1 /* 2 * Copyright (c) 2016 Maxime Ripard. All rights reserved. 3 * 4 * This software is licensed under the terms of the GNU General Public 5 * License version 2, as published by the Free Software Foundation, and 6 * may be copied, distributed, and modified under those terms. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 */ 13 14 #ifndef _COMMON_H_ 15 #define _COMMON_H_ 16 17 #include <linux/compiler.h> 18 #include <linux/clk-provider.h> 19 20 #define CCU_FEATURE_FRACTIONAL BIT(0) 21 #define CCU_FEATURE_VARIABLE_PREDIV BIT(1) 22 #define CCU_FEATURE_FIXED_PREDIV BIT(2) 23 #define CCU_FEATURE_FIXED_POSTDIV BIT(3) 24 25 struct device_node; 26 27 #define CLK_HW_INIT(_name, _parent, _ops, _flags) \ 28 &(struct clk_init_data) { \ 29 .flags = _flags, \ 30 .name = _name, \ 31 .parent_names = (const char *[]) { _parent }, \ 32 .num_parents = 1, \ 33 .ops = _ops, \ 34 } 35 36 #define CLK_HW_INIT_PARENTS(_name, _parents, _ops, _flags) \ 37 &(struct clk_init_data) { \ 38 .flags = _flags, \ 39 .name = _name, \ 40 .parent_names = _parents, \ 41 .num_parents = ARRAY_SIZE(_parents), \ 42 .ops = _ops, \ 43 } 44 45 #define CLK_FIXED_FACTOR(_struct, _name, _parent, \ 46 _div, _mult, _flags) \ 47 struct clk_fixed_factor _struct = { \ 48 .div = _div, \ 49 .mult = _mult, \ 50 .hw.init = CLK_HW_INIT(_name, \ 51 _parent, \ 52 &clk_fixed_factor_ops, \ 53 _flags), \ 54 } 55 56 struct ccu_common { 57 void __iomem *base; 58 u16 reg; 59 60 unsigned long features; 61 spinlock_t *lock; 62 struct clk_hw hw; 63 }; 64 65 static inline struct ccu_common *hw_to_ccu_common(struct clk_hw *hw) 66 { 67 return container_of(hw, struct ccu_common, hw); 68 } 69 70 struct sunxi_ccu_desc { 71 struct ccu_common **ccu_clks; 72 unsigned long num_ccu_clks; 73 74 struct clk_hw_onecell_data *hw_clks; 75 76 struct ccu_reset_map *resets; 77 unsigned long num_resets; 78 }; 79 80 void ccu_helper_wait_for_lock(struct ccu_common *common, u32 lock); 81 82 int sunxi_ccu_probe(struct device_node *node, void __iomem *reg, 83 const struct sunxi_ccu_desc *desc); 84 85 #endif /* _COMMON_H_ */ 86