iio: add Bosch BMA180 acceleration sensor driver

This patch adds IIO driver for Bosch BMA180 triaxial
acceleration sensor.
http://dlnmh9ip6v2uc.cloudfront.net/datasheets/
		Sensors/Accelerometers/BST-BMA180-DS000-07_2.pdf

Signed-off-by: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

3 files changed, 689 insertions, 0 deletions

diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index 61ca7ec0f3e7..e23e50850655 100644
--- a/drivers/iio/accel/Kconfig
+++ b/drivers/iio/accel/Kconfig
@@ -5,6 +5,18 @@
 
 menu "Accelerometers"
 
+config BMA180
+        tristate "Bosch BMA180 3-Axis Accelerometer Driver"
+        depends on I2C
+        select IIO_BUFFER
+        select IIO_TRIGGERED_BUFFER
+        help
+          Say Y here if you want to build a driver for the Bosch BMA180
+          triaxial acceleration sensor.
+
+          To compile this driver as a module, choose M here: the
+          module will be called bma180.
+
 config HID_SENSOR_ACCEL_3D
         depends on HID_SENSOR_HUB
         select IIO_BUFFER
diff --git a/drivers/iio/accel/Makefile b/drivers/iio/accel/Makefile
index 2f95a3dffa47..c48d15f25616 100644
--- a/drivers/iio/accel/Makefile
+++ b/drivers/iio/accel/Makefile
@@ -3,6 +3,7 @@
 #
 
 # When adding new entries keep the list in alphabetical order
+obj-$(CONFIG_BMA180) += bma180.o
 obj-$(CONFIG_HID_SENSOR_ACCEL_3D) += hid-sensor-accel-3d.o
 obj-$(CONFIG_KXSD9)     += kxsd9.o
 
diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
new file mode 100644
index 000000000000..12e32e6b4103
--- /dev/null
+++ b/drivers/iio/accel/bma180.c
@@ -0,0 +1,676 @@
+/*
+ * bma180.c - IIO driver for Bosch BMA180 triaxial acceleration sensor
+ *
+ * Copyright 2013 Oleksandr Kravchenko <x0199363@ti.com>
+ *
+ * This file is subject to the terms and conditions of version 2 of
+ * the GNU General Public License.  See the file COPYING in the main
+ * directory of this archive for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/bitops.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+
+#define BMA180_DRV_NAME "bma180"
+#define BMA180_IRQ_NAME "bma180_event"
+
+/* Register set */
+#define BMA180_CHIP_ID          0x00 /* Need to distinguish BMA180 from other */
+#define BMA180_ACC_X_LSB        0x02 /* First of 6 registers of accel data */
+#define BMA180_CTRL_REG0        0x0d
+#define BMA180_RESET            0x10
+#define BMA180_BW_TCS           0x20
+#define BMA180_CTRL_REG3        0x21
+#define BMA180_TCO_Z            0x30
+#define BMA180_OFFSET_LSB1      0x35
+
+/* BMA180_CTRL_REG0 bits */
+#define BMA180_DIS_WAKE_UP      BIT(0) /* Disable wake up mode */
+#define BMA180_SLEEP            BIT(1) /* 1 - chip will sleep */
+#define BMA180_EE_W             BIT(4) /* Unlock writing to addr from 0x20 */
+#define BMA180_RESET_INT        BIT(6) /* Reset pending interrupts */
+
+/* BMA180_CTRL_REG3 bits */
+#define BMA180_NEW_DATA_INT     BIT(1) /* Intr every new accel data is ready */
+
+/* BMA180_OFFSET_LSB1 skipping mode bit */
+#define BMA180_SMP_SKIP         BIT(0)
+
+/* Bit masks for registers bit fields */
+#define BMA180_RANGE            0x0e /* Range of measured accel values*/
+#define BMA180_BW               0xf0 /* Accel bandwidth */
+#define BMA180_MODE_CONFIG      0x03 /* Config operation modes */
+
+/* We have to write this value in reset register to do soft reset */
+#define BMA180_RESET_VAL        0xb6
+
+#define BMA_180_ID_REG_VAL      0x03
+
+/* Chip power modes */
+#define BMA180_LOW_NOISE        0x00
+#define BMA180_LOW_POWER        0x03
+
+#define BMA180_LOW_NOISE_STR    "low_noise"
+#define BMA180_LOW_POWER_STR    "low_power"
+
+/* Defaults values */
+#define BMA180_DEF_PMODE        0
+#define BMA180_DEF_BW           20
+#define BMA180_DEF_SCALE        250
+
+/* Available values for sysfs */
+#define BMA180_FLP_FREQ_AVAILABLE \
+        "10 20 40 75 150 300"
+#define BMA180_SCALE_AVAILABLE \
+        "0.000130 0.000190 0.000250 0.000380 0.000500 0.000990 0.001980"
+
+struct bma180_data {
+        struct i2c_client *client;
+        struct iio_trigger *trig;
+        struct mutex mutex;
+        int sleep_state;
+        int scale;
+        int bw;
+        int pmode;
+        char *buff;
+};
+
+enum bma180_axis {
+        AXIS_X,
+        AXIS_Y,
+        AXIS_Z,
+};
+
+static int bw_table[] = { 10, 20, 40, 75, 150, 300 }; /* Hz */
+static int scale_table[] = { 130, 190, 250, 380, 500, 990, 1980 };
+
+static int bma180_get_acc_reg(struct bma180_data *data, enum bma180_axis axis)
+{
+        u8 reg = BMA180_ACC_X_LSB + axis * 2;
+        int ret;
+
+        if (data->sleep_state)
+                return -EBUSY;
+
+        ret = i2c_smbus_read_word_data(data->client, reg);
+        if (ret < 0)
+                dev_err(&data->client->dev,
+                        "failed to read accel_%c registers\n", 'x' + axis);
+
+        return ret;
+}
+
+static int bma180_set_bits(struct bma180_data *data, u8 reg, u8 mask, u8 val)
+{
+        int ret = i2c_smbus_read_byte_data(data->client, reg);
+        u8 reg_val = (ret & ~mask) | (val << (ffs(mask) - 1));
+
+        if (ret < 0)
+                return ret;
+
+        return i2c_smbus_write_byte_data(data->client, reg, reg_val);
+}
+
+static int bma180_reset_intr(struct bma180_data *data)
+{
+        int ret = bma180_set_bits(data, BMA180_CTRL_REG0, BMA180_RESET_INT, 1);
+
+        if (ret)
+                dev_err(&data->client->dev, "failed to reset interrupt\n");
+
+        return ret;
+}
+
+static int bma180_set_new_data_intr_state(struct bma180_data *data, int state)
+{
+        u8 reg_val = state ? BMA180_NEW_DATA_INT : 0x00;
+        int ret = i2c_smbus_write_byte_data(data->client, BMA180_CTRL_REG3,
+                        reg_val);
+
+        if (ret)
+                goto err;
+        ret = bma180_reset_intr(data);
+        if (ret)
+                goto err;
+
+        return 0;
+
+err:
+        dev_err(&data->client->dev,
+                "failed to set new data interrupt state %d\n", state);
+        return ret;
+}
+
+static int bma180_set_sleep_state(struct bma180_data *data, int state)
+{
+        int ret = bma180_set_bits(data, BMA180_CTRL_REG0, BMA180_SLEEP, state);
+
+        if (ret) {
+                dev_err(&data->client->dev,
+                        "failed to set sleep state %d\n", state);
+                return ret;
+        }
+        data->sleep_state = state;
+
+        return 0;
+}
+
+static int bma180_set_ee_writing_state(struct bma180_data *data, int state)
+{
+        int ret = bma180_set_bits(data, BMA180_CTRL_REG0, BMA180_EE_W, state);
+
+        if (ret)
+                dev_err(&data->client->dev,
+                        "failed to set ee writing state %d\n", state);
+
+        return ret;
+}
+
+static int bma180_set_bw(struct bma180_data *data, int val)
+{
+        int ret, i;
+
+        if (data->sleep_state)
+                return -EBUSY;
+
+        for (i = 0; i < ARRAY_SIZE(bw_table); ++i) {
+                if (bw_table[i] == val) {
+                        ret = bma180_set_bits(data,
+                                        BMA180_BW_TCS, BMA180_BW, i);
+                        if (ret) {
+                                dev_err(&data->client->dev,
+                                        "failed to set bandwidth\n");
+                                return ret;
+                        }
+                        data->bw = val;
+                        return 0;
+                }
+        }
+
+        return -EINVAL;
+}
+
+static int bma180_set_scale(struct bma180_data *data, int val)
+{
+        int ret, i;
+
+        if (data->sleep_state)
+                return -EBUSY;
+
+        for (i = 0; i < ARRAY_SIZE(scale_table); ++i)
+                if (scale_table[i] == val) {
+                        ret = bma180_set_bits(data,
+                                        BMA180_OFFSET_LSB1, BMA180_RANGE, i);
+                        if (ret) {
+                                dev_err(&data->client->dev,
+                                        "failed to set scale\n");
+                                return ret;
+                        }
+                        data->scale = val;
+                        return 0;
+                }
+
+        return -EINVAL;
+}
+
+static int bma180_set_pmode(struct bma180_data *data, int mode)
+{
+        u8 reg_val = mode ? BMA180_LOW_POWER : BMA180_LOW_NOISE;
+        int ret = bma180_set_bits(data, BMA180_TCO_Z, BMA180_MODE_CONFIG,
+                        reg_val);
+
+        if (ret) {
+                dev_err(&data->client->dev, "failed to set power mode\n");
+                return ret;
+        }
+        data->pmode = mode;
+
+        return 0;
+}
+
+static int bma180_soft_reset(struct bma180_data *data)
+{
+        int ret = i2c_smbus_write_byte_data(data->client,
+                        BMA180_RESET, BMA180_RESET_VAL);
+
+        if (ret)
+                dev_err(&data->client->dev, "failed to reset the chip\n");
+
+        return ret;
+}
+
+static int bma180_chip_init(struct bma180_data *data)
+{
+        /* Try to read chip_id register. It must return 0x03. */
+        int ret = i2c_smbus_read_byte_data(data->client, BMA180_CHIP_ID);
+
+        if (ret < 0)
+                goto err;
+        if (ret != BMA_180_ID_REG_VAL) {
+                ret = -ENODEV;
+                goto err;
+        }
+
+        ret = bma180_soft_reset(data);
+        if (ret)
+                goto err;
+        /*
+         * No serial transaction should occur within minimum 10 us
+         * after soft_reset command
+         */
+        msleep(20);
+
+        ret = bma180_set_bits(data, BMA180_CTRL_REG0, BMA180_DIS_WAKE_UP, 1);
+        if (ret)
+                goto err;
+        ret = bma180_set_ee_writing_state(data, 1);
+        if (ret)
+                goto err;
+        ret = bma180_set_new_data_intr_state(data, 0);
+        if (ret)
+                goto err;
+        ret = bma180_set_bits(data, BMA180_OFFSET_LSB1, BMA180_SMP_SKIP, 1);
+        if (ret)
+                goto err;
+        ret = bma180_set_pmode(data, BMA180_DEF_PMODE);
+        if (ret)
+                goto err;
+        ret = bma180_set_bw(data, BMA180_DEF_BW);
+        if (ret)
+                goto err;
+        ret = bma180_set_scale(data, BMA180_DEF_SCALE);
+        if (ret)
+                goto err;
+
+        return 0;
+
+err:
+        dev_err(&data->client->dev, "failed to init the chip\n");
+        return ret;
+}
+
+static void bma180_chip_disable(struct bma180_data *data)
+{
+        if (bma180_set_new_data_intr_state(data, 0))
+                goto err;
+        if (bma180_set_ee_writing_state(data, 0))
+                goto err;
+        if (bma180_set_sleep_state(data, 1))
+                goto err;
+
+        return;
+
+err:
+        dev_err(&data->client->dev, "failed to disable the chip\n");
+}
+
+static IIO_CONST_ATTR(in_accel_filter_low_pass_3db_frequency_available,
+                BMA180_FLP_FREQ_AVAILABLE);
+static IIO_CONST_ATTR(in_accel_scale_available, BMA180_SCALE_AVAILABLE);
+
+static struct attribute *bma180_attributes[] = {
+        &iio_const_attr_in_accel_filter_low_pass_3db_frequency_available.dev_attr.attr,
+        &iio_const_attr_in_accel_scale_available.dev_attr.attr,
+        NULL,
+};
+
+static const struct attribute_group bma180_attrs_group = {
+        .attrs = bma180_attributes,
+};
+
+static int bma180_read_raw(struct iio_dev *indio_dev,
+                struct iio_chan_spec const *chan, int *val, int *val2,
+                long mask)
+{
+        struct bma180_data *data = iio_priv(indio_dev);
+        int ret;
+
+        switch (mask) {
+        case IIO_CHAN_INFO_RAW:
+                mutex_lock(&data->mutex);
+                if (iio_buffer_enabled(indio_dev))
+                        ret = -EBUSY;
+                else
+                        ret = bma180_get_acc_reg(data, chan->scan_index);
+                mutex_unlock(&data->mutex);
+                if (ret < 0)
+                        return ret;
+                *val = (s16)ret >> chan->scan_type.shift;
+                return IIO_VAL_INT;
+        case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+                *val = data->bw;
+                return IIO_VAL_INT;
+        case IIO_CHAN_INFO_SCALE:
+                *val = 0;
+                *val2 = data->scale;
+                return IIO_VAL_INT_PLUS_MICRO;
+        default:
+                return -EINVAL;
+        }
+}
+
+static int bma180_write_raw(struct iio_dev *indio_dev,
+                struct iio_chan_spec const *chan, int val, int val2, long mask)
+{
+        struct bma180_data *data = iio_priv(indio_dev);
+        int ret;
+
+        switch (mask) {
+        case IIO_CHAN_INFO_SCALE:
+                if (val)
+                        return -EINVAL;
+                mutex_lock(&data->mutex);
+                ret = bma180_set_scale(data, val2);
+                mutex_unlock(&data->mutex);
+                return ret;
+        case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+                mutex_lock(&data->mutex);
+                ret = bma180_set_bw(data, val);
+                mutex_unlock(&data->mutex);
+                return ret;
+        default:
+                return -EINVAL;
+        }
+}
+
+static int bma180_update_scan_mode(struct iio_dev *indio_dev,
+                const unsigned long *scan_mask)
+{
+        struct bma180_data *data = iio_priv(indio_dev);
+
+        if (data->buff)
+                devm_kfree(&indio_dev->dev, data->buff);
+        data->buff = devm_kzalloc(&indio_dev->dev,
+                        indio_dev->scan_bytes, GFP_KERNEL);
+        if (!data->buff)
+                return -ENOMEM;
+
+        return 0;
+}
+
+static const struct iio_info bma180_info = {
+        .attrs                  = &bma180_attrs_group,
+        .read_raw               = bma180_read_raw,
+        .write_raw              = bma180_write_raw,
+        .update_scan_mode       = bma180_update_scan_mode,
+        .driver_module          = THIS_MODULE,
+};
+
+static const char * const bma180_power_modes[] = {
+        BMA180_LOW_NOISE_STR,
+        BMA180_LOW_POWER_STR,
+};
+
+static int bma180_get_power_mode(struct iio_dev *indio_dev,
+                const struct iio_chan_spec *chan)
+{
+        struct bma180_data *data = iio_priv(indio_dev);
+
+        return data->pmode;
+}
+
+static int bma180_set_power_mode(struct iio_dev *indio_dev,
+                const struct iio_chan_spec *chan, unsigned int mode)
+{
+        struct bma180_data *data = iio_priv(indio_dev);
+        int ret;
+
+        mutex_lock(&data->mutex);
+        ret = bma180_set_pmode(data, mode);
+        mutex_unlock(&data->mutex);
+
+        return ret;
+}
+
+static const struct iio_enum bma180_power_mode_enum = {
+        .items = bma180_power_modes,
+        .num_items = ARRAY_SIZE(bma180_power_modes),
+        .get = bma180_get_power_mode,
+        .set = bma180_set_power_mode,
+};
+
+static const struct iio_chan_spec_ext_info bma180_ext_info[] = {
+        IIO_ENUM("power_mode", true, &bma180_power_mode_enum),
+        IIO_ENUM_AVAILABLE("power_mode", &bma180_power_mode_enum),
+        { },
+};
+
+#define BMA180_CHANNEL(_index) {                                        \
+        .type = IIO_ACCEL,                                              \
+        .indexed = 1,                                                   \
+        .channel = (_index),                                            \
+        .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |                  \
+                BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),       \
+        .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),           \
+        .scan_index = (_index),                                         \
+        .scan_type = IIO_ST('s', 14, 16, 2),                            \
+        .ext_info = bma180_ext_info,                                    \
+}
+
+static const struct iio_chan_spec bma180_channels[] = {
+        BMA180_CHANNEL(AXIS_X),
+        BMA180_CHANNEL(AXIS_Y),
+        BMA180_CHANNEL(AXIS_Z),
+        IIO_CHAN_SOFT_TIMESTAMP(4),
+};
+
+static irqreturn_t bma180_trigger_handler(int irq, void *p)
+{
+        struct iio_poll_func *pf = p;
+        struct iio_dev *indio_dev = pf->indio_dev;
+        struct bma180_data *data = iio_priv(indio_dev);
+        int bit, ret, i = 0;
+
+        mutex_lock(&data->mutex);
+        if (indio_dev->scan_timestamp) {
+                ret = indio_dev->scan_bytes / sizeof(s64) - 1;
+                ((s64 *)data->buff)[ret] = iio_get_time_ns();
+        }
+
+        for_each_set_bit(bit, indio_dev->buffer->scan_mask,
+                         indio_dev->masklength) {
+                ret = bma180_get_acc_reg(data, bit);
+                if (ret < 0) {
+                        mutex_unlock(&data->mutex);
+                        goto err;
+                }
+                ((s16 *)data->buff)[i++] = ret;
+        }
+        mutex_unlock(&data->mutex);
+
+        iio_push_to_buffers(indio_dev, (u8 *)data->buff);
+err:
+        iio_trigger_notify_done(indio_dev->trig);
+
+        return IRQ_HANDLED;
+}
+
+static int bma180_data_rdy_trigger_set_state(struct iio_trigger *trig,
+                bool state)
+{
+        struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+        struct bma180_data *data = iio_priv(indio_dev);
+
+        return bma180_set_new_data_intr_state(data, state);
+}
+
+static int bma180_trig_try_reen(struct iio_trigger *trig)
+{
+        struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+        struct bma180_data *data = iio_priv(indio_dev);
+
+        return bma180_reset_intr(data);
+}
+
+static const struct iio_trigger_ops bma180_trigger_ops = {
+        .set_trigger_state = bma180_data_rdy_trigger_set_state,
+        .try_reenable = bma180_trig_try_reen,
+        .owner = THIS_MODULE,
+};
+
+static int bma180_probe(struct i2c_client *client,
+                const struct i2c_device_id *id)
+{
+        struct bma180_data *data;
+        struct iio_dev *indio_dev;
+        struct iio_trigger *trig;
+        int ret;
+
+        indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+        if (!indio_dev)
+                return -ENOMEM;
+
+        data = iio_priv(indio_dev);
+        i2c_set_clientdata(client, indio_dev);
+        data->client = client;
+
+        ret = bma180_chip_init(data);
+        if (ret < 0)
+                goto err_chip_disable;
+
+        mutex_init(&data->mutex);
+
+        indio_dev->dev.parent = &client->dev;
+        indio_dev->channels = bma180_channels;
+        indio_dev->num_channels = ARRAY_SIZE(bma180_channels);
+        indio_dev->name = BMA180_DRV_NAME;
+        indio_dev->modes = INDIO_DIRECT_MODE;
+        indio_dev->info = &bma180_info;
+
+        trig = iio_trigger_alloc("%s-dev%d", indio_dev->name, indio_dev->id);
+        if (!trig) {
+                ret = -ENOMEM;
+                goto err_chip_disable;
+        }
+
+        ret = devm_request_irq(&client->dev, client->irq,
+                        iio_trigger_generic_data_rdy_poll,
+                        IRQF_TRIGGER_RISING, BMA180_IRQ_NAME, trig);
+        if (ret) {
+                dev_err(&client->dev, "unable to request IRQ\n");
+                goto err_trigger_free;
+        }
+
+        trig->dev.parent = &client->dev;
+        trig->ops = &bma180_trigger_ops;
+        iio_trigger_set_drvdata(trig, indio_dev);
+        data->trig = trig;
+        indio_dev->trig = trig;
+
+        ret = iio_trigger_register(trig);
+        if (ret)
+                goto err_trigger_free;
+
+        ret = iio_triggered_buffer_setup(indio_dev, NULL,
+                        bma180_trigger_handler, NULL);
+        if (ret < 0) {
+                dev_err(&client->dev, "unable to setup iio triggered buffer\n");
+                goto err_trigger_unregister;
+        }
+
+        ret = iio_device_register(indio_dev);
+        if (ret < 0) {
+                dev_err(&client->dev, "unable to register iio device\n");
+                goto err_buffer_cleanup;
+        }
+
+        return 0;
+
+err_buffer_cleanup:
+        iio_triggered_buffer_cleanup(indio_dev);
+err_trigger_unregister:
+        iio_trigger_unregister(trig);
+err_trigger_free:
+        iio_trigger_free(trig);
+err_chip_disable:
+        bma180_chip_disable(data);
+
+        return ret;
+}
+
+static int bma180_remove(struct i2c_client *client)
+{
+        struct iio_dev *indio_dev = i2c_get_clientdata(client);
+        struct bma180_data *data = iio_priv(indio_dev);
+
+        iio_device_unregister(indio_dev);
+        iio_triggered_buffer_cleanup(indio_dev);
+        iio_trigger_unregister(data->trig);
+        iio_trigger_free(data->trig);
+
+        mutex_lock(&data->mutex);
+        bma180_chip_disable(data);
+        mutex_unlock(&data->mutex);
+
+        return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int bma180_suspend(struct device *dev)
+{
+        struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+        struct bma180_data *data = iio_priv(indio_dev);
+        int ret;
+
+        mutex_lock(&data->mutex);
+        ret = bma180_set_sleep_state(data, 1);
+        mutex_unlock(&data->mutex);
+
+        return ret;
+}
+
+static int bma180_resume(struct device *dev)
+{
+        struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+        struct bma180_data *data = iio_priv(indio_dev);
+        int ret;
+
+        mutex_lock(&data->mutex);
+        ret = bma180_set_sleep_state(data, 0);
+        mutex_unlock(&data->mutex);
+
+        return ret;
+}
+
+static SIMPLE_DEV_PM_OPS(bma180_pm_ops, bma180_suspend, bma180_resume);
+#define BMA180_PM_OPS (&bma180_pm_ops)
+#else
+#define BMA180_PM_OPS NULL
+#endif
+
+static struct i2c_device_id bma180_id[] = {
+        { BMA180_DRV_NAME, 0 },
+        { }
+};
+
+MODULE_DEVICE_TABLE(i2c, bma180_id);
+
+static struct i2c_driver bma180_driver = {
+        .driver = {
+                .name   = BMA180_DRV_NAME,
+                .owner  = THIS_MODULE,
+                .pm     = BMA180_PM_OPS,
+        },
+        .probe          = bma180_probe,
+        .remove         = bma180_remove,
+        .id_table       = bma180_id,
+};
+
+module_i2c_driver(bma180_driver);
+
+MODULE_AUTHOR("Kravchenko Oleksandr <x0199363@ti.com>");
+MODULE_AUTHOR("Texas Instruments, Inc.");
+MODULE_DESCRIPTION("Bosch BMA180 triaxial acceleration sensor");
+MODULE_LICENSE("GPL");