release/src-rt-6.x.4708/linux/linux-2.6.36/arch/powerpc/include/asm/mediabay.h

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