1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (c) 2016 Maxime Ripard. All rights reserved. 4 */ 5 6 #ifndef _COMMON_H_ 7 #define _COMMON_H_ 8 9 #include <linux/compiler.h> 10 #include <linux/clk-provider.h> 11 12 #define CCU_FEATURE_FRACTIONAL BIT(0) 13 #define CCU_FEATURE_VARIABLE_PREDIV BIT(1) 14 #define CCU_FEATURE_FIXED_PREDIV BIT(2) 15 #define CCU_FEATURE_FIXED_POSTDIV BIT(3) 16 #define CCU_FEATURE_ALL_PREDIV BIT(4) 17 #define CCU_FEATURE_LOCK_REG BIT(5) 18 #define CCU_FEATURE_MMC_TIMING_SWITCH BIT(6) 19 #define CCU_FEATURE_SIGMA_DELTA_MOD BIT(7) 20 21 /* MMC timing mode switch bit */ 22 #define CCU_MMC_NEW_TIMING_MODE BIT(30) 23 24 struct device_node; 25 26 struct ccu_common { 27 void __iomem *base; 28 u16 reg; 29 u16 lock_reg; 30 u32 prediv; 31 32 unsigned long features; 33 spinlock_t *lock; 34 struct clk_hw hw; 35 }; 36 hw_to_ccu_common(struct clk_hw * hw)37static inline struct ccu_common *hw_to_ccu_common(struct clk_hw *hw) 38 { 39 return container_of(hw, struct ccu_common, hw); 40 } 41 42 struct sunxi_ccu_desc { 43 struct ccu_common **ccu_clks; 44 unsigned long num_ccu_clks; 45 46 struct clk_hw_onecell_data *hw_clks; 47 48 struct ccu_reset_map *resets; 49 unsigned long num_resets; 50 }; 51 52 void ccu_helper_wait_for_lock(struct ccu_common *common, u32 lock); 53 54 struct ccu_pll_nb { 55 struct notifier_block clk_nb; 56 struct ccu_common *common; 57 58 u32 enable; 59 u32 lock; 60 }; 61 62 #define to_ccu_pll_nb(_nb) container_of(_nb, struct ccu_pll_nb, clk_nb) 63 64 int ccu_pll_notifier_register(struct ccu_pll_nb *pll_nb); 65 66 int sunxi_ccu_probe(struct device_node *node, void __iomem *reg, 67 const struct sunxi_ccu_desc *desc); 68 69 #endif /* _COMMON_H_ */ 70