arch/metag/include/asm/da.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Meta DA JTAG debugger control.
   4  *
   5  * Copyright 2012 Imagination Technologies Ltd.
   6  */
   7
   8 #ifndef _METAG_DA_H_
   9 #define _METAG_DA_H_
  10
  11 #ifdef CONFIG_METAG_DA
  12
  13 #include <linux/init.h>
  14 #include <linux/types.h>
  15
  16 extern bool _metag_da_present;
  17
  18 /**
  19  * metag_da_enabled() - Find whether a DA is currently enabled.
  20  *
  21  * Returns:     true if a DA was detected, false if not.
  22  */
  23 static inline bool metag_da_enabled(void)
  24 {
  25         return _metag_da_present;
  26 }
  27
  28 /**
  29  * metag_da_probe() - Try and detect a connected DA.
  30  *
  31  * This is used at start up to detect whether a DA is active.
  32  *
  33  * Returns:     0 on detection, -err otherwise.
  34  */
  35 int __init metag_da_probe(void);
  36
  37 #else /* !CONFIG_METAG_DA */
  38
  39 #define metag_da_enabled() false
  40 #define metag_da_probe() do {} while (0)
  41
  42 #endif
  43
  44 #endif /* _METAG_DA_H_ */