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authorEvgeniy Polyakov <johnpol@2ka.mipt.ru>2005-12-06 05:38:28 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2006-03-23 20:28:11 -0500
commitbd529cfb40c427d5b5aae0d315afb9f0a1da5e76 (patch)
tree54de1d9860defa3c4938fd96246caffe089b9f3a /drivers/w1/masters
parentccd6994000fb6d08ee1be8a7fa20c8d602a2267d (diff)
[PATCH] W1: Move w1 bus master code into 'w1/masters' and move w1 slave code into 'w1/slaves'
Signed-off-by: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/w1/masters')
-rw-r--r--drivers/w1/masters/Kconfig38
-rw-r--r--drivers/w1/masters/Makefile11
-rw-r--r--drivers/w1/masters/ds_w1_bridge.c174
-rw-r--r--drivers/w1/masters/dscore.c795
-rw-r--r--drivers/w1/masters/dscore.h166
-rw-r--r--drivers/w1/masters/matrox_w1.c247
6 files changed, 1431 insertions, 0 deletions
diff --git a/drivers/w1/masters/Kconfig b/drivers/w1/masters/Kconfig
new file mode 100644
index 00000000000..51bd64d0e54
--- /dev/null
+++ b/drivers/w1/masters/Kconfig
@@ -0,0 +1,38 @@
1#
2# 1-wire bus master configuration
3#
4
5menu "1-wire Bus Masters"
6 depends on W1
7
8config W1_MASTER_MATROX
9 tristate "Matrox G400 transport layer for 1-wire"
10 depends on W1 && PCI
11 help
12 Say Y here if you want to communicate with your 1-wire devices
13 using Matrox's G400 GPIO pins.
14
15 This support is also available as a module. If so, the module
16 will be called matrox_w1.ko.
17
18config W1_MASTER_DS9490
19 tristate "DS9490R transport layer driver"
20 depends on W1 && USB
21 help
22 Say Y here if you want to have a driver for DS9490R UWB <-> W1 bridge.
23
24 This support is also available as a module. If so, the module
25 will be called ds9490r.ko.
26
27config W1_MASTER_DS9490_BRIDGE
28 tristate "DS9490R USB <-> W1 transport layer for 1-wire"
29 depends on W1_DS9490
30 help
31 Say Y here if you want to communicate with your 1-wire devices
32 using DS9490R USB bridge.
33
34 This support is also available as a module. If so, the module
35 will be called ds_w1_bridge.ko.
36
37endmenu
38
diff --git a/drivers/w1/masters/Makefile b/drivers/w1/masters/Makefile
new file mode 100644
index 00000000000..d9b84e522d6
--- /dev/null
+++ b/drivers/w1/masters/Makefile
@@ -0,0 +1,11 @@
1#
2# Makefile for 1-wire bus master drivers.
3#
4
5obj-$(CONFIG_W1_MASTER_MATROX) += matrox_w1.o
6
7obj-$(CONFIG_W1_MASTER_DS9490) += ds9490r.o
8ds9490r-objs := dscore.o
9
10obj-$(CONFIG_W1_MASTER_DS9490_BRIDGE) += ds_w1_bridge.o
11
diff --git a/drivers/w1/masters/ds_w1_bridge.c b/drivers/w1/masters/ds_w1_bridge.c
new file mode 100644
index 00000000000..5d30783a3eb
--- /dev/null
+++ b/drivers/w1/masters/ds_w1_bridge.c
@@ -0,0 +1,174 @@
1/*
2 * ds_w1_bridge.c
3 *
4 * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
5 *
6 *
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/types.h>
24
25#include "../w1.h"
26#include "../w1_int.h"
27#include "dscore.h"
28
29static struct ds_device *ds_dev;
30static struct w1_bus_master *ds_bus_master;
31
32static u8 ds9490r_touch_bit(void *data, u8 bit)
33{
34 u8 ret;
35 struct ds_device *dev = data;
36
37 if (ds_touch_bit(dev, bit, &ret))
38 return 0;
39
40 return ret;
41}
42
43static void ds9490r_write_bit(void *data, u8 bit)
44{
45 struct ds_device *dev = data;
46
47 ds_write_bit(dev, bit);
48}
49
50static void ds9490r_write_byte(void *data, u8 byte)
51{
52 struct ds_device *dev = data;
53
54 ds_write_byte(dev, byte);
55}
56
57static u8 ds9490r_read_bit(void *data)
58{
59 struct ds_device *dev = data;
60 int err;
61 u8 bit = 0;
62
63 err = ds_touch_bit(dev, 1, &bit);
64 if (err)
65 return 0;
66 //err = ds_read_bit(dev, &bit);
67 //if (err)
68 // return 0;
69
70 return bit & 1;
71}
72
73static u8 ds9490r_read_byte(void *data)
74{
75 struct ds_device *dev = data;
76 int err;
77 u8 byte = 0;
78
79 err = ds_read_byte(dev, &byte);
80 if (err)
81 return 0;
82
83 return byte;
84}
85
86static void ds9490r_write_block(void *data, const u8 *buf, int len)
87{
88 struct ds_device *dev = data;
89
90 ds_write_block(dev, (u8 *)buf, len);
91}
92
93static u8 ds9490r_read_block(void *data, u8 *buf, int len)
94{
95 struct ds_device *dev = data;
96 int err;
97
98 err = ds_read_block(dev, buf, len);
99 if (err < 0)
100 return 0;
101
102 return len;
103}
104
105static u8 ds9490r_reset(void *data)
106{
107 struct ds_device *dev = data;
108 struct ds_status st;
109 int err;
110
111 memset(&st, 0, sizeof(st));
112
113 err = ds_reset(dev, &st);
114 if (err)
115 return 1;
116
117 return 0;
118}
119
120static int __devinit ds_w1_init(void)
121{
122 int err;
123
124 ds_bus_master = kmalloc(sizeof(*ds_bus_master), GFP_KERNEL);
125 if (!ds_bus_master) {
126 printk(KERN_ERR "Failed to allocate DS9490R USB<->W1 bus_master structure.\n");
127 return -ENOMEM;
128 }
129
130 ds_dev = ds_get_device();
131 if (!ds_dev) {
132 printk(KERN_ERR "DS9490R is not registered.\n");
133 err = -ENODEV;
134 goto err_out_free_bus_master;
135 }
136
137 memset(ds_bus_master, 0, sizeof(*ds_bus_master));
138
139 ds_bus_master->data = ds_dev;
140 ds_bus_master->touch_bit = &ds9490r_touch_bit;
141 ds_bus_master->read_bit = &ds9490r_read_bit;
142 ds_bus_master->write_bit = &ds9490r_write_bit;
143 ds_bus_master->read_byte = &ds9490r_read_byte;
144 ds_bus_master->write_byte = &ds9490r_write_byte;
145 ds_bus_master->read_block = &ds9490r_read_block;
146 ds_bus_master->write_block = &ds9490r_write_block;
147 ds_bus_master->reset_bus = &ds9490r_reset;
148
149 err = w1_add_master_device(ds_bus_master);
150 if (err)
151 goto err_out_put_device;
152
153 return 0;
154
155err_out_put_device:
156 ds_put_device(ds_dev);
157err_out_free_bus_master:
158 kfree(ds_bus_master);
159
160 return err;
161}
162
163static void __devexit ds_w1_fini(void)
164{
165 w1_remove_master_device(ds_bus_master);
166 ds_put_device(ds_dev);
167 kfree(ds_bus_master);
168}
169
170module_init(ds_w1_init);
171module_exit(ds_w1_fini);
172
173MODULE_LICENSE("GPL");
174MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
diff --git a/drivers/w1/masters/dscore.c b/drivers/w1/masters/dscore.c
new file mode 100644
index 00000000000..2cf7776a708
--- /dev/null
+++ b/drivers/w1/masters/dscore.c
@@ -0,0 +1,795 @@
1/*
2 * dscore.c
3 *
4 * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
5 *
6 *
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>
26
27#include "dscore.h"
28
29static struct usb_device_id ds_id_table [] = {
30 { USB_DEVICE(0x04fa, 0x2490) },
31 { },
32};
33MODULE_DEVICE_TABLE(usb, ds_id_table);
34
35static int ds_probe(struct usb_interface *, const struct usb_device_id *);
36static void ds_disconnect(struct usb_interface *);
37
38int ds_touch_bit(struct ds_device *, u8, u8 *);
39int ds_read_byte(struct ds_device *, u8 *);
40int ds_read_bit(struct ds_device *, u8 *);
41int ds_write_byte(struct ds_device *, u8);
42int ds_write_bit(struct ds_device *, u8);
43static int ds_start_pulse(struct ds_device *, int);
44int ds_reset(struct ds_device *, struct ds_status *);
45struct ds_device * ds_get_device(void);
46void ds_put_device(struct ds_device *);
47
48static inline void ds_dump_status(unsigned char *, unsigned char *, int);
49static int ds_send_control(struct ds_device *, u16, u16);
50static int ds_send_control_mode(struct ds_device *, u16, u16);
51static int ds_send_control_cmd(struct ds_device *, u16, u16);
52
53
54static struct usb_driver ds_driver = {
55 .name = "DS9490R",
56 .probe = ds_probe,
57 .disconnect = ds_disconnect,
58 .id_table = ds_id_table,
59};
60
61static struct ds_device *ds_dev;
62
63struct ds_device * ds_get_device(void)
64{
65 if (ds_dev)
66 atomic_inc(&ds_dev->refcnt);
67 return ds_dev;
68}
69
70void ds_put_device(struct ds_device *dev)
71{
72 atomic_dec(&dev->refcnt);
73}
74
75static int ds_send_control_cmd(struct ds_device *dev, u16 value, u16 index)
76{
77 int err;
78
79 err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]),
80 CONTROL_CMD, 0x40, value, index, NULL, 0, 1000);
81 if (err < 0) {
82 printk(KERN_ERR "Failed to send command control message %x.%x: err=%d.\n",
83 value, index, err);
84 return err;
85 }
86
87 return err;
88}
89
90static int ds_send_control_mode(struct ds_device *dev, u16 value, u16 index)
91{
92 int err;
93
94 err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]),
95 MODE_CMD, 0x40, value, index, NULL, 0, 1000);
96 if (err < 0) {
97 printk(KERN_ERR "Failed to send mode control message %x.%x: err=%d.\n",
98 value, index, err);
99 return err;
100 }
101
102 return err;
103}
104
105static int ds_send_control(struct ds_device *dev, u16 value, u16 index)
106{
107 int err;
108
109 err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]),
110 COMM_CMD, 0x40, value, index, NULL, 0, 1000);
111 if (err < 0) {
112 printk(KERN_ERR "Failed to send control message %x.%x: err=%d.\n",
113 value, index, err);
114 return err;
115 }
116
117 return err;
118}
119
120static inline void ds_dump_status(unsigned char *buf, unsigned char *str, int off)
121{
122 printk("%45s: %8x\n", str, buf[off]);
123}
124
125static int ds_recv_status_nodump(struct ds_device *dev, struct ds_status *st,
126 unsigned char *buf, int size)
127{
128 int count, err;
129
130 memset(st, 0, sizeof(st));
131
132 count = 0;
133 err = usb_bulk_msg(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_STATUS]), buf, size, &count, 100);
134 if (err < 0) {
135 printk(KERN_ERR "Failed to read 1-wire data from 0x%x: err=%d.\n", dev->ep[EP_STATUS], err);
136 return err;
137 }
138
139 if (count >= sizeof(*st))
140 memcpy(st, buf, sizeof(*st));
141
142 return count;
143}
144
145static int ds_recv_status(struct ds_device *dev, struct ds_status *st)
146{
147 unsigned char buf[64];
148 int count, err = 0, i;
149
150 memcpy(st, buf, sizeof(*st));
151
152 count = ds_recv_status_nodump(dev, st, buf, sizeof(buf));
153 if (count < 0)
154 return err;
155
156 printk("0x%x: count=%d, status: ", dev->ep[EP_STATUS], count);
157 for (i=0; i<count; ++i)
158 printk("%02x ", buf[i]);
159 printk("\n");
160
161 if (count >= 16) {
162 ds_dump_status(buf, "enable flag", 0);
163 ds_dump_status(buf, "1-wire speed", 1);
164 ds_dump_status(buf, "strong pullup duration", 2);
165 ds_dump_status(buf, "programming pulse duration", 3);
166 ds_dump_status(buf, "pulldown slew rate control", 4);
167 ds_dump_status(buf, "write-1 low time", 5);
168 ds_dump_status(buf, "data sample offset/write-0 recovery time", 6);
169 ds_dump_status(buf, "reserved (test register)", 7);
170 ds_dump_status(buf, "device status flags", 8);
171 ds_dump_status(buf, "communication command byte 1", 9);
172 ds_dump_status(buf, "communication command byte 2", 10);
173 ds_dump_status(buf, "communication command buffer status", 11);
174 ds_dump_status(buf, "1-wire data output buffer status", 12);
175 ds_dump_status(buf, "1-wire data input buffer status", 13);
176 ds_dump_status(buf, "reserved", 14);
177 ds_dump_status(buf, "reserved", 15);
178 }
179
180 memcpy(st, buf, sizeof(*st));
181
182 if (st->status & ST_EPOF) {
183 printk(KERN_INFO "Resetting device after ST_EPOF.\n");
184 err = ds_send_control_cmd(dev, CTL_RESET_DEVICE, 0);
185 if (err)
186 return err;
187 count = ds_recv_status_nodump(dev, st, buf, sizeof(buf));
188 if (count < 0)
189 return err;
190 }
191#if 0
192 if (st->status & ST_IDLE) {
193 printk(KERN_INFO "Resetting pulse after ST_IDLE.\n");
194 err = ds_start_pulse(dev, PULLUP_PULSE_DURATION);
195 if (err)
196 return err;
197 }
198#endif
199
200 return err;
201}
202
203static int ds_recv_data(struct ds_device *dev, unsigned char *buf, int size)
204{
205 int count, err;
206 struct ds_status st;
207
208 count = 0;
209 err = usb_bulk_msg(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_DATA_IN]),
210 buf, size, &count, 1000);
211 if (err < 0) {
212 printk(KERN_INFO "Clearing ep0x%x.\n", dev->ep[EP_DATA_IN]);
213 usb_clear_halt(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_DATA_IN]));
214 ds_recv_status(dev, &st);
215 return err;
216 }
217
218#if 0
219 {
220 int i;
221
222 printk("%s: count=%d: ", __func__, count);
223 for (i=0; i<count; ++i)
224 printk("%02x ", buf[i]);
225 printk("\n");
226 }
227#endif
228 return count;
229}
230
231static int ds_send_data(struct ds_device *dev, unsigned char *buf, int len)
232{
233 int count, err;
234
235 count = 0;
236 err = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->ep[EP_DATA_OUT]), buf, len, &count, 1000);
237 if (err < 0) {
238 printk(KERN_ERR "Failed to read 1-wire data from 0x02: err=%d.\n", err);
239 return err;
240 }
241
242 return err;
243}
244
245#if 0
246
247int ds_stop_pulse(struct ds_device *dev, int limit)
248{
249 struct ds_status st;
250 int count = 0, err = 0;
251 u8 buf[0x20];
252
253 do {
254 err = ds_send_control(dev, CTL_HALT_EXE_IDLE, 0);
255 if (err)
256 break;
257 err = ds_send_control(dev, CTL_RESUME_EXE, 0);
258 if (err)
259 break;
260 err = ds_recv_status_nodump(dev, &st, buf, sizeof(buf));
261 if (err)
262 break;
263
264 if ((st.status & ST_SPUA) == 0) {
265 err = ds_send_control_mode(dev, MOD_PULSE_EN, 0);
266 if (err)
267 break;
268 }
269 } while(++count < limit);
270
271 return err;
272}
273
274int ds_detect(struct ds_device *dev, struct ds_status *st)
275{
276 int err;
277
278 err = ds_send_control_cmd(dev, CTL_RESET_DEVICE, 0);
279 if (err)
280 return err;
281
282 err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM, 0);
283 if (err)
284 return err;
285
286 err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM | COMM_TYPE, 0x40);
287 if (err)
288 return err;
289
290 err = ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_PROG);
291 if (err)
292 return err;
293
294 err = ds_recv_status(dev, st);
295
296 return err;
297}
298
299#endif /* 0 */
300
301static int ds_wait_status(struct ds_device *dev, struct ds_status *st)
302{
303 u8 buf[0x20];
304 int err, count = 0;
305
306 do {
307 err = ds_recv_status_nodump(dev, st, buf, sizeof(buf));
308#if 0
309 if (err >= 0) {
310 int i;
311 printk("0x%x: count=%d, status: ", dev->ep[EP_STATUS], err);
312 for (i=0; i<err; ++i)
313 printk("%02x ", buf[i]);
314 printk("\n");
315 }
316#endif
317 } while(!(buf[0x08] & 0x20) && !(err < 0) && ++count < 100);
318
319
320 if (((err > 16) && (buf[0x10] & 0x01)) || count >= 100 || err < 0) {
321 ds_recv_status(dev, st);
322 return -1;
323 } else
324 return 0;
325}
326
327int ds_reset(struct ds_device *dev, struct ds_status *st)
328{
329 int err;
330
331 //err = ds_send_control(dev, COMM_1_WIRE_RESET | COMM_F | COMM_IM | COMM_SE, SPEED_FLEXIBLE);
332 err = ds_send_control(dev, 0x43, SPEED_NORMAL);
333 if (err)
334 return err;
335
336 ds_wait_status(dev, st);
337#if 0
338 if (st->command_buffer_status) {
339 printk(KERN_INFO "Short circuit.\n");
340 return -EIO;
341 }
342#endif
343
344 return 0;
345}
346
347#if 0
348int ds_set_speed(struct ds_device *dev, int speed)
349{
350 int err;
351
352 if (speed != SPEED_NORMAL && speed != SPEED_FLEXIBLE && speed != SPEED_OVERDRIVE)
353 return -EINVAL;
354
355 if (speed != SPEED_OVERDRIVE)
356 speed = SPEED_FLEXIBLE;
357
358 speed &= 0xff;
359
360 err = ds_send_control_mode(dev, MOD_1WIRE_SPEED, speed);
361 if (err)
362 return err;
363
364 return err;
365}
366#endif /* 0 */
367
368static int ds_start_pulse(struct ds_device *dev, int delay)
369{
370 int err;
371 u8 del = 1 + (u8)(delay >> 4);
372 struct ds_status st;
373
374#if 0
375 err = ds_stop_pulse(dev, 10);
376 if (err)
377 return err;
378
379 err = ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_SPUE);
380 if (err)
381 return err;
382#endif
383 err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM, del);
384 if (err)
385 return err;
386
387 err = ds_send_control(dev, COMM_PULSE | COMM_IM | COMM_F, 0);
388 if (err)
389 return err;
390
391 mdelay(delay);
392
393 ds_wait_status(dev, &st);
394
395 return err;
396}
397
398int ds_touch_bit(struct ds_device *dev, u8 bit, u8 *tbit)
399{
400 int err, count;
401 struct ds_status st;
402 u16 value = (COMM_BIT_IO | COMM_IM) | ((bit) ? COMM_D : 0);
403 u16 cmd;
404
405 err = ds_send_control(dev, value, 0);
406 if (err)
407 return err;
408
409 count = 0;
410 do {
411 err = ds_wait_status(dev, &st);
412 if (err)
413 return err;
414
415 cmd = st.command0 | (st.command1 << 8);
416 } while (cmd != value && ++count < 10);
417
418 if (err < 0 || count >= 10) {
419 printk(KERN_ERR "Failed to obtain status.\n");
420 return -EINVAL;
421 }
422
423 err = ds_recv_data(dev, tbit, sizeof(*tbit));
424 if (err < 0)
425 return err;
426
427 return 0;
428}
429
430int ds_write_bit(struct ds_device *dev, u8 bit)
431{
432 int err;
433 struct ds_status st;
434
435 err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | (bit) ? COMM_D : 0, 0);
436 if (err)
437 return err;
438
439 ds_wait_status(dev, &st);
440
441 return 0;
442}
443
444int ds_write_byte(struct ds_device *dev, u8 byte)
445{
446 int err;
447 struct ds_status st;
448 u8 rbyte;
449
450 err = ds_send_control(dev, COMM_BYTE_IO | COMM_IM | COMM_SPU, byte);
451 if (err)
452 return err;
453
454 err = ds_wait_status(dev, &st);
455 if (err)
456 return err;
457
458 err = ds_recv_data(dev, &rbyte, sizeof(rbyte));
459 if (err < 0)
460 return err;
461
462 ds_start_pulse(dev, PULLUP_PULSE_DURATION);
463
464 return !(byte == rbyte);
465}
466
467int ds_read_bit(struct ds_device *dev, u8 *bit)
468{
469 int err;
470
471 err = ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_SPUE);
472 if (err)
473 return err;
474
475 err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | COMM_SPU | COMM_D, 0);
476 if (err)
477 return err;
478
479 err = ds_recv_data(dev, bit, sizeof(*bit));
480 if (err < 0)
481 return err;
482
483 return 0;
484}
485
486int ds_read_byte(struct ds_device *dev, u8 *byte)
487{
488 int err;
489 struct ds_status st;
490
491 err = ds_send_control(dev, COMM_BYTE_IO | COMM_IM , 0xff);
492 if (err)
493 return err;
494
495 ds_wait_status(dev, &st);
496
497 err = ds_recv_data(dev, byte, sizeof(*byte));
498 if (err < 0)
499 return err;
500
501 return 0;
502}
503
504int ds_read_block(struct ds_device *dev, u8 *buf, int len)
505{
506 struct ds_status st;
507 int err;
508
509 if (len > 64*1024)
510 return -E2BIG;
511
512 memset(buf, 0xFF, len);
513
514 err = ds_send_data(dev, buf, len);
515 if (err < 0)
516 return err;
517
518 err = ds_send_control(dev, COMM_BLOCK_IO | COMM_IM | COMM_SPU, len);
519 if (err)
520 return err;
521
522 ds_wait_status(dev, &st);
523
524 memset(buf, 0x00, len);
525 err = ds_recv_data(dev, buf, len);
526
527 return err;
528}
529
530int ds_write_block(struct ds_device *dev, u8 *buf, int len)
531{
532 int err;
533 struct ds_status st;
534
535 err = ds_send_data(dev, buf, len);
536 if (err < 0)
537 return err;
538
539 ds_wait_status(dev, &st);
540
541 err = ds_send_control(dev, COMM_BLOCK_IO | COMM_IM | COMM_SPU, len);
542 if (err)
543 return err;
544
545 ds_wait_status(dev, &st);
546
547 err = ds_recv_data(dev, buf, len);
548 if (err < 0)
549 return err;
550
551 ds_start_pulse(dev, PULLUP_PULSE_DURATION);
552
553 return !(err == len);
554}
555
556#if 0
557
558int ds_search(struct ds_device *dev, u64 init, u64 *buf, u8 id_number, int conditional_search)
559{
560 int err;
561 u16 value, index;
562 struct ds_status st;
563
564 memset(buf, 0, sizeof(buf));
565
566 err = ds_send_data(ds_dev, (unsigned char *)&init, 8);
567 if (err)
568 return err;
569
570 ds_wait_status(ds_dev, &st);
571
572 value = COMM_SEARCH_ACCESS | COMM_IM | COMM_SM | COMM_F | COMM_RTS;
573 index = (conditional_search ? 0xEC : 0xF0) | (id_number << 8);
574 err = ds_send_control(ds_dev, value, index);
575 if (err)
576 return err;
577
578 ds_wait_status(ds_dev, &st);
579
580 err = ds_recv_data(ds_dev, (unsigned char *)buf, 8*id_number);
581 if (err < 0)
582 return err;
583
584 return err/8;
585}
586
587int ds_match_access(struct ds_device *dev, u64 init)
588{
589 int err;
590 struct ds_status st;
591
592 err = ds_send_data(dev, (unsigned char *)&init, sizeof(init));
593 if (err)
594 return err;
595
596 ds_wait_status(dev, &st);
597
598 err = ds_send_control(dev, COMM_MATCH_ACCESS | COMM_IM | COMM_RST, 0x0055);
599 if (err)
600 return err;
601
602 ds_wait_status(dev, &st);
603
604 return 0;
605}
606
607int ds_set_path(struct ds_device *dev, u64 init)
608{
609 int err;
610 struct ds_status st;
611 u8 buf[9];
612
613 memcpy(buf, &init, 8);
614 buf[8] = BRANCH_MAIN;
615
616 err = ds_send_data(dev, buf, sizeof(buf));
617 if (err)
618 return err;
619
620 ds_wait_status(dev, &st);
621
622 err = ds_send_control(dev, COMM_SET_PATH | COMM_IM | COMM_RST, 0);
623 if (err)
624 return err;
625
626 ds_wait_status(dev, &st);
627
628 return 0;
629}
630
631#endif /* 0 */
632
633static int ds_probe(struct usb_interface *intf,
634 const struct usb_device_id *udev_id)
635{
636 struct usb_device *udev = interface_to_usbdev(intf);
637 struct usb_endpoint_descriptor *endpoint;
638 struct usb_host_interface *iface_desc;
639 int i, err;
640
641 ds_dev = kmalloc(sizeof(struct ds_device), GFP_KERNEL);
642 if (!ds_dev) {
643 printk(KERN_INFO "Failed to allocate new DS9490R structure.\n");
644 return -ENOMEM;
645 }
646
647 ds_dev->udev = usb_get_dev(udev);
648 usb_set_intfdata(intf, ds_dev);
649
650 err = usb_set_interface(ds_dev->udev, intf->altsetting[0].desc.bInterfaceNumber, 3);
651 if (err) {
652 printk(KERN_ERR "Failed to set alternative setting 3 for %d interface: err=%d.\n",
653 intf->altsetting[0].desc.bInterfaceNumber, err);
654 return err;
655 }
656
657 err = usb_reset_configuration(ds_dev->udev);
658 if (err) {
659 printk(KERN_ERR "Failed to reset configuration: err=%d.\n", err);
660 return err;
661 }
662
663 iface_desc = &intf->altsetting[0];
664 if (iface_desc->desc.bNumEndpoints != NUM_EP-1) {
665 printk(KERN_INFO "Num endpoints=%d. It is not DS9490R.\n", iface_desc->desc.bNumEndpoints);
666 return -ENODEV;
667 }
668
669 atomic_set(&ds_dev->refcnt, 0);
670 memset(ds_dev->ep, 0, sizeof(ds_dev->ep));
671
672 /*
673 * This loop doesn'd show control 0 endpoint,
674 * so we will fill only 1-3 endpoints entry.
675 */
676 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
677 endpoint = &iface_desc->endpoint[i].desc;
678
679 ds_dev->ep[i+1] = endpoint->bEndpointAddress;
680
681 printk("%d: addr=%x, size=%d, dir=%s, type=%x\n",
682 i, endpoint->bEndpointAddress, le16_to_cpu(endpoint->wMaxPacketSize),
683 (endpoint->bEndpointAddress & USB_DIR_IN)?"IN":"OUT",
684 endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
685 }
686
687#if 0
688 {
689 int err, i;
690 u64 buf[3];
691 u64 init=0xb30000002078ee81ull;
692 struct ds_status st;
693
694 ds_reset(ds_dev, &st);
695 err = ds_search(ds_dev, init, buf, 3, 0);
696 if (err < 0)
697 return err;
698 for (i=0; i<err; ++i)
699 printk("%d: %llx\n", i, buf[i]);
700
701 printk("Resetting...\n");
702 ds_reset(ds_dev, &st);
703 printk("Setting path for %llx.\n", init);
704 err = ds_set_path(ds_dev, init);
705 if (err)
706 return err;
707 printk("Calling MATCH_ACCESS.\n");
708 err = ds_match_access(ds_dev, init);
709 if (err)
710 return err;
711
712 printk("Searching the bus...\n");
713 err = ds_search(ds_dev, init, buf, 3, 0);
714
715 printk("ds_search() returned %d\n", err);
716
717 if (err < 0)
718 return err;
719 for (i=0; i<err; ++i)
720 printk("%d: %llx\n", i, buf[i]);
721
722 return 0;
723 }
724#endif
725
726 return 0;
727}
728
729static void ds_disconnect(struct usb_interface *intf)
730{
731 struct ds_device *dev;
732
733 dev = usb_get_intfdata(intf);
734 usb_set_intfdata(intf, NULL);
735
736 while (atomic_read(&dev->refcnt)) {
737 printk(KERN_INFO "Waiting for DS to become free: refcnt=%d.\n",
738 atomic_read(&dev->refcnt));
739
740 if (msleep_interruptible(1000))
741 flush_signals(current);
742 }
743
744 usb_put_dev(dev->udev);
745 kfree(dev);
746 ds_dev = NULL;
747}
748
749static int ds_init(void)
750{
751 int err;
752
753 err = usb_register(&ds_driver);
754 if (err) {
755 printk(KERN_INFO "Failed to register DS9490R USB device: err=%d.\n", err);
756 return err;
757 }
758
759 return 0;
760}
761
762static void ds_fini(void)
763{
764 usb_deregister(&ds_driver);
765}
766
767module_init(ds_init);
768module_exit(ds_fini);
769
770MODULE_LICENSE("GPL");
771MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
772
773EXPORT_SYMBOL(ds_touch_bit);
774EXPORT_SYMBOL(ds_read_byte);
775EXPORT_SYMBOL(ds_read_bit);
776EXPORT_SYMBOL(ds_read_block);
777EXPORT_SYMBOL(ds_write_byte);
778EXPORT_SYMBOL(ds_write_bit);
779EXPORT_SYMBOL(ds_write_block);
780EXPORT_SYMBOL(ds_reset);
781EXPORT_SYMBOL(ds_get_device);
782EXPORT_SYMBOL(ds_put_device);
783
784/*
785 * This functions can be used for EEPROM programming,
786 * when driver will be included into mainline this will
787 * require uncommenting.
788 */
789#if 0
790EXPORT_SYMBOL(ds_start_pulse);
791EXPORT_SYMBOL(ds_set_speed);
792EXPORT_SYMBOL(ds_detect);
793EXPORT_SYMBOL(ds_stop_pulse);
794EXPORT_SYMBOL(ds_search);
795#endif
diff --git a/drivers/w1/masters/dscore.h b/drivers/w1/masters/dscore.h
new file mode 100644
index 00000000000..6cf5671d6eb
--- /dev/null
+++ b/drivers/w1/masters/dscore.h
@@ -0,0 +1,166 @@
1/*
2 * dscore.h
3 *
4 * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
5 *
6 *
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#ifndef __DSCORE_H
23#define __DSCORE_H
24
25#include <linux/usb.h>
26#include <asm/atomic.h>
27
28/* COMMAND TYPE CODES */
29#define CONTROL_CMD 0x00
30#define COMM_CMD 0x01
31#define MODE_CMD 0x02
32
33/* CONTROL COMMAND CODES */
34#define CTL_RESET_DEVICE 0x0000
35#define CTL_START_EXE 0x0001
36#define CTL_RESUME_EXE 0x0002
37#define CTL_HALT_EXE_IDLE 0x0003
38#define CTL_HALT_EXE_DONE 0x0004
39#define CTL_FLUSH_COMM_CMDS 0x0007
40#define CTL_FLUSH_RCV_BUFFER 0x0008
41#define CTL_FLUSH_XMT_BUFFER 0x0009
42#define CTL_GET_COMM_CMDS 0x000A
43
44/* MODE COMMAND CODES */
45#define MOD_PULSE_EN 0x0000
46#define MOD_SPEED_CHANGE_EN 0x0001
47#define MOD_1WIRE_SPEED 0x0002
48#define MOD_STRONG_PU_DURATION 0x0003
49#define MOD_PULLDOWN_SLEWRATE 0x0004
50#define MOD_PROG_PULSE_DURATION 0x0005
51#define MOD_WRITE1_LOWTIME 0x0006
52#define MOD_DSOW0_TREC 0x0007
53
54/* COMMUNICATION COMMAND CODES */
55#define COMM_ERROR_ESCAPE 0x0601
56#define COMM_SET_DURATION 0x0012
57#define COMM_BIT_IO 0x0020
58#define COMM_PULSE 0x0030
59#define COMM_1_WIRE_RESET 0x0042
60#define COMM_BYTE_IO 0x0052
61#define COMM_MATCH_ACCESS 0x0064
62#define COMM_BLOCK_IO 0x0074
63#define COMM_READ_STRAIGHT 0x0080
64#define COMM_DO_RELEASE 0x6092
65#define COMM_SET_PATH 0x00A2
66#define COMM_WRITE_SRAM_PAGE 0x00B2
67#define COMM_WRITE_EPROM 0x00C4
68#define COMM_READ_CRC_PROT_PAGE 0x00D4
69#define COMM_READ_REDIRECT_PAGE_CRC 0x21E4
70#define COMM_SEARCH_ACCESS 0x00F4
71
72/* Communication command bits */
73#define COMM_TYPE 0x0008
74#define COMM_SE 0x0008
75#define COMM_D 0x0008
76#define COMM_Z 0x0008
77#define COMM_CH 0x0008
78#define COMM_SM 0x0008
79#define COMM_R 0x0008
80#define COMM_IM 0x0001
81
82#define COMM_PS 0x4000
83#define COMM_PST 0x4000
84#define COMM_CIB 0x4000
85#define COMM_RTS 0x4000
86#define COMM_DT 0x2000
87#define COMM_SPU 0x1000
88#define COMM_F 0x0800
89#define COMM_NTP 0x0400
90#define COMM_ICP 0x0200
91#define COMM_RST 0x0100
92
93#define PULSE_PROG 0x01
94#define PULSE_SPUE 0x02
95
96#define BRANCH_MAIN 0xCC
97#define BRANCH_AUX 0x33
98
99/*
100 * Duration of the strong pull-up pulse in milliseconds.
101 */
102#define PULLUP_PULSE_DURATION 750
103
104/* Status flags */
105#define ST_SPUA 0x01 /* Strong Pull-up is active */
106#define ST_PRGA 0x02 /* 12V programming pulse is being generated */
107#define ST_12VP 0x04 /* external 12V programming voltage is present */
108#define ST_PMOD 0x08 /* DS2490 powered from USB and external sources */
109#define ST_HALT 0x10 /* DS2490 is currently halted */
110#define ST_IDLE 0x20 /* DS2490 is currently idle */
111#define ST_EPOF 0x80
112
113#define SPEED_NORMAL 0x00
114#define SPEED_FLEXIBLE 0x01
115#define SPEED_OVERDRIVE 0x02
116
117#define NUM_EP 4
118#define EP_CONTROL 0
119#define EP_STATUS 1
120#define EP_DATA_OUT 2
121#define EP_DATA_IN 3
122
123struct ds_device
124{
125 struct usb_device *udev;
126 struct usb_interface *intf;
127
128 int ep[NUM_EP];
129
130 atomic_t refcnt;
131};
132
133struct ds_status
134{
135 u8 enable;
136 u8 speed;
137 u8 pullup_dur;
138 u8 ppuls_dur;
139 u8 pulldown_slew;
140 u8 write1_time;
141 u8 write0_time;
142 u8 reserved0;
143 u8 status;
144 u8 command0;
145 u8 command1;
146 u8 command_buffer_status;
147 u8 data_out_buffer_status;
148 u8 data_in_buffer_status;
149 u8 reserved1;
150 u8 reserved2;
151
152};
153
154int ds_touch_bit(struct ds_device *, u8, u8 *);
155int ds_read_byte(struct ds_device *, u8 *);
156int ds_read_bit(struct ds_device *, u8 *);
157int ds_write_byte(struct ds_device *, u8);
158int ds_write_bit(struct ds_device *, u8);
159int ds_reset(struct ds_device *, struct ds_status *);
160struct ds_device * ds_get_device(void);
161void ds_put_device(struct ds_device *);
162int ds_write_block(struct ds_device *, u8 *, int);
163int ds_read_block(struct ds_device *, u8 *, int);
164
165#endif /* __DSCORE_H */
166
diff --git a/drivers/w1/masters/matrox_w1.c b/drivers/w1/masters/matrox_w1.c
new file mode 100644
index 00000000000..591809cbbb9
--- /dev/null
+++ b/drivers/w1/masters/matrox_w1.c
@@ -0,0 +1,247 @@
1/*
2 * matrox_w1.c
3 *
4 * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
5 *
6 *
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 <asm/types.h>
23#include <asm/atomic.h>
24#include <asm/io.h>
25
26#include <linux/delay.h>
27#include <linux/kernel.h>
28#include <linux/module.h>
29#include <linux/list.h>
30#include <linux/interrupt.h>
31#include <linux/spinlock.h>
32#include <linux/timer.h>
33#include <linux/slab.h>
34#include <linux/pci_ids.h>
35#include <linux/pci.h>
36#include <linux/timer.h>
37
38#include "../w1.h"
39#include "../w1_int.h"
40#include "../w1_log.h"
41
42MODULE_LICENSE("GPL");
43MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
44MODULE_DESCRIPTION("Driver for transport(Dallas 1-wire prtocol) over VGA DDC(matrox gpio).");
45
46static struct pci_device_id matrox_w1_tbl[] = {
47 { PCI_DEVICE(PCI_VENDOR_ID_MATROX, PCI_DEVICE_ID_MATROX_G400) },
48 { },
49};
50MODULE_DEVICE_TABLE(pci, matrox_w1_tbl);
51
52static int __devinit matrox_w1_probe(struct pci_dev *, const struct pci_device_id *);
53static void __devexit matrox_w1_remove(struct pci_dev *);
54
55static struct pci_driver matrox_w1_pci_driver = {
56 .name = "matrox_w1",
57 .id_table = matrox_w1_tbl,
58 .probe = matrox_w1_probe,
59 .remove = __devexit_p(matrox_w1_remove),
60};
61
62/*
63 * Matrox G400 DDC registers.
64 */
65
66#define MATROX_G400_DDC_CLK (1<<4)
67#define MATROX_G400_DDC_DATA (1<<1)
68
69#define MATROX_BASE 0x3C00
70#define MATROX_STATUS 0x1e14
71
72#define MATROX_PORT_INDEX_OFFSET 0x00
73#define MATROX_PORT_DATA_OFFSET 0x0A
74
75#define MATROX_GET_CONTROL 0x2A
76#define MATROX_GET_DATA 0x2B
77#define MATROX_CURSOR_CTL 0x06
78
79struct matrox_device
80{
81 void __iomem *base_addr;
82 void __iomem *port_index;
83 void __iomem *port_data;
84 u8 data_mask;
85
86 unsigned long phys_addr;
87 void __iomem *virt_addr;
88 unsigned long found;
89
90 struct w1_bus_master *bus_master;
91};
92
93static u8 matrox_w1_read_ddc_bit(void *);
94static void matrox_w1_write_ddc_bit(void *, u8);
95
96/*
97 * These functions read and write DDC Data bit.
98 *
99 * Using tristate pins, since i can't find any open-drain pin in whole motherboard.
100 * Unfortunately we can't connect to Intel's 82801xx IO controller
101 * since we don't know motherboard schema, wich has pretty unused(may be not) GPIO.
102 *
103 * I've heard that PIIX also has open drain pin.
104 *
105 * Port mapping.
106 */
107static __inline__ u8 matrox_w1_read_reg(struct matrox_device *dev, u8 reg)
108{
109 u8 ret;
110
111 writeb(reg, dev->port_index);
112 ret = readb(dev->port_data);
113 barrier();
114
115 return ret;
116}
117
118static __inline__ void matrox_w1_write_reg(struct matrox_device *dev, u8 reg, u8 val)
119{
120 writeb(reg, dev->port_index);
121 writeb(val, dev->port_data);
122 wmb();
123}
124
125static void matrox_w1_write_ddc_bit(void *data, u8 bit)
126{
127 u8 ret;
128 struct matrox_device *dev = data;
129
130 if (bit)
131 bit = 0;
132 else
133 bit = dev->data_mask;
134
135 ret = matrox_w1_read_reg(dev, MATROX_GET_CONTROL);
136 matrox_w1_write_reg(dev, MATROX_GET_CONTROL, ((ret & ~dev->data_mask) | bit));
137 matrox_w1_write_reg(dev, MATROX_GET_DATA, 0x00);
138}
139
140static u8 matrox_w1_read_ddc_bit(void *data)
141{
142 u8 ret;
143 struct matrox_device *dev = data;
144
145 ret = matrox_w1_read_reg(dev, MATROX_GET_DATA);
146
147 return ret;
148}
149
150static void matrox_w1_hw_init(struct matrox_device *dev)
151{
152 matrox_w1_write_reg(dev, MATROX_GET_DATA, 0xFF);
153 matrox_w1_write_reg(dev, MATROX_GET_CONTROL, 0x00);
154}
155
156static int __devinit matrox_w1_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
157{
158 struct matrox_device *dev;
159 int err;
160
161 assert(pdev != NULL);
162 assert(ent != NULL);
163
164 if (pdev->vendor != PCI_VENDOR_ID_MATROX || pdev->device != PCI_DEVICE_ID_MATROX_G400)
165 return -ENODEV;
166
167 dev = kmalloc(sizeof(struct matrox_device) +
168 sizeof(struct w1_bus_master), GFP_KERNEL);
169 if (!dev) {
170 dev_err(&pdev->dev,
171 "%s: Failed to create new matrox_device object.\n",
172 __func__);
173 return -ENOMEM;
174 }
175
176 memset(dev, 0, sizeof(struct matrox_device) + sizeof(struct w1_bus_master));
177
178 dev->bus_master = (struct w1_bus_master *)(dev + 1);
179
180 /*
181 * True for G400, for some other we need resource 0, see drivers/video/matrox/matroxfb_base.c
182 */
183
184 dev->phys_addr = pci_resource_start(pdev, 1);
185
186 dev->virt_addr = ioremap_nocache(dev->phys_addr, 16384);
187 if (!dev->virt_addr) {
188 dev_err(&pdev->dev, "%s: failed to ioremap(0x%lx, %d).\n",
189 __func__, dev->phys_addr, 16384);
190 err = -EIO;
191 goto err_out_free_device;
192 }
193
194 dev->base_addr = dev->virt_addr + MATROX_BASE;
195 dev->port_index = dev->base_addr + MATROX_PORT_INDEX_OFFSET;
196 dev->port_data = dev->base_addr + MATROX_PORT_DATA_OFFSET;
197 dev->data_mask = (MATROX_G400_DDC_DATA);
198
199 matrox_w1_hw_init(dev);
200
201 dev->bus_master->data = dev;
202 dev->bus_master->read_bit = &matrox_w1_read_ddc_bit;
203 dev->bus_master->write_bit = &matrox_w1_write_ddc_bit;
204
205 err = w1_add_master_device(dev->bus_master);
206 if (err)
207 goto err_out_free_device;
208
209 pci_set_drvdata(pdev, dev);
210
211 dev->found = 1;
212
213 dev_info(&pdev->dev, "Matrox G400 GPIO transport layer for 1-wire.\n");
214
215 return 0;
216
217err_out_free_device:
218 kfree(dev);
219
220 return err;
221}
222
223static void __devexit matrox_w1_remove(struct pci_dev *pdev)
224{
225 struct matrox_device *dev = pci_get_drvdata(pdev);
226
227 assert(dev != NULL);
228
229 if (dev->found) {
230 w1_remove_master_device(dev->bus_master);
231 iounmap(dev->virt_addr);
232 }
233 kfree(dev);
234}
235
236static int __init matrox_w1_init(void)
237{
238 return pci_register_driver(&matrox_w1_pci_driver);
239}
240
241static void __exit matrox_w1_fini(void)
242{
243 pci_unregister_driver(&matrox_w1_pci_driver);
244}
245
246module_init(matrox_w1_init);
247module_exit(matrox_w1_fini);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-17 19:41:01 -0500