drivers/pinctrl/mediatek/pinctrl-mt6397.c

Source file repositories/reference/linux-study-clean/drivers/pinctrl/mediatek/pinctrl-mt6397.c

File Facts

System
Linux kernel
Corpus path
drivers/pinctrl/mediatek/pinctrl-mt6397.c
Extension
.c
Size
1634 bytes
Lines
62
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) 2015 MediaTek Inc.
 * Author: Hongzhou.Yang <hongzhou.yang@mediatek.com>
 */

#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinconf-generic.h>
#include <linux/mfd/mt6397/core.h>

#include "pinctrl-mtk-common.h"
#include "pinctrl-mtk-mt6397.h"

#define MT6397_PIN_REG_BASE  0xc000

static const struct mtk_pinctrl_devdata mt6397_pinctrl_data = {
	.pins = mtk_pins_mt6397,
	.npins = ARRAY_SIZE(mtk_pins_mt6397),
	.dir_offset = (MT6397_PIN_REG_BASE + 0x000),
	.ies_offset = MTK_PINCTRL_NOT_SUPPORT,
	.smt_offset = MTK_PINCTRL_NOT_SUPPORT,
	.pullen_offset = (MT6397_PIN_REG_BASE + 0x020),
	.pullsel_offset = (MT6397_PIN_REG_BASE + 0x040),
	.dout_offset = (MT6397_PIN_REG_BASE + 0x080),
	.din_offset = (MT6397_PIN_REG_BASE + 0x0a0),
	.pinmux_offset = (MT6397_PIN_REG_BASE + 0x0c0),
	.type1_start = 41,
	.type1_end = 41,
	.port_shf = 3,
	.port_mask = 0x3,
	.port_align = 2,
	.mode_mask = 0xf,
	.mode_per_reg = 5,
	.mode_shf = 4,
};

static int mt6397_pinctrl_probe(struct platform_device *pdev)
{
	struct mt6397_chip *mt6397;

	mt6397 = dev_get_drvdata(pdev->dev.parent);
	return mtk_pctrl_init(pdev, &mt6397_pinctrl_data, mt6397->regmap);
}

static const struct of_device_id mt6397_pctrl_match[] = {
	{ .compatible = "mediatek,mt6397-pinctrl", },
	{ }
};

static struct platform_driver mtk_pinctrl_driver = {
	.probe = mt6397_pinctrl_probe,
	.driver = {
		.name = "mediatek-mt6397-pinctrl",
		.of_match_table = mt6397_pctrl_match,
	},
};

builtin_platform_driver(mtk_pinctrl_driver);

Annotation

Implementation Notes