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: NPeter Meerwald <pmeerw@pmeerw.net> Cc: Jon Brenner <jon.brenner@ams.com> Signed-off-by: NJonathan Cameron <jic23@kernel.org>
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drivers/iio/light/tcs3472.c
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