WM8983_NOISE_GATE 220 sound/soc/codecs/wm8983.c SOC_SINGLE("ALC Capture NG Switch", WM8983_NOISE_GATE, WM8983_NOISE_GATE 222 sound/soc/codecs/wm8983.c SOC_SINGLE("ALC Capture NG Threshold", WM8983_NOISE_GATE,