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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-07 05:56:51 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-07 05:56:51 +0300 |
commit | 7aefd944f038c7469571adb37769cb6f3924ecfa (patch) | |
tree | f0a8dc23633b6bbbc4f0bff932f332e847fb6c1b /Documentation/hwmon/ina209.rst | |
parent | ffa6f55eb6188ee73339cab710fabf30d13110a7 (diff) | |
parent | 39abe9d88b30a51029b0b29a708a4f4459034565 (diff) | |
download | linux-7aefd944f038c7469571adb37769cb6f3924ecfa.tar.xz |
Merge tag 'hwmon-for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon updates from Guenter Roeck:
- Add driver for Intersil ISL68137 PWM Controller
- Add driver for Lochnagar 2
- Add driver for Infineon IR38064 Voltage Regulator
- Add support for TMP75B to lm75 driver
- Convert documentation to ReST format
- Use request_muxed_region for Super-IO accesses in several drivers
- Add 'samples' attribute to ABI, and start using it
- Add support for custom sysfs attributes to pmbus drivers (used in
ISL68137 driver)
- Introduce HWMON_CHANNEL_INFO macro
- Automated changes:
- Use permission specific [SENSOR_][DEVICE_]ATTR variants
- Fix build warnings due to unused of_device_id structures
- Use HWMON_CHANNEL_INFO macro
- Various minor improvements and fixes
* tag 'hwmon-for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (125 commits)
hwmon: (lm75) Add support for TMP75B
dt-bindings: hwmon: Add tmp75b to lm75.txt
hwmon: (s3c) Use dev_get_drvdata()
hwmon: (max6650) Drop call to thermal_cdev_update
docs: hwmon: remove the extension from .rst files
docs: hwmon: convert three docs to ReST format
hwmon: (max6650) add thermal cooling device capability
hwmon: (ina3221) Add voltage conversion time settings
hwmon: (ina3221) Do not read-back to cache reg_config
docs: hwmon: Add an index file and rename docs to *.rst
docs: hwmon: convert remaining files to ReST format
docs: hwmon: misc files: convert to ReST format
docs: hwmon: pmbus files: convert to ReST format
docs: hwmon: k8temp, w83793: convert to ReST format
docs: hwmon: da9052, da9055: convert to ReST format
docs: hwmon: wm831x, wm8350: convert to ReST format
docs: hwmon: dme1737, vt1211: convert to ReST format
docs: hwmon: ads1015: convert to ReST format
docs: hwmon: asc7621: convert to ReST format
docs: hwmon: ibmpowernv: convert to ReST format
...
Diffstat (limited to 'Documentation/hwmon/ina209.rst')
-rw-r--r-- | Documentation/hwmon/ina209.rst | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/Documentation/hwmon/ina209.rst b/Documentation/hwmon/ina209.rst new file mode 100644 index 000000000000..64322075a145 --- /dev/null +++ b/Documentation/hwmon/ina209.rst @@ -0,0 +1,99 @@ +Kernel driver ina209 +==================== + +Supported chips: + + * Burr-Brown / Texas Instruments INA209 + + Prefix: 'ina209' + + Addresses scanned: - + + Datasheet: + http://www.ti.com/lit/gpn/ina209 + +Author: + - Paul Hays <Paul.Hays@cattail.ca> + - Ira W. Snyder <iws@ovro.caltech.edu> + - Guenter Roeck <linux@roeck-us.net> + + +Description +----------- + +The TI / Burr-Brown INA209 monitors voltage, current, and power on the high side +of a D.C. power supply. It can perform measurements and calculations in the +background to supply readings at any time. It includes a programmable +calibration multiplier to scale the displayed current and power values. + + +Sysfs entries +------------- + +The INA209 chip is highly configurable both via hardwiring and via +the I2C bus. See the datasheet for details. + +This tries to expose most monitoring features of the hardware via +sysfs. It does not support every feature of this chip. + +======================= ======================================================= +in0_input shunt voltage (mV) +in0_input_highest shunt voltage historical maximum reading (mV) +in0_input_lowest shunt voltage historical minimum reading (mV) +in0_reset_history reset shunt voltage history +in0_max shunt voltage max alarm limit (mV) +in0_min shunt voltage min alarm limit (mV) +in0_crit_max shunt voltage crit max alarm limit (mV) +in0_crit_min shunt voltage crit min alarm limit (mV) +in0_max_alarm shunt voltage max alarm limit exceeded +in0_min_alarm shunt voltage min alarm limit exceeded +in0_crit_max_alarm shunt voltage crit max alarm limit exceeded +in0_crit_min_alarm shunt voltage crit min alarm limit exceeded + +in1_input bus voltage (mV) +in1_input_highest bus voltage historical maximum reading (mV) +in1_input_lowest bus voltage historical minimum reading (mV) +in1_reset_history reset bus voltage history +in1_max bus voltage max alarm limit (mV) +in1_min bus voltage min alarm limit (mV) +in1_crit_max bus voltage crit max alarm limit (mV) +in1_crit_min bus voltage crit min alarm limit (mV) +in1_max_alarm bus voltage max alarm limit exceeded +in1_min_alarm bus voltage min alarm limit exceeded +in1_crit_max_alarm bus voltage crit max alarm limit exceeded +in1_crit_min_alarm bus voltage crit min alarm limit exceeded + +power1_input power measurement (uW) +power1_input_highest power historical maximum reading (uW) +power1_reset_history reset power history +power1_max power max alarm limit (uW) +power1_crit power crit alarm limit (uW) +power1_max_alarm power max alarm limit exceeded +power1_crit_alarm power crit alarm limit exceeded + +curr1_input current measurement (mA) + +update_interval data conversion time; affects number of samples used + to average results for shunt and bus voltages. +======================= ======================================================= + +General Remarks +--------------- + +The power and current registers in this chip require that the calibration +register is programmed correctly before they are used. Normally this is expected +to be done in the BIOS. In the absence of BIOS programming, the shunt resistor +voltage can be provided using platform data. The driver uses platform data from +the ina2xx driver for this purpose. If calibration register data is not provided +via platform data, the driver checks if the calibration register has been +programmed (ie has a value not equal to zero). If so, this value is retained. +Otherwise, a default value reflecting a shunt resistor value of 10 mOhm is +programmed into the calibration register. + + +Output Pins +----------- + +Output pin programming is a board feature which depends on the BIOS. It is +outside the scope of a hardware monitoring driver to enable or disable output +pins. |