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: Irina Tirdea <irina.tirdea@xxxxxxxxx> Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx> --- drivers/iio/gyro/Kconfig | 2 +- drivers/iio/gyro/bmg160.c | 39 +++++++++++++++++++++++++++------------ 2 files changed, 28 insertions(+), 13 deletions(-) diff --git a/drivers/iio/gyro/Kconfig b/drivers/iio/gyro/Kconfig index d630ae9..b3d0e94 100644 --- a/drivers/iio/gyro/Kconfig +++ b/drivers/iio/gyro/Kconfig @@ -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. diff --git a/drivers/iio/gyro/bmg160.c b/drivers/iio/gyro/bmg160.c index 80f92a6..7524698 100644 --- a/drivers/iio/gyro/bmg160.c +++ b/drivers/iio/gyro/bmg160.c @@ -947,10 +947,10 @@ static irqreturn_t bmg160_data_rdy_trig_poll(int irq, void *private) } -static int bmg160_acpi_gpio_probe(struct i2c_client *client, - struct bmg160_data *data) +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; @@ -959,12 +959,6 @@ 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); @@ -984,12 +978,24 @@ 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) @@ -1005,15 +1011,21 @@ 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, @@ -1183,12 +1195,15 @@ 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}, {} }; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
