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1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)2//3// This file is provided under a dual BSD/GPLv2 license. When using or4// redistributing this file, you may do so under either license.5//6// Copyright(c) 2018 Intel Corporation7//8// Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com>9// Ranjani Sridharan <ranjani.sridharan@linux.intel.com>10// Rander Wang <rander.wang@intel.com>11// Keyon Jie <yang.jie@linux.intel.com>12//13 14/*15 * Hardware interface for generic Intel audio DSP HDA IP16 */17 18#include <sound/hdaudio_ext.h>19#include "../ops.h"20#include "hda.h"21 22static int hda_dsp_trace_prepare(struct snd_sof_dev *sdev, struct snd_dma_buffer *dmab)23{24 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;25 struct hdac_ext_stream *hext_stream = hda->dtrace_stream;26 struct hdac_stream *hstream = &hext_stream->hstream;27 int ret;28 29 hstream->period_bytes = 0;/* initialize period_bytes */30 hstream->bufsize = dmab->bytes;31 32 ret = hda_dsp_stream_hw_params(sdev, hext_stream, dmab, NULL);33 if (ret < 0)34 dev_err(sdev->dev, "error: hdac prepare failed: %d\n", ret);35 36 return ret;37}38 39int hda_dsp_trace_init(struct snd_sof_dev *sdev, struct snd_dma_buffer *dmab,40 struct sof_ipc_dma_trace_params_ext *dtrace_params)41{42 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;43 int ret;44 45 hda->dtrace_stream = hda_dsp_stream_get(sdev, SNDRV_PCM_STREAM_CAPTURE,46 SOF_HDA_STREAM_DMI_L1_COMPATIBLE);47 48 if (!hda->dtrace_stream) {49 dev_err(sdev->dev,50 "error: no available capture stream for DMA trace\n");51 return -ENODEV;52 }53 54 dtrace_params->stream_tag = hda->dtrace_stream->hstream.stream_tag;55 56 /*57 * initialize capture stream, set BDL address and return corresponding58 * stream tag which will be sent to the firmware by IPC message.59 */60 ret = hda_dsp_trace_prepare(sdev, dmab);61 if (ret < 0) {62 dev_err(sdev->dev, "error: hdac trace init failed: %d\n", ret);63 hda_dsp_stream_put(sdev, SNDRV_PCM_STREAM_CAPTURE,64 dtrace_params->stream_tag);65 hda->dtrace_stream = NULL;66 dtrace_params->stream_tag = 0;67 }68 69 return ret;70}71EXPORT_SYMBOL_NS(hda_dsp_trace_init, SND_SOC_SOF_INTEL_HDA_COMMON);72 73int hda_dsp_trace_release(struct snd_sof_dev *sdev)74{75 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;76 struct hdac_stream *hstream;77 78 if (hda->dtrace_stream) {79 hstream = &hda->dtrace_stream->hstream;80 hda_dsp_stream_put(sdev,81 SNDRV_PCM_STREAM_CAPTURE,82 hstream->stream_tag);83 hda->dtrace_stream = NULL;84 return 0;85 }86 87 dev_dbg(sdev->dev, "DMA trace stream is not opened!\n");88 return -ENODEV;89}90EXPORT_SYMBOL_NS(hda_dsp_trace_release, SND_SOC_SOF_INTEL_HDA_COMMON);91 92int hda_dsp_trace_trigger(struct snd_sof_dev *sdev, int cmd)93{94 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;95 96 return hda_dsp_stream_trigger(sdev, hda->dtrace_stream, cmd);97}98EXPORT_SYMBOL_NS(hda_dsp_trace_trigger, SND_SOC_SOF_INTEL_HDA_COMMON);99