From: Mark Brown <broonie@kernel.org>
To: Takashi Iwai <tiwai@suse.de>
Cc: Liam Girdwood <liam.r.girdwood@linux.intel.com>,
"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Nenghua Cao <nhcao@marvell.com>
Subject: Re: [alsa-devel] [PATCH] ASoC: dpcm: don't do hw_param when BE has done hw_param
Date: Sat, 11 Jan 2014 12:08:26 +0000 [thread overview]
Message-ID: <20140111120826.GS29039@sirena.org.uk> (raw)
In-Reply-To: <s5hzjn2n9ne.wl%tiwai@suse.de>
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On Sat, Jan 11, 2014 at 10:35:33AM +0100, Takashi Iwai wrote:
> But, the point is that basically we already know that something is
> wrong at the point BE2 setting up an incompatible hw_params; then it
> should be notified properly to FE1, or the incompatible change must be
> handled as an error. This is the missing piece in the current
> implementation. The skip of redundant BE hw_params call can be
> implemented as an optimization in this compatibility check, too.
Only in the case where they actually are incompatible though - if
there's DSP in place which can do suitable mixing it's not an issue.
At the minute the core is relying on the drivers handling any limits
just like with the CODECs.
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next prev parent reply other threads:[~2014-01-11 12:08 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-10 5:36 [PATCH] ASoC: dpcm: don't do hw_param when BE has done hw_param Nenghua Cao
2014-01-10 5:36 ` Nenghua Cao
2014-01-10 10:55 ` [alsa-devel] " Takashi Iwai
2014-01-10 10:55 ` Takashi Iwai
2014-01-10 11:21 ` Nenghua Cao
2014-01-10 11:21 ` [alsa-devel] " Nenghua Cao
2014-01-10 11:47 ` Liam Girdwood
2014-01-10 11:59 ` Nenghua Cao
2014-01-10 12:01 ` Takashi Iwai
2014-01-10 12:22 ` Nenghua Cao
2014-01-10 12:22 ` [alsa-devel] " Nenghua Cao
2014-01-10 13:34 ` Takashi Iwai
2014-01-10 12:29 ` Liam Girdwood
2014-01-10 12:51 ` Nenghua Cao
2014-01-10 12:51 ` [alsa-devel] " Nenghua Cao
2014-01-10 13:46 ` Takashi Iwai
2014-01-10 18:43 ` Liam Girdwood
2014-01-11 9:35 ` Takashi Iwai
2014-01-11 9:35 ` [alsa-devel] " Takashi Iwai
2014-01-11 12:08 ` Mark Brown [this message]
2014-01-13 10:48 ` Liam Girdwood
2014-01-13 10:57 ` Takashi Iwai
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