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