drivers/mfd/qcom-pm8xxx.c

File Facts

System

Linux kernel

Corpus path

drivers/mfd/qcom-pm8xxx.c

Extension

.c

Size

15786 bytes

Lines

613

Domain

Driver Families

Bucket

drivers/mfd

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.
• 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/kernel.h
• linux/interrupt.h
• linux/irqchip/chained_irq.h
• linux/irq.h
• linux/irqdomain.h
• linux/module.h
• linux/platform_device.h
• linux/slab.h
• linux/err.h
• linux/ssbi.h
• linux/regmap.h
• linux/of_platform.h
• linux/mfd/core.h

Detected Declarations

• struct pm_irq_data
• struct pm_irq_chip
• function pm8xxx_read_block_irq
• function pm8xxx_config_irq
• function pm8xxx_irq_block_handler
• function pm8xxx_irq_master_handler
• function pm8xxx_irq_handler
• function pm8821_irq_block_handler
• function pm8821_irq_master_handler
• function pm8821_irq_handler
• function pm8xxx_irq_mask_ack
• function pm8xxx_irq_unmask
• function pm8xxx_irq_set_type
• function pm8xxx_irq_get_irqchip_state
• function pm8xxx_irq_domain_map
• function pm8xxx_irq_domain_alloc
• function pm8821_irq_mask_ack
• function pm8821_irq_unmask
• function pm8821_irq_get_irqchip_state
• function pm8xxx_probe
• function pm8xxx_remove
• function pm8xxx_init
• function pm8xxx_exit
• module init pm8xxx_init

Annotated Snippet

subsys_initcall(pm8xxx_init);

static void __exit pm8xxx_exit(void)
{
	platform_driver_unregister(&pm8xxx_driver);
}
module_exit(pm8xxx_exit);

MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("PMIC 8xxx core driver");
MODULE_VERSION("1.0");
MODULE_ALIAS("platform:pm8xxx-core");

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/interrupt.h`, `linux/irqchip/chained_irq.h`, `linux/irq.h`, `linux/irqdomain.h`, `linux/module.h`, `linux/platform_device.h`, `linux/slab.h`.
• Detected declarations: `struct pm_irq_data`, `struct pm_irq_chip`, `function pm8xxx_read_block_irq`, `function pm8xxx_config_irq`, `function pm8xxx_irq_block_handler`, `function pm8xxx_irq_master_handler`, `function pm8xxx_irq_handler`, `function pm8821_irq_block_handler`, `function pm8821_irq_master_handler`, `function pm8821_irq_handler`.
• Atlas domain: Driver Families / drivers/mfd.
• 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.