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From: "Rafael J. Wysocki" <rjw-LthD3rsA81gm4RdzfppkhA@public.gmane.org>
To: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
Cc: Florian Fainelli
	<f.fainelli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Charles Keepax
	<ckeepax-yzvPICuk2AA4QjBA90+/kJqQE7yCjDx5@public.gmane.org>,
	linux-gpio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Linus Walleij
	<linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
	Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	open list <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org,
	swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org,
	andy.shevchenko-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	alcooperx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	bcm-kernel-feedback-list-dY08KVG/lbpWk0Htik3J/w@public.gmane.org,
	linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH v2 0/2] pinctrl: Allow indicating loss of state across suspend/resume
Date: Sat, 04 Nov 2017 13:25:43 +0100	[thread overview]
Message-ID: <2452741.VnAOAIxsj2@aspire.rjw.lan> (raw)
In-Reply-To: <20171103173353.GJ28152-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>

On Friday, November 3, 2017 6:33:53 PM CET Tony Lindgren wrote:
> * Florian Fainelli <f.fainelli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> [171103 17:04]:
> > On 11/03/2017 09:11 AM, Tony Lindgren wrote:
> > The pinctrl provider is losing its state, hence these two patches.
> 
> OK
> 
> > > Anyways, the context lost flag should be managed in the PM core for
> > > the device, so adding linux-pm and Rafael to Cc.
> > 
> > I don't think it's that simple but sure, why not.
> 
> Just having bool context_lost in struct dev_pm_info would probably
> be enough to allow drivers to deal with it. This flag could then
> be set for a device by power domain related code that knows if
> context got lost.

Something like: if the driver sees "context_lost" set, it should restore
the context to the device from memory?

But the it would also need to save the context beforehand, so why not to
restore it unconditionally on resume?

Thanks,
Rafael

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  parent reply	other threads:[~2017-11-04 12:25 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-02 23:15 [PATCH v2 0/2] pinctrl: Allow indicating loss of state across suspend/resume Florian Fainelli
2017-11-02 23:15 ` [PATCH v2 1/2] pinctrl: Allow a device to indicate when to force a state Florian Fainelli
     [not found]   ` <20171102231551.16220-2-f.fainelli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-11-29 13:06     ` Linus Walleij
2017-11-29 17:01   ` Tony Lindgren
2017-11-29 17:35     ` Florian Fainelli
2017-11-29 17:45       ` Tony Lindgren
2017-11-29 18:15         ` Florian Fainelli
2017-11-29 18:27           ` Tony Lindgren
2017-11-02 23:15 ` [PATCH v2 2/2] pinctrl: Allow indicating loss of pin states during low-power Florian Fainelli
2017-11-29 13:01   ` Linus Walleij
     [not found]     ` <CACRpkdZtFRB_iy1bDPZ0wkK0jf7pkTGtbZG4gQUJVR+eiO+dhA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-11-29 17:02       ` Tony Lindgren
     [not found]         ` <20171129170247.GI28152-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2017-11-29 17:37           ` Florian Fainelli
     [not found]             ` <96cf5d74-3acf-07b9-9ad8-1011cd99a860-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-12-02 12:48               ` Linus Walleij
2017-12-10 23:38                 ` Florian Fainelli
     [not found]                   ` <908c66f9-f9bd-a4df-e241-75595a3a3e27-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-12-20  7:24                     ` Linus Walleij
2017-12-30 19:31                       ` Florian Fainelli
     [not found] ` <20171102231551.16220-1-f.fainelli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-11-03 10:37   ` [PATCH v2 0/2] pinctrl: Allow indicating loss of state across suspend/resume Charles Keepax
2017-11-03 16:11     ` Tony Lindgren
2017-11-03 17:02       ` Florian Fainelli
2017-11-03 17:33         ` Tony Lindgren
2017-11-04  8:37           ` Charles Keepax
     [not found]             ` <20171104083707.gtmnhbrzlqjulwe4-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2017-11-07 16:00               ` Tony Lindgren
     [not found]           ` <20171103173353.GJ28152-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2017-11-04 12:25             ` Rafael J. Wysocki [this message]
2017-11-04 17:19               ` Florian Fainelli
2017-11-07 16:00                 ` Tony Lindgren
2017-11-08  0:23                   ` Rafael J. Wysocki
2017-11-08  0:28                     ` Florian Fainelli
2017-11-08  0:45                       ` Rafael J. Wysocki
2017-11-08  1:04                         ` Tony Lindgren
2017-11-08  1:02                     ` Tony Lindgren
     [not found]     ` <20171103103707.3e5wb3c7foxbuvvg-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2017-11-03 17:03       ` Florian Fainelli

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