diff options
Diffstat (limited to 'Documentation/hwmon')
| -rw-r--r-- | Documentation/hwmon/ibmpowernv | 41 | ||||
| -rw-r--r-- | Documentation/hwmon/lm75 | 5 | ||||
| -rw-r--r-- | Documentation/hwmon/ntc_thermistor | 13 | ||||
| -rw-r--r-- | Documentation/hwmon/pmbus | 5 | ||||
| -rw-r--r-- | Documentation/hwmon/powr1220 | 45 | ||||
| -rw-r--r-- | Documentation/hwmon/pwm-fan | 17 | ||||
| -rw-r--r-- | Documentation/hwmon/tmp103 | 28 | ||||
| -rw-r--r-- | Documentation/hwmon/tmp421 | 26 | ||||
| -rw-r--r-- | Documentation/hwmon/tps40422 | 64 |
9 files changed, 226 insertions, 18 deletions
diff --git a/Documentation/hwmon/ibmpowernv b/Documentation/hwmon/ibmpowernv new file mode 100644 index 000000000000..8826ba29db36 --- /dev/null +++ b/Documentation/hwmon/ibmpowernv @@ -0,0 +1,41 @@ +Kernel Driver IBMPOWERNV +======================== + +Supported systems: + * Any recent IBM P servers based on POWERNV platform + +Author: Neelesh Gupta + +Description +----------- + +This driver implements reading the platform sensors data like temperature/fan/ +voltage/power for 'POWERNV' platform. + +The driver uses the platform device infrastructure. It probes the device tree +for sensor devices during the __init phase and registers them with the 'hwmon'. +'hwmon' populates the 'sysfs' tree having attribute files, each for a given +sensor type and its attribute data. + +All the nodes in the DT appear under "/ibm,opal/sensors" and each valid node in +the DT maps to an attribute file in 'sysfs'. The node exports unique 'sensor-id' +which the driver uses to make an OPAL call to the firmware. + +Usage notes +----------- +The driver is built statically with the kernel by enabling the config +CONFIG_SENSORS_IBMPOWERNV. It can also be built as module 'ibmpowernv'. + +Sysfs attributes +---------------- + +fanX_input Measured RPM value. +fanX_min Threshold RPM for alert generation. +fanX_fault 0: No fail condition + 1: Failing fan +tempX_input Measured ambient temperature. +tempX_max Threshold ambient temperature for alert generation. +inX_input Measured power supply voltage +inX_fault 0: No fail condition. + 1: Failing power supply. +power1_input System power consumption (microWatt) diff --git a/Documentation/hwmon/lm75 b/Documentation/hwmon/lm75 index 2560a9c6d445..c6a5ff1b4641 100644 --- a/Documentation/hwmon/lm75 +++ b/Documentation/hwmon/lm75 @@ -42,13 +42,14 @@ Supported chips: Addresses scanned: none Datasheet: Publicly available at the ST website http://www.st.com/internet/analog/product/121769.jsp - * Texas Instruments TMP100, TMP101, TMP105, TMP75, TMP175, TMP275 - Prefixes: 'tmp100', 'tmp101', 'tmp105', 'tmp175', 'tmp75', 'tmp275' + * Texas Instruments TMP100, TMP101, TMP105, TMP112, TMP75, TMP175, TMP275 + Prefixes: 'tmp100', 'tmp101', 'tmp105', 'tmp112', 'tmp175', 'tmp75', 'tmp275' Addresses scanned: none Datasheet: Publicly available at the Texas Instruments website http://www.ti.com/product/tmp100 http://www.ti.com/product/tmp101 http://www.ti.com/product/tmp105 + http://www.ti.com/product/tmp112 http://www.ti.com/product/tmp75 http://www.ti.com/product/tmp175 http://www.ti.com/product/tmp275 diff --git a/Documentation/hwmon/ntc_thermistor b/Documentation/hwmon/ntc_thermistor index 3bfda94096fd..c5e05e2900a3 100644 --- a/Documentation/hwmon/ntc_thermistor +++ b/Documentation/hwmon/ntc_thermistor @@ -1,11 +1,16 @@ Kernel driver ntc_thermistor ================= -Supported thermistors: +Supported thermistors from Murata: * Murata NTC Thermistors NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, NCP15WL333 Prefixes: 'ncp15wb473', 'ncp18wb473', 'ncp21wb473', 'ncp03wb473', 'ncp15wl333' Datasheet: Publicly available at Murata +Supported thermistors from EPCOS: +* EPCOS NTC Thermistors B57330V2103 + Prefixes: b57330v2103 + Datasheet: Publicly available at EPCOS + Other NTC thermistors can be supported simply by adding compensation tables; e.g., NCP15WL333 support is added by the table ncpXXwl333. @@ -15,9 +20,9 @@ Authors: Description ----------- -The NTC thermistor is a simple thermistor that requires users to provide the -resistance and lookup the corresponding compensation table to get the -temperature input. +The NTC (Negative Temperature Coefficient) thermistor is a simple thermistor +that requires users to provide the resistance and lookup the corresponding +compensation table to get the temperature input. The NTC driver provides lookup tables with a linear approximation function and four circuit models with an option not to use any of the four models. diff --git a/Documentation/hwmon/pmbus b/Documentation/hwmon/pmbus index cf756ed48ff9..a3557da8f5b4 100644 --- a/Documentation/hwmon/pmbus +++ b/Documentation/hwmon/pmbus @@ -23,12 +23,11 @@ Supported chips: http://www.lineagepower.com/oem/pdf/PDT012A0X.pdf http://www.lineagepower.com/oem/pdf/UDT020A0X.pdf http://www.lineagepower.com/oem/pdf/MDT040A0X.pdf - * Texas Instruments TPS40400, TPS40422 - Prefixes: 'tps40400', 'tps40422' + * Texas Instruments TPS40400 + Prefixes: 'tps40400' Addresses scanned: - Datasheets: http://www.ti.com/lit/gpn/tps40400 - http://www.ti.com/lit/gpn/tps40422 * Generic PMBus devices Prefix: 'pmbus' Addresses scanned: - diff --git a/Documentation/hwmon/powr1220 b/Documentation/hwmon/powr1220 new file mode 100644 index 000000000000..21e44f71ae6e --- /dev/null +++ b/Documentation/hwmon/powr1220 @@ -0,0 +1,45 @@ +Kernel driver powr1220 +================== + +Supported chips: + * Lattice POWR1220AT8 + Prefix: 'powr1220' + Addresses scanned: none + Datasheet: Publicly available at the Lattice website + http://www.latticesemi.com/ + +Author: Scott Kanowitz <scott.kanowitz@gmail.com> + +Description +----------- + +This driver supports the Lattice POWR1220AT8 chip. The POWR1220 +includes voltage monitoring for 14 inputs as well as trim settings +for output voltages and GPIOs. This driver implements the voltage +monitoring portion of the chip. + +Voltages are sampled by a 12-bit ADC with a step size of 2 mV. +An in-line attenuator allows measurements from 0 to 6 V. The +attenuator is enabled or disabled depending on the setting of the +input's max value. The driver will enable the attenuator for any +value over the low measurement range maximum of 2 V. + +The input naming convention is as follows: + +driver name pin name +in0 VMON1 +in1 VMON2 +in2 VMON3 +in2 VMON4 +in4 VMON5 +in5 VMON6 +in6 VMON7 +in7 VMON8 +in8 VMON9 +in9 VMON10 +in10 VMON11 +in11 VMON12 +in12 VCCA +in13 VCCINP + +The ADC readings are updated on request with a minimum period of 1s. diff --git a/Documentation/hwmon/pwm-fan b/Documentation/hwmon/pwm-fan new file mode 100644 index 000000000000..18529d2e3bcf --- /dev/null +++ b/Documentation/hwmon/pwm-fan @@ -0,0 +1,17 @@ +Kernel driver pwm-fan +===================== + +This driver enables the use of a PWM module to drive a fan. It uses the +generic PWM interface thus it is hardware independent. It can be used on +many SoCs, as long as the SoC supplies a PWM line driver that exposes +the generic PWM API. + +Author: Kamil Debski <k.debski@samsung.com> + +Description +----------- + +The driver implements a simple interface for driving a fan connected to +a PWM output. It uses the generic PWM interface, thus it can be used with +a range of SoCs. The driver exposes the fan to the user space through +the hwmon's sysfs interface. diff --git a/Documentation/hwmon/tmp103 b/Documentation/hwmon/tmp103 new file mode 100644 index 000000000000..ec00a15645ba --- /dev/null +++ b/Documentation/hwmon/tmp103 @@ -0,0 +1,28 @@ +Kernel driver tmp103 +==================== + +Supported chips: + * Texas Instruments TMP103 + Prefix: 'tmp103' + Addresses scanned: none + Product info and datasheet: http://www.ti.com/product/tmp103 + +Author: + Heiko Schocher <hs@denx.de> + +Description +----------- + +The TMP103 is a digital output temperature sensor in a four-ball +wafer chip-scale package (WCSP). The TMP103 is capable of reading +temperatures to a resolution of 1°C. The TMP103 is specified for +operation over a temperature range of –40°C to +125°C. + +Resolution: 8 Bits +Accuracy: ±1°C Typ (–10°C to +100°C) + +The driver provides the common sysfs-interface for temperatures (see +Documentation/hwmon/sysfs-interface under Temperatures). + +Please refer how to instantiate this driver: +Documentation/i2c/instantiating-devices diff --git a/Documentation/hwmon/tmp421 b/Documentation/hwmon/tmp421 index 0cf07f824741..9e6fe5549ca1 100644 --- a/Documentation/hwmon/tmp421 +++ b/Documentation/hwmon/tmp421 @@ -8,12 +8,20 @@ Supported chips: Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html * Texas Instruments TMP422 Prefix: 'tmp422' - Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f + Addresses scanned: I2C 0x4c, 0x4d, 0x4e and 0x4f Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html * Texas Instruments TMP423 Prefix: 'tmp423' - Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f + Addresses scanned: I2C 0x4c and 0x4d Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html + * Texas Instruments TMP441 + Prefix: 'tmp441' + Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f + Datasheet: http://www.ti.com/product/tmp441 + * Texas Instruments TMP442 + Prefix: 'tmp442' + Addresses scanned: I2C 0x4c and 0x4d + Datasheet: http://www.ti.com/product/tmp442 Authors: Andre Prendel <andre.prendel@gmx.de> @@ -21,13 +29,13 @@ Authors: Description ----------- -This driver implements support for Texas Instruments TMP421, TMP422 -and TMP423 temperature sensor chips. These chips implement one local -and up to one (TMP421), up to two (TMP422) or up to three (TMP423) -remote sensors. Temperature is measured in degrees Celsius. The chips -are wired over I2C/SMBus and specified over a temperature range of -40 -to +125 degrees Celsius. Resolution for both the local and remote -channels is 0.0625 degree C. +This driver implements support for Texas Instruments TMP421, TMP422, +TMP423, TMP441, and TMP442 temperature sensor chips. These chips +implement one local and up to one (TMP421, TMP441), up to two (TMP422, +TMP442) or up to three (TMP423) remote sensors. Temperature is measured +in degrees Celsius. The chips are wired over I2C/SMBus and specified +over a temperature range of -40 to +125 degrees Celsius. Resolution +for both the local and remote channels is 0.0625 degree C. The chips support only temperature measurement. The driver exports the temperature values via the following sysfs files: diff --git a/Documentation/hwmon/tps40422 b/Documentation/hwmon/tps40422 new file mode 100644 index 000000000000..24bb0688d515 --- /dev/null +++ b/Documentation/hwmon/tps40422 @@ -0,0 +1,64 @@ +Kernel driver tps40422 +====================== + +Supported chips: + * TI TPS40422 + Prefix: 'tps40422' + Addresses scanned: - + Datasheet: http://www.ti.com/lit/gpn/tps40422 + +Author: Zhu Laiwen <richard.zhu@nsn.com> + + +Description +----------- + +This driver supports TI TPS40422 Dual-Output or Two-Phase Synchronous Buck +Controller with PMBus + +The driver is a client driver to the core PMBus driver. +Please see Documentation/hwmon/pmbus for details on PMBus client drivers. + + +Usage Notes +----------- + +This driver does not auto-detect devices. You will have to instantiate the +devices explicitly. Please see Documentation/i2c/instantiating-devices for +details. + + +Platform data support +--------------------- + +The driver supports standard PMBus driver platform data. + + +Sysfs entries +------------- + +The following attributes are supported. + +in[1-2]_label "vout[1-2]" +in[1-2]_input Measured voltage. From READ_VOUT register. +in[1-2]_alarm voltage alarm. + +curr[1-2]_input Measured current. From READ_IOUT register. +curr[1-2]_label "iout[1-2]" +curr1_max Maximum current. From IOUT_OC_WARN_LIMIT register. +curr1_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register. +curr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT status. +curr1_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. +curr2_alarm Current high alarm. From IOUT_OC_WARNING status. + +temp1_input Measured temperature. From READ_TEMPERATURE_2 register on page 0. +temp1_max Maximum temperature. From OT_WARN_LIMIT register. +temp1_crit Critical high temperature. From OT_FAULT_LIMIT register. +temp1_max_alarm Chip temperature high alarm. Set by comparing + READ_TEMPERATURE_2 on page 0 with OT_WARN_LIMIT if TEMP_OT_WARNING + status is set. +temp1_crit_alarm Chip temperature critical high alarm. Set by comparing + READ_TEMPERATURE_2 on page 0 with OT_FAULT_LIMIT if TEMP_OT_FAULT + status is set. +temp2_input Measured temperature. From READ_TEMPERATURE_2 register on page 1. +temp2_alarm Chip temperature alarm on page 1. |