linux-kernel - Re: [PATCH 2/2] acer-wmi: add Acer Aspire 5750G to video vendor list but keep acpi video driver

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Date:	Mon, 29 Apr 2013 17:21:10 +0800
From:	joeyli <jlee@...e.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	mjg@...hat.com, rjw@...k.pl, platform-driver-x86@...r.kernel.org,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Carlos Corbacho <carlos@...angeworlds.co.uk>,
	Corentin Chary <corentincj@...aif.net>,
	Aaron Lu <aaron.lu@...el.com>, Thomas Renninger <trenn@...e.de>
Subject: Re: [PATCH 2/2] acer-wmi: add Acer Aspire 5750G to video vendor
 list but keep acpi video driver

Hi Dmitry, 

Thanks for your review and suggestion!

於 一，2013-04-22 於 21:04 -0700，Dmitry Torokhov 提到：
> On Mon, Apr 22, 2013 at 08:39:14PM +0800, Chun-Yi Lee wrote:
> > From: Lee, Chun-Yi <jlee@...e.com>
> > 
> > After Andrzej's testing, we found the acpi backlight methods broken on Acer
> > Aspire 5750G but the i915 backlight control works when we set to vendor mode.
> > And, we still want to keep the acpi/video driver for transfer acpi event to key
> > event but not unregister whole acpi/video driver.
> > 
> > This patch introduced a new capability flag is ACER_CAP_KEEP_VIDEO_KEY, it
> > indicates the machine works fine with acpi/video driver for key event but want
> > to unregister the backlight interface of acpi/video.
> > 
> > Reference: bko#35622
> >         https://bugzilla.kernel.org/show_bug.cgi?id=35622
> > 
> > Tested-by: Andrzej Krentosz <endrjux@...il.com>
> > Cc: Carlos Corbacho <carlos@...angeworlds.co.uk>
> > Cc: Matthew Garrett <mjg@...hat.com>
> > Cc: Dmitry Torokhov <dtor@...l.ru>
> > Cc: Corentin Chary <corentincj@...aif.net>
> > Cc: Rafael J. Wysocki <rjw@...k.pl>
> > Cc: Aaron Lu <aaron.lu@...el.com>
> > Cc: Thomas Renninger <trenn@...e.de>
> > Signed-off-by: Lee, Chun-Yi <jlee@...e.com>
> > ---
> >  drivers/platform/x86/acer-wmi.c |   20 ++++++++++++++++++++
> >  1 files changed, 20 insertions(+), 0 deletions(-)
> > 
> > diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
> > index c9076bd..2a02409 100644
> > --- a/drivers/platform/x86/acer-wmi.c
> > +++ b/drivers/platform/x86/acer-wmi.c
> > @@ -207,6 +207,7 @@ struct hotkey_function_type_aa {
> >  #define ACER_CAP_BRIGHTNESS		(1<<3)
> >  #define ACER_CAP_THREEG			(1<<4)
> >  #define ACER_CAP_ACCEL			(1<<5)
> > +#define ACER_CAP_KEEP_VIDEO_KEY		(1<<6)
> >  #define ACER_CAP_ANY			(0xFFFFFFFF)
> >  
> >  /*
> > @@ -539,6 +540,15 @@ static int video_set_backlight_video_vendor(const struct dmi_system_id *d)
> >  	return 0;
> >  }
> >  
> > +static int video_set_backlight_video_vendor_keep_acpi_video(
> > +		const struct dmi_system_id *d)
> > +{
> > +	video_set_backlight_video_vendor(d);
> > +	interface->capability |= ACER_CAP_KEEP_VIDEO_KEY;
> > +	pr_info("Keep acpi video driver for emit keycode against backlight change\n");
> 
> Huh?
> 
> "Keeping acpi video driver active to emit backlight brightness change
> key events"?
> 
> Thanks.
> 

Yes, this statement is more fluent, I will put to v2 patch.


Thanks a lot!
Joey Lee



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