drivers/pinctrl/intel/pinctrl-lynxpoint.c

File Facts

System

Linux kernel

Corpus path

drivers/pinctrl/intel/pinctrl-lynxpoint.c

Extension

.c

Size

23506 bytes

Lines

855

Domain

Driver Families

Bucket

drivers/pinctrl

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.
• 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/array_size.h
• linux/bitops.h
• linux/cleanup.h
• linux/gpio/driver.h
• linux/interrupt.h
• linux/io.h
• linux/module.h
• linux/platform_device.h
• linux/pm.h
• linux/seq_file.h
• linux/slab.h
• linux/types.h
• linux/pinctrl/consumer.h
• linux/pinctrl/pinconf-generic.h
• linux/pinctrl/pinconf.h
• linux/pinctrl/pinctrl.h
• linux/pinctrl/pinmux.h
• pinctrl-intel.h

Detected Declarations

• function LP0_CONFIG1
• function lp_gpio_acpi_use
• function lp_gpio_ioxapic_use
• function lp_pin_dbg_show
• function lp_pinmux_set_mux
• function lp_gpio_enable_input
• function lp_gpio_disable_input
• function lp_gpio_request_enable
• function lp_gpio_disable_free
• function lp_gpio_set_direction
• function lp_pin_config_get
• function lp_pin_config_set
• function lp_gpio_get
• function lp_gpio_set
• function lp_gpio_direction_input
• function lp_gpio_direction_output
• function lp_gpio_get_direction
• function lp_gpio_irq_handler
• function lp_irq_ack
• function lp_irq_unmask
• function lp_irq_disable
• function lp_irq_set_type
• function lp_gpio_irq_init_hw
• function lp_gpio_probe
• function lp_gpio_resume
• function lp_gpio_init
• function lp_gpio_exit
• module init lp_gpio_init

Annotated Snippet

subsys_initcall(lp_gpio_init);

static void __exit lp_gpio_exit(void)
{
	platform_driver_unregister(&lp_gpio_driver);
}
module_exit(lp_gpio_exit);

MODULE_AUTHOR("Mathias Nyman (Intel)");
MODULE_AUTHOR("Andy Shevchenko (Intel)");
MODULE_DESCRIPTION("Intel Lynxpoint pinctrl driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:lp_gpio");
MODULE_IMPORT_NS("PINCTRL_INTEL");

Annotation

• Immediate include surface: `linux/acpi.h`, `linux/array_size.h`, `linux/bitops.h`, `linux/cleanup.h`, `linux/gpio/driver.h`, `linux/interrupt.h`, `linux/io.h`, `linux/module.h`.
• Detected declarations: `function LP0_CONFIG1`, `function lp_gpio_acpi_use`, `function lp_gpio_ioxapic_use`, `function lp_pin_dbg_show`, `function lp_pinmux_set_mux`, `function lp_gpio_enable_input`, `function lp_gpio_disable_input`, `function lp_gpio_request_enable`, `function lp_gpio_disable_free`, `function lp_gpio_set_direction`.
• Atlas domain: Driver Families / drivers/pinctrl.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.