1*ddd3e8b9SNishad Kamdar /* SPDX-License-Identifier: GPL-2.0+ */
24bb78fc9SManivannan Sadhasivam //
34bb78fc9SManivannan Sadhasivam // OWL factor clock driver
44bb78fc9SManivannan Sadhasivam //
54bb78fc9SManivannan Sadhasivam // Copyright (c) 2014 Actions Semi Inc.
64bb78fc9SManivannan Sadhasivam // Author: David Liu <liuwei@actions-semi.com>
74bb78fc9SManivannan Sadhasivam //
84bb78fc9SManivannan Sadhasivam // Copyright (c) 2018 Linaro Ltd.
94bb78fc9SManivannan Sadhasivam // Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
104bb78fc9SManivannan Sadhasivam
114bb78fc9SManivannan Sadhasivam #ifndef _OWL_FACTOR_H_
124bb78fc9SManivannan Sadhasivam #define _OWL_FACTOR_H_
134bb78fc9SManivannan Sadhasivam
144bb78fc9SManivannan Sadhasivam #include "owl-common.h"
154bb78fc9SManivannan Sadhasivam
164bb78fc9SManivannan Sadhasivam struct clk_factor_table {
174bb78fc9SManivannan Sadhasivam unsigned int val;
184bb78fc9SManivannan Sadhasivam unsigned int mul;
194bb78fc9SManivannan Sadhasivam unsigned int div;
204bb78fc9SManivannan Sadhasivam };
214bb78fc9SManivannan Sadhasivam
224bb78fc9SManivannan Sadhasivam struct owl_factor_hw {
234bb78fc9SManivannan Sadhasivam u32 reg;
244bb78fc9SManivannan Sadhasivam u8 shift;
254bb78fc9SManivannan Sadhasivam u8 width;
264bb78fc9SManivannan Sadhasivam u8 fct_flags;
274bb78fc9SManivannan Sadhasivam struct clk_factor_table *table;
284bb78fc9SManivannan Sadhasivam };
294bb78fc9SManivannan Sadhasivam
304bb78fc9SManivannan Sadhasivam struct owl_factor {
314bb78fc9SManivannan Sadhasivam struct owl_factor_hw factor_hw;
324bb78fc9SManivannan Sadhasivam struct owl_clk_common common;
334bb78fc9SManivannan Sadhasivam };
344bb78fc9SManivannan Sadhasivam
354bb78fc9SManivannan Sadhasivam #define OWL_FACTOR_HW(_reg, _shift, _width, _fct_flags, _table) \
364bb78fc9SManivannan Sadhasivam { \
374bb78fc9SManivannan Sadhasivam .reg = _reg, \
384bb78fc9SManivannan Sadhasivam .shift = _shift, \
394bb78fc9SManivannan Sadhasivam .width = _width, \
404bb78fc9SManivannan Sadhasivam .fct_flags = _fct_flags, \
414bb78fc9SManivannan Sadhasivam .table = _table, \
424bb78fc9SManivannan Sadhasivam }
434bb78fc9SManivannan Sadhasivam
444bb78fc9SManivannan Sadhasivam #define OWL_FACTOR(_struct, _name, _parent, _reg, \
454bb78fc9SManivannan Sadhasivam _shift, _width, _table, _fct_flags, _flags) \
464bb78fc9SManivannan Sadhasivam struct owl_factor _struct = { \
474bb78fc9SManivannan Sadhasivam .factor_hw = OWL_FACTOR_HW(_reg, _shift, \
484bb78fc9SManivannan Sadhasivam _width, _fct_flags, _table), \
494bb78fc9SManivannan Sadhasivam .common = { \
504bb78fc9SManivannan Sadhasivam .regmap = NULL, \
514bb78fc9SManivannan Sadhasivam .hw.init = CLK_HW_INIT(_name, \
524bb78fc9SManivannan Sadhasivam _parent, \
534bb78fc9SManivannan Sadhasivam &owl_factor_ops, \
544bb78fc9SManivannan Sadhasivam _flags), \
554bb78fc9SManivannan Sadhasivam }, \
564bb78fc9SManivannan Sadhasivam }
574bb78fc9SManivannan Sadhasivam
584bb78fc9SManivannan Sadhasivam #define div_mask(d) ((1 << ((d)->width)) - 1)
594bb78fc9SManivannan Sadhasivam
hw_to_owl_factor(const struct clk_hw * hw)604bb78fc9SManivannan Sadhasivam static inline struct owl_factor *hw_to_owl_factor(const struct clk_hw *hw)
614bb78fc9SManivannan Sadhasivam {
624bb78fc9SManivannan Sadhasivam struct owl_clk_common *common = hw_to_owl_clk_common(hw);
634bb78fc9SManivannan Sadhasivam
644bb78fc9SManivannan Sadhasivam return container_of(common, struct owl_factor, common);
654bb78fc9SManivannan Sadhasivam }
664bb78fc9SManivannan Sadhasivam
674bb78fc9SManivannan Sadhasivam long owl_factor_helper_round_rate(struct owl_clk_common *common,
684bb78fc9SManivannan Sadhasivam const struct owl_factor_hw *factor_hw,
694bb78fc9SManivannan Sadhasivam unsigned long rate,
704bb78fc9SManivannan Sadhasivam unsigned long *parent_rate);
714bb78fc9SManivannan Sadhasivam
724bb78fc9SManivannan Sadhasivam unsigned long owl_factor_helper_recalc_rate(struct owl_clk_common *common,
734bb78fc9SManivannan Sadhasivam const struct owl_factor_hw *factor_hw,
744bb78fc9SManivannan Sadhasivam unsigned long parent_rate);
754bb78fc9SManivannan Sadhasivam
764bb78fc9SManivannan Sadhasivam int owl_factor_helper_set_rate(const struct owl_clk_common *common,
774bb78fc9SManivannan Sadhasivam const struct owl_factor_hw *factor_hw,
784bb78fc9SManivannan Sadhasivam unsigned long rate,
794bb78fc9SManivannan Sadhasivam unsigned long parent_rate);
804bb78fc9SManivannan Sadhasivam
814bb78fc9SManivannan Sadhasivam extern const struct clk_ops owl_factor_ops;
824bb78fc9SManivannan Sadhasivam
834bb78fc9SManivannan Sadhasivam #endif /* _OWL_FACTOR_H_ */
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