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* Merge branch 'device-properties'Rafael J. Wysocki2015-04-131-1/+2
|\ | | | | | | | | | | | | | | | | | | | | * device-properties: device property: Introduce firmware node type for platform data device property: Make it possible to use secondary firmware nodes driver core: Implement device property accessors through fwnode ones driver core: property: Update fwnode_property_read_string_array() driver core: Add comments about returning array counts ACPI: Introduce has_acpi_companion() driver core / ACPI: Represent ACPI companions using fwnode_handle
| * driver core / ACPI: Represent ACPI companions using fwnode_handleRafael J. Wysocki2015-03-161-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we have struct fwnode_handle, we can use that to point to ACPI companions from struct device objects instead of pointing to struct acpi_device directly. There are two benefits from that. First, the somewhat ugly and hackish struct acpi_dev_node can be dropped and, second, the same struct fwnode_handle pointer can be used in the future to point to other (non-ACPI) firmware device node types. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Grant Likely <grant.likely@linaro.org>
* | ACPI: Add acpi_device_uid() for convenienceAdrian Hunter2015-03-181-0/+1
|/ | | | | | | Add a nicer way to get the ACPI _UID. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* Merge branch 'next' of ↵Linus Torvalds2015-02-191-0/+65
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux Pull thermal managament updates from Zhang Rui: "Specifics: - Abstract the code and introduce helper functions for all int340x thermal drivers. From: Srinivas Pandruvada. - Reorganize the ACPI LPAT table support code so that it can be shared for both ACPI PMIC driver and int340x thermal driver. - Add support for Braswell in intel_soc_dts thermal driver. - a couple of small fixes/cleanups for step_wise governor and int340x thermal driver" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: Thermal/int340x_thermal: remove unused uuids. thermal: step_wise: spelling fixes thermal: int340x: fix sparse warning Thermal/int340x: LPAT conversion for temperature ACPI / PMIC: Use common LPAT table handling functions ACPI / LPAT: Common table processing functions thermal: Intel SoC DTS: Add Braswell support Thermal/int340x/int3402: Provide notification support Thermal/int340x/processor_thermal: Add thermal zone support Thermal/int340x/int3403: Use int340x thermal API Thermal/int340x/int3402: Use int340x thermal API Thermal/int340x: Add common thermal zone handler
| * ACPI / LPAT: Common table processing functionsSrinivas Pandruvada2015-01-291-0/+65
| | | | | | | | | | | | | | | | | | | | Since LPAT table processing is also required for other thermal drivers, moved LPAT table related functions from intel PMIC driver (intel_pmic.c) to a stand alonge module with exported interfaces. In this way there will be no code duplication. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* | kernel.h: remove ancient __FUNCTION__ hackRasmus Villemoes2015-02-121-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | __FUNCTION__ hasn't been treated as a string literal since gcc 3.4, so this only helps people who only test-compile using 3.3 (compiler-gcc3.h barks at anything older than that). Besides, there are almost no occurrences of __FUNCTION__ left in the tree. [akpm@linux-foundation.org: convert remaining __FUNCTION__ references] Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | ACPICA: Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix 2 issues for ↵Lv Zheng2015-02-052-5/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the current GPE APIs ACPICA commit 199cad16530a45aea2bec98e528866e20c5927e1 Since whether the GPE should be disabled/enabled/cleared should only be determined by the GPE driver's state machine: 1. GPE should be disabled if the driver wants to switch to the GPE polling mode when a GPE storm condition is indicated and should be enabled if the driver wants to switch back to the GPE interrupt mode when all of the storm conditions are cleared. The conditions should be protected by the driver's specific lock. 2. GPE should be enabled if the driver has accepted more than one request and should be disabled if the driver has completed all of the requests. The request count should be protected by the driver's specific lock. 3. GPE should be cleared either when the driver is about to handle an edge triggered GPE or when the driver has completed to handle a level triggered GPE. The handling code should be protected by the driver's specific lock. Thus the GPE enabling/disabling/clearing operations are likely to be performed with the driver's specific lock held while we currently cannot do this. This is because: 1. We have the acpi_gbl_gpe_lock held before invoking the GPE driver's handler. Driver's specific lock is likely to be held inside of the handler, thus we can see some dead lock issues due to the reversed locking order or recursive locking. In order to solve such dead lock issues, we need to unlock the acpi_gbl_gpe_lock before invoking the handler. BZ 1100. 2. Since GPE disabling/enabling/clearing should be determined by the GPE driver's state machine, we shouldn't perform such operations inside of ACPICA for a GPE handler to mess up the driver's state machine. BZ 1101. Originally this patch includes a logic to flush GPE handlers, it is dropped due to the following reasons: 1. This is a different issue; 2. Linux OSL has fixed this by flushing SCI in acpi_os_wait_events_complete(). We will pick up this topic when the Linux OSL fix turns out to be not sufficient. Note that currently the internal operations and the acpi_gbl_gpe_lock are also used by ACPI_GPE_DISPATCH_METHOD and ACPI_GPE_DISPATCH_NOTIFY. In order not to introduce regressions, we add one ACPI_GPE_DISPATCH_RAW_HANDLER type to be distiguished from ACPI_GPE_DISPATCH_HANDLER. For which the acpi_gbl_gpe_lock is unlocked before invoking the GPE handler and the internal enabling/disabling operations are bypassed to allow drivers to perform them at a proper position using the GPE APIs and ACPI_GPE_DISPATCH_RAW_HANDLER users should invoke acpi_set_gpe() instead of acpi_enable_gpe()/acpi_disable_gpe() to bypass the internal GPE clearing code in acpi_enable_gpe(). Lv Zheng. Known issues: 1. Edge-triggered GPE lost for frequent enablings On some buggy silicon platforms, GPE enable line may not be directly wired to the GPE trigger line. In that case, when GPE enabling is frequently performed for edge-triggered GPEs, GPE status may stay set without being triggered. This patch may maginify this problem as it allows GPE enabling to be parallel performed during the process the GPEs are handled. This is an existing issue, because: 1. For task context: Current ACPI_GPE_DISPATCH_METHOD practices have proven that this isn't a real issue - we can re-enable edge-triggered GPE in a work queue where the GPE status bit might already be set. 2. For IRQ context: This can even happen when the GPE enabling occurs before returning from the GPE handler and after unlocking the GPE lock. Thus currently no code is included to protect this. Link: https://github.com/acpica/acpica/commit/199cad16 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | ACPICA: Update version to 20150204David E. Box2015-02-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | ACPICA commit e06b1624b02dc8317d144e9a6fe9d684c5fa2f90 Version 20150204. Link: https://github.com/acpica/acpica/commit/e06b1624 Signed-off-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | ACPICA: Update Copyright headers to 2015David E. Box2015-02-0519-19/+19
| | | | | | | | | | | | | | | | | | | | ACPICA commit 8990e73ab2aa15d6a0068b860ab54feff25bee36 Link: https://github.com/acpica/acpica/commit/8990e73a Signed-off-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | ACPICA: Events: Cleanup GPE dispatcher type obtaining codeLv Zheng2015-02-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ACPICA commit 7926d5ca9452c87f866938dcea8f12e1efb58f89 There is an issue in acpi_install_gpe_handler() and acpi_remove_gpe_handler(). The code to obtain the GPE dispatcher type from the Handler->original_flags is wrong: if (((Handler->original_flags & ACPI_GPE_DISPATCH_METHOD) || (Handler->original_flags & ACPI_GPE_DISPATCH_NOTIFY)) && ACPI_GPE_DISPATCH_NOTIFY is 0x03 and ACPI_GPE_DISPATCH_METHOD is 0x02, thus this statement is TRUE for the following dispatcher types: 0x01 (ACPI_GPE_DISPATCH_HANDLER): not expected 0x02 (ACPI_GPE_DISPATCH_METHOD): expected 0x03 (ACPI_GPE_DISPATCH_NOTIFY): expected There is no functional issue due to this because Handler->original_flags is only set in acpi_install_gpe_handler(), and an earlier checker has excluded the ACPI_GPE_DISPATCH_HANDLER: if ((gpe_event_info->Flags & ACPI_GPE_DISPATCH_MASK) == ACPI_GPE_DISPATCH_HANDLER) { Status = AE_ALREADY_EXISTS; goto free_and_exit; } ... Handler->original_flags = (u8) (gpe_event_info->Flags & (ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK)); We need to clean this up before modifying the GPE dispatcher type values. In order to prevent such issue from happening in the future, this patch introduces ACPI_GPE_DISPATCH_TYPE() macro to be used to obtain the GPE dispatcher types. Lv Zheng. Link: https://github.com/acpica/acpica/commit/7926d5ca Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | ACPICA: Resources: Provide common part for struct acpi_resource_address ↵Lv Zheng2015-01-261-16/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | structures. struct acpi_resource_address and struct acpi_resource_extended_address64 share substracts just at different offsets. To unify the parsing functions, OSPMs like Linux need a new ACPI_ADDRESS64_ATTRIBUTE as their substructs, so they can extract the shared data. This patch also synchronizes the structure changes to the Linux kernel. The usages are searched by matching the following keywords: 1. acpi_resource_address 2. acpi_resource_extended_address 3. ACPI_RESOURCE_TYPE_ADDRESS 4. ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS And we found and fixed the usages in the following files: arch/ia64/kernel/acpi-ext.c arch/ia64/pci/pci.c arch/x86/pci/acpi.c arch/x86/pci/mmconfig-shared.c drivers/xen/xen-acpi-memhotplug.c drivers/acpi/acpi_memhotplug.c drivers/acpi/pci_root.c drivers/acpi/resource.c drivers/char/hpet.c drivers/pnp/pnpacpi/rsparser.c drivers/hv/vmbus_drv.c Build tests are passed with defconfig/allnoconfig/allyesconfig and defconfig+CONFIG_ACPI=n. Original-by: Thomas Gleixner <tglx@linutronix.de> Original-by: Jiang Liu <jiang.liu@linux.intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | ACPI: Introduce acpi_unload_parent_table() usages in Linux kernelLv Zheng2015-01-261-6/+0
|/ | | | | | | | | | | | | | | ACPICA has implemented acpi_unload_parent_table() which can exactly replace the acpi_get_id()/acpi_unload_table_id() implemented in Linux kernel. The acpi_unload_parent_table() has been unit tested in ACPICA simulation environment. This patch can also help to reduce the source code differences between Linux and ACPICA. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Tested-by: Octavian Purdila <octavian.purdila@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPI / processor: Convert apic_id to phys_id to make it arch agnosticHanjun Guo2015-01-051-4/+4
| | | | | | | | | | | | | | | | | | | | | | | apic_id in MADT table is the CPU hardware id which identify it self in the system for x86 and ia64, OSPM will use it for SMP init to map APIC ID to logical cpu number in the early boot, when the DSDT/SSDT (ACPI namespace) is scanned later, the ACPI processor driver is probed and the driver will use acpi_id in DSDT to get the apic_id, then map to the logical cpu number which is needed by the processor driver. Before ACPI 5.0, only x86 and ia64 were supported in ACPI spec, so apic_id is used both in arch code and ACPI core which is pretty fine. Since ACPI 5.0, ARM is supported by ACPI and APIC is not available on ARM, this will confuse people when apic_id is both used by x86 and ARM in one function. So convert apic_id to phys_id (which is the original meaning) in ACPI processor dirver to make it arch agnostic, but leave the arch dependent code unchanged, no functional change. Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
*---. Merge branches 'acpi-scan', 'acpi-utils' and 'acpi-pm'Rafael J. Wysocki2014-12-181-0/+1
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * acpi-scan: ACPI / scan: Change the level of _DEP-related messages to KERN_DEBUG * acpi-utils: ACPI / utils: Drop error messages from acpi_evaluate_reference() * acpi-pm: ACPI / PM: Do not disable wakeup GPEs that have not been enabled
| | | * ACPI / PM: Do not disable wakeup GPEs that have not been enabledRafael J. Wysocki2014-12-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In some cases acpi_device_wakeup() may be called to ensure wakeup power to be off for a given device even though that device's wakeup GPE has not been enabled so far. It calls acpi_disable_gpe() on a GPE that's not enabled and this causes ACPICA to return the AE_LIMIT status code from that call which then is reported as an error by the ACPICA's debug facilities (if enabled). This may lead to a fair amount of confusion, so introduce a new ACPI device wakeup flag to store the wakeup GPE status and avoid disabling wakeup GPEs that have not been enabled. Reported-and-tested-by: Venkat Raghavulu <venkat.raghavulu@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | | | Merge branch 'pm-runtime'Rafael J. Wysocki2014-12-081-5/+1
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * pm-runtime: (25 commits) i2c-omap / PM: Drop CONFIG_PM_RUNTIME from i2c-omap.c dmaengine / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM drivers: sh / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM e1000e / igb / PM: Eliminate CONFIG_PM_RUNTIME MMC / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM MFD / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM misc / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM media / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM input / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM iio / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM hsi / OMAP / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM i2c-hid / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM drm / exynos / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM gpio / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM hwrandom / exynos / PM: Use CONFIG_PM in #ifdef block / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM USB / PM: Drop CONFIG_PM_RUNTIME from the USB core PM: Merge the SET*_RUNTIME_PM_OPS() macros PM / Kconfig: Do not select PM directly from Kconfig files PCI / PM: Drop CONFIG_PM_RUNTIME from the PCI core ...
| * | | | ACPI / PM: Drop CONFIG_PM_RUNTIME from the ACPI coreRafael J. Wysocki2014-12-041-5/+1
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After commit b2b49ccbdd54 (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is selected) PM_RUNTIME is always set if PM is set, so quite a few depend on CONFIG_PM. Replace CONFIG_PM_RUNTIME with CONFIG_PM in the ACPI core code. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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*-----. \ \ \ Merge branches 'acpi-scan', 'acpi-pm', 'acpi-lpss' and 'acpi-processor'Rafael J. Wysocki2014-12-082-4/+4
|\ \ \ \ \ \ \ | | | | |/ / / | | | |/| / / | | |_|_|/ / | |/| | | / | | | |_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * acpi-scan: ACPI: Add _DEP support to fix battery issue on Asus T100TA * acpi-pm: ACPI / sleep: Drain outstanding events after disabling multiple GPEs ACPI / PM: Fixed a typo in a comment * acpi-lpss: dmaengine: dw: enable runtime PM ACPI / LPSS: introduce a 'proxy' device to power on LPSS for DMA ACPI / LPSS: allow to use specific PM domain during ->probe() ACPI / LPSS: add all LPSS devices to the specific power domain * acpi-processor: ACPI / cpuidle: avoid assigning signed errno to acpi_status ACPI / processor: remove unused variabled from acpi_processor_power structure ACPI / processor: Update the comments in processor.h
| | | | * ACPI / processor: remove unused variabled from acpi_processor_power structureSudeep Holla2014-11-251-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Few elements in the acpi_processor_power structure are unused. It could be remnant in the header missed while the code got removed from the corresponding driver file. This patch removes those unused variables in the structure declaration. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | | | * ACPI / processor: Update the comments in processor.hHanjun Guo2014-11-111-1/+3
| | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In commit 46ba51e (ACPI / processor: Introduce ARCH_MIGHT_HAVE_ACPI_PDC), acpi_processor_set_pdc() was moved to processor_pdc.c, so update the comments accordingly. Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * | | ACPI: Add _DEP support to fix battery issue on Asus T100TALan Tianyu2014-11-241-0/+1
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ACPI 5.0 introduces _DEP (Operation Region Dependencies) to designate device objects that OSPM should assign a higher priority in start ordering due to future operation region accesses. On Asus T100TA, ACPI battery info are read from a I2C slave device via I2C operation region. Before I2C operation region handler is installed, battery _STA always returns 0. There is a _DEP method of designating start order under battery device node. This patch is to implement _DEP feature to fix battery issue on the Asus T100TA. Introducing acpi_dep_list and adding dep_unmet count in struct acpi_device. During ACPI namespace scan, create struct acpi_dep_data for a valid pair of master (device pointed to by _DEP)/ slave(device with _DEP), record master's and slave's ACPI handle in it and put it into acpi_dep_list. The dep_unmet count will increase by one if there is a device under its _DEP. Driver's probe() should return EPROBE_DEFER when find dep_unmet is larger than 0. When I2C operation region handler is installed, remove all struct acpi_dep_data on the acpi_dep_list whose master is pointed to I2C host controller and decrease slave's dep_unmet. When dep_unmet decreases to 0, all _DEP conditions are met and then do acpi_bus_attach() for the device in order to resolve battery _STA issue on the Asus T100TA. Link: https://bugzilla.kernel.org/show_bug.cgi?id=69011 Tested-by: Jan-Michael Brummer <jan.brummer@tabos.org> Tested-by: Adam Williamson <adamw@happyassassin.net> Tested-by: Michael Shigorin <shigorin@gmail.com> Acked-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | | Merge branch 'acpica'Rafael J. Wysocki2014-12-083-4/+16
|\ \ \ | | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | * acpica: ACPICA: Events: Always modify GPE registers under the GPE lock ACPICA: Save current masks of enabled GPEs after enable register writes ACPICA: Update version to 20141107. ACPICA: Disassembler: Emit correct string for 0 stop bits. ACPICA: Disassembler: Update for C-style expressions. ACPICA: Disassembler: Add support for C-style operators and expressions. ACPICA: acpiexec: Add option to specify an object initialization file. ACPICA: iASL: Add support for to_PLD macro.
| * | ACPICA: Save current masks of enabled GPEs after enable register writesRafael J. Wysocki2014-12-011-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a race condition between acpi_hw_disable_all_gpes() or acpi_enable_all_wakeup_gpes() and acpi_ev_asynch_enable_gpe() such that if the latter wins the race, it may mistakenly enable a GPE disabled by the former. This may lead to premature system wakeups during system suspend and potentially to more serious consequences. The source of the problem is how acpi_hw_low_set_gpe() works when passed ACPI_GPE_CONDITIONAL_ENABLE as the second argument. In that case, the GPE will be enabled if the corresponding bit is set in the enable_for_run mask of the GPE enable register containing that bit. However, acpi_hw_disable_all_gpes() and acpi_enable_all_wakeup_gpes() don't modify the enable_for_run masks of GPE registers when writing to them. In consequence, if acpi_ev_asynch_enable_gpe(), which eventually calls acpi_hw_low_set_gpe() with the second argument equal to ACPI_GPE_CONDITIONAL_ENABLE, is executed in parallel with one of these functions, it may reverse changes made by them. To fix the problem, introduce a new enable_mask field in struct acpi_gpe_register_info in which to store the current mask of enabled GPEs and modify acpi_hw_low_set_gpe() to take this mask into account instead of enable_for_run when its second argument is equal to ACPI_GPE_CONDITIONAL_ENABLE. Also modify the low-level routines called by acpi_hw_disable_all_gpes(), acpi_enable_all_wakeup_gpes() and acpi_enable_all_runtime_gpes() to update the enable_mask masks of GPE registers after all (successful) writes to those registers. Acked-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * | ACPICA: Update version to 20141107.Bob Moore2014-11-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Version 20141107. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * | ACPICA: iASL: Add support for to_PLD macro.Bob Moore2014-11-281-3/+11
| |/ | | | | | | | | | | | | | | | | | | | | This macro is intended to simplify the constuction of _PLD buffers. NOTE: Prototype only, subject to change before this macro is added to the ACPI specification. David E. Box. Signed-off-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | ACPI / GPIO: Driver GPIO mappings for ACPI GPIOsRafael J. Wysocki2014-11-041-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Provide a way for device drivers using GPIOs described by ACPI GpioIo resources in _CRS to tell the GPIO subsystem what names (connection IDs) to associate with specific GPIO pins defined in there. To do that, a driver needs to define a mapping table as a NULL-terminated array of struct acpi_gpio_mapping objects that each contain a name, a pointer to an array of line data (struct acpi_gpio_params) objects and the size of that array. Each struct acpi_gpio_params object consists of three fields, crs_entry_index, line_index, active_low, representing the index of the target GpioIo()/GpioInt() resource in _CRS starting from zero, the index of the target line in that resource starting from zero, and the active-low flag for that line, respectively. Next, the mapping table needs to be passed as the second argument to acpi_dev_add_driver_gpios() that will register it with the ACPI device object pointed to by its first argument. That should be done in the driver's .probe() routine. On removal, the driver should unregister its GPIO mapping table by calling acpi_dev_remove_driver_gpios() on the ACPI device object where that table was previously registered. Included are fixes from Mika Westerberg. Acked-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | Driver core: Unified interface for firmware node propertiesRafael J. Wysocki2014-11-041-0/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add new generic routines are provided for retrieving properties from device description objects in the platform firmware in case there are no struct device objects for them (either those objects have not been created yet or they do not exist at all). The following functions are provided: fwnode_property_present() fwnode_property_read_u8() fwnode_property_read_u16() fwnode_property_read_u32() fwnode_property_read_u64() fwnode_property_read_string() fwnode_property_read_u8_array() fwnode_property_read_u16_array() fwnode_property_read_u32_array() fwnode_property_read_u64_array() fwnode_property_read_string_array() in analogy with the corresponding functions for struct device added previously. For all of them, the first argument is a pointer to struct fwnode_handle (new type) that allows a device description object (depending on what platform firmware interface is in use) to be obtained. Add a new macro device_for_each_child_node() for iterating over the children of the device description object associated with a given device and a new function device_get_child_node_count() returning the number of a given device's child nodes. The interface covers both ACPI and Device Trees. Suggested-by: Grant Likely <grant.likely@linaro.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | ACPI: Allow drivers to match using Device Tree compatible propertyMika Westerberg2014-11-041-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We have lots of existing Device Tree enabled drivers and allocating separate _HID for each is not feasible. Instead we allocate special _HID "PRP0001" that means that the match should be done using Device Tree compatible property using driver's .of_match_table instead if the driver is missing .acpi_match_table. If there is a need to distinguish from where the device is enumerated (DT/ACPI) driver can check dev->of_node or ACPI_COMPATION(dev). Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | ACPI: Add support for device specific propertiesMika Westerberg2014-11-041-0/+7
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Device Tree is used in many embedded systems to describe the system configuration to the OS. It supports attaching properties or name-value pairs to the devices it describe. With these properties one can pass additional information to the drivers that would not be available otherwise. ACPI is another configuration mechanism (among other things) typically seen, but not limited to, x86 machines. ACPI allows passing arbitrary data from methods but there has not been mechanism equivalent to Device Tree until the introduction of _DSD in the recent publication of the ACPI 5.1 specification. In order to facilitate ACPI usage in systems where Device Tree is typically used, it would be beneficial to standardize a way to retrieve Device Tree style properties from ACPI devices, which is what we do in this patch. If a given device described in ACPI namespace wants to export properties it must implement _DSD method (Device Specific Data, introduced with ACPI 5.1) that returns the properties in a package of packages. For example: Name (_DSD, Package () { ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () { Package () {"name1", <VALUE1>}, Package () {"name2", <VALUE2>}, ... } }) The UUID reserved for properties is daffd814-6eba-4d8c-8a91-bc9bbf4aa301 and is documented in the ACPI 5.1 companion document called "_DSD Implementation Guide" [1], [2]. We add several helper functions that can be used to extract these properties and convert them to different Linux data types. The ultimate goal is that we only have one device property API that retrieves the requested properties from Device Tree or from ACPI transparent to the caller. [1] http://www.uefi.org/sites/default/files/resources/_DSD-implementation-guide-toplevel.htm [2] http://www.uefi.org/sites/default/files/resources/_DSD-device-properties-UUID.pdf Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Reviewed-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* Merge tag 'pm+acpi-3.18-rc2' of ↵Linus Torvalds2014-10-243-3/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI and power management updates from Rafael Wysocki: "This is material that didn't make it to my 3.18-rc1 pull request for various reasons, mostly related to timing and travel (LinuxCon EU / LPC) plus a couple of fixes for recent bugs. The only really new thing here is the PM QoS class for memory bandwidth, but it is simple enough and users of it will be added in the next cycle. One major change in behavior is that platform devices enumerated by ACPI will use 32-bit DMA mask by default. Also included is an ACPICA update to a new upstream release, but that's mostly cleanups, changes in tools and similar. The rest is fixes and cleanups mostly. Specifics: - Fix for a recent PCI power management change that overlooked the fact that some IRQ chips might not be able to configure PCIe PME for system wakeup from Lucas Stach. - Fix for a bug introduced in 3.17 where acpi_device_wakeup() is called with a wrong ordering of arguments from Zhang Rui. - A bunch of intel_pstate driver fixes (all -stable candidates) from Dirk Brandewie, Gabriele Mazzotta and Pali Rohár. - Fixes for a rather long-standing problem with the OOM killer and the freezer that frozen processes killed by the OOM do not actually release any memory until they are thawed, so OOM-killing them is rather pointless, with a couple of cleanups on top (Michal Hocko, Cong Wang, Rafael J Wysocki). - ACPICA update to upstream release 20140926, inlcuding mostly cleanups reducing differences between the upstream ACPICA and the kernel code, tools changes (acpidump, acpiexec) and support for the _DDN object (Bob Moore, Lv Zheng). - New PM QoS class for memory bandwidth from Tomeu Vizoso. - Default 32-bit DMA mask for platform devices enumerated by ACPI (this change is mostly needed for some drivers development in progress targeted at 3.19) from Heikki Krogerus. - ACPI EC driver cleanups, mostly related to debugging, from Lv Zheng. - cpufreq-dt driver updates from Thomas Petazzoni. - powernv cpuidle driver update from Preeti U Murthy" * tag 'pm+acpi-3.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (34 commits) intel_pstate: Correct BYT VID values. intel_pstate: Fix BYT frequency reporting intel_pstate: Don't lose sysfs settings during cpu offline cpufreq: intel_pstate: Reflect current no_turbo state correctly cpufreq: expose scaling_cur_freq sysfs file for set_policy() drivers cpufreq: intel_pstate: Fix setting max_perf_pct in performance policy PCI / PM: handle failure to enable wakeup on PCIe PME ACPI: invoke acpi_device_wakeup() with correct parameters PM / freezer: Clean up code after recent fixes PM: convert do_each_thread to for_each_process_thread OOM, PM: OOM killed task shouldn't escape PM suspend freezer: remove obsolete comments in __thaw_task() freezer: Do not freeze tasks killed by OOM killer ACPI / platform: provide default DMA mask cpuidle: powernv: Populate cpuidle state details by querying the device-tree cpufreq: cpufreq-dt: adjust message related to regulators cpufreq: cpufreq-dt: extend with platform_data cpufreq: allow driver-specific data ACPI / EC: Cleanup coding style. ACPI / EC: Refine event/query debugging messages. ...
| * ACPICA: Update version to 20140926.Bob Moore2014-10-211-1/+1
| | | | | | | | | | | | | | | | Version 20140926. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Events: Reduce source code difference for the ACPI_EVENT_FLAG_HANDLE ↵Lv Zheng2014-10-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | renaming. This patch is partial linuxized result of the following ACPICA commit: ACPICA commit: a73b66c6aa1846d055bb6390d9c9b9902f7d804d Subject: Add "has handler" flag to event/gpe status interfaces. This change adds a new flag, ACPI_EVENT_FLAGS_HAS_HANDLER to the acpi_get_event_status and acpi_get_gpe_status external interfaces. It is set if the event/gpe currently has a handler associated with it. This patch contains the code to rename ACPI_EVENT_FLAG_HANDLE to ACPI_EVENT_FLAG_HAS_HANDLER, and the corresponding updates of its usages. Link: https://github.com/acpica/acpica/commit/a73b66c6 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Events: Reduce source code difference for the ACPI_EVENT_FLAG_HANDLE ↵Lv Zheng2014-10-211-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | support. This patch is a partial linuxized result of the following ACPICA commit: ACPICA commit: a73b66c6aa1846d055bb6390d9c9b9902f7d804d Subject: Add "has handler" flag to event/gpe status interfaces. This change adds a new flag, ACPI_EVENT_FLAGS_HAS_HANDLER to the acpi_get_event_status and acpi_get_gpe_status external interfaces. It is set if the event/gpe currently has a handler associated with it. This commit back ports ACPI_EVENT_FLAG_HANDLE from Linux upstream to ACPICA, the flag along with its support code currently can only be found in the Linux upstream and is used by the ACPI sysfs GPE interfaces and the ACPI bus scanning support. Link: https://github.com/acpica/acpica/commit/a73b66c6 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Add string for _DDN method name.Bob Moore2014-10-211-0/+1
| | | | | | | | | | | | | | | | The _DDN method will be used internally. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | Merge branch 'next' of ↵Linus Torvalds2014-10-241-0/+1
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux Pull thermal management updates from Zhang Rui: "Sorry that I missed the merge window as there is a bug found in the last minute, and I have to fix it and wait for the code to be tested in linux-next tree for a few days. Now the buggy patch has been dropped entirely from my next branch. Thus I hope those changes can still be merged in 3.18-rc2 as most of them are platform thermal driver changes. Specifics: - introduce ACPI INT340X thermal drivers. Newer laptops and tablets may have thermal sensors and other devices with thermal control capabilities that are exposed for the OS to use via the ACPI INT340x device objects. Several drivers are introduced to expose the temperature information and cooling ability from these objects to user-space via the normal thermal framework. From: Lu Aaron, Lan Tianyu, Jacob Pan and Zhang Rui. - introduce a new thermal governor, which just uses a hysteresis to switch abruptly on/off a cooling device. This governor can be used to control certain fan devices that can not be throttled but just switched on or off. From: Peter Feuerer. - introduce support for some new thermal interrupt functions on i.MX6SX, in IMX thermal driver. From: Anson, Huang. - introduce tracing support on thermal framework. From: Punit Agrawal. - small fixes in OF thermal and thermal step_wise governor" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (25 commits) Thermal: int340x thermal: select ACPI fan driver Thermal: int3400_thermal: use acpi_thermal_rel parsing APIs Thermal: int340x_thermal: expose acpi thermal relationship tables Thermal: introduce int3403 thermal driver Thermal: introduce INT3402 thermal driver Thermal: move the KELVIN_TO_MILLICELSIUS macro to thermal.h ACPI / Fan: support INT3404 thermal device ACPI / Fan: add ACPI 4.0 style fan support ACPI / fan: convert to platform driver ACPI / fan: use acpi_device_xxx_power instead of acpi_bus equivelant ACPI / fan: remove no need check for device pointer ACPI / fan: remove unused macro Thermal: int3400 thermal: register to thermal framework Thermal: int3400 thermal: add capability to detect supporting UUIDs Thermal: introduce int3400 thermal driver ACPI: add ACPI_TYPE_LOCAL_REFERENCE support to acpi_extract_package() ACPI: make acpi_create_platform_device() an external API thermal: step_wise: fix: Prevent from binary overflow when trend is dropping ACPI: introduce ACPI int340x thermal scan handler thermal: Added Bang-bang thermal governor ...
| * ACPI / fan: use acpi_device_xxx_power instead of acpi_bus equivelantAaron Lu2014-10-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | When we have the acpi_device pointer, there is no need to pass the device's handle to the acpi_bus_xxx_power functions to get/set/update the device's power state, instead, use the acpi_device_xxx_power functions directly. To make this happen for fan module, export acpi_device_update_power. Signed-off-by: Aaron Lu <aaron.lu@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* | ACPICA: Introduce acpi_enable_all_wakeup_gpes()Rafael J. Wysocki2014-09-301-0/+1
| | | | | | | | | | | | | | | | | | | | Add a routine for host OSes to enable all wakeup GPEs and disable all of the non-wakeup ones at the same time. It will be used for the handling of GPE wakeup from suspend-to-idle in Linux. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | Merge back earlier 'acpica' material for v3.18.Rafael J. Wysocki2014-09-294-5/+29
|\ \
| * | ACPICA: Update version to 20140828.Bob Moore2014-09-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Version 20140828. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * | ACPICA: Headers: Add GTDT flag definitions for the timer subtable.Hanjun Guo2014-09-031-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | Mostly by Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * | ACPICA: ACPI 5.1/Disassembler: Add GICC affinity subtable to SRAT table.Hanjun Guo2014-09-031-2/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update template for SRAT. Add clock_domain to standard CPU affinity subtable. Mostly by Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * | ACPICA: Add _PSx names to the METHOD_NAME list.Bob Moore2014-09-031-0/+4
| |/ | | | | | | | | | | | | | | Will be used by iASL. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | Merge branches 'acpi-hotplug', 'acpi-scan', 'acpi-lpss', 'acpi-gpio' and ↵Rafael J. Wysocki2014-09-251-3/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'acpi-video' * acpi-hotplug: ACPI / hotplug: Generate online uevents for ACPI containers * acpi-scan: ACPI / scan: Correct error return value of create_modalias() * acpi-lpss: ACPI / platform / LPSS: disable async suspend/resume of LPSS devices * acpi-gpio: gpio / ACPI: Use pin index and bit length ACPICA: Update to GPIO region handler interface. * acpi-video: ACPI / video: disable native backlight for ThinkPad X201s
| * \ Merge tag 'pci-v3.17-fixes-2' of ↵Linus Torvalds2014-09-191-3/+1
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI fixes from Bjorn Helgaas: "These fix: - Boot video device detection on dual-GPU Apple systems - Hotplug fiascos on VGA switcheroo with radeon & nouveau drivers - Boot hang on Freescale i.MX6 systems - Excessive "no hotplug settings from platform" warnings In particular: Enumeration - Don't default exclusively to first video device (Bruno Prémont) PCI device hotplug - Remove "no hotplug settings from platform" warning (Bjorn Helgaas) - Add pci_ignore_hotplug() for VGA switcheroo (Bjorn Helgaas) Freescale i.MX6 - Put LTSSM in "Detect" state before disabling (Lucas Stach)" * tag 'pci-v3.17-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: vgaarb: Drop obsolete #ifndef vgaarb: Don't default exclusively to first video device with mem+io ACPIPHP / radeon / nouveau: Remove acpi_bus_no_hotplug() PCI: Remove "no hotplug settings from platform" warning PCI: Add pci_ignore_hotplug() to ignore hotplug events for a device PCI: imx6: Put LTSSM in "Detect" state before disabling it MAINTAINERS: Add Lucas Stach as co-maintainer for i.MX6 PCI driver
| | * | ACPIPHP / radeon / nouveau: Remove acpi_bus_no_hotplug()Bjorn Helgaas2014-09-151-3/+1
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Revert parts of f244d8b623da ("ACPIPHP / radeon / nouveau: Fix VGA switcheroo problem related to hotplug"). A previous commit 5493b31f0b55 ("PCI: Add pci_ignore_hotplug() to ignore hotplug events for a device") added equivalent functionality implemented in a different way for both acpiphp and pciehp. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Dave Airlie <airlied@redhat.com> Acked-by: Rajat Jain <rajatxjain@gmail.com>
* | | ACPI / hotplug: Generate online uevents for ACPI containersRafael J. Wysocki2014-09-211-0/+1
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 46394fd01 (ACPI / hotplug: Move container-specific code out of the core) removed the generation of "online" uevents for containers, because "add" uevents are now generated for them automatically when container system devices are registered. However, there are user space tools that need to be notified when the container and all of its children have been enumerated, which doesn't happen any more. For this reason, add a mechanism allowing "online" uevents to be generated for ACPI containers after enumerating the container along with all of its children. Fixes: 46394fd01 (ACPI / hotplug: Move container-specific code out of the core) Reported-and-tested-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: 3.14+ <stable@vger.kernel.org> # 3.14+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | ACPI / scan: not cache _SUN value in struct acpi_device_pnpYasuaki Ishimatsu2014-09-031-1/+0
|/ | | | | | | | | | | | | | | | | The _SUN device indentification object is not guaranteed to return the same value every time it is executed, so we should not cache its return value, but rather execute it every time as needed. If it is cached, an incorrect stale value may be used in some situations. This issue was exposed by commit 202317a573b2 (ACPI / scan: Add acpi_device objects for all device nodes in the namespace). Fix it by avoiding to cache the return value of _SUN. Fixes: 202317a573b2 (ACPI / scan: Add acpi_device objects for all device nodes in the namespace) Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: 3.14+ <stable@vger.kernel.org> # 3.14+ [ rjw: Changelog ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* Merge tag 'pm+acpi-3.17-rc1' of ↵Linus Torvalds2014-08-0614-89/+367
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI and power management updates from Rafael Wysocki: "Again, ACPICA leads the pack (47 commits), followed by cpufreq (18 commits) and system suspend/hibernation (9 commits). From the new code perspective, the ACPICA update brings ACPI 5.1 to the table, including a new device configuration object called _DSD (Device Specific Data) that will hopefully help us to operate device properties like Device Trees do (at least to some extent) and changes related to supporting ACPI on ARM. Apart from that we have hibernation changes making it use radix trees to store memory bitmaps which should speed up some operations carried out by it quite significantly. We also have some power management changes related to suspend-to-idle (the "freeze" sleep state) support and more preliminary changes needed to support ACPI on ARM (outside of ACPICA). The rest is fixes and cleanups pretty much everywhere. Specifics: - ACPICA update to upstream version 20140724. That includes ACPI 5.1 material (support for the _CCA and _DSD predefined names, changes related to the DMAR and PCCT tables and ARM support among other things) and cleanups related to using ACPICA's header files. A major part of it is related to acpidump and the core code used by that utility. Changes from Bob Moore, David E Box, Lv Zheng, Sascha Wildner, Tomasz Nowicki, Hanjun Guo. - Radix trees for memory bitmaps used by the hibernation core from Joerg Roedel. - Support for waking up the system from suspend-to-idle (also known as the "freeze" sleep state) using ACPI-based PCI wakeup signaling (Rafael J Wysocki). - Fixes for issues related to ACPI button events (Rafael J Wysocki). - New device ID for an ACPI-enumerated device included into the Wildcat Point PCH from Jie Yang. - ACPI video updates related to backlight handling from Hans de Goede and Linus Torvalds. - Preliminary changes needed to support ACPI on ARM from Hanjun Guo and Graeme Gregory. - ACPI PNP core cleanups from Arjun Sreedharan and Zhang Rui. - Cleanups related to ACPI_COMPANION() and ACPI_HANDLE() macros (Rafael J Wysocki). - ACPI-based device hotplug cleanups from Wei Yongjun and Rafael J Wysocki. - Cleanups and improvements related to system suspend from Lan Tianyu, Randy Dunlap and Rafael J Wysocki. - ACPI battery cleanup from Wei Yongjun. - cpufreq core fixes from Viresh Kumar. - Elimination of a deadband effect from the cpufreq ondemand governor and intel_pstate driver cleanups from Stratos Karafotis. - 350MHz CPU support for the powernow-k6 cpufreq driver from Mikulas Patocka. - Fix for the imx6 cpufreq driver from Anson Huang. - cpuidle core and governor cleanups from Daniel Lezcano, Sandeep Tripathy and Mohammad Merajul Islam Molla. - Build fix for the big_little cpuidle driver from Sachin Kamat. - Configuration fix for the Operation Performance Points (OPP) framework from Mark Brown. - APM cleanup from Jean Delvare. - cpupower utility fixes and cleanups from Peter Senna Tschudin, Andrey Utkin, Himangi Saraogi, Rickard Strandqvist, Thomas Renninger" * tag 'pm+acpi-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (118 commits) ACPI / LPSS: add LPSS device for Wildcat Point PCH ACPI / PNP: Replace faulty is_hex_digit() by isxdigit() ACPICA: Update version to 20140724. ACPICA: ACPI 5.1: Update for PCCT table changes. ACPICA/ARM: ACPI 5.1: Update for GTDT table changes. ACPICA/ARM: ACPI 5.1: Update for MADT changes. ACPICA/ARM: ACPI 5.1: Update for FADT changes. ACPICA: ACPI 5.1: Support for the _CCA predifined name. ACPICA: ACPI 5.1: New notify value for System Affinity Update. ACPICA: ACPI 5.1: Support for the _DSD predefined name. ACPICA: Debug object: Add current value of Timer() to debug line prefix. ACPICA: acpihelp: Add UUID support, restructure some existing files. ACPICA: Utilities: Fix local printf issue. ACPICA: Tables: Update for DMAR table changes. ACPICA: Remove some extraneous printf arguments. ACPICA: Update for comments/formatting. No functional changes. ACPICA: Disassembler: Add support for the ToUUID opererator (macro). ACPICA: Remove a redundant cast to acpi_size for ACPI_OFFSET() macro. ACPICA: Work around an ancient GCC bug. ACPI / processor: Make it possible to get local x2apic id via _MAT ...
| * Merge branch 'acpica'Rafael J. Wysocki2014-08-058-32/+182
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * acpica: ACPICA: Update version to 20140724. ACPICA: ACPI 5.1: Update for PCCT table changes. ACPICA/ARM: ACPI 5.1: Update for GTDT table changes. ACPICA/ARM: ACPI 5.1: Update for MADT changes. ACPICA/ARM: ACPI 5.1: Update for FADT changes. ACPICA: ACPI 5.1: Support for the _CCA predifined name. ACPICA: ACPI 5.1: New notify value for System Affinity Update. ACPICA: ACPI 5.1: Support for the _DSD predefined name. ACPICA: Debug object: Add current value of Timer() to debug line prefix. ACPICA: acpihelp: Add UUID support, restructure some existing files. ACPICA: Utilities: Fix local printf issue. ACPICA: Tables: Update for DMAR table changes. ACPICA: Remove some extraneous printf arguments. ACPICA: Update for comments/formatting. No functional changes. ACPICA: Disassembler: Add support for the ToUUID opererator (macro). ACPICA: Remove a redundant cast to acpi_size for ACPI_OFFSET() macro. ACPICA: Work around an ancient GCC bug.
| | * ACPICA: Update version to 20140724.Bob Moore2014-07-311-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Version 20140724. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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