From: s.hauer@pengutronix.de (Sascha Hauer)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC] add pwmlib support
Date: Mon, 31 Jan 2011 08:58:03 +0100 [thread overview]
Message-ID: <20110131075803.GI9041@pengutronix.de> (raw)
In-Reply-To: <AANLkTi=ppKZ96T3_1nYisHG9705OCHgZqkLnu2f47zq5@mail.gmail.com>
On Sun, Jan 30, 2011 at 11:49:32AM +0800, arden jay wrote:
> Sorry, I'm confused about this.
> If it is for backlight control, why it don't go through led_class?
PWMs are not limited to backlight. As Jean pointed out they can be used
for fans (or more generally motors) aswell. Have a look at
drivers/leds/leds-pwm.c, it is a user of this pwm API.
Sascha
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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WARNING: multiple messages have this Message-ID (diff)
From: Sascha Hauer <s.hauer@pengutronix.de>
To: arden jay <arden.jay@gmail.com>
Cc: Wolfram Sang <w.sang@pengutronix.de>,
Jean Delvare <khali@linux-fr.org>,
linux-kernel@vger.kernel.org, Eric Miao <eric.miao@linaro.org>,
Ben Dooks <ben-linux@fluff.org>,
Kukjin Kim <kgene.kim@samsung.com>,
Lars-Peter Clausen <lars@metafoo.de>, Hemanth V <hemanthv@ti.com>,
linux-arm-kernel@lists.infradead.org,
Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>,
Shawn Guo <shawn.guo@freescale.com>
Subject: Re: [RFC] add pwmlib support
Date: Mon, 31 Jan 2011 08:58:03 +0100 [thread overview]
Message-ID: <20110131075803.GI9041@pengutronix.de> (raw)
In-Reply-To: <AANLkTi=ppKZ96T3_1nYisHG9705OCHgZqkLnu2f47zq5@mail.gmail.com>
On Sun, Jan 30, 2011 at 11:49:32AM +0800, arden jay wrote:
> Sorry, I'm confused about this.
> If it is for backlight control, why it don't go through led_class?
PWMs are not limited to backlight. As Jean pointed out they can be used
for fans (or more generally motors) aswell. Have a look at
drivers/leds/leds-pwm.c, it is a user of this pwm API.
Sascha
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
next prev parent reply other threads:[~2011-01-31 7:58 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-28 12:21 [RFC] add pwmlib support Sascha Hauer
2011-01-28 12:21 ` Sascha Hauer
2011-01-28 12:21 ` [PATCH 1/2] pwmlib: add pwm support Sascha Hauer
2011-01-28 12:21 ` Sascha Hauer
2011-01-30 20:52 ` Ryan Mallon
2011-01-30 20:52 ` Ryan Mallon
2011-01-31 7:49 ` Sascha Hauer
2011-01-31 7:49 ` Sascha Hauer
2011-01-28 12:21 ` [PATCH 2/2] pwm: Add a i.MX23/28 pwm driver Sascha Hauer
2011-01-28 12:21 ` Sascha Hauer
2011-01-28 14:12 ` [RFC] add pwmlib support root
2011-01-28 14:12 ` root
2011-01-29 0:21 ` Matt Sealey
2011-01-29 0:21 ` Matt Sealey
2011-01-29 20:38 ` Jean Delvare
2011-01-29 20:38 ` Jean Delvare
2011-01-29 21:51 ` Wolfram Sang
2011-01-29 21:51 ` Wolfram Sang
2011-01-30 3:49 ` arden jay
2011-01-30 3:49 ` arden jay
2011-01-31 7:58 ` Sascha Hauer [this message]
2011-01-31 7:58 ` Sascha Hauer
2011-02-06 13:22 ` Linus Walleij
2011-02-06 13:22 ` Linus Walleij
2011-01-29 20:53 ` Lars-Peter Clausen
2011-01-29 20:53 ` Lars-Peter Clausen
2011-01-31 3:35 ` Arun MURTHY
2011-01-31 3:35 ` Arun MURTHY
2011-01-31 7:54 ` Sascha Hauer
2011-01-31 7:54 ` Sascha Hauer
2011-01-31 12:48 ` Lars-Peter Clausen
2011-01-31 12:48 ` Lars-Peter Clausen
2011-01-31 13:00 ` Sascha Hauer
2011-01-31 13:00 ` Sascha Hauer
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