drivers/pinctrl/renesas/pinctrl-rzn1.c

File Facts

System

Linux kernel

Corpus path

drivers/pinctrl/renesas/pinctrl-rzn1.c

Extension

.c

Size

26025 bytes

Lines

943

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.
• 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

• dt-bindings/pinctrl/rzn1-pinctrl.h
• linux/clk.h
• linux/device.h
• linux/io.h
• linux/module.h
• linux/of.h
• linux/platform_device.h
• linux/slab.h
• linux/pinctrl/pinconf-generic.h
• linux/pinctrl/pinconf.h
• linux/pinctrl/pinctrl.h
• linux/pinctrl/pinmux.h
• ../core.h
• ../pinconf.h
• ../pinctrl-utils.h

Detected Declarations

• struct rzn1_pinctrl_regs
• struct rzn1_pmx_func
• struct rzn1_pin_group
• struct rzn1_pinctrl
• function rzn1_hw_set_lock
• function rzn1_pinctrl_mdio_select
• function rzn1_set_hw_pin_func
• function rzn1_get_groups_count
• function rzn1_get_group_pins
• function rzn1_dt_node_to_map_one
• function rzn1_dt_node_to_map
• function for_each_child_of_node_scoped
• function rzn1_pmx_get_funcs_count
• function rzn1_pmx_get_groups
• function rzn1_set_mux
• function rzn1_pinconf_get
• function rzn1_pinconf_set
• function rzn1_pinconf_group_get
• function rzn1_pinconf_group_set
• function rzn1_pinctrl_parse_groups
• function rzn1_pinctrl_count_function_groups
• function for_each_child_of_node_scoped
• function rzn1_pinctrl_parse_functions
• function for_each_child_of_node_scoped
• function rzn1_pinctrl_probe_dt
• function for_each_child_of_node_scoped
• function rzn1_pinctrl_probe
• function rzn1_pinctrl_remove
• function _pinctrl_drv_register
• module init _pinctrl_drv_register

Annotated Snippet

subsys_initcall(_pinctrl_drv_register);

MODULE_AUTHOR("Phil Edworthy <phil.edworthy@renesas.com>");
MODULE_DESCRIPTION("Renesas RZ/N1 pinctrl driver");

Annotation

• Immediate include surface: `dt-bindings/pinctrl/rzn1-pinctrl.h`, `linux/clk.h`, `linux/device.h`, `linux/io.h`, `linux/module.h`, `linux/of.h`, `linux/platform_device.h`, `linux/slab.h`.
• Detected declarations: `struct rzn1_pinctrl_regs`, `struct rzn1_pmx_func`, `struct rzn1_pin_group`, `struct rzn1_pinctrl`, `function rzn1_hw_set_lock`, `function rzn1_pinctrl_mdio_select`, `function rzn1_set_hw_pin_func`, `function rzn1_get_groups_count`, `function rzn1_get_group_pins`, `function rzn1_dt_node_to_map_one`.
• Atlas domain: Driver Families / drivers/pinctrl.
• Implementation status: integration implementation candidate.

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.