Manivannan Sadhasivam | e10e291 | 2018-03-26 23:09:00 +0530 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | // |
| 3 | // OWL divider 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_DIVIDER_H_ |
| 12 | #define _OWL_DIVIDER_H_ |
| 13 | |
| 14 | #include "owl-common.h" |
| 15 | |
| 16 | struct owl_divider_hw { |
| 17 | u32 reg; |
| 18 | u8 shift; |
| 19 | u8 width; |
| 20 | u8 div_flags; |
| 21 | struct clk_div_table *table; |
| 22 | }; |
| 23 | |
| 24 | struct owl_divider { |
| 25 | struct owl_divider_hw div_hw; |
| 26 | struct owl_clk_common common; |
| 27 | }; |
| 28 | |
| 29 | #define OWL_DIVIDER_HW(_reg, _shift, _width, _div_flags, _table) \ |
| 30 | { \ |
| 31 | .reg = _reg, \ |
| 32 | .shift = _shift, \ |
| 33 | .width = _width, \ |
| 34 | .div_flags = _div_flags, \ |
| 35 | .table = _table, \ |
| 36 | } |
| 37 | |
| 38 | #define OWL_DIVIDER(_struct, _name, _parent, _reg, \ |
| 39 | _shift, _width, _table, _div_flags, _flags) \ |
| 40 | struct owl_divider _struct = { \ |
| 41 | .div_hw = OWL_DIVIDER_HW(_reg, _shift, _width, \ |
| 42 | _div_flags, _table), \ |
| 43 | .common = { \ |
| 44 | .regmap = NULL, \ |
| 45 | .hw.init = CLK_HW_INIT(_name, \ |
| 46 | _parent, \ |
| 47 | &owl_divider_ops, \ |
| 48 | _flags), \ |
| 49 | }, \ |
| 50 | } |
| 51 | |
| 52 | static inline struct owl_divider *hw_to_owl_divider(const struct clk_hw *hw) |
| 53 | { |
| 54 | struct owl_clk_common *common = hw_to_owl_clk_common(hw); |
| 55 | |
| 56 | return container_of(common, struct owl_divider, common); |
| 57 | } |
| 58 | |
| 59 | long owl_divider_helper_round_rate(struct owl_clk_common *common, |
| 60 | const struct owl_divider_hw *div_hw, |
| 61 | unsigned long rate, |
| 62 | unsigned long *parent_rate); |
| 63 | |
| 64 | unsigned long owl_divider_helper_recalc_rate(struct owl_clk_common *common, |
| 65 | const struct owl_divider_hw *div_hw, |
| 66 | unsigned long parent_rate); |
| 67 | |
| 68 | int owl_divider_helper_set_rate(const struct owl_clk_common *common, |
| 69 | const struct owl_divider_hw *div_hw, |
| 70 | unsigned long rate, |
| 71 | unsigned long parent_rate); |
| 72 | |
| 73 | extern const struct clk_ops owl_divider_ops; |
| 74 | |
| 75 | #endif /* _OWL_DIVIDER_H_ */ |