path: root/Documentation/misc-devices
diff options
authorDaniel Mack <daniel@caiaq.de>2009-03-31 15:23:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-01 08:59:18 -0700
commit3cdbbeebb77348176bd6a03fd86e11bc281c529e (patch)
tree079d84c58cdb0e6f4d43eee69d42d26d5a48af35 /Documentation/misc-devices
parent891f7d73ea30f925596b90bcf21020bfc5d90f3f (diff)
drivers/misc/isl29003.c: driver for the ISL29003 ambient light sensor
Add a driver for Intersil's ISL29003 ambient light sensor device plus some documentation. Inspired by tsl2550.c, a driver for a similar device. It is put in drivers/misc for now until the industrial I/O framework gets merged. Signed-off-by: Daniel Mack <daniel@caiaq.de> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/misc-devices')
1 files changed, 62 insertions, 0 deletions
diff --git a/Documentation/misc-devices/isl29003 b/Documentation/misc-devices/isl29003
new file mode 100644
index 000000000000..c4ff5f38e010
--- /dev/null
+++ b/Documentation/misc-devices/isl29003
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+Kernel driver isl29003
+Supported chips:
+* Intersil ISL29003
+Prefix: 'isl29003'
+Addresses scanned: none
+Author: Daniel Mack <daniel@caiaq.de>
+The ISL29003 is an integrated light sensor with a 16-bit integrating type
+ADC, I2C user programmable lux range select for optimized counts/lux, and
+I2C multi-function control and monitoring capabilities. The internal ADC
+provides 16-bit resolution while rejecting 50Hz and 60Hz flicker caused by
+artificial light sources.
+The driver allows to set the lux range, the bit resolution, the operational
+mode (see below) and the power state of device and can read the current lux
+value, of course.
+The ISL29003 does not have an ID register which could be used to identify
+it, so the detection routine will just try to read from the configured I2C
+addess and consider the device to be present as soon as it ACKs the
+Sysfs entries
+ 0: 0 lux to 1000 lux (default)
+ 1: 0 lux to 4000 lux
+ 2: 0 lux to 16,000 lux
+ 3: 0 lux to 64,000 lux
+ 0: 2^16 cycles (default)
+ 1: 2^12 cycles
+ 2: 2^8 cycles
+ 3: 2^4 cycles
+ 0: diode1's current (unsigned 16bit) (default)
+ 1: diode1's current (unsigned 16bit)
+ 2: difference between diodes (l1 - l2, signed 15bit)
+ 0: device is disabled (default)
+ 1: device is enabled
+lux (read only):
+ returns the value from the last sensor reading

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