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 or 4 // redistributing this file, you may do so under either license. 5 // 6 // Copyright(c) 2018 Intel Corporation. All rights reserved. 7 // 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 IP 16 */ 17 18 #include <sound/hdaudio_ext.h> 19 #include "../ops.h" 20 #include "hda.h" 21 22 static 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 39 int hda_dsp_trace_init(struct snd_sof_dev *sdev, 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 corresponding 58 * stream tag which will be sent to the firmware by IPC message. 59 */ 60 ret = hda_dsp_trace_prepare(sdev, &sdev->dmatb); 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 } 71 72 int hda_dsp_trace_release(struct snd_sof_dev *sdev) 73 { 74 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 75 struct hdac_stream *hstream; 76 77 if (hda->dtrace_stream) { 78 hstream = &hda->dtrace_stream->hstream; 79 hda_dsp_stream_put(sdev, 80 SNDRV_PCM_STREAM_CAPTURE, 81 hstream->stream_tag); 82 hda->dtrace_stream = NULL; 83 return 0; 84 } 85 86 dev_dbg(sdev->dev, "DMA trace stream is not opened!\n"); 87 return -ENODEV; 88 } 89 90 int hda_dsp_trace_trigger(struct snd_sof_dev *sdev, int cmd) 91 { 92 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 93 94 return hda_dsp_stream_trigger(sdev, hda->dtrace_stream, cmd); 95 } 96