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5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0+ |
1da177e4 LT |
2 | /* |
3 | * Garmin GPS driver | |
4 | * | |
b4026c45 | 5 | * Copyright (C) 2006-2011 Hermann Kneissel herkne@gmx.de |
1da177e4 LT |
6 | * |
7 | * The latest version of the driver can be found at | |
8 | * http://sourceforge.net/projects/garmin-gps/ | |
9 | * | |
10 | * This driver has been derived from v2.1 of the visor driver. | |
1da177e4 LT |
11 | */ |
12 | ||
1da177e4 LT |
13 | #include <linux/kernel.h> |
14 | #include <linux/errno.h> | |
1da177e4 LT |
15 | #include <linux/slab.h> |
16 | #include <linux/timer.h> | |
17 | #include <linux/tty.h> | |
18 | #include <linux/tty_driver.h> | |
19 | #include <linux/tty_flip.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/spinlock.h> | |
af6d780b | 22 | #include <linux/uaccess.h> |
60063497 | 23 | #include <linux/atomic.h> |
1da177e4 | 24 | #include <linux/usb.h> |
a969888c | 25 | #include <linux/usb/serial.h> |
1da177e4 LT |
26 | |
27 | /* the mode to be set when the port ist opened */ | |
28 | static int initial_mode = 1; | |
29 | ||
1da177e4 LT |
30 | #define GARMIN_VENDOR_ID 0x091E |
31 | ||
32 | /* | |
33 | * Version Information | |
34 | */ | |
35 | ||
36 | #define VERSION_MAJOR 0 | |
b4026c45 | 37 | #define VERSION_MINOR 36 |
1da177e4 LT |
38 | |
39 | #define _STR(s) #s | |
af6d780b | 40 | #define _DRIVER_VERSION(a, b) "v" _STR(a) "." _STR(b) |
1da177e4 LT |
41 | #define DRIVER_VERSION _DRIVER_VERSION(VERSION_MAJOR, VERSION_MINOR) |
42 | #define DRIVER_AUTHOR "hermann kneissel" | |
43 | #define DRIVER_DESC "garmin gps driver" | |
44 | ||
45 | /* error codes returned by the driver */ | |
46 | #define EINVPKT 1000 /* invalid packet structure */ | |
47 | ||
48 | ||
af6d780b | 49 | /* size of the header of a packet using the usb protocol */ |
1da177e4 LT |
50 | #define GARMIN_PKTHDR_LENGTH 12 |
51 | ||
af6d780b AC |
52 | /* max. possible size of a packet using the serial protocol */ |
53 | #define MAX_SERIAL_PKT_SIZ (3 + 255 + 3) | |
1da177e4 | 54 | |
af6d780b AC |
55 | /* max. possible size of a packet with worst case stuffing */ |
56 | #define MAX_SERIAL_PKT_SIZ_STUFFED (MAX_SERIAL_PKT_SIZ + 256) | |
1da177e4 | 57 | |
af6d780b AC |
58 | /* size of a buffer able to hold a complete (no stuffing) packet |
59 | * (the document protocol does not contain packets with a larger | |
60 | * size, but in theory a packet may be 64k+12 bytes - if in | |
61 | * later protocol versions larger packet sizes occur, this value | |
62 | * should be increased accordingly, so the input buffer is always | |
63 | * large enough the store a complete packet inclusive header) */ | |
64 | #define GPS_IN_BUFSIZ (GARMIN_PKTHDR_LENGTH+MAX_SERIAL_PKT_SIZ) | |
1da177e4 | 65 | |
af6d780b AC |
66 | /* size of a buffer able to hold a complete (incl. stuffing) packet */ |
67 | #define GPS_OUT_BUFSIZ (GARMIN_PKTHDR_LENGTH+MAX_SERIAL_PKT_SIZ_STUFFED) | |
1da177e4 | 68 | |
af6d780b AC |
69 | /* where to place the packet id of a serial packet, so we can |
70 | * prepend the usb-packet header without the need to move the | |
71 | * packets data */ | |
1da177e4 LT |
72 | #define GSP_INITIAL_OFFSET (GARMIN_PKTHDR_LENGTH-2) |
73 | ||
af6d780b | 74 | /* max. size of incoming private packets (header+1 param) */ |
1da177e4 LT |
75 | #define PRIVPKTSIZ (GARMIN_PKTHDR_LENGTH+4) |
76 | ||
77 | #define GARMIN_LAYERID_TRANSPORT 0 | |
78 | #define GARMIN_LAYERID_APPL 20 | |
af6d780b | 79 | /* our own layer-id to use for some control mechanisms */ |
1da177e4 LT |
80 | #define GARMIN_LAYERID_PRIVATE 0x01106E4B |
81 | ||
82 | #define GARMIN_PKTID_PVT_DATA 51 | |
83 | #define GARMIN_PKTID_L001_COMMAND_DATA 10 | |
84 | ||
85 | #define CMND_ABORT_TRANSFER 0 | |
86 | ||
af6d780b | 87 | /* packet ids used in private layer */ |
1da177e4 LT |
88 | #define PRIV_PKTID_SET_DEBUG 1 |
89 | #define PRIV_PKTID_SET_MODE 2 | |
90 | #define PRIV_PKTID_INFO_REQ 3 | |
91 | #define PRIV_PKTID_INFO_RESP 4 | |
92 | #define PRIV_PKTID_RESET_REQ 5 | |
93 | #define PRIV_PKTID_SET_DEF_MODE 6 | |
94 | ||
95 | ||
96 | #define ETX 0x03 | |
97 | #define DLE 0x10 | |
98 | #define ACK 0x06 | |
99 | #define NAK 0x15 | |
100 | ||
101 | /* structure used to queue incoming packets */ | |
102 | struct garmin_packet { | |
103 | struct list_head list; | |
104 | int seq; | |
af6d780b AC |
105 | /* the real size of the data array, always > 0 */ |
106 | int size; | |
1da177e4 LT |
107 | __u8 data[1]; |
108 | }; | |
109 | ||
110 | /* structure used to keep the current state of the driver */ | |
111 | struct garmin_data { | |
112 | __u8 state; | |
113 | __u16 flags; | |
114 | __u8 mode; | |
1da177e4 LT |
115 | __u8 count; |
116 | __u8 pkt_id; | |
117 | __u32 serial_num; | |
118 | struct timer_list timer; | |
119 | struct usb_serial_port *port; | |
120 | int seq_counter; | |
121 | int insize; | |
122 | int outsize; | |
123 | __u8 inbuffer [GPS_IN_BUFSIZ]; /* tty -> usb */ | |
124 | __u8 outbuffer[GPS_OUT_BUFSIZ]; /* usb -> tty */ | |
125 | __u8 privpkt[4*6]; | |
126 | spinlock_t lock; | |
127 | struct list_head pktlist; | |
19a565d9 | 128 | struct usb_anchor write_urbs; |
1da177e4 LT |
129 | }; |
130 | ||
131 | ||
132 | #define STATE_NEW 0 | |
133 | #define STATE_INITIAL_DELAY 1 | |
134 | #define STATE_TIMEOUT 2 | |
135 | #define STATE_SESSION_REQ1 3 | |
136 | #define STATE_SESSION_REQ2 4 | |
137 | #define STATE_ACTIVE 5 | |
138 | ||
139 | #define STATE_RESET 8 | |
140 | #define STATE_DISCONNECTED 9 | |
141 | #define STATE_WAIT_TTY_ACK 10 | |
142 | #define STATE_GSP_WAIT_DATA 11 | |
143 | ||
144 | #define MODE_NATIVE 0 | |
145 | #define MODE_GARMIN_SERIAL 1 | |
146 | ||
af6d780b | 147 | /* Flags used in garmin_data.flags: */ |
1da177e4 LT |
148 | #define FLAGS_SESSION_REPLY_MASK 0x00C0 |
149 | #define FLAGS_SESSION_REPLY1_SEEN 0x0080 | |
150 | #define FLAGS_SESSION_REPLY2_SEEN 0x0040 | |
151 | #define FLAGS_BULK_IN_ACTIVE 0x0020 | |
eb6d8c2d HK |
152 | #define FLAGS_BULK_IN_RESTART 0x0010 |
153 | #define FLAGS_THROTTLED 0x0008 | |
b4072f46 HK |
154 | #define APP_REQ_SEEN 0x0004 |
155 | #define APP_RESP_SEEN 0x0002 | |
1da177e4 LT |
156 | #define CLEAR_HALT_REQUIRED 0x0001 |
157 | ||
158 | #define FLAGS_QUEUING 0x0100 | |
1da177e4 LT |
159 | #define FLAGS_DROP_DATA 0x0800 |
160 | ||
161 | #define FLAGS_GSP_SKIP 0x1000 | |
162 | #define FLAGS_GSP_DLESEEN 0x2000 | |
163 | ||
164 | ||
165 | ||
166 | ||
167 | ||
168 | ||
169 | /* function prototypes */ | |
b4072f46 HK |
170 | static int gsp_next_packet(struct garmin_data *garmin_data_p); |
171 | static int garmin_write_bulk(struct usb_serial_port *port, | |
468d1362 HK |
172 | const unsigned char *buf, int count, |
173 | int dismiss_ack); | |
1da177e4 LT |
174 | |
175 | /* some special packets to be send or received */ | |
176 | static unsigned char const GARMIN_START_SESSION_REQ[] | |
177 | = { 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0 }; | |
1da177e4 LT |
178 | static unsigned char const GARMIN_START_SESSION_REPLY[] |
179 | = { 0, 0, 0, 0, 6, 0, 0, 0, 4, 0, 0, 0 }; | |
1da177e4 LT |
180 | static unsigned char const GARMIN_BULK_IN_AVAIL_REPLY[] |
181 | = { 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0 }; | |
182 | static unsigned char const GARMIN_APP_LAYER_REPLY[] | |
183 | = { 0x14, 0, 0, 0 }; | |
184 | static unsigned char const GARMIN_START_PVT_REQ[] | |
185 | = { 20, 0, 0, 0, 10, 0, 0, 0, 2, 0, 0, 0, 49, 0 }; | |
186 | static unsigned char const GARMIN_STOP_PVT_REQ[] | |
187 | = { 20, 0, 0, 0, 10, 0, 0, 0, 2, 0, 0, 0, 50, 0 }; | |
188 | static unsigned char const GARMIN_STOP_TRANSFER_REQ[] | |
189 | = { 20, 0, 0, 0, 10, 0, 0, 0, 2, 0, 0, 0, 0, 0 }; | |
190 | static unsigned char const GARMIN_STOP_TRANSFER_REQ_V2[] | |
191 | = { 20, 0, 0, 0, 10, 0, 0, 0, 1, 0, 0, 0, 0 }; | |
192 | static unsigned char const PRIVATE_REQ[] | |
193 | = { 0x4B, 0x6E, 0x10, 0x01, 0xFF, 0, 0, 0, 0xFF, 0, 0, 0 }; | |
194 | ||
195 | ||
196 | ||
7d40d7e8 | 197 | static const struct usb_device_id id_table[] = { |
af6d780b AC |
198 | /* the same device id seems to be used by all |
199 | usb enabled GPS devices */ | |
200 | { USB_DEVICE(GARMIN_VENDOR_ID, 3) }, | |
1da177e4 LT |
201 | { } /* Terminating entry */ |
202 | }; | |
af6d780b | 203 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 204 | |
1da177e4 | 205 | |
1da177e4 LT |
206 | static inline int getLayerId(const __u8 *usbPacket) |
207 | { | |
208 | return __le32_to_cpup((__le32 *)(usbPacket)); | |
209 | } | |
210 | ||
211 | static inline int getPacketId(const __u8 *usbPacket) | |
212 | { | |
213 | return __le32_to_cpup((__le32 *)(usbPacket+4)); | |
214 | } | |
215 | ||
216 | static inline int getDataLength(const __u8 *usbPacket) | |
217 | { | |
218 | return __le32_to_cpup((__le32 *)(usbPacket+8)); | |
219 | } | |
220 | ||
221 | ||
222 | /* | |
223 | * check if the usb-packet in buf contains an abort-transfer command. | |
224 | * (if yes, all queued data will be dropped) | |
225 | */ | |
226 | static inline int isAbortTrfCmnd(const unsigned char *buf) | |
227 | { | |
fb571101 MO |
228 | if (memcmp(buf, GARMIN_STOP_TRANSFER_REQ, |
229 | sizeof(GARMIN_STOP_TRANSFER_REQ)) == 0 || | |
230 | memcmp(buf, GARMIN_STOP_TRANSFER_REQ_V2, | |
231 | sizeof(GARMIN_STOP_TRANSFER_REQ_V2)) == 0) | |
1da177e4 LT |
232 | return 1; |
233 | else | |
234 | return 0; | |
235 | } | |
236 | ||
237 | ||
238 | ||
239 | static void send_to_tty(struct usb_serial_port *port, | |
eb6d8c2d | 240 | char *data, unsigned int actual_length) |
1da177e4 | 241 | { |
2e124b4a | 242 | if (actual_length) { |
59d33f2f | 243 | usb_serial_debug_data(&port->dev, __func__, actual_length, data); |
05c7cd39 | 244 | tty_insert_flip_string(&port->port, data, actual_length); |
2e124b4a | 245 | tty_flip_buffer_push(&port->port); |
1da177e4 LT |
246 | } |
247 | } | |
248 | ||
249 | ||
250 | /****************************************************************************** | |
251 | * packet queue handling | |
252 | ******************************************************************************/ | |
253 | ||
254 | /* | |
255 | * queue a received (usb-)packet for later processing | |
256 | */ | |
af6d780b | 257 | static int pkt_add(struct garmin_data *garmin_data_p, |
eb6d8c2d | 258 | unsigned char *data, unsigned int data_length) |
1da177e4 | 259 | { |
eb6d8c2d | 260 | int state = 0; |
1da177e4 LT |
261 | int result = 0; |
262 | unsigned long flags; | |
263 | struct garmin_packet *pkt; | |
264 | ||
cd8c5053 | 265 | /* process only packets containing data ... */ |
1da177e4 | 266 | if (data_length) { |
1da177e4 | 267 | pkt = kmalloc(sizeof(struct garmin_packet)+data_length, |
af6d780b | 268 | GFP_ATOMIC); |
10c642d0 | 269 | if (!pkt) |
1da177e4 | 270 | return 0; |
10c642d0 | 271 | |
1da177e4 LT |
272 | pkt->size = data_length; |
273 | memcpy(pkt->data, data, data_length); | |
274 | ||
275 | spin_lock_irqsave(&garmin_data_p->lock, flags); | |
eb6d8c2d | 276 | garmin_data_p->flags |= FLAGS_QUEUING; |
1da177e4 LT |
277 | result = list_empty(&garmin_data_p->pktlist); |
278 | pkt->seq = garmin_data_p->seq_counter++; | |
279 | list_add_tail(&pkt->list, &garmin_data_p->pktlist); | |
eb6d8c2d | 280 | state = garmin_data_p->state; |
1da177e4 LT |
281 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
282 | ||
7065e826 GKH |
283 | dev_dbg(&garmin_data_p->port->dev, |
284 | "%s - added: pkt: %d - %d bytes\n", __func__, | |
285 | pkt->seq, data_length); | |
b4072f46 | 286 | |
1da177e4 | 287 | /* in serial mode, if someone is waiting for data from |
b4072f46 | 288 | the device, convert and send the next packet to tty. */ |
af6d780b | 289 | if (result && (state == STATE_GSP_WAIT_DATA)) |
1da177e4 | 290 | gsp_next_packet(garmin_data_p); |
1da177e4 LT |
291 | } |
292 | return result; | |
293 | } | |
294 | ||
295 | ||
296 | /* get the next pending packet */ | |
af6d780b | 297 | static struct garmin_packet *pkt_pop(struct garmin_data *garmin_data_p) |
1da177e4 LT |
298 | { |
299 | unsigned long flags; | |
300 | struct garmin_packet *result = NULL; | |
301 | ||
302 | spin_lock_irqsave(&garmin_data_p->lock, flags); | |
303 | if (!list_empty(&garmin_data_p->pktlist)) { | |
304 | result = (struct garmin_packet *)garmin_data_p->pktlist.next; | |
305 | list_del(&result->list); | |
306 | } | |
307 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
308 | return result; | |
309 | } | |
310 | ||
311 | ||
312 | /* free up all queued data */ | |
af6d780b | 313 | static void pkt_clear(struct garmin_data *garmin_data_p) |
1da177e4 LT |
314 | { |
315 | unsigned long flags; | |
316 | struct garmin_packet *result = NULL; | |
317 | ||
1da177e4 LT |
318 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
319 | while (!list_empty(&garmin_data_p->pktlist)) { | |
320 | result = (struct garmin_packet *)garmin_data_p->pktlist.next; | |
321 | list_del(&result->list); | |
322 | kfree(result); | |
323 | } | |
324 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
325 | } | |
326 | ||
327 | ||
328 | /****************************************************************************** | |
329 | * garmin serial protocol handling handling | |
330 | ******************************************************************************/ | |
331 | ||
332 | /* send an ack packet back to the tty */ | |
af6d780b | 333 | static int gsp_send_ack(struct garmin_data *garmin_data_p, __u8 pkt_id) |
1da177e4 LT |
334 | { |
335 | __u8 pkt[10]; | |
eb6d8c2d HK |
336 | __u8 cksum = 0; |
337 | __u8 *ptr = pkt; | |
338 | unsigned l = 0; | |
1da177e4 | 339 | |
7065e826 | 340 | dev_dbg(&garmin_data_p->port->dev, "%s - pkt-id: 0x%X.\n", __func__, |
fb571101 | 341 | pkt_id); |
1da177e4 LT |
342 | |
343 | *ptr++ = DLE; | |
344 | *ptr++ = ACK; | |
345 | cksum += ACK; | |
346 | ||
347 | *ptr++ = 2; | |
348 | cksum += 2; | |
349 | ||
350 | *ptr++ = pkt_id; | |
351 | cksum += pkt_id; | |
352 | ||
af6d780b | 353 | if (pkt_id == DLE) |
1da177e4 | 354 | *ptr++ = DLE; |
1da177e4 LT |
355 | |
356 | *ptr++ = 0; | |
fb571101 | 357 | *ptr++ = (-cksum) & 0xFF; |
1da177e4 LT |
358 | *ptr++ = DLE; |
359 | *ptr++ = ETX; | |
360 | ||
361 | l = ptr-pkt; | |
362 | ||
363 | send_to_tty(garmin_data_p->port, pkt, l); | |
364 | return 0; | |
365 | } | |
366 | ||
367 | ||
368 | ||
369 | /* | |
370 | * called for a complete packet received from tty layer | |
371 | * | |
b4072f46 | 372 | * the complete packet (pktid ... cksum) is in garmin_data_p->inbuf starting |
1da177e4 LT |
373 | * at GSP_INITIAL_OFFSET. |
374 | * | |
375 | * count - number of bytes in the input buffer including space reserved for | |
af6d780b | 376 | * the usb header: GSP_INITIAL_OFFSET + number of bytes in packet |
1da177e4 LT |
377 | * (including pkt-id, data-length a. cksum) |
378 | */ | |
af6d780b | 379 | static int gsp_rec_packet(struct garmin_data *garmin_data_p, int count) |
1da177e4 | 380 | { |
7065e826 | 381 | struct device *dev = &garmin_data_p->port->dev; |
b4026c45 | 382 | unsigned long flags; |
af6d780b | 383 | const __u8 *recpkt = garmin_data_p->inbuffer+GSP_INITIAL_OFFSET; |
eb6d8c2d | 384 | __le32 *usbdata = (__le32 *) garmin_data_p->inbuffer; |
1da177e4 LT |
385 | int cksum = 0; |
386 | int n = 0; | |
387 | int pktid = recpkt[0]; | |
388 | int size = recpkt[1]; | |
389 | ||
59d33f2f GKH |
390 | usb_serial_debug_data(&garmin_data_p->port->dev, __func__, |
391 | count-GSP_INITIAL_OFFSET, recpkt); | |
1da177e4 LT |
392 | |
393 | if (size != (count-GSP_INITIAL_OFFSET-3)) { | |
7065e826 | 394 | dev_dbg(dev, "%s - invalid size, expected %d bytes, got %d\n", |
441b62c1 | 395 | __func__, size, (count-GSP_INITIAL_OFFSET-3)); |
1da177e4 LT |
396 | return -EINVPKT; |
397 | } | |
398 | ||
399 | cksum += *recpkt++; | |
400 | cksum += *recpkt++; | |
401 | ||
af6d780b AC |
402 | /* sanity check, remove after test ... */ |
403 | if ((__u8 *)&(usbdata[3]) != recpkt) { | |
7065e826 GKH |
404 | dev_dbg(dev, "%s - ptr mismatch %p - %p\n", __func__, |
405 | &(usbdata[4]), recpkt); | |
1da177e4 LT |
406 | return -EINVPKT; |
407 | } | |
408 | ||
409 | while (n < size) { | |
410 | cksum += *recpkt++; | |
411 | n++; | |
412 | } | |
413 | ||
fb571101 | 414 | if (((cksum + *recpkt) & 0xff) != 0) { |
7065e826 | 415 | dev_dbg(dev, "%s - invalid checksum, expected %02x, got %02x\n", |
fb571101 | 416 | __func__, -cksum & 0xff, *recpkt); |
eb6d8c2d HK |
417 | return -EINVPKT; |
418 | } | |
1da177e4 LT |
419 | |
420 | usbdata[0] = __cpu_to_le32(GARMIN_LAYERID_APPL); | |
421 | usbdata[1] = __cpu_to_le32(pktid); | |
422 | usbdata[2] = __cpu_to_le32(size); | |
423 | ||
af6d780b | 424 | garmin_write_bulk(garmin_data_p->port, garmin_data_p->inbuffer, |
468d1362 | 425 | GARMIN_PKTHDR_LENGTH+size, 0); |
1da177e4 LT |
426 | |
427 | /* if this was an abort-transfer command, flush all | |
428 | queued data. */ | |
429 | if (isAbortTrfCmnd(garmin_data_p->inbuffer)) { | |
b4026c45 | 430 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1da177e4 | 431 | garmin_data_p->flags |= FLAGS_DROP_DATA; |
b4026c45 | 432 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
1da177e4 LT |
433 | pkt_clear(garmin_data_p); |
434 | } | |
435 | ||
436 | return count; | |
437 | } | |
438 | ||
439 | ||
440 | ||
441 | /* | |
442 | * Called for data received from tty | |
443 | * | |
444 | * buf contains the data read, it may span more than one packet or even | |
445 | * incomplete packets | |
446 | * | |
447 | * input record should be a serial-record, but it may not be complete. | |
448 | * Copy it into our local buffer, until an etx is seen (or an error | |
449 | * occurs). | |
450 | * Once the record is complete, convert into a usb packet and send it | |
451 | * to the bulk pipe, send an ack back to the tty. | |
452 | * | |
453 | * If the input is an ack, just send the last queued packet to the | |
454 | * tty layer. | |
455 | * | |
456 | * if the input is an abort command, drop all queued data. | |
457 | */ | |
458 | ||
af6d780b | 459 | static int gsp_receive(struct garmin_data *garmin_data_p, |
eb6d8c2d | 460 | const unsigned char *buf, int count) |
1da177e4 | 461 | { |
7065e826 | 462 | struct device *dev = &garmin_data_p->port->dev; |
eb6d8c2d | 463 | unsigned long flags; |
1da177e4 LT |
464 | int offs = 0; |
465 | int ack_or_nak_seen = 0; | |
eb6d8c2d HK |
466 | __u8 *dest; |
467 | int size; | |
af6d780b | 468 | /* dleSeen: set if last byte read was a DLE */ |
eb6d8c2d | 469 | int dleSeen; |
af6d780b AC |
470 | /* skip: if set, skip incoming data until possible start of |
471 | * new packet | |
472 | */ | |
eb6d8c2d | 473 | int skip; |
1da177e4 LT |
474 | __u8 data; |
475 | ||
eb6d8c2d HK |
476 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
477 | dest = garmin_data_p->inbuffer; | |
478 | size = garmin_data_p->insize; | |
479 | dleSeen = garmin_data_p->flags & FLAGS_GSP_DLESEEN; | |
480 | skip = garmin_data_p->flags & FLAGS_GSP_SKIP; | |
481 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
482 | ||
7065e826 | 483 | /* dev_dbg(dev, "%s - dle=%d skip=%d size=%d count=%d\n", |
b4072f46 | 484 | __func__, dleSeen, skip, size, count); */ |
1da177e4 | 485 | |
af6d780b | 486 | if (size == 0) |
1da177e4 | 487 | size = GSP_INITIAL_OFFSET; |
1da177e4 LT |
488 | |
489 | while (offs < count) { | |
490 | ||
491 | data = *(buf+offs); | |
af6d780b | 492 | offs++; |
1da177e4 LT |
493 | |
494 | if (data == DLE) { | |
495 | if (skip) { /* start of a new pkt */ | |
496 | skip = 0; | |
497 | size = GSP_INITIAL_OFFSET; | |
498 | dleSeen = 1; | |
499 | } else if (dleSeen) { | |
500 | dest[size++] = data; | |
501 | dleSeen = 0; | |
502 | } else { | |
503 | dleSeen = 1; | |
504 | } | |
505 | } else if (data == ETX) { | |
506 | if (dleSeen) { | |
507 | /* packet complete */ | |
508 | ||
509 | data = dest[GSP_INITIAL_OFFSET]; | |
510 | ||
511 | if (data == ACK) { | |
512 | ack_or_nak_seen = ACK; | |
7065e826 | 513 | dev_dbg(dev, "ACK packet complete.\n"); |
1da177e4 LT |
514 | } else if (data == NAK) { |
515 | ack_or_nak_seen = NAK; | |
7065e826 | 516 | dev_dbg(dev, "NAK packet complete.\n"); |
1da177e4 | 517 | } else { |
7065e826 | 518 | dev_dbg(dev, "packet complete - id=0x%X.\n", |
fb571101 | 519 | data); |
1da177e4 LT |
520 | gsp_rec_packet(garmin_data_p, size); |
521 | } | |
522 | ||
523 | skip = 1; | |
524 | size = GSP_INITIAL_OFFSET; | |
525 | dleSeen = 0; | |
526 | } else { | |
527 | dest[size++] = data; | |
528 | } | |
529 | } else if (!skip) { | |
530 | ||
531 | if (dleSeen) { | |
1da177e4 LT |
532 | size = GSP_INITIAL_OFFSET; |
533 | dleSeen = 0; | |
534 | } | |
535 | ||
536 | dest[size++] = data; | |
537 | } | |
538 | ||
539 | if (size >= GPS_IN_BUFSIZ) { | |
7065e826 | 540 | dev_dbg(dev, "%s - packet too large.\n", __func__); |
1da177e4 LT |
541 | skip = 1; |
542 | size = GSP_INITIAL_OFFSET; | |
543 | dleSeen = 0; | |
544 | } | |
545 | } | |
546 | ||
eb6d8c2d HK |
547 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
548 | ||
1da177e4 LT |
549 | garmin_data_p->insize = size; |
550 | ||
af6d780b | 551 | /* copy flags back to structure */ |
1da177e4 LT |
552 | if (skip) |
553 | garmin_data_p->flags |= FLAGS_GSP_SKIP; | |
554 | else | |
555 | garmin_data_p->flags &= ~FLAGS_GSP_SKIP; | |
556 | ||
557 | if (dleSeen) | |
558 | garmin_data_p->flags |= FLAGS_GSP_DLESEEN; | |
559 | else | |
560 | garmin_data_p->flags &= ~FLAGS_GSP_DLESEEN; | |
561 | ||
eb6d8c2d HK |
562 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
563 | ||
b4072f46 HK |
564 | if (ack_or_nak_seen) { |
565 | if (gsp_next_packet(garmin_data_p) > 0) | |
566 | garmin_data_p->state = STATE_ACTIVE; | |
567 | else | |
568 | garmin_data_p->state = STATE_GSP_WAIT_DATA; | |
569 | } | |
1da177e4 LT |
570 | return count; |
571 | } | |
572 | ||
573 | ||
574 | ||
1da177e4 LT |
575 | /* |
576 | * Sends a usb packet to the tty | |
577 | * | |
578 | * Assumes, that all packages and at an usb-packet boundary. | |
579 | * | |
580 | * return <0 on error, 0 if packet is incomplete or > 0 if packet was sent | |
581 | */ | |
af6d780b | 582 | static int gsp_send(struct garmin_data *garmin_data_p, |
1da177e4 LT |
583 | const unsigned char *buf, int count) |
584 | { | |
7065e826 | 585 | struct device *dev = &garmin_data_p->port->dev; |
1da177e4 LT |
586 | const unsigned char *src; |
587 | unsigned char *dst; | |
588 | int pktid = 0; | |
589 | int datalen = 0; | |
590 | int cksum = 0; | |
af6d780b | 591 | int i = 0; |
1da177e4 LT |
592 | int k; |
593 | ||
7065e826 GKH |
594 | dev_dbg(dev, "%s - state %d - %d bytes.\n", __func__, |
595 | garmin_data_p->state, count); | |
1da177e4 LT |
596 | |
597 | k = garmin_data_p->outsize; | |
598 | if ((k+count) > GPS_OUT_BUFSIZ) { | |
7065e826 | 599 | dev_dbg(dev, "packet too large\n"); |
1da177e4 LT |
600 | garmin_data_p->outsize = 0; |
601 | return -4; | |
602 | } | |
603 | ||
604 | memcpy(garmin_data_p->outbuffer+k, buf, count); | |
605 | k += count; | |
606 | garmin_data_p->outsize = k; | |
607 | ||
608 | if (k >= GARMIN_PKTHDR_LENGTH) { | |
609 | pktid = getPacketId(garmin_data_p->outbuffer); | |
af6d780b | 610 | datalen = getDataLength(garmin_data_p->outbuffer); |
1da177e4 LT |
611 | i = GARMIN_PKTHDR_LENGTH + datalen; |
612 | if (k < i) | |
613 | return 0; | |
614 | } else { | |
615 | return 0; | |
616 | } | |
617 | ||
7065e826 | 618 | dev_dbg(dev, "%s - %d bytes in buffer, %d bytes in pkt.\n", __func__, k, i); |
1da177e4 LT |
619 | |
620 | /* garmin_data_p->outbuffer now contains a complete packet */ | |
621 | ||
59d33f2f GKH |
622 | usb_serial_debug_data(&garmin_data_p->port->dev, __func__, k, |
623 | garmin_data_p->outbuffer); | |
1da177e4 LT |
624 | |
625 | garmin_data_p->outsize = 0; | |
626 | ||
fb571101 | 627 | if (getLayerId(garmin_data_p->outbuffer) != GARMIN_LAYERID_APPL) { |
7065e826 | 628 | dev_dbg(dev, "not an application packet (%d)\n", |
af6d780b | 629 | getLayerId(garmin_data_p->outbuffer)); |
1da177e4 LT |
630 | return -1; |
631 | } | |
632 | ||
633 | if (pktid > 255) { | |
7065e826 | 634 | dev_dbg(dev, "packet-id %d too large\n", pktid); |
1da177e4 LT |
635 | return -2; |
636 | } | |
637 | ||
638 | if (datalen > 255) { | |
7065e826 | 639 | dev_dbg(dev, "packet-size %d too large\n", datalen); |
1da177e4 LT |
640 | return -3; |
641 | } | |
642 | ||
643 | /* the serial protocol should be able to handle this packet */ | |
644 | ||
645 | k = 0; | |
646 | src = garmin_data_p->outbuffer+GARMIN_PKTHDR_LENGTH; | |
af6d780b | 647 | for (i = 0; i < datalen; i++) { |
1da177e4 LT |
648 | if (*src++ == DLE) |
649 | k++; | |
650 | } | |
651 | ||
652 | src = garmin_data_p->outbuffer+GARMIN_PKTHDR_LENGTH; | |
653 | if (k > (GARMIN_PKTHDR_LENGTH-2)) { | |
af6d780b | 654 | /* can't add stuffing DLEs in place, move data to end |
eb6d8c2d | 655 | of buffer ... */ |
1da177e4 LT |
656 | dst = garmin_data_p->outbuffer+GPS_OUT_BUFSIZ-datalen; |
657 | memcpy(dst, src, datalen); | |
658 | src = dst; | |
659 | } | |
660 | ||
661 | dst = garmin_data_p->outbuffer; | |
662 | ||
663 | *dst++ = DLE; | |
664 | *dst++ = pktid; | |
665 | cksum += pktid; | |
666 | *dst++ = datalen; | |
667 | cksum += datalen; | |
668 | if (datalen == DLE) | |
669 | *dst++ = DLE; | |
670 | ||
af6d780b | 671 | for (i = 0; i < datalen; i++) { |
1da177e4 LT |
672 | __u8 c = *src++; |
673 | *dst++ = c; | |
674 | cksum += c; | |
675 | if (c == DLE) | |
676 | *dst++ = DLE; | |
677 | } | |
af6d780b | 678 | |
fb571101 | 679 | cksum = -cksum & 0xFF; |
1da177e4 LT |
680 | *dst++ = cksum; |
681 | if (cksum == DLE) | |
682 | *dst++ = DLE; | |
683 | *dst++ = DLE; | |
684 | *dst++ = ETX; | |
685 | ||
686 | i = dst-garmin_data_p->outbuffer; | |
687 | ||
688 | send_to_tty(garmin_data_p->port, garmin_data_p->outbuffer, i); | |
689 | ||
690 | garmin_data_p->pkt_id = pktid; | |
691 | garmin_data_p->state = STATE_WAIT_TTY_ACK; | |
692 | ||
693 | return i; | |
694 | } | |
695 | ||
696 | ||
1da177e4 LT |
697 | /* |
698 | * Process the next pending data packet - if there is one | |
699 | */ | |
b4072f46 | 700 | static int gsp_next_packet(struct garmin_data *garmin_data_p) |
1da177e4 | 701 | { |
b4072f46 | 702 | int result = 0; |
1da177e4 LT |
703 | struct garmin_packet *pkt = NULL; |
704 | ||
705 | while ((pkt = pkt_pop(garmin_data_p)) != NULL) { | |
7065e826 | 706 | dev_dbg(&garmin_data_p->port->dev, "%s - next pkt: %d\n", __func__, pkt->seq); |
b4072f46 HK |
707 | result = gsp_send(garmin_data_p, pkt->data, pkt->size); |
708 | if (result > 0) { | |
1da177e4 | 709 | kfree(pkt); |
b4072f46 | 710 | return result; |
1da177e4 LT |
711 | } |
712 | kfree(pkt); | |
713 | } | |
b4072f46 | 714 | return result; |
1da177e4 LT |
715 | } |
716 | ||
717 | ||
718 | ||
1da177e4 LT |
719 | /****************************************************************************** |
720 | * garmin native mode | |
721 | ******************************************************************************/ | |
722 | ||
723 | ||
724 | /* | |
725 | * Called for data received from tty | |
726 | * | |
727 | * The input data is expected to be in garmin usb-packet format. | |
728 | * | |
729 | * buf contains the data read, it may span more than one packet | |
730 | * or even incomplete packets | |
731 | */ | |
af6d780b | 732 | static int nat_receive(struct garmin_data *garmin_data_p, |
eb6d8c2d | 733 | const unsigned char *buf, int count) |
1da177e4 | 734 | { |
eb6d8c2d | 735 | unsigned long flags; |
af6d780b | 736 | __u8 *dest; |
1da177e4 LT |
737 | int offs = 0; |
738 | int result = count; | |
739 | int len; | |
740 | ||
741 | while (offs < count) { | |
af6d780b | 742 | /* if buffer contains header, copy rest of data */ |
1da177e4 LT |
743 | if (garmin_data_p->insize >= GARMIN_PKTHDR_LENGTH) |
744 | len = GARMIN_PKTHDR_LENGTH | |
745 | +getDataLength(garmin_data_p->inbuffer); | |
746 | else | |
747 | len = GARMIN_PKTHDR_LENGTH; | |
748 | ||
749 | if (len >= GPS_IN_BUFSIZ) { | |
af6d780b AC |
750 | /* seems to be an invalid packet, ignore rest |
751 | of input */ | |
7065e826 GKH |
752 | dev_dbg(&garmin_data_p->port->dev, |
753 | "%s - packet size too large: %d\n", | |
754 | __func__, len); | |
1da177e4 LT |
755 | garmin_data_p->insize = 0; |
756 | count = 0; | |
757 | result = -EINVPKT; | |
758 | } else { | |
759 | len -= garmin_data_p->insize; | |
760 | if (len > (count-offs)) | |
761 | len = (count-offs); | |
762 | if (len > 0) { | |
763 | dest = garmin_data_p->inbuffer | |
af6d780b | 764 | + garmin_data_p->insize; |
1da177e4 LT |
765 | memcpy(dest, buf+offs, len); |
766 | garmin_data_p->insize += len; | |
767 | offs += len; | |
768 | } | |
769 | } | |
770 | ||
771 | /* do we have a complete packet ? */ | |
772 | if (garmin_data_p->insize >= GARMIN_PKTHDR_LENGTH) { | |
773 | len = GARMIN_PKTHDR_LENGTH+ | |
774 | getDataLength(garmin_data_p->inbuffer); | |
775 | if (garmin_data_p->insize >= len) { | |
af6d780b AC |
776 | garmin_write_bulk(garmin_data_p->port, |
777 | garmin_data_p->inbuffer, | |
778 | len, 0); | |
1da177e4 LT |
779 | garmin_data_p->insize = 0; |
780 | ||
781 | /* if this was an abort-transfer command, | |
782 | flush all queued data. */ | |
783 | if (isAbortTrfCmnd(garmin_data_p->inbuffer)) { | |
af6d780b AC |
784 | spin_lock_irqsave(&garmin_data_p->lock, |
785 | flags); | |
1da177e4 | 786 | garmin_data_p->flags |= FLAGS_DROP_DATA; |
af6d780b AC |
787 | spin_unlock_irqrestore( |
788 | &garmin_data_p->lock, flags); | |
1da177e4 LT |
789 | pkt_clear(garmin_data_p); |
790 | } | |
791 | } | |
792 | } | |
793 | } | |
794 | return result; | |
795 | } | |
796 | ||
797 | ||
798 | /****************************************************************************** | |
799 | * private packets | |
800 | ******************************************************************************/ | |
801 | ||
802 | static void priv_status_resp(struct usb_serial_port *port) | |
803 | { | |
af6d780b | 804 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 LT |
805 | __le32 *pkt = (__le32 *)garmin_data_p->privpkt; |
806 | ||
807 | pkt[0] = __cpu_to_le32(GARMIN_LAYERID_PRIVATE); | |
808 | pkt[1] = __cpu_to_le32(PRIV_PKTID_INFO_RESP); | |
809 | pkt[2] = __cpu_to_le32(12); | |
810 | pkt[3] = __cpu_to_le32(VERSION_MAJOR << 16 | VERSION_MINOR); | |
811 | pkt[4] = __cpu_to_le32(garmin_data_p->mode); | |
812 | pkt[5] = __cpu_to_le32(garmin_data_p->serial_num); | |
813 | ||
af6d780b | 814 | send_to_tty(port, (__u8 *)pkt, 6 * 4); |
1da177e4 LT |
815 | } |
816 | ||
817 | ||
818 | /****************************************************************************** | |
819 | * Garmin specific driver functions | |
820 | ******************************************************************************/ | |
821 | ||
822 | static int process_resetdev_request(struct usb_serial_port *port) | |
823 | { | |
eb6d8c2d | 824 | unsigned long flags; |
1da177e4 | 825 | int status; |
af6d780b | 826 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 | 827 | |
eb6d8c2d | 828 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1da177e4 LT |
829 | garmin_data_p->flags &= ~(CLEAR_HALT_REQUIRED); |
830 | garmin_data_p->state = STATE_RESET; | |
831 | garmin_data_p->serial_num = 0; | |
eb6d8c2d | 832 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
1da177e4 | 833 | |
af6d780b | 834 | usb_kill_urb(port->interrupt_in_urb); |
7065e826 | 835 | dev_dbg(&port->dev, "%s - usb_reset_device\n", __func__); |
1da177e4 LT |
836 | status = usb_reset_device(port->serial->dev); |
837 | if (status) | |
7065e826 | 838 | dev_dbg(&port->dev, "%s - usb_reset_device failed: %d\n", |
441b62c1 | 839 | __func__, status); |
1da177e4 LT |
840 | return status; |
841 | } | |
842 | ||
843 | ||
844 | ||
845 | /* | |
846 | * clear all cached data | |
847 | */ | |
af6d780b | 848 | static int garmin_clear(struct garmin_data *garmin_data_p) |
1da177e4 | 849 | { |
eb6d8c2d | 850 | unsigned long flags; |
1da177e4 | 851 | |
1da177e4 LT |
852 | /* flush all queued data */ |
853 | pkt_clear(garmin_data_p); | |
854 | ||
eb6d8c2d | 855 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1da177e4 LT |
856 | garmin_data_p->insize = 0; |
857 | garmin_data_p->outsize = 0; | |
eb6d8c2d | 858 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
1da177e4 | 859 | |
0f3083af | 860 | return 0; |
1da177e4 LT |
861 | } |
862 | ||
863 | ||
1da177e4 LT |
864 | static int garmin_init_session(struct usb_serial_port *port) |
865 | { | |
af6d780b | 866 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
9eabd28e JH |
867 | int status; |
868 | int i; | |
1da177e4 | 869 | |
9eabd28e | 870 | usb_kill_urb(port->interrupt_in_urb); |
1da177e4 | 871 | |
9eabd28e JH |
872 | status = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
873 | if (status) { | |
874 | dev_err(&port->dev, "failed to submit interrupt urb: %d\n", | |
875 | status); | |
876 | return status; | |
1da177e4 LT |
877 | } |
878 | ||
b4072f46 HK |
879 | /* |
880 | * using the initialization method from gpsbabel. See comments in | |
881 | * gpsbabel/jeeps/gpslibusb.c gusb_reset_toggles() | |
882 | */ | |
9eabd28e JH |
883 | dev_dbg(&port->dev, "%s - starting session ...\n", __func__); |
884 | garmin_data_p->state = STATE_ACTIVE; | |
b4072f46 | 885 | |
9eabd28e JH |
886 | for (i = 0; i < 3; i++) { |
887 | status = garmin_write_bulk(port, GARMIN_START_SESSION_REQ, | |
888 | sizeof(GARMIN_START_SESSION_REQ), 0); | |
889 | if (status < 0) | |
890 | goto err_kill_urbs; | |
1da177e4 LT |
891 | } |
892 | ||
9eabd28e | 893 | return 0; |
19a565d9 JH |
894 | |
895 | err_kill_urbs: | |
896 | usb_kill_anchored_urbs(&garmin_data_p->write_urbs); | |
897 | usb_kill_urb(port->interrupt_in_urb); | |
898 | ||
1da177e4 LT |
899 | return status; |
900 | } | |
901 | ||
902 | ||
903 | ||
a509a7e4 | 904 | static int garmin_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 905 | { |
eb6d8c2d | 906 | unsigned long flags; |
1da177e4 | 907 | int status = 0; |
af6d780b | 908 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 | 909 | |
eb6d8c2d | 910 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1da177e4 LT |
911 | garmin_data_p->mode = initial_mode; |
912 | garmin_data_p->count = 0; | |
b4026c45 | 913 | garmin_data_p->flags &= FLAGS_SESSION_REPLY1_SEEN; |
eb6d8c2d | 914 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
1da177e4 LT |
915 | |
916 | /* shutdown any bulk reads that might be going on */ | |
af6d780b | 917 | usb_kill_urb(port->read_urb); |
1da177e4 | 918 | |
95da310e | 919 | if (garmin_data_p->state == STATE_RESET) |
1da177e4 | 920 | status = garmin_init_session(port); |
1da177e4 LT |
921 | |
922 | garmin_data_p->state = STATE_ACTIVE; | |
1da177e4 LT |
923 | return status; |
924 | } | |
925 | ||
926 | ||
335f8514 | 927 | static void garmin_close(struct usb_serial_port *port) |
1da177e4 | 928 | { |
af6d780b | 929 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 | 930 | |
1143832e GKH |
931 | dev_dbg(&port->dev, "%s - mode=%d state=%d flags=0x%X\n", |
932 | __func__, garmin_data_p->mode, garmin_data_p->state, | |
933 | garmin_data_p->flags); | |
1da177e4 | 934 | |
618aa106 | 935 | garmin_clear(garmin_data_p); |
1da177e4 LT |
936 | |
937 | /* shutdown our urbs */ | |
af6d780b | 938 | usb_kill_urb(port->read_urb); |
19a565d9 | 939 | usb_kill_anchored_urbs(&garmin_data_p->write_urbs); |
1da177e4 | 940 | |
b4072f46 HK |
941 | /* keep reset state so we know that we must start a new session */ |
942 | if (garmin_data_p->state != STATE_RESET) | |
1da177e4 | 943 | garmin_data_p->state = STATE_DISCONNECTED; |
1da177e4 LT |
944 | } |
945 | ||
b4072f46 | 946 | |
af6d780b | 947 | static void garmin_write_bulk_callback(struct urb *urb) |
1da177e4 | 948 | { |
cdc97792 | 949 | struct usb_serial_port *port = urb->context; |
1da177e4 | 950 | |
468d1362 | 951 | if (port) { |
af6d780b AC |
952 | struct garmin_data *garmin_data_p = |
953 | usb_get_serial_port_data(port); | |
1da177e4 | 954 | |
fb571101 | 955 | if (getLayerId(urb->transfer_buffer) == GARMIN_LAYERID_APPL) { |
468d1362 | 956 | |
b4072f46 HK |
957 | if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { |
958 | gsp_send_ack(garmin_data_p, | |
959 | ((__u8 *)urb->transfer_buffer)[4]); | |
960 | } | |
468d1362 | 961 | } |
468d1362 | 962 | usb_serial_port_softint(port); |
1da177e4 LT |
963 | } |
964 | ||
af6d780b AC |
965 | /* Ignore errors that resulted from garmin_write_bulk with |
966 | dismiss_ack = 1 */ | |
468d1362 HK |
967 | |
968 | /* free up the transfer buffer, as usb_free_urb() does not do this */ | |
af6d780b | 969 | kfree(urb->transfer_buffer); |
1da177e4 LT |
970 | } |
971 | ||
972 | ||
af6d780b | 973 | static int garmin_write_bulk(struct usb_serial_port *port, |
468d1362 HK |
974 | const unsigned char *buf, int count, |
975 | int dismiss_ack) | |
1da177e4 | 976 | { |
eb6d8c2d | 977 | unsigned long flags; |
1da177e4 | 978 | struct usb_serial *serial = port->serial; |
af6d780b | 979 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 LT |
980 | struct urb *urb; |
981 | unsigned char *buffer; | |
982 | int status; | |
983 | ||
eb6d8c2d | 984 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1da177e4 | 985 | garmin_data_p->flags &= ~FLAGS_DROP_DATA; |
eb6d8c2d | 986 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
1da177e4 | 987 | |
af6d780b | 988 | buffer = kmalloc(count, GFP_ATOMIC); |
10c642d0 | 989 | if (!buffer) |
1da177e4 | 990 | return -ENOMEM; |
1da177e4 LT |
991 | |
992 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
993 | if (!urb) { | |
af6d780b | 994 | kfree(buffer); |
1da177e4 LT |
995 | return -ENOMEM; |
996 | } | |
997 | ||
af6d780b | 998 | memcpy(buffer, buf, count); |
1da177e4 | 999 | |
59d33f2f | 1000 | usb_serial_debug_data(&port->dev, __func__, count, buffer); |
1da177e4 | 1001 | |
af6d780b AC |
1002 | usb_fill_bulk_urb(urb, serial->dev, |
1003 | usb_sndbulkpipe(serial->dev, | |
1004 | port->bulk_out_endpointAddress), | |
1da177e4 | 1005 | buffer, count, |
468d1362 HK |
1006 | garmin_write_bulk_callback, |
1007 | dismiss_ack ? NULL : port); | |
1da177e4 LT |
1008 | urb->transfer_flags |= URB_ZERO_PACKET; |
1009 | ||
fb571101 | 1010 | if (getLayerId(buffer) == GARMIN_LAYERID_APPL) { |
b4072f46 HK |
1011 | |
1012 | spin_lock_irqsave(&garmin_data_p->lock, flags); | |
1013 | garmin_data_p->flags |= APP_REQ_SEEN; | |
1014 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
1015 | ||
1da177e4 LT |
1016 | if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { |
1017 | pkt_clear(garmin_data_p); | |
1018 | garmin_data_p->state = STATE_GSP_WAIT_DATA; | |
1019 | } | |
1020 | } | |
1021 | ||
1022 | /* send it down the pipe */ | |
19a565d9 | 1023 | usb_anchor_urb(urb, &garmin_data_p->write_urbs); |
1da177e4 LT |
1024 | status = usb_submit_urb(urb, GFP_ATOMIC); |
1025 | if (status) { | |
1026 | dev_err(&port->dev, | |
af6d780b | 1027 | "%s - usb_submit_urb(write bulk) failed with status = %d\n", |
441b62c1 | 1028 | __func__, status); |
1da177e4 | 1029 | count = status; |
19a565d9 | 1030 | usb_unanchor_urb(urb); |
c4ac4496 | 1031 | kfree(buffer); |
1da177e4 LT |
1032 | } |
1033 | ||
1034 | /* we are done with this urb, so let the host driver | |
1035 | * really free it when it is finished with it */ | |
af6d780b | 1036 | usb_free_urb(urb); |
1da177e4 LT |
1037 | |
1038 | return count; | |
1039 | } | |
1040 | ||
af6d780b | 1041 | static int garmin_write(struct tty_struct *tty, struct usb_serial_port *port, |
95da310e | 1042 | const unsigned char *buf, int count) |
1da177e4 | 1043 | { |
7065e826 | 1044 | struct device *dev = &port->dev; |
1da177e4 | 1045 | int pktid, pktsiz, len; |
af6d780b | 1046 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 LT |
1047 | __le32 *privpkt = (__le32 *)garmin_data_p->privpkt; |
1048 | ||
59d33f2f | 1049 | usb_serial_debug_data(dev, __func__, count, buf); |
1da177e4 | 1050 | |
b4072f46 HK |
1051 | if (garmin_data_p->state == STATE_RESET) |
1052 | return -EIO; | |
1053 | ||
1da177e4 LT |
1054 | /* check for our private packets */ |
1055 | if (count >= GARMIN_PKTHDR_LENGTH) { | |
1da177e4 LT |
1056 | len = PRIVPKTSIZ; |
1057 | if (count < len) | |
1058 | len = count; | |
1059 | ||
1060 | memcpy(garmin_data_p->privpkt, buf, len); | |
1061 | ||
1062 | pktsiz = getDataLength(garmin_data_p->privpkt); | |
1063 | pktid = getPacketId(garmin_data_p->privpkt); | |
1064 | ||
fb571101 MO |
1065 | if (count == (GARMIN_PKTHDR_LENGTH + pktsiz) && |
1066 | getLayerId(garmin_data_p->privpkt) == | |
1067 | GARMIN_LAYERID_PRIVATE) { | |
1da177e4 | 1068 | |
7065e826 | 1069 | dev_dbg(dev, "%s - processing private request %d\n", |
441b62c1 | 1070 | __func__, pktid); |
1da177e4 | 1071 | |
af6d780b | 1072 | /* drop all unfinished transfers */ |
1da177e4 LT |
1073 | garmin_clear(garmin_data_p); |
1074 | ||
af6d780b | 1075 | switch (pktid) { |
1da177e4 LT |
1076 | case PRIV_PKTID_SET_MODE: |
1077 | if (pktsiz != 4) | |
1078 | return -EINVPKT; | |
1079 | garmin_data_p->mode = __le32_to_cpu(privpkt[3]); | |
7065e826 | 1080 | dev_dbg(dev, "%s - mode set to %d\n", |
441b62c1 | 1081 | __func__, garmin_data_p->mode); |
1da177e4 LT |
1082 | break; |
1083 | ||
1084 | case PRIV_PKTID_INFO_REQ: | |
1085 | priv_status_resp(port); | |
1086 | break; | |
1087 | ||
1088 | case PRIV_PKTID_RESET_REQ: | |
b4072f46 | 1089 | process_resetdev_request(port); |
1da177e4 LT |
1090 | break; |
1091 | ||
1092 | case PRIV_PKTID_SET_DEF_MODE: | |
1093 | if (pktsiz != 4) | |
1094 | return -EINVPKT; | |
1095 | initial_mode = __le32_to_cpu(privpkt[3]); | |
7065e826 | 1096 | dev_dbg(dev, "%s - initial_mode set to %d\n", |
441b62c1 | 1097 | __func__, |
1da177e4 LT |
1098 | garmin_data_p->mode); |
1099 | break; | |
1100 | } | |
1101 | return count; | |
1102 | } | |
1103 | } | |
1104 | ||
1105 | if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { | |
1106 | return gsp_receive(garmin_data_p, buf, count); | |
1107 | } else { /* MODE_NATIVE */ | |
1108 | return nat_receive(garmin_data_p, buf, count); | |
1109 | } | |
1110 | } | |
1111 | ||
1112 | ||
95da310e | 1113 | static int garmin_write_room(struct tty_struct *tty) |
1da177e4 | 1114 | { |
95da310e | 1115 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1116 | /* |
1117 | * Report back the bytes currently available in the output buffer. | |
1118 | */ | |
af6d780b | 1119 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 LT |
1120 | return GPS_OUT_BUFSIZ-garmin_data_p->outsize; |
1121 | } | |
1122 | ||
1123 | ||
af6d780b | 1124 | static void garmin_read_process(struct garmin_data *garmin_data_p, |
b4026c45 HK |
1125 | unsigned char *data, unsigned data_length, |
1126 | int bulk_data) | |
1da177e4 | 1127 | { |
b4072f46 HK |
1128 | unsigned long flags; |
1129 | ||
1da177e4 | 1130 | if (garmin_data_p->flags & FLAGS_DROP_DATA) { |
cd8c5053 | 1131 | /* abort-transfer cmd is active */ |
7065e826 | 1132 | dev_dbg(&garmin_data_p->port->dev, "%s - pkt dropped\n", __func__); |
1da177e4 | 1133 | } else if (garmin_data_p->state != STATE_DISCONNECTED && |
af6d780b | 1134 | garmin_data_p->state != STATE_RESET) { |
1da177e4 | 1135 | |
1da177e4 | 1136 | /* if throttling is active or postprecessing is required |
eb6d8c2d | 1137 | put the received data in the input queue, otherwise |
1da177e4 LT |
1138 | send it directly to the tty port */ |
1139 | if (garmin_data_p->flags & FLAGS_QUEUING) { | |
1140 | pkt_add(garmin_data_p, data, data_length); | |
7065e826 | 1141 | } else if (bulk_data || |
b4026c45 | 1142 | getLayerId(data) == GARMIN_LAYERID_APPL) { |
b4072f46 HK |
1143 | |
1144 | spin_lock_irqsave(&garmin_data_p->lock, flags); | |
1145 | garmin_data_p->flags |= APP_RESP_SEEN; | |
1146 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
1147 | ||
1148 | if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { | |
1da177e4 | 1149 | pkt_add(garmin_data_p, data, data_length); |
b4072f46 HK |
1150 | } else { |
1151 | send_to_tty(garmin_data_p->port, data, | |
1152 | data_length); | |
1153 | } | |
1da177e4 | 1154 | } |
b4072f46 | 1155 | /* ignore system layer packets ... */ |
1da177e4 LT |
1156 | } |
1157 | } | |
1158 | ||
1159 | ||
af6d780b | 1160 | static void garmin_read_bulk_callback(struct urb *urb) |
1da177e4 | 1161 | { |
eb6d8c2d | 1162 | unsigned long flags; |
cdc97792 | 1163 | struct usb_serial_port *port = urb->context; |
af6d780b | 1164 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 | 1165 | unsigned char *data = urb->transfer_buffer; |
f9feb517 GKH |
1166 | int status = urb->status; |
1167 | int retval; | |
1da177e4 | 1168 | |
f9feb517 | 1169 | if (status) { |
7065e826 | 1170 | dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", |
441b62c1 | 1171 | __func__, status); |
1da177e4 LT |
1172 | return; |
1173 | } | |
1174 | ||
59d33f2f | 1175 | usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); |
1da177e4 | 1176 | |
b4026c45 | 1177 | garmin_read_process(garmin_data_p, data, urb->actual_length, 1); |
1da177e4 | 1178 | |
eb6d8c2d | 1179 | if (urb->actual_length == 0 && |
fb571101 | 1180 | (garmin_data_p->flags & FLAGS_BULK_IN_RESTART) != 0) { |
eb6d8c2d HK |
1181 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1182 | garmin_data_p->flags &= ~FLAGS_BULK_IN_RESTART; | |
1183 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
f9feb517 GKH |
1184 | retval = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
1185 | if (retval) | |
1da177e4 LT |
1186 | dev_err(&port->dev, |
1187 | "%s - failed resubmitting read urb, error %d\n", | |
441b62c1 | 1188 | __func__, retval); |
eb6d8c2d HK |
1189 | } else if (urb->actual_length > 0) { |
1190 | /* Continue trying to read until nothing more is received */ | |
fb571101 | 1191 | if ((garmin_data_p->flags & FLAGS_THROTTLED) == 0) { |
f9feb517 GKH |
1192 | retval = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
1193 | if (retval) | |
eb6d8c2d | 1194 | dev_err(&port->dev, |
7065e826 GKH |
1195 | "%s - failed resubmitting read urb, error %d\n", |
1196 | __func__, retval); | |
eb6d8c2d HK |
1197 | } |
1198 | } else { | |
7065e826 | 1199 | dev_dbg(&port->dev, "%s - end of bulk data\n", __func__); |
eb6d8c2d HK |
1200 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1201 | garmin_data_p->flags &= ~FLAGS_BULK_IN_ACTIVE; | |
1202 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
1da177e4 | 1203 | } |
1da177e4 LT |
1204 | } |
1205 | ||
1206 | ||
af6d780b | 1207 | static void garmin_read_int_callback(struct urb *urb) |
1da177e4 | 1208 | { |
eb6d8c2d | 1209 | unsigned long flags; |
f9feb517 | 1210 | int retval; |
cdc97792 | 1211 | struct usb_serial_port *port = urb->context; |
af6d780b | 1212 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 | 1213 | unsigned char *data = urb->transfer_buffer; |
f9feb517 | 1214 | int status = urb->status; |
1da177e4 | 1215 | |
f9feb517 | 1216 | switch (status) { |
1da177e4 LT |
1217 | case 0: |
1218 | /* success */ | |
1219 | break; | |
1220 | case -ECONNRESET: | |
1221 | case -ENOENT: | |
1222 | case -ESHUTDOWN: | |
1223 | /* this urb is terminated, clean up */ | |
7065e826 | 1224 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", |
441b62c1 | 1225 | __func__, status); |
1da177e4 LT |
1226 | return; |
1227 | default: | |
7065e826 | 1228 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", |
441b62c1 | 1229 | __func__, status); |
1da177e4 LT |
1230 | return; |
1231 | } | |
1232 | ||
59d33f2f GKH |
1233 | usb_serial_debug_data(&port->dev, __func__, urb->actual_length, |
1234 | urb->transfer_buffer); | |
1da177e4 LT |
1235 | |
1236 | if (urb->actual_length == sizeof(GARMIN_BULK_IN_AVAIL_REPLY) && | |
fb571101 MO |
1237 | memcmp(data, GARMIN_BULK_IN_AVAIL_REPLY, |
1238 | sizeof(GARMIN_BULK_IN_AVAIL_REPLY)) == 0) { | |
1da177e4 | 1239 | |
7065e826 | 1240 | dev_dbg(&port->dev, "%s - bulk data available.\n", __func__); |
1da177e4 | 1241 | |
fb571101 | 1242 | if ((garmin_data_p->flags & FLAGS_BULK_IN_ACTIVE) == 0) { |
eb6d8c2d HK |
1243 | |
1244 | /* bulk data available */ | |
f9feb517 GKH |
1245 | retval = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
1246 | if (retval) { | |
eb6d8c2d | 1247 | dev_err(&port->dev, |
af6d780b AC |
1248 | "%s - failed submitting read urb, error %d\n", |
1249 | __func__, retval); | |
eb6d8c2d HK |
1250 | } else { |
1251 | spin_lock_irqsave(&garmin_data_p->lock, flags); | |
1252 | garmin_data_p->flags |= FLAGS_BULK_IN_ACTIVE; | |
af6d780b AC |
1253 | spin_unlock_irqrestore(&garmin_data_p->lock, |
1254 | flags); | |
eb6d8c2d HK |
1255 | } |
1256 | } else { | |
1257 | /* bulk-in transfer still active */ | |
1258 | spin_lock_irqsave(&garmin_data_p->lock, flags); | |
1259 | garmin_data_p->flags |= FLAGS_BULK_IN_RESTART; | |
1260 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); | |
1da177e4 LT |
1261 | } |
1262 | ||
1263 | } else if (urb->actual_length == (4+sizeof(GARMIN_START_SESSION_REPLY)) | |
fb571101 MO |
1264 | && memcmp(data, GARMIN_START_SESSION_REPLY, |
1265 | sizeof(GARMIN_START_SESSION_REPLY)) == 0) { | |
1da177e4 | 1266 | |
eb6d8c2d | 1267 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1da177e4 | 1268 | garmin_data_p->flags |= FLAGS_SESSION_REPLY1_SEEN; |
eb6d8c2d | 1269 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
1da177e4 LT |
1270 | |
1271 | /* save the serial number */ | |
af6d780b AC |
1272 | garmin_data_p->serial_num = __le32_to_cpup( |
1273 | (__le32 *)(data+GARMIN_PKTHDR_LENGTH)); | |
1da177e4 | 1274 | |
7065e826 | 1275 | dev_dbg(&port->dev, "%s - start-of-session reply seen - serial %u.\n", |
441b62c1 | 1276 | __func__, garmin_data_p->serial_num); |
1da177e4 LT |
1277 | } |
1278 | ||
b4026c45 | 1279 | garmin_read_process(garmin_data_p, data, urb->actual_length, 0); |
1da177e4 | 1280 | |
af6d780b | 1281 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
f9feb517 | 1282 | if (retval) |
1da177e4 LT |
1283 | dev_err(&urb->dev->dev, |
1284 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 1285 | __func__, retval); |
1da177e4 LT |
1286 | } |
1287 | ||
1288 | ||
1289 | /* | |
1290 | * Sends the next queued packt to the tty port (garmin native mode only) | |
1291 | * and then sets a timer to call itself again until all queued data | |
1292 | * is sent. | |
1293 | */ | |
af6d780b | 1294 | static int garmin_flush_queue(struct garmin_data *garmin_data_p) |
1da177e4 | 1295 | { |
eb6d8c2d | 1296 | unsigned long flags; |
1da177e4 LT |
1297 | struct garmin_packet *pkt; |
1298 | ||
1299 | if ((garmin_data_p->flags & FLAGS_THROTTLED) == 0) { | |
1300 | pkt = pkt_pop(garmin_data_p); | |
1301 | if (pkt != NULL) { | |
1da177e4 LT |
1302 | send_to_tty(garmin_data_p->port, pkt->data, pkt->size); |
1303 | kfree(pkt); | |
1304 | mod_timer(&garmin_data_p->timer, (1)+jiffies); | |
1305 | ||
1306 | } else { | |
eb6d8c2d | 1307 | spin_lock_irqsave(&garmin_data_p->lock, flags); |
1da177e4 | 1308 | garmin_data_p->flags &= ~FLAGS_QUEUING; |
eb6d8c2d | 1309 | spin_unlock_irqrestore(&garmin_data_p->lock, flags); |
1da177e4 LT |
1310 | } |
1311 | } | |
1312 | return 0; | |
1313 | } | |
1314 | ||
1315 | ||
95da310e | 1316 | static void garmin_throttle(struct tty_struct *tty) |
1da177e4 | 1317 | { |
95da310e | 1318 | struct usb_serial_port *port = tty->driver_data; |
af6d780b | 1319 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 | 1320 | |
1da177e4 LT |
1321 | /* set flag, data received will be put into a queue |
1322 | for later processing */ | |
63832515 | 1323 | spin_lock_irq(&garmin_data_p->lock); |
1da177e4 | 1324 | garmin_data_p->flags |= FLAGS_QUEUING|FLAGS_THROTTLED; |
63832515 | 1325 | spin_unlock_irq(&garmin_data_p->lock); |
1da177e4 LT |
1326 | } |
1327 | ||
1328 | ||
af6d780b | 1329 | static void garmin_unthrottle(struct tty_struct *tty) |
1da177e4 | 1330 | { |
95da310e | 1331 | struct usb_serial_port *port = tty->driver_data; |
af6d780b | 1332 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
eb6d8c2d | 1333 | int status; |
1da177e4 | 1334 | |
63832515 | 1335 | spin_lock_irq(&garmin_data_p->lock); |
1da177e4 | 1336 | garmin_data_p->flags &= ~FLAGS_THROTTLED; |
63832515 | 1337 | spin_unlock_irq(&garmin_data_p->lock); |
1da177e4 LT |
1338 | |
1339 | /* in native mode send queued data to tty, in | |
1340 | serial mode nothing needs to be done here */ | |
1341 | if (garmin_data_p->mode == MODE_NATIVE) | |
1342 | garmin_flush_queue(garmin_data_p); | |
eb6d8c2d | 1343 | |
fb571101 | 1344 | if ((garmin_data_p->flags & FLAGS_BULK_IN_ACTIVE) != 0) { |
63832515 | 1345 | status = usb_submit_urb(port->read_urb, GFP_KERNEL); |
eb6d8c2d HK |
1346 | if (status) |
1347 | dev_err(&port->dev, | |
1348 | "%s - failed resubmitting read urb, error %d\n", | |
441b62c1 | 1349 | __func__, status); |
eb6d8c2d | 1350 | } |
1da177e4 LT |
1351 | } |
1352 | ||
1da177e4 LT |
1353 | /* |
1354 | * The timer is currently only used to send queued packets to | |
1355 | * the tty in cases where the protocol provides no own handshaking | |
1356 | * to initiate the transfer. | |
1357 | */ | |
29d15361 | 1358 | static void timeout_handler(struct timer_list *t) |
1da177e4 | 1359 | { |
29d15361 | 1360 | struct garmin_data *garmin_data_p = from_timer(garmin_data_p, t, timer); |
1da177e4 LT |
1361 | |
1362 | /* send the next queued packet to the tty port */ | |
1363 | if (garmin_data_p->mode == MODE_NATIVE) | |
1364 | if (garmin_data_p->flags & FLAGS_QUEUING) | |
1365 | garmin_flush_queue(garmin_data_p); | |
1366 | } | |
1367 | ||
1368 | ||
1369 | ||
db5c8b52 | 1370 | static int garmin_port_probe(struct usb_serial_port *port) |
1da177e4 | 1371 | { |
db5c8b52 AS |
1372 | int status; |
1373 | struct garmin_data *garmin_data_p; | |
1da177e4 | 1374 | |
7ac9da10 | 1375 | garmin_data_p = kzalloc(sizeof(struct garmin_data), GFP_KERNEL); |
10c642d0 | 1376 | if (!garmin_data_p) |
1da177e4 | 1377 | return -ENOMEM; |
10c642d0 | 1378 | |
29d15361 | 1379 | timer_setup(&garmin_data_p->timer, timeout_handler, 0); |
1da177e4 LT |
1380 | spin_lock_init(&garmin_data_p->lock); |
1381 | INIT_LIST_HEAD(&garmin_data_p->pktlist); | |
1da177e4 LT |
1382 | garmin_data_p->port = port; |
1383 | garmin_data_p->state = 0; | |
b4026c45 | 1384 | garmin_data_p->flags = 0; |
1da177e4 | 1385 | garmin_data_p->count = 0; |
19a565d9 | 1386 | init_usb_anchor(&garmin_data_p->write_urbs); |
1da177e4 LT |
1387 | usb_set_serial_port_data(port, garmin_data_p); |
1388 | ||
1389 | status = garmin_init_session(port); | |
74d471b5 JH |
1390 | if (status) |
1391 | goto err_free; | |
1392 | ||
1393 | return 0; | |
1394 | err_free: | |
1395 | kfree(garmin_data_p); | |
1da177e4 LT |
1396 | |
1397 | return status; | |
1398 | } | |
1399 | ||
1400 | ||
db5c8b52 | 1401 | static int garmin_port_remove(struct usb_serial_port *port) |
1da177e4 | 1402 | { |
af6d780b | 1403 | struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); |
1da177e4 | 1404 | |
19a565d9 | 1405 | usb_kill_anchored_urbs(&garmin_data_p->write_urbs); |
af6d780b | 1406 | usb_kill_urb(port->interrupt_in_urb); |
1da177e4 | 1407 | del_timer_sync(&garmin_data_p->timer); |
af6d780b | 1408 | kfree(garmin_data_p); |
db5c8b52 | 1409 | return 0; |
1da177e4 LT |
1410 | } |
1411 | ||
1412 | ||
1da177e4 | 1413 | /* All of the device info needed */ |
ea65370d | 1414 | static struct usb_serial_driver garmin_device = { |
18fcac35 | 1415 | .driver = { |
eb6d8c2d HK |
1416 | .owner = THIS_MODULE, |
1417 | .name = "garmin_gps", | |
18fcac35 | 1418 | }, |
eb6d8c2d | 1419 | .description = "Garmin GPS usb/tty", |
1da177e4 | 1420 | .id_table = id_table, |
1da177e4 LT |
1421 | .num_ports = 1, |
1422 | .open = garmin_open, | |
1423 | .close = garmin_close, | |
1424 | .throttle = garmin_throttle, | |
1425 | .unthrottle = garmin_unthrottle, | |
db5c8b52 AS |
1426 | .port_probe = garmin_port_probe, |
1427 | .port_remove = garmin_port_remove, | |
1da177e4 LT |
1428 | .write = garmin_write, |
1429 | .write_room = garmin_write_room, | |
1da177e4 LT |
1430 | .write_bulk_callback = garmin_write_bulk_callback, |
1431 | .read_bulk_callback = garmin_read_bulk_callback, | |
1432 | .read_int_callback = garmin_read_int_callback, | |
1433 | }; | |
1434 | ||
97b6b6d2 AS |
1435 | static struct usb_serial_driver * const serial_drivers[] = { |
1436 | &garmin_device, NULL | |
1437 | }; | |
1da177e4 | 1438 | |
68e24113 | 1439 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 | 1440 | |
af6d780b AC |
1441 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1442 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
1443 | MODULE_LICENSE("GPL"); |
1444 | ||
1da177e4 LT |
1445 | module_param(initial_mode, int, S_IRUGO); |
1446 | MODULE_PARM_DESC(initial_mode, "Initial mode"); |