linux-kernel - Re: [PATCH v3] dell-laptop: Fix keyboard led max_brightness property for Dell Latitude E6410

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Date:   Sat, 11 Nov 2017 23:12:07 +0100
From:   Pali Rohár <pali.rohar@...il.com>
To:     Darren Hart <dvhart@...radead.org>
Cc:     Matthew Garrett <mjg59@...f.ucam.org>,
        Andy Shevchenko <andy@...radead.org>,
        "Gabriel M. Elder" <gabriel@...gnowsys.com>,
        Gabriele Mazzotta <gabriele.mzt@...il.com>,
        Mario.Limonciello@...l.com, platform-driver-x86@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] dell-laptop: Fix keyboard led max_brightness property
 for Dell Latitude E6410

On Thursday 02 November 2017 18:18:43 Darren Hart wrote:
> On Thu, Nov 02, 2017 at 09:25:24PM +0100, Pali Rohár wrote:
> > This machine reports number of keyboard backlight led levels, instead of
> > value of the last led level index. Therefore max_brightness properly needs
> > to be subtracted by 1 to match led max_brightness API.
> > 
> > Signed-off-by: Pali Rohár <pali.rohar@...il.com>
> > Reported-by: Gabriel M. Elder <gabriel@...gnowsys.com>
> > Link: https://bugzilla.kernel.org/show_bug.cgi?id=196913
> > ---
> > Changes since v2:
> > * Rename quirk entry to kbd_led_levels_off_1
> > Changes since v1:
> > * Update kbd_info.levels at initialization time based on quirk
> > ---
> >  drivers/platform/x86/dell-laptop.c |   17 +++++++++++++++++
> >  1 file changed, 17 insertions(+)
> > 
> > diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
> > index f42159f..7424e53 100644
> > --- a/drivers/platform/x86/dell-laptop.c
> > +++ b/drivers/platform/x86/dell-laptop.c
> > @@ -49,6 +49,7 @@
> >  
> >  struct quirk_entry {
> >  	u8 touchpad_led;
> > +	u8 kbd_led_levels_off_1;
> 
> I believe you and Andy agreed to use a boolean type here?

I'm going to fix this and other entries to boolean type in another
patch.

-- 
Pali Rohár
pali.rohar@...il.com