linux-kernel - Re: [PATCH v2 1/3] ASoC: hdmi-codec: Add event handler for hdmi TX

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <6456e0b7-08ae-4515-a7c9-734f50c9130a@sirena.org.uk>
Date: Fri, 6 Dec 2024 16:06:45 +0000
From: Mark Brown <broonie@...nel.org>
To: Jiaxin Yu (俞家鑫) <Jiaxin.Yu@...iatek.com>
Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
	"ajye_huang@...pal.corp-partner.google.com" <ajye_huang@...pal.corp-partner.google.com>,
	Chunxu Li (李春旭) <Chunxu.Li@...iatek.com>,
	Allen-KH Cheng (程冠勲) <Allen-KH.Cheng@...iatek.com>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"kuninori.morimoto.gx@...esas.com" <kuninori.morimoto.gx@...esas.com>,
	"andrzej.hajda@...el.com" <andrzej.hajda@...el.com>,
	"linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>,
	Project_Global_Chrome_Upstream_Group <Project_Global_Chrome_Upstream_Group@...iatek.com>,
	"robert.foss@...aro.org" <robert.foss@...aro.org>,
	"Laurent.pinchart@...asonboard.com" <Laurent.pinchart@...asonboard.com>,
	"neil.armstrong@...aro.org" <neil.armstrong@...aro.org>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Nicolas Prado <nfraprado@...labora.com>,
	"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>
Subject: Re: [PATCH v2 1/3] ASoC: hdmi-codec: Add event handler for hdmi TX

On Fri, Dec 06, 2024 at 03:39:15PM +0000, Jiaxin Yu (俞家鑫) wrote:
> On Mon, 2024-12-02 at 13:16 +0000, Mark Brown wrote:
> > On Sun, Dec 01, 2024 at 05:15:45PM +0000, Jiaxin Yu (俞家鑫) wrote:

> > > So I want to ask if I can do it by just adding
> > > SOC_DAPM_PIN_SWITCH("Speakers") and SOC_DAPM_PIN_SWITCH("HDMI")?
> > > Correspondingly, dapm widget and route path need to be added. That
> > > is
> > > "SND_SOC_DAPM_SPK("Speakers", NULL)/ SND_SOC_DAPM_LINE("HDMI1",
> > > NULL)"
> > > and "{"Speakers", NULL, "Speaker"}/ {"HDMI1", NULL, "TX"}".

> > Yes, that's what I'd expect to see.

> So if I open the "HDMI Switch" amixer control, it will call
> 'hdmi_codec_startup', which in turn calls "audio_startup()"  in
> 'hdmi_codec_ops'. Conversely, if I close it, it will call
> 'hdmi_codec_shutdown', which in turn calls 'audio_shutdown' in
> 'hdmi_codec_ops'. Is this understanding correct?

The audio stream will still run, the DAPM path attached to it will get
shut down.

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)