1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* TI K3 AM65 CPTS driver interface 3 * 4 * Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com 5 */ 6 7 #ifndef K3_CPTS_H_ 8 #define K3_CPTS_H_ 9 10 #include <linux/device.h> 11 #include <linux/of.h> 12 13 struct am65_cpts; 14 15 struct am65_cpts_estf_cfg { 16 u64 ns_period; 17 u64 ns_start; 18 }; 19 20 #if IS_ENABLED(CONFIG_TI_K3_AM65_CPTS) 21 void am65_cpts_release(struct am65_cpts *cpts); 22 struct am65_cpts *am65_cpts_create(struct device *dev, void __iomem *regs, 23 struct device_node *node); 24 int am65_cpts_phc_index(struct am65_cpts *cpts); 25 void am65_cpts_tx_timestamp(struct am65_cpts *cpts, struct sk_buff *skb); 26 void am65_cpts_prep_tx_timestamp(struct am65_cpts *cpts, struct sk_buff *skb); 27 void am65_cpts_rx_enable(struct am65_cpts *cpts, bool en); 28 u64 am65_cpts_ns_gettime(struct am65_cpts *cpts); 29 int am65_cpts_estf_enable(struct am65_cpts *cpts, int idx, 30 struct am65_cpts_estf_cfg *cfg); 31 void am65_cpts_estf_disable(struct am65_cpts *cpts, int idx); 32 void am65_cpts_suspend(struct am65_cpts *cpts); 33 void am65_cpts_resume(struct am65_cpts *cpts); 34 #else 35 static inline void am65_cpts_release(struct am65_cpts *cpts) 36 { 37 } 38 39 static inline struct am65_cpts *am65_cpts_create(struct device *dev, 40 void __iomem *regs, 41 struct device_node *node) 42 { 43 return ERR_PTR(-EOPNOTSUPP); 44 } 45 46 static inline int am65_cpts_phc_index(struct am65_cpts *cpts) 47 { 48 return -1; 49 } 50 51 static inline void am65_cpts_tx_timestamp(struct am65_cpts *cpts, 52 struct sk_buff *skb) 53 { 54 } 55 56 static inline void am65_cpts_prep_tx_timestamp(struct am65_cpts *cpts, 57 struct sk_buff *skb) 58 { 59 } 60 61 static inline void am65_cpts_rx_enable(struct am65_cpts *cpts, bool en) 62 { 63 } 64 65 static inline s64 am65_cpts_ns_gettime(struct am65_cpts *cpts) 66 { 67 return 0; 68 } 69 70 static inline int am65_cpts_estf_enable(struct am65_cpts *cpts, int idx, 71 struct am65_cpts_estf_cfg *cfg) 72 { 73 return 0; 74 } 75 76 static inline void am65_cpts_estf_disable(struct am65_cpts *cpts, int idx) 77 { 78 } 79 80 static inline void am65_cpts_suspend(struct am65_cpts *cpts) 81 { 82 } 83 84 static inline void am65_cpts_resume(struct am65_cpts *cpts) 85 { 86 } 87 #endif 88 89 #endif /* K3_CPTS_H_ */ 90