LXR linux/include/linux/iio/sw

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Industrial I/O software trigger interface
   4 *
   5 * Copyright (c) 2015 Intel Corporation
   6 */
   7
   8#ifndef __IIO_SW_TRIGGER
   9#define __IIO_SW_TRIGGER
  10
  11#include <linux/module.h>
  12#include <linux/device.h>
  13#include <linux/iio/iio.h>
  14#include <linux/configfs.h>
  15
  16#define module_iio_sw_trigger_driver(__iio_sw_trigger_type) \
  17        module_driver(__iio_sw_trigger_type, iio_register_sw_trigger_type, \
  18                      iio_unregister_sw_trigger_type)
  19
  20struct iio_sw_trigger_ops;
  21
  22struct iio_sw_trigger_type {
  23        const char *name;
  24        struct module *owner;
  25        const struct iio_sw_trigger_ops *ops;
  26        struct list_head list;
  27        struct config_group *group;
  28};
  29
  30struct iio_sw_trigger {
  31        struct iio_trigger *trigger;
  32        struct iio_sw_trigger_type *trigger_type;
  33        struct config_group group;
  34};
  35
  36struct iio_sw_trigger_ops {
  37        struct iio_sw_trigger* (*probe)(const char *);
  38        int (*remove)(struct iio_sw_trigger *);
  39};
  40
  41static inline
  42struct iio_sw_trigger *to_iio_sw_trigger(struct config_item *item)
  43{
  44        return container_of(to_config_group(item), struct iio_sw_trigger,
  45                            group);
  46}
  47
  48int iio_register_sw_trigger_type(struct iio_sw_trigger_type *tt);
  49void iio_unregister_sw_trigger_type(struct iio_sw_trigger_type *tt);
  50
  51struct iio_sw_trigger *iio_sw_trigger_create(const char *, const char *);
  52void iio_sw_trigger_destroy(struct iio_sw_trigger *);
  53
  54int iio_sw_trigger_type_configfs_register(struct iio_sw_trigger_type *tt);
  55void iio_sw_trigger_type_configfs_unregister(struct iio_sw_trigger_type *tt);
  56
  57static inline
  58void iio_swt_group_init_type_name(struct iio_sw_trigger *t,
  59                                  const char *name,
  60                                  const struct config_item_type *type)
  61{
  62#if IS_ENABLED(CONFIG_CONFIGFS_FS)
  63        config_group_init_type_name(&t->group, name, type);
  64#endif
  65}
  66
  67#endif /* __IIO_SW_TRIGGER */
  68