| // 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 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 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, &sdev->dmatb); |
| 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; |
| } |
| |
| 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); |
| } |