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 #define CCU_FEATURE_KEY_FIELD BIT(8) 21 22 /* MMC timing mode switch bit */ 23 #define CCU_MMC_NEW_TIMING_MODE BIT(30) 24 25 struct device_node; 26 27 struct ccu_common { 28 void __iomem *base; 29 u16 reg; 30 u16 lock_reg; 31 u32 prediv; 32 33 unsigned long features; 34 spinlock_t *lock; 35 struct clk_hw hw; 36 }; 37 38 static inline struct ccu_common *hw_to_ccu_common(struct clk_hw *hw) 39 { 40 return container_of(hw, struct ccu_common, hw); 41 } 42 43 struct sunxi_ccu_desc { 44 struct ccu_common **ccu_clks; 45 unsigned long num_ccu_clks; 46 47 struct clk_hw_onecell_data *hw_clks; 48 49 struct ccu_reset_map *resets; 50 unsigned long num_resets; 51 }; 52 53 void ccu_helper_wait_for_lock(struct ccu_common *common, u32 lock); 54 55 struct ccu_pll_nb { 56 struct notifier_block clk_nb; 57 struct ccu_common *common; 58 59 u32 enable; 60 u32 lock; 61 }; 62 63 #define to_ccu_pll_nb(_nb) container_of(_nb, struct ccu_pll_nb, clk_nb) 64 65 int ccu_pll_notifier_register(struct ccu_pll_nb *pll_nb); 66 67 int devm_sunxi_ccu_probe(struct device *dev, void __iomem *reg, 68 const struct sunxi_ccu_desc *desc); 69 void of_sunxi_ccu_probe(struct device_node *node, void __iomem *reg, 70 const struct sunxi_ccu_desc *desc); 71 72 #endif /* _COMMON_H_ */ 73