sound/pci/rme9652/hdspm.c

File Facts

System

Linux kernel

Corpus path

sound/pci/rme9652/hdspm.c

Extension

.c

Size

186996 bytes

Lines

6865

Domain

Driver Families

Bucket

sound/pci

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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 an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/init.h
• linux/delay.h
• linux/interrupt.h
• linux/module.h
• linux/slab.h
• linux/pci.h
• linux/math64.h
• linux/io.h
• linux/nospec.h
• sound/core.h
• sound/control.h
• sound/pcm.h
• sound/pcm_params.h
• sound/info.h
• sound/asoundef.h
• sound/rawmidi.h
• sound/hwdep.h
• sound/initval.h
• sound/hdspm.h

Detected Declarations

• struct hdspm_midi
• struct hdspm_tco
• struct hdspm
• function HDSPM_bit2freq
• function hdspm_is_raydat_or_aio
• function hdspm_write
• function hdspm_read
• function hdspm_read_in_gain
• function hdspm_read_pb_gain
• function hdspm_write_in_gain
• function hdspm_write_pb_gain
• function snd_hdspm_enable_in
• function snd_hdspm_enable_out
• function snd_hdspm_use_is_exclusive
• function hdspm_round_frequency
• function values
• function hdspm_external_sample_rate
• function hdspm_get_latency
• function hdspm_compute_period_size
• function hdspm_hw_pointer
• function hdspm_start_audio
• function hdspm_stop_audio
• function hdspm_silence_playback
• function hdspm_set_interrupt_interval
• function hdspm_calc_dds_value
• function hdspm_set_dds_value
• function hdspm_set_rate
• function it
• function all_in_all_mixer
• function snd_hdspm_midi_read_byte
• function snd_hdspm_midi_write_byte
• function snd_hdspm_midi_input_available
• function snd_hdspm_midi_output_possible
• function snd_hdspm_flush_midi_input
• function snd_hdspm_midi_output_write
• function snd_hdspm_midi_input_read
• function scoped_guard
• function scoped_guard
• function snd_hdspm_midi_input_trigger
• function snd_hdspm_midi_output_timer
• function snd_hdspm_midi_output_trigger
• function snd_hdspm_midi_input_open
• function snd_hdspm_midi_output_open
• function snd_hdspm_midi_input_close
• function snd_hdspm_midi_output_close
• function snd_hdspm_create_midi
• function hdspm_midi_work
• function hdspm_get_pll_freq

Annotated Snippet

static struct pci_driver hdspm_driver = {
	.name = KBUILD_MODNAME,
	.id_table = snd_hdspm_ids,
	.probe = snd_hdspm_probe,
};

module_pci_driver(hdspm_driver);

Annotation

• Immediate include surface: `linux/init.h`, `linux/delay.h`, `linux/interrupt.h`, `linux/module.h`, `linux/slab.h`, `linux/pci.h`, `linux/math64.h`, `linux/io.h`.
• Detected declarations: `struct hdspm_midi`, `struct hdspm_tco`, `struct hdspm`, `function HDSPM_bit2freq`, `function hdspm_is_raydat_or_aio`, `function hdspm_write`, `function hdspm_read`, `function hdspm_read_in_gain`, `function hdspm_read_pb_gain`, `function hdspm_write_in_gain`.
• Atlas domain: Driver Families / sound/pci.
• Implementation status: pattern implementation candidate.
• This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.