diff options
Diffstat (limited to 'drivers/iio/common/st_sensors/st_sensors_i2c.c')
| -rw-r--r-- | drivers/iio/common/st_sensors/st_sensors_i2c.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/iio/common/st_sensors/st_sensors_i2c.c b/drivers/iio/common/st_sensors/st_sensors_i2c.c index 38af9440c103..bb6f3085f57b 100644 --- a/drivers/iio/common/st_sensors/st_sensors_i2c.c +++ b/drivers/iio/common/st_sensors/st_sensors_i2c.c @@ -12,6 +12,7 @@ #include <linux/module.h> #include <linux/slab.h> #include <linux/iio/iio.h> +#include <linux/of_device.h> #include <linux/iio/common/st_sensors_i2c.h> @@ -76,6 +77,35 @@ void st_sensors_i2c_configure(struct iio_dev *indio_dev, } EXPORT_SYMBOL(st_sensors_i2c_configure); +#ifdef CONFIG_OF +/** + * st_sensors_of_i2c_probe() - device tree probe for ST I2C sensors + * @client: the I2C client device for the sensor + * @match: the OF match table for the device, containing compatible strings + * but also a .data field with the corresponding internal kernel name + * used by this sensor. + * + * In effect this function matches a compatible string to an internal kernel + * name for a certain sensor device, so that the rest of the autodetection can + * rely on that name from this point on. I2C client devices will be renamed + * to match the internal kernel convention. + */ +void st_sensors_of_i2c_probe(struct i2c_client *client, + const struct of_device_id *match) +{ + const struct of_device_id *of_id; + + of_id = of_match_device(match, &client->dev); + if (!of_id) + return; + + /* The name from the OF match takes precedence if present */ + strncpy(client->name, of_id->data, sizeof(client->name)); + client->name[sizeof(client->name) - 1] = '\0'; +} +EXPORT_SYMBOL(st_sensors_of_i2c_probe); +#endif + MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); MODULE_DESCRIPTION("STMicroelectronics ST-sensors i2c driver"); MODULE_LICENSE("GPL v2"); |