Commit Graph

2838 Commits

Author SHA1 Message Date
Colin Ian King d6a442df63 hwmon: (sch5636) trivial fix of spelling mistake on revision
fix spelling mistake, revison -> revision

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-25 07:26:29 -07:00
Guenter Roeck 71a9c23246 hwmon: (it87) Add support for IT8628E
IT8628E is functionally identical to IT8620E.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:38 -07:00
Guenter Roeck 0624d86198 hwmon: (it87) Fix pwm_temp_map for system with 6 pwm channels
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:37 -07:00
Guenter Roeck 2cbb9c370f hwmon: (it87) Support automatic pwm control on newer chips
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:37 -07:00
Guenter Roeck a0df926d33 hwmon: (it87) Enhance validation for fan4 and fan5
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>
2016-04-19 06:32:37 -07:00
Guenter Roeck f1bbe61860 hwmon: (it87) Support disabling fan control for all pwm control and chips
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>
2016-04-19 06:32:37 -07:00
Guenter Roeck c962024e30 hwmon: (it87) Formatting cleanup
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>
2016-04-19 06:32:37 -07:00
Guenter Roeck 2310048db7 hwmon: (it87) Use defines for array sizes and sensor counts
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>
2016-04-19 06:32:37 -07:00
Guenter Roeck 48b2ae7fe9 hwmon: (it87) Use BIT macro
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>
2016-04-19 06:32:37 -07:00
Guenter Roeck f838aa2611 hwmon: (it87) Add support for VIN7 to VIN10 on IT8620E
IT8620E supports three additional voltage sensors.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:37 -07:00
Guenter Roeck 559313c4e9 hwmon: (it87) Simplify reading voltage registers
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>
2016-04-19 06:32:37 -07:00
Guenter Roeck cc18da79d9 hwmon: (it87) Support up to 6 temperature sensors on IT8620E
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>
2016-04-19 06:32:37 -07:00
Guenter Roeck 8638d0afb4 hwmon: (it87) Convert to use new hwmon API
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>
2016-04-19 06:32:36 -07:00
Guenter Roeck d376684880 hwmon: (it87) Use single group and is_visible for miscellaneous attributes
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>
2016-04-19 06:32:36 -07:00
Guenter Roeck 5c3912616d hwmon: (it87) Use is_visible for pwm attributes
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>
2016-04-19 06:32:36 -07:00
Guenter Roeck 9a70ee814d hwmon: (it87) Use is_visible for fan attributes
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>
2016-04-19 06:32:36 -07:00
Guenter Roeck 87533770be hwmon: (it87) Use is_visible for temperature sensors
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>
2016-04-19 06:32:36 -07:00
Guenter Roeck 5292971563 hwmon: (it87) Use is_visible for voltage sensors
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>
2016-04-19 06:32:36 -07:00
Guenter Roeck c1e7a4ca6d hwmon: (it87) Rearrange code to avoid forward declarations
Cleanup only, no functional change.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:36 -07:00
Guenter Roeck e84bd9535e hwmon: (it87) Add support for second Super-IO chip
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>
2016-04-19 06:32:36 -07:00
Guenter Roeck 3c2e35126f hwmon: (it87) Pass SIO base address as parameter to superio functions
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>
2016-04-19 06:32:36 -07:00
Guenter Roeck 8e50e3c3f6 hwmon: (it87) Don't use pdev as static driver variable
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>
2016-04-19 06:32:36 -07:00
Guenter Roeck 5cae84a58e hwmon: (it87) Simplify error return in it87_device_add
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>
2016-04-19 06:32:35 -07:00
Guenter Roeck 60878bcfd3 hwmon: (it87) Add support for second pwm frequency register
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>
2016-04-19 06:32:35 -07:00
Guenter Roeck 36c4d98a78 hwmon: (it87) Add support for all pwm channels on IT8620E
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>
2016-04-19 06:32:35 -07:00
Guenter Roeck 730554059b hwmon: (it87) Add feature flag for AVCC3 support
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>
2016-04-19 06:32:35 -07:00
Huang Rui 1d28e01628 hwmon: (fam15h_power) Add platform check function
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>
2016-04-19 06:32:35 -07:00
Huang Rui a6e232f786 hwmon: (fam15h_power) Add documentation for TDP and accumulated power algorithm
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>
2016-04-19 06:32:35 -07:00
Huang Rui 11bf0d78cc hwmon: (fam15h_power) Introduce a cpu accumulated power reporting algorithm
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>
2016-04-19 06:32:35 -07:00
Huang Rui cdb9e110b1 hwmon: (fam15h_power) Add ptsc counter value for accumulated power
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>
2016-04-19 06:32:35 -07:00
Huang Rui fa79434499 hwmon: (fam15h_power) Add compute unit accumulated power
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>
2016-04-19 06:32:35 -07:00
Huang Rui 3ba4e38415 hwmon: (fam15h_power) Add CPU_SUP_AMD as the dependence
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>
2016-04-19 06:32:34 -07:00
Tiberiu Breana 04e1e70afe hwmon: (max31722) Add support for MAX31722/MAX31723 temperature sensors
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>
2016-04-19 06:32:34 -07:00
Akshay Bhat 7a18afe809 hwmon: (ads7828) Enable internal reference
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>
2016-04-19 06:30:28 -07:00
Guenter Roeck 3c2e2266a5 hwmon: (max1111) Return -ENODEV from max1111_read_channel if not instantiated
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>
2016-03-27 10:37:48 -07:00
Linus Torvalds 46e595a17d ARM: SoC driver updates for v4.6
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
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Merge tag 'armsoc-drivers' of 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
  ...
2016-03-20 15:40:32 -07:00
Adam Baker 630300d5fc hwmon: Create an NSA320 hardware monitoring driver
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>
2016-03-08 18:40:49 -08:00
Guenter Roeck 709066acdd hwmon: (adm1275) Add support for ADM1278
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>
2016-03-05 06:36:03 -08:00
Joseph McNally 54ce3a0d80 hwmon: (ntc_thermistor) Add support for ncpXXxh103
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>
2016-03-05 06:25:34 -08:00
Sanchayan Maity b92fe9e337 hwmon: (iio_hwmon) Allow the driver to accept hypen in device tree node names
Currently the driver calls hwmon_device_register_with_groups which
does not accept hypen in node name and returns EINVAL. Use of hypen
in device tree node name results in probe failure., however use of
hypen in device tree node name is perfectly acceptable.

Change this by allocating a duplicate managed string, replacing
hypen with underscore and then calling hwmon_device_register_with_groups.
This allows the use of hypen in device tree node name while maintaining
backwards compatibility and preventing any possible regressions with
user space.

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-03-05 06:25:34 -08:00
Mike Looijmans df92270357 hwmon: Add LTC2990 sensor driver
This adds support for the Linear Technology LTC2990  I2C System Monitor.
The LTC2990 supports a combination of voltage, current and temperature
monitoring. This driver currently only supports reading two currents
by measuring two differential voltages across series resistors, in
addition to the Vcc supply voltage and internal temperature.

This is sufficient to support the Topic Miami SOM which uses this chip
to monitor the currents flowing into the FPGA and the CPU parts.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-03-05 06:25:34 -08:00
Sudeep Holla c32f5eff2d hwmon: (vexpress) rename vexpress hwmon implementation
The vexpress hwmon implementation is currently just called vexpress.
This is a problem because it clashes with another module with the same
name in regulators.

This patch renames the vexpress hwmon implementation to vexpress-hwmon
so that there will be no clash in the module namespace.

Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: lm-sensors@lm-sensors.org
Reported-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-03-05 06:25:33 -08:00
Olof Johansson 962f08f859 SCPI updates and fixes for v4.6
1. Minor fix to restore functionality in big-endian mode
 
 2. Fix race by decreasing Tx timeout to 20ms
 
 3. Adds support for 64-bit sensor values and energy meter
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Merge tag 'scpi-for-v4.6/updates' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into next/drivers

SCPI updates and fixes for v4.6

1. Minor fix to restore functionality in big-endian mode

2. Fix race by decreasing Tx timeout to 20ms

3. Adds support for 64-bit sensor values and energy meter

* tag 'scpi-for-v4.6/updates' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  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

Signed-off-by: Olof Johansson <olof@lixom.net>
2016-02-24 16:06:58 -08:00
Nishanth Menon 000e094914 hwmon: (gpio-fan) Remove un-necessary speed_index lookup for thermal hook
Thermal hook gpio_fan_get_cur_state is only interested in knowing
the current speed index that was setup in the system, this is
already available as part of fan_data->speed_index which is always
set by set_fan_speed. Using get_fan_speed_index is useful when we
have no idea about the fan speed configuration (for example during
fan_ctrl_init).

When thermal framework invokes
gpio_fan_get_cur_state=>get_fan_speed_index via gpio_fan_get_cur_state
especially in a polled configuration for thermal governor, we
basically hog the i2c interface to the extent that other functions
fail to get any traffic out :(.

Instead, just provide the last state set in the driver - since the gpio
fan driver is responsible for the fan state immaterial of override, the
fan_data->speed_index should accurately reflect the state.

Fixes: b5cf88e46b ("(gpio-fan): Add thermal control hooks")
Reported-by: Tony Lindgren <tony@atomide.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-02-19 17:14:25 -08:00
Peter Rosin acc1469439 hwmon: (ads1015) Handle negative conversion values correctly
Make the divisor signed as DIV_ROUND_CLOSEST is undefined for negative
dividends when the divisor is unsigned.

Signed-off-by: Peter Rosin <peda@axentia.se>
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-02-18 19:14:04 -08:00
Sudeep Holla fb3b07ef39 hwmon: (scpi) add energy meter support
SCPI specification v1.1 adds support for energy sensors. This patch
adds support for the same.

Acked-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2016-02-16 09:26:27 +00:00
Sudeep Holla 2e8741599c firmware: arm_scpi: add support for 64-bit sensor values
SCPI specification version 1.1 extended the sensor from 32-bit to 64-bit
values in order to accommodate new sensor class with 64-bit requirements

Since the SCPI driver sets the higher 32-bit for older protocol version
to zeros, there's no need to explicitly check the SCPI protocol version
and the backward compatibility is maintainted.

Acked-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2016-02-16 09:26:27 +00:00
Gioh Kim 60dee3ca27 hwmon: (fam15h_power) Add bit masking for tdp_limit
Add bit masking to read ApmTdpLimit precisely

Signed-off-by: Gioh Kim <gi-oh.kim@profitbricks.com>
Acked-by: Borislav Petkov <bp@suse.de>
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-01-27 18:48:46 -08:00
Thorsten Leemhuis 6220f4ebd7 hwmon: (dell-smm) Blacklist Dell Studio XPS 8000
Since Linux 4.0 the CPU fan speed is going up and down on Dell Studio
XPS 8000 and 8100 for unknown reasons. The 8100 was already
blacklisted in commit a4b45b25f1 ("hwmon: (dell-smm) Blacklist
Dell Studio XPS 8100"). This patch blacklists the XPS 8000.

Without further debugging on the affected machine, it is not possible
to find the problem. For more details see
https://bugzilla.kernel.org/show_bug.cgi?id=100121

Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Acked-by: Pali Rohár <pali.rohar@gmail.com>
Cc: stable@vger.kernel.org # v4.0+, will need backport
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-01-24 19:26:18 -08:00
Linus Torvalds 6606b342fe Merge git://www.linux-watchdog.org/linux-watchdog
Pull watchdog updates from Wim Van Sebroeck:
 "This adds following items:

   - watchdog restart handler support
   - watchdog reboot notifier support
   - watchdog sysfs attributes
   - support for the following new devices: AMD Mullins platform, AMD
     Carrizo platform, meson8b SoC, CSRatlas7, TS-4800, Alphascale
     asm9260-wdt, Zodiac, Sigma Designs SMP86xx/SMP87xx
   - Changes in refcounting for the watchdog core
   - watchdog core improvements
   - and small fixes"

* git://www.linux-watchdog.org/linux-watchdog: (60 commits)
  watchdog: asm9260: remove __init and __exit annotations
  watchdog: Drop pointer to watchdog device from struct watchdog_device
  watchdog: ziirave: Use watchdog infrastructure to create sysfs attributes
  watchdog: Add support for creating driver specific sysfs attributes
  watchdog: kill unref/ref ops
  watchdog: stmp3xxx: Remove unused variables
  watchdog: add MT7621 watchdog support
  hwmon: (sch56xx) Drop watchdog driver data reference count callbacks
  watchdog: da9055_wdt: Drop reference counting
  watchdog: da9052_wdt: Drop reference counting
  watchdog: Separate and maintain variables based on variable lifetime
  watchdog: diag288: Stop re-using watchdog core internal flags
  watchdog: Create watchdog device in watchdog_dev.c
  watchdog: qcom-wdt: Do not set 'dev' in struct watchdog_device
  watchdog: mena21: Do not use device pointer from struct watchdog_device
  watchdog: gpio: Do not use device pointer from struct watchdog_device
  watchdog: tangox: Print info message using pointer to platform device
  watchdog: bcm2835_wdt: Drop log message if watchdog is stopped
  devicetree: watchdog: add binding for Sigma Designs SMP8642 watchdog
  watchdog: add support for Sigma Designs SMP86xx/SMP87xx
  ...
2016-01-17 12:15:38 -08:00