hp_diff_single_supply 99 include/sound/da7218.h bool hp_diff_single_supply; hp_diff_single_supply 2513 sound/soc/codecs/da7218.c pdata->hp_diff_single_supply = true; hp_diff_single_supply 2802 sound/soc/codecs/da7218.c pdata->hp_diff_single_supply;