sound/soc/intel/avs/core.c

File Facts

System

Linux kernel

Corpus path

sound/soc/intel/avs/core.c

Extension

.c

Size

26198 bytes

Lines

960

Domain

Driver Families

Bucket

sound/soc

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.
• 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/acpi.h
• linux/module.h
• linux/pci.h
• acpi/nhlt.h
• sound/hda_codec.h
• sound/hda_i915.h
• sound/hda_register.h
• sound/hdaudio.h
• sound/hdaudio_ext.h
• sound/intel-dsp-config.h
• ../../codecs/hda.h
• avs.h
• cldma.h
• debug.h
• messages.h
• pcm.h

Detected Declarations

• function avs_hda_update_config_dword
• function avs_hda_power_gating_enable
• function avs_hdac_clock_gating_enable
• function avs_hda_clock_gating_enable
• function avs_hda_l1sen_enable
• function avs_hdac_bus_init_streams
• function avs_hdac_bus_init_chip
• function probe_codec
• function avs_hdac_bus_probe_codecs
• function avs_hda_probe_work
• function hdac_stream_update_pos
• function hdac_update_stream
• function avs_hda_interrupt
• function avs_hda_irq_handler
• function avs_hda_irq_thread
• function avs_dsp_irq_handler
• function avs_dsp_irq_thread
• function avs_hdac_acquire_irq
• function avs_bus_init
• function avs_pci_probe
• function avs_pci_shutdown
• function avs_pci_remove
• function avs_suspend_standby
• function avs_suspend_common
• function avs_resume_standby
• function avs_resume_common
• function avs_suspend
• function avs_resume
• function avs_runtime_suspend
• function avs_runtime_resume
• function avs_freeze
• function avs_thaw
• function avs_poweroff
• function avs_restore

Annotated Snippet

static struct pci_driver avs_pci_driver = {
	.name = KBUILD_MODNAME,
	.id_table = avs_ids,
	.probe = avs_pci_probe,
	.remove = avs_pci_remove,
	.shutdown = avs_pci_shutdown,
	.dev_groups = avs_attr_groups,
	.driver = {
		.pm = pm_ptr(&avs_dev_pm),
	},
};
module_pci_driver(avs_pci_driver);

MODULE_AUTHOR("Cezary Rojewski <cezary.rojewski@intel.com>");
MODULE_AUTHOR("Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>");
MODULE_DESCRIPTION("Intel cAVS sound driver");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE("intel/avs/skl/dsp_basefw.bin");
MODULE_FIRMWARE("intel/avs/apl/dsp_basefw.bin");
MODULE_FIRMWARE("intel/avs/cnl/dsp_basefw.bin");
MODULE_FIRMWARE("intel/avs/icl/dsp_basefw.bin");
MODULE_FIRMWARE("intel/avs/jsl/dsp_basefw.bin");
MODULE_FIRMWARE("intel/avs/lkf/dsp_basefw.bin");
MODULE_FIRMWARE("intel/avs/tgl/dsp_basefw.bin");
MODULE_FIRMWARE("intel/avs/ehl/dsp_basefw.bin");
MODULE_FIRMWARE("intel/avs/adl/dsp_basefw.bin");
MODULE_FIRMWARE("intel/avs/adl_n/dsp_basefw.bin");
MODULE_FIRMWARE("intel/fcl/dsp_basefw.bin");

Annotation

• Immediate include surface: `linux/acpi.h`, `linux/module.h`, `linux/pci.h`, `acpi/nhlt.h`, `sound/hda_codec.h`, `sound/hda_i915.h`, `sound/hda_register.h`, `sound/hdaudio.h`.
• Detected declarations: `function avs_hda_update_config_dword`, `function avs_hda_power_gating_enable`, `function avs_hdac_clock_gating_enable`, `function avs_hda_clock_gating_enable`, `function avs_hda_l1sen_enable`, `function avs_hdac_bus_init_streams`, `function avs_hdac_bus_init_chip`, `function probe_codec`, `function avs_hdac_bus_probe_codecs`, `function avs_hda_probe_work`.
• Atlas domain: Driver Families / sound/soc.
• Implementation status: pattern 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.