mux.h (2597B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2// 3// Spreadtrum multiplexer clock driver 4// 5// Copyright (C) 2017 Spreadtrum, Inc. 6// Author: Chunyan Zhang <chunyan.zhang@spreadtrum.com> 7 8#ifndef _SPRD_MUX_H_ 9#define _SPRD_MUX_H_ 10 11#include "common.h" 12 13/** 14 * struct sprd_mux_ssel - Mux clock's source select bits in its register 15 * @shift: Bit offset of the divider in its register 16 * @width: Width of the divider field in its register 17 * @table: For some mux clocks, not all sources are used on some special 18 * chips, this matches the value of mux clock's register and the 19 * sources which are used for this mux clock 20 */ 21struct sprd_mux_ssel { 22 u8 shift; 23 u8 width; 24 const u8 *table; 25}; 26 27struct sprd_mux { 28 struct sprd_mux_ssel mux; 29 struct sprd_clk_common common; 30}; 31 32#define _SPRD_MUX_CLK(_shift, _width, _table) \ 33 { \ 34 .shift = _shift, \ 35 .width = _width, \ 36 .table = _table, \ 37 } 38 39#define SPRD_MUX_CLK_HW_INIT_FN(_struct, _name, _parents, _table, \ 40 _reg, _shift, _width, _flags, _fn) \ 41 struct sprd_mux _struct = { \ 42 .mux = _SPRD_MUX_CLK(_shift, _width, _table), \ 43 .common = { \ 44 .regmap = NULL, \ 45 .reg = _reg, \ 46 .hw.init = _fn(_name, _parents, \ 47 &sprd_mux_ops, _flags), \ 48 } \ 49 } 50 51#define SPRD_MUX_CLK_TABLE(_struct, _name, _parents, _table, \ 52 _reg, _shift, _width, _flags) \ 53 SPRD_MUX_CLK_HW_INIT_FN(_struct, _name, _parents, _table, \ 54 _reg, _shift, _width, _flags, \ 55 CLK_HW_INIT_PARENTS) 56 57#define SPRD_MUX_CLK(_struct, _name, _parents, _reg, \ 58 _shift, _width, _flags) \ 59 SPRD_MUX_CLK_TABLE(_struct, _name, _parents, NULL, \ 60 _reg, _shift, _width, _flags) 61 62#define SPRD_MUX_CLK_DATA_TABLE(_struct, _name, _parents, _table, \ 63 _reg, _shift, _width, _flags) \ 64 SPRD_MUX_CLK_HW_INIT_FN(_struct, _name, _parents, _table, \ 65 _reg, _shift, _width, _flags, \ 66 CLK_HW_INIT_PARENTS_DATA) 67 68#define SPRD_MUX_CLK_DATA(_struct, _name, _parents, _reg, \ 69 _shift, _width, _flags) \ 70 SPRD_MUX_CLK_DATA_TABLE(_struct, _name, _parents, NULL, \ 71 _reg, _shift, _width, _flags) 72 73static inline struct sprd_mux *hw_to_sprd_mux(const struct clk_hw *hw) 74{ 75 struct sprd_clk_common *common = hw_to_sprd_clk_common(hw); 76 77 return container_of(common, struct sprd_mux, common); 78} 79 80extern const struct clk_ops sprd_mux_ops; 81 82u8 sprd_mux_helper_get_parent(const struct sprd_clk_common *common, 83 const struct sprd_mux_ssel *mux); 84int sprd_mux_helper_set_parent(const struct sprd_clk_common *common, 85 const struct sprd_mux_ssel *mux, 86 u8 index); 87 88#endif /* _SPRD_MUX_H_ */