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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull device property updates from Rafael J. Wysocki:
"Generic device properties framework updates for v4.11-rc1
Allow built-in (static) device properties to be declared as constant,
make it possible to save memory by discarding alternative (but unused)
built-in (static) property sets and add support for automatic handling
of built-in properties to the I2C code"
* tag 'device-properties-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
i2c: allow specify device properties in i2c_board_info
device property: export code duplicating array of property entries
device property: constify property arrays values
device property: allow to constify properties
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With many drivers converting to using generic device properties, it is
useful to provide array of device properties when instantiating new i2c
client via i2c_board_info and have them automatically added to the device
in question.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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When augmenting ACPI-enumerated devices with additional property data based
on DMI info, a module has often several potential property sets, with only
one being active on a given box. In order to save memory it should be
possible to mark everything and __initdata or __initconst, execute DMI
match early, and duplicate relevant properties. Then kernel will discard
the rest of them.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Data that is fed into property arrays should not be modified, so let's mark
relevant pointers as const. This will allow us making source arrays as
const/__initconst.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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There is no reason why statically defined properties should be modifiable,
so let's make device_add_properties() and the rest of pset_*() functions to
take const pointers to properties.
This will allow us to mark properties as const/__initconst at definition
sites.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"These update the ACPICA code in the kernel to upstream revision
20170119, which among other things updates copyright notices in all of
the ACPICA files, fix a couple of issues in the ACPI EC and button
drivers, fix modalias handling for non-discoverable devices with
DT-compatible identification strings, add a suspend quirk for one
platform and fix a message in the APEI code.
Specifics:
- Update of the ACPICA code in the kernel to upstream revision
20170119 including:
+ Fixes related to the handling of the bit width and bit offset
fields in Generic Address Structure (Lv Zheng)
+ ACPI resources handling fix related to invalid resource
descriptors (Bob Moore)
+ Fix to enable implicit result conversion for several ASL library
functions (Bob Moore)
+ Support for method invocations as target operands in AML (Bob
Moore)
+ Fix to use a correct operand type for DeRefOf() in some
situations (Bob Moore)
+ Utilities updates (Bob Moore, Lv Zheng)
+ Disassembler/debugger updates (David Box, Lv Zheng)
+ Build fixes (Colin Ian King, Lv Zheng)
+ Update of copyright notices in all files (Bob Moore)
- Fix for modalias handling for SPI and I2C devices with
DT-compatible identification strings (Dan O'Donovan)
- Fixes for the ACPI EC and button drivers (Lv Zheng)
- ACPI processor handling fix related to CPU hotplug (online/offline)
on x86 (Vitaly Kuznetsov)
- Suspend quirk to save/restore NVS memory over S3 transitions for
Lenovo G50-45 (Zhang Rui)
- Message formatting fix for the ACPI APEI code (Colin Ian King)"
* tag 'acpi-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits)
ACPICA: Update version to 20170119
ACPICA: Tools: Update common signon, remove compilation bit width
ACPICA: Source tree: Update copyright notices to 2017
ACPICA: Linuxize: Restore and fix Intel compiler build
x86/ACPI: keep x86_cpu_to_acpiid mapping valid on CPU hotplug
spi: acpi: Initialize modalias from of_compatible
i2c: acpi: Initialize info.type from of_compatible
ACPI / bus: Introduce acpi_of_modalias() equiv of of_modalias_node()
ACPI: save NVS memory for Lenovo G50-45
ACPI, APEI, EINJ: fix malformed newline escape
ACPI / button: Remove lid_init_state=method mode
ACPI / button: Change default behavior to lid_init_state=open
ACPI / EC: Use busy polling mode when GPE is not enabled
ACPI / EC: Remove old CLEAR_ON_RESUME quirk
ACPICA: Update version to 20161222
ACPICA: Parser: Update parse info table for some operators
ACPICA: Fix a problem with recent extra support for control method invocations
ACPICA: Parser: Allow method invocations as target operands
ACPICA: Fix for implicit result conversion for the ToXXX functions
ACPICA: Resources: Not a valid resource if buffer length too long
..
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* acpi-ec:
ACPI / EC: Use busy polling mode when GPE is not enabled
ACPI / EC: Remove old CLEAR_ON_RESUME quirk
* acpi-button:
ACPI / button: Remove lid_init_state=method mode
ACPI / button: Change default behavior to lid_init_state=open
* acpi-apei:
ACPI, APEI, EINJ: fix malformed newline escape
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The pr_warn message has a malformed newline escape, add in the
missing \
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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The mode is buggy, and lid_init__state=open is more useful than this
mode, so this patch makes it deprecated.
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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More and more platforms need the button.lid_init_state=open quirk. This
patch sets it the default behavior.
If a platform doesn't send lid open event or lid open event is lost due to
the underlying system problems, then we can compare various combinations:
1. systemd/acpid is used to suspend system or not, systemd has a special
logic forcing open event after resuming;
2. _LID returns a cached value or not.
The result is as follows:
1. lid_init_state=method
1. cached
1. resumed by lid:
(x) event=close
(x) systemd=suspends again
(x) acpid=suspends again
(x) state=close
2. resumed by other:
(o) event=close
(x) systemd=suspends again
(x) acpid=suspends again
(o) state=close
2. non-cached
1. resumed by lid:
(o) event=open
(o) systemd=resumes
(o) acpid=resumes
(o) state=open
2. resumed by other:
(o) event=close
(x) systemd=suspends again
(x) acpid=suspends again
(o) state=close
2. lid_init_state=open
1. cached
1. resumed by lid:
(o) event=open
(o) systemd=resumes
(o) acpid=resumes
(x) state=close
2. resumed by other:
(x) event=open
(o) systemd=resumes
(o) acpid=resumes
(o) state=close
2. non-cached
1. resumed by lid:
(o) event=open
(o) systemd=resumes
(o) acpid=resumes
(o) state=open
2. resumed by other:
(x) event=open
(o) systemd=resumes
(o) acpid=resumes
(o) state=close
3. lid_init_state=ignore
1. cached
1. resumed by lid:
(o) event=none
(x) systemd=suspends again
(o) acpid=resumes
(x) state=close
2. resumed by other:
(o) event=none
(x) systemd=suspends again
(o) acpid=resumes
(o) state=close
2. non-cached
1. resumed by lid:
(o) event=none
(x) systemd=suspends again
(o) acpid=resumes
(o) state=open
2. resumed by other:
(o) event=none
(x) systemd=suspends again
(o) acpid=resumes
(o) state=close
As a conclusion:
1. With systemd changed, lid_init_state=ignore has only one problem and the
problem comes from an underlying issue, not userspace and kernel lid
handling.
2. Without systemd changed, lid_init_state=open can be the default
behavior as the pass ratio is not much worse than lid_init_state=ignore.
3. lid_init_state=method is buggy, we can have a separate patch to make it
deprectated.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=187271
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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When GPE is not enabled, it is not efficient to use the wait polling mode
as it introduces an unexpected scheduler delay.
So before the GPE handler is installed, this patch uses busy polling mode
for all EC(s) and the logic can be applied to non boot EC(s) during the
suspend/resume process.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=191561
Tested-by: Jakobus Schurz <jakobus.schurz@gmail.com>
Tested-by: Chen Yu <yu.c.chen@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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IRQ polling logic has been implemented to drain the post-boot/resume
EC events:
1. Triggered by the following code, invoked from acpi_ec_enable_event():
if (!test_bit(EC_FLAGS_QUERY_PENDING, &ec->flags))
advance_transaction(ec);
2. Drained by the following code, invoked after acpi_ec_complete_query():
if (status & ACPI_EC_FLAG_SCI)
acpi_ec_submit_query(ec);
This facility is safer than the old CLEAR_ON_RESUME quirk as the
CLEAR_ON_RESUME quirk sends EC query commands unconditionally. The
behavior is apparently not suitable for firmware that requires
QUERY_HANDSHAKE quirk. Though the QUERY_HANDSHAKE quirk isn't used
now because of the improvement done in the EC transaction state
machine (ec_event_clearing=QUERY), it is the proof that we cannot
send EC query command unconditionally.
So it's time to delete the out-dated CLEAR_ON_RESUME quirk to let the
users to try the newer approach.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=191211
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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* acpi-bus:
spi: acpi: Initialize modalias from of_compatible
i2c: acpi: Initialize info.type from of_compatible
ACPI / bus: Introduce acpi_of_modalias() equiv of of_modalias_node()
* acpi-sleep:
ACPI: save NVS memory for Lenovo G50-45
* acpi-processor:
x86/ACPI: keep x86_cpu_to_acpiid mapping valid on CPU hotplug
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We may or may not have all possible CPUs in MADT on boot but in any
case we're overwriting x86_cpu_to_acpiid mapping with U32_MAX when
acpi_register_lapic() is called again on the CPU hotplug path:
acpi_processor_hotadd_init()
-> acpi_map_cpu()
-> acpi_register_lapic()
As we have the required acpi_id information in acpi_processor_hotadd_init()
propagate it to acpi_map_cpu() to always keep x86_cpu_to_acpiid
mapping valid.
Reported-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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In commit 821d6f0359b0 (ACPI / sleep: Do not save NVS for new machines to
accelerate S3), to optimize S3 suspend/resume speed, code is introduced
to ignore NVS memory saving during S3 for all the platforms later than
2012.
But, Lenovo G50-45, a platform released in 2015, still needs NVS memory
saving during S3. A quirk is introduced for this platform.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=189431
Tested-by: Przemek <soprwa@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
[ rjw: Drop unnecessary code ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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When using devicetree spi_device.modalias is set to the compatible
string with the vendor prefix removed. For SPI devices described via
ACPI the spi_device.modalias string is initialized by acpi_device_hid.
When using ACPI and DT ids this string ends up something like "PRP0001".
Change acpi_register_spi_device to use the of_compatible property if
present. This makes it easier to instantiate spi drivers through ACPI
with DT ids.
Signed-off-by: Dan O'Donovan <dan@emutex.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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When using devicetree i2c_board_info.type is set to the compatible
string with the vendor prefix removed. For I2C devices described via
ACPI the i2c_board_info.type string is set to the ACPI device name. When
using ACPI and DT ids this string ends up something like "PRP0001:00".
If the of_compatible property is present try to use that instead. This
makes it easier to instantiate i2c drivers through ACPI with DT ids.
Signed-off-by: Dan O'Donovan <dan@emutex.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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When using devicetree stuff like i2c_client.name or spi_device.modalias
is initialized to the first DT compatible id with the vendor prefix
stripped. Since some drivers rely on this try to replicate it when using
ACPI with DT ids.
Signed-off-by: Dan O'Donovan <dan@emutex.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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* acpica: (22 commits)
ACPICA: Update version to 20170119
ACPICA: Tools: Update common signon, remove compilation bit width
ACPICA: Source tree: Update copyright notices to 2017
ACPICA: Linuxize: Restore and fix Intel compiler build
ACPICA: Update version to 20161222
ACPICA: Parser: Update parse info table for some operators
ACPICA: Fix a problem with recent extra support for control method invocations
ACPICA: Parser: Allow method invocations as target operands
ACPICA: Fix for implicit result conversion for the ToXXX functions
ACPICA: Resources: Not a valid resource if buffer length too long
ACPICA: Utilities: Update debug output
ACPICA: Disassembler: Add Switch/Case disassembly support
ACPICA: EFI: Add efihello demo application
ACPICA: MSVC: Fix MSVC6 build issues
ACPICA: Linux-specific header: Add support for s390x compilation
ACPICA: Hardware: Add sleep register hooks
ACPICA: Macro header: Fix some typos in comments
ACPICA: Hardware: Sort access bit width algorithm
ACPICA: Utilities: Add power of two rounding support
ACPICA: Hardware: Add access_width/bit_offset support in acpi_hw_write()
...
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ACPICA commit 43e04e75a9849072a1557b674004d8093bddb9ef
Remove the bit width of the compiler that generated the tool
from the tool signon. This was confusing and unnecessary.
Changed the iASL signon to add "disassembler" to the name.
Link: https://github.com/acpica/acpica/commit/43e04e75
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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ACPICA commit 16577e5265923f4999b4d2c0addb2343b18135e1
Affects all files.
Link: https://github.com/acpica/acpica/commit/16577e52
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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ACPICA commit b90e39948954ff400cff1a3f8effddb67f15460b
Operand for deref_of should not have been a term_arg, should be super_name.
Rename NAME_OR_REF to SIMPLENAME.
Link: https://github.com/acpica/acpica/commit/b90e3994
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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ACPICA commit b7dae343fbb8c392999a66f5e08be5744a5d07e2
This change fixes a problem with the recent support that enables
control method invocations as Target operands to many ASL
operators. Eliminates errors similar to:
Needed type [Reference], found [Processor]
Link: https://github.com/acpica/acpica/commit/b7dae343
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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ACPICA commit a6cca7a4786cdbfd29cea67e84b5b01a8ae6ff1c
Method invocations as target operands are allowed as target
operands in the ASL grammar. This change implements support
for this. Method must return a reference for this to work
properly at runtime, however.
Link: https://github.com/acpica/acpica/commit/a6cca7a4
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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ACPICA commit e1342c9f2dde37a67e916099658b65984ef8a434
Implicit result conversion was incorrectly disabled for the
following functions:
FromBCD
ToBCD
ToDecimalString
ToHexString
ToInteger
ToBuffer
Link: https://github.com/acpica/acpica/commit/e1342c9f
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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ACPICA commit 9f76de2d249b18804e35fb55d14b1c2604d627a1
ACPICA commit b2e89d72ef1e9deefd63c3fd1dee90f893575b3a
ACPICA commit 23b5bbe6d78afd3c5abf3adb91a1b098a3000b2e
The declared buffer length must be the same as the length of the
byte initializer list, otherwise not a valid resource descriptor.
Link: https://github.com/acpica/acpica/commit/9f76de2d
Link: https://github.com/acpica/acpica/commit/b2e89d72
Link: https://github.com/acpica/acpica/commit/23b5bbe6
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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ACPICA commit 082b5b3ee31f74735e166858eeda025288604a5a
Enhancement of miscellaneous debug output.
Link: https://github.com/acpica/acpica/commit/082b5b3e
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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ACPICA commit 0f6cc80e8af519a3c31184367b0a9be7a399cf53
iasl compiles Switch/Case statements into a single iteration While
loop with If/Else statements. This patch adds support to recognize
this generated compiler output and disassemble it back to the
original Switch statement.
Linux kernel is not affected by this patch.
Link: https://github.com/acpica/acpica/commit/0f6cc80e
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>
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ACPICA commit ba665dc8e20d9f7730466a659564dd6c557a6cbc
In Linux, para-virtualization implmentation hooks critical register
writes to prevent real hardware operations. This increases divergences
when the sleep registers are cracked in Linux resident ACPICA.
This patch tries to introduce a single OSL to reduce the divergences.
Link: https://github.com/acpica/acpica/commit/ba665dc8
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>
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ACPICA commit efc97d1d209947d6990ec81a192c6b2589d3e368
No functional change.
Link: https://github.com/acpica/acpica/commit/efc97d1
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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ACPICA commit 365b321a31cb701957c055cae2d2161577147252
GAS can be in register or register region format, so we need to
improve our "register" format detection code in order not to
regress.
Such detection may be still experimental, and is generated according
to the current known facts.
Link: https://github.com/acpica/acpica/commit/365b321a
Link: https://bugzilla.kernel.org/show_bug.cgi?id=151501
Reported-and-tested-by: Andrey Skvortsov <andrej.skvortzov@gmail.com>
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>
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ACPICA commit cbb0294649cbd7e8bd6107e4329461a6a7a0d967
This patch adds power of two rounding support up to 32 bits.
The result of the shift operations rearching to the boundary of the cpu
word is unpredicatable, so 64-bit roundings are not supported in order to
make sure no rounded shift-overs.
This support may not be performance friendly, so the APIs might be
overridden by the hosts implementations with ACPI_USE_NATIVE_BIT_FINDER
defined.
Link: https://github.com/acpica/acpica/commit/cbb02946
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>
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ACPICA commit 1ecab20bbe69a176dfb6da7210fe77aa6b3ad680
This patch adds access_width/bit_offset support in acpi_hw_write().
Link: https://github.com/acpica/acpica/commit/1ecab20b
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>
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ACPICA commit bc7c5291865e099ce01f345d0265f0eba6997e23
This linuxized ACPICA commit is a back port result of the following
Linux commit:
Commit c3bc26d4b4e36f0dc458eea8b1f722d8a8d9addd
Subject: ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset
support in acpi_hw_read()
The commit was in ACPICA and Linux upstream, after reversion and
re-integration, it is designed not to do bit_offset masking (bit_offset is
only used to determine the boundary of the register) inside of the ACPICA
APIs, but let the callers to do that as:
1. Register can have different masking schemes (W1C, W0C);
2. Normally a mask value will be provided for region format GAS.
So actually the callers are the only ones having the knowledge of masking
the register values. Suggested by Bob Moore, Fixed by Lv Zheng.
Link: https://github.com/acpica/acpica/commit/bc7c5291
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>
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ACPICA commit e76eb8b36ace880e4d475880db1128a206e57b6f
This linuxized ACPICA commit is a back port result of the following
linux commit:
Commit: f8d31489629c125806ce4bf587c0c5c284d6d113
Subject: ACPICA: Debugger: Convert some mechanisms to OSPM specific
During the back porting, it is requested by ACPICA to use expected OSL
names. Suggested by Bob Moore, Fixed by Lv Zheng.
Linux is not affected by this patch.
Link: https://github.com/acpica/acpica/commit/e76eb8b3
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>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"The majority of changes go into the Operating Performance Points (OPP)
framework and cpufreq this time, followed by devfreq and some
scattered updates all over.
The OPP changes are mostly related to switching over from RCU-based
synchronization, that turned out to be overly complicated and
problematic, to reference counting using krefs.
In the cpufreq land there are core cleanups, documentation updates, a
new driver for Broadcom BMIPS SoCs, a new cpufreq-dt sub-driver for TI
SoCs that require special handling, ARM64 SoCs support for the qoriq
driver, intel_pstate updates, powernv driver update and assorted
fixes.
The devfreq changes are mostly fixes related to the sysfs interface
and some Exynos drivers updates.
Apart from that, the cpuidle menu governor will support per-CPU PM QoS
constraints for the wakeup latency now, some bugs in the wakeup IRQs
framework are fixed, the generic power domains framework should handle
asynchronous invocations of *noirq suspend/resume callbacks from now
on, the analyze_suspend.py script is updated and there is a new tool
for intel_pstate diagnostics.
Specifics:
- Operating Performance Points (OPP) framework fixes, cleanups and
switch over from RCU-based synchronization to reference counting
using krefs (Viresh Kumar, Wei Yongjun, Dave Gerlach)
- cpufreq core cleanups and documentation updates (Viresh Kumar,
Rafael Wysocki)
- New cpufreq driver for Broadcom BMIPS SoCs (Markus Mayer)
- New cpufreq-dt sub-driver for TI SoCs requiring special handling,
like in the AM335x, AM437x, DRA7x, and AM57x families, along with
new DT bindings for it (Dave Gerlach, Paul Gortmaker)
- ARM64 SoCs support for the qoriq cpufreq driver (Tang Yuantian)
- intel_pstate driver updates including a new sysfs knob to control
the driver's operation mode and fixes related to the no_turbo sysfs
knob and the hardware-managed P-states feature support (Rafael
Wysocki, Srinivas Pandruvada)
- New interface to export ultra-turbo frequencies for the powernv
cpufreq driver (Shilpasri Bhat)
- Assorted fixes for cpufreq drivers (Arnd Bergmann, Dan Carpenter,
Wei Yongjun)
- devfreq core fixes, mostly related to the sysfs interface exported
by it (Chanwoo Choi, Chris Diamand)
- Updates of the exynos-bus and exynos-ppmu devfreq drivers (Chanwoo
Choi)
- Device PM QoS extension to support CPUs and support for per-CPU
wakeup (device resume) latency constraints in the cpuidle menu
governor (Alex Shi)
- Wakeup IRQs framework fixes (Grygorii Strashko)
- Generic power domains framework update including a fix to make it
handle asynchronous invocations of *noirq suspend/resume callbacks
correctly (Ulf Hansson, Geert Uytterhoeven)
- Assorted fixes and cleanups in the core suspend/hibernate code, PM
QoS framework and x86 ACPI idle support code (Corentin Labbe, Geert
Uytterhoeven, Geliang Tang, John Keeping, Nick Desaulniers)
- Update of the analyze_suspend.py script is updated to version 4.5
offering multiple improvements (Todd Brandt)
- New tool for intel_pstate diagnostics using the pstate_sample
tracepoint (Doug Smythies)"
* tag 'pm-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (85 commits)
MAINTAINERS: cpufreq: add bmips-cpufreq.c
PM / QoS: Fix memory leak on resume_latency.notifiers
PM / Documentation: Spelling s/wrtie/write/
PM / sleep: Fix test_suspend after sleep state rework
cpufreq: CPPC: add ACPI_PROCESSOR dependency
cpufreq: make ti-cpufreq explicitly non-modular
cpufreq: Do not clear real_cpus mask on policy init
tools/power/x86: Debug utility for intel_pstate driver
AnalyzeSuspend: fix drag and zoom bug in javascript
PM / wakeirq: report a wakeup_event on dedicated wekup irq
PM / wakeirq: Fix spurious wake-up events for dedicated wakeirqs
PM / wakeirq: Enable dedicated wakeirq for suspend
cpufreq: dt: Don't use generic platdev driver for ti-cpufreq platforms
cpufreq: ti: Add cpufreq driver to determine available OPPs at runtime
Documentation: dt: add bindings for ti-cpufreq
PM / OPP: Expose _of_get_opp_desc_node as dev_pm_opp API
cpufreq: qoriq: Don't look at clock implementation details
cpufreq: qoriq: add ARM64 SoCs support
PM / Domains: Provide dummy governors if CONFIG_PM_GENERIC_DOMAINS=n
cpufreq: brcmstb-avs-cpufreq: remove unnecessary platform_set_drvdata()
...
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* pm-core:
PM / wakeirq: report a wakeup_event on dedicated wekup irq
PM / wakeirq: Fix spurious wake-up events for dedicated wakeirqs
PM / wakeirq: Enable dedicated wakeirq for suspend
* pm-qos:
PM / QoS: Fix memory leak on resume_latency.notifiers
PM / QoS: Remove unneeded linux/miscdevice.h include
* pm-domains:
PM / Domains: Provide dummy governors if CONFIG_PM_GENERIC_DOMAINS=n
PM / Domains: Fix asynchronous execution of *noirq() callbacks
PM / Domains: Correct comment in irq_safe_dev_in_no_sleep_domain()
PM / Domains: Rename functions in genpd for power on/off
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As the PM core may invoke the *noirq() callbacks asynchronously, the
current lock-less approach in genpd doesn't work. The consequence is that
we may find concurrent operations racing to power on/off the PM domain.
As of now, no immediate errors has been reported, but it's probably only a
matter time. Therefor let's fix the problem now before this becomes a real
issue, by deploying the locking scheme to the relevant functions.
Reported-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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The earlier comment stated that the dev_warn_once() was going to be printed
once per device. Let's fix that, as dev_warn_once() is printed only once,
no matter of the device.
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Lina Iyer <lina.iyer@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Currently the mix of genpd_poweron(), genpd_power_on(),
genpd_sync_poweron() and the ->power_on() callback, makes
a bit difficult to follow the path of execution. The similar
applies to the functions dealing with power off.
In a way to improve this understanding, let's do the following renaming:
genpd_power_on() -> _genpd_power_on()
genpd_poweron() -> genpd_power_on()
genpd_sync_poweron() -> genpd_sync_power_on()
genpd_power_off() -> _genpd_power_off()
genpd_poweroff() -> genpd_power_off()
genpd_sync_poweroff() -> genpd_sync_power_off()
genpd_poweroff_unused() -> genpd_power_off_unused()
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Since commit 2d984ad132a8 (PM / QoS: Introcuce latency tolerance device
PM QoS type) we reassign "c" to point at qos->latency_tolerance before
freeing c->notifiers, but the notifiers field of latency_tolerance is
never used.
Restore the original behaviour of freeing the notifiers pointer on
qos->resume_latency, which is used, and fix the following kmemleak
warning.
unreferenced object 0xed9dba00 (size 64):
comm "kworker/0:1", pid 36, jiffies 4294670128 (age 15202.983s)
hex dump (first 32 bytes):
00 00 00 00 04 ba 9d ed 04 ba 9d ed 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<c06f6084>] kmemleak_alloc+0x74/0xb8
[<c011c964>] kmem_cache_alloc_trace+0x170/0x25c
[<c035f448>] dev_pm_qos_constraints_allocate+0x3c/0xe4
[<c035f574>] __dev_pm_qos_add_request+0x84/0x1a0
[<c035f6cc>] dev_pm_qos_add_request+0x3c/0x54
[<c03c3fc4>] usb_hub_create_port_device+0x110/0x2b8
[<c03b2a60>] hub_probe+0xadc/0xc80
[<c03bb050>] usb_probe_interface+0x1b4/0x260
[<c035773c>] driver_probe_device+0x198/0x40c
[<c0357b14>] __device_attach_driver+0x8c/0x98
[<c0355bbc>] bus_for_each_drv+0x8c/0x9c
[<c0357494>] __device_attach+0x98/0x138
[<c0357c64>] device_initial_probe+0x14/0x18
[<c03569dc>] bus_probe_device+0x30/0x88
[<c0354c54>] device_add+0x430/0x554
[<c03b92d8>] usb_set_configuration+0x660/0x6fc
Fixes: 2d984ad132a8 (PM / QoS: Introcuce latency tolerance device PM QoS type)
Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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There are two reasons for reporting wakeup event when dedicated wakeup
IRQ is triggered:
- wakeup events accounting, so proper statistical data will be
displayed in sysfs and debugfs;
- there are small window when System is entering suspend during which
dedicated wakeup IRQ can be lost:
dpm_suspend_noirq()
|- device_wakeup_arm_wake_irqs()
|- dev_pm_arm_wake_irq(X)
|- IRQ is enabled and marked as wakeup source
[1]...
|- suspend_device_irqs()
|- suspend_device_irq(X)
|- irqd_set(X, IRQD_WAKEUP_ARMED);
|- wakup IRQ armed
The wakeup IRQ can be lost if it's triggered at point [1]
and not armed yet.
Hence, fix above cases by adding simple pm_wakeup_event() call in
handle_threaded_wake_irq().
Fixes: 4990d4fe327b (PM / Wakeirq: Add automated device wake IRQ handling)
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Keerthy <j-keerthy@ti.com>
[ tony@atomide.com: added missing return to avoid warnings ]
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Dedicated wakeirq is a one time event to wake-up the system from
low-power state and then call pm_runtime_resume() on the device wired
with the dedicated wakeirq.
Sometimes dedicated wakeirqs can get deferred if they trigger after we
call disable_irq_nosync() in dev_pm_disable_wake_irq(). This can happen
if pm_runtime_get() is called around the same time a wakeirq fires.
If an interrupt fires after disable_irq_nosync(), by default it will get
tagged with IRQS_PENDING and will run later on when the interrupt is
enabled again.
Deferred wakeirqs usually just produce pointless wake-up events. But they
can also cause suspend to fail if the deferred wakeirq fires during
dpm_suspend_noirq() for example. So we really don't want to see the
deferred wakeirqs triggering after the device has resumed.
Let's fix the issue by setting IRQ_DISABLE_UNLAZY flag for the dedicated
wakeirqs. The other option would be to implement irq_disable() in the
dedicated wakeirq controller, but that's not a generic solution.
For reference below is what happens with a IRQ_TYPE_EDGE_BOTH IRQ
type wakeirq:
- resume by dedicated IRQ (EDGE_FALLING)
- suspend_enter()
....
- arch_suspend_enable_irqs()
|- dedicated IRQ armed and fired
|- irq_pm_check_wakeup()
|- disarm, disable IRQ and mark as IRQS_PENDING
....
- dpm_resume_noirq()
|- resume_device_irqs()
|- __enable_irq()
|- check_irq_resend()
|- handle_threaded_wake_irq()
|- dedicated IRQ processed
|- device_wakeup_disarm_wake_irqs()
|- disable_irq_wake()
....
!-> dedicated IRQ (EDGE_RISING)
-| handle_edge_irq()
|- IRQ disabled: mask_ack_irq and mark as IRQS_PENDING
....
- subsequent suspend
....
|- dpm_suspend_noirq()
|- device_wakeup_arm_wake_irqs()
|- __enable_irq()
|- check_irq_resend()
(a) |- handle_threaded_wake_irq()
|- pm_wakeup_event() --> abort suspend
....
|- suspend_device_irqs()
|- suspend_device_irq()
|- dedicated IRQ armed
....
(b) |- resend_irqs
|- irq_pm_check_wakeup()
|- IRQ armed -> abort suspend
because of pending IRQ System suspend can be aborted at points
(a)-not armed or (b)-armed.
Fixes: 4990d4fe327b (PM / Wakeirq: Add automated device wake IRQ handling)
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
[ tony@atomide.com: added a comment, updated the description ]
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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We currently rely on runtime PM to enable dedicated wakeirq for suspend.
This assumption fails in the following two cases:
1. If the consumer driver does not have runtime PM implemented, the
dedicated wakeirq never gets enabled for suspend
2. If the consumer driver has runtime PM implemented, but does not idle
in suspend
Let's fix the issue by always enabling the dedicated wakeirq during
suspend.
Depends-on: bed570307ed7 (PM / wakeirq: Fix dedicated wakeirq for drivers not using autosuspend)
Fixes: 4990d4fe327b (PM / Wakeirq: Add automated device wake IRQ handling)
Reported-by: Keerthy <j-keerthy@ti.com>
Tested-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
[ tony@atomide.com: updated based on bed570307ed7, added description ]
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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* pm-devfreq:
PM / devfreq: Modify the device name as devfreq(X) for sysfs
PM / devfreq: Simplify the sysfs name of devfreq-event device
PM / devfreq: Remove unnecessary separate _remove_devfreq()
PM / devfreq: Fix wrong trans_stat of passive devfreq device
PM / devfreq: Fix available_governor sysfs
PM / devfreq: exynos-ppmu: Show the registred device for ppmu device
PM / devfreq: Fix the wrong description for userspace governor
PM / devfreq: Fix the checkpatch warnings
PM / devfreq: exynos-bus: Print the real clock rate of bus
PM / devfreq: exynos-ppmu: Use the regmap interface to handle the registers
PM / devfreq: exynos-bus: Add the detailed correlation for Exynos5433
PM / devfreq: Don't delete sysfs group twice
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This patch modifies the device name as devfreq(X) for sysfs by using the 'devfreq'
prefix word instead of separate device name. On user-space aspect, user would
find the some devfreq drvier with 'devfreq(X)' pattern. So, this patch modify the
device name as following:
- /sys/class/devfreq/[non-standard device name] -> /sys/class/devfreq/devfreq(X)
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
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This patch just removes '.' character from the sysfs name of devfreq-event
device as following. Usually, the subsystem uses the similiar naming style
such as {framework name}{Number}.
- old : /sys/class/devfreq-event/event.(X)
- new : /sys/class/devfreq-event/event(X)
And this patch initializes the value of 'event_no' with -1
in order to remove the unneeded operation (-1) when calling
the atomic_inc_return(&event_no).
Lastly, this patch adds the ABI document for devfreq-event class.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
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The _remove_devfreq() releases the all resources of the devfreq
device. This function is only called in the devfreq_dev_release().
For that reason, the devfreq core doesn't need to leave the
_remove_devfreq() separately. This patch releases the all
resources in the devfreq_dev_release() and then removes the
_remove_devfreq().
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
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Until now, the trans_stat information of passive devfreq is not updated.
This patch updates the trans_stat information after setting the target
frequency of passive devfreq device.
Fixes: 996133119f57 ("PM / devfreq: Add new passive governor")
Cc: stable@vger.kernel.org
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
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