1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 // 3 // OWL factor clock driver 4 // 5 // Copyright (c) 2014 Actions Semi Inc. 6 // Author: David Liu <liuwei@actions-semi.com> 7 // 8 // Copyright (c) 2018 Linaro Ltd. 9 // Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> 10 11 #ifndef _OWL_FACTOR_H_ 12 #define _OWL_FACTOR_H_ 13 14 #include "owl-common.h" 15 16 struct clk_factor_table { 17 unsigned int val; 18 unsigned int mul; 19 unsigned int div; 20 }; 21 22 struct owl_factor_hw { 23 u32 reg; 24 u8 shift; 25 u8 width; 26 u8 fct_flags; 27 struct clk_factor_table *table; 28 }; 29 30 struct owl_factor { 31 struct owl_factor_hw factor_hw; 32 struct owl_clk_common common; 33 }; 34 35 #define OWL_FACTOR_HW(_reg, _shift, _width, _fct_flags, _table) \ 36 { \ 37 .reg = _reg, \ 38 .shift = _shift, \ 39 .width = _width, \ 40 .fct_flags = _fct_flags, \ 41 .table = _table, \ 42 } 43 44 #define OWL_FACTOR(_struct, _name, _parent, _reg, \ 45 _shift, _width, _table, _fct_flags, _flags) \ 46 struct owl_factor _struct = { \ 47 .factor_hw = OWL_FACTOR_HW(_reg, _shift, \ 48 _width, _fct_flags, _table), \ 49 .common = { \ 50 .regmap = NULL, \ 51 .hw.init = CLK_HW_INIT(_name, \ 52 _parent, \ 53 &owl_factor_ops, \ 54 _flags), \ 55 }, \ 56 } 57 58 #define div_mask(d) ((1 << ((d)->width)) - 1) 59 60 static inline struct owl_factor *hw_to_owl_factor(const struct clk_hw *hw) 61 { 62 struct owl_clk_common *common = hw_to_owl_clk_common(hw); 63 64 return container_of(common, struct owl_factor, common); 65 } 66 67 long owl_factor_helper_round_rate(struct owl_clk_common *common, 68 const struct owl_factor_hw *factor_hw, 69 unsigned long rate, 70 unsigned long *parent_rate); 71 72 unsigned long owl_factor_helper_recalc_rate(struct owl_clk_common *common, 73 const struct owl_factor_hw *factor_hw, 74 unsigned long parent_rate); 75 76 int owl_factor_helper_set_rate(const struct owl_clk_common *common, 77 const struct owl_factor_hw *factor_hw, 78 unsigned long rate, 79 unsigned long parent_rate); 80 81 extern const struct clk_ops owl_factor_ops; 82 83 #endif /* _OWL_FACTOR_H_ */ 84