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2016-06-08hwmon: (lm90) use proper type for update_intervalWolfram Sang1-1/+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>
2016-06-08hwmon: (fam15h_power) Disable preemption when reading registersBorislav Petkov1-6/+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>
2016-05-26Merge branch 'hwmon-for-linus' of ↵Linus Torvalds1-1/+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
2016-05-26Merge branch 'next' of ↵Linus Torvalds4-60/+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 ...
2016-05-26hwmon: (emc2103) Fix typo in MODULE_PARM_DESCDan Carpenter1-1/+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>
2016-05-25Merge tag 'pwm/for-4.7-rc1' of ↵Linus Torvalds1-6/+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 ...
2016-05-17hwmon: convert scpi-hwmon to use devm_thermal_zone_of_sensor_registerEduardo Valentin1-39/+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>
2016-05-17hwmon: convert tmp102 to use devm_thermal_zone_of_sensor_registerEduardo Valentin1-6/+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>
2016-05-17hwmon: convert ntc_thermistor to use devm_thermal_zone_of_sensor_registerEduardo Valentin1-8/+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>
2016-05-17hwmon: convert lm75 to use devm_thermal_zone_of_sensor_registerEduardo Valentin1-7/+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>
2016-05-17hwmon: pwm-fan: Use pwm_get_args() where appropriateBoris Brezillon1-6/+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>
2016-04-25hwmon: (sch5636) trivial fix of spelling mistake on revisionColin Ian King1-1/+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>
2016-04-19hwmon: (it87) Add support for IT8628EGuenter Roeck2-3/+18
IT8628E is functionally identical to IT8620E. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Fix pwm_temp_map for system with 6 pwm channelsGuenter Roeck1-8/+15
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Support automatic pwm control on newer chipsGuenter Roeck1-14/+187
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Enhance validation for fan4 and fan5Guenter Roeck1-0/+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>
2016-04-19hwmon: (it87) Support disabling fan control for all pwm control and chipsGuenter Roeck1-21/+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>
2016-04-19hwmon: (it87) Formatting cleanupGuenter Roeck1-75/+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>
2016-04-19hwmon: (it87) Use defines for array sizes and sensor countsGuenter Roeck1-24/+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>
2016-04-19hwmon: (it87) Use BIT macroGuenter Roeck1-144/+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>
2016-04-19hwmon: (it87) Add support for VIN7 to VIN10 on IT8620EGuenter Roeck1-5/+24
IT8620E supports three additional voltage sensors. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Simplify reading voltage registersGuenter Roeck1-9/+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>
2016-04-19hwmon: (it87) Support up to 6 temperature sensors on IT8620EGuenter Roeck1-8/+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>
2016-04-19hwmon: (it87) Convert to use new hwmon APIGuenter Roeck1-74/+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>
2016-04-19hwmon: (it87) Use single group and is_visible for miscellaneous attributesGuenter Roeck1-48/+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>
2016-04-19hwmon: (it87) Use is_visible for pwm attributesGuenter Roeck1-72/+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>
2016-04-19hwmon: (it87) Use is_visible for fan attributesGuenter Roeck1-85/+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>
2016-04-19hwmon: (it87) Use is_visible for temperature sensorsGuenter Roeck1-51/+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>
2016-04-19hwmon: (it87) Use is_visible for voltage sensorsGuenter Roeck1-68/+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>
2016-04-19hwmon: (it87) Rearrange code to avoid forward declarationsGuenter Roeck1-336/+327
Cleanup only, no functional change. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Add support for second Super-IO chipGuenter Roeck1-15/+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>
2016-04-19hwmon: (it87) Pass SIO base address as parameter to superio functionsGuenter Roeck1-65/+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>
2016-04-19hwmon: (it87) Don't use pdev as static driver variableGuenter Roeck1-3/+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>
2016-04-19hwmon: (it87) Simplify error return in it87_device_addGuenter Roeck1-7/+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>
2016-04-19hwmon: (it87) Add support for second pwm frequency registerGuenter Roeck1-31/+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>
2016-04-19hwmon: (it87) Add support for all pwm channels on IT8620EGuenter Roeck1-20/+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>
2016-04-19hwmon: (it87) Add feature flag for AVCC3 supportGuenter Roeck1-8/+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>
2016-04-19hwmon: (fam15h_power) Add platform check functionHuang Rui1-2/+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>
2016-04-19hwmon: (fam15h_power) Add documentation for TDP and accumulated power algorithmHuang Rui1-1/+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>
2016-04-19hwmon: (fam15h_power) Introduce a cpu accumulated power reporting algorithmHuang Rui1-4/+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>
2016-04-19hwmon: (fam15h_power) Add ptsc counter value for accumulated powerHuang Rui1-0/+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>
2016-04-19hwmon: (fam15h_power) Add compute unit accumulated powerHuang Rui1-1/+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>
2016-04-19hwmon: (fam15h_power) Add CPU_SUP_AMD as the dependenceHuang Rui1-1/+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>
2016-04-19hwmon: (max31722) Add support for MAX31722/MAX31723 temperature sensorsTiberiu Breana3-0/+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>
2016-04-19hwmon: (ads7828) Enable internal referenceAkshay Bhat1-0/+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>
2016-03-27hwmon: (max1111) Return -ENODEV from max1111_read_channel if not instantiatedGuenter Roeck1-0/+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>
2016-03-21Merge tag 'armsoc-drivers' of ↵Linus Torvalds1-3/+11
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC driver updates from Arnd Bergmann: "Driver updates for ARM SoCs, these contain various things that touch the drivers/ directory but got merged through arm-soc for practical reasons: - Rockchip rk3368 gains power domain support - Small updates for the ARM spmi driver - The Atmel PMC driver saw a larger rework, touching both arch/arm/mach-at91 and drivers/clk/at91 - All reset controller driver changes alway get merged through arm-soc, though this time the largest change is the addition of a MIPS pistachio reset driver - One bugfix for the NXP (formerly Freescale) i.MX weim bus driver" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (43 commits) bus: imx-weim: Take the 'status' property value into account clk: at91: remove useless includes clk: at91: pmc: remove useless capacities handling clk: at91: pmc: drop at91_pmc_base usb: gadget: atmel: access the PMC using regmap ARM: at91: remove useless includes and function prototypes ARM: at91: pm: move idle functions to pm.c ARM: at91: pm: find and remap the pmc ARM: at91: pm: simply call at91_pm_init clk: at91: pmc: move pmc structures to C file clk: at91: pmc: merge at91_pmc_init in atmel_pmc_probe clk: at91: remove IRQ handling and use polling clk: at91: make use of syscon/regmap internally clk: at91: make use of syscon to share PMC registers in several drivers hwmon: (scpi) add energy meter support firmware: arm_scpi: add support for 64-bit sensor values firmware: arm_scpi: decrease Tx timeout to 20ms firmware: arm_scpi: fix send_message and sensor_get_value for big-endian reset: sti: Make reset_control_ops const reset: zynq: Make reset_control_ops const ...
2016-03-09hwmon: Create an NSA320 hardware monitoring driverAdam Baker3-0/+231
Create a driver to support the hardware monitoring chip present in the Zyxel NSA320 and some of the other Zyxel NAS devices. The driver reads fan speed and temperature from a suitably pre-programmed MCU on the device. Signed-off-by: Adam Baker <linux@baker-net.org.uk> [groeck: Dropped .owner field initialization] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-03-05hwmon: (adm1275) Add support for ADM1278Guenter Roeck2-3/+57
ADM1278 is mostly compatible to other chips of the same series. Besides the usual difference in coefficients, it supports a temperature sensor, and it can measure both input and output voltage at the same time. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-03-05hwmon: (ntc_thermistor) Add support for ncpXXxh103Joseph McNally2-1/+45
This patch adds support for the Murata NCP15XH103 thermistor series. Signed-off-by: Joseph McNally <jmcna06@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>