Not having power is a pretty serious error so check that we are able to
enable the supply and error out if we can't.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@vger.kernel.org #3.8+; 3.0+ will need manual backport
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
We read the chip ID from the chip, use it to determine if the chip ID provided
to the driver is correct, and report it if wrong. We should also use the
correct chip ID to select supported functionality.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: stable@vger.kernel.org # 3.2+
Acked-by: Jean Delvare <khali@linux-fr.org>
Peak attributes were not initialized and cleared correctly.
Also, temp2_max is only supported on page 0 and thus does not need to be
an array.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: stable@vger.kernel.org # 3.2+
Acked-by: Jean Delvare <khali@linux-fr.org>
- Rework of the ACPI namespace scanning code from Rafael J. Wysocki
with contributions from Bjorn Helgaas, Jiang Liu, Mika Westerberg,
Toshi Kani, and Yinghai Lu.
- ACPI power resources handling and ACPI device PM update from
Rafael J. Wysocki.
- ACPICA update to version 20130117 from Bob Moore and Lv Zheng
with contributions from Aaron Lu, Chao Guan, Jesper Juhl, and
Tim Gardner.
- Support for Intel Lynxpoint LPSS from Mika Westerberg.
- cpuidle update from Len Brown including Intel Haswell support, C1
state for intel_idle, removal of global pm_idle.
- cpuidle fixes and cleanups from Daniel Lezcano.
- cpufreq fixes and cleanups from Viresh Kumar and Fabio Baltieri
with contributions from Stratos Karafotis and Rickard Andersson.
- Intel P-states driver for Sandy Bridge processors from
Dirk Brandewie.
- cpufreq driver for Marvell Kirkwood SoCs from Andrew Lunn.
- cpufreq fixes related to ordering issues between acpi-cpufreq and
powernow-k8 from Borislav Petkov and Matthew Garrett.
- cpufreq support for Calxeda Highbank processors from Mark Langsdorf
and Rob Herring.
- cpufreq driver for the Freescale i.MX6Q SoC and cpufreq-cpu0 update
from Shawn Guo.
- cpufreq Exynos fixes and cleanups from Jonghwan Choi, Sachin Kamat,
and Inderpal Singh.
- Support for "lightweight suspend" from Zhang Rui.
- Removal of the deprecated power trace API from Paul Gortmaker.
- Assorted updates from Andreas Fleig, Colin Ian King,
Davidlohr Bueso, Joseph Salisbury, Kees Cook, Li Fei,
Nishanth Menon, ShuoX Liu, Srinivas Pandruvada, Tejun Heo,
Thomas Renninger, and Yasuaki Ishimatsu.
/
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Merge tag 'pm+acpi-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael Wysocki:
- Rework of the ACPI namespace scanning code from Rafael J. Wysocki
with contributions from Bjorn Helgaas, Jiang Liu, Mika Westerberg,
Toshi Kani, and Yinghai Lu.
- ACPI power resources handling and ACPI device PM update from Rafael
J Wysocki.
- ACPICA update to version 20130117 from Bob Moore and Lv Zheng with
contributions from Aaron Lu, Chao Guan, Jesper Juhl, and Tim Gardner.
- Support for Intel Lynxpoint LPSS from Mika Westerberg.
- cpuidle update from Len Brown including Intel Haswell support, C1
state for intel_idle, removal of global pm_idle.
- cpuidle fixes and cleanups from Daniel Lezcano.
- cpufreq fixes and cleanups from Viresh Kumar and Fabio Baltieri with
contributions from Stratos Karafotis and Rickard Andersson.
- Intel P-states driver for Sandy Bridge processors from Dirk
Brandewie.
- cpufreq driver for Marvell Kirkwood SoCs from Andrew Lunn.
- cpufreq fixes related to ordering issues between acpi-cpufreq and
powernow-k8 from Borislav Petkov and Matthew Garrett.
- cpufreq support for Calxeda Highbank processors from Mark Langsdorf
and Rob Herring.
- cpufreq driver for the Freescale i.MX6Q SoC and cpufreq-cpu0 update
from Shawn Guo.
- cpufreq Exynos fixes and cleanups from Jonghwan Choi, Sachin Kamat,
and Inderpal Singh.
- Support for "lightweight suspend" from Zhang Rui.
- Removal of the deprecated power trace API from Paul Gortmaker.
- Assorted updates from Andreas Fleig, Colin Ian King, Davidlohr Bueso,
Joseph Salisbury, Kees Cook, Li Fei, Nishanth Menon, ShuoX Liu,
Srinivas Pandruvada, Tejun Heo, Thomas Renninger, and Yasuaki
Ishimatsu.
* tag 'pm+acpi-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (267 commits)
PM idle: remove global declaration of pm_idle
unicore32 idle: delete stray pm_idle comment
openrisc idle: delete pm_idle
mn10300 idle: delete pm_idle
microblaze idle: delete pm_idle
m32r idle: delete pm_idle, and other dead idle code
ia64 idle: delete pm_idle
cris idle: delete idle and pm_idle
ARM64 idle: delete pm_idle
ARM idle: delete pm_idle
blackfin idle: delete pm_idle
sparc idle: rename pm_idle to sparc_idle
sh idle: rename global pm_idle to static sh_idle
x86 idle: rename global pm_idle to static x86_idle
APM idle: register apm_cpu_idle via cpuidle
cpufreq / intel_pstate: Add kernel command line option disable intel_pstate.
cpufreq / intel_pstate: Change to disallow module build
tools/power turbostat: display SMI count by default
intel_idle: export both C1 and C1E
ACPI / hotplug: Fix concurrency issues and memory leaks
...
All around device tree changes destined for v3.8. Aside from the
documentation updates the highlights in this branch include:
- Kbuild changes for using CPP with .dts files
- locking fix from preempt_rt patchset
- include DT alias names in device uevent
- Selftest bugfixes and improvements
- New function for counting phandles stanzas in a property
- constify argument to of_node_full_name()
- Various bug fixes
This tree did also contain a commit to use platform_device_add instead
of open-coding the device add code, but it caused problems with amba
devices and needed to be reverted.
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Merge tag 'dt-for-linus' of git://git.secretlab.ca/git/linux
Pull device tree changes from Grant Likely:
"All around device tree changes destined for v3.8. Aside from the
documentation updates the highlights in this branch include:
- Kbuild changes for using CPP with .dts files
- locking fix from preempt_rt patchset
- include DT alias names in device uevent
- Selftest bugfixes and improvements
- New function for counting phandles stanzas in a property
- constify argument to of_node_full_name()
- Various bug fixes
This tree did also contain a commit to use platform_device_add instead
of open-coding the device add code, but it caused problems with amba
devices and needed to be reverted."
* tag 'dt-for-linus' of git://git.secretlab.ca/git/linux: (23 commits)
Revert "of: use platform_device_add"
kbuild: limit dtc+cpp include path
gpio: Make of_count_named_gpios() use new of_count_phandle_with_args()
of: Create function for counting number of phandles in a property
of/base: Clean up exit paths for of_parse_phandle_with_args()
of/selftest: Use selftest() macro throughout
of/selftest: Fix GPIOs selftest to cover the 7th case
of: fix recursive locking in of_get_next_available_child()
documentation/devicetree: Fix a typo in exynos-dw-mshc.txt
OF: convert devtree lock from rw_lock to raw spinlock
of/exynos_g2d: Add Bindings for exynos G2D driver
kbuild: create a rule to run the pre-processor on *.dts files
input: Extend matrix-keypad device tree binding
devicetree: Move NS2 LEDs binding into LEDs directory
of: use platform_device_add
powerpc/5200: Fix size to request_mem_region() call
documentation/devicetree: Fix typos
of: add 'const' to of_node_full_name parameter
of: Output devicetree alias names in uevent
DT: add vendor prefixes for Renesas and Toshiba
...
Fixes the following sparse warnings:
drivers/hwmon/ntc_thermistor.c:46:31: warning:
symbol 'ncpXXwb473' was not declared. Should it be static?
drivers/hwmon/ntc_thermistor.c:82:31: warning:
symbol 'ncpXXwl333' was not declared. Should it be static?
Cc: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The adt7420 is software compatible to the adt7410.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Use the I2C_ADDRS macro to initialize the I2C device's address_list. Doing so
saves a few lines of boilerplate code.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Only build the suspend/resume code if CONFIG_PM_SLEEP is selected. Currently the
code is built if CONFIG_PM is selected, but it will also be selected if only
runtime PM support is built into the kernel.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Make sure to clear the mode bits from the config register before setting the new
mode. Otherwise we might end up with a different mode than we want to.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This patch replaces the horribly coded of_count_named_gpios() with a
call to of_count_phandle_with_args() which is far more efficient. This
also changes the return value of of_gpio_count() & of_gpio_named_count()
from 'unsigned int' to 'int' so that it can return an error code. All
the users of that function are fixed up to correctly handle a negative
return value.
v2: Split GPIO portion into a separate patch
Tested-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Rearranged some data structures, and merged some common functions.
Overall code and data size reduction by more than 900 bytes.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
MAX34460 is a PMBus 12-Channel Voltage Monitor & Sequencer.
MAX34461 is a PMBus 16-Channel Voltage Monitor & Sequencer.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Not all PMBus devices support the byte status register at 0x78.
Try to use the word status register at 0x79 instead if that is the case.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Some of the ZL6100 compatible chips support monitoring a separate voltage pin,
VMON (ZL2004) or VDRV (ZL91xx). Report it as in2 / vmon.
The chips support implicit warning limits for VMON/VDRV, as percentage of the
respective critical voltage. Support by reading/writing the critical voltages
and calculating the associated warning voltages.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
For PMBus chips, modifying one limit register may affect other limits.
Since limits are all cached in the PMBus core driver, related changes
are not reflected in reported limits.
Introduce function to clear the attribute cache. After calling this function,
the core pmbus driver re-reads all cached values.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Some PMBus chips support monitoring an additional non-standard voltage. While
this voltage can in many cases be supported by simulating an additional sensor
page, this does not work in all cases. Specifically, it is problematic if the
data format is linear and the voltage is reported in LINEAR11 format. Since
output voltages use LINEAR16, and the exponent for LINEAR16 data is chip-wide
and fixed, this can result in overflows.
To solve this problem, add support for an additional virtual input voltage,
call it 'vmon', and treat this voltage as input voltage (which, when the chip
supports linear data format, uses LINEAR11).
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
So far, attribute memory was allocated by pre-calculating the maximum possible
amount of attributes. Not only does this waste memory, it is also risky because
the calculation might be wrong. It also requires a lot of defines to specify
the maximum number of attributes per class.
Allocate attribute memory using krealloc() instead. That means we have to use
kfree(), since devm_krealloc() does not exist, but that is still less costly
and less risky than trying to predict the number of attributes at the beginning.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Since memory is now allocated with dev_ functions, we no longer need to keep
track of allocated memory. Sensor memory allocation can therefore be
simplified significantly.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Boolean handling depends on storing the sensor data index in sensor_device_attr
as part of the index variable. This limits the number of sensor attributes to
256, and means the sensor sequence number actually has to be maintained to be
able to access sensor data from boolean functions.
Rework the code to store sensor pointers in the pmbus_boolean data structure
directly. With this approach, the number of supportable sensors is now
unlimited.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Since memory is now allocated with dev_ functions, we no longer need to keep
track of allocated memory. Memory allocation for booleans and labels can
therefore be simplified substantially by allocating it only as needed.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Fix:
ERROR: Macros with multiple statements should be enclosed in a do - while loop
by unwinding the problematic macros.
As a side effect, this patch reduces code size on x86_64 by 160 bytes and bss
size by 64 bytes.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Add support for the TI / Burr-Brown INA209 voltage / current / power
monitor.
Cc: Paul Hays <haysp@magma.net>
Cc: Ira W. Snyder <iws@ovro.caltech.edu>
Tested-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Add support for temp1_min_alarm and temp1_max_alarm
Signed-off-by: Chris Verges <kg4ysn@gmail.com>
[linux@roeck-us.net: cleanup; dropped platform data and interrupt support]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The LM73 supports four A/D conversion resolutions. The default used by
the existing lm73 driver is the chip's default, 11-bit (0.25 C/LSB).
This patch enables changing of this resolution from userspace via the
update_interval sysfs attribute. Full details on usage are included in
Documentation/hwmon/lm73.
Signed-off-by: Chris Verges <kg4ysn@gmail.com>
[linux@roeck-us.net: cleanup]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
While the LM73 is only specified for temperatures from -40 to +150 degrees C,
its power-up minimum and maximum temperature limits are -256 and +255.75
degrees C. For better consistency and to avoid confusion, clamp limits to
the power-up limits and not to -40 / +150 degrees C.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Assume that IT8771E and IT8772E are fully compatible with IT8728F.
IT8771E support contributed by Kelly Anderson.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <khali@linux-fr.org>
Add support for MAX6581, MAX6602, MAX6622, MAX6636, MAX6689, MAX6693,
MAX6694, MAX6697, MAX6698, and MAX6699 temperature sensors
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <khali@linux-fr.org>
Without this patch, the SHT15 driver may fail silently with a
non-bidirectional data line and/or an input-only clock line.
This patch checks the return value of gpio_direction_* function calls
and returns the error code (if any) to the caller. If an error occurs in
the read work function (work_funct_t), we wake the queue up directly
without updating the data->state flag, to notice the waiter of the I/O
error.
The patch also makes minor cleanups: s/error_ret/unlock for some labels
and uses devm_gpio_request_one() for the clock line.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
SENSORS_LIMIT and the generic clamp_val have the same functionality,
and clamp_val is more efficient.
This patch reduces text size by 9052 bytes and bss size by 11624 bytes
for x86_64 builds.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: George Joseph <george.joseph@fairview5.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
This patch renames the supply_uV* variables to supply_uv* to avoid
CamelCase as warned by the checkpatch.pl script.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The second argument of ACPI driver .remove() operation is only used
by the ACPI processor driver and the value passed to that driver
through it is always available from the given struct acpi_device
object's removal_type field. For this reason, the second ACPI driver
.remove() argument is in fact useless, so drop it.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Jiang Liu <jiang.liu@huawei.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Fix:
vexpress.c: In function ‘vexpress_hwmon_name_show’:
vexpress.c:34:2: error: implicit declaration of function
‘of_get_property’ [-Werror=implicit-function-declaration]
vexpress.c:34:27: warning: initialization makes pointer from integer
without a cast [enabled by default]
vexpress.c: In function ‘vexpress_hwmon_label_show’:
vexpress.c:43:22: warning: initialization makes pointer from integer
without a cast [enabled by default]
Seen if CONFIG_OF_DEVICE is not defined. of_get_property is declared in
of.h which is only included by of_device.h if CONFIG_OF_DEVICE is defined.
of.h needs to be included directly.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
CONFIG_HOTPLUG is going away as an option. As a result, the __dev*
markings need to be removed.
This change removes the use of __devinit, __devexit_p, __devinitdata,
__devinitconst, and __devexit from these drivers.
Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.
Cc: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Result of DIV_ROUND_CLOSEST is undefined for negative dividends if the divisor
variable type is unsigned. Fix by declaring divisor as signed variable.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
If an LM73 device does not exist on an I2C bus, attempts to communicate
with the device result in an error code returned from the i2c read/write
functions. The current lm73 driver casts that return value from a s32
type to a s16 type, then converts it to a temperature in celsius.
Because negative temperatures are valid, it is difficult to distinguish
between an error code printed to the response buffer and a negative
temperature recorded by the sensor.
The solution is to evaluate the return value from the i2c functions
before performing any temperature calculations. If the i2c function did
not succeed, the error code should be passed back through the virtual
file system layer instead of being printed into the response buffer.
Before:
$ cat /sys/class/hwmon/hwmon0/device/temp1_input
-46
After:
$ cat /sys/class/hwmon/hwmon0/device/temp1_input
cat: read error: No such device or address
Signed-off-by: Chris Verges <kg4ysn@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Since family 11h processors, AMD is exclusively using 7-bit VID codes
transmitted using a serial protocol over two pins (clock and data.)
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: David Hubbard <david.c.hubbard@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Extend support for reporting and selecting PECI temperature sensors
to IT8718, IT8720, IT8782, and IT8783. For IT8721, report the sensor
type for temp2 as Intel PECI (6) if the chip is configured to report
the PCH temperature.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
IT8721 and IT8728 support Intel PECI temperature reporting. Each sensor
can be programmed to display the temperature reported on the PECI interface.
If configured for Intel PECI, the driver reported the wrong sensor type for
the respective thermal sensor. Fix the code to correctly report it as
"Intel PECI (6)".
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
This simplifies the code, improves runtime performance, reduces
code size (about 280 bytes on x86_64), and makes it easier
to add support for new devices.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Fix checkpatch error:
ERROR: Macros with multiple statements should be enclosed in a do - while loop
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Also unify fan functions to use the same code for 8 and 16 bit fans.
This patch reduces code size by approximately 1,200 bytes on x86_64.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
The macro name show_sensor_offset is confusing since it related to the sensor
type, not an offset - even more so when we introduce offset attributes later on.
Replace it with direct definitions, and replace the show_sensor/set_sensor
function names with show_temp_type/set_temp_type. This also resolves a
checkpatch error.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
