diff options
Diffstat (limited to 'sound/soc/sof/intel/hda-trace.c')
| -rw-r--r-- | sound/soc/sof/intel/hda-trace.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/sound/soc/sof/intel/hda-trace.c b/sound/soc/sof/intel/hda-trace.c new file mode 100644 index 0000000000..cbb9bd7770 --- /dev/null +++ b/sound/soc/sof/intel/hda-trace.c @@ -0,0 +1,95 @@ +// 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 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; +} + +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); +} |