/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2024 SpacemiT Technology Co. Ltd
 * Copyright (c) 2024-2025 Haylen Chu <heylenay@4d2.org>
 */

#ifndef _CCU_DDN_H_
#define _CCU_DDN_H_

#include <linux/bitops.h>
#include <linux/clk-provider.h>

#include "ccu_common.h"

struct ccu_ddn {
        struct ccu_common common;
        unsigned int num_mask;
        unsigned int num_shift;
        unsigned int den_mask;
        unsigned int den_shift;
        unsigned int pre_div;
};

#define CCU_DDN_INIT(_name, _parent, _flags) \
        CLK_HW_INIT_HW(#_name, &_parent.common.hw, &spacemit_ccu_ddn_ops, _flags)

#define CCU_DDN_DEFINE(_name, _parent, _reg_ctrl, _num_shift, _num_width,       \
                       _den_shift, _den_width, _pre_div, _flags)                \
static struct ccu_ddn _name = {                                                 \
        .common = {                                                             \
                .reg_ctrl       = _reg_ctrl,                                    \
                .hw.init        = CCU_DDN_INIT(_name, _parent, _flags),         \
        },                                                                      \
        .num_mask       = GENMASK(_num_shift + _num_width - 1, _num_shift),     \
        .num_shift      = _num_shift,                                           \
        .den_mask       = GENMASK(_den_shift + _den_width - 1, _den_shift),     \
        .den_shift      = _den_shift,                                           \
        .pre_div        = _pre_div,                                             \
}

static inline struct ccu_ddn *hw_to_ccu_ddn(struct clk_hw *hw)
{
        struct ccu_common *common = hw_to_ccu_common(hw);

        return container_of(common, struct ccu_ddn, common);
}

extern const struct clk_ops spacemit_ccu_ddn_ops;

#endif