sound/ppc/snd_ps3.c

File Facts

System

Linux kernel

Corpus path

sound/ppc/snd_ps3.c

Extension

.c

Size

27545 bytes

Lines

1103

Domain

Driver Families

Bucket

sound/ppc

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/dma-mapping.h
• linux/dmapool.h
• linux/gfp.h
• linux/init.h
• linux/interrupt.h
• linux/io.h
• linux/module.h
• sound/asound.h
• sound/control.h
• sound/core.h
• sound/initval.h
• sound/memalloc.h
• sound/pcm.h
• sound/pcm_params.h
• asm/dma.h
• asm/firmware.h
• asm/lv1call.h
• asm/ps3.h
• asm/ps3av.h
• snd_ps3.h
• snd_ps3_reg.h

Detected Declarations

• function read_reg
• function write_reg
• function update_reg
• function update_mask_reg
• function snd_ps3_verify_dma_stop
• function snd_ps3_wait_for_dma_stop
• function snd_ps3_kick_dma
• function v_to_bus
• function snd_ps3_bump_buffer
• function snd_ps3_program_dma
• function snd_ps3_interrupt
• function detected
• function snd_ps3_mute
• function snd_ps3_change_avsetting
• function PS3_AUDIO_AO_3WMCTRL_ASORUN
• function snd_ps3_set_avsetting
• function snd_ps3_pcm_open
• function snd_ps3_pcm_close
• function snd_ps3_delay_to_bytes
• function snd_ps3_pcm_prepare
• function snd_ps3_pcm_trigger
• function scoped_guard
• function scoped_guard
• function snd_ps3_pcm_pointer
• function scoped_guard
• function snd_ps3_spdif_mask_info
• function snd_ps3_spdif_cmask_get
• function snd_ps3_spdif_pmask_get
• function snd_ps3_spdif_default_get
• function snd_ps3_spdif_default_put
• function snd_ps3_map_mmio
• function snd_ps3_unmap_mmio
• function snd_ps3_allocate_irq
• function snd_ps3_free_irq
• function snd_ps3_audio_set_base_addr
• function snd_ps3_audio_fixup
• function snd_ps3_init_avsetting
• function snd_ps3_driver_probe
• function snd_ps3_driver_remove
• function snd_ps3_init
• function snd_ps3_exit
• module init snd_ps3_init

Annotated Snippet

module_init(snd_ps3_init);

static void __exit snd_ps3_exit(void)
{
	ps3_system_bus_driver_unregister(&snd_ps3_bus_driver_info);
}
module_exit(snd_ps3_exit);

MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("PS3 sound driver");
MODULE_AUTHOR("Sony Computer Entertainment Inc.");
MODULE_ALIAS(PS3_MODULE_ALIAS_SOUND);

Annotation

• Immediate include surface: `linux/dma-mapping.h`, `linux/dmapool.h`, `linux/gfp.h`, `linux/init.h`, `linux/interrupt.h`, `linux/io.h`, `linux/module.h`, `sound/asound.h`.
• Detected declarations: `function read_reg`, `function write_reg`, `function update_reg`, `function update_mask_reg`, `function snd_ps3_verify_dma_stop`, `function snd_ps3_wait_for_dma_stop`, `function snd_ps3_kick_dma`, `function v_to_bus`, `function snd_ps3_bump_buffer`, `function snd_ps3_program_dma`.
• Atlas domain: Driver Families / sound/ppc.
• 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.