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From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
To: Andy Shevchenko
	<andy.shevchenko-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Matt Porter <mporter-l0cyMroinI0@public.gmane.org>,
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Subject: Re: [PATCH v5 07/14] dmaengine: add dma_request_slave_channel_compat()
Date: Mon, 28 Jan 2013 19:57:47 +0000	[thread overview]
Message-ID: <201301281957.47604.arnd@arndb.de> (raw)
In-Reply-To: <CAHp75VeqikcTuOd14utb9E0P3b9t1mr=JsmkAbz5=3FJwU2kFA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

On Monday 28 January 2013, Andy Shevchenko wrote:
> On Tue, Jan 15, 2013 at 10:32 PM, Matt Porter <mporter-l0cyMroinI0@public.gmane.org> wrote:
> > Adds a dma_request_slave_channel_compat() wrapper which accepts
> > both the arguments from dma_request_channel() and
> > dma_request_slave_channel(). Based on whether the driver is
> > instantiated via DT, the appropriate channel request call will be
> > made.
> >
> > This allows for a much cleaner migration of drivers to the
> > dmaengine DT API as platforms continue to be mixed between those
> > that boot using DT and those that do not.
> 
> Does it mean the introduced function is kinda temporary?

Some drivers can very likely get converted to use only
dma_request_slave_channel() in the long run, when all
the platforms using those drivers have been converted to
provide the channels using device tree.

However, for drivers that are used on legacy platforms
without DT support, we may still need something like
this function in the long run.

	Arnd

  parent reply	other threads:[~2013-01-28 19:57 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-15 20:32 [PATCH v5 00/14] DMA Engine support for AM33XX Matt Porter
     [not found] ` <1358281974-8411-1-git-send-email-mporter-l0cyMroinI0@public.gmane.org>
2013-01-15 20:32   ` [PATCH v5 01/14] ARM: davinci: move private EDMA API to arm/common Matt Porter
2013-01-15 20:32   ` [PATCH v5 02/14] ARM: edma: remove unused transfer controller handlers Matt Porter
2013-01-15 20:32   ` [PATCH v5 03/14] ARM: edma: add AM33XX support to the private EDMA API Matt Porter
2013-01-28 19:27     ` Andy Shevchenko
     [not found]       ` <CAHp75VeFZ19CCL-4huLNWbsXT-8sGrcvtxN=Dm0s+ojNA3w-3g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-01-30  6:41         ` Matt Porter
2013-01-30  7:40           ` Andy Shevchenko
2013-01-31  1:31             ` Matt Porter
2013-01-15 20:32   ` [PATCH v5 04/14] dmaengine: edma: enable build for AM33XX Matt Porter
2013-01-15 20:32   ` [PATCH v5 05/14] dmaengine: edma: Add TI EDMA device tree binding Matt Porter
2013-01-15 20:32   ` [PATCH v5 06/14] ARM: dts: add AM33XX EDMA support Matt Porter
2013-01-15 20:32   ` [PATCH v5 07/14] dmaengine: add dma_request_slave_channel_compat() Matt Porter
     [not found]     ` <1358281974-8411-8-git-send-email-mporter-l0cyMroinI0@public.gmane.org>
2013-01-23 22:28       ` Arnd Bergmann
2013-01-30  6:36         ` Matt Porter
2013-01-28 19:34     ` Andy Shevchenko
     [not found]       ` <CAHp75VeqikcTuOd14utb9E0P3b9t1mr=JsmkAbz5=3FJwU2kFA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-01-28 19:57         ` Arnd Bergmann [this message]
2013-01-15 20:32   ` [PATCH v5 08/14] mmc: omap_hsmmc: convert to dma_request_slave_channel_compat() Matt Porter
2013-01-15 20:32   ` [PATCH v5 09/14] mmc: omap_hsmmc: set max_segs based on dma engine limitations Matt Porter
2013-01-15 20:32   ` [PATCH v5 10/14] mmc: omap_hsmmc: add generic DMA request support to the DT binding Matt Porter
2013-01-15 20:32   ` [PATCH v5 11/14] ARM: dts: add AM33XX MMC support Matt Porter
2013-01-15 20:32   ` [PATCH v5 12/14] spi: omap2-mcspi: convert to dma_request_slave_channel_compat() Matt Porter
2013-01-15 20:32   ` [PATCH v5 13/14] spi: omap2-mcspi: add generic DMA request support to the DT binding Matt Porter
2013-01-15 20:32   ` [PATCH v5 14/14] ARM: dts: add AM33XX SPI DMA support Matt Porter
2013-01-22 15:56   ` [PATCH v5 00/14] DMA Engine support for AM33XX Sekhar Nori
2013-01-23  2:21     ` Mark Brown
     [not found]       ` <20130123022133.GA5727-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2013-01-23 10:49         ` Sekhar Nori
2013-01-23 21:37         ` Matt Porter
2013-01-24  5:14           ` Sekhar Nori
     [not found]           ` <d07dbfd50690423b903803720152c0dc@DLEE74.ent.ti.com>
2013-01-24 20:42             ` Matt Porter
2013-01-23 11:07   ` Santosh Shilimkar
     [not found]     ` <50FFC48B.80902-l0cyMroinI0@public.gmane.org>
2013-01-23 20:49       ` Matt Porter
2013-01-24  5:12         ` Santosh Shilimkar
     [not found]         ` <8ea1d227d84648f68e670c56f27c481e@DFLE72.ent.ti.com>
2013-01-24 20:49           ` Matt Porter
2013-01-25  7:02             ` Santosh Shilimkar

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