summaryrefslogtreecommitdiffstats
path: root/drivers/hwmon (follow)
Commit message (Collapse)AuthorAgeFilesLines
* hwmon: (dell-smm) Cache fan_type() calls and change fan detectionPali Rohár2016-06-231-5/+20
| | | | | | | | | | | | | | | | | | | | On more Dell machines (e.g. Dell Precision M3800) fan_type() call is too expensive (CPU is too long in SMM mode) and cause kernel to hang. This is bug in Dell SMM or BIOS. This patch caches type for each fan (as it should not change) and changes the way how fan presense is detected. First it try function fan_status() as was before commit f989e55452c7 ("i8k: Add support for fan labels"). And if that fails fallback to fan_type(). *_status() functions can fail in case fan is not currently accessible (e.g. present on GPU which is currently turned off). Reported-by: Tolga Cakir <cevelnet@gmail.com> Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=112021 Cc: stable@vger.kernel.org # v4.0+, will need backport Tested-by: Tolga Cakir <cevelnet@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (dell-smm) Disallow fan_type() calls on broken machinesPali Rohár2016-06-181-11/+25
| | | | | | | | | | | | | | | | | | | | Some Dell machines have especially broken SMM or BIOS which cause that once fan_type() is called then CPU fan speed going randomly up and down. And for fixing this behaviour reboot is required. So this patch creates fan_type blacklist of affected Dell machines and disallow fan_type() call on them to prevent that erratic behaviour. Old blacklist which disabled loading driver on some machines added in commits a4b45b25f18d ("hwmon: (dell-smm) Blacklist Dell Studio XPS 8100") and 6220f4ebd7b4 ("hwmon: (dell-smm) Blacklist Dell Studio XPS 8000") were moved to FAN_TYPE blacklist. Reported-by: Jan C Peters <jcpeters89@gmail.com> Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=100121 Cc: stable@vger.kernel.org # v4.0+, will need backport Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (dell-smm) Restrict fan control and serial number to CAP_SYS_ADMIN by ↵Pali Rohár2016-06-181-7/+12
| | | | | | | | | | | | | | | | | | | | | | | | | default For security reasons ordinary user must not be able to control fan speed via /proc/i8k by default. Some malicious software running under "nobody" user could be able to turn fan off and cause HW problems. So this patch changes default value of "restricted" parameter to 1. Also restrict reading of DMI_PRODUCT_SERIAL from /proc/i8k via "restricted" parameter. It is because non root user cannot read DMI_PRODUCT_SERIAL from sysfs file /sys/class/dmi/id/product_serial. Old non secure behaviour of file /proc/i8k can be achieved by loading this module with "restricted" parameter set to 0. Note that this patch has effects only for kernels compiled with CONFIG_I8K and only for file /proc/i8k. Hwmon interface provided by this driver was not changed and root access for setting fan speed was needed also before. Reported-by: Mario Limonciello <Mario_Limonciello@dell.com> Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Cc: stable@vger.kernel.org # will need backport Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (dell-smm) Fail in ioctl I8K_BIOS_VERSION when bios version is not a ↵Pali Rohár2016-06-181-0/+5
| | | | | | | | | | | | number ABI of I8K_BIOS_VERSION ioctl can return only number. But new BIOS versions contain also other characters, which does not fit into that ABI. So in case of non digit values return -EINVAL. Reported-by: Mario Limonciello <Mario_Limonciello@dell.com> Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (lm90) use proper type for update_intervalWolfram Sang2016-06-081-1/+1
| | | | | | | The code handles this variable always as unsigned, so adapt the type. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (fam15h_power) Disable preemption when reading registersBorislav Petkov2016-06-081-6/+2
| | | | | | | | | | | | | | | | | | | | | | We need to read a bunch of registers on each compute unit and possibly on the current CPU too. Disable preemption around it. Otherwise, you get: BUG: using smp_processor_id() in preemptible [00000000] code: systemd-udevd/327 caller is read_registers+0x6a/0x110 [fam15h_power] CPU: 3 PID: 327 Comm: systemd-udevd Not tainted 4.7.0-rc1+ #4 Hardware name: HP HP EliteBook 745 G3/807E, BIOS N73 Ver. 01.08 01/28/2016 ... Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Rui Huang <ray.huang@amd.com> Cc: Sherry Hurwitz <sherry.hurwitz@amd.com> Cc: Guenter Roeck <linux@roeck-us.net> Acked-by: Huang Rui <ray.huang@amd.com> Tested-by: Huang Rui <ray.huang@amd.com> Fixes: fa7943449943 ("hwmon: (fam15h_power) Add compute unit accumulated power") Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* Merge branch 'hwmon-for-linus' of ↵Linus Torvalds2016-05-261-1/+1
|\ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging Pull hwmon fixlets from Jean Delvare. * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: Documentation/hwmon: Update links in max34440 hwmon: (emc2103) Fix typo in MODULE_PARM_DESC
| * hwmon: (emc2103) Fix typo in MODULE_PARM_DESCDan Carpenter2016-05-261-1/+1
| | | | | | | | | | | | | | "apd" was intended here instead of "init". Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jean Delvare <jdelvare@suse.de>
* | Merge branch 'next' of ↵Linus Torvalds2016-05-264-60/+18
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux Pull thermal management updates from Zhang Rui: - Introduce generic ADC thermal driver, based on OF thermal (Laxman Dewangan) - Introduce new thermal driver for Tango chips (Marc Gonzalez) - Rockchip driver support for RK3399, RK3366, and some fixes (Caesar Wang, Elaine Zhang and Shawn Lin) - Add CPU power cooling model to Mediatek thermal driver (Dawei Chien) - Wider usage of dev_thermal_zone_of_sensor_register (Eduardo Valentin) - TI thermal driver gained a new maintainer (Keerthy). - Enabled powerclamp driver by checking CPU feature and package cstate counter instead of CPU whitelist (Jacob Pan) - Various fixes on thermal governor, OF thermal, Tegra, and RCAR * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (50 commits) thermal: tango: initialize TEMPSI_CFG thermal: rockchip: use the usleep_range instead of udelay thermal: rockchip: add the notes for better reading thermal: rockchip: Support RK3366 SoCs in the thermal driver thermal: rockchip: handle the power sequence for tsadc controller thermal: rockchip: update the tsadc table for rk3399 thermal: rockchip: fixes the code_to_temp for tsadc driver thermal: rockchip: disable thermal->clk in err case thermal: tegra: add Tegra132 specific SOC_THERM driver thermal: fix ptr_ret.cocci warnings thermal: mediatek: Add cpu dynamic power cooling model. thermal: generic-adc: Add ADC based thermal sensor driver thermal: generic-adc: Add DT binding for ADC based thermal sensor thermal: tegra: fix static checker warning thermal: tegra: mark PM functions __maybe_unused thermal: add temperature sensor support for tango SoC thermal: hisilicon: fix IRQ imbalance enabling thermal: hisilicon: support to use any sensor thermal: rcar: Remove binding docs for r8a7794 thermal: tegra: add PM support ...
| * | hwmon: convert scpi-hwmon to use devm_thermal_zone_of_sensor_registerEduardo Valentin2016-05-171-39/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This changes the driver to use the devm_ version of thermal_zone_of_sensor_register and cleans up the local points and unregister calls. Cc: Jean Delvare <jdelvare@suse.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: lm-sensors@lm-sensors.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
| * | hwmon: convert tmp102 to use devm_thermal_zone_of_sensor_registerEduardo Valentin2016-05-171-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This changes the driver to use the devm_ version of thermal_zone_of_sensor_register and cleans up the local points and unregister calls. Cc: Jean Delvare <jdelvare@suse.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: lm-sensors@lm-sensors.org Cc: linux-kernel@vger.kernel.org Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
| * | hwmon: convert ntc_thermistor to use devm_thermal_zone_of_sensor_registerEduardo Valentin2016-05-171-8/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This changes the driver to use the devm_ version of thermal_zone_of_sensor_register and cleans up the local points and unregister calls. Cc: Jean Delvare <jdelvare@suse.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: lm-sensors@lm-sensors.org Cc: linux-kernel@vger.kernel.org Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
| * | hwmon: convert lm75 to use devm_thermal_zone_of_sensor_registerEduardo Valentin2016-05-171-7/+3
| |/ | | | | | | | | | | | | | | | | | | | | | | | | This changes the driver to use the devm_ version of thermal_zone_of_sensor_register and cleans up the local points and unregister calls. Cc: Jean Delvare <jdelvare@suse.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: lm-sensors@lm-sensors.org Cc: linux-kernel@vger.kernel.org Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* | Merge tag 'pwm/for-4.7-rc1' of ↵Linus Torvalds2016-05-251-6/+20
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "This set of changes introduces an atomic API to the PWM subsystem. This is influenced by the DRM atomic API that was introduced a while back, though it is obviously a lot simpler. The fundamental idea remains the same, though: drivers provide a single callback to implement the atomic configuration of a PWM channel. As a side-effect the PWM subsystem gains the ability for initial state retrieval, so that the logical state mirrors that of the hardware. Many use-cases don't care about this, but for others it is essential. These new features require changes in all users, which these patches take care of. The core is transitioned to use the atomic callback if available and provides a fallback mechanism for other drivers. Changes to transition users and drivers to the atomic API are postponed to v4.8" * tag 'pwm/for-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (30 commits) pwm: Add information about polarity, duty cycle and period to debugfs pwm: Switch to the atomic API pwm: Update documentation pwm: Add core infrastructure to allow atomic updates pwm: Add hardware readout infrastructure pwm: Move the enabled/disabled info into pwm_state pwm: Introduce the pwm_state concept pwm: Keep PWM state in sync with hardware state ARM: Explicitly apply PWM config extracted from pwm_args drm: i915: Explicitly apply PWM config extracted from pwm_args input: misc: pwm-beeper: Explicitly apply PWM config extracted from pwm_args input: misc: max8997: Explicitly apply PWM config extracted from pwm_args backlight: lm3630a: explicitly apply PWM config extracted from pwm_args backlight: lp855x: Explicitly apply PWM config extracted from pwm_args backlight: lp8788: Explicitly apply PWM config extracted from pwm_args backlight: pwm_bl: Use pwm_get_args() where appropriate fbdev: ssd1307fb: Use pwm_get_args() where appropriate regulator: pwm: Use pwm_get_args() where appropriate leds: pwm: Use pwm_get_args() where appropriate input: misc: max77693: Use pwm_get_args() where appropriate ...
| * | hwmon: pwm-fan: Use pwm_get_args() where appropriateBoris Brezillon2016-05-171-6/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PWM framework has clarified the concept of reference PWM config (the platform dependent config retrieved from the DT or the PWM lookup table) and real PWM state. Use pwm_get_args() when the PWM user wants to retrieve this reference config and not the current state. This is part of the rework allowing the PWM framework to support hardware readout and expose real PWM state even when the PWM has just been requested (before the user calls pwm_config/enable/disable()). Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* | | hwmon: (sch5636) trivial fix of spelling mistake on revisionColin Ian King2016-04-251-1/+1
| | | | | | | | | | | | | | | | | | | | | fix spelling mistake, revison -> revision Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Add support for IT8628EGuenter Roeck2016-04-192-3/+18
| | | | | | | | | | | | | | | | | | | | | IT8628E is functionally identical to IT8620E. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Fix pwm_temp_map for system with 6 pwm channelsGuenter Roeck2016-04-191-8/+15
| | | | | | | | | | | | | | | Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Support automatic pwm control on newer chipsGuenter Roeck2016-04-191-14/+187
| | | | | | | | | | | | | | | Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Enhance validation for fan4 and fan5Guenter Roeck2016-04-191-0/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | Several of the chips supported by this driver have a configuration register to enable fan4 and fan5. Use those registers to determine if fan4 and fan5 tachometers are supported. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Support disabling fan control for all pwm control and chipsGuenter Roeck2016-04-191-21/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On/Off mode is only supported for pwm controls 0-2, and not supported at all for IT8603E/IT8623E. For pwm controls 3-6 and for IT8603E/IT8623E, SmartGuardian mode is always enabled. Use it and set the pwm value to the maximum if fan control is disabled. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Formatting cleanupGuenter Roeck2016-04-191-75/+80
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix various checkpatch complaints to clean up the code and make it easier to read. CHECK: Do not include the paragraph about writing to the FSF CHECK: Alignment should match open parenthesis CHECK: Logical continuations should be on the previous line CHECK: No space is necessary after a cast CHECK: Please don't use multiple blank lines CHECK: Please use a blank line after function/struct/union/enum declarations CHECK: spaces preferred around that '+' (ctx:VxV) WARNING: Missing a blank line after declarations No functional change. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Use defines for array sizes and sensor countsGuenter Roeck2016-04-191-24/+34
| | | | | | | | | | | | | | | | | | | | | | | | Using array size defines makes it much easier to find errors in index values and loop counts. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Use BIT macroGuenter Roeck2016-04-191-144/+146
| | | | | | | | | | | | | | | | | | | | | | | | Using the BIT macro makes the code a little easier to read and has the added benefit of making checkpatch happy. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Add support for VIN7 to VIN10 on IT8620EGuenter Roeck2016-04-191-5/+24
| | | | | | | | | | | | | | | | | | | | | IT8620E supports three additional voltage sensors. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Simplify reading voltage registersGuenter Roeck2016-04-191-9/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | Voltage registers are non-sequential. Use a register array instead of a macro to map sensor index to register to simplify the code and to make it easier to add additional voltage sensors. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Support up to 6 temperature sensors on IT8620EGuenter Roeck2016-04-191-8/+40
| | | | | | | | | | | | | | | | | | | | | Add support for the additional temperature sensors on IT8620E. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Convert to use new hwmon APIGuenter Roeck2016-04-191-74/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | Convert to use devm_hwmon_device_register_with_groups to simplify code and reduce code size. This also attaches sysfs attributes to the hwmon device and no longer to the platform device. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Use single group and is_visible for miscellaneous attributesGuenter Roeck2016-04-191-48/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | Use is_visible to determine if attributes should be generated or not. This simplifies the code and reduces object size by about 120 bytes on x86_64. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Use is_visible for pwm attributesGuenter Roeck2016-04-191-72/+65
| | | | | | | | | | | | | | | | | | | | | Simplify code and reduce object size by about 250 bytes on x86_64. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Use is_visible for fan attributesGuenter Roeck2016-04-191-85/+55
| | | | | | | | | | | | | | | | | | | | | Simplify code and reduce object size by almost 500 bytes on x86_64. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Use is_visible for temperature sensorsGuenter Roeck2016-04-191-51/+36
| | | | | | | | | | | | | | | | | | | | | Simplify code and reduce object size by more than 200 bytes on x86_64. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Use is_visible for voltage sensorsGuenter Roeck2016-04-191-68/+56
| | | | | | | | | | | | | | | | | | | | | Simplify code and reduce object size by more than 300 bytes on x86_64. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Rearrange code to avoid forward declarationsGuenter Roeck2016-04-191-336/+327
| | | | | | | | | | | | | | | | | | | | | Cleanup only, no functional change. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Add support for second Super-IO chipGuenter Roeck2016-04-191-15/+34
| | | | | | | | | | | | | | | | | | | | | | | | The Super-IO chip can also reside at SIO address 0x4e, and there can be two Super-IO chips in the system. Add support for it. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Pass SIO base address as parameter to superio functionsGuenter Roeck2016-04-191-65/+72
| | | | | | | | | | | | | | | | | | | | | | | | This will let us support more than one chip on different SIO addresses with the same driver. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Don't use pdev as static driver variableGuenter Roeck2016-04-191-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using the same varible name for function names and as static variable invites misuse and prevents us from adding support for a second chip. Rename pdev to it87_pdev and limit its use to where it is needed. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Simplify error return in it87_device_addGuenter Roeck2016-04-191-7/+3
| | | | | | | | | | | | | | | | | | | | | | | | Return directly on errors if there is no cleanup necessary. Don't create an error message on memory allocation errors. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Add support for second pwm frequency registerGuenter Roeck2016-04-191-31/+69
| | | | | | | | | | | | | | | | | | | | | Recent chips have a separate register to select the pwm2 frequency. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Add support for all pwm channels on IT8620EGuenter Roeck2016-04-191-20/+94
| | | | | | | | | | | | | | | | | | | | | | | | | | | IT8620E supports up to 6 pwm channels. Add support for it. Also check if fan tachometers 4..6 are enabled before instantiating the respective sysfs attributes. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (it87) Add feature flag for AVCC3 supportGuenter Roeck2016-04-191-8/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | AVCC3 is supported on IT8620E, similar to IT8603E. Add feature flag to indicate AVCC3 support. Don't enable it for now on IT8620E since it is unclear if this chip supports it correctly. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (fam15h_power) Add platform check functionHuang Rui2016-04-191-2/+7
| | | | | | | | | | | | | | | | | | | | | This patch adds a platform check function to make code more readable. Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (fam15h_power) Add documentation for TDP and accumulated power algorithmHuang Rui2016-04-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the description to explain the TDP reporting mechanism and accumulated power algorithm. Signed-off-by: Huang Rui <ray.huang@amd.com> Cc: Borislav Petkov <bp@alien8.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (fam15h_power) Introduce a cpu accumulated power reporting algorithmHuang Rui2016-04-191-4/+124
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces an algorithm that computes the average power by reading a delta value of “core power accumulator” register during measurement interval, and then dividing delta value by the length of the time interval. User is able to use power1_average entry to measure the processor power consumption and power1_average_interval entry to set the interval. A simple example: ray@hr-ub:~/tip$ sensors fam15h_power-pci-00c4 Adapter: PCI adapter power1: 19.58 mW (avg = 2.55 mW, interval = 0.01 s) (crit = 15.00 W) ... The result is current average processor power consumption in 10 millisecond. The unit of the result is uWatt. Suggested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Huang Rui <ray.huang@amd.com> Cc: Borislav Petkov <bp@alien8.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (fam15h_power) Add ptsc counter value for accumulated powerHuang Rui2016-04-191-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PTSC is the performance timestamp counter value in a cpu core and the cores in one compute unit have the fixed frequency. So it picks up the performance timestamp counter value of the first core per compute unit to measure the interval for average power per compute unit. Signed-off-by: Huang Rui <ray.huang@amd.com> Cc: Borislav Petkov <bp@alien8.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (fam15h_power) Add compute unit accumulated powerHuang Rui2016-04-191-1/+71
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a member in fam15h_power_data which specifies the compute unit accumulated power. It adds do_read_registers_on_cu to do all the read to all MSRs and run it on one of the online cores on each compute unit with smp_call_function_many(). This behavior can decrease IPI numbers. Suggested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (fam15h_power) Add CPU_SUP_AMD as the dependenceHuang Rui2016-04-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds CONFIG_CPU_SUP_AMD as the dependence of fam15h_power driver. Because the following patch will use the interface from x86/kernel/cpu/amd.c. Otherwise, the below error might be encountered: All errors (new ones prefixed by >>): drivers/built-in.o: In function `fam15h_power_probe': >> fam15h_power.c:(.text+0x26e3a3): undefined reference to >> `amd_get_cores_per_cu' fam15h_power.c:(.text+0x26e41e): undefined reference to `amd_get_cores_per_cu' Reported-by: build test robot <lkp@intel.com> Acked-by: Borislav Petkov <bp@suse.de> Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (max31722) Add support for MAX31722/MAX31723 temperature sensorsTiberiu Breana2016-04-193-0/+176
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add basic support for the Maxim Integrated MAX31722/MAX31723 SPI temperature sensors / thermostats. Includes: - ACPI support; - raw temperature readings; - power management Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX31722-MAX31723.pdf Signed-off-by: Tiberiu Breana <tiberiu.a.breana@intel.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | hwmon: (ads7828) Enable internal referenceAkshay Bhat2016-04-191-0/+10
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | On ads7828 the internal reference defaults to off upon power up. When using internal reference, it needs to be turned on and the voltage needs to settle before normal conversion cycle can be started. Hence perform a dummy read in the probe to enable the internal reference allowing the voltage to settle before performing a normal read. Without this fix, the first read from the ADC when using internal reference always returns incorrect data. Signed-off-by: Akshay Bhat <akshay.bhat@timesys.com> Cc: stable@vger.kernel.org # v4.1+ Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | hwmon: (max1111) Return -ENODEV from max1111_read_channel if not instantiatedGuenter Roeck2016-03-271-0/+6
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arm:pxa_defconfig can result in the following crash if the max1111 driver is not instantiated. Unhandled fault: page domain fault (0x01b) at 0x00000000 pgd = c0004000 [00000000] *pgd=00000000 Internal error: : 1b [#1] PREEMPT ARM Modules linked in: CPU: 0 PID: 300 Comm: kworker/0:1 Not tainted 4.5.0-01301-g1701f680407c #10 Hardware name: SHARP Akita Workqueue: events sharpsl_charge_toggle task: c390a000 ti: c391e000 task.ti: c391e000 PC is at max1111_read_channel+0x20/0x30 LR is at sharpsl_pm_pxa_read_max1111+0x2c/0x3c pc : [<c03aaab0>] lr : [<c0024b50>] psr: 20000013 ... [<c03aaab0>] (max1111_read_channel) from [<c0024b50>] (sharpsl_pm_pxa_read_max1111+0x2c/0x3c) [<c0024b50>] (sharpsl_pm_pxa_read_max1111) from [<c00262e0>] (spitzpm_read_devdata+0x5c/0xc4) [<c00262e0>] (spitzpm_read_devdata) from [<c0024094>] (sharpsl_check_battery_temp+0x78/0x110) [<c0024094>] (sharpsl_check_battery_temp) from [<c0024f9c>] (sharpsl_charge_toggle+0x48/0x110) [<c0024f9c>] (sharpsl_charge_toggle) from [<c004429c>] (process_one_work+0x14c/0x48c) [<c004429c>] (process_one_work) from [<c0044618>] (worker_thread+0x3c/0x5d4) [<c0044618>] (worker_thread) from [<c004a238>] (kthread+0xd0/0xec) [<c004a238>] (kthread) from [<c000a670>] (ret_from_fork+0x14/0x24) This can occur because the SPI controller driver (SPI_PXA2XX) is built as module and thus not necessarily loaded. While building SPI_PXA2XX into the kernel would make the problem disappear, it appears prudent to ensure that the driver is instantiated before accessing its data structures. Cc: Arnd Bergmann <arnd@arndb.de> Cc: stable@vger.kernel.org Signed-off-by: Guenter Roeck <linux@roeck-us.net>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 16:52:26 +0100