/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Toshiba Visconti clock controller
 *
 * Copyright (c) 2021 TOSHIBA CORPORATION
 * Copyright (c) 2021 Toshiba Electronic Devices & Storage Corporation
 *
 * Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
 */

#ifndef _VISCONTI_CLKC_H_
#define _VISCONTI_CLKC_H_

#include <linux/mfd/syscon.h>
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/delay.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/io.h>
#include <linux/spinlock.h>

#include "reset.h"

struct visconti_clk_provider {
        struct device           *dev;
        struct regmap           *regmap;
        struct clk_hw_onecell_data clk_data;
};

struct visconti_clk_gate_table {
        unsigned int    id;
        const char      *name;
        const struct clk_parent_data *parent_data;
        u8              num_parents;
        u8              flags;
        u32             ckon_offset;
        u32             ckoff_offset;
        u8              ck_idx;
        unsigned int    div;
        u8              rs_id;
};

struct visconti_fixed_clk {
        unsigned int    id;
        const char      *name;
        const char      *parent;
        unsigned long   flag;
        unsigned int    mult;
        unsigned int    div;
};

struct visconti_clk_gate {
        struct clk_hw   hw;
        struct regmap   *regmap;
        u32             ckon_offset;
        u32             ckoff_offset;
        u8              ck_idx;
        u8              flags;
        u32             rson_offset;
        u32             rsoff_offset;
        u8              rs_idx;
        spinlock_t      *lock;
};

struct visconti_clk_provider *visconti_init_clk(struct device *dev,
                                                struct regmap *regmap,
                                                unsigned long nr_clks);
int visconti_clk_register_gates(struct visconti_clk_provider *data,
                                 const struct visconti_clk_gate_table *clks,
                                 int num_gate,
                                 const struct visconti_reset_data *reset,
                                 spinlock_t *lock);

#define NO_RESET 0xFF

#endif /* _VISCONTI_CLKC_H_ */