readme.txt

ak470x的linux驱动程序.ak470x是scart控制芯片.

Name
----
ak470x

Overview
--------
Proprietary kernel module used to control the AK470X family of SCART switch 
devices

Associated Device(s)
--------------------
/dev/ak470x

Parameters
----------
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 level

IOCTLs
------
AK470X_IOCTL_SWITCH_MODE_GET  : Get the current output mode
AK470X_IOCTL_SWITCH_MODE_SET  : Set the current output mode
AK470X_IOCTL_AUDIO_VOLUME_GET : Get the current volume level
AK470X_IOCTL_AUDIO_VOLUME_SET : Set the current volume level

Associated files
----------------

comps/ak470x/inc/ak470x.h