drivers/pinctrl/renesas/pinctrl-rzt2h.c

File Facts

System

Linux kernel

Corpus path

drivers/pinctrl/renesas/pinctrl-rzt2h.c

Extension

.c

Size

35688 bytes

Lines

1306

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/array_size.h
• linux/bitfield.h
• linux/bitops.h
• linux/bits.h
• linux/cleanup.h
• linux/clk.h
• linux/gpio/driver.h
• linux/io.h
• linux/ioport.h
• linux/module.h
• linux/mutex.h
• linux/of_device.h
• linux/of_irq.h
• linux/platform_device.h
• linux/pm_runtime.h
• linux/spinlock.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
• dt-bindings/pinctrl/renesas,r9a09g077-pinctrl.h
• ../core.h
• ../pinconf.h
• ../pinmux.h

Detected Declarations

• struct rzt2h_pinctrl_data
• struct rzt2h_pinctrl
• function rzt2h_drive_strength_ua_to_idx
• function rzt2h_drive_strength_idx_to_ua
• function rzt2h_pinctrl_drctl_rmwq
• function rzt2h_validate_pin
• function rzt2h_pinctrl_set_gpio_en
• function rzt2h_pinctrl_set_pfc_mode
• function rzt2h_pinctrl_set_mux
• function rzt2h_map_add_config
• function rzt2h_dt_subnode_to_map
• function of_property_for_each_string
• function scoped_guard
• function rzt2h_dt_free_map
• function rzt2h_dt_node_to_map
• function for_each_child_of_node_scoped
• function rzt2h_pinctrl_pinconf_get
• function rzt2h_pinctrl_pinconf_set
• function rzt2h_pinctrl_pinconf_group_get
• function rzt2h_pinctrl_pinconf_group_set
• function rzt2h_gpio_request
• function rzt2h_gpio_set_direction
• function rzt2h_gpio_get_direction
• function rzt2h_gpio_set
• function rzt2h_gpio_get
• function rzt2h_gpio_direction_input
• function rzt2h_gpio_direction_output
• function rzt2h_gpio_free
• function rzt2h_gpio_irq_disable
• function rzt2h_gpio_irq_enable
• function rzt2h_gpio_irq_set_wake
• function rzt2h_gpio_child_to_parent_hwirq
• function rzt2h_gpio_irq_domain_free
• function rzt2h_gpio_init_irq_valid_mask
• function rzt2h_gpio_register
• function rzt2h_pinctrl_register
• function rzt2h_pinctrl_cfg_regions
• function rzt2h_pinctrl_probe
• function rzt2h_pinctrl_suspend_noirq
• function rzt2h_pinctrl_init
• module init rzt2h_pinctrl_init

Annotated Snippet

core_initcall(rzt2h_pinctrl_init);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Thierry Bultel <thierry.bultel.yh@bp.renesas.com>");
MODULE_AUTHOR("Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>");
MODULE_DESCRIPTION("Pin and gpio controller driver for the RZ/T2H family");

Annotation

• Immediate include surface: `linux/array_size.h`, `linux/bitfield.h`, `linux/bitops.h`, `linux/bits.h`, `linux/cleanup.h`, `linux/clk.h`, `linux/gpio/driver.h`, `linux/io.h`.
• Detected declarations: `struct rzt2h_pinctrl_data`, `struct rzt2h_pinctrl`, `function rzt2h_drive_strength_ua_to_idx`, `function rzt2h_drive_strength_idx_to_ua`, `function rzt2h_pinctrl_drctl_rmwq`, `function rzt2h_validate_pin`, `function rzt2h_pinctrl_set_gpio_en`, `function rzt2h_pinctrl_set_pfc_mode`, `function rzt2h_pinctrl_set_mux`, `function rzt2h_map_add_config`.
• 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.