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3cdbbeeb DM |
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 | |
96d8d5ff | 32 | address and consider the device to be present as soon as it ACKs the |
3cdbbeeb DM |
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 |