1 // SPDX-License-Identifier: GPL-2.0+ 2 // 3 // OWL mux 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_MUX_H_ 12 #define _OWL_MUX_H_ 13 14 #include "owl-common.h" 15 16 struct owl_mux_hw { 17 u32 reg; 18 u8 shift; 19 u8 width; 20 }; 21 22 struct owl_mux { 23 struct owl_mux_hw mux_hw; 24 struct owl_clk_common common; 25 }; 26 27 #define OWL_MUX_HW(_reg, _shift, _width) \ 28 { \ 29 .reg = _reg, \ 30 .shift = _shift, \ 31 .width = _width, \ 32 } 33 34 #define OWL_MUX(_struct, _name, _parents, _reg, \ 35 _shift, _width, _flags) \ 36 struct owl_mux _struct = { \ 37 .mux_hw = OWL_MUX_HW(_reg, _shift, _width), \ 38 .common = { \ 39 .regmap = NULL, \ 40 .hw.init = CLK_HW_INIT_PARENTS(_name, \ 41 _parents, \ 42 &owl_mux_ops, \ 43 _flags), \ 44 }, \ 45 } 46 47 static inline struct owl_mux *hw_to_owl_mux(const struct clk_hw *hw) 48 { 49 struct owl_clk_common *common = hw_to_owl_clk_common(hw); 50 51 return container_of(common, struct owl_mux, common); 52 } 53 54 u8 owl_mux_helper_get_parent(const struct owl_clk_common *common, 55 const struct owl_mux_hw *mux_hw); 56 int owl_mux_helper_set_parent(const struct owl_clk_common *common, 57 struct owl_mux_hw *mux_hw, u8 index); 58 59 extern const struct clk_ops owl_mux_ops; 60 61 #endif /* _OWL_MUX_H_ */ 62