Rename dependency of EXYNOS4_TMU in Kconfig to the existing one.
Signed-off-by: NDonggeun Kim <dg77.kim@samsung.com>
Signed-off-by: NMyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

Commit 2265cef2 (hwmon: (w83627ehf) Properly report PECI and AMD-SI
sensor types) results in kernel panic if data->temp_label was not
initialized.
The problem was found with chip W83627DHG-P.

Add check if data->temp->label was set before use.

Based on incomplete patch by Alexander Beregalov.
Reported-by: NAlexander Beregalov <a.beregalov@gmail.com>
Tested-by: NAlexander Beregalov <a.beregalov@gmail.com>
Cc: stable@kernel.org
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

The definition of TO_ATTR_NO in the non-SMP case is wrong. As the SMP
definition resolves to the correct value, just use this for both
cases.

Without this fix the temperature attributes are named temp0_* instead
of temp2_*, so libsensors won't pick them. Broken since kernel 3.0.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Tested-by: NPhil Sutter <phil@nwl.cc>
Cc: stable@kernel.org
Acked-by: NDurgadoss R <Durgadoss.r@intel.com>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>

This is essentially a stripped down version of the W83627DHG. Noticeable
difference is that it is still powered with +5V, as older models, even
though the ADC resolution is 8 mV as newer models have.

Thanks to Ulf Bruman (Saab Group) for doing all the testing.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>

The probe function has grown pretty large, I think it's time for some
cleanups, starting with these two simple ones:
* Move temp3/in6 check for the W83667HG later in the function, where
  it is done for all other chip types.
* Move temperature register setting to a separate function, to avoid
  code duplication.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>

When temperature sources are PECI or AMD-SI agents, it makes no sense
to report their type as diode or thermistor. Instead we must report
their digital nature.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: stable@kernel.org
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>

Make use of the new i2c_smbus_{read,write}_word_swapped functions.
This makes the driver code more compact and readable. It also ensures
proper error handling.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NJonathan Cameron <jic23@cam.ac.uk>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Cc: Dirk Eibach <eibach@gdsys.de>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Guillaume Ligneul <guillaume.ligneul@gmail.com>

Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>

Clean up the code to make it more readable:
* Remove reg_ and new_ prefixes from variable names, they made the
  names longer, causing extra line breaks, while not adding much
  value.
* Introduce struct device dev* = &client->dev in two functions, to
  avoid repeating client->dev everywhere in these functions.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>

With some configuration option combinations, we get the following
warnings:

drivers/hwmon/lm90.c: In function 'lm90_detect':
drivers/hwmon/lm90.c:1114: warning: 'chip_id' may be used uninitialized
in this function
drivers/hwmon/lm90.c:1114: warning: 'reg_config1' may be used
uninitialized in this function
drivers/hwmon/lm90.c:1114: warning: 'reg_convrate' may be used
uninitialized in this function
drivers/hwmon/lm90.c:1187: warning: 'reg_emerg2' may be used
uninitialized in this function
drivers/hwmon/lm90.c:1187: warning: 'reg_status2' may be used
uninitialized in this function

We can solve these easily by reading the register values first and
checking for errors later. These errors should be very rare, even in
the case of failed detection, so this change has no impact on
performance. And this makes checkpatch.pl happier.
Reported-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>

Preallocate a buffer for the response to sensor reads, and reuse it
for each read instead of allocating a new one each time. This should
be faster and should also avoid memory fragmentation.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NDarrick J. Wong <djwong@us.ibm.com>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>

There is no good reason that I can see why the failure to initialize
one instance should prevent other instances from being initialized.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NDarrick J. Wong <djwong@us.ibm.com>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>

I am under the impression that error paths in functions
aem_init_aem1_inst() and aem_init_aem2_inst() are incorrect. In
several cases, the function returns 0 on error, which I suspect is
not intended. Fix this by properly tracking error codes.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NDarrick J. Wong <djwong@us.ibm.com>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>

Word reads can cause trouble with some I2C devices, so do as much
detection as we can using only byte reads, and only use a word read in
the end to confirm the positive match. Also properly handle read
errors.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Cc: Robert Casanova <robertcasanova@nanometrics.ca>

A modprobe of hwmon drivers that read/write ISA addresses on a powerpc results
in a kernel Oops. These reads/writes are being done via the inb()/in_8() and
outb()/out_8() macros.

Prevent these drivers from being built for powerpc.
Signed-off-by: NDean Nelson <dnelson@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

A straightforward looking use of idr for a device id.
Signed-off-by: NJonathan Cameron <jic23@cam.ac.uk>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Tejun Heo <tj@kernel.org>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Acked-by: NDarrick J. Wong <djwong@us.ibm.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

hwmon was using an idr with a NULL pointer, so convert to an
ida which then allows use of Rusty's ida_simple_get.
Signed-off-by: NJonathan Cameron <jic23@cam.ac.uk>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Tejun Heo <tj@kernel.org>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Cc: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This file needs the full module.h header and up to now was just
implicitly capitalizing on it being present already.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>

It is more efficient to left-align 8-bit temperature values, so that
8-bit and 9-bit temperature values can be handled exactly the same way
in the rest of the code.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

Helper function is_word_sized has grown too much to be kept inline. It
was OK when there were only 6 word-sized registers but support for new
devices have made the list much longer. The function is also called
from more places than before.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

Explain why clones of the LM75 are generally not detected by the
driver, and why this isn't going to change. Also update the
documentation to reflect the list of chip names currently supported by
the driver.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

Move the check of fan pin usage to a separate function. This improves
readability, and will make it easier to integrate chip-specific
conditions.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

When in6 is missing, don't read the corresponding registers, it's a
waste of time. The logic is similar to what we do for fans and
temperatures.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

Add datasheet reference and device ID for ADT75.

The ADT75, like some other LM75 derivatives, needs to be instantiated
using methods 1, 2, or 4.
For more information see Documentation/i2c/instantiating-devices.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Acked-by: NJonathan Cameron <jic23@cam.ac.uk>
Acked-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

Shift operations can be used for sign extensions. Use it.
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Reviewed-by: NRobert Coulson <robert.coulson@ericsson.com>

Add device IDs and reference to datasheets for Lineage Power DC-DC converters.
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Reviewed-by: NRobert Coulson <robert.coulson@ericsson.com>

The LTC3880 PMBus command set is comparable to LTC2978. Add support for it
to the LTC2978 driver.
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Reviewed-by: NRobert Coulson <robert.coulson@ericsson.com>

Provide explicit driver for LTC2978 to enable support for minimum and peak
attributes. Remove ltc2978 chip id from generic pmbus driver.
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Reviewed-by: NRobert Coulson <robert.coulson@ericsson.com>

At least one PMBus chip supports peak attributes for READ_TEMPERATURE2.
Add virtual registers to be able to report it to the user.
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Reviewed-by: NRobert Coulson <robert.coulson@ericsson.com>

Driver for AD7314, ADT7301, and ADT7302, ported from IIO.

Currently dropped power down mode support.
Signed-off-by: NJonathan Cameron <jic23@cam.ac.uk>
[guenter.roeck@ericsson.com: Added MODULE_DEVICE_TABLE]
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

Add support for Intersil / Zilker Labs ZL2004, ZL2006, ZL2008, ZL2105, ZL2106,
ZL6100, and ZL6105.
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Reviewed-by: NRobert Coulson <robert.coulson@ericsson.com>

Always call _pmbus_read_byte() instead of pmbus_read_byte() in PMBus core
driver. With this change, device specific read functions can be implemented for
all registers.

Since the device specific read_byte function is now always called, we need to be
more careful with page validations. Only fail if the passed page number is larger
than 0, since -1 means "current page".
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Reviewed-by: NRobert Coulson <robert.coulson@ericsson.com>

EINVAL was over-used in the code. Replace it with more appropriate errors.
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Reviewed-by: NRobert Coulson <robert.coulson@ericsson.com>

Before this patch the f71882fg driver completely fails to initialize
on systems which have reserved settings in the pwm enable register, and
it disables all auto pwm sysfs attributes if any fan is controlled by
a digital sensor reading.

This patch changes the fail to initialize into don't register any attributes
for the fan for which there are reserved settings in the pwm enable register
and also makes the not registering of auto pwm sysfs attributes a per fan
thing.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

This is a preparation patch for not registering fan/pwm attributes for
some fans (rather then register them for all or for none).
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

This is a preparation patch for not registering fan/pwm attributes for
some fans (rather then register them for all or for none).
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

Since commit [c58543c8: genirq: Run irq handlers with interrupts disabled],
we run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).

So now this flag is a NOOP and can be removed.
Signed-off-by: NYong Zhang <yong.zhang0@gmail.com>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

This patch allows to read temperature
from TMU(Thermal Management Unit) of SAMSUNG EXYNOS4 series of SoC.
Signed-off-by: NDonggeun Kim <dg77.kim@samsung.com>
Signed-off-by: NMyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

ADM1276 is mostly compatible to ADM1275, with added support for input power
measurement. Add support for it to the ADM1275 driver.
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Acked-by: NJean Delvare <khali@linux-fr.org>

ADM1275 supports a second current limit, which can be configured as either lower
or upper limit. Add support for it and report it as either lower or upper
critical current limit.

Also replace error return code EINVAL for unsupported pages with ENXIO as this
is more appropriate for the observed condition.
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Acked-by: NJean Delvare <khali@linux-fr.org>