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Commit | Line | Data |
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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); |
546d7eec | 95 | static int ftdi_mtxorb_hack_setup (struct usb_serial *serial); |
0ffbbe25 ON |
96 | static void ftdi_USB_UIRT_setup (struct ftdi_private *priv); |
97 | static void ftdi_HE_TIRA1_setup (struct ftdi_private *priv); | |
8f977e42 | 98 | |
20734345 HW |
99 | static struct ftdi_sio_quirk ftdi_jtag_quirk = { |
100 | .probe = ftdi_jtag_probe, | |
fa91d43b TL |
101 | }; |
102 | ||
546d7eec KV |
103 | static struct ftdi_sio_quirk ftdi_mtxorb_hack_quirk = { |
104 | .probe = ftdi_mtxorb_hack_setup, | |
105 | }; | |
106 | ||
8f977e42 | 107 | static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = { |
0ffbbe25 | 108 | .port_probe = ftdi_USB_UIRT_setup, |
8f977e42 IA |
109 | }; |
110 | ||
111 | static struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = { | |
0ffbbe25 | 112 | .port_probe = ftdi_HE_TIRA1_setup, |
1da177e4 LT |
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. | |
8f977e42 IA |
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] | |
1da177e4 LT |
129 | */ |
130 | ||
131 | ||
1da177e4 LT |
132 | |
133 | static struct usb_device_id id_table_combined [] = { | |
2011e924 JD |
134 | { USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) }, |
135 | { USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) }, | |
72a9f958 | 136 | { USB_DEVICE(FTDI_VID, FTDI_ACTZWAVE_PID) }, |
1da177e4 | 137 | { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) }, |
69737dfa | 138 | { USB_DEVICE(FTDI_VID, FTDI_IPLUS_PID) }, |
d099321b | 139 | { USB_DEVICE(FTDI_VID, FTDI_IPLUS2_PID) }, |
fad14a0d | 140 | { USB_DEVICE(FTDI_VID, FTDI_DMX4ALL) }, |
1da177e4 LT |
141 | { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) }, |
142 | { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) }, | |
143 | { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) }, | |
d8b21606 | 144 | { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) }, |
1da177e4 | 145 | { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) }, |
c0f8d561 | 146 | { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) }, |
1da177e4 | 147 | { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) }, |
2adb80e9 | 148 | { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) }, |
1da177e4 LT |
149 | { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) }, |
150 | { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) }, | |
151 | { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) }, | |
152 | { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) }, | |
153 | { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) }, | |
154 | { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) }, | |
155 | { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) }, | |
156 | { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) }, | |
157 | { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) }, | |
158 | { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) }, | |
159 | { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) }, | |
160 | { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) }, | |
161 | { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) }, | |
8f977e42 IA |
162 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) }, |
163 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) }, | |
164 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) }, | |
165 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) }, | |
166 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) }, | |
167 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) }, | |
168 | { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) }, | |
546d7eec KV |
169 | { USB_DEVICE(MTXORB_VK_VID, MTXORB_VK_PID), |
170 | .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk }, | |
8f977e42 | 171 | { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) }, |
1da177e4 | 172 | { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) }, |
274a4bbc | 173 | { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) }, |
868e440d | 174 | { USB_DEVICE(FTDI_VID, FTDI_USBX_707_PID) }, |
1da177e4 LT |
175 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) }, |
176 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) }, | |
177 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) }, | |
178 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) }, | |
a1484827 | 179 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2106_PID) }, |
1da177e4 LT |
180 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) }, |
181 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) }, | |
182 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) }, | |
183 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) }, | |
184 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) }, | |
185 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) }, | |
186 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) }, | |
187 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) }, | |
188 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) }, | |
189 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) }, | |
190 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) }, | |
191 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) }, | |
192 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) }, | |
193 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) }, | |
194 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) }, | |
195 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) }, | |
196 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) }, | |
197 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) }, | |
198 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) }, | |
199 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) }, | |
200 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) }, | |
201 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) }, | |
202 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) }, | |
203 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) }, | |
204 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) }, | |
205 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) }, | |
206 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) }, | |
207 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) }, | |
208 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) }, | |
209 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) }, | |
210 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) }, | |
211 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) }, | |
212 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) }, | |
213 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) }, | |
214 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) }, | |
215 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) }, | |
216 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) }, | |
217 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) }, | |
218 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) }, | |
219 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) }, | |
220 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) }, | |
221 | { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) }, | |
222 | { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) }, | |
223 | { USB_DEVICE(OCT_VID, OCT_US101_PID) }, | |
8f977e42 IA |
224 | { USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID), |
225 | .driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk }, | |
226 | { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID), | |
227 | .driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk }, | |
1da177e4 LT |
228 | { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) }, |
229 | { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) }, | |
230 | { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) }, | |
231 | { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) }, | |
8f977e42 IA |
232 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) }, |
233 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) }, | |
234 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) }, | |
235 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) }, | |
236 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) }, | |
237 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) }, | |
238 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) }, | |
239 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) }, | |
240 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) }, | |
241 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) }, | |
242 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) }, | |
243 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) }, | |
244 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) }, | |
245 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) }, | |
246 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) }, | |
247 | { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) }, | |
1da177e4 | 248 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) }, |
47900743 | 249 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) }, |
e6ac4a40 IA |
250 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) }, |
251 | { USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) }, | |
207c47e1 | 252 | { USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) }, |
bde62185 | 253 | { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) }, |
4eaf60e0 TS |
254 | { USB_DEVICE(FTDI_VID, FTDI_IBS_US485_PID) }, |
255 | { USB_DEVICE(FTDI_VID, FTDI_IBS_PICPRO_PID) }, | |
256 | { USB_DEVICE(FTDI_VID, FTDI_IBS_PCMCIA_PID) }, | |
257 | { USB_DEVICE(FTDI_VID, FTDI_IBS_PK1_PID) }, | |
258 | { USB_DEVICE(FTDI_VID, FTDI_IBS_RS232MON_PID) }, | |
259 | { USB_DEVICE(FTDI_VID, FTDI_IBS_APP70_PID) }, | |
260 | { USB_DEVICE(FTDI_VID, FTDI_IBS_PEDO_PID) }, | |
261 | { USB_DEVICE(FTDI_VID, FTDI_IBS_PROD_PID) }, | |
e6ac4a40 | 262 | /* |
42f8aa94 PS |
263 | * Due to many user requests for multiple ELV devices we enable |
264 | * them by default. | |
e6ac4a40 | 265 | */ |
42f8aa94 PS |
266 | { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) }, |
267 | { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) }, | |
268 | { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) }, | |
269 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) }, | |
270 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) }, | |
271 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) }, | |
272 | { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) }, | |
273 | { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) }, | |
274 | { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) }, | |
275 | { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) }, | |
276 | { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) }, | |
277 | { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) }, | |
278 | { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) }, | |
279 | { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) }, | |
280 | { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) }, | |
281 | { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) }, | |
282 | { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) }, | |
283 | { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) }, | |
4ae897df | 284 | { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1010PC_PID) }, |
42f8aa94 | 285 | { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) }, |
5c09d144 DB |
286 | { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) }, |
287 | { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) }, | |
288 | { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) }, | |
289 | { USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) }, | |
290 | { USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) }, | |
291 | { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) }, | |
292 | { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) }, | |
ec434e9b | 293 | { USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) }, |
1da177e4 LT |
294 | { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) }, |
295 | { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) }, | |
296 | { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) }, | |
297 | { USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) }, | |
e6ac4a40 | 298 | { USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) }, |
1da177e4 | 299 | { USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) }, |
ef31fec0 | 300 | { USB_DEVICE(TTI_VID, TTI_QL355P_PID) }, |
6f92872c | 301 | { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) }, |
1da177e4 LT |
302 | { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) }, |
303 | { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) }, | |
304 | { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) }, | |
305 | { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) }, | |
6f92872c IA |
306 | { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) }, |
307 | { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) }, | |
e6ac4a40 IA |
308 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) }, |
309 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) }, | |
310 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) }, | |
311 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) }, | |
312 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) }, | |
313 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) }, | |
314 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) }, | |
315 | { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) }, | |
6f92872c | 316 | { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) }, |
8f977e42 | 317 | { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) }, |
34d1a8aa IA |
318 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) }, |
319 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_YS_PID) }, | |
9b1513d9 IA |
320 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) }, |
321 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) }, | |
34d1a8aa IA |
322 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_IC_PID) }, |
323 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_DB9_PID) }, | |
324 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_RS232_PID) }, | |
325 | { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y9_PID) }, | |
740a4282 IA |
326 | { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) }, |
327 | { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) }, | |
9b1513d9 | 328 | { USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) }, |
c1f8ea7d SH |
329 | { USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) }, |
330 | { USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) }, | |
c9c7746d RS |
331 | { USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) }, |
332 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) }, | |
09c280a2 | 333 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) }, |
c9c7746d | 334 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) }, |
09c280a2 | 335 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HRC_PID) }, |
34910434 | 336 | { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16IC_PID) }, |
b4723ae3 IA |
337 | { USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) }, |
338 | { USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) }, | |
effac8be | 339 | { USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) }, |
641adaae | 340 | { USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) }, |
7e1c0b86 | 341 | { USB_DEVICE(FTDI_VID, FTDI_ECLO_COM_1WIRE_PID) }, |
a94b52ac IA |
342 | { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) }, |
343 | { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) }, | |
ce40d290 | 344 | { USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) }, |
cdd3b156 | 345 | { USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) }, |
7e0258fd | 346 | { USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) }, |
bf58fbd5 | 347 | { USB_DEVICE(ICOM_ID1_VID, ICOM_ID1_PID) }, |
62a13db3 | 348 | { USB_DEVICE(PAPOUCH_VID, PAPOUCH_TMU_PID) }, |
20a0f47e | 349 | { USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) }, |
eb79b4fd | 350 | { USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) }, |
48437486 | 351 | { USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) }, |
e1979fef | 352 | { USB_DEVICE(TESTO_VID, TESTO_USB_INTERFACE_PID) }, |
eaede2cb | 353 | { USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) }, |
9978f9e1 IA |
354 | { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) }, |
355 | { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) }, | |
356 | { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) }, | |
40c36092 | 357 | { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) }, |
822c7ef4 | 358 | { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) }, |
762e92fa | 359 | { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) }, |
d7fde2d6 | 360 | { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) }, |
4bb0ef19 | 361 | { USB_DEVICE(FTDI_VID, FTDI_ELSTER_UNICOM_PID) }, |
11171d1b | 362 | { USB_DEVICE(FTDI_VID, FTDI_PROPOX_JTAGCABLEII_PID) }, |
fa91d43b | 363 | { USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID), |
20734345 HW |
364 | .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, |
365 | { USB_DEVICE(FIC_VID, FIC_NEO1973_DEBUG_PID), | |
366 | .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, | |
367 | { USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID), | |
368 | .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, | |
fdcb0a0f IA |
369 | { }, /* Optional parameter entry */ |
370 | { } /* Terminating entry */ | |
1da177e4 LT |
371 | }; |
372 | ||
373 | MODULE_DEVICE_TABLE (usb, id_table_combined); | |
374 | ||
375 | static struct usb_driver ftdi_driver = { | |
376 | .name = "ftdi_sio", | |
377 | .probe = usb_serial_probe, | |
378 | .disconnect = usb_serial_disconnect, | |
379 | .id_table = id_table_combined, | |
5c09d144 | 380 | .no_dynamic_id = 1, |
1da177e4 LT |
381 | }; |
382 | ||
4c4c9432 | 383 | static const char *ftdi_chip_name[] = { |
1da177e4 LT |
384 | [SIO] = "SIO", /* the serial part of FT8U100AX */ |
385 | [FT8U232AM] = "FT8U232AM", | |
386 | [FT232BM] = "FT232BM", | |
387 | [FT2232C] = "FT2232C", | |
d8b21606 | 388 | [FT232RL] = "FT232RL", |
1da177e4 LT |
389 | }; |
390 | ||
391 | ||
392 | /* Constants for read urb and write urb */ | |
393 | #define BUFSZ 512 | |
394 | #define PKTSZ 64 | |
395 | ||
396 | /* rx_flags */ | |
397 | #define THROTTLED 0x01 | |
398 | #define ACTUALLY_THROTTLED 0x02 | |
399 | ||
1da177e4 LT |
400 | /* Used for TIOCMIWAIT */ |
401 | #define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD) | |
402 | #define FTDI_STATUS_B1_MASK (FTDI_RS_BI) | |
403 | /* End TIOCMIWAIT */ | |
404 | ||
bbc5d276 RK |
405 | #define FTDI_IMPL_ASYNC_FLAGS = (ASYNC_SPD_HI | ASYNC_SPD_VHI \ |
406 | | ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP) | |
1da177e4 LT |
407 | |
408 | /* function prototypes for a FTDI serial converter */ | |
8f977e42 | 409 | static int ftdi_sio_probe (struct usb_serial *serial, const struct usb_device_id *id); |
1da177e4 | 410 | static void ftdi_shutdown (struct usb_serial *serial); |
12bdbe03 JR |
411 | static int ftdi_sio_port_probe (struct usb_serial_port *port); |
412 | static int ftdi_sio_port_remove (struct usb_serial_port *port); | |
1da177e4 LT |
413 | static int ftdi_open (struct usb_serial_port *port, struct file *filp); |
414 | static void ftdi_close (struct usb_serial_port *port, struct file *filp); | |
415 | static int ftdi_write (struct usb_serial_port *port, const unsigned char *buf, int count); | |
416 | static int ftdi_write_room (struct usb_serial_port *port); | |
417 | static int ftdi_chars_in_buffer (struct usb_serial_port *port); | |
7d12e780 DH |
418 | static void ftdi_write_bulk_callback (struct urb *urb); |
419 | static void ftdi_read_bulk_callback (struct urb *urb); | |
c4028958 | 420 | static void ftdi_process_read (struct work_struct *work); |
606d099c | 421 | static void ftdi_set_termios (struct usb_serial_port *port, struct ktermios * old); |
1da177e4 LT |
422 | static int ftdi_tiocmget (struct usb_serial_port *port, struct file *file); |
423 | static int ftdi_tiocmset (struct usb_serial_port *port, struct file * file, unsigned int set, unsigned int clear); | |
424 | static int ftdi_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg); | |
425 | static void ftdi_break_ctl (struct usb_serial_port *port, int break_state ); | |
426 | static void ftdi_throttle (struct usb_serial_port *port); | |
427 | static void ftdi_unthrottle (struct usb_serial_port *port); | |
428 | ||
429 | static unsigned short int ftdi_232am_baud_base_to_divisor (int baud, int base); | |
430 | static unsigned short int ftdi_232am_baud_to_divisor (int baud); | |
431 | static __u32 ftdi_232bm_baud_base_to_divisor (int baud, int base); | |
432 | static __u32 ftdi_232bm_baud_to_divisor (int baud); | |
433 | ||
ea65370d | 434 | static struct usb_serial_driver ftdi_sio_device = { |
18fcac35 GKH |
435 | .driver = { |
436 | .owner = THIS_MODULE, | |
269bda1c | 437 | .name = "ftdi_sio", |
18fcac35 | 438 | }, |
269bda1c | 439 | .description = "FTDI USB Serial Device", |
d9b1b787 | 440 | .usb_driver = &ftdi_driver , |
8f977e42 | 441 | .id_table = id_table_combined, |
1da177e4 | 442 | .num_ports = 1, |
8f977e42 | 443 | .probe = ftdi_sio_probe, |
12bdbe03 JR |
444 | .port_probe = ftdi_sio_port_probe, |
445 | .port_remove = ftdi_sio_port_remove, | |
1da177e4 LT |
446 | .open = ftdi_open, |
447 | .close = ftdi_close, | |
448 | .throttle = ftdi_throttle, | |
449 | .unthrottle = ftdi_unthrottle, | |
450 | .write = ftdi_write, | |
451 | .write_room = ftdi_write_room, | |
452 | .chars_in_buffer = ftdi_chars_in_buffer, | |
453 | .read_bulk_callback = ftdi_read_bulk_callback, | |
454 | .write_bulk_callback = ftdi_write_bulk_callback, | |
455 | .tiocmget = ftdi_tiocmget, | |
456 | .tiocmset = ftdi_tiocmset, | |
457 | .ioctl = ftdi_ioctl, | |
458 | .set_termios = ftdi_set_termios, | |
459 | .break_ctl = ftdi_break_ctl, | |
1da177e4 LT |
460 | .shutdown = ftdi_shutdown, |
461 | }; | |
462 | ||
1da177e4 LT |
463 | |
464 | #define WDR_TIMEOUT 5000 /* default urb timeout */ | |
279e1545 | 465 | #define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */ |
1da177e4 LT |
466 | |
467 | /* High and low are for DTR, RTS etc etc */ | |
468 | #define HIGH 1 | |
469 | #define LOW 0 | |
470 | ||
22465400 IA |
471 | /* number of outstanding urbs to prevent userspace DoS from happening */ |
472 | #define URB_UPPER_LIMIT 42 | |
473 | ||
1da177e4 LT |
474 | /* |
475 | * *************************************************************************** | |
fa91d43b | 476 | * Utility functions |
1da177e4 LT |
477 | * *************************************************************************** |
478 | */ | |
479 | ||
480 | static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base) | |
481 | { | |
482 | unsigned short int divisor; | |
483 | int divisor3 = base / 2 / baud; // divisor shifted 3 bits to the left | |
484 | if ((divisor3 & 0x7) == 7) divisor3 ++; // round x.7/8 up to x+1 | |
485 | divisor = divisor3 >> 3; | |
486 | divisor3 &= 0x7; | |
487 | if (divisor3 == 1) divisor |= 0xc000; else // 0.125 | |
488 | if (divisor3 >= 4) divisor |= 0x4000; else // 0.5 | |
489 | if (divisor3 != 0) divisor |= 0x8000; // 0.25 | |
490 | if (divisor == 1) divisor = 0; /* special case for maximum baud rate */ | |
491 | return divisor; | |
492 | } | |
493 | ||
494 | static unsigned short int ftdi_232am_baud_to_divisor(int baud) | |
495 | { | |
496 | return(ftdi_232am_baud_base_to_divisor(baud, 48000000)); | |
497 | } | |
498 | ||
499 | static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base) | |
500 | { | |
501 | static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 }; | |
502 | __u32 divisor; | |
503 | int divisor3 = base / 2 / baud; // divisor shifted 3 bits to the left | |
504 | divisor = divisor3 >> 3; | |
505 | divisor |= (__u32)divfrac[divisor3 & 0x7] << 14; | |
506 | /* Deal with special cases for highest baud rates. */ | |
507 | if (divisor == 1) divisor = 0; else // 1.0 | |
508 | if (divisor == 0x4001) divisor = 1; // 1.5 | |
509 | return divisor; | |
510 | } | |
511 | ||
512 | static __u32 ftdi_232bm_baud_to_divisor(int baud) | |
513 | { | |
514 | return(ftdi_232bm_baud_base_to_divisor(baud, 48000000)); | |
515 | } | |
516 | ||
74ede0ff IA |
517 | #define set_mctrl(port, set) update_mctrl((port), (set), 0) |
518 | #define clear_mctrl(port, clear) update_mctrl((port), 0, (clear)) | |
519 | ||
520 | static int update_mctrl(struct usb_serial_port *port, unsigned int set, unsigned int clear) | |
1da177e4 LT |
521 | { |
522 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
523 | char *buf; | |
74ede0ff | 524 | unsigned urb_value; |
1da177e4 | 525 | int rv; |
1da177e4 | 526 | |
74ede0ff | 527 | if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) { |
441b62c1 | 528 | dbg("%s - DTR|RTS not being set|cleared", __func__); |
74ede0ff IA |
529 | return 0; /* no change */ |
530 | } | |
1da177e4 | 531 | |
1da177e4 | 532 | buf = kmalloc(1, GFP_NOIO); |
9b0f2582 | 533 | if (!buf) |
1da177e4 | 534 | return -ENOMEM; |
74ede0ff IA |
535 | |
536 | clear &= ~set; /* 'set' takes precedence over 'clear' */ | |
537 | urb_value = 0; | |
538 | if (clear & TIOCM_DTR) | |
539 | urb_value |= FTDI_SIO_SET_DTR_LOW; | |
540 | if (clear & TIOCM_RTS) | |
541 | urb_value |= FTDI_SIO_SET_RTS_LOW; | |
542 | if (set & TIOCM_DTR) | |
543 | urb_value |= FTDI_SIO_SET_DTR_HIGH; | |
544 | if (set & TIOCM_RTS) | |
545 | urb_value |= FTDI_SIO_SET_RTS_HIGH; | |
1da177e4 LT |
546 | rv = usb_control_msg(port->serial->dev, |
547 | usb_sndctrlpipe(port->serial->dev, 0), | |
5c09d144 | 548 | FTDI_SIO_SET_MODEM_CTRL_REQUEST, |
1da177e4 | 549 | FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE, |
74ede0ff | 550 | urb_value, priv->interface, |
1da177e4 LT |
551 | buf, 0, WDR_TIMEOUT); |
552 | ||
553 | kfree(buf); | |
74ede0ff IA |
554 | if (rv < 0) { |
555 | err("%s Error from MODEM_CTRL urb: DTR %s, RTS %s", | |
441b62c1 | 556 | __func__, |
74ede0ff IA |
557 | (set & TIOCM_DTR) ? "HIGH" : |
558 | (clear & TIOCM_DTR) ? "LOW" : "unchanged", | |
559 | (set & TIOCM_RTS) ? "HIGH" : | |
560 | (clear & TIOCM_RTS) ? "LOW" : "unchanged"); | |
561 | } else { | |
441b62c1 | 562 | dbg("%s - DTR %s, RTS %s", __func__, |
74ede0ff IA |
563 | (set & TIOCM_DTR) ? "HIGH" : |
564 | (clear & TIOCM_DTR) ? "LOW" : "unchanged", | |
565 | (set & TIOCM_RTS) ? "HIGH" : | |
566 | (clear & TIOCM_RTS) ? "LOW" : "unchanged"); | |
9b0f2582 | 567 | /* FIXME: locking on last_dtr_rts */ |
74ede0ff IA |
568 | priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set; |
569 | } | |
1da177e4 LT |
570 | return rv; |
571 | } | |
572 | ||
573 | ||
574 | static __u32 get_ftdi_divisor(struct usb_serial_port * port); | |
575 | ||
576 | ||
577 | static int change_speed(struct usb_serial_port *port) | |
578 | { | |
579 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
580 | char *buf; | |
581 | __u16 urb_value; | |
582 | __u16 urb_index; | |
583 | __u32 urb_index_value; | |
584 | int rv; | |
585 | ||
586 | buf = kmalloc(1, GFP_NOIO); | |
587 | if (!buf) | |
588 | return -ENOMEM; | |
589 | ||
590 | urb_index_value = get_ftdi_divisor(port); | |
591 | urb_value = (__u16)urb_index_value; | |
592 | urb_index = (__u16)(urb_index_value >> 16); | |
593 | if (priv->interface) { /* FT2232C */ | |
594 | urb_index = (__u16)((urb_index << 8) | priv->interface); | |
595 | } | |
5c09d144 | 596 | |
1da177e4 LT |
597 | rv = usb_control_msg(port->serial->dev, |
598 | usb_sndctrlpipe(port->serial->dev, 0), | |
599 | FTDI_SIO_SET_BAUDRATE_REQUEST, | |
600 | FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE, | |
601 | urb_value, urb_index, | |
279e1545 | 602 | buf, 0, WDR_SHORT_TIMEOUT); |
1da177e4 LT |
603 | |
604 | kfree(buf); | |
605 | return rv; | |
606 | } | |
607 | ||
608 | ||
609 | static __u32 get_ftdi_divisor(struct usb_serial_port * port) | |
610 | { /* get_ftdi_divisor */ | |
611 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
612 | __u32 div_value = 0; | |
613 | int div_okay = 1; | |
614 | int baud; | |
615 | ||
616 | /* | |
617 | * The logic involved in setting the baudrate can be cleanly split in 3 steps. | |
618 | * Obtaining the actual baud rate is a little tricky since unix traditionally | |
619 | * somehow ignored the possibility to set non-standard baud rates. | |
620 | * 1. Standard baud rates are set in tty->termios->c_cflag | |
621 | * 2. If these are not enough, you can set any speed using alt_speed as follows: | |
622 | * - set tty->termios->c_cflag speed to B38400 | |
623 | * - set your real speed in tty->alt_speed; it gets ignored when | |
624 | * alt_speed==0, (or) | |
625 | * - call TIOCSSERIAL ioctl with (struct serial_struct) set as follows: | |
626 | * flags & ASYNC_SPD_MASK == ASYNC_SPD_[HI, VHI, SHI, WARP], this just | |
627 | * sets alt_speed to (HI: 57600, VHI: 115200, SHI: 230400, WARP: 460800) | |
628 | * ** Steps 1, 2 are done courtesy of tty_get_baud_rate | |
629 | * 3. You can also set baud rate by setting custom divisor as follows | |
630 | * - set tty->termios->c_cflag speed to B38400 | |
631 | * - call TIOCSSERIAL ioctl with (struct serial_struct) set as follows: | |
632 | * o flags & ASYNC_SPD_MASK == ASYNC_SPD_CUST | |
633 | * o custom_divisor set to baud_base / your_new_baudrate | |
634 | * ** Step 3 is done courtesy of code borrowed from serial.c - I should really | |
635 | * spend some time and separate+move this common code to serial.c, it is | |
636 | * replicated in nearly every serial driver you see. | |
637 | */ | |
638 | ||
639 | /* 1. Get the baud rate from the tty settings, this observes alt_speed hack */ | |
640 | ||
641 | baud = tty_get_baud_rate(port->tty); | |
441b62c1 | 642 | dbg("%s - tty_get_baud_rate reports speed %d", __func__, baud); |
1da177e4 LT |
643 | |
644 | /* 2. Observe async-compatible custom_divisor hack, update baudrate if needed */ | |
645 | ||
646 | if (baud == 38400 && | |
647 | ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) && | |
648 | (priv->custom_divisor)) { | |
649 | baud = priv->baud_base / priv->custom_divisor; | |
441b62c1 | 650 | dbg("%s - custom divisor %d sets baud rate to %d", __func__, priv->custom_divisor, baud); |
1da177e4 LT |
651 | } |
652 | ||
653 | /* 3. Convert baudrate to device-specific divisor */ | |
654 | ||
5c09d144 | 655 | if (!baud) baud = 9600; |
1da177e4 LT |
656 | switch(priv->chip_type) { |
657 | case SIO: /* SIO chip */ | |
658 | switch(baud) { | |
659 | case 300: div_value = ftdi_sio_b300; break; | |
660 | case 600: div_value = ftdi_sio_b600; break; | |
661 | case 1200: div_value = ftdi_sio_b1200; break; | |
662 | case 2400: div_value = ftdi_sio_b2400; break; | |
663 | case 4800: div_value = ftdi_sio_b4800; break; | |
664 | case 9600: div_value = ftdi_sio_b9600; break; | |
665 | case 19200: div_value = ftdi_sio_b19200; break; | |
666 | case 38400: div_value = ftdi_sio_b38400; break; | |
667 | case 57600: div_value = ftdi_sio_b57600; break; | |
668 | case 115200: div_value = ftdi_sio_b115200; break; | |
669 | } /* baud */ | |
670 | if (div_value == 0) { | |
441b62c1 | 671 | dbg("%s - Baudrate (%d) requested is not supported", __func__, baud); |
1da177e4 | 672 | div_value = ftdi_sio_b9600; |
bd5e47cc | 673 | baud = 9600; |
1da177e4 LT |
674 | div_okay = 0; |
675 | } | |
676 | break; | |
677 | case FT8U232AM: /* 8U232AM chip */ | |
678 | if (baud <= 3000000) { | |
679 | div_value = ftdi_232am_baud_to_divisor(baud); | |
680 | } else { | |
441b62c1 | 681 | dbg("%s - Baud rate too high!", __func__); |
bd5e47cc | 682 | baud = 9600; |
1da177e4 LT |
683 | div_value = ftdi_232am_baud_to_divisor(9600); |
684 | div_okay = 0; | |
685 | } | |
686 | break; | |
687 | case FT232BM: /* FT232BM chip */ | |
688 | case FT2232C: /* FT2232C chip */ | |
3b009c63 | 689 | case FT232RL: |
1da177e4 LT |
690 | if (baud <= 3000000) { |
691 | div_value = ftdi_232bm_baud_to_divisor(baud); | |
692 | } else { | |
441b62c1 | 693 | dbg("%s - Baud rate too high!", __func__); |
1da177e4 LT |
694 | div_value = ftdi_232bm_baud_to_divisor(9600); |
695 | div_okay = 0; | |
669a6db1 | 696 | baud = 9600; |
1da177e4 LT |
697 | } |
698 | break; | |
699 | } /* priv->chip_type */ | |
700 | ||
701 | if (div_okay) { | |
702 | dbg("%s - Baud rate set to %d (divisor 0x%lX) on chip %s", | |
441b62c1 | 703 | __func__, baud, (unsigned long)div_value, |
1da177e4 LT |
704 | ftdi_chip_name[priv->chip_type]); |
705 | } | |
706 | ||
669a6db1 | 707 | tty_encode_baud_rate(port->tty, baud, baud); |
1da177e4 LT |
708 | return(div_value); |
709 | } | |
710 | ||
711 | ||
712 | static int get_serial_info(struct usb_serial_port * port, struct serial_struct __user * retinfo) | |
713 | { | |
714 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
715 | struct serial_struct tmp; | |
716 | ||
717 | if (!retinfo) | |
718 | return -EFAULT; | |
719 | memset(&tmp, 0, sizeof(tmp)); | |
720 | tmp.flags = priv->flags; | |
721 | tmp.baud_base = priv->baud_base; | |
722 | tmp.custom_divisor = priv->custom_divisor; | |
723 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
724 | return -EFAULT; | |
725 | return 0; | |
726 | } /* get_serial_info */ | |
727 | ||
728 | ||
729 | static int set_serial_info(struct usb_serial_port * port, struct serial_struct __user * newinfo) | |
730 | { /* set_serial_info */ | |
731 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
732 | struct serial_struct new_serial; | |
733 | struct ftdi_private old_priv; | |
734 | ||
735 | if (copy_from_user(&new_serial, newinfo, sizeof(new_serial))) | |
736 | return -EFAULT; | |
737 | old_priv = * priv; | |
738 | ||
739 | /* Do error checking and permission checking */ | |
740 | ||
741 | if (!capable(CAP_SYS_ADMIN)) { | |
742 | if (((new_serial.flags & ~ASYNC_USR_MASK) != | |
743 | (priv->flags & ~ASYNC_USR_MASK))) | |
744 | return -EPERM; | |
745 | priv->flags = ((priv->flags & ~ASYNC_USR_MASK) | | |
746 | (new_serial.flags & ASYNC_USR_MASK)); | |
747 | priv->custom_divisor = new_serial.custom_divisor; | |
748 | goto check_and_exit; | |
749 | } | |
750 | ||
751 | if ((new_serial.baud_base != priv->baud_base) && | |
752 | (new_serial.baud_base < 9600)) | |
753 | return -EINVAL; | |
754 | ||
755 | /* Make the changes - these are privileged changes! */ | |
756 | ||
757 | priv->flags = ((priv->flags & ~ASYNC_FLAGS) | | |
5c09d144 | 758 | (new_serial.flags & ASYNC_FLAGS)); |
1da177e4 LT |
759 | priv->custom_divisor = new_serial.custom_divisor; |
760 | ||
761 | port->tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0; | |
762 | ||
763 | check_and_exit: | |
764 | if ((old_priv.flags & ASYNC_SPD_MASK) != | |
765 | (priv->flags & ASYNC_SPD_MASK)) { | |
766 | if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) | |
767 | port->tty->alt_speed = 57600; | |
768 | else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
769 | port->tty->alt_speed = 115200; | |
770 | else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
771 | port->tty->alt_speed = 230400; | |
772 | else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
773 | port->tty->alt_speed = 460800; | |
774 | else | |
775 | port->tty->alt_speed = 0; | |
776 | } | |
777 | if (((old_priv.flags & ASYNC_SPD_MASK) != | |
778 | (priv->flags & ASYNC_SPD_MASK)) || | |
779 | (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) && | |
780 | (old_priv.custom_divisor != priv->custom_divisor))) { | |
781 | change_speed(port); | |
782 | } | |
5c09d144 | 783 | |
1da177e4 LT |
784 | return (0); |
785 | ||
786 | } /* set_serial_info */ | |
787 | ||
788 | ||
8f977e42 IA |
789 | /* Determine type of FTDI chip based on USB config and descriptor. */ |
790 | static void ftdi_determine_type(struct usb_serial_port *port) | |
791 | { | |
792 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
793 | struct usb_serial *serial = port->serial; | |
794 | struct usb_device *udev = serial->dev; | |
795 | unsigned version; | |
796 | unsigned interfaces; | |
797 | ||
798 | /* Assume it is not the original SIO device for now. */ | |
f5e09b7c | 799 | priv->baud_base = 48000000 / 2; |
8f977e42 IA |
800 | priv->write_offset = 0; |
801 | ||
802 | version = le16_to_cpu(udev->descriptor.bcdDevice); | |
803 | interfaces = udev->actconfig->desc.bNumInterfaces; | |
441b62c1 | 804 | dbg("%s: bcdDevice = 0x%x, bNumInterfaces = %u", __func__, |
8f977e42 IA |
805 | version, interfaces); |
806 | if (interfaces > 1) { | |
807 | int inter; | |
808 | ||
809 | /* Multiple interfaces. Assume FT2232C. */ | |
810 | priv->chip_type = FT2232C; | |
811 | /* Determine interface code. */ | |
812 | inter = serial->interface->altsetting->desc.bInterfaceNumber; | |
813 | if (inter == 0) { | |
814 | priv->interface = PIT_SIOA; | |
815 | } else { | |
816 | priv->interface = PIT_SIOB; | |
817 | } | |
818 | /* BM-type devices have a bug where bcdDevice gets set | |
819 | * to 0x200 when iSerialNumber is 0. */ | |
820 | if (version < 0x500) { | |
821 | dbg("%s: something fishy - bcdDevice too low for multi-interface device", | |
441b62c1 | 822 | __func__); |
8f977e42 IA |
823 | } |
824 | } else if (version < 0x200) { | |
825 | /* Old device. Assume its the original SIO. */ | |
826 | priv->chip_type = SIO; | |
827 | priv->baud_base = 12000000 / 16; | |
828 | priv->write_offset = 1; | |
829 | } else if (version < 0x400) { | |
830 | /* Assume its an FT8U232AM (or FT8U245AM) */ | |
831 | /* (It might be a BM because of the iSerialNumber bug, | |
832 | * but it will still work as an AM device.) */ | |
833 | priv->chip_type = FT8U232AM; | |
3b009c63 | 834 | } else if (version < 0x600) { |
8f977e42 IA |
835 | /* Assume its an FT232BM (or FT245BM) */ |
836 | priv->chip_type = FT232BM; | |
3b009c63 DB |
837 | } else { |
838 | /* Assume its an FT232R */ | |
839 | priv->chip_type = FT232RL; | |
8f977e42 IA |
840 | } |
841 | info("Detected %s", ftdi_chip_name[priv->chip_type]); | |
842 | } | |
843 | ||
844 | ||
1da177e4 LT |
845 | /* |
846 | * *************************************************************************** | |
847 | * Sysfs Attribute | |
848 | * *************************************************************************** | |
849 | */ | |
850 | ||
060b8845 | 851 | static ssize_t show_latency_timer(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
852 | { |
853 | struct usb_serial_port *port = to_usb_serial_port(dev); | |
854 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
12bdbe03 | 855 | struct usb_device *udev = port->serial->dev; |
1da177e4 LT |
856 | unsigned short latency = 0; |
857 | int rv = 0; | |
5c09d144 | 858 | |
5c09d144 | 859 | |
441b62c1 | 860 | dbg("%s",__func__); |
5c09d144 | 861 | |
1da177e4 LT |
862 | rv = usb_control_msg(udev, |
863 | usb_rcvctrlpipe(udev, 0), | |
864 | FTDI_SIO_GET_LATENCY_TIMER_REQUEST, | |
865 | FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE, | |
5c09d144 | 866 | 0, priv->interface, |
1da177e4 | 867 | (char*) &latency, 1, WDR_TIMEOUT); |
5c09d144 | 868 | |
1da177e4 | 869 | if (rv < 0) { |
898eb71c | 870 | dev_err(dev, "Unable to read latency timer: %i\n", rv); |
1da177e4 LT |
871 | return -EIO; |
872 | } | |
873 | return sprintf(buf, "%i\n", latency); | |
874 | } | |
875 | ||
876 | /* Write a new value of the latency timer, in units of milliseconds. */ | |
060b8845 | 877 | static ssize_t store_latency_timer(struct device *dev, struct device_attribute *attr, const char *valbuf, |
1da177e4 LT |
878 | size_t count) |
879 | { | |
880 | struct usb_serial_port *port = to_usb_serial_port(dev); | |
881 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
12bdbe03 | 882 | struct usb_device *udev = port->serial->dev; |
1da177e4 LT |
883 | char buf[1]; |
884 | int v = simple_strtoul(valbuf, NULL, 10); | |
885 | int rv = 0; | |
5c09d144 | 886 | |
441b62c1 | 887 | dbg("%s: setting latency timer = %i", __func__, v); |
5c09d144 | 888 | |
1da177e4 LT |
889 | rv = usb_control_msg(udev, |
890 | usb_sndctrlpipe(udev, 0), | |
891 | FTDI_SIO_SET_LATENCY_TIMER_REQUEST, | |
892 | FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE, | |
5c09d144 | 893 | v, priv->interface, |
1da177e4 | 894 | buf, 0, WDR_TIMEOUT); |
5c09d144 | 895 | |
1da177e4 | 896 | if (rv < 0) { |
898eb71c | 897 | dev_err(dev, "Unable to write latency timer: %i\n", rv); |
1da177e4 LT |
898 | return -EIO; |
899 | } | |
5c09d144 | 900 | |
1da177e4 LT |
901 | return count; |
902 | } | |
903 | ||
904 | /* Write an event character directly to the FTDI register. The ASCII | |
905 | value is in the low 8 bits, with the enable bit in the 9th bit. */ | |
060b8845 | 906 | static ssize_t store_event_char(struct device *dev, struct device_attribute *attr, const char *valbuf, |
1da177e4 LT |
907 | size_t count) |
908 | { | |
909 | struct usb_serial_port *port = to_usb_serial_port(dev); | |
910 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
12bdbe03 | 911 | struct usb_device *udev = port->serial->dev; |
1da177e4 LT |
912 | char buf[1]; |
913 | int v = simple_strtoul(valbuf, NULL, 10); | |
914 | int rv = 0; | |
5c09d144 | 915 | |
441b62c1 | 916 | dbg("%s: setting event char = %i", __func__, v); |
5c09d144 | 917 | |
1da177e4 LT |
918 | rv = usb_control_msg(udev, |
919 | usb_sndctrlpipe(udev, 0), | |
920 | FTDI_SIO_SET_EVENT_CHAR_REQUEST, | |
921 | FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE, | |
5c09d144 | 922 | v, priv->interface, |
1da177e4 | 923 | buf, 0, WDR_TIMEOUT); |
5c09d144 | 924 | |
1da177e4 LT |
925 | if (rv < 0) { |
926 | dbg("Unable to write event character: %i", rv); | |
927 | return -EIO; | |
928 | } | |
5c09d144 | 929 | |
1da177e4 LT |
930 | return count; |
931 | } | |
932 | ||
933 | static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer, store_latency_timer); | |
934 | static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char); | |
935 | ||
12bdbe03 | 936 | static int create_sysfs_attrs(struct usb_serial_port *port) |
13f4db9e | 937 | { |
12bdbe03 | 938 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
13f4db9e | 939 | int retval = 0; |
1da177e4 | 940 | |
441b62c1 | 941 | dbg("%s",__func__); |
13f4db9e | 942 | |
1da177e4 LT |
943 | /* XXX I've no idea if the original SIO supports the event_char |
944 | * sysfs parameter, so I'm playing it safe. */ | |
945 | if (priv->chip_type != SIO) { | |
946 | dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]); | |
12bdbe03 | 947 | retval = device_create_file(&port->dev, &dev_attr_event_char); |
13f4db9e | 948 | if ((!retval) && |
97cd49eb SM |
949 | (priv->chip_type == FT232BM || |
950 | priv->chip_type == FT2232C || | |
951 | priv->chip_type == FT232RL)) { | |
12bdbe03 | 952 | retval = device_create_file(&port->dev, |
13f4db9e | 953 | &dev_attr_latency_timer); |
1da177e4 LT |
954 | } |
955 | } | |
13f4db9e | 956 | return retval; |
1da177e4 LT |
957 | } |
958 | ||
12bdbe03 | 959 | static void remove_sysfs_attrs(struct usb_serial_port *port) |
1da177e4 | 960 | { |
12bdbe03 | 961 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
1da177e4 | 962 | |
441b62c1 | 963 | dbg("%s",__func__); |
1da177e4 | 964 | |
1da177e4 LT |
965 | /* XXX see create_sysfs_attrs */ |
966 | if (priv->chip_type != SIO) { | |
12bdbe03 | 967 | device_remove_file(&port->dev, &dev_attr_event_char); |
ed6e5282 AB |
968 | if (priv->chip_type == FT232BM || |
969 | priv->chip_type == FT2232C || | |
970 | priv->chip_type == FT232RL) { | |
12bdbe03 | 971 | device_remove_file(&port->dev, &dev_attr_latency_timer); |
1da177e4 LT |
972 | } |
973 | } | |
5c09d144 | 974 | |
1da177e4 LT |
975 | } |
976 | ||
977 | /* | |
978 | * *************************************************************************** | |
979 | * FTDI driver specific functions | |
980 | * *************************************************************************** | |
981 | */ | |
982 | ||
8f977e42 IA |
983 | /* Probe function to check for special devices */ |
984 | static int ftdi_sio_probe (struct usb_serial *serial, const struct usb_device_id *id) | |
985 | { | |
fa91d43b TL |
986 | struct ftdi_sio_quirk *quirk = (struct ftdi_sio_quirk *)id->driver_info; |
987 | ||
988 | if (quirk && quirk->probe) { | |
989 | int ret = quirk->probe(serial); | |
990 | if (ret != 0) | |
991 | return ret; | |
992 | } | |
993 | ||
8f977e42 IA |
994 | usb_set_serial_data(serial, (void *)id->driver_info); |
995 | ||
fa91d43b | 996 | return 0; |
8f977e42 IA |
997 | } |
998 | ||
12bdbe03 | 999 | static int ftdi_sio_port_probe(struct usb_serial_port *port) |
1da177e4 | 1000 | { |
1da177e4 | 1001 | struct ftdi_private *priv; |
0ffbbe25 ON |
1002 | struct ftdi_sio_quirk *quirk = usb_get_serial_data(port->serial); |
1003 | ||
13f4db9e | 1004 | |
441b62c1 | 1005 | dbg("%s",__func__); |
1da177e4 | 1006 | |
80b6ca48 | 1007 | priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL); |
1da177e4 | 1008 | if (!priv){ |
441b62c1 | 1009 | err("%s- kmalloc(%Zd) failed.", __func__, sizeof(struct ftdi_private)); |
1da177e4 LT |
1010 | return -ENOMEM; |
1011 | } | |
1da177e4 LT |
1012 | |
1013 | spin_lock_init(&priv->rx_lock); | |
22465400 | 1014 | spin_lock_init(&priv->tx_lock); |
1da177e4 LT |
1015 | init_waitqueue_head(&priv->delta_msr_wait); |
1016 | /* This will push the characters through immediately rather | |
1017 | than queue a task to deliver them */ | |
1018 | priv->flags = ASYNC_LOW_LATENCY; | |
1019 | ||
0ffbbe25 ON |
1020 | if (quirk && quirk->port_probe) |
1021 | quirk->port_probe(priv); | |
1022 | ||
1da177e4 | 1023 | /* Increase the size of read buffers */ |
1bc3c9e1 | 1024 | kfree(port->bulk_in_buffer); |
1da177e4 LT |
1025 | port->bulk_in_buffer = kmalloc (BUFSZ, GFP_KERNEL); |
1026 | if (!port->bulk_in_buffer) { | |
1027 | kfree (priv); | |
1028 | return -ENOMEM; | |
1029 | } | |
1030 | if (port->read_urb) { | |
1031 | port->read_urb->transfer_buffer = port->bulk_in_buffer; | |
1032 | port->read_urb->transfer_buffer_length = BUFSZ; | |
1033 | } | |
1034 | ||
c4028958 DH |
1035 | INIT_DELAYED_WORK(&priv->rx_work, ftdi_process_read); |
1036 | priv->port = port; | |
76854cea | 1037 | |
1da177e4 LT |
1038 | /* Free port's existing write urb and transfer buffer. */ |
1039 | if (port->write_urb) { | |
1040 | usb_free_urb (port->write_urb); | |
1041 | port->write_urb = NULL; | |
1042 | } | |
1bc3c9e1 JJ |
1043 | kfree(port->bulk_out_buffer); |
1044 | port->bulk_out_buffer = NULL; | |
1da177e4 | 1045 | |
12bdbe03 | 1046 | usb_set_serial_port_data(port, priv); |
1da177e4 | 1047 | |
12bdbe03 JR |
1048 | ftdi_determine_type (port); |
1049 | create_sysfs_attrs(port); | |
1050 | return 0; | |
1051 | } | |
1da177e4 | 1052 | |
8f977e42 IA |
1053 | /* Setup for the USB-UIRT device, which requires hardwired |
1054 | * baudrate (38400 gets mapped to 312500) */ | |
1da177e4 | 1055 | /* Called from usbserial:serial_probe */ |
0ffbbe25 | 1056 | static void ftdi_USB_UIRT_setup (struct ftdi_private *priv) |
8f977e42 | 1057 | { |
441b62c1 | 1058 | dbg("%s",__func__); |
1da177e4 | 1059 | |
1da177e4 LT |
1060 | priv->flags |= ASYNC_SPD_CUST; |
1061 | priv->custom_divisor = 77; | |
669a6db1 | 1062 | priv->force_baud = 38400; |
8f977e42 | 1063 | } /* ftdi_USB_UIRT_setup */ |
1da177e4 | 1064 | |
8f977e42 IA |
1065 | /* Setup for the HE-TIRA1 device, which requires hardwired |
1066 | * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */ | |
0ffbbe25 | 1067 | static void ftdi_HE_TIRA1_setup (struct ftdi_private *priv) |
8f977e42 | 1068 | { |
441b62c1 | 1069 | dbg("%s",__func__); |
1da177e4 | 1070 | |
1da177e4 LT |
1071 | priv->flags |= ASYNC_SPD_CUST; |
1072 | priv->custom_divisor = 240; | |
669a6db1 | 1073 | priv->force_baud = 38400; |
1da177e4 | 1074 | priv->force_rtscts = 1; |
8f977e42 | 1075 | } /* ftdi_HE_TIRA1_setup */ |
1da177e4 | 1076 | |
fa91d43b | 1077 | /* |
20734345 HW |
1078 | * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko |
1079 | * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from | |
1080 | * userspace using openocd. | |
fa91d43b | 1081 | */ |
20734345 | 1082 | static int ftdi_jtag_probe(struct usb_serial *serial) |
fa91d43b TL |
1083 | { |
1084 | struct usb_device *udev = serial->dev; | |
1085 | struct usb_interface *interface = serial->interface; | |
1086 | ||
441b62c1 | 1087 | dbg("%s",__func__); |
fa91d43b TL |
1088 | |
1089 | if (interface == udev->actconfig->interface[0]) { | |
20734345 | 1090 | info("Ignoring serial port reserved for JTAG"); |
fa91d43b TL |
1091 | return -ENODEV; |
1092 | } | |
1093 | ||
1094 | return 0; | |
1095 | } | |
1da177e4 | 1096 | |
546d7eec KV |
1097 | /* |
1098 | * The Matrix Orbital VK204-25-USB has an invalid IN endpoint. | |
1099 | * We have to correct it if we want to read from it. | |
1100 | */ | |
1101 | static int ftdi_mtxorb_hack_setup(struct usb_serial *serial) | |
1102 | { | |
1103 | struct usb_host_endpoint *ep = serial->dev->ep_in[1]; | |
1104 | struct usb_endpoint_descriptor *ep_desc = &ep->desc; | |
1105 | ||
1106 | if (ep->enabled && ep_desc->wMaxPacketSize == 0) { | |
fd05e720 | 1107 | ep_desc->wMaxPacketSize = cpu_to_le16(0x40); |
546d7eec KV |
1108 | info("Fixing invalid wMaxPacketSize on read pipe"); |
1109 | } | |
1110 | ||
1111 | return 0; | |
1112 | } | |
1113 | ||
5c09d144 | 1114 | /* ftdi_shutdown is called from usbserial:usb_serial_disconnect |
1da177e4 LT |
1115 | * it is called when the usb device is disconnected |
1116 | * | |
1117 | * usbserial:usb_serial_disconnect | |
1118 | * calls __serial_close for each open of the port | |
1119 | * shutdown is called then (ie ftdi_shutdown) | |
1120 | */ | |
1da177e4 | 1121 | static void ftdi_shutdown (struct usb_serial *serial) |
12bdbe03 | 1122 | { |
441b62c1 | 1123 | dbg("%s", __func__); |
12bdbe03 | 1124 | } |
5c09d144 | 1125 | |
12bdbe03 JR |
1126 | static int ftdi_sio_port_remove(struct usb_serial_port *port) |
1127 | { | |
1da177e4 LT |
1128 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
1129 | ||
441b62c1 | 1130 | dbg("%s", __func__); |
1da177e4 | 1131 | |
12bdbe03 | 1132 | remove_sysfs_attrs(port); |
5c09d144 DB |
1133 | |
1134 | /* all open ports are closed at this point | |
1135 | * (by usbserial.c:__serial_close, which calls ftdi_close) | |
1da177e4 LT |
1136 | */ |
1137 | ||
1138 | if (priv) { | |
1139 | usb_set_serial_port_data(port, NULL); | |
1140 | kfree(priv); | |
1141 | } | |
1da177e4 | 1142 | |
12bdbe03 JR |
1143 | return 0; |
1144 | } | |
1da177e4 LT |
1145 | |
1146 | static int ftdi_open (struct usb_serial_port *port, struct file *filp) | |
1147 | { /* ftdi_open */ | |
1da177e4 LT |
1148 | struct usb_device *dev = port->serial->dev; |
1149 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
1150 | unsigned long flags; | |
5c09d144 | 1151 | |
1da177e4 LT |
1152 | int result = 0; |
1153 | char buf[1]; /* Needed for the usb_control_msg I think */ | |
1154 | ||
441b62c1 | 1155 | dbg("%s", __func__); |
1da177e4 | 1156 | |
22465400 IA |
1157 | spin_lock_irqsave(&priv->tx_lock, flags); |
1158 | priv->tx_bytes = 0; | |
1159 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1160 | spin_lock_irqsave(&priv->rx_lock, flags); | |
1161 | priv->rx_bytes = 0; | |
1162 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
1163 | ||
57845bd1 GL |
1164 | if (port->tty) |
1165 | port->tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0; | |
1da177e4 LT |
1166 | |
1167 | /* No error checking for this (will get errors later anyway) */ | |
1168 | /* See ftdi_sio.h for description of what is reset */ | |
1169 | usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
5c09d144 DB |
1170 | FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE, |
1171 | FTDI_SIO_RESET_SIO, | |
1da177e4 LT |
1172 | priv->interface, buf, 0, WDR_TIMEOUT); |
1173 | ||
1174 | /* Termios defaults are set by usb_serial_init. We don't change | |
1175 | port->tty->termios - this would loose speed settings, etc. | |
1176 | This is same behaviour as serial.c/rs_open() - Kuba */ | |
1177 | ||
1178 | /* ftdi_set_termios will send usb control messages */ | |
57845bd1 | 1179 | if (port->tty) |
669a6db1 | 1180 | ftdi_set_termios(port, port->tty->termios); |
1da177e4 LT |
1181 | |
1182 | /* FIXME: Flow control might be enabled, so it should be checked - | |
1183 | we have no control of defaults! */ | |
1184 | /* Turn on RTS and DTR since we are not flow controlling by default */ | |
74ede0ff | 1185 | set_mctrl(port, TIOCM_DTR | TIOCM_RTS); |
1da177e4 LT |
1186 | |
1187 | /* Not throttled */ | |
1188 | spin_lock_irqsave(&priv->rx_lock, flags); | |
1189 | priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED); | |
1190 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
1191 | ||
1192 | /* Start reading from the device */ | |
76854cea | 1193 | priv->rx_processed = 0; |
1da177e4 LT |
1194 | usb_fill_bulk_urb(port->read_urb, dev, |
1195 | usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress), | |
1196 | port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length, | |
1197 | ftdi_read_bulk_callback, port); | |
1198 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
1199 | if (result) | |
441b62c1 | 1200 | err("%s - failed submitting read urb, error %d", __func__, result); |
1da177e4 LT |
1201 | |
1202 | ||
1203 | return result; | |
1204 | } /* ftdi_open */ | |
1205 | ||
1206 | ||
1207 | ||
5c09d144 | 1208 | /* |
1da177e4 LT |
1209 | * usbserial:__serial_close only calls ftdi_close if the point is open |
1210 | * | |
1211 | * This only gets called when it is the last close | |
5c09d144 DB |
1212 | * |
1213 | * | |
1da177e4 LT |
1214 | */ |
1215 | ||
1216 | static void ftdi_close (struct usb_serial_port *port, struct file *filp) | |
1217 | { /* ftdi_close */ | |
1218 | unsigned int c_cflag = port->tty->termios->c_cflag; | |
1219 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
1220 | char buf[1]; | |
1221 | ||
441b62c1 | 1222 | dbg("%s", __func__); |
1da177e4 | 1223 | |
95bef012 ON |
1224 | mutex_lock(&port->serial->disc_mutex); |
1225 | if (c_cflag & HUPCL && !port->serial->disconnected){ | |
1da177e4 | 1226 | /* Disable flow control */ |
5c09d144 | 1227 | if (usb_control_msg(port->serial->dev, |
1da177e4 LT |
1228 | usb_sndctrlpipe(port->serial->dev, 0), |
1229 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, | |
1230 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, | |
1231 | 0, priv->interface, buf, 0, | |
1232 | WDR_TIMEOUT) < 0) { | |
1233 | err("error from flowcontrol urb"); | |
5c09d144 | 1234 | } |
1da177e4 | 1235 | |
74ede0ff IA |
1236 | /* drop RTS and DTR */ |
1237 | clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); | |
1da177e4 | 1238 | } /* Note change no line if hupcl is off */ |
95bef012 | 1239 | mutex_unlock(&port->serial->disc_mutex); |
76854cea IA |
1240 | |
1241 | /* cancel any scheduled reading */ | |
1242 | cancel_delayed_work(&priv->rx_work); | |
1243 | flush_scheduled_work(); | |
5c09d144 | 1244 | |
1da177e4 | 1245 | /* shutdown our bulk read */ |
794c944e | 1246 | usb_kill_urb(port->read_urb); |
1da177e4 LT |
1247 | } /* ftdi_close */ |
1248 | ||
1249 | ||
5c09d144 | 1250 | |
1da177e4 LT |
1251 | /* The SIO requires the first byte to have: |
1252 | * B0 1 | |
1253 | * B1 0 | |
1254 | * B2..7 length of message excluding byte 0 | |
1255 | * | |
1256 | * The new devices do not require this byte | |
1257 | */ | |
1258 | static int ftdi_write (struct usb_serial_port *port, | |
1259 | const unsigned char *buf, int count) | |
1260 | { /* ftdi_write */ | |
1261 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
1262 | struct urb *urb; | |
1263 | unsigned char *buffer; | |
1264 | int data_offset ; /* will be 1 for the SIO and 0 otherwise */ | |
1265 | int status; | |
1266 | int transfer_size; | |
22465400 | 1267 | unsigned long flags; |
1da177e4 | 1268 | |
441b62c1 | 1269 | dbg("%s port %d, %d bytes", __func__, port->number, count); |
1da177e4 LT |
1270 | |
1271 | if (count == 0) { | |
1272 | dbg("write request of 0 bytes"); | |
1273 | return 0; | |
1274 | } | |
22465400 IA |
1275 | spin_lock_irqsave(&priv->tx_lock, flags); |
1276 | if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) { | |
1277 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
441b62c1 | 1278 | dbg("%s - write limit hit\n", __func__); |
22465400 IA |
1279 | return 0; |
1280 | } | |
62127a58 | 1281 | priv->tx_outstanding_urbs++; |
22465400 | 1282 | spin_unlock_irqrestore(&priv->tx_lock, flags); |
5c09d144 | 1283 | |
1da177e4 LT |
1284 | data_offset = priv->write_offset; |
1285 | dbg("data_offset set to %d",data_offset); | |
1286 | ||
1287 | /* Determine total transfer size */ | |
1288 | transfer_size = count; | |
1289 | if (data_offset > 0) { | |
1290 | /* Original sio needs control bytes too... */ | |
1291 | transfer_size += (data_offset * | |
1292 | ((count + (PKTSZ - 1 - data_offset)) / | |
1293 | (PKTSZ - data_offset))); | |
1294 | } | |
1295 | ||
1296 | buffer = kmalloc (transfer_size, GFP_ATOMIC); | |
1297 | if (!buffer) { | |
441b62c1 | 1298 | err("%s ran out of kernel memory for urb ...", __func__); |
62127a58 ON |
1299 | count = -ENOMEM; |
1300 | goto error_no_buffer; | |
1da177e4 LT |
1301 | } |
1302 | ||
1303 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
1304 | if (!urb) { | |
441b62c1 | 1305 | err("%s - no more free urbs", __func__); |
62127a58 ON |
1306 | count = -ENOMEM; |
1307 | goto error_no_urb; | |
1da177e4 LT |
1308 | } |
1309 | ||
1310 | /* Copy data */ | |
1311 | if (data_offset > 0) { | |
1312 | /* Original sio requires control byte at start of each packet. */ | |
1313 | int user_pktsz = PKTSZ - data_offset; | |
1314 | int todo = count; | |
1315 | unsigned char *first_byte = buffer; | |
1316 | const unsigned char *current_position = buf; | |
1317 | ||
1318 | while (todo > 0) { | |
1319 | if (user_pktsz > todo) { | |
1320 | user_pktsz = todo; | |
1321 | } | |
1322 | /* Write the control byte at the front of the packet*/ | |
5c09d144 | 1323 | *first_byte = 1 | ((user_pktsz) << 2); |
1da177e4 LT |
1324 | /* Copy data for packet */ |
1325 | memcpy (first_byte + data_offset, | |
1326 | current_position, user_pktsz); | |
1327 | first_byte += user_pktsz + data_offset; | |
1328 | current_position += user_pktsz; | |
1329 | todo -= user_pktsz; | |
1330 | } | |
1331 | } else { | |
1332 | /* No control byte required. */ | |
1333 | /* Copy in the data to send */ | |
1334 | memcpy (buffer, buf, count); | |
1335 | } | |
1336 | ||
441b62c1 | 1337 | usb_serial_debug_data(debug, &port->dev, __func__, transfer_size, buffer); |
1da177e4 LT |
1338 | |
1339 | /* fill the buffer and send it */ | |
5c09d144 | 1340 | usb_fill_bulk_urb(urb, port->serial->dev, |
1da177e4 LT |
1341 | usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), |
1342 | buffer, transfer_size, | |
1343 | ftdi_write_bulk_callback, port); | |
1344 | ||
1345 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1346 | if (status) { | |
441b62c1 | 1347 | err("%s - failed submitting write urb, error %d", __func__, status); |
1da177e4 | 1348 | count = status; |
62127a58 | 1349 | goto error; |
22465400 IA |
1350 | } else { |
1351 | spin_lock_irqsave(&priv->tx_lock, flags); | |
22465400 IA |
1352 | priv->tx_outstanding_bytes += count; |
1353 | priv->tx_bytes += count; | |
1354 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1da177e4 LT |
1355 | } |
1356 | ||
1357 | /* we are done with this urb, so let the host driver | |
1358 | * really free it when it is finished with it */ | |
62127a58 | 1359 | usb_free_urb(urb); |
1da177e4 | 1360 | |
441b62c1 | 1361 | dbg("%s write returning: %d", __func__, count); |
1da177e4 | 1362 | return count; |
62127a58 ON |
1363 | error: |
1364 | usb_free_urb(urb); | |
1365 | error_no_urb: | |
1366 | kfree (buffer); | |
1367 | error_no_buffer: | |
1368 | spin_lock_irqsave(&priv->tx_lock, flags); | |
1369 | priv->tx_outstanding_urbs--; | |
1370 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1371 | return count; | |
1da177e4 LT |
1372 | } /* ftdi_write */ |
1373 | ||
1374 | ||
1375 | /* This function may get called when the device is closed */ | |
1376 | ||
7d12e780 | 1377 | static void ftdi_write_bulk_callback (struct urb *urb) |
1da177e4 | 1378 | { |
22465400 | 1379 | unsigned long flags; |
cdc97792 | 1380 | struct usb_serial_port *port = urb->context; |
22465400 IA |
1381 | struct ftdi_private *priv; |
1382 | int data_offset; /* will be 1 for the SIO and 0 otherwise */ | |
1383 | unsigned long countback; | |
0fb0aa18 | 1384 | int status = urb->status; |
1da177e4 LT |
1385 | |
1386 | /* free up the transfer buffer, as usb_free_urb() does not do this */ | |
1387 | kfree (urb->transfer_buffer); | |
1388 | ||
441b62c1 | 1389 | dbg("%s - port %d", __func__, port->number); |
5c09d144 | 1390 | |
0fb0aa18 GKH |
1391 | if (status) { |
1392 | dbg("nonzero write bulk status received: %d", status); | |
1da177e4 LT |
1393 | return; |
1394 | } | |
1395 | ||
22465400 IA |
1396 | priv = usb_get_serial_port_data(port); |
1397 | if (!priv) { | |
441b62c1 | 1398 | dbg("%s - bad port private data pointer - exiting", __func__); |
22465400 IA |
1399 | return; |
1400 | } | |
1401 | /* account for transferred data */ | |
1402 | countback = urb->actual_length; | |
1403 | data_offset = priv->write_offset; | |
1404 | if (data_offset > 0) { | |
1405 | /* Subtract the control bytes */ | |
dfa5ec79 | 1406 | countback -= (data_offset * DIV_ROUND_UP(countback, PKTSZ)); |
22465400 IA |
1407 | } |
1408 | spin_lock_irqsave(&priv->tx_lock, flags); | |
1409 | --priv->tx_outstanding_urbs; | |
1410 | priv->tx_outstanding_bytes -= countback; | |
1411 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1412 | ||
cf2c7481 | 1413 | usb_serial_port_softint(port); |
1da177e4 LT |
1414 | } /* ftdi_write_bulk_callback */ |
1415 | ||
1416 | ||
1417 | static int ftdi_write_room( struct usb_serial_port *port ) | |
1418 | { | |
22465400 IA |
1419 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
1420 | int room; | |
1421 | unsigned long flags; | |
1422 | ||
441b62c1 | 1423 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 1424 | |
22465400 IA |
1425 | spin_lock_irqsave(&priv->tx_lock, flags); |
1426 | if (priv->tx_outstanding_urbs < URB_UPPER_LIMIT) { | |
1427 | /* | |
1428 | * We really can take anything the user throws at us | |
1429 | * but let's pick a nice big number to tell the tty | |
1430 | * layer that we have lots of free space | |
1431 | */ | |
1432 | room = 2048; | |
1433 | } else { | |
1434 | room = 0; | |
1435 | } | |
1436 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1437 | return room; | |
1da177e4 LT |
1438 | } /* ftdi_write_room */ |
1439 | ||
1440 | ||
1441 | static int ftdi_chars_in_buffer (struct usb_serial_port *port) | |
1442 | { /* ftdi_chars_in_buffer */ | |
22465400 IA |
1443 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
1444 | int buffered; | |
1445 | unsigned long flags; | |
1446 | ||
441b62c1 | 1447 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 1448 | |
22465400 IA |
1449 | spin_lock_irqsave(&priv->tx_lock, flags); |
1450 | buffered = (int)priv->tx_outstanding_bytes; | |
1451 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1452 | if (buffered < 0) { | |
441b62c1 | 1453 | err("%s outstanding tx bytes is negative!", __func__); |
22465400 IA |
1454 | buffered = 0; |
1455 | } | |
1456 | return buffered; | |
1da177e4 LT |
1457 | } /* ftdi_chars_in_buffer */ |
1458 | ||
1459 | ||
1460 | ||
7d12e780 | 1461 | static void ftdi_read_bulk_callback (struct urb *urb) |
1da177e4 | 1462 | { /* ftdi_read_bulk_callback */ |
cdc97792 | 1463 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
1464 | struct tty_struct *tty; |
1465 | struct ftdi_private *priv; | |
22465400 IA |
1466 | unsigned long countread; |
1467 | unsigned long flags; | |
0fb0aa18 | 1468 | int status = urb->status; |
1da177e4 LT |
1469 | |
1470 | if (urb->number_of_packets > 0) { | |
441b62c1 | 1471 | err("%s transfer_buffer_length %d actual_length %d number of packets %d",__func__, |
1da177e4 | 1472 | urb->transfer_buffer_length, urb->actual_length, urb->number_of_packets ); |
441b62c1 | 1473 | err("%s transfer_flags %x ", __func__,urb->transfer_flags ); |
1da177e4 LT |
1474 | } |
1475 | ||
441b62c1 | 1476 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1477 | |
1478 | if (port->open_count <= 0) | |
1479 | return; | |
1480 | ||
1481 | tty = port->tty; | |
1482 | if (!tty) { | |
441b62c1 | 1483 | dbg("%s - bad tty pointer - exiting",__func__); |
1da177e4 LT |
1484 | return; |
1485 | } | |
1486 | ||
1487 | priv = usb_get_serial_port_data(port); | |
1488 | if (!priv) { | |
441b62c1 | 1489 | dbg("%s - bad port private data pointer - exiting", __func__); |
1da177e4 LT |
1490 | return; |
1491 | } | |
1492 | ||
1493 | if (urb != port->read_urb) { | |
441b62c1 | 1494 | err("%s - Not my urb!", __func__); |
1da177e4 LT |
1495 | } |
1496 | ||
0fb0aa18 | 1497 | if (status) { |
1da177e4 | 1498 | /* This will happen at close every time so it is a dbg not an err */ |
0fb0aa18 GKH |
1499 | dbg("(this is ok on close) nonzero read bulk status received: " |
1500 | "%d", status); | |
1da177e4 LT |
1501 | return; |
1502 | } | |
1503 | ||
22465400 IA |
1504 | /* count data bytes, but not status bytes */ |
1505 | countread = urb->actual_length; | |
dfa5ec79 | 1506 | countread -= 2 * DIV_ROUND_UP(countread, PKTSZ); |
22465400 IA |
1507 | spin_lock_irqsave(&priv->rx_lock, flags); |
1508 | priv->rx_bytes += countread; | |
1509 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
1510 | ||
c4028958 | 1511 | ftdi_process_read(&priv->rx_work.work); |
1da177e4 LT |
1512 | |
1513 | } /* ftdi_read_bulk_callback */ | |
1514 | ||
1515 | ||
c4028958 | 1516 | static void ftdi_process_read (struct work_struct *work) |
1da177e4 | 1517 | { /* ftdi_process_read */ |
c4028958 DH |
1518 | struct ftdi_private *priv = |
1519 | container_of(work, struct ftdi_private, rx_work.work); | |
1520 | struct usb_serial_port *port = priv->port; | |
1da177e4 LT |
1521 | struct urb *urb; |
1522 | struct tty_struct *tty; | |
1da177e4 | 1523 | char error_flag; |
5c09d144 | 1524 | unsigned char *data; |
1da177e4 LT |
1525 | |
1526 | int i; | |
1527 | int result; | |
1528 | int need_flip; | |
1529 | int packet_offset; | |
76854cea | 1530 | unsigned long flags; |
1da177e4 | 1531 | |
441b62c1 | 1532 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1533 | |
1534 | if (port->open_count <= 0) | |
1535 | return; | |
1536 | ||
1537 | tty = port->tty; | |
1538 | if (!tty) { | |
441b62c1 | 1539 | dbg("%s - bad tty pointer - exiting",__func__); |
1da177e4 LT |
1540 | return; |
1541 | } | |
1542 | ||
1543 | priv = usb_get_serial_port_data(port); | |
1544 | if (!priv) { | |
441b62c1 | 1545 | dbg("%s - bad port private data pointer - exiting", __func__); |
1da177e4 LT |
1546 | return; |
1547 | } | |
1548 | ||
1549 | urb = port->read_urb; | |
1550 | if (!urb) { | |
441b62c1 | 1551 | dbg("%s - bad read_urb pointer - exiting", __func__); |
1da177e4 LT |
1552 | return; |
1553 | } | |
1554 | ||
1555 | data = urb->transfer_buffer; | |
1556 | ||
76854cea | 1557 | if (priv->rx_processed) { |
441b62c1 | 1558 | dbg("%s - already processed: %d bytes, %d remain", __func__, |
76854cea IA |
1559 | priv->rx_processed, |
1560 | urb->actual_length - priv->rx_processed); | |
1da177e4 | 1561 | } else { |
76854cea IA |
1562 | /* The first two bytes of every read packet are status */ |
1563 | if (urb->actual_length > 2) { | |
441b62c1 | 1564 | usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data); |
76854cea IA |
1565 | } else { |
1566 | dbg("Status only: %03oo %03oo",data[0],data[1]); | |
1567 | } | |
1568 | } | |
1da177e4 LT |
1569 | |
1570 | ||
1571 | /* TO DO -- check for hung up line and handle appropriately: */ | |
1572 | /* send hangup */ | |
1573 | /* See acm.c - you do a tty_hangup - eg tty_hangup(tty) */ | |
1574 | /* if CD is dropped and the line is not CLOCAL then we should hangup */ | |
1575 | ||
1576 | need_flip = 0; | |
76854cea IA |
1577 | for (packet_offset = priv->rx_processed; packet_offset < urb->actual_length; packet_offset += PKTSZ) { |
1578 | int length; | |
1579 | ||
1da177e4 | 1580 | /* Compare new line status to the old one, signal if different */ |
76854cea IA |
1581 | /* N.B. packet may be processed more than once, but differences |
1582 | * are only processed once. */ | |
1da177e4 LT |
1583 | if (priv != NULL) { |
1584 | char new_status = data[packet_offset+0] & FTDI_STATUS_B0_MASK; | |
1585 | if (new_status != priv->prev_status) { | |
1586 | priv->diff_status |= new_status ^ priv->prev_status; | |
1587 | wake_up_interruptible(&priv->delta_msr_wait); | |
1588 | priv->prev_status = new_status; | |
1589 | } | |
1590 | } | |
1591 | ||
76854cea IA |
1592 | length = min(PKTSZ, urb->actual_length-packet_offset)-2; |
1593 | if (length < 0) { | |
441b62c1 | 1594 | err("%s - bad packet length: %d", __func__, length+2); |
76854cea IA |
1595 | length = 0; |
1596 | } | |
1597 | ||
76854cea | 1598 | if (priv->rx_flags & THROTTLED) { |
441b62c1 | 1599 | dbg("%s - throttled", __func__); |
76854cea IA |
1600 | break; |
1601 | } | |
33f0f88f | 1602 | if (tty_buffer_request_room(tty, length) < length) { |
76854cea | 1603 | /* break out & wait for throttling/unthrottling to happen */ |
441b62c1 | 1604 | dbg("%s - receive room low", __func__); |
76854cea IA |
1605 | break; |
1606 | } | |
1607 | ||
1da177e4 LT |
1608 | /* Handle errors and break */ |
1609 | error_flag = TTY_NORMAL; | |
1610 | /* Although the device uses a bitmask and hence can have multiple */ | |
1611 | /* errors on a packet - the order here sets the priority the */ | |
1612 | /* error is returned to the tty layer */ | |
1613 | ||
1614 | if ( data[packet_offset+1] & FTDI_RS_OE ) { | |
1615 | error_flag = TTY_OVERRUN; | |
1616 | dbg("OVERRRUN error"); | |
1617 | } | |
1618 | if ( data[packet_offset+1] & FTDI_RS_BI ) { | |
1619 | error_flag = TTY_BREAK; | |
1620 | dbg("BREAK received"); | |
1621 | } | |
1622 | if ( data[packet_offset+1] & FTDI_RS_PE ) { | |
1623 | error_flag = TTY_PARITY; | |
1624 | dbg("PARITY error"); | |
1625 | } | |
1626 | if ( data[packet_offset+1] & FTDI_RS_FE ) { | |
1627 | error_flag = TTY_FRAME; | |
1628 | dbg("FRAMING error"); | |
1629 | } | |
76854cea IA |
1630 | if (length > 0) { |
1631 | for (i = 2; i < length+2; i++) { | |
5c09d144 | 1632 | /* Note that the error flag is duplicated for |
1da177e4 LT |
1633 | every character received since we don't know |
1634 | which character it applied to */ | |
1635 | tty_insert_flip_char(tty, data[packet_offset+i], error_flag); | |
1636 | } | |
1637 | need_flip = 1; | |
1638 | } | |
1639 | ||
1640 | #ifdef NOT_CORRECT_BUT_KEEPING_IT_FOR_NOW | |
1641 | /* if a parity error is detected you get status packets forever | |
1642 | until a character is sent without a parity error. | |
1643 | This doesn't work well since the application receives a never | |
1644 | ending stream of bad data - even though new data hasn't been sent. | |
1645 | Therefore I (bill) have taken this out. | |
5c09d144 | 1646 | However - this might make sense for framing errors and so on |
1da177e4 LT |
1647 | so I am leaving the code in for now. |
1648 | */ | |
1649 | else { | |
1650 | if (error_flag != TTY_NORMAL){ | |
1651 | dbg("error_flag is not normal"); | |
1652 | /* In this case it is just status - if that is an error send a bad character */ | |
1653 | if(tty->flip.count >= TTY_FLIPBUF_SIZE) { | |
1654 | tty_flip_buffer_push(tty); | |
1655 | } | |
1656 | tty_insert_flip_char(tty, 0xff, error_flag); | |
1657 | need_flip = 1; | |
1658 | } | |
1659 | } | |
1660 | #endif | |
1661 | } /* "for(packet_offset=0..." */ | |
1662 | ||
1663 | /* Low latency */ | |
1664 | if (need_flip) { | |
1665 | tty_flip_buffer_push(tty); | |
1666 | } | |
1667 | ||
76854cea IA |
1668 | if (packet_offset < urb->actual_length) { |
1669 | /* not completely processed - record progress */ | |
1670 | priv->rx_processed = packet_offset; | |
1671 | dbg("%s - incomplete, %d bytes processed, %d remain", | |
441b62c1 | 1672 | __func__, packet_offset, |
76854cea IA |
1673 | urb->actual_length - packet_offset); |
1674 | /* check if we were throttled while processing */ | |
1675 | spin_lock_irqsave(&priv->rx_lock, flags); | |
1676 | if (priv->rx_flags & THROTTLED) { | |
1677 | priv->rx_flags |= ACTUALLY_THROTTLED; | |
1678 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
1679 | dbg("%s - deferring remainder until unthrottled", | |
441b62c1 | 1680 | __func__); |
76854cea IA |
1681 | return; |
1682 | } | |
1683 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
1684 | /* if the port is closed stop trying to read */ | |
1685 | if (port->open_count > 0){ | |
1686 | /* delay processing of remainder */ | |
1687 | schedule_delayed_work(&priv->rx_work, 1); | |
1688 | } else { | |
441b62c1 | 1689 | dbg("%s - port is closed", __func__); |
76854cea IA |
1690 | } |
1691 | return; | |
1692 | } | |
1693 | ||
1694 | /* urb is completely processed */ | |
1695 | priv->rx_processed = 0; | |
1696 | ||
1da177e4 LT |
1697 | /* if the port is closed stop trying to read */ |
1698 | if (port->open_count > 0){ | |
1699 | /* Continue trying to always read */ | |
5c09d144 | 1700 | usb_fill_bulk_urb(port->read_urb, port->serial->dev, |
1da177e4 LT |
1701 | usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress), |
1702 | port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length, | |
1703 | ftdi_read_bulk_callback, port); | |
1704 | ||
1705 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
1706 | if (result) | |
441b62c1 | 1707 | err("%s - failed resubmitting read urb, error %d", __func__, result); |
1da177e4 LT |
1708 | } |
1709 | ||
1710 | return; | |
1711 | } /* ftdi_process_read */ | |
1712 | ||
1713 | ||
1714 | static void ftdi_break_ctl( struct usb_serial_port *port, int break_state ) | |
1715 | { | |
1716 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
5c09d144 | 1717 | __u16 urb_value = 0; |
1da177e4 | 1718 | char buf[1]; |
5c09d144 | 1719 | |
1da177e4 LT |
1720 | /* break_state = -1 to turn on break, and 0 to turn off break */ |
1721 | /* see drivers/char/tty_io.c to see it used */ | |
1722 | /* last_set_data_urb_value NEVER has the break bit set in it */ | |
1723 | ||
1724 | if (break_state) { | |
1725 | urb_value = priv->last_set_data_urb_value | FTDI_SIO_SET_BREAK; | |
1726 | } else { | |
5c09d144 | 1727 | urb_value = priv->last_set_data_urb_value; |
1da177e4 LT |
1728 | } |
1729 | ||
5c09d144 | 1730 | |
1da177e4 | 1731 | if (usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0), |
5c09d144 | 1732 | FTDI_SIO_SET_DATA_REQUEST, |
1da177e4 LT |
1733 | FTDI_SIO_SET_DATA_REQUEST_TYPE, |
1734 | urb_value , priv->interface, | |
1735 | buf, 0, WDR_TIMEOUT) < 0) { | |
441b62c1 | 1736 | err("%s FAILED to enable/disable break state (state was %d)", __func__,break_state); |
5c09d144 | 1737 | } |
1da177e4 | 1738 | |
441b62c1 | 1739 | dbg("%s break state is %d - urb is %d", __func__,break_state, urb_value); |
5c09d144 | 1740 | |
1da177e4 LT |
1741 | } |
1742 | ||
1743 | ||
1744 | /* old_termios contains the original termios settings and tty->termios contains | |
1745 | * the new setting to be used | |
1746 | * WARNING: set_termios calls this with old_termios in kernel space | |
1747 | */ | |
1748 | ||
606d099c | 1749 | static void ftdi_set_termios (struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 LT |
1750 | { /* ftdi_termios */ |
1751 | struct usb_device *dev = port->serial->dev; | |
1da177e4 | 1752 | struct ftdi_private *priv = usb_get_serial_port_data(port); |
669a6db1 AC |
1753 | struct ktermios *termios = port->tty->termios; |
1754 | unsigned int cflag = termios->c_cflag; | |
1da177e4 LT |
1755 | __u16 urb_value; /* will hold the new flags */ |
1756 | char buf[1]; /* Perhaps I should dynamically alloc this? */ | |
5c09d144 | 1757 | |
1da177e4 | 1758 | // Added for xon/xoff support |
669a6db1 | 1759 | unsigned int iflag = termios->c_iflag; |
1da177e4 LT |
1760 | unsigned char vstop; |
1761 | unsigned char vstart; | |
5c09d144 | 1762 | |
441b62c1 | 1763 | dbg("%s", __func__); |
1da177e4 LT |
1764 | |
1765 | /* Force baud rate if this device requires it, unless it is set to B0. */ | |
669a6db1 | 1766 | if (priv->force_baud && ((termios->c_cflag & CBAUD) != B0)) { |
441b62c1 | 1767 | dbg("%s: forcing baud rate for this device", __func__); |
bd5e47cc AM |
1768 | tty_encode_baud_rate(port->tty, priv->force_baud, |
1769 | priv->force_baud); | |
1da177e4 LT |
1770 | } |
1771 | ||
1772 | /* Force RTS-CTS if this device requires it. */ | |
1773 | if (priv->force_rtscts) { | |
441b62c1 | 1774 | dbg("%s: forcing rtscts for this device", __func__); |
669a6db1 | 1775 | termios->c_cflag |= CRTSCTS; |
1da177e4 LT |
1776 | } |
1777 | ||
669a6db1 | 1778 | cflag = termios->c_cflag; |
1da177e4 | 1779 | |
5c09d144 DB |
1780 | /* FIXME -For this cut I don't care if the line is really changing or |
1781 | not - so just do the change regardless - should be able to | |
1da177e4 | 1782 | compare old_termios and tty->termios */ |
5c09d144 DB |
1783 | /* NOTE These routines can get interrupted by |
1784 | ftdi_sio_read_bulk_callback - need to examine what this | |
1da177e4 | 1785 | means - don't see any problems yet */ |
5c09d144 | 1786 | |
1da177e4 | 1787 | /* Set number of data bits, parity, stop bits */ |
5c09d144 | 1788 | |
669a6db1 AC |
1789 | termios->c_cflag &= ~CMSPAR; |
1790 | ||
1da177e4 LT |
1791 | urb_value = 0; |
1792 | urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 : | |
1793 | FTDI_SIO_SET_DATA_STOP_BITS_1); | |
5c09d144 DB |
1794 | urb_value |= (cflag & PARENB ? |
1795 | (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD : | |
1da177e4 LT |
1796 | FTDI_SIO_SET_DATA_PARITY_EVEN) : |
1797 | FTDI_SIO_SET_DATA_PARITY_NONE); | |
1798 | if (cflag & CSIZE) { | |
1799 | switch (cflag & CSIZE) { | |
1800 | case CS5: urb_value |= 5; dbg("Setting CS5"); break; | |
1801 | case CS6: urb_value |= 6; dbg("Setting CS6"); break; | |
1802 | case CS7: urb_value |= 7; dbg("Setting CS7"); break; | |
1803 | case CS8: urb_value |= 8; dbg("Setting CS8"); break; | |
1804 | default: | |
1805 | err("CSIZE was set but not CS5-CS8"); | |
1806 | } | |
1807 | } | |
1808 | ||
1809 | /* This is needed by the break command since it uses the same command - but is | |
1810 | * or'ed with this value */ | |
1811 | priv->last_set_data_urb_value = urb_value; | |
5c09d144 | 1812 | |
1da177e4 | 1813 | if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
5c09d144 | 1814 | FTDI_SIO_SET_DATA_REQUEST, |
1da177e4 LT |
1815 | FTDI_SIO_SET_DATA_REQUEST_TYPE, |
1816 | urb_value , priv->interface, | |
279e1545 | 1817 | buf, 0, WDR_SHORT_TIMEOUT) < 0) { |
441b62c1 | 1818 | err("%s FAILED to set databits/stopbits/parity", __func__); |
5c09d144 | 1819 | } |
1da177e4 LT |
1820 | |
1821 | /* Now do the baudrate */ | |
1822 | if ((cflag & CBAUD) == B0 ) { | |
1823 | /* Disable flow control */ | |
1824 | if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
5c09d144 | 1825 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, |
1da177e4 | 1826 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, |
5c09d144 | 1827 | 0, priv->interface, |
1da177e4 | 1828 | buf, 0, WDR_TIMEOUT) < 0) { |
441b62c1 | 1829 | err("%s error from disable flowcontrol urb", __func__); |
5c09d144 | 1830 | } |
1da177e4 | 1831 | /* Drop RTS and DTR */ |
74ede0ff | 1832 | clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); |
1da177e4 LT |
1833 | } else { |
1834 | /* set the baudrate determined before */ | |
1835 | if (change_speed(port)) { | |
441b62c1 | 1836 | err("%s urb failed to set baudrate", __func__); |
72a755fc PF |
1837 | } |
1838 | /* Ensure RTS and DTR are raised when baudrate changed from 0 */ | |
57845bd1 | 1839 | if (!old_termios || (old_termios->c_cflag & CBAUD) == B0) { |
72a755fc | 1840 | set_mctrl(port, TIOCM_DTR | TIOCM_RTS); |
1da177e4 | 1841 | } |
1da177e4 LT |
1842 | } |
1843 | ||
1844 | /* Set flow control */ | |
1845 | /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */ | |
1846 | if (cflag & CRTSCTS) { | |
441b62c1 | 1847 | dbg("%s Setting to CRTSCTS flow control", __func__); |
5c09d144 | 1848 | if (usb_control_msg(dev, |
1da177e4 | 1849 | usb_sndctrlpipe(dev, 0), |
5c09d144 | 1850 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, |
1da177e4 LT |
1851 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, |
1852 | 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface), | |
1853 | buf, 0, WDR_TIMEOUT) < 0) { | |
1854 | err("urb failed to set to rts/cts flow control"); | |
5c09d144 DB |
1855 | } |
1856 | ||
1857 | } else { | |
1da177e4 LT |
1858 | /* |
1859 | * Xon/Xoff code | |
1860 | * | |
1861 | * Check the IXOFF status in the iflag component of the termios structure | |
1862 | * if IXOFF is not set, the pre-xon/xoff code is executed. | |
1863 | */ | |
1864 | if (iflag & IXOFF) { | |
441b62c1 | 1865 | dbg("%s request to enable xonxoff iflag=%04x",__func__,iflag); |
1da177e4 LT |
1866 | // Try to enable the XON/XOFF on the ftdi_sio |
1867 | // Set the vstart and vstop -- could have been done up above where | |
1868 | // a lot of other dereferencing is done but that would be very | |
1869 | // inefficient as vstart and vstop are not always needed | |
669a6db1 AC |
1870 | vstart = termios->c_cc[VSTART]; |
1871 | vstop = termios->c_cc[VSTOP]; | |
1da177e4 LT |
1872 | urb_value=(vstop << 8) | (vstart); |
1873 | ||
1874 | if (usb_control_msg(dev, | |
1875 | usb_sndctrlpipe(dev, 0), | |
1876 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, | |
1877 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, | |
1878 | urb_value , (FTDI_SIO_XON_XOFF_HS | |
1879 | | priv->interface), | |
1880 | buf, 0, WDR_TIMEOUT) < 0) { | |
1881 | err("urb failed to set to xon/xoff flow control"); | |
1882 | } | |
1883 | } else { | |
1884 | /* else clause to only run if cfag ! CRTSCTS and iflag ! XOFF */ | |
1885 | /* CHECKME Assuming XON/XOFF handled by tty stack - not by device */ | |
441b62c1 | 1886 | dbg("%s Turning off hardware flow control", __func__); |
5c09d144 | 1887 | if (usb_control_msg(dev, |
1da177e4 | 1888 | usb_sndctrlpipe(dev, 0), |
5c09d144 | 1889 | FTDI_SIO_SET_FLOW_CTRL_REQUEST, |
1da177e4 | 1890 | FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, |
5c09d144 | 1891 | 0, priv->interface, |
1da177e4 LT |
1892 | buf, 0, WDR_TIMEOUT) < 0) { |
1893 | err("urb failed to clear flow control"); | |
5c09d144 | 1894 | } |
1da177e4 | 1895 | } |
5c09d144 | 1896 | |
1da177e4 LT |
1897 | } |
1898 | return; | |
1899 | } /* ftdi_termios */ | |
1900 | ||
1901 | ||
1902 | static int ftdi_tiocmget (struct usb_serial_port *port, struct file *file) | |
1903 | { | |
1904 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
1905 | unsigned char buf[2]; | |
1906 | int ret; | |
1907 | ||
441b62c1 | 1908 | dbg("%s TIOCMGET", __func__); |
1da177e4 LT |
1909 | switch (priv->chip_type) { |
1910 | case SIO: | |
1911 | /* Request the status from the device */ | |
5c09d144 | 1912 | if ((ret = usb_control_msg(port->serial->dev, |
1da177e4 | 1913 | usb_rcvctrlpipe(port->serial->dev, 0), |
5c09d144 | 1914 | FTDI_SIO_GET_MODEM_STATUS_REQUEST, |
1da177e4 | 1915 | FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE, |
5c09d144 | 1916 | 0, 0, |
1da177e4 | 1917 | buf, 1, WDR_TIMEOUT)) < 0 ) { |
441b62c1 | 1918 | err("%s Could not get modem status of device - err: %d", __func__, |
1da177e4 LT |
1919 | ret); |
1920 | return(ret); | |
1921 | } | |
1922 | break; | |
1923 | case FT8U232AM: | |
1924 | case FT232BM: | |
1925 | case FT2232C: | |
ed6e5282 | 1926 | case FT232RL: |
1da177e4 LT |
1927 | /* the 8U232AM returns a two byte value (the sio is a 1 byte value) - in the same |
1928 | format as the data returned from the in point */ | |
5c09d144 | 1929 | if ((ret = usb_control_msg(port->serial->dev, |
1da177e4 | 1930 | usb_rcvctrlpipe(port->serial->dev, 0), |
5c09d144 | 1931 | FTDI_SIO_GET_MODEM_STATUS_REQUEST, |
1da177e4 | 1932 | FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE, |
5c09d144 | 1933 | 0, priv->interface, |
1da177e4 | 1934 | buf, 2, WDR_TIMEOUT)) < 0 ) { |
441b62c1 | 1935 | err("%s Could not get modem status of device - err: %d", __func__, |
1da177e4 LT |
1936 | ret); |
1937 | return(ret); | |
1938 | } | |
1939 | break; | |
1940 | default: | |
1941 | return -EFAULT; | |
1942 | break; | |
1943 | } | |
5c09d144 | 1944 | |
1da177e4 LT |
1945 | return (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) | |
1946 | (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) | | |
1947 | (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) | | |
1948 | (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0) | | |
5c09d144 | 1949 | priv->last_dtr_rts; |
1da177e4 LT |
1950 | } |
1951 | ||
1952 | static int ftdi_tiocmset(struct usb_serial_port *port, struct file * file, unsigned int set, unsigned int clear) | |
1953 | { | |
441b62c1 | 1954 | dbg("%s TIOCMSET", __func__); |
74ede0ff | 1955 | return update_mctrl(port, set, clear); |
1da177e4 LT |
1956 | } |
1957 | ||
1958 | ||
1959 | static int ftdi_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) | |
1960 | { | |
1961 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
1962 | ||
441b62c1 | 1963 | dbg("%s cmd 0x%04x", __func__, cmd); |
1da177e4 LT |
1964 | |
1965 | /* Based on code from acm.c and others */ | |
1966 | switch (cmd) { | |
1967 | ||
1da177e4 LT |
1968 | case TIOCGSERIAL: /* gets serial port data */ |
1969 | return get_serial_info(port, (struct serial_struct __user *) arg); | |
1970 | ||
1971 | case TIOCSSERIAL: /* sets serial port data */ | |
1972 | return set_serial_info(port, (struct serial_struct __user *) arg); | |
1973 | ||
1974 | /* | |
1975 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
1976 | * - mask passed in arg for lines of interest | |
1977 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
1978 | * Caller should use TIOCGICOUNT to see which one it was. | |
1979 | * | |
1980 | * This code is borrowed from linux/drivers/char/serial.c | |
1981 | */ | |
1982 | case TIOCMIWAIT: | |
1983 | while (priv != NULL) { | |
1984 | interruptible_sleep_on(&priv->delta_msr_wait); | |
1985 | /* see if a signal did it */ | |
1986 | if (signal_pending(current)) | |
1987 | return -ERESTARTSYS; | |
1988 | else { | |
1989 | char diff = priv->diff_status; | |
1990 | ||
1991 | if (diff == 0) { | |
1992 | return -EIO; /* no change => error */ | |
1993 | } | |
1994 | ||
1995 | /* Consume all events */ | |
1996 | priv->diff_status = 0; | |
1997 | ||
1998 | /* Return 0 if caller wanted to know about these bits */ | |
1999 | if ( ((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) || | |
2000 | ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) || | |
2001 | ((arg & TIOCM_CD) && (diff & FTDI_RS0_RLSD)) || | |
2002 | ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS)) ) { | |
2003 | return 0; | |
2004 | } | |
2005 | /* | |
2006 | * Otherwise caller can't care less about what happened, | |
2007 | * and so we continue to wait for more events. | |
2008 | */ | |
2009 | } | |
2010 | } | |
2011 | return(0); | |
2012 | break; | |
2013 | default: | |
2014 | break; | |
5c09d144 | 2015 | |
1da177e4 LT |
2016 | } |
2017 | ||
2018 | ||
5c09d144 | 2019 | /* This is not necessarily an error - turns out the higher layers will do |
1da177e4 LT |
2020 | * some ioctls itself (see comment above) |
2021 | */ | |
441b62c1 | 2022 | dbg("%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h", __func__, cmd); |
1da177e4 LT |
2023 | |
2024 | return(-ENOIOCTLCMD); | |
2025 | } /* ftdi_ioctl */ | |
2026 | ||
2027 | ||
2028 | static void ftdi_throttle (struct usb_serial_port *port) | |
2029 | { | |
2030 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
2031 | unsigned long flags; | |
2032 | ||
441b62c1 | 2033 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2034 | |
2035 | spin_lock_irqsave(&priv->rx_lock, flags); | |
2036 | priv->rx_flags |= THROTTLED; | |
2037 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
2038 | } | |
2039 | ||
2040 | ||
2041 | static void ftdi_unthrottle (struct usb_serial_port *port) | |
2042 | { | |
2043 | struct ftdi_private *priv = usb_get_serial_port_data(port); | |
2044 | int actually_throttled; | |
2045 | unsigned long flags; | |
2046 | ||
441b62c1 | 2047 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
2048 | |
2049 | spin_lock_irqsave(&priv->rx_lock, flags); | |
2050 | actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED; | |
2051 | priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED); | |
2052 | spin_unlock_irqrestore(&priv->rx_lock, flags); | |
2053 | ||
2054 | if (actually_throttled) | |
c4028958 | 2055 | schedule_delayed_work(&priv->rx_work, 0); |
1da177e4 LT |
2056 | } |
2057 | ||
2058 | static int __init ftdi_init (void) | |
2059 | { | |
2060 | int retval; | |
2061 | ||
441b62c1 | 2062 | dbg("%s", __func__); |
fdcb0a0f IA |
2063 | if (vendor > 0 && product > 0) { |
2064 | /* Add user specified VID/PID to reserved element of table. */ | |
2065 | int i; | |
2066 | for (i = 0; id_table_combined[i].idVendor; i++) | |
2067 | ; | |
2068 | id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
2069 | id_table_combined[i].idVendor = vendor; | |
2070 | id_table_combined[i].idProduct = product; | |
2071 | } | |
8f977e42 | 2072 | retval = usb_serial_register(&ftdi_sio_device); |
1da177e4 | 2073 | if (retval) |
8f977e42 | 2074 | goto failed_sio_register; |
1da177e4 | 2075 | retval = usb_register(&ftdi_driver); |
5c09d144 | 2076 | if (retval) |
1da177e4 LT |
2077 | goto failed_usb_register; |
2078 | ||
2079 | info(DRIVER_VERSION ":" DRIVER_DESC); | |
2080 | return 0; | |
2081 | failed_usb_register: | |
8f977e42 IA |
2082 | usb_serial_deregister(&ftdi_sio_device); |
2083 | failed_sio_register: | |
1da177e4 LT |
2084 | return retval; |
2085 | } | |
2086 | ||
2087 | ||
2088 | static void __exit ftdi_exit (void) | |
2089 | { | |
2090 | ||
441b62c1 | 2091 | dbg("%s", __func__); |
1da177e4 LT |
2092 | |
2093 | usb_deregister (&ftdi_driver); | |
8f977e42 | 2094 | usb_serial_deregister (&ftdi_sio_device); |
1da177e4 LT |
2095 | |
2096 | } | |
2097 | ||
2098 | ||
2099 | module_init(ftdi_init); | |
2100 | module_exit(ftdi_exit); | |
2101 | ||
2102 | MODULE_AUTHOR( DRIVER_AUTHOR ); | |
2103 | MODULE_DESCRIPTION( DRIVER_DESC ); | |
2104 | MODULE_LICENSE("GPL"); | |
2105 | ||
2106 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
2107 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
fdcb0a0f IA |
2108 | module_param(vendor, ushort, 0); |
2109 | MODULE_PARM_DESC(vendor, "User specified vendor ID (default=" | |
2110 | __MODULE_STRING(FTDI_VID)")"); | |
2111 | module_param(product, ushort, 0); | |
2112 | MODULE_PARM_DESC(vendor, "User specified product ID"); | |
1da177e4 | 2113 |