// SPDX-License-Identifier: GPL-2.0-only
//
// Copyright (c) 2022 MediaTek Inc.
// Author: Chun-Jie Chen <chun-jie.chen@mediatek.com>

#include <linux/clk-provider.h>
#include <linux/platform_device.h>
#include <dt-bindings/clock/mt8186-clk.h>

#include "clk-mtk.h"

static const char * const mcu_armpll_ll_parents[] = {
        "clk26m",
        "armpll_ll",
        "mainpll",
        "univpll_d2"
};

static const char * const mcu_armpll_bl_parents[] = {
        "clk26m",
        "armpll_bl",
        "mainpll",
        "univpll_d2"
};

static const char * const mcu_armpll_bus_parents[] = {
        "clk26m",
        "ccipll",
        "mainpll",
        "univpll_d2"
};

/*
 * We only configure the CPU muxes when adjust CPU frequency in MediaTek CPUFreq Driver.
 * Other fields like divider always keep the same value. (set once in bootloader)
 */
static struct mtk_composite mcu_muxes[] = {
        /* CPU_PLLDIV_CFG0 */
        MUX(CLK_MCU_ARMPLL_LL_SEL, "mcu_armpll_ll_sel", mcu_armpll_ll_parents, 0x2A0, 9, 2),
        /* CPU_PLLDIV_CFG1 */
        MUX(CLK_MCU_ARMPLL_BL_SEL, "mcu_armpll_bl_sel", mcu_armpll_bl_parents, 0x2A4, 9, 2),
        /* BUS_PLLDIV_CFG */
        MUX(CLK_MCU_ARMPLL_BUS_SEL, "mcu_armpll_bus_sel", mcu_armpll_bus_parents, 0x2E0, 9, 2),
};

static const struct mtk_clk_desc mcu_desc = {
        .composite_clks = mcu_muxes,
        .num_composite_clks = ARRAY_SIZE(mcu_muxes),
};

static const struct of_device_id of_match_clk_mt8186_mcu[] = {
        { .compatible = "mediatek,mt8186-mcusys", .data = &mcu_desc },
        { /* sentinel */}
};
MODULE_DEVICE_TABLE(of, of_match_clk_mt8186_mcu);

static struct platform_driver clk_mt8186_mcu_drv = {
        .driver = {
                .name = "clk-mt8186-mcu",
                .of_match_table = of_match_clk_mt8186_mcu,
        },
        .probe = mtk_clk_simple_probe,
        .remove = mtk_clk_simple_remove,
};
module_platform_driver(clk_mt8186_mcu_drv);

MODULE_DESCRIPTION("MediaTek MT8186 mcusys clocks driver");
MODULE_LICENSE("GPL");