Fix fan4_ctl detection for IT8620, IT8628

fan4 control is enabled if bit 2 of GPIO control register 4 is disabled,
not when it is enabled. Since the check is for the skip condition, it is
reversed. This applies to both IT8620 and IT8628.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Add TODO file

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Experimental support for IT8607E

Assume for now that in5 and in6 are supported, and that fan control
is standard (unlike IT8603E).

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Add preliminary support for IT8792E

The chip is similar to IT8732E, but supports only three fans
instead of four (the driver currently does not support the 4th
fan on IT8732E).

Note that the chip ID is 0x8733, not 0x8792 as one would expect.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Ensure that pwm control cache is current before updating values

If sensor attributes were never read, the pwm control data has not been
initiialized, which can cause wrong driver behavior. Ensure that cached
data is current before acting on it.

Reported-by: Kevin Folz <kfolz@evertz.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Improve IT8622 support

Configuration registers on ITE8622 are different to 8620 and 8628 and
require special handling. Also, the chip supports up to 5 pwm controls.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Add support for IT8622E

Originally-from: Kevin Folz <kfolz@evertz.com>.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Update README to match upstream documentation

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Add feature flag indicating that VIN3 is connected to 5V

On IT8622E and IT8628E, VIN3 is expected to be connected to +5V.
Add feature flag and reflect in input label.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Synchronize with upstream version

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Add support for IT8628E and IT8732F

Also synchronize with upstream version

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Support for newer autopwm, plus other changes and cleanup

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Various enhancements, cleanup, and fixes

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Rearrange code to avoid forward declarations

Fix superio enable sequence for SIO address 0x4e

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Add support for two Super-IO chips

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Various enhancements

Add support for 6 pwm channels on IT8620E
Fix pwm frequency value for newer chips
Add second pwm frequency control for newer chips

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Some cleanup, plus AVCC3 support for ITE8620E

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Experimental support for ITE8790E

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Formatting cleanup

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

sync README with upstream version

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Merge pull request #3 from Zlika/master

Add support for IT8786E

Add support for IT8786E.

Add feature flag for VID support

Newer chips don't typically support VID inputs or control.
Add a feature flag for VID support to simplify adding support
for new chips.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Add feature flags for fan count and 16-bit fan configuration

Fans 4-5 are not supported on all chips and revisions. Also, 16-bit fan
counters only need to be enabled on older chips. Provide feature flags
to simplify adding support for new chips.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Add support for IT8781F

IT8781F is mostly compatible to IT8782F. Major difference is that it only
supports four instead of six UART channels, and therefore does not share
the uart6 pins.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Synchronize with upstream version

Also ensure the driver still builds with the latest upstream kernel.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

sync w/ upstream, plus preliminary PECI support

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

fix offset register access

Signed-off-by: Guenter <groeck@groeck-desktop.(none)>

Add temperature offset register support, and lots of cleanup (experimental)

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

sync with upstream version

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Drop unsupported chips from README file

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

sync with Jean's generic version. Drop support for unknown/untested chips

... as too risky. Manual chip type override accomplishes the same.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Merge with latest upstream version

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Add compat.h for backwards compatibility

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

it87: VIN7 does not depend on bit 2 of reg2C

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

it87: Do not attempt to re-route VIN7

Re-routing VIN7 does not work as expected, so better leave it alone.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

it87: IT8781F and IT8782F support monitoring 5 fans

... according to the summary datasheets available at the ITE web site.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

it87: Add experimental support for IT8781F and IT8782F

Assume that IT8781F and IT8782F are compatible with IT8783E/F.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

it87: IT8783E/F only support three fans

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

it87: Add experimental support for IT8771E, IT8772E

Open Hardware Monitor considers IT8771E, IT8772E to be compatible with IT8721F.
Let's see if that is correct. Use at your own risk.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

it87: Remove artifact from initial code changes

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

it87: Support older kernels

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

it87: Add missing chip name

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

it87: Initial / experimental support for IT8783E/F

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

it87: upstream version

Signed-off-by: Guenter Roeck <linux@roeck-us.net>