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authorAdrian Knoth <adi@drcomp.erfurt.thur.de>2012-10-19 19:42:22 +0400
committerTakashi Iwai <tiwai@suse.de>2012-10-20 12:39:45 +0400
commit41285a98f8f052b59f01bbbcb0064e5e41b0ca2d (patch)
tree11fbf5848c0b9de60e0b79b29d4fe089e5c5043c /sound/arm
parent84f98fdf7865fbd35b312eb39ea91e5618c514c7 (diff)
downloadlinux-41285a98f8f052b59f01bbbcb0064e5e41b0ca2d.tar.xz
ALSA: hdspm - Allow DDS/Varispeed to be set from userspace
The DDS value is the actual physical sample rate. We set it indirectly when selecting 44100, 48000 and so on via snd_hdspm_hw_params or hdspm_set_clock_source. This commit now allows the DDS value to be altered at runtime, thus speeding up or slowing down the physical sample rate. This is required for MADI's varispeed that allows for ±12.5% speed adjustment from the "selected" rate (32kHz, 44100kHz, 48kHz and so on). Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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