linux-kernel - Re: [PATCH RESEND] pinctrl: intel: Turn Baytrail support to tristate

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Date:   Thu, 26 Jan 2017 11:29:11 +0200
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Jean Delvare <jdelvare@...e.de>
Cc:     linux-gpio@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mathias Nyman <mathias.nyman@...ux.intel.com>,
        Takashi Iwai <tiwai@...e.de>,
        Paul Gortmaker <paul.gortmaker@...driver.com>
Subject: Re: [PATCH RESEND] pinctrl: intel: Turn Baytrail support to tristate

On Thu, Jan 26, 2017 at 10:05:06AM +0100, Jean Delvare wrote:
> Hi Mika and all,
> 
> On Wed, 25 Jan 2017 18:16:51 +0200, Mika Westerberg wrote:
> > On Wed, Jan 25, 2017 at 04:26:08PM +0100, Jean Delvare wrote:
> > > The pinctrl-baytrail driver builds just fine as a module so give
> > > users this option.
> > > 
> > > Signed-off-by: Jean Delvare <jdelvare@...e.de>
> > > Cc: Mika Westerberg <mika.westerberg@...ux.intel.com>
> > 
> > Assuming you have checked that nothing breaks in Baytrail, I'm fine with
> > this change,
> 
> I have not, as I do not have access to any Baytrail hardware. This is
> the very reason why I'd like this code to be buildable as a module: I'm
> not happy with a useless 50 kB driver being loaded on all my systems. I
> was hopping someone at Intel would have access to the hardware to
> perform the test.

We do not have all the possible hardware here. I have one Minnowboard
MAX which I can test this on (like I commented in the other email) but
it does not have any ACPI GPIO OpRegion stuff that is present in many
Baytrail based laptops out there.