xref: /linux/arch/powerpc/include/asm/mediabay.h (revision 498495dba268b20e8eadd7fe93c140c68b6cc9d2)
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 
check_media_bay(struct macio_dev * bay)38 static inline int check_media_bay(struct macio_dev *bay)
39 {
40 	return MB_NO;
41 }
42 
lock_media_bay(struct macio_dev * bay)43 static inline void lock_media_bay(struct macio_dev *bay) { }
unlock_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 */
50