blob: 6a3d0a1e02b8883762aaf75b62b283bcd3bd679c [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
David Friesf28c4e12014-01-15 22:29:21 -06002 * ds2490.c USB to one wire bridge
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 *
Evgeniy Polyakova8018762011-08-25 15:59:06 -07004 * Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +04005 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22#include <linux/module.h>
23#include <linux/kernel.h>
24#include <linux/mod_devicetable.h>
25#include <linux/usb.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090026#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027
Evgeniy Polyakov81f60752006-03-23 19:11:58 +030028#include "../w1_int.h"
29#include "../w1.h"
30
David Friesf28c4e12014-01-15 22:29:21 -060031/* USB Standard */
32/* USB Control request vendor type */
33#define VENDOR 0x40
34
Evgeniy Polyakov81f60752006-03-23 19:11:58 +030035/* COMMAND TYPE CODES */
36#define CONTROL_CMD 0x00
37#define COMM_CMD 0x01
38#define MODE_CMD 0x02
39
40/* CONTROL COMMAND CODES */
41#define CTL_RESET_DEVICE 0x0000
42#define CTL_START_EXE 0x0001
43#define CTL_RESUME_EXE 0x0002
44#define CTL_HALT_EXE_IDLE 0x0003
45#define CTL_HALT_EXE_DONE 0x0004
46#define CTL_FLUSH_COMM_CMDS 0x0007
47#define CTL_FLUSH_RCV_BUFFER 0x0008
48#define CTL_FLUSH_XMT_BUFFER 0x0009
49#define CTL_GET_COMM_CMDS 0x000A
50
51/* MODE COMMAND CODES */
52#define MOD_PULSE_EN 0x0000
53#define MOD_SPEED_CHANGE_EN 0x0001
54#define MOD_1WIRE_SPEED 0x0002
55#define MOD_STRONG_PU_DURATION 0x0003
56#define MOD_PULLDOWN_SLEWRATE 0x0004
57#define MOD_PROG_PULSE_DURATION 0x0005
58#define MOD_WRITE1_LOWTIME 0x0006
59#define MOD_DSOW0_TREC 0x0007
60
61/* COMMUNICATION COMMAND CODES */
62#define COMM_ERROR_ESCAPE 0x0601
63#define COMM_SET_DURATION 0x0012
64#define COMM_BIT_IO 0x0020
65#define COMM_PULSE 0x0030
66#define COMM_1_WIRE_RESET 0x0042
67#define COMM_BYTE_IO 0x0052
68#define COMM_MATCH_ACCESS 0x0064
69#define COMM_BLOCK_IO 0x0074
70#define COMM_READ_STRAIGHT 0x0080
71#define COMM_DO_RELEASE 0x6092
72#define COMM_SET_PATH 0x00A2
73#define COMM_WRITE_SRAM_PAGE 0x00B2
74#define COMM_WRITE_EPROM 0x00C4
75#define COMM_READ_CRC_PROT_PAGE 0x00D4
76#define COMM_READ_REDIRECT_PAGE_CRC 0x21E4
77#define COMM_SEARCH_ACCESS 0x00F4
78
79/* Communication command bits */
80#define COMM_TYPE 0x0008
81#define COMM_SE 0x0008
82#define COMM_D 0x0008
83#define COMM_Z 0x0008
84#define COMM_CH 0x0008
85#define COMM_SM 0x0008
86#define COMM_R 0x0008
87#define COMM_IM 0x0001
88
89#define COMM_PS 0x4000
90#define COMM_PST 0x4000
91#define COMM_CIB 0x4000
92#define COMM_RTS 0x4000
93#define COMM_DT 0x2000
94#define COMM_SPU 0x1000
95#define COMM_F 0x0800
David Fries19e71842008-10-15 22:05:08 -070096#define COMM_NTF 0x0400
Evgeniy Polyakov81f60752006-03-23 19:11:58 +030097#define COMM_ICP 0x0200
98#define COMM_RST 0x0100
99
100#define PULSE_PROG 0x01
101#define PULSE_SPUE 0x02
102
103#define BRANCH_MAIN 0xCC
104#define BRANCH_AUX 0x33
105
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300106/* Status flags */
107#define ST_SPUA 0x01 /* Strong Pull-up is active */
108#define ST_PRGA 0x02 /* 12V programming pulse is being generated */
109#define ST_12VP 0x04 /* external 12V programming voltage is present */
110#define ST_PMOD 0x08 /* DS2490 powered from USB and external sources */
111#define ST_HALT 0x10 /* DS2490 is currently halted */
112#define ST_IDLE 0x20 /* DS2490 is currently idle */
113#define ST_EPOF 0x80
David Friesf28c4e12014-01-15 22:29:21 -0600114/* Status transfer size, 16 bytes status, 16 byte result flags */
115#define ST_SIZE 0x20
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300116
David Fries4b9cf1b2008-10-15 22:05:06 -0700117/* Result Register flags */
118#define RR_DETECT 0xA5 /* New device detected */
119#define RR_NRS 0x01 /* Reset no presence or ... */
120#define RR_SH 0x02 /* short on reset or set path */
121#define RR_APP 0x04 /* alarming presence on reset */
122#define RR_VPP 0x08 /* 12V expected not seen */
123#define RR_CMP 0x10 /* compare error */
124#define RR_CRC 0x20 /* CRC error detected */
125#define RR_RDP 0x40 /* redirected page */
126#define RR_EOS 0x80 /* end of search error */
127
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300128#define SPEED_NORMAL 0x00
129#define SPEED_FLEXIBLE 0x01
130#define SPEED_OVERDRIVE 0x02
131
132#define NUM_EP 4
133#define EP_CONTROL 0
134#define EP_STATUS 1
135#define EP_DATA_OUT 2
136#define EP_DATA_IN 3
137
138struct ds_device
139{
140 struct list_head ds_entry;
141
142 struct usb_device *udev;
143 struct usb_interface *intf;
144
145 int ep[NUM_EP];
146
David Fries1f4ec2d2008-10-15 22:05:03 -0700147 /* Strong PullUp
148 * 0: pullup not active, else duration in milliseconds
149 */
150 int spu_sleep;
David Friesade6d8102008-10-15 22:05:10 -0700151 /* spu_bit contains COMM_SPU or 0 depending on if the strong pullup
152 * should be active or not for writes.
153 */
154 u16 spu_bit;
David Fries1f4ec2d2008-10-15 22:05:03 -0700155
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300156 struct w1_bus_master master;
157};
158
159struct ds_status
160{
161 u8 enable;
162 u8 speed;
163 u8 pullup_dur;
164 u8 ppuls_dur;
165 u8 pulldown_slew;
166 u8 write1_time;
167 u8 write0_time;
168 u8 reserved0;
169 u8 status;
170 u8 command0;
171 u8 command1;
172 u8 command_buffer_status;
173 u8 data_out_buffer_status;
174 u8 data_in_buffer_status;
175 u8 reserved1;
176 u8 reserved2;
177
178};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179
180static struct usb_device_id ds_id_table [] = {
181 { USB_DEVICE(0x04fa, 0x2490) },
182 { },
183};
184MODULE_DEVICE_TABLE(usb, ds_id_table);
185
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400186static int ds_probe(struct usb_interface *, const struct usb_device_id *);
187static void ds_disconnect(struct usb_interface *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189static int ds_send_control(struct ds_device *, u16, u16);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190static int ds_send_control_cmd(struct ds_device *, u16, u16);
191
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300192static LIST_HEAD(ds_devices);
Evgeniy Polyakovabd52a12006-04-03 12:04:27 +0400193static DEFINE_MUTEX(ds_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194
195static struct usb_driver ds_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 .name = "DS9490R",
197 .probe = ds_probe,
198 .disconnect = ds_disconnect,
199 .id_table = ds_id_table,
200};
201
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202static int ds_send_control_cmd(struct ds_device *dev, u16 value, u16 index)
203{
204 int err;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400205
206 err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]),
David Friesf28c4e12014-01-15 22:29:21 -0600207 CONTROL_CMD, VENDOR, value, index, NULL, 0, 1000);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 if (err < 0) {
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400209 printk(KERN_ERR "Failed to send command control message %x.%x: err=%d.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 value, index, err);
211 return err;
212 }
213
214 return err;
215}
David Fries1f4ec2d2008-10-15 22:05:03 -0700216
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217static int ds_send_control_mode(struct ds_device *dev, u16 value, u16 index)
218{
219 int err;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400220
221 err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]),
David Friesf28c4e12014-01-15 22:29:21 -0600222 MODE_CMD, VENDOR, value, index, NULL, 0, 1000);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 if (err < 0) {
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400224 printk(KERN_ERR "Failed to send mode control message %x.%x: err=%d.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225 value, index, err);
226 return err;
227 }
228
229 return err;
230}
David Fries1f4ec2d2008-10-15 22:05:03 -0700231
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232static int ds_send_control(struct ds_device *dev, u16 value, u16 index)
233{
234 int err;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400235
236 err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]),
David Friesf28c4e12014-01-15 22:29:21 -0600237 COMM_CMD, VENDOR, value, index, NULL, 0, 1000);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 if (err < 0) {
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400239 printk(KERN_ERR "Failed to send control message %x.%x: err=%d.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 value, index, err);
241 return err;
242 }
243
244 return err;
245}
246
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400247static int ds_recv_status_nodump(struct ds_device *dev, struct ds_status *st,
248 unsigned char *buf, int size)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249{
250 int count, err;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400251
Li Zefane9b5a492007-11-14 16:58:34 -0800252 memset(st, 0, sizeof(*st));
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400253
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 count = 0;
255 err = usb_bulk_msg(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_STATUS]), buf, size, &count, 100);
256 if (err < 0) {
257 printk(KERN_ERR "Failed to read 1-wire data from 0x%x: err=%d.\n", dev->ep[EP_STATUS], err);
258 return err;
259 }
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400260
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261 if (count >= sizeof(*st))
262 memcpy(st, buf, sizeof(*st));
263
264 return count;
265}
266
David Fries4b9cf1b2008-10-15 22:05:06 -0700267static inline void ds_print_msg(unsigned char *buf, unsigned char *str, int off)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268{
David Fries4b9cf1b2008-10-15 22:05:06 -0700269 printk(KERN_INFO "%45s: %8x\n", str, buf[off]);
270}
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400271
David Fries4b9cf1b2008-10-15 22:05:06 -0700272static void ds_dump_status(struct ds_device *dev, unsigned char *buf, int count)
273{
274 int i;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400275
David Fries4b9cf1b2008-10-15 22:05:06 -0700276 printk(KERN_INFO "0x%x: count=%d, status: ", dev->ep[EP_STATUS], count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277 for (i=0; i<count; ++i)
278 printk("%02x ", buf[i]);
David Fries4b9cf1b2008-10-15 22:05:06 -0700279 printk(KERN_INFO "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280
281 if (count >= 16) {
David Fries4b9cf1b2008-10-15 22:05:06 -0700282 ds_print_msg(buf, "enable flag", 0);
283 ds_print_msg(buf, "1-wire speed", 1);
284 ds_print_msg(buf, "strong pullup duration", 2);
285 ds_print_msg(buf, "programming pulse duration", 3);
286 ds_print_msg(buf, "pulldown slew rate control", 4);
287 ds_print_msg(buf, "write-1 low time", 5);
288 ds_print_msg(buf, "data sample offset/write-0 recovery time",
289 6);
290 ds_print_msg(buf, "reserved (test register)", 7);
291 ds_print_msg(buf, "device status flags", 8);
292 ds_print_msg(buf, "communication command byte 1", 9);
293 ds_print_msg(buf, "communication command byte 2", 10);
294 ds_print_msg(buf, "communication command buffer status", 11);
295 ds_print_msg(buf, "1-wire data output buffer status", 12);
296 ds_print_msg(buf, "1-wire data input buffer status", 13);
297 ds_print_msg(buf, "reserved", 14);
298 ds_print_msg(buf, "reserved", 15);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299 }
David Fries4b9cf1b2008-10-15 22:05:06 -0700300 for (i = 16; i < count; ++i) {
301 if (buf[i] == RR_DETECT) {
302 ds_print_msg(buf, "new device detect", i);
303 continue;
304 }
305 ds_print_msg(buf, "Result Register Value: ", i);
306 if (buf[i] & RR_NRS)
307 printk(KERN_INFO "NRS: Reset no presence or ...\n");
308 if (buf[i] & RR_SH)
309 printk(KERN_INFO "SH: short on reset or set path\n");
310 if (buf[i] & RR_APP)
311 printk(KERN_INFO "APP: alarming presence on reset\n");
312 if (buf[i] & RR_VPP)
313 printk(KERN_INFO "VPP: 12V expected not seen\n");
314 if (buf[i] & RR_CMP)
315 printk(KERN_INFO "CMP: compare error\n");
316 if (buf[i] & RR_CRC)
317 printk(KERN_INFO "CRC: CRC error detected\n");
318 if (buf[i] & RR_RDP)
319 printk(KERN_INFO "RDP: redirected page\n");
320 if (buf[i] & RR_EOS)
321 printk(KERN_INFO "EOS: end of search error\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323}
324
David Friesade6d8102008-10-15 22:05:10 -0700325static void ds_reset_device(struct ds_device *dev)
326{
327 ds_send_control_cmd(dev, CTL_RESET_DEVICE, 0);
328 /* Always allow strong pullup which allow individual writes to use
329 * the strong pullup.
330 */
331 if (ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_SPUE))
332 printk(KERN_ERR "ds_reset_device: "
333 "Error allowing strong pullup\n");
334 /* Chip strong pullup time was cleared. */
335 if (dev->spu_sleep) {
336 /* lower 4 bits are 0, see ds_set_pullup */
337 u8 del = dev->spu_sleep>>4;
338 if (ds_send_control(dev, COMM_SET_DURATION | COMM_IM, del))
339 printk(KERN_ERR "ds_reset_device: "
340 "Error setting duration\n");
341 }
342}
343
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344static int ds_recv_data(struct ds_device *dev, unsigned char *buf, int size)
345{
346 int count, err;
347 struct ds_status st;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400348
David Friese464af22008-10-15 22:05:08 -0700349 /* Careful on size. If size is less than what is available in
350 * the input buffer, the device fails the bulk transfer and
351 * clears the input buffer. It could read the maximum size of
352 * the data buffer, but then do you return the first, last, or
353 * some set of the middle size bytes? As long as the rest of
354 * the code is correct there will be size bytes waiting. A
355 * call to ds_wait_status will wait until the device is idle
356 * and any data to be received would have been available.
357 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 count = 0;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400359 err = usb_bulk_msg(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_DATA_IN]),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 buf, size, &count, 1000);
361 if (err < 0) {
David Friesf28c4e12014-01-15 22:29:21 -0600362 u8 buf[ST_SIZE];
David Fries4b9cf1b2008-10-15 22:05:06 -0700363 int count;
364
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 printk(KERN_INFO "Clearing ep0x%x.\n", dev->ep[EP_DATA_IN]);
366 usb_clear_halt(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_DATA_IN]));
David Fries4b9cf1b2008-10-15 22:05:06 -0700367
368 count = ds_recv_status_nodump(dev, &st, buf, sizeof(buf));
369 ds_dump_status(dev, buf, count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 return err;
371 }
372
373#if 0
374 {
375 int i;
376
377 printk("%s: count=%d: ", __func__, count);
378 for (i=0; i<count; ++i)
379 printk("%02x ", buf[i]);
380 printk("\n");
381 }
382#endif
383 return count;
384}
385
386static int ds_send_data(struct ds_device *dev, unsigned char *buf, int len)
387{
388 int count, err;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400389
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390 count = 0;
391 err = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->ep[EP_DATA_OUT]), buf, len, &count, 1000);
392 if (err < 0) {
David Fries95cfaeb2008-10-15 22:05:02 -0700393 printk(KERN_ERR "Failed to write 1-wire data to ep0x%x: "
394 "err=%d.\n", dev->ep[EP_DATA_OUT], err);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 return err;
396 }
397
398 return err;
399}
400
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400401#if 0
402
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403int ds_stop_pulse(struct ds_device *dev, int limit)
404{
405 struct ds_status st;
406 int count = 0, err = 0;
David Friesf28c4e12014-01-15 22:29:21 -0600407 u8 buf[ST_SIZE];
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400408
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 do {
410 err = ds_send_control(dev, CTL_HALT_EXE_IDLE, 0);
411 if (err)
412 break;
413 err = ds_send_control(dev, CTL_RESUME_EXE, 0);
414 if (err)
415 break;
416 err = ds_recv_status_nodump(dev, &st, buf, sizeof(buf));
417 if (err)
418 break;
419
420 if ((st.status & ST_SPUA) == 0) {
421 err = ds_send_control_mode(dev, MOD_PULSE_EN, 0);
422 if (err)
423 break;
424 }
425 } while(++count < limit);
426
427 return err;
428}
429
430int ds_detect(struct ds_device *dev, struct ds_status *st)
431{
432 int err;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400433
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 err = ds_send_control_cmd(dev, CTL_RESET_DEVICE, 0);
435 if (err)
436 return err;
437
438 err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM, 0);
439 if (err)
440 return err;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400441
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442 err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM | COMM_TYPE, 0x40);
443 if (err)
444 return err;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400445
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446 err = ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_PROG);
447 if (err)
448 return err;
449
David Fries4b9cf1b2008-10-15 22:05:06 -0700450 err = ds_dump_status(dev, st);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451
452 return err;
453}
454
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400455#endif /* 0 */
456
457static int ds_wait_status(struct ds_device *dev, struct ds_status *st)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458{
David Friesf28c4e12014-01-15 22:29:21 -0600459 u8 buf[ST_SIZE];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 int err, count = 0;
461
462 do {
David Friesf28c4e12014-01-15 22:29:21 -0600463 st->status = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 err = ds_recv_status_nodump(dev, st, buf, sizeof(buf));
465#if 0
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400466 if (err >= 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467 int i;
468 printk("0x%x: count=%d, status: ", dev->ep[EP_STATUS], err);
469 for (i=0; i<err; ++i)
470 printk("%02x ", buf[i]);
471 printk("\n");
472 }
473#endif
David Friesf28c4e12014-01-15 22:29:21 -0600474 } while (!(st->status & ST_IDLE) && !(err < 0) && ++count < 100);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475
David Fries4b9cf1b2008-10-15 22:05:06 -0700476 if (err >= 16 && st->status & ST_EPOF) {
477 printk(KERN_INFO "Resetting device after ST_EPOF.\n");
David Friesade6d8102008-10-15 22:05:10 -0700478 ds_reset_device(dev);
David Fries4b9cf1b2008-10-15 22:05:06 -0700479 /* Always dump the device status. */
480 count = 101;
481 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482
David Fries4b9cf1b2008-10-15 22:05:06 -0700483 /* Dump the status for errors or if there is extended return data.
484 * The extended status includes new device detection (maybe someone
485 * can do something with it).
486 */
487 if (err > 16 || count >= 100 || err < 0)
488 ds_dump_status(dev, buf, err);
489
490 /* Extended data isn't an error. Well, a short is, but the dump
491 * would have already told the user that and we can't do anything
492 * about it in software anyway.
493 */
494 if (count >= 100 || err < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495 return -1;
David Fries4b9cf1b2008-10-15 22:05:06 -0700496 else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498}
499
David Fries7a4b9702008-10-15 22:05:07 -0700500static int ds_reset(struct ds_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501{
502 int err;
503
David Fries19e71842008-10-15 22:05:08 -0700504 /* Other potentionally interesting flags for reset.
505 *
506 * COMM_NTF: Return result register feedback. This could be used to
507 * detect some conditions such as short, alarming presence, or
508 * detect if a new device was detected.
509 *
510 * COMM_SE which allows SPEED_NORMAL, SPEED_FLEXIBLE, SPEED_OVERDRIVE:
511 * Select the data transfer rate.
512 */
513 err = ds_send_control(dev, COMM_1_WIRE_RESET | COMM_IM, SPEED_NORMAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514 if (err)
515 return err;
516
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517 return 0;
518}
519
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400520#if 0
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300521static int ds_set_speed(struct ds_device *dev, int speed)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522{
523 int err;
Evgeniy Polyakovbd529cf2005-12-06 13:38:28 +0300524
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525 if (speed != SPEED_NORMAL && speed != SPEED_FLEXIBLE && speed != SPEED_OVERDRIVE)
526 return -EINVAL;
527
528 if (speed != SPEED_OVERDRIVE)
529 speed = SPEED_FLEXIBLE;
530
531 speed &= 0xff;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400532
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533 err = ds_send_control_mode(dev, MOD_1WIRE_SPEED, speed);
534 if (err)
535 return err;
536
537 return err;
538}
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400539#endif /* 0 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540
David Fries1f4ec2d2008-10-15 22:05:03 -0700541static int ds_set_pullup(struct ds_device *dev, int delay)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542{
David Friesade6d8102008-10-15 22:05:10 -0700543 int err = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544 u8 del = 1 + (u8)(delay >> 4);
David Friesade6d8102008-10-15 22:05:10 -0700545 /* Just storing delay would not get the trunication and roundup. */
546 int ms = del<<4;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400547
David Friesade6d8102008-10-15 22:05:10 -0700548 /* Enable spu_bit if a delay is set. */
549 dev->spu_bit = delay ? COMM_SPU : 0;
550 /* If delay is zero, it has already been disabled, if the time is
551 * the same as the hardware was last programmed to, there is also
552 * nothing more to do. Compare with the recalculated value ms
553 * rather than del or delay which can have a different value.
554 */
555 if (delay == 0 || ms == dev->spu_sleep)
556 return err;
557
558 err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM, del);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 if (err)
560 return err;
561
David Friesade6d8102008-10-15 22:05:10 -0700562 dev->spu_sleep = ms;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400563
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564 return err;
565}
566
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300567static int ds_touch_bit(struct ds_device *dev, u8 bit, u8 *tbit)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568{
David Fries6e10f652008-10-15 22:05:05 -0700569 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570 struct ds_status st;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400571
David Fries6e10f652008-10-15 22:05:05 -0700572 err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | (bit ? COMM_D : 0),
573 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 if (err)
575 return err;
576
David Fries6e10f652008-10-15 22:05:05 -0700577 ds_wait_status(dev, &st);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578
579 err = ds_recv_data(dev, tbit, sizeof(*tbit));
580 if (err < 0)
581 return err;
582
583 return 0;
584}
585
David Friesa08e2d32008-10-15 22:05:04 -0700586#if 0
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300587static int ds_write_bit(struct ds_device *dev, u8 bit)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588{
589 int err;
590 struct ds_status st;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400591
David Friese1c86d22008-10-15 22:05:04 -0700592 /* Set COMM_ICP to write without a readback. Note, this will
593 * produce one time slot, a down followed by an up with COMM_D
594 * only determing the timing.
595 */
596 err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | COMM_ICP |
597 (bit ? COMM_D : 0), 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598 if (err)
599 return err;
600
601 ds_wait_status(dev, &st);
602
603 return 0;
604}
David Friesa08e2d32008-10-15 22:05:04 -0700605#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300607static int ds_write_byte(struct ds_device *dev, u8 byte)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608{
609 int err;
610 struct ds_status st;
611 u8 rbyte;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400612
David Friesade6d8102008-10-15 22:05:10 -0700613 err = ds_send_control(dev, COMM_BYTE_IO | COMM_IM | dev->spu_bit, byte);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614 if (err)
615 return err;
616
David Friesade6d8102008-10-15 22:05:10 -0700617 if (dev->spu_bit)
David Fries1f4ec2d2008-10-15 22:05:03 -0700618 msleep(dev->spu_sleep);
619
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620 err = ds_wait_status(dev, &st);
621 if (err)
622 return err;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400623
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624 err = ds_recv_data(dev, &rbyte, sizeof(rbyte));
625 if (err < 0)
626 return err;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400627
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628 return !(byte == rbyte);
629}
630
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300631static int ds_read_byte(struct ds_device *dev, u8 *byte)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632{
633 int err;
634 struct ds_status st;
635
636 err = ds_send_control(dev, COMM_BYTE_IO | COMM_IM , 0xff);
637 if (err)
638 return err;
639
640 ds_wait_status(dev, &st);
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400641
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642 err = ds_recv_data(dev, byte, sizeof(*byte));
643 if (err < 0)
644 return err;
645
646 return 0;
647}
648
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300649static int ds_read_block(struct ds_device *dev, u8 *buf, int len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650{
651 struct ds_status st;
652 int err;
653
654 if (len > 64*1024)
655 return -E2BIG;
656
657 memset(buf, 0xFF, len);
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400658
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 err = ds_send_data(dev, buf, len);
660 if (err < 0)
661 return err;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400662
David Fries1f4ec2d2008-10-15 22:05:03 -0700663 err = ds_send_control(dev, COMM_BLOCK_IO | COMM_IM, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 if (err)
665 return err;
666
667 ds_wait_status(dev, &st);
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400668
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669 memset(buf, 0x00, len);
670 err = ds_recv_data(dev, buf, len);
671
672 return err;
673}
674
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300675static int ds_write_block(struct ds_device *dev, u8 *buf, int len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676{
677 int err;
678 struct ds_status st;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400679
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 err = ds_send_data(dev, buf, len);
681 if (err < 0)
682 return err;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400683
David Friesade6d8102008-10-15 22:05:10 -0700684 err = ds_send_control(dev, COMM_BLOCK_IO | COMM_IM | dev->spu_bit, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685 if (err)
686 return err;
687
David Friesade6d8102008-10-15 22:05:10 -0700688 if (dev->spu_bit)
David Fries1f4ec2d2008-10-15 22:05:03 -0700689 msleep(dev->spu_sleep);
690
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691 ds_wait_status(dev, &st);
692
693 err = ds_recv_data(dev, buf, len);
694 if (err < 0)
695 return err;
696
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697 return !(err == len);
698}
699
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400700#if 0
701
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300702static int ds_search(struct ds_device *dev, u64 init, u64 *buf, u8 id_number, int conditional_search)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703{
704 int err;
705 u16 value, index;
706 struct ds_status st;
707
708 memset(buf, 0, sizeof(buf));
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400709
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710 err = ds_send_data(ds_dev, (unsigned char *)&init, 8);
711 if (err)
712 return err;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400713
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714 ds_wait_status(ds_dev, &st);
715
716 value = COMM_SEARCH_ACCESS | COMM_IM | COMM_SM | COMM_F | COMM_RTS;
717 index = (conditional_search ? 0xEC : 0xF0) | (id_number << 8);
718 err = ds_send_control(ds_dev, value, index);
719 if (err)
720 return err;
721
722 ds_wait_status(ds_dev, &st);
723
724 err = ds_recv_data(ds_dev, (unsigned char *)buf, 8*id_number);
725 if (err < 0)
726 return err;
727
728 return err/8;
729}
730
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300731static int ds_match_access(struct ds_device *dev, u64 init)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732{
733 int err;
734 struct ds_status st;
735
736 err = ds_send_data(dev, (unsigned char *)&init, sizeof(init));
737 if (err)
738 return err;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400739
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740 ds_wait_status(dev, &st);
741
742 err = ds_send_control(dev, COMM_MATCH_ACCESS | COMM_IM | COMM_RST, 0x0055);
743 if (err)
744 return err;
745
746 ds_wait_status(dev, &st);
747
748 return 0;
749}
750
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300751static int ds_set_path(struct ds_device *dev, u64 init)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752{
753 int err;
754 struct ds_status st;
755 u8 buf[9];
756
757 memcpy(buf, &init, 8);
758 buf[8] = BRANCH_MAIN;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400759
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760 err = ds_send_data(dev, buf, sizeof(buf));
761 if (err)
762 return err;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400763
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764 ds_wait_status(dev, &st);
765
766 err = ds_send_control(dev, COMM_SET_PATH | COMM_IM | COMM_RST, 0);
767 if (err)
768 return err;
769
770 ds_wait_status(dev, &st);
771
772 return 0;
773}
774
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400775#endif /* 0 */
776
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300777static u8 ds9490r_touch_bit(void *data, u8 bit)
778{
779 u8 ret;
780 struct ds_device *dev = data;
781
782 if (ds_touch_bit(dev, bit, &ret))
783 return 0;
784
785 return ret;
786}
787
David Friesa08e2d32008-10-15 22:05:04 -0700788#if 0
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300789static void ds9490r_write_bit(void *data, u8 bit)
790{
791 struct ds_device *dev = data;
792
793 ds_write_bit(dev, bit);
794}
795
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300796static u8 ds9490r_read_bit(void *data)
797{
798 struct ds_device *dev = data;
799 int err;
800 u8 bit = 0;
801
802 err = ds_touch_bit(dev, 1, &bit);
803 if (err)
804 return 0;
805
806 return bit & 1;
807}
David Friesa08e2d32008-10-15 22:05:04 -0700808#endif
809
810static void ds9490r_write_byte(void *data, u8 byte)
811{
812 struct ds_device *dev = data;
813
814 ds_write_byte(dev, byte);
815}
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300816
817static u8 ds9490r_read_byte(void *data)
818{
819 struct ds_device *dev = data;
820 int err;
821 u8 byte = 0;
822
823 err = ds_read_byte(dev, &byte);
824 if (err)
825 return 0;
826
827 return byte;
828}
829
830static void ds9490r_write_block(void *data, const u8 *buf, int len)
831{
832 struct ds_device *dev = data;
833
834 ds_write_block(dev, (u8 *)buf, len);
835}
836
837static u8 ds9490r_read_block(void *data, u8 *buf, int len)
838{
839 struct ds_device *dev = data;
840 int err;
841
842 err = ds_read_block(dev, buf, len);
843 if (err < 0)
844 return 0;
845
846 return len;
847}
848
849static u8 ds9490r_reset(void *data)
850{
851 struct ds_device *dev = data;
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300852 int err;
853
David Fries7a4b9702008-10-15 22:05:07 -0700854 err = ds_reset(dev);
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300855 if (err)
856 return 1;
857
858 return 0;
859}
860
David Fries1f4ec2d2008-10-15 22:05:03 -0700861static u8 ds9490r_set_pullup(void *data, int delay)
862{
863 struct ds_device *dev = data;
864
865 if (ds_set_pullup(dev, delay))
866 return 1;
867
868 return 0;
869}
870
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300871static int ds_w1_init(struct ds_device *dev)
872{
873 memset(&dev->master, 0, sizeof(struct w1_bus_master));
874
David Friese464af22008-10-15 22:05:08 -0700875 /* Reset the device as it can be in a bad state.
876 * This is necessary because a block write will wait for data
877 * to be placed in the output buffer and block any later
878 * commands which will keep accumulating and the device will
879 * not be idle. Another case is removing the ds2490 module
880 * while a bus search is in progress, somehow a few commands
881 * get through, but the input transfers fail leaving data in
882 * the input buffer. This will cause the next read to fail
883 * see the note in ds_recv_data.
884 */
David Friesade6d8102008-10-15 22:05:10 -0700885 ds_reset_device(dev);
David Friese464af22008-10-15 22:05:08 -0700886
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300887 dev->master.data = dev;
888 dev->master.touch_bit = &ds9490r_touch_bit;
David Friesa08e2d32008-10-15 22:05:04 -0700889 /* read_bit and write_bit in w1_bus_master are expected to set and
890 * sample the line level. For write_bit that means it is expected to
891 * set it to that value and leave it there. ds2490 only supports an
892 * individual time slot at the lowest level. The requirement from
893 * pulling the bus state down to reading the state is 15us, something
894 * that isn't realistic on the USB bus anyway.
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300895 dev->master.read_bit = &ds9490r_read_bit;
896 dev->master.write_bit = &ds9490r_write_bit;
David Friesa08e2d32008-10-15 22:05:04 -0700897 */
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300898 dev->master.read_byte = &ds9490r_read_byte;
899 dev->master.write_byte = &ds9490r_write_byte;
900 dev->master.read_block = &ds9490r_read_block;
901 dev->master.write_block = &ds9490r_write_block;
902 dev->master.reset_bus = &ds9490r_reset;
David Fries1f4ec2d2008-10-15 22:05:03 -0700903 dev->master.set_pullup = &ds9490r_set_pullup;
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300904
905 return w1_add_master_device(&dev->master);
906}
907
908static void ds_w1_fini(struct ds_device *dev)
909{
910 w1_remove_master_device(&dev->master);
911}
912
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400913static int ds_probe(struct usb_interface *intf,
914 const struct usb_device_id *udev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915{
916 struct usb_device *udev = interface_to_usbdev(intf);
917 struct usb_endpoint_descriptor *endpoint;
918 struct usb_host_interface *iface_desc;
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300919 struct ds_device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920 int i, err;
921
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300922 dev = kmalloc(sizeof(struct ds_device), GFP_KERNEL);
923 if (!dev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700924 printk(KERN_INFO "Failed to allocate new DS9490R structure.\n");
925 return -ENOMEM;
926 }
David Fries1f4ec2d2008-10-15 22:05:03 -0700927 dev->spu_sleep = 0;
David Friesade6d8102008-10-15 22:05:10 -0700928 dev->spu_bit = 0;
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300929 dev->udev = usb_get_dev(udev);
930 if (!dev->udev) {
931 err = -ENOMEM;
932 goto err_out_free;
933 }
934 memset(dev->ep, 0, sizeof(dev->ep));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700935
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300936 usb_set_intfdata(intf, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300938 err = usb_set_interface(dev->udev, intf->altsetting[0].desc.bInterfaceNumber, 3);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939 if (err) {
940 printk(KERN_ERR "Failed to set alternative setting 3 for %d interface: err=%d.\n",
941 intf->altsetting[0].desc.bInterfaceNumber, err);
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300942 goto err_out_clear;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943 }
944
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300945 err = usb_reset_configuration(dev->udev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946 if (err) {
947 printk(KERN_ERR "Failed to reset configuration: err=%d.\n", err);
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300948 goto err_out_clear;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700949 }
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400950
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951 iface_desc = &intf->altsetting[0];
952 if (iface_desc->desc.bNumEndpoints != NUM_EP-1) {
953 printk(KERN_INFO "Num endpoints=%d. It is not DS9490R.\n", iface_desc->desc.bNumEndpoints);
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300954 err = -EINVAL;
955 goto err_out_clear;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956 }
957
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958 /*
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400959 * This loop doesn'd show control 0 endpoint,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960 * so we will fill only 1-3 endpoints entry.
961 */
962 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
963 endpoint = &iface_desc->endpoint[i].desc;
964
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300965 dev->ep[i+1] = endpoint->bEndpointAddress;
966#if 0
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967 printk("%d: addr=%x, size=%d, dir=%s, type=%x\n",
968 i, endpoint->bEndpointAddress, le16_to_cpu(endpoint->wMaxPacketSize),
969 (endpoint->bEndpointAddress & USB_DIR_IN)?"IN":"OUT",
970 endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971#endif
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300972 }
973
974 err = ds_w1_init(dev);
975 if (err)
976 goto err_out_clear;
977
Evgeniy Polyakovabd52a12006-04-03 12:04:27 +0400978 mutex_lock(&ds_mutex);
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300979 list_add_tail(&dev->ds_entry, &ds_devices);
Evgeniy Polyakovabd52a12006-04-03 12:04:27 +0400980 mutex_unlock(&ds_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700981
982 return 0;
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300983
984err_out_clear:
985 usb_set_intfdata(intf, NULL);
986 usb_put_dev(dev->udev);
987err_out_free:
988 kfree(dev);
989 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700990}
991
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400992static void ds_disconnect(struct usb_interface *intf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700993{
994 struct ds_device *dev;
Evgeniy Polyakov8949d2a2005-08-03 15:14:50 +0400995
Linus Torvalds1da177e2005-04-16 15:20:36 -0700996 dev = usb_get_intfdata(intf);
Evgeniy Polyakov81f60752006-03-23 19:11:58 +0300997 if (!dev)
998 return;
999
Evgeniy Polyakovabd52a12006-04-03 12:04:27 +04001000 mutex_lock(&ds_mutex);
Evgeniy Polyakov81f60752006-03-23 19:11:58 +03001001 list_del(&dev->ds_entry);
Evgeniy Polyakovabd52a12006-04-03 12:04:27 +04001002 mutex_unlock(&ds_mutex);
Evgeniy Polyakov81f60752006-03-23 19:11:58 +03001003
1004 ds_w1_fini(dev);
1005
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006 usb_set_intfdata(intf, NULL);
1007
Linus Torvalds1da177e2005-04-16 15:20:36 -07001008 usb_put_dev(dev->udev);
1009 kfree(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010}
1011
Greg Kroah-Hartmanfe748482011-11-18 09:52:10 -08001012module_usb_driver(ds_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013
1014MODULE_LICENSE("GPL");
Evgeniy Polyakova8018762011-08-25 15:59:06 -07001015MODULE_AUTHOR("Evgeniy Polyakov <zbr@ioremap.net>");
Evgeniy Polyakov81f60752006-03-23 19:11:58 +03001016MODULE_DESCRIPTION("DS2490 USB <-> W1 bus master driver (DS9490*)");