I2S_PCM_LOOPBACK_CH_SFT 941 sound/soc/mediatek/mt6797/mt6797-reg.h #define I2S_PCM_LOOPBACK_CH_SFT 12 I2S_PCM_LOOPBACK_CH_SFT 959 sound/soc/mediatek/mt8183/mt8183-reg.h #define I2S_PCM_LOOPBACK_CH_SFT 12