summaryrefslogtreecommitdiff
path: root/sys/dev/usb/ugold.c
blob: fb5cf286ac3cc0e690dc3458a1cb5adea191e707 (plain)
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
/*	$OpenBSD: ugold.c,v 1.11 2016/01/08 15:54:14 jcs Exp $   */

/*
 * Copyright (c) 2013 Takayoshi SASANO <uaa@openbsd.org>
 * Copyright (c) 2013 Martin Pieuchot <mpi@openbsd.org>
 * Copyright (c) 2015 Joerg Jung <jung@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/*
 * Driver for Microdia's HID base TEMPer and TEMPerHUM temperature and
 * humidity sensors
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <sys/sensors.h>

#include <dev/usb/usb.h>
#include <dev/usb/usbhid.h>

#include <dev/usb/usbdi.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/uhidev.h>

#include <dev/hid/hid.h>

#define UGOLD_INNER		0
#define UGOLD_OUTER		1
#define UGOLD_HUM		1
#define UGOLD_MAX_SENSORS	2

#define UGOLD_CMD_DATA		0x80
#define UGOLD_CMD_INIT		0x82

#define UGOLD_TYPE_SI7005	1
#define UGOLD_TYPE_SI7006	2

/*
 * This driver uses three known commands for the TEMPer and TEMPerHUM
 * devices.
 *
 * The first byte of the answer corresponds to the command and the
 * second one seems to be the size (in bytes) of the answer.
 *
 * The device always sends 8 bytes and if the length of the answer
 * is less than that, it just leaves the last bytes untouched.  That
 * is why most of the time the last n bytes of the answers are the
 * same.
 *
 * The type command below seems to generate two answers with a
 * string corresponding to the device, for example:
 *	'TEMPer1F' and '1.1Per1F' (here Per1F is repeated).
 */
static uint8_t cmd_data[8] = { 0x01, 0x80, 0x33, 0x01, 0x00, 0x00, 0x00, 0x00 };
static uint8_t cmd_init[8] = { 0x01, 0x82, 0x77, 0x01, 0x00, 0x00, 0x00, 0x00 };
static uint8_t cmd_type[8] = { 0x01, 0x86, 0xff, 0x01, 0x00, 0x00, 0x00, 0x00 };

struct ugold_softc {
	struct uhidev		 sc_hdev;
	struct usbd_device	*sc_udev;

	int			 sc_num_sensors;
	int			 sc_type;

	struct ksensor		 sc_sensor[UGOLD_MAX_SENSORS];
	struct ksensordev	 sc_sensordev;
	struct sensor_task	*sc_sensortask;
};

const struct usb_devno ugold_devs[] = {
	{ USB_VENDOR_MICRODIA, USB_PRODUCT_MICRODIA_TEMPER },
	{ USB_VENDOR_MICRODIA, USB_PRODUCT_MICRODIA_TEMPERHUM },
};

int 	ugold_match(struct device *, void *, void *);
void	ugold_attach(struct device *, struct device *, void *);
int 	ugold_detach(struct device *, int);

void	ugold_ds75_intr(struct uhidev *, void *, u_int);
void	ugold_si700x_intr(struct uhidev *, void *, u_int);
void	ugold_refresh(void *);

int	ugold_issue_cmd(struct ugold_softc *, uint8_t *, int);

struct cfdriver ugold_cd = {
	NULL, "ugold", DV_DULL
};

const struct cfattach ugold_ca = {
	sizeof(struct ugold_softc), ugold_match, ugold_attach, ugold_detach,
};

int
ugold_match(struct device *parent, void *match, void *aux)
{
	struct uhidev_attach_arg *uha = aux;
	int size;
	void *desc;

	if (uha->reportid == UHIDEV_CLAIM_ALLREPORTID)
		return (UMATCH_NONE);

	if (usb_lookup(ugold_devs, uha->uaa->vendor, uha->uaa->product) == NULL)
		return (UMATCH_NONE);

	/*
	 * XXX Only match the sensor interface.
	 *
	 * Does it makes sense to attach various uhidev(4) to these
	 * non-standard HID devices?
	 */
	uhidev_get_report_desc(uha->parent, &desc, &size);
	if (hid_is_collection(desc, size, uha->reportid,
	    HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_KEYBOARD)))
		return (UMATCH_NONE);

	return (UMATCH_VENDOR_PRODUCT);

}

void
ugold_attach(struct device *parent, struct device *self, void *aux)
{
	struct ugold_softc *sc = (struct ugold_softc *)self;
	struct uhidev_attach_arg *uha = aux;
	int size, repid;
	void *desc;

	sc->sc_udev = uha->parent->sc_udev;
	sc->sc_hdev.sc_parent = uha->parent;
	sc->sc_hdev.sc_report_id = uha->reportid;
	switch (uha->uaa->product) {
	case USB_PRODUCT_MICRODIA_TEMPER:
		sc->sc_hdev.sc_intr = ugold_ds75_intr;
		break;
	case USB_PRODUCT_MICRODIA_TEMPERHUM:
		sc->sc_hdev.sc_intr = ugold_si700x_intr;
		break;
	default:
		printf(", unknown product\n");
		return;
	}

	uhidev_get_report_desc(uha->parent, &desc, &size);
	repid = uha->reportid;
	sc->sc_hdev.sc_isize = hid_report_size(desc, size, hid_input, repid);
	sc->sc_hdev.sc_osize = hid_report_size(desc, size, hid_output, repid);
	sc->sc_hdev.sc_fsize = hid_report_size(desc, size, hid_feature, repid);

	if (uhidev_open(&sc->sc_hdev)) {
		printf(", unable to open interrupt pipe\n");
		return;
	}

	strlcpy(sc->sc_sensordev.xname, sc->sc_hdev.sc_dev.dv_xname,
	    sizeof(sc->sc_sensordev.xname));

	switch (uha->uaa->product) {
	case USB_PRODUCT_MICRODIA_TEMPER:
		/* 2 temperature sensors */
		sc->sc_sensor[UGOLD_INNER].type = SENSOR_TEMP;
		strlcpy(sc->sc_sensor[UGOLD_INNER].desc, "inner",
		    sizeof(sc->sc_sensor[UGOLD_INNER].desc));
		sc->sc_sensor[UGOLD_OUTER].type = SENSOR_TEMP;
		strlcpy(sc->sc_sensor[UGOLD_OUTER].desc, "outer",
		    sizeof(sc->sc_sensor[UGOLD_OUTER].desc));
		break;
	case USB_PRODUCT_MICRODIA_TEMPERHUM:
		/* 1 temperature and 1 humidity sensor */
		sc->sc_sensor[UGOLD_INNER].type = SENSOR_TEMP;
		strlcpy(sc->sc_sensor[UGOLD_INNER].desc, "inner",
		    sizeof(sc->sc_sensor[UGOLD_INNER].desc));
		sc->sc_sensor[UGOLD_HUM].type = SENSOR_HUMIDITY;
		strlcpy(sc->sc_sensor[UGOLD_HUM].desc, "RH",
		    sizeof(sc->sc_sensor[UGOLD_HUM].desc));
		break;
	default:
		printf(", unknown product\n");
		return;
	}

	/* 0.1Hz */
	sc->sc_sensortask = sensor_task_register(sc, ugold_refresh, 6);
	if (sc->sc_sensortask == NULL) {
		printf(", unable to register update task\n");
		return;
	}
	printf("\n");

	sensordev_install(&sc->sc_sensordev);
}

int
ugold_detach(struct device *self, int flags)
{
	struct ugold_softc *sc = (struct ugold_softc *)self;
	int i;

	if (sc->sc_sensortask != NULL) {
		sensor_task_unregister(sc->sc_sensortask);
		sensordev_deinstall(&sc->sc_sensordev);
	}

	for (i = 0; i < sc->sc_num_sensors; i++)
		sensor_detach(&sc->sc_sensordev, &sc->sc_sensor[i]);

	if (sc->sc_hdev.sc_state & UHIDEV_OPEN)
		uhidev_close(&sc->sc_hdev);

	return (0);
}

static int
ugold_ds75_temp(uint8_t msb, uint8_t lsb)
{
	/* DS75 12bit precision mode: 0.0625 degrees Celsius ticks */
	return (((msb * 100) + ((lsb >> 4) * 25 / 4)) * 10000) + 273150000;
}

static void
ugold_ds75_type(struct ugold_softc *sc, uint8_t *buf, u_int len)
{
	if (memcmp(buf, "TEMPer1F", len) == 0 ||
	    memcmp(buf, "TEMPer2F", len) == 0 ||
	    memcmp(buf, "TEMPerF1", len) == 0)
		return; /* skip first half of the answer */

	printf("%s: %d sensor%s type ds75/12bit (temperature)\n",
	    sc->sc_hdev.sc_dev.dv_xname, sc->sc_num_sensors,
	    (sc->sc_num_sensors == 1) ? "" : "s");

	sc->sc_type = -1; /* ignore type */
}

void
ugold_ds75_intr(struct uhidev *addr, void *ibuf, u_int len)
{
	struct ugold_softc *sc = (struct ugold_softc *)addr;
	uint8_t *buf = ibuf;
	int i, temp;

	switch (buf[0]) {
	case UGOLD_CMD_INIT:
		if (sc->sc_num_sensors)
			break;

		sc->sc_num_sensors = min(buf[1], UGOLD_MAX_SENSORS) /* XXX */;

		for (i = 0; i < sc->sc_num_sensors; i++) {
			sc->sc_sensor[i].flags |= SENSOR_FINVALID;
			sensor_attach(&sc->sc_sensordev, &sc->sc_sensor[i]);
		}

		break;
	case UGOLD_CMD_DATA:
		switch (buf[1]) {
		case 4:
			temp = ugold_ds75_temp(buf[4], buf[5]);
			sc->sc_sensor[UGOLD_OUTER].value = temp;
			sc->sc_sensor[UGOLD_OUTER].flags &= ~SENSOR_FINVALID;
			/* FALLTHROUGH */
		case 2:
			temp = ugold_ds75_temp(buf[2], buf[3]);
			sc->sc_sensor[UGOLD_INNER].value = temp;
			sc->sc_sensor[UGOLD_INNER].flags &= ~SENSOR_FINVALID;
			break;
		default:
			printf("%s: invalid data length (%d bytes)\n",
				sc->sc_hdev.sc_dev.dv_xname, buf[1]);
		}
		break;
	default:
		if (!sc->sc_type) { /* type command returns arbitrary string */
			ugold_ds75_type(sc, buf, len);
			break;
		}
		printf("%s: unknown command 0x%02x\n",
		    sc->sc_hdev.sc_dev.dv_xname, buf[0]);
	}
}

static int
ugold_si700x_temp(int type, uint8_t msb, uint8_t lsb)
{
	int temp = msb * 256 + lsb;

	switch (type) { /* convert to mdegC */
	case UGOLD_TYPE_SI7005: /* 14bit 32 codes per degC 0x0000 = -50 degC */
		temp = (((temp & 0x3fff) * 1000) / 32) - 50000;
		break;
	case UGOLD_TYPE_SI7006: /* 14bit and status bit */
		temp = (((temp & ~3) * 21965) / 8192) - 46850;
		break;
	default:
		temp = 0;
	}
	return temp;
}

static int
ugold_si700x_rhum(int type, uint8_t msb, uint8_t lsb, int temp)
{
	int rhum = msb * 256 + lsb;

	switch (type) { /* convert to m%RH */
	case UGOLD_TYPE_SI7005: /* 12bit 16 codes per %RH 0x0000 = -24 %RH */
		rhum = (((rhum & 0x0fff) * 1000) / 16) - 24000;
#if 0		/* todo: linearization and temperature compensation */
		rhum -= -0.00393 * rhum * rhum + 0.4008 * rhum - 4.7844;
		rhum += (temp - 30) * (0.00237 * rhum + 0.1973);
#endif
		break;
	case UGOLD_TYPE_SI7006: /* 14bit and status bit */
		rhum = (((rhum & ~3) * 15625) / 8192) - 6000;
		break;
	default:
		rhum = 0;
	}

	/* limit the humidity to valid values */
	if (rhum < 0)
		rhum = 0;
	else if (rhum > 100000)
		rhum = 100000;
	return rhum;
}

static void
ugold_si700x_type(struct ugold_softc *sc, uint8_t *buf, u_int len)
{
	if (memcmp(buf, "TEMPerHu", len) == 0)
		return; /* skip equal first half of the answer */

	printf("%s: %d sensor%s type ", sc->sc_hdev.sc_dev.dv_xname,
	    sc->sc_num_sensors, (sc->sc_num_sensors == 1) ? "" : "s");

	if (memcmp(buf, "mM12V1.0", len) == 0) {
		sc->sc_type = UGOLD_TYPE_SI7005;
		printf("si7005 (temperature and humidity)\n");
	} else if (memcmp(buf, "mM12V1.2", len) == 0) {
		sc->sc_type = UGOLD_TYPE_SI7006;
		printf("si7006 (temperature and humidity)\n");
	} else {
		sc->sc_type = -1;
		printf("unknown\n");
	}
}

void
ugold_si700x_intr(struct uhidev *addr, void *ibuf, u_int len)
{
	struct ugold_softc *sc = (struct ugold_softc *)addr;
	uint8_t *buf = ibuf;
	int i, temp, rhum;

	switch (buf[0]) {
	case UGOLD_CMD_INIT:
		if (sc->sc_num_sensors)
			break;

		sc->sc_num_sensors = min(buf[1], UGOLD_MAX_SENSORS) /* XXX */;

		for (i = 0; i < sc->sc_num_sensors; i++) {
			sc->sc_sensor[i].flags |= SENSOR_FINVALID;
			sensor_attach(&sc->sc_sensordev, &sc->sc_sensor[i]);
		}
		break;
	case UGOLD_CMD_DATA:
		if (buf[1] != 4)
			printf("%s: invalid data length (%d bytes)\n",
			    sc->sc_hdev.sc_dev.dv_xname, buf[1]);
		temp = ugold_si700x_temp(sc->sc_type, buf[2], buf[3]);
		sc->sc_sensor[UGOLD_INNER].value = (temp * 1000) + 273150000;
		sc->sc_sensor[UGOLD_INNER].flags &= ~SENSOR_FINVALID;
		rhum = ugold_si700x_rhum(sc->sc_type, buf[4], buf[5], temp);
		sc->sc_sensor[UGOLD_HUM].value = rhum;
		sc->sc_sensor[UGOLD_HUM].flags &= ~SENSOR_FINVALID;
		break;
	default:
		if (!sc->sc_type) { /* type command returns arbitrary string */
			ugold_si700x_type(sc, buf, len);
			break;
		}
		printf("%s: unknown command 0x%02x\n",
		    sc->sc_hdev.sc_dev.dv_xname, buf[0]);
	}
}

void
ugold_refresh(void *arg)
{
	struct ugold_softc *sc = arg;
	int i;

	if (!sc->sc_num_sensors) {
		ugold_issue_cmd(sc, cmd_init, sizeof(cmd_init));
		return;
	}
	if (!sc->sc_type) {
		ugold_issue_cmd(sc, cmd_type, sizeof(cmd_type));
		return;
	}

	if (ugold_issue_cmd(sc, cmd_data, sizeof(cmd_data))) {
		for (i = 0; i < sc->sc_num_sensors; i++)
			sc->sc_sensor[i].flags |= SENSOR_FINVALID;
	}
}

int
ugold_issue_cmd(struct ugold_softc *sc, uint8_t *cmd, int len)
{
	int actlen;

	actlen = uhidev_set_report_async(sc->sc_hdev.sc_parent,
	    UHID_OUTPUT_REPORT, sc->sc_hdev.sc_report_id, cmd, len);
	return (actlen != len);
}