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 struct am65_cpts *am65_cpts_create(struct device *dev, void __iomem *regs, 22 struct device_node *node); 23 int am65_cpts_phc_index(struct am65_cpts *cpts); 24 void am65_cpts_tx_timestamp(struct am65_cpts *cpts, struct sk_buff *skb); 25 void am65_cpts_prep_tx_timestamp(struct am65_cpts *cpts, struct sk_buff *skb); 26 void am65_cpts_rx_enable(struct am65_cpts *cpts, bool en); 27 u64 am65_cpts_ns_gettime(struct am65_cpts *cpts); 28 int am65_cpts_estf_enable(struct am65_cpts *cpts, int idx, 29 struct am65_cpts_estf_cfg *cfg); 30 void am65_cpts_estf_disable(struct am65_cpts *cpts, int idx); 31 #else 32 static inline struct am65_cpts *am65_cpts_create(struct device *dev, 33 void __iomem *regs, 34 struct device_node *node) 35 { 36 return ERR_PTR(-EOPNOTSUPP); 37 } 38 39 static inline int am65_cpts_phc_index(struct am65_cpts *cpts) 40 { 41 return -1; 42 } 43 44 static inline void am65_cpts_tx_timestamp(struct am65_cpts *cpts, 45 struct sk_buff *skb) 46 { 47 } 48 49 static inline void am65_cpts_prep_tx_timestamp(struct am65_cpts *cpts, 50 struct sk_buff *skb) 51 { 52 } 53 54 static inline void am65_cpts_rx_enable(struct am65_cpts *cpts, bool en) 55 { 56 } 57 58 static inline s64 am65_cpts_ns_gettime(struct am65_cpts *cpts) 59 { 60 return 0; 61 } 62 63 static inline int am65_cpts_estf_enable(struct am65_cpts *cpts, int idx, 64 struct am65_cpts_estf_cfg *cfg) 65 { 66 return 0; 67 } 68 69 static inline void am65_cpts_estf_disable(struct am65_cpts *cpts, int idx) 70 { 71 } 72 #endif 73 74 #endif /* K3_CPTS_H_ */ 75