hwmon: (dme1737) Add support for the SMSC SCH5027
Add support for the SCH5027. The differences to the DME1737 are: - No support for programmable temp offsets - In auto mode, PWM outputs stay on min value if temp goes below low threshold and can't be programmed to fully turn off - Different voltage scaling - No VID input Signed-off-by: Juerg Haefliger <juergh@gmail.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Jean Delvare
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@ -10,6 +10,10 @@ Supported chips:
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Prefix: 'sch311x'
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Addresses scanned: none, address read from Super-I/O config space
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Datasheet: http://www.nuhorizons.com/FeaturedProducts/Volume1/SMSC/311x.pdf
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* SMSC SCH5027
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Prefix: 'sch5027'
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Addresses scanned: I2C 0x2c, 0x2d, 0x2e
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Datasheet: Provided by SMSC upon request and under NDA
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Authors:
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Juerg Haefliger <juergh@gmail.com>
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@ -27,33 +31,31 @@ Module Parameters
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following boards:
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- VIA EPIA SN18000
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Note that there is no need to use this parameter if the driver loads without
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complaining. The driver will say so if it is necessary.
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Description
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-----------
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This driver implements support for the hardware monitoring capabilities of the
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SMSC DME1737 and Asus A8000 (which are the same) and SMSC SCH311x Super-I/O
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chips. These chips feature monitoring of 3 temp sensors temp[1-3] (2 remote
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diodes and 1 internal), 7 voltages in[0-6] (6 external and 1 internal) and up
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to 6 fan speeds fan[1-6]. Additionally, the chips implement up to 5 PWM
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outputs pwm[1-3,5-6] for controlling fan speeds both manually and
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SMSC DME1737 and Asus A8000 (which are the same), SMSC SCH5027, and SMSC
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SCH311x Super-I/O chips. These chips feature monitoring of 3 temp sensors
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temp[1-3] (2 remote diodes and 1 internal), 7 voltages in[0-6] (6 external and
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1 internal) and up to 6 fan speeds fan[1-6]. Additionally, the chips implement
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up to 5 PWM outputs pwm[1-3,5-6] for controlling fan speeds both manually and
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automatically.
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For the DME1737 and A8000, fan[1-2] and pwm[1-2] are always present. Fan[3-6]
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and pwm[3,5-6] are optional features and their availability depends on the
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configuration of the chip. The driver will detect which features are present
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during initialization and create the sysfs attributes accordingly.
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For the DME1737, A8000 and SCH5027, fan[1-2] and pwm[1-2] are always present.
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Fan[3-6] and pwm[3,5-6] are optional features and their availability depends on
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the configuration of the chip. The driver will detect which features are
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present during initialization and create the sysfs attributes accordingly.
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For the SCH311x, fan[1-3] and pwm[1-3] are always present and fan[4-6] and
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pwm[5-6] don't exist.
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The hardware monitoring features of the DME1737 and A8000 are only accessible
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via SMBus, while the SCH311x only provides access via the ISA bus. The driver
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will therefore register itself as an I2C client driver if it detects a DME1737
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or A8000 and as a platform driver if it detects a SCH311x chip.
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The hardware monitoring features of the DME1737, A8000, and SCH5027 are only
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accessible via SMBus, while the SCH311x only provides access via the ISA bus.
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The driver will therefore register itself as an I2C client driver if it detects
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a DME1737, A8000, or SCH5027 and as a platform driver if it detects a SCH311x
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chip.
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Voltage Monitoring
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@ -64,6 +66,7 @@ scaling resistors. The values returned by the driver therefore reflect true
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millivolts and don't need scaling. The voltage inputs are mapped as follows
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(the last column indicates the input ranges):
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DME1737, A8000:
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in0: +5VTR (+5V standby) 0V - 6.64V
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in1: Vccp (processor core) 0V - 3V
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in2: VCC (internal +3.3V) 0V - 4.38V
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@ -72,6 +75,24 @@ millivolts and don't need scaling. The voltage inputs are mapped as follows
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in5: VTR (+3.3V standby) 0V - 4.38V
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in6: Vbat (+3.0V) 0V - 4.38V
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SCH311x:
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in0: +2.5V 0V - 6.64V
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in1: Vccp (processor core) 0V - 2V
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in2: VCC (internal +3.3V) 0V - 4.38V
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in3: +5V 0V - 6.64V
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in4: +12V 0V - 16V
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in5: VTR (+3.3V standby) 0V - 4.38V
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in6: Vbat (+3.0V) 0V - 4.38V
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SCH5027:
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in0: +5VTR (+5V standby) 0V - 6.64V
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in1: Vccp (processor core) 0V - 3V
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in2: VCC (internal +3.3V) 0V - 4.38V
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in3: V2_IN 0V - 1.5V
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in4: V1_IN 0V - 1.5V
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in5: VTR (+3.3V standby) 0V - 4.38V
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in6: Vbat (+3.0V) 0V - 4.38V
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Each voltage input has associated min and max limits which trigger an alarm
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when crossed.
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