From: Balaji T K <balajitk-l0cyMroinI0@public.gmane.org>
To: Daniel Mack <zonque-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: joelf-l0cyMroinI0@public.gmane.org,
Gururaja Hebbar <gururaja.hebbar-l0cyMroinI0@public.gmane.org>,
"linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
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"linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"neumann-SRDuVqtxQLSzQB+pC5nmwQ@public.gmane.org"
<neumann-SRDuVqtxQLSzQB+pC5nmwQ@public.gmane.org>,
"bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org"
<bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
"vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org"
<vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
"dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org"
<dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
"Balbi, Felipe" <balbi-l0cyMroinI0@public.gmane.org>
Subject: Re: [PATCH v3] ARM: omap: edma: add suspend suspend/resume hooks
Date: Wed, 30 Oct 2013 15:19:05 +0530 [thread overview]
Message-ID: <5270D611.6070104@ti.com> (raw)
In-Reply-To: <52615A52.5070506-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
On Friday 18 October 2013 09:27 PM, Daniel Mack wrote:
> On 10/09/2013 10:14 PM, Joel Fernandes wrote:
>> On 10/09/2013 09:12 AM, Joel Fernandes wrote:
>>> On 10/09/2013 02:38 AM, Daniel Mack wrote:
>> [..]
>>>> (And the 'v3' in the subject is really my bad, sorry - I only sent one
>>>> version of this patch ever).
>>>>
>>>> I can respin the patch on top of the proper driver once all the edma
>>>> bits have eventually been moved to drivers/dma. Is anyone continuing
>>>> Matt Porter's work on this?
>>>
>>> The work is waiting on conversion of the davinci-pcm ASoC driver to DMA Engine,
>>> which once done can make exposing the private EDMA API in arch/arm/common/edma.c
>>> obsolete and we can take it to drivers/dma. Some more work to be done in edma in
>>> unifying the probe etc.
>>
>> Forgot to mention, since ASoC DMAengine conversion is not going to happen any
>> time soon considering the amount of work involved, I suggest you respin this
>> patch on the common/edma code itself. That way we can keep suspend/resume
>> working on these platforms that use EDMA till the actual conversion takes place.
>
> Ok, I also figured that the current patch does not really suffice. There
> seems to be an issue with omap_hsmmc DMA channels being disfunct after
> resume, so I'll respin it.
>
Just for the record, context save/restore of DRAE0[1] is needed for omap_hsmmc DMA
to work after resuming from low power mode.
[1]
0340h DRAE0 DMA Region Access Enable Register for Region 0
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next prev parent reply other threads:[~2013-10-30 9:49 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-01 15:04 [PATCH v3] ARM: omap: edma: add suspend suspend/resume hooks Daniel Mack
2013-10-09 4:28 ` Joel Fernandes
2013-10-09 5:13 ` Gururaja Hebbar
2013-10-09 6:03 ` Fernandes, Joel
2013-10-09 6:18 ` Gururaja Hebbar
2013-10-09 7:38 ` Daniel Mack
[not found] ` <52550809.2000407-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-10-09 14:12 ` Joel Fernandes
2013-10-09 20:14 ` Joel Fernandes
[not found] ` <5255B942.5000601-l0cyMroinI0@public.gmane.org>
2013-10-18 15:57 ` Daniel Mack
[not found] ` <52615A52.5070506-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-10-30 9:49 ` Balaji T K [this message]
2013-10-09 14:19 ` Joel Fernandes
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