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// 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. All rights reserved.
//
// 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 sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
struct hdac_ext_stream *stream = hda->dtrace_stream;
struct hdac_stream *hstream = &stream->hstream;
struct snd_dma_buffer *dmab = &sdev->dmatb;
int ret;
hstream->period_bytes = 0;/* initialize period_bytes */
hstream->bufsize = sdev->dmatb.bytes;
ret = hda_dsp_stream_hw_params(sdev, 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, u32 *stream_tag)
{
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;
}
*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);
if (ret < 0) {
dev_err(sdev->dev, "error: hdac trace init failed: %d\n", ret);
hda_dsp_stream_put(sdev, SNDRV_PCM_STREAM_CAPTURE, *stream_tag);
hda->dtrace_stream = NULL;
*stream_tag = 0;
}
return ret;
}
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;
}
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);
}
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