include/linux/iio/driver.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Industrial I/O in kernel access map interface.
   4  *
   5  * Copyright (c) 2011 Jonathan Cameron
   6  */
   7
   8 #ifndef _IIO_INKERN_H_
   9 #define _IIO_INKERN_H_
  10
  11 struct device;
  12 struct iio_dev;
  13 struct iio_map;
  14
  15 /**
  16  * iio_map_array_register() - tell the core about inkernel consumers
  17  * @indio_dev:  provider device
  18  * @map:        array of mappings specifying association of channel with client
  19  */
  20 int iio_map_array_register(struct iio_dev *indio_dev,
  21                            const struct iio_map *map);
  22
  23 /**
  24  * iio_map_array_unregister() - tell the core to remove consumer mappings for
  25  *                              the given provider device
  26  * @indio_dev:  provider device
  27  */
  28 int iio_map_array_unregister(struct iio_dev *indio_dev);
  29
  30 /**
  31  * devm_iio_map_array_register - device-managed version of iio_map_array_register
  32  * @dev:        Device object to which to bind the unwinding of this registration
  33  * @indio_dev:  Pointer to the iio_dev structure
  34  * @maps:       Pointer to an IIO map object which is to be registered to this IIO device
  35  *
  36  * This function will call iio_map_array_register() to register an IIO map object
  37  * and will also hook a callback to the iio_map_array_unregister() function to
  38  * handle de-registration of the IIO map object when the device's refcount goes to
  39  * zero.
  40  */
  41 int devm_iio_map_array_register(struct device *dev, struct iio_dev *indio_dev,
  42                                 const struct iio_map *maps);
  43
  44 #endif