From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Ujfalusi Subject: Re: [PATCH 0/3] ARM/dma: edma: Serve cyclic clients via high priority queue Date: Mon, 28 Jul 2014 09:12:31 +0300 Message-ID: <53D5E9CF.10706@ti.com> References: <1404816398-12338-1-git-send-email-peter.ujfalusi@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <1404816398-12338-1-git-send-email-peter.ujfalusi-l0cyMroinI0@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: Errors-To: davinci-linux-open-source-bounces-VycZQUHpC/PFrsHnngEfi1aTQe2KTcn/@public.gmane.org To: nsekhar-l0cyMroinI0@public.gmane.org, joelf-l0cyMroinI0@public.gmane.org, vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org Cc: davinci-linux-open-source-VycZQUHpC/PFrsHnngEfi1aTQe2KTcn/@public.gmane.org, linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: linux-omap@vger.kernel.org On 07/08/2014 01:46 PM, Peter Ujfalusi wrote: > Hi, > = > It is preferred that audio is served with the highest priority queue in o= rder to > avoid delays in data transfer between memory and audio IP. > = > The following series will add an API to arch code to assign a channel to = a given > queue. > The default queue is changed from 0 (highest priority) to lowest priority. > In the dmaengine driver we move the cyclic channel to queue0 (highest pri= ority) > and move it back to default queue when the channel is terminated. ping? > = > Regards, > Peter > --- > Peter Ujfalusi (3): > ARM: edma: Set default queue to lowest priority > ARM: edma: Add edma_assign_channel_eventq() to move channel to a give > queue > dma: edma: Serve cyclic (audio) channels with high priority queue > = > arch/arm/common/edma.c | 31 ++++++++++++++++++++++++++++++- > drivers/dma/edma.c | 8 ++++++++ > include/linux/platform_data/edma.h | 2 ++ > 3 files changed, 40 insertions(+), 1 deletion(-) > = -- = P=E9ter