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
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, 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 corresponding
58 * 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 }
71 EXPORT_SYMBOL_NS(hda_dsp_trace_init, SND_SOC_SOF_INTEL_HDA_COMMON);
72
73 int 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 }
90 EXPORT_SYMBOL_NS(hda_dsp_trace_release, SND_SOC_SOF_INTEL_HDA_COMMON);
91
92 int 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 }
98 EXPORT_SYMBOL_NS(hda_dsp_trace_trigger, SND_SOC_SOF_INTEL_HDA_COMMON);
99
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