drivers/clk/mediatek/clk-mt6779-cam.c

Source file repositories/reference/linux-study-clean/drivers/clk/mediatek/clk-mt6779-cam.c

File Facts

System
Linux kernel
Corpus path
drivers/clk/mediatek/clk-mt6779-cam.c
Extension
.c
Size
2008 bytes
Lines
68
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
/*
 * Copyright (c) 2019 MediaTek Inc.
 * Author: Wendell Lin <wendell.lin@mediatek.com>
 */

#include <linux/module.h>
#include <linux/clk-provider.h>
#include <linux/platform_device.h>
#include <dt-bindings/clock/mt6779-clk.h>

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

static const struct mtk_gate_regs cam_cg_regs = {
	.set_ofs = 0x0004,
	.clr_ofs = 0x0008,
	.sta_ofs = 0x0000,
};

#define GATE_CAM(_id, _name, _parent, _shift)			\
	GATE_MTK(_id, _name, _parent, &cam_cg_regs, _shift,	\
		&mtk_clk_gate_ops_setclr)

static const struct mtk_gate cam_clks[] = {
	GATE_CAM(CLK_CAM_LARB10, "camsys_larb10", "cam_sel", 0),
	GATE_CAM(CLK_CAM_DFP_VAD, "camsys_dfp_vad", "cam_sel", 1),
	GATE_CAM(CLK_CAM_LARB11, "camsys_larb11", "cam_sel", 2),
	GATE_CAM(CLK_CAM_LARB9, "camsys_larb9", "cam_sel", 3),
	GATE_CAM(CLK_CAM_CAM, "camsys_cam", "cam_sel", 6),
	GATE_CAM(CLK_CAM_CAMTG, "camsys_camtg", "cam_sel", 7),
	GATE_CAM(CLK_CAM_SENINF, "camsys_seninf", "cam_sel", 8),
	GATE_CAM(CLK_CAM_CAMSV0, "camsys_camsv0", "cam_sel", 9),
	GATE_CAM(CLK_CAM_CAMSV1, "camsys_camsv1", "cam_sel", 10),
	GATE_CAM(CLK_CAM_CAMSV2, "camsys_camsv2", "cam_sel", 11),
	GATE_CAM(CLK_CAM_CAMSV3, "camsys_camsv3", "cam_sel", 12),
	GATE_CAM(CLK_CAM_CCU, "camsys_ccu", "cam_sel", 13),
	GATE_CAM(CLK_CAM_FAKE_ENG, "camsys_fake_eng", "cam_sel", 14),
};

static const struct mtk_clk_desc cam_desc = {
	.clks = cam_clks,
	.num_clks = ARRAY_SIZE(cam_clks),
};

static const struct of_device_id of_match_clk_mt6779_cam[] = {
	{
		.compatible = "mediatek,mt6779-camsys",
		.data = &cam_desc,
	}, {
		/* sentinel */
	}
};
MODULE_DEVICE_TABLE(of, of_match_clk_mt6779_cam);

static struct platform_driver clk_mt6779_cam_drv = {
	.probe = mtk_clk_simple_probe,
	.remove = mtk_clk_simple_remove,
	.driver = {
		.name = "clk-mt6779-cam",
		.of_match_table = of_match_clk_mt6779_cam,
	},
};
module_platform_driver(clk_mt6779_cam_drv);

MODULE_DESCRIPTION("MediaTek MT6779 Camera clocks driver");
MODULE_LICENSE("GPL");

Annotation

Implementation Notes