PCM_REAR_CHANNEL 471 sound/pci/ca0106/ca0106_main.c [PCM_REAR_CHANNEL] = SPI_DACD0_REG, PCM_REAR_CHANNEL 477 sound/pci/ca0106/ca0106_main.c [PCM_REAR_CHANNEL] = SPI_DACD0_BIT, PCM_REAR_CHANNEL 566 sound/pci/ca0106/ca0106_main.c return snd_ca0106_pcm_open_playback_channel(substream, PCM_REAR_CHANNEL);