include/sound/ump_msg.h

File Facts

System

Linux kernel

Corpus path

include/sound/ump_msg.h

Extension

.h

Size

14143 bytes

Lines

766

Domain

Driver Families

Bucket

include/sound

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

• No C-style include directives detected by the generator.

Detected Declarations

• struct snd_ump_midi1_msg_note
• struct snd_ump_midi1_msg_paf
• struct snd_ump_midi1_msg_cc
• struct snd_ump_midi1_msg_program
• struct snd_ump_midi1_msg_caf
• struct snd_ump_midi1_msg_pitchbend
• struct snd_ump_system_msg
• struct snd_ump_midi2_msg_note
• struct snd_ump_midi2_msg_paf
• struct snd_ump_midi2_msg_pernote_cc
• struct snd_ump_midi2_msg_pernote_mgmt
• struct snd_ump_midi2_msg_cc
• struct snd_ump_midi2_msg_rpn
• struct snd_ump_midi2_msg_program
• struct snd_ump_midi2_msg_caf
• struct snd_ump_midi2_msg_pitchbend
• struct snd_ump_midi2_msg_pernote_pitchbend
• struct snd_ump_stream_msg_ep_discovery
• struct snd_ump_stream_msg_ep_info
• struct snd_ump_stream_msg_device_info
• struct snd_ump_stream_msg_stream_cfg
• struct snd_ump_stream_msg_fb_discovery
• struct snd_ump_stream_msg_fb_info
• struct snd_ump_stream_msg_fb_name

Annotated Snippet

struct snd_ump_midi1_msg_note {
#ifdef __BIG_ENDIAN_BITFIELD
	u32 type:4;
	u32 group:4;
	u32 status:4;
	u32 channel:4;
	u32 note:8;
	u32 velocity:8;
#else
	u32 velocity:8;
	u32 note:8;
	u32 channel:4;
	u32 status:4;
	u32 group:4;
	u32 type:4;
#endif
} __packed;

/* MIDI 1.0 Poly Pressure (32bit) */
struct snd_ump_midi1_msg_paf {
#ifdef __BIG_ENDIAN_BITFIELD
	u32 type:4;
	u32 group:4;
	u32 status:4;
	u32 channel:4;
	u32 note:8;
	u32 data:8;
#else
	u32 data:8;
	u32 note:8;
	u32 channel:4;
	u32 status:4;
	u32 group:4;
	u32 type:4;
#endif
} __packed;

/* MIDI 1.0 Control Change (32bit) */
struct snd_ump_midi1_msg_cc {
#ifdef __BIG_ENDIAN_BITFIELD
	u32 type:4;
	u32 group:4;
	u32 status:4;
	u32 channel:4;
	u32 index:8;
	u32 data:8;
#else
	u32 data:8;
	u32 index:8;
	u32 channel:4;
	u32 status:4;
	u32 group:4;
	u32 type:4;
#endif
} __packed;

/* MIDI 1.0 Program Change (32bit) */
struct snd_ump_midi1_msg_program {
#ifdef __BIG_ENDIAN_BITFIELD
	u32 type:4;
	u32 group:4;
	u32 status:4;
	u32 channel:4;
	u32 program:8;
	u32 reserved:8;
#else
	u32 reserved:8;
	u32 program:8;
	u32 channel:4;
	u32 status:4;
	u32 group:4;
	u32 type:4;
#endif
} __packed;

/* MIDI 1.0 Channel Pressure (32bit) */
struct snd_ump_midi1_msg_caf {
#ifdef __BIG_ENDIAN_BITFIELD
	u32 type:4;
	u32 group:4;
	u32 status:4;
	u32 channel:4;
	u32 data:8;
	u32 reserved:8;
#else
	u32 reserved:8;
	u32 data:8;
	u32 channel:4;
	u32 status:4;
	u32 group:4;

Annotation

• Detected declarations: `struct snd_ump_midi1_msg_note`, `struct snd_ump_midi1_msg_paf`, `struct snd_ump_midi1_msg_cc`, `struct snd_ump_midi1_msg_program`, `struct snd_ump_midi1_msg_caf`, `struct snd_ump_midi1_msg_pitchbend`, `struct snd_ump_system_msg`, `struct snd_ump_midi2_msg_note`, `struct snd_ump_midi2_msg_paf`, `struct snd_ump_midi2_msg_pernote_cc`.
• Atlas domain: Driver Families / include/sound.
• 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.