From: Peter Ujfalusi <peter.ujfalusi@ti.com>
To: Mike Looijmans <mike.looijmans@topic.nl>, alsa-devel@alsa-project.org
Subject: Re: [PATCH 0/5] ASoC: davinci: Use edma-pcm and remove davinci-pcm
Date: Thu, 5 Mar 2015 12:48:48 +0200 [thread overview]
Message-ID: <54F83490.9010208@ti.com> (raw)
In-Reply-To: <54F833B1.1070204@ti.com>
On 03/05/2015 12:45 PM, Peter Ujfalusi wrote:
> OK, this is also supported by the edma-pcm, you need to enable the FIFO and
> specify the threshold.
Via edma-pcm you can disable the period interrupts so for example PA can work
in this mode. You have big enough buffer and you do not get any interrupts
during audio, just user space timer to check the audio status every now and then.
This was not possible with the davinci-pcm.
>> I use a 4MB buffer for that 16-channels-of-32-bits system, usually with 8
>> periods of 512kB each.
>
> Glad to hear, if you ever need to update the kernel, the edma-pcm conversion
> will not going to cause you regression ;)
>
>> Met vriendelijke groet / kind regards,
>>
>> Mike Looijmans
>> System Expert
>>
>>
>> TOPIC Embedded Systems
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>> E-mail: mike.looijmans@topic.nl
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>>
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>>
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>>
>
>
--
Péter
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next prev parent reply other threads:[~2015-03-05 10:48 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-03 14:45 [PATCH 0/5] ASoC: davinci: Use edma-pcm and remove davinci-pcm Peter Ujfalusi
2015-03-03 14:45 ` Peter Ujfalusi
2015-03-03 14:45 ` [PATCH 1/5] ASoC: davinci: Select SND_EDMA_SOC when SND_DAVINCI_SOC is enabled Peter Ujfalusi
2015-03-03 14:45 ` Peter Ujfalusi
2015-03-03 14:45 ` [PATCH 2/5] ASoC: davinci-i2s: Convert to use edma-pcm Peter Ujfalusi
2015-03-03 14:45 ` Peter Ujfalusi
2015-03-03 14:45 ` [PATCH 3/5] ASoC: davinci-vcif: " Peter Ujfalusi
2015-03-03 14:45 ` Peter Ujfalusi
2015-03-03 14:45 ` [PATCH 4/5] ASoC: davinci-mcasp: Deprecate the use of davinci-pcm in favor of edma-pcm Peter Ujfalusi
2015-03-03 14:45 ` Peter Ujfalusi
2015-03-03 14:45 ` [PATCH 5/5] ASoC: davinci: Remove unused davinci-pcm platform driver Peter Ujfalusi
2015-03-03 14:45 ` Peter Ujfalusi
2015-03-04 6:19 ` [PATCH 0/5] ASoC: davinci: Use edma-pcm and remove davinci-pcm Mike Looijmans
2015-03-04 8:49 ` Peter Ujfalusi
2015-03-04 12:28 ` Mike Looijmans
2015-03-04 14:10 ` Peter Ujfalusi
2015-03-05 9:43 ` Mike Looijmans
2015-03-05 10:45 ` Peter Ujfalusi
2015-03-05 10:48 ` Peter Ujfalusi [this message]
2015-03-04 17:26 ` Mark Brown
2015-03-04 17:26 ` Mark Brown
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