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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Johan Hovold <jhovold@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>,
	Samuel Ortiz <sameo@linux.intel.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Florian Tobias Schandinat <FlorianSchandinat@gmx.de>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org
Subject: Re: [PATCH 2/4] misc: add LM3533 ambient light sensor driver
Date: Fri, 20 Apr 2012 10:37:54 -0700	[thread overview]
Message-ID: <20120420173754.GA22222@kroah.com> (raw)
In-Reply-To: <20120420172849.GB12376@localhost>

On Fri, Apr 20, 2012 at 07:28:49PM +0200, Johan Hovold wrote:
> On Fri, Apr 20, 2012 at 08:57:34AM -0700, Greg Kroah-Hartman wrote:
> > On Fri, Apr 20, 2012 at 05:30:24PM +0200, Johan Hovold wrote:
> > > Add sub-driver for the ambient light sensor in National Semiconductor /
> > > TI LM3533 lighting power chips.
> > > 
> > > Raw ADC values as well as current ALS zone can be retrieved through
> > > sysfs. The ALS zone can also be read using a character device
> > > (/dev/lm3533-als) which is updated on zone changes (interrupt driven or
> > > polled).
> > > 
> > > The driver provides a configuration interface through sysfs.
> > 
> > Which seems to not be documented at all :(
> 
> There are the following sysfs entries for configuring ALS control:

<snip>

That's fine, but you need a Documentation/ABI entry for any new sysfs
file you create.
> > What about using the iio interface for this instead?  Doesn't that
> > already provide this standard interface you are looking for?
> 
> I had a look at iio last fall and decided not to use it at the time. I
> can't remember exactly what the reasons were right now, so I'll have
> to get back to you on this.

Please look into this, the iio framework is about to move out of the
staging tree for 3.5, so there should not be any reason for you to
create yet-another user api for this type of thing.

thanks,

greg k-h

  reply	other threads:[~2012-04-20 17:38 UTC|newest]

Thread overview: 83+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-20 15:30 [PATCH 0/4] mfd: add LM3533 lighting-power chip driver Johan Hovold
2012-04-20 15:30 ` [PATCH 1/4] mfd: add LM3533 lighting-power core driver Johan Hovold
2012-04-26 12:41   ` Mark Brown
2012-05-03 10:15     ` Johan Hovold
2012-05-03 10:22     ` Johan Hovold
2012-04-20 15:30 ` [PATCH 2/4] misc: add LM3533 ambient light sensor driver Johan Hovold
2012-04-20 15:57   ` Greg Kroah-Hartman
2012-04-20 17:28     ` Johan Hovold
2012-04-20 17:37       ` Greg Kroah-Hartman [this message]
2012-04-26 11:52         ` Johan Hovold
2012-04-20 15:30 ` [PATCH 3/4] leds: add LM3533 LED driver Johan Hovold
2012-04-20 16:10   ` Arnd Bergmann
2012-04-20 16:45     ` Johan Hovold
2012-04-20 15:30 ` [PATCH 4/4] backlight: add LM3533 backlight driver Johan Hovold
2012-05-03 10:26 ` [PATCH v2 0/4] mfd: add LM3533 lighting-power chip driver Johan Hovold
2012-05-03 10:26   ` [PATCH v2 1/4] mfd: add LM3533 lighting-power core driver Johan Hovold
2012-05-03 10:38     ` Mark Brown
2012-05-03 11:28       ` Johan Hovold
2012-05-03 11:38         ` Mark Brown
2012-05-03 15:00           ` Johan Hovold
2012-05-03 15:24             ` Mark Brown
2012-05-03 16:54               ` Johan Hovold
2012-05-03 16:57                 ` Mark Brown
2012-05-03 17:14                   ` Johan Hovold
2012-05-03 17:23                     ` Mark Brown
2012-05-03 17:31                       ` Johan Hovold
2012-05-09 14:42     ` Samuel Ortiz
2012-05-10 12:07       ` Johan Hovold
2012-05-10 12:11         ` [PATCH 1/2] mfd: lm3533: add boost frequency and ovp to platform data Johan Hovold
2012-05-10 12:11           ` [PATCH 2/2] mfd: lm3533: remove boost attributes Johan Hovold
2012-05-10 17:18         ` [PATCH 0/2] mfd: lm3533: update max-current interface Johan Hovold
2012-05-10 17:18           ` [PATCH 1/2] mfd: lm3533: remove unused max-current function Johan Hovold
2012-05-10 17:18           ` [PATCH 2/2] mfd: lm3533: use SI-units for max-current interface Johan Hovold
2012-05-11 13:32         ` [PATCH v2 1/4] mfd: add LM3533 lighting-power core driver Samuel Ortiz
2012-05-03 10:26   ` [PATCH v2 2/4] iio: add LM3533 ambient light sensor driver Johan Hovold
2012-05-03 11:40     ` Jonathan Cameron
2012-05-03 16:36       ` Johan Hovold
2012-05-08 13:47         ` Jonathan Cameron
2012-05-15 16:44           ` Johan Hovold
2012-05-15 20:00             ` Jonathan Cameron
2012-05-16 13:05               ` Johan Hovold
2012-05-16 14:21                 ` Jonathan Cameron
2012-05-18 12:27                   ` Johan Hovold
2012-05-18 17:34                     ` Jonathan Cameron
2012-05-18 17:57                       ` Johan Hovold
2012-05-19  8:04                         ` Jonathan Cameron
2012-05-15 16:46     ` [PATCH v3] iio: add LM3533 ambient-light-sensor driver Johan Hovold
2012-05-15 19:27       ` Andrew Morton
2012-05-15 20:00         ` Johan Hovold
2012-05-15 20:16           ` Jonathan Cameron
2012-05-18 13:07       ` [PATCH v4] " Johan Hovold
2012-05-19  8:48         ` Jonathan Cameron
2012-05-19 16:30           ` Johan Hovold
2012-05-19 13:26             ` Jonathan Cameron
2012-05-21  9:50           ` Johan Hovold
2012-05-21 16:37             ` Jonathan Cameron
2012-05-21 22:07               ` Johan Hovold
2012-05-22  7:13                 ` Jonathan Cameron
2012-05-22  9:09                   ` Johan Hovold
2012-05-22  9:15                     ` Jonathan Cameron
2012-05-22  7:45               ` Michael Hennerich
2012-05-22  7:49                 ` Jonathan Cameron
2012-05-22  8:11                   ` Michael Hennerich
2012-05-22  8:20                     ` Jonathan Cameron
2012-05-21 12:18         ` [PATCH v5] " Johan Hovold
2012-05-22  9:19           ` Jonathan Cameron
2012-05-22  9:40             ` Johan Hovold
2012-05-22 13:55               ` Greg Kroah-Hartman
2012-06-05  4:11               ` Greg Kroah-Hartman
2012-05-03 10:26   ` [PATCH v2 3/4] leds: add LM3533 LED driver Johan Hovold
2012-05-03 10:43     ` Mark Brown
2012-05-03 11:50       ` Johan Hovold
2012-05-03 14:51         ` Mark Brown
2012-05-03 16:46           ` Johan Hovold
2012-05-10 18:27     ` [PATCH v3] " Johan Hovold
2012-05-10 18:48       ` Andrew Morton
2012-05-11  9:54         ` Johan Hovold
2012-05-11 22:24           ` Andrew Morton
2012-05-14 10:25             ` Johan Hovold
2012-05-14 10:31       ` [PATCH v4] " Johan Hovold
2012-05-03 10:26   ` [PATCH v2 4/4] backlight: add LM3533 backlight driver Johan Hovold
2012-05-10 18:29     ` [PATCH v3] " Johan Hovold
2012-05-15 19:13       ` [PATCH v4] " Johan Hovold

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