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From: Hans de Goede <hdegoede@redhat.com>
To: Matthew Garrett <mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
Cc: "xorg-devel-go0+a7rfsptAfugRpC6u6w@public.gmane.org"
	<xorg-devel-go0+a7rfsptAfugRpC6u6w@public.gmane.org>,
	Linux Fbdev development list
	<linux-fbdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Jingoo Han <jg1.han-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>,
	Dave Airlie <airlied-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	dri-devel
	<dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
Subject: Re: Fixing the kernels backlight API
Date: Fri, 14 Feb 2014 08:45:46 +0000	[thread overview]
Message-ID: <52FDD7BA.6040209@redhat.com> (raw)
In-Reply-To: <20140213201237.GA19355-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>

Hi,

On 02/13/2014 09:12 PM, Matthew Garrett wrote:
> On Thu, Feb 13, 2014 at 08:43:10PM +0100, Hans de Goede wrote:
> 
>> I can understand where Dave is coming from, from a kernel pov, so this
>> might really be easier to just solve in userspace. I don't know if you've
>> seen my very rough sketch of how this could work in userspace in my other
>> mail. The idea would be to still make this show up on a specific connector,
>> but only at the xrandr level, not at the drm level, and have the xserver
>> talk to some kind of backlightd for this.  The backlightd API should of cource
>> be generic enough that it can be used in wayland too.
> 
> Sure. You should probably take a look at libbacklight, which already has 
> some amount of support for appropriate heuristics.

Ah, I did not know about libbacklight, thanks for the pointer.

Note that although I believe we do need to sort out this mess, and having
something like backlightd would be a good idea, I likely won't have time to
work on this in the near future. For $dayjob I will be focussing on finishing
rootless xorg and working on libinput. And $hobbytime is all going to getting
upstream support for Allwinner ARM SoCs into place.

Still I'll put a line about this in my todo file, just don't expect anything
soon, and no promises about this at all!

Regards,

Hans

WARNING: multiple messages have this Message-ID (diff)
From: Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Matthew Garrett <mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
Cc: "xorg-devel-go0+a7rfsptAfugRpC6u6w@public.gmane.org"
	<xorg-devel-go0+a7rfsptAfugRpC6u6w@public.gmane.org>,
	Linux Fbdev development list
	<linux-fbdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Jingoo Han <jg1.han-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>,
	Dave Airlie <airlied-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	dri-devel
	<dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
Subject: Re: Fixing the kernels backlight API
Date: Fri, 14 Feb 2014 09:45:46 +0100	[thread overview]
Message-ID: <52FDD7BA.6040209@redhat.com> (raw)
In-Reply-To: <20140213201237.GA19355-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>

Hi,

On 02/13/2014 09:12 PM, Matthew Garrett wrote:
> On Thu, Feb 13, 2014 at 08:43:10PM +0100, Hans de Goede wrote:
> 
>> I can understand where Dave is coming from, from a kernel pov, so this
>> might really be easier to just solve in userspace. I don't know if you've
>> seen my very rough sketch of how this could work in userspace in my other
>> mail. The idea would be to still make this show up on a specific connector,
>> but only at the xrandr level, not at the drm level, and have the xserver
>> talk to some kind of backlightd for this.  The backlightd API should of cource
>> be generic enough that it can be used in wayland too.
> 
> Sure. You should probably take a look at libbacklight, which already has 
> some amount of support for appropriate heuristics.

Ah, I did not know about libbacklight, thanks for the pointer.

Note that although I believe we do need to sort out this mess, and having
something like backlightd would be a good idea, I likely won't have time to
work on this in the near future. For $dayjob I will be focussing on finishing
rootless xorg and working on libinput. And $hobbytime is all going to getting
upstream support for Allwinner ARM SoCs into place.

Still I'll put a line about this in my todo file, just don't expect anything
soon, and no promises about this at all!

Regards,

Hans
_______________________________________________
xorg-devel-go0+a7rfsptAfugRpC6u6w@public.gmane.org: X.Org development
Archives: http://lists.x.org/archives/xorg-devel
Info: http://lists.x.org/mailman/listinfo/xorg-devel

  parent reply	other threads:[~2014-02-14  8:45 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-12 15:12 Fixing the kernels backlight API Hans de Goede
2014-02-12 15:12 ` Hans de Goede
     [not found] ` <52FB8F45.9060006-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-02-12 20:14   ` Dave Airlie
2014-02-12 20:14     ` Dave Airlie
     [not found]     ` <CAPM=9tyYLuoTtW69-cPx-JSuar++D5WEtYRZr_-aP7uowZpVyA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-02-12 20:43       ` Ville Syrjälä
2014-02-12 20:43         ` Ville Syrjälä
2014-02-12 22:26         ` David Herrmann
2014-02-12 22:26           ` David Herrmann
     [not found]           ` <CANq1E4R=UVo5YVPUrdRFeobAE-qU6e-+GHZ2VJwwaa8zEO6g3Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-02-13  6:37             ` Alexander E. Patrakov
2014-02-13  6:37               ` Alexander E. Patrakov
     [not found]               ` <52FC683F.10905-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-02-13 13:57                 ` Hans de Goede
2014-02-13 13:57                   ` Hans de Goede
2014-02-13 13:49             ` Hans de Goede
2014-02-13 13:49               ` Hans de Goede
2014-02-13 13:41       ` Hans de Goede
2014-02-13 13:41         ` Hans de Goede
2014-02-13 17:19         ` Matthew Garrett
     [not found]           ` <20140213171932.GB4420-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2014-02-13 19:43             ` Hans de Goede
2014-02-13 19:43               ` Hans de Goede
     [not found]               ` <52FD204E.40507-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-02-13 20:12                 ` Matthew Garrett
2014-02-13 20:12                   ` Matthew Garrett
     [not found]                   ` <20140213201237.GA19355-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2014-02-14  8:45                     ` Hans de Goede [this message]
2014-02-14  8:45                       ` Hans de Goede

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