2 * bma180.c - IIO driver for Bosch BMA180 triaxial acceleration sensor
4 * Copyright 2013 Oleksandr Kravchenko <x0199363@ti.com>
6 * Support for BMA250 (c) Peter Meerwald <pmeerw@pmeerw.net>
8 * This file is subject to the terms and conditions of version 2 of
9 * the GNU General Public License. See the file COPYING in the main
10 * directory of this archive for more details.
12 * SPI is not supported by driver
13 * BMA180: 7-bit I2C slave address 0x40 or 0x41
14 * BMA250: 7-bit I2C slave address 0x18 or 0x19
17 #include <linux/module.h>
18 #include <linux/i2c.h>
19 #include <linux/interrupt.h>
20 #include <linux/delay.h>
21 #include <linux/of_device.h>
23 #include <linux/bitops.h>
24 #include <linux/slab.h>
25 #include <linux/string.h>
26 #include <linux/iio/iio.h>
27 #include <linux/iio/sysfs.h>
28 #include <linux/iio/buffer.h>
29 #include <linux/iio/trigger.h>
30 #include <linux/iio/trigger_consumer.h>
31 #include <linux/iio/triggered_buffer.h>
33 #define BMA180_DRV_NAME "bma180"
34 #define BMA180_IRQ_NAME "bma180_event"
43 struct bma180_part_info {
44 const struct iio_chan_spec *channels;
45 unsigned int num_channels;
46 const int *scale_table;
47 unsigned int num_scales;
51 u8 int_reset_reg, int_reset_mask;
52 u8 sleep_reg, sleep_mask;
53 u8 bw_reg, bw_mask, bw_offset;
54 u8 scale_reg, scale_mask;
55 u8 power_reg, power_mask, lowpower_val;
56 u8 int_enable_reg, int_enable_mask;
59 int (*chip_config)(struct bma180_data *data);
60 void (*chip_disable)(struct bma180_data *data);
64 #define BMA180_CHIP_ID 0x00 /* Need to distinguish BMA180 from other */
65 #define BMA180_ACC_X_LSB 0x02 /* First of 6 registers of accel data */
66 #define BMA180_TEMP 0x08
67 #define BMA180_CTRL_REG0 0x0d
68 #define BMA180_RESET 0x10
69 #define BMA180_BW_TCS 0x20
70 #define BMA180_CTRL_REG3 0x21
71 #define BMA180_TCO_Z 0x30
72 #define BMA180_OFFSET_LSB1 0x35
74 /* BMA180_CTRL_REG0 bits */
75 #define BMA180_DIS_WAKE_UP BIT(0) /* Disable wake up mode */
76 #define BMA180_SLEEP BIT(1) /* 1 - chip will sleep */
77 #define BMA180_EE_W BIT(4) /* Unlock writing to addr from 0x20 */
78 #define BMA180_RESET_INT BIT(6) /* Reset pending interrupts */
80 /* BMA180_CTRL_REG3 bits */
81 #define BMA180_NEW_DATA_INT BIT(1) /* Intr every new accel data is ready */
83 /* BMA180_OFFSET_LSB1 skipping mode bit */
84 #define BMA180_SMP_SKIP BIT(0)
86 /* Bit masks for registers bit fields */
87 #define BMA180_RANGE 0x0e /* Range of measured accel values */
88 #define BMA180_BW 0xf0 /* Accel bandwidth */
89 #define BMA180_MODE_CONFIG 0x03 /* Config operation modes */
91 /* We have to write this value in reset register to do soft reset */
92 #define BMA180_RESET_VAL 0xb6
94 #define BMA180_ID_REG_VAL 0x03
96 /* Chip power modes */
97 #define BMA180_LOW_POWER 0x03
99 #define BMA250_RANGE_REG 0x0f
100 #define BMA250_BW_REG 0x10
101 #define BMA250_POWER_REG 0x11
102 #define BMA250_RESET_REG 0x14
103 #define BMA250_INT_ENABLE_REG 0x17
104 #define BMA250_INT_MAP_REG 0x1a
105 #define BMA250_INT_RESET_REG 0x21
107 #define BMA250_RANGE_MASK GENMASK(3, 0) /* Range of accel values */
108 #define BMA250_BW_MASK GENMASK(4, 0) /* Accel bandwidth */
109 #define BMA250_BW_OFFSET 8
110 #define BMA250_SUSPEND_MASK BIT(7) /* chip will sleep */
111 #define BMA250_LOWPOWER_MASK BIT(6)
112 #define BMA250_DATA_INTEN_MASK BIT(4)
113 #define BMA250_INT1_DATA_MASK BIT(0)
114 #define BMA250_INT_RESET_MASK BIT(7) /* Reset pending interrupts */
117 struct i2c_client *client;
118 struct iio_trigger *trig;
119 const struct bma180_part_info *part_info;
125 /* Ensure timestamp is naturally aligned */
128 s64 timestamp __aligned(8);
139 static int bma180_bw_table[] = { 10, 20, 40, 75, 150, 300 }; /* Hz */
140 static int bma180_scale_table[] = { 1275, 1863, 2452, 3727, 4903, 9709, 19417 };
142 static int bma250_bw_table[] = { 8, 16, 31, 63, 125, 250 }; /* Hz */
143 static int bma250_scale_table[] = { 0, 0, 0, 38344, 0, 76590, 0, 0, 153180, 0,
146 static int bma180_get_data_reg(struct bma180_data *data, enum bma180_chan chan)
150 if (data->sleep_state)
155 ret = i2c_smbus_read_byte_data(data->client, BMA180_TEMP);
157 dev_err(&data->client->dev, "failed to read temp register\n");
160 ret = i2c_smbus_read_word_data(data->client,
161 BMA180_ACC_X_LSB + chan * 2);
163 dev_err(&data->client->dev,
164 "failed to read accel_%c register\n",
171 static int bma180_set_bits(struct bma180_data *data, u8 reg, u8 mask, u8 val)
173 int ret = i2c_smbus_read_byte_data(data->client, reg);
174 u8 reg_val = (ret & ~mask) | (val << (ffs(mask) - 1));
179 return i2c_smbus_write_byte_data(data->client, reg, reg_val);
182 static int bma180_reset_intr(struct bma180_data *data)
184 int ret = bma180_set_bits(data, data->part_info->int_reset_reg,
185 data->part_info->int_reset_mask, 1);
188 dev_err(&data->client->dev, "failed to reset interrupt\n");
193 static int bma180_set_new_data_intr_state(struct bma180_data *data, bool state)
195 int ret = bma180_set_bits(data, data->part_info->int_enable_reg,
196 data->part_info->int_enable_mask, state);
199 ret = bma180_reset_intr(data);
206 dev_err(&data->client->dev,
207 "failed to set new data interrupt state %d\n", state);
211 static int bma180_set_sleep_state(struct bma180_data *data, bool state)
213 int ret = bma180_set_bits(data, data->part_info->sleep_reg,
214 data->part_info->sleep_mask, state);
217 dev_err(&data->client->dev,
218 "failed to set sleep state %d\n", state);
221 data->sleep_state = state;
226 static int bma180_set_ee_writing_state(struct bma180_data *data, bool state)
228 int ret = bma180_set_bits(data, BMA180_CTRL_REG0, BMA180_EE_W, state);
231 dev_err(&data->client->dev,
232 "failed to set ee writing state %d\n", state);
237 static int bma180_set_bw(struct bma180_data *data, int val)
241 if (data->sleep_state)
244 for (i = 0; i < data->part_info->num_bw; ++i) {
245 if (data->part_info->bw_table[i] == val) {
246 ret = bma180_set_bits(data, data->part_info->bw_reg,
247 data->part_info->bw_mask,
248 i + data->part_info->bw_offset);
250 dev_err(&data->client->dev,
251 "failed to set bandwidth\n");
262 static int bma180_set_scale(struct bma180_data *data, int val)
266 if (data->sleep_state)
269 for (i = 0; i < data->part_info->num_scales; ++i)
270 if (data->part_info->scale_table[i] == val) {
271 ret = bma180_set_bits(data, data->part_info->scale_reg,
272 data->part_info->scale_mask, i);
274 dev_err(&data->client->dev,
275 "failed to set scale\n");
285 static int bma180_set_pmode(struct bma180_data *data, bool mode)
287 u8 reg_val = mode ? data->part_info->lowpower_val : 0;
288 int ret = bma180_set_bits(data, data->part_info->power_reg,
289 data->part_info->power_mask, reg_val);
292 dev_err(&data->client->dev, "failed to set power mode\n");
300 static int bma180_soft_reset(struct bma180_data *data)
302 int ret = i2c_smbus_write_byte_data(data->client,
303 data->part_info->softreset_reg, BMA180_RESET_VAL);
306 dev_err(&data->client->dev, "failed to reset the chip\n");
311 static int bma180_chip_init(struct bma180_data *data)
313 /* Try to read chip_id register. It must return 0x03. */
314 int ret = i2c_smbus_read_byte_data(data->client, BMA180_CHIP_ID);
318 if (ret != BMA180_ID_REG_VAL)
321 ret = bma180_soft_reset(data);
325 * No serial transaction should occur within minimum 10 us
326 * after soft_reset command
330 ret = bma180_set_new_data_intr_state(data, false);
334 return bma180_set_pmode(data, false);
337 static int bma180_chip_config(struct bma180_data *data)
339 int ret = bma180_chip_init(data);
343 ret = bma180_set_bits(data, BMA180_CTRL_REG0, BMA180_DIS_WAKE_UP, 1);
346 ret = bma180_set_ee_writing_state(data, true);
349 ret = bma180_set_bits(data, BMA180_OFFSET_LSB1, BMA180_SMP_SKIP, 1);
352 ret = bma180_set_bw(data, 20); /* 20 Hz */
355 ret = bma180_set_scale(data, 2452); /* 2 G */
362 dev_err(&data->client->dev, "failed to config the chip\n");
366 static int bma250_chip_config(struct bma180_data *data)
368 int ret = bma180_chip_init(data);
372 ret = bma180_set_bw(data, 16); /* 16 Hz */
375 ret = bma180_set_scale(data, 38344); /* 2 G */
378 ret = bma180_set_bits(data, BMA250_INT_MAP_REG,
379 BMA250_INT1_DATA_MASK, 1);
386 dev_err(&data->client->dev, "failed to config the chip\n");
390 static void bma180_chip_disable(struct bma180_data *data)
392 if (bma180_set_new_data_intr_state(data, false))
394 if (bma180_set_ee_writing_state(data, false))
396 if (bma180_set_sleep_state(data, true))
402 dev_err(&data->client->dev, "failed to disable the chip\n");
405 static void bma250_chip_disable(struct bma180_data *data)
407 if (bma180_set_new_data_intr_state(data, false))
409 if (bma180_set_sleep_state(data, true))
415 dev_err(&data->client->dev, "failed to disable the chip\n");
418 static ssize_t bma180_show_avail(char *buf, const int *vals, unsigned int n,
424 for (i = 0; i < n; i++) {
427 len += scnprintf(buf + len, PAGE_SIZE - len,
428 micros ? "0.%06d " : "%d ", vals[i]);
435 static ssize_t bma180_show_filter_freq_avail(struct device *dev,
436 struct device_attribute *attr, char *buf)
438 struct bma180_data *data = iio_priv(dev_to_iio_dev(dev));
440 return bma180_show_avail(buf, data->part_info->bw_table,
441 data->part_info->num_bw, false);
444 static ssize_t bma180_show_scale_avail(struct device *dev,
445 struct device_attribute *attr, char *buf)
447 struct bma180_data *data = iio_priv(dev_to_iio_dev(dev));
449 return bma180_show_avail(buf, data->part_info->scale_table,
450 data->part_info->num_scales, true);
453 static IIO_DEVICE_ATTR(in_accel_filter_low_pass_3db_frequency_available,
454 S_IRUGO, bma180_show_filter_freq_avail, NULL, 0);
456 static IIO_DEVICE_ATTR(in_accel_scale_available,
457 S_IRUGO, bma180_show_scale_avail, NULL, 0);
459 static struct attribute *bma180_attributes[] = {
460 &iio_dev_attr_in_accel_filter_low_pass_3db_frequency_available.
462 &iio_dev_attr_in_accel_scale_available.dev_attr.attr,
466 static const struct attribute_group bma180_attrs_group = {
467 .attrs = bma180_attributes,
470 static int bma180_read_raw(struct iio_dev *indio_dev,
471 struct iio_chan_spec const *chan, int *val, int *val2,
474 struct bma180_data *data = iio_priv(indio_dev);
478 case IIO_CHAN_INFO_RAW:
479 ret = iio_device_claim_direct_mode(indio_dev);
483 mutex_lock(&data->mutex);
484 ret = bma180_get_data_reg(data, chan->scan_index);
485 mutex_unlock(&data->mutex);
486 iio_device_release_direct_mode(indio_dev);
489 *val = sign_extend32(ret >> chan->scan_type.shift,
490 chan->scan_type.realbits - 1);
492 case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
495 case IIO_CHAN_INFO_SCALE:
496 switch (chan->type) {
500 return IIO_VAL_INT_PLUS_MICRO;
507 case IIO_CHAN_INFO_OFFSET:
508 *val = 48; /* 0 LSB @ 24 degree C */
515 static int bma180_write_raw(struct iio_dev *indio_dev,
516 struct iio_chan_spec const *chan, int val, int val2, long mask)
518 struct bma180_data *data = iio_priv(indio_dev);
522 case IIO_CHAN_INFO_SCALE:
525 mutex_lock(&data->mutex);
526 ret = bma180_set_scale(data, val2);
527 mutex_unlock(&data->mutex);
529 case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
532 mutex_lock(&data->mutex);
533 ret = bma180_set_bw(data, val);
534 mutex_unlock(&data->mutex);
541 static const struct iio_info bma180_info = {
542 .attrs = &bma180_attrs_group,
543 .read_raw = bma180_read_raw,
544 .write_raw = bma180_write_raw,
547 static const char * const bma180_power_modes[] = { "low_noise", "low_power" };
549 static int bma180_get_power_mode(struct iio_dev *indio_dev,
550 const struct iio_chan_spec *chan)
552 struct bma180_data *data = iio_priv(indio_dev);
557 static int bma180_set_power_mode(struct iio_dev *indio_dev,
558 const struct iio_chan_spec *chan, unsigned int mode)
560 struct bma180_data *data = iio_priv(indio_dev);
563 mutex_lock(&data->mutex);
564 ret = bma180_set_pmode(data, mode);
565 mutex_unlock(&data->mutex);
570 static const struct iio_enum bma180_power_mode_enum = {
571 .items = bma180_power_modes,
572 .num_items = ARRAY_SIZE(bma180_power_modes),
573 .get = bma180_get_power_mode,
574 .set = bma180_set_power_mode,
577 static const struct iio_chan_spec_ext_info bma180_ext_info[] = {
578 IIO_ENUM("power_mode", true, &bma180_power_mode_enum),
579 IIO_ENUM_AVAILABLE("power_mode", &bma180_power_mode_enum),
583 #define BMA180_ACC_CHANNEL(_axis, _bits) { \
586 .channel2 = IIO_MOD_##_axis, \
587 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
588 .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
589 BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), \
590 .scan_index = AXIS_##_axis, \
595 .shift = 16 - _bits, \
597 .ext_info = bma180_ext_info, \
600 #define BMA180_TEMP_CHANNEL { \
602 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
603 BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_OFFSET), \
604 .scan_index = TEMP, \
612 static const struct iio_chan_spec bma180_channels[] = {
613 BMA180_ACC_CHANNEL(X, 14),
614 BMA180_ACC_CHANNEL(Y, 14),
615 BMA180_ACC_CHANNEL(Z, 14),
617 IIO_CHAN_SOFT_TIMESTAMP(4),
620 static const struct iio_chan_spec bma250_channels[] = {
621 BMA180_ACC_CHANNEL(X, 10),
622 BMA180_ACC_CHANNEL(Y, 10),
623 BMA180_ACC_CHANNEL(Z, 10),
625 IIO_CHAN_SOFT_TIMESTAMP(4),
628 static const struct bma180_part_info bma180_part_info[] = {
630 .channels = bma180_channels,
631 .num_channels = ARRAY_SIZE(bma180_channels),
632 .scale_table = bma180_scale_table,
633 .num_scales = ARRAY_SIZE(bma180_scale_table),
634 .bw_table = bma180_bw_table,
635 .num_bw = ARRAY_SIZE(bma180_bw_table),
636 .int_reset_reg = BMA180_CTRL_REG0,
637 .int_reset_mask = BMA180_RESET_INT,
638 .sleep_reg = BMA180_CTRL_REG0,
639 .sleep_mask = BMA180_SLEEP,
640 .bw_reg = BMA180_BW_TCS,
641 .bw_mask = BMA180_BW,
642 .scale_reg = BMA180_OFFSET_LSB1,
643 .scale_mask = BMA180_RANGE,
644 .power_reg = BMA180_TCO_Z,
645 .power_mask = BMA180_MODE_CONFIG,
646 .lowpower_val = BMA180_LOW_POWER,
647 .int_enable_reg = BMA180_CTRL_REG3,
648 .int_enable_mask = BMA180_NEW_DATA_INT,
649 .softreset_reg = BMA180_RESET,
650 .chip_config = bma180_chip_config,
651 .chip_disable = bma180_chip_disable,
654 .channels = bma250_channels,
655 .num_channels = ARRAY_SIZE(bma250_channels),
656 .scale_table = bma250_scale_table,
657 .num_scales = ARRAY_SIZE(bma250_scale_table),
658 .bw_table = bma250_bw_table,
659 .num_bw = ARRAY_SIZE(bma250_bw_table),
660 .int_reset_reg = BMA250_INT_RESET_REG,
661 .int_reset_mask = BMA250_INT_RESET_MASK,
662 .sleep_reg = BMA250_POWER_REG,
663 .sleep_mask = BMA250_SUSPEND_MASK,
664 .bw_reg = BMA250_BW_REG,
665 .bw_mask = BMA250_BW_MASK,
666 .bw_offset = BMA250_BW_OFFSET,
667 .scale_reg = BMA250_RANGE_REG,
668 .scale_mask = BMA250_RANGE_MASK,
669 .power_reg = BMA250_POWER_REG,
670 .power_mask = BMA250_LOWPOWER_MASK,
672 .int_enable_reg = BMA250_INT_ENABLE_REG,
673 .int_enable_mask = BMA250_DATA_INTEN_MASK,
674 .softreset_reg = BMA250_RESET_REG,
675 .chip_config = bma250_chip_config,
676 .chip_disable = bma250_chip_disable,
680 static irqreturn_t bma180_trigger_handler(int irq, void *p)
682 struct iio_poll_func *pf = p;
683 struct iio_dev *indio_dev = pf->indio_dev;
684 struct bma180_data *data = iio_priv(indio_dev);
685 s64 time_ns = iio_get_time_ns(indio_dev);
688 mutex_lock(&data->mutex);
690 for_each_set_bit(bit, indio_dev->active_scan_mask,
691 indio_dev->masklength) {
692 ret = bma180_get_data_reg(data, bit);
694 mutex_unlock(&data->mutex);
697 data->scan.chan[i++] = ret;
700 mutex_unlock(&data->mutex);
702 iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, time_ns);
704 iio_trigger_notify_done(indio_dev->trig);
709 static int bma180_data_rdy_trigger_set_state(struct iio_trigger *trig,
712 struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
713 struct bma180_data *data = iio_priv(indio_dev);
715 return bma180_set_new_data_intr_state(data, state);
718 static int bma180_trig_try_reen(struct iio_trigger *trig)
720 struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
721 struct bma180_data *data = iio_priv(indio_dev);
723 return bma180_reset_intr(data);
726 static const struct iio_trigger_ops bma180_trigger_ops = {
727 .set_trigger_state = bma180_data_rdy_trigger_set_state,
728 .try_reenable = bma180_trig_try_reen,
731 static int bma180_probe(struct i2c_client *client,
732 const struct i2c_device_id *id)
734 struct bma180_data *data;
735 struct iio_dev *indio_dev;
739 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
743 data = iio_priv(indio_dev);
744 i2c_set_clientdata(client, indio_dev);
745 data->client = client;
746 if (client->dev.of_node)
747 chip = (enum chip_ids)of_device_get_match_data(&client->dev);
749 chip = id->driver_data;
750 data->part_info = &bma180_part_info[chip];
752 ret = data->part_info->chip_config(data);
754 goto err_chip_disable;
756 mutex_init(&data->mutex);
757 indio_dev->dev.parent = &client->dev;
758 indio_dev->channels = data->part_info->channels;
759 indio_dev->num_channels = data->part_info->num_channels;
760 indio_dev->name = id->name;
761 indio_dev->modes = INDIO_DIRECT_MODE;
762 indio_dev->info = &bma180_info;
764 if (client->irq > 0) {
765 data->trig = iio_trigger_alloc("%s-dev%d", indio_dev->name,
769 goto err_chip_disable;
772 ret = devm_request_irq(&client->dev, client->irq,
773 iio_trigger_generic_data_rdy_poll, IRQF_TRIGGER_RISING,
774 "bma180_event", data->trig);
776 dev_err(&client->dev, "unable to request IRQ\n");
777 goto err_trigger_free;
780 data->trig->dev.parent = &client->dev;
781 data->trig->ops = &bma180_trigger_ops;
782 iio_trigger_set_drvdata(data->trig, indio_dev);
783 indio_dev->trig = iio_trigger_get(data->trig);
785 ret = iio_trigger_register(data->trig);
787 goto err_trigger_free;
790 ret = iio_triggered_buffer_setup(indio_dev, NULL,
791 bma180_trigger_handler, NULL);
793 dev_err(&client->dev, "unable to setup iio triggered buffer\n");
794 goto err_trigger_unregister;
797 ret = iio_device_register(indio_dev);
799 dev_err(&client->dev, "unable to register iio device\n");
800 goto err_buffer_cleanup;
806 iio_triggered_buffer_cleanup(indio_dev);
807 err_trigger_unregister:
809 iio_trigger_unregister(data->trig);
811 iio_trigger_free(data->trig);
813 data->part_info->chip_disable(data);
818 static int bma180_remove(struct i2c_client *client)
820 struct iio_dev *indio_dev = i2c_get_clientdata(client);
821 struct bma180_data *data = iio_priv(indio_dev);
823 iio_device_unregister(indio_dev);
824 iio_triggered_buffer_cleanup(indio_dev);
826 iio_trigger_unregister(data->trig);
827 iio_trigger_free(data->trig);
830 mutex_lock(&data->mutex);
831 data->part_info->chip_disable(data);
832 mutex_unlock(&data->mutex);
837 #ifdef CONFIG_PM_SLEEP
838 static int bma180_suspend(struct device *dev)
840 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
841 struct bma180_data *data = iio_priv(indio_dev);
844 mutex_lock(&data->mutex);
845 ret = bma180_set_sleep_state(data, true);
846 mutex_unlock(&data->mutex);
851 static int bma180_resume(struct device *dev)
853 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
854 struct bma180_data *data = iio_priv(indio_dev);
857 mutex_lock(&data->mutex);
858 ret = bma180_set_sleep_state(data, false);
859 mutex_unlock(&data->mutex);
864 static SIMPLE_DEV_PM_OPS(bma180_pm_ops, bma180_suspend, bma180_resume);
865 #define BMA180_PM_OPS (&bma180_pm_ops)
867 #define BMA180_PM_OPS NULL
870 static const struct i2c_device_id bma180_ids[] = {
871 { "bma180", BMA180 },
872 { "bma250", BMA250 },
876 MODULE_DEVICE_TABLE(i2c, bma180_ids);
878 static const struct of_device_id bma180_of_match[] = {
880 .compatible = "bosch,bma180",
881 .data = (void *)BMA180
884 .compatible = "bosch,bma250",
885 .data = (void *)BMA250
889 MODULE_DEVICE_TABLE(of, bma180_of_match);
891 static struct i2c_driver bma180_driver = {
895 .of_match_table = bma180_of_match,
897 .probe = bma180_probe,
898 .remove = bma180_remove,
899 .id_table = bma180_ids,
902 module_i2c_driver(bma180_driver);
904 MODULE_AUTHOR("Kravchenko Oleksandr <x0199363@ti.com>");
905 MODULE_AUTHOR("Texas Instruments, Inc.");
906 MODULE_DESCRIPTION("Bosch BMA180/BMA250 triaxial acceleration sensor");
907 MODULE_LICENSE("GPL");