RTC Timer support

modulename: snd-rtctimer.ko

configname: CONFIG_SND_RTCTIMER

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>RTC Timer support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Say Y here to enable RTC timer support for ALSA. ALSA uses
the RTC timer as a precise timing source and maps the RTC
timer to ALSA's timer interface. The ALSA sequencer code also
can use this timing source.

To compile this driver as a module, choose M here: the module
will be called snd-rtctimer.

Note that this option is exclusive with the new RTC drivers
(CONFIG_RTC_CLASS) since this requires the old API.

source code: