From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
Shawn Guo <shawn.guo@linaro.org>,
Tabi Timur-B04825 <B04825@freescale.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 15/20] ASoC: fsl: make fsl_ssi driver compilable on ARM/IMX
Date: Tue, 6 Mar 2012 12:06:47 +0000 [thread overview]
Message-ID: <20120306120646.GH19635@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <20120306104015.GF17370@n2100.arm.linux.org.uk>
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On Tue, Mar 06, 2012 at 10:40:15AM +0000, Russell King - ARM Linux wrote:
> On Mon, Mar 05, 2012 at 12:26:36AM +0000, Mark Brown wrote:
> > On Mon, Mar 05, 2012 at 12:13:52AM +0000, Tabi Timur-B04825 wrote:
> > > To answer your question: I was lead to believe that the individual ALSA
> > > callback functions are atomic. So one thread should not be trying to
> > > start playback while another thread is simultaneously trying to stop it.
> > That's correct, there's ALSA level locking.
> Please explain which lock prevents the capture substream trigger callback
> occuring simultaneously with a playback substream trigger callback on a
> SMP system.
Oh, bother - that one is per substream not per stream. Which isn't
terribly helpful.
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From: broonie@opensource.wolfsonmicro.com (Mark Brown)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 15/20] ASoC: fsl: make fsl_ssi driver compilable on ARM/IMX
Date: Tue, 6 Mar 2012 12:06:47 +0000 [thread overview]
Message-ID: <20120306120646.GH19635@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <20120306104015.GF17370@n2100.arm.linux.org.uk>
On Tue, Mar 06, 2012 at 10:40:15AM +0000, Russell King - ARM Linux wrote:
> On Mon, Mar 05, 2012 at 12:26:36AM +0000, Mark Brown wrote:
> > On Mon, Mar 05, 2012 at 12:13:52AM +0000, Tabi Timur-B04825 wrote:
> > > To answer your question: I was lead to believe that the individual ALSA
> > > callback functions are atomic. So one thread should not be trying to
> > > start playback while another thread is simultaneously trying to stop it.
> > That's correct, there's ALSA level locking.
> Please explain which lock prevents the capture substream trigger callback
> occuring simultaneously with a playback substream trigger callback on a
> SMP system.
Oh, bother - that one is per substream not per stream. Which isn't
terribly helpful.
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next prev parent reply other threads:[~2012-03-06 12:06 UTC|newest]
Thread overview: 130+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-03 15:19 [PATCH 00/20] ASoC: add imx-sgtl5000 machine driver working with fsl_ssi Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-03 15:19 ` [PATCH 01/20] ASoC: imx: move eukrea audmux call into ASoC machine driver Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-03 15:19 ` [PATCH 02/20] ASoC: imx: move phycore " Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-03 15:19 ` [PATCH 03/20] ARM: imx: merge audmux-v1 and audmux-v2 Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-05 0:22 ` Tabi Timur-B04825
2012-03-05 0:22 ` Tabi Timur-B04825
2012-03-05 7:33 ` Shawn Guo
2012-03-05 7:33 ` Shawn Guo
2012-03-03 15:19 ` [PATCH 04/20] ARM: imx: convert audmux to a platform driver Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-04 19:00 ` Sascha Hauer
2012-03-04 19:00 ` Sascha Hauer
2012-03-05 7:35 ` Shawn Guo
2012-03-05 7:35 ` Shawn Guo
2012-03-03 15:19 ` [PATCH 05/20] ASoC: imx: move audmux driver into sound/soc/imx Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-03 15:19 ` [PATCH 06/20] ASoC: imx: rename audmux prefix mxc to imx Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-03 15:19 ` [PATCH 07/20] ASoC: imx: move SND_SOC_AC97_BUS selection down to machine driver Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-04 13:34 ` Mark Brown
2012-03-04 13:34 ` Mark Brown
2012-03-03 15:19 ` [PATCH 08/20] ASoC: imx: initialize dma_params burstsize just in imx-ssi Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-04 13:26 ` Mark Brown
2012-03-04 13:26 ` Mark Brown
2012-03-03 15:19 ` [PATCH 09/20] ASoC: imx: separate imx-pcm bits from imx-ssi driver Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-04 13:41 ` Mark Brown
2012-03-04 13:41 ` Mark Brown
2012-03-03 15:19 ` [PATCH 10/20] ASoC: imx: add an explicit Kconfig option for " Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-03 15:19 ` [PATCH 11/20] ASoC: fsl: separate SSI and DMA Kconfig options Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-03 15:19 ` [PATCH 12/20] ASoC: imx: merge sound/soc/imx into sound/soc/fsl Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-03 15:19 ` [PATCH 13/20] ASoC: fsl: create fsl_utils to accommodate the common functions Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-03 15:19 ` [PATCH 14/20] ASoC: fsl: check property 'compatible' for the machine name Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-03 15:19 ` [PATCH 15/20] ASoC: fsl: make fsl_ssi driver compilable on ARM/IMX Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-04 23:13 ` Tabi Timur-B04825
2012-03-04 23:13 ` Tabi Timur-B04825
2012-03-04 23:28 ` Russell King - ARM Linux
2012-03-04 23:28 ` Russell King - ARM Linux
2012-03-04 23:32 ` Tabi Timur-B04825
2012-03-04 23:32 ` Tabi Timur-B04825
2012-03-05 0:04 ` Russell King - ARM Linux
2012-03-05 0:04 ` Russell King - ARM Linux
2012-03-05 0:13 ` Tabi Timur-B04825
2012-03-05 0:13 ` Tabi Timur-B04825
2012-03-05 0:26 ` Mark Brown
2012-03-05 0:26 ` Mark Brown
2012-03-06 10:40 ` Russell King - ARM Linux
2012-03-06 10:40 ` Russell King - ARM Linux
2012-03-06 12:06 ` Mark Brown [this message]
2012-03-06 12:06 ` Mark Brown
2012-03-06 12:25 ` Russell King - ARM Linux
2012-03-06 12:25 ` Russell King - ARM Linux
2012-03-06 12:33 ` Mark Brown
2012-03-06 12:33 ` Mark Brown
2012-03-06 13:02 ` Tabi Timur-B04825
2012-03-06 13:02 ` Tabi Timur-B04825
2012-03-06 13:03 ` Mark Brown
2012-03-06 13:03 ` Mark Brown
2012-03-06 13:26 ` Takashi Iwai
2012-03-06 13:26 ` [alsa-devel] " Takashi Iwai
2012-03-06 13:38 ` Mark Brown
2012-03-06 13:38 ` [alsa-devel] " Mark Brown
2012-03-06 13:46 ` Takashi Iwai
2012-03-06 13:46 ` [alsa-devel] " Takashi Iwai
2012-03-06 13:52 ` Russell King - ARM Linux
2012-03-06 13:52 ` [alsa-devel] " Russell King - ARM Linux
2012-03-06 16:54 ` Mark Brown
2012-03-06 16:54 ` [alsa-devel] " Mark Brown
2012-03-06 13:46 ` Russell King - ARM Linux
2012-03-06 13:46 ` Russell King - ARM Linux
2012-03-06 10:39 ` Russell King - ARM Linux
2012-03-06 10:39 ` Russell King - ARM Linux
2012-03-05 7:39 ` Shawn Guo
2012-03-05 7:39 ` Shawn Guo
2012-03-05 12:28 ` Tabi Timur-B04825
2012-03-05 12:28 ` Tabi Timur-B04825
2012-03-05 13:40 ` Shawn Guo
2012-03-05 13:40 ` Shawn Guo
2012-03-03 15:19 ` [PATCH 16/20] ASoC: fsl: remove the fatal error checking on codec-handle Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-03 15:19 ` [PATCH 17/20] ASoC: fsl: let fsl_ssi work with imx pcm and machine drivers Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-03 15:19 ` [PATCH 18/20] ASoC: fsl: add dt support for imx-audmux Shawn Guo
2012-03-03 15:19 ` Shawn Guo
2012-03-03 15:20 ` [PATCH 19/20] ASoC: rename sgtl5000 device tree binding document Shawn Guo
2012-03-03 15:20 ` Shawn Guo
2012-03-04 13:39 ` Mark Brown
2012-03-04 13:39 ` Mark Brown
2012-03-03 15:20 ` [PATCH 20/20] ASoC: fsl: add imx-sgtl5000 machine driver Shawn Guo
2012-03-03 15:20 ` Shawn Guo
2012-03-04 13:38 ` Mark Brown
2012-03-04 13:38 ` Mark Brown
2012-03-05 8:06 ` Shawn Guo
2012-03-05 8:06 ` Shawn Guo
2012-03-05 11:56 ` Mark Brown
2012-03-05 11:56 ` Mark Brown
2012-03-05 13:07 ` Shawn Guo
2012-03-05 13:07 ` Shawn Guo
2012-03-05 13:13 ` Mark Brown
2012-03-05 13:13 ` Mark Brown
2012-03-05 16:55 ` Stephen Warren
2012-03-05 16:55 ` [alsa-devel] " Stephen Warren
2012-03-05 17:03 ` Mark Brown
2012-03-05 17:03 ` [alsa-devel] " Mark Brown
2012-03-06 18:19 ` Stephen Warren
2012-03-06 18:19 ` [alsa-devel] " Stephen Warren
2012-03-06 20:11 ` Mark Brown
2012-03-06 20:11 ` [alsa-devel] " Mark Brown
2012-03-05 16:58 ` Timur Tabi
2012-03-05 16:58 ` Timur Tabi
2012-03-05 17:32 ` Mark Brown
2012-03-05 17:32 ` Mark Brown
2012-03-04 23:34 ` Tabi Timur-B04825
2012-03-04 23:34 ` Tabi Timur-B04825
2012-03-05 8:07 ` Shawn Guo
2012-03-05 8:07 ` Shawn Guo
2012-03-04 13:32 ` [PATCH 00/20] ASoC: add imx-sgtl5000 machine driver working with fsl_ssi Mark Brown
2012-03-04 13:32 ` Mark Brown
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