drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c

Source file repositories/reference/linux-study-clean/drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c

File Facts

System: Linux kernel
Corpus path: drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c
Extension: .c
Size: 40022 bytes
Lines: 1002
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/init.h
linux/platform_device.h
linux/of.h
linux/pinctrl/pinctrl.h
pinctrl-sunxi.h

Detected Declarations

function sun6i_a31_pinctrl_probe

Annotated Snippet

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

#include "pinctrl-sunxi.h"

#define PINCTRL_SUN6I_A31	BIT(0)
#define PINCTRL_SUN6I_A31S	BIT(1)

static const struct sunxi_desc_pin sun6i_a31_pins[] = {
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 0),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "gmac"),		/* TXD0 */
		  SUNXI_FUNCTION_VARIANT(0x3, "lcd1",
					 PINCTRL_SUN6I_A31),	/* D0 */
		  SUNXI_FUNCTION(0x4, "uart1"),		/* DTR */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 0)),	/* PA_EINT0 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 1),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "gmac"),		/* TXD1 */
		  SUNXI_FUNCTION_VARIANT(0x3, "lcd1",
					 PINCTRL_SUN6I_A31),	/* D1 */
		  SUNXI_FUNCTION(0x4, "uart1"),		/* DSR */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 1)),	/* PA_EINT1 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 2),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "gmac"),		/* TXD2 */
		  SUNXI_FUNCTION_VARIANT(0x3, "lcd1",
					 PINCTRL_SUN6I_A31),	/* D2 */
		  SUNXI_FUNCTION(0x4, "uart1"),		/* DCD */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 2)),	/* PA_EINT2 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 3),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "gmac"),		/* TXD3 */
		  SUNXI_FUNCTION_VARIANT(0x3, "lcd1",
					 PINCTRL_SUN6I_A31),	/* D3 */
		  SUNXI_FUNCTION(0x4, "uart1"),		/* RING */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 3)),	/* PA_EINT3 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 4),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "gmac"),		/* TXD4 */
		  SUNXI_FUNCTION_VARIANT(0x3, "lcd1",
					 PINCTRL_SUN6I_A31),	/* D4 */
		  SUNXI_FUNCTION(0x4, "uart1"),		/* TX */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 4)),	/* PA_EINT4 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 5),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "gmac"),		/* TXD5 */
		  SUNXI_FUNCTION_VARIANT(0x3, "lcd1",
					 PINCTRL_SUN6I_A31),	/* D5 */
		  SUNXI_FUNCTION(0x4, "uart1"),		/* RX */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 5)),	/* PA_EINT5 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 6),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "gmac"),		/* TXD6 */
		  SUNXI_FUNCTION_VARIANT(0x3, "lcd1",
					 PINCTRL_SUN6I_A31),	/* D6 */
		  SUNXI_FUNCTION(0x4, "uart1"),		/* RTS */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 6)),	/* PA_EINT6 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 7),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "gmac"),		/* TXD7 */
		  SUNXI_FUNCTION_VARIANT(0x3, "lcd1",
					 PINCTRL_SUN6I_A31),	/* D7 */
		  SUNXI_FUNCTION(0x4, "uart1"),		/* CTS */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 7)),	/* PA_EINT7 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 8),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "gmac"),		/* TXCLK */
		  SUNXI_FUNCTION_VARIANT(0x3, "lcd1",
					 PINCTRL_SUN6I_A31),	/* D8 */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 8)),	/* PA_EINT8 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 9),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "gmac"),		/* TXEN */
		  SUNXI_FUNCTION_VARIANT(0x3, "lcd1",
					 PINCTRL_SUN6I_A31),	/* D9 */
		  SUNXI_FUNCTION(0x4, "mmc3"),		/* CMD */
		  SUNXI_FUNCTION(0x5, "mmc2"),		/* CMD */

Annotation

Immediate include surface: `linux/init.h`, `linux/platform_device.h`, `linux/of.h`, `linux/pinctrl/pinctrl.h`, `pinctrl-sunxi.h`.
Detected declarations: `function sun6i_a31_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.