Root/Documentation/misc-devices/isl29003

1Kernel driver isl29003
2=====================
3
4Supported chips:
5* Intersil ISL29003
6Prefix: 'isl29003'
7Addresses scanned: none
8Datasheet:
9http://www.intersil.com/data/fn/fn7464.pdf
10
11Author: Daniel Mack <daniel@caiaq.de>
12
13
14Description
15-----------
16The ISL29003 is an integrated light sensor with a 16-bit integrating type
17ADC, I2C user programmable lux range select for optimized counts/lux, and
18I2C multi-function control and monitoring capabilities. The internal ADC
19provides 16-bit resolution while rejecting 50Hz and 60Hz flicker caused by
20artificial light sources.
21
22The driver allows to set the lux range, the bit resolution, the operational
23mode (see below) and the power state of device and can read the current lux
24value, of course.
25
26
27Detection
28---------
29
30The ISL29003 does not have an ID register which could be used to identify
31it, so the detection routine will just try to read from the configured I2C
32addess and consider the device to be present as soon as it ACKs the
33transfer.
34
35
36Sysfs entries
37-------------
38
39range:
40    0: 0 lux to 1000 lux (default)
41    1: 0 lux to 4000 lux
42    2: 0 lux to 16,000 lux
43    3: 0 lux to 64,000 lux
44
45resolution:
46    0: 2^16 cycles (default)
47    1: 2^12 cycles
48    2: 2^8 cycles
49    3: 2^4 cycles
50
51mode:
52    0: diode1's current (unsigned 16bit) (default)
53    1: diode1's current (unsigned 16bit)
54    2: difference between diodes (l1 - l2, signed 15bit)
55
56power_state:
57    0: device is disabled (default)
58    1: device is enabled
59
60lux (read only):
61    returns the value from the last sensor reading
62
63

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