25 Oct, 2014
2 commits
-
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.
... -
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
...
21 Oct, 2014
4 commits
-
Version 20140926.
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki -
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
Signed-off-by: Bob Moore
Signed-off-by: Rafael J. Wysocki -
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
Signed-off-by: Bob Moore
Signed-off-by: Rafael J. Wysocki -
The _DDN method will be used internally.
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki
10 Oct, 2014
1 commit
-
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
Signed-off-by: Zhang Rui
01 Oct, 2014
1 commit
-
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
29 Sep, 2014
1 commit
26 Sep, 2014
1 commit
-
* 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
21 Sep, 2014
1 commit
-
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
Cc: 3.14+ # 3.14+
Signed-off-by: Rafael J. Wysocki
20 Sep, 2014
1 commit
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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" warningsIn 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
16 Sep, 2014
1 commit
-
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
Acked-by: Alex Deucher
Acked-by: Rafael J. Wysocki
Acked-by: Dave Airlie
Acked-by: Rajat Jain
04 Sep, 2014
1 commit
-
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
Cc: 3.14+ # 3.14+
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki
03 Sep, 2014
4 commits
-
Version 20140828.
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki -
Mostly by Hanjun Guo
Signed-off-by: Hanjun Guo
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki -
Update template for SRAT.
Add clock_domain to standard CPU affinity subtable.Mostly by Hanjun Guo
Signed-off-by: Hanjun Guo
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki -
Will be used by iASL.
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki
07 Aug, 2014
1 commit
-
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
...
06 Aug, 2014
1 commit
-
* 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.
31 Jul, 2014
10 commits
-
Version 20140724.
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki -
One new subtable.
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki -
New fields and new subtables. Tomasz Nowicki.
Signed-off-by: Tomasz Nowicki
Signed-off-by: Hanjun Guo
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki -
New subtables and changes to other subtables. Tomasz Nowicki.
Signed-off-by: Tomasz Nowicki
Signed-off-by: Hanjun Guo
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki -
Adds ARM flags and FADT minor revision. Graeme Gregory.
Signed-off-by: Graeme Gregory
Signed-off-by: Hanjun Guo
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki -
New value for the Notify() operator.
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki -
Adds full support for _DSD. David Box.
Signed-off-by: David E. Box
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki -
Update table compiler and disassembler for new DMAR fields introduced
in Sept. 2013.Note that Linux DMAR users need to be updated after applying this change.
[zetalog: changing drivers/iommu/dmar.c accordingly]
Cc: David Woodhouse
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki -
This change adds support to disassemble a UUID back to the original
ToUUID operator. It will detect a UUID within a standard AML Buffer.
Also, a description of the UUID is emitted for "known" UUIDs, defined
as UUIDs that are defined in the ACPI specification.Since this is a change for disassembler which is not shipped in the
Linux kernel, the Linux kernel is not affected.Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki -
It is already casted to acpi_size by ACPI_PTR_DIFF() macro.
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki
28 Jul, 2014
5 commits
-
* acpi-video:
ACPI: move models with win8 brightness problems from win8 blacklist to use_native_backlight
ACPI / video: Fix backlight taking 2 steps on a brightness up/down keypress* acpi-hotplug:
ACPI / hotplug / PCI: Fix sparse non static symbol warning
ACPI / hotplug: Simplify acpi_set_hp_context()
ACPI / hotplug / PCI: Eliminate acpiphp_dev_to_bridge() -
* acpi-pnp:
ACPI / PNP: Use ACPI_COMPANION() instead of ACPI_HANDLE()
ACPI / PNP: do ACPI binding directly* acpi-pci:
ACPI / PCI: Use ACPI_COMPANION() instead of ACPI_HANDLE() -
* acpi-pm:
ACPI / PM: Use ACPI_COMPANION() instead of ACPI_HANDLE()
ACPI / PM: Always enable wakeup GPEs when enabling device wakeup
ACPI / PM: Revork the handling of ACPI device wakeup notifications
PM: Create PM workqueue if runtime PM is not configured too* acpi-sleep:
ACPI / sleep: Do not save NVS for new machines to accelerate S3* acpi-button:
ACPI / button: Do not propagate wakeup-from-suspend events -
* acpi-headers:
ACPI: Add support to force header inclusion rules for .
ACPI / SFI: Fix wrong inclusion in SFI/ACPI wrapper - table definitions.
ACPICA: Linux: Allow ACPICA inclusion for CONFIG_ACPI=n builds.
ACPICA: Linux: Add support to exclude inclusion.
ACPICA: Linux: Add stub implementation of ACPICA 64-bit mathematics.
ACPICA: Linux: Add stub support for Linux specific variables and functions. -
* acpica: (30 commits)
ACPICA: Add new GPE public interface - acpi_mark_gpe_for_wake.
ACPICA: GPEs: Do not allow enable for GPEs that have no handler(s).
ACPICA: Fix a regression for deletion of Alias() objects.
ACPICA: Update version to 20140627
ACPICA: Tables: Merge DMAR table structure updates
ACPICA: Hardware: back port of a recursive locking fix
ACPICA: utprint/oslibcfs: cleanup - no functional change
ACPICA: Executer: Fix trivial issues in acpi_get_serial_access_bytes()
ACPICA: OSL: Update acpidump to reduce source code differences
ACPICA: acpidump: Reduce freopen() invocations to improve portability
ACPICA: acpidump: Replace file IOs with new APIs to improve portability
ACPICA: acpidump: Remove exit() from generic layer to improve portability
ACPICA: acpidump: Add memory/string OSL usage to improve portability
ACPICA: Common: Enhance acpi_getopt() to improve portability
ACPICA: Common: Enhance cm_get_file_size() to improve portability
ACPICA: Application: Enhance ACPI_USAGE_xxx/ACPI_OPTION with acpi_os_printf() to improve portability
ACPICA: Utilities: Introduce acpi_log_error() to improve portability
ACPICA: Utilities: Add formatted printing APIs
ACPICA: OSL: Add portable file IO to improve portability
ACPICA: OSL: Clean up acpi_os_printf()/acpi_os_vprintf() stubs
...
24 Jul, 2014
1 commit
-
ACPICA commit c49dbfed2bc069d0038ea7e1294409bfde7c2c8c
Some potential callers of acpi_setup_gpe_for_wake may know in advance that
there won't be any notify handlers installed for device wake notifications
from the given GPE (one example is a button GPE in Linux). For these cases,
acpi_mark_gpe_for_wake should be used instead of acpi_setup_gpe_for_wake.
This will set the ACPI_GPE_CAN_WAKE flag for the GPE without trying to
setup implicit wake notification for it (since there's no handler method).
Rafael Wysocki.Signed-off-by: Rafael J. Wysocki
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
23 Jul, 2014
4 commits
-
As there is only CONFIG_ACPI=n processing in the , it is not
safe to include directly for source out of Linux ACPI
subsystems.This patch adds error messaging to warn developers of such wrong
inclusions.In order not to be bisected and reverted as a wrong commit, warning
messages are carefully split into a seperate patch other than the wrong
inclusion cleanups.Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki -
The forthcoming patch will make to be visible to all kernel
source code. Thus for the architectures that do not support ACPI and
haven't implemented , we need to make it excluded.Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki -
This patch adds default 64-bit mathematics in aclinux.h using do_div(). As
do_div() can be used for all Linux architectures, this can also be used as
stub macros for ACPICA 64-bit mathematics.These macros are required by drivers/acpi/utmath.c when ACPI_USE_NATIVE_DIVIDE
is not defined. It is used by ACPICA, so currently this is only meaningful to
CONFIG_ACPI builds. So the kernel will not use these macros unless CONFIG_ACPI
is defined and ACPI_USE_DIVIDE is not defined.For 64-bit kernels:
In include/acpi/actypes.h, for ACPI_MACHINE_WIDTH=64,
ACPI_USE_NATIVE_DIVIDE will be defined, thus these macros are not used.
In include/acpi/platform/aclinux.h, for __KERNEL__ surrounded code,
ACPI_MACHINE_WIDTH is defined to be BITS_PER_LONG.
So all 64-bit kernels do not use these macros.For 32-bit kernels:
As mentioned above, these macros will be used when BITS_PER_LONG is 32.
Thus currently the i328 kernels are the only users for these macros.
But they won't use this default implementation provided by this patch,
because in arch/x86/include/asm/acenv.h, there are already overrides
implemented. So these default macros are not used by 32-bit x86 (i386)
kernels.These macros will only be used by future non x86 32-bit architectures
that try to support ACPI in Linux kernel.During the period they do not have arch specific implementations of such
macros, we can avoid build errors for them.And since they can see ACPICA functioning without implementing any arch
specific environment tunings, we can also avoid function errors for
them.As this implementation is not performance friendly, those architectures
still need to implement real support in the end.Signed-off-by: Lv Zheng
[rjw: Changelog]
Signed-off-by: Rafael J. Wysocki -
Wakeup GPEs are currently only enabled when setting up devices for
remote wakeup at run time. During system-wide transitions they are
enabled by ACPICA at the very last stage of suspend (before asking
the BIOS to take over). Of course, that only works for system
sleep states supported by ACPI, so in particular it doesn't work
for the "freeze" sleep state.For this reason, modify the ACPI core device PM code to enable wakeup
GPEs for devices when setting them up for wakeup regardless of whether
that is remote wakeup at runtime or system wakeup. That allows the
same device wakeup setup routine to be used for both runtime PM and
system-wide PM and makes it possible to reduce code size quite a bit.This make ACPI-based PCI Wake-on-LAN work with the "freeze" sleep
state on my venerable Toshiba Portege R500 and should help other
systems too.Signed-off-by: Rafael J. Wysocki