1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (c) 2024 SpacemiT Technology Co. Ltd 4 * Copyright (c) 2024-2025 Haylen Chu <heylenay@4d2.org> 5 */ 6 7 #ifndef _CCU_DDN_H_ 8 #define _CCU_DDN_H_ 9 10 #include <linux/bitops.h> 11 #include <linux/clk-provider.h> 12 13 #include "ccu_common.h" 14 15 struct ccu_ddn { 16 struct ccu_common common; 17 unsigned int num_mask; 18 unsigned int num_shift; 19 unsigned int den_mask; 20 unsigned int den_shift; 21 }; 22 23 #define CCU_DDN_INIT(_name, _parent, _flags) \ 24 CLK_HW_INIT_HW(#_name, &_parent.common.hw, &spacemit_ccu_ddn_ops, _flags) 25 26 #define CCU_DDN_DEFINE(_name, _parent, _reg_ctrl, _num_shift, _num_width, \ 27 _den_shift, _den_width, _flags) \ 28 static struct ccu_ddn _name = { \ 29 .common = { \ 30 .reg_ctrl = _reg_ctrl, \ 31 .hw.init = CCU_DDN_INIT(_name, _parent, _flags), \ 32 }, \ 33 .num_mask = GENMASK(_num_shift + _num_width - 1, _num_shift), \ 34 .num_shift = _num_shift, \ 35 .den_mask = GENMASK(_den_shift + _den_width - 1, _den_shift), \ 36 .den_shift = _den_shift, \ 37 } 38 39 static inline struct ccu_ddn *hw_to_ccu_ddn(struct clk_hw *hw) 40 { 41 struct ccu_common *common = hw_to_ccu_common(hw); 42 43 return container_of(common, struct ccu_ddn, common); 44 } 45 46 extern const struct clk_ops spacemit_ccu_ddn_ops; 47 48 #endif 49