WM8996_CHIP_REVISION 1347 sound/soc/codecs/wm8996.c case WM8996_CHIP_REVISION: WM8996_CHIP_REVISION 1507 sound/soc/codecs/wm8996.c case WM8996_CHIP_REVISION: WM8996_CHIP_REVISION 2840 sound/soc/codecs/wm8996.c ret = regmap_read(wm8996->regmap, WM8996_CHIP_REVISION, ®);