drivers/net/ethernet/ti/am65-cpts.h

   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_rx_timestamp(struct am65_cpts *cpts, struct sk_buff *skb);
  26 void am65_cpts_tx_timestamp(struct am65_cpts *cpts, struct sk_buff *skb);
  27 void am65_cpts_prep_tx_timestamp(struct am65_cpts *cpts, struct sk_buff *skb);
  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_rx_timestamp(struct am65_cpts *cpts,
  52                                           struct sk_buff *skb)
  53 {
  54 }
  55
  56 static inline void am65_cpts_tx_timestamp(struct am65_cpts *cpts,
  57                                           struct sk_buff *skb)
  58 {
  59 }
  60
  61 static inline void am65_cpts_prep_tx_timestamp(struct am65_cpts *cpts,
  62                                                struct sk_buff *skb)
  63 {
  64 }
  65
  66 static inline s64 am65_cpts_ns_gettime(struct am65_cpts *cpts)
  67 {
  68         return 0;
  69 }
  70
  71 static inline int am65_cpts_estf_enable(struct am65_cpts *cpts, int idx,
  72                                         struct am65_cpts_estf_cfg *cfg)
  73 {
  74         return 0;
  75 }
  76
  77 static inline void am65_cpts_estf_disable(struct am65_cpts *cpts, int idx)
  78 {
  79 }
  80
  81 static inline void am65_cpts_suspend(struct am65_cpts *cpts)
  82 {
  83 }
  84
  85 static inline void am65_cpts_resume(struct am65_cpts *cpts)
  86 {
  87 }
  88 #endif
  89
  90 #endif /* K3_CPTS_H_ */