From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Eduardo Valentin <eduardo.valentin@nokia.com>
Cc: "linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
"alsa-devel@vger.kernel.org" <alsa-devel@vger.kernel.org>,
Jarkko Nikula <jhnikula@gmail.com>,
"Nurkkala Eero.An (EXT-Offcode/Oulu)"
<ext-Eero.Nurkkala@nokia.com>,
"Ujfalusi Peter (Nokia-D/Tampere)" <peter.ujfalusi@nokia.com>
Subject: Re: [PATCH 11/20] OMAP: McBSP: Add link DMA mode selection
Date: Thu, 30 Jul 2009 14:47:25 +0100 [thread overview]
Message-ID: <20090730134725.GA29631@rakim.wolfsonmicro.main> (raw)
In-Reply-To: <20090730132808.GA22978@esdhcp037198.research.nokia.com>
On Thu, Jul 30, 2009 at 04:28:08PM +0300, Eduardo Valentin wrote:
> On Thu, Jul 30, 2009 at 03:04:42PM +0200, ext Mark Brown wrote:
> > Is this really something that people would want to tweak at runtime
> > (except for test purposes)?
> Yes, test purposes, bug also, the same link could be sometime used for low-power
> playback while sometime for low-latency processing where as accurate as
> possible DMA pointer position info is needed.
Latency you *should* be able to infer from the application behaviour.
next prev parent reply other threads:[~2009-07-30 13:47 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-30 12:49 [PATCH 00/20] OMAP ASoC changes in DMA utilization Eduardo Valentin
2009-07-30 12:49 ` [PATCH 01/20] OMAP: McBSP: Provide functions for ASoC frame syncronization Eduardo Valentin
2009-07-30 12:49 ` [PATCH 02/20] OMAP: McBSP: Wakeups utilized Eduardo Valentin
2009-07-30 12:49 ` [PATCH 03/20] OMAP: McBSP: Change wakeup signals Eduardo Valentin
2009-07-30 12:49 ` [PATCH 04/20] OMAP: McBSP: Add IRQEN, IRQSTATUS, THRESHOLD2 and THRESHOLD1 registers Eduardo Valentin
2009-07-30 12:49 ` [PATCH 05/20] OMAP: McBSP: Retain McBSP FCLK clockactivity Eduardo Valentin
2009-07-30 12:49 ` [PATCH 06/20] OMAP: McBSP: Use appropriate value for startup delay Eduardo Valentin
2009-07-30 12:49 ` [PATCH 07/20] OMAP: McBSP: Add transmit/receive threshold handler Eduardo Valentin
2009-07-30 12:49 ` [PATCH 08/20] OMAP: McBSP: Create and export max_(r|t)x_thres property Eduardo Valentin
2009-07-30 12:49 ` [PATCH 09/20] OMAP3: McBSP: Lower the maximum buffersize for McBSP1,3,4,5 Eduardo Valentin
2009-07-30 12:49 ` [PATCH 10/20] OMAP: McBSP: Rename thres sysfs symbols Eduardo Valentin
2009-07-30 12:49 ` [PATCH 11/20] OMAP: McBSP: Add link DMA mode selection Eduardo Valentin
2009-07-30 12:49 ` [PATCH 12/20] OMAP: McBSP: Configure NO IDLE mode for DMA mode different of threshold Eduardo Valentin
2009-07-30 12:49 ` [PATCH 13/20] OMAP: McBSP: Do not enable wakeups for no-idle mode Eduardo Valentin
2009-07-30 12:49 ` [PATCH 14/20] OMAP: McBSP: Disable all wakeups upon exit Eduardo Valentin
2009-07-30 12:49 ` [PATCH 15/20] OMAP: McBSP: Let element DMA mode hit retention also Eduardo Valentin
2009-07-30 12:49 ` [PATCH 16/20] ASoC: OMAP: Use McBSP threshold again Eduardo Valentin
2009-07-30 12:49 ` [PATCH 17/20] ASoC: OMAP: Make DMA 64 aligned Eduardo Valentin
2009-07-30 12:49 ` [PATCH 18/20] ASoC: OMAP: Enable DMA burst mode Eduardo Valentin
2009-07-30 12:49 ` [PATCH 19/20] ASoC: OMAP: Use DMA operating mode of McBSP Eduardo Valentin
2009-07-30 12:49 ` [PATCH 20/20] ASoC: Always syncronize audio transfers on frames Eduardo Valentin
2009-07-30 18:57 ` Jarkko Nikula
2009-08-05 7:48 ` [PATCH 16/20] ASoC: OMAP: Use McBSP threshold again Jarkko Nikula
2009-08-10 8:53 ` Eduardo Valentin
2009-08-11 5:34 ` Jarkko Nikula
2009-08-11 6:22 ` Eduardo Valentin
2009-08-06 12:00 ` [PATCH 12/20] OMAP: McBSP: Configure NO IDLE mode for DMA mode different of threshold Eduardo Valentin
2009-07-30 13:04 ` [PATCH 11/20] OMAP: McBSP: Add link DMA mode selection Mark Brown
2009-07-30 13:28 ` Eduardo Valentin
2009-07-30 13:47 ` Mark Brown [this message]
2009-08-03 10:15 ` Eduardo Valentin
2009-08-05 7:39 ` Jarkko Nikula
2009-08-05 8:58 ` Peter Ujfalusi
2009-08-06 18:15 ` [alsa-devel] " ext-Eero.Nurkkala
2009-08-07 13:11 ` Eduardo Valentin
2009-08-11 6:04 ` Jarkko Nikula
2009-08-11 6:18 ` [alsa-devel] " Eero Nurkkala
2009-08-12 11:45 ` Jarkko Nikula
2009-08-12 11:48 ` [alsa-devel] " Eero Nurkkala
2009-08-13 6:01 ` Peter Ujfalusi
2009-07-30 18:57 ` [PATCH 09/20] OMAP3: McBSP: Lower the maximum buffersize for McBSP1,3,4,5 Jarkko Nikula
2009-07-31 7:58 ` Eduardo Valentin
2009-07-31 17:26 ` Jarkko Nikula
2009-08-03 8:11 ` Eduardo Valentin
2009-08-03 8:36 ` Jarkko Nikula
2009-08-03 8:36 ` Eduardo Valentin
2009-08-06 12:10 ` [PATCH 07/20] OMAP: McBSP: Add transmit/receive threshold handler Tony Lindgren
2009-08-06 12:20 ` ext-Eero.Nurkkala
2009-08-06 12:24 ` Tony Lindgren
2009-07-30 18:56 ` [PATCH 06/20] OMAP: McBSP: Use appropriate value for startup delay Jarkko Nikula
2009-07-31 7:21 ` ext-Eero.Nurkkala
2009-07-31 17:25 ` Jarkko Nikula
2009-08-05 7:40 ` [PATCH 03/20] OMAP: McBSP: Change wakeup signals Peter Ujfalusi
2009-07-30 18:56 ` [PATCH 02/20] OMAP: McBSP: Wakeups utilized Jarkko Nikula
2009-07-31 7:56 ` Eduardo Valentin
2009-08-06 12:05 ` Tony Lindgren
2009-08-06 12:00 ` Eduardo Valentin
2009-08-06 12:00 ` Tony Lindgren
2009-08-06 12:02 ` Tony Lindgren
2009-08-06 11:56 ` Eduardo Valentin
2009-08-05 7:18 ` [PATCH 01/20] OMAP: McBSP: Provide functions for ASoC frame syncronization Peter Ujfalusi
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