Quelle  owl-divider.h   Sprache: C

/* 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(const struct clk_hw *hw)
{
 struct owl_clk_common *common = hw_to_owl_clk_common(hw);

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

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

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_ */