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diff --git a/Documentation/hwmon/w83627ehf b/Documentation/hwmon/w83627ehf deleted file mode 100644 index 735c42a85ead..000000000000 --- a/Documentation/hwmon/w83627ehf +++ /dev/null @@ -1,190 +0,0 @@ -Kernel driver w83627ehf -======================= - -Supported chips: - * Winbond W83627EHF/EHG (ISA access ONLY) - Prefix: 'w83627ehf' - Addresses scanned: ISA address retrieved from Super I/O registers - Datasheet: not available - * Winbond W83627DHG - Prefix: 'w83627dhg' - Addresses scanned: ISA address retrieved from Super I/O registers - Datasheet: not available - * Winbond W83627DHG-P - Prefix: 'w83627dhg' - Addresses scanned: ISA address retrieved from Super I/O registers - Datasheet: not available - * Winbond W83627UHG - Prefix: 'w83627uhg' - Addresses scanned: ISA address retrieved from Super I/O registers - Datasheet: available from www.nuvoton.com - * Winbond W83667HG - Prefix: 'w83667hg' - Addresses scanned: ISA address retrieved from Super I/O registers - Datasheet: not available - * Winbond W83667HG-B - Prefix: 'w83667hg' - Addresses scanned: ISA address retrieved from Super I/O registers - Datasheet: Available from Nuvoton upon request - * Nuvoton NCT6775F/W83667HG-I - Prefix: 'nct6775' - Addresses scanned: ISA address retrieved from Super I/O registers - Datasheet: Available from Nuvoton upon request - * Nuvoton NCT6776F - Prefix: 'nct6776' - Addresses scanned: ISA address retrieved from Super I/O registers - Datasheet: Available from Nuvoton upon request - -Authors: - Jean Delvare <jdelvare@suse.de> - Yuan Mu (Winbond) - Rudolf Marek <r.marek@assembler.cz> - David Hubbard <david.c.hubbard@gmail.com> - Gong Jun <JGong@nuvoton.com> - -Description ------------ - -This driver implements support for the Winbond W83627EHF, W83627EHG, -W83627DHG, W83627DHG-P, W83627UHG, W83667HG, W83667HG-B, W83667HG-I -(NCT6775F), and NCT6776F super I/O chips. We will refer to them collectively -as Winbond chips. - -The chips implement 3 to 4 temperature sensors (9 for NCT6775F and NCT6776F), -2 to 5 fan rotation speed sensors, 8 to 10 analog voltage sensors, one VID -(except for 627UHG), alarms with beep warnings (control unimplemented), -and some automatic fan regulation strategies (plus manual fan control mode). - -The temperature sensor sources on W82677HG-B, NCT6775F, and NCT6776F are -configurable. temp4 and higher attributes are only reported if its temperature -source differs from the temperature sources of the already reported temperature -sensors. The configured source for each of the temperature sensors is provided -in tempX_label. - -Temperatures are measured in degrees Celsius and measurement resolution is 1 -degC for temp1 and and 0.5 degC for temp2 and temp3. For temp4 and higher, -resolution is 1 degC for W83667HG-B and 0.0 degC for NCT6775F and NCT6776F. -An alarm is triggered when the temperature gets higher than high limit; -it stays on until the temperature falls below the hysteresis value. -Alarms are only supported for temp1, temp2, and temp3. - -Fan rotation speeds are reported in RPM (rotations per minute). An alarm is -triggered if the rotation speed has dropped below a programmable limit. Fan -readings can be divided by a programmable divider (1, 2, 4, 8, 16, 32, 64 or -128) to give the readings more range or accuracy. The driver sets the most -suitable fan divisor itself. Some fans might not be present because they -share pins with other functions. - -Voltage sensors (also known as IN sensors) report their values in millivolts. -An alarm is triggered if the voltage has crossed a programmable minimum -or maximum limit. - -The driver supports automatic fan control mode known as Thermal Cruise. -In this mode, the chip attempts to keep the measured temperature in a -predefined temperature range. If the temperature goes out of range, fan -is driven slower/faster to reach the predefined range again. - -The mode works for fan1-fan4. Mapping of temperatures to pwm outputs is as -follows: - -temp1 -> pwm1 -temp2 -> pwm2 -temp3 -> pwm3 (not on 627UHG) -prog -> pwm4 (not on 667HG and 667HG-B; the programmable setting is not - supported by the driver) - -/sys files ----------- - -name - this is a standard hwmon device entry, it contains the name of - the device (see the prefix in the list of supported devices at - the top of this file) - -pwm[1-4] - this file stores PWM duty cycle or DC value (fan speed) in range: - 0 (stop) to 255 (full) - -pwm[1-4]_enable - this file controls mode of fan/temperature control: - * 1 Manual mode, write to pwm file any value 0-255 (full speed) - * 2 "Thermal Cruise" mode - * 3 "Fan Speed Cruise" mode - * 4 "Smart Fan III" mode - * 5 "Smart Fan IV" mode - - SmartFan III mode is not supported on NCT6776F. - - SmartFan IV mode is configurable only if it was configured at system - startup, and is only supported for W83677HG-B, NCT6775F, and NCT6776F. - SmartFan IV operational parameters can not be configured at this time, - and the various pwm attributes are not used in SmartFan IV mode. - The attributes can be written to, which is useful if you plan to - configure the system for a different pwm mode. However, the information - returned when reading pwm attributes is unrelated to SmartFan IV - operation. - -pwm[1-4]_mode - controls if output is PWM or DC level - * 0 DC output (0 - 12v) - * 1 PWM output - -Thermal Cruise mode -------------------- - -If the temperature is in the range defined by: - -pwm[1-4]_target - set target temperature, unit millidegree Celsius - (range 0 - 127000) -pwm[1-4]_tolerance - tolerance, unit millidegree Celsius (range 0 - 15000) - -there are no changes to fan speed. Once the temperature leaves the interval, -fan speed increases (temp is higher) or decreases if lower than desired. -There are defined steps and times, but not exported by the driver yet. - -pwm[1-4]_min_output - minimum fan speed (range 1 - 255), when the temperature - is below defined range. -pwm[1-4]_stop_time - how many milliseconds [ms] must elapse to switch - corresponding fan off. (when the temperature was below - defined range). -pwm[1-4]_start_output-minimum fan speed (range 1 - 255) when spinning up -pwm[1-4]_step_output- rate of fan speed change (1 - 255) -pwm[1-4]_stop_output- minimum fan speed (range 1 - 255) when spinning down -pwm[1-4]_max_output - maximum fan speed (range 1 - 255), when the temperature - is above defined range. - -Note: last six functions are influenced by other control bits, not yet exported - by the driver, so a change might not have any effect. - -Implementation Details ----------------------- - -Future driver development should bear in mind that the following registers have -different functions on the 627EHF and the 627DHG. Some registers also have -different power-on default values, but BIOS should already be loading -appropriate defaults. Note that bank selection must be performed as is currently -done in the driver for all register addresses. - -0x49: only on DHG, selects temperature source for AUX fan, CPU fan0 -0x4a: not completely documented for the EHF and the DHG documentation assigns - different behavior to bits 7 and 6, including extending the temperature - input selection to SmartFan I, not just SmartFan III. Testing on the EHF - will reveal whether they are compatible or not. - -0x58: Chip ID: 0xa1=EHF 0xc1=DHG -0x5e: only on DHG, has bits to enable "current mode" temperature detection and - critical temperature protection -0x45b: only on EHF, bit 3, vin4 alarm (EHF supports 10 inputs, only 9 on DHG) -0x552: only on EHF, vin4 -0x558: only on EHF, vin4 high limit -0x559: only on EHF, vin4 low limit -0x6b: only on DHG, SYS fan critical temperature -0x6c: only on DHG, CPU fan0 critical temperature -0x6d: only on DHG, AUX fan critical temperature -0x6e: only on DHG, CPU fan1 critical temperature - -0x50-0x55 and 0x650-0x657 are marked "Test Register" for the EHF, but "Reserved - Register" for the DHG - -The DHG also supports PECI, where the DHG queries Intel CPU temperatures, and -the ICH8 southbridge gets that data via PECI from the DHG, so that the -southbridge drives the fans. And the DHG supports SST, a one-wire serial bus. - -The DHG-P has an additional automatic fan speed control mode named Smart Fan -(TM) III+. This mode is not yet supported by the driver. |