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path: root/drivers/hwmon
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2014-12-08hwmon: (tmp401) Detect TMP435 on all addresses it supportsGuenter Roeck
TMP435 supports a range of I2C addresses, not just 0x4c. Cc: Patrick Titiano <ptitiano@baylibre.com> Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-12-05hwmon: (lm75) Strengthen detect functionGuenter Roeck
A chip returning 0x00 in all registers is erroneously detected as LM75. Check hysteresis and temperature limit registers and abort if both are 0 to reduce the likelyhood for this to happen. Reviewed-by: Rob Coulson <rob.coulson@gmail.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-12-04hwmon: (gpio-fan) Add a shutdown handler to poweroff the fansNishanth Menon
Poweroff the fans when shutting down the system. Else, echo '1' > /sys/class/hwmon/hwmon0/fan1_target; poweroff leaves the fan running if the System power off does not drive the gpio expander which might control the fan power supply. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-12-04hwmon: (gpio-fan) Allow usage of gpio operations that may sleepNishanth Menon
Certain I2C based GPIO expanders could be used in sleepable context, this results in: [ 115.890569] ------------[ cut here ]------------ [ 115.895422] WARNING: CPU: 0 PID: 1115 at drivers/gpio/gpiolib.c:1370 gpiod_set_raw_value+0x40/0x4c() [ 115.905024] Modules linked in: [ 115.908229] CPU: 0 PID: 1115 Comm: sh Tainted: G W 3.18.0-rc7-next-20141203-dirty #1 [ 115.917461] Hardware name: Generic DRA74X (Flattened Device Tree) [ 115.923876] [<c0015368>] (unwind_backtrace) from [<c00119f4>] (show_stack+0x10/0x14) [ 115.932013] [<c00119f4>] (show_stack) from [<c05b78e8>] (dump_stack+0x78/0x94) [ 115.939594] [<c05b78e8>] (dump_stack) from [<c003de28>] (warn_slowpath_common+0x7c/0xb4) [ 115.948094] [<c003de28>] (warn_slowpath_common) from [<c003de7c>] (warn_slowpath_null+0x1c/0x24) [ 115.957315] [<c003de7c>] (warn_slowpath_null) from [<c03461e8>] (gpiod_set_raw_value+0x40/0x4c) [ 115.966457] [<c03461e8>] (gpiod_set_raw_value) from [<c04866f4>] (set_fan_speed+0x4c/0x64) [ 115.975145] [<c04866f4>] (set_fan_speed) from [<c04868a8>] (set_rpm+0x98/0xac) [ 115.982742] [<c04868a8>] (set_rpm) from [<c039fb4c>] (dev_attr_store+0x18/0x24) [ 115.990426] [<c039fb4c>] (dev_attr_store) from [<c01b0a28>] (sysfs_kf_write+0x4c/0x50) [ 115.998742] [<c01b0a28>] (sysfs_kf_write) from [<c01afe1c>] (kernfs_fop_write+0xbc/0x19c) [ 116.007333] [<c01afe1c>] (kernfs_fop_write) from [<c0148cc4>] (vfs_write+0xb0/0x1a0) [ 116.015461] [<c0148cc4>] (vfs_write) from [<c0148fbc>] (SyS_write+0x44/0x84) [ 116.022881] [<c0148fbc>] (SyS_write) from [<c000e5c0>] (ret_fast_syscall+0x0/0x48) [ 116.030833] ---[ end trace 3a0b636123acab82 ]--- So, switch over to sleepable GPIO operations as there is no mandatory need for non-sleepable gpio operations in the fan driver. This allows the fan driver to be used with i2c based gpio expanders such as palmas_gpio. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-12-04hwmon: (tmp401) Bail out from tmp401_probe() in case of write errorsBartosz Golaszewski
The return value of i2c_smbus_read_byte_data() is checked in tmp401_init_client(), but only a warning is printed and the device is registered anyway. This leads to devices being registered even if they cannot be physically detected. Bail out from probe in case of write errors and notify the user. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-12-04hwmon: (tmp401) Add support for TI TMP435Patrick Titiano
Signed-off-by: Patrick Titiano <ptitiano@baylibre.com> [Bartosz Golaszewski: prepared for submission, code review fixes] Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> [Guenter Roeck: Merged two patches into one] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-12-02hwmon: (lm95234) Add support for LM95233Guenter Roeck
LM95233 is similar to LM95234, but it only supports two instead of four external temperature sensors. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-12-02hwmon: (lm95245) Add support for LM95235Guenter Roeck
LM95235 is register compatible to LM95245. Also update link to LM95245 data sheet, and drop the link to the datasheet from the driver source to simplify code maintenance. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-30hwmon: (ina2xx) bail-out from ina2xx_probe() in case of configuration errorsBartosz Golaszewski
The return value of i2c_smbus_write_word_swapped() isn't checked in ina2xx_probe(). This leads to devices being registered even if they cannot be physically detected (e.g. device is not powered-up at boot-time). Even after restoring power to such device, it is left unconfigured as the configuration has never been actually written to the register. Error out in case of write errors in probe and notify the user. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> [Guenter Roeck: Fixed multi-line comment style] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-30hwmon: (nct6775) Add blank lines after declarationsGuenter Roeck
checkpatch complains about WARNING: Missing a blank line after declarations Add missing blank lines. Also reorder variables length-wise where appropriate if a function header is touched anyway. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-30hwmon: (nct6775) Add support for NCT6792DGuenter Roeck
NCT6792D is similar to NCT6791D. Only beep control and temperature monitoring registers are different. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-30hwmon: (lm75) Add support for the NXP LM75BMichael Thalmeier
It is basically a faster lm75 with improved (11 bit) resolution. Signed-off-by: Michael Thalmeier <michael.thalmeier@hale.at> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-30hwmon: Driver for Nuvoton NCT7802YGuenter Roeck
NCT7802Y is an I2C based hardware monitoring chip from Nuvoton. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-30hwmon: (ibmpowernv) Convert to module_platform_driverAxel Lin
Use module_platform_driver to simplify the code a bit. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-30hwmon: (ibmpowernv) Use platform 'id_table' to probe the deviceNeelesh Gupta
The current driver probe() function assumes the sensor device to be always present and gets executed every time if the driver is loaded, but the appropriate hardware could not be present. So, move the platform device creation as part of platform init code and use the 'id_table' to check if the device is present or not. Signed-off-by: Neelesh Gupta <neelegup@linux.vnet.ibm.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-30hwmon: (iio_hwmon) Add support for humidity sensorsGuenter Roeck
The iio subsystem supports humidity sensors, so it makes sense to support it in the iio-hwmon bridge as well. Cc: Jonathan Cameron <jic23@kernel.org> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-30hwmon: (ltc2978) Add regulator supportAlan Tull
Add simple on/off regulator support for ltc2978 and other pmbus parts supported by the ltc2978 driver. Signed-off-by: Alan Tull <atull@opensource.altera.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-30hwmon: (pmbus) Add regulator supportAlan Tull
Add support for simple on/off control of each channel. To add regulator support, the pmbus part driver needs to add regulator_desc information and number of regulators to its pmbus_driver_info struct. regulator_desc can be declared using default macro for a regulator (PMBUS_REGULATOR) that is in pmbus.h The regulator_init_data can be initialized from either platform data or the device tree. Signed-off-by: Alan Tull <atull@opensource.altera.com> Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-30hwmon: (pmbus) add helpers for byte write and read modify writeAlan Tull
Add two helper functions: * pmbus_write_byte_data = paged byte write * pmbus_update_byte_data = paged byte read/modify/write Signed-off-by: Alan Tull <atull@opensource.altera.com> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-19hwmon: (g762) fix call to devm_hwmon_device_register_with_groups()Arnaud Ebalard
g762_remove() needs to first call hwmon_device_unregister() and then g762_of_clock_disable(). For that reason, it is not possible to convert it to devm_hwmon_device_register_with_groups() and the the non device managed version must be used. This is correctly stated in commit message for 398e16db6262 ("hwmon: (g762) Convert to hwmon_device_register_with_groups") but the associated changes do in fact introduce a call to the device managed version of the function. This patch fixes that typo by switching to the non devm_ version. Fixes: 398e16db6262 ("hwmon: (g762) Convert to hwmon_device_register_with_groups") Cc: stable@vger.kernel.org (3.17+) Signed-off-by: Arnaud Ebalard <arno@natisbad.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-11hwmon: (fam15h_power) Fix NB device ID for F16h M30hAravind Gopalakrishnan
F3 device ID is wrongly included in fam15h_power_id_table for F16h M30h. It should be F4 device ID. Fix this. Signed-off-by: Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-11hwmon: (pwm-fan) Fix suspend/resume behaviorKamil Debski
The state of a PWM output is not clearly defined after resume. Some PWM drivers do not restore the duty cycle upon resume, thus it is necessary to manually restore the correct value. Signed-off-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-11hwmon: (ibmpowernv) Quieten when probing finds no deviceMichael Ellerman
Because we build kernels with drivers built in for many platforms, it's normal for the ibmpowernv driver to be loaded on systems that don't have the appropriate hardware. Currently the driver spams the log with: ibmpowernv ibmpowernv.0: Opal node 'sensors' not found ibmpowernv: Platfrom driver probe failed But there is no error, this machine is not a powernv and doesn't have the hardware. So change the sensors message to dev_dbg(), and only print an error about the probe failing if it's not ENODEV. Also fix the spelling of "Platfrom" and print the actual error value. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-10-19hwmon: (menf21bmc) Include linux/err.hJohannes Thumshirn
Include linux/err.h to get the definitions for IS_ERR() PTR_ERR() and ERR_PTR() used in the driver. This fixes compilation on powerpc targets. Signed-off-by: Johannes Thumshirn <johannes.thumshirn@men.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-10-03hwmon: (ab8500) Call kernel_power_off instead of pm_power_offGuenter Roeck
Drivers should not call pm_power_off directly; it is not guaranteed to be non-NULL. Call kernel_power_off instead. Cc: Jean Delvare <jdelvare@suse.de> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-09-24Merge tag 'mfd-hwmon-leds-watchdog-v3.18' into hwmon-nextGuenter Roeck
Immutable branch between MFD, HWMON, LEDs and Watchdog for v3.18
2014-09-24hwmon: (menf21bmc) Introduce MEN14F021P00 BMC HWMON driverAndreas Werner
Added driver to support the 14F021P00 BMC Hardware Monitoring. The BMC is a Board Management Controller including monitoring of the board voltages. Signed-off-by: Andreas Werner <andreas.werner@men.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-22hwmon: (ntc_thermistor) Add ntc thermistor to thermal subsystem as a sensor.Jonghwa Lee
To get more comprehensive and integrated thermal management, it adds ntc thermistor to thermal framework as a thermal sensor. It's governed thermal susbsystem only if it is described in DT node. Otherwise, it just notifies temperature to userspace via sysfs as it used to be. Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-09-22hwmon: (smsc47b397) Convert to devm_hwmon_device_register_with_groupsAxel Lin
Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to simplify the code a bit. Signed-off-by: Axel Lin <axel.lin@ingics.com> Tested-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-09-22hwmon: (k10temp) Convert to devm_hwmon_device_register_with_groupsGuenter Roeck
Use devm_hwmon_device_register_with_groups() to simplify the code and reduce code size. Cc: Clemens Ladisch <clemens@ladisch.de> Tested-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-09-22hwmon: (k10temp) Add support for F15h M60hAravind Gopalakrishnan
This patch adds temperature monitoring support for F15h M60h processor. - Add new pci device id for the relevant processor - The functionality of REG_REPORTED_TEMPERATURE is moved to D0F0xBC_xD820_0CA4 [Reported Temperature Control] - So, use this to get CUR_TEMP value - Since we need an indirect register access, protect this with a mutex lock - Add Kconfig, Doc entries to indicate support for this processor. Signed-off-by: Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com> Acked-by: Borislav Petkov <bp@suse.de> Acked-by: Clemens Ladisch <clemens@ladisch.de> [Guenter Roeck: Declare new mutex and function static] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-09-22hwmon: (da9052) Convert to devm_hwmon_device_register_with_groupsAxel Lin
Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to simplify the code a bit. Signed-off-by: Axel Lin <axel.lin@ingics.com> Tested-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-09-22hwmon: (da9055) Convert to devm_hwmon_device_register_with_groupsAxel Lin
Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to simplify the code a bit. Signed-off-by: Axel Lin <axel.lin@ingics.com> Tested-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-09-22hwmon: (ads1015) Use of_property_read_u32 at appropriate placesAxel Lin
Simplify the code a bit and also improve readability. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-09-22hwmon: (tmp103) Fix resource leak bug in tmp103 temperature sensor driversundarjdev
tmp103 temperature sensor driver registers with the hwmon framework by calling hwmon_device_register_with_groups but does not have a .remove method to call hwmon_device_unregister to unregister from the framework when the device is no longer needed. Fix this by calling devm_hwmon_device_register_with_groups. Signed-off-by: Sundar J Dev <sundarjayakumardev@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-09-16hwmon: (fam15h_power) Add support for two more processorsAravind Gopalakrishnan
Fam16h,M30h(Mullins) and Fam15hM30h(Kaveri) processors can report 'power_crit' value. So, adding their respective device ids. Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-09-16hwmon: (fam15h_power) Make actual power reporting conditionalAravind Gopalakrishnan
power1_input should only be reported for Fam15h, Models 00h-0fh So, introduce a is_visible function to take care of this. As suggested by Guenter here: http://marc.info/?l=linux-kernel&m=141038145616437&w=2 Suggested-by: Guenter Roeck <linux@roeck-us.net> Fixes: 22e32f4f5777 ('x86,AMD: Power driver support for AMD's family 16h processors') Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-28hwmon: (ds1621) Update zbits after conversion rate changeRobert Coulson
After the conversion rate is changed, the zbits are not updated, but should be, since they are used later in the set_temp function. Fixes: a50d9a4d9ad3 ("hwmon: (ds1621) Fix temperature rounding operations") Reported-by: Murat Ilsever <murat.ilsever@gmail.com> Signed-off-by: Robert Coulson <rob.coulson@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-14Merge tag 'hwmon-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon fixes from Guenter Roeck: "Several bug fixes in various drivers, plus a minor cleanup in the tmp103 driver" * tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (tmp103) Remove duplicate test for I2C_FUNC_SMBUS_BYTE_DATA functionality hwmon: (w83793) Fix vrm write operation hwmon: (w83791d) Fix vrm write operation hwmon: (w83627hf) Fix vrm write operation hwmon: (vt1211) Fix vrm write operation hwmon: (pc87360) Fix vrm write operation hwmon: (lm87) Fix vrm write operation hwmon: (asb100) Fix vrm write operation hwmon: (adm1026) Fix vrm write operation hwmon: (adm1025) Fix vrm write operation hwmon: (hih6130) Fix missing hih6130->write_length setting hwmon: (dme1737) Prevent overflow problem when writing large limits hwmon: (emc6w201) Fix temperature limit range hwmon: (ads1015) Fix out-of-bounds array access hwmon: (lm92) Prevent overflow problem when writing large limits
2014-08-10hwmon: (tmp103) Remove duplicate test for I2C_FUNC_SMBUS_BYTE_DATA functionalityAxel Lin
Since commit b42261078a91 ("regmap: i2c: fallback to SMBus if the adapter does not support standard I2C"), regmap-i2c will check the I2C_FUNC_SMBUS_[BYTE|WORD]_DATA functionality based on the regmap_config setting if the adapter does not support standard I2C. So remove the I2C_FUNC_SMBUS_BYTE_DATA functionality check in the driver code. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-06fs.h, drivers/hwmon/asus_atk0110.c: fix DEFINE_SIMPLE_ATTRIBUTE semicolon ↵Joe Perches
definition and use The DEFINE_SIMPLE_ATTRIBUTE macro should not end in a ; Fix the one use in the kernel tree that did not have a semicolon. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Luca Tettamanti <kronos.it@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-05hwmon: (w83793) Fix vrm write operationAxel Lin
vrm is an u8, so the written value needs to be limited to [0, 255]. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-05hwmon: (w83791d) Fix vrm write operationAxel Lin
vrm is an u8, so the written value needs to be limited to [0, 255]. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-05hwmon: (w83627hf) Fix vrm write operationAxel Lin
vrm is an u8, so the written value needs to be limited to [0, 255]. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-05hwmon: (vt1211) Fix vrm write operationAxel Lin
vrm is an u8, so the written value needs to be limited to [0, 255]. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-05hwmon: (pc87360) Fix vrm write operationAxel Lin
vrm is an u8, so the written value needs to be limited to [0, 255]. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-05hwmon: (lm87) Fix vrm write operationAxel Lin
vrm is an u8, so the written value needs to be limited to [0, 255]. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-05hwmon: (asb100) Fix vrm write operationAxel Lin
vrm is an u8, so the written value needs to be limited to [0, 255]. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-05hwmon: (adm1026) Fix vrm write operationAxel Lin
vrm is an u8, so the written value needs to be limited to [0, 255]. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-05hwmon: (adm1025) Fix vrm write operationAxel Lin
vrm is an u8, so the written value needs to be limited to [0, 255]. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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