drivers/pinctrl/qcom/pinctrl-sm8250.c

Source file repositories/reference/linux-study-clean/drivers/pinctrl/qcom/pinctrl-sm8250.c

File Facts

System
Linux kernel
Corpus path
drivers/pinctrl/qcom/pinctrl-sm8250.c
Extension
.c
Size
45514 bytes
Lines
1381
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.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
 */

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

#include "pinctrl-msm.h"

static const char * const sm8250_tiles[] = {
	"west",
	"south",
	"north",
};

enum {
	WEST,
	SOUTH,
	NORTH,
};

#define REG_SIZE 0x1000
#define PINGROUP(id, _tile, f1, f2, f3, f4, f5, f6, f7, f8, f9) \
	{						\
		.grp = PINCTRL_PINGROUP("gpio" #id, 	\
			gpio##id##_pins, 		\
			ARRAY_SIZE(gpio##id##_pins)),	\
		.funcs = (int[]){			\
			msm_mux_gpio, /* gpio mode */	\
			msm_mux_##f1,			\
			msm_mux_##f2,			\
			msm_mux_##f3,			\
			msm_mux_##f4,			\
			msm_mux_##f5,			\
			msm_mux_##f6,			\
			msm_mux_##f7,			\
			msm_mux_##f8,			\
			msm_mux_##f9			\
		},					\
		.nfuncs = 10,				\
		.ctl_reg = REG_SIZE * id,		\
		.io_reg = REG_SIZE * id + 0x4,		\
		.intr_cfg_reg = REG_SIZE * id + 0x8,	\
		.intr_status_reg = REG_SIZE * id + 0xc,	\
		.tile = _tile,				\
		.mux_bit = 2,				\
		.pull_bit = 0,				\
		.drv_bit = 6,				\
		.egpio_enable = 12,			\
		.egpio_present = 11,			\
		.oe_bit = 9,				\
		.in_bit = 0,				\
		.out_bit = 1,				\
		.intr_enable_bit = 0,			\
		.intr_status_bit = 0,			\
		.intr_target_bit = 5,			\
		.intr_target_kpss_val = 3,		\
		.intr_raw_status_bit = 4,		\
		.intr_polarity_bit = 1,			\
		.intr_detection_bit = 2,		\
		.intr_detection_width = 2,		\
	}

#define SDC_PINGROUP(pg_name, ctl, pull, drv)	\
	{						\
		.grp = PINCTRL_PINGROUP(#pg_name, 	\
			pg_name##_pins, 		\
			ARRAY_SIZE(pg_name##_pins)),	\
		.ctl_reg = ctl,				\
		.io_reg = 0,				\
		.intr_cfg_reg = 0,			\
		.intr_status_reg = 0,			\
		.tile = NORTH,				\
		.mux_bit = -1,				\
		.pull_bit = pull,			\
		.drv_bit = drv,				\
		.oe_bit = -1,				\
		.in_bit = -1,				\
		.out_bit = -1,				\
		.intr_enable_bit = -1,			\
		.intr_status_bit = -1,			\
		.intr_target_bit = -1,			\
		.intr_raw_status_bit = -1,		\
		.intr_polarity_bit = -1,		\
		.intr_detection_bit = -1,		\
		.intr_detection_width = -1,		\
	}

Annotation

Implementation Notes