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From: "Subhransu S. Prusty" <subhransu.s.prusty@intel.com>
To: Mark Brown <broonie@kernel.org>
Cc: alsa-devel@alsa-project.org, tiwai@suse.de,
	Hardik T Shah <hardik.t.shah@intel.com>,
	lgirdwood@gmail.com, patches.audio@intel.com,
	Vinod Koul <vinod.koul@intel.com>
Subject: Re: [RFC 02/11] ASoC: Add dai_ops to set the stream tag.
Date: Tue, 28 Jun 2016 10:51:38 +0530	[thread overview]
Message-ID: <20160628052138.GI14022@subhransu-desktop> (raw)
In-Reply-To: <20160627173009.GF17217@sirena.org.uk>

On Mon, Jun 27, 2016 at 06:30:09PM +0100, Mark Brown wrote:
> On Mon, Jun 27, 2016 at 09:17:55AM +0530, Subhransu S. Prusty wrote:
> 
> > Stream tag is unique stream identifier for each HDA stream. It's
> > programmed in both host and codec to identify link the stream is
> > transported.  The platform driver allocates the stream and calls
> > this ops to program the stream tag in the codec dai.
> 
> This seems incredibly HDMI specific...  what are these tags, can we
> represent this as TDM (which seems to be what this is really)?

Hi Mark,

This is HDA specific and the tag is to support use of same DMA channel by
both host and codec.

Regards,
Subhransu

-- 

  reply	other threads:[~2016-06-28  5:25 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-27  3:47 [RFC 00/11] ASoC: hdac: Add hdac generic driver Subhransu S. Prusty
2016-06-27  3:47 ` [RFC 01/11] ALSA: hdac: Add codec helper library Subhransu S. Prusty
2016-06-27  3:47 ` [RFC 02/11] ASoC: Add dai_ops to set the stream tag Subhransu S. Prusty
2016-06-27 17:30   ` Mark Brown
2016-06-28  5:21     ` Subhransu S. Prusty [this message]
2016-06-28 11:15       ` Mark Brown
2016-06-29  4:08         ` Subhransu S. Prusty
2016-06-29 18:50           ` Mark Brown
2016-06-30  8:59             ` Subhransu S. Prusty
2016-07-05 12:54               ` Mark Brown
2016-07-08  5:27                 ` Subhransu S. Prusty
2016-06-27  3:47 ` [RFC 03/11] ALSA: hda - Add macro to test pin widget's input capability Subhransu S. Prusty
2016-06-27  3:47 ` [RFC 04/11] ASoC: hdac: Add a generic hdac driver framework Subhransu S. Prusty
2016-06-27  3:47 ` [RFC 05/11] ASoC: hdac: Create DAPM model for HDA widgets Subhransu S. Prusty
2016-06-27  3:47 ` [RFC 06/11] ASoC: dapm: Create API to add a single route element Subhransu S. Prusty
2016-06-27 18:02   ` Mark Brown
2016-06-28  5:22     ` Subhransu S. Prusty
2016-06-27  3:48 ` [RFC 07/11] ASoC: hdac: Build DAPM graph by querying through widget connection list Subhransu S. Prusty
2016-06-27  3:48 ` [RFC 08/11] ASoC: hdac: Register widget event handlers Subhransu S. Prusty
2016-06-27  3:48 ` [RFC 09/11] ALSA: hda - macro to get default config device of pin widgets Subhransu S. Prusty
2016-06-27  3:48 ` [RFC 10/11] ASoC: dapm: Export snd_soc_dapm_new_control Subhransu S. Prusty
2016-07-05 14:57   ` Applied "ASoC: dapm: Export snd_soc_dapm_new_control" to the asoc tree Mark Brown
2016-06-27  3:48 ` [RFC 11/11] ASoC: hdac: Export API to create machine controls Subhransu S. Prusty
2016-06-27  7:05 ` [RFC 00/11] ASoC: hdac: Add hdac generic driver Takashi Iwai
2016-06-28  5:13   ` Subhransu S. Prusty
2016-07-08  7:33     ` Subhransu S. Prusty
2016-07-08  7:53       ` Takashi Iwai
2016-07-08  8:21         ` Subhransu S. Prusty
2016-07-08  8:37           ` Takashi Iwai
2016-07-08  8:49             ` Subhransu S. Prusty

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