linux-kernel - Re: [PATCH 4/6] pinctrl: single: Add support for wake-up interrupts

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Date:	Thu, 10 Oct 2013 18:11:29 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Tony Lindgren <tony@...mide.com>
Cc:	Roger Quadros <rogerq@...com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Grygorii Strashko <grygorii.strashko@...com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Peter Ujfalusi <peter.ujfalusi@...com>,
	Prakash Manjunathappa <prakash.pm@...com>,
	Haojian Zhuang <haojian.zhuang@...aro.org>,
	Benoît Cousson <bcousson@...libre.com>,
	Linux-OMAP <linux-omap@...r.kernel.org>
Subject: Re: [PATCH 4/6] pinctrl: single: Add support for wake-up interrupts

On Thu, Oct 10, 2013 at 6:00 PM, Tony Lindgren <tony@...mide.com> wrote:
> * Roger Quadros <rogerq@...com> [131010 06:32]:
>>
>> I tried testing this with the USB EHCI driver, but I'm not getting wake up interrupts
>> while the system is still running and only the EHCI controller is runtime suspended.
>>
>> It seems we need to somehow call _reconfigure_io_chain() to update the daisy chain
>> whenever the pad wakeup_enable bit is changed.
>
> Sounds like this is on omap3? Have you tried calling pcs_soc->rearm() in the
> pcs_irq_handle() like the comments there suggest? At least for me that keeps
> the wake-up interrupts continuously running on omap3 instead of just idle modes.

If the rearm() function is calling this _reconfigure_io_chain my comments
on the fact that this is something that should be handled by the pin
control driver still apply I think ....

Yours,
Linus Walleij
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