From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCHv9 1/3] Runtime Interpreted Power Sequences
Date: Tue, 27 Nov 2012 16:46:07 +0000 [thread overview]
Message-ID: <20121127164607.GG4468@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <3136860.Z3VvKjeKpU@avalon>
[-- Attachment #1: Type: text/plain, Size: 808 bytes --]
On Tue, Nov 27, 2012 at 04:37:32PM +0100, Laurent Pinchart wrote:
> One possibly crazy idea I had was to replace backlight devices as we know them
> with LED devices (a LED driver IC shouldn't be supported by different APIs
> depending on whether the LEDs it drives are used as a backlight or not), and
> have the panel hook up with the associated LED device to expose backlight
> operations through the CDF. Panels with a backlight controller tied to the
> panel controller (control through DSI for instance) would implement the
> backlight operations directly without instantiating a LED device. This still
> leaves the question of the userspace backlight brightness API open.
I remember looking at that before but never actually got round to it, it
seems like a sensible idea to me.
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 836 bytes --]
WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>,
Thierry Reding <thierry.reding@avionic-design.de>,
Tomi Valkeinen <tomba@iki.fi>, Alex Courbot <acourbot@nvidia.com>,
Grant Likely <grant.likely@secretlab.ca>,
Anton Vorontsov <cbouatmailru@gmail.com>,
Stephen Warren <swarren@nvidia.com>,
Mark Zhang <markz@nvidia.com>,
Rob Herring <rob.herring@calxeda.com>,
David Woodhouse <dwmw2@infradead.org>,
Arnd Bergmann <arnd@arndb.de>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-fbdev@vger.kernel.org" <linux-fbdev@vger.kernel.org>,
"devicetree-discuss@lists.ozlabs.org"
<devicetree-discuss@lists.ozlabs.org>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
Alexandre Courbot <gnurou@gmail.com>
Subject: Re: [PATCHv9 1/3] Runtime Interpreted Power Sequences
Date: Tue, 27 Nov 2012 16:46:07 +0000 [thread overview]
Message-ID: <20121127164607.GG4468@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <3136860.Z3VvKjeKpU@avalon>
[-- Attachment #1: Type: text/plain, Size: 808 bytes --]
On Tue, Nov 27, 2012 at 04:37:32PM +0100, Laurent Pinchart wrote:
> One possibly crazy idea I had was to replace backlight devices as we know them
> with LED devices (a LED driver IC shouldn't be supported by different APIs
> depending on whether the LEDs it drives are used as a backlight or not), and
> have the panel hook up with the associated LED device to expose backlight
> operations through the CDF. Panels with a backlight controller tied to the
> panel controller (control through DSI for instance) would implement the
> backlight operations directly without instantiating a LED device. This still
> leaves the question of the userspace backlight brightness API open.
I remember looking at that before but never actually got round to it, it
seems like a sensible idea to me.
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 836 bytes --]
WARNING: multiple messages have this Message-ID (diff)
From: broonie@opensource.wolfsonmicro.com (Mark Brown)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCHv9 1/3] Runtime Interpreted Power Sequences
Date: Tue, 27 Nov 2012 16:46:07 +0000 [thread overview]
Message-ID: <20121127164607.GG4468@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <3136860.Z3VvKjeKpU@avalon>
On Tue, Nov 27, 2012 at 04:37:32PM +0100, Laurent Pinchart wrote:
> One possibly crazy idea I had was to replace backlight devices as we know them
> with LED devices (a LED driver IC shouldn't be supported by different APIs
> depending on whether the LEDs it drives are used as a backlight or not), and
> have the panel hook up with the associated LED device to expose backlight
> operations through the CDF. Panels with a backlight controller tied to the
> panel controller (control through DSI for instance) would implement the
> backlight operations directly without instantiating a LED device. This still
> leaves the question of the userspace backlight brightness API open.
I remember looking at that before but never actually got round to it, it
seems like a sensible idea to me.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 836 bytes
Desc: Digital signature
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20121127/3247c778/attachment.sig>
next prev parent reply other threads:[~2012-11-27 16:46 UTC|newest]
Thread overview: 158+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-17 10:55 [PATCHv9 0/3] Runtime Interpreted Power Sequences Alexandre Courbot
2012-11-17 10:55 ` Alexandre Courbot
2012-11-17 10:55 ` Alexandre Courbot
2012-11-17 10:55 ` [PATCHv9 1/3] " Alexandre Courbot
2012-11-17 10:55 ` Alexandre Courbot
2012-11-17 10:55 ` Alexandre Courbot
2012-11-17 10:55 ` Alexandre Courbot
2012-11-17 11:38 ` Anton Vorontsov
2012-11-17 11:38 ` Anton Vorontsov
2012-11-17 11:38 ` Anton Vorontsov
2012-11-19 2:29 ` Alex Courbot
2012-11-19 2:29 ` Alex Courbot
2012-11-19 2:29 ` Alex Courbot
2012-11-19 2:29 ` Alex Courbot
2012-11-19 2:32 ` Anton Vorontsov
2012-11-19 2:32 ` Anton Vorontsov
2012-11-19 2:32 ` Anton Vorontsov
2012-11-20 14:48 ` Tomi Valkeinen
2012-11-20 14:48 ` Tomi Valkeinen
2012-11-20 14:48 ` Tomi Valkeinen
2012-11-20 14:48 ` Tomi Valkeinen
2012-11-21 1:56 ` Alex Courbot
2012-11-21 1:56 ` Alex Courbot
2012-11-21 1:56 ` Alex Courbot
2012-11-21 1:56 ` Alex Courbot
2012-11-21 8:13 ` Tomi Valkeinen
2012-11-21 8:13 ` Tomi Valkeinen
2012-11-21 8:13 ` Tomi Valkeinen
2012-11-21 8:13 ` Tomi Valkeinen
2012-11-21 8:32 ` Alex Courbot
2012-11-21 8:32 ` Alex Courbot
2012-11-21 8:32 ` Alex Courbot
2012-11-21 8:32 ` Alex Courbot
2012-11-21 8:48 ` Tomi Valkeinen
2012-11-21 8:48 ` Tomi Valkeinen
2012-11-21 8:48 ` Tomi Valkeinen
2012-11-21 8:48 ` Tomi Valkeinen
2012-11-21 10:00 ` Alex Courbot
2012-11-21 10:00 ` Alex Courbot
2012-11-21 10:00 ` Alex Courbot
2012-11-22 13:01 ` Grant Likely
2012-11-22 13:01 ` Grant Likely
2012-11-22 13:01 ` Grant Likely
2012-11-22 13:01 ` Grant Likely
2012-11-20 21:54 ` Grant Likely
2012-11-20 21:54 ` Grant Likely
2012-11-20 21:54 ` Grant Likely
2012-11-20 21:54 ` Grant Likely
2012-11-21 1:31 ` Mark Brown
2012-11-21 1:31 ` Mark Brown
2012-11-21 1:31 ` Mark Brown
2012-11-21 16:44 ` Grant Likely
2012-11-21 16:44 ` Grant Likely
2012-11-21 16:44 ` Grant Likely
2012-11-22 8:57 ` Linus Walleij
2012-11-22 8:57 ` Linus Walleij
2012-11-22 8:57 ` Linus Walleij
2012-11-22 8:57 ` Linus Walleij
2012-11-22 9:55 ` Alexandre Courbot
2012-11-22 9:55 ` Alexandre Courbot
2012-11-22 9:55 ` Alexandre Courbot
2012-11-22 9:55 ` Alexandre Courbot
2012-11-23 1:44 ` Mark Brown
2012-11-23 1:44 ` Mark Brown
2012-11-23 1:44 ` Mark Brown
2012-11-21 4:23 ` Alex Courbot
2012-11-21 4:23 ` Alex Courbot
2012-11-21 4:23 ` Alex Courbot
2012-11-21 11:06 ` Tomi Valkeinen
2012-11-21 11:06 ` Tomi Valkeinen
2012-11-21 11:06 ` Tomi Valkeinen
2012-11-21 11:06 ` Tomi Valkeinen
2012-11-21 11:40 ` Thierry Reding
2012-11-21 11:40 ` Thierry Reding
2012-11-21 11:40 ` Thierry Reding
2012-11-21 11:40 ` Thierry Reding
2012-11-21 12:04 ` Tomi Valkeinen
2012-11-21 12:04 ` Tomi Valkeinen
2012-11-21 12:04 ` Tomi Valkeinen
2012-11-21 13:00 ` Thierry Reding
2012-11-21 13:00 ` Thierry Reding
2012-11-21 13:00 ` Thierry Reding
2012-11-21 13:32 ` Tomi Valkeinen
2012-11-21 13:32 ` Tomi Valkeinen
2012-11-21 13:32 ` Tomi Valkeinen
2012-11-21 13:32 ` Tomi Valkeinen
2012-11-21 15:02 ` Alexandre Courbot
2012-11-21 15:02 ` Alexandre Courbot
2012-11-21 15:02 ` Alexandre Courbot
2012-11-21 15:02 ` Alexandre Courbot
2012-11-21 15:12 ` Thierry Reding
2012-11-21 15:12 ` Thierry Reding
2012-11-21 15:12 ` Thierry Reding
2012-11-22 2:01 ` Alexandre Courbot
2012-11-22 2:01 ` Alexandre Courbot
2012-11-22 2:01 ` Alexandre Courbot
2012-11-22 2:01 ` Alexandre Courbot
2012-11-22 2:06 ` Mark Brown
2012-11-22 2:06 ` Mark Brown
2012-11-22 2:06 ` Mark Brown
2012-11-22 2:06 ` Mark Brown
2012-11-22 3:09 ` Alexandre Courbot
2012-11-22 3:09 ` Alexandre Courbot
2012-11-22 3:09 ` Alexandre Courbot
2012-11-22 3:09 ` Alexandre Courbot
2012-11-22 13:39 ` Grant Likely
2012-11-22 13:39 ` Grant Likely
2012-11-22 13:39 ` Grant Likely
2012-11-22 13:39 ` Grant Likely
2012-11-27 15:19 ` Laurent Pinchart
2012-11-27 15:19 ` Laurent Pinchart
2012-11-27 15:19 ` Laurent Pinchart
2012-11-27 15:08 ` Laurent Pinchart
2012-11-27 15:08 ` Laurent Pinchart
2012-11-27 15:08 ` Laurent Pinchart
2012-11-27 15:08 ` Laurent Pinchart
2012-11-27 15:08 ` Laurent Pinchart
2012-11-27 15:19 ` Tomi Valkeinen
2012-11-27 15:19 ` Tomi Valkeinen
2012-11-27 15:19 ` Tomi Valkeinen
2012-11-27 15:19 ` Tomi Valkeinen
2012-11-27 15:37 ` Laurent Pinchart
2012-11-27 15:37 ` Laurent Pinchart
2012-11-27 15:37 ` Laurent Pinchart
2012-11-27 16:46 ` Mark Brown [this message]
2012-11-27 16:46 ` Mark Brown
2012-11-27 16:46 ` Mark Brown
2012-11-27 14:47 ` Laurent Pinchart
2012-11-27 14:47 ` Laurent Pinchart
2012-11-27 14:47 ` Laurent Pinchart
2012-11-27 14:47 ` Laurent Pinchart
2012-11-22 13:39 ` Grant Likely
2012-11-22 13:39 ` Grant Likely
2012-11-22 13:39 ` Grant Likely
2012-11-22 13:39 ` Grant Likely
2012-11-22 21:40 ` Thierry Reding
2012-11-22 21:40 ` Thierry Reding
2012-11-22 21:40 ` Thierry Reding
2012-11-22 21:40 ` Thierry Reding
2012-11-26 11:49 ` Alex Courbot
2012-11-26 11:49 ` Alex Courbot
2012-11-26 11:49 ` Alex Courbot
2012-11-26 11:49 ` Alex Courbot
2012-11-26 15:34 ` Grant Likely
2012-11-26 15:34 ` Grant Likely
2012-11-26 15:34 ` Grant Likely
2012-11-26 15:34 ` Grant Likely
2012-11-17 10:55 ` [PATCHv9 2/3] pwm_backlight: use power sequences Alexandre Courbot
2012-11-17 10:55 ` Alexandre Courbot
2012-11-17 10:55 ` Alexandre Courbot
2012-11-17 10:55 ` Alexandre Courbot
2012-11-17 10:55 ` [PATCHv9 3/3] Take maintainership of " Alexandre Courbot
2012-11-17 10:55 ` Alexandre Courbot
2012-11-17 10:55 ` Alexandre Courbot
2012-11-20 21:58 ` [PATCHv9 0/3] Runtime Interpreted Power Sequences Grant Likely
2012-11-20 21:58 ` Grant Likely
2012-11-20 21:58 ` Grant Likely
2012-11-20 21:58 ` Grant Likely
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=20121127164607.GG4468@opensource.wolfsonmicro.com \
--to=broonie@opensource.wolfsonmicro.com \
--cc=linux-arm-kernel@lists.infradead.org \
/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.