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