@@ -2,17 +2,25 @@ Kernel driver ads1015
=====================
Supported chips:
+
* Texas Instruments ADS1015
+
Prefix: 'ads1015'
- Datasheet: Publicly available at the Texas Instruments website :
- http://focus.ti.com/lit/ds/symlink/ads1015.pdf
+
+ Datasheet: Publicly available at the Texas Instruments website:
+
+ http://focus.ti.com/lit/ds/symlink/ads1015.pdf
+
* Texas Instruments ADS1115
+
Prefix: 'ads1115'
- Datasheet: Publicly available at the Texas Instruments website :
- http://focus.ti.com/lit/ds/symlink/ads1115.pdf
+
+ Datasheet: Publicly available at the Texas Instruments website:
+
+ http://focus.ti.com/lit/ds/symlink/ads1115.pdf
Authors:
- Dirk Eibach, Guntermann & Drunck GmbH <eibach@gdsys.de>
+ Dirk Eibach, Guntermann & Drunck GmbH <eibach@gdsys.de>
Description
-----------
@@ -24,14 +32,15 @@ This device is a 12/16-bit A-D converter with 4 inputs.
The inputs can be used single ended or in certain differential combinations.
The inputs can be made available by 8 sysfs input files in0_input - in7_input:
-in0: Voltage over AIN0 and AIN1.
-in1: Voltage over AIN0 and AIN3.
-in2: Voltage over AIN1 and AIN3.
-in3: Voltage over AIN2 and AIN3.
-in4: Voltage over AIN0 and GND.
-in5: Voltage over AIN1 and GND.
-in6: Voltage over AIN2 and GND.
-in7: Voltage over AIN3 and GND.
+
+ - in0: Voltage over AIN0 and AIN1.
+ - in1: Voltage over AIN0 and AIN3.
+ - in2: Voltage over AIN1 and AIN3.
+ - in3: Voltage over AIN2 and AIN3.
+ - in4: Voltage over AIN0 and GND.
+ - in5: Voltage over AIN1 and GND.
+ - in6: Voltage over AIN2 and GND.
+ - in7: Voltage over AIN3 and GND.
Which inputs are available can be configured using platform data or devicetree.
@@ -42,29 +51,34 @@ Platform Data
In linux/platform_data/ads1015.h platform data is defined, channel_data contains
configuration data for the used input combinations:
+
- pga is the programmable gain amplifier (values are full scale)
- 0: +/- 6.144 V
- 1: +/- 4.096 V
- 2: +/- 2.048 V
- 3: +/- 1.024 V
- 4: +/- 0.512 V
- 5: +/- 0.256 V
+
+ - 0: +/- 6.144 V
+ - 1: +/- 4.096 V
+ - 2: +/- 2.048 V
+ - 3: +/- 1.024 V
+ - 4: +/- 0.512 V
+ - 5: +/- 0.256 V
+
- data_rate in samples per second
- 0: 128
- 1: 250
- 2: 490
- 3: 920
- 4: 1600
- 5: 2400
- 6: 3300
-Example:
-struct ads1015_platform_data data = {
+ - 0: 128
+ - 1: 250
+ - 2: 490
+ - 3: 920
+ - 4: 1600
+ - 5: 2400
+ - 6: 3300
+
+Example::
+
+ struct ads1015_platform_data data = {
.channel_data = {
[2] = { .enabled = true, .pga = 1, .data_rate = 0 },
[4] = { .enabled = true, .pga = 4, .data_rate = 5 },
}
-};
+ };
In this case only in2_input (FS +/- 4.096 V, 128 SPS) and in4_input
(FS +/- 0.512 V, 2400 SPS) would be created.
Convert ads1015 to ReST format, in order to allow it to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> --- Documentation/hwmon/ads1015 | 72 ++++++++++++++++++++++--------------- 1 file changed, 43 insertions(+), 29 deletions(-)