Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * USB FTDI SIO driver | |
3 | * | |
5c09d144 DB |
4 | * Copyright (C) 1999 - 2001 |
5 | * Greg Kroah-Hartman (greg@kroah.com) | |
1da177e4 LT |
6 | * Bill Ryder (bryder@sgi.com) |
7 | * Copyright (C) 2002 | |
8 | * Kuba Ober (kuba@mareimbrium.org) | |
9 | * | |
5c09d144 DB |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
1da177e4 LT |
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 | * | |
504b55cc GKH |
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. | |
1da177e4 LT |
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 | ||
1da177e4 LT |
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> | |
a969888c | 42 | #include <linux/usb/serial.h> |
1da177e4 LT |
43 | #include "ftdi_sio.h" |
44 | ||
45 | /* | |
46 | * Version Information | |
47 | */ | |
8f977e42 | 48 | #define DRIVER_VERSION "v1.4.3" |
1da177e4 LT |
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; | |
fdcb0a0f IA |
53 | static __u16 vendor = FTDI_VID; |
54 | static __u16 product; | |
1da177e4 | 55 | |
0ffbbe25 ON |
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 | ||
669a6db1 | 79 | speed_t force_baud; /* if non-zero, force the baud rate to this value */ |
0ffbbe25 ON |
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 | ||
8f977e42 IA |
88 | /* struct ftdi_sio_quirk is used by devices requiring special attention. */ |
89 | struct ftdi_sio_quirk { | |
fa91d43b | 90 | int (*probe)(struct usb_serial *); |
0ffbbe25 | 91 | void (*port_probe)(struct ftdi_private *); /* Special settings for probed ports. */ |
8f977e42 IA |
92 | }; |
93 | ||
20734345 | 94 | static int ftdi_jtag_probe (struct usb_serial *serial); |
0ffbbe25 ON |
95 | static void ftdi_USB_UIRT_setup (struct ftdi_private *priv); |
96 | static void ftdi_HE_TIRA1_setup (struct ftdi_private *priv); | |
8f977e42 | 97 | |
20734345 HW |
98 | static struct ftdi_sio_quirk ftdi_jtag_quirk = { |
99 | .probe = ftdi_jtag_probe, | |
fa91d43b TL |
100 | }; |
101 | ||
8f977e42 | 102 | static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = { |
0ffbbe25 | 103 | .port_probe = ftdi_USB_UIRT_setup, |
8f977e42 IA |
104 | }; |
105 | ||
106 | static struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = { | |
0ffbbe25 | 107 | .port_probe = ftdi_HE_TIRA1_setup, |
1da177e4 LT |
108 | }; |
109 | ||
110 | /* | |
111 | * The 8U232AM has the same API as the sio except for: | |
112 | * - it can support MUCH higher baudrates; up to: | |
113 | * o 921600 for RS232 and 2000000 for RS422/485 at 48MHz | |
114 | * o 230400 at 12MHz | |
115 | * so .. 8U232AM's baudrate setting codes are different | |
116 | * - it has a two byte status code. | |
117 | * - it returns characters every 16ms (the FTDI does it every 40ms) | |
118 | * | |
119 | * the bcdDevice value is used to differentiate FT232BM and FT245BM from | |
120 | * the earlier FT8U232AM and FT8U232BM. For now, include all known VID/PID | |
121 | * combinations in both tables. | |
8f977e42 IA |
122 | * FIXME: perhaps bcdDevice can also identify 12MHz FT8U232AM devices, |
123 | * but I don't know if those ever went into mass production. [Ian Abbott] | |
1da177e4 LT |
124 | */ |
125 | ||
126 | ||
1da177e4 LT |
127 | |
128 | static struct usb_device_id id_table_combined [] = { | |
2011e924 JD |
129 | { USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) }, |
130 | { USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) }, | |
72a9f958 | 131 | { USB_DEVICE(FTDI_VID, FTDI_ACTZWAVE_PID) }, |
1da177e4 | 132 | { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) }, |
69737dfa | 133 | { USB_DEVICE(FTDI_VID, FTDI_IPLUS_PID) }, |
d099321b | 134 | { USB_DEVICE(FTDI_VID, FTDI_IPLUS2_PID) }, |
fad14a0d | 135 | { USB_DEVICE(FTDI_VID, FTDI_DMX4ALL) }, |
1da177e4 LT |
136 | { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) }, |
137 | { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) }, | |
138 | { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) }, | |
d8b21606 | 139 | { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) }, |
1da177e4 | 140 | { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) }, |
c0f8d561 | 141 | { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) }, |
1da177e4 | 142 | { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) }, |
2adb80e9 | 143 | { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) }, |
1da177e4 LT |
144 | { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) }, |
145 | { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) }, | |
146 | { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) }, | |
147 | { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) }, | |
148 | { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) }, | |
149 | { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) }, | |
150 | { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) }, | |
151 | { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) }, | |
152 | { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) }, | |
153 | { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) }, | |
154 | { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) }, | |
155 | { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) }, | |
156 | { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) }, | |
8f977e42 IA |
157 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) }, |
158 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) }, | |
159 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) }, | |
160 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) }, | |
161 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) }, | |
162 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) }, | |
163 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) }, | |
164 | { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) }, | |
1da177e4 | 165 | { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) }, |
274a4bbc | 166 | { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) }, |
868e440d | 167 | { USB_DEVICE(FTDI_VID, FTDI_USBX_707_PID) }, |
1da177e4 LT |
168 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) }, |
169 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) }, | |
170 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) }, | |
171 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) }, | |
a1484827 | 172 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2106_PID) }, |
1da177e4 LT |
173 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) }, |
174 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) }, | |
175 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) }, | |
176 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) }, | |
177 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) }, | |
178 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) }, | |
179 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) }, | |
180 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) }, | |
181 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) }, | |
182 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) }, | |
183 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) }, | |
184 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) }, | |
185 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) }, | |
186 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) }, | |
187 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) }, | |
188 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) }, | |
189 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) }, | |
190 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) }, | |
191 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) }, | |
192 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) }, | |
193 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) }, | |
194 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) }, | |
195 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) }, | |
196 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) }, | |
197 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) }, | |
198 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) }, | |
199 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) }, | |
200 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) }, | |
201 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) }, | |
202 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) }, | |
203 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) }, | |
204 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) }, | |
205 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) }, | |
206 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) }, | |
207 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) }, | |
208 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) }, | |
209 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) }, | |
210 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) }, | |
211 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) }, | |
212 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) }, | |
213 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) }, | |
214 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) }, | |
215 | { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) }, | |
216 | { USB_DEVICE(OCT_VID, OCT_US101_PID) }, | |
8f977e42 IA |
217 | { USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID), |
218 | .driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk }, | |
219 | { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID), | |
220 | .driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk }, | |
1da177e4 LT |
221 | { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) }, |
222 | { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) }, | |
223 | { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) }, | |
224 | { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) }, | |
8f977e42 IA |
225 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) }, |
226 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) }, | |
227 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) }, | |
228 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) }, | |
229 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) }, | |
230 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) }, | |
231 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) }, | |
232 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) }, | |
233 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) }, | |
234 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) }, | |
235 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) }, | |
236 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) }, | |
237 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) }, | |
238 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) }, | |
239 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) }, | |
240 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) }, | |
1da177e4 | 241 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) }, |
47900743 | 242 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) }, |
e6ac4a40 IA |
243 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) }, |
244 | { USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) }, | |
207c47e1 | 245 | { USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) }, |
bde62185 | 246 | { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) }, |
4eaf60e0 TS |
247 | { USB_DEVICE(FTDI_VID, FTDI_IBS_US485_PID) }, |
248 | { USB_DEVICE(FTDI_VID, FTDI_IBS_PICPRO_PID) }, | |
249 | { USB_DEVICE(FTDI_VID, FTDI_IBS_PCMCIA_PID) }, | |
250 | { USB_DEVICE(FTDI_VID, FTDI_IBS_PK1_PID) }, | |
251 | { USB_DEVICE(FTDI_VID, FTDI_IBS_RS232MON_PID) }, | |
252 | { USB_DEVICE(FTDI_VID, FTDI_IBS_APP70_PID) }, | |
253 | { USB_DEVICE(FTDI_VID, FTDI_IBS_PEDO_PID) }, | |
254 | { USB_DEVICE(FTDI_VID, FTDI_IBS_PROD_PID) }, | |
e6ac4a40 | 255 | /* |
42f8aa94 PS |
256 | * Due to many user requests for multiple ELV devices we enable |
257 | * them by default. | |
e6ac4a40 | 258 | */ |
42f8aa94 PS |
259 | { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) }, |
260 | { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) }, | |
261 | { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) }, | |
262 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) }, | |
263 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) }, | |
264 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) }, | |
265 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) }, | |
266 | { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) }, | |
267 | { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) }, | |
268 | { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) }, | |
269 | { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) }, | |
270 | { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) }, | |
271 | { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) }, | |
272 | { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) }, | |
273 | { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) }, | |
274 | { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) }, | |
275 | { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) }, | |
276 | { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) }, | |
277 | { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) }, | |
5c09d144 DB |
278 | { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) }, |
279 | { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) }, | |
280 | { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) }, | |
281 | { USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) }, | |
282 | { USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) }, | |
283 | { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) }, | |
284 | { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) }, | |
ec434e9b | 285 | { USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) }, |
1da177e4 LT |
286 | { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) }, |
287 | { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) }, | |
288 | { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) }, | |
289 | { USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) }, | |
e6ac4a40 | 290 | { USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) }, |
1da177e4 | 291 | { USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) }, |
ef31fec0 | 292 | { USB_DEVICE(TTI_VID, TTI_QL355P_PID) }, |
6f92872c | 293 | { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) }, |
1da177e4 LT |
294 | { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) }, |
295 | { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) }, | |
296 | { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) }, | |
297 | { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) }, | |
6f92872c IA |
298 | { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) }, |
299 | { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) }, | |
e6ac4a40 IA |
300 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) }, |
301 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) }, | |
302 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) }, | |
303 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) }, | |
304 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) }, | |
305 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) }, | |
306 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) }, | |
307 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) }, | |
6f92872c | 308 | { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) }, |
8f977e42 | 309 | { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) }, |
34d1a8aa IA |
310 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) }, |
311 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_YS_PID) }, | |
9b1513d9 IA |
312 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) }, |
313 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) }, | |
34d1a8aa IA |
314 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_IC_PID) }, |
315 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_DB9_PID) }, | |
316 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_RS232_PID) }, | |
317 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y9_PID) }, | |
740a4282 IA |
318 | { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) }, |
319 | { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) }, | |
9b1513d9 | 320 | { USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) }, |
c1f8ea7d SH |
321 | { USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) }, |
322 | { USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) }, | |
c9c7746d RS |
323 | { USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) }, |
324 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) }, | |
09c280a2 | 325 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) }, |
c9c7746d | 326 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) }, |
09c280a2 | 327 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HRC_PID) }, |
34910434 | 328 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16IC_PID) }, |
b4723ae3 IA |
329 | { USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) }, |
330 | { USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) }, | |
effac8be | 331 | { USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) }, |
641adaae | 332 | { USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) }, |
7e1c0b86 | 333 | { USB_DEVICE(FTDI_VID, FTDI_ECLO_COM_1WIRE_PID) }, |
a94b52ac IA |
334 | { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) }, |
335 | { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) }, | |
ce40d290 | 336 | { USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) }, |
cdd3b156 | 337 | { USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) }, |
7e0258fd | 338 | { USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) }, |
bf58fbd5 | 339 | { USB_DEVICE(ICOM_ID1_VID, ICOM_ID1_PID) }, |
62a13db3 | 340 | { USB_DEVICE(PAPOUCH_VID, PAPOUCH_TMU_PID) }, |
20a0f47e | 341 | { USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) }, |
eb79b4fd | 342 | { USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) }, |
48437486 | 343 | { USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) }, |
e1979fef | 344 | { USB_DEVICE(TESTO_VID, TESTO_USB_INTERFACE_PID) }, |
eaede2cb | 345 | { USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) }, |
9978f9e1 IA |
346 | { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) }, |
347 | { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) }, | |
348 | { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) }, | |
40c36092 | 349 | { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) }, |
822c7ef4 | 350 | { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) }, |
762e92fa | 351 | { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) }, |
d7fde2d6 | 352 | { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) }, |
4bb0ef19 | 353 | { USB_DEVICE(FTDI_VID, FTDI_ELSTER_UNICOM_PID) }, |
fa91d43b | 354 | { USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID), |
20734345 HW |
355 | .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, |
356 | { USB_DEVICE(FIC_VID, FIC_NEO1973_DEBUG_PID), | |
357 | .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, | |
358 | { USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID), | |
359 | .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, | |
fdcb0a0f IA |
360 | { }, /* Optional parameter entry */ |
361 | { } /* Terminating entry */ | |
1da177e4 LT |
362 | }; |
363 | ||
364 | MODULE_DEVICE_TABLE (usb, id_table_combined); | |
365 | ||
366 | static struct usb_driver ftdi_driver = { | |
367 | .name = "ftdi_sio", | |
368 | .probe = usb_serial_probe, | |
369 | .disconnect = usb_serial_disconnect, | |
370 | .id_table = id_table_combined, | |
5c09d144 | 371 | .no_dynamic_id = 1, |
1da177e4 LT |
372 | }; |
373 | ||
4c4c9432 | 374 | static const char *ftdi_chip_name[] = { |
1da177e4 LT |
375 | [SIO] = "SIO", /* the serial part of FT8U100AX */ |
376 | [FT8U232AM] = "FT8U232AM", | |
377 | [FT232BM] = "FT232BM", | |
378 | [FT2232C] = "FT2232C", | |
d8b21606 | 379 | [FT232RL] = "FT232RL", |
1da177e4 LT |
380 | }; |
381 | ||
382 | ||
383 | /* Constants for read urb and write urb */ | |
384 | #define BUFSZ 512 | |
385 | #define PKTSZ 64 | |
386 | ||
387 | /* rx_flags */ | |
388 | #define THROTTLED 0x01 | |
389 | #define ACTUALLY_THROTTLED 0x02 | |
390 | ||
1da177e4 LT |
391 | /* Used for TIOCMIWAIT */ |
392 | #define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD) | |
393 | #define FTDI_STATUS_B1_MASK (FTDI_RS_BI) | |
394 | /* End TIOCMIWAIT */ | |
395 | ||
396 | #define FTDI_IMPL_ASYNC_FLAGS = ( ASYNC_SPD_HI | ASYNC_SPD_VHI \ | |
397 | ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP ) | |
398 | ||
399 | /* function prototypes for a FTDI serial converter */ | |
8f977e42 | 400 | static int ftdi_sio_probe (struct usb_serial *serial, const struct usb_device_id *id); |
1da177e4 | 401 | static void ftdi_shutdown (struct usb_serial *serial); |
12bdbe03 JR |
402 | static int ftdi_sio_port_probe (struct usb_serial_port *port); |
403 | static int ftdi_sio_port_remove (struct usb_serial_port *port); | |
1da177e4 LT |
404 | static int ftdi_open (struct usb_serial_port *port, struct file *filp); |
405 | static void ftdi_close (struct usb_serial_port *port, struct file *filp); | |
406 | static int ftdi_write (struct usb_serial_port *port, const unsigned char *buf, int count); | |
407 | static int ftdi_write_room (struct usb_serial_port *port); | |
408 | static int ftdi_chars_in_buffer (struct usb_serial_port *port); | |
7d12e780 DH |
409 | static void ftdi_write_bulk_callback (struct urb *urb); |
410 | static void ftdi_read_bulk_callback (struct urb *urb); | |
c4028958 | 411 | static void ftdi_process_read (struct work_struct *work); |
606d099c | 412 | static void ftdi_set_termios (struct usb_serial_port *port, struct ktermios * old); |
1da177e4 LT |
413 | static int ftdi_tiocmget (struct usb_serial_port *port, struct file *file); |
414 | static int ftdi_tiocmset (struct usb_serial_port *port, struct file * file, unsigned int set, unsigned int clear); | |
415 | static int ftdi_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg); | |
416 | static void ftdi_break_ctl (struct usb_serial_port *port, int break_state ); | |
417 | static void ftdi_throttle (struct usb_serial_port *port); | |
418 | static void ftdi_unthrottle (struct usb_serial_port *port); | |
419 | ||
420 | static unsigned short int ftdi_232am_baud_base_to_divisor (int baud, int base); | |
421 | static unsigned short int ftdi_232am_baud_to_divisor (int baud); | |
422 | static __u32 ftdi_232bm_baud_base_to_divisor (int baud, int base); | |
423 | static __u32 ftdi_232bm_baud_to_divisor (int baud); | |
424 | ||
ea65370d | 425 | static struct usb_serial_driver ftdi_sio_device = { |
18fcac35 GKH |
426 | .driver = { |
427 | .owner = THIS_MODULE, | |
269bda1c | 428 | .name = "ftdi_sio", |
18fcac35 | 429 | }, |
269bda1c | 430 | .description = "FTDI USB Serial Device", |
d9b1b787 | 431 | .usb_driver = &ftdi_driver , |
8f977e42 | 432 | .id_table = id_table_combined, |
1da177e4 LT |
433 | .num_interrupt_in = 0, |
434 | .num_bulk_in = 1, | |
435 | .num_bulk_out = 1, | |
436 | .num_ports = 1, | |
8f977e42 | 437 | .probe = ftdi_sio_probe, |
12bdbe03 JR |
438 | .port_probe = ftdi_sio_port_probe, |
439 | .port_remove = ftdi_sio_port_remove, | |
1da177e4 LT |
440 | .open = ftdi_open, |
441 | .close = ftdi_close, | |
442 | .throttle = ftdi_throttle, | |
443 | .unthrottle = ftdi_unthrottle, | |
444 | .write = ftdi_write, | |
445 | .write_room = ftdi_write_room, | |
446 | .chars_in_buffer = ftdi_chars_in_buffer, | |
447 | .read_bulk_callback = ftdi_read_bulk_callback, | |
448 | .write_bulk_callback = ftdi_write_bulk_callback, | |
449 | .tiocmget = ftdi_tiocmget, | |
450 | .tiocmset = ftdi_tiocmset, | |
451 | .ioctl = ftdi_ioctl, | |
452 | .set_termios = ftdi_set_termios, | |
453 | .break_ctl = ftdi_break_ctl, | |
1da177e4 LT |
454 | .shutdown = ftdi_shutdown, |
455 | }; | |
456 | ||
1da177e4 LT |
457 | |
458 | #define WDR_TIMEOUT 5000 /* default urb timeout */ | |
279e1545 | 459 | #define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */ |
1da177e4 LT |
460 | |
461 | /* High and low are for DTR, RTS etc etc */ | |
462 | #define HIGH 1 | |
463 | #define LOW 0 | |
464 | ||
22465400 IA |
465 | /* number of outstanding urbs to prevent userspace DoS from happening */ |
466 | #define URB_UPPER_LIMIT 42 | |
467 | ||
1da177e4 LT |
468 | /* |
469 | * *************************************************************************** | |
fa91d43b | 470 | * Utility functions |
1da177e4 LT |
471 | * *************************************************************************** |
472 | */ | |
473 | ||
474 | static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base) | |
475 | { | |
476 | unsigned short int divisor; | |
477 | int divisor3 = base / 2 / baud; // divisor shifted 3 bits to the left | |
478 | if ((divisor3 & 0x7) == 7) divisor3 ++; // round x.7/8 up to x+1 | |
479 | divisor = divisor3 >> 3; | |
480 | divisor3 &= 0x7; | |
481 | if (divisor3 == 1) divisor |= 0xc000; else // 0.125 | |
482 | if (divisor3 >= 4) divisor |= 0x4000; else // 0.5 | |
483 | if (divisor3 != 0) divisor |= 0x8000; // 0.25 | |
484 | if (divisor == 1) divisor = 0; /* special case for maximum baud rate */ | |
485 | return divisor; | |
486 | } | |
487 | ||
488 | static unsigned short int ftdi_232am_baud_to_divisor(int baud) | |
489 | { | |
490 | return(ftdi_232am_baud_base_to_divisor(baud, 48000000)); | |
491 | } | |
492 | ||
493 | static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base) | |
494 | { | |
495 | static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 }; | |
496 | __u32 divisor; | |
497 | int divisor3 = base / 2 / baud; // divisor shifted 3 bits to the left | |
498 | divisor = divisor3 >> 3; | |
499 | divisor |= (__u32)divfrac[divisor3 & 0x7] << 14; | |
500 | /* Deal with special cases for highest baud rates. */ | |
501 | if (divisor == 1) divisor = 0; else // 1.0 | |
502 | if (divisor == 0x4001) divisor = 1; // 1.5 | |
503 | return divisor; | |
504 | } | |
505 | ||
506 | static __u32 ftdi_232bm_baud_to_divisor(int baud) | |
507 | { | |
508 | return(ftdi_232bm_baud_base_to_divisor(baud, 48000000)); | |
509 | } | |
510 | ||
74ede0ff IA |
511 | #define set_mctrl(port, set) update_mctrl((port), (set), 0) |
512 | #define clear_mctrl(port, clear) update_mctrl((port), 0, (clear)) | |
513 | ||
514 | static int update_mctrl(struct usb_serial_port *port, unsigned int set, unsigned int clear) | |
1da177e4 LT |
515 | { |
516 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
517 | char *buf; | |
74ede0ff | 518 | unsigned urb_value; |
1da177e4 | 519 | int rv; |
1da177e4 | 520 | |
74ede0ff IA |
521 | if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) { |
522 | dbg("%s - DTR|RTS not being set|cleared", __FUNCTION__); | |
523 | return 0; /* no change */ | |
524 | } | |
1da177e4 | 525 | |
1da177e4 | 526 | buf = kmalloc(1, GFP_NOIO); |
74ede0ff | 527 | if (!buf) { |
1da177e4 | 528 | return -ENOMEM; |
1da177e4 | 529 | } |
74ede0ff IA |
530 | |
531 | clear &= ~set; /* 'set' takes precedence over 'clear' */ | |
532 | urb_value = 0; | |
533 | if (clear & TIOCM_DTR) | |
534 | urb_value |= FTDI_SIO_SET_DTR_LOW; | |
535 | if (clear & TIOCM_RTS) | |
536 | urb_value |= FTDI_SIO_SET_RTS_LOW; | |
537 | if (set & TIOCM_DTR) | |
538 | urb_value |= FTDI_SIO_SET_DTR_HIGH; | |
539 | if (set & TIOCM_RTS) | |
540 | urb_value |= FTDI_SIO_SET_RTS_HIGH; | |
1da177e4 LT |
541 | rv = usb_control_msg(port->serial->dev, |
542 | usb_sndctrlpipe(port->serial->dev, 0), | |
5c09d144 | 543 | FTDI_SIO_SET_MODEM_CTRL_REQUEST, |
1da177e4 | 544 | FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE, |
74ede0ff | 545 | urb_value, priv->interface, |
1da177e4 LT |
546 | buf, 0, WDR_TIMEOUT); |
547 | ||
548 | kfree(buf); | |
74ede0ff IA |
549 | if (rv < 0) { |
550 | err("%s Error from MODEM_CTRL urb: DTR %s, RTS %s", | |
551 | __FUNCTION__, | |
552 | (set & TIOCM_DTR) ? "HIGH" : | |
553 | (clear & TIOCM_DTR) ? "LOW" : "unchanged", | |
554 | (set & TIOCM_RTS) ? "HIGH" : | |
555 | (clear & TIOCM_RTS) ? "LOW" : "unchanged"); | |
556 | } else { | |
557 | dbg("%s - DTR %s, RTS %s", __FUNCTION__, | |
558 | (set & TIOCM_DTR) ? "HIGH" : | |
559 | (clear & TIOCM_DTR) ? "LOW" : "unchanged", | |
560 | (set & TIOCM_RTS) ? "HIGH" : | |
561 | (clear & TIOCM_RTS) ? "LOW" : "unchanged"); | |
562 | priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set; | |
563 | } | |
1da177e4 LT |
564 | return rv; |
565 | } | |
566 | ||
567 | ||
568 | static __u32 get_ftdi_divisor(struct usb_serial_port * port); | |
569 | ||
570 | ||
571 | static int change_speed(struct usb_serial_port *port) | |
572 | { | |
573 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
574 | char *buf; | |
575 | __u16 urb_value; | |
576 | __u16 urb_index; | |
577 | __u32 urb_index_value; | |
578 | int rv; | |
579 | ||
580 | buf = kmalloc(1, GFP_NOIO); | |
581 | if (!buf) | |
582 | return -ENOMEM; | |
583 | ||
584 | urb_index_value = get_ftdi_divisor(port); | |
585 | urb_value = (__u16)urb_index_value; | |
586 | urb_index = (__u16)(urb_index_value >> 16); | |
587 | if (priv->interface) { /* FT2232C */ | |
588 | urb_index = (__u16)((urb_index << 8) | priv->interface); | |
589 | } | |
5c09d144 | 590 | |
1da177e4 LT |
591 | rv = usb_control_msg(port->serial->dev, |
592 | usb_sndctrlpipe(port->serial->dev, 0), | |
593 | FTDI_SIO_SET_BAUDRATE_REQUEST, | |
594 | FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE, | |
595 | urb_value, urb_index, | |
279e1545 | 596 | buf, 0, WDR_SHORT_TIMEOUT); |
1da177e4 LT |
597 | |
598 | kfree(buf); | |
599 | return rv; | |
600 | } | |
601 | ||
602 | ||
603 | static __u32 get_ftdi_divisor(struct usb_serial_port * port) | |
604 | { /* get_ftdi_divisor */ | |
605 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
606 | __u32 div_value = 0; | |
607 | int div_okay = 1; | |
608 | int baud; | |
609 | ||
610 | /* | |
611 | * The logic involved in setting the baudrate can be cleanly split in 3 steps. | |
612 | * Obtaining the actual baud rate is a little tricky since unix traditionally | |
613 | * somehow ignored the possibility to set non-standard baud rates. | |
614 | * 1. Standard baud rates are set in tty->termios->c_cflag | |
615 | * 2. If these are not enough, you can set any speed using alt_speed as follows: | |
616 | * - set tty->termios->c_cflag speed to B38400 | |
617 | * - set your real speed in tty->alt_speed; it gets ignored when | |
618 | * alt_speed==0, (or) | |
619 | * - call TIOCSSERIAL ioctl with (struct serial_struct) set as follows: | |
620 | * flags & ASYNC_SPD_MASK == ASYNC_SPD_[HI, VHI, SHI, WARP], this just | |
621 | * sets alt_speed to (HI: 57600, VHI: 115200, SHI: 230400, WARP: 460800) | |
622 | * ** Steps 1, 2 are done courtesy of tty_get_baud_rate | |
623 | * 3. You can also set baud rate by setting custom divisor as follows | |
624 | * - set tty->termios->c_cflag speed to B38400 | |
625 | * - call TIOCSSERIAL ioctl with (struct serial_struct) set as follows: | |
626 | * o flags & ASYNC_SPD_MASK == ASYNC_SPD_CUST | |
627 | * o custom_divisor set to baud_base / your_new_baudrate | |
628 | * ** Step 3 is done courtesy of code borrowed from serial.c - I should really | |
629 | * spend some time and separate+move this common code to serial.c, it is | |
630 | * replicated in nearly every serial driver you see. | |
631 | */ | |
632 | ||
633 | /* 1. Get the baud rate from the tty settings, this observes alt_speed hack */ | |
634 | ||
635 | baud = tty_get_baud_rate(port->tty); | |
636 | dbg("%s - tty_get_baud_rate reports speed %d", __FUNCTION__, baud); | |
637 | ||
638 | /* 2. Observe async-compatible custom_divisor hack, update baudrate if needed */ | |
639 | ||
640 | if (baud == 38400 && | |
641 | ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) && | |
642 | (priv->custom_divisor)) { | |
643 | baud = priv->baud_base / priv->custom_divisor; | |
644 | dbg("%s - custom divisor %d sets baud rate to %d", __FUNCTION__, priv->custom_divisor, baud); | |
645 | } | |
646 | ||
647 | /* 3. Convert baudrate to device-specific divisor */ | |
648 | ||
5c09d144 | 649 | if (!baud) baud = 9600; |
1da177e4 LT |
650 | switch(priv->chip_type) { |
651 | case SIO: /* SIO chip */ | |
652 | switch(baud) { | |
653 | case 300: div_value = ftdi_sio_b300; break; | |
654 | case 600: div_value = ftdi_sio_b600; break; | |
655 | case 1200: div_value = ftdi_sio_b1200; break; | |
656 | case 2400: div_value = ftdi_sio_b2400; break; | |
657 | case 4800: div_value = ftdi_sio_b4800; break; | |
658 | case 9600: div_value = ftdi_sio_b9600; break; | |
659 | case 19200: div_value = ftdi_sio_b19200; break; | |
660 | case 38400: div_value = ftdi_sio_b38400; break; | |
661 | case 57600: div_value = ftdi_sio_b57600; break; | |
662 | case 115200: div_value = ftdi_sio_b115200; break; | |
663 | } /* baud */ | |
664 | if (div_value == 0) { | |
5c09d144 | 665 | dbg("%s - Baudrate (%d) requested is not supported", __FUNCTION__, baud); |
1da177e4 | 666 | div_value = ftdi_sio_b9600; |
bd5e47cc | 667 | baud = 9600; |
1da177e4 LT |
668 | div_okay = 0; |
669 | } | |
670 | break; | |
671 | case FT8U232AM: /* 8U232AM chip */ | |
672 | if (baud <= 3000000) { | |
673 | div_value = ftdi_232am_baud_to_divisor(baud); | |
674 | } else { | |
675 | dbg("%s - Baud rate too high!", __FUNCTION__); | |
bd5e47cc | 676 | baud = 9600; |
1da177e4 LT |
677 | div_value = ftdi_232am_baud_to_divisor(9600); |
678 | div_okay = 0; | |
679 | } | |
680 | break; | |
681 | case FT232BM: /* FT232BM chip */ | |
682 | case FT2232C: /* FT2232C chip */ | |
3b009c63 | 683 | case FT232RL: |
1da177e4 LT |
684 | if (baud <= 3000000) { |
685 | div_value = ftdi_232bm_baud_to_divisor(baud); | |
686 | } else { | |
687 | dbg("%s - Baud rate too high!", __FUNCTION__); | |
688 | div_value = ftdi_232bm_baud_to_divisor(9600); | |
689 | div_okay = 0; | |
669a6db1 | 690 | baud = 9600; |
1da177e4 LT |
691 | } |
692 | break; | |
693 | } /* priv->chip_type */ | |
694 | ||
695 | if (div_okay) { | |
696 | dbg("%s - Baud rate set to %d (divisor 0x%lX) on chip %s", | |
697 | __FUNCTION__, baud, (unsigned long)div_value, | |
698 | ftdi_chip_name[priv->chip_type]); | |
699 | } | |
700 | ||
669a6db1 | 701 | tty_encode_baud_rate(port->tty, baud, baud); |
1da177e4 LT |
702 | return(div_value); |
703 | } | |
704 | ||
705 | ||
706 | static int get_serial_info(struct usb_serial_port * port, struct serial_struct __user * retinfo) | |
707 | { | |
708 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
709 | struct serial_struct tmp; | |
710 | ||
711 | if (!retinfo) | |
712 | return -EFAULT; | |
713 | memset(&tmp, 0, sizeof(tmp)); | |
714 | tmp.flags = priv->flags; | |
715 | tmp.baud_base = priv->baud_base; | |
716 | tmp.custom_divisor = priv->custom_divisor; | |
717 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
718 | return -EFAULT; | |
719 | return 0; | |
720 | } /* get_serial_info */ | |
721 | ||
722 | ||
723 | static int set_serial_info(struct usb_serial_port * port, struct serial_struct __user * newinfo) | |
724 | { /* set_serial_info */ | |
725 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
726 | struct serial_struct new_serial; | |
727 | struct ftdi_private old_priv; | |
728 | ||
729 | if (copy_from_user(&new_serial, newinfo, sizeof(new_serial))) | |
730 | return -EFAULT; | |
731 | old_priv = * priv; | |
732 | ||
733 | /* Do error checking and permission checking */ | |
734 | ||
735 | if (!capable(CAP_SYS_ADMIN)) { | |
736 | if (((new_serial.flags & ~ASYNC_USR_MASK) != | |
737 | (priv->flags & ~ASYNC_USR_MASK))) | |
738 | return -EPERM; | |
739 | priv->flags = ((priv->flags & ~ASYNC_USR_MASK) | | |
740 | (new_serial.flags & ASYNC_USR_MASK)); | |
741 | priv->custom_divisor = new_serial.custom_divisor; | |
742 | goto check_and_exit; | |
743 | } | |
744 | ||
745 | if ((new_serial.baud_base != priv->baud_base) && | |
746 | (new_serial.baud_base < 9600)) | |
747 | return -EINVAL; | |
748 | ||
749 | /* Make the changes - these are privileged changes! */ | |
750 | ||
751 | priv->flags = ((priv->flags & ~ASYNC_FLAGS) | | |
5c09d144 | 752 | (new_serial.flags & ASYNC_FLAGS)); |
1da177e4 LT |
753 | priv->custom_divisor = new_serial.custom_divisor; |
754 | ||
755 | port->tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0; | |
756 | ||
757 | check_and_exit: | |
758 | if ((old_priv.flags & ASYNC_SPD_MASK) != | |
759 | (priv->flags & ASYNC_SPD_MASK)) { | |
760 | if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) | |
761 | port->tty->alt_speed = 57600; | |
762 | else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
763 | port->tty->alt_speed = 115200; | |
764 | else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
765 | port->tty->alt_speed = 230400; | |
766 | else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
767 | port->tty->alt_speed = 460800; | |
768 | else | |
769 | port->tty->alt_speed = 0; | |
770 | } | |
771 | if (((old_priv.flags & ASYNC_SPD_MASK) != | |
772 | (priv->flags & ASYNC_SPD_MASK)) || | |
773 | (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) && | |
774 | (old_priv.custom_divisor != priv->custom_divisor))) { | |
775 | change_speed(port); | |
776 | } | |
5c09d144 | 777 | |
1da177e4 LT |
778 | return (0); |
779 | ||
780 | } /* set_serial_info */ | |
781 | ||
782 | ||
8f977e42 IA |
783 | /* Determine type of FTDI chip based on USB config and descriptor. */ |
784 | static void ftdi_determine_type(struct usb_serial_port *port) | |
785 | { | |
786 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
787 | struct usb_serial *serial = port->serial; | |
788 | struct usb_device *udev = serial->dev; | |
789 | unsigned version; | |
790 | unsigned interfaces; | |
791 | ||
792 | /* Assume it is not the original SIO device for now. */ | |
f5e09b7c | 793 | priv->baud_base = 48000000 / 2; |
8f977e42 IA |
794 | priv->write_offset = 0; |
795 | ||
796 | version = le16_to_cpu(udev->descriptor.bcdDevice); | |
797 | interfaces = udev->actconfig->desc.bNumInterfaces; | |
798 | dbg("%s: bcdDevice = 0x%x, bNumInterfaces = %u", __FUNCTION__, | |
799 | version, interfaces); | |
800 | if (interfaces > 1) { | |
801 | int inter; | |
802 | ||
803 | /* Multiple interfaces. Assume FT2232C. */ | |
804 | priv->chip_type = FT2232C; | |
805 | /* Determine interface code. */ | |
806 | inter = serial->interface->altsetting->desc.bInterfaceNumber; | |
807 | if (inter == 0) { | |
808 | priv->interface = PIT_SIOA; | |
809 | } else { | |
810 | priv->interface = PIT_SIOB; | |
811 | } | |
812 | /* BM-type devices have a bug where bcdDevice gets set | |
813 | * to 0x200 when iSerialNumber is 0. */ | |
814 | if (version < 0x500) { | |
815 | dbg("%s: something fishy - bcdDevice too low for multi-interface device", | |
816 | __FUNCTION__); | |
817 | } | |
818 | } else if (version < 0x200) { | |
819 | /* Old device. Assume its the original SIO. */ | |
820 | priv->chip_type = SIO; | |
821 | priv->baud_base = 12000000 / 16; | |
822 | priv->write_offset = 1; | |
823 | } else if (version < 0x400) { | |
824 | /* Assume its an FT8U232AM (or FT8U245AM) */ | |
825 | /* (It might be a BM because of the iSerialNumber bug, | |
826 | * but it will still work as an AM device.) */ | |
827 | priv->chip_type = FT8U232AM; | |
3b009c63 | 828 | } else if (version < 0x600) { |
8f977e42 IA |
829 | /* Assume its an FT232BM (or FT245BM) */ |
830 | priv->chip_type = FT232BM; | |
3b009c63 DB |
831 | } else { |
832 | /* Assume its an FT232R */ | |
833 | priv->chip_type = FT232RL; | |
8f977e42 IA |
834 | } |
835 | info("Detected %s", ftdi_chip_name[priv->chip_type]); | |
836 | } | |
837 | ||
838 | ||
1da177e4 LT |
839 | /* |
840 | * *************************************************************************** | |
841 | * Sysfs Attribute | |
842 | * *************************************************************************** | |
843 | */ | |
844 | ||
060b8845 | 845 | static ssize_t show_latency_timer(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
846 | { |
847 | struct usb_serial_port *port = to_usb_serial_port(dev); | |
848 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
12bdbe03 | 849 | struct usb_device *udev = port->serial->dev; |
1da177e4 LT |
850 | unsigned short latency = 0; |
851 | int rv = 0; | |
5c09d144 | 852 | |
5c09d144 | 853 | |
1da177e4 | 854 | dbg("%s",__FUNCTION__); |
5c09d144 | 855 | |
1da177e4 LT |
856 | rv = usb_control_msg(udev, |
857 | usb_rcvctrlpipe(udev, 0), | |
858 | FTDI_SIO_GET_LATENCY_TIMER_REQUEST, | |
859 | FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE, | |
5c09d144 | 860 | 0, priv->interface, |
1da177e4 | 861 | (char*) &latency, 1, WDR_TIMEOUT); |
5c09d144 | 862 | |
1da177e4 | 863 | if (rv < 0) { |
898eb71c | 864 | dev_err(dev, "Unable to read latency timer: %i\n", rv); |
1da177e4 LT |
865 | return -EIO; |
866 | } | |
867 | return sprintf(buf, "%i\n", latency); | |
868 | } | |
869 | ||
870 | /* Write a new value of the latency timer, in units of milliseconds. */ | |
060b8845 | 871 | static ssize_t store_latency_timer(struct device *dev, struct device_attribute *attr, const char *valbuf, |
1da177e4 LT |
872 | size_t count) |
873 | { | |
874 | struct usb_serial_port *port = to_usb_serial_port(dev); | |
875 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
12bdbe03 | 876 | struct usb_device *udev = port->serial->dev; |
1da177e4 LT |
877 | char buf[1]; |
878 | int v = simple_strtoul(valbuf, NULL, 10); | |
879 | int rv = 0; | |
5c09d144 | 880 | |
1da177e4 | 881 | dbg("%s: setting latency timer = %i", __FUNCTION__, v); |
5c09d144 | 882 | |
1da177e4 LT |
883 | rv = usb_control_msg(udev, |
884 | usb_sndctrlpipe(udev, 0), | |
885 | FTDI_SIO_SET_LATENCY_TIMER_REQUEST, | |
886 | FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE, | |
5c09d144 | 887 | v, priv->interface, |
1da177e4 | 888 | buf, 0, WDR_TIMEOUT); |
5c09d144 | 889 | |
1da177e4 | 890 | if (rv < 0) { |
898eb71c | 891 | dev_err(dev, "Unable to write latency timer: %i\n", rv); |
1da177e4 LT |
892 | return -EIO; |
893 | } | |
5c09d144 | 894 | |
1da177e4 LT |
895 | return count; |
896 | } | |
897 | ||
898 | /* Write an event character directly to the FTDI register. The ASCII | |
899 | value is in the low 8 bits, with the enable bit in the 9th bit. */ | |
060b8845 | 900 | static ssize_t store_event_char(struct device *dev, struct device_attribute *attr, const char *valbuf, |
1da177e4 LT |
901 | size_t count) |
902 | { | |
903 | struct usb_serial_port *port = to_usb_serial_port(dev); | |
904 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
12bdbe03 | 905 | struct usb_device *udev = port->serial->dev; |
1da177e4 LT |
906 | char buf[1]; |
907 | int v = simple_strtoul(valbuf, NULL, 10); | |
908 | int rv = 0; | |
5c09d144 | 909 | |
1da177e4 | 910 | dbg("%s: setting event char = %i", __FUNCTION__, v); |
5c09d144 | 911 | |
1da177e4 LT |
912 | rv = usb_control_msg(udev, |
913 | usb_sndctrlpipe(udev, 0), | |
914 | FTDI_SIO_SET_EVENT_CHAR_REQUEST, | |
915 | FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE, | |
5c09d144 | 916 | v, priv->interface, |
1da177e4 | 917 | buf, 0, WDR_TIMEOUT); |
5c09d144 | 918 | |
1da177e4 LT |
919 | if (rv < 0) { |
920 | dbg("Unable to write event character: %i", rv); | |
921 | return -EIO; | |
922 | } | |
5c09d144 | 923 | |
1da177e4 LT |
924 | return count; |
925 | } | |
926 | ||
927 | static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer, store_latency_timer); | |
928 | static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char); | |
929 | ||
12bdbe03 | 930 | static int create_sysfs_attrs(struct usb_serial_port *port) |
13f4db9e | 931 | { |
12bdbe03 | 932 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
13f4db9e | 933 | int retval = 0; |
1da177e4 LT |
934 | |
935 | dbg("%s",__FUNCTION__); | |
13f4db9e | 936 | |
1da177e4 LT |
937 | /* XXX I've no idea if the original SIO supports the event_char |
938 | * sysfs parameter, so I'm playing it safe. */ | |
939 | if (priv->chip_type != SIO) { | |
940 | dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]); | |
12bdbe03 | 941 | retval = device_create_file(&port->dev, &dev_attr_event_char); |
13f4db9e | 942 | if ((!retval) && |
97cd49eb SM |
943 | (priv->chip_type == FT232BM || |
944 | priv->chip_type == FT2232C || | |
945 | priv->chip_type == FT232RL)) { | |
12bdbe03 | 946 | retval = device_create_file(&port->dev, |
13f4db9e | 947 | &dev_attr_latency_timer); |
1da177e4 LT |
948 | } |
949 | } | |
13f4db9e | 950 | return retval; |
1da177e4 LT |
951 | } |
952 | ||
12bdbe03 | 953 | static void remove_sysfs_attrs(struct usb_serial_port *port) |
1da177e4 | 954 | { |
12bdbe03 | 955 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
1da177e4 | 956 | |
5c09d144 | 957 | dbg("%s",__FUNCTION__); |
1da177e4 | 958 | |
1da177e4 LT |
959 | /* XXX see create_sysfs_attrs */ |
960 | if (priv->chip_type != SIO) { | |
12bdbe03 | 961 | device_remove_file(&port->dev, &dev_attr_event_char); |
ed6e5282 AB |
962 | if (priv->chip_type == FT232BM || |
963 | priv->chip_type == FT2232C || | |
964 | priv->chip_type == FT232RL) { | |
12bdbe03 | 965 | device_remove_file(&port->dev, &dev_attr_latency_timer); |
1da177e4 LT |
966 | } |
967 | } | |
5c09d144 | 968 | |
1da177e4 LT |
969 | } |
970 | ||
971 | /* | |
972 | * *************************************************************************** | |
973 | * FTDI driver specific functions | |
974 | * *************************************************************************** | |
975 | */ | |
976 | ||
8f977e42 IA |
977 | /* Probe function to check for special devices */ |
978 | static int ftdi_sio_probe (struct usb_serial *serial, const struct usb_device_id *id) | |
979 | { | |
fa91d43b TL |
980 | struct ftdi_sio_quirk *quirk = (struct ftdi_sio_quirk *)id->driver_info; |
981 | ||
982 | if (quirk && quirk->probe) { | |
983 | int ret = quirk->probe(serial); | |
984 | if (ret != 0) | |
985 | return ret; | |
986 | } | |
987 | ||
8f977e42 IA |
988 | usb_set_serial_data(serial, (void *)id->driver_info); |
989 | ||
fa91d43b | 990 | return 0; |
8f977e42 IA |
991 | } |
992 | ||
12bdbe03 | 993 | static int ftdi_sio_port_probe(struct usb_serial_port *port) |
1da177e4 | 994 | { |
1da177e4 | 995 | struct ftdi_private *priv; |
0ffbbe25 ON |
996 | struct ftdi_sio_quirk *quirk = usb_get_serial_data(port->serial); |
997 | ||
13f4db9e | 998 | |
1da177e4 LT |
999 | dbg("%s",__FUNCTION__); |
1000 | ||
80b6ca48 | 1001 | priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL); |
1da177e4 LT |
1002 | if (!priv){ |
1003 | err("%s- kmalloc(%Zd) failed.", __FUNCTION__, sizeof(struct ftdi_private)); | |
1004 | return -ENOMEM; | |
1005 | } | |
1da177e4 LT |
1006 | |
1007 | spin_lock_init(&priv->rx_lock); | |
22465400 | 1008 | spin_lock_init(&priv->tx_lock); |
1da177e4 LT |
1009 | init_waitqueue_head(&priv->delta_msr_wait); |
1010 | /* This will push the characters through immediately rather | |
1011 | than queue a task to deliver them */ | |
1012 | priv->flags = ASYNC_LOW_LATENCY; | |
1013 | ||
0ffbbe25 ON |
1014 | if (quirk && quirk->port_probe) |
1015 | quirk->port_probe(priv); | |
1016 | ||
1da177e4 | 1017 | /* Increase the size of read buffers */ |
1bc3c9e1 | 1018 | kfree(port->bulk_in_buffer); |
1da177e4 LT |
1019 | port->bulk_in_buffer = kmalloc (BUFSZ, GFP_KERNEL); |
1020 | if (!port->bulk_in_buffer) { | |
1021 | kfree (priv); | |
1022 | return -ENOMEM; | |
1023 | } | |
1024 | if (port->read_urb) { | |
1025 | port->read_urb->transfer_buffer = port->bulk_in_buffer; | |
1026 | port->read_urb->transfer_buffer_length = BUFSZ; | |
1027 | } | |
1028 | ||
c4028958 DH |
1029 | INIT_DELAYED_WORK(&priv->rx_work, ftdi_process_read); |
1030 | priv->port = port; | |
76854cea | 1031 | |
1da177e4 LT |
1032 | /* Free port's existing write urb and transfer buffer. */ |
1033 | if (port->write_urb) { | |
1034 | usb_free_urb (port->write_urb); | |
1035 | port->write_urb = NULL; | |
1036 | } | |
1bc3c9e1 JJ |
1037 | kfree(port->bulk_out_buffer); |
1038 | port->bulk_out_buffer = NULL; | |
1da177e4 | 1039 | |
12bdbe03 | 1040 | usb_set_serial_port_data(port, priv); |
1da177e4 | 1041 | |
12bdbe03 JR |
1042 | ftdi_determine_type (port); |
1043 | create_sysfs_attrs(port); | |
1044 | return 0; | |
1045 | } | |
1da177e4 | 1046 | |
8f977e42 IA |
1047 | /* Setup for the USB-UIRT device, which requires hardwired |
1048 | * baudrate (38400 gets mapped to 312500) */ | |
1da177e4 | 1049 | /* Called from usbserial:serial_probe */ |
0ffbbe25 | 1050 | static void ftdi_USB_UIRT_setup (struct ftdi_private *priv) |
8f977e42 | 1051 | { |
1da177e4 | 1052 | dbg("%s",__FUNCTION__); |
1da177e4 | 1053 | |
1da177e4 LT |
1054 | priv->flags |= ASYNC_SPD_CUST; |
1055 | priv->custom_divisor = 77; | |
669a6db1 | 1056 | priv->force_baud = 38400; |
8f977e42 | 1057 | } /* ftdi_USB_UIRT_setup */ |
1da177e4 | 1058 | |
8f977e42 IA |
1059 | /* Setup for the HE-TIRA1 device, which requires hardwired |
1060 | * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */ | |
0ffbbe25 | 1061 | static void ftdi_HE_TIRA1_setup (struct ftdi_private *priv) |
8f977e42 | 1062 | { |
1da177e4 | 1063 | dbg("%s",__FUNCTION__); |
1da177e4 | 1064 | |
1da177e4 LT |
1065 | priv->flags |= ASYNC_SPD_CUST; |
1066 | priv->custom_divisor = 240; | |
669a6db1 | 1067 | priv->force_baud = 38400; |
1da177e4 | 1068 | priv->force_rtscts = 1; |
8f977e42 | 1069 | } /* ftdi_HE_TIRA1_setup */ |
1da177e4 | 1070 | |
fa91d43b | 1071 | /* |
20734345 HW |
1072 | * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko |
1073 | * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from | |
1074 | * userspace using openocd. | |
fa91d43b | 1075 | */ |
20734345 | 1076 | static int ftdi_jtag_probe(struct usb_serial *serial) |
fa91d43b TL |
1077 | { |
1078 | struct usb_device *udev = serial->dev; | |
1079 | struct usb_interface *interface = serial->interface; | |
1080 | ||
1081 | dbg("%s",__FUNCTION__); | |
1082 | ||
1083 | if (interface == udev->actconfig->interface[0]) { | |
20734345 | 1084 | info("Ignoring serial port reserved for JTAG"); |
fa91d43b TL |
1085 | return -ENODEV; |
1086 | } | |
1087 | ||
1088 | return 0; | |
1089 | } | |
1da177e4 | 1090 | |
5c09d144 | 1091 | /* ftdi_shutdown is called from usbserial:usb_serial_disconnect |
1da177e4 LT |
1092 | * it is called when the usb device is disconnected |
1093 | * | |
1094 | * usbserial:usb_serial_disconnect | |
1095 | * calls __serial_close for each open of the port | |
1096 | * shutdown is called then (ie ftdi_shutdown) | |
1097 | */ | |
1da177e4 | 1098 | static void ftdi_shutdown (struct usb_serial *serial) |
12bdbe03 JR |
1099 | { |
1100 | dbg("%s", __FUNCTION__); | |
1101 | } | |
5c09d144 | 1102 | |
12bdbe03 JR |
1103 | static int ftdi_sio_port_remove(struct usb_serial_port *port) |
1104 | { | |
1da177e4 LT |
1105 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
1106 | ||
1107 | dbg("%s", __FUNCTION__); | |
1108 | ||
12bdbe03 | 1109 | remove_sysfs_attrs(port); |
5c09d144 DB |
1110 | |
1111 | /* all open ports are closed at this point | |
1112 | * (by usbserial.c:__serial_close, which calls ftdi_close) | |
1da177e4 LT |
1113 | */ |
1114 | ||
1115 | if (priv) { | |
1116 | usb_set_serial_port_data(port, NULL); | |
1117 | kfree(priv); | |
1118 | } | |
1da177e4 | 1119 | |
12bdbe03 JR |
1120 | return 0; |
1121 | } | |
1da177e4 LT |
1122 | |
1123 | static int ftdi_open (struct usb_serial_port *port, struct file *filp) | |
1124 | { /* ftdi_open */ | |
1da177e4 LT |
1125 | struct usb_device *dev = port->serial->dev; |
1126 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
1127 | unsigned long flags; | |
5c09d144 | 1128 | |
1da177e4 LT |
1129 | int result = 0; |
1130 | char buf[1]; /* Needed for the usb_control_msg I think */ | |
1131 | ||
1132 | dbg("%s", __FUNCTION__); | |
1133 | ||
22465400 IA |
1134 | spin_lock_irqsave(&priv->tx_lock, flags); |
1135 | priv->tx_bytes = 0; | |
1136 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1137 | spin_lock_irqsave(&priv->rx_lock, flags); | |
1138 | priv->rx_bytes = 0; | |
1139 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
1140 | ||
57845bd1 GL |
1141 | if (port->tty) |
1142 | port->tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0; | |
1da177e4 LT |
1143 | |
1144 | /* No error checking for this (will get errors later anyway) */ | |
1145 | /* See ftdi_sio.h for description of what is reset */ | |
1146 | usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
5c09d144 DB |
1147 | FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE, |
1148 | FTDI_SIO_RESET_SIO, | |
1da177e4 LT |
1149 | priv->interface, buf, 0, WDR_TIMEOUT); |
1150 | ||
1151 | /* Termios defaults are set by usb_serial_init. We don't change | |
1152 | port->tty->termios - this would loose speed settings, etc. | |
1153 | This is same behaviour as serial.c/rs_open() - Kuba */ | |
1154 | ||
1155 | /* ftdi_set_termios will send usb control messages */ | |
57845bd1 | 1156 | if (port->tty) |
669a6db1 | 1157 | ftdi_set_termios(port, port->tty->termios); |
1da177e4 LT |
1158 | |
1159 | /* FIXME: Flow control might be enabled, so it should be checked - | |
1160 | we have no control of defaults! */ | |
1161 | /* Turn on RTS and DTR since we are not flow controlling by default */ | |
74ede0ff | 1162 | set_mctrl(port, TIOCM_DTR | TIOCM_RTS); |
1da177e4 LT |
1163 | |
1164 | /* Not throttled */ | |
1165 | spin_lock_irqsave(&priv->rx_lock, flags); | |
1166 | priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED); | |
1167 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
1168 | ||
1169 | /* Start reading from the device */ | |
76854cea | 1170 | priv->rx_processed = 0; |
1da177e4 LT |
1171 | usb_fill_bulk_urb(port->read_urb, dev, |
1172 | usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress), | |
1173 | port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length, | |
1174 | ftdi_read_bulk_callback, port); | |
1175 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
1176 | if (result) | |
1177 | err("%s - failed submitting read urb, error %d", __FUNCTION__, result); | |
1178 | ||
1179 | ||
1180 | return result; | |
1181 | } /* ftdi_open */ | |
1182 | ||
1183 | ||
1184 | ||
5c09d144 | 1185 | /* |
1da177e4 LT |
1186 | * usbserial:__serial_close only calls ftdi_close if the point is open |
1187 | * | |
1188 | * This only gets called when it is the last close | |
5c09d144 DB |
1189 | * |
1190 | * | |
1da177e4 LT |
1191 | */ |
1192 | ||
1193 | static void ftdi_close (struct usb_serial_port *port, struct file *filp) | |
1194 | { /* ftdi_close */ | |
1195 | unsigned int c_cflag = port->tty->termios->c_cflag; | |
1196 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
1197 | char buf[1]; | |
1198 | ||
1199 | dbg("%s", __FUNCTION__); | |
1200 | ||
95bef012 ON |
1201 | mutex_lock(&port->serial->disc_mutex); |
1202 | if (c_cflag & HUPCL && !port->serial->disconnected){ | |
1da177e4 | 1203 | /* Disable flow control */ |
5c09d144 | 1204 | if (usb_control_msg(port->serial->dev, |
1da177e4 LT |
1205 | usb_sndctrlpipe(port->serial->dev, 0), |
1206 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, | |
1207 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, | |
1208 | 0, priv->interface, buf, 0, | |
1209 | WDR_TIMEOUT) < 0) { | |
1210 | err("error from flowcontrol urb"); | |
5c09d144 | 1211 | } |
1da177e4 | 1212 | |
74ede0ff IA |
1213 | /* drop RTS and DTR */ |
1214 | clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); | |
1da177e4 | 1215 | } /* Note change no line if hupcl is off */ |
95bef012 | 1216 | mutex_unlock(&port->serial->disc_mutex); |
76854cea IA |
1217 | |
1218 | /* cancel any scheduled reading */ | |
1219 | cancel_delayed_work(&priv->rx_work); | |
1220 | flush_scheduled_work(); | |
5c09d144 | 1221 | |
1da177e4 | 1222 | /* shutdown our bulk read */ |
794c944e | 1223 | usb_kill_urb(port->read_urb); |
1da177e4 LT |
1224 | } /* ftdi_close */ |
1225 | ||
1226 | ||
5c09d144 | 1227 | |
1da177e4 LT |
1228 | /* The SIO requires the first byte to have: |
1229 | * B0 1 | |
1230 | * B1 0 | |
1231 | * B2..7 length of message excluding byte 0 | |
1232 | * | |
1233 | * The new devices do not require this byte | |
1234 | */ | |
1235 | static int ftdi_write (struct usb_serial_port *port, | |
1236 | const unsigned char *buf, int count) | |
1237 | { /* ftdi_write */ | |
1238 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
1239 | struct urb *urb; | |
1240 | unsigned char *buffer; | |
1241 | int data_offset ; /* will be 1 for the SIO and 0 otherwise */ | |
1242 | int status; | |
1243 | int transfer_size; | |
22465400 | 1244 | unsigned long flags; |
1da177e4 LT |
1245 | |
1246 | dbg("%s port %d, %d bytes", __FUNCTION__, port->number, count); | |
1247 | ||
1248 | if (count == 0) { | |
1249 | dbg("write request of 0 bytes"); | |
1250 | return 0; | |
1251 | } | |
22465400 IA |
1252 | spin_lock_irqsave(&priv->tx_lock, flags); |
1253 | if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) { | |
1254 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1255 | dbg("%s - write limit hit\n", __FUNCTION__); | |
1256 | return 0; | |
1257 | } | |
62127a58 | 1258 | priv->tx_outstanding_urbs++; |
22465400 | 1259 | spin_unlock_irqrestore(&priv->tx_lock, flags); |
5c09d144 | 1260 | |
1da177e4 LT |
1261 | data_offset = priv->write_offset; |
1262 | dbg("data_offset set to %d",data_offset); | |
1263 | ||
1264 | /* Determine total transfer size */ | |
1265 | transfer_size = count; | |
1266 | if (data_offset > 0) { | |
1267 | /* Original sio needs control bytes too... */ | |
1268 | transfer_size += (data_offset * | |
1269 | ((count + (PKTSZ - 1 - data_offset)) / | |
1270 | (PKTSZ - data_offset))); | |
1271 | } | |
1272 | ||
1273 | buffer = kmalloc (transfer_size, GFP_ATOMIC); | |
1274 | if (!buffer) { | |
1275 | err("%s ran out of kernel memory for urb ...", __FUNCTION__); | |
62127a58 ON |
1276 | count = -ENOMEM; |
1277 | goto error_no_buffer; | |
1da177e4 LT |
1278 | } |
1279 | ||
1280 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
1281 | if (!urb) { | |
1282 | err("%s - no more free urbs", __FUNCTION__); | |
62127a58 ON |
1283 | count = -ENOMEM; |
1284 | goto error_no_urb; | |
1da177e4 LT |
1285 | } |
1286 | ||
1287 | /* Copy data */ | |
1288 | if (data_offset > 0) { | |
1289 | /* Original sio requires control byte at start of each packet. */ | |
1290 | int user_pktsz = PKTSZ - data_offset; | |
1291 | int todo = count; | |
1292 | unsigned char *first_byte = buffer; | |
1293 | const unsigned char *current_position = buf; | |
1294 | ||
1295 | while (todo > 0) { | |
1296 | if (user_pktsz > todo) { | |
1297 | user_pktsz = todo; | |
1298 | } | |
1299 | /* Write the control byte at the front of the packet*/ | |
5c09d144 | 1300 | *first_byte = 1 | ((user_pktsz) << 2); |
1da177e4 LT |
1301 | /* Copy data for packet */ |
1302 | memcpy (first_byte + data_offset, | |
1303 | current_position, user_pktsz); | |
1304 | first_byte += user_pktsz + data_offset; | |
1305 | current_position += user_pktsz; | |
1306 | todo -= user_pktsz; | |
1307 | } | |
1308 | } else { | |
1309 | /* No control byte required. */ | |
1310 | /* Copy in the data to send */ | |
1311 | memcpy (buffer, buf, count); | |
1312 | } | |
1313 | ||
1314 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, transfer_size, buffer); | |
1315 | ||
1316 | /* fill the buffer and send it */ | |
5c09d144 | 1317 | usb_fill_bulk_urb(urb, port->serial->dev, |
1da177e4 LT |
1318 | usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), |
1319 | buffer, transfer_size, | |
1320 | ftdi_write_bulk_callback, port); | |
1321 | ||
1322 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1323 | if (status) { | |
1324 | err("%s - failed submitting write urb, error %d", __FUNCTION__, status); | |
1325 | count = status; | |
62127a58 | 1326 | goto error; |
22465400 IA |
1327 | } else { |
1328 | spin_lock_irqsave(&priv->tx_lock, flags); | |
22465400 IA |
1329 | priv->tx_outstanding_bytes += count; |
1330 | priv->tx_bytes += count; | |
1331 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1da177e4 LT |
1332 | } |
1333 | ||
1334 | /* we are done with this urb, so let the host driver | |
1335 | * really free it when it is finished with it */ | |
62127a58 | 1336 | usb_free_urb(urb); |
1da177e4 LT |
1337 | |
1338 | dbg("%s write returning: %d", __FUNCTION__, count); | |
1339 | return count; | |
62127a58 ON |
1340 | error: |
1341 | usb_free_urb(urb); | |
1342 | error_no_urb: | |
1343 | kfree (buffer); | |
1344 | error_no_buffer: | |
1345 | spin_lock_irqsave(&priv->tx_lock, flags); | |
1346 | priv->tx_outstanding_urbs--; | |
1347 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1348 | return count; | |
1da177e4 LT |
1349 | } /* ftdi_write */ |
1350 | ||
1351 | ||
1352 | /* This function may get called when the device is closed */ | |
1353 | ||
7d12e780 | 1354 | static void ftdi_write_bulk_callback (struct urb *urb) |
1da177e4 | 1355 | { |
22465400 | 1356 | unsigned long flags; |
1da177e4 | 1357 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; |
22465400 IA |
1358 | struct ftdi_private *priv; |
1359 | int data_offset; /* will be 1 for the SIO and 0 otherwise */ | |
1360 | unsigned long countback; | |
0fb0aa18 | 1361 | int status = urb->status; |
1da177e4 LT |
1362 | |
1363 | /* free up the transfer buffer, as usb_free_urb() does not do this */ | |
1364 | kfree (urb->transfer_buffer); | |
1365 | ||
1366 | dbg("%s - port %d", __FUNCTION__, port->number); | |
5c09d144 | 1367 | |
0fb0aa18 GKH |
1368 | if (status) { |
1369 | dbg("nonzero write bulk status received: %d", status); | |
1da177e4 LT |
1370 | return; |
1371 | } | |
1372 | ||
22465400 IA |
1373 | priv = usb_get_serial_port_data(port); |
1374 | if (!priv) { | |
1375 | dbg("%s - bad port private data pointer - exiting", __FUNCTION__); | |
1376 | return; | |
1377 | } | |
1378 | /* account for transferred data */ | |
1379 | countback = urb->actual_length; | |
1380 | data_offset = priv->write_offset; | |
1381 | if (data_offset > 0) { | |
1382 | /* Subtract the control bytes */ | |
1383 | countback -= (data_offset * ((countback + (PKTSZ - 1)) / PKTSZ)); | |
1384 | } | |
1385 | spin_lock_irqsave(&priv->tx_lock, flags); | |
1386 | --priv->tx_outstanding_urbs; | |
1387 | priv->tx_outstanding_bytes -= countback; | |
1388 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1389 | ||
cf2c7481 | 1390 | usb_serial_port_softint(port); |
1da177e4 LT |
1391 | } /* ftdi_write_bulk_callback */ |
1392 | ||
1393 | ||
1394 | static int ftdi_write_room( struct usb_serial_port *port ) | |
1395 | { | |
22465400 IA |
1396 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
1397 | int room; | |
1398 | unsigned long flags; | |
1399 | ||
1da177e4 LT |
1400 | dbg("%s - port %d", __FUNCTION__, port->number); |
1401 | ||
22465400 IA |
1402 | spin_lock_irqsave(&priv->tx_lock, flags); |
1403 | if (priv->tx_outstanding_urbs < URB_UPPER_LIMIT) { | |
1404 | /* | |
1405 | * We really can take anything the user throws at us | |
1406 | * but let's pick a nice big number to tell the tty | |
1407 | * layer that we have lots of free space | |
1408 | */ | |
1409 | room = 2048; | |
1410 | } else { | |
1411 | room = 0; | |
1412 | } | |
1413 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1414 | return room; | |
1da177e4 LT |
1415 | } /* ftdi_write_room */ |
1416 | ||
1417 | ||
1418 | static int ftdi_chars_in_buffer (struct usb_serial_port *port) | |
1419 | { /* ftdi_chars_in_buffer */ | |
22465400 IA |
1420 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
1421 | int buffered; | |
1422 | unsigned long flags; | |
1423 | ||
1da177e4 LT |
1424 | dbg("%s - port %d", __FUNCTION__, port->number); |
1425 | ||
22465400 IA |
1426 | spin_lock_irqsave(&priv->tx_lock, flags); |
1427 | buffered = (int)priv->tx_outstanding_bytes; | |
1428 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1429 | if (buffered < 0) { | |
1430 | err("%s outstanding tx bytes is negative!", __FUNCTION__); | |
1431 | buffered = 0; | |
1432 | } | |
1433 | return buffered; | |
1da177e4 LT |
1434 | } /* ftdi_chars_in_buffer */ |
1435 | ||
1436 | ||
1437 | ||
7d12e780 | 1438 | static void ftdi_read_bulk_callback (struct urb *urb) |
1da177e4 LT |
1439 | { /* ftdi_read_bulk_callback */ |
1440 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; | |
1441 | struct tty_struct *tty; | |
1442 | struct ftdi_private *priv; | |
22465400 IA |
1443 | unsigned long countread; |
1444 | unsigned long flags; | |
0fb0aa18 | 1445 | int status = urb->status; |
1da177e4 LT |
1446 | |
1447 | if (urb->number_of_packets > 0) { | |
1448 | err("%s transfer_buffer_length %d actual_length %d number of packets %d",__FUNCTION__, | |
1449 | urb->transfer_buffer_length, urb->actual_length, urb->number_of_packets ); | |
1450 | err("%s transfer_flags %x ", __FUNCTION__,urb->transfer_flags ); | |
1451 | } | |
1452 | ||
1453 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1454 | ||
1455 | if (port->open_count <= 0) | |
1456 | return; | |
1457 | ||
1458 | tty = port->tty; | |
1459 | if (!tty) { | |
1460 | dbg("%s - bad tty pointer - exiting",__FUNCTION__); | |
1461 | return; | |
1462 | } | |
1463 | ||
1464 | priv = usb_get_serial_port_data(port); | |
1465 | if (!priv) { | |
1466 | dbg("%s - bad port private data pointer - exiting", __FUNCTION__); | |
1467 | return; | |
1468 | } | |
1469 | ||
1470 | if (urb != port->read_urb) { | |
1471 | err("%s - Not my urb!", __FUNCTION__); | |
1472 | } | |
1473 | ||
0fb0aa18 | 1474 | if (status) { |
1da177e4 | 1475 | /* This will happen at close every time so it is a dbg not an err */ |
0fb0aa18 GKH |
1476 | dbg("(this is ok on close) nonzero read bulk status received: " |
1477 | "%d", status); | |
1da177e4 LT |
1478 | return; |
1479 | } | |
1480 | ||
22465400 IA |
1481 | /* count data bytes, but not status bytes */ |
1482 | countread = urb->actual_length; | |
1483 | countread -= 2 * ((countread + (PKTSZ - 1)) / PKTSZ); | |
1484 | spin_lock_irqsave(&priv->rx_lock, flags); | |
1485 | priv->rx_bytes += countread; | |
1486 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
1487 | ||
c4028958 | 1488 | ftdi_process_read(&priv->rx_work.work); |
1da177e4 LT |
1489 | |
1490 | } /* ftdi_read_bulk_callback */ | |
1491 | ||
1492 | ||
c4028958 | 1493 | static void ftdi_process_read (struct work_struct *work) |
1da177e4 | 1494 | { /* ftdi_process_read */ |
c4028958 DH |
1495 | struct ftdi_private *priv = |
1496 | container_of(work, struct ftdi_private, rx_work.work); | |
1497 | struct usb_serial_port *port = priv->port; | |
1da177e4 LT |
1498 | struct urb *urb; |
1499 | struct tty_struct *tty; | |
1da177e4 | 1500 | char error_flag; |
5c09d144 | 1501 | unsigned char *data; |
1da177e4 LT |
1502 | |
1503 | int i; | |
1504 | int result; | |
1505 | int need_flip; | |
1506 | int packet_offset; | |
76854cea | 1507 | unsigned long flags; |
1da177e4 LT |
1508 | |
1509 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1510 | ||
1511 | if (port->open_count <= 0) | |
1512 | return; | |
1513 | ||
1514 | tty = port->tty; | |
1515 | if (!tty) { | |
1516 | dbg("%s - bad tty pointer - exiting",__FUNCTION__); | |
1517 | return; | |
1518 | } | |
1519 | ||
1520 | priv = usb_get_serial_port_data(port); | |
1521 | if (!priv) { | |
1522 | dbg("%s - bad port private data pointer - exiting", __FUNCTION__); | |
1523 | return; | |
1524 | } | |
1525 | ||
1526 | urb = port->read_urb; | |
1527 | if (!urb) { | |
1528 | dbg("%s - bad read_urb pointer - exiting", __FUNCTION__); | |
1529 | return; | |
1530 | } | |
1531 | ||
1532 | data = urb->transfer_buffer; | |
1533 | ||
76854cea IA |
1534 | if (priv->rx_processed) { |
1535 | dbg("%s - already processed: %d bytes, %d remain", __FUNCTION__, | |
1536 | priv->rx_processed, | |
1537 | urb->actual_length - priv->rx_processed); | |
1da177e4 | 1538 | } else { |
76854cea IA |
1539 | /* The first two bytes of every read packet are status */ |
1540 | if (urb->actual_length > 2) { | |
1541 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data); | |
1542 | } else { | |
1543 | dbg("Status only: %03oo %03oo",data[0],data[1]); | |
1544 | } | |
1545 | } | |
1da177e4 LT |
1546 | |
1547 | ||
1548 | /* TO DO -- check for hung up line and handle appropriately: */ | |
1549 | /* send hangup */ | |
1550 | /* See acm.c - you do a tty_hangup - eg tty_hangup(tty) */ | |
1551 | /* if CD is dropped and the line is not CLOCAL then we should hangup */ | |
1552 | ||
1553 | need_flip = 0; | |
76854cea IA |
1554 | for (packet_offset = priv->rx_processed; packet_offset < urb->actual_length; packet_offset += PKTSZ) { |
1555 | int length; | |
1556 | ||
1da177e4 | 1557 | /* Compare new line status to the old one, signal if different */ |
76854cea IA |
1558 | /* N.B. packet may be processed more than once, but differences |
1559 | * are only processed once. */ | |
1da177e4 LT |
1560 | if (priv != NULL) { |
1561 | char new_status = data[packet_offset+0] & FTDI_STATUS_B0_MASK; | |
1562 | if (new_status != priv->prev_status) { | |
1563 | priv->diff_status |= new_status ^ priv->prev_status; | |
1564 | wake_up_interruptible(&priv->delta_msr_wait); | |
1565 | priv->prev_status = new_status; | |
1566 | } | |
1567 | } | |
1568 | ||
76854cea IA |
1569 | length = min(PKTSZ, urb->actual_length-packet_offset)-2; |
1570 | if (length < 0) { | |
1571 | err("%s - bad packet length: %d", __FUNCTION__, length+2); | |
1572 | length = 0; | |
1573 | } | |
1574 | ||
76854cea IA |
1575 | if (priv->rx_flags & THROTTLED) { |
1576 | dbg("%s - throttled", __FUNCTION__); | |
1577 | break; | |
1578 | } | |
33f0f88f | 1579 | if (tty_buffer_request_room(tty, length) < length) { |
76854cea IA |
1580 | /* break out & wait for throttling/unthrottling to happen */ |
1581 | dbg("%s - receive room low", __FUNCTION__); | |
1582 | break; | |
1583 | } | |
1584 | ||
1da177e4 LT |
1585 | /* Handle errors and break */ |
1586 | error_flag = TTY_NORMAL; | |
1587 | /* Although the device uses a bitmask and hence can have multiple */ | |
1588 | /* errors on a packet - the order here sets the priority the */ | |
1589 | /* error is returned to the tty layer */ | |
1590 | ||
1591 | if ( data[packet_offset+1] & FTDI_RS_OE ) { | |
1592 | error_flag = TTY_OVERRUN; | |
1593 | dbg("OVERRRUN error"); | |
1594 | } | |
1595 | if ( data[packet_offset+1] & FTDI_RS_BI ) { | |
1596 | error_flag = TTY_BREAK; | |
1597 | dbg("BREAK received"); | |
1598 | } | |
1599 | if ( data[packet_offset+1] & FTDI_RS_PE ) { | |
1600 | error_flag = TTY_PARITY; | |
1601 | dbg("PARITY error"); | |
1602 | } | |
1603 | if ( data[packet_offset+1] & FTDI_RS_FE ) { | |
1604 | error_flag = TTY_FRAME; | |
1605 | dbg("FRAMING error"); | |
1606 | } | |
76854cea IA |
1607 | if (length > 0) { |
1608 | for (i = 2; i < length+2; i++) { | |
5c09d144 | 1609 | /* Note that the error flag is duplicated for |
1da177e4 LT |
1610 | every character received since we don't know |
1611 | which character it applied to */ | |
1612 | tty_insert_flip_char(tty, data[packet_offset+i], error_flag); | |
1613 | } | |
1614 | need_flip = 1; | |
1615 | } | |
1616 | ||
1617 | #ifdef NOT_CORRECT_BUT_KEEPING_IT_FOR_NOW | |
1618 | /* if a parity error is detected you get status packets forever | |
1619 | until a character is sent without a parity error. | |
1620 | This doesn't work well since the application receives a never | |
1621 | ending stream of bad data - even though new data hasn't been sent. | |
1622 | Therefore I (bill) have taken this out. | |
5c09d144 | 1623 | However - this might make sense for framing errors and so on |
1da177e4 LT |
1624 | so I am leaving the code in for now. |
1625 | */ | |
1626 | else { | |
1627 | if (error_flag != TTY_NORMAL){ | |
1628 | dbg("error_flag is not normal"); | |
1629 | /* In this case it is just status - if that is an error send a bad character */ | |
1630 | if(tty->flip.count >= TTY_FLIPBUF_SIZE) { | |
1631 | tty_flip_buffer_push(tty); | |
1632 | } | |
1633 | tty_insert_flip_char(tty, 0xff, error_flag); | |
1634 | need_flip = 1; | |
1635 | } | |
1636 | } | |
1637 | #endif | |
1638 | } /* "for(packet_offset=0..." */ | |
1639 | ||
1640 | /* Low latency */ | |
1641 | if (need_flip) { | |
1642 | tty_flip_buffer_push(tty); | |
1643 | } | |
1644 | ||
76854cea IA |
1645 | if (packet_offset < urb->actual_length) { |
1646 | /* not completely processed - record progress */ | |
1647 | priv->rx_processed = packet_offset; | |
1648 | dbg("%s - incomplete, %d bytes processed, %d remain", | |
1649 | __FUNCTION__, packet_offset, | |
1650 | urb->actual_length - packet_offset); | |
1651 | /* check if we were throttled while processing */ | |
1652 | spin_lock_irqsave(&priv->rx_lock, flags); | |
1653 | if (priv->rx_flags & THROTTLED) { | |
1654 | priv->rx_flags |= ACTUALLY_THROTTLED; | |
1655 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
1656 | dbg("%s - deferring remainder until unthrottled", | |
1657 | __FUNCTION__); | |
1658 | return; | |
1659 | } | |
1660 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
1661 | /* if the port is closed stop trying to read */ | |
1662 | if (port->open_count > 0){ | |
1663 | /* delay processing of remainder */ | |
1664 | schedule_delayed_work(&priv->rx_work, 1); | |
1665 | } else { | |
1666 | dbg("%s - port is closed", __FUNCTION__); | |
1667 | } | |
1668 | return; | |
1669 | } | |
1670 | ||
1671 | /* urb is completely processed */ | |
1672 | priv->rx_processed = 0; | |
1673 | ||
1da177e4 LT |
1674 | /* if the port is closed stop trying to read */ |
1675 | if (port->open_count > 0){ | |
1676 | /* Continue trying to always read */ | |
5c09d144 | 1677 | usb_fill_bulk_urb(port->read_urb, port->serial->dev, |
1da177e4 LT |
1678 | usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress), |
1679 | port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length, | |
1680 | ftdi_read_bulk_callback, port); | |
1681 | ||
1682 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
1683 | if (result) | |
1684 | err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); | |
1685 | } | |
1686 | ||
1687 | return; | |
1688 | } /* ftdi_process_read */ | |
1689 | ||
1690 | ||
1691 | static void ftdi_break_ctl( struct usb_serial_port *port, int break_state ) | |
1692 | { | |
1693 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
5c09d144 | 1694 | __u16 urb_value = 0; |
1da177e4 | 1695 | char buf[1]; |
5c09d144 | 1696 | |
1da177e4 LT |
1697 | /* break_state = -1 to turn on break, and 0 to turn off break */ |
1698 | /* see drivers/char/tty_io.c to see it used */ | |
1699 | /* last_set_data_urb_value NEVER has the break bit set in it */ | |
1700 | ||
1701 | if (break_state) { | |
1702 | urb_value = priv->last_set_data_urb_value | FTDI_SIO_SET_BREAK; | |
1703 | } else { | |
5c09d144 | 1704 | urb_value = priv->last_set_data_urb_value; |
1da177e4 LT |
1705 | } |
1706 | ||
5c09d144 | 1707 | |
1da177e4 | 1708 | if (usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0), |
5c09d144 | 1709 | FTDI_SIO_SET_DATA_REQUEST, |
1da177e4 LT |
1710 | FTDI_SIO_SET_DATA_REQUEST_TYPE, |
1711 | urb_value , priv->interface, | |
1712 | buf, 0, WDR_TIMEOUT) < 0) { | |
1713 | err("%s FAILED to enable/disable break state (state was %d)", __FUNCTION__,break_state); | |
5c09d144 | 1714 | } |
1da177e4 LT |
1715 | |
1716 | dbg("%s break state is %d - urb is %d", __FUNCTION__,break_state, urb_value); | |
5c09d144 | 1717 | |
1da177e4 LT |
1718 | } |
1719 | ||
1720 | ||
1721 | /* old_termios contains the original termios settings and tty->termios contains | |
1722 | * the new setting to be used | |
1723 | * WARNING: set_termios calls this with old_termios in kernel space | |
1724 | */ | |
1725 | ||
606d099c | 1726 | static void ftdi_set_termios (struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 LT |
1727 | { /* ftdi_termios */ |
1728 | struct usb_device *dev = port->serial->dev; | |
1da177e4 | 1729 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
669a6db1 AC |
1730 | struct ktermios *termios = port->tty->termios; |
1731 | unsigned int cflag = termios->c_cflag; | |
1da177e4 LT |
1732 | __u16 urb_value; /* will hold the new flags */ |
1733 | char buf[1]; /* Perhaps I should dynamically alloc this? */ | |
5c09d144 | 1734 | |
1da177e4 | 1735 | // Added for xon/xoff support |
669a6db1 | 1736 | unsigned int iflag = termios->c_iflag; |
1da177e4 LT |
1737 | unsigned char vstop; |
1738 | unsigned char vstart; | |
5c09d144 | 1739 | |
1da177e4 LT |
1740 | dbg("%s", __FUNCTION__); |
1741 | ||
1742 | /* Force baud rate if this device requires it, unless it is set to B0. */ | |
669a6db1 | 1743 | if (priv->force_baud && ((termios->c_cflag & CBAUD) != B0)) { |
1da177e4 | 1744 | dbg("%s: forcing baud rate for this device", __FUNCTION__); |
bd5e47cc AM |
1745 | tty_encode_baud_rate(port->tty, priv->force_baud, |
1746 | priv->force_baud); | |
1da177e4 LT |
1747 | } |
1748 | ||
1749 | /* Force RTS-CTS if this device requires it. */ | |
1750 | if (priv->force_rtscts) { | |
1751 | dbg("%s: forcing rtscts for this device", __FUNCTION__); | |
669a6db1 | 1752 | termios->c_cflag |= CRTSCTS; |
1da177e4 LT |
1753 | } |
1754 | ||
669a6db1 | 1755 | cflag = termios->c_cflag; |
1da177e4 | 1756 | |
5c09d144 DB |
1757 | /* FIXME -For this cut I don't care if the line is really changing or |
1758 | not - so just do the change regardless - should be able to | |
1da177e4 | 1759 | compare old_termios and tty->termios */ |
5c09d144 DB |
1760 | /* NOTE These routines can get interrupted by |
1761 | ftdi_sio_read_bulk_callback - need to examine what this | |
1da177e4 | 1762 | means - don't see any problems yet */ |
5c09d144 | 1763 | |
1da177e4 | 1764 | /* Set number of data bits, parity, stop bits */ |
5c09d144 | 1765 | |
669a6db1 AC |
1766 | termios->c_cflag &= ~CMSPAR; |
1767 | ||
1da177e4 LT |
1768 | urb_value = 0; |
1769 | urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 : | |
1770 | FTDI_SIO_SET_DATA_STOP_BITS_1); | |
5c09d144 DB |
1771 | urb_value |= (cflag & PARENB ? |
1772 | (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD : | |
1da177e4 LT |
1773 | FTDI_SIO_SET_DATA_PARITY_EVEN) : |
1774 | FTDI_SIO_SET_DATA_PARITY_NONE); | |
1775 | if (cflag & CSIZE) { | |
1776 | switch (cflag & CSIZE) { | |
1777 | case CS5: urb_value |= 5; dbg("Setting CS5"); break; | |
1778 | case CS6: urb_value |= 6; dbg("Setting CS6"); break; | |
1779 | case CS7: urb_value |= 7; dbg("Setting CS7"); break; | |
1780 | case CS8: urb_value |= 8; dbg("Setting CS8"); break; | |
1781 | default: | |
1782 | err("CSIZE was set but not CS5-CS8"); | |
1783 | } | |
1784 | } | |
1785 | ||
1786 | /* This is needed by the break command since it uses the same command - but is | |
1787 | * or'ed with this value */ | |
1788 | priv->last_set_data_urb_value = urb_value; | |
5c09d144 | 1789 | |
1da177e4 | 1790 | if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
5c09d144 | 1791 | FTDI_SIO_SET_DATA_REQUEST, |
1da177e4 LT |
1792 | FTDI_SIO_SET_DATA_REQUEST_TYPE, |
1793 | urb_value , priv->interface, | |
279e1545 | 1794 | buf, 0, WDR_SHORT_TIMEOUT) < 0) { |
1da177e4 | 1795 | err("%s FAILED to set databits/stopbits/parity", __FUNCTION__); |
5c09d144 | 1796 | } |
1da177e4 LT |
1797 | |
1798 | /* Now do the baudrate */ | |
1799 | if ((cflag & CBAUD) == B0 ) { | |
1800 | /* Disable flow control */ | |
1801 | if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
5c09d144 | 1802 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, |
1da177e4 | 1803 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, |
5c09d144 | 1804 | 0, priv->interface, |
1da177e4 LT |
1805 | buf, 0, WDR_TIMEOUT) < 0) { |
1806 | err("%s error from disable flowcontrol urb", __FUNCTION__); | |
5c09d144 | 1807 | } |
1da177e4 | 1808 | /* Drop RTS and DTR */ |
74ede0ff | 1809 | clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); |
1da177e4 LT |
1810 | } else { |
1811 | /* set the baudrate determined before */ | |
1812 | if (change_speed(port)) { | |
72a755fc PF |
1813 | err("%s urb failed to set baudrate", __FUNCTION__); |
1814 | } | |
1815 | /* Ensure RTS and DTR are raised when baudrate changed from 0 */ | |
57845bd1 | 1816 | if (!old_termios || (old_termios->c_cflag & CBAUD) == B0) { |
72a755fc | 1817 | set_mctrl(port, TIOCM_DTR | TIOCM_RTS); |
1da177e4 | 1818 | } |
1da177e4 LT |
1819 | } |
1820 | ||
1821 | /* Set flow control */ | |
1822 | /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */ | |
1823 | if (cflag & CRTSCTS) { | |
1824 | dbg("%s Setting to CRTSCTS flow control", __FUNCTION__); | |
5c09d144 | 1825 | if (usb_control_msg(dev, |
1da177e4 | 1826 | usb_sndctrlpipe(dev, 0), |
5c09d144 | 1827 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, |
1da177e4 LT |
1828 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, |
1829 | 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface), | |
1830 | buf, 0, WDR_TIMEOUT) < 0) { | |
1831 | err("urb failed to set to rts/cts flow control"); | |
5c09d144 DB |
1832 | } |
1833 | ||
1834 | } else { | |
1da177e4 LT |
1835 | /* |
1836 | * Xon/Xoff code | |
1837 | * | |
1838 | * Check the IXOFF status in the iflag component of the termios structure | |
1839 | * if IXOFF is not set, the pre-xon/xoff code is executed. | |
1840 | */ | |
1841 | if (iflag & IXOFF) { | |
1842 | dbg("%s request to enable xonxoff iflag=%04x",__FUNCTION__,iflag); | |
1843 | // Try to enable the XON/XOFF on the ftdi_sio | |
1844 | // Set the vstart and vstop -- could have been done up above where | |
1845 | // a lot of other dereferencing is done but that would be very | |
1846 | // inefficient as vstart and vstop are not always needed | |
669a6db1 AC |
1847 | vstart = termios->c_cc[VSTART]; |
1848 | vstop = termios->c_cc[VSTOP]; | |
1da177e4 LT |
1849 | urb_value=(vstop << 8) | (vstart); |
1850 | ||
1851 | if (usb_control_msg(dev, | |
1852 | usb_sndctrlpipe(dev, 0), | |
1853 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, | |
1854 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, | |
1855 | urb_value , (FTDI_SIO_XON_XOFF_HS | |
1856 | | priv->interface), | |
1857 | buf, 0, WDR_TIMEOUT) < 0) { | |
1858 | err("urb failed to set to xon/xoff flow control"); | |
1859 | } | |
1860 | } else { | |
1861 | /* else clause to only run if cfag ! CRTSCTS and iflag ! XOFF */ | |
1862 | /* CHECKME Assuming XON/XOFF handled by tty stack - not by device */ | |
1863 | dbg("%s Turning off hardware flow control", __FUNCTION__); | |
5c09d144 | 1864 | if (usb_control_msg(dev, |
1da177e4 | 1865 | usb_sndctrlpipe(dev, 0), |
5c09d144 | 1866 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, |
1da177e4 | 1867 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, |
5c09d144 | 1868 | 0, priv->interface, |
1da177e4 LT |
1869 | buf, 0, WDR_TIMEOUT) < 0) { |
1870 | err("urb failed to clear flow control"); | |
5c09d144 | 1871 | } |
1da177e4 | 1872 | } |
5c09d144 | 1873 | |
1da177e4 LT |
1874 | } |
1875 | return; | |
1876 | } /* ftdi_termios */ | |
1877 | ||
1878 | ||
1879 | static int ftdi_tiocmget (struct usb_serial_port *port, struct file *file) | |
1880 | { | |
1881 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
1882 | unsigned char buf[2]; | |
1883 | int ret; | |
1884 | ||
1885 | dbg("%s TIOCMGET", __FUNCTION__); | |
1886 | switch (priv->chip_type) { | |
1887 | case SIO: | |
1888 | /* Request the status from the device */ | |
5c09d144 | 1889 | if ((ret = usb_control_msg(port->serial->dev, |
1da177e4 | 1890 | usb_rcvctrlpipe(port->serial->dev, 0), |
5c09d144 | 1891 | FTDI_SIO_GET_MODEM_STATUS_REQUEST, |
1da177e4 | 1892 | FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE, |
5c09d144 | 1893 | 0, 0, |
1da177e4 LT |
1894 | buf, 1, WDR_TIMEOUT)) < 0 ) { |
1895 | err("%s Could not get modem status of device - err: %d", __FUNCTION__, | |
1896 | ret); | |
1897 | return(ret); | |
1898 | } | |
1899 | break; | |
1900 | case FT8U232AM: | |
1901 | case FT232BM: | |
1902 | case FT2232C: | |
ed6e5282 | 1903 | case FT232RL: |
1da177e4 LT |
1904 | /* the 8U232AM returns a two byte value (the sio is a 1 byte value) - in the same |
1905 | format as the data returned from the in point */ | |
5c09d144 | 1906 | if ((ret = usb_control_msg(port->serial->dev, |
1da177e4 | 1907 | usb_rcvctrlpipe(port->serial->dev, 0), |
5c09d144 | 1908 | FTDI_SIO_GET_MODEM_STATUS_REQUEST, |
1da177e4 | 1909 | FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE, |
5c09d144 | 1910 | 0, priv->interface, |
1da177e4 LT |
1911 | buf, 2, WDR_TIMEOUT)) < 0 ) { |
1912 | err("%s Could not get modem status of device - err: %d", __FUNCTION__, | |
1913 | ret); | |
1914 | return(ret); | |
1915 | } | |
1916 | break; | |
1917 | default: | |
1918 | return -EFAULT; | |
1919 | break; | |
1920 | } | |
5c09d144 | 1921 | |
1da177e4 LT |
1922 | return (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) | |
1923 | (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) | | |
1924 | (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) | | |
1925 | (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0) | | |
5c09d144 | 1926 | priv->last_dtr_rts; |
1da177e4 LT |
1927 | } |
1928 | ||
1929 | static int ftdi_tiocmset(struct usb_serial_port *port, struct file * file, unsigned int set, unsigned int clear) | |
1930 | { | |
1da177e4 | 1931 | dbg("%s TIOCMSET", __FUNCTION__); |
74ede0ff | 1932 | return update_mctrl(port, set, clear); |
1da177e4 LT |
1933 | } |
1934 | ||
1935 | ||
1936 | static int ftdi_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) | |
1937 | { | |
1938 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
1939 | ||
1da177e4 LT |
1940 | dbg("%s cmd 0x%04x", __FUNCTION__, cmd); |
1941 | ||
1942 | /* Based on code from acm.c and others */ | |
1943 | switch (cmd) { | |
1944 | ||
1da177e4 LT |
1945 | case TIOCGSERIAL: /* gets serial port data */ |
1946 | return get_serial_info(port, (struct serial_struct __user *) arg); | |
1947 | ||
1948 | case TIOCSSERIAL: /* sets serial port data */ | |
1949 | return set_serial_info(port, (struct serial_struct __user *) arg); | |
1950 | ||
1951 | /* | |
1952 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
1953 | * - mask passed in arg for lines of interest | |
1954 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
1955 | * Caller should use TIOCGICOUNT to see which one it was. | |
1956 | * | |
1957 | * This code is borrowed from linux/drivers/char/serial.c | |
1958 | */ | |
1959 | case TIOCMIWAIT: | |
1960 | while (priv != NULL) { | |
1961 | interruptible_sleep_on(&priv->delta_msr_wait); | |
1962 | /* see if a signal did it */ | |
1963 | if (signal_pending(current)) | |
1964 | return -ERESTARTSYS; | |
1965 | else { | |
1966 | char diff = priv->diff_status; | |
1967 | ||
1968 | if (diff == 0) { | |
1969 | return -EIO; /* no change => error */ | |
1970 | } | |
1971 | ||
1972 | /* Consume all events */ | |
1973 | priv->diff_status = 0; | |
1974 | ||
1975 | /* Return 0 if caller wanted to know about these bits */ | |
1976 | if ( ((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) || | |
1977 | ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) || | |
1978 | ((arg & TIOCM_CD) && (diff & FTDI_RS0_RLSD)) || | |
1979 | ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS)) ) { | |
1980 | return 0; | |
1981 | } | |
1982 | /* | |
1983 | * Otherwise caller can't care less about what happened, | |
1984 | * and so we continue to wait for more events. | |
1985 | */ | |
1986 | } | |
1987 | } | |
1988 | return(0); | |
1989 | break; | |
1990 | default: | |
1991 | break; | |
5c09d144 | 1992 | |
1da177e4 LT |
1993 | } |
1994 | ||
1995 | ||
5c09d144 | 1996 | /* This is not necessarily an error - turns out the higher layers will do |
1da177e4 LT |
1997 | * some ioctls itself (see comment above) |
1998 | */ | |
1999 | dbg("%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h", __FUNCTION__, cmd); | |
2000 | ||
2001 | return(-ENOIOCTLCMD); | |
2002 | } /* ftdi_ioctl */ | |
2003 | ||
2004 | ||
2005 | static void ftdi_throttle (struct usb_serial_port *port) | |
2006 | { | |
2007 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
2008 | unsigned long flags; | |
2009 | ||
2010 | dbg("%s - port %d", __FUNCTION__, port->number); | |
2011 | ||
2012 | spin_lock_irqsave(&priv->rx_lock, flags); | |
2013 | priv->rx_flags |= THROTTLED; | |
2014 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
2015 | } | |
2016 | ||
2017 | ||
2018 | static void ftdi_unthrottle (struct usb_serial_port *port) | |
2019 | { | |
2020 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
2021 | int actually_throttled; | |
2022 | unsigned long flags; | |
2023 | ||
2024 | dbg("%s - port %d", __FUNCTION__, port->number); | |
2025 | ||
2026 | spin_lock_irqsave(&priv->rx_lock, flags); | |
2027 | actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED; | |
2028 | priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED); | |
2029 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
2030 | ||
2031 | if (actually_throttled) | |
c4028958 | 2032 | schedule_delayed_work(&priv->rx_work, 0); |
1da177e4 LT |
2033 | } |
2034 | ||
2035 | static int __init ftdi_init (void) | |
2036 | { | |
2037 | int retval; | |
2038 | ||
2039 | dbg("%s", __FUNCTION__); | |
fdcb0a0f IA |
2040 | if (vendor > 0 && product > 0) { |
2041 | /* Add user specified VID/PID to reserved element of table. */ | |
2042 | int i; | |
2043 | for (i = 0; id_table_combined[i].idVendor; i++) | |
2044 | ; | |
2045 | id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
2046 | id_table_combined[i].idVendor = vendor; | |
2047 | id_table_combined[i].idProduct = product; | |
2048 | } | |
8f977e42 | 2049 | retval = usb_serial_register(&ftdi_sio_device); |
1da177e4 | 2050 | if (retval) |
8f977e42 | 2051 | goto failed_sio_register; |
1da177e4 | 2052 | retval = usb_register(&ftdi_driver); |
5c09d144 | 2053 | if (retval) |
1da177e4 LT |
2054 | goto failed_usb_register; |
2055 | ||
2056 | info(DRIVER_VERSION ":" DRIVER_DESC); | |
2057 | return 0; | |
2058 | failed_usb_register: | |
8f977e42 IA |
2059 | usb_serial_deregister(&ftdi_sio_device); |
2060 | failed_sio_register: | |
1da177e4 LT |
2061 | return retval; |
2062 | } | |
2063 | ||
2064 | ||
2065 | static void __exit ftdi_exit (void) | |
2066 | { | |
2067 | ||
2068 | dbg("%s", __FUNCTION__); | |
2069 | ||
2070 | usb_deregister (&ftdi_driver); | |
8f977e42 | 2071 | usb_serial_deregister (&ftdi_sio_device); |
1da177e4 LT |
2072 | |
2073 | } | |
2074 | ||
2075 | ||
2076 | module_init(ftdi_init); | |
2077 | module_exit(ftdi_exit); | |
2078 | ||
2079 | MODULE_AUTHOR( DRIVER_AUTHOR ); | |
2080 | MODULE_DESCRIPTION( DRIVER_DESC ); | |
2081 | MODULE_LICENSE("GPL"); | |
2082 | ||
2083 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
2084 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
fdcb0a0f IA |
2085 | module_param(vendor, ushort, 0); |
2086 | MODULE_PARM_DESC(vendor, "User specified vendor ID (default=" | |
2087 | __MODULE_STRING(FTDI_VID)")"); | |
2088 | module_param(product, ushort, 0); | |
2089 | MODULE_PARM_DESC(vendor, "User specified product ID"); | |
1da177e4 | 2090 |