PCM_I2S_PCM_LOOPBACK_MASK 856 sound/soc/mediatek/mt6797/mt6797-reg.h #define PCM_I2S_PCM_LOOPBACK_MASK 0x1 PCM_I2S_PCM_LOOPBACK_MASK 871 sound/soc/mediatek/mt8183/mt8183-reg.h #define PCM_I2S_PCM_LOOPBACK_MASK 0x1