summaryrefslogtreecommitdiffstats
path: root/drivers/iio/pressure/icp10100.c
blob: 2086f3ef338fefb6519c92b59d461beff15ef596 (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
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
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (C) 2020 InvenSense, Inc.
 *
 * Driver for InvenSense ICP-1010xx barometric pressure and temperature sensor.
 *
 * Datasheet:
 * http://www.invensense.com/wp-content/uploads/2018/01/DS-000186-ICP-101xx-v1.2.pdf
 */

#include <linux/device.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/i2c.h>
#include <linux/pm_runtime.h>
#include <linux/crc8.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#include <linux/log2.h>
#include <linux/math64.h>
#include <linux/regulator/consumer.h>
#include <linux/iio/iio.h>

#define ICP10100_ID_REG_GET(_reg)	((_reg) & 0x003F)
#define ICP10100_ID_REG			0x08
#define ICP10100_RESPONSE_WORD_LENGTH	3
#define ICP10100_CRC8_WORD_LENGTH	2
#define ICP10100_CRC8_POLYNOMIAL	0x31
#define ICP10100_CRC8_INIT		0xFF

enum icp10100_mode {
	ICP10100_MODE_LP,	/* Low power mode: 1x sampling */
	ICP10100_MODE_N,	/* Normal mode: 2x sampling */
	ICP10100_MODE_LN,	/* Low noise mode: 4x sampling */
	ICP10100_MODE_ULN,	/* Ultra low noise mode: 8x sampling */
	ICP10100_MODE_NB,
};

struct icp10100_state {
	struct mutex lock;
	struct i2c_client *client;
	struct regulator *vdd;
	enum icp10100_mode mode;
	int16_t cal[4];
};

struct icp10100_command {
	__be16 cmd;
	unsigned long wait_us;
	unsigned long wait_max_us;
	size_t response_word_nb;
};

static const struct icp10100_command icp10100_cmd_soft_reset = {
	.cmd = cpu_to_be16(0x805D),
	.wait_us = 170,
	.wait_max_us = 200,
	.response_word_nb = 0,
};

static const struct icp10100_command icp10100_cmd_read_id = {
	.cmd = cpu_to_be16(0xEFC8),
	.wait_us = 0,
	.response_word_nb = 1,
};

static const struct icp10100_command icp10100_cmd_read_otp = {
	.cmd = cpu_to_be16(0xC7F7),
	.wait_us = 0,
	.response_word_nb = 1,
};

static const struct icp10100_command icp10100_cmd_measure[] = {
	[ICP10100_MODE_LP] = {
		.cmd = cpu_to_be16(0x401A),
		.wait_us = 1800,
		.wait_max_us = 2000,
		.response_word_nb = 3,
	},
	[ICP10100_MODE_N] = {
		.cmd = cpu_to_be16(0x48A3),
		.wait_us = 6300,
		.wait_max_us = 6500,
		.response_word_nb = 3,
	},
	[ICP10100_MODE_LN] = {
		.cmd = cpu_to_be16(0x5059),
		.wait_us = 23800,
		.wait_max_us = 24000,
		.response_word_nb = 3,
	},
	[ICP10100_MODE_ULN] = {
		.cmd = cpu_to_be16(0x58E0),
		.wait_us = 94500,
		.wait_max_us = 94700,
		.response_word_nb = 3,
	},
};

static const uint8_t icp10100_switch_mode_otp[] =
	{0xC5, 0x95, 0x00, 0x66, 0x9c};

DECLARE_CRC8_TABLE(icp10100_crc8_table);

static inline int icp10100_i2c_xfer(struct i2c_adapter *adap,
				    struct i2c_msg *msgs, int num)
{
	int ret;

	ret = i2c_transfer(adap, msgs, num);
	if (ret < 0)
		return ret;

	if (ret != num)
		return -EIO;

	return 0;
}

static int icp10100_send_cmd(struct icp10100_state *st,
			     const struct icp10100_command *cmd,
			     __be16 *buf, size_t buf_len)
{
	size_t size = cmd->response_word_nb * ICP10100_RESPONSE_WORD_LENGTH;
	uint8_t data[16];
	uint8_t *ptr;
	uint8_t *buf_ptr = (uint8_t *)buf;
	struct i2c_msg msgs[2] = {
		{
			.addr = st->client->addr,
			.flags = 0,
			.len = 2,
			.buf = (uint8_t *)&cmd->cmd,
		}, {
			.addr = st->client->addr,
			.flags = I2C_M_RD,
			.len = size,
			.buf = data,
		},
	};
	uint8_t crc;
	unsigned int i;
	int ret;

	if (size > sizeof(data))
		return -EINVAL;

	if (cmd->response_word_nb > 0 &&
			(buf == NULL || buf_len < (cmd->response_word_nb * 2)))
		return -EINVAL;

	dev_dbg(&st->client->dev, "sending cmd %#x\n", be16_to_cpu(cmd->cmd));

	if (cmd->response_word_nb > 0 && cmd->wait_us == 0) {
		/* direct command-response without waiting */
		ret = icp10100_i2c_xfer(st->client->adapter, msgs,
					ARRAY_SIZE(msgs));
		if (ret)
			return ret;
	} else {
		/* transfer command write */
		ret = icp10100_i2c_xfer(st->client->adapter, &msgs[0], 1);
		if (ret)
			return ret;
		if (cmd->wait_us > 0)
			usleep_range(cmd->wait_us, cmd->wait_max_us);
		/* transfer response read if needed */
		if (cmd->response_word_nb > 0) {
			ret = icp10100_i2c_xfer(st->client->adapter, &msgs[1], 1);
			if (ret)
				return ret;
		} else {
			return 0;
		}
	}

	/* process read words with crc checking */
	for (i = 0; i < cmd->response_word_nb; ++i) {
		ptr = &data[i * ICP10100_RESPONSE_WORD_LENGTH];
		crc = crc8(icp10100_crc8_table, ptr, ICP10100_CRC8_WORD_LENGTH,
			   ICP10100_CRC8_INIT);
		if (crc != ptr[ICP10100_CRC8_WORD_LENGTH]) {
			dev_err(&st->client->dev, "crc error recv=%#x calc=%#x\n",
				ptr[ICP10100_CRC8_WORD_LENGTH], crc);
			return -EIO;
		}
		*buf_ptr++ = ptr[0];
		*buf_ptr++ = ptr[1];
	}

	return 0;
}

static int icp10100_read_cal_otp(struct icp10100_state *st)
{
	__be16 val;
	int i;
	int ret;

	/* switch into OTP read mode */
	ret = i2c_master_send(st->client, icp10100_switch_mode_otp,
			      ARRAY_SIZE(icp10100_switch_mode_otp));
	if (ret < 0)
		return ret;
	if (ret != ARRAY_SIZE(icp10100_switch_mode_otp))
		return -EIO;

	/* read 4 calibration values */
	for (i = 0; i < 4; ++i) {
		ret = icp10100_send_cmd(st, &icp10100_cmd_read_otp,
					&val, sizeof(val));
		if (ret)
			return ret;
		st->cal[i] = be16_to_cpu(val);
		dev_dbg(&st->client->dev, "cal[%d] = %d\n", i, st->cal[i]);
	}

	return 0;
}

static int icp10100_init_chip(struct icp10100_state *st)
{
	__be16 val;
	uint16_t id;
	int ret;

	/* read and check id */
	ret = icp10100_send_cmd(st, &icp10100_cmd_read_id, &val, sizeof(val));
	if (ret)
		return ret;
	id = ICP10100_ID_REG_GET(be16_to_cpu(val));
	if (id != ICP10100_ID_REG) {
		dev_err(&st->client->dev, "invalid id %#x\n", id);
		return -ENODEV;
	}

	/* read calibration data from OTP */
	ret = icp10100_read_cal_otp(st);
	if (ret)
		return ret;

	/* reset chip */
	return icp10100_send_cmd(st, &icp10100_cmd_soft_reset, NULL, 0);
}

static int icp10100_get_measures(struct icp10100_state *st,
				uint32_t *pressure, uint16_t *temperature)
{
	const struct icp10100_command *cmd;
	__be16 measures[3];
	int ret;

	ret = pm_runtime_resume_and_get(&st->client->dev);
	if (ret < 0)
		return ret;

	mutex_lock(&st->lock);
	cmd = &icp10100_cmd_measure[st->mode];
	ret = icp10100_send_cmd(st, cmd, measures, sizeof(measures));
	mutex_unlock(&st->lock);
	if (ret)
		goto error_measure;

	*pressure = (be16_to_cpu(measures[0]) << 8) |
			(be16_to_cpu(measures[1]) >> 8);
	*temperature = be16_to_cpu(measures[2]);

	pm_runtime_mark_last_busy(&st->client->dev);
error_measure:
	pm_runtime_put_autosuspend(&st->client->dev);
	return ret;
}

static uint32_t icp10100_get_pressure(struct icp10100_state *st,
				      uint32_t raw_pressure, uint16_t raw_temp)
{
	static int32_t p_calib[] = {45000, 80000, 105000};
	static int32_t lut_lower = 3670016;
	static int32_t lut_upper = 12058624;
	static int32_t inv_quadr_factor = 16777216;
	static int32_t offset_factor = 2048;
	int64_t val1, val2;
	int32_t p_lut[3];
	int32_t t, t_square;
	int64_t a, b, c;
	uint32_t pressure_mPa;

	dev_dbg(&st->client->dev, "raw: pressure = %u, temp = %u\n",
		raw_pressure, raw_temp);

	/* compute p_lut values */
	t = (int32_t)raw_temp - 32768;
	t_square = t * t;
	val1 = (int64_t)st->cal[0] * (int64_t)t_square;
	p_lut[0] = lut_lower + (int32_t)div_s64(val1, inv_quadr_factor);
	val1 = (int64_t)st->cal[1] * (int64_t)t_square;
	p_lut[1] = offset_factor * st->cal[3] +
			(int32_t)div_s64(val1, inv_quadr_factor);
	val1 = (int64_t)st->cal[2] * (int64_t)t_square;
	p_lut[2] = lut_upper + (int32_t)div_s64(val1, inv_quadr_factor);
	dev_dbg(&st->client->dev, "p_lut = [%d, %d, %d]\n",
		p_lut[0], p_lut[1], p_lut[2]);

	/* compute a, b, c factors */
	val1 = (int64_t)p_lut[0] * (int64_t)p_lut[1] *
			(int64_t)(p_calib[0] - p_calib[1]) +
		(int64_t)p_lut[1] * (int64_t)p_lut[2] *
			(int64_t)(p_calib[1] - p_calib[2]) +
		(int64_t)p_lut[2] * (int64_t)p_lut[0] *
			(int64_t)(p_calib[2] - p_calib[0]);
	val2 = (int64_t)p_lut[2] * (int64_t)(p_calib[0] - p_calib[1]) +
		(int64_t)p_lut[0] * (int64_t)(p_calib[1] - p_calib[2]) +
		(int64_t)p_lut[1] * (int64_t)(p_calib[2] - p_calib[0]);
	c = div64_s64(val1, val2);
	dev_dbg(&st->client->dev, "val1 = %lld, val2 = %lld, c = %lld\n",
		val1, val2, c);
	val1 = (int64_t)p_calib[0] * (int64_t)p_lut[0] -
		(int64_t)p_calib[1] * (int64_t)p_lut[1] -
		(int64_t)(p_calib[1] - p_calib[0]) * c;
	val2 = (int64_t)p_lut[0] - (int64_t)p_lut[1];
	a = div64_s64(val1, val2);
	dev_dbg(&st->client->dev, "val1 = %lld, val2 = %lld, a = %lld\n",
		val1, val2, a);
	b = ((int64_t)p_calib[0] - a) * ((int64_t)p_lut[0] + c);
	dev_dbg(&st->client->dev, "b = %lld\n", b);

	/*
	 * pressure_Pa = a + (b / (c + raw_pressure))
	 * pressure_mPa = 1000 * pressure_Pa
	 */
	pressure_mPa = 1000LL * a + div64_s64(1000LL * b, c + raw_pressure);

	return pressure_mPa;
}

static int icp10100_read_raw_measures(struct iio_dev *indio_dev,
				      struct iio_chan_spec const *chan,
				      int *val, int *val2)
{
	struct icp10100_state *st = iio_priv(indio_dev);
	uint32_t raw_pressure;
	uint16_t raw_temp;
	uint32_t pressure_mPa;
	int ret;

	ret = iio_device_claim_direct_mode(indio_dev);
	if (ret)
		return ret;

	ret = icp10100_get_measures(st, &raw_pressure, &raw_temp);
	if (ret)
		goto error_release;

	switch (chan->type) {
	case IIO_PRESSURE:
		pressure_mPa = icp10100_get_pressure(st, raw_pressure,
						     raw_temp);
		/* mPa to kPa */
		*val = pressure_mPa / 1000000;
		*val2 = pressure_mPa % 1000000;
		ret = IIO_VAL_INT_PLUS_MICRO;
		break;
	case IIO_TEMP:
		*val = raw_temp;
		ret = IIO_VAL_INT;
		break;
	default:
		ret = -EINVAL;
		break;
	}

error_release:
	iio_device_release_direct_mode(indio_dev);
	return ret;
}

static int icp10100_read_raw(struct iio_dev *indio_dev,
			     struct iio_chan_spec const *chan,
			     int *val, int *val2, long mask)
{
	struct icp10100_state *st = iio_priv(indio_dev);

	switch (mask) {
	case IIO_CHAN_INFO_RAW:
	case IIO_CHAN_INFO_PROCESSED:
		return icp10100_read_raw_measures(indio_dev, chan, val, val2);
	case IIO_CHAN_INFO_SCALE:
		switch (chan->type) {
		case IIO_TEMP:
			/* 1000 * 175°C / 65536 in m°C */
			*val = 2;
			*val2 = 670288;
			return IIO_VAL_INT_PLUS_MICRO;
		default:
			return -EINVAL;
		}
		break;
	case IIO_CHAN_INFO_OFFSET:
		switch (chan->type) {
		case IIO_TEMP:
			/* 1000 * -45°C in m°C */
			*val = -45000;
			return IIO_VAL_INT;
		default:
			return -EINVAL;
		}
		break;
	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
		mutex_lock(&st->lock);
		*val = 1 << st->mode;
		mutex_unlock(&st->lock);
		return IIO_VAL_INT;
	default:
		return -EINVAL;
	}
}

static int icp10100_read_avail(struct iio_dev *indio_dev,
			       struct iio_chan_spec const *chan,
			       const int **vals, int *type, int *length,
			       long mask)
{
	static int oversamplings[] = {1, 2, 4, 8};

	switch (mask) {
	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
		*vals = oversamplings;
		*type = IIO_VAL_INT;
		*length = ARRAY_SIZE(oversamplings);
		return IIO_AVAIL_LIST;
	default:
		return -EINVAL;
	}
}

static int icp10100_write_raw(struct iio_dev *indio_dev,
			      struct iio_chan_spec const *chan,
			      int val, int val2, long mask)
{
	struct icp10100_state *st = iio_priv(indio_dev);
	unsigned int mode;
	int ret;

	switch (mask) {
	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
		/* oversampling is always positive and a power of 2 */
		if (val <= 0 || !is_power_of_2(val))
			return -EINVAL;
		mode = ilog2(val);
		if (mode >= ICP10100_MODE_NB)
			return -EINVAL;
		ret = iio_device_claim_direct_mode(indio_dev);
		if (ret)
			return ret;
		mutex_lock(&st->lock);
		st->mode = mode;
		mutex_unlock(&st->lock);
		iio_device_release_direct_mode(indio_dev);
		return 0;
	default:
		return -EINVAL;
	}
}

static int icp10100_write_raw_get_fmt(struct iio_dev *indio_dev,
				      struct iio_chan_spec const *chan,
				      long mask)
{
	switch (mask) {
	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
		return IIO_VAL_INT;
	default:
		return -EINVAL;
	}
}

static const struct iio_info icp10100_info = {
	.read_raw = icp10100_read_raw,
	.read_avail = icp10100_read_avail,
	.write_raw = icp10100_write_raw,
	.write_raw_get_fmt = icp10100_write_raw_get_fmt,
};

static const struct iio_chan_spec icp10100_channels[] = {
	{
		.type = IIO_PRESSURE,
		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
		.info_mask_shared_by_all =
			BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
		.info_mask_shared_by_all_available =
			BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
	}, {
		.type = IIO_TEMP,
		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
			BIT(IIO_CHAN_INFO_SCALE) |
			BIT(IIO_CHAN_INFO_OFFSET),
		.info_mask_shared_by_all =
			BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
		.info_mask_shared_by_all_available =
			BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
	},
};

static int icp10100_enable_regulator(struct icp10100_state *st)
{
	int ret;

	ret = regulator_enable(st->vdd);
	if (ret)
		return ret;
	msleep(100);

	return 0;
}

static void icp10100_disable_regulator_action(void *data)
{
	struct icp10100_state *st = data;
	int ret;

	ret = regulator_disable(st->vdd);
	if (ret)
		dev_err(&st->client->dev, "error %d disabling vdd\n", ret);
}

static void icp10100_pm_disable(void *data)
{
	struct device *dev = data;

	pm_runtime_disable(dev);
}

static int icp10100_probe(struct i2c_client *client)
{
	struct iio_dev *indio_dev;
	struct icp10100_state *st;
	int ret;

	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
		dev_err(&client->dev, "plain i2c transactions not supported\n");
		return -ENODEV;
	}

	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*st));
	if (!indio_dev)
		return -ENOMEM;

	i2c_set_clientdata(client, indio_dev);
	indio_dev->name = client->name;
	indio_dev->modes = INDIO_DIRECT_MODE;
	indio_dev->channels = icp10100_channels;
	indio_dev->num_channels = ARRAY_SIZE(icp10100_channels);
	indio_dev->info = &icp10100_info;

	st = iio_priv(indio_dev);
	mutex_init(&st->lock);
	st->client = client;
	st->mode = ICP10100_MODE_N;

	st->vdd = devm_regulator_get(&client->dev, "vdd");
	if (IS_ERR(st->vdd))
		return PTR_ERR(st->vdd);

	ret = icp10100_enable_regulator(st);
	if (ret)
		return ret;

	ret = devm_add_action_or_reset(&client->dev,
				       icp10100_disable_regulator_action, st);
	if (ret)
		return ret;

	/* has to be done before the first i2c communication */
	crc8_populate_msb(icp10100_crc8_table, ICP10100_CRC8_POLYNOMIAL);

	ret = icp10100_init_chip(st);
	if (ret) {
		dev_err(&client->dev, "init chip error %d\n", ret);
		return ret;
	}

	/* enable runtime pm with autosuspend delay of 2s */
	pm_runtime_get_noresume(&client->dev);
	pm_runtime_set_active(&client->dev);
	pm_runtime_enable(&client->dev);
	pm_runtime_set_autosuspend_delay(&client->dev, 2000);
	pm_runtime_use_autosuspend(&client->dev);
	pm_runtime_put(&client->dev);
	ret = devm_add_action_or_reset(&client->dev, icp10100_pm_disable,
				       &client->dev);
	if (ret)
		return ret;

	return devm_iio_device_register(&client->dev, indio_dev);
}

static int icp10100_suspend(struct device *dev)
{
	struct icp10100_state *st = iio_priv(dev_get_drvdata(dev));
	int ret;

	mutex_lock(&st->lock);
	ret = regulator_disable(st->vdd);
	mutex_unlock(&st->lock);

	return ret;
}

static int icp10100_resume(struct device *dev)
{
	struct icp10100_state *st = iio_priv(dev_get_drvdata(dev));
	int ret;

	mutex_lock(&st->lock);

	ret = icp10100_enable_regulator(st);
	if (ret)
		goto out_unlock;

	/* reset chip */
	ret = icp10100_send_cmd(st, &icp10100_cmd_soft_reset, NULL, 0);

out_unlock:
	mutex_unlock(&st->lock);
	return ret;
}

static DEFINE_RUNTIME_DEV_PM_OPS(icp10100_pm, icp10100_suspend, icp10100_resume,
				 NULL);

static const struct of_device_id icp10100_of_match[] = {
	{
		.compatible = "invensense,icp10100",
	},
	{ }
};
MODULE_DEVICE_TABLE(of, icp10100_of_match);

static const struct i2c_device_id icp10100_id[] = {
	{ "icp10100", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, icp10100_id);

static struct i2c_driver icp10100_driver = {
	.driver = {
		.name = "icp10100",
		.pm = pm_ptr(&icp10100_pm),
		.of_match_table = icp10100_of_match,
	},
	.probe = icp10100_probe,
	.id_table = icp10100_id,
};
module_i2c_driver(icp10100_driver);

MODULE_AUTHOR("InvenSense, Inc.");
MODULE_DESCRIPTION("InvenSense icp10100 driver");
MODULE_LICENSE("GPL");