From mboxrd@z Thu Jan 1 00:00:00 1970 From: zonque@gmail.com (Daniel Mack) Date: Thu, 15 Aug 2013 17:30:44 +0200 Subject: [PATCH 00/20] ARM: pxa: move core and drivers to dmaengine In-Reply-To: <8761v7nfmh.fsf@free.fr> References: <1375889649-14638-1-git-send-email-zonque@gmail.com> <87zjsqzdg8.fsf@free.fr> <52061C53.4050905@gmail.com> <20130814100010.GO32147@intel.com> <8761v7nfmh.fsf@free.fr> Message-ID: <520CF424.2060004@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 15.08.2013 17:22, Robert Jarzmik wrote: > Vinod Koul writes: >> If you submit C, and invoke dma_async_issue_pending(), C is queued >> On B completetion, the DMA driver will start C and invoke callback for B. >> >> If B completes before C is submitted, after submit and invoking >> dma_async_issue_pending(), the C buffer will be queued and started. > OK, that settles it then. The API allows hot chaining, and if I understand > Daniel's driver properly, he already thought about it (in > append_pending_queue()). Just for the records: it's not my driver :) I just added some functions recently to make it work in DT and audio environments. > I have some homework now Daniel, I'll send you my work to include into your > patch serie for the review, and my tests of your patches. > > I need a bit of time (1 or 2 weeks), because of holidays, for my patch. Great, thanks a lot. I extracted some of the patches of my set to individual trees so they can be merged for 3.12. I'll rebase my series once 3.12-rc1 is released. Many thanks for your help, Daniel