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2013-11-21Merge tag 'pm+acpi-2-3.13-rc1' of ↵Linus Torvalds3-4/+4
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more ACPI and power management updates from Rafael Wysocki: - ACPI-based device hotplug fixes for issues introduced recently and a fix for an older error code path bug in the ACPI PCI host bridge driver - Fix for recently broken OMAP cpufreq build from Viresh Kumar - Fix for a recent hibernation regression related to s2disk - Fix for a locking-related regression in the ACPI EC driver from Puneet Kumar - System suspend error code path fix related to runtime PM and runtime PM documentation update from Ulf Hansson - cpufreq's conservative governor fix from Xiaoguang Chen - New processor IDs for intel_idle and turbostat and removal of an obsolete Kconfig option from Len Brown - New device IDs for the ACPI LPSS (Low-Power Subsystem) driver and ACPI-based PCI hotplug (ACPIPHP) cleanup from Mika Westerberg - Removal of several ACPI video DMI blacklist entries that are not necessary any more from Aaron Lu - Rework of the ACPI companion representation in struct device and code cleanup related to that change from Rafael J Wysocki, Lan Tianyu and Jarkko Nikula - Fixes for assigning names to ACPI-enumerated I2C and SPI devices from Jarkko Nikula * tag 'pm+acpi-2-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (24 commits) PCI / hotplug / ACPI: Drop unused acpiphp_debug declaration ACPI / scan: Set flags.match_driver in acpi_bus_scan_fixed() ACPI / PCI root: Clear driver_data before failing enumeration ACPI / hotplug: Fix PCI host bridge hot removal ACPI / hotplug: Fix acpi_bus_get_device() return value check cpufreq: governor: Remove fossil comment in the cpufreq_governor_dbs() ACPI / video: clean up DMI table for initial black screen problem ACPI / EC: Ensure lock is acquired before accessing ec struct members PM / Hibernate: Do not crash kernel in free_basic_memory_bitmaps() ACPI / AC: Remove struct acpi_device pointer from struct acpi_ac spi: Use stable dev_name for ACPI enumerated SPI slaves i2c: Use stable dev_name for ACPI enumerated I2C slaves ACPI: Provide acpi_dev_name accessor for struct acpi_device device name ACPI / bind: Use (put|get)_device() on ACPI device objects too ACPI: Eliminate the DEVICE_ACPI_HANDLE() macro ACPI / driver core: Store an ACPI device pointer in struct acpi_dev_node cpufreq: OMAP: Fix compilation error 'r & ret undeclared' PM / Runtime: Fix error path for prepare PM / Runtime: Update documentation around probe|remove|suspend cpufreq: conservative: set requested_freq to policy max when it is over policy max ...
2013-11-19Merge branch 'pm-cpufreq'Rafael J. Wysocki3-4/+4
* pm-cpufreq: cpufreq: governor: Remove fossil comment in the cpufreq_governor_dbs() cpufreq: OMAP: Fix compilation error 'r & ret undeclared' cpufreq: conservative: set requested_freq to policy max when it is over policy max
2013-11-16cpufreq: governor: Remove fossil comment in the cpufreq_governor_dbs()lan,Tianyu1-4/+0
The related code has been changed and the comment is out of date. So remove it. Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-11-16Merge branch 'for-linus' of ↵Linus Torvalds2-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree updates from Jiri Kosina: "Usual earth-shaking, news-breaking, rocket science pile from trivial.git" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (23 commits) doc: usb: Fix typo in Documentation/usb/gadget_configs.txt doc: add missing files to timers/00-INDEX timekeeping: Fix some trivial typos in comments mm: Fix some trivial typos in comments irq: Fix some trivial typos in comments NUMA: fix typos in Kconfig help text mm: update 00-INDEX doc: Documentation/DMA-attributes.txt fix typo DRM: comment: `halve' -> `half' Docs: Kconfig: `devlopers' -> `developers' doc: typo on word accounting in kprobes.c in mutliple architectures treewide: fix "usefull" typo treewide: fix "distingush" typo mm/Kconfig: Grammar s/an/a/ kexec: Typo s/the/then/ Documentation/kvm: Update cpuid documentation for steal time and pv eoi treewide: Fix common typo in "identify" __page_to_pfn: Fix typo in comment Correct some typos for word frequency clk: fixed-factor: Fix a trivial typo ...
2013-11-14Merge tag 'pm+acpi-3.13-rc1' of ↵Linus Torvalds70-2936/+1517
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI and power management updates from Rafael J Wysocki: - New power capping framework and the the Intel Running Average Power Limit (RAPL) driver using it from Srinivas Pandruvada and Jacob Pan. - Addition of the in-kernel switching feature to the arm_big_little cpufreq driver from Viresh Kumar and Nicolas Pitre. - cpufreq support for iMac G5 from Aaro Koskinen. - Baytrail processors support for intel_pstate from Dirk Brandewie. - cpufreq support for Midway/ECX-2000 from Mark Langsdorf. - ARM vexpress/TC2 cpufreq support from Sudeep KarkadaNagesha. - ACPI power management support for the I2C and SPI bus types from Mika Westerberg and Lv Zheng. - cpufreq core fixes and cleanups from Viresh Kumar, Srivatsa S Bhat, Stratos Karafotis, Xiaoguang Chen, Lan Tianyu. - cpufreq drivers updates (mostly fixes and cleanups) from Viresh Kumar, Aaro Koskinen, Jungseok Lee, Sudeep KarkadaNagesha, Lukasz Majewski, Manish Badarkhe, Hans-Christian Egtvedt, Evgeny Kapaev. - intel_pstate updates from Dirk Brandewie and Adrian Huang. - ACPICA update to version 20130927 includig fixes and cleanups and some reduction of divergences between the ACPICA code in the kernel and ACPICA upstream in order to improve the automatic ACPICA patch generation process. From Bob Moore, Lv Zheng, Tomasz Nowicki, Naresh Bhat, Bjorn Helgaas, David E Box. - ACPI IPMI driver fixes and cleanups from Lv Zheng. - ACPI hotplug fixes and cleanups from Bjorn Helgaas, Toshi Kani, Zhang Yanfei, Rafael J Wysocki. - Conversion of the ACPI AC driver to the platform bus type and multiple driver fixes and cleanups related to ACPI from Zhang Rui. - ACPI processor driver fixes and cleanups from Hanjun Guo, Jiang Liu, Bartlomiej Zolnierkiewicz, Mathieu Rhéaume, Rafael J Wysocki. - Fixes and cleanups and new blacklist entries related to the ACPI video support from Aaron Lu, Felipe Contreras, Lennart Poettering, Kirill Tkhai. - cpuidle core cleanups from Viresh Kumar and Lorenzo Pieralisi. - cpuidle drivers fixes and cleanups from Daniel Lezcano, Jingoo Han, Bartlomiej Zolnierkiewicz, Prarit Bhargava. - devfreq updates from Sachin Kamat, Dan Carpenter, Manish Badarkhe. - Operation Performance Points (OPP) core updates from Nishanth Menon. - Runtime power management core fix from Rafael J Wysocki and update from Ulf Hansson. - Hibernation fixes from Aaron Lu and Rafael J Wysocki. - Device suspend/resume lockup detection mechanism from Benoit Goby. - Removal of unused proc directories created for various ACPI drivers from Lan Tianyu. - ACPI LPSS driver fix and new device IDs for the ACPI platform scan handler from Heikki Krogerus and Jarkko Nikula. - New ACPI _OSI blacklist entry for Toshiba NB100 from Levente Kurusa. - Assorted fixes and cleanups related to ACPI from Andy Shevchenko, Al Stone, Bartlomiej Zolnierkiewicz, Colin Ian King, Dan Carpenter, Felipe Contreras, Jianguo Wu, Lan Tianyu, Yinghai Lu, Mathias Krause, Liu Chuansheng. - Assorted PM fixes and cleanups from Andy Shevchenko, Thierry Reding, Jean-Christophe Plagniol-Villard. * tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (386 commits) cpufreq: conservative: fix requested_freq reduction issue ACPI / hotplug: Consolidate deferred execution of ACPI hotplug routines PM / runtime: Use pm_runtime_put_sync() in __device_release_driver() ACPI / event: remove unneeded NULL pointer check Revert "ACPI / video: Ignore BIOS initial backlight value for HP 250 G1" ACPI / video: Quirk initial backlight level 0 ACPI / video: Fix initial level validity test intel_pstate: skip the driver if ACPI has power mgmt option PM / hibernate: Avoid overflow in hibernate_preallocate_memory() ACPI / hotplug: Do not execute "insert in progress" _OST ACPI / hotplug: Carry out PCI root eject directly ACPI / hotplug: Merge device hot-removal routines ACPI / hotplug: Make acpi_bus_hot_remove_device() internal ACPI / hotplug: Simplify device ejection routines ACPI / hotplug: Fix handle_root_bridge_removal() ACPI / hotplug: Refuse to hot-remove all objects with disabled hotplug ACPI / scan: Start matching drivers after trying scan handlers ACPI: Remove acpi_pci_slot_init() headers from internal.h ACPI / blacklist: fix name of ThinkPad Edge E530 PowerCap: Fix build error with option -Werror=format-security ... Conflicts: arch/arm/mach-omap2/opp.c drivers/Kconfig drivers/spi/spi.c
2013-11-14cpufreq: OMAP: Fix compilation error 'r & ret undeclared'viresh kumar1-0/+1
With a recent change "d4019f0 cpufreq: move freq change notifications to cpufreq core" few variables (r & ret) are removed by mistake and hence these warnings: drivers/cpufreq/omap-cpufreq.c: In function omap_target: drivers/cpufreq/omap-cpufreq.c:64:2: error: ret undeclared (first use in this function) drivers/cpufreq/omap-cpufreq.c:64:2: note: each undeclared identifier is reported only once for each function it appears in drivers/cpufreq/omap-cpufreq.c:94:3: error: r undeclared (first use in this function) drivers/cpufreq/omap-cpufreq.c:116:1: warning: control reaches end of non-void function [-Wreturn-type] Lets fix them by declaring those variables again. Fixes: d4019f0a92ab (cpufreq: move freq change notifications to cpufreq core) Reported-by: Sebastian Capella <sebastian.capella@linaro.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-11-13cpufreq: conservative: set requested_freq to policy max when it is over ↵Xiaoguang Chen1-0/+3
policy max When requested_freq is over policy->max, set it to policy->max. This can help to speed up decreasing frequency. Signed-off-by: Xiaoguang Chen <chenxg@marvell.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-11-12Merge tag 'devicetree-for-3.13' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: "DeviceTree updates for 3.13. This is a bit larger pull request than usual for this cycle with lots of clean-up. - Cross arch clean-up and consolidation of early DT scanning code. - Clean-up and removal of arch prom.h headers. Makes arch specific prom.h optional on all but Sparc. - Addition of interrupts-extended property for devices connected to multiple interrupt controllers. - Refactoring of DT interrupt parsing code in preparation for deferred probe of interrupts. - ARM cpu and cpu topology bindings documentation. - Various DT vendor binding documentation updates" * tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (82 commits) powerpc: add missing explicit OF includes for ppc dt/irq: add empty of_irq_count for !OF_IRQ dt: disable self-tests for !OF_IRQ of: irq: Fix interrupt-map entry matching MIPS: Netlogic: replace early_init_devtree() call of: Add Panasonic Corporation vendor prefix of: Add Chunghwa Picture Tubes Ltd. vendor prefix of: Add AU Optronics Corporation vendor prefix of/irq: Fix potential buffer overflow of/irq: Fix bug in interrupt parsing refactor. of: set dma_mask to point to coherent_dma_mask of: add vendor prefix for PHYTEC Messtechnik GmbH DT: sort vendor-prefixes.txt of: Add vendor prefix for Cadence of: Add empty for_each_available_child_of_node() macro definition arm/versatile: Fix versatile irq specifications. of/irq: create interrupts-extended property microblaze/pci: Drop PowerPC-ism from irq parsing of/irq: Create of_irq_parse_and_map_pci() to consolidate arch code. of/irq: Use irq_of_parse_and_map() ...
2013-11-11Merge tag 'soc-for-linus' of ↵Linus Torvalds1-18/+43
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC platform changes from Olof Johansson: "New and updated SoC support. Among the things new for this release are: - More support for the AM33xx platforms from TI - Tegra 124 support, and some updates to older tegra families as well - imx cleanups and updates across the board - A rename of Broadcom's Mobile platforms which were introduced as ARCH_BCM, and turned out to be too broad a name. New name is ARCH_BCM_MOBILE. - A whole bunch of updates and fixes for integrator, making the platform code more modern and switches over to DT-only booting. - Support for two new Renesas shmobile chipsets. Next up for them is more work on consolidation instead of introduction of new non-multiplatform SoCs, we're all looking forward to that! - Misc cleanups for older Samsung platforms, some Allwinner updates, etc" * tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (159 commits) ARM: bcm281xx: Add ARCH_BCM_MOBILE to bcm config ARM: bcm_defconfig: Run "make savedefconfig" ARM: bcm281xx: Add ARCH Timers to config rename ARCH_BCM to ARCH_BCM_MOBILE (mach-bcm) ARM: vexpress: Enable platform-specific options in defconfig ARM: vexpress: Make defconfig work again ARM: sunxi: remove .init_time hooks ARM: imx: enable suspend for imx6sl ARM: imx: ensure dsm_request signal is not asserted when setting LPM ARM: imx6q: call WB and RBC configuration from imx6q_pm_enter() ARM: imx6q: move low-power code out of clock driver ARM: imx: drop extern with function prototypes in common.h ARM: imx: reset core along with enable/disable operation ARM: imx: do not return from imx_cpu_die() call ARM: imx_v6_v7_defconfig: Select CONFIG_PROVE_LOCKING ARM: imx_v6_v7_defconfig: Enable LEDS_GPIO related options ARM: mxs_defconfig: Turn off CONFIG_DEBUG_GPIO ARM: imx: replace imx6q_restart() with mxc_restart() ARM: mach-imx: mm-imx5: Retrieve iomuxc base address from dt ARM: mach-imx: mm-imx5: Retrieve tzic base address from dt ...
2013-11-08Merge branch 'pm-cpufreq'Rafael J. Wysocki1-1/+6
* pm-cpufreq: cpufreq: conservative: fix requested_freq reduction issue
2013-11-07cpufreq: conservative: fix requested_freq reduction issueXiaoguang Chen1-1/+6
When decreasing frequency, requested_freq may be less than freq_target, So requested_freq minus freq_target may be negative, But reqested_freq's unit is unsigned int, then the negative result will be one larger interger which may be even higher than requested_freq. This patch is to fix such issue. when result becomes negative, set requested_freq as the min value of policy. Signed-off-by: Xiaoguang Chen <chenxg@marvell.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-11-07Merge branch 'pm-cpufreq'Rafael J. Wysocki48-651/+732
* pm-cpufreq: intel_pstate: skip the driver if ACPI has power mgmt option cpufreq: ondemand: Remove redundant return statement cpufreq: move freq change notifications to cpufreq core cpufreq: distinguish drivers that do asynchronous notifications cpufreq/intel_pstate: Add static declarations to internal functions cpufreq: arm_big_little: reconfigure switcher behavior at run time cpufreq: arm_big_little: add in-kernel switching (IKS) support ARM: vexpress/TC2: register vexpress-spc cpufreq device cpufreq: arm_big_little: add vexpress SPC interface driver ARM: vexpress/TC2: add cpu clock support ARM: vexpress/TC2: add support for CPU DVFS
2013-11-07Merge remote-tracking branch 'grant/devicetree/next' into for-nextRob Herring3-3/+6
2013-11-07intel_pstate: skip the driver if ACPI has power mgmt optionAdrian Huang1-0/+74
Do not load the Intel pstate driver if the platform firmware (ACPI BIOS) supports the power management alternatives. The ACPI BIOS indicates that the OS control mode can be used if the _PSS (Performance Supported States) is defined in ACPI table. For the OS control mode, the Intel pstate driver will be loaded. HP BIOS has several power management modes (firmware, OS-control and so on). For the OS control mode in HP BIOS, the Intel p-state driver will be loaded. When the customer chooses the firmware power management in HP BIOS, the Intel p-state driver will be ignored. I put hw_vendor_info vendor_info in case other vendors (Dell, Lenovo...) have their firmware power management. Vendors should make sure their firmware power management works properly, and they can go for adding their vendor info to the variable. I have verified the patch on HP ProLiant servers. The patch worked correctly. Signed-off-by: Adrian Huang <adrianhuang0701@gmail.com> [rjw: Fixed up !CONFIG_ACPI build] [Linda Knippers: As Adrian has recently left HP, I retested the updated patch on an HP ProLiant server and verified that it is behaving correctly. When the BIOS is configured for OS control for power management, the intel_pstate driver loads as expected. When the BIOS is configured to provide the power management, the intel_pstate driver does not load and we get the pcc_cpufreq driver instead.] Signed-off-by: Linda Knippers <linda.knippers@hp.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-11-01cpufreq: ondemand: Remove redundant return statementStratos Karafotis1-1/+0
After commit dfa5bb622555 (cpufreq: ondemand: Change the calculation of target frequency), this return statement is no longer needed. Reported-by: Henrik Nilsson <Karl.Henrik.Nilsson@gmail.com> Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31cpufreq: move freq change notifications to cpufreq coreViresh Kumar40-624/+198
Most of the drivers do following in their ->target_index() routines: struct cpufreq_freqs freqs; freqs.old = old freq... freqs.new = new freq... cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); /* Change rate here */ cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); This is replicated over all cpufreq drivers today and there doesn't exists a good enough reason why this shouldn't be moved to cpufreq core instead. There are few special cases though, like exynos5440, which doesn't do everything on the call to ->target_index() routine and call some kind of bottom halves for doing this work, work/tasklet/etc.. They may continue doing notification from their own code as flag: CPUFREQ_ASYNC_NOTIFICATION is already set for them. All drivers are also modified in this patch to avoid breaking 'git bisect', as double notification would happen otherwise. Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Russell King <linux@arm.linux.org.uk> Acked-by: Stephen Warren <swarren@nvidia.com> Tested-by: Andrew Lunn <andrew@lunn.ch> Tested-by: Nicolas Pitre <nicolas.pitre@linaro.org> Reviewed-by: Lan Tianyu <tianyu.lan@intel.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31cpufreq: distinguish drivers that do asynchronous notificationsViresh Kumar2-1/+2
There are few special cases like exynos5440 which doesn't send POSTCHANGE notification from their ->target() routine and call some kind of bottom halves for doing this work, work/tasklet/etc.. From which they finally send POSTCHANGE notification. Its better if we distinguish them from other cpufreq drivers in some way so that core can handle them specially. So this patch introduces another flag: CPUFREQ_ASYNC_NOTIFICATION, which will be set by such drivers. This also changes exynos5440-cpufreq.c and powernow-k8 in order to set this flag. Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31cpufreq/intel_pstate: Add static declarations to internal functionsDirk Brandewie1-2/+2
Fixes warnings reported by kbuild test robot sparse warnings: (new ones prefixed by >>) drivers/cpufreq/intel_pstate.c:729:6: sparse: symbol 'copy_pid_params' was not declared. Should it be static? drivers/cpufreq/intel_pstate.c:739:6: sparse: symbol 'copy_cpu_funcs' was not declared. Should it be static? Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31cpufreq: arm_big_little: reconfigure switcher behavior at run timeNicolas Pitre1-3/+51
The b.L switcher can be turned on/off at run time. It is therefore necessary to change the cpufreq driver behavior accordingly. The driver must be unregistered/registered with the cpufreq core to reconfigure freq tables for the virtual or actual CPUs. This is accomplished via the b.L switcher notifier callback. Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31cpufreq: arm_big_little: add in-kernel switching (IKS) supportViresh Kumar2-31/+337
This patch adds IKS (In Kernel Switcher) support to cpufreq driver. This creates a combined freq table for A7-A15 CPU pairs. A7 frequencies are virtualized and scaled down to half the actual frequencies to approximate a linear scale across the combined A7+A15 range. When the requested frequency change crosses the A7-A15 boundary a cluster switch is invoked. Based on earlier work from Sudeep KarkadaNagesha. Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-30cpufreq: arm_big_little: add vexpress SPC interface driverSudeep KarkadaNagesha3-0/+79
The TC2(i.e. CA15_A7) Versatile Express has external Cortex M3 based power controller which is responsible for CPU DVFS and SPC provides the interface for the same. This patch adds a tiny interface driver to check if OPPs are initialised by SPC platform code and register the arm_big_little cpufreq driver. Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-28Merge branch 'pm-cpufreq'Rafael J. Wysocki66-2326/+822
* pm-cpufreq: (167 commits) cpufreq: create per policy rwsem instead of per CPU cpu_policy_rwsem intel_pstate: Add Baytrail support intel_pstate: Refactor driver to support CPUs with different MSR layouts cpufreq: Implement light weight ->target_index() routine PM / OPP: rename header to linux/pm_opp.h PM / OPP: rename data structures to dev_pm equivalents PM / OPP: rename functions to dev_pm_opp* cpufreq / governor: Remove fossil comment cpufreq: exynos4210: Use the common clock framework to set APLL clock rate cpufreq: exynos4x12: Use the common clock framework to set APLL clock rate cpufreq: Detect spurious invocations of update_policy_cpu() cpufreq: pmac64: enable cpufreq on iMac G5 (iSight) model cpufreq: pmac64: provide cpufreq transition latency for older G5 models cpufreq: pmac64: speed up frequency switch cpufreq: highbank-cpufreq: Enable Midway/ECX-2000 exynos-cpufreq: fix false return check from "regulator_set_voltage" speedstep-centrino: Remove unnecessary braces acpi-cpufreq: Add comment under ACPI_ADR_SPACE_SYSTEM_IO case cpufreq: arm-big-little: use clk_get instead of clk_get_sys cpufreq: exynos: Show a list of available frequencies ... Conflicts: drivers/devfreq/exynos/exynos5_bus.c
2013-10-28Merge branch 'acpi-cleanup'Rafael J. Wysocki1-3/+2
* acpi-cleanup: (34 commits) ACPI / proc: Remove alarm proc file ACPI: Remove CONFIG_ACPI_PROCFS_POWER and cm_sbsc.c ACPI / SBS: Remove SBS's proc directory ACPI / Battery: Remove battery's proc directory ACP / fan: trivial style cleanup ACPI / processor: remove superfluous pr == NULL checks ACPI / mm: use NUMA_NO_NODE toshiba_acpi: convert acpi_evaluate_object() to acpi_evaluate_integer() intel-smartconnect: convert acpi_evaluate_object() to acpi_evaluate_integer() intel-rst: convert acpi_evaluate_object() to acpi_evaluate_integer() fujitsu-laptop: convert acpi_evaluate_object() to acpi_evaluate_integer() i2c-hid: convert acpi_evaluate_object() to acpi_evaluate_integer() ACPI: dock: convert acpi_evaluate_object() to acpi_evaluate_integer() acpi_processor: convert acpi_evaluate_object() to acpi_evaluate_integer() pnpacpi: convert acpi_get_handle() to acpi_has_method() wmi: convert acpi_get_handle() to acpi_has_method() toshiba_acpi: convert acpi_get_handle() to acpi_has_method() sony-laptop: convert acpi_get_handle() to acpi_has_method() intel_menlow: convert acpi_get_handle() to acpi_has_method() fujitsu-laptop: convert acpi_get_handle() to acpi_has_method() ...
2013-10-26cpufreq: create per policy rwsem instead of per CPU cpu_policy_rwsemviresh kumar1-79/+31
We have per-CPU cpu_policy_rwsem for cpufreq core, but we never use all of them. We always use rwsem of policy->cpu and so we can actually make this rwsem per policy instead. This patch does this change. With this change other tricky situations are also avoided now, like which lock to take while we are changing policy->cpu, etc. Suggested-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Tested-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-26intel_pstate: Add Baytrail supportDirk Brandewie1-0/+35
Add support for the Baytrail processor. Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-26intel_pstate: Refactor driver to support CPUs with different MSR layoutsDirk Brandewie1-46/+98
Non-core processors have a different MSR layout to commumicate P state information. Refactor the driver to use CPU dependent accessors to P state information. Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-26cpufreq: Implement light weight ->target_index() routineViresh Kumar45-725/+219
Currently, the prototype of cpufreq_drivers target routines is: int target(struct cpufreq_policy *policy, unsigned int target_freq, unsigned int relation); And most of the drivers call cpufreq_frequency_table_target() to get a valid index of their frequency table which is closest to the target_freq. And they don't use target_freq and relation after that. So, it makes sense to just do this work in cpufreq core before calling cpufreq_frequency_table_target() and simply pass index instead. But this can be done only with drivers which expose their frequency table with cpufreq core. For others we need to stick with the old prototype of target() until those drivers are converted to expose frequency tables. This patch implements the new light weight prototype for target_index() routine. It looks like this: int target_index(struct cpufreq_policy *policy, unsigned int index); CPUFreq core will call cpufreq_frequency_table_target() before calling this routine and pass index to it. Because CPUFreq core now requires to call routines present in freq_table.c CONFIG_CPU_FREQ_TABLE must be enabled all the time. This also marks target() interface as deprecated. So, that new drivers avoid using it. And Documentation is updated accordingly. It also converts existing .target() to newly defined light weight .target_index() routine for many driver. Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Russell King <linux@arm.linux.org.uk> Acked-by: David S. Miller <davem@davemloft.net> Tested-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rjw@rjwysocki.net>
2013-10-26Merge back earlier 'pm-cpufreq' material.Rafael J. Wysocki65-1443/+405
Conflicts: drivers/cpufreq/omap-cpufreq.c
2013-10-26PM / OPP: rename header to linux/pm_opp.hNishanth Menon6-6/+6
Since Operating Performance Points (OPP) functions are specific to device specific power management, be specific and rename opp.h to pm_opp.h Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-26PM / OPP: rename data structures to dev_pm equivalentsNishanth Menon4-6/+6
Since Operating Performance Points (OPP) data structures are specific to device specific power management, be specific and rename opp_* data structures in OPP library with dev_pm_opp_* equivalent. Affected structures are: struct opp enum opp_event Minor checkpatch warning resulting of this change was fixed as well. Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-26PM / OPP: rename functions to dev_pm_opp*Nishanth Menon5-32/+33
Since Operating Performance Points (OPP) functions are specific to device specific power management, be specific and rename opp_* accessors in OPP library with dev_pm_opp_* equivalent. Affected functions are: opp_get_voltage opp_get_freq opp_get_opp_count opp_find_freq_exact opp_find_freq_floor opp_find_freq_ceil opp_add opp_enable opp_disable opp_get_notifier opp_init_cpufreq_table opp_free_cpufreq_table Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Nishanth Menon <nm@ti.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-25acpi-cpufreq: Fail initialization if driver cannot be registeredRafael J. Wysocki1-4/+4
Make acpi_cpufreq_init() return error codes when the driver cannot be registered so that the module doesn't stay useless in memory and so that acpi_cpufreq_exit() doesn't attempt to unregister things that have never been registered when the module is unloaded. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
2013-10-22intel_pstate: Correct calculation of min pstate valueDirk Brandewie1-2/+3
The minimum pstate is supposed to be a percentage of the maximum P state available. Calculate min using max pstate and not the current max which may have been limited by the user Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-22intel_pstate: Improve accuracy by not truncating until final resultBrennan Shacklett1-18/+15
This patch addresses Bug 60727 (https://bugzilla.kernel.org/show_bug.cgi?id=60727) which was due to the truncation of intermediate values in the calculations, which causes the code to consistently underestimate the current cpu frequency, specifically 100% cpu utilization was truncated down to the setpoint of 97%. This patch fixes the problem by keeping the results of all intermediate calculations as fixed point numbers rather scaling them back and forth between integers and fixed point. References: https://bugzilla.kernel.org/show_bug.cgi?id=60727 Signed-off-by: Brennan Shacklett <bpshacklett@gmail.com> Acked-by: Dirk Brandewie <dirk.j.brandewie@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-18cpufreq / governor: Remove fossil commentLan Tianyu1-11/+0
cpufreq_set_policy() has been changed to origin __cpufreq_set_policy() and policy->lock has been converted to rewrite lock by commit 5a01f2. So remove the comment. Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-17cpufreq: exynos4210: Use the common clock framework to set APLL clock rateLukasz Majewski1-59/+8
In the exynos4210_set_apll() function, the APLL frequency is set with direct register manipulation. Such approach is not allowed in the common clock framework. The frequency is changed, but the corresponding clock value is not updated. This causes wrong frequency read from cpufreq's cpuinfo_cur_freq sysfs attribute. Also direct manipulation with PLL's S parameter has been removed. It is already done at PLL35xx code. Tested at: - Exynos4210 - Trats board (linux 3.12-rc4) Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Reviewed-by: Yadwinder Singh Brar <yadi.brar@samsung.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-17cpufreq: exynos4x12: Use the common clock framework to set APLL clock rateLukasz Majewski1-61/+8
In the exynos4x12_set_apll() function, the APLL frequency is set with direct register manipulation. Such approach is not allowed in the common clock framework. The frequency is changed, but the corresponding clock value is not updated. This causes wrong frequency read from cpufreq's cpuinfo_cur_freq sysfs attribute. Also direct manipulation with PLL's S parameter has been removed. It is already done at PLL35xx code. Tested at: - Exynos4412 - Trats2 board (linux 3.12-rc4) Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Reviewed-by: Yadwinder Singh Brar <yadi.brar@samsung.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-17cpufreq: Detect spurious invocations of update_policy_cpu()Srivatsa S. Bhat1-1/+1
The function update_policy_cpu() is expected to be called when the policy->cpu of a cpufreq policy is to be changed: ie., the new CPU nominated to become the policy->cpu is different from the old one. Print a warning if it is invoked with new_cpu == old_cpu, since such an invocation might hint at a faulty logic in the caller. Suggested-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-17cpufreq: pmac64: enable cpufreq on iMac G5 (iSight) modelAaro Koskinen1-1/+2
Enable cpufreq on iMac G5 (iSight) model. Tested with the 2.1 GHz version. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-17cpufreq: pmac64: provide cpufreq transition latency for older G5 modelsAaro Koskinen1-1/+3
Currently cpufreq ondemand governor cannot used on older G5 models, because the transition latency is set to CPUFREQ_ETERNAL. Provide a value based on a measurement on Xserve G5, which happens to be also the highest allowed latency. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-17cpufreq: pmac64: speed up frequency switchAaro Koskinen1-3/+3
Some functions on switch path use msleep() which is inaccurate, and depends on HZ. With HZ=100 msleep(1) takes actually over ten times longer. Using usleep_range() we get more accurate sleeps. I measured the "pfunc_slewing_done" polling to take 300us at max (on 2.3GHz dual-processor Xserve G5), so using 500us sleep there should be fine. With the patch, g5_switch_freq() duration drops from ~50ms to ~10ms on Xserve with HZ=100. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-17cpufreq: highbank-cpufreq: Enable Midway/ECX-2000Mark Langsdorf1-1/+2
Calxeda's new ECX-2000 part uses the same cpufreq interface as highbank, so add it to the driver's compatibility list. This is a minor change that can safely be applied to the 3.10 and 3.11 stable trees. Signed-off-by: Mark Langsdorf <mark.langsdorf@calxeda.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-17exynos-cpufreq: fix false return check from "regulator_set_voltage"Manish Badarkhe1-1/+1
Currently, code checks false return value from "regulator_set_voltage" to show failure message. Modify the code to check proper return value from "regulator_set_voltage". Signed-off-by: Manish Badarkhe <badarkhe.manish@gmail.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-17speedstep-centrino: Remove unnecessary bracesEvgeny Kapaev1-2/+1
As per coding style, braces {} are not necessary for single statement block Signed-off-by: Evgeny Kapaev <orener300@gmail.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-17acpi-cpufreq: Add comment under ACPI_ADR_SPACE_SYSTEM_IO caseViresh Kumar1-1/+6
policy->cur is now set by cpufreq core when cpufreq_driver->get() is defined and so drivers aren't required to set it. When space_id is ACPI_ADR_SPACE_SYSTEM_IO for acpi cpufreq driver it doesn't set ->get to a valid function pointer and so policy->cur is required to be set by driver. This is already followed in acpi-cpufreq driver. This patch adds a comment describing why we need to set policy->cur from driver. Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-17cpufreq: s3c64xx: Rename index to driver_dataCharles Keepax1-1/+1
The index field of cpufreq_frequency_table has been renamed to driver_data by commit 5070158 (cpufreq: rename index as driver_data in cpufreq_frequency_table). This patch updates the s3c64xx driver to match. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Cc: 3.11+ <stable@vger.kernel.org> # 3.11+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-17cpufreq: arm-big-little: use clk_get instead of clk_get_sysSudeep KarkadaNagesha1-1/+1
Currently clk_get_sys is used with cpu-cluster.<n> as the device id which is incorrect. It should be connection/consumer ID instead. It is possible to specify input clock in the cpu device node along with the optional clock-name. clk_get_sys can't handle that. This patch replaces clk_get_sys with clk_get to extend support for clocks specified in the device tree cpu node. Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-17cpufreq: exynos: Show a list of available frequenciesJungseok Lee1-0/+1
This patch adds freq_attr to show a list of exynos5440 scaling available frequencies through sysfs. Common exynos driver already supports this attribute. Signed-off-by: Jungseok Lee <jays.lee@samsung.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-17intel_pstate: Fix type mismatch warningRafael J. Wysocki1-3/+4
The expression in line 398 of intel_pstate.c causes the following warning to be emitted: drivers/cpufreq/intel_pstate.c:398:3: warning: left shift count >= width of type which happens because unsigned long is 32-bit on some architectures. Fix that by using a helper u64 variable and simplify the code slightly. Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-16cpufreq: probe the Integrator cpufreq driver from DTLinus Walleij1-18/+43
This makes the Integrator cpufreq driver probe from the core module device tree node through it's registered platforms device, getting the memory base from the device tree, remapping it and removing dependencies to <mach/platform.h> and <mach/hardware.h> by moving the two affected CM register offsets into the driver. Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>