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Fri, 17 Apr 2026 11:15:02 +0000 Received: from PA4PR04MB9366.eurprd04.prod.outlook.com ([fe80::75e4:8143:ddbc:6588]) by PA4PR04MB9366.eurprd04.prod.outlook.com ([fe80::75e4:8143:ddbc:6588%6]) with mapi id 15.20.9818.023; Fri, 17 Apr 2026 11:15:01 +0000 Date: Fri, 17 Apr 2026 07:14:54 -0400 From: Frank Li To: Chancel Liu Cc: lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.com, shengjiu.wang@gmail.com, Xiubo.Lee@gmail.com, festevam@gmail.com, nicoleotsuka@gmail.com, s.hauer@pengutronix.de, kernel@pengutronix.de, shumingf@realtek.com, rander.wang@linux.intel.com, pierre-louis.bossart@linux.dev, linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v2 2/3] ASoC: soc-core: Add core support for ignoring suspend on selected DAPM widgets Message-ID: References: <20260415081942.4183108-1-chancel.liu@nxp.com> <20260415081942.4183108-3-chancel.liu@nxp.com> Content-Type: text/plain; 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Introduce a generic and reusable mechanism in > the ASoC core to mark selected DAPM widgets as ignore_suspend. > > The unified mechanism consists of two parts: > 1. Parse and store the name list of widgets to ignore suspend in > struct snd_soc_card > > The list of widgets can be provided either by the machine driver or > parsed from Device Tree. Different machines have different routing and > power requirements. Each machine can specify its own widgets to ignore > suspend through DT property. It enables flexible policy without hard > code. A new helper, snd_soc_of_parse_ignore_suspend_widgets() is added > for this purpose. > > 2. Apply ignore_suspend flags during snd_soc_bind_card() > > After all components have been probed and all DAPM widgets have been > registered, snd_soc_bind_card() performs a unified lookup of the > configured widget names across all DAPM contexts of the card and marks > the matching widgets with ignore_suspend = 1. > > Signed-off-by: Chancel Liu > --- ... > @@ -3294,6 +3298,45 @@ int snd_soc_of_parse_aux_devs(struct snd_soc_card *card, const char *propname) > } > EXPORT_SYMBOL_GPL(snd_soc_of_parse_aux_devs); > > +int snd_soc_of_parse_ignore_suspend_widgets(struct snd_soc_card *card, > + const char *propname) propname is fixed value "ignore-suspend-widgets"，needn't this agument. you funciton include "ignore_suspend_widgets", suppose only parse property. ignore_suspend_widgets Frank