/* SPDX-License-Identifier: GPL-2.0+ */
//
// OWL divider clock driver
//
// Copyright (c) 2014 Actions Semi Inc.
// Author: David Liu <liuwei@actions-semi.com>
//
// Copyright (c) 2018 Linaro Ltd.
// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

#ifndef _OWL_DIVIDER_H_
#define _OWL_DIVIDER_H_

#include "owl-common.h"

struct owl_divider_hw {
        u32                     reg;
        u8                      shift;
        u8                      width;
        u8                      div_flags;
        struct clk_div_table    *table;
};

struct owl_divider {
        struct owl_divider_hw   div_hw;
        struct owl_clk_common   common;
};

#define OWL_DIVIDER_HW(_reg, _shift, _width, _div_flags, _table)        \
        {                                                               \
                .reg            = _reg,                                 \
                .shift          = _shift,                               \
                .width          = _width,                               \
                .div_flags      = _div_flags,                           \
                .table          = _table,                               \
        }

#define OWL_DIVIDER(_struct, _name, _parent, _reg,                      \
                    _shift, _width, _table, _div_flags, _flags)         \
        struct owl_divider _struct = {                                  \
                .div_hw = OWL_DIVIDER_HW(_reg, _shift, _width,          \
                                         _div_flags, _table),           \
                .common = {                                             \
                        .regmap         = NULL,                         \
                        .hw.init        = CLK_HW_INIT(_name,            \
                                                      _parent,          \
                                                      &owl_divider_ops, \
                                                      _flags),          \
                },                                                      \
        }

static inline struct owl_divider *hw_to_owl_divider(struct clk_hw *hw)
{
        struct owl_clk_common *common = hw_to_owl_clk_common(hw);

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

unsigned long owl_divider_helper_recalc_rate(struct owl_clk_common *common,
                                         const struct owl_divider_hw *div_hw,
                                         unsigned long parent_rate);

int owl_divider_helper_set_rate(const struct owl_clk_common *common,
                                const struct owl_divider_hw *div_hw,
                                unsigned long rate,
                                unsigned long parent_rate);

extern const struct clk_ops owl_divider_ops;

#endif /* _OWL_DIVIDER_H_ */