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* hwmon: (gl520sm) Fix overflows and crash seen when writing into limit attributesGuenter Roeck2017-10-081-9/+16
| | | | | | | | | | | | | [ Upstream commit 87cdfa9d60f4f40e6d71b04b10b36d9df3c89282 ] Writes into limit attributes can overflow due to multplications and additions with unbound input values. Writing into fan limit attributes can result in a crash with a division by zero if very large values are written and the fan divider is larger than 1. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* hwmon: (it87) Fix pwm4 detection for IT8620 and IT8628Guenter Roeck2017-05-141-1/+1
| | | | | | | | | | | | | commit d66777caa57ffade6061782f3a4d4056f0b0c1ac upstream. pwm4 is enabled if bit 2 of GPIO control register 4 is disabled, not when it is enabled. Since the check is for the skip condition, it is reversed. This applies to both IT8620 and IT8628. Fixes: 36c4d98a7883d ("hwmon: (it87) Add support for all pwm channels ...") Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* hwmon: (it87) Avoid registering the same chip on both SIO addressesGuenter Roeck2017-05-081-5/+19
| | | | | | | | | | | | | | commit 8358378b22518d92424597503d3c1cd302a490b6 upstream. IT8705F is known to respond on both SIO addresses. Registering it twice may result in system lockups. Reported-by: Russell King <linux@armlinux.org.uk> Fixes: e84bd9535e2b ("hwmon: (it87) Add support for second Super-IO chip") Signed-off-by: Guenter Roeck <linux@roeck-us.net> Cc: Jean Delvare <jdelvare@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* hwmon: (it87) Ensure that pwm control cache is current before updating valuesGuenter Roeck2017-03-121-0/+2
| | | | | | | | | | | | | commit 82dbe987b70042b340f851bdc969a971081e5f02 upstream. If sensor attributes were never read, the pwm control data has not been initiialized, which can cause wrong driver behavior. Ensure that cached data is current before acting on it. Reported-by: Kevin Folz <kfolz@evertz.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* hwmon: (it87) Do not overwrite bit 2..6 of pwm control registersGuenter Roeck2017-03-121-13/+24
| | | | | | | | | | | | | | | | | commit 4c7b8ca1ae5ed9e27014732c8a918ba11a86cf09 upstream. In IT8620E, after setting pwm control to manual, it was observed that pwm values for fan 4..6 have reversed results (writing 0 results in fans running at full speed, writing 255 results in fans turned off). With the new PWM control, pwm polarity for pwm control 4..6 is specified in its pwm control registers. Those registers are overwritten when setting the pwm mode or the temperature mapping. Do not touch bit 2..6 of pwm control registers on register writes to fix the problem. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* hwmon: (lm90) fix temp1_max_alarm attributeMichael Walle2017-01-121-1/+1
| | | | | | | | | | | | | | commit e9572fdd13e299cfba03abbfd2786c84ac055249 upstream. Since commit commit eb1c8f4325d5 ("hwmon: (lm90) Convert to use new hwmon registration API") the temp1_max_alarm and temp1_crit_alarm attributes are mapped to the same alarm bit. Fix the typo. Fixes: eb1c8f4325d5 ("hwmon: (lm90) Convert to use new hwmon registration API") Signed-off-by: Micehael Walle <michael@walle.cc> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* hwmon: (g762) Fix overflows and crash seen when writing limit attributesGuenter Roeck2017-01-121-4/+7
| | | | | | | | | | | | | | | | commit 4fccd4a1e8944033bcd7693ea4e8fb478cd2059a upstream. Fix overflows seen when writing into fan speed limit attributes. Also fix crash due to division by zero, seen when certain very large values (such as 2147483648, or 0x80000000) are written into fan speed limit attributes. Fixes: 594fbe713bf60 ("Add support for GMT G762/G763 PWM fan controllers") Cc: Arnaud Ebalard <arno@natisbad.org> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* hwmon: (nct7802) Fix overflows seen when writing into limit attributesGuenter Roeck2017-01-121-3/+5
| | | | | | | | | | | | | | | | | | | | | | | commit c0d04e9112ad59d73f23f3b0f6726c5e798dfcbf upstream. Fix overflows seen when writing voltage and temperature limit attributes. The value passed to DIV_ROUND_CLOSEST() needs to be clamped, and the value parameter passed to nct7802_write_fan_min() is an unsigned long. Also, writing values larger than 2700000 into a fan limit attribute results in writing 0 into the chip's limit registers. The exact behavior when writing this value is unspecified. For consistency, report a limit of 1350000 if the chip register reads 0. This may be wrong, and the chip behavior should be verified with the actual chip, but it is better than reporting a value of 0 (which, when written, results in writing a value of 0x1fff into the chip register). Fixes: 3434f3783580 ("hwmon: Driver for Nuvoton NCT7802Y") Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* hwmon: (ds620) Fix overflows seen when writing temperature limitsGuenter Roeck2017-01-121-1/+1
| | | | | | | | | | | | | | | | | | commit e36ce99ee0815d7919a7b589bfb66f3de50b6bc7 upstream. Module test reports: temp1_max: Suspected overflow: [160000 vs. 0] temp1_min: Suspected overflow: [160000 vs. 0] This is seen because the values passed when writing temperature limits are unbound. Reviewed-by: Jean Delvare <jdelvare@suse.de> Fixes: 6099469805c2 ("hwmon: Support for Dallas Semiconductor DS620") Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* hwmon: (amc6821) sign extension temperatureJared Bents2017-01-121-2/+2
| | | | | | | | | | | | | | | | commit 4538bfbf2d9f1fc48c07ac0cc0ee58716fe7fe96 upstream. Converts the unsigned temperature values from the i2c read to be sign extended as defined in the datasheet so that negative temperatures are properly read. Fixes: 28e6274d8fa67 ("hwmon: (amc6821) Avoid forward declaration") Signed-off-by: Jared Bents <jared.bents@rockwellcollins.com> Signed-off-by: Matt Weber <matthew.weber@rockwellcollins.com> [groeck: Dropped unnecessary continuation line] Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* hwmon: (scpi) Fix module autoloadJavier Martinez Canillas2017-01-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | commit 13edb767aa609b6efb7c0c2b57fbd72a6ded0eed upstream. If the driver is built as a module, autoload won't work because the module alias information is not filled. So user-space can't match the registered device with the corresponding module. Export the module alias information using the MODULE_DEVICE_TABLE() macro. Before this patch: $ modinfo drivers/hwmon/scpi-hwmon.ko | grep alias $ After this patch: $ modinfo drivers/hwmon/scpi-hwmon.ko | grep alias alias: of:N*T*Carm,scpi-sensorsC* alias: of:N*T*Carm,scpi-sensors Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Fixes: ea98b29a05e9c ("hwmon: Support sensors exported via ARM SCP interface") Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* hwmon: (core) fix resource leak on devm_kcalloc failureColin Ian King2016-10-241-2/+4
| | | | | | | | | | If dev_kcalloc fails to allocate hw_dev->groups then the current exit path is a direct return, causing a leak of resources such as hwdev and ida is not removed. Fix this by exiting via the free_hwmon exit path that performs the necessary resource cleanup. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (max31790) potential ERR_PTR dereferenceDan Carpenter2016-10-171-1/+3
| | | | | | | | | We should only dereference "data" after we check if it is an error pointer. Fixes: 54187ff9d766 ('hwmon: (max31790) Convert to use new hwmon registration API') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adm9240) handle temperature readings below 0Chris Packham2016-10-171-3/+3
| | | | | | | | | | | | Unlike the temperature thresholds the temperature data is a 9-bit signed value. This allows and additional 0.5 degrees of precision on the reading but makes handling negative values slightly harder. In order to have sign-extension applied correctly the 9-bit value is stored in the upper bits of a signed 16-bit value. When presenting this in sysfs the value is shifted and scaled appropriately. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* Merge tag 'hwmon-for-linus-v4.9' of ↵Linus Torvalds2016-10-0428-2152/+3945
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon updates from Guenter Roeck: - New hwmon registration API, including ports of several drivers to the new API - New hwmon driver for APM X-Gene SoC - Added support for UCD90160, DPS-460, DPS-800, and SGD009 PMBUs chips - Various cleanups, minor improvements, and fixes in several drivers * tag 'hwmon-for-linus-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (54 commits) hwmon: (nct6775) Add support for multiple virtual temperature sources hwmon: (adt7470) No need for additional synchronization on kthread_stop() hwmon: (lm95241) Update module description to include LM95231 hwmon: (lm95245) Select REGMAP_I2C hwmon: (ibmpowernv) Fix label for cores numbers not threads hwmon: (adt7470) Allow faster removal hwmon: (adt7470) Add write support to alarm_mask hwmon: (xgene) access mailbox as RAM hwmon: (lm95245) Use new hwmon registration API hwmon: (lm95241) Convert to use new hwmon registration API hwmon: (jc42) Convert to use new hwmon registration API hwmon: (max31790) Convert to use new hwmon registration API hwmon: (nct7904) Convert to use new hwmon registration API hwmon: (ltc4245) Convert to use new hwmon registration API hwmon: (tmp421) Convert to use new hwmon registration API hwmon: (tmp102) Convert to use new hwmon registration API hwmon: (lm90) Convert to use new hwmon registration API hwmon: (lm75) Convert to use new hwmon registration API hwmon: (xgene) Fix crash when alarm occurs before driver probe hwmon: (iio_hwmon) defer probe when no channel is found ...
| * hwmon: (nct6775) Add support for multiple virtual temperature sourcesGuenter Roeck2016-09-181-2/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For virtual temperatures, the actual temperature values are written by software, presumably by the BIOS. This functionality is (as of right now) supported on NCT6791D, NCT6792D, and NCT6793D. On those chips, the temperatures are written into registers 0xea..0xef on page 0. This is known to be used on some Asus motherboards, where the actual temperature source can be configured in the BIOS. Report the 'virtual' temperatures for all monotoring sources to address this situation. Example for the resulting output (as seen with the 'sensors' command): nct6791-isa-0290 Adapter: ISA adapter ... Virtual_TEMP: +31.0°C PECI Agent 0: +38.5°C Virtual_TEMP: +32.0°C ... Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (adt7470) No need for additional synchronization on kthread_stop()Daniel Wagner2016-09-181-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The kthread_stop() waits for the thread to exit. There is no need for an additional synchronization needed to join on the kthread. The completion was added by 89fac11cb3e7 ("adt7470: make automatic fan control really work"). Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de> Cc: Darrick J. Wong <djwong@us.ibm.com> Cc: Jean Delvare <jdelvare@suse.com> Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (lm95241) Update module description to include LM95231Axel Lin2016-09-131-1/+1
| | | | | | | | | | | | | | This driver also supports LM95231. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (lm95245) Select REGMAP_I2CAxel Lin2016-09-131-0/+1
| | | | | | | | | | | | | | This driver now uses regmap APIs, so it needs to select REGMAP_I2C. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (ibmpowernv) Fix label for cores numbers not threadsMichael Neuling2016-09-131-5/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the label says "Core" but lists the thread numbers. This ends up looking like this: # cat /sys/class/hwmon/hwmon0/temp[1-4]_label Core 0-7 Core 8-15 Core 16-23 Core 24-31 This is misleading as it looks like it's cores 0-7 when it's actually threads 0-7. This changes the print to just give the core number, so the output now looks like this: # cat /sys/class/hwmon/hwmon0/temp[1-4]_label Core 0 Core 8 Core 16 Core 24 Signed-off-by: Michael Neuling <mikey@neuling.org> Acked-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (adt7470) Allow faster removalJoshua Scott2016-09-101-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | adt7470_remove will wait for the update thread to complete before returning. This had a worst-case time of up to the user-configurable auto_update_interval. Replace msleep_interruptible with set_current_state and schedule_timeout so that kthread_stop will interrupt the sleep. Signed-off-by: Joshua Scott <joshua.scott@alliedtelesis.co.nz> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (adt7470) Add write support to alarm_maskJoshua Scott2016-09-101-1/+24
| | | | | | | | | | | | | | | | | | Add write support for the alarm_mask. A base of 0 is provided so that either hex or decimal can be used. The hex format when reading alarm_mask is unchanged. Signed-off-by: Joshua Scott <joshua.scott@alliedtelesis.co.nz> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (xgene) access mailbox as RAMArnd Bergmann2016-09-091-14/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The newly added hwmon driver fails to build in an allmodconfig kernel: ERROR: "memblock_is_memory" [drivers/hwmon/xgene-hwmon.ko] undefined! According to comments in the code, the mailbox is a shared memory region, not a set of MMIO registers, so we should use memremap() for mapping it instead of ioremap or acpi_os_ioremap, and pointer dereferences instead of readl/writel. The driver already uses plain kernel pointers, so it's a bit unusual to work with functions that operate on __iomem pointers, and this fixes that part too. I'm using READ_ONCE/WRITE_ONCE here to keep the existing behavior regarding the ordering of the accesses from the CPU, but note that there are no barriers (also unchanged from before). I'm also keeping the endianness behavior, though I'm unsure whether the message data was supposed to be in LE32 format in the first place, it's possible this was meant to be interpreted as a byte stream instead. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Hoan Tran <hotran@apm.com> Tested-by: Hoan Tran <hotran@apm.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (lm95245) Use new hwmon registration APIGuenter Roeck2016-09-081-259/+379
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Simplify code and reduce code size by using the new hwmon registration API. Other changes: - Convert to use regmap, and drop local caching. This avoids reading registers unnecessarily, and uses regmap for caching of non-volatile registers. - Add support for temp2_max, temp2_max_alarm, temp2_max_hyst, and temp2_offset. - Order include files alphabetically - Drop FSF address - Check errors from register read and write functions and report to userspace. - Accept negative hysteresis values. While unlikely, a maximum limit _can_ be set to a value smaller than 31 degrees C, which makes negative hysteresis values possible. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (lm95241) Convert to use new hwmon registration APIGuenter Roeck2016-09-081-189/+241
| | | | | | | | | | | | | | Simplify code and reduce code size by using the new hwmon registration API. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (jc42) Convert to use new hwmon registration APIGuenter Roeck2016-09-081-144/+149
| | | | | | | | | | | | | | Simplify code and reduce code size by using the new hwmon registration API. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (max31790) Convert to use new hwmon registration APIGuenter Roeck2016-09-081-297/+224
| | | | | | | | | | | | | | Simplify code and reduce code size by using the new hwmon registration API. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (nct7904) Convert to use new hwmon registration APIGuenter Roeck2016-09-081-285/+270
| | | | | | | | | | | | | | Simplify code and reduce code size by using the new hwmon registration API. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (ltc4245) Convert to use new hwmon registration APIGuenter Roeck2016-09-081-187/+175
| | | | | | | | | | | | | | Simplify code and reduce code size by using the new hwmon registration API. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (tmp421) Convert to use new hwmon registration APIGuenter Roeck2016-09-081-75/+58
| | | | | | | | | | | | | | Simplify code and reduce code size by using the new hwmon registration API. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (tmp102) Convert to use new hwmon registration APIGuenter Roeck2016-09-082-65/+90
| | | | | | | | | | | | | | Simplify code and reduce code size by using the new hwmon registration API. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (lm90) Convert to use new hwmon registration APIGuenter Roeck2016-09-081-376/+435
| | | | | | | | | | | | | | Reduce driver complexity and size by converting it to the new hwmon API. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (lm75) Convert to use new hwmon registration APIGuenter Roeck2016-09-082-70/+116
| | | | | | | | | | | | | | Simplify code and reduce code size by using the new hwmon registration API. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (xgene) Fix crash when alarm occurs before driver probehotran2016-09-081-19/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The system crashes during probing xgene-hwmon driver when temperature alarm interrupt occurs before. It's because - xgene_hwmon_probe() requests mailbox channel which also enables the mailbox interrupt. - As temperature alarm interrupt is pending, ISR runs and crashes when accesses into invalid resourse as unmapped PCC shared memory. This patch fixes this issue by saving this alarm message and scheduling a bottom handler after xgene_hwmon_probe() finish. Signed-off-by: Hoan Tran <hotran@apm.com> Reported-by: Itaru Kitayama <itaru.kitayama@riken.jp> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (iio_hwmon) defer probe when no channel is foundQuentin Schulz2016-09-081-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | iio_channel_get_all returns -ENODEV when it cannot find either phandles and properties in the Device Tree or channels whose consumer_dev_name matches iio_hwmon in iio_map_list. The iio_map_list is filled in by iio drivers which might be probed after iio_hwmon. It is better to defer the probe of iio_hwmon if such error is returned by iio_channel_get_all in order to let a chance to iio drivers to expose channels in iio_map_list. Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (max6650) Allow fan shutdown and initial rpm targetMike Looijmans2016-09-081-41/+67
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The fan can be stopped by writing "3" to pwm1_enable in sysfs. Add devicetree property for early initialization of the fan controller to prevent overheating, for example when resetting the board while the fan was completely turned off. Also improve error reporting, I2C failures were ignored while writing new values. Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (max6650) Add devicetree supportMike Looijmans2016-09-081-11/+36
| | | | | | | | | | | | | | | | | | Parse devicetree parameters for voltage and prescaler setting. This allows using multiple max6550 devices with varying settings, and also makes it possible to instantiate and configure the device using devicetree. Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (it87) Drop useless commentsJean Delvare2016-09-081-4/+4
| | | | | | | | | | | | | | | | | | | | | | Remove the index comments at the end of it87_attributes_in. They serve no purpose (as there is no reference to them in it87_in_is_visible) and some of them were obviously wrong. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (ucd9000) Add support for UCD90160 Power Supply SequencerMatt Weber2016-09-082-4/+5
| | | | | | | | | | | | | | | | | | | | The UCD90160 Power Supply Sequencer reuses the existing register layout, so just an id addition was required. Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com> Signed-off-by: Ronak Desai <ronak.desai@rockwellcollins.com> [groeck: Updated description, ordered alphabetically, added documentation] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (scpi) Delete unnecessary assignment for the field "owner"Markus Elfring2016-09-081-1/+0
| | | | | | | | | | | | | | | | | | | | | | The field "owner" is set by the core. Thus delete an unneeded initialisation. Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (ftsteutates) Add i2c detect functionalityThilo Cestonaro2016-09-081-0/+45
| | | | | | | | | | Signed-off-by: Thilo Cestonaro <thilo@cestona.ro> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: Add xgene hwmon driverhotran2016-09-083-0/+763
| | | | | | | | | | | | | | | | | | This patch adds hardware temperature and power reading support for APM X-Gene SoC using the mailbox communication interface. Signed-off-by: Hoan Tran <hotran@apm.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (core) Avoid cyclic dependency between hwmon and thermal_sysGuenter Roeck2016-09-081-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | If both hwmon and thermal_sys are built as modules, and CONFIG_THERMAL_HWMON is enabled, the following cyclic module dependency is reported. depmod: ERROR: Found 2 modules in dependency cycles! depmod: ERROR: Cycle detected: hwmon -> thermal_sys -> hwmon Fixes: e4bce763adb2 ("hwmon: (core) New hwmon registration API") Reported-by: Vignesh R <vigneshr@ti.com> Cc: Keerthy J <j-keerthy@ti.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (adt7470) Expose PWM frequency to sysfsJoshua Scott2016-09-081-0/+74
| | | | | | | | | | | | | | | | The ADT7470 supports a variety of PWM frequencies. This patch allows the frequency to be configured and viewed through the sysfs entry pwm1_freq. Signed-off-by: Joshua Scott <joshua.scott@alliedtelesis.co.nz> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (ltc4151) Make shunt-resistor configurableDaniel Golle2016-09-081-2/+20
| | | | | | | | | | | | | | | | | | | | Allow to specify the resistance of the attached shunt via DT by adding the shunt-resistor property. Fall-back to the previous default (1 mOhm) if unset. Signed-off-by: Daniel Golle <daniel@makrotopia.org> [groeck: Fixed 'line over 80 columns' checkpatch warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (nct6775) Do not accept force_id unless chip is foundGuenter Roeck2016-09-081-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 698a7c24a544 ("hwmon: (nct6775) Support two SuperIO chips in the same system"), the driver supports two Super-IO chips. This has the undesirable side effect that force_id always detects a second chip at address 0xfff8, even if no chip exists at that address. nct6775: Found NCT6793D or compatible chip at 0x4e:0xfff8 If no chip at all is found at a given SIO address, it does not make sense to instantiate it. Limit force_id to only work if some chip is found, that is if the chip ID returns a value other than 0xffff. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (core) Add basic pwm attribute support to new APIGuenter Roeck2016-09-081-0/+9
| | | | | | | | | | | | | | Add basic pwm attribute support (no auto attributes) to new API. Reviewed-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (core) Add fan attribute support to new APIGuenter Roeck2016-09-081-0/+16
| | | | | | | | | | | | Acked-by: Punit Agrawal <punit.agrawal@arm.com> Reviewed-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (core) Add energy and humidity attribute support to new APIGuenter Roeck2016-09-081-0/+20
| | | | | | | | | | | | Acked-by: Punit Agrawal <punit.agrawal@arm.com> Reviewed-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * hwmon: (core) Add power attribute support to new APIGuenter Roeck2016-09-081-0/+30
| | | | | | | | | | | | Acked-by: Punit Agrawal <punit.agrawal@arm.com> Reviewed-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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