// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license.  When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2018 Intel Corporation
//
// Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com>
//          Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
//          Rander Wang <rander.wang@intel.com>
//          Keyon Jie <yang.jie@linux.intel.com>
//

/*
 * Hardware interface for generic Intel audio DSP HDA IP
 */

#include <sound/hdaudio_ext.h>
#include "../ops.h"
#include "hda.h"

static int hda_dsp_trace_prepare(struct snd_sof_dev *sdev, struct snd_dma_buffer *dmab)
{
        struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
        struct hdac_ext_stream *hext_stream = hda->dtrace_stream;
        struct hdac_stream *hstream = &hext_stream->hstream;
        int ret;

        hstream->period_bytes = 0;/* initialize period_bytes */
        hstream->bufsize = dmab->bytes;

        ret = hda_dsp_stream_hw_params(sdev, hext_stream, dmab, NULL);
        if (ret < 0)
                dev_err(sdev->dev, "error: hdac prepare failed: %d\n", ret);

        return ret;
}

int hda_dsp_trace_init(struct snd_sof_dev *sdev, struct snd_dma_buffer *dmab,
                       struct sof_ipc_dma_trace_params_ext *dtrace_params)
{
        struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
        int ret;

        hda->dtrace_stream = hda_dsp_stream_get(sdev, SNDRV_PCM_STREAM_CAPTURE,
                                                SOF_HDA_STREAM_DMI_L1_COMPATIBLE);

        if (!hda->dtrace_stream) {
                dev_err(sdev->dev,
                        "error: no available capture stream for DMA trace\n");
                return -ENODEV;
        }

        dtrace_params->stream_tag = hda->dtrace_stream->hstream.stream_tag;

        /*
         * initialize capture stream, set BDL address and return corresponding
         * stream tag which will be sent to the firmware by IPC message.
         */
        ret = hda_dsp_trace_prepare(sdev, dmab);
        if (ret < 0) {
                dev_err(sdev->dev, "error: hdac trace init failed: %d\n", ret);
                hda_dsp_stream_put(sdev, SNDRV_PCM_STREAM_CAPTURE,
                                   dtrace_params->stream_tag);
                hda->dtrace_stream = NULL;
                dtrace_params->stream_tag = 0;
        }

        return ret;
}
EXPORT_SYMBOL_NS(hda_dsp_trace_init, "SND_SOC_SOF_INTEL_HDA_COMMON");

int hda_dsp_trace_release(struct snd_sof_dev *sdev)
{
        struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
        struct hdac_stream *hstream;

        if (hda->dtrace_stream) {
                hstream = &hda->dtrace_stream->hstream;
                hda_dsp_stream_put(sdev,
                                   SNDRV_PCM_STREAM_CAPTURE,
                                   hstream->stream_tag);
                hda->dtrace_stream = NULL;
                return 0;
        }

        dev_dbg(sdev->dev, "DMA trace stream is not opened!\n");
        return -ENODEV;
}
EXPORT_SYMBOL_NS(hda_dsp_trace_release, "SND_SOC_SOF_INTEL_HDA_COMMON");

int hda_dsp_trace_trigger(struct snd_sof_dev *sdev, int cmd)
{
        struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;

        return hda_dsp_stream_trigger(sdev, hda->dtrace_stream, cmd);
}
EXPORT_SYMBOL_NS(hda_dsp_trace_trigger, "SND_SOC_SOF_INTEL_HDA_COMMON");