linux/drivers/iio/buffer/industrialio-hw-consumer.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright 2017 Analog Devices Inc.
 *  Author: Lars-Peter Clausen <[email protected]>
 */

#include <linux/err.h>
#include <linux/export.h>
#include <linux/slab.h>
#include <linux/module.h>

#include <linux/iio/iio.h>
#include <linux/iio/consumer.h>
#include <linux/iio/hw-consumer.h>
#include <linux/iio/buffer_impl.h>

/**
 * struct iio_hw_consumer - IIO hw consumer block
 * @buffers: hardware buffers list head.
 * @channels: IIO provider channels.
 */
struct iio_hw_consumer { … };

struct hw_consumer_buffer { … };

static struct hw_consumer_buffer *iio_buffer_to_hw_consumer_buffer(
	struct iio_buffer *buffer)
{ … }

static void iio_hw_buf_release(struct iio_buffer *buffer)
{ … }

static const struct iio_buffer_access_funcs iio_hw_buf_access = …;

static struct hw_consumer_buffer *iio_hw_consumer_get_buffer(
	struct iio_hw_consumer *hwc, struct iio_dev *indio_dev)
{ … }

/**
 * iio_hw_consumer_alloc() - Allocate IIO hardware consumer
 * @dev: Pointer to consumer device.
 *
 * Returns a valid iio_hw_consumer on success or a ERR_PTR() on failure.
 */
struct iio_hw_consumer *iio_hw_consumer_alloc(struct device *dev)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * iio_hw_consumer_free() - Free IIO hardware consumer
 * @hwc: hw consumer to free.
 */
void iio_hw_consumer_free(struct iio_hw_consumer *hwc)
{ … }
EXPORT_SYMBOL_GPL(…);

static void devm_iio_hw_consumer_release(void *iio_hwc)
{ … }

/**
 * devm_iio_hw_consumer_alloc - Resource-managed iio_hw_consumer_alloc()
 * @dev: Pointer to consumer device.
 *
 * Managed iio_hw_consumer_alloc. iio_hw_consumer allocated with this function
 * is automatically freed on driver detach.
 *
 * returns pointer to allocated iio_hw_consumer on success, NULL on failure.
 */
struct iio_hw_consumer *devm_iio_hw_consumer_alloc(struct device *dev)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * iio_hw_consumer_enable() - Enable IIO hardware consumer
 * @hwc: iio_hw_consumer to enable.
 *
 * Returns 0 on success.
 */
int iio_hw_consumer_enable(struct iio_hw_consumer *hwc)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * iio_hw_consumer_disable() - Disable IIO hardware consumer
 * @hwc: iio_hw_consumer to disable.
 */
void iio_hw_consumer_disable(struct iio_hw_consumer *hwc)
{ … }
EXPORT_SYMBOL_GPL(…);

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;