drivers/pinctrl/renesas/pinctrl-rza1.c

File Facts

System

Linux kernel

Corpus path

drivers/pinctrl/renesas/pinctrl-rza1.c

Extension

.c

Size

37271 bytes

Lines

1410

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/bitops.h
• linux/err.h
• linux/gpio/driver.h
• linux/init.h
• linux/ioport.h
• linux/module.h
• linux/of.h
• linux/pinctrl/consumer.h
• linux/pinctrl/pinconf-generic.h
• linux/pinctrl/pinctrl.h
• linux/pinctrl/pinmux.h
• linux/platform_device.h
• linux/property.h
• linux/slab.h
• ../core.h
• ../devicetree.h
• ../pinconf.h
• ../pinmux.h

Detected Declarations

• struct rza1_bidir_pin
• struct rza1_bidir_entry
• struct rza1_swio_pin
• struct rza1_swio_entry
• struct rza1_pinmux_conf
• struct rza1_mux_conf
• struct rza1_port
• struct rza1_pinctrl
• function rza1_pinmux_get_bidir
• function rza1_pinmux_get_swio
• function rza1_pinmux_get_flags
• function rza1_set_bit
• function rza1_get_bit
• function rza1_pin_reset
• function rza1_pin_set_direction
• function rza1_pin_set
• function rza1_pin_get
• function rza1_pin_mux_single
• function rza1_gpio_request
• function rza1_gpio_free
• function rza1_gpio_get_direction
• function rza1_gpio_direction_input
• function rza1_gpio_direction_output
• function rza1_gpio_get
• function rza1_gpio_set
• function rza1_dt_node_pin_count
• function rza1_parse_pinmux_node
• function rza1_dt_node_to_map
• function for_each_child_of_node_scoped
• function rza1_dt_free_map
• function rza1_set_mux
• function rza1_parse_gpiochip
• function rza1_gpio_register
• function rza1_pinctrl_register
• function rza1_pinctrl_probe
• function rza1_pinctrl_init
• module init rza1_pinctrl_init

Annotated Snippet

core_initcall(rza1_pinctrl_init);

MODULE_AUTHOR("Jacopo Mondi <jacopo+renesas@jmondi.org");
MODULE_DESCRIPTION("Pin and gpio controller driver for Reneas RZ/A1 SoC");

Annotation

• Immediate include surface: `linux/bitops.h`, `linux/err.h`, `linux/gpio/driver.h`, `linux/init.h`, `linux/ioport.h`, `linux/module.h`, `linux/of.h`, `linux/pinctrl/consumer.h`.
• Detected declarations: `struct rza1_bidir_pin`, `struct rza1_bidir_entry`, `struct rza1_swio_pin`, `struct rza1_swio_entry`, `struct rza1_pinmux_conf`, `struct rza1_mux_conf`, `struct rza1_port`, `struct rza1_pinctrl`, `function rza1_pinmux_get_bidir`, `function rza1_pinmux_get_swio`.
• 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.