diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/feature-removal-schedule.txt | 9 | ||||
| -rw-r--r-- | Documentation/hwmon/f71805f | 56 | ||||
| -rw-r--r-- | Documentation/hwmon/it87 | 15 | ||||
| -rw-r--r-- | Documentation/hwmon/k8temp | 2 | ||||
| -rw-r--r-- | Documentation/hwmon/pc87427 | 38 | ||||
| -rw-r--r-- | Documentation/hwmon/sysfs-interface | 4 | ||||
| -rw-r--r-- | Documentation/hwmon/w83627ehf | 2 | ||||
| -rw-r--r-- | Documentation/hwmon/w83791d | 2 | ||||
| -rw-r--r-- | Documentation/hwmon/w83793 | 110 |
9 files changed, 218 insertions, 20 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 64ce44da593..040f437c421 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -151,15 +151,6 @@ Who: Thomas Gleixner <tglx@linutronix.de> --------------------------- -What: I2C interface of the it87 driver -When: January 2007 -Why: The ISA interface is faster and should be always available. The I2C - probing is also known to cause trouble in at least one case (see - bug #5889.) -Who: Jean Delvare <khali@linux-fr.org> - ---------------------------- - What: Unused EXPORT_SYMBOL/EXPORT_SYMBOL_GPL exports (temporary transition config option provided until then) The transition config option will also be removed at the same time. diff --git a/Documentation/hwmon/f71805f b/Documentation/hwmon/f71805f index 2ca69df669c..bfd0f154959 100644 --- a/Documentation/hwmon/f71805f +++ b/Documentation/hwmon/f71805f @@ -6,6 +6,10 @@ Supported chips: Prefix: 'f71805f' Addresses scanned: none, address read from Super I/O config space Datasheet: Provided by Fintek on request + * Fintek F71872F/FG + Prefix: 'f71872f' + Addresses scanned: none, address read from Super I/O config space + Datasheet: Provided by Fintek on request Author: Jean Delvare <khali@linux-fr.org> @@ -13,8 +17,8 @@ Thanks to Denis Kieft from Barracuda Networks for the donation of a test system (custom Jetway K8M8MS motherboard, with CPU and RAM) and for providing initial documentation. -Thanks to Kris Chen from Fintek for answering technical questions and -providing additional documentation. +Thanks to Kris Chen and Aaron Huang from Fintek for answering technical +questions and providing additional documentation. Thanks to Chris Lin from Jetway for providing wiring schematics and answering technical questions. @@ -28,8 +32,11 @@ capabilities. It can monitor up to 9 voltages (counting its own power source), 3 fans and 3 temperature sensors. This chip also has fan controlling features, using either DC or PWM, in -three different modes (one manual, two automatic). The driver doesn't -support these features yet. +three different modes (one manual, two automatic). + +The Fintek F71872F/FG Super I/O chip is almost the same, with two +additional internal voltages monitored (VSB and battery). It also features +6 VID inputs. The VID inputs are not yet supported by this driver. The driver assumes that no more than one chip is present, which seems reasonable. @@ -42,7 +49,8 @@ Voltages are sampled by an 8-bit ADC with a LSB of 8 mV. The supported range is thus from 0 to 2.040 V. Voltage values outside of this range need external resistors. An exception is in0, which is used to monitor the chip's own power source (+3.3V), and is divided internally by a -factor 2. +factor 2. For the F71872F/FG, in9 (VSB) and in10 (battery) are also +divided internally by a factor 2. The two LSB of the voltage limit registers are not used (always 0), so you can only set the limits in steps of 32 mV (before scaling). @@ -61,9 +69,12 @@ in5 VIN5 +12V 200K 20K 11.00 1.05 V in6 VIN6 VCC1.5V 10K - 1.00 1.50 V in7 VIN7 VCORE 10K - 1.00 ~1.40 V (1) in8 VIN8 VSB5V 200K 47K 1.00 0.95 V +in10 VSB VSB3.3V int. int. 2.00 1.65 V (3) +in9 VBAT VBATTERY int. int. 2.00 1.50 V (3) (1) Depends on your hardware setup. (2) Obviously not correct, swapping R1 and R2 would make more sense. +(3) F71872F/FG only. These values can be used as hints at best, as motherboard manufacturers are free to use a completely different setup. As a matter of fact, the @@ -103,3 +114,38 @@ sensor. Each channel can be used for connecting either a thermal diode or a thermistor. The driver reports the currently selected mode, but doesn't allow changing it. In theory, the BIOS should have configured everything properly. + + +Fan Control +----------- + +Both PWM (pulse-width modulation) and DC fan speed control methods are +supported. The right one to use depends on external circuitry on the +motherboard, so the driver assumes that the BIOS set the method +properly. The driver will report the method, but won't let you change +it. + +When the PWM method is used, you can select the operating frequency, +from 187.5 kHz (default) to 31 Hz. The best frequency depends on the +fan model. As a rule of thumb, lower frequencies seem to give better +control, but may generate annoying high-pitch noise. Fintek recommends +not going below 1 kHz, as the fan tachometers get confused by lower +frequencies as well. + +When the DC method is used, Fintek recommends not going below 5 V, which +corresponds to a pwm value of 106 for the driver. The driver doesn't +enforce this limit though. + +Three different fan control modes are supported: + +* Manual mode + You ask for a specific PWM duty cycle or DC voltage. + +* Fan speed mode + You ask for a specific fan speed. This mode assumes that pwm1 + corresponds to fan1, pwm2 to fan2 and pwm3 to fan3. + +* Temperature mode + You define 3 temperature/fan speed trip points, and the fan speed is + adjusted depending on the measured temperature, using interpolation. + This mode is not yet supported by the driver. diff --git a/Documentation/hwmon/it87 b/Documentation/hwmon/it87 index e783fd62e30..74a80992d23 100644 --- a/Documentation/hwmon/it87 +++ b/Documentation/hwmon/it87 @@ -9,8 +9,7 @@ Supported chips: http://www.ite.com.tw/ * IT8712F Prefix: 'it8712' - Addresses scanned: I2C 0x2d - from Super I/O config space (8 I/O ports) + Addresses scanned: from Super I/O config space (8 I/O ports) Datasheet: Publicly available at the ITE website http://www.ite.com.tw/ * IT8716F @@ -53,6 +52,18 @@ Module Parameters misconfigured by BIOS - PWM values would be inverted. This option tries to fix this. Please contact your BIOS manufacturer and ask him for fix. + +Hardware Interfaces +------------------- + +All the chips suported by this driver are LPC Super-I/O chips, accessed +through the LPC bus (ISA-like I/O ports). The IT8712F additionally has an +SMBus interface to the hardware monitoring functions. This driver no +longer supports this interface though, as it is slower and less reliable +than the ISA access, and was only available on a small number of +motherboard models. + + Description ----------- diff --git a/Documentation/hwmon/k8temp b/Documentation/hwmon/k8temp index 30d123b8d92..0005c716614 100644 --- a/Documentation/hwmon/k8temp +++ b/Documentation/hwmon/k8temp @@ -8,7 +8,7 @@ Supported chips: Datasheet: http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/32559.pdf Author: Rudolf Marek -Contact: Rudolf Marek <r.marek@sh.cvut.cz> +Contact: Rudolf Marek <r.marek@assembler.cz> Description ----------- diff --git a/Documentation/hwmon/pc87427 b/Documentation/hwmon/pc87427 new file mode 100644 index 00000000000..9a0708f9f49 --- /dev/null +++ b/Documentation/hwmon/pc87427 @@ -0,0 +1,38 @@ +Kernel driver pc87427 +===================== + +Supported chips: + * National Semiconductor PC87427 + Prefix: 'pc87427' + Addresses scanned: none, address read from Super I/O config space + Datasheet: http://www.winbond.com.tw/E-WINBONDHTM/partner/apc_007.html + +Author: Jean Delvare <khali@linux-fr.org> + +Thanks to Amir Habibi at Candelis for setting up a test system, and to +Michael Kress for testing several iterations of this driver. + + +Description +----------- + +The National Semiconductor Super I/O chip includes complete hardware +monitoring capabilities. It can monitor up to 18 voltages, 8 fans and +6 temperature sensors. Only the fans are supported at the moment. + +This chip also has fan controlling features, which are not yet supported +by this driver either. + +The driver assumes that no more than one chip is present, which seems +reasonable. + + +Fan Monitoring +-------------- + +Fan rotation speeds are reported as 14-bit values from a gated clock +signal. Speeds down to 83 RPM can be measured. + +An alarm is triggered if the rotation speed drops below a programmable +limit. Another alarm is triggered if the speed is too low to to be measured +(including stalled or missing fan). diff --git a/Documentation/hwmon/sysfs-interface b/Documentation/hwmon/sysfs-interface index d1d390aaf62..efef3b962cd 100644 --- a/Documentation/hwmon/sysfs-interface +++ b/Documentation/hwmon/sysfs-interface @@ -208,12 +208,14 @@ temp[1-*]_auto_point[1-*]_temp_hyst **************** temp[1-*]_type Sensor type selection. - Integers 1 to 4 or thermistor Beta value (typically 3435) + Integers 1 to 6 or thermistor Beta value (typically 3435) RW 1: PII/Celeron Diode 2: 3904 transistor 3: thermal diode 4: thermistor (default/unknown Beta) + 5: AMD AMDSI + 6: Intel PECI Not all types are supported by all chips temp[1-*]_max Temperature max value. diff --git a/Documentation/hwmon/w83627ehf b/Documentation/hwmon/w83627ehf index caa610a297e..8a15a740875 100644 --- a/Documentation/hwmon/w83627ehf +++ b/Documentation/hwmon/w83627ehf @@ -10,7 +10,7 @@ Supported chips: Authors: Jean Delvare <khali@linux-fr.org> Yuan Mu (Winbond) - Rudolf Marek <r.marek@sh.cvut.cz> + Rudolf Marek <r.marek@assembler.cz> Description ----------- diff --git a/Documentation/hwmon/w83791d b/Documentation/hwmon/w83791d index 19b2ed739fa..db9881df88a 100644 --- a/Documentation/hwmon/w83791d +++ b/Documentation/hwmon/w83791d @@ -18,7 +18,7 @@ Credits: and Mark Studebaker <mdsxyz123@yahoo.com> w83792d.c: Chunhao Huang <DZShen@Winbond.com.tw>, - Rudolf Marek <r.marek@sh.cvut.cz> + Rudolf Marek <r.marek@assembler.cz> Additional contributors: Sven Anders <anders@anduras.de> diff --git a/Documentation/hwmon/w83793 b/Documentation/hwmon/w83793 new file mode 100644 index 00000000000..45e5408340e --- /dev/null +++ b/Documentation/hwmon/w83793 @@ -0,0 +1,110 @@ +Kernel driver w83793 +==================== + +Supported chips: + * Winbond W83793G/W83793R + Prefix: 'w83793' + Addresses scanned: I2C 0x2c - 0x2f + Datasheet: Still not published + +Authors: + Yuan Mu (Winbond Electronics) + Rudolf Marek <r.marek@assembler.cz> + + +Module parameters +----------------- + +* reset int + (default 0) + This parameter is not recommended, it will lose motherboard specific + settings. Use 'reset=1' to reset the chip when loading this module. + +* force_subclients=bus,caddr,saddr1,saddr2 + This is used to force the i2c addresses for subclients of + a certain chip. Typical usage is `force_subclients=0,0x2f,0x4a,0x4b' + to force the subclients of chip 0x2f on bus 0 to i2c addresses + 0x4a and 0x4b. + + +Description +----------- + +This driver implements support for Winbond W83793G/W83793R chips. + +* Exported features + This driver exports 10 voltage sensors, up to 12 fan tachometer inputs, + 6 remote temperatures, up to 8 sets of PWM fan controls, SmartFan + (automatic fan speed control) on all temperature/PWM combinations, 2 + sets of 6-pin CPU VID input. + +* Sensor resolutions + If your motherboard maker used the reference design, the resolution of + voltage0-2 is 2mV, resolution of voltage3/4/5 is 16mV, 8mV for voltage6, + 24mV for voltage7/8. Temp1-4 have a 0.25 degree Celsius resolution, + temp5-6 have a 1 degree Celsiis resolution. + +* Temperature sensor types + Temp1-4 have 3 possible types. It can be read from (and written to) + temp[1-4]_type. + - If the value of 0, the related temperature channel stops + monitoring. + - If the value is 3, it starts monitoring using a remote termal diode + (default). + - If the value is 5, it starts monitoring using the temperature sensor + in AMD CPU and get result by AMDSI. + - If the value is 6, it starts monitoring using the temperature sensor + in Intel CPU and get result by PECI. + Temp5-6 can be connected to external thermistors (value of + temp[5-6]_type is 4). They can also be disabled (value is 0). + +* Alarm mechanism + For voltage sensors, an alarm triggers if the measured value is below + the low voltage limit or over the high voltage limit. + For temperature sensors, an alarm triggers if the measured value goes + above the high temperature limit, and wears off only after the measured + value drops below the hysteresis value. + For fan sensors, an alarm triggers if the measured value is below the + low speed limit. + +* SmartFan/PWM control + If you want to set a pwm fan to manual mode, you just need to make sure it + is not controlled by any temp channel, for example, you want to set fan1 + to manual mode, you need to check the value of temp[1-6]_fan_map, make + sure bit 0 is cleared in the 6 values. And then set the pwm1 value to + control the fan. + + Each temperature channel can control all the 8 PWM outputs (by setting the + corresponding bit in tempX_fan_map), you can set the temperature channel + mode using temp[1-6]_pwm_enable, 2 is Thermal Cruise mode and 3 + is the SmartFanII mode. Temperature channels will try to speed up or + slow down all controlled fans, this means one fan can receive different + PWM value requests from different temperature channels, but the chip + will always pick the safest (max) PWM value for each fan. + + In Thermal Cruise mode, the chip attempts to keep the temperature at a + predefined value, within a tolerance margin. So if tempX_input > + thermal_cruiseX + toleranceX, the chip will increase the PWM value, + if tempX_input < thermal_cruiseX - toleranceX, the chip will decrease + the PWM value. If the temperature is within the tolerance range, the PWM + value is left unchanged. + + SmartFanII works differently, you have to define up to 7 PWM, temperature + trip points, defining a PWM/temperature curve which the chip will follow. + While not fundamentally different from the Thermal Cruise mode, the + implementation is quite different, giving you a finer-grained control. + +* Chassis + If the case open alarm triggers, it will stay in this state unless cleared + by any write to the sysfs file "chassis". + +* VID and VRM + The VRM version is detected automatically, don't modify the it unless you + *do* know the cpu VRM version and it's not properly detected. + + +Notes +----- + + Only Fan1-5 and PWM1-3 are guaranteed to always exist, other fan inputs and + PWM outputs may or may not exist depending on the chip pin configuration. |