sound/isa/es18xx.c

File Facts

System

Linux kernel

Corpus path

sound/isa/es18xx.c

Extension

.c

Size

67607 bytes

Lines

2338

Domain

Driver Families

Bucket

sound/isa

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

Dependency Surface

• linux/init.h
• linux/err.h
• linux/isa.h
• linux/pnp.h
• linux/isapnp.h
• linux/module.h
• linux/delay.h
• linux/io.h
• asm/dma.h
• sound/core.h
• sound/control.h
• sound/pcm.h
• sound/pcm_params.h
• sound/mpu401.h
• sound/opl3.h
• sound/initval.h

Detected Declarations

• struct snd_es18xx
• function snd_es18xx_dsp_command
• function snd_es18xx_dsp_get_byte
• function snd_es18xx_write
• function snd_es18xx_read
• function snd_es18xx_bits
• function snd_es18xx_mixer_write
• function snd_es18xx_mixer_read
• function snd_es18xx_mixer_bits
• function snd_es18xx_mixer_writable
• function snd_es18xx_reset
• function snd_es18xx_reset_fifo
• function snd_es18xx_rate_set
• function snd_es18xx_playback_hw_params
• function snd_es18xx_playback1_prepare
• function snd_es18xx_playback1_trigger
• function snd_es18xx_capture_hw_params
• function params_channels
• function snd_es18xx_capture_prepare
• function snd_es18xx_capture_trigger
• function snd_es18xx_playback2_prepare
• function snd_es18xx_playback2_trigger
• function snd_es18xx_playback_prepare
• function snd_es18xx_playback_trigger
• function snd_es18xx_interrupt
• function snd_es18xx_playback_pointer
• function snd_es18xx_capture_pointer
• function snd_es18xx_playback_open
• function snd_es18xx_capture_open
• function snd_es18xx_playback_close
• function snd_es18xx_capture_close
• function snd_es18xx_info_mux
• function snd_es18xx_get_mux
• function snd_es18xx_put_mux
• function snd_es18xx_get_spatializer_enable
• function snd_es18xx_put_spatializer_enable
• function snd_es18xx_info_hw_volume
• function snd_es18xx_get_hw_volume
• function snd_es18xx_get_hw_switch
• function snd_es18xx_hwv_free
• function snd_es18xx_reg_bits
• function snd_es18xx_reg_read
• function snd_es18xx_info_single
• function snd_es18xx_get_single
• function snd_es18xx_put_single
• function snd_es18xx_info_double
• function snd_es18xx_get_double
• function snd_es18xx_put_double

Annotated Snippet

module_init(alsa_card_es18xx_init)
module_exit(alsa_card_es18xx_exit)

Annotation

• Immediate include surface: `linux/init.h`, `linux/err.h`, `linux/isa.h`, `linux/pnp.h`, `linux/isapnp.h`, `linux/module.h`, `linux/delay.h`, `linux/io.h`.
• Detected declarations: `struct snd_es18xx`, `function snd_es18xx_dsp_command`, `function snd_es18xx_dsp_get_byte`, `function snd_es18xx_write`, `function snd_es18xx_read`, `function snd_es18xx_bits`, `function snd_es18xx_mixer_write`, `function snd_es18xx_mixer_read`, `function snd_es18xx_mixer_bits`, `function snd_es18xx_mixer_writable`.
• Atlas domain: Driver Families / sound/isa.
• Implementation status: integration implementation candidate.
• 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.