snd_ac97_update (9) Linux Manual Page
snd_ac97_update – update the value on the given register
Synopsis
int snd_ac97_update(struct snd_ac97 *ac97, unsigned short reg, unsigned short value);Arguments
ac97
-
- the ac97 instance
reg
- the register to change
value
- the value to set
Description
Compares the value with the register cache and updates the value only when the value is changed.
Return
1 if the value is changed, 0 if no change, or a negative code on failure.