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path: root/sound/pci/ctxfi/cttimer.c
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2009-06-08ALSA: ctxfi - Optimize the native timer handling using wc counterTakashi Iwai1-28/+48
Optimize the timer update routine to look up wall clock once instead of checking the position of each stream at each timer update. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-05ALSA: ctxfi - Add missing inclusion of linux/math64.hTakashi Iwai1-0/+1
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-05ALSA: ctxfi - Use native timer interrupt on emu20k1Takashi Iwai1-0/+417
emu20k1 has a native timer interrupt based on the audio clock, which is more accurate than the system timer (from the synchronization POV). This patch adds the code to handle this with multiple streams. The system timer is still used on emu20k2, and can be used also for emu20k1 easily by changing USE_SYSTEM_TIMER to 1 in cttimer.c. Signed-off-by: Takashi Iwai <tiwai@suse.de>