linux-kernel - Re: [PATCH v2 3/4] ARM: mvebu: Allow using the GIC for wakeup in standby mode

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Message-ID: <CAMuHMdW1BaJ8rsd9LQMSJusgG=4jrWm1C=UwioK_fM2bj3nX5w@mail.gmail.com>
Date:	Wed, 1 Jul 2015 18:56:29 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Sudeep Holla <sudeep.holla@....com>
Cc:	Gregory CLEMENT <gregory.clement@...e-electrons.com>,
	Jason Cooper <jason@...edaemon.net>,
	Andrew Lunn <andrew@...n.ch>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Boris BREZILLON <boris.brezillon@...e-electrons.com>,
	Tawfik Bayouk <tawfik@...vell.com>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Nadav Haklai <nadavh@...vell.com>,
	Lior Amsalem <alior@...vell.com>,
	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 3/4] ARM: mvebu: Allow using the GIC for wakeup in
 standby mode

On Wed, Jul 1, 2015 at 6:05 PM, Sudeep Holla <sudeep.holla@....com> wrote:
> On 30/06/15 18:18, Gregory CLEMENT wrote:
>> On the Armada 375/38x/39x SoCs, in standby mode the SoCs stay powered
>> and it is possible to wake-up from any interrupt sources. This patch
>> adds flag to the GIC irqchip driver to let linux know this.
>>
>> Signed-off-by: Gregory CLEMENT <gregory.clement@...e-electrons.com>
>> ---
>>   arch/arm/mach-mvebu/board-v7.c | 7 +++++++
>>   1 file changed, 7 insertions(+)
>>
>> diff --git a/arch/arm/mach-mvebu/board-v7.c
>> b/arch/arm/mach-mvebu/board-v7.c
>> index e5911defccac..f446230e7416 100644
>> --- a/arch/arm/mach-mvebu/board-v7.c
>> +++ b/arch/arm/mach-mvebu/board-v7.c

>> @@ -129,6 +131,11 @@ static int armada_375_external_abort_wa(unsigned long
>> addr, unsigned int fsr,
>>
>>   static void __init mvebu_init_irq(void)
>>   {
>> +       if (of_machine_is_compatible("marvell,armada375") ||
>> +           of_machine_is_compatible("marvell,armada380") ||
>> +           of_machine_is_compatible("marvell,armada390"))
>> +               gic_set_irqchip_flags(IRQCHIP_SKIP_SET_WAKE |
>> +                                     IRQCHIP_MASK_ON_SUSPEND);
>
>
> I am planning to add these flags in the GIC driver itself and remove
> this function. I will post the patch next week once merge window closes
> next, so based on how that discussion proceeds you may have drop this
> patch, just heads up.

Tried that before...

http://lists.infradead.org/pipermail/linux-arm-kernel/2015-March/331813.html

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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