Introduce two new helper functions to attach a arbitrary pointer to a IIO device. This is useful to get access to external non-global data from within a IIO device callbacks where only the IIO device is available. Internally these functions use dev_{set,get}_drvdata() on the struct device embedded in the IIO device. Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx> --- include/linux/iio/iio.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index be82936..b18e74e 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -516,6 +516,31 @@ static inline struct iio_dev *iio_device_get(struct iio_dev *indio_dev) return indio_dev ? dev_to_iio_dev(get_device(&indio_dev->dev)) : NULL; } + +/** + * iio_device_set_drvdata() - Set device driver data + * @indio_dev: IIO device structure + * @data: Driver specific data + * + * Allows to attach an arbitrary pointer to an IIO device, which can later be + * retrieved by iio_device_get_drvdata(). + */ +static inline void iio_device_set_drvdata(struct iio_dev *indio_dev, void *data) +{ + dev_set_drvdata(&indio_dev->dev, data); +} + +/** + * iio_device_get_drvdata() - Get device driver data + * @indio_dev: IIO device structure + * + * Returns the data previously set with iio_device_set_drvdata() + */ +static inline void *iio_device_get_drvdata(struct iio_dev *indio_dev) +{ + return dev_get_drvdata(&indio_dev->dev); +} + /* Can we make this smaller? */ #define IIO_ALIGN L1_CACHE_BYTES /** -- 1.7.10.4 -- 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