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Commit 3a0888ed authored by Irina Tirdea's avatar Irina Tirdea Committed by Jonathan Cameron
Browse files

iio: gyro: bmi055 gyro sensor driver 

Add support for the BMI055 gyroscope sensor. BMI055 is a package
consisting of an acceleration sensor and a gyroscope. This patch
adds support for the gyroscope only.

Spec downloaded from:
http://ae-bst.resource.bosch.com/media/products/dokumente/bmi055/BST-BMI055-DS000-06.pdf



The BMI055 gyroscope uses the same register definition as BMG160,
but does not specify a temp register. However, the temp register
seems to be working in the same way as for BMG160, so this patch
does not remove the temp channel for BMI055.

Signed-off-by: default avatarIrina Tirdea <irina.tirdea@intel.com>
Reviewed-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent c9bf2373

drivers/iio/gyro/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -56,7 +56,7 @@ config BMG160 
	select IIO_TRIGGERED_BUFFER if IIO_BUFFER

	help

	  Say yes here to build support for Bosch BMG160 Tri-axis Gyro Sensor

	  driver.

	  driver. This driver also supports BMI055 gyroscope.



	  This driver can also be built as a module.  If so, the module

	  will be called bmg160.

drivers/iio/gyro/bmg160.c

+27 −12
Original line number Diff line number Diff line
@@ -949,10 +949,10 @@ static irqreturn_t bmg160_data_rdy_trig_poll(int irq, void *private) 


}



static int bmg160_acpi_gpio_probe(struct i2c_client *client,

static int bmg160_gpio_probe(struct i2c_client *client,

			     struct bmg160_data *data)



{

	const struct acpi_device_id *id;

	struct device *dev;

	struct gpio_desc *gpio;

	int ret;
@@ -961,12 +961,6 @@ static int bmg160_acpi_gpio_probe(struct i2c_client *client, 
		return -EINVAL;



	dev = &client->dev;

	if (!ACPI_HANDLE(dev))

		return -ENODEV;



	id = acpi_match_device(dev->driver->acpi_match_table, dev);

	if (!id)

		return -ENODEV;



	/* data ready gpio interrupt pin */

	gpio = devm_gpiod_get_index(dev, BMG160_GPIO_NAME, 0);
@@ -986,12 +980,24 @@ static int bmg160_acpi_gpio_probe(struct i2c_client *client, 
	return ret;

}



static const char *bmg160_match_acpi_device(struct device *dev)

{

	const struct acpi_device_id *id;



	id = acpi_match_device(dev->driver->acpi_match_table, dev);

	if (!id)

		return NULL;



	return dev_name(dev);

}



static int bmg160_probe(struct i2c_client *client,

			const struct i2c_device_id *id)

{

	struct bmg160_data *data;

	struct iio_dev *indio_dev;

	int ret;

	const char *name = NULL;



	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));

	if (!indio_dev)
@@ -1007,15 +1013,21 @@ static int bmg160_probe(struct i2c_client *client, 


	mutex_init(&data->mutex);



	if (id)

		name = id->name;



	if (ACPI_HANDLE(&client->dev))

		name = bmg160_match_acpi_device(&client->dev);



	indio_dev->dev.parent = &client->dev;

	indio_dev->channels = bmg160_channels;

	indio_dev->num_channels = ARRAY_SIZE(bmg160_channels);

	indio_dev->name = BMG160_DRV_NAME;

	indio_dev->name = name;

	indio_dev->modes = INDIO_DIRECT_MODE;

	indio_dev->info = &bmg160_info;



	if (client->irq <= 0)

		client->irq = bmg160_acpi_gpio_probe(client, data);

		client->irq = bmg160_gpio_probe(client, data);



	if (client->irq > 0) {

		ret = devm_request_threaded_irq(&client->dev,
@@ -1185,12 +1197,15 @@ static const struct dev_pm_ops bmg160_pm_ops = { 


static const struct acpi_device_id bmg160_acpi_match[] = {

	{"BMG0160", 0},

	{"BMI055B", 0},

	{},

};



MODULE_DEVICE_TABLE(acpi, bmg160_acpi_match);



static const struct i2c_device_id bmg160_id[] = {

	{"bmg160", 0},

	{"bmi055_gyro", 0},

	{}

};