Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NMark M. Hoffman <mhoffman@lightlink.com>

Add support for the IT8716F and IT8718F fan4 and fan5. The late
revisions of the IT8712F have these too but support is harder to add
and nobody asked for it yet, so I didn't include it.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NMark M. Hoffman <mhoffman@lightlink.com>

Add support for IT8726F chip driver, which is just same as
IT8716F with additional glue logic for AMD power sequencing.
Signed-off-by: NRudolf Marek <r.marek@assembler.cz>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Let the user select the base PWM frequency when using the it87
hardware monitoring driver. Different frequencies can give better
control on some fans.

Also update the documentation to mention the PWM frequency control
files, with misc cleanups to the PWM section.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

This interface was useless as the LPC ISA-like interface is always
available, is faster, and is more reliable. This cuts the driver
size by some 20%.

This change is also required to later convert the it87 driver to a
platform driver, so that we can get rid of i2c-isa in a near future.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

it87: Copyright update

I think my contributions to the it87 driver over the past two
years qualify me as a co-author of this driver.

Also drop old comments of dubious usefulness.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

it87: Add support for the IT8718F

The IT8718F is a Super-I/O chip with integrated hardware monitoring
functions. It is very similar to the IT8716F, so adding support to the
it87 driver was pretty straightforward. The most significant difference
is that the IT8718F has up to 8 VID pins, instead of 6 for the older
chips.

For the IT8718F, the VID value can only be read from Super-I/O space.

Userspace support is already in lm_sensors SVN (to be soon released
as 2.10.1.)
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

it87: Add support for the IT8716F

The IT8716F is a Super-I/O chip with integrated hardware monitoring
functions. It is very similar to the IT8712F, so adding support to the
it87 driver was pretty straightforward. The most significant change here
is that the IT8716F has 16-bit fan speed counters, so the user no more
needs to tweak the fan clock dividers to get the best readings.

Userspace support is already in lm_sensors SVN (to be soon released
as 2.10.1.)

Thanks to Stian Oksavik, Olivier Nicolas, Prakash Punnoor and
Juergen Kilb for testing the early versions of this patch.

Thanks also to ITE for providing datasheets and answering my questions.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Only scan I2C address 0x2d. This is the default address and no IT87xxF
chip was ever seen on I2C at a different address. These chips are
better accessed through their ISA interface anyway.

This fixes bug #5889, although it doesn't address the whole class
of problems. We'd need the ability to blacklist arbitrary I2C addresses
on systems known to contain I2C devices which behave badly when probed.

Plan the I2C interface for removal as well. If nobody complains within
a year, it will confirm my impression that the I2C interface isn't
actually needed by anyone.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Drop legacy ISA address support from the it87 driver. All supported
chips are Super-I/O chips, so the device ISA address can be safely read
from Super-I/O space rather than blindly assumed.

Two nearby inaccurate documentation statements have been fixed as well:
* The IT8705F doesn't have an SMBus interface.
* The SiS950 doesn't have a distinct prefix.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Part 3: Move the drivers documentation, plus two general documentation
files.

Note that the patch "adds trailing whitespace", because it does move the
files as-is, and some files happen to have trailing whitespace.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch adds missing documentation for system health monitoring chips.
I would like to thank all people, who helped me with this project.
Signed-off-by: NRudolf Marek <r.marek@sh.cvut.cz>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>