From mboxrd@z Thu Jan 1 00:00:00 1970 From: Balaji T K Subject: Re: [PATCH v3] ARM: omap: edma: add suspend suspend/resume hooks Date: Wed, 30 Oct 2013 15:19:05 +0530 Message-ID: <5270D611.6070104@ti.com> References: <1380639886-9526-1-git-send-email-zonque@gmail.com> <5254DB86.4000104@ti.com>,<5254E60F.80009@ti.com> <5254F54D.7060709@ti.com> <52550809.2000407@gmail.com> <52556467.7010400@ti.com> <5255B942.5000601@ti.com> <52615A52.5070506@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <52615A52.5070506-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Daniel Mack Cc: joelf-l0cyMroinI0@public.gmane.org, Gururaja Hebbar , "linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "neumann-SRDuVqtxQLSzQB+pC5nmwQ@public.gmane.org" , "bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org" , "vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org" , "dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org" , "Balbi, Felipe" List-Id: linux-omap@vger.kernel.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 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html