sound/usb/qcom/usb_audio_qmi_v01.c

File Facts

System

Linux kernel

Corpus path

sound/usb/qcom/usb_audio_qmi_v01.c

Extension

.c

Size

20914 bytes

Lines

864

Domain

Driver Families

Bucket

sound/usb

Inferred role

Driver Families: implementation source

Status

source 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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/soc/qcom/qmi.h
• usb_audio_qmi_v01.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2022-2025 Qualcomm Innovation Center, Inc. All rights reserved.
 */

#include <linux/soc/qcom/qmi.h>

#include "usb_audio_qmi_v01.h"

static const struct qmi_elem_info mem_info_v01_ei[] = {
	{
		.data_type	= QMI_UNSIGNED_8_BYTE,
		.elem_len	= 1,
		.elem_size	= sizeof(u64),
		.array_type	= NO_ARRAY,
		.tlv_type	= 0,
		.offset		= offsetof(struct mem_info_v01, iova),
	},
	{
		.data_type	= QMI_UNSIGNED_8_BYTE,
		.elem_len	= 1,
		.elem_size	= sizeof(u64),
		.array_type	= NO_ARRAY,
		.tlv_type	= 0,
		.offset		= offsetof(struct mem_info_v01, dma),
	},
	{
		.data_type	= QMI_UNSIGNED_4_BYTE,
		.elem_len	= 1,
		.elem_size	= sizeof(u32),
		.array_type	= NO_ARRAY,
		.tlv_type	= 0,
		.offset		= offsetof(struct mem_info_v01, size),
	},
	{
		.data_type	= QMI_EOTI,
		.array_type	= NO_ARRAY,
		.tlv_type	= QMI_COMMON_TLV_TYPE,
	},
};

static const struct qmi_elem_info apps_mem_info_v01_ei[] = {
	{
		.data_type	= QMI_STRUCT,
		.elem_len	= 1,
		.elem_size	= sizeof(struct mem_info_v01),
		.array_type	= NO_ARRAY,
		.tlv_type	= 0,
		.offset		= offsetof(struct apps_mem_info_v01, evt_ring),
		.ei_array	= mem_info_v01_ei,
	},
	{
		.data_type	= QMI_STRUCT,
		.elem_len	= 1,
		.elem_size	= sizeof(struct mem_info_v01),
		.array_type	= NO_ARRAY,
		.tlv_type	= 0,
		.offset		= offsetof(struct apps_mem_info_v01, tr_data),
		.ei_array	= mem_info_v01_ei,
	},
	{
		.data_type	= QMI_STRUCT,
		.elem_len	= 1,
		.elem_size	= sizeof(struct mem_info_v01),
		.array_type	= NO_ARRAY,
		.tlv_type	= 0,
		.offset		= offsetof(struct apps_mem_info_v01, tr_sync),
		.ei_array	= mem_info_v01_ei,
	},
	{
		.data_type	= QMI_STRUCT,
		.elem_len	= 1,
		.elem_size	= sizeof(struct mem_info_v01),
		.array_type	= NO_ARRAY,
		.tlv_type	= 0,
		.offset		= offsetof(struct apps_mem_info_v01, xfer_buff),
		.ei_array	= mem_info_v01_ei,
	},
	{
		.data_type	= QMI_STRUCT,
		.elem_len	= 1,
		.elem_size	= sizeof(struct mem_info_v01),
		.array_type	= NO_ARRAY,
		.tlv_type	= 0,
		.offset		= offsetof(struct apps_mem_info_v01, dcba),
		.ei_array	= mem_info_v01_ei,
	},
	{
		.data_type	= QMI_EOTI,
		.array_type	= NO_ARRAY,

Annotation

• Immediate include surface: `linux/soc/qcom/qmi.h`, `usb_audio_qmi_v01.h`.
• Atlas domain: Driver Families / sound/usb.
• Implementation status: source 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.