Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933425AbaGPM3m (ORCPT ); Wed, 16 Jul 2014 08:29:42 -0400 Received: from arroyo.ext.ti.com ([192.94.94.40]:47315 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933219AbaGPM3g (ORCPT ); Wed, 16 Jul 2014 08:29:36 -0400 From: Peter Ujfalusi To: , , CC: , , , , Subject: [PATCH 0/2] dma: edma: Allow to disable eDMA IRQ during cyclic transfer Date: Wed, 16 Jul 2014 15:29:19 +0300 Message-ID: <1405513761-23739-1-git-send-email-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.0.0 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 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(-) -- 2.0.0 -- 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/