From: Lars-Peter Clausen <lars@metafoo.de>
To: Jonathan Cameron <jic23@kernel.org>,
Eugen.Hristev@microchip.com, linux-iio@vger.kernel.org
Cc: Nicolas.Ferre@microchip.com
Subject: Re: DMA support for at91-sama5d2 ADC driver
Date: Thu, 4 May 2017 18:34:19 +0200 [thread overview]
Message-ID: <a6e7d8be-2640-48b7-fe0c-bdadef84d068@metafoo.de> (raw)
In-Reply-To: <E01FD574-0ED8-4207-B589-065806ADC592@kernel.org>
On 05/04/2017 06:21 PM, Jonathan Cameron wrote:
>
>
> On 4 May 2017 14:07:19 BST, Eugen.Hristev@microchip.com wrote:
>> Hello,
>>
>> I am making a proof of concept for DMA functionality for the
>> at91-sama5d2 ADC driver.
>> I would like to ask if it's better to implement in an old fashion way
>> (request dma channel, allocate memory, start transfer), or try to
>> integrate with the DMA-buffer in the iio subsystem ?
>> Is there any driver using that system in the current kernel ?
> Lars?
I know that somebody at some point made a working implementation for the
AT91 using the generic DMAengine buffer. So that certainly is an option and
I'd recommend it.
Unfortunately their e-mail address started bouncing (probably moved jobs)
and I'm not sure if the code ever got published.
next prev parent reply other threads:[~2017-05-04 16:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-04 13:07 DMA support for at91-sama5d2 ADC driver Eugen.Hristev
2017-05-04 16:21 ` Jonathan Cameron
2017-05-04 16:34 ` Lars-Peter Clausen [this message]
2017-07-19 7:25 ` Eugen Hristev
2017-07-23 12:14 ` Jonathan Cameron
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