audio_stream_hw.h

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/* SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright(c) 2020 - 2023 Intel Corporation. All rights reserved.
 */
 
#ifndef __SOF_AUDIO_AUDIO_STREAM_HW_H__
#define __SOF_AUDIO_AUDIO_STREAM_HW_H__
 
#include <sof/audio/audio_stream.h>
#include <stdint.h>
 
#ifdef __ZEPHYR__
 
#include <zephyr/drivers/dma.h>
 
static inline void audio_stream_sync_to_hw(struct audio_stream *stream,
                       const struct dma_status *dma_status)
{
    uintptr_t buf_start = (uintptr_t)audio_stream_get_addr(stream);
 
    /* Note: It is assumed here that dma_status values are reported as bytes. However,
     * this is actually platform-specific. Although unlikely, they could be, for example,
     * words on some particular platform, and changes should be made here to address
     * such case.
     */
 
    assert(dma_status->write_position < audio_stream_get_size(stream));
    assert(dma_status->read_position < audio_stream_get_size(stream));
    assert(dma_status->pending_length <= audio_stream_get_size(stream));
    assert(dma_status->free <= audio_stream_get_size(stream));
 
    audio_stream_set_wptr(stream, (void *)(buf_start + dma_status->write_position));
    audio_stream_set_rptr(stream, (void *)(buf_start + dma_status->read_position));
    audio_stream_set_avail(stream, dma_status->pending_length);
    audio_stream_set_free(stream, dma_status->free);
}
 
#endif /* __ZEPHYR__ */
 
#endif /* __SOF_AUDIO_AUDIO_STREAM_HW_H__ */