From: Mark Brown <broonie@kernel.org>
To: Lars-Peter Clausen <lars@metafoo.de>
Cc: Max Filippov <jcmvbkbc@gmail.com>,
alsa-devel@alsa-project.org, Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org, Pawel Moll <pawel.moll@arm.com>,
linux-xtensa@linux-xtensa.org, Takashi Iwai <tiwai@suse.de>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Liam Girdwood <lgirdwood@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
linux-kernel@vger.kernel.org, Kumar Gala <galak@codeaurora.org>,
Grant Likely <grant.likely@linaro.org>
Subject: Re: [alsa-devel] [PATCH] ASoC: add xtensa xtfpga I2S interface and platform
Date: Tue, 28 Oct 2014 17:06:44 +0000 [thread overview]
Message-ID: <20141028170644.GC18557@sirena.org.uk> (raw)
In-Reply-To: <544FC6B1.1060002@metafoo.de>
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On Tue, Oct 28, 2014 at 05:39:13PM +0100, Lars-Peter Clausen wrote:
> On 10/28/2014 05:04 PM, Mark Brown wrote:
> >Is that going to play nicely with the fact that the interrupt can be
> >shared and the desire to (AFAICT) do NAPI style stuff with the interrupt
> >disabled for long periods?
> Threaded interrupts got support for interrupt sharing a while ago, so I
> guess yes. I think it will even work better than the tasklet approach. You
> can configure the IRQ to disable itself as long as the thread is running.
I know you *can* share threaded interrupts, I'm just not sure that
hogging the threaded handler plays nicely with other users. Though now
I look at this again tx_fifo_high is a "constant" so it's not actually
trying to do a NAPI type mitigation thing and this is really just an
open coded threaded interrupt as you say.
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next prev parent reply other threads:[~2014-10-28 17:06 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-27 19:07 [PATCH] ASoC: add xtensa xtfpga I2S interface and platform Max Filippov
2014-10-27 19:32 ` Mark Brown
2014-10-27 19:32 ` Mark Brown
2014-10-27 20:38 ` Max Filippov
2014-10-28 15:42 ` Mark Brown
2014-10-28 17:00 ` Max Filippov
2014-10-28 17:38 ` Mark Brown
2014-10-28 18:11 ` Max Filippov
2014-10-28 21:34 ` Mark Brown
2014-10-29 14:19 ` Max Filippov
2014-10-29 14:19 ` Max Filippov
2014-10-29 14:23 ` Max Filippov
2014-10-29 21:02 ` Mark Brown
2014-10-29 21:10 ` Max Filippov
2014-10-29 21:16 ` Mark Brown
2014-10-28 15:58 ` [alsa-devel] " Lars-Peter Clausen
[not found] ` <544FBD20.5000604-Qo5EllUWu/uELgA04lAiVw@public.gmane.org>
2014-10-28 16:04 ` Mark Brown
2014-10-28 16:04 ` Mark Brown
2014-10-28 16:39 ` Lars-Peter Clausen
2014-10-28 16:47 ` Takashi Iwai
2014-10-28 17:06 ` Mark Brown [this message]
2014-10-28 17:16 ` Max Filippov
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