arch/powerpc/include/asm/mediabay.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * mediabay.h: definitions for using the media bay
   4  * on PowerBook 3400 and similar computers.
   5  *
   6  * Copyright (C) 1997 Paul Mackerras.
   7  */
   8 #ifndef _PPC_MEDIABAY_H
   9 #define _PPC_MEDIABAY_H
  10
  11 #ifdef __KERNEL__
  12
  13 #define MB_FD           0       /* media bay contains floppy drive (automatic eject ?) */
  14 #define MB_FD1          1       /* media bay contains floppy drive (manual eject ?) */
  15 #define MB_SOUND        2       /* sound device ? */
  16 #define MB_CD           3       /* media bay contains ATA drive such as CD or ZIP */
  17 #define MB_PCI          5       /* media bay contains a PCI device */
  18 #define MB_POWER        6       /* media bay contains a Power device (???) */
  19 #define MB_NO           7       /* media bay contains nothing */
  20
  21 struct macio_dev;
  22
  23 #ifdef CONFIG_PMAC_MEDIABAY
  24
  25 /* Check the content type of the bay, returns MB_NO if the bay is still
  26  * transitionning
  27  */
  28 extern int check_media_bay(struct macio_dev *bay);
  29
  30 /* The ATA driver uses the calls below to temporarily hold on the
  31  * media bay callbacks while initializing the interface
  32  */
  33 extern void lock_media_bay(struct macio_dev *bay);
  34 extern void unlock_media_bay(struct macio_dev *bay);
  35
  36 #else
  37
  38 static inline int check_media_bay(struct macio_dev *bay)
  39 {
  40         return MB_NO;
  41 }
  42
  43 static inline void lock_media_bay(struct macio_dev *bay) { }
  44 static inline void unlock_media_bay(struct macio_dev *bay) { }
  45
  46 #endif
  47
  48 #endif /* __KERNEL__ */
  49 #endif /* _PPC_MEDIABAY_H */