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2022-09-20docs: hwmon: add max31760 documentationIbrahim Tilki2-0/+78
Adding documentation for max31760 fan speed controller Signed-off-by: Ibrahim Tilki <Ibrahim.Tilki@analog.com> Link: https://lore.kernel.org/r/20220910171945.48088-3-Ibrahim.Tilki@analog.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-20drivers: hwmon: Add max31760 fan speed controller driverIbrahim Tilki3-0/+609
MAX31760 is a precision fan speed controller with nonvolatile lookup table. Device has one internal and one external temperature sensor support. Controls two fans and measures their speeds. Generates hardware alerts when programmable max and critical temperatures are exceeded. Signed-off-by: Ibrahim Tilki <Ibrahim.Tilki@analog.com> Reviewed-by: Nurettin Bolucu <Nurettin.Bolucu@analog.com> Link: https://lore.kernel.org/r/20220910171945.48088-2-Ibrahim.Tilki@analog.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (mr75203) fix coding style space errorsEliav Farber1-20/+20
Fix: "ERROR: space required before the open parenthesis '('" All of the errors were introduced before this series of patches. Signed-off-by: Eliav Farber <farbere@amazon.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20220908152449.35457-22-farbere@amazon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (mr75203) add debugfs to read and write temperature coefficientsEliav Farber1-0/+62
This change adds debugfs to read and write temperature sensor coefficients - g, h, j and cal5. The coefficients can vary between product and product, so it can be very useful to be able to modify them on the fly during the calibration process. e.g.: cat /sys/kernel/debug/940f23d0000.pvt/ts_coeff_cal5 4096 echo 83000 > sys/kernel/debug/940f23d0000.pvt/ts_coeff_g Signed-off-by: Eliav Farber <farbere@amazon.com> Link: https://lore.kernel.org/r/20220908152449.35457-21-farbere@amazon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (mr75203) parse temperature coefficients from device-treeEliav Farber1-0/+9
Use thermal coefficients from the device tree if they exist. Otherwise, use default values according to the series (5 or 6). All coefficients can be used or only part of them. The coefficients shall be used for fine tuning the default values since coefficients can vary between product and product. Signed-off-by: Eliav Farber <farbere@amazon.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20220908152449.35457-20-farbere@amazon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19dt-bindings: hwmon: (mr75203) add coefficient properties for the thermal equationEliav Farber1-0/+37
Add optional temperature coefficient properties: *) moortec,ts-coeff-g *) moortec,ts-coeff-h *) moortec,ts-coeff-cal5 *) moortec,ts-coeff-j If defined they shall be used instead of defaults. The coefficients were added to device tree on top of the series property (which can be used to select between series 5 and series 6), because coefficients can vary between product and product, and code defaults might not be accurate enough. Signed-off-by: Eliav Farber <farbere@amazon.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220908152449.35457-19-farbere@amazon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (mr75203) add support for series 6 temperature equationEliav Farber1-4/+62
The current equation used in code is aligned to series 5: T = G + H * (n / cal5 - 0.5) + J * F Where: G = 60, H = 200, cal5 = 4094, J = -0.1, F = frequency clock in MHz Series 6 has a slightly different equation: T = G + H * (n / cal5 - 0.5) and a different set of coefficients: G = 57.4, H = 249.4, cal5 = 4096 This change supports equation and coefficients for both series. (for series 6, J is set to 0). The series is determined according to “moortec,ts-series” property in the device tree. If absent, series 5 is assumed to be the default. Signed-off-by: Eliav Farber <farbere@amazon.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20220908152449.35457-18-farbere@amazon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19dt-bindings: hwmon: (mr75203) add "moortec,ts-series" propertyEliav Farber1-0/+9
Add optional "moortec,ts-series" property to define the temperature equation and coefficients that shall be used to convert the digital output to value in milli-Celsius. Supported series: 5 (default) and 6. Series 5: T = G + H * (n / cal5 - 0.5) + J * F Where: G = 60, H = 200, cal5 = 4094, J = -0.1, F = frequency clock in MHz Series 6: T = G + H * (n / cal5 - 0.5) Where: G = 57.4, H = 249.4, cal5 = 4096 Signed-off-by: Eliav Farber <farbere@amazon.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220908152449.35457-17-farbere@amazon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (aspeed-pwm-tacho) Add dependency on ARCH_ASPEEDPeter Robinson1-0/+1
The SENSORS_ASPEED is part of the Aspeed silicon so it makes sense to depend on ARCH_ASPEED and for compile testing. Signed-off-by: Peter Robinson <pbrobinson@gmail.com> Link: https://lore.kernel.org/r/20220916120936.372591-1-pbrobinson@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (mr75203) modify the temperature equation according to series 5 datasheetEliav Farber1-8/+25
Modify the equation and coefficients used to convert the digital output to temperature according to series 5 of the Moortec Embedded Temperature Sensor (METS) datasheet: T = G + H * (n / cal5 - 0.5) + J * F Where: *) G = 60, H = 200, cal5 = 4094, J = -0.1. *) F = frequency clock in MHz. *) n is the digital output. In code, the G, H and J coefficients are multiplied by a factor of 1000 to get the temperature in milli-Celsius. Final result is clamped in case it exceeds min/max thresholds. Change is done since it is unclear where the current equation and coefficients came from. Signed-off-by: Eliav Farber <farbere@amazon.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20220908152449.35457-16-farbere@amazon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (mr75203) add VM pre-scaler x2 supportEliav Farber1-2/+53
Add support for mr76006 pre-scaler which provides divide-by-2 scaling of the input voltage, so that it can be presented to the VM for measurement within its range (the VM input range is limited from -0.1V to 1V). The driver reads from the device-tree all the channels that use the mr76006 pre-scaler and multiplies the voltage result by a factor of 2, to represent to the user with the actual voltage input source. Channels that are not in the device-tree are multiplied by a factor of 1. Signed-off-by: Eliav Farber <farbere@amazon.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20220908152449.35457-15-farbere@amazon.com [groeck: Addressed conflicts against commit d59eacaac953] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19dt-bindings: hwmon: (mr75203) add "moortec,vm-pre-scaler-x2" propertyEliav Farber1-0/+13
Add support for mr76006 pre-scaler which provides divide-by-2 scaling of the input voltage, so that it can be presented to the VM for measurement within its range (the VM input range is limited to -0.1V to 1V). The new "moortec,vm-pre-scaler-x2" property lists the channels that use the mr76006 pre-scaler. The driver will use this list to multiply the voltage result by 2, to present to the user with the actual voltage input source. Signed-off-by: Eliav Farber <farbere@amazon.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220908152449.35457-14-farbere@amazon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (mr75203) add VM active channel supportEliav Farber1-22/+99
Add active channel support per voltage monitor. The number of active channels is read from the device-tree. When absent in device-tree, all channels are assumed to be used. This shall be useful to expose sysfs only for inputs that are connected to a voltage source. Setting number of active channels to 0, means that entire VM sensor is not used. Signed-off-by: Eliav Farber <farbere@amazon.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20220908152449.35457-13-farbere@amazon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19dt-bindings: hwmon: (mr75203) add "moortec,vm-active-channels" propertyEliav Farber1-0/+10
Add optional "moortec,vm-active-channels" property to define the number of active channels per VM. This shall be useful to avoid exposing sysfs for reading inputs that are not connected to any voltage source. Signed-off-by: Eliav Farber <farbere@amazon.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220908152449.35457-12-farbere@amazon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19dt-bindings: vendor-prefixes: add vendor prefix for MoortecEliav Farber1-0/+2
Add device-tree vendor prefix for Moortec Semiconductor Ltd. Website: https://moortec.com/ Moortec were acquired by Synopsys so link above leads to: https://www.synopsys.com/solutions/silicon-lifecycle-management.html Signed-off-by: Eliav Farber <farbere@amazon.com> Acked-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220908152449.35457-11-farbere@amazon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (nzxt-smart2) add another USB IDAleksandr Mezin1-0/+1
No known differences from already supported devices. Signed-off-by: Aleksandr Mezin <mezin.alexander@gmail.com> Link: https://lore.kernel.org/r/20220918115506.61870-1-mezin.alexander@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (emc2305) Remove unnecessary range checkGuenter Roeck1-2/+0
Static analyzers report: drivers/hwmon/emc2305.c:194 emc2305_set_cur_state() warn: impossible condition '(val > 255) => (0-255 > 255)' 'val' is u8 and thus can never be larger than 255. In theory the operation calculating 'val' could result in a value larger than 255, but this won't happen because its parameter has already been range checked and it is guaranteed that the result never exceeds 255. Remove the unnecessary value check. Cc: Michael Shych <michaelsh@nvidia.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (mr75203) skip reset-control deassert for SOCs that don't support itEliav Farber1-4/+7
Don't fail the probe function and don't deassert the reset controller if a "reset" property doesn't exist in the device tree. Change is done for SOCs that don't support a reset controller. Signed-off-by: Eliav Farber <farbere@amazon.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20220908152449.35457-10-farbere@amazon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19dt-bindings: hwmon: (mr75203) change "resets" property to be optionalEliav Farber1-1/+0
Change "resets" property to be optional instead of required, for SOCs that don't support a reset controller. Signed-off-by: Eliav Farber <farbere@amazon.com> Acked-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220908152449.35457-9-farbere@amazon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19dt-bindings: hwmon: (mr75203) add description for Moortec's PVT controllerEliav Farber1-0/+26
This changes adds a detailed description for the mr75203 controller and for some of the analog IPs controlled by it. Signed-off-by: Eliav Farber <farbere@amazon.com> Acked-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220908152449.35457-8-farbere@amazon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (aquacomputer_d5next) Add support for Aquacomputer High Flow NextAleksa Savic3-6/+96
Extend aquacomputer_d5next driver to expose various hardware sensors of the Aquacomputer High Flow Next flow sensor, which communicates through a proprietary USB HID protocol. The High Flow Next exposes +5V voltages, water quality, conductivity and flow readings. A temperature sensor can be connected to it, in which case it provides its reading and an estimation of the dissipated/absorbed power in the liquid cooling loop. Additionally, serial number and firmware version are exposed through debugfs. Registry offsets were discovered and tested by users on Github [1] [2]. [1] https://github.com/aleksamagicka/aquacomputer_d5next-hwmon/issues/8 [2] https://github.com/aleksamagicka/aquacomputer_d5next-hwmon/pull/34 Signed-off-by: Aleksa Savic <savicaleksa83@gmail.com> Link: https://lore.kernel.org/r/20220907100739.806571-1-savicaleksa83@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (tps23861) create unique debugfs directory per deviceAlexandru Gagniuc1-3/+11
On systems with more than one tps23861, creating the debugfs directory for additional devices fails with debugfs: Directory 'tps23861' with parent '/' already present! To resolve this, include the hwmon device name in the directory name. Since the name is unique, this guarantees that the debugfs directory is unique. Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220907015405.16547-2-mr.nuke.me@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (tps23861) reduce count of i2c transactions for port_statusAlexandru Gagniuc1-55/+24
When reading the 'port_status' debugfs entry, some I2C registers were read more than once. This looks inefficient in an I2C trace. To reduce I2C traffic, update tps23861_port_status_show() to only read each register once. Indexing the port number from 0 instead of 1 also allows simplifying things a bit. Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Link: https://lore.kernel.org/r/20220907015405.16547-1-mr.nuke.me@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (emc2305) Remove unused including <linux/version.h>Jiapeng Chong1-1/+0
./drivers/hwmon/emc2305.c: 14 linux/version.h not needed. Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=2024 Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Link: https://lore.kernel.org/r/20220901022332.40248-1-jiapeng.chong@linux.alibaba.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19docs: hwmon: add emc2305.rst to docsMichael Shych2-0/+38
Add description of emc2305 driver. Signed-off-by: Michael Shych <michaelsh@nvidia.com> Reviewed-by: Vadim Pasternak <vadimp@nvidia.com> Link: https://lore.kernel.org/r/20220810171552.56417-4-michaelsh@nvidia.com [groeck: Fixed htmldocs warnings] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-19hwmon: (emc2305) add support for EMC2301/2/3/5 RPM-based PWM Fan Speed Controller.Michael Shych3-0/+638
Add driver for Microchip EMC2301/2/3/5 RPM-based PWM Fan Speed Controller. Modify Makefile and Kconfig to support Microchip EMC2305 RPM-based PWM Fan Speed Controller. Signed-off-by: Michael Shych <michaelsh@nvidia.com> Reviewed-by: Vadim Pasternak <vadimp@nvidia.com> Link: https://lore.kernel.org/r/20220810171552.56417-3-michaelsh@nvidia.com [groeck: Drop unnecessary () around DIV_ROUND_CLOSEST()] Signed-off-by: Guenter Roeck <linux@roeck-us.net>