linux-kernel - Should asus-wmi provide a way to switch displays, and why video

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 15 Feb 2011 07:53:09 +0100
From:	Corentin Chary <corentin.chary@...il.com>
To:	platform-driver-x86@...r.kernel.org
Cc:	linux acpi <linux-acpi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Matthew Garrett <mjg@...hat.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Luming Yu <luming.yu@...el.com>
Subject: Should asus-wmi provide a way to switch displays, and why
 video_output class is unused

Hi,
In the ongoing effort to split eeepc-wmi, and add support for Asus WMI
capable notebooks, I found that some of them are able to control
dispay output.
Currently, asus-laptop, asus_acpi and eeepc-laptop are also all able
to do that, and they use a simple sysfs file with a bitmask to do
that.

Now, I was searching the right, generic way to do that, and I found
video_output class. The issue is that nobody, even acpi/video.ko, use
it.

So, what's the right way to do that ?

Note, that in my case, I can't know what output are available, so
anyway, using video_output would be a little tricky. But still, I'm
not really comfortable adding another cryptic sysfs file, even with
proper documentation in Docuementation/ABI/.

Thanks,
-- 
Corentin Chary
http://xf.iksaif.net
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/