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) 23 { 24 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 25 struct hdac_ext_stream *stream = hda->dtrace_stream; 26 struct hdac_stream *hstream = &stream->hstream; 27 struct snd_dma_buffer *dmab = &sdev->dmatb; 28 int ret; 29 30 hstream->period_bytes = 0;/* initialize period_bytes */ 31 hstream->bufsize = sdev->dmatb.bytes; 32 33 ret = hda_dsp_stream_hw_params(sdev, stream, dmab, NULL); 34 if (ret < 0) 35 dev_err(sdev->dev, "error: hdac prepare failed: %x\n", ret); 36 37 return ret; 38 } 39 40 int hda_dsp_trace_init(struct snd_sof_dev *sdev, u32 *stream_tag) 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, 46 SNDRV_PCM_STREAM_CAPTURE); 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 *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); 61 if (ret < 0) { 62 dev_err(sdev->dev, "error: hdac trace init failed: %x\n", ret); 63 hda_dsp_stream_put(sdev, SNDRV_PCM_STREAM_CAPTURE, *stream_tag); 64 hda->dtrace_stream = NULL; 65 *stream_tag = 0; 66 } 67 68 return ret; 69 } 70 71 int hda_dsp_trace_release(struct snd_sof_dev *sdev) 72 { 73 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 74 struct hdac_stream *hstream; 75 76 if (hda->dtrace_stream) { 77 hstream = &hda->dtrace_stream->hstream; 78 hda_dsp_stream_put(sdev, 79 SNDRV_PCM_STREAM_CAPTURE, 80 hstream->stream_tag); 81 hda->dtrace_stream = NULL; 82 return 0; 83 } 84 85 dev_dbg(sdev->dev, "DMA trace stream is not opened!\n"); 86 return -ENODEV; 87 } 88 89 int hda_dsp_trace_trigger(struct snd_sof_dev *sdev, int cmd) 90 { 91 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 92 93 return hda_dsp_stream_trigger(sdev, hda->dtrace_stream, cmd); 94 } 95