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From: Vinod Koul <vinod.koul@intel.com>
To: Takashi Iwai <tiwai@suse.de>
Cc: alsa-devel@alsa-project.org, patches.audio@intel.com,
	Hardik T Shah <hardik.t.shah@intel.com>,
	Guneshwor Singh <guneshwor.o.singh@intel.com>,
	liam.r.girdwood@linux.intel.com, broonie@kernel.org,
	kbuild-all@01.org
Subject: Re: [PATCH 2/3] ALSA - hda: Add support for link audio time reporting
Date: Fri, 15 Jul 2016 11:20:25 +0530	[thread overview]
Message-ID: <20160715055024.GO9681@localhost> (raw)
In-Reply-To: <s5hbn1zcvei.wl-tiwai@suse.de>

On Fri, Jul 15, 2016 at 07:39:17AM +0200, Takashi Iwai wrote:
> > 
> > So dependency is around convert_art_to_tsc() which is x86 API.
> 
> How is defined in the spec?  I wonder it because HD-audio spec itself
> is usually CPU-neutral.

You are right. HDA spec is not x86 specfic. HDA counter report the value
of ART counter for a time snapshot.

The problem is we do not get TSC value from HDA controller :(

So we need to use asm code for conversion..

Thanks
-- 
~Vinod

  reply	other threads:[~2016-07-15  5:43 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-11 10:13 [PATCH 0/3] ALSA - hda: Add support for link audio time reporting Vinod Koul
2016-07-11 10:13 ` [PATCH 1/3] ALSA - hda: Add support for GTS capability Vinod Koul
2016-07-11 10:22   ` Takashi Iwai
2016-07-11 14:07     ` Vinod Koul
2016-07-11 14:06       ` Takashi Iwai
2016-07-11 14:22         ` Vinod Koul
2016-07-11 14:17           ` Takashi Iwai
2016-07-11 10:13 ` [PATCH 2/3] ALSA - hda: Add support for link audio time reporting Vinod Koul
2016-07-11 10:32   ` Takashi Iwai
2016-07-11 14:11     ` Vinod Koul
     [not found]   ` <201607111916.R5HdrB76%fengguang.wu@intel.com>
2016-07-15  4:37     ` Vinod Koul
2016-07-15  5:00       ` Takashi Iwai
2016-07-15  5:19         ` Vinod Koul
2016-07-15  5:17           ` Takashi Iwai
2016-07-15  5:39             ` Vinod Koul
2016-07-15  5:39               ` Takashi Iwai
2016-07-15  5:50                 ` Vinod Koul [this message]
2016-07-15  5:56                   ` Takashi Iwai
2016-07-11 10:13 ` [PATCH 3/3] ALSA - hda: Fix timestamping documentation Vinod Koul
2016-07-11 10:46   ` Takashi Iwai
2016-07-11 14:12     ` Vinod Koul

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