diff options
Diffstat (limited to 'arch/x86/include/asm/i8254.h')
| -rw-r--r-- | arch/x86/include/asm/i8254.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/include/asm/i8254.h b/arch/x86/include/asm/i8254.h index 65c97614d3..d769daf85d 100644 --- a/arch/x86/include/asm/i8254.h +++ b/arch/x86/include/asm/i8254.h @@ -35,4 +35,22 @@ /* The clock frequency of the i8253/i8254 PIT */ #define PIT_TICK_RATE 1193182 +/** + * i8254_enable_beep() - Start a beep using the PCAT timer + * + * This starts beeping using the legacy i8254 timer. The beep may be silenced + * after a delay with i8254_disable_beep(). + * + * @frequency_hz: Frequency of beep in Hz + * @return 0 if OK, -EINVAL if frequency_hz is 0 + */ +int i8254_enable_beep(uint frequency_hz); + +/** + * i8254_disable_beep() - Disable the bepper + * + * This stops any existing beep + */ +void i8254_disable_beep(void); + #endif /* _ASMI386_I8954_H_ */ |