sound/soc/sof/amd/acp-trace.c
Source file repositories/reference/linux-study-clean/sound/soc/sof/amd/acp-trace.c
File Facts
- System
- Linux kernel
- Corpus path
sound/soc/sof/amd/acp-trace.c- Extension
.c- Size
- 1698 bytes
- Lines
- 65
- Domain
- Driver Families
- Bucket
- sound/soc
- Inferred role
- Driver Families: exported/initcall integration point
- Status
- integration implementation candidate
Why This File Exists
Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
acp.h
Detected Declarations
function acp_sof_trace_releasefunction acp_sof_trace_init
Annotated Snippet
// 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) 2021 Advanced Micro Devices, Inc. All rights reserved.
//
// Authors: Vishnuvardhanrao Ravuapati <vishnuvardhanrao.ravulapati@amd.com>
// V Sujith Kumar Reddy <Vsujithkumar.Reddy@amd.com>
/*This file support Host TRACE Logger driver callback for SOF FW */
#include "acp.h"
#define ACP_LOGGER_STREAM 8
#define NUM_PAGES 16
int acp_sof_trace_release(struct snd_sof_dev *sdev)
{
struct acp_dsp_stream *stream;
struct acp_dev_data *adata;
int ret;
adata = sdev->pdata->hw_pdata;
stream = adata->dtrace_stream;
ret = acp_dsp_stream_put(sdev, stream);
if (ret < 0) {
dev_err(sdev->dev, "Failed to release trace stream\n");
return ret;
}
adata->dtrace_stream = NULL;
return 0;
}
EXPORT_SYMBOL_NS(acp_sof_trace_release, "SND_SOC_SOF_AMD_COMMON");
int acp_sof_trace_init(struct snd_sof_dev *sdev, struct snd_dma_buffer *dmab,
struct sof_ipc_dma_trace_params_ext *dtrace_params)
{
struct acp_dsp_stream *stream;
struct acp_dev_data *adata;
int ret;
adata = sdev->pdata->hw_pdata;
stream = acp_dsp_stream_get(sdev, ACP_LOGGER_STREAM);
if (!stream)
return -ENODEV;
stream->dmab = dmab;
stream->num_pages = NUM_PAGES;
ret = acp_dsp_stream_config(sdev, stream);
if (ret < 0) {
acp_dsp_stream_put(sdev, stream);
return ret;
}
adata->dtrace_stream = stream;
dtrace_params->stream_tag = stream->stream_tag;
dtrace_params->buffer.phy_addr = stream->reg_offset;
return 0;
}
EXPORT_SYMBOL_NS(acp_sof_trace_init, "SND_SOC_SOF_AMD_COMMON");
Annotation
- Immediate include surface: `acp.h`.
- Detected declarations: `function acp_sof_trace_release`, `function acp_sof_trace_init`.
- Atlas domain: Driver Families / sound/soc.
- Implementation status: integration implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.