95 строки
2.5 KiB
C
95 строки
2.5 KiB
C
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
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//
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// This file is provided under a dual BSD/GPLv2 license. When using or
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// redistributing this file, you may do so under either license.
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//
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// Copyright(c) 2018 Intel Corporation. All rights reserved.
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//
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// Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com>
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// Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
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// Rander Wang <rander.wang@intel.com>
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// Keyon Jie <yang.jie@linux.intel.com>
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//
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/*
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* Hardware interface for generic Intel audio DSP HDA IP
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*/
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#include <sound/hdaudio_ext.h>
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#include "../ops.h"
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#include "hda.h"
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static int hda_dsp_trace_prepare(struct snd_sof_dev *sdev)
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{
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struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
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struct hdac_ext_stream *stream = hda->dtrace_stream;
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struct hdac_stream *hstream = &stream->hstream;
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struct snd_dma_buffer *dmab = &sdev->dmatb;
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int ret;
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hstream->period_bytes = 0;/* initialize period_bytes */
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hstream->bufsize = sdev->dmatb.bytes;
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ret = hda_dsp_stream_hw_params(sdev, stream, dmab, NULL);
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if (ret < 0)
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dev_err(sdev->dev, "error: hdac prepare failed: %x\n", ret);
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return ret;
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}
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int hda_dsp_trace_init(struct snd_sof_dev *sdev, u32 *stream_tag)
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{
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struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
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int ret;
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hda->dtrace_stream = hda_dsp_stream_get(sdev,
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SNDRV_PCM_STREAM_CAPTURE);
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if (!hda->dtrace_stream) {
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dev_err(sdev->dev,
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"error: no available capture stream for DMA trace\n");
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return -ENODEV;
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}
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*stream_tag = hda->dtrace_stream->hstream.stream_tag;
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/*
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* initialize capture stream, set BDL address and return corresponding
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* stream tag which will be sent to the firmware by IPC message.
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*/
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ret = hda_dsp_trace_prepare(sdev);
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if (ret < 0) {
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dev_err(sdev->dev, "error: hdac trace init failed: %x\n", ret);
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hda_dsp_stream_put(sdev, SNDRV_PCM_STREAM_CAPTURE, *stream_tag);
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hda->dtrace_stream = NULL;
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*stream_tag = 0;
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}
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return ret;
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}
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int hda_dsp_trace_release(struct snd_sof_dev *sdev)
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{
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struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
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struct hdac_stream *hstream;
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if (hda->dtrace_stream) {
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hstream = &hda->dtrace_stream->hstream;
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hda_dsp_stream_put(sdev,
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SNDRV_PCM_STREAM_CAPTURE,
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hstream->stream_tag);
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hda->dtrace_stream = NULL;
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return 0;
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}
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dev_dbg(sdev->dev, "DMA trace stream is not opened!\n");
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return -ENODEV;
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}
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int hda_dsp_trace_trigger(struct snd_sof_dev *sdev, int cmd)
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{
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struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
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return hda_dsp_stream_trigger(sdev, hda->dtrace_stream, cmd);
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}
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