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2019-05-24treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 56Thomas Gleixner1-13/+1
Based on 1 normalized pattern(s): this driver is free software you can redistribute it and or modify it under the terms of the gnu general public license either version 2 of the license or at your option any later version this driver is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this driver if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 2 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520071858.296418152@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-02hwmon: (fam15h_power) use permission-specific DEVICE_ATTR variantsJulia Lawall1-18/+16
Use DEVICE_ATTR_RO for read only attributes and DEVICE_ATTR_RW for read/write attributes. This simplifies the source code, improves readbility, and reduces the chance of inconsistencies. The conversion was done automatically using coccinelle. It was validated by compiling both the old and the new source code and comparing its text, data, and bss size. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> [groeck: Updated description] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-06-07hwmon: (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>
2016-04-19hwmon: (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>
2016-01-27hwmon: (fam15h_power) Add bit masking for tdp_limitGioh Kim1-1/+9
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>
2015-12-18hwmon: (fam15h_power) Add support for AMD new 15h processorsHuang Rui1-2/+5
AMD Family 15h Models 70h-7fh processors also support TDP power reporting interface. Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-10-31hwmon: (fam15h_power) Add max compute unit accumulated powerHuang Rui1-0/+12
This patch adds a member in fam15h_power_data which specifies the maximum accumulated power in a compute unit. Signed-off-by: Huang Rui <ray.huang@amd.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-10-31hwmon: (fam15h_power) Enable power1_input on AMD CarrizoHuang Rui1-2/+7
This patch enables power1_input attribute for Carrizo platform. Signed-off-by: Huang Rui <ray.huang@amd.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-10-31hwmon: (fam15h_power) Refactor attributes for dynamically addedHuang Rui1-25/+45
Attributes depend on the CPU model the driver gets loaded on. Therefore, add those attributes dynamically at init time. This is more flexible to control the different attributes on different platforms. Suggested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Huang Rui <ray.huang@amd.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-08-27hwmon: (fam15h_power) Add ratio of Tsample to the PTSC periodHuang Rui1-1/+15
This patch adds a member (cpu_pwr_sample_ratio) of fam15h_power_data, that represents the ratio of compute unit power accumulator sample period to the PTSC counter period. Tsample: compute unit power accumulator sample period Tref: the performance timestamp counter period PTSC: performance timestamp counter Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-08-27hwmon: (fam15h_power) Update running_avg_capture bit field to 28Huang Rui1-2/+13
On Carrizo and later platforms, running_avg_capture bit field is extended to 4:31 (28 bits) from 4:25. Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-08-27hwmon: (fam15h_power) Rename fam15h_power_is_internal_node0 functionHuang Rui1-2/+2
We rename fam15h_power_is_internal_node0() function to should_load_on_this_node(), because it may not be node0 from KV and on, and they are single-node processors. Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-08-27hwmon: (fam15h_power) Add support for AMD CarrizoHuang Rui1-0/+1
AMD Carrizo(Fam15h, M60h) processors can report power1_crit (ProcessorPwrWatts) and power1_input (CurrPwrWatts) values. And this patch adds support for CZ. Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-11hwmon: (fam15h_power) Fix NB device ID for F16h M30hAravind Gopalakrishnan1-1/+1
F3 device ID is wrongly included in fam15h_power_id_table for F16h M30h. It should be F4 device ID. Fix this. Signed-off-by: Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-09-16hwmon: (fam15h_power) Add support for two more processorsAravind Gopalakrishnan1-0/+2
Fam16h,M30h(Mullins) and Fam15hM30h(Kaveri) processors can report 'power_crit' value. So, adding their respective device ids. Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-09-16hwmon: (fam15h_power) Make actual power reporting conditionalAravind Gopalakrishnan1-1/+17
power1_input should only be reported for Fam15h, Models 00h-0fh So, introduce a is_visible function to take care of this. As suggested by Guenter here: http://marc.info/?l=linux-kernel&m=141038145616437&w=2 Suggested-by: Guenter Roeck <linux@roeck-us.net> Fixes: 22e32f4f5777 ('x86,AMD: Power driver support for AMD's family 16h processors') Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-04hwmon: (fam15h_power) Remove needless pci dev idAravind Gopalakrishnan1-3/+0
PCI_DEVICE_ID_AMD_16H_NB_F4 can be obtained from it's definition in pci_ids.h. So we don't have to define it again here. Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-04hwmon: (fam15h_power) Convert to devm_hwmon_device_register_with_groupsAxel Lin1-42/+9
Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to simplify the code a bit. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-01-14hwmon: remove DEFINE_PCI_DEVICE_TABLE macroJingoo Han1-1/+1
Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro is not preferred. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-07hwmon: Fix checkpatch warning 'quoted string split across lines'Guenter Roeck1-2/+2
Cc: Corentin Labbe <corentin.labbe@geomatys.fr> Cc: Mark M. Hoffman <mhoffman@lightlink.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Juerg Haefliger <juergh@gmail.com> Cc: Andreas Herrmann <herrmann.der.user@googlemail.com> Cc: Rudolf Marek <r.marek@assembler.cz> Cc: Jim Cromie <jim.cromie@gmail.com> Cc: Roger Lucas <vt8231@hiddenengine.co.uk> Cc: Marc Hulsman <m.hulsman@tudelft.nl> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-12-11Merge tag 'driver-core-3.8-rc1' of ↵Linus Torvalds1-5/+5
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg Kroah-Hartman: "Here's the large driver core updates for 3.8-rc1. The biggest thing here is the various __dev* marking removals. This is going to be a pain for the merge with different subsystem trees, I know, but all of the patches included here have been ACKed by their various subsystem maintainers, as they wanted them to go through here. If this is too much of a pain, I can pull all of them out of this tree and just send you one with the other fixes/updates and then, after 3.8-rc1 is out, do the rest of the removals to ensure we catch them all, it's up to you. The merges should all be trivial, and Stephen has been doing them all in linux-next for a few weeks now quite easily. Other than the __dev* marking removals, there's nothing major here, some firmware loading updates and other minor things in the driver core. All of these have (much to Stephen's annoyance), been in linux-next for a while. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" Fixed up trivial conflicts in drivers/gpio/gpio-{em,stmpe}.c due to gpio update. * tag 'driver-core-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (93 commits) modpost.c: Stop checking __dev* section mismatches init.h: Remove __dev* sections from the kernel acpi: remove use of __devinit PCI: Remove __dev* markings PCI: Always build setup-bus when PCI is enabled PCI: Move pci_uevent into pci-driver.c PCI: Remove CONFIG_HOTPLUG ifdefs unicore32/PCI: Remove CONFIG_HOTPLUG ifdefs sh/PCI: Remove CONFIG_HOTPLUG ifdefs powerpc/PCI: Remove CONFIG_HOTPLUG ifdefs mips/PCI: Remove CONFIG_HOTPLUG ifdefs microblaze/PCI: Remove CONFIG_HOTPLUG ifdefs dma: remove use of __devinit dma: remove use of __devexit_p firewire: remove use of __devinitdata firewire: remove use of __devinit leds: remove use of __devexit leds: remove use of __devinit leds: remove use of __devexit_p mmc: remove use of __devexit ...
2012-12-05x86,AMD: Power driver support for AMD's family 16h processorsBoris Ostrovsky1-0/+4
Add family 16h PCI ID to AMD's power driver to allow it report power consumption on these processors. Signed-off-by: Boris Ostrovsky <boris.ostrovsky@amd.com> Cc: stable@vger.kernel.org Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-11-28hwmon: remove use of __devexitBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jean Delvare <khali@linux-fr.org> Cc: Alistair John Strachan <alistair@devzero.co.uk> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Juerg Haefliger <juergh@gmail.com> Cc: Andreas Herrmann <herrmann.der.user@googlemail.com> Cc: Clemens Ladisch <clemens@ladisch.de> Cc: Rudolf Marek <r.marek@assembler.cz> Cc: Jim Cromie <jim.cromie@gmail.com> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Cc: Roger Lucas <vt8231@hiddenengine.co.uk> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28hwmon: remove use of __devinitBill Pemberton1-3/+3
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jean Delvare <khali@linux-fr.org> Cc: Alistair John Strachan <alistair@devzero.co.uk> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Juerg Haefliger <juergh@gmail.com> Cc: Andreas Herrmann <herrmann.der.user@googlemail.com> Cc: Clemens Ladisch <clemens@ladisch.de> Cc: Rudolf Marek <r.marek@assembler.cz> Cc: Jim Cromie <jim.cromie@gmail.com> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Cc: Roger Lucas <vt8231@hiddenengine.co.uk> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28hwmon: remove use of __devexit_pBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jean Delvare <khali@linux-fr.org> Cc: Alistair John Strachan <alistair@devzero.co.uk> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Juerg Haefliger <juergh@gmail.com> Cc: Andreas Herrmann <herrmann.der.user@googlemail.com> Cc: Clemens Ladisch <clemens@ladisch.de> Cc: Rudolf Marek <r.marek@assembler.cz> Cc: Jim Cromie <jim.cromie@gmail.com> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Cc: Roger Lucas <vt8231@hiddenengine.co.uk> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-29hwmon, fam15h_power: Change email address, MAINTAINERS entryAndreas Herrmann1-2/+2
Signed-off-by: Andreas Herrmann <herrmann.der.user@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-09-23hwmon: (fam15h_power) Convert to use devm_ functionsGuenter Roeck1-17/+8
Convert to use devm_ functions to reduce code size and simplify the code. Cc: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-09-23hwmon: (fam15h_power) Tweak runavg_range on resumeAndreas Herrmann1-2/+13
The quirk introduced with commit 00250ec90963b7ef6678438888f3244985ecde14 (hwmon: fam15h_power: fix bogus values with current BIOSes) is not only required during driver load but also when system resumes from suspend. The BIOS might set the previously recommended (but unsuitable) initilization value for the running average range register during resume. Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Tested-by: Andreas Hartmann <andihartmann@01019freenet.de> Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: stable@vger.kernel.org # 3.0+
2012-07-21hwmon: (fam15h_power) Fix unintentional integer overflowGuenter Roeck1-1/+2
Expression with two unsigned integer variables is calculated as unsigned integer before it is converted to u64. This may result in an integer overflow. Fix by typecasting the left operand to u64 before performing the left shift. This patch addresses Coverity #402320: Unintentional integer overflow. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org> Acked-by: Andreas Herrmann <andreas.herrmann3@amd.com>
2012-05-20hwmon: use module_pci_driverAxel Lin1-12/+1
This patch converts the drivers in drivers/hwmon/* to use module_pci_driver() macro which makes the code smaller and a bit simpler. Signed-off-by: Axel Lin <axel.lin@gmail.com> Cc: Andreas Herrmann <andreas.herrmann3@amd.com> Cc: Clemens Ladisch <clemens@ladisch.de> Cc: Rudolf Marek <r.marek@assembler.cz> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2012-04-26hwmon: (fam15h_power) Fix pci_device_id arrayGuenter Roeck1-3/+6
pci_match_id() takes an *array* of IDs which must be properly zero- terminated. Reported-by: Ben Hutchings <ben@decadent.org.uk> Cc: stable@vger.kernel.org # 3.0+: 00250ec hwmon: fam15h_power: fix bogus values Cc: stable@vger.kernel.org # 3.0+ Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Jean Delvare <khali@linux-fr.org>
2012-04-18hwmon: fam15h_power: fix bogus values with current BIOSesAndre Przywara1-0/+39
Newer BKDG[1] versions recommend a different initialization value for the running average range register in the northbridge. This improves the power reading by avoiding counter saturations resulting in bogus values for anything below about 80% of TDP power consumption. Updated BIOSes will have this new value set up from the beginning, but meanwhile we correct this value ourselves. This needs to be done on all northbridges, even on those where the driver itself does not register at. This fixes the driver on all current machines to provide proper values for idle load. [1] http://support.amd.com/us/Processor_TechDocs/42301_15h_Mod_00h-0Fh_BKDG.pdf Chapter 3.8: D18F5xE0 Processor TDP Running Average (p. 452) Signed-off-by: Andre Przywara <andre.przywara@amd.com> Acked-by: Jean Delvare <khali@linux-fr.org> [guenter.roeck@ericsson.com: Removed unnecessary return statement] Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Cc: stable@vger.kernel.org # 3.0+
2012-03-23hwmon: (fam15h_power) Increase output resolutionAndre Przywara1-4/+4
On high CPU load the accumulating values in the running_avg_cap register are very low (below 10), so averaging them too early leads to unnecessary poor output resolution. Since we pretend to output micro-Watt we better keep all the bits we have as long as possible. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-03-23hwmon: (fam15h_power) Correct sign extension of running_avg_captureAndreas Herrmann1-1/+1
Wrong bit was used for sign extension which caused wrong end results. Thanks to Andre for spotting this bug. Reported-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: stable@vger.kernel.org
2011-05-25hwmon: Add driver for AMD family 15h processor power informationAndreas Herrmann1-0/+229
This CPU family provides NB register values to gather following TDP information * ProcessorPwrWatts: Specifies in Watts the maximum amount of power the processor can support. * CurrPwrWatts: Specifies in Watts the current amount of power being consumed by the processor. This driver provides * power1_crit (ProcessorPwrWatts) * power1_input (CurrPwrWatts) Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>