1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2012 Andreas Tobler
5 * Copyright (c) 2014 Justin Hibbits
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
24 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 #include <sys/param.h>
32 #include <sys/bus.h>
33 #include <sys/systm.h>
34 #include <sys/module.h>
35 #include <sys/callout.h>
36 #include <sys/conf.h>
37 #include <sys/cpu.h>
38 #include <sys/ctype.h>
39 #include <sys/kernel.h>
40 #include <sys/reboot.h>
41 #include <sys/rman.h>
42 #include <sys/sysctl.h>
43 #include <sys/limits.h>
44
45 #include <machine/bus.h>
46 #include <machine/md_var.h>
47
48 #include <dev/iicbus/iicbus.h>
49 #include <dev/iicbus/iiconf.h>
50
51 #include <dev/ofw/openfirm.h>
52 #include <dev/ofw/ofw_bus.h>
53 #include <powerpc/powermac/powermac_thermal.h>
54
55 /* ADT746X registers. */
56 #define ADT746X_TACH1LOW 0x28
57 #define ADT746X_TACH1HIGH 0x29
58 #define ADT746X_TACH2LOW 0x2a
59 #define ADT746X_TACH2HIGH 0x2b
60 #define ADT746X_PWM1 0x30
61 #define ADT746X_PWM2 0x31
62 #define ADT746X_DEVICE_ID 0x3d
63 #define ADT746X_COMPANY_ID 0x3e
64 #define ADT746X_REV_ID 0x3f
65 #define ADT746X_CONFIG 0x40
66 #define ADT746X_PWM1_CONF 0x5c
67 #define ADT746X_PWM2_CONF 0x5d
68 #define ADT746X_MANUAL_MASK 0xe0
69
70 #define ADT7460_DEV_ID 0x27
71 #define ADT7467_DEV_ID 0x68
72
73 struct adt746x_fan {
74 struct pmac_fan fan;
75 device_t dev;
76 int id;
77 int setpoint;
78 int pwm_reg;
79 int conf_reg;
80 };
81
82 struct adt746x_sensor {
83 struct pmac_therm therm;
84 device_t dev;
85 int id;
86 cell_t reg;
87 enum {
88 ADT746X_SENSOR_TEMP,
89 ADT746X_SENSOR_VOLT,
90 ADT746X_SENSOR_SPEED
91 } type;
92 };
93
94 struct adt746x_softc {
95 device_t sc_dev;
96 struct intr_config_hook enum_hook;
97 uint32_t sc_addr;
98 /* The 7467 supports up to 4 fans, 2 voltage and 3 temperature sensors. */
99 struct adt746x_fan sc_fans[4];
100 int sc_nfans;
101 struct adt746x_sensor sc_sensors[9];
102 int sc_nsensors;
103 int device_id;
104
105 };
106
107
108 /* Regular bus attachment functions */
109
110 static int adt746x_probe(device_t);
111 static int adt746x_attach(device_t);
112
113
114 /* Utility functions */
115 static void adt746x_attach_fans(device_t dev);
116 static void adt746x_attach_sensors(device_t dev);
117 static int adt746x_fill_fan_prop(device_t dev);
118 static int adt746x_fill_sensor_prop(device_t dev);
119
120 static int adt746x_fan_set_pwm(struct adt746x_fan *fan, int pwm);
121 static int adt746x_fan_get_pwm(struct adt746x_fan *fan);
122 static int adt746x_sensor_read(struct adt746x_sensor *sens);
123 static void adt746x_start(void *xdev);
124
125 /* i2c read/write functions. */
126 static int adt746x_write(device_t dev, uint32_t addr, uint8_t reg,
127 uint8_t *buf);
128 static int adt746x_read(device_t dev, uint32_t addr, uint8_t reg,
129 uint8_t *data);
130
131 static device_method_t adt746x_methods[] = {
132 /* Device interface */
133 DEVMETHOD(device_probe, adt746x_probe),
134 DEVMETHOD(device_attach, adt746x_attach),
135 { 0, 0 },
136 };
137
138 static driver_t adt746x_driver = {
139 "adt746x",
140 adt746x_methods,
141 sizeof(struct adt746x_softc)
142 };
143
144 static devclass_t adt746x_devclass;
145
146 DRIVER_MODULE(adt746x, iicbus, adt746x_driver, adt746x_devclass, 0, 0);
147 static MALLOC_DEFINE(M_ADT746X, "adt746x", "ADT Sensor Information");
148
149
150 /* i2c read/write functions. */
151
152 static int
adt746x_write(device_t dev,uint32_t addr,uint8_t reg,uint8_t * buff)153 adt746x_write(device_t dev, uint32_t addr, uint8_t reg, uint8_t *buff)
154 {
155 uint8_t buf[4];
156 int try = 0;
157
158 struct iic_msg msg[] = {
159 {addr, IIC_M_WR, 2, buf }
160 };
161
162 /* Prepare the write msg. */
163 buf[0] = reg;
164 memcpy(buf + 1, buff, 1);
165
166 for (;;)
167 {
168 if (iicbus_transfer(dev, msg, 1) == 0)
169 return (0);
170 if (++try > 5) {
171 device_printf(dev, "iicbus write failed\n");
172 return (-1);
173 }
174 pause("adt746x_write", hz);
175 }
176 return (0);
177 }
178
179 static int
adt746x_read(device_t dev,uint32_t addr,uint8_t reg,uint8_t * data)180 adt746x_read(device_t dev, uint32_t addr, uint8_t reg, uint8_t *data)
181 {
182 uint8_t buf[4];
183 int err, try = 0;
184
185 struct iic_msg msg[2] = {
186 {addr, IIC_M_WR | IIC_M_NOSTOP, 1, ®},
187 {addr, IIC_M_RD, 1, buf},
188 };
189
190 for (;;)
191 {
192 err = iicbus_transfer(dev, msg, 2);
193 if (err != 0)
194 goto retry;
195
196 *data = *((uint8_t*)buf);
197 return (0);
198 retry:
199 if (++try > 5) {
200 device_printf(dev, "iicbus read failed\n");
201 return (-1);
202 }
203 pause("adt746x_read", hz);
204 }
205 }
206
207 static int
adt746x_probe(device_t dev)208 adt746x_probe(device_t dev)
209 {
210 const char *name, *compatible;
211 struct adt746x_softc *sc;
212
213 name = ofw_bus_get_name(dev);
214 compatible = ofw_bus_get_compat(dev);
215
216 if (!name)
217 return (ENXIO);
218
219 if (strcmp(name, "fan") != 0 ||
220 (strcmp(compatible, "adt7460") != 0 &&
221 strcmp(compatible, "adt7467") != 0))
222 return (ENXIO);
223
224 sc = device_get_softc(dev);
225 sc->sc_dev = dev;
226 sc->sc_addr = iicbus_get_addr(dev);
227
228 device_set_desc(dev, "Apple Thermostat Unit ADT746X");
229
230 return (0);
231 }
232
233 static int
adt746x_attach(device_t dev)234 adt746x_attach(device_t dev)
235 {
236 struct adt746x_softc *sc;
237
238 sc = device_get_softc(dev);
239
240 sc->enum_hook.ich_func = adt746x_start;
241 sc->enum_hook.ich_arg = dev;
242
243 /* We have to wait until interrupts are enabled. I2C read and write
244 * only works if the interrupts are available.
245 * The unin/i2c is controlled by the htpic on unin. But this is not
246 * the master. The openpic on mac-io is controlling the htpic.
247 * This one gets attached after the mac-io probing and then the
248 * interrupts will be available.
249 */
250
251 if (config_intrhook_establish(&sc->enum_hook) != 0)
252 return (ENOMEM);
253
254 return (0);
255 }
256
257 static void
adt746x_start(void * xdev)258 adt746x_start(void *xdev)
259 {
260 uint8_t did, cid, rev, conf;
261
262 struct adt746x_softc *sc;
263
264 device_t dev = (device_t)xdev;
265
266 sc = device_get_softc(dev);
267
268 adt746x_read(sc->sc_dev, sc->sc_addr, ADT746X_DEVICE_ID, &did);
269 adt746x_read(sc->sc_dev, sc->sc_addr, ADT746X_COMPANY_ID, &cid);
270 adt746x_read(sc->sc_dev, sc->sc_addr, ADT746X_REV_ID, &rev);
271 adt746x_read(sc->sc_dev, sc->sc_addr, ADT746X_CONFIG, &conf);
272
273 device_printf(dev, "Dev ID %#x, Company ID %#x, Rev ID %#x CNF: %#x\n",
274 did, cid, rev, conf);
275
276 /* We can get the device id either from 'of' properties or from the chip
277 itself. This method makes sure we can read the chip, otherwise
278 we return. */
279
280 sc->device_id = did;
281
282 conf = 1;
283 /* Start the ADT7460. */
284 if (sc->device_id == ADT7460_DEV_ID)
285 adt746x_write(sc->sc_dev, sc->sc_addr, ADT746X_CONFIG, &conf);
286
287 /* Detect and attach child devices. */
288 adt746x_attach_fans(dev);
289 adt746x_attach_sensors(dev);
290 config_intrhook_disestablish(&sc->enum_hook);
291 }
292
293 /*
294 * Sensor and fan management
295 */
296 static int
adt746x_fan_set_pwm(struct adt746x_fan * fan,int pwm)297 adt746x_fan_set_pwm(struct adt746x_fan *fan, int pwm)
298 {
299 uint8_t reg = 0, manual, mode = 0;
300 struct adt746x_softc *sc;
301 uint8_t buf;
302
303 sc = device_get_softc(fan->dev);
304
305 /* Clamp to allowed range */
306 pwm = max(fan->fan.min_rpm, pwm);
307 pwm = min(fan->fan.max_rpm, pwm);
308
309 reg = fan->pwm_reg;
310 mode = fan->conf_reg;
311
312 /* From the 7460 datasheet:
313 PWM dutycycle can be programmed from 0% (0x00) to 100% (0xFF)
314 in steps of 0.39% (256 steps).
315 */
316 buf = (pwm * 100 / 39) - (pwm ? 1 : 0);
317 fan->setpoint = buf;
318
319 /* Manual mode. */
320 adt746x_read(sc->sc_dev, sc->sc_addr, mode, &manual);
321 manual |= ADT746X_MANUAL_MASK;
322 adt746x_write(sc->sc_dev, sc->sc_addr, mode, &manual);
323
324 /* Write speed. */
325 adt746x_write(sc->sc_dev, sc->sc_addr, reg, &buf);
326
327 return (0);
328 }
329
330 static int
adt746x_fan_get_pwm(struct adt746x_fan * fan)331 adt746x_fan_get_pwm(struct adt746x_fan *fan)
332 {
333 uint8_t buf, reg;
334 uint16_t pwm;
335 struct adt746x_softc *sc;
336
337 sc = device_get_softc(fan->dev);
338
339 reg = fan->pwm_reg;
340
341 adt746x_read(sc->sc_dev, sc->sc_addr, reg, &buf);
342
343 pwm = (buf * 39 / 100) + (buf ? 1 : 0);
344 return (pwm);
345 }
346
347 static int
adt746x_fill_fan_prop(device_t dev)348 adt746x_fill_fan_prop(device_t dev)
349 {
350 phandle_t child;
351 struct adt746x_softc *sc;
352 u_int *id;
353 char *location;
354 int i, id_len, len = 0, location_len, prev_len = 0;
355
356 sc = device_get_softc(dev);
357
358 child = ofw_bus_get_node(dev);
359
360 /* Fill the fan location property. */
361 location_len = OF_getprop_alloc(child, "hwctrl-location", (void **)&location);
362 id_len = OF_getprop_alloc_multi(child, "hwctrl-id", sizeof(cell_t), (void **)&id);
363 if (location_len == -1 || id_len == -1) {
364 OF_prop_free(location);
365 OF_prop_free(id);
366 return 0;
367 }
368
369 /* Fill in all the properties for each fan. */
370 for (i = 0; i < id_len; i++) {
371 strlcpy(sc->sc_fans[i].fan.name, location + len, 32);
372 prev_len = strlen(location + len) + 1;
373 len += prev_len;
374 sc->sc_fans[i].id = id[i];
375 if (id[i] == 6) {
376 sc->sc_fans[i].pwm_reg = ADT746X_PWM1;
377 sc->sc_fans[i].conf_reg = ADT746X_PWM1_CONF;
378 } else if (id[i] == 7) {
379 sc->sc_fans[i].pwm_reg = ADT746X_PWM2;
380 sc->sc_fans[i].conf_reg = ADT746X_PWM2_CONF;
381 } else {
382 sc->sc_fans[i].pwm_reg = ADT746X_PWM1 + i;
383 sc->sc_fans[i].conf_reg = ADT746X_PWM1_CONF + i;
384 }
385 sc->sc_fans[i].dev = sc->sc_dev;
386 sc->sc_fans[i].fan.min_rpm = 5; /* Percent */
387 sc->sc_fans[i].fan.max_rpm = 100;
388 sc->sc_fans[i].fan.read = NULL;
389 sc->sc_fans[i].fan.set =
390 (int (*)(struct pmac_fan *, int))(adt746x_fan_set_pwm);
391 sc->sc_fans[i].fan.default_rpm = sc->sc_fans[i].fan.max_rpm;
392 }
393 OF_prop_free(location);
394 OF_prop_free(id);
395
396 return (i);
397 }
398
399 static int
adt746x_fill_sensor_prop(device_t dev)400 adt746x_fill_sensor_prop(device_t dev)
401 {
402 phandle_t child, node;
403 struct adt746x_softc *sc;
404 char sens_type[32];
405 int i = 0, reg, sensid;
406
407 sc = device_get_softc(dev);
408
409 child = ofw_bus_get_node(dev);
410
411 /* Fill in the sensor properties for each child. */
412 for (node = OF_child(child); node != 0; node = OF_peer(node)) {
413 if (OF_getprop(node, "sensor-id", &sensid, sizeof(sensid)) == -1)
414 continue;
415 OF_getprop(node, "location", sc->sc_sensors[i].therm.name, 32);
416 OF_getprop(node, "device_type", sens_type, sizeof(sens_type));
417 if (strcmp(sens_type, "temperature") == 0)
418 sc->sc_sensors[i].type = ADT746X_SENSOR_TEMP;
419 else if (strcmp(sens_type, "voltage") == 0)
420 sc->sc_sensors[i].type = ADT746X_SENSOR_VOLT;
421 else
422 sc->sc_sensors[i].type = ADT746X_SENSOR_SPEED;
423 OF_getprop(node, "reg", ®, sizeof(reg));
424 OF_getprop(node, "sensor-id", &sensid,
425 sizeof(sensid));
426 /* This is the i2c register of the sensor. */
427 sc->sc_sensors[i].reg = reg;
428 sc->sc_sensors[i].id = sensid;
429 OF_getprop(node, "zone", &sc->sc_sensors[i].therm.zone,
430 sizeof(sc->sc_sensors[i].therm.zone));
431 sc->sc_sensors[i].dev = dev;
432 sc->sc_sensors[i].therm.read =
433 (int (*)(struct pmac_therm *))adt746x_sensor_read;
434 if (sc->sc_sensors[i].type == ADT746X_SENSOR_TEMP) {
435 /* Make up some ranges */
436 sc->sc_sensors[i].therm.target_temp = 500 + ZERO_C_TO_K;
437 sc->sc_sensors[i].therm.max_temp = 800 + ZERO_C_TO_K;
438
439 pmac_thermal_sensor_register(&sc->sc_sensors[i].therm);
440 }
441 i++;
442 }
443
444 return (i);
445 }
446
447 static int
adt746x_fanrpm_sysctl(SYSCTL_HANDLER_ARGS)448 adt746x_fanrpm_sysctl(SYSCTL_HANDLER_ARGS)
449 {
450 device_t adt;
451 struct adt746x_softc *sc;
452 struct adt746x_fan *fan;
453 int pwm = 0, error;
454
455 adt = arg1;
456 sc = device_get_softc(adt);
457 fan = &sc->sc_fans[arg2];
458 pwm = adt746x_fan_get_pwm(fan);
459 error = sysctl_handle_int(oidp, &pwm, 0, req);
460
461 if (error || !req->newptr)
462 return (error);
463
464 return (adt746x_fan_set_pwm(fan, pwm));
465 }
466
467 static void
adt746x_attach_fans(device_t dev)468 adt746x_attach_fans(device_t dev)
469 {
470 struct adt746x_softc *sc;
471 struct sysctl_oid *oid, *fanroot_oid;
472 struct sysctl_ctx_list *ctx;
473 phandle_t child;
474 char sysctl_name[32];
475 int i, j;
476
477 sc = device_get_softc(dev);
478
479 sc->sc_nfans = 0;
480
481 child = ofw_bus_get_node(dev);
482
483 /* Count the actual number of fans. */
484 sc->sc_nfans = adt746x_fill_fan_prop(dev);
485
486 device_printf(dev, "%d fans detected!\n", sc->sc_nfans);
487
488 if (sc->sc_nfans == 0) {
489 device_printf(dev, "WARNING: No fans detected!\n");
490 return;
491 }
492
493 ctx = device_get_sysctl_ctx(dev);
494 fanroot_oid = SYSCTL_ADD_NODE(ctx,
495 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "fans",
496 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "ADT Fan Information");
497
498 /* Now we can fill the properties into the allocated struct. */
499 sc->sc_nfans = adt746x_fill_fan_prop(dev);
500
501 /* Register fans with pmac_thermal */
502 for (i = 0; i < sc->sc_nfans; i++)
503 pmac_thermal_fan_register(&sc->sc_fans[i].fan);
504
505 /* Add sysctls for the fans. */
506 for (i = 0; i < sc->sc_nfans; i++) {
507 for (j = 0; j < strlen(sc->sc_fans[i].fan.name); j++) {
508 sysctl_name[j] = tolower(sc->sc_fans[i].fan.name[j]);
509 if (isspace(sysctl_name[j]))
510 sysctl_name[j] = '_';
511 }
512 sysctl_name[j] = 0;
513
514 sc->sc_fans[i].setpoint =
515 adt746x_fan_get_pwm(&sc->sc_fans[i]);
516
517 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(fanroot_oid),
518 OID_AUTO, sysctl_name, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
519 "Fan Information");
520
521 /* I use i to pass the fan id. */
522 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
523 "pwm", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, dev,
524 i, adt746x_fanrpm_sysctl, "I", "Fan PWM in %");
525 }
526
527 /* Dump fan location & type. */
528 if (bootverbose) {
529 for (i = 0; i < sc->sc_nfans; i++) {
530 device_printf(dev, "Fan location: %s",
531 sc->sc_fans[i].fan.name);
532 device_printf(dev, " id: %d RPM: %d\n",
533 sc->sc_fans[i].id,
534 sc->sc_fans[i].setpoint);
535 }
536 }
537 }
538
539 static int
adt746x_sensor_read(struct adt746x_sensor * sens)540 adt746x_sensor_read(struct adt746x_sensor *sens)
541 {
542 struct adt746x_softc *sc;
543 int tmp = 0;
544 uint16_t val;
545 uint8_t data[1], data1[1];
546 int8_t temp;
547
548 sc = device_get_softc(sens->dev);
549 if (sens->type != ADT746X_SENSOR_SPEED) {
550 if (adt746x_read(sc->sc_dev, sc->sc_addr, sens->reg,
551 &temp) < 0)
552 return (-1);
553 if (sens->type == ADT746X_SENSOR_TEMP)
554 tmp = 10 * temp + ZERO_C_TO_K;
555 else
556 tmp = temp;
557 } else {
558 if (adt746x_read(sc->sc_dev, sc->sc_addr, sens->reg,
559 data) < 0)
560 return (-1);
561 if (adt746x_read(sc->sc_dev, sc->sc_addr, sens->reg + 1,
562 data1) < 0)
563 return (-1);
564 val = data[0] + (data1[0] << 8);
565 /* A value of 0xffff means the fan is stopped. */
566 if (val == 0 || val == 0xffff)
567 tmp = 0;
568 else
569 tmp = (90000 * 60) / val;
570 }
571 return (tmp);
572 }
573
574 static int
adt746x_sensor_sysctl(SYSCTL_HANDLER_ARGS)575 adt746x_sensor_sysctl(SYSCTL_HANDLER_ARGS)
576 {
577 device_t dev;
578 struct adt746x_softc *sc;
579 struct adt746x_sensor *sens;
580 int value, error;
581
582 dev = arg1;
583 sc = device_get_softc(dev);
584 sens = &sc->sc_sensors[arg2];
585
586 value = sens->therm.read(&sens->therm);
587 if (value < 0)
588 return (ENXIO);
589
590 error = sysctl_handle_int(oidp, &value, 0, req);
591
592 return (error);
593 }
594
595 static void
adt746x_attach_sensors(device_t dev)596 adt746x_attach_sensors(device_t dev)
597 {
598 struct adt746x_softc *sc;
599 struct sysctl_oid *oid, *sensroot_oid;
600 struct sysctl_ctx_list *ctx;
601 phandle_t child;
602 char sysctl_name[40];
603 const char *unit;
604 const char *desc;
605 int i, j;
606
607
608 sc = device_get_softc(dev);
609 sc->sc_nsensors = 0;
610 child = ofw_bus_get_node(dev);
611
612 /* Count the actual number of sensors. */
613 sc->sc_nsensors = adt746x_fill_sensor_prop(dev);
614 device_printf(dev, "%d sensors detected!\n", sc->sc_nsensors);
615 if (sc->sc_nsensors == 0) {
616 device_printf(dev, "WARNING: No sensors detected!\n");
617 return;
618 }
619
620 ctx = device_get_sysctl_ctx(dev);
621 sensroot_oid = SYSCTL_ADD_NODE(ctx,
622 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "sensors",
623 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "ADT Sensor Information");
624
625 /* Add the sysctl for the sensors. */
626 for (i = 0; i < sc->sc_nsensors; i++) {
627 for (j = 0; j < strlen(sc->sc_sensors[i].therm.name); j++) {
628 sysctl_name[j] = tolower(sc->sc_sensors[i].therm.name[j]);
629 if (isspace(sysctl_name[j]))
630 sysctl_name[j] = '_';
631 }
632 sysctl_name[j] = 0;
633 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(sensroot_oid),
634 OID_AUTO, sysctl_name, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
635 "Sensor Information");
636 if (sc->sc_sensors[i].type == ADT746X_SENSOR_TEMP) {
637 unit = "temp";
638 desc = "sensor unit (C)";
639 } else if (sc->sc_sensors[i].type == ADT746X_SENSOR_VOLT) {
640 unit = "volt";
641 desc = "sensor unit (mV)";
642 } else {
643 unit = "rpm";
644 desc = "sensor unit (RPM)";
645 }
646 /* I use i to pass the sensor id. */
647 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
648 unit, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT, dev, i,
649 adt746x_sensor_sysctl,
650 sc->sc_sensors[i].type == ADT746X_SENSOR_TEMP ?
651 "IK" : "I", desc);
652 }
653
654 /* Dump sensor location & type. */
655 if (bootverbose) {
656 for (i = 0; i < sc->sc_nsensors; i++) {
657 device_printf(dev, "Sensor location: %s",
658 sc->sc_sensors[i].therm.name);
659 device_printf(dev, " type: %d id: %d reg: 0x%x\n",
660 sc->sc_sensors[i].type,
661 sc->sc_sensors[i].id,
662 sc->sc_sensors[i].reg);
663 }
664 }
665 }
666