summaryrefslogtreecommitdiffstats
path: root/drivers/hwmon/Kconfig
Commit message (Collapse)AuthorAgeFilesLines
* hwmon: (it87) Add IT8728F supportJean Delvare2012-01-161-2/+2
| | | | | | | | | | Until we get a datasheet for the IT8728F, treat it as fully compatible with the IT8721F, as it seems to work reasonably well. This closes kernel bug #27262. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
* hwmon: (lm63) Add support for LM96163Guenter Roeck2012-01-161-2/+2
| | | | | | | | | | LM96163 is an enhanced version of LM63 with improved PWM resolution. Add chip detection code as well as support for improved PWM resolution if the chip is configured to use it. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Tested-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* hwmon: (f75375s) Add support for F75387SG/RGBjörn Gerhart2012-01-051-2/+2
| | | | | | | | | | | Fintek F75387SG/RG is mostly compatible to F75373/F75375. Add support for it to the F75375S driver. Fan support for F75387SG/RG has been implemented but not tested. Cc: Riku Voipio <riku.voipio@iki.fi> Signed-off-by: Bjoern Gerhart <oss@extracloud.de> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
* hwmon: (exynos4_tmu) Fix Kconfig dependencyDonggeun Kim2011-11-171-1/+1
| | | | | | | | | Rename dependency of EXYNOS4_TMU in Kconfig to the existing one. Signed-off-by: Donggeun Kim <dg77.kim@samsung.com> Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
* hwmon: (w83627ehf) Add support for the W83627UHGJean Delvare2011-11-041-2/+3
| | | | | | | | | | | 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: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
* hwmon: Avoid building drivers for powerpc that read/write ISA addressesDean Nelson2011-11-041-2/+13
| | | | | | | | | | | 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: Dean Nelson <dnelson@redhat.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* hwmon: (lm75) Add support for Analog Devices ADT75Michael Hennerich2011-10-241-0/+1
| | | | | | | | | | | | | 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: Michael Hennerich <michael.hennerich@analog.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
* hwmon: AD7314 driver (ported from IIO)Jonathan Cameron2011-10-241-0/+10
| | | | | | | | | | Driver for AD7314, ADT7301, and ADT7302, ported from IIO. Currently dropped power down mode support. Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> [guenter.roeck@ericsson.com: Added MODULE_DEVICE_TABLE] Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
* hwmon: Add driver for EXYNOS4 TMUDonggeun Kim2011-10-241-0/+10
| | | | | | | | | | This patch allows to read temperature from TMU(Thermal Management Unit) of SAMSUNG EXYNOS4 series of SoC. Signed-off-by: Donggeun Kim <dg77.kim@samsung.com> Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
* Merge branch 'hwmon-for-linus' of ↵Linus Torvalds2011-07-301-89/+38
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging: (24 commits) hwmon: (lm90) Refactor reading of config2 register hwmon: (lm90) Make SA56004 detection more robust hwmon: (lm90) Simplify handling of extended local temp register hwmon: (pmbus) Add client driver for LM25066, LM5064, and LM5066 hwmon: (max34440) Add support for peak attributes hwmon: (max8688) Add support for peak attributes hwmon: (max16064) Add support for peak attributes hwmon: (adm1275) Add support for peak attributes hwmon: (pmbus) Add support for peak attributes hwmon: Add new attributes to sysfs ABI hwmon: (pmbus) Strengthen check for status register existence hwmon: (pmbus) Add support for virtual pages hwmon: (pmbus) Support reading and writing of word registers in device specific code hwmon: (pmbus) Increase attribute name size hwmon: (pmbus) Add ADP4000, NCP4200 and NCP4208 to list of supported devices hwmon: (pmbus) Add support for VID output voltage mode hwmon: (pmbus) Move PMBus drivers to drivers/hwmon/pmbus hwmon: (coretemp) Add core/pkg threshold support to Coretemp hwmon: (lm95241) Add support for LM95231 hwmon: LM95245 driver ...
| * hwmon: (pmbus) Move PMBus drivers to drivers/hwmon/pmbusGuenter Roeck2011-07-281-86/+1
| | | | | | | | | | | | | | | | Since the number of PMBus drivers is getting large, move them into directory drivers/hwmon/pmbus to improve readability and scalability. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Reviewed-by: Robert Coulson <robert.coulson@ericsson.com>
| * hwmon: (lm95241) Add support for LM95231Guenter Roeck2011-07-281-2/+3
| | | | | | | | | | | | | | | | LM95231 is fully compatible to LM95241; only necessary change is to add chip detection. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Jean Delvare <khali@linux-fr.org>
| * hwmon: LM95245 driverAlexander Stein2011-07-281-0/+9
| | | | | | | | | | | | | | | | A hwmon driver for the National Semiconductor LM95245 dual temperature sensors chip. Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
| * hwmon: (lm90) Add support for Philips SA56004Stijn Devriendt2011-07-281-1/+1
| | | | | | | | | | | | | | Add support for Philips SA56004, an LM86 compatible temperature sensor. Signed-off-by: Stijn Devriendt <sdevrien@cisco.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
| * hwmon: Driver for NTC ThermistorsDonggeun Kim2011-07-281-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for NTC Thermistor series. In this release, the following thermistors are supported: NCP15WB473, NCP18WB473, NCP03WB473, and NCP15WL333. This driver is based on the datasheet of MURATA. The driver in the patch does conversion from the raw ADC value (either voltage or resistence) to temperature. In order to use voltage values as input, the circuit schematics should be provided with the platform data. A compensation table for each type of thermistor is provided for the conversion. Signed-off-by: Donggeun Kim <dg77.kim@samsung.com> Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: KyungMin Park <kyungmin.park@samsung.com> Reviewed-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
| * hwmon: Driver for MAX1668David George2011-07-281-0/+10
| | | | | | | | | | | | | | | | This patch adds support for MAX1668 and compatible temperature sensors. Signed-off-by: David George <david.george@ska.ac.za> [guenter.roeck@ericsson.com: minor cleanup of probe error path] Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
* | hwmon: (via-cputemp) Add VID reporting supportJean Delvare2011-07-251-0/+1
| | | | | | | | | | | | | | | | | | At least VIA family 6 model D CPU report the VID settings in a MSR, so expose the value to user-space. Not sure about model A. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Tested-by: Jeff Rickman <jrickman@myamigos.us>
* | hwmon: New driver sch5636Hans de Goede2011-07-251-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a new driver for SMSC SCH5636 Super I/O chips. The chips include an embedded microcontroller for hardware monitoring solutions, allowing motherboard manufacturers to create their own custom hwmon solution based upon the SCH5636. Currently the sch5636 driver only supports the Fujitsu Theseus SCH5636 based hwmon solution. The sch5636 driver runs a sanity check on loading to ensure it is dealing with a Fujitsu Theseus and not with another custom SCH5636 based hwmon solution. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* | hwmon: (sch5627) Factor out some code shared with sch5636 driverHans de Goede2011-07-251-0/+5
|/ | | | | | | | This patch adds a new sch56xx-common.ko which contains code which will also be used in the new sch5636 driver. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* hwmon: (f71882fg) Add support for the F71869AHans de Goede2011-07-031-1/+1
| | | | | | | | | | | The F71869A is almost the same as the F71869F/E, except that it has the normal number of temp and pwm zones for a F71882FG derived chip, rather then the limited number of the F71869F/E. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Tested-by: Max Baldwin <archerseven@gmail.com> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* hwmon: New driver for the SMSC EMC6W201Jean Delvare2011-05-251-0/+10
| | | | | | | | | | | This is a new driver for the SMSC EMC6W201 hardware monitoring device. The device is functionally close to the EMC6D100 series, but is register-incompatible. Signed-off-by: Jean Delvare <khali@linux-fr.org> Tested-by: Harry G McGavran Jr <w5pny@arrl.net> Tested-by: Jeff Rickman <jrickman@myamigos.us> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
* hwmon: (abituguru) Depend on DMIJean Delvare2011-05-251-2/+2
| | | | | | | | | | | | | | | | | The abituguru drivers are only built on X86, where DMI support is now enabled by default. So let these drivers depend on DMI, for the following gains: * Robustness and safety. Detection of these devices is weak and uses non-standard methods, it should really be limited to Abit boards unless the user explicitly asks otherwise. * Code simplicity. The code is easier to read without ifdefs. * Better build testing coverage. Now there's only one way to build the drivers, so no risk of build failure on exotic systems. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Alistair John Strachan <alistair@devzero.co.uk> Acked-by: Hans de Goede <hdegoede@redhat.com>
* Move ACPI power meter driver to hwmonJean Delvare2011-05-251-0/+10
| | | | | | | | | | | | | As discussed earlier, the ACPI power meter driver would better live in drivers/hwmon, as its only purpose is to create hwmon-style interfaces for ACPI 4.0 power meter devices. Users are more likely to look for it there, and less likely to accidentally hide it by unselecting its dependencies. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: "Darrick J. Wong" <djwong@us.ibm.com> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Cc: Len Brown <lenb@kernel.org>
* hwmon: (f71882fg) Add support for F71808AHans de Goede2011-05-251-1/+1
| | | | | Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* hwmon: (asc7621) Drop duplicate dependencyJean Delvare2011-05-251-1/+1
| | | | | | | | The config SENSORS_ASC7621 entry is inside an if HWMON / endif block, so it already depends on HWMON. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
* hwmon: Add driver for AMD family 15h processor power informationAndreas Herrmann2011-05-251-0/+10
| | | | | | | | | | | | | | | | | | This CPU family provides NB register values to gather following TDP information * ProcessorPwrWatts: Specifies in Watts the maximum amount of power the processor can support. * CurrPwrWatts: Specifies in Watts the current amount of power being consumed by the processor. This driver provides * power1_crit (ProcessorPwrWatts) * power1_input (CurrPwrWatts) Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* hwmon: (k10temp) Add support for Fam15h (Bulldozer)Andre Przywara2011-05-251-2/+2
| | | | | | | | | | | | AMDs upcoming CPUs use the same mechanism for the internal temperature reporting as the Fam10h CPUs, so we just needed to add the appropriate PCI-ID to the list. This allows to use the k10temp driver on those CPUs. While at it change the Kconfig entry to be more generic. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Acked-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* hwmon: Remove pkgtemp driverGuenter Roeck2011-05-211-7/+0
| | | | | | | | | After the merge of pkgtemp functionality into the coretemp driver, the pkgtemp driver is no longer necessary. Remove it. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Jean Delvare <khali@linux-fr.org>
* hwmon: (pmbus) Add support for Analog Devices ADM1275Guenter Roeck2011-05-191-0/+10
| | | | | | | | Add support for Analog Devices ADM1275 Hot-Swap Controller and Digital Power Monitor Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Reviewed-by: Tom Grennan <tom.grennan@ericsson.com>
* hwmon: (pmbus) Support for TI UCD90xxx series Sequencer and System Health ↵Guenter Roeck2011-05-191-1/+13
| | | | | | | | | | Controllers Hardware monitoring support for TI UCD90120, UCD90124, UCD9090, and UCD90910 Sequencer and System Health Controllers. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Reviewed-by: Tom Grennan <tom.grennan@ericsson.com>
* hwmon: (pmbus) Add support for TI UCD9200 series of PWM System ControllersGuenter Roeck2011-05-191-0/+10
| | | | | | | | This patch adds hardware monitoring support for TI UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, and UCD9248 Digital PWM System Controllers. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Reviewed-by: Tom Grennan <tom.grennan@ericsson.com>
* hwmon: Driver for MAX16065 System Manager and compatiblesGuenter Roeck2011-05-191-0/+16
| | | | | | | | | This patch adds hardware monitoring support for Maxim MAX16065, MAX16066, MAX16067, MAX16068, MAX16070, and MAX16071 flash-configurable system managers with nonvolatile fault registers. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Reviewed-by: Jean Delvare <khali@linux-fr.org>
* hwmon: Add support for MAX6642Per Dalén2011-05-191-0/+11
| | | | | | | | MAX6642 is a SMBus-Compatible Remote/Local Temperature Sensor with Overtemperature Alarm from Maxim. Signed-off-by: Per Dalen <per.dalen@appeartv.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
* hwmon: (adm1021) Clarify documentation regarding Xeon processorsJean Delvare2011-04-291-2/+1
| | | | | | | | | | | Recent Xeon processor thermal sensors are supported by the coretemp driver and not the adm1021 driver. Only one old generation of Xeon processors (the first Netburst ones) are supported by the adm1021 driver. Reported-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
* hwmon: (lm90) Add support for ADT7461A and NCT1008Guenter Roeck2011-04-291-4/+4
| | | | | | | | | This patch adds support for ADT7461A and NCT1008 to the lm90 driver. Both chips have identical functionality and report the same manufacturing ID and device ID values. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* hwmon: (f71882fg) Add support for the F71889AHans de Goede2011-03-261-1/+1
| | | | | | Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* hwmon: (f71882fg) Add support for the F81865FJean Delvare2011-03-261-0/+1
| | | | | | | | | | Add support for the Fintek F81865F. It's essentially compatible with the F71882FG, but has fewer inputs: 7 voltage, 2 temperature and 2 fan inputs only. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
* hwmon: (f71882fg) Document all supported devicesJean Delvare2011-03-261-3/+13
| | | | | | | | | | The list of supported devices was not always well documented in all places. Clarify and list all devices in documentation, Kconfig and the driver itself. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
* hwmon: twl4030: Hwmon Driver for TWL4030 MADCKeerthy2011-03-231-0/+10
| | | | | | | | | | | | This driver exposes the sysfs nodes of the TWL4030 MADC module. All the voltage channel values are expressed in terms of mV. Channel 13 and channel 14 are reserved. There are channels which represent temperature and current the output is represented by celcius and mA respectively. Signed-off-by: Keerthy <j-keerthy@ti.com> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* hwmon: Add support for Texas Instruments ADS1015Dirk Eibach2011-03-211-0/+10
| | | | | Signed-off-by: Dirk Eibach <eibach@gdsys.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* hwmon: New driver for SMSC SCH5627Hans de Goede2011-03-211-0/+9
| | | | | | | | | | | | | | SMSC SCH5627 Super I/O chips include complete hardware monitoring capabilities. They can monitor up to 5 voltages, 4 fans and 8 temperatures. The hardware monitoring part of the SMSC SCH5627 is accessed by talking through an embedded microcontroller. An application note describing the protocol for communicating with the microcontroller is available upon request. Please mail me if you want a copy. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* hwmon: (lm75) Add detection of the National Semiconductor LM75ALen Sorensen2011-03-211-1/+1
| | | | | | | | Add support for detection of the National Semiconductor LM75A using the ID register value. Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* Move lis3lv02d drivers to drivers/miscJean Delvare2011-03-211-40/+0
| | | | | | | | | | | | | The lis3lv02d drivers aren't hardware monitoring drivers, so the don't belong to drivers/hwmon. Move them to drivers/misc, short of a better home. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Tested-by: Eric Piel <eric.piel@tremplin-utc.net> Tested-by: Takashi Iwai <tiwai@suse.de>
* Move hp_accel to drivers/platform/x86Jean Delvare2011-03-211-19/+0
| | | | | | | | | | | | | The hp_accel driver isn't a hardware monitoring driver, so it doesn't belong to drivers/hwmon. Move it to drivers/platform/x86, assuming HP doesn't ship non-x86 laptops. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Tested-by: Eric Piel <eric.piel@tremplin-utc.net> Tested-by: Takashi Iwai <tiwai@suse.de>
* Let Kconfig handle lis3lv02d dependenciesJean Delvare2011-03-211-24/+19
| | | | | | | | | | | | | | The dependencies between the various lis3lv02d drivers make it impossible to split them to different directories, while we really want to do this. Move handling of dependencies from Makefile to Kconfig, to make the move possible at all. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Tested-by: Eric Piel <eric.piel@tremplin-utc.net> Tested-by: Takashi Iwai <tiwai@suse.de>
* hwmon: (w83627ehf) Update Kconfig for W83677HG-B, NCT6775F and NCT6776FGuenter Roeck2011-03-141-2/+3
| | | | | Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Ian Dobson <i.dobson@planet-ian.com>
* hwmon: Add support for LTC4151per.dalen@appeartv.com2011-03-141-0/+11
| | | | | | | | LTC4151 is High Voltage I2C Current and Voltage Monitor from Linear Technology. Signed-off-by: Per Dalen <per.dalen@appeartv.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
* hwmon: (pmbus) Add support for Maxim MAX34440/MAX34441Guenter Roeck2011-03-141-0/+10
| | | | | Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
* hwmon: (pmbus) Add support for Maxim MAX16064Guenter Roeck2011-03-141-0/+10
| | | | | Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
* hwmon: (pmbus) Add support for Maxim MAX8688Guenter Roeck2011-03-141-0/+10
| | | | | Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk>