mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-17 03:59:01 +07:00
4bb78fc974
Add support for Actions Semi factor clock together with helper functions to be used in composite clock. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
// 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_ */
|