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Date: Tue, 27 Apr 2010 13:32:16 -0500
From: Timur Tabi <timur@freescale.com>
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To: Liam Girdwood <lrg@slimlogic.co.uk>
Subject: Re: [alsa-devel] [PATCH 1/2] powerpc: add platform registration for
	ALSA SoC drivers
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Liam Girdwood wrote:

>> 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.


-- 
Timur Tabi
Linux kernel developer at Freescale