Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Tue, 31 Jul 2018 11:19:43 +0100
From:   Mark Brown <broonie@kernel.org>
To:     Takashi Iwai <tiwai@suse.de>
Cc:     "Agrawal, Akshu" <Akshu.Agrawal@amd.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
        "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..." 
        <alsa-devel@alsa-project.org>, Alexander.Deucher@amd.com,
        djkurtz@chromium.org, Liam Girdwood <lgirdwood@gmail.com>,
        open list <linux-kernel@vger.kernel.org>
Subject: Re: [alsa-devel] [PATCH] ASoC: soc-pcm: Use delay set in pointer
 function
Message-ID: <20180731101943.GB5719@sirena.org.uk>
References: <1532686422-1790-1-git-send-email-akshu.agrawal@amd.com>
 <66c8b8c4-bdd0-0129-5e5b-850890cfdb8d@linux.intel.com>
 <e0990b62-897c-6dc7-8ac9-296932c505b7@amd.com>
 <dd4d3dc6-88f3-d53f-cd5c-5035c80be3da@linux.intel.com>
 <s5hy3dsviwq.wl-tiwai@suse.de>
 <20180730155030.GP5789@sirena.org.uk>
 <7a88c7b4-d31d-b044-bb8e-a866d49d1256@amd.com>
 <s5hwotc0y6v.wl-tiwai@suse.de>
 <5b3249cb-6212-6a14-b644-7548cf0ad00c@amd.com>
 <s5ha7q721vs.wl-tiwai@suse.de>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha512;
        protocol="application/pgp-signature"; boundary="U+BazGySraz5kW0T"
Content-Disposition: inline
In-Reply-To: <s5ha7q721vs.wl-tiwai@suse.de>
User-Agent: Mutt/1.10.0 (2018-05-17)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk


--U+BazGySraz5kW0T
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

On Tue, Jul 31, 2018 at 11:25:11AM +0200, Takashi Iwai wrote:

> It's not necessary that all CPU dais provide the pointer callback.
> My suggestion is that, if CPU dai *wants* to provide the base delay,
> it must be tied with the position value, hence it should provide the
> pointer callback.  If CPU dai has a pointer callback,
> snd_soc_pcm_pointer() skips the component pointer callback but uses
> CPU dai pointer callback instead.

However since it's not supposed to be providing any DMA a CPU DAI really
shouldn't be doing this...

--U+BazGySraz5kW0T
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----

iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAltgN74ACgkQJNaLcl1U
h9CQ4gf/RXoOOGmwEbj68LmfJRHuo044hHK6wY62bwec5FoeGWMy9Pk3rvq7tvHc
f/7DFEYQRTB/d4cyEDUQiqm1eHIFhI8sohOWaRWJr28k8eQYkM1uA8KxJ5b11OF3
LQKCNqhLjVYpi+MgVJAe4OqE4t3B5tCwVzXfBZsI2zFeFBJztMYw9gcly/dpIhVt
3PVTpXzPcQckxgu/e9Edc5lOmEEL9uid+xEH0jpgq8I1OI1gBu/pJqME3+N/iGwF
SetGm1Z53pPTbn1+Kxy5PLnrSuxbKEB3pPxnIJOHCIlGnwaTzbzg0iTPg545fh35
fK6d90zXpQBsJr6i4clAskVJAoZEOA==
=S/fZ
-----END PGP SIGNATURE-----

--U+BazGySraz5kW0T--