drivers/pinctrl/sunxi/pinctrl-sun50i-a100.c

Source file repositories/reference/linux-study-clean/drivers/pinctrl/sunxi/pinctrl-sun50i-a100.c

File Facts

System: Linux kernel
Corpus path: drivers/pinctrl/sunxi/pinctrl-sun50i-a100.c
Extension: .c
Size: 28161 bytes
Lines: 720
Domain: Driver Families
Bucket: drivers/pinctrl
Inferred role: Driver Families: implementation source
Status: source 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.
Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

linux/module.h
linux/of.h
linux/pinctrl/pinctrl.h
linux/platform_device.h
pinctrl-sunxi.h

Detected Declarations

function a100_pinctrl_probe

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2020 Yangtao Li <frank@allwinnertech.com>
 *
 * Based on:
 * huangshuosheng <huangshuosheng@allwinnertech.com>
 */

#include <linux/module.h>
#include <linux/of.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/platform_device.h>

#include "pinctrl-sunxi.h"

static const struct sunxi_desc_pin a100_pins[] = {
	SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 0),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "uart2"),		/* TX */
		  SUNXI_FUNCTION(0x3, "spi2"),		/* CS */
		  SUNXI_FUNCTION(0x4, "jtag"),		/* MS */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 0)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 1),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "uart2"),		/* RX */
		  SUNXI_FUNCTION(0x3, "spi2"),		/* CLK */
		  SUNXI_FUNCTION(0x4, "jtag"),		/* CK */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 1)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 2),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "uart2"),		/* RTS */
		  SUNXI_FUNCTION(0x3, "spi2"),		/* MOSI */
		  SUNXI_FUNCTION(0x4, "jtag"),		/* DO */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 2)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 3),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "uart2"),		/* CTS */
		  SUNXI_FUNCTION(0x3, "spi2"),		/* MISO */
		  SUNXI_FUNCTION(0x4, "jtag"),		/* DI */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 3)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 4),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "i2c1"),		/* SCK */
		  SUNXI_FUNCTION(0x3, "i2s0"),		/* MCLK */
		  SUNXI_FUNCTION(0x4, "jtag_gpu"),	/* MS_GPU */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 4)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 5),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "i2c1"),		/* SDA */
		  SUNXI_FUNCTION(0x3, "i2s0"),		/* BCLK */
		  SUNXI_FUNCTION(0x4, "jtag_gpu"),	/* CK_GPU */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 5)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 6),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x3, "i2s0"),		/* LRCK */
		  SUNXI_FUNCTION(0x4, "jtag_gpu"),	/* DO_GPU */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 6)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 7),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "spdif"),		/* DIN */
		  SUNXI_FUNCTION(0x3, "i2s0_dout0"),	/* DOUT0 */
		  SUNXI_FUNCTION(0x4, "i2s0_din1"),	/* DIN1 */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 7)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 8),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "spdif"),		/* DOUT */
		  SUNXI_FUNCTION(0x3, "i2s0_din0"),	/* DIN0 */
		  SUNXI_FUNCTION(0x4, "i2s0_dout1"),	/* DOUT1 */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 8)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 9),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "uart0"),		/* TX */
		  SUNXI_FUNCTION(0x3, "i2c0"),		/* SCK */
		  SUNXI_FUNCTION(0x4, "jtag_gpu"),	/* DI_GPU */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 9)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 10),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "uart0"),		/* RX */
		  SUNXI_FUNCTION(0x3, "i2c0"),		/* SDA */

Annotation

Immediate include surface: `linux/module.h`, `linux/of.h`, `linux/pinctrl/pinctrl.h`, `linux/platform_device.h`, `pinctrl-sunxi.h`.
Detected declarations: `function a100_pinctrl_probe`.
Atlas domain: Driver Families / drivers/pinctrl.
Implementation status: source 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.