Re: [alsa-devel] [PATCH 1/2] powerpc: add platform registration for ALSA SoC drivers

Liam Girdwood wrote:

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I would need some way for fsl_dma_open() to get a pointer to private, DMA-specific data. I'm not sure how I can do that.

In multi-component we now have platform_data and device private data (from the regular driver model).

In that case, I still have the same problem with how to generate an 'id' based on a device tree node. We have the idea of a 'phandle', which is a unique integer for a node, but there's no way to create phandles from within Linux. They have to exist in the DTS first, and I'm loathe to modify the DTS.