snd_echo_clock_source_switch 1590 sound/pci/echoaudio/echoaudio.c static const struct snd_kcontrol_new snd_echo_clock_source_switch = { snd_echo_clock_source_switch 2119 sound/pci/echoaudio/echoaudio.c chip->clock_src_ctl = snd_ctl_new1(&snd_echo_clock_source_switch, chip);