snd_emu10k1_init_mono_onoff_control
snd_emu10k1_init_mono_onoff_control(controls + nctl++, "Tone Control - Switch", gpr, 0);
snd_emu10k1_init_mono_onoff_control(controls + i++, "Front Capture Switch", gpr + 2, 0);
snd_emu10k1_init_mono_onoff_control(controls + i++, "Tone Control - Switch", gpr, 0);
snd_emu10k1_init_mono_onoff_control(controls + i++, "Headphone Center Playback Switch", gpr + 2, 0);
snd_emu10k1_init_mono_onoff_control(controls + i++, "Headphone LFE Playback Switch", gpr + 3, 0);