On 08/13/13 16:44, Oleksandr Kravchenko wrote: > 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@xxxxxxxxxxxxxxx> > --- To play the lazy / busy maintainer. What changed since v2? This is where that information should be. > .../devicetree/bindings/iio/accel/bma180.txt | 24 + > drivers/iio/accel/Kconfig | 12 + > drivers/iio/accel/Makefile | 2 + > drivers/iio/accel/bma180.c | 689 ++++++++++++++++++++ > 4 files changed, 727 insertions(+) > create mode 100644 Documentation/devicetree/bindings/iio/accel/bma180.txt > create mode 100644 drivers/iio/accel/bma180.c > > diff --git a/Documentation/devicetree/bindings/iio/accel/bma180.txt b/Documentation/devicetree/bindings/iio/accel/bma180.txt > new file mode 100644 > index 0000000..c593357 > --- /dev/null > +++ b/Documentation/devicetree/bindings/iio/accel/bma180.txt > @@ -0,0 +1,24 @@ > +* Bosch BMA180 triaxial acceleration sensor > + > +http://omapworld.com/BMA180_111_1002839.pdf > + > +Required properties: > + > + - compatible : should be "bosch,bma180" > + - reg : the I2C address of the sensor > + > +Optional properties: > + > + - interrupt-parent : should be the phandle for the interrupt controller > + > + - interrupts : interrupt mapping for GPIO IRQ, it should by configured with > + flags IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_EDGE_RISING > + > +Example: > + > +bma180@40 { > + compatible = "bosch,bma180"; > + reg = <0x40>; > + interrupt-parent = <&gpio6>; > + interrupts = <18 (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_EDGE_RISING)>; > +}; > diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig > index 719d83f..bd9d581 100644 > --- a/drivers/iio/accel/Kconfig > +++ b/drivers/iio/accel/Kconfig > @@ -3,6 +3,18 @@ > # > 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 87d8fa2..eb09d72 100644 > --- a/drivers/iio/accel/Makefile > +++ b/drivers/iio/accel/Makefile > @@ -2,6 +2,8 @@ > # Makefile for industrial I/O accelerometer drivers > # > > +obj-$(CONFIG_BMA180) += bma180.o > + > obj-$(CONFIG_HID_SENSOR_ACCEL_3D) += hid-sensor-accel-3d.o > > obj-$(CONFIG_IIO_ST_ACCEL_3AXIS) += st_accel.o > diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c > new file mode 100644 > index 0000000..23c738f > --- /dev/null > +++ b/drivers/iio/accel/bma180.c > @@ -0,0 +1,689 @@ > +/* > + * bma180.c - IIO driver for Bosch BMA180 triaxial acceleration sensor > + * > + * Copyright 2013 Oleksandr Kravchenko <x0199363@xxxxxx> > + * > + * 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 operation 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_MODE BMA180_LOW_NOISE_STR > +#define BMA180_DEF_BW 20 > +#define BMA180_DEF_SCALE 250 > + > +/* Available values */ > +#define BMA180_MODE_AVAILABLE \ > + BMA180_LOW_NOISE_STR " " BMA180_LOW_POWER_STR > +#define BMA180_BW_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 mode; > + 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_mode(struct bma180_data *data, const char *str) > +{ > + u8 reg_val; > + int ret; > + > + if (!strcmp(str, BMA180_LOW_NOISE_STR "\n")) > + reg_val = BMA180_LOW_NOISE; > + else if (!strcmp(str, BMA180_LOW_POWER_STR "\n")) > + reg_val = BMA180_LOW_POWER; > + else > + return -EINVAL; > + > + ret = bma180_set_bits(data, BMA180_TCO_Z, BMA180_MODE_CONFIG, reg_val); > + if (ret) > + dev_err(&data->client->dev, "failed to set mode\n"); > + > + data->mode = reg_val; > + > + return ret; > +} > + > +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_mode(data, BMA180_DEF_MODE "\n"); > + 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 ssize_t bma180_read_mode_config(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct iio_dev *indio_dev = dev_to_iio_dev(dev); > + struct bma180_data *data = iio_priv(indio_dev); > + > + return sprintf(buf, "%s\n", > + data->mode ? > + BMA180_LOW_POWER_STR : BMA180_LOW_NOISE_STR); > +} > + > +static ssize_t bma180_write_mode_config(struct device *dev, > + struct device_attribute *attr, const char *buf, size_t len) > +{ > + 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_mode(data, buf); > + mutex_unlock(&data->mutex); > + > + return ret ? ret : len; > +} > + > +static ssize_t bma180_read_bw_config(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct iio_dev *indio_dev = dev_to_iio_dev(dev); > + struct bma180_data *data = iio_priv(indio_dev); > + > + return sprintf(buf, "%d\n", data->bw); > +} > + > +static ssize_t bma180_write_bw_config(struct device *dev, > + struct device_attribute *attr, const char *buf, size_t len) > +{ > + struct iio_dev *indio_dev = dev_to_iio_dev(dev); > + struct bma180_data *data = iio_priv(indio_dev); > + long val; > + int ret = kstrtol(buf, 10, &val); > + > + if (ret) > + return ret; > + > + mutex_lock(&data->mutex); > + ret = bma180_set_bw(data, val); > + mutex_unlock(&data->mutex); > + > + return ret ? ret : len; > +} > + > +static IIO_DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, bma180_read_mode_config, > + bma180_write_mode_config, 0); > +static IIO_CONST_ATTR(mode_available, BMA180_MODE_AVAILABLE); > +static IIO_DEVICE_ATTR(bandwidth, S_IRUGO | S_IWUSR, bma180_read_bw_config, > + bma180_write_bw_config, 0); > +static IIO_CONST_ATTR(bandwidth_available, BMA180_BW_AVAILABLE); > +static IIO_CONST_ATTR(scale_available, BMA180_SCALE_AVAILABLE); > + > +static struct attribute *bma180_attributes[] = { > + &iio_dev_attr_mode.dev_attr.attr, > + &iio_const_attr_mode_available.dev_attr.attr, > + &iio_dev_attr_bandwidth.dev_attr.attr, > + &iio_const_attr_bandwidth_available.dev_attr.attr, > + &iio_const_attr_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_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; > + > + if (mask != IIO_CHAN_INFO_SCALE || val) > + return -EINVAL; > + > + mutex_lock(&data->mutex); > + ret = bma180_set_scale(data, val2); > + mutex_unlock(&data->mutex); > + > + return ret; > +} > + > +static int bma180_update_scan_mode(struct iio_dev *indio_dev, > + const unsigned long *scan_mask) > +{ > + struct bma180_data *data = iio_priv(indio_dev); > + > + kfree(data->buff); > + data->buff = kmalloc(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, > +}; > + > +#define BMA180_CHANNEL(_index) { \ > + .type = IIO_ACCEL, \ > + .indexed = 1, \ > + .channel = (_index), \ > + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ > + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ > + .scan_index = (_index), \ > + .scan_type = IIO_ST('s', 14, 16, 2), \ > +} > + > +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); > + kfree(data->buff); > + > + 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@xxxxxx>"); > +MODULE_AUTHOR("Texas Instruments, Inc."); > +MODULE_DESCRIPTION("Bosch BMA180 triaxial acceleration sensor"); > +MODULE_LICENSE("GPL"); > -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
