drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c

Source file repositories/reference/linux-study-clean/drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c

File Facts

System: Linux kernel
Corpus path: drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c
Extension: .c
Size: 50883 bytes
Lines: 1330
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.
Touches IRQ or DMA behavior; this matters for the representative real-device path.
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 sun4i_a10_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_SUN4I_A10	BIT(0)
#define PINCTRL_SUN7I_A20	BIT(1)
#define PINCTRL_SUN8I_R40	BIT(2)

static const struct sunxi_desc_pin sun4i_a10_pins[] = {
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 0),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "emac"),		/* ERXD3 */
		  SUNXI_FUNCTION(0x3, "spi1"),		/* CS0 */
		  SUNXI_FUNCTION(0x4, "uart2"),		/* RTS */
		  SUNXI_FUNCTION_VARIANT(0x5, "gmac",	/* GRXD3 */
					 PINCTRL_SUN7I_A20 |
					 PINCTRL_SUN8I_R40)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 1),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "emac"),		/* ERXD2 */
		  SUNXI_FUNCTION(0x3, "spi1"),		/* CLK */
		  SUNXI_FUNCTION(0x4, "uart2"),		/* CTS */
		  SUNXI_FUNCTION_VARIANT(0x5, "gmac",	/* GRXD2 */
					 PINCTRL_SUN7I_A20 |
					 PINCTRL_SUN8I_R40)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 2),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "emac"),		/* ERXD1 */
		  SUNXI_FUNCTION(0x3, "spi1"),		/* MOSI */
		  SUNXI_FUNCTION(0x4, "uart2"),		/* TX */
		  SUNXI_FUNCTION_VARIANT(0x5, "gmac",	/* GRXD1 */
					 PINCTRL_SUN7I_A20 |
					 PINCTRL_SUN8I_R40)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 3),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "emac"),		/* ERXD0 */
		  SUNXI_FUNCTION(0x3, "spi1"),		/* MISO */
		  SUNXI_FUNCTION(0x4, "uart2"),		/* RX */
		  SUNXI_FUNCTION_VARIANT(0x5, "gmac",	/* GRXD0 */
					 PINCTRL_SUN7I_A20 |
					 PINCTRL_SUN8I_R40)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 4),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "emac"),		/* ETXD3 */
		  SUNXI_FUNCTION(0x3, "spi1"),		/* CS1 */
		  SUNXI_FUNCTION_VARIANT(0x5, "gmac",	/* GTXD3 */
					 PINCTRL_SUN7I_A20 |
					 PINCTRL_SUN8I_R40)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 5),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "emac"),		/* ETXD2 */
		  SUNXI_FUNCTION(0x3, "spi3"),		/* CS0 */
		  SUNXI_FUNCTION_VARIANT(0x5, "gmac",	/* GTXD2 */
					 PINCTRL_SUN7I_A20 |
					 PINCTRL_SUN8I_R40)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 6),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "emac"),		/* ETXD1 */
		  SUNXI_FUNCTION(0x3, "spi3"),		/* CLK */
		  SUNXI_FUNCTION_VARIANT(0x5, "gmac",	/* GTXD1 */
					 PINCTRL_SUN7I_A20 |
					 PINCTRL_SUN8I_R40)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 7),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "emac"),		/* ETXD0 */
		  SUNXI_FUNCTION(0x3, "spi3"),		/* MOSI */
		  SUNXI_FUNCTION_VARIANT(0x5, "gmac",	/* GTXD0 */
					 PINCTRL_SUN7I_A20 |
					 PINCTRL_SUN8I_R40)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 8),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "emac"),		/* ERXCK */
		  SUNXI_FUNCTION(0x3, "spi3"),		/* MISO */
		  SUNXI_FUNCTION_VARIANT(0x5, "gmac",	/* GRXCK */
					 PINCTRL_SUN7I_A20 |
					 PINCTRL_SUN8I_R40)),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 9),
		  SUNXI_FUNCTION(0x0, "gpio_in"),

Annotation

Immediate include surface: `linux/init.h`, `linux/platform_device.h`, `linux/of.h`, `linux/pinctrl/pinctrl.h`, `pinctrl-sunxi.h`.
Detected declarations: `function sun4i_a10_pinctrl_probe`.
Atlas domain: Driver Families / drivers/pinctrl.
Implementation status: source implementation candidate.
IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.