Name----ak470xOverview--------Proprietary kernel module used to control the AK470X family of SCART switch devicesAssociated Device(s)--------------------/dev/ak470xParameters----------debug       : Enable additional debug output [default 0]loopthrough : Force device into loopthrough mode VCR -> TV [default 0]Description-----------The SCART switch device is used to route the audio and video output of the STB to either a TV SCART output, a VCR SCART output or HD YPbPr component outputs. It can also be used to control the analogue audio output level.The Advanced Linux Sound Architecture (ALSA) component, phStbAlsa uses the functional API of ak470x to control the audio volume levelIOCTLs------AK470X_IOCTL_SWITCH_MODE_GET  : Get the current output modeAK470X_IOCTL_SWITCH_MODE_SET  : Set the current output modeAK470X_IOCTL_AUDIO_VOLUME_GET : Get the current volume levelAK470X_IOCTL_AUDIO_VOLUME_SET : Set the current volume levelAssociated files----------------comps/ak470x/inc/ak470x.h