From: Lars-Peter Clausen <lars@metafoo.de>
To: Phil Reid <preid@electromag.com.au>,
"linux-iio@vger.kernel.org" <linux-iio@vger.kernel.org>
Subject: Re: multi-planar buffers
Date: Fri, 1 Jul 2016 11:53:43 +0200 [thread overview]
Message-ID: <57763DA7.2010800@metafoo.de> (raw)
In-Reply-To: <595f2eb9-524d-2bb9-6e74-2cacc155a07c@electromag.com.au>
On 06/28/2016 11:04 AM, Phil Reid wrote:
> I'm interested in multi-planar buffers for and ADC that does multiple
> parallel dma transactions.
> Raised the question about 6 months ago and it was something for which Lars
> said support was needed at some point.
> At the time he suggested that it was best implemented with the mmap support
> which still doesn't look to be upstream correct?
>
> The mmap is also of interest to us due to the potential number of channels
> and high sample rates.
> Is the work stalled on getting this into the kernel?
>
> Could someone point me to where the latest mmap code is so I can look at
> integrating multi-planar buffers into it for our driver.
>
> If there something I can do to help get the mmap code into the kernel as
> well I'm happy to have a go with a bit of guidance.
Hi,
No progress on the upstream of the mmap code at the moment, sorry. The
latest code is here:
https://github.com/analogdevicesinc/linux/tree/xcomm_zynq/drivers/iio but
probably needs some serious rework before it is ready for upstream submission.
Among other things to support the multi-planar buffers the structure layout
for the buffer meta data needs to be changed.
- Lars
prev parent reply other threads:[~2016-07-01 9:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-28 9:04 multi-planar buffers Phil Reid
2016-07-01 9:53 ` Lars-Peter Clausen [this message]
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