linux-kernel - Re: Cherryview wake up events

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Date:   Thu, 2 Feb 2017 12:12:22 +0100
From:   Johannes Stezenbach <js@...21.net>
To:     Mika Westerberg <mika.westerberg@...ux.intel.com>
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        David Cohen <david.a.cohen@...ux.intel.com>
Subject: Re: Cherryview wake up events

On Thu, Feb 02, 2017 at 12:31:22PM +0200, Mika Westerberg wrote:
> On Thu, Feb 02, 2017 at 10:52:00AM +0100, Johannes Stezenbach wrote:
> >                 OperationRegion (GPOP, GeneralPurposeIo, Zero, 0x0100)
> >                 Field (GPOP, ByteAcc, NoLock, Preserve)
> >                 {
> >                     Connection (
> >                         GpioIo (Exclusive, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly,
> >                             "\\_SB.PCI0.I2C7.PMI2", 0x00, ResourceConsumer, ,
> >                             )
> >                             {   // Pin list
> >                                 0x0020
> >                             }
> >                     ), 
> >                     GMP0,   1, 
> >                     ...
> >                     (repeat for many more pins)
> > 
> > I guess it means it uses chv_gpio pins and can't work
> > if the GPIO opregion is not registered?
> 
> That is using GPIO pins of the PMI2 device - the PMIC GPIO driver, I
> suppose.
> 
> So in addition to the PMIC MFD driver, you need to have a GPIO driver
> for Dollar Cove (I guess the quilt patch series included that as well?).

Nope, I see it for AX288 but didn't find it for TI DCove.  And in
current Linus' tree axp288_cells[] doesn't include gpio so
I concluded it's not needed... what am I missing?


Thanks,
Johannes