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Re: [PATCH 1/2] dmaengine: TXx9 Soc DMA Controller driver

To: dan.j.williams@intel.com
Subject: Re: [PATCH 1/2] dmaengine: TXx9 Soc DMA Controller driver
From: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Date: Thu, 02 Apr 2009 01:20:45 +0900 (JST)
Cc: linux-mips@linux-mips.org, ralf@linux-mips.org, linux-kernel@vger.kernel.org, haavard.skinnemoen@atmel.com
In-reply-to: <e9c3a7c20903311234t63335987l46480cd27a326022@mail.gmail.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <20090321.212920.25912728.anemo@mba.ocn.ne.jp> <20090326.231243.112855442.anemo@mba.ocn.ne.jp> <e9c3a7c20903311234t63335987l46480cd27a326022@mail.gmail.com>
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On Tue, 31 Mar 2009 12:34:59 -0700, Dan Williams <dan.j.williams@intel.com> 
wrote:
> > Unfortunately, not so simple.  If I created a dma_device for each
> > channel, all chan->chan_id will be 0 and all chan->device->dev points
> > same platform device.  This makes client driver hard to select the
> > particular channel.  Making a platform device for each channel will
> > solve this, but it looks wrong way to go for me.
> 
> Why?  mv_xor, iop-adma, and ioat each have a platform or pci device
> per channel so you would be in good company.

Hmm, indeed.  I will try it.  Thanks.
---
Atsushi Nemoto

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