1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
|
/* $NetBSD: sdtemp.c,v 1.23 2014/01/09 16:51:05 mlelstv Exp $ */
/*
* Copyright (c) 2009 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Goyette.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sdtemp.c,v 1.23 2014/01/09 16:51:05 mlelstv Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kmem.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/endian.h>
#include <sys/module.h>
#include <dev/sysmon/sysmonvar.h>
#include <dev/i2c/i2cvar.h>
#include <dev/i2c/sdtemp_reg.h>
struct sdtemp_softc {
device_t sc_dev;
i2c_tag_t sc_tag;
int sc_address;
struct sysmon_envsys *sc_sme;
envsys_data_t *sc_sensor;
sysmon_envsys_lim_t sc_deflims;
uint32_t sc_defprops;
int sc_resolution;
uint16_t sc_capability;
};
static int sdtemp_match(device_t, cfdata_t, void *);
static void sdtemp_attach(device_t, device_t, void *);
static int sdtemp_detach(device_t, int);
CFATTACH_DECL_NEW(sdtemp, sizeof(struct sdtemp_softc),
sdtemp_match, sdtemp_attach, sdtemp_detach, NULL);
static void sdtemp_refresh(struct sysmon_envsys *, envsys_data_t *);
static void sdtemp_get_limits(struct sysmon_envsys *, envsys_data_t *,
sysmon_envsys_lim_t *, uint32_t *);
static void sdtemp_set_limits(struct sysmon_envsys *, envsys_data_t *,
sysmon_envsys_lim_t *, uint32_t *);
#ifdef NOT_YET
static int sdtemp_read_8(struct sdtemp_softc *, uint8_t, uint8_t *);
static int sdtemp_write_8(struct sdtemp_softc *, uint8_t, uint8_t);
#endif /* NOT YET */
static int sdtemp_read_16(struct sdtemp_softc *, uint8_t, uint16_t *);
static int sdtemp_write_16(struct sdtemp_softc *, uint8_t, uint16_t);
static uint32_t sdtemp_decode_temp(struct sdtemp_softc *, uint16_t);
static bool sdtemp_pmf_suspend(device_t, const pmf_qual_t *);
static bool sdtemp_pmf_resume(device_t, const pmf_qual_t *);
struct sdtemp_dev_entry {
const uint16_t sdtemp_mfg_id;
const uint16_t sdtemp_devrev;
const uint16_t sdtemp_mask;
const uint8_t sdtemp_resolution;
const char *sdtemp_desc;
};
/* Convert sysmon_envsys uKelvin value to simple degC */
#define __UK2C(uk) (((uk) - 273150000) / 1000000)
/*
* List of devices known to conform to JEDEC JC42.4
*
* NOTE: A non-negative value for resolution indicates that the sensor
* resolution is fixed at that number of fractional bits; a negative
* value indicates that the sensor needs to be configured. In either
* case, trip-point registers are fixed at two-bit (0.25C) resolution.
*/
static const struct sdtemp_dev_entry
sdtemp_dev_table[] = {
{ MAXIM_MANUFACTURER_ID, MAX_6604_DEVICE_ID, MAX_6604_MASK, 3,
"Maxim MAX6604" },
{ MCP_MANUFACTURER_ID, MCP_9805_DEVICE_ID, MCP_9805_MASK, 2,
"Microchip Tech MCP9805/MCP9843" },
{ MCP_MANUFACTURER_ID, MCP_98243_DEVICE_ID, MCP_98243_MASK, -4,
"Microchip Tech MCP98243" },
{ MCP_MANUFACTURER_ID, MCP_98242_DEVICE_ID, MCP_98242_MASK, -4,
"Microchip Tech MCP98242" },
{ ADT_MANUFACTURER_ID, ADT_7408_DEVICE_ID, ADT_7408_MASK, 4,
"Analog Devices ADT7408" },
{ NXP_MANUFACTURER_ID, NXP_SE98_DEVICE_ID, NXP_SE98_MASK, 3,
"NXP Semiconductors SE97B/SE98" },
{ NXP_MANUFACTURER_ID, NXP_SE97_DEVICE_ID, NXP_SE97_MASK, 3,
"NXP Semiconductors SE97" },
{ STTS_MANUFACTURER_ID, STTS_424E_DEVICE_ID, STTS_424E_MASK, 2,
"STmicroelectronics STTS424E" },
{ STTS_MANUFACTURER_ID, STTS_424_DEVICE_ID, STTS_424_MASK, 2,
"STmicroelectronics STTS424" },
{ STTS_MANUFACTURER_ID, STTS_2002_DEVICE_ID, STTS_2002_MASK, 2,
"STmicroelectronics STTS2002" },
{ STTS_MANUFACTURER_ID, STTS_2004_DEVICE_ID, STTS_2004_MASK, 2,
"STmicroelectronics STTS2002" },
{ STTS_MANUFACTURER_ID, STTS_3000_DEVICE_ID, STTS_3000_MASK, 2,
"STmicroelectronics STTS3000" },
{ CAT_MANUFACTURER_ID, CAT_34TS02_DEVICE_ID, CAT_34TS02_MASK, 4,
"Catalyst CAT34TS02/CAT6095" },
{ IDT_MANUFACTURER_ID, IDT_TS3000B3_DEVICE_ID, IDT_TS3000B3_MASK, 4,
"Integrated Device Technology TS3000B3/TSE2002B3" },
{ 0, 0, 0, 2, "Unknown" }
};
static int
sdtemp_lookup(uint16_t mfg, uint16_t devrev)
{
int i;
for (i = 0; sdtemp_dev_table[i].sdtemp_mfg_id; i++) {
if (mfg != sdtemp_dev_table[i].sdtemp_mfg_id)
continue;
if ((devrev & sdtemp_dev_table[i].sdtemp_mask) ==
sdtemp_dev_table[i].sdtemp_devrev)
break;
}
return i;
}
static int
sdtemp_match(device_t parent, cfdata_t cf, void *aux)
{
struct i2c_attach_args *ia = aux;
uint16_t mfgid, devid;
struct sdtemp_softc sc;
int i, error;
sc.sc_tag = ia->ia_tag;
sc.sc_address = ia->ia_addr;
if ((ia->ia_addr & SDTEMP_ADDRMASK) != SDTEMP_ADDR)
return 0;
/* Verify that we can read the manufacturer ID & Device ID */
iic_acquire_bus(sc.sc_tag, 0);
error = sdtemp_read_16(&sc, SDTEMP_REG_MFG_ID, &mfgid) |
sdtemp_read_16(&sc, SDTEMP_REG_DEV_REV, &devid);
iic_release_bus(sc.sc_tag, 0);
if (error)
return 0;
i = sdtemp_lookup(mfgid, devid);
if (sdtemp_dev_table[i].sdtemp_mfg_id == 0) {
aprint_debug("sdtemp: No match for mfg 0x%04x dev 0x%02x "
"rev 0x%02x at address 0x%02x\n", mfgid, devid >> 8,
devid & 0xff, sc.sc_address);
return 0;
}
return 1;
}
static void
sdtemp_attach(device_t parent, device_t self, void *aux)
{
struct sdtemp_softc *sc = device_private(self);
struct i2c_attach_args *ia = aux;
uint16_t mfgid, devid;
int i, error;
sc->sc_tag = ia->ia_tag;
sc->sc_address = ia->ia_addr;
sc->sc_dev = self;
iic_acquire_bus(sc->sc_tag, 0);
if ((error = sdtemp_read_16(sc, SDTEMP_REG_MFG_ID, &mfgid)) != 0 ||
(error = sdtemp_read_16(sc, SDTEMP_REG_DEV_REV, &devid)) != 0) {
iic_release_bus(sc->sc_tag, 0);
aprint_error(": attach error %d\n", error);
return;
}
i = sdtemp_lookup(mfgid, devid);
sc->sc_resolution =
sdtemp_dev_table[i].sdtemp_resolution;
aprint_naive(": Temp Sensor\n");
aprint_normal(": %s Temp Sensor\n", sdtemp_dev_table[i].sdtemp_desc);
if (sdtemp_dev_table[i].sdtemp_mfg_id == 0)
aprint_debug_dev(self,
"mfg 0x%04x dev 0x%02x rev 0x%02x at addr 0x%02x\n",
mfgid, devid >> 8, devid & 0xff, ia->ia_addr);
/*
* Alarm capability is required; if not present, this is likely
* not a real sdtemp device.
*/
error = sdtemp_read_16(sc, SDTEMP_REG_CAPABILITY, &sc->sc_capability);
if (error != 0 || (sc->sc_capability & SDTEMP_CAP_HAS_ALARM) == 0) {
iic_release_bus(sc->sc_tag, 0);
aprint_error_dev(self,
"required alarm capability not present!\n");
return;
}
/* Set the configuration to defaults. */
error = sdtemp_write_16(sc, SDTEMP_REG_CONFIG, 0);
if (error != 0) {
iic_release_bus(sc->sc_tag, 0);
aprint_error_dev(self, "error %d writing config register\n",
error);
return;
}
/* If variable resolution, set to max */
if (sc->sc_resolution < 0) {
sc->sc_resolution = ~sc->sc_resolution;
error = sdtemp_write_16(sc, SDTEMP_REG_RESOLUTION,
sc->sc_resolution & 0x3);
if (error != 0) {
iic_release_bus(sc->sc_tag, 0);
aprint_error_dev(self,
"error %d writing resolution register\n", error);
return;
} else
sc->sc_resolution++;
}
iic_release_bus(sc->sc_tag, 0);
/* Hook us into the sysmon_envsys subsystem */
sc->sc_sme = sysmon_envsys_create();
sc->sc_sme->sme_name = device_xname(self);
sc->sc_sme->sme_cookie = sc;
sc->sc_sme->sme_refresh = sdtemp_refresh;
sc->sc_sme->sme_get_limits = sdtemp_get_limits;
sc->sc_sme->sme_set_limits = sdtemp_set_limits;
sc->sc_sensor = kmem_zalloc(sizeof(envsys_data_t), KM_NOSLEEP);
if (!sc->sc_sensor) {
aprint_error_dev(self, "unable to allocate sc_sensor\n");
goto bad2;
}
/* Initialize sensor data. */
sc->sc_sensor->units = ENVSYS_STEMP;
sc->sc_sensor->state = ENVSYS_SINVALID;
sc->sc_sensor->flags |= ENVSYS_FMONLIMITS;
(void)strlcpy(sc->sc_sensor->desc, device_xname(self),
sizeof(sc->sc_sensor->desc));
snprintf(sc->sc_sensor->desc, sizeof(sc->sc_sensor->desc),
"DIMM %d temperature", sc->sc_address - SDTEMP_ADDR);
/* Now attach the sensor */
if (sysmon_envsys_sensor_attach(sc->sc_sme, sc->sc_sensor)) {
aprint_error_dev(self, "unable to attach sensor\n");
goto bad;
}
/* Register the device */
error = sysmon_envsys_register(sc->sc_sme);
if (error) {
aprint_error_dev(self, "error %d registering with sysmon\n",
error);
goto bad;
}
if (!pmf_device_register(self, sdtemp_pmf_suspend, sdtemp_pmf_resume))
aprint_error_dev(self, "couldn't establish power handler\n");
/* Retrieve and display hardware monitor limits */
sdtemp_get_limits(sc->sc_sme, sc->sc_sensor, &sc->sc_deflims,
&sc->sc_defprops);
aprint_normal_dev(self, "Hardware limits: ");
i = 0;
if (sc->sc_defprops & PROP_WARNMIN) {
aprint_normal("low %dC",
__UK2C(sc->sc_deflims.sel_warnmin));
i++;
}
if (sc->sc_defprops & PROP_WARNMAX) {
aprint_normal("%shigh %dC ", (i)?", ":"",
__UK2C(sc->sc_deflims.sel_warnmax));
i++;
}
if (sc->sc_defprops & PROP_CRITMAX) {
aprint_normal("%scritical %dC ", (i)?", ":"",
__UK2C(sc->sc_deflims.sel_critmax));
i++;
}
aprint_normal("%s\n", (i)?"":"none set");
return;
bad:
kmem_free(sc->sc_sensor, sizeof(envsys_data_t));
bad2:
sysmon_envsys_destroy(sc->sc_sme);
}
static int
sdtemp_detach(device_t self, int flags)
{
struct sdtemp_softc *sc = device_private(self);
pmf_device_deregister(self);
if (sc->sc_sme)
sysmon_envsys_unregister(sc->sc_sme);
if (sc->sc_sensor)
kmem_free(sc->sc_sensor, sizeof(envsys_data_t));
return 0;
}
/* Retrieve current limits from device, and encode in uKelvins */
static void
sdtemp_get_limits(struct sysmon_envsys *sme, envsys_data_t *edata,
sysmon_envsys_lim_t *limits, uint32_t *props)
{
struct sdtemp_softc *sc = sme->sme_cookie;
uint16_t lim;
*props = 0;
iic_acquire_bus(sc->sc_tag, 0);
if (sdtemp_read_16(sc, SDTEMP_REG_LOWER_LIM, &lim) == 0 && lim != 0) {
limits->sel_warnmin = sdtemp_decode_temp(sc, lim);
*props |= PROP_WARNMIN;
}
if (sdtemp_read_16(sc, SDTEMP_REG_UPPER_LIM, &lim) == 0 && lim != 0) {
limits->sel_warnmax = sdtemp_decode_temp(sc, lim);
*props |= PROP_WARNMAX;
}
if (sdtemp_read_16(sc, SDTEMP_REG_CRIT_LIM, &lim) == 0 && lim != 0) {
limits->sel_critmax = sdtemp_decode_temp(sc, lim);
*props |= PROP_CRITMAX;
}
iic_release_bus(sc->sc_tag, 0);
if (*props != 0)
*props |= PROP_DRIVER_LIMITS;
}
/* Send current limit values to the device */
static void
sdtemp_set_limits(struct sysmon_envsys *sme, envsys_data_t *edata,
sysmon_envsys_lim_t *limits, uint32_t *props)
{
uint16_t val;
struct sdtemp_softc *sc = sme->sme_cookie;
if (limits == NULL) {
limits = &sc->sc_deflims;
props = &sc->sc_defprops;
}
iic_acquire_bus(sc->sc_tag, 0);
if (*props & PROP_WARNMIN) {
val = __UK2C(limits->sel_warnmin);
(void)sdtemp_write_16(sc, SDTEMP_REG_LOWER_LIM,
(val << 4) & SDTEMP_TEMP_MASK);
}
if (*props & PROP_WARNMAX) {
val = __UK2C(limits->sel_warnmax);
(void)sdtemp_write_16(sc, SDTEMP_REG_UPPER_LIM,
(val << 4) & SDTEMP_TEMP_MASK);
}
if (*props & PROP_CRITMAX) {
val = __UK2C(limits->sel_critmax);
(void)sdtemp_write_16(sc, SDTEMP_REG_CRIT_LIM,
(val << 4) & SDTEMP_TEMP_MASK);
}
iic_release_bus(sc->sc_tag, 0);
/*
* If at least one limit is set that we can handle, and no
* limits are set that we cannot handle, tell sysmon that
* the driver will take care of monitoring the limits!
*/
if (*props & (PROP_CRITMIN | PROP_BATTCAP | PROP_BATTWARN))
*props &= ~PROP_DRIVER_LIMITS;
else if (*props & PROP_LIMITS)
*props |= PROP_DRIVER_LIMITS;
else
*props &= ~PROP_DRIVER_LIMITS;
}
#ifdef NOT_YET /* All registers on these sensors are 16-bits */
/* Read a 8-bit value from a register */
static int
sdtemp_read_8(struct sdtemp_softc *sc, uint8_t reg, uint8_t *valp)
{
int error;
error = iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_address, ®, 1, valp, sizeof(*valp), 0);
return error;
}
static int
sdtemp_write_8(struct sdtemp_softc *sc, uint8_t reg, uint8_t val)
{
return iic_exec(sc->sc_tag, I2C_OP_WRITE_WITH_STOP,
sc->sc_address, ®, 1, &val, sizeof(val), 0);
}
#endif /* NOT_YET */
/* Read a 16-bit value from a register */
static int
sdtemp_read_16(struct sdtemp_softc *sc, uint8_t reg, uint16_t *valp)
{
int error;
error = iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_address, ®, 1, valp, sizeof(*valp), 0);
if (error)
return error;
*valp = be16toh(*valp);
return 0;
}
static int
sdtemp_write_16(struct sdtemp_softc *sc, uint8_t reg, uint16_t val)
{
uint16_t temp;
temp = htobe16(val);
return iic_exec(sc->sc_tag, I2C_OP_WRITE_WITH_STOP,
sc->sc_address, ®, 1, &temp, sizeof(temp), 0);
}
static uint32_t
sdtemp_decode_temp(struct sdtemp_softc *sc, uint16_t temp)
{
uint32_t val;
int32_t stemp;
/* Get only the temperature bits */
temp &= SDTEMP_TEMP_MASK;
/* If necessary, extend the sign bit */
if ((sc->sc_capability & SDTEMP_CAP_WIDER_RANGE) &&
(temp & SDTEMP_TEMP_NEGATIVE))
temp |= SDTEMP_TEMP_SIGN_EXT;
/* Mask off only bits valid within current resolution */
temp &= ~(0xf >> sc->sc_resolution);
/* Treat as signed and extend to 32-bits */
stemp = (int16_t)temp;
/* Now convert from 0.0625 (1/16) deg C increments to microKelvins */
val = (stemp * 62500) + 273150000;
return val;
}
static void
sdtemp_refresh(struct sysmon_envsys *sme, envsys_data_t *edata)
{
struct sdtemp_softc *sc = sme->sme_cookie;
uint16_t val;
int error;
iic_acquire_bus(sc->sc_tag, 0);
error = sdtemp_read_16(sc, SDTEMP_REG_AMBIENT_TEMP, &val);
iic_release_bus(sc->sc_tag, 0);
if (error) {
edata->state = ENVSYS_SINVALID;
return;
}
edata->value_cur = sdtemp_decode_temp(sc, val);
/* Now check for limits */
if ((edata->upropset & PROP_DRIVER_LIMITS) == 0)
edata->state = ENVSYS_SVALID;
else if ((val & SDTEMP_ABOVE_CRIT) &&
(edata->upropset & PROP_CRITMAX))
edata->state = ENVSYS_SCRITOVER;
else if ((val & SDTEMP_ABOVE_UPPER) &&
(edata->upropset & PROP_WARNMAX))
edata->state = ENVSYS_SWARNOVER;
else if ((val & SDTEMP_BELOW_LOWER) &&
(edata->upropset & PROP_WARNMIN))
edata->state = ENVSYS_SWARNUNDER;
else
edata->state = ENVSYS_SVALID;
}
/*
* power management functions
*
* We go into "shutdown" mode at suspend time, and return to normal
* mode upon resume. This reduces power consumption by disabling
* the A/D converter.
*/
static bool
sdtemp_pmf_suspend(device_t dev, const pmf_qual_t *qual)
{
struct sdtemp_softc *sc = device_private(dev);
int error;
uint16_t config;
iic_acquire_bus(sc->sc_tag, 0);
error = sdtemp_read_16(sc, SDTEMP_REG_CONFIG, &config);
if (error == 0) {
config |= SDTEMP_CONFIG_SHUTDOWN_MODE;
error = sdtemp_write_16(sc, SDTEMP_REG_CONFIG, config);
}
iic_release_bus(sc->sc_tag, 0);
return (error == 0);
}
static bool
sdtemp_pmf_resume(device_t dev, const pmf_qual_t *qual)
{
struct sdtemp_softc *sc = device_private(dev);
int error;
uint16_t config;
iic_acquire_bus(sc->sc_tag, 0);
error = sdtemp_read_16(sc, SDTEMP_REG_CONFIG, &config);
if (error == 0) {
config &= ~SDTEMP_CONFIG_SHUTDOWN_MODE;
error = sdtemp_write_16(sc, SDTEMP_REG_CONFIG, config);
}
iic_release_bus(sc->sc_tag, 0);
return (error == 0);
}
MODULE(MODULE_CLASS_DRIVER, sdtemp, "iic");
#ifdef _MODULE
#include "ioconf.c"
#endif
static int
sdtemp_modcmd(modcmd_t cmd, void *opaque)
{
int error = 0;
switch (cmd) {
case MODULE_CMD_INIT:
#ifdef _MODULE
error = config_init_component(cfdriver_ioconf_sdtemp,
cfattach_ioconf_sdtemp, cfdata_ioconf_sdtemp);
#endif
return error;
case MODULE_CMD_FINI:
#ifdef _MODULE
error = config_fini_component(cfdriver_ioconf_sdtemp,
cfattach_ioconf_sdtemp, cfdata_ioconf_sdtemp);
#endif
return error;
default:
return ENOTTY;
}
}
|