drivers/clk/mediatek/clk-mt8196-imp_iic_wrap.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2025 MediaTek Inc.
 *                    Guangjie Song <guangjie.song@mediatek.com>
 * Copyright (c) 2025 Collabora Ltd.
 *                    Laura Nao <laura.nao@collabora.com>
 */
#include <dt-bindings/clock/mediatek,mt8196-clock.h>

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

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

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

#define GATE_IMP(_id, _name, _parent, _shift) {	\
		.id = _id,				\
		.name = _name,				\
		.parent_name = _parent,			\
		.regs = &imp_cg_regs,			\
		.shift = _shift,			\
		.flags = CLK_OPS_PARENT_ENABLE,		\
		.ops = &mtk_clk_gate_ops_setclr,	\
	}

static const struct mtk_gate impc_clks[] = {
	GATE_IMP(CLK_IMPC_I2C11, "impc_i2c11", "i2c_p", 0),
	GATE_IMP(CLK_IMPC_I2C12, "impc_i2c12", "i2c_p", 1),
	GATE_IMP(CLK_IMPC_I2C13, "impc_i2c13", "i2c_p", 2),
	GATE_IMP(CLK_IMPC_I2C14, "impc_i2c14", "i2c_p", 3),
};

static const struct mtk_clk_desc impc_mcd = {
	.clks = impc_clks,
	.num_clks = ARRAY_SIZE(impc_clks),
};

static const struct mtk_gate impe_clks[] = {
	GATE_IMP(CLK_IMPE_I2C5, "impe_i2c5", "i2c_east", 0),
};

static const struct mtk_clk_desc impe_mcd = {
	.clks = impe_clks,
	.num_clks = ARRAY_SIZE(impe_clks),
};

static const struct mtk_gate_regs impn_hwv_regs = {
	.set_ofs = 0x0000,
	.clr_ofs = 0x0004,
	.sta_ofs = 0x2c00,
};

#define GATE_HWV_IMPN(_id, _name, _parent, _shift) {	\
		.id = _id,				\
		.name = _name,				\
		.parent_name = _parent,			\
		.regs = &imp_cg_regs,			\
		.hwv_regs = &impn_hwv_regs,		\
		.shift = _shift,			\
		.ops = &mtk_clk_gate_hwv_ops_setclr,	\
		.flags = CLK_OPS_PARENT_ENABLE,		\
	}

static const struct mtk_gate impn_clks[] = {
	GATE_IMP(CLK_IMPN_I2C1, "impn_i2c1", "i2c_north", 0),
	GATE_IMP(CLK_IMPN_I2C2, "impn_i2c2", "i2c_north", 1),
	GATE_IMP(CLK_IMPN_I2C4, "impn_i2c4", "i2c_north", 2),
	GATE_HWV_IMPN(CLK_IMPN_I2C7, "impn_i2c7", "i2c_north", 3),
	GATE_IMP(CLK_IMPN_I2C8, "impn_i2c8", "i2c_north", 4),
	GATE_IMP(CLK_IMPN_I2C9, "impn_i2c9", "i2c_north", 5),
};

static const struct mtk_clk_desc impn_mcd = {
	.clks = impn_clks,
	.num_clks = ARRAY_SIZE(impn_clks),
};

static const struct mtk_gate impw_clks[] = {
	GATE_IMP(CLK_IMPW_I2C0, "impw_i2c0", "i2c_west", 0),
	GATE_IMP(CLK_IMPW_I2C3, "impw_i2c3", "i2c_west", 1),
	GATE_IMP(CLK_IMPW_I2C6, "impw_i2c6", "i2c_west", 2),
	GATE_IMP(CLK_IMPW_I2C10, "impw_i2c10", "i2c_west", 3),
};

static const struct mtk_clk_desc impw_mcd = {
	.clks = impw_clks,
	.num_clks = ARRAY_SIZE(impw_clks),
};

static const struct of_device_id of_match_clk_mt8196_imp_iic_wrap[] = {
	{ .compatible = "mediatek,mt8196-imp-iic-wrap-c", .data = &impc_mcd },
	{ .compatible = "mediatek,mt8196-imp-iic-wrap-e", .data = &impe_mcd },
	{ .compatible = "mediatek,mt8196-imp-iic-wrap-n", .data = &impn_mcd },
	{ .compatible = "mediatek,mt8196-imp-iic-wrap-w", .data = &impw_mcd },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, of_match_clk_mt8196_imp_iic_wrap);

static struct platform_driver clk_mt8196_imp_iic_wrap_drv = {
	.probe = mtk_clk_simple_probe,
	.remove = mtk_clk_simple_remove,
	.driver = {
		.name = "clk-mt8196-imp_iic_wrap",
		.of_match_table = of_match_clk_mt8196_imp_iic_wrap,
	},
};
module_platform_driver(clk_mt8196_imp_iic_wrap_drv);

MODULE_DESCRIPTION("MediaTek MT8196 I2C Wrapper clocks driver");
MODULE_LICENSE("GPL");