提交 ec3e5a16 编写于 作者: G Guenter Roeck

hwmon: (w83627ehf) Add support for Nuvoton NCT6775F and NCT6776F

This patch adds support for NCT6775F and NCT6776F to the w83627ehf driver.
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Tested-by: Ian Dobson <i.dobson@planet-ian.com> (NCT6776F)
Tested-by: Zachary Marzec <zmarzec@gmail.com> (ASUS P8P67 PRO/NCT6776F)
Acked-by: NIan Dobson <i.dobson@planet-ian.com>
上级 b84bb518
......@@ -22,6 +22,14 @@ Supported chips:
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 <khali@linux-fr.org>
......@@ -34,24 +42,28 @@ Description
-----------
This driver implements support for the Winbond W83627EHF, W83627EHG,
W83627DHG, W83627DHG-P, W83667HG and W83667HG-B super I/O chips.
We will refer to them collectively as Winbond chips.
The chips implement three temperature sensors (up to four for 667HG-B),
five fan rotation speed sensors, ten analog voltage sensors (only nine for the
627DHG), one VID (6 pins for the 627EHF/EHG, 8 pins for the 627DHG and 667HG),
alarms with beep warnings (control unimplemented), and some automatic fan
regulation strategies (plus manual fan control mode).
The temperature sensor sources on W82677HG-B are configurable. temp4 is only
reported if its temperature source differs from the temperature sources of the
other three temperature sensors. The configured source for each of the
temperature sensors is reported in tempX_label.
W83627DHG, W83627DHG-P, W83667HG, W83667HG-B, W83667HG-I (NCT6775F),
and NCT6776F super I/O chips. We will refer to them collectively as
Winbond chips.
The chips implement three temperature sensors (up to four for 667HG-B, and nine
for NCT6775F and NCT6776F), five fan rotation speed sensors, ten analog voltage
sensors (only nine for the 627DHG), one VID (6 pins for the 627EHF/EHG, 8 pins
for the 627DHG and 667HG), 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 temp4, and 0.5 degC for temp2 and temp3. An alarm is
triggered when the temperature gets higher than high limit; it stays on until
the temperature falls below the hysteresis value.
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
......@@ -83,7 +95,8 @@ prog -> pwm4 (not on 667HG and 667HG-B; the programmable setting is not
name - this is a standard hwmon device entry. For the W83627EHF and W83627EHG,
it is set to "w83627ehf", for the W83627DHG it is set to "w83627dhg",
and for the W83667HG it is set to "w83667hg".
for the W83667HG and W83667HG-B it is set to "w83667hg", for NCT6775F it
is set to "nct6775", and for NCT6776F it is set to "nct6776".
pwm[1-4] - this file stores PWM duty cycle or DC value (fan speed) in range:
0 (stop) to 255 (full)
......@@ -93,6 +106,18 @@ pwm[1-4]_enable - this file controls mode of fan/temperature control:
* 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)
......
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