wm8988_diff_sel   316 sound/soc/codecs/wm8988.c static const char *wm8988_diff_sel[] = {"Line 1", "Line 2"};
wm8988_diff_sel   318 sound/soc/codecs/wm8988.c 			    WM8988_ADCIN, 8, wm8988_diff_sel);