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path: root/sound/pci/ctxfi/cttimer.c
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2009-06-15ALSA: ctxfi - Fix deadlock with xfi-timerTakashi Iwai
The PCM x-fi native update routine can cause deadlocks when the trigger(START) is called while the stream is running. This patch fixes the deadlock by just postponing the pcm period update to the next possible wake-up. Also it adds the flip of ti->running flag (just to be sure as now). Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-08ALSA: ctxfi - Add use_system_timer module optionTakashi Iwai
Added use_system_timer module option to force to use the system timer instead of emu20k1 timer irq for debugging. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-08ALSA: ctxfi - Optimize the native timer handling using wc counterTakashi Iwai
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 Iwai
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-05ALSA: ctxfi - Use native timer interrupt on emu20k1Takashi Iwai
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>