drivers/clk/mediatek/clk-mt8188-imp_iic_wrap.c

Source file repositories/reference/linux-study-clean/drivers/clk/mediatek/clk-mt8188-imp_iic_wrap.c

File Facts

System
Linux kernel
Corpus path
drivers/clk/mediatek/clk-mt8188-imp_iic_wrap.c
Extension
.c
Size
2758 bytes
Lines
85
Domain
Driver Families
Bucket
drivers/clk
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) 2022 MediaTek Inc.
 * Author: Garmin Chang <garmin.chang@mediatek.com>
 */

#include <linux/clk-provider.h>
#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>

#include <dt-bindings/clock/mediatek,mt8188-clk.h>

#include "clk-gate.h"
#include "clk-mtk.h"

static const struct mtk_gate_regs imp_iic_wrap_cg_regs = {
	.set_ofs = 0xe08,
	.clr_ofs = 0xe04,
	.sta_ofs = 0xe00,
};

#define GATE_IMP_IIC_WRAP(_id, _name, _parent, _shift)			\
	GATE_MTK_FLAGS(_id, _name, _parent, &imp_iic_wrap_cg_regs, _shift,			\
		&mtk_clk_gate_ops_setclr, CLK_OPS_PARENT_ENABLE)

static const struct mtk_gate imp_iic_wrap_c_clks[] = {
	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_C_AP_CLOCK_I2C0,
			  "imp_iic_wrap_c_ap_clock_i2c0", "top_i2c", 0),
	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_C_AP_CLOCK_I2C2,
			  "imp_iic_wrap_c_ap_clock_i2c2", "top_i2c", 1),
	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_C_AP_CLOCK_I2C3,
			  "imp_iic_wrap_c_ap_clock_i2c3", "top_i2c", 2),
};

static const struct mtk_gate imp_iic_wrap_w_clks[] = {
	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_W_AP_CLOCK_I2C1,
			  "imp_iic_wrap_w_ap_clock_i2c1", "top_i2c", 0),
	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_W_AP_CLOCK_I2C4,
			  "imp_iic_wrap_w_ap_clock_i2c4", "top_i2c", 1),
};

static const struct mtk_gate imp_iic_wrap_en_clks[] = {
	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_EN_AP_CLOCK_I2C5,
			  "imp_iic_wrap_en_ap_clock_i2c5", "top_i2c", 0),
	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_EN_AP_CLOCK_I2C6,
			  "imp_iic_wrap_en_ap_clock_i2c6", "top_i2c", 1),
};

static const struct mtk_clk_desc imp_iic_wrap_c_desc = {
	.clks = imp_iic_wrap_c_clks,
	.num_clks = ARRAY_SIZE(imp_iic_wrap_c_clks),
};

static const struct mtk_clk_desc imp_iic_wrap_w_desc = {
	.clks = imp_iic_wrap_w_clks,
	.num_clks = ARRAY_SIZE(imp_iic_wrap_w_clks),
};

static const struct mtk_clk_desc imp_iic_wrap_en_desc = {
	.clks = imp_iic_wrap_en_clks,
	.num_clks = ARRAY_SIZE(imp_iic_wrap_en_clks),
};

static const struct of_device_id of_match_clk_mt8188_imp_iic_wrap[] = {
	{ .compatible = "mediatek,mt8188-imp-iic-wrap-c", .data = &imp_iic_wrap_c_desc },
	{ .compatible = "mediatek,mt8188-imp-iic-wrap-w", .data = &imp_iic_wrap_w_desc },
	{ .compatible = "mediatek,mt8188-imp-iic-wrap-en", .data = &imp_iic_wrap_en_desc },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, of_match_clk_mt8188_imp_iic_wrap);

static struct platform_driver clk_mt8188_imp_iic_wrap_drv = {
	.probe = mtk_clk_simple_probe,
	.remove = mtk_clk_simple_remove,
	.driver = {
		.name = "clk-mt8188-imp_iic_wrap",
		.of_match_table = of_match_clk_mt8188_imp_iic_wrap,
	},
};

module_platform_driver(clk_mt8188_imp_iic_wrap_drv);

MODULE_DESCRIPTION("MediaTek MT8188 I2C Wrapper clocks driver");
MODULE_LICENSE("GPL");

Annotation

Implementation Notes