From: Mark Brown <broonie@kernel.org>
To: Lars-Peter Clausen <lars@metafoo.de>
Cc: Linux-ALSA <alsa-devel@alsa-project.org>,
Russell King <linux@arm.linux.org.uk>,
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>,
Liam Girdwood <lgirdwood@gmail.com>, Simon <horms@verge.net.au>,
Kuninori Morimoto <kuninori.morimoto.gx@gmail.com>
Subject: Re: [PATCH 0/27]: ASoC: rsnd: add Renesas Gen2 DMAEngine support
Date: Tue, 28 Jan 2014 12:37:43 +0000 [thread overview]
Message-ID: <20140128123743.GM11841@sirena.org.uk> (raw)
In-Reply-To: <52E79D45.5090301@metafoo.de>
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On Tue, Jan 28, 2014 at 01:06:29PM +0100, Lars-Peter Clausen wrote:
> The virt_dma helper functions already take care of some of the cyclic
> specific details. And more can probably be added. E.g. what comes to mind is
> the tracking of whether a descriptor is cyclic and which segment of the
> descriptor to submit next. All users of virt_dma already implement these in
> almost the same fashion. So this would not only to allow to factor out the
> handling for the cyclic case, but also for the non cyclic case. And for all
> users of those helpers cyclic support would essentially be free.
OK, I had a brief look and that does seem like the way forwards - I had
been remembering the last time this was discussed when the DMA guys were
pretty uncomfortable with the idea of doing things there but it seems
things are different now.
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next prev parent reply other threads:[~2014-01-28 12:37 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-24 2:36 [PATCH 0/27]: ASoC: rsnd: add Renesas Gen2 DMAEngine support Kuninori Morimoto
2014-01-24 2:37 ` [PATCH 01/27] ASoC: rsnd: tidyup register naming of BUSIF_MODE Kuninori Morimoto
2014-01-24 2:38 ` [PATCH 02/27] ASoC: rsnd: cleanup debug information method Kuninori Morimoto
2014-01-24 2:38 ` [PATCH 03/27] ASoC: rsnd: remove meaningless rsnd_ssi_non() Kuninori Morimoto
2014-01-24 2:38 ` [PATCH 04/27] ASoC: rsnd: control SCU ops in probe timing Kuninori Morimoto
2014-01-24 2:38 ` [PATCH 05/27] ASoC: rsnd: add rsnd_scu_init(), and separate init/start Kuninori Morimoto
2014-01-24 2:38 ` [PATCH 06/27] ASoC: rsnd: remove meaningless function parameter Kuninori Morimoto
2014-01-24 2:38 ` [PATCH 07/27] ASoC: rsnd: merge rsnd_scu_start/stop() and rsnd_scu_transfer_start/stop() Kuninori Morimoto
2014-01-24 2:39 ` [PATCH 08/27] ASoC: rsnd: rsnd_dai_is_clk_master() can be shared Kuninori Morimoto
2014-01-24 2:39 ` [PATCH 09/27] ASoC: rsnd: remove pin sync option Kuninori Morimoto
2014-01-24 2:39 ` [PATCH 10/27] ASoC: rsnd: SSI_MODE0/1 settings goes to scu.c Kuninori Morimoto
2014-01-24 2:39 ` [PATCH 11/27] ASoC: rsnd: remove ssiu from ssi.c Kuninori Morimoto
2014-01-24 2:39 ` [PATCH 12/27] ASoC: rsnd: rename rsnd_scu_convert_rate_ctrl() Kuninori Morimoto
2014-01-24 2:39 ` [PATCH 13/27] ASoC: rsnd: explain SRC bypass mode settings in comment Kuninori Morimoto
2014-01-27 19:45 ` Mark Brown
2014-01-28 0:28 ` Kuninori Morimoto
2014-01-28 11:14 ` Mark Brown
2014-01-24 2:40 ` [PATCH 14/27] ASoC: rsnd: remove duplicate *priv from rsnd_dma Kuninori Morimoto
2014-01-24 2:40 ` [PATCH 15/27] ASoC: rsnd: non 0 is error on probe Kuninori Morimoto
2014-01-24 2:40 ` [PATCH 16/27] ASoC: rsnd: fixup Gen2 module naming Kuninori Morimoto
2014-01-24 2:40 ` [PATCH 17/27] ASoC: rsnd: don't use schedule_work() when rsnd_dma_start() Kuninori Morimoto
2014-01-24 2:40 ` [PATCH 18/27] ASoC: rsnd: SCU should be called before SSI Kuninori Morimoto
2014-01-24 2:40 ` [PATCH 19/27] ASoC: rsnd: clarify scu.c area Kuninori Morimoto
2014-01-24 2:40 ` [PATCH 20/27] ASoC: rsnd: Merge macros in scu.c Kuninori Morimoto
2014-01-24 2:40 ` [PATCH 21/27] ASoC: rsnd: rsnd_scu_hpbif_is_enable() become macro Kuninori Morimoto
2014-01-24 2:41 ` [PATCH 22/27] ASoC: rsnd: merge SRC clock timing/setting Kuninori Morimoto
2014-01-24 2:41 ` [PATCH 23/27] ASoC: rsnd: add rsnd_ssi_is_play() Kuninori Morimoto
2014-01-24 2:41 ` [PATCH 24/27] ASoC: rsnd: extracts Gen1/Gen2 common parts Kuninori Morimoto
2014-01-24 2:41 ` [PATCH 25/27] ASoC: rsnd: remove SSI dependent DMAEngine callback Kuninori Morimoto
2014-01-24 2:41 ` [PATCH 26/27] ASoC: rsnd: rsnd_ssi_probe() goes forwarder than rsnd_scu_probe() Kuninori Morimoto
2014-01-24 2:42 ` [PATCH 27/27] ASoC: rsnd: add Gen2 SRC and DMAEngine support Kuninori Morimoto
2014-01-27 17:50 ` [PATCH 0/27]: ASoC: rsnd: add Renesas Gen2 " Ben Dooks
2014-01-28 0:34 ` Kuninori Morimoto
2014-01-28 0:58 ` Kuninori Morimoto
2014-01-27 19:49 ` Mark Brown
2014-01-28 0:30 ` Kuninori Morimoto
2014-01-28 7:35 ` Lars-Peter Clausen
2014-01-28 11:34 ` Mark Brown
2014-01-28 12:06 ` Lars-Peter Clausen
2014-01-28 12:37 ` Mark Brown [this message]
2014-01-28 13:05 ` Russell King - ARM Linux
2014-01-28 13:20 ` Lars-Peter Clausen
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