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| author | Vitja Makarov <vitja.makarov@gmail.com> | 2009-09-04 09:36:53 +0000 |
|---|---|---|
| committer | Vitja Makarov <vitja.makarov@gmail.com> | 2009-09-04 09:36:53 +0000 |
| commit | b5e39c15a55b3e46643bf3b46bb6c664b6cb50a4 (patch) | |
| tree | fa4e817f39612c213e76f006f227341abd1d978c /firmware/target/arm/tcc77x/system-target.h | |
| parent | 4b4e5e9265a976a7e33ee305690481bb74a1a292 (diff) | |
| download | rockbox-b5e39c15a55b3e46643bf3b46bb6c664b6cb50a4.tar.gz rockbox-b5e39c15a55b3e46643bf3b46bb6c664b6cb50a4.zip | |
iaudio7: Implement udelay, mostly based on D2 port, except Z-clock initialization
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22620 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/arm/tcc77x/system-target.h')
| -rw-r--r-- | firmware/target/arm/tcc77x/system-target.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/firmware/target/arm/tcc77x/system-target.h b/firmware/target/arm/tcc77x/system-target.h index 16cfb9127d..55dd52ef47 100644 --- a/firmware/target/arm/tcc77x/system-target.h +++ b/firmware/target/arm/tcc77x/system-target.h | |||
| @@ -34,4 +34,13 @@ | |||
| 34 | #define inw(a) (*(volatile unsigned short *) (a)) | 34 | #define inw(a) (*(volatile unsigned short *) (a)) |
| 35 | #define outw(a,b) (*(volatile unsigned short *) (b) = (a)) | 35 | #define outw(a,b) (*(volatile unsigned short *) (b) = (a)) |
| 36 | 36 | ||
| 37 | /* TC32 is configured to 1MHz in clock_init() */ | ||
| 38 | #define USEC_TIMER TC32MCNT | ||
| 39 | |||
| 40 | static inline void udelay(unsigned usecs) | ||
| 41 | { | ||
| 42 | unsigned stop = USEC_TIMER + usecs; | ||
| 43 | while (TIME_BEFORE(USEC_TIMER, stop)); | ||
| 44 | } | ||
| 45 | |||
| 37 | #endif /* SYSTEM_TARGET_H */ | 46 | #endif /* SYSTEM_TARGET_H */ |