diff options
Diffstat (limited to 'drivers/char/rtrack.h')
| -rw-r--r-- | drivers/char/rtrack.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/char/rtrack.h b/drivers/char/rtrack.h new file mode 100644 index 000000000..b5a9bc124 --- /dev/null +++ b/drivers/char/rtrack.h @@ -0,0 +1,25 @@ +/* RadioTrack (RadioReveal) include file. + * (c) 1997 M. Kirkwood + * + * Not in include/linux/ because there's no need for anyone + * to know about these details, I reckon. + */ + +#ifndef __RTRACK_H +#define __RTRACK_H + +#include <linux/radio.h> + +void radiotrack_init(void); +int rt_setvol(struct radio_device *dev, int vol); +int rt_setband(struct radio_device *dev, int vol); +int rt_setfreq(struct radio_device *dev, int vol); +int rt_getsigstr(struct radio_device *dev); + +/* frequency encoding stuff... */ +/* we have to careful not to introduce fp stuff here */ +#define RTRACK_ENCODE(x) (((((x)*2)/5)-(40*88))+0xf6c) +#define RTRACK_DECODE(x) (((((x)-0xf6c)+(40*88))*5)/2) +/* we shouldn't actually need the decode macro (or the excessive bracketing :-) */ + +#endif /* __RTRACK_H */ |