On Wed, 2010-05-19 at 21:22 +0900, Joonyoung Shim wrote:

I have a target(The cpu is S5PC110) which doesn't have audio codec, but it needs the audio device node to play audio at the TV via HDMI. The S5PC110 HDMI transmits itself to TV the audio data from I2S buffer, so i have made dummy codec driver to create audio device node and to transmit audio data to I2S buffer.

How do you think about the dummy codec driver?

That seems like a good solution to your problem - there's already a few dummy drivers present in the tree for fixed function devices (so all they do is set capabilities for the DAI link). This would slot in nicely beside them.