From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Cc: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>,
alsa-devel@alsa-project.org, Lars-Peter Clausen <lars@metafoo.de>,
Mike Frysinger <vapier@gentoo.org>,
qi.wang@intel.com, Takashi Iwai <tiwai@suse.de>,
linux-kernel@vger.kernel.org, yong.y.wang@intel.com,
kok.howg.ewe@intel.com, Daniel Mack <zonque@gmail.com>,
Liam Girdwood <lrg@ti.com>,
joel.clark@intel.com
Subject: Re: [PATCH 3/3 v2] sound/soc/lapis: add platform driver for ML7213 IOH I2S
Date: Mon, 26 Dec 2011 12:12:08 +0000 [thread overview]
Message-ID: <20111226121207.GF8722@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <CANKRQng+H4NxaSLpZpYOCT-CdovxbToT-waz0JNMFT2AcD_gvA@mail.gmail.com>
On Mon, Dec 26, 2011 at 03:33:29PM +0900, Tomoya MORINAGA wrote:
> 2011/12/22 Mark Brown <broonie@opensource.wolfsonmicro.com>:
> >> Not sorted but queuing only.
> >> In sound/voice control system, queuing is not rare, I think.
> >> If necessary, though this method is very common, I can send the method
> >> of the queue.
> > No, please describe the problem you're trying to fix.
> When CPU is heavy load, this buffer is useful.
> The heavy load causes delaying receiving processing.
> If there is no buffer, stream sound/voice can be broken.
> If there is the buffer, it can prevent the broken sound.
So you're just talking about standard underflows if the application
can't keep up? There's *no* reason for your driver to do anything about
this, it's a really basic thing that affects all audio hardware. Just
write a driver for the hardware.
WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Cc: Liam Girdwood <lrg@ti.com>, Jaroslav Kysela <perex@perex.cz>,
Takashi Iwai <tiwai@suse.de>,
Lars-Peter Clausen <lars@metafoo.de>,
Dimitris Papastamos <dp@opensource.wolfsonmicro.com>,
Mike Frysinger <vapier@gentoo.org>,
Daniel Mack <zonque@gmail.com>,
alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
qi.wang@intel.com, yong.y.wang@intel.com, joel.clark@intel.com,
kok.howg.ewe@intel.com
Subject: Re: [PATCH 3/3 v2] sound/soc/lapis: add platform driver for ML7213 IOH I2S
Date: Mon, 26 Dec 2011 12:12:08 +0000 [thread overview]
Message-ID: <20111226121207.GF8722@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <CANKRQng+H4NxaSLpZpYOCT-CdovxbToT-waz0JNMFT2AcD_gvA@mail.gmail.com>
On Mon, Dec 26, 2011 at 03:33:29PM +0900, Tomoya MORINAGA wrote:
> 2011/12/22 Mark Brown <broonie@opensource.wolfsonmicro.com>:
> >> Not sorted but queuing only.
> >> In sound/voice control system, queuing is not rare, I think.
> >> If necessary, though this method is very common, I can send the method
> >> of the queue.
> > No, please describe the problem you're trying to fix.
> When CPU is heavy load, this buffer is useful.
> The heavy load causes delaying receiving processing.
> If there is no buffer, stream sound/voice can be broken.
> If there is the buffer, it can prevent the broken sound.
So you're just talking about standard underflows if the application
can't keep up? There's *no* reason for your driver to do anything about
this, it's a really basic thing that affects all audio hardware. Just
write a driver for the hardware.
next prev parent reply other threads:[~2011-12-26 12:12 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-20 2:45 [PATCH 1/3 v5] sound/soc/codecs: add LAPIS Semiconductor ML26124 Tomoya MORINAGA
2011-12-20 2:45 ` [PATCH 2/3 v4] sound/soc/lapis: add machine driver for ML7213 Carrier Board Tomoya MORINAGA
2011-12-20 10:45 ` Mark Brown
2011-12-20 10:45 ` Mark Brown
2011-12-20 2:45 ` [PATCH 3/3 v2] sound/soc/lapis: add platform driver for ML7213 IOH I2S Tomoya MORINAGA
2011-12-20 13:23 ` Mark Brown
2011-12-20 13:23 ` Mark Brown
2011-12-21 11:22 ` Tomoya MORINAGA
2011-12-21 11:22 ` Tomoya MORINAGA
2011-12-22 0:58 ` Mark Brown
2011-12-22 8:10 ` Tomoya MORINAGA
2011-12-22 10:39 ` Mark Brown
2011-12-22 10:39 ` Mark Brown
2011-12-26 6:33 ` Tomoya MORINAGA
2011-12-26 6:33 ` Tomoya MORINAGA
2011-12-26 12:12 ` Mark Brown [this message]
2011-12-26 12:12 ` Mark Brown
2011-12-27 1:25 ` Tomoya MORINAGA
2011-12-27 1:25 ` Tomoya MORINAGA
2011-12-27 17:33 ` Mark Brown
2011-12-27 17:33 ` Mark Brown
2011-12-20 10:40 ` [PATCH 1/3 v5] sound/soc/codecs: add LAPIS Semiconductor ML26124 Mark Brown
2011-12-20 10:40 ` Mark Brown
2011-12-22 8:31 ` Tomoya MORINAGA
2011-12-22 8:31 ` Tomoya MORINAGA
2011-12-22 10:50 ` Mark Brown
2011-12-22 10:50 ` Mark Brown
2011-12-20 10:42 ` Mark Brown
2011-12-20 10:42 ` Mark Brown
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