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Date: Thu, 13 Aug 2015 13:12:31 +0200 From: Linus Walleij <linus.walleij@...aro.org> To: Gregory Fong <gregory.0xf0@...il.com> Cc: Alexandre Courbot <gnurou@...il.com>, bcm-kernel-feedback-list <bcm-kernel-feedback-list@...adcom.com>, Brian Norris <computersforpeace@...il.com>, "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>, Florian Fainelli <f.fainelli@...il.com>, Ian Campbell <ijc+devicetree@...lion.org.uk>, Kumar Gala <galak@...eaurora.org>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Mark Rutland <mark.rutland@....com>, Pawel Moll <pawel.moll@....com>, Rob Herring <robh+dt@...nel.org>, Russell King <linux@....linux.org.uk> Subject: Re: [PATCH v4 3/4] gpio: brcmstb: support wakeup from S5 cold boot On Sat, Aug 1, 2015 at 3:17 AM, Gregory Fong <gregory.0xf0@...il.com> wrote: > For wake from S5, we need to: > - register a reboot handler > - set wakeup capability before requesting IRQ so wakeup count is > incremented > - mask all GPIO IRQs and clear any pending interrupts during driver > probe to since no driver will yet be registered to handle any IRQs > carried over from boot at that time, and it's possible that the > booted kernel does not request the same IRQ anyway. > > This means that /sys/.../power/wakeup_count is valid at boot time, and > we can properly account for S5 wakeup stats. e.g.: > > ### After waking from S5 from a GPIO key > # cat /sys/bus/platform/drivers/brcmstb-gpio/f04172c0.gpio/power/wakeup > enabled > # cat /sys/bus/platform/drivers/brcmstb-gpio/f04172c0.gpio/power/wakeup_count > 1 > > Signed-off-by: Gregory Fong <gregory.0xf0@...il.com> > --- > v4: rename __brcmstb_gpio_irq_set_wake() to brcmstb_gpio_priv_set_wake(). Patch applied. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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