Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751831AbaG1GNg (ORCPT ); Mon, 28 Jul 2014 02:13:36 -0400 Received: from devils.ext.ti.com ([198.47.26.153]:57052 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750953AbaG1GNd (ORCPT ); Mon, 28 Jul 2014 02:13:33 -0400 Message-ID: <53D5E9F8.4030401@ti.com> Date: Mon, 28 Jul 2014 09:13:12 +0300 From: Peter Ujfalusi User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: , , CC: , , , , Subject: Re: [PATCH 0/2] dma: edma: Allow to disable eDMA IRQ during cyclic transfer References: <1405513761-23739-1-git-send-email-peter.ujfalusi@ti.com> In-Reply-To: <1405513761-23739-1-git-send-email-peter.ujfalusi@ti.com> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/16/2014 03:29 PM, Peter Ujfalusi wrote: > Hi, > > After this series clients can ask to not receive notifications after each period. > In this case we can disable the completion interrupt since the position reporting > does not rely on it for cyclic mode. > Patchset for ASoC part has been sent which allows users space to take adventage > of SNDRV_PCM_INFO_NO_PERIOD_WAKEUP: > [1] http://mailman.alsa-project.org/pipermail/alsa-devel/2014-July/078993.html ping. > When both series applied on top of linux-next: > > # cache the audio file in memory > cat some_music.mp3 > /dev/null > # start PA > pulseaudio -v > # in another terminal, play the music via PA > mplayer -ao pulse some_music.mp3 > # yet another terminal to monitor the interrupts > watch cat /proc/interrupts > # note the non increasing number of edma interrupts ;) > > Regards, > Peter > --- > Peter Ujfalusi (2): > dma: edma: Update caps->residue_granularity to match with reality > dma: edma: Support to suppress the period interrupts in cyclic mode > > drivers/dma/edma.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > -- P?ter -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/