5 * Texas Instruments ADS1015
7 Datasheet: Publicly available at the Texas Instruments website :
8 http://focus.ti.com/lit/ds/symlink/ads1015.pdf
11 Dirk Eibach, Guntermann & Drunck GmbH <eibach@gdsys.de>
16 This driver implements support for the Texas Instruments ADS1015.
18 This device is a 12-bit A-D converter with 4 inputs.
20 The inputs can be used single ended or in certain differential combinations.
22 The inputs can be exported to 8 sysfs input files in0_input - in7_input:
23 in0: Voltage over AIN0 and AIN1.
24 in1: Voltage over AIN0 and AIN3.
25 in2: Voltage over AIN1 and AIN3.
26 in3: Voltage over AIN2 and AIN3.
27 in4: Voltage over AIN0 and GND.
28 in5: Voltage over AIN1 and GND.
29 in6: Voltage over AIN2 and GND.
30 in7: Voltage over AIN3 and GND.
32 Which inputs are exported can be configured using platform data or devicetree.
34 By default all inputs are exported.
39 In linux/i2c/ads1015.h platform data is defined as:
41 struct ads1015_platform_data {
42 unsigned int exported_channels;
45 exported_channels is a bitmask that specifies which inputs should be exported.
48 struct ads1015_platform_data data = {
49 .exported_channels = (1 << 2) | (1 << 4)
52 In this case only in2_input and in4_input would be created.
57 The ads1015 node may have an "exported-channels" property.
58 exported_channels is a bitmask that specifies which inputs should be exported.
62 compatible = "ti,ads1015";
64 exported-channels = < 0x14 >;
67 In this case only in2_input and in4_input would be created.