From: Arnd Bergmann <arnd@arndb.de>
To: Rameshwar Sahu <rsahu@apm.com>
Cc: Vinod Koul <vinod.koul@intel.com>,
dan.j.williams@intel.com, dmaengine@vger.kernel.org,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, jcm@redhat.com,
patches@apm.com
Subject: Re: [PATCH] dmaengine: xgene-dma: Add ACPI support for X-Gene DMA engine driver
Date: Sat, 01 Aug 2015 23:28:19 +0200 [thread overview]
Message-ID: <2216844.XmXxxWVjii@wuerfel> (raw)
In-Reply-To: <CAFd313xntHx7JhfTWSsJo+bTm-DuEcbAzqXt9in1s0irL3g7sw@mail.gmail.com>
On Thursday 30 July 2015 14:21:07 Rameshwar Sahu wrote:
> Hi Arnd,
>
> On Wed, Jul 29, 2015 at 8:04 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> > On Tuesday 21 July 2015 18:44:39 Rameshwar Prasad Sahu wrote:
> >> This patch adds ACPI support for the APM X-Gene DMA engine driver.
> >>
> >> Signed-off-by: Rameshwar Prasad Sahu <rsahu@apm.com>
> >>
> >
> > How does a slave driver refer to a channel in case of ACPI?
>
> We don't support slave dma here. This driver supports only memcp, xor,
> pq, scatter-gather offloading, so,
> client driver can use linux dmaengine APIs like dma_request_channel()
> etc to request channel.
Ok, makes sense. Thanks!
Arnd
next prev parent reply other threads:[~2015-08-01 21:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-21 13:14 [PATCH] dmaengine: xgene-dma: Add ACPI support for X-Gene DMA engine driver Rameshwar Prasad Sahu
2015-07-28 10:03 ` Rameshwar Sahu
2015-07-29 14:34 ` Arnd Bergmann
2015-07-30 8:51 ` Rameshwar Sahu
2015-08-01 21:28 ` Arnd Bergmann [this message]
[not found] ` <1437484479-2822-1-git-send-email-rsahu-qTEPVZfXA3Y@public.gmane.org>
2015-08-13 7:18 ` Rameshwar Sahu
2015-08-20 6:27 ` Vinod Koul
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