linux-kernel - Re: [alsa-devel] [PATCH v4 1/3] ASoC: samsung: Add machine driver for Trats2

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20150127184808.GK21293@sirena.org.uk>
Date:	Tue, 27 Jan 2015 18:48:08 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Sylwester Nawrocki <s.nawrocki@...sung.com>
Cc:	Inha Song <ideal.song@...sung.com>, alsa-devel@...a-project.org,
	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	linux@....linux.org.uk, kgene@...nel.org, sbkim73@...sung.com,
	lgirdwood@...il.com, perex@...ex.cz, tiwai@...e.de,
	grant.likely@...aro.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org
Subject: Re: [alsa-devel] [PATCH v4 1/3] ASoC: samsung: Add machine driver
 for Trats2

On Tue, Jan 27, 2015 at 06:09:39PM +0100, Sylwester Nawrocki wrote:
> On 23/01/15 06:03, Inha Song wrote:

> > +	priv->clk_mclk =  of_clk_get_by_name(codec_node, "MCLK1");
> > +	if (IS_ERR(priv->clk_mclk)) {
> > +		dev_err(&pdev->dev, "Failed to get mclk clock\n");
> > +		of_node_put(codec_node);
> > +		return PTR_ERR(priv->clk_mclk);
> > +	}

> Wouldn't it also work if we added clock handling into the wm8994 codec
> driver instead? Not sure if it is correct to retrieve the codec's clock
> in the machine driver like this. Or perhaps the MCLK1 (SoC CLKOUT) clock
> should be added to the sound DT node and handled only by the machine
> driver, together with the other (MCLK2) clock?

That's definitely where we should end up but there are practical issues
with that approach since it involves coordination with all the machine
drivers using the device.

Download attachment "signature.asc" of type "application/pgp-signature" (474 bytes)