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hwmon: (it87) Add support for IT8620E

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IT8620E is mostly compatible to IT7828F. Add generic support for it.

IT8620E supports up to 6 fan tachometers and 6 pwm controls.
Support for the 6th tachometer and for the additional pwm controls
are addded in separate patches.

Reviewed-by: Jean Delvare <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
This commit is contained in:
Guenter Roeck 2015-02-13 20:13:20 -08:00
commit 3ba9d977a9
3 changed files with 53 additions and 5 deletions
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13
Documentation/hwmon/it87
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@ -6,6 +6,10 @@ Supported chips:
Prefix: 'it8603'
Addresses scanned: from Super I/O config space (8 I/O ports)
Datasheet: Not publicly available
* IT8620E
Prefix: 'it8620'
Addresses scanned: from Super I/O config space (8 I/O ports)
Datasheet: Not publicly available
* IT8705F
Prefix: 'it87'
Addresses scanned: from Super I/O config space (8 I/O ports)
@ -106,7 +110,7 @@ motherboard models.
Description
-----------
This driver implements support for the IT8603E, IT8623E, IT8705F,
This driver implements support for the IT8603E, IT8620E, IT8623E, IT8705F,
IT8712F, IT8716F, IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E,
IT8771E, IT8772E, IT8781F, IT8782F, IT8783E/F, IT8786E, IT8790E, and SiS950
chips.
@ -147,8 +151,11 @@ The IT8728F, IT8771E, and IT8772E are considered compatible with the IT8721F,
until a datasheet becomes available (hopefully.)
The IT8603E/IT8623E is a custom design, hardware monitoring part is similar to
IT8728F. It only supports 16-bit fan mode, the full speed mode of the
fan is not supported (value 0 of pwmX_enable).
IT8728F. It only supports 3 fans, 16-bit fan mode, and the full speed mode
of the fan is not supported (value 0 of pwmX_enable).
The IT8620E is another custom design, hardware monitoring part is similar to
IT8728F. It only supports 16-bit fan mode.
The IT8790E supports up to 3 fans. 16-bit fan mode is always enabled.