static void ftdi_process_read (struct work_struct *work)
1787 { /* ftdi_process_read */
1788 struct ftdi_private *priv =
1789 container_of(work, struct ftdi_private, rx_work.work);
1790 struct usb_serial_port *port = priv->port;
1791 struct urb *urb;
1792 struct tty_struct *tty;
1793 char error_flag;
1794 unsigned char *data;
1795
1796 int i;
1797 int result;
1798 int need_flip;
1799 int packet_offset;
1800 unsigned long flags;
1801
1802 dbg("%s - port %d", __func__, port->number);
1803
1804 if (port->port.count <= 0)
1805 return;
1806
1807 tty = port->port.tty;
1808 if (!tty) {
1809 dbg("%s - bad tty pointer - exiting",__func__);
1810 return;
1811 }
1812
1813 priv = usb_get_serial_port_data(port);
1814 if (!priv) {
1815 dbg("%s - bad port private data pointer - exiting", __func__);
1816 return;
1817 }
1818
1819 urb = port->read_urb;
1820 if (!urb) {
1821 dbg("%s - bad read_urb pointer - exiting", __func__);
1822 return;
1823 }
1824
1825 data = urb->transfer_buffer;
1826
1827 if (priv->rx_processed) {
1828 dbg("%s - already processed: %d bytes, %d remain", __func__,
1829 priv->rx_processed,
1830 urb->actual_length - priv->rx_processed);
1831 } else {
1832 /* The first two bytes of every read packet are status */
1833 if (urb->actual_length > 2) {
1834 usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data);
1835 } else {
1836 dbg("Status only: %03oo %03oo",data[0],data[1]);
1837 }
1838 }
1839
1840
1841 /* TO DO -- check for hung up line and handle appropriately: */
1842 /* send hangup */
1843 /* See acm.c - you do a tty_hangup - eg tty_hangup(tty) */
1844 /* if CD is dropped and the line is not CLOCAL then we should hangup */
1845
1846 need_flip = 0;
1847 for (packet_offset = priv->rx_processed; packet_offset < urb->actual_length; packet_offset += PKTSZ) {
1848 int length;
1849
1850 /* Compare new line status to the old one, signal if different */
1851 /* N.B. packet may be processed more than once, but differences
1852 * are only processed once. */
1853 if (priv != NULL) {
1854 char new_status = data[packet_offset+0] & FTDI_STATUS_B0_MASK;
1855 if (new_status != priv->prev_status) {
1856 priv->diff_status |= new_status ^ priv->prev_status;
1857 wake_up_interruptible(&priv->delta_msr_wait);
1858 priv->prev_status = new_status;
1859 }
1860 }
1861
1862 length = min(PKTSZ, urb->actual_length-packet_offset)-2;
1863 if (length < 0) {
1864 err("%s - bad packet length: %d", __func__, length+2);
1865 length = 0;
1866 }
1867
1868 if (priv->rx_flags & THROTTLED) {
1869 dbg("%s - throttled", __func__);
1870 break;
1871 }
1872 if (tty_buffer_request_room(tty, length) < length) {
1873 /* break out & wait for throttling/unthrottling to happen */
1874 dbg("%s - receive room low", __func__);
1875 break;
1876 }
1877
1878 /* Handle errors and break */
1879 error_flag = TTY_NORMAL;
1880 /* Although the device uses a bitmask and hence can have multiple */
1881 /* errors on a packet - the order here sets the priority the */
1882 /* error is returned to the tty layer */
1883
1884 if ( data[packet_offset+1] & FTDI_RS_OE ) {
1885 error_flag = TTY_OVERRUN;
1886 dbg("OVERRRUN error");
1887 }
1888 if ( data[packet_offset+1] & FTDI_RS_BI ) {
1889 error_flag = TTY_BREAK;
1890 dbg("BREAK received");
1891 }
1892 if ( data[packet_offset+1] & FTDI_RS_PE ) {
1893 error_flag = TTY_PARITY;
1894 dbg("PARITY error");
1895 }
1896 if ( data[packet_offset+1] & FTDI_RS_FE ) {
1897 error_flag = TTY_FRAME;
1898 dbg("FRAMING error");
1899 }
1900 if (length > 0) {
1901 for (i = 2; i < length+2; i++) {
1902 /* Note that the error flag is duplicated for
1903 every character received since we don't know
1904 which character it applied to */
1905 tty_insert_flip_char(tty, data[packet_offset+i], error_flag);
1906 }
1907 need_flip = 1;
1908 }
1909
1910 #ifdef NOT_CORRECT_BUT_KEEPING_IT_FOR_NOW
1911 /* if a parity error is detected you get status packets forever
1912 until a character is sent without a parity error.
1913 This doesn't work well since the application receives a never
1914 ending stream of bad data - even though new data hasn't been sent.
1915 Therefore I (bill) have taken this out.
1916 However - this might make sense for framing errors and so on
1917 so I am leaving the code in for now.
1918 */
1919 else {
1920 if (error_flag != TTY_NORMAL){
1921 dbg("error_flag is not normal");
1922 /* In this case it is just status - if that is an error send a bad character */
1923 if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
1924 tty_flip_buffer_push(tty);
1925 }
1926 tty_insert_flip_char(tty, 0xff, error_flag);
1927 need_flip = 1;
1928 }
1929 }
1930 #endif
1931 } /* "for(packet_offset=0..." */
1932
1933 /* Low latency */
1934 if (need_flip) {
1935 tty_flip_buffer_push(tty);
1936 }
1937
1938 if (packet_offset < urb->actual_length) {
1939 /* not completely processed - record progress */
1940 priv->rx_processed = packet_offset;
1941 dbg("%s - incomplete, %d bytes processed, %d remain",
1942 __func__, packet_offset,
1943 urb->actual_length - packet_offset);
1944 /* check if we were throttled while processing */
1945 spin_lock_irqsave(&priv->rx_lock, flags);
1946 if (priv->rx_flags & THROTTLED) {
1947 priv->rx_flags |= ACTUALLY_THROTTLED;
1948 spin_unlock_irqrestore(&priv->rx_lock, flags);
1949 dbg("%s - deferring remainder until unthrottled",
1950 __func__);
1951 return;
1952 }
1953 spin_unlock_irqrestore(&priv->rx_lock, flags);
1954 /* if the port is closed stop trying to read */
1955 if (port->port.count > 0){
1956 /* delay processing of remainder */
1957 schedule_delayed_work(&priv->rx_work, 1);
1958 } else {
1959 dbg("%s - port is closed", __func__);
1960 }
1961 return;
1962 }
1963
1964 /* urb is completely processed */
1965 priv->rx_processed = 0;
1966
1967 /* if the port is closed stop trying to read */
1968 if (port->port.count > 0){
1969 /* Continue trying to always read */
1970 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
1971 usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress),
1972 port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length,
1973 ftdi_read_bulk_callback, port);
1974
1975 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
1976 if (result)
1977 err("%s - failed resubmitting read urb, error %d", __func__, result);
1978 }
1979
1980 return;
1981 } /* ftdi_process_read */
1982
1983
1984 static void ftdi_break_ctl(struct tty_struct *tty, int break_state)
1985 {
1986 struct usb_serial_port *port = tty->driver_data;
1987 struct ftdi_private *priv = usb_get_serial_port_data(port);
1988 __u16 urb_value = 0;
1989 char buf[1];
1990
1991 /* break_state = -1 to turn on break, and 0 to turn off break */
1992 /* see drivers/char/tty_io.c to see it used */
1993 /* last_set_data_urb_value NEVER has the break bit set in it */
1994
1995 if (break_state) {
1996 urb_value = priv->last_set_data_urb_value | FTDI_SIO_SET_BREAK;
1997 } else {
1998 urb_value = priv->last_set_data_urb_value;
1999 }
2000
2001
2002 if (usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0),
2003 FTDI_SIO_SET_DATA_REQUEST,
2004 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2005 urb_value , priv->interface,
2006 buf, 0, WDR_TIMEOUT) < 0) {
2007 err("%s FAILED to enable/disable break state (state was %d)", __func__,break_state);
2008 }
2009
2010 dbg("%s break state is %d - urb is %d", __func__,break_state, urb_value);
2011
2012 }
2013
2014
2015 /* old_termios contains the original termios settings and tty->termios contains
2016 * the new setting to be used
2017 * WARNING: set_termios calls this with old_termios in kernel space
2018 */
2019
2020 static void ftdi_set_termios(struct tty_struct *tty,
2021 struct usb_serial_port *port, struct ktermios *old_termios)
2022 { /* ftdi_termios */
2023 struct usb_device *dev = port->serial->dev;
2024 struct ftdi_private *priv = usb_get_serial_port_data(port);
2025 struct ktermios *termios = tty->termios;
2026 unsigned int cflag = termios->c_cflag;
2027 __u16 urb_value; /* will hold the new flags */
2028 char buf[1]; /* Perhaps I should dynamically alloc this? */
2029
2030 // Added for xon/xoff support
2031 unsigned int iflag = termios->c_iflag;
2032 unsigned char vstop;
2033 unsigned char vstart;
2034
2035 dbg("%s", __func__);
2036
2037 /* Force baud rate if this device requires it, unless it is set to B0. */
2038 if (priv->force_baud && ((termios->c_cflag & CBAUD) != B0)) {
2039 dbg("%s: forcing baud rate for this device", __func__);
2040 tty_encode_baud_rate(tty, priv->force_baud,
2041 priv->force_baud);
2042 }
2043
2044 /* Force RTS-CTS if this device requires it. */
2045 if (priv->force_rtscts) {
2046 dbg("%s: forcing rtscts for this device", __func__);
2047 termios->c_cflag |= CRTSCTS;
2048 }
2049
2050 cflag = termios->c_cflag;
2051
2052 /* FIXME -For this cut I don't care if the line is really changing or
2053 not - so just do the change regardless - should be able to
2054 compare old_termios and tty->termios */
2055 /* NOTE These routines can get interrupted by
2056 ftdi_sio_read_bulk_callback - need to examine what this
2057 means - don't see any problems yet */
2058
2059 /* Set number of data bits, parity, stop bits */
2060
2061 termios->c_cflag &= ~CMSPAR;
2062
2063 urb_value = 0;
2064 urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 :
2065 FTDI_SIO_SET_DATA_STOP_BITS_1);
2066 urb_value |= (cflag & PARENB ?
2067 (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD :
2068 FTDI_SIO_SET_DATA_PARITY_EVEN) :
2069 FTDI_SIO_SET_DATA_PARITY_NONE);
2070 if (cflag & CSIZE) {
2071 switch (cflag & CSIZE) {
2072 case CS5: urb_value |= 5; dbg("Setting CS5"); break;
2073 case CS6: urb_value |= 6; dbg("Setting CS6"); break;
2074 case CS7: urb_value |= 7; dbg("Setting CS7"); break;
2075 case CS8: urb_value |= 8; dbg("Setting CS8"); break;
2076 default:
2077 err("CSIZE was set but not CS5-CS8");
2078 }
2079 }
2080
2081 /* This is needed by the break command since it uses the same command - but is
2082 * or'ed with this value */
2083 priv->last_set_data_urb_value = urb_value;
2084
2085 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2086 FTDI_SIO_SET_DATA_REQUEST,
2087 FTDI_SIO_SET_DATA_REQUEST_TYPE,
2088 urb_value , priv->interface,
2089 buf, 0, WDR_SHORT_TIMEOUT) < 0) {
2090 err("%s FAILED to set databits/stopbits/parity", __func__);
2091 }
2092
2093 /* Now do the baudrate */
2094 if ((cflag & CBAUD) == B0 ) {
2095 /* Disable flow control */
2096 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
2097 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2098 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2099 0, priv->interface,
2100 buf, 0, WDR_TIMEOUT) < 0) {
2101 err("%s error from disable flowcontrol urb", __func__);
2102 }
2103 /* Drop RTS and DTR */
2104 clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2105 } else {
2106 /* set the baudrate determined before */
2107 if (change_speed(tty, port)) {
2108 err("%s urb failed to set baudrate", __func__);
2109 }
2110 /* Ensure RTS and DTR are raised when baudrate changed from 0 */
2111 if (!old_termios || (old_termios->c_cflag & CBAUD) == B0) {
2112 set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
2113 }
2114 }
2115
2116 /* Set flow control */
2117 /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */
2118 if (cflag & CRTSCTS) {
2119 dbg("%s Setting to CRTSCTS flow control", __func__);
2120 if (usb_control_msg(dev,
2121 usb_sndctrlpipe(dev, 0),
2122 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2123 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2124 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface),
2125 buf, 0, WDR_TIMEOUT) < 0) {
2126 err("urb failed to set to rts/cts flow control");
2127 }
2128
2129 } else {
2130 /*
2131 * Xon/Xoff code
2132 *
2133 * Check the IXOFF status in the iflag component of the termios structure
2134 * if IXOFF is not set, the pre-xon/xoff code is executed.
2135 */
2136 if (iflag & IXOFF) {
2137 dbg("%s request to enable xonxoff iflag=%04x",__func__,iflag);
2138 // Try to enable the XON/XOFF on the ftdi_sio
2139 // Set the vstart and vstop -- could have been done up above where
2140 // a lot of other dereferencing is done but that would be very
2141 // inefficient as vstart and vstop are not always needed
2142 vstart = termios->c_cc[VSTART];
2143 vstop = termios->c_cc[VSTOP];
2144 urb_value=(vstop << 8) | (vstart);
2145
2146 if (usb_control_msg(dev,
2147 usb_sndctrlpipe(dev, 0),
2148 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2149 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2150 urb_value , (FTDI_SIO_XON_XOFF_HS
2151 | priv->interface),
2152 buf, 0, WDR_TIMEOUT) < 0) {
2153 err("urb failed to set to xon/xoff flow control");
2154 }
2155 } else {
2156 /* else clause to only run if cfag ! CRTSCTS and iflag ! XOFF */
2157 /* CHECKME Assuming XON/XOFF handled by tty stack - not by device */
2158 dbg("%s Turning off hardware flow control", __func__);
2159 if (usb_control_msg(dev,
2160 usb_sndctrlpipe(dev, 0),
2161 FTDI_SIO_SET_FLOW_CTRL_REQUEST,
2162 FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
2163 0, priv->interface,
2164 buf, 0, WDR_TIMEOUT) < 0) {
2165 err("urb failed to clear flow control");
2166 }
2167 }
2168
2169 }
2170 return;
2171 }
2172
2173 static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
2174 {
2175 struct usb_serial_port *port = tty->driver_data;
2176 struct ftdi_private *priv = usb_get_serial_port_data(port);
2177 unsigned char buf[2];
2178 int ret;
2179
2180 dbg("%s TIOCMGET", __func__);
2181 switch (priv->chip_type) {
2182 case SIO:
2183 /* Request the status from the device */
2184 if ((ret = usb_control_msg(port->serial->dev,
2185 usb_rcvctrlpipe(port->serial->dev, 0),
2186 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2187 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2188 0, 0,
2189 buf, 1, WDR_TIMEOUT)) < 0 ) {
2190 err("%s Could not get modem status of device - err: %d", __func__,
2191 ret);
2192 return(ret);
2193 }
2194 break;
2195 case FT8U232AM:
2196 case FT232BM:
2197 case FT2232C:
2198 case FT232RL:
2199 /* the 8U232AM returns a two byte value (the sio is a 1 byte value) - in the same
2200 format as the data returned from the in point */
2201 if ((ret = usb_control_msg(port->serial->dev,
2202 usb_rcvctrlpipe(port->serial->dev, 0),
2203 FTDI_SIO_GET_MODEM_STATUS_REQUEST,
2204 FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
2205 0, priv->interface,
2206 buf, 2, WDR_TIMEOUT)) < 0 ) {
2207 err("%s Could not get modem status of device - err: %d", __func__,
2208 ret);
2209 return(ret);
2210 }
2211 break;
2212 default:
2213 return -EFAULT;
2214 break;
2215 }
2216
2217 return (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
2218 (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) |
2219 (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) |
2220 (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0) |
2221 priv->last_dtr_rts;
2222 }
2223
2224 static int ftdi_tiocmset(struct tty_struct *tty, struct file * file,
2225 unsigned int set, unsigned int clear)
2226 {
2227 struct usb_serial_port *port = tty->driver_data;
2228 dbg("%s TIOCMSET", __func__);
2229 return update_mctrl(port, set, clear);
2230 }
2231
2232
2233 static int ftdi_ioctl(struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg)
2234 {
2235 struct usb_serial_port *port = tty->driver_data;
2236 struct ftdi_private *priv = usb_get_serial_port_data(port);
2237
2238 dbg("%s cmd 0x%04x", __func__, cmd);
2239
2240 /* Based on code from acm.c and others */
2241 switch (cmd) {
2242
2243 case TIOCGSERIAL: /* gets serial port data */
2244 return get_serial_info(port, (struct serial_struct __user *) arg);
2245
2246 case TIOCSSERIAL: /* sets serial port data */
2247 return set_serial_info(tty, port, (struct serial_struct __user *) arg);
2248
2249 /*
2250 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
2251 * - mask passed in arg for lines of interest
2252 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
2253 * Caller should use TIOCGICOUNT to see which one it was.
2254 *
2255 * This code is borrowed from linux/drivers/char/serial.c
2256 */
2257 case TIOCMIWAIT:
2258 while (priv != NULL) {
2259 interruptible_sleep_on(&priv->delta_msr_wait);
2260 /* see if a signal did it */
2261 if (signal_pending(current))
2262 return -ERESTARTSYS;
2263 else {
2264 char diff = priv->diff_status;
2265
2266 if (diff == 0) {
2267 return -EIO; /* no change => error */
2268 }
2269
2270 /* Consume all events */
2271 priv->diff_status = 0;
2272
2273 /* Return 0 if caller wanted to know about these bits */
2274 if ( ((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) ||
2275 ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) ||
2276 ((arg & TIOCM_CD) && (diff & FTDI_RS0_RLSD)) ||
2277 ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS)) ) {
2278 return 0;
2279 }
2280 /*
2281 * Otherwise caller can't care less about what happened,
2282 * and so we continue to wait for more events.
2283 */
2284 }
2285 }
2286 return 0;
2287 default:
2288 break;
2289 }
2290 /* This is not necessarily an error - turns out the higher layers will do
2291 * some ioctls itself (see comment above)
2292 */
2293 dbg("%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h", __func__, cmd);
2294 return -ENOIOCTLCMD;
2295 }
2296
2297 static void ftdi_throttle(struct tty_struct *tty)
2298 {
2299 struct usb_serial_port *port = tty->driver_data;
2300 struct ftdi_private *priv = usb_get_serial_port_data(port);
2301 unsigned long flags;
2302
2303 dbg("%s - port %d", __func__, port->number);
2304
2305 spin_lock_irqsave(&priv->rx_lock, flags);
2306 priv->rx_flags |= THROTTLED;
2307 spin_unlock_irqrestore(&priv->rx_lock, flags);
2308 }
2309
2310
2311 static void ftdi_unthrottle(struct tty_struct *tty)
2312 {
2313 struct usb_serial_port *port = tty->driver_data;
2314 struct ftdi_private *priv = usb_get_serial_port_data(port);
2315 int actually_throttled;
2316 unsigned long flags;
2317
2318 dbg("%s - port %d", __func__, port->number);
2319
2320 spin_lock_irqsave(&priv->rx_lock, flags);
2321 actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED;
2322 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
2323 spin_unlock_irqrestore(&priv->rx_lock, flags);
2324
2325 if (actually_throttled)
2326 schedule_delayed_work(&priv->rx_work, 0);
2327 }
2328
2329 static int __init ftdi_init (void)
2330 {
2331 int retval;
2332
2333 dbg("%s", __func__);
2334 if (vendor > 0 && product > 0) {
2335 /* Add user specified VID/PID to reserved element of table. */
2336 int i;
2337 for (i = 0; id_table_combined[i].idVendor; i++)
2338 ;
2339 id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
2340 id_table_combined[i].idVendor = vendor;
2341 id_table_combined[i].idProduct = product;
2342 }
2343 retval = usb_serial_register(&ftdi_sio_device);
2344 if (retval)
2345 goto failed_sio_register;
2346 retval = usb_register(&ftdi_driver);
2347 if (retval)
2348 goto failed_usb_register;
2349
2350 info(DRIVER_VERSION ":" DRIVER_DESC);
2351 return 0;
2352 failed_usb_register:
2353 usb_serial_deregister(&ftdi_sio_device);
2354 failed_sio_register:
2355 return retval;
2356 }
2357
2358
2359 static void __exit ftdi_exit (void)
2360 {
2361
2362 dbg("%s", __func__);
2363
2364 usb_deregister (&ftdi_driver);
2365 usb_serial_deregister (&ftdi_sio_device);
2366
2367 }
2368
2369
2370 module_init(ftdi_init);
2371 module_exit(ftdi_exit);
2372
2373 MODULE_AUTHOR( DRIVER_AUTHOR );
2374 MODULE_DESCRIPTION( DRIVER_DESC );
2375 MODULE_LICENSE("GPL");
2376
2377 module_param(debug, bool, S_IRUGO | S_IWUSR);
2378 MODULE_PARM_DESC(debug, "Debug enabled or not");
2379 module_param(vendor, ushort, 0);
2380 MODULE_PARM_DESC(vendor, "User specified vendor ID (default="
2381 __MODULE_STRING(FTDI_VID)")");
2382 module_param(product, ushort, 0);
2383 MODULE_PARM_DESC(vendor, "User specified product ID");
2384
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