Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Garmin GPS driver | |
3 | * | |
b4026c45 | 4 | * Copyright (C) 2006-2011 Hermann Kneissel herkne@gmx.de |
1da177e4 LT |
5 | * |
6 | * The latest version of the driver can be found at | |
7 | * http://sourceforge.net/projects/garmin-gps/ | |
8 | * | |
9 | * This driver has been derived from v2.1 of the visor driver. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111 USA | |
24 | */ | |
25 | ||
1da177e4 LT |
26 | #include <linux/kernel.h> |
27 | #include <linux/errno.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/timer.h> | |
31 | #include <linux/tty.h> | |
32 | #include <linux/tty_driver.h> | |
33 | #include <linux/tty_flip.h> | |
34 | #include <linux/module.h> | |
35 | #include <linux/spinlock.h> | |
af6d780b | 36 | #include <linux/uaccess.h> |
60063497 | 37 | #include <linux/atomic.h> |
1da177e4 | 38 | #include <linux/usb.h> |
a969888c | 39 | #include <linux/usb/serial.h> |
1da177e4 LT |
40 | |
41 | /* the mode to be set when the port ist opened */ | |
42 | static int initial_mode = 1; | |
43 | ||
1da177e4 LT |
44 | #define GARMIN_VENDOR_ID 0x091E |
45 | ||
46 | /* | |
47 | * Version Information | |
48 | */ | |
49 | ||
50 | #define VERSION_MAJOR 0 | |
b4026c45 | 51 | #define VERSION_MINOR 36 |
1da177e4 LT |
52 | |
53 | #define _STR(s) #s | |
af6d780b | 54 | #define _DRIVER_VERSION(a, b) "v" _STR(a) "." _STR(b) |
1da177e4 LT |
55 | #define DRIVER_VERSION _DRIVER_VERSION(VERSION_MAJOR, VERSION_MINOR) |
56 | #define DRIVER_AUTHOR "hermann kneissel" | |
57 | #define DRIVER_DESC "garmin gps driver" | |
58 | ||
59 | /* error codes returned by the driver */ | |
60 | #define EINVPKT 1000 /* invalid packet structure */ | |
61 | ||
62 | ||
af6d780b | 63 | /* size of the header of a packet using the usb protocol */ |
1da177e4 LT |
64 | #define GARMIN_PKTHDR_LENGTH 12 |
65 | ||
af6d780b AC |
66 | /* max. possible size of a packet using the serial protocol */ |
67 | #define MAX_SERIAL_PKT_SIZ (3 + 255 + 3) | |
1da177e4 | 68 | |
af6d780b AC |
69 | /* max. possible size of a packet with worst case stuffing */ |
70 | #define MAX_SERIAL_PKT_SIZ_STUFFED (MAX_SERIAL_PKT_SIZ + 256) | |
1da177e4 | 71 | |
af6d780b AC |
72 | /* size of a buffer able to hold a complete (no stuffing) packet |
73 | * (the document protocol does not contain packets with a larger | |
74 | * size, but in theory a packet may be 64k+12 bytes - if in | |
75 | * later protocol versions larger packet sizes occur, this value | |
76 | * should be increased accordingly, so the input buffer is always | |
77 | * large enough the store a complete packet inclusive header) */ | |
78 | #define GPS_IN_BUFSIZ (GARMIN_PKTHDR_LENGTH+MAX_SERIAL_PKT_SIZ) | |
1da177e4 | 79 | |
af6d780b AC |
80 | /* size of a buffer able to hold a complete (incl. stuffing) packet */ |
81 | #define GPS_OUT_BUFSIZ (GARMIN_PKTHDR_LENGTH+MAX_SERIAL_PKT_SIZ_STUFFED) | |
1da177e4 | 82 | |
af6d780b AC |
83 | /* where to place the packet id of a serial packet, so we can |
84 | * prepend the usb-packet header without the need to move the | |
85 | * packets data */ | |
1da177e4 LT |
86 | #define GSP_INITIAL_OFFSET (GARMIN_PKTHDR_LENGTH-2) |
87 | ||
af6d780b | 88 | /* max. size of incoming private packets (header+1 param) */ |
1da177e4 LT |
89 | #define PRIVPKTSIZ (GARMIN_PKTHDR_LENGTH+4) |
90 | ||
91 | #define GARMIN_LAYERID_TRANSPORT 0 | |
92 | #define GARMIN_LAYERID_APPL 20 | |
af6d780b | 93 | /* our own layer-id to use for some control mechanisms */ |
1da177e4 LT |
94 | #define GARMIN_LAYERID_PRIVATE 0x01106E4B |
95 | ||
96 | #define GARMIN_PKTID_PVT_DATA 51 | |
97 | #define GARMIN_PKTID_L001_COMMAND_DATA 10 | |
98 | ||
99 | #define CMND_ABORT_TRANSFER 0 | |
100 | ||
af6d780b | 101 | /* packet ids used in private layer */ |
1da177e4 LT |
102 | #define PRIV_PKTID_SET_DEBUG 1 |
103 | #define PRIV_PKTID_SET_MODE 2 | |
104 | #define PRIV_PKTID_INFO_REQ 3 | |
105 | #define PRIV_PKTID_INFO_RESP 4 | |
106 | #define PRIV_PKTID_RESET_REQ 5 | |
107 | #define PRIV_PKTID_SET_DEF_MODE 6 | |
108 | ||
109 | ||
110 | #define ETX 0x03 | |
111 | #define DLE 0x10 | |
112 | #define ACK 0x06 | |
113 | #define NAK 0x15 | |
114 | ||
115 | /* structure used to queue incoming packets */ | |
116 | struct garmin_packet { | |
117 | struct list_head list; | |
118 | int seq; | |
af6d780b AC |
119 | /* the real size of the data array, always > 0 */ |
120 | int size; | |
1da177e4 LT |
121 | __u8 data[1]; |
122 | }; | |
123 | ||
124 | /* structure used to keep the current state of the driver */ | |
125 | struct garmin_data { | |
126 | __u8 state; | |
127 | __u16 flags; | |
128 | __u8 mode; | |
1da177e4 LT |
129 | __u8 count; |
130 | __u8 pkt_id; | |
131 | __u32 serial_num; | |
132 | struct timer_list timer; | |
133 | struct usb_serial_port *port; | |
134 | int seq_counter; | |
135 | int insize; | |
136 | int outsize; | |
137 | __u8 inbuffer [GPS_IN_BUFSIZ]; /* tty -> usb */ | |
138 | __u8 outbuffer[GPS_OUT_BUFSIZ]; /* usb -> tty */ | |
139 | __u8 privpkt[4*6]; | |
140 | spinlock_t lock; | |
141 | struct list_head pktlist; | |
142 | }; | |
143 | ||
144 | ||
145 | #define STATE_NEW 0 | |
146 | #define STATE_INITIAL_DELAY 1 | |
147 | #define STATE_TIMEOUT 2 | |
148 | #define STATE_SESSION_REQ1 3 | |
149 | #define STATE_SESSION_REQ2 4 | |
150 | #define STATE_ACTIVE 5 | |
151 | ||
152 | #define STATE_RESET 8 | |
153 | #define STATE_DISCONNECTED 9 | |
154 | #define STATE_WAIT_TTY_ACK 10 | |
155 | #define STATE_GSP_WAIT_DATA 11 | |
156 | ||
157 | #define MODE_NATIVE 0 | |
158 | #define MODE_GARMIN_SERIAL 1 | |
159 | ||
af6d780b | 160 | /* Flags used in garmin_data.flags: */ |
1da177e4 LT |
161 | #define FLAGS_SESSION_REPLY_MASK 0x00C0 |
162 | #define FLAGS_SESSION_REPLY1_SEEN 0x0080 | |
163 | #define FLAGS_SESSION_REPLY2_SEEN 0x0040 | |
164 | #define FLAGS_BULK_IN_ACTIVE 0x0020 | |
eb6d8c2d HK |
165 | #define FLAGS_BULK_IN_RESTART 0x0010 |
166 | #define FLAGS_THROTTLED 0x0008 | |
b4072f46 HK |
167 | #define APP_REQ_SEEN 0x0004 |
168 | #define APP_RESP_SEEN 0x0002 | |
1da177e4 LT |
169 | #define CLEAR_HALT_REQUIRED 0x0001 |
170 | ||
171 | #define FLAGS_QUEUING 0x0100 | |
1da177e4 LT |
172 | #define FLAGS_DROP_DATA 0x0800 |
173 | ||
174 | #define FLAGS_GSP_SKIP 0x1000 | |
175 | #define FLAGS_GSP_DLESEEN 0x2000 | |
176 | ||
177 | ||
178 | ||
179 | ||
180 | ||
181 | ||
182 | /* function prototypes */ | |
b4072f46 HK |
183 | static int gsp_next_packet(struct garmin_data *garmin_data_p); |
184 | static int garmin_write_bulk(struct usb_serial_port *port, | |
468d1362 HK |
185 | const unsigned char *buf, int count, |
186 | int dismiss_ack); | |
1da177e4 LT |
187 | |
188 | /* some special packets to be send or received */ | |
189 | static unsigned char const GARMIN_START_SESSION_REQ[] | |
190 | = { 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0 }; | |
1da177e4 LT |
191 | static unsigned char const GARMIN_START_SESSION_REPLY[] |
192 | = { 0, 0, 0, 0, 6, 0, 0, 0, 4, 0, 0, 0 }; | |
1da177e4 LT |
193 | static unsigned char const GARMIN_BULK_IN_AVAIL_REPLY[] |
194 | = { 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0 }; | |
195 | static unsigned char const GARMIN_APP_LAYER_REPLY[] | |
196 | = { 0x14, 0, 0, 0 }; | |
197 | static unsigned char const GARMIN_START_PVT_REQ[] | |
198 | = { 20, 0, 0, 0, 10, 0, 0, 0, 2, 0, 0, 0, 49, 0 }; | |
199 | static unsigned char const GARMIN_STOP_PVT_REQ[] | |
200 | = { 20, 0, 0, 0, 10, 0, 0, 0, 2, 0, 0, 0, 50, 0 }; | |
201 | static unsigned char const GARMIN_STOP_TRANSFER_REQ[] | |
202 | = { 20, 0, 0, 0, 10, 0, 0, 0, 2, 0, 0, 0, 0, 0 }; | |
203 | static unsigned char const GARMIN_STOP_TRANSFER_REQ_V2[] | |
204 | = { 20, 0, 0, 0, 10, 0, 0, 0, 1, 0, 0, 0, 0 }; | |
205 | static unsigned char const PRIVATE_REQ[] | |
206 | = { 0x4B, 0x6E, 0x10, 0x01, 0xFF, 0, 0, 0, 0xFF, 0, 0, 0 }; | |
207 | ||
208 | ||
209 | ||
7d40d7e8 | 210 | static const struct usb_device_id id_table[] = { |
af6d780b AC |
211 | /* the same device id seems to be used by all |
212 | usb enabled GPS devices */ | |
213 | { USB_DEVICE(GARMIN_VENDOR_ID, 3) }, | |
1da177e4 LT |
214 | { } /* Terminating entry */ |
215 | }; | |
af6d780b | 216 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 217 | |
1da177e4 | 218 | |
1da177e4 LT |
219 | static inline int getLayerId(const __u8 *usbPacket) |
220 | { | |
221 | return __le32_to_cpup((__le32 *)(usbPacket)); | |
222 | } | |
223 | ||
224 | static inline int getPacketId(const __u8 *usbPacket) | |
225 | { | |
226 | return __le32_to_cpup((__le32 *)(usbPacket+4)); | |
227 | } | |
228 | ||
229 | static inline int getDataLength(const __u8 *usbPacket) | |
230 | { | |
231 | return __le32_to_cpup((__le32 *)(usbPacket+8)); | |
232 | } | |
233 | ||
234 | ||
235 | /* | |
236 | * check if the usb-packet in buf contains an abort-transfer command. | |
237 | * (if yes, all queued data will be dropped) | |
238 | */ | |
239 | static inline int isAbortTrfCmnd(const unsigned char *buf) | |
240 | { | |
af6d780b AC |
241 | if (0 == memcmp(buf, GARMIN_STOP_TRANSFER_REQ, |
242 | sizeof(GARMIN_STOP_TRANSFER_REQ)) || | |
243 | 0 == memcmp(buf, GARMIN_STOP_TRANSFER_REQ_V2, | |
244 | sizeof(GARMIN_STOP_TRANSFER_REQ_V2))) | |
1da177e4 LT |
245 | return 1; |
246 | else | |
247 | return 0; | |
248 | } | |
249 | ||
250 | ||
251 | ||
252 | static void send_to_tty(struct usb_serial_port *port, | |
eb6d8c2d | 253 | char *data, unsigned int actual_length) |
1da177e4 | 254 | { |
2e124b4a | 255 | if (actual_length) { |
59d33f2f | 256 | usb_serial_debug_data(&port->dev, __func__, actual_length, data); |
05c7cd39 | 257 | tty_insert_flip_string(&port->port, data, actual_length); |
2e124b4a | 258 | tty_flip_buffer_push(&port->port); |
1da177e4 LT |
259 | } |
260 | } | |
261 | ||
262 | ||
263 | /****************************************************************************** | |
264 | * packet queue handling | |
265 | ******************************************************************************/ | |
266 | ||
267 | /* | |
268 | * queue a received (usb-)packet for later processing | |
269 | */ | |
af6d780b | 270 | static int pkt_add(struct garmin_data *garmin_data_p, |
eb6d8c2d | 271 | unsigned char *data, unsigned int data_length) |
1da177e4 | 272 | { |
eb6d8c2d | 273 | int state = 0; |
1da177e4 LT |
274 | int result = 0; |
275 | unsigned long flags; | |
276 | struct garmin_packet *pkt; | |
277 | ||
278 | /* process only packets containg data ... */ | |
279 | if (data_length) { | |
1da177e4 | 280 | pkt = kmalloc(sizeof(struct garmin_packet)+data_length, |
af6d780b | 281 | GFP_ATOMIC); |
1da177e4 LT |
282 | if (pkt == NULL) { |
283 | dev_err(&garmin_data_p->port->dev, "out of memory\n"); | |
284 | return 0; | |
285 | } | |
286 | pkt->size = data_length; | |
287 | memcpy(pkt->data, data, data_length); | |
288 | ||
289 | spin_lock_irqsave(&garmin_data_p->lock, flags); | |
eb6d8c2d | 290 | garmin_data_p->flags |= FLAGS_QUEUING; |
1da177e4 LT |
291 | result = list_empty(&garmin_data_p->pktlist); |
292 | pkt->seq = garmin_data_p->seq_counter++; | |
293 | list_add_tail(&pkt->list, &garmin_data_p->pktlist); | |
eb6d8c2d | 294 | state = garmin_data_p->state; |
1da177e4 LT |
295 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
296 | ||
7065e826 GKH |
297 | dev_dbg(&garmin_data_p->port->dev, |
298 | "%s - added: pkt: %d - %d bytes\n", __func__, | |
299 | pkt->seq, data_length); | |
b4072f46 | 300 | |
1da177e4 | 301 | /* in serial mode, if someone is waiting for data from |
b4072f46 | 302 | the device, convert and send the next packet to tty. */ |
af6d780b | 303 | if (result && (state == STATE_GSP_WAIT_DATA)) |
1da177e4 | 304 | gsp_next_packet(garmin_data_p); |
1da177e4 LT |
305 | } |
306 | return result; | |
307 | } | |
308 | ||
309 | ||
310 | /* get the next pending packet */ | |
af6d780b | 311 | static struct garmin_packet *pkt_pop(struct garmin_data *garmin_data_p) |
1da177e4 LT |
312 | { |
313 | unsigned long flags; | |
314 | struct garmin_packet *result = NULL; | |
315 | ||
316 | spin_lock_irqsave(&garmin_data_p->lock, flags); | |
317 | if (!list_empty(&garmin_data_p->pktlist)) { | |
318 | result = (struct garmin_packet *)garmin_data_p->pktlist.next; | |
319 | list_del(&result->list); | |
320 | } | |
321 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
322 | return result; | |
323 | } | |
324 | ||
325 | ||
326 | /* free up all queued data */ | |
af6d780b | 327 | static void pkt_clear(struct garmin_data *garmin_data_p) |
1da177e4 LT |
328 | { |
329 | unsigned long flags; | |
330 | struct garmin_packet *result = NULL; | |
331 | ||
1da177e4 LT |
332 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
333 | while (!list_empty(&garmin_data_p->pktlist)) { | |
334 | result = (struct garmin_packet *)garmin_data_p->pktlist.next; | |
335 | list_del(&result->list); | |
336 | kfree(result); | |
337 | } | |
338 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
339 | } | |
340 | ||
341 | ||
342 | /****************************************************************************** | |
343 | * garmin serial protocol handling handling | |
344 | ******************************************************************************/ | |
345 | ||
346 | /* send an ack packet back to the tty */ | |
af6d780b | 347 | static int gsp_send_ack(struct garmin_data *garmin_data_p, __u8 pkt_id) |
1da177e4 LT |
348 | { |
349 | __u8 pkt[10]; | |
eb6d8c2d HK |
350 | __u8 cksum = 0; |
351 | __u8 *ptr = pkt; | |
352 | unsigned l = 0; | |
1da177e4 | 353 | |
7065e826 GKH |
354 | dev_dbg(&garmin_data_p->port->dev, "%s - pkt-id: 0x%X.\n", __func__, |
355 | 0xFF & pkt_id); | |
1da177e4 LT |
356 | |
357 | *ptr++ = DLE; | |
358 | *ptr++ = ACK; | |
359 | cksum += ACK; | |
360 | ||
361 | *ptr++ = 2; | |
362 | cksum += 2; | |
363 | ||
364 | *ptr++ = pkt_id; | |
365 | cksum += pkt_id; | |
366 | ||
af6d780b | 367 | if (pkt_id == DLE) |
1da177e4 | 368 | *ptr++ = DLE; |
1da177e4 LT |
369 | |
370 | *ptr++ = 0; | |
371 | *ptr++ = 0xFF & (-cksum); | |
372 | *ptr++ = DLE; | |
373 | *ptr++ = ETX; | |
374 | ||
375 | l = ptr-pkt; | |
376 | ||
377 | send_to_tty(garmin_data_p->port, pkt, l); | |
378 | return 0; | |
379 | } | |
380 | ||
381 | ||
382 | ||
383 | /* | |
384 | * called for a complete packet received from tty layer | |
385 | * | |
b4072f46 | 386 | * the complete packet (pktid ... cksum) is in garmin_data_p->inbuf starting |
1da177e4 LT |
387 | * at GSP_INITIAL_OFFSET. |
388 | * | |
389 | * count - number of bytes in the input buffer including space reserved for | |
af6d780b | 390 | * the usb header: GSP_INITIAL_OFFSET + number of bytes in packet |
1da177e4 LT |
391 | * (including pkt-id, data-length a. cksum) |
392 | */ | |
af6d780b | 393 | static int gsp_rec_packet(struct garmin_data *garmin_data_p, int count) |
1da177e4 | 394 | { |
7065e826 | 395 | struct device *dev = &garmin_data_p->port->dev; |
b4026c45 | 396 | unsigned long flags; |
af6d780b | 397 | const __u8 *recpkt = garmin_data_p->inbuffer+GSP_INITIAL_OFFSET; |
eb6d8c2d | 398 | __le32 *usbdata = (__le32 *) garmin_data_p->inbuffer; |
1da177e4 LT |
399 | int cksum = 0; |
400 | int n = 0; | |
401 | int pktid = recpkt[0]; | |
402 | int size = recpkt[1]; | |
403 | ||
59d33f2f GKH |
404 | usb_serial_debug_data(&garmin_data_p->port->dev, __func__, |
405 | count-GSP_INITIAL_OFFSET, recpkt); | |
1da177e4 LT |
406 | |
407 | if (size != (count-GSP_INITIAL_OFFSET-3)) { | |
7065e826 | 408 | dev_dbg(dev, "%s - invalid size, expected %d bytes, got %d\n", |
441b62c1 | 409 | __func__, size, (count-GSP_INITIAL_OFFSET-3)); |
1da177e4 LT |
410 | return -EINVPKT; |
411 | } | |
412 | ||
413 | cksum += *recpkt++; | |
414 | cksum += *recpkt++; | |
415 | ||
af6d780b AC |
416 | /* sanity check, remove after test ... */ |
417 | if ((__u8 *)&(usbdata[3]) != recpkt) { | |
7065e826 GKH |
418 | dev_dbg(dev, "%s - ptr mismatch %p - %p\n", __func__, |
419 | &(usbdata[4]), recpkt); | |
1da177e4 LT |
420 | return -EINVPKT; |
421 | } | |
422 | ||
423 | while (n < size) { | |
424 | cksum += *recpkt++; | |
425 | n++; | |
426 | } | |
427 | ||
eb6d8c2d | 428 | if ((0xff & (cksum + *recpkt)) != 0) { |
7065e826 | 429 | dev_dbg(dev, "%s - invalid checksum, expected %02x, got %02x\n", |
441b62c1 | 430 | __func__, 0xff & -cksum, 0xff & *recpkt); |
eb6d8c2d HK |
431 | return -EINVPKT; |
432 | } | |
1da177e4 LT |
433 | |
434 | usbdata[0] = __cpu_to_le32(GARMIN_LAYERID_APPL); | |
435 | usbdata[1] = __cpu_to_le32(pktid); | |
436 | usbdata[2] = __cpu_to_le32(size); | |
437 | ||
af6d780b | 438 | garmin_write_bulk(garmin_data_p->port, garmin_data_p->inbuffer, |
468d1362 | 439 | GARMIN_PKTHDR_LENGTH+size, 0); |
1da177e4 LT |
440 | |
441 | /* if this was an abort-transfer command, flush all | |
442 | queued data. */ | |
443 | if (isAbortTrfCmnd(garmin_data_p->inbuffer)) { | |
b4026c45 | 444 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1da177e4 | 445 | garmin_data_p->flags |= FLAGS_DROP_DATA; |
b4026c45 | 446 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
1da177e4 LT |
447 | pkt_clear(garmin_data_p); |
448 | } | |
449 | ||
450 | return count; | |
451 | } | |
452 | ||
453 | ||
454 | ||
455 | /* | |
456 | * Called for data received from tty | |
457 | * | |
458 | * buf contains the data read, it may span more than one packet or even | |
459 | * incomplete packets | |
460 | * | |
461 | * input record should be a serial-record, but it may not be complete. | |
462 | * Copy it into our local buffer, until an etx is seen (or an error | |
463 | * occurs). | |
464 | * Once the record is complete, convert into a usb packet and send it | |
465 | * to the bulk pipe, send an ack back to the tty. | |
466 | * | |
467 | * If the input is an ack, just send the last queued packet to the | |
468 | * tty layer. | |
469 | * | |
470 | * if the input is an abort command, drop all queued data. | |
471 | */ | |
472 | ||
af6d780b | 473 | static int gsp_receive(struct garmin_data *garmin_data_p, |
eb6d8c2d | 474 | const unsigned char *buf, int count) |
1da177e4 | 475 | { |
7065e826 | 476 | struct device *dev = &garmin_data_p->port->dev; |
eb6d8c2d | 477 | unsigned long flags; |
1da177e4 LT |
478 | int offs = 0; |
479 | int ack_or_nak_seen = 0; | |
eb6d8c2d HK |
480 | __u8 *dest; |
481 | int size; | |
af6d780b | 482 | /* dleSeen: set if last byte read was a DLE */ |
eb6d8c2d | 483 | int dleSeen; |
af6d780b AC |
484 | /* skip: if set, skip incoming data until possible start of |
485 | * new packet | |
486 | */ | |
eb6d8c2d | 487 | int skip; |
1da177e4 LT |
488 | __u8 data; |
489 | ||
eb6d8c2d HK |
490 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
491 | dest = garmin_data_p->inbuffer; | |
492 | size = garmin_data_p->insize; | |
493 | dleSeen = garmin_data_p->flags & FLAGS_GSP_DLESEEN; | |
494 | skip = garmin_data_p->flags & FLAGS_GSP_SKIP; | |
495 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
496 | ||
7065e826 | 497 | /* dev_dbg(dev, "%s - dle=%d skip=%d size=%d count=%d\n", |
b4072f46 | 498 | __func__, dleSeen, skip, size, count); */ |
1da177e4 | 499 | |
af6d780b | 500 | if (size == 0) |
1da177e4 | 501 | size = GSP_INITIAL_OFFSET; |
1da177e4 LT |
502 | |
503 | while (offs < count) { | |
504 | ||
505 | data = *(buf+offs); | |
af6d780b | 506 | offs++; |
1da177e4 LT |
507 | |
508 | if (data == DLE) { | |
509 | if (skip) { /* start of a new pkt */ | |
510 | skip = 0; | |
511 | size = GSP_INITIAL_OFFSET; | |
512 | dleSeen = 1; | |
513 | } else if (dleSeen) { | |
514 | dest[size++] = data; | |
515 | dleSeen = 0; | |
516 | } else { | |
517 | dleSeen = 1; | |
518 | } | |
519 | } else if (data == ETX) { | |
520 | if (dleSeen) { | |
521 | /* packet complete */ | |
522 | ||
523 | data = dest[GSP_INITIAL_OFFSET]; | |
524 | ||
525 | if (data == ACK) { | |
526 | ack_or_nak_seen = ACK; | |
7065e826 | 527 | dev_dbg(dev, "ACK packet complete.\n"); |
1da177e4 LT |
528 | } else if (data == NAK) { |
529 | ack_or_nak_seen = NAK; | |
7065e826 | 530 | dev_dbg(dev, "NAK packet complete.\n"); |
1da177e4 | 531 | } else { |
7065e826 | 532 | dev_dbg(dev, "packet complete - id=0x%X.\n", |
af6d780b | 533 | 0xFF & data); |
1da177e4 LT |
534 | gsp_rec_packet(garmin_data_p, size); |
535 | } | |
536 | ||
537 | skip = 1; | |
538 | size = GSP_INITIAL_OFFSET; | |
539 | dleSeen = 0; | |
540 | } else { | |
541 | dest[size++] = data; | |
542 | } | |
543 | } else if (!skip) { | |
544 | ||
545 | if (dleSeen) { | |
1da177e4 LT |
546 | size = GSP_INITIAL_OFFSET; |
547 | dleSeen = 0; | |
548 | } | |
549 | ||
550 | dest[size++] = data; | |
551 | } | |
552 | ||
553 | if (size >= GPS_IN_BUFSIZ) { | |
7065e826 | 554 | dev_dbg(dev, "%s - packet too large.\n", __func__); |
1da177e4 LT |
555 | skip = 1; |
556 | size = GSP_INITIAL_OFFSET; | |
557 | dleSeen = 0; | |
558 | } | |
559 | } | |
560 | ||
eb6d8c2d HK |
561 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
562 | ||
1da177e4 LT |
563 | garmin_data_p->insize = size; |
564 | ||
af6d780b | 565 | /* copy flags back to structure */ |
1da177e4 LT |
566 | if (skip) |
567 | garmin_data_p->flags |= FLAGS_GSP_SKIP; | |
568 | else | |
569 | garmin_data_p->flags &= ~FLAGS_GSP_SKIP; | |
570 | ||
571 | if (dleSeen) | |
572 | garmin_data_p->flags |= FLAGS_GSP_DLESEEN; | |
573 | else | |
574 | garmin_data_p->flags &= ~FLAGS_GSP_DLESEEN; | |
575 | ||
eb6d8c2d HK |
576 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
577 | ||
b4072f46 HK |
578 | if (ack_or_nak_seen) { |
579 | if (gsp_next_packet(garmin_data_p) > 0) | |
580 | garmin_data_p->state = STATE_ACTIVE; | |
581 | else | |
582 | garmin_data_p->state = STATE_GSP_WAIT_DATA; | |
583 | } | |
1da177e4 LT |
584 | return count; |
585 | } | |
586 | ||
587 | ||
588 | ||
1da177e4 LT |
589 | /* |
590 | * Sends a usb packet to the tty | |
591 | * | |
592 | * Assumes, that all packages and at an usb-packet boundary. | |
593 | * | |
594 | * return <0 on error, 0 if packet is incomplete or > 0 if packet was sent | |
595 | */ | |
af6d780b | 596 | static int gsp_send(struct garmin_data *garmin_data_p, |
1da177e4 LT |
597 | const unsigned char *buf, int count) |
598 | { | |
7065e826 | 599 | struct device *dev = &garmin_data_p->port->dev; |
1da177e4 LT |
600 | const unsigned char *src; |
601 | unsigned char *dst; | |
602 | int pktid = 0; | |
603 | int datalen = 0; | |
604 | int cksum = 0; | |
af6d780b | 605 | int i = 0; |
1da177e4 LT |
606 | int k; |
607 | ||
7065e826 GKH |
608 | dev_dbg(dev, "%s - state %d - %d bytes.\n", __func__, |
609 | garmin_data_p->state, count); | |
1da177e4 LT |
610 | |
611 | k = garmin_data_p->outsize; | |
612 | if ((k+count) > GPS_OUT_BUFSIZ) { | |
7065e826 | 613 | dev_dbg(dev, "packet too large\n"); |
1da177e4 LT |
614 | garmin_data_p->outsize = 0; |
615 | return -4; | |
616 | } | |
617 | ||
618 | memcpy(garmin_data_p->outbuffer+k, buf, count); | |
619 | k += count; | |
620 | garmin_data_p->outsize = k; | |
621 | ||
622 | if (k >= GARMIN_PKTHDR_LENGTH) { | |
623 | pktid = getPacketId(garmin_data_p->outbuffer); | |
af6d780b | 624 | datalen = getDataLength(garmin_data_p->outbuffer); |
1da177e4 LT |
625 | i = GARMIN_PKTHDR_LENGTH + datalen; |
626 | if (k < i) | |
627 | return 0; | |
628 | } else { | |
629 | return 0; | |
630 | } | |
631 | ||
7065e826 | 632 | dev_dbg(dev, "%s - %d bytes in buffer, %d bytes in pkt.\n", __func__, k, i); |
1da177e4 LT |
633 | |
634 | /* garmin_data_p->outbuffer now contains a complete packet */ | |
635 | ||
59d33f2f GKH |
636 | usb_serial_debug_data(&garmin_data_p->port->dev, __func__, k, |
637 | garmin_data_p->outbuffer); | |
1da177e4 LT |
638 | |
639 | garmin_data_p->outsize = 0; | |
640 | ||
641 | if (GARMIN_LAYERID_APPL != getLayerId(garmin_data_p->outbuffer)) { | |
7065e826 | 642 | dev_dbg(dev, "not an application packet (%d)\n", |
af6d780b | 643 | getLayerId(garmin_data_p->outbuffer)); |
1da177e4 LT |
644 | return -1; |
645 | } | |
646 | ||
647 | if (pktid > 255) { | |
7065e826 | 648 | dev_dbg(dev, "packet-id %d too large\n", pktid); |
1da177e4 LT |
649 | return -2; |
650 | } | |
651 | ||
652 | if (datalen > 255) { | |
7065e826 | 653 | dev_dbg(dev, "packet-size %d too large\n", datalen); |
1da177e4 LT |
654 | return -3; |
655 | } | |
656 | ||
657 | /* the serial protocol should be able to handle this packet */ | |
658 | ||
659 | k = 0; | |
660 | src = garmin_data_p->outbuffer+GARMIN_PKTHDR_LENGTH; | |
af6d780b | 661 | for (i = 0; i < datalen; i++) { |
1da177e4 LT |
662 | if (*src++ == DLE) |
663 | k++; | |
664 | } | |
665 | ||
666 | src = garmin_data_p->outbuffer+GARMIN_PKTHDR_LENGTH; | |
667 | if (k > (GARMIN_PKTHDR_LENGTH-2)) { | |
af6d780b | 668 | /* can't add stuffing DLEs in place, move data to end |
eb6d8c2d | 669 | of buffer ... */ |
1da177e4 LT |
670 | dst = garmin_data_p->outbuffer+GPS_OUT_BUFSIZ-datalen; |
671 | memcpy(dst, src, datalen); | |
672 | src = dst; | |
673 | } | |
674 | ||
675 | dst = garmin_data_p->outbuffer; | |
676 | ||
677 | *dst++ = DLE; | |
678 | *dst++ = pktid; | |
679 | cksum += pktid; | |
680 | *dst++ = datalen; | |
681 | cksum += datalen; | |
682 | if (datalen == DLE) | |
683 | *dst++ = DLE; | |
684 | ||
af6d780b | 685 | for (i = 0; i < datalen; i++) { |
1da177e4 LT |
686 | __u8 c = *src++; |
687 | *dst++ = c; | |
688 | cksum += c; | |
689 | if (c == DLE) | |
690 | *dst++ = DLE; | |
691 | } | |
af6d780b | 692 | |
1da177e4 LT |
693 | cksum = 0xFF & -cksum; |
694 | *dst++ = cksum; | |
695 | if (cksum == DLE) | |
696 | *dst++ = DLE; | |
697 | *dst++ = DLE; | |
698 | *dst++ = ETX; | |
699 | ||
700 | i = dst-garmin_data_p->outbuffer; | |
701 | ||
702 | send_to_tty(garmin_data_p->port, garmin_data_p->outbuffer, i); | |
703 | ||
704 | garmin_data_p->pkt_id = pktid; | |
705 | garmin_data_p->state = STATE_WAIT_TTY_ACK; | |
706 | ||
707 | return i; | |
708 | } | |
709 | ||
710 | ||
1da177e4 LT |
711 | /* |
712 | * Process the next pending data packet - if there is one | |
713 | */ | |
b4072f46 | 714 | static int gsp_next_packet(struct garmin_data *garmin_data_p) |
1da177e4 | 715 | { |
b4072f46 | 716 | int result = 0; |
1da177e4 LT |
717 | struct garmin_packet *pkt = NULL; |
718 | ||
719 | while ((pkt = pkt_pop(garmin_data_p)) != NULL) { | |
7065e826 | 720 | dev_dbg(&garmin_data_p->port->dev, "%s - next pkt: %d\n", __func__, pkt->seq); |
b4072f46 HK |
721 | result = gsp_send(garmin_data_p, pkt->data, pkt->size); |
722 | if (result > 0) { | |
1da177e4 | 723 | kfree(pkt); |
b4072f46 | 724 | return result; |
1da177e4 LT |
725 | } |
726 | kfree(pkt); | |
727 | } | |
b4072f46 | 728 | return result; |
1da177e4 LT |
729 | } |
730 | ||
731 | ||
732 | ||
1da177e4 LT |
733 | /****************************************************************************** |
734 | * garmin native mode | |
735 | ******************************************************************************/ | |
736 | ||
737 | ||
738 | /* | |
739 | * Called for data received from tty | |
740 | * | |
741 | * The input data is expected to be in garmin usb-packet format. | |
742 | * | |
743 | * buf contains the data read, it may span more than one packet | |
744 | * or even incomplete packets | |
745 | */ | |
af6d780b | 746 | static int nat_receive(struct garmin_data *garmin_data_p, |
eb6d8c2d | 747 | const unsigned char *buf, int count) |
1da177e4 | 748 | { |
eb6d8c2d | 749 | unsigned long flags; |
af6d780b | 750 | __u8 *dest; |
1da177e4 LT |
751 | int offs = 0; |
752 | int result = count; | |
753 | int len; | |
754 | ||
755 | while (offs < count) { | |
af6d780b | 756 | /* if buffer contains header, copy rest of data */ |
1da177e4 LT |
757 | if (garmin_data_p->insize >= GARMIN_PKTHDR_LENGTH) |
758 | len = GARMIN_PKTHDR_LENGTH | |
759 | +getDataLength(garmin_data_p->inbuffer); | |
760 | else | |
761 | len = GARMIN_PKTHDR_LENGTH; | |
762 | ||
763 | if (len >= GPS_IN_BUFSIZ) { | |
af6d780b AC |
764 | /* seems to be an invalid packet, ignore rest |
765 | of input */ | |
7065e826 GKH |
766 | dev_dbg(&garmin_data_p->port->dev, |
767 | "%s - packet size too large: %d\n", | |
768 | __func__, len); | |
1da177e4 LT |
769 | garmin_data_p->insize = 0; |
770 | count = 0; | |
771 | result = -EINVPKT; | |
772 | } else { | |
773 | len -= garmin_data_p->insize; | |
774 | if (len > (count-offs)) | |
775 | len = (count-offs); | |
776 | if (len > 0) { | |
777 | dest = garmin_data_p->inbuffer | |
af6d780b | 778 | + garmin_data_p->insize; |
1da177e4 LT |
779 | memcpy(dest, buf+offs, len); |
780 | garmin_data_p->insize += len; | |
781 | offs += len; | |
782 | } | |
783 | } | |
784 | ||
785 | /* do we have a complete packet ? */ | |
786 | if (garmin_data_p->insize >= GARMIN_PKTHDR_LENGTH) { | |
787 | len = GARMIN_PKTHDR_LENGTH+ | |
788 | getDataLength(garmin_data_p->inbuffer); | |
789 | if (garmin_data_p->insize >= len) { | |
af6d780b AC |
790 | garmin_write_bulk(garmin_data_p->port, |
791 | garmin_data_p->inbuffer, | |
792 | len, 0); | |
1da177e4 LT |
793 | garmin_data_p->insize = 0; |
794 | ||
795 | /* if this was an abort-transfer command, | |
796 | flush all queued data. */ | |
797 | if (isAbortTrfCmnd(garmin_data_p->inbuffer)) { | |
af6d780b AC |
798 | spin_lock_irqsave(&garmin_data_p->lock, |
799 | flags); | |
1da177e4 | 800 | garmin_data_p->flags |= FLAGS_DROP_DATA; |
af6d780b AC |
801 | spin_unlock_irqrestore( |
802 | &garmin_data_p->lock, flags); | |
1da177e4 LT |
803 | pkt_clear(garmin_data_p); |
804 | } | |
805 | } | |
806 | } | |
807 | } | |
808 | return result; | |
809 | } | |
810 | ||
811 | ||
812 | /****************************************************************************** | |
813 | * private packets | |
814 | ******************************************************************************/ | |
815 | ||
816 | static void priv_status_resp(struct usb_serial_port *port) | |
817 | { | |
af6d780b | 818 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 LT |
819 | __le32 *pkt = (__le32 *)garmin_data_p->privpkt; |
820 | ||
821 | pkt[0] = __cpu_to_le32(GARMIN_LAYERID_PRIVATE); | |
822 | pkt[1] = __cpu_to_le32(PRIV_PKTID_INFO_RESP); | |
823 | pkt[2] = __cpu_to_le32(12); | |
824 | pkt[3] = __cpu_to_le32(VERSION_MAJOR << 16 | VERSION_MINOR); | |
825 | pkt[4] = __cpu_to_le32(garmin_data_p->mode); | |
826 | pkt[5] = __cpu_to_le32(garmin_data_p->serial_num); | |
827 | ||
af6d780b | 828 | send_to_tty(port, (__u8 *)pkt, 6 * 4); |
1da177e4 LT |
829 | } |
830 | ||
831 | ||
832 | /****************************************************************************** | |
833 | * Garmin specific driver functions | |
834 | ******************************************************************************/ | |
835 | ||
836 | static int process_resetdev_request(struct usb_serial_port *port) | |
837 | { | |
eb6d8c2d | 838 | unsigned long flags; |
1da177e4 | 839 | int status; |
af6d780b | 840 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 | 841 | |
eb6d8c2d | 842 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1da177e4 LT |
843 | garmin_data_p->flags &= ~(CLEAR_HALT_REQUIRED); |
844 | garmin_data_p->state = STATE_RESET; | |
845 | garmin_data_p->serial_num = 0; | |
eb6d8c2d | 846 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
1da177e4 | 847 | |
af6d780b | 848 | usb_kill_urb(port->interrupt_in_urb); |
7065e826 | 849 | dev_dbg(&port->dev, "%s - usb_reset_device\n", __func__); |
1da177e4 LT |
850 | status = usb_reset_device(port->serial->dev); |
851 | if (status) | |
7065e826 | 852 | dev_dbg(&port->dev, "%s - usb_reset_device failed: %d\n", |
441b62c1 | 853 | __func__, status); |
1da177e4 LT |
854 | return status; |
855 | } | |
856 | ||
857 | ||
858 | ||
859 | /* | |
860 | * clear all cached data | |
861 | */ | |
af6d780b | 862 | static int garmin_clear(struct garmin_data *garmin_data_p) |
1da177e4 | 863 | { |
eb6d8c2d | 864 | unsigned long flags; |
1da177e4 LT |
865 | int status = 0; |
866 | ||
1da177e4 LT |
867 | /* flush all queued data */ |
868 | pkt_clear(garmin_data_p); | |
869 | ||
eb6d8c2d | 870 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1da177e4 LT |
871 | garmin_data_p->insize = 0; |
872 | garmin_data_p->outsize = 0; | |
eb6d8c2d | 873 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
1da177e4 LT |
874 | |
875 | return status; | |
876 | } | |
877 | ||
878 | ||
1da177e4 LT |
879 | static int garmin_init_session(struct usb_serial_port *port) |
880 | { | |
881 | struct usb_serial *serial = port->serial; | |
af6d780b | 882 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 | 883 | int status = 0; |
b4072f46 | 884 | int i = 0; |
1da177e4 LT |
885 | |
886 | if (status == 0) { | |
af6d780b | 887 | usb_kill_urb(port->interrupt_in_urb); |
1da177e4 | 888 | |
7065e826 | 889 | dev_dbg(&serial->dev->dev, "%s - adding interrupt input\n", __func__); |
1da177e4 LT |
890 | status = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
891 | if (status) | |
892 | dev_err(&serial->dev->dev, | |
af6d780b AC |
893 | "%s - failed submitting interrupt urb, error %d\n", |
894 | __func__, status); | |
1da177e4 LT |
895 | } |
896 | ||
b4072f46 HK |
897 | /* |
898 | * using the initialization method from gpsbabel. See comments in | |
899 | * gpsbabel/jeeps/gpslibusb.c gusb_reset_toggles() | |
900 | */ | |
1da177e4 | 901 | if (status == 0) { |
7065e826 | 902 | dev_dbg(&serial->dev->dev, "%s - starting session ...\n", __func__); |
1da177e4 | 903 | garmin_data_p->state = STATE_ACTIVE; |
1da177e4 | 904 | |
b4072f46 | 905 | for (i = 0; i < 3; i++) { |
1da177e4 | 906 | status = garmin_write_bulk(port, |
b4072f46 HK |
907 | GARMIN_START_SESSION_REQ, |
908 | sizeof(GARMIN_START_SESSION_REQ), 0); | |
909 | ||
910 | if (status < 0) | |
911 | break; | |
1da177e4 | 912 | } |
b4072f46 HK |
913 | |
914 | if (status > 0) | |
915 | status = 0; | |
1da177e4 LT |
916 | } |
917 | ||
918 | return status; | |
919 | } | |
920 | ||
921 | ||
922 | ||
a509a7e4 | 923 | static int garmin_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 924 | { |
eb6d8c2d | 925 | unsigned long flags; |
1da177e4 | 926 | int status = 0; |
af6d780b | 927 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 | 928 | |
eb6d8c2d | 929 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1da177e4 LT |
930 | garmin_data_p->mode = initial_mode; |
931 | garmin_data_p->count = 0; | |
b4026c45 | 932 | garmin_data_p->flags &= FLAGS_SESSION_REPLY1_SEEN; |
eb6d8c2d | 933 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
1da177e4 LT |
934 | |
935 | /* shutdown any bulk reads that might be going on */ | |
af6d780b AC |
936 | usb_kill_urb(port->write_urb); |
937 | usb_kill_urb(port->read_urb); | |
1da177e4 | 938 | |
95da310e | 939 | if (garmin_data_p->state == STATE_RESET) |
1da177e4 | 940 | status = garmin_init_session(port); |
1da177e4 LT |
941 | |
942 | garmin_data_p->state = STATE_ACTIVE; | |
1da177e4 LT |
943 | return status; |
944 | } | |
945 | ||
946 | ||
335f8514 | 947 | static void garmin_close(struct usb_serial_port *port) |
1da177e4 | 948 | { |
af6d780b | 949 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 | 950 | |
1143832e GKH |
951 | dev_dbg(&port->dev, "%s - mode=%d state=%d flags=0x%X\n", |
952 | __func__, garmin_data_p->mode, garmin_data_p->state, | |
953 | garmin_data_p->flags); | |
1da177e4 | 954 | |
618aa106 | 955 | garmin_clear(garmin_data_p); |
1da177e4 LT |
956 | |
957 | /* shutdown our urbs */ | |
af6d780b AC |
958 | usb_kill_urb(port->read_urb); |
959 | usb_kill_urb(port->write_urb); | |
1da177e4 | 960 | |
b4072f46 HK |
961 | /* keep reset state so we know that we must start a new session */ |
962 | if (garmin_data_p->state != STATE_RESET) | |
1da177e4 | 963 | garmin_data_p->state = STATE_DISCONNECTED; |
1da177e4 LT |
964 | } |
965 | ||
b4072f46 | 966 | |
af6d780b | 967 | static void garmin_write_bulk_callback(struct urb *urb) |
1da177e4 | 968 | { |
cdc97792 | 969 | struct usb_serial_port *port = urb->context; |
1da177e4 | 970 | |
468d1362 | 971 | if (port) { |
af6d780b AC |
972 | struct garmin_data *garmin_data_p = |
973 | usb_get_serial_port_data(port); | |
1da177e4 | 974 | |
b4072f46 | 975 | if (GARMIN_LAYERID_APPL == getLayerId(urb->transfer_buffer)) { |
468d1362 | 976 | |
b4072f46 HK |
977 | if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { |
978 | gsp_send_ack(garmin_data_p, | |
979 | ((__u8 *)urb->transfer_buffer)[4]); | |
980 | } | |
468d1362 | 981 | } |
468d1362 | 982 | usb_serial_port_softint(port); |
1da177e4 LT |
983 | } |
984 | ||
af6d780b AC |
985 | /* Ignore errors that resulted from garmin_write_bulk with |
986 | dismiss_ack = 1 */ | |
468d1362 HK |
987 | |
988 | /* free up the transfer buffer, as usb_free_urb() does not do this */ | |
af6d780b | 989 | kfree(urb->transfer_buffer); |
1da177e4 LT |
990 | } |
991 | ||
992 | ||
af6d780b | 993 | static int garmin_write_bulk(struct usb_serial_port *port, |
468d1362 HK |
994 | const unsigned char *buf, int count, |
995 | int dismiss_ack) | |
1da177e4 | 996 | { |
eb6d8c2d | 997 | unsigned long flags; |
1da177e4 | 998 | struct usb_serial *serial = port->serial; |
af6d780b | 999 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 LT |
1000 | struct urb *urb; |
1001 | unsigned char *buffer; | |
1002 | int status; | |
1003 | ||
eb6d8c2d | 1004 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1da177e4 | 1005 | garmin_data_p->flags &= ~FLAGS_DROP_DATA; |
eb6d8c2d | 1006 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
1da177e4 | 1007 | |
af6d780b | 1008 | buffer = kmalloc(count, GFP_ATOMIC); |
1da177e4 LT |
1009 | if (!buffer) { |
1010 | dev_err(&port->dev, "out of memory\n"); | |
1011 | return -ENOMEM; | |
1012 | } | |
1013 | ||
1014 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
1015 | if (!urb) { | |
1016 | dev_err(&port->dev, "no more free urbs\n"); | |
af6d780b | 1017 | kfree(buffer); |
1da177e4 LT |
1018 | return -ENOMEM; |
1019 | } | |
1020 | ||
af6d780b | 1021 | memcpy(buffer, buf, count); |
1da177e4 | 1022 | |
59d33f2f | 1023 | usb_serial_debug_data(&port->dev, __func__, count, buffer); |
1da177e4 | 1024 | |
af6d780b AC |
1025 | usb_fill_bulk_urb(urb, serial->dev, |
1026 | usb_sndbulkpipe(serial->dev, | |
1027 | port->bulk_out_endpointAddress), | |
1da177e4 | 1028 | buffer, count, |
468d1362 HK |
1029 | garmin_write_bulk_callback, |
1030 | dismiss_ack ? NULL : port); | |
1da177e4 LT |
1031 | urb->transfer_flags |= URB_ZERO_PACKET; |
1032 | ||
1033 | if (GARMIN_LAYERID_APPL == getLayerId(buffer)) { | |
b4072f46 HK |
1034 | |
1035 | spin_lock_irqsave(&garmin_data_p->lock, flags); | |
1036 | garmin_data_p->flags |= APP_REQ_SEEN; | |
1037 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
1038 | ||
1da177e4 LT |
1039 | if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { |
1040 | pkt_clear(garmin_data_p); | |
1041 | garmin_data_p->state = STATE_GSP_WAIT_DATA; | |
1042 | } | |
1043 | } | |
1044 | ||
1045 | /* send it down the pipe */ | |
1046 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1047 | if (status) { | |
1048 | dev_err(&port->dev, | |
af6d780b | 1049 | "%s - usb_submit_urb(write bulk) failed with status = %d\n", |
441b62c1 | 1050 | __func__, status); |
1da177e4 | 1051 | count = status; |
1da177e4 LT |
1052 | } |
1053 | ||
1054 | /* we are done with this urb, so let the host driver | |
1055 | * really free it when it is finished with it */ | |
af6d780b | 1056 | usb_free_urb(urb); |
1da177e4 LT |
1057 | |
1058 | return count; | |
1059 | } | |
1060 | ||
af6d780b | 1061 | static int garmin_write(struct tty_struct *tty, struct usb_serial_port *port, |
95da310e | 1062 | const unsigned char *buf, int count) |
1da177e4 | 1063 | { |
7065e826 | 1064 | struct device *dev = &port->dev; |
1da177e4 | 1065 | int pktid, pktsiz, len; |
af6d780b | 1066 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 LT |
1067 | __le32 *privpkt = (__le32 *)garmin_data_p->privpkt; |
1068 | ||
59d33f2f | 1069 | usb_serial_debug_data(dev, __func__, count, buf); |
1da177e4 | 1070 | |
b4072f46 HK |
1071 | if (garmin_data_p->state == STATE_RESET) |
1072 | return -EIO; | |
1073 | ||
1da177e4 LT |
1074 | /* check for our private packets */ |
1075 | if (count >= GARMIN_PKTHDR_LENGTH) { | |
1da177e4 LT |
1076 | len = PRIVPKTSIZ; |
1077 | if (count < len) | |
1078 | len = count; | |
1079 | ||
1080 | memcpy(garmin_data_p->privpkt, buf, len); | |
1081 | ||
1082 | pktsiz = getDataLength(garmin_data_p->privpkt); | |
1083 | pktid = getPacketId(garmin_data_p->privpkt); | |
1084 | ||
1085 | if (count == (GARMIN_PKTHDR_LENGTH+pktsiz) | |
af6d780b AC |
1086 | && GARMIN_LAYERID_PRIVATE == |
1087 | getLayerId(garmin_data_p->privpkt)) { | |
1da177e4 | 1088 | |
7065e826 | 1089 | dev_dbg(dev, "%s - processing private request %d\n", |
441b62c1 | 1090 | __func__, pktid); |
1da177e4 | 1091 | |
af6d780b | 1092 | /* drop all unfinished transfers */ |
1da177e4 LT |
1093 | garmin_clear(garmin_data_p); |
1094 | ||
af6d780b | 1095 | switch (pktid) { |
1da177e4 LT |
1096 | case PRIV_PKTID_SET_MODE: |
1097 | if (pktsiz != 4) | |
1098 | return -EINVPKT; | |
1099 | garmin_data_p->mode = __le32_to_cpu(privpkt[3]); | |
7065e826 | 1100 | dev_dbg(dev, "%s - mode set to %d\n", |
441b62c1 | 1101 | __func__, garmin_data_p->mode); |
1da177e4 LT |
1102 | break; |
1103 | ||
1104 | case PRIV_PKTID_INFO_REQ: | |
1105 | priv_status_resp(port); | |
1106 | break; | |
1107 | ||
1108 | case PRIV_PKTID_RESET_REQ: | |
b4072f46 | 1109 | process_resetdev_request(port); |
1da177e4 LT |
1110 | break; |
1111 | ||
1112 | case PRIV_PKTID_SET_DEF_MODE: | |
1113 | if (pktsiz != 4) | |
1114 | return -EINVPKT; | |
1115 | initial_mode = __le32_to_cpu(privpkt[3]); | |
7065e826 | 1116 | dev_dbg(dev, "%s - initial_mode set to %d\n", |
441b62c1 | 1117 | __func__, |
1da177e4 LT |
1118 | garmin_data_p->mode); |
1119 | break; | |
1120 | } | |
1121 | return count; | |
1122 | } | |
1123 | } | |
1124 | ||
1125 | if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { | |
1126 | return gsp_receive(garmin_data_p, buf, count); | |
1127 | } else { /* MODE_NATIVE */ | |
1128 | return nat_receive(garmin_data_p, buf, count); | |
1129 | } | |
1130 | } | |
1131 | ||
1132 | ||
95da310e | 1133 | static int garmin_write_room(struct tty_struct *tty) |
1da177e4 | 1134 | { |
95da310e | 1135 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1136 | /* |
1137 | * Report back the bytes currently available in the output buffer. | |
1138 | */ | |
af6d780b | 1139 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 LT |
1140 | return GPS_OUT_BUFSIZ-garmin_data_p->outsize; |
1141 | } | |
1142 | ||
1143 | ||
af6d780b | 1144 | static void garmin_read_process(struct garmin_data *garmin_data_p, |
b4026c45 HK |
1145 | unsigned char *data, unsigned data_length, |
1146 | int bulk_data) | |
1da177e4 | 1147 | { |
b4072f46 HK |
1148 | unsigned long flags; |
1149 | ||
1da177e4 LT |
1150 | if (garmin_data_p->flags & FLAGS_DROP_DATA) { |
1151 | /* abort-transfer cmd is actice */ | |
7065e826 | 1152 | dev_dbg(&garmin_data_p->port->dev, "%s - pkt dropped\n", __func__); |
1da177e4 | 1153 | } else if (garmin_data_p->state != STATE_DISCONNECTED && |
af6d780b | 1154 | garmin_data_p->state != STATE_RESET) { |
1da177e4 | 1155 | |
1da177e4 | 1156 | /* if throttling is active or postprecessing is required |
eb6d8c2d | 1157 | put the received data in the input queue, otherwise |
1da177e4 LT |
1158 | send it directly to the tty port */ |
1159 | if (garmin_data_p->flags & FLAGS_QUEUING) { | |
1160 | pkt_add(garmin_data_p, data, data_length); | |
7065e826 | 1161 | } else if (bulk_data || |
b4026c45 | 1162 | getLayerId(data) == GARMIN_LAYERID_APPL) { |
b4072f46 HK |
1163 | |
1164 | spin_lock_irqsave(&garmin_data_p->lock, flags); | |
1165 | garmin_data_p->flags |= APP_RESP_SEEN; | |
1166 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
1167 | ||
1168 | if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { | |
1da177e4 | 1169 | pkt_add(garmin_data_p, data, data_length); |
b4072f46 HK |
1170 | } else { |
1171 | send_to_tty(garmin_data_p->port, data, | |
1172 | data_length); | |
1173 | } | |
1da177e4 | 1174 | } |
b4072f46 | 1175 | /* ignore system layer packets ... */ |
1da177e4 LT |
1176 | } |
1177 | } | |
1178 | ||
1179 | ||
af6d780b | 1180 | static void garmin_read_bulk_callback(struct urb *urb) |
1da177e4 | 1181 | { |
eb6d8c2d | 1182 | unsigned long flags; |
cdc97792 | 1183 | struct usb_serial_port *port = urb->context; |
af6d780b | 1184 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 | 1185 | unsigned char *data = urb->transfer_buffer; |
f9feb517 GKH |
1186 | int status = urb->status; |
1187 | int retval; | |
1da177e4 | 1188 | |
f9feb517 | 1189 | if (status) { |
7065e826 | 1190 | dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", |
441b62c1 | 1191 | __func__, status); |
1da177e4 LT |
1192 | return; |
1193 | } | |
1194 | ||
59d33f2f | 1195 | usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); |
1da177e4 | 1196 | |
b4026c45 | 1197 | garmin_read_process(garmin_data_p, data, urb->actual_length, 1); |
1da177e4 | 1198 | |
eb6d8c2d HK |
1199 | if (urb->actual_length == 0 && |
1200 | 0 != (garmin_data_p->flags & FLAGS_BULK_IN_RESTART)) { | |
1201 | spin_lock_irqsave(&garmin_data_p->lock, flags); | |
1202 | garmin_data_p->flags &= ~FLAGS_BULK_IN_RESTART; | |
1203 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
f9feb517 GKH |
1204 | retval = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
1205 | if (retval) | |
1da177e4 LT |
1206 | dev_err(&port->dev, |
1207 | "%s - failed resubmitting read urb, error %d\n", | |
441b62c1 | 1208 | __func__, retval); |
eb6d8c2d HK |
1209 | } else if (urb->actual_length > 0) { |
1210 | /* Continue trying to read until nothing more is received */ | |
1211 | if (0 == (garmin_data_p->flags & FLAGS_THROTTLED)) { | |
f9feb517 GKH |
1212 | retval = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
1213 | if (retval) | |
eb6d8c2d | 1214 | dev_err(&port->dev, |
7065e826 GKH |
1215 | "%s - failed resubmitting read urb, error %d\n", |
1216 | __func__, retval); | |
eb6d8c2d HK |
1217 | } |
1218 | } else { | |
7065e826 | 1219 | dev_dbg(&port->dev, "%s - end of bulk data\n", __func__); |
eb6d8c2d HK |
1220 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1221 | garmin_data_p->flags &= ~FLAGS_BULK_IN_ACTIVE; | |
1222 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
1da177e4 | 1223 | } |
1da177e4 LT |
1224 | } |
1225 | ||
1226 | ||
af6d780b | 1227 | static void garmin_read_int_callback(struct urb *urb) |
1da177e4 | 1228 | { |
eb6d8c2d | 1229 | unsigned long flags; |
f9feb517 | 1230 | int retval; |
cdc97792 | 1231 | struct usb_serial_port *port = urb->context; |
af6d780b | 1232 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 | 1233 | unsigned char *data = urb->transfer_buffer; |
f9feb517 | 1234 | int status = urb->status; |
1da177e4 | 1235 | |
f9feb517 | 1236 | switch (status) { |
1da177e4 LT |
1237 | case 0: |
1238 | /* success */ | |
1239 | break; | |
1240 | case -ECONNRESET: | |
1241 | case -ENOENT: | |
1242 | case -ESHUTDOWN: | |
1243 | /* this urb is terminated, clean up */ | |
7065e826 | 1244 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", |
441b62c1 | 1245 | __func__, status); |
1da177e4 LT |
1246 | return; |
1247 | default: | |
7065e826 | 1248 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", |
441b62c1 | 1249 | __func__, status); |
1da177e4 LT |
1250 | return; |
1251 | } | |
1252 | ||
59d33f2f GKH |
1253 | usb_serial_debug_data(&port->dev, __func__, urb->actual_length, |
1254 | urb->transfer_buffer); | |
1da177e4 LT |
1255 | |
1256 | if (urb->actual_length == sizeof(GARMIN_BULK_IN_AVAIL_REPLY) && | |
1257 | 0 == memcmp(data, GARMIN_BULK_IN_AVAIL_REPLY, | |
af6d780b | 1258 | sizeof(GARMIN_BULK_IN_AVAIL_REPLY))) { |
1da177e4 | 1259 | |
7065e826 | 1260 | dev_dbg(&port->dev, "%s - bulk data available.\n", __func__); |
1da177e4 | 1261 | |
eb6d8c2d HK |
1262 | if (0 == (garmin_data_p->flags & FLAGS_BULK_IN_ACTIVE)) { |
1263 | ||
1264 | /* bulk data available */ | |
f9feb517 GKH |
1265 | retval = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
1266 | if (retval) { | |
eb6d8c2d | 1267 | dev_err(&port->dev, |
af6d780b AC |
1268 | "%s - failed submitting read urb, error %d\n", |
1269 | __func__, retval); | |
eb6d8c2d HK |
1270 | } else { |
1271 | spin_lock_irqsave(&garmin_data_p->lock, flags); | |
1272 | garmin_data_p->flags |= FLAGS_BULK_IN_ACTIVE; | |
af6d780b AC |
1273 | spin_unlock_irqrestore(&garmin_data_p->lock, |
1274 | flags); | |
eb6d8c2d HK |
1275 | } |
1276 | } else { | |
1277 | /* bulk-in transfer still active */ | |
1278 | spin_lock_irqsave(&garmin_data_p->lock, flags); | |
1279 | garmin_data_p->flags |= FLAGS_BULK_IN_RESTART; | |
1280 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
1da177e4 LT |
1281 | } |
1282 | ||
1283 | } else if (urb->actual_length == (4+sizeof(GARMIN_START_SESSION_REPLY)) | |
1284 | && 0 == memcmp(data, GARMIN_START_SESSION_REPLY, | |
af6d780b | 1285 | sizeof(GARMIN_START_SESSION_REPLY))) { |
1da177e4 | 1286 | |
eb6d8c2d | 1287 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1da177e4 | 1288 | garmin_data_p->flags |= FLAGS_SESSION_REPLY1_SEEN; |
eb6d8c2d | 1289 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
1da177e4 LT |
1290 | |
1291 | /* save the serial number */ | |
af6d780b AC |
1292 | garmin_data_p->serial_num = __le32_to_cpup( |
1293 | (__le32 *)(data+GARMIN_PKTHDR_LENGTH)); | |
1da177e4 | 1294 | |
7065e826 | 1295 | dev_dbg(&port->dev, "%s - start-of-session reply seen - serial %u.\n", |
441b62c1 | 1296 | __func__, garmin_data_p->serial_num); |
1da177e4 LT |
1297 | } |
1298 | ||
b4026c45 | 1299 | garmin_read_process(garmin_data_p, data, urb->actual_length, 0); |
1da177e4 | 1300 | |
af6d780b | 1301 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
f9feb517 | 1302 | if (retval) |
1da177e4 LT |
1303 | dev_err(&urb->dev->dev, |
1304 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 1305 | __func__, retval); |
1da177e4 LT |
1306 | } |
1307 | ||
1308 | ||
1309 | /* | |
1310 | * Sends the next queued packt to the tty port (garmin native mode only) | |
1311 | * and then sets a timer to call itself again until all queued data | |
1312 | * is sent. | |
1313 | */ | |
af6d780b | 1314 | static int garmin_flush_queue(struct garmin_data *garmin_data_p) |
1da177e4 | 1315 | { |
eb6d8c2d | 1316 | unsigned long flags; |
1da177e4 LT |
1317 | struct garmin_packet *pkt; |
1318 | ||
1319 | if ((garmin_data_p->flags & FLAGS_THROTTLED) == 0) { | |
1320 | pkt = pkt_pop(garmin_data_p); | |
1321 | if (pkt != NULL) { | |
1da177e4 LT |
1322 | send_to_tty(garmin_data_p->port, pkt->data, pkt->size); |
1323 | kfree(pkt); | |
1324 | mod_timer(&garmin_data_p->timer, (1)+jiffies); | |
1325 | ||
1326 | } else { | |
eb6d8c2d | 1327 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1da177e4 | 1328 | garmin_data_p->flags &= ~FLAGS_QUEUING; |
eb6d8c2d | 1329 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
1da177e4 LT |
1330 | } |
1331 | } | |
1332 | return 0; | |
1333 | } | |
1334 | ||
1335 | ||
95da310e | 1336 | static void garmin_throttle(struct tty_struct *tty) |
1da177e4 | 1337 | { |
95da310e | 1338 | struct usb_serial_port *port = tty->driver_data; |
af6d780b | 1339 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 | 1340 | |
1da177e4 LT |
1341 | /* set flag, data received will be put into a queue |
1342 | for later processing */ | |
63832515 | 1343 | spin_lock_irq(&garmin_data_p->lock); |
1da177e4 | 1344 | garmin_data_p->flags |= FLAGS_QUEUING|FLAGS_THROTTLED; |
63832515 | 1345 | spin_unlock_irq(&garmin_data_p->lock); |
1da177e4 LT |
1346 | } |
1347 | ||
1348 | ||
af6d780b | 1349 | static void garmin_unthrottle(struct tty_struct *tty) |
1da177e4 | 1350 | { |
95da310e | 1351 | struct usb_serial_port *port = tty->driver_data; |
af6d780b | 1352 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
eb6d8c2d | 1353 | int status; |
1da177e4 | 1354 | |
63832515 | 1355 | spin_lock_irq(&garmin_data_p->lock); |
1da177e4 | 1356 | garmin_data_p->flags &= ~FLAGS_THROTTLED; |
63832515 | 1357 | spin_unlock_irq(&garmin_data_p->lock); |
1da177e4 LT |
1358 | |
1359 | /* in native mode send queued data to tty, in | |
1360 | serial mode nothing needs to be done here */ | |
1361 | if (garmin_data_p->mode == MODE_NATIVE) | |
1362 | garmin_flush_queue(garmin_data_p); | |
eb6d8c2d HK |
1363 | |
1364 | if (0 != (garmin_data_p->flags & FLAGS_BULK_IN_ACTIVE)) { | |
63832515 | 1365 | status = usb_submit_urb(port->read_urb, GFP_KERNEL); |
eb6d8c2d HK |
1366 | if (status) |
1367 | dev_err(&port->dev, | |
1368 | "%s - failed resubmitting read urb, error %d\n", | |
441b62c1 | 1369 | __func__, status); |
eb6d8c2d | 1370 | } |
1da177e4 LT |
1371 | } |
1372 | ||
1da177e4 LT |
1373 | /* |
1374 | * The timer is currently only used to send queued packets to | |
1375 | * the tty in cases where the protocol provides no own handshaking | |
1376 | * to initiate the transfer. | |
1377 | */ | |
1378 | static void timeout_handler(unsigned long data) | |
1379 | { | |
1380 | struct garmin_data *garmin_data_p = (struct garmin_data *) data; | |
1381 | ||
1382 | /* send the next queued packet to the tty port */ | |
1383 | if (garmin_data_p->mode == MODE_NATIVE) | |
1384 | if (garmin_data_p->flags & FLAGS_QUEUING) | |
1385 | garmin_flush_queue(garmin_data_p); | |
1386 | } | |
1387 | ||
1388 | ||
1389 | ||
db5c8b52 | 1390 | static int garmin_port_probe(struct usb_serial_port *port) |
1da177e4 | 1391 | { |
db5c8b52 AS |
1392 | int status; |
1393 | struct garmin_data *garmin_data_p; | |
1da177e4 | 1394 | |
7ac9da10 | 1395 | garmin_data_p = kzalloc(sizeof(struct garmin_data), GFP_KERNEL); |
1da177e4 | 1396 | if (garmin_data_p == NULL) { |
441b62c1 | 1397 | dev_err(&port->dev, "%s - Out of memory\n", __func__); |
1da177e4 LT |
1398 | return -ENOMEM; |
1399 | } | |
1da177e4 LT |
1400 | init_timer(&garmin_data_p->timer); |
1401 | spin_lock_init(&garmin_data_p->lock); | |
1402 | INIT_LIST_HEAD(&garmin_data_p->pktlist); | |
af6d780b | 1403 | /* garmin_data_p->timer.expires = jiffies + session_timeout; */ |
1da177e4 LT |
1404 | garmin_data_p->timer.data = (unsigned long)garmin_data_p; |
1405 | garmin_data_p->timer.function = timeout_handler; | |
1406 | garmin_data_p->port = port; | |
1407 | garmin_data_p->state = 0; | |
b4026c45 | 1408 | garmin_data_p->flags = 0; |
1da177e4 LT |
1409 | garmin_data_p->count = 0; |
1410 | usb_set_serial_port_data(port, garmin_data_p); | |
1411 | ||
1412 | status = garmin_init_session(port); | |
1413 | ||
1414 | return status; | |
1415 | } | |
1416 | ||
1417 | ||
db5c8b52 | 1418 | static int garmin_port_remove(struct usb_serial_port *port) |
1da177e4 | 1419 | { |
af6d780b | 1420 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 | 1421 | |
af6d780b | 1422 | usb_kill_urb(port->interrupt_in_urb); |
1da177e4 | 1423 | del_timer_sync(&garmin_data_p->timer); |
af6d780b | 1424 | kfree(garmin_data_p); |
db5c8b52 | 1425 | return 0; |
1da177e4 LT |
1426 | } |
1427 | ||
1428 | ||
1da177e4 | 1429 | /* All of the device info needed */ |
ea65370d | 1430 | static struct usb_serial_driver garmin_device = { |
18fcac35 | 1431 | .driver = { |
eb6d8c2d HK |
1432 | .owner = THIS_MODULE, |
1433 | .name = "garmin_gps", | |
18fcac35 | 1434 | }, |
eb6d8c2d | 1435 | .description = "Garmin GPS usb/tty", |
1da177e4 | 1436 | .id_table = id_table, |
1da177e4 LT |
1437 | .num_ports = 1, |
1438 | .open = garmin_open, | |
1439 | .close = garmin_close, | |
1440 | .throttle = garmin_throttle, | |
1441 | .unthrottle = garmin_unthrottle, | |
db5c8b52 AS |
1442 | .port_probe = garmin_port_probe, |
1443 | .port_remove = garmin_port_remove, | |
1da177e4 LT |
1444 | .write = garmin_write, |
1445 | .write_room = garmin_write_room, | |
1da177e4 LT |
1446 | .write_bulk_callback = garmin_write_bulk_callback, |
1447 | .read_bulk_callback = garmin_read_bulk_callback, | |
1448 | .read_int_callback = garmin_read_int_callback, | |
1449 | }; | |
1450 | ||
97b6b6d2 AS |
1451 | static struct usb_serial_driver * const serial_drivers[] = { |
1452 | &garmin_device, NULL | |
1453 | }; | |
1da177e4 | 1454 | |
68e24113 | 1455 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 | 1456 | |
af6d780b AC |
1457 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1458 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
1459 | MODULE_LICENSE("GPL"); |
1460 | ||
1da177e4 LT |
1461 | module_param(initial_mode, int, S_IRUGO); |
1462 | MODULE_PARM_DESC(initial_mode, "Initial mode"); |