Commit Graph

94 Commits

Author SHA1 Message Date
Thomas Weißschuh
ac62f52138 ACPI: AC: Properly notify powermanagement core about changes
The powermanagement core does various actions when a powersupply changes.
It calls into notifiers, LED triggers, other power supplies and emits an uevent.

To make sure that all these actions happen properly call power_supply_changed().

Reported-by: Rajas Paranjpe <paranjperajas@gmail.com>
Closes: https://github.com/MrChromebox/firmware/issues/420#issuecomment-2132251318
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-05-28 21:56:40 +02:00
Michal Wilczynski
c7b59371fe ACPI: AC: Rename ACPI device from device to adev
Since transformation from ACPI driver to platform driver there are two
devices on which the driver operates - ACPI device and platform device.
For the sake of reader this calls for the distinction in their naming,
to avoid confusion. Rename device to adev, as corresponding
platform device is called pdev.

Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-10-17 15:43:30 +02:00
Michal Wilczynski
5829046825 ACPI: AC: Replace acpi_driver with platform_driver
The AC driver uses struct acpi_driver to register itself while it would
be more logically consistent to use struct platform_driver for this
purpose, because the corresponding platform device is present and the
role of struct acpi_device is to amend the other bus types. ACPI devices
are not meant to be used as proper representation of hardware entities,
but to collect information on those hardware entities provided by the
platform firmware.

Use struct platform_driver for registering the AC driver.

Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com>
[ rjw: Changelog edits, acpi_ac_notify() modifications fixup ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-10-13 20:11:29 +02:00
Michal Wilczynski
616990c92e ACPI: AC: Use string_choices API instead of ternary operator
Use modern string_choices API instead of manually determining the
output using ternary operator.

Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-10-13 19:51:54 +02:00
Michal Wilczynski
bc4c9757e3 ACPI: AC: Remove redundant checks
Remove unnecessary checks against NULL for pointers that can't be NULL
when the checks are done.

Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com>
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-10-13 19:51:54 +02:00
Rafael J. Wysocki
470508f63a ACPI: bus: Add context argument to acpi_dev_install_notify_handler()
Add void *context arrgument to the list of arguments of
acpi_dev_install_notify_handler() and modify it to pass that argument
as context to acpi_install_notify_handler() instead of its first
argument which is problematic in general (for example, if platform
drivers used it, they would rather get struct platform_device pointers
or pointers to their private data from the context arguments of their
notify handlers).

Make all of the current callers of acpi_dev_install_notify_handler()
take this change into account so as to avoid altering the general
functionality.

Co-developed-by: Michal Wilczynski <michal.wilczynski@intel.com>
Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-10-06 17:32:51 +02:00
Michal Wilczynski
543a2d115a ACPI: AC: Install Notify() handler directly
Modify the ACPI AC driver to install its own Notify() handler directly
instead of providing an ACPI driver .notify() callback.

This will allow the ACPI driver .notify() callback to be eliminated and
it will allow the AC driver to be switched over to a platform one in the
future.

Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com>
[ rjw: Subject and changelog edits, whitespace adjustments ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-07-14 18:58:34 +02:00
Dawei Li
6c0eb5ba35 ACPI: make remove callback of ACPI driver void
For bus-based driver, device removal is implemented as:
1 device_remove()->
2   bus->remove()->
3     driver->remove()

Driver core needs no inform from callee(bus driver) about the
result of remove callback. In that case, commit fc7a6209d5
("bus: Make remove callback return void") forces bus_type::remove
be void-returned.

Now we have the situation that both 1 & 2 of calling chain are
void-returned, so it does not make much sense for 3(driver->remove)
to return non-void to its caller.

So the basic idea behind this change is making remove() callback of
any bus-based driver to be void-returned.

This change, for itself, is for device drivers based on acpi-bus.

Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Lee Jones <lee@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dawei Li <set_pte_at@outlook.com>
Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com>  # for drivers/platform/surface/*
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-11-23 19:11:22 +01:00
Hanjun Guo
f336443acc ACPI: AC: Remove the leftover struct acpi_ac_bl
In commit 57a1832222 ("ACPI / x86: Introduce an
acpi_quirk_skip_acpi_ac_and_battery() helper"), the usage of struct
acpi_ac_bl was removed, but left the definition of the struct in
the file, so remove the useless code.

Signed-off-by: Hanjun Guo <guohanjun@huawei.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-09-24 18:22:59 +02:00
Ian Cowan
4c19851c70 ACPI: clean up white space in a few places for consistency
This cleans up a few line spaces so that it is consistent with the rest
of the file. There are a few places where a space was added before a
return and two spots where a double line space was made into one line
space.

Signed-off-by: Ian Cowan <ian@linux.cowan.aero>
[ rjw: Subject adjustment ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-05-12 16:54:49 +02:00
Hans de Goede
57a1832222 ACPI / x86: Introduce an acpi_quirk_skip_acpi_ac_and_battery() helper
Some x86 ACPI boards have broken AC and battery ACPI devices in their ACPI
tables. This is often tied to these devices using certain PMICs where the
factory OS image seems to be using native charger and fuel-gauge drivers
instead.

So far both the AC and battery drivers have almost identical checks for
these PMICs including both of them having a DMI based mechanism to force
usage of the ACPI AC and battery drivers on some boards even though one
of these PMICs is present, with the same 2 boards listed in both driver's
DMI tables for this.

The only difference is that the AC driver checks for 2 PMICs and the
battery driver only for one. This has grown this way because the other
(Whiskey Cove) PMIC is only used on a few boards (3 known boards) and
although some of these do have non working ACPI battery devices, their
_STA method always returns 0, but that really should not be relied on.

This patch factors out the shared checks into a new
acpi_quirk_skip_acpi_ac_and_battery() helper and moves the AC and
battery drivers over to this new helper.

Note the DMI table is shared with acpi_quirk_skip_i2c_client_enumeration()
and acpi_quirk_skip_serdev_enumeration(), because boards needing DMI quirks
for either of these typically also have broken AC and battery ACPI devices.

The ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY quirk is not set yet on boards
already in this DMI table, to avoid introducing any functional changes
in this refactoring patch.

Besided sharing the code between the AC and battery drivers this
refactoring also moves this quirk handling to under #ifdef CONFIG_X86,
removing this x86 specific code from non x86 ACPI builds.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-01-04 15:40:48 +01:00
Stefan Schaeckeler
3d730ee686 ACPI: AC: Quirk GK45 to skip reading _PSR
Let GK45 not go into BIOS for determining the AC power state.

The BIOS wrongly returns 0, so hardcode the power state to 1.

The mini PC GK45 by Besstar Tech Lld. (aka Kodlix) just runs
off AC. It does not include any batteries. Nevertheless BIOS
reports AC off:

root@kodlix:/usr/src/linux# cat /sys/class/power_supply/ADP1/online
0

root@kodlix:/usr/src/linux# modprobe acpi_dbg
root@kodlix:/usr/src/linux# tools/power/acpi/acpidbg

- find _PSR
   \_SB.PCI0.SBRG.H_EC.ADP1._PSR Method       000000009283cee8 001 Args 0 Len 001C Aml 00000000f54e5f67

- execute \_SB.PCI0.SBRG.H_EC.ADP1._PSR
Evaluating \_SB.PCI0.SBRG.H_EC.ADP1._PSR
Evaluation of \_SB.PCI0.SBRG.H_EC.ADP1._PSR returned object 00000000dc08c187, external buffer length 18
 [Integer] = 0000000000000000

that should be

 [Integer] = 0000000000000001

Signed-off-by: Stefan Schaeckeler <schaecsn@gmx.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-10-26 15:34:54 +02:00
Xiaofei Tan
9104457ea5 ACPI: AC: fix some coding style issues
Fix some coding style issues reported by checkpatch.pl, including the
following types:

ERROR: "foo * bar" should be "foo *bar"
ERROR: code indent should use tabs where possible
WARNING: Block comments use a trailing */ on a separate line
WARNING: braces {} are not necessary for single statement blocks
WARNING: void function return statements are not generally useful
WARNING: CVS style keyword markers, these will _not_ be updated

Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-04-08 16:17:32 +02:00
Tom Saeger
935ab8509c ACPI: fix various typos in comments
Fix trivial ACPI driver comment typos.

s/notifcations/notifications/
s/Ajust/Adjust/
s/preform/perform/
s/atrributes/attributes/
s/Souce/Source/
s/Evalutes/Evaluates/
s/Evalutes/Evaluates/
s/specifiy/specify/
s/promixity/proximity/
s/presuambly/presumably/
s/Evalute/Evaluate/
s/specificed/specified/
s/rountine/routine/
s/previosuly/previously/

Change comment referencing pcc_send_cmd to send_pcc_cmd.

Signed-off-by: Tom Saeger <tom.saeger@oracle.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-03-19 17:45:49 +01:00
Rafael J. Wysocki
2249ff3444 ACPI: AC: Clean up printing messages
Replace the ACPI_DEBUG_PRINT() and ACPI_EXCEPTION() instances
in ac.c with acpi_handle_debug() and acpi_handle_info() calls,
respectively, which among other things causes the excessive log
level of the messages previously printed via ACPI_EXCEPTION() to
be increased.

Drop the _COMPONENT and ACPI_MODULE_NAME() definitions that are not
used any more, drop the no longer needed ACPI_AC_COMPONENT definition
from the headers and update the documentation accordingly.

While at it, replace the direct printk() invocation with pr_info(),
add a pr_fmt() definition to ac.c and drop the unneeded PREFIX
symbol definition from there.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2021-02-04 19:45:45 +01:00
Rafael J. Wysocki
db1da2f52e Merge branches 'acpi-mm', 'acpi-tables', 'acpi-apei' and 'acpi-misc'
* acpi-mm:
  ACPI: OSL: Clean up the removal of unused memory mappings
  ACPI: OSL: Use deferred unmapping in acpi_os_unmap_iomem()
  ACPI: OSL: Use deferred unmapping in acpi_os_unmap_generic_address()
  ACPICA: Preserve memory opregion mappings
  ACPI: OSL: Implement deferred unmapping of ACPI memory

* acpi-tables:
  ACPI: NUMA: Remove the useless 'node >= MAX_NUMNODES' check
  ACPI: NUMA: Remove the useless sub table pointer check
  ACPI: tables: Remove the duplicated checks for acpi_parse_entries_array()
  ACPI: tables: avoid relocations for table signature array

* acpi-apei:
  ACPI: APEI: remove redundant assignment to variable rc

* acpi-misc:
  ACPI: Replace HTTP links with HTTPS ones
  ACPI: Use valid link to the ACPI specification
  ACPI: Use fallthrough pseudo-keyword
2020-08-03 13:14:42 +02:00
Gustavo A. R. Silva
57d2dd4bd1 ACPI: Use fallthrough pseudo-keyword
Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through # [1]
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-07-09 14:09:28 +02:00
Thomas Renninger
8830280a69 ACPI: procfs: Remove last dirs after being marked deprecated for a decade
This code is outdated and has been deprecated for a long time, so user
space is not expected to rely on it any more on any systems that are
up to date by any reasonable measure.  Remove it.

Signed-off-by: Thomas Renninger <trenn@suse.de>
[ rjw: Subject / changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-06-22 16:55:47 +02:00
Hans de Goede
04900fa3ab ACPI / AC: Cleanup DMI quirk table
The 3 different entries we have sofar all use different identation and
2 of the use DMI_MATCH where as 1 unnecessarily used DMI_EXACT_MATCH
Fix this to just use full tab idents for each level and DMI_MATCH
everywhere and sort the entries alphabetically.

Also add a bit of text to the comments explaining why the quirk is
necessary.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-03-04 10:32:50 +01:00
Thomas Gleixner
c942fddf87 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
Based on 3 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version [author] [kishon] [vijay] [abraham]
  [i] [kishon]@[ti] [com] this program is distributed in the hope that
  it will be useful but without any warranty without even the implied
  warranty of merchantability or fitness for a particular purpose see
  the gnu general public license for more details

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version [author] [graeme] [gregory]
  [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
  [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
  [hk] [hemahk]@[ti] [com] this program is distributed in the hope
  that it will be useful but without any warranty without even the
  implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1105 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:37 -07:00
Linus Torvalds
f4fe74cc90 ACPI updates for 4.18-rc1
These update the ACPICA code in the kernel to the 20180508 upstream
 revision and make it support the RT patch, add CPPC v3 support to the
 ACPI CPPC library, add a WDAT-based watchdog quirk to prevent clashes
 with the RTC, add quirks to the ACPI AC and battery drivers, and
 update the ACPI SoC drivers.
 
 Specifics:
 
  - Update the ACPICA code in the kernel to the 20180508 upstream
    revision including:
    * iASL -tc option enhancement (Bob Moore).
    * Debugger improvements (Bob Moore).
    * Support for tables larger than 1 MB in acpidump/acpixtract
      (Bob Moore).
    * Minor fixes and cleanups (Colin Ian King, Toomas Soome).
 
  - Make the ACPICA code in the kernel support the RT patch (Sebastian
    Andrzej Siewior, Steven Rostedt).
 
  - Add a kmemleak annotation to the ACPICA code (Larry Finger).
 
  - Add CPPC v3 support to the ACPI CPPC library and fix two issues
    related to CPPC (Prashanth Prakash, Al Stone).
 
  - Add an ACPI WDAT-based watchdog quirk to prefer iTCO_wdt on
    systems where WDAT clashes with the RTC SRAM (Mika Westerberg).
 
  - Add some quirks to the ACPI AC and battery drivers (Carlo Caione,
    Hans de Goede).
 
  - Update the ACPI SoC drivers for Intel (LPSS) and AMD (APD)
    platforms (Akshu Agrawal, Hans de Goede).
 
  - Fix up some assorted minor issues (Al Stone, Laszlo Toth,
    Mathieu Malaterre).
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Merge tag 'acpi-4.18-rc1' of 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 the 20180508 upstream
  revision and make it support the RT patch, add CPPC v3 support to the
  ACPI CPPC library, add a WDAT-based watchdog quirk to prevent clashes
  with the RTC, add quirks to the ACPI AC and battery drivers, and
  update the ACPI SoC drivers.

  Specifics:

   - Update the ACPICA code in the kernel to the 20180508 upstream
     revision including:
       * iASL -tc option enhancement (Bob Moore).
       * Debugger improvements (Bob Moore).
       * Support for tables larger than 1 MB in acpidump/acpixtract (Bob
         Moore).
       * Minor fixes and cleanups (Colin Ian King, Toomas Soome).

   - Make the ACPICA code in the kernel support the RT patch (Sebastian
     Andrzej Siewior, Steven Rostedt).

   - Add a kmemleak annotation to the ACPICA code (Larry Finger).

   - Add CPPC v3 support to the ACPI CPPC library and fix two issues
     related to CPPC (Prashanth Prakash, Al Stone).

   - Add an ACPI WDAT-based watchdog quirk to prefer iTCO_wdt on systems
     where WDAT clashes with the RTC SRAM (Mika Westerberg).

   - Add some quirks to the ACPI AC and battery drivers (Carlo Caione,
     Hans de Goede).

   - Update the ACPI SoC drivers for Intel (LPSS) and AMD (APD)
     platforms (Akshu Agrawal, Hans de Goede).

   - Fix up some assorted minor issues (Al Stone, Laszlo Toth, Mathieu
     Malaterre)"

* tag 'acpi-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits)
  ACPICA: Mark acpi_ut_create_internal_object_dbg() memory allocations as non-leaks
  ACPI / watchdog: Prefer iTCO_wdt always when WDAT table uses RTC SRAM
  mailbox: PCC: erroneous error message when parsing ACPI PCCT
  ACPICA: Update version to 20180508
  ACPICA: acpidump/acpixtract: Support for tables larger than 1MB
  ACPI: APD: Add AMD misc clock handler support
  clk: x86: Add ST oscout platform clock
  ACPICA: Update version to 20180427
  ACPICA: Debugger: Removed direct support for EC address space in "Test Objects"
  ACPICA: Debugger: Add Package support for "test objects" command
  ACPICA: Improve error messages for the namespace root node
  ACPICA: Fix potential infinite loop in acpi_rs_dump_byte_list
  ACPICA: vsnprintf: this statement may fall through
  ACPICA: Tables: Fix spelling mistake in comment
  ACPICA: iASL: Enhance the -tc option (create AML hex file in C)
  ACPI: Add missing prototype_for arch_post_acpi_subsys_init()
  ACPI / tables: improve comments regarding acpi_parse_entries_array()
  ACPICA: Convert acpi_gbl_hardware lock back to an acpi_raw_spinlock
  ACPICA: provide abstraction for raw_spinlock_t
  ACPI / CPPC: Fix invalid PCC channel status errors
  ...
2018-06-05 10:08:27 -07:00
Rafael J. Wysocki
6c128e798f Merge branches 'acpi-cppc', 'acpi-misc', 'acpi-battery' and 'acpi-ac'
* acpi-cppc:
  mailbox: PCC: erroneous error message when parsing ACPI PCCT
  ACPI / CPPC: Fix invalid PCC channel status errors
  ACPI / CPPC: Document CPPC sysfs interface
  cpufreq / CPPC: Support for CPPC v3
  ACPI / CPPC: Check for valid PCC subspace only if PCC is used
  ACPI / CPPC: Add support for CPPC v3

* acpi-misc:
  ACPI: Add missing prototype_for arch_post_acpi_subsys_init()
  ACPI: add missing newline to printk

* acpi-battery:
  ACPI / battery: Add quirk to avoid checking for PMIC with native driver
  ACPI / battery: Ignore AC state in handle_discharging on systems where it is broken
  ACPI / battery: Add handling for devices which wrongly report discharging state
  ACPI / battery: Remove initializer for unused ident dmi_system_id
  ACPI / AC: Remove initializer for unused ident dmi_system_id

* acpi-ac:
  ACPI / AC: Add quirk to avoid checking for PMIC with native driver
2018-06-04 10:43:34 +02:00
Christoph Hellwig
3f3942aca6 proc: introduce proc_create_single{,_data}
Variants of proc_create{,_data} that directly take a seq_file show
callback and drastically reduces the boilerplate code in the callers.

All trivial callers converted over.

Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16 07:23:35 +02:00
Carlo Caione
91ea5b1dd3 ACPI / AC: Add quirk to avoid checking for PMIC with native driver
With commit af3ec837b8 (ACPI / AC: Add a blacklist with PMIC ACPI HIDs
with a native charger driver) a blacklist was introduced to avoid using
the ACPI drivers for AC when a native PMIC driver was already present.
While this is in general a good idea (because of broken DSDT or proprietary
and undocumented ACPI opregions for the ACPI AC devices) there are some
Cherry Trail devices which use a separate charger controller despite the
AXP288 having a builtin charger.

The net effect of blacklisting the ACPI drivers is that on these devices
the AC reporting is broken since the AXP288 PMIC charger bits are not
actually used on this hardware.

This commit adds an ac_do_not_check_pmic quirk for this and sets this on
the 2 devices currently known to use a separate FG controller,
the ECS EF20EA and the Lenovo Ideapad Miix 320.

[hdegoede@redhat.com: Merge the quirk handling and the adding of the DMI
 table entry into 1 commit, add a second DMI entry for the Miix 320.]

Signed-off-by: Carlo Caione <carlo@endlessm.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-10 17:12:39 +02:00
Hans de Goede
6605e3423f ACPI / AC: Remove initializer for unused ident dmi_system_id
The ac.c code does not use the dmi_system_id ident member, so there is
no need to initialize it. This saves us storing the unused "thinkpad e530"
string as const data.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-02 13:06:59 +02:00
Ognjen Galic
fa93854f7a battery: Add the battery hooking API
This is a patch that implements a generic hooking API for the
generic ACPI battery driver.

With this new generic API, drivers can expose platform specific
behaviour via sysfs attributes in /sys/class/power_supply/BATn/
in a generic way.

A perfect example of the need for this API are Lenovo ThinkPads.

Lenovo ThinkPads have a ACPI extension that allows the setting of
start and stop charge thresholds in the EC and battery firmware
via ACPI. The thinkpad_acpi module can use this API to expose
sysfs attributes that it controls inside the ACPI battery driver
sysfs tree, under /sys/class/power_supply/BATN/.

The file drivers/acpi/battery.h has been moved to
include/acpi/battery.h and the includes inside ac.c, sbs.c, and
battery.c have been adjusted to reflect that.

When drivers hooks into the API, the API calls add_battery() for
each battery in the system that passes it a acpi_battery
struct. Then, the drivers can use device_create_file() to create
new sysfs attributes with that struct and identify the batteries
for per-battery attributes.

Signed-off-by: Ognjen Galic <smclt30p@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-02-21 23:27:13 +01:00
Gustavo A. R. Silva
1be9c3a0a0 ACPI: Mark expected switch fall-throughs
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-11-09 00:55:16 +01:00
Hans de Goede
af3ec837b8 ACPI / AC: Add a blacklist with PMIC ACPI HIDs with a native charger driver
On some systems we have a native PMIC driver which provides Mains
monitoring, while the ACPI ac driver is broken on these systems
due to bad DSTDs or because we do not support the proprietary and
undocumented ACPI opregions these ACPI battery devices rely on
(e.g. BMOP opregion).

This leads for example to a ADP1 power_supply which reports
itself as always online even if no mains are connected.

This commit adds a blacklist with PMIC ACPI HIDs for which we've a
native charger or extcon driver and makes the ACPI ac driver not
register itself when a PMIC on this list is present.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-04-19 22:53:35 +02:00
Jarkko Nikula
4c62dbbce9 ACPI: Remove FSF mailing addresses
There is no need to carry potentially outdated Free Software Foundation
mailing address in file headers since the COPYING file includes it.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-07-08 02:27:32 +02:00
Mathias Krause
44f610cdfb ACPI / AC: constify DMI system id table
There is no need to have ac_dmi_table[] writeable, constify it.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-06-15 14:14:49 +02:00
Krzysztof Kozlowski
297d716f62 power_supply: Change ownership from driver to core
Change the ownership of power_supply structure from each driver
implementing the class to the power supply core.

The patch changes power_supply_register() function thus all drivers
implementing power supply class are adjusted.

Each driver provides the implementation of power supply. However it
should not be the owner of power supply class instance because it is
exposed by core to other subsystems with power_supply_get_by_name().
These other subsystems have no knowledge when the driver will unregister
the power supply. This leads to several issues when driver is unbound -
mostly because user of power supply accesses freed memory.

Instead let the core own the instance of struct 'power_supply'.  Other
users of this power supply will still access valid memory because it
will be freed when device reference count reaches 0. Currently this
means "it will leak" but power_supply_put() call in next patches will
solve it.

This solves invalid memory references in following race condition
scenario:

Thread 1: charger manager
Thread 2: power supply driver, used by charger manager

THREAD 1 (charger manager)         THREAD 2 (power supply driver)
==========================         ==============================
psy = power_supply_get_by_name()
                                   Driver unbind, .remove
                                     power_supply_unregister()
                                     Device fully removed
psy->get_property()

The 'get_property' call is executed in invalid context because the driver was
unbound and struct 'power_supply' memory was freed.

This could be observed easily with charger manager driver (here compiled
with max17040 fuel gauge):

$ cat /sys/devices/virtual/power_supply/cm-battery/capacity &
$ echo "1-0036" > /sys/bus/i2c/drivers/max17040/unbind
[   55.725123] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[   55.732584] pgd = d98d4000
[   55.734060] [00000000] *pgd=5afa2831, *pte=00000000, *ppte=00000000
[   55.740318] Internal error: Oops: 80000007 [#1] PREEMPT SMP ARM
[   55.746210] Modules linked in:
[   55.749259] CPU: 1 PID: 2936 Comm: cat Tainted: G        W       3.19.0-rc1-next-20141226-00048-gf79f475f3c44-dirty #1496
[   55.760190] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
[   55.766270] task: d9b76f00 ti: daf54000 task.ti: daf54000
[   55.771647] PC is at 0x0
[   55.774182] LR is at charger_get_property+0x2f4/0x36c
[   55.779201] pc : [<00000000>]    lr : [<c034b0b4>]    psr: 60000013
[   55.779201] sp : daf55e90  ip : 00000003  fp : 00000000
[   55.790657] r10: 00000000  r9 : c06e2878  r8 : d9b26c68
[   55.795865] r7 : dad81610  r6 : daec7410  r5 : daf55ebc  r4 : 00000000
[   55.802367] r3 : 00000000  r2 : daf55ebc  r1 : 0000002a  r0 : d9b26c68
[   55.808879] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
[   55.815994] Control: 10c5387d  Table: 598d406a  DAC: 00000015
[   55.821723] Process cat (pid: 2936, stack limit = 0xdaf54210)
[   55.827451] Stack: (0xdaf55e90 to 0xdaf56000)
[   55.831795] 5e80:                                     60000013 c01459c4 0000002a c06f8ef8
[   55.839956] 5ea0: db651000 c06f8ef8 daebac00 c04cb668 daebac08 c0346864 00000000 c01459c4
[   55.848115] 5ec0: d99eaa80 c06f8ef8 00000fff 00001000 db651000 c027f25c c027f240 d99eaa80
[   55.856274] 5ee0: d9a06c00 c0146218 daf55f18 00001000 d99eaa80 db4c18c0 00000001 00000001
[   55.864468] 5f00: daf55f80 c0144c78 c0144c54 c0107f90 00015000 d99eaab0 00000000 00000000
[   55.872603] 5f20: 000051c7 00000000 db4c18c0 c04a9370 00015000 00001000 daf55f80 00001000
[   55.880763] 5f40: daf54000 00015000 00000000 c00e53dc db4c18c0 c00e548c 0000000d 00008124
[   55.888937] 5f60: 00000001 00000000 00000000 db4c18c0 db4c18c0 00001000 00015000 c00e5550
[   55.897099] 5f80: 00000000 00000000 00001000 00001000 00015000 00000003 00000003 c000f364
[   55.905239] 5fa0: 00000000 c000f1a0 00001000 00015000 00000003 00015000 00001000 0001333c
[   55.913399] 5fc0: 00001000 00015000 00000003 00000003 00000002 00000000 00000000 00000000
[   55.921560] 5fe0: 7fffe000 be999850 0000a225 b6f3c19c 60000010 00000003 00000000 00000000
[   55.929744] [<c034b0b4>] (charger_get_property) from [<c0346864>] (power_supply_show_property+0x48/0x20c)
[   55.939286] [<c0346864>] (power_supply_show_property) from [<c027f25c>] (dev_attr_show+0x1c/0x48)
[   55.948130] [<c027f25c>] (dev_attr_show) from [<c0146218>] (sysfs_kf_seq_show+0x84/0x104)
[   55.956298] [<c0146218>] (sysfs_kf_seq_show) from [<c0144c78>] (kernfs_seq_show+0x24/0x28)
[   55.964536] [<c0144c78>] (kernfs_seq_show) from [<c0107f90>] (seq_read+0x1b0/0x484)
[   55.972172] [<c0107f90>] (seq_read) from [<c00e53dc>] (__vfs_read+0x18/0x4c)
[   55.979188] [<c00e53dc>] (__vfs_read) from [<c00e548c>] (vfs_read+0x7c/0x100)
[   55.986304] [<c00e548c>] (vfs_read) from [<c00e5550>] (SyS_read+0x40/0x8c)
[   55.993164] [<c00e5550>] (SyS_read) from [<c000f1a0>] (ret_fast_syscall+0x0/0x48)
[   56.000626] Code: bad PC value
[   56.011652] ---[ end trace 7b64343fbdae8ef1 ]---

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

[for the nvec part]
Reviewed-by: Marc Dietrich <marvin24@gmx.de>

[for compal-laptop.c]
Acked-by: Darren Hart <dvhart@linux.intel.com>

[for the mfd part]
Acked-by: Lee Jones <lee.jones@linaro.org>

[for the hid part]
Acked-by: Jiri Kosina <jkosina@suse.cz>

[for the acpi part]
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-03-13 23:15:51 +01:00
Krzysztof Kozlowski
2dc9215d7c power_supply: Move run-time configuration to separate structure
Add new structure 'power_supply_config' for holding run-time
initialization data like of_node, supplies and private driver data.

The power_supply_register() function is changed so all power supply
drivers need updating.

When registering the power supply this new 'power_supply_config' should be
used instead of directly initializing 'struct power_supply'. This allows
changing the ownership of power_supply structure from driver to the
power supply core in next patches.

When a driver does not use of_node or supplies then it should use NULL
as config. If driver uses of_node or supplies then it should allocate
config on stack and initialize it with proper values.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Pavel Machek <pavel@ucw.cz>

[for the nvec part]
Reviewed-by: Marc Dietrich <marvin24@gmx.de>

[for drivers/platform/x86/compal-laptop.c]
Reviewed-by: Darren Hart <dvhart@linux.intel.com>

[for drivers/hid/*]
Reviewed-by: Jiri Kosina <jkosina@suse.cz>

Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-03-13 23:15:12 +01:00
Lan Tianyu
e63f6e28dd Revert "ACPI / AC: Remove AC's proc directory."
Revert commit ab0fd674d6 (ACPI / AC: Remove AC's proc directory.),
because some old tools (e.g. kpowersave from kde 3.5.10) are still
using /proc/acpi/ac_adapter.

Fixes: ab0fd674d6 (ACPI / AC: Remove AC's proc directory.)
Reported-and-tested-by: Sorin Manolache <sorinm@gmail.com>
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-07 01:13:46 +02:00
Guenter Roeck
98012849e0 ACPI: Revert "ACPI / AC: convert ACPI ac driver to platform bus"
Revert commit cc8ef52707 (ACPI / AC: convert ACPI ac driver to
platform bus) that is reported to break thermal management on
MacBook Air 2013 with ArchLinux.

Fixes: cc8ef52707 (ACPI / AC: convert ACPI ac driver to platform bus)
References: https://bugzilla.kernel.org/show_bug.cgi?id=71711
Cc: Zhang Rui <rui.zhang@intel.com>
Reported-and-tested-by: Manuel Krause <manuelkrause@netscape.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: 3.13+ <stable@vger.kernel.org> # 3.13+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-08 00:37:28 +02:00
Alexander Mezin
4eee4f03ce ACPI / AC: recheck adapter status upon battery status changes
On HP Pavilion dv6-6179er there are no notifications when AC adapter
is plugged/unplugged.
However, when AC status is read (acpi_ac_get_state), and if AC status
has changed, AML code triggers the notification.

This patch solves the problem by re-reading AC adapter status upon
ACPI_BATTERY_NOTIFY_STATUS notification.

Signed-off-by: Alexander Mezin <mezin.alexander@gmail.com>
Acked-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-03-19 01:57:47 +01:00
Shuah Khan
06521c2e4a ACPI / AC: fix AC driver compile error when CONFIG_PM_SLEEP is undefined
The ACPI AC driver defines acpi_ac_resume() when CONFIG_PM_SLEEP is
defined.  This results in the following compile error when
CONFIG_PM_SLEEP is undefined:

drivers/acpi/ac.c:248:8: error: ‘acpi_ac_resume’ undeclared here (not in a function)

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-13 15:13:44 +01:00
Rafael J. Wysocki
98feb7cc61 Merge branch 'acpi-cleanup'
* acpi-cleanup: (22 commits)
  ACPI / tables: Return proper error codes from acpi_table_parse() and fix comment.
  ACPI / tables: Check if id is NULL in acpi_table_parse()
  ACPI / proc: Include appropriate header file in proc.c
  ACPI / EC: Remove unused functions and add prototype declaration in internal.h
  ACPI / dock: Include appropriate header file in dock.c
  ACPI / PCI: Include appropriate header file in pci_link.c
  ACPI / PCI: Include appropriate header file in pci_slot.c
  ACPI / EC: Mark the function acpi_ec_add_debugfs() as static in ec_sys.c
  ACPI / NVS: Include appropriate header file in nvs.c
  ACPI / OSL: Mark the function acpi_table_checksum() as static
  ACPI / processor: initialize a variable to silence compiler warning
  ACPI / processor: use ACPI_COMPANION() to get ACPI device
  ACPI: correct minor typos
  ACPI / sleep: Drop redundant acpi_disabled check
  ACPI / dock: Drop redundant acpi_disabled check
  ACPI / table: Replace '1' with specific error return values
  ACPI: remove trailing whitespace
  ACPI / IBFT: Fix incorrect <acpi/acpi.h> inclusion in iSCSI boot firmware module
  ACPI / i915: Fix incorrect <acpi/acpi.h> inclusions via <linux/acpi_io.h>
  SFI / ACPI: Fix warnings reported during builds with W=1
  ...

Conflicts:
	drivers/acpi/nvs.c
	drivers/hwmon/asus_atk0110.c
2014-01-12 23:44:09 +01:00
Alexander Mezin
50a2bc5429 ACPI / AC: change notification handler type to ACPI_ALL_NOTIFY
With kernel 3.13rc5 there are no AC adapter notifications on my laptop.

Commit cc8ef52707 "ACPI / AC: convert ACPI ac driver to platform bus"
changed the driver to listen to device notifications only. However, AML
code on my laptop notifies the driver with zero event.

This patch changes the driver to listen to all events again.

Fixes: cc8ef52707 (ACPI / AC: convert ACPI ac driver to platform bus)
References: https://bugzilla.kernel.org/show_bug.cgi?id=67821
Signed-off-by: Alexander Mezin <mezin.alexander@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-05 15:42:42 +01:00
Lv Zheng
8b48463f89 ACPI: Clean up inclusions of ACPI header files
Replace direct inclusions of <acpi/acpi.h>, <acpi/acpi_bus.h> and
<acpi/acpi_drivers.h>, which are incorrect, with <linux/acpi.h>
inclusions and remove some inclusions of those files that aren't
necessary.

First of all, <acpi/acpi.h>, <acpi/acpi_bus.h> and <acpi/acpi_drivers.h>
should not be included directly from any files that are built for
CONFIG_ACPI unset, because that generally leads to build warnings about
undefined symbols in !CONFIG_ACPI builds.  For CONFIG_ACPI set,
<linux/acpi.h> includes those files and for CONFIG_ACPI unset it
provides stub ACPI symbols to be used in that case.

Second, there are ordering dependencies between those files that always
have to be met.  Namely, it is required that <acpi/acpi_bus.h> be included
prior to <acpi/acpi_drivers.h> so that the acpi_pci_root declarations the
latter depends on are always there.  And <acpi/acpi.h> which provides
basic ACPICA type declarations should always be included prior to any other
ACPI headers in CONFIG_ACPI builds.  That also is taken care of including
<linux/acpi.h> as appropriate.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com> (drivers/pci stuff)
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> (Xen stuff)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-12-07 01:03:14 +01:00
Lan Tianyu
86b0cc12bb ACPI / AC: Remove struct acpi_device pointer from struct acpi_ac
Now the pointer of struct acpi_device can be got by
ACPI_COMPANION(struct acpi_ac->pdev->dev). So the pointer
is not necessary and remove it.

Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-11-14 23:23:14 +01:00
Lan Tianyu
ab0fd674d6 ACPI / AC: Remove AC's proc directory.
AC's proc directory is not used and so remove it. Prepare for removing
/proc/acpi directory.

Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-16 01:23:15 +02:00
Zhang Rui
cc8ef52707 ACPI / AC: convert ACPI ac driver to platform bus
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-09-25 19:40:12 +02:00
Thomas Renninger
1696d9dc57 ACPI: Remove the old /proc/acpi/event interface
It is quite some time that this one has been deprecated.
Get rid of it.

Should some really important user be overseen, it may be reverted and
the userspace program worked on first, but it is time to do something
to get rid of this old stuff...

Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: Matthew Garrett <matthew.garrett@nebula.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-15 13:56:36 +02:00
Lan Tianyu
0ab5bb6493 ACPI / AC: Add sleep quirk for Thinkpad e530
The Thinkpad e530's BIOS notifies the AC device first and then
sleeps for certain amount of time before doing real work in the
EC event handler (_Qxx):

 Method (_Q27, 0, NotSerialized)
 {
       Notify (AC, 0x80)
       Sleep (0x03E8)
       Store (Zero, PWRS)
       PNOT ()
 }

This causes the AC driver to report an outdated AC state to user
space, because it reads the state information from the device while
the EC handler is sleeping.

Introduce a quirk to cause the AC driver to wait in acpi_ac_notify()
before calling acpi_ac_get_state() on systems known to have this
problem and add Thinkpad e530 to the list of quirky machines (with
a 1s delay which has been verified to be sufficient for that
machine).

[rjw: Changelog]
References: https://bugzilla.kernel.org/show_bug.cgi?id=45221
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-05-12 14:03:15 +02:00
Al Viro
d9dda78bad procfs: new helper - PDE_DATA(inode)
The only part of proc_dir_entry the code outside of fs/proc
really cares about is PDE(inode)->data.  Provide a helper
for that; static inline for now, eventually will be moved
to fs/proc, along with the knowledge of struct proc_dir_entry
layout.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-04-09 14:13:32 -04:00
Rafael J. Wysocki
51fac8388a ACPI: Remove useless type argument of driver .remove() operation
The second argument of ACPI driver .remove() operation is only used
by the ACPI processor driver and the value passed to that driver
through it is always available from the given struct acpi_device
object's removal_type field.  For this reason, the second ACPI driver
.remove() argument is in fact useless, so drop it.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Jiang Liu <jiang.liu@huawei.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
2013-01-26 00:37:24 +01:00
Rafael J. Wysocki
9069240480 ACPI / PM: Fix unused function warnings for CONFIG_PM_SLEEP
According to compiler warnings, several suspend/resume functions
in ACPI drivers are not used for CONFIG_PM_SLEEP unset, so add
#ifdefs to prevent them from being built in that case.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-08-10 13:35:32 +02:00
Linus Torvalds
476525004a Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull ACPI & power management update from Len Brown:
 "Re-write of the turbostat tool.
     lower overhead was necessary for measuring very large system when
     they are very idle.

  IVB support in intel_idle
     It's what I run on my IVB, others should be able to also:-)

  ACPICA core update
     We have found some bugs due to divergence between Linux and the
     upstream ACPICA base.  Most of these patches are to reduce that
     divergence to reduce the risk of future bugs.

  Some cpuidle updates, mostly for non-Intel
     More will be coming, as they depend on this part.

  Some thermal management changes needed by non-ACPI systems.

  Some _OST (OS Status Indication) updates for hot ACPI hot-plug."

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (51 commits)
  Thermal: Documentation update
  Thermal: Add Hysteresis attributes
  Thermal: Make Thermal trip points writeable
  ACPI/AC: prevent OOPS on some boxes due to missing check power_supply_register() return value check
  tools/power: turbostat: fix large c1% issue
  tools/power: turbostat v2 - re-write for efficiency
  ACPICA: Update to version 20120711
  ACPICA: AcpiSrc: Fix some translation issues for Linux conversion
  ACPICA: Update header files copyrights to 2012
  ACPICA: Add new ACPI table load/unload external interfaces
  ACPICA: Split file: tbxface.c -> tbxfload.c
  ACPICA: Add PCC address space to space ID decode function
  ACPICA: Fix some comment fields
  ACPICA: Table manager: deploy new firmware error/warning interfaces
  ACPICA: Add new interfaces for BIOS(firmware) errors and warnings
  ACPICA: Split exception code utilities to a new file, utexcep.c
  ACPI: acpi_pad: tune round_robin_time
  ACPICA: Update to version 20120620
  ACPICA: Add support for implicit notify on multiple devices
  ACPICA: Update comments; no functional change
  ...
2012-07-26 14:28:55 -07:00
Lan Tianyu
f197ac13f6 ACPI/AC: prevent OOPS on some boxes due to missing check power_supply_register() return value check
In the ac.c, power_supply_register()'s return value is not checked.

As a result, the driver's add() ops may return success
even though the device failed to initialize.

For example, some BIOS may describe two ACADs in the same DSDT.
The second ACAD device will fail to register,
but ACPI driver's add() ops returns sucessfully.
The ACPI device will receive ACPI notification and cause OOPS.

https://bugzilla.redhat.com/show_bug.cgi?id=772730

Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Len Brown <len.brown@intel.com>
2012-07-24 01:37:37 -04:00
Rafael J. Wysocki
ccda706980 ACPI: Use struct dev_pm_ops for power management in the AC driver
Make the ACPI AC adapter driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-01 13:31:00 +02:00