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/* SPDX-License-Identifier: GPL-2.0+ */
//
// OWL factor 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_FACTOR_H_
#define _OWL_FACTOR_H_
#include "owl-common.h"
struct clk_factor_table {
unsigned int val;
unsigned int mul;
unsigned int div;
};
struct owl_factor_hw {
u32 reg;
u8 shift;
u8 width;
u8 fct_flags;
struct clk_factor_table *table;
};
struct owl_factor {
struct owl_factor_hw factor_hw;
struct owl_clk_common common;
};
#define OWL_FACTOR_HW(_reg, _shift, _width, _fct_flags, _table) \
{ \
.reg = _reg, \
.shift = _shift, \
.width = _width, \
.fct_flags = _fct_flags, \
.table = _table, \
}
#define OWL_FACTOR(_struct, _name, _parent, _reg, \
_shift, _width, _table, _fct_flags, _flags) \
struct owl_factor _struct = { \
.factor_hw = OWL_FACTOR_HW(_reg, _shift, \
_width, _fct_flags, _table), \
.common = { \
.regmap = NULL, \
.hw.init = CLK_HW_INIT(_name, \
_parent, \
&owl_factor_ops, \
_flags), \
}, \
}
#define div_mask(d) ((1 << ((d)->width)) - 1)
static inline struct owl_factor *hw_to_owl_factor(const struct clk_hw *hw)
{
struct owl_clk_common *common = hw_to_owl_clk_common(hw);
return container_of(common, struct owl_factor, common);
}
long owl_factor_helper_round_rate(struct owl_clk_common *common,
const struct owl_factor_hw *factor_hw,
unsigned long rate,
unsigned long *parent_rate);
unsigned long owl_factor_helper_recalc_rate(struct owl_clk_common *common,
const struct owl_factor_hw *factor_hw,
unsigned long parent_rate);
int owl_factor_helper_set_rate(const struct owl_clk_common *common,
const struct owl_factor_hw *factor_hw,
unsigned long rate,
unsigned long parent_rate);
extern const struct clk_ops owl_factor_ops;
#endif /* _OWL_FACTOR_H_ */
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