Date: Wed, 26 Jul 2017 16:40:41 +0200
From: Daniel Vetter <daniel@ffwll.ch>
To: Arnd Bergmann <arnd@arndb.de>
Cc: dri-devel@lists.freedesktop.org, David Airlie <airlied@linux.ie>,
        nouveau@lists.freedesktop.org, Jon Nettleton <jon.nettleton@gmail.com>,
        platform-driver-x86@vger.kernel.org,
        Daniel Vetter <daniel.vetter@intel.com>, devel@driverdev.osuosl.org,
        Daniel Drake <dsd@laptop.org>, Jens Frederich <jfrederich@gmail.com>,
        linux-acpi@vger.kernel.org, Ben Skeggs <bskeggs@redhat.com>,
        Russell King <linux+etnaviv@armlinux.org.uk>,
        Darren Hart <dvhart@infradead.org>, Len Brown <lenb@kernel.org>,
        intel-gfx@lists.freedesktop.org, etnaviv@lists.freedesktop.org,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>, linux-kernel@vger.kernel.org,
        Andy Shevchenko <andy@infradead.org>,
        Lucas Stach <l.stach@pengutronix.de>
Subject: Re: [Intel-gfx] [PATCH 0/3] Kconfig dependencies: acpi-video,
 backlight and thermal
Message-ID: <20170726144041.plcrr6bg2hkh4q52@phenom.ffwll.local>
Mail-Followup-To: Arnd Bergmann <arnd@arndb.de>,
        dri-devel@lists.freedesktop.org, David Airlie <airlied@linux.ie>,
        nouveau@lists.freedesktop.org,
        Jon Nettleton <jon.nettleton@gmail.com>,
        platform-driver-x86@vger.kernel.org,
        Daniel Vetter <daniel.vetter@intel.com>, devel@driverdev.osuosl.org,
        Daniel Drake <dsd@laptop.org>,
        Jens Frederich <jfrederich@gmail.com>, linux-acpi@vger.kernel.org,
        Ben Skeggs <bskeggs@redhat.com>,
        Russell King <linux+etnaviv@armlinux.org.uk>,
        Darren Hart <dvhart@infradead.org>, Len Brown <lenb@kernel.org>,
        intel-gfx@lists.freedesktop.org, etnaviv@lists.freedesktop.org,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>,
        linux-kernel@vger.kernel.org, Andy Shevchenko <andy@infradead.org>,
        Lucas Stach <l.stach@pengutronix.de>
References: <20170726135312.2214309-1-arnd@arndb.de>
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On Wed, Jul 26, 2017 at 03:53:09PM +0200, Arnd Bergmann wrote:
> Hi everyone,
> 
> It took me a while to figure this out properly, as I kept getting
> circular or missing dependencies with video drivers.
> 
> This set of three patches should simplify the situation a bit,
> mostly by cleaning up the dependencies around CONFIG_ACPI_VIDEO.
> With all three patches applied, I no longer run into those related
> warnings. If everyone agrees on the general direction, I hope
> we can merge all three through the DRM tree.
> 
> I originally had another larger patch in the series to replace all
> of the 'select BACKLIGHT_LCD_SUPPORT; select BACKLIGHT_CLASS_DEVICE'
> statements with 'depends on LCD_CLASS_DEVICE', that would clean
> it up some more, but it is also a more invasive change that we
> can do separately at some point.

Looks reasonable, but I think it'd be good to get Jani Nikula's explicit
ack on this, since he dugg around a lot in this area. And he's on vacation
this week.
-Daniel

> 
>        Arnd
> 
> Arnd Bergmann (3):
>   backlight: always select BACKLIGHT_LCD_SUPPORT for
>     BACKLIGHT_CLASS_DEVICE
>   ACPI/DRM: rework ACPI_VIDEO Kconfig dependencies
>   drm/etnaviv: add thermal dependency
> 
>  drivers/acpi/Kconfig              |  7 +++++--
>  drivers/gpu/drm/etnaviv/Kconfig   |  1 +
>  drivers/gpu/drm/gma500/Kconfig    |  5 +----
>  drivers/gpu/drm/i915/Kconfig      |  7 +------
>  drivers/gpu/drm/nouveau/Kconfig   | 10 ++--------
>  drivers/platform/x86/Kconfig      |  9 ++++-----
>  drivers/staging/olpc_dcon/Kconfig |  1 +
>  7 files changed, 15 insertions(+), 25 deletions(-)
> 
> To: dri-devel@lists.freedesktop.org
> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
> Cc: Len Brown <lenb@kernel.org>
> Cc: Lucas Stach <l.stach@pengutronix.de>
> Cc: Russell King <linux+etnaviv@armlinux.org.uk>
> Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
> Cc: David Airlie <airlied@linux.ie>
> Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
> Cc: Daniel Vetter <daniel.vetter@intel.com>
> Cc: Jani Nikula <jani.nikula@linux.intel.com>
> Cc: Ben Skeggs <bskeggs@redhat.com>
> Cc: Darren Hart <dvhart@infradead.org>
> Cc: Andy Shevchenko <andy@infradead.org>
> Cc: Jens Frederich <jfrederich@gmail.com>
> Cc: Daniel Drake <dsd@laptop.org>
> Cc: Jon Nettleton <jon.nettleton@gmail.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: linux-acpi@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Cc: etnaviv@lists.freedesktop.org
> Cc: intel-gfx@lists.freedesktop.org
> Cc: nouveau@lists.freedesktop.org
> Cc: platform-driver-x86@vger.kernel.org
> Cc: devel@driverdev.osuosl.org
> 
> -- 
> 2.9.0
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch