/* SPDX-License-Identifier: GPL-2.0+ */
//
// OWL gate 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_GATE_H_
#define _OWL_GATE_H_

#include "owl-common.h"

struct owl_gate_hw {
        u32                     reg;
        u8                      bit_idx;
        u8                      gate_flags;
};

struct owl_gate {
        struct owl_gate_hw      gate_hw;
        struct owl_clk_common   common;
};

#define OWL_GATE_HW(_reg, _bit_idx, _gate_flags)        \
        {                                               \
                .reg            = _reg,                 \
                .bit_idx        = _bit_idx,             \
                .gate_flags     = _gate_flags,          \
        }

#define OWL_GATE(_struct, _name, _parent, _reg,                         \
                _bit_idx, _gate_flags, _flags)                          \
        struct owl_gate _struct = {                                     \
                .gate_hw = OWL_GATE_HW(_reg, _bit_idx, _gate_flags),    \
                .common = {                                             \
                        .regmap         = NULL,                         \
                        .hw.init        = CLK_HW_INIT(_name,            \
                                                      _parent,          \
                                                      &owl_gate_ops,    \
                                                      _flags),          \
                }                                                       \
        }                                                               \

#define OWL_GATE_NO_PARENT(_struct, _name, _reg,                        \
                _bit_idx, _gate_flags, _flags)                          \
        struct owl_gate _struct = {                                     \
                .gate_hw = OWL_GATE_HW(_reg, _bit_idx, _gate_flags),    \
                .common = {                                             \
                        .regmap         = NULL,                         \
                        .hw.init        = CLK_HW_INIT_NO_PARENT(_name,  \
                                                      &owl_gate_ops,    \
                                                      _flags),          \
                },                                                      \
        }                                                               \

static inline struct owl_gate *hw_to_owl_gate(struct clk_hw *hw)
{
        struct owl_clk_common *common = hw_to_owl_clk_common(hw);

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

void owl_gate_set(const struct owl_clk_common *common,
                 const struct owl_gate_hw *gate_hw, bool enable);
int owl_gate_clk_is_enabled(const struct owl_clk_common *common,
                   const struct owl_gate_hw *gate_hw);

extern const struct clk_ops owl_gate_ops;

#endif /* _OWL_GATE_H_ */