drivers/regulator/wm831x-ldo.c

File Facts

System

Linux kernel

Corpus path

drivers/regulator/wm831x-ldo.c

Extension

.c

Size

16905 bytes

Lines

679

Domain

Driver Families

Bucket

drivers/regulator

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.
• 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/module.h
• linux/moduleparam.h
• linux/init.h
• linux/bitops.h
• linux/err.h
• linux/i2c.h
• linux/platform_device.h
• linux/regulator/driver.h
• linux/slab.h
• linux/mfd/wm831x/core.h
• linux/mfd/wm831x/regulator.h
• linux/mfd/wm831x/pdata.h

Detected Declarations

• struct wm831x_ldo
• function wm831x_ldo_uv_irq
• function wm831x_gp_ldo_set_suspend_voltage
• function wm831x_gp_ldo_get_mode
• function wm831x_gp_ldo_set_mode
• function wm831x_gp_ldo_get_status
• function wm831x_gp_ldo_get_optimum_mode
• function wm831x_gp_ldo_probe
• function wm831x_aldo_set_suspend_voltage
• function wm831x_aldo_get_mode
• function wm831x_aldo_set_mode
• function wm831x_aldo_get_status
• function wm831x_aldo_probe
• function wm831x_alive_ldo_set_suspend_voltage
• function wm831x_alive_ldo_get_status
• function wm831x_alive_ldo_probe
• function wm831x_ldo_init
• function wm831x_ldo_exit
• module init wm831x_ldo_init

Annotated Snippet

subsys_initcall(wm831x_ldo_init);

static void __exit wm831x_ldo_exit(void)
{
	platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
}
module_exit(wm831x_ldo_exit);

/* Module information */
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_DESCRIPTION("WM831x LDO driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:wm831x-ldo");
MODULE_ALIAS("platform:wm831x-aldo");
MODULE_ALIAS("platform:wm831x-aliveldo");

Annotation

• Immediate include surface: `linux/module.h`, `linux/moduleparam.h`, `linux/init.h`, `linux/bitops.h`, `linux/err.h`, `linux/i2c.h`, `linux/platform_device.h`, `linux/regulator/driver.h`.
• Detected declarations: `struct wm831x_ldo`, `function wm831x_ldo_uv_irq`, `function wm831x_gp_ldo_set_suspend_voltage`, `function wm831x_gp_ldo_get_mode`, `function wm831x_gp_ldo_set_mode`, `function wm831x_gp_ldo_get_status`, `function wm831x_gp_ldo_get_optimum_mode`, `function wm831x_gp_ldo_probe`, `function wm831x_aldo_set_suspend_voltage`, `function wm831x_aldo_get_mode`.
• Atlas domain: Driver Families / drivers/regulator.
• Implementation status: integration implementation candidate.
• 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.