Add support for the hwmon part of the Fintek F71858FG superio IC to the
f71882fg driver. Many thanks to Jelle de Jong for lending me a motherboard 
with this superio on it.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

While working on f71852fg support I noticed that the f8000 sysfs attr
table was missing entries for temp#_fault, which the f8000 does have and
which we were already reading.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

We depend up on the pwm_enable register (0x96) not containing any reserved
settings in various places. We were already checking to make sure there
were no reserved settings in the register for the f71862fg, this patch adds
the same checking for the f8000, while at it it also moves the code to
a more apropriate place so we don't need to check if the fan/pwm part
of the IC is enabled twice.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Currently we are using separate per model sysfs attr for the 3th pwm, because
the 3th pwm of the f8000 only has automatic mode and not manual mode. Doing
things this way was getting in the way for adding f71858fg support, so this
patch makes the pwm attr identical for all models, and instead adds a check
to store_pwm_enable() disallowing setting the 3th pwm to manual mode
on a f8000 IC.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Make sure __devexit and devexit_p() match in all hwmon drivers.
Suggested by a similar fix from Mike Frysinger.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: NJonathan Cameron <jic23@cam.ac.uk>

This patch fixes a number of cases where things were not properly
cleaned up when acpi_check_resource_conflict() returned an error,
causing oopses such as the one reported here:
https://bugzilla.redhat.com/show_bug.cgi?id=483208Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

If the F71882FG chip is at address 0x4e, then the probe at 0x2e will
fail with the following message in the logs:
f71882fg: Not a Fintek device

This is misleading because there is a Fintek device, just at a
different address. So I propose to degrade this message to a debug
message.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NHans de Goede <hdegoede@redhat.com>

Check for ACPI resource conflicts in hwmon drivers. I've included
all Super-I/O and PCI drivers.

I've voluntarily left out:
* Vendor-specific drivers: if they conflicted on any system, this would
  pretty much mean that they conflict on all systems, and we would know
  by now.
* Legacy ISA drivers (lm78 and w83781d): they only support chips found
  on old designs were ACPI either wasn't supported or didn't deal with
  thermal management.
* Drivers accessing the I/O resources indirectly (e.g. through SMBus):
  the checks are already done where they belong, i.e. in the bus drivers.
Signed-off-by: NJean Delvare <jdelvare@suse.de>
Acked-by: NDavid Hubbard <david.c.hubbard@gmail.com>

The RPM after conversion from / before conversion to a register value can be
much more than 65535 (up to 1500000), so putting this into an u16 can cause
overflows. This changes the functions to use an int to store / get RPM instead.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Print the mode (duty-cycle or RPM) of each fan on driver load.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Adjust auto_channels_temp show and store functions for different numbering of
temps between f8000 and other supported models.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

For some reason the fan_attr array for the f71862fg was missing the attr for
the 3th pwm output. This patch fixes this.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

And (finally) the patch actually adding f8000 support.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Remove the fan_mode module option it was a monstrosity to begin with, and
when adding support for the F8000 it becomes a real pain!
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

While studying the datasheets for adding F8000 support, I noticed that the
F718x2 has separate alarms (and beep control) for its max and crit limits.

We keep the temp#_alarm attributes as they are, even though it would be more
logical to rename them to temp#_max_alarm. Because lm_sensors v2 depends
on them.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

More F8000 prep work. Take over the checking if the hwmon part is not
powered down from the standalone f8000 driver.

This check is valid for all supported models.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Simplify fan and temp hyst. handling by treating the registers as an array of
nibbles instead of using switch cases. Also unify the way hysts are handled
between temp and fans, the temp code was storing the actual per temp hyst
values in 4 u8's, where as the fan code was storing actual register values.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

While working on adding F8000 support I noticed that various of the
store sysfs functions (and a few of the show also) had issues.

This patch fixes the following issues in these functions:
* store: storing the result of strto[u]l in an int, resulting in a possible
  overflow before boundary checking
* store: use of f71882fg_update_device(), we don't want to read the whole
  device in store functions, just the registers we need
* store: use of cached register values instead of reading the needed regs
  in the store function, including cases where f71882fg_update_device() was
  not used, this could cause real isues
* show: shown value is a calculation of 2 or more cached register reads,
  without locking the data struct.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

This patch is a preparation patch for adding F8000 support to the f71882fg
driver. If you look at the register addresses and esp, the bits used for
the temperature channels, then you will notice that it appears that they
start at 1 in a system meant to start at 0. As the F8000 actually uses the 0
addresses and bits, this patch changes the f71882fg driver to take 4
temperatures numbered 0-3 in to account, using 1-3 in this new scheme for
the temperatures actually present in the F718x2FG.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

The f71882fg driver did some io to ioports it hadn't reserved yet in its
find (detect) function, this patches moves this io to the probe function
where these ports are reserved and this io belongs.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

This patch adds support for the Fintek f71862fg superio monitoring
functions to the f71882fg driver.

This support has been tested without problems on a Jetway J9F2 by
Tony McConnell.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Various small cleanups as preparation for adding f71862fg support to the
f71882fg driver.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Add PWM (fan speed control) support to the f71882fg driver. Both
manual control and automatic (temperature-based) modes are supported.
Additionally, each mode has a PWM-based and an RPM-based variant. By
default we use the mode set by the BIOS.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Cc: Mark van Doesburg <mark.vandoesburg@hetnet.nl>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

A few cleanups that were originally part of a larger patch but are
better submitted separately.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Cc: Mark van Doesburg <mark.vandoesburg@hetnet.nl>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Convert f71882fg driver from SENSOR_ATTR to SENSOR_ATTR2 use, this is a
preparation patch for adding pwm support, which is broken out to make what
changes really in the pwm support patch clear.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Cc: Mark van Doesburg <mark.vandoesburg@hetnet.nl>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

These functions aren't used before being defined, so there's no point
in forward-declaring them.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NHans de Goede <j.w.r.degoede@hhs.nl>

While it is possible to force SMBus-based hardware monitoring chip
drivers to drive a not officially supported device, we do not have this
possibility for Super-I/O-based drivers. That's unfortunate because
sometimes newer chips are fully compatible and just forcing the driver
to load would work. Instead of that we have to tell the users to
recompile the kernel driver, which isn't an easy task for everyone.

So, I propose that we add a module parameter to all Super-I/O based
hardware monitoring drivers, letting advanced users force the driver
to load on their machine. The user has to provide the device ID of a
supposedly compatible device. This requires looking at the source code or
a datasheet, so I am confident that users can't randomly force a driver
without knowing what they are doing. Thus this should be relatively safe.

As you can see from the code, the implementation is pretty simple and
unintrusive.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NHans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: NMark M. Hoffman <mhoffman@lightlink.com>

Convert from class_device to device for hwmon_device_register/unregister
Signed-off-by: NTony Jones <tonyj@suse.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NKay Sievers <kay.sievers@vrfy.org>
Signed-off-by: NMark M. Hoffman <mhoffman@lightlink.com>

Signed-off-by: NMark M. Hoffman <mhoffman@lightlink.com>

This is the second version of a new driver for the hardware monitoring features
of the Fintek F71882FG and F71883FG Super-I/O chips. This version has several
small fixes for flaws discovered during the review of the first version.

This version of the driver does not support the pwm part of these chips (yet).
I'll first design a sysfs api for this and post that for discussion, and then
implement pwm support as an incremental patch over this one.

This driver supports all sensors of this chip, except for the vid inputs. The
vid inputs are somewhat documented in the datasheet, but I know nothing about
vid/vrm stuff. Help with this would be much appreciated.
Signed-off-by: NHans de Goede <j.w.r.degoede@hhs.nl>
Acked-by: NDarrick J. Wong <djwong@us.ibm.com>
Signed-off-by: NMark M. Hoffman <mhoffman@lightlink.com>