From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-acpi@vger.kernel.org, "Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: brightness control on thinkpad t61p
Date: Tue, 8 Jan 2008 00:45:59 +0000 [thread overview]
Message-ID: <20080108004559.GA27177@srcf.ucam.org> (raw)
In-Reply-To: <20080108003246.GA15587@khazad-dum.debian.net>
On Mon, Jan 07, 2008 at 10:32:46PM -0200, Henrique de Moraes Holschuh wrote:
> Should we? Why? We lose information doing that. Instead of a nice linear
> 0-100% brightness scale, you are now back to an 8 or 16-level non-linear
> brightness scale.
The spec makes no guarantees about what that 0-100 range means - it may
be brightness, power consumption or bonghits. It's really not guaranteed
to be meaningful, and the backlight class doesn't provide that guarantee
either.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2008-01-08 0:46 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-23 8:00 brightness control on thinkpad t61p Andrew Morton
2007-12-23 12:16 ` Rafael J. Wysocki
2007-12-24 7:34 ` Matthew Garrett
2007-12-24 17:14 ` Henrique de Moraes Holschuh
2007-12-26 22:10 ` Andrew Morton
2007-12-26 22:23 ` Matthew Garrett
2007-12-27 12:33 ` Henrique de Moraes Holschuh
2008-01-07 1:36 ` Henrique de Moraes Holschuh
2008-01-07 19:48 ` Matthew Garrett
2008-01-08 0:32 ` Henrique de Moraes Holschuh
2008-01-08 0:45 ` Matthew Garrett [this message]
2008-01-08 12:06 ` Henrique de Moraes Holschuh
2008-01-08 12:18 ` Matthew Garrett
2008-01-08 12:48 ` Henrique de Moraes Holschuh
2008-01-08 15:17 ` Matthew Garrett
2008-01-08 15:45 ` Richard Purdie
2008-01-08 15:54 ` Matthew Garrett
2008-01-08 16:29 ` Richard Purdie
2008-01-08 16:49 ` Henrique de Moraes Holschuh
2008-01-08 16:56 ` Richard Purdie
2008-01-08 17:36 ` Henrique de Moraes Holschuh
2007-12-27 12:31 ` Henrique de Moraes Holschuh
2007-12-24 17:08 ` Henrique de Moraes Holschuh
2007-12-26 22:10 ` Andrew Morton
2007-12-27 13:15 ` Henrique de Moraes Holschuh
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20080108004559.GA27177@srcf.ucam.org \
--to=mjg59@srcf.ucam.org \
--cc=akpm@linux-foundation.org \
--cc=hmh@hmh.eng.br \
--cc=linux-acpi@vger.kernel.org \
--cc=rjw@sisk.pl \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.