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

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

File Facts

System
Linux kernel
Corpus path
drivers/clk/mediatek/clk-mt8188-ccu.c
Extension
.c
Size
1396 bytes
Lines
52
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 <dt-bindings/clock/mediatek,mt8188-clk.h>
#include <linux/clk-provider.h>
#include <linux/platform_device.h>

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

static const struct mtk_gate_regs ccu_cg_regs = {
	.set_ofs = 0x4,
	.clr_ofs = 0x8,
	.sta_ofs = 0x0,
};

#define GATE_CCU(_id, _name, _parent, _shift)			\
	GATE_MTK(_id, _name, _parent, &ccu_cg_regs, _shift, &mtk_clk_gate_ops_setclr)

static const struct mtk_gate ccu_clks[] = {
	GATE_CCU(CLK_CCU_LARB27, "ccu_larb27", "top_ccu", 0),
	GATE_CCU(CLK_CCU_AHB, "ccu_ahb", "top_ccu", 1),
	GATE_CCU(CLK_CCU_CCU0, "ccu_ccu0", "top_ccu", 2),
};

static const struct mtk_clk_desc ccu_desc = {
	.clks = ccu_clks,
	.num_clks = ARRAY_SIZE(ccu_clks),
};

static const struct of_device_id of_match_clk_mt8188_ccu[] = {
	{ .compatible = "mediatek,mt8188-ccusys", .data = &ccu_desc },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, of_match_clk_mt8188_ccu);

static struct platform_driver clk_mt8188_ccu_drv = {
	.probe = mtk_clk_simple_probe,
	.remove = mtk_clk_simple_remove,
	.driver = {
		.name = "clk-mt8188-ccu",
		.of_match_table = of_match_clk_mt8188_ccu,
	},
};
module_platform_driver(clk_mt8188_ccu_drv);

MODULE_DESCRIPTION("MediaTek MT8188 Camera Control Unit clocks driver");
MODULE_LICENSE("GPL");

Annotation

Implementation Notes