From: Peter Meerwald <pmeerw@pmeerw.net>
Date: Sat, 14 Sep 2013 19:38:00 +0000 (+0100)
Subject: iio: Add tcs3472 color light sensor driver
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~62^2~694^2~63
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eb869ade30a645dd2fadd89453615585f235794e;p=pandora-kernel.git

iio: Add tcs3472 color light sensor driver

chip has four 16-bit channels for red, green, blue, clear color
intensity; driver supports the TCS3x7x family of devices and was
tested with a TCS34725 chip; further information here:
http://www.ams.com/eng/Products/Light-Sensors/Color-Sensor/TCS34725

v2 (thanks to Jonathan Cameron):
* drop dynamic buffer allocation, buffer is in tcs3472_data
* limit sysfs output to PAGE_SIZE
* check val2 == 0 when writing CALIBSCALE

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Jon Brenner <jon.brenner@ams.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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