Commit Graph

3511 Commits

Author SHA1 Message Date
Rafael J. Wysocki f3fd0c8a7f ACPI: Allow ACPI handles of devices to be initialized in advance
Currently, the ACPI handles of devices are initialized from within
device_add(), by acpi_bind_one() called from acpi_platform_notify()
which first uses the .find_device() routine provided by the device's
bus type to find the matching device node in the ACPI namespace.
This is a source of some computational overhead and, moreover, the
correctness of the result depends on the implementation of
.find_device() which is known to fail occasionally for some bus types
(e.g. PCI).  In some cases, however, the corresponding ACPI device
node is known already before calling device_add() for the given
struct device object and the whole .find_device() dance in
acpi_platform_notify() is then simply unnecessary.

For this reason, make it possible to initialize the ACPI handles of
devices before calling device_add() for them.  Modify
acpi_platform_notify() to call acpi_bind_one() in advance to check
the device's existing ACPI handle and skip the .find_device()
search if that is successful.  Change acpi_bind_one() accordingly.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2012-11-21 00:21:39 +01:00
Masanari Iida 02582e9bcc treewide: fix typo of "suport" in various comments and Kconfig
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-11-19 14:16:09 +01:00
Kamil Iskra 4000e62615 ACPI / battery: Correct battery capacity values on Thinkpads
Add a quirk to correctly report battery capacity on 2010 and 2011
Lenovo Thinkpad models.

The affected models that I tested (x201, t410, t410s, and x220)
exhibit a problem where, when battery capacity reporting unit is mAh,
the values being reported are wrong.  Pre-2010 and 2012 models appear
to always report in mWh and are thus unaffected.  Also, in mid-2012
Lenovo issued a BIOS update for the 2011 models that fixes the issue
(tested on x220 with a post-1.29 BIOS).  No such update is available
for the 2010 models, so those still need this patch.

Problem description: for some reason, the affected Thinkpads switch
the reporting unit between mAh and mWh; generally, mAh is used when a
laptop is plugged in and mWh when it's unplugged, although a
suspend/resume or rmmod/modprobe is needed for the switch to take
effect.  The values reported in mAh are *always* wrong.  This does
not appear to be a kernel regression; I believe that the values were
never reported correctly.  I tested back to kernel 2.6.34, with
multiple machines and BIOS versions.

Simply plugging a laptop into mains before turning it on is enough to
reproduce the problem.  Here's a sample /proc/acpi/battery/BAT0/info
from Thinkpad x220 (before a BIOS update) with a 4-cell battery:

present:                 yes
design capacity:         2886 mAh
last full capacity:      2909 mAh
battery technology:      rechargeable
design voltage:          14800 mV
design capacity warning: 145 mAh
design capacity low:     13 mAh
cycle count:              0
capacity granularity 1:  1 mAh
capacity granularity 2:  1 mAh
model number:            42T4899
serial number:           21064
battery type:            LION
OEM info:                SANYO

Once the laptop switches the unit to mWh (unplug from mains, suspend,
resume), the output changes to:

present:                 yes
design capacity:         28860 mWh
last full capacity:      29090 mWh
battery technology:      rechargeable
design voltage:          14800 mV
design capacity warning: 1454 mWh
design capacity low:     200 mWh
cycle count:              0
capacity granularity 1:  1 mWh
capacity granularity 2:  1 mWh
model number:            42T4899
serial number:           21064
battery type:            LION
OEM info:                SANYO

Can you see how the values for "design capacity", etc., differ by a
factor of 10 instead of 14.8 (the design voltage of this battery)?
On the battery itself it says: 14.8V, 1.95Ah, 29Wh, so clearly the
values reported in mWh are correct and the ones in mAh are not.

My guess is that this problem has been around ever since those
machines were released, but because the most common Thinkpad
batteries are rated at 10.8V, the error (8%) is small enough that it
simply hasn't been noticed or at least nobody could be bothered to
look into it.

My patch works around the problem by adjusting the incorrectly
reported mAh values by "10000 / design_voltage".  The patch also has
code to figure out if it should be activated or not.  It only
activates on Lenovo Thinkpads, only when the unit is mAh, and, as an
extra precaution, only when the battery capacity reported through
ACPI does not match what is reported through DMI (I've never
encountered a machine where the first two conditions would be true
but the last would not, but better safe than sorry).

I've been using this patch for close to a year on several systems
without any problems.

References: https://bugzilla.kernel.org/show_bug.cgi?id=41062
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-16 22:28:58 +01:00
Rafael J. Wysocki 8a66790b78 ACPI / resources: Use AE_CTRL_TERMINATE to terminate resources walks
Currently acpi_dev_process_resource() returns AE_ABORT_METHOD
to terminate the acpi_walk_resources() it is called from if
the .preproc() routine provided by the caller of
acpi_dev_get_resources() initiating the resources walk returns
an error code.  It is better to use AE_CTRL_TERMINATE for this
purpose, however, so do that.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2012-11-16 21:55:48 +01:00
Yasuaki Ishimatsu bb74ac23b1 ACPI: create _SUN sysfs file
_SUN method provides the slot unique-ID in the ACPI namespace. And The value
is written in Advanced Configuration and Power Interface Specification as
follows:

"The _SUN value is required to be unique among the slots ofthe same type.
It is also recommended that this number match the slot number printed on
the physical slot whenever possible."

So if we can know the value, we can identify the physical position of the
slot in the system.

The patch creates "sun" file in sysfs for identifying physical position
of the slot.

Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Reviewed-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-16 02:56:59 +01:00
Lv Zheng ddc150f7a3 ACPI / PM: Add check preventing transitioning to non-D0 state from D3.
No power transitioning from D3 state up to a non-D0 state is allowed
so make acpi_device_set_power() fail and complain if such a transition
is attempted.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-16 02:46:28 +01:00
Wen Congyang 61d8eff144 ACPI / memhotplug: bind the memory device when the driver is being loaded
We had introduced acpi_hotmem_initialized to avoid strange add_memory fail
message.  But the memory device may not be used by the kernel, and the
device should be bound when the driver is being loaded.  Remove
acpi_hotmem_initialized to allow that the device can be bound when the
driver is being loaded.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-16 02:12:38 +01:00
Wen Congyang 6547947257 ACPI / memhotplug: don't allow to eject the memory device if it is being used
We eject the memory device even if it is in use.  It is very dangerous,
and it will cause the kernel to be panicked.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-16 02:10:37 +01:00
Wen Congyang e0b7b24dd9 ACPI / memhotplug: free memory device if acpi_memory_enable_device() failed
If acpi_memory_enable_device() fails, acpi_memory_enable_device() will
return a non-zero value, which means we fail to bind the memory device to
this driver.  So we should free memory device before
acpi_memory_device_add() returns.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-16 02:08:16 +01:00
Wen Congyang 386e52b955 ACPI / memhotplug: fix memory leak when memory device is unbound from acpi_memhotplug
We allocate memory to store acpi_memory_info, so we should free it before
freeing mem_device.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-16 02:06:06 +01:00
Wen Congyang 315bbae9c5 ACPI / memhotplug: deal with eject request in hotplug queue
The memory device can be removed by 2 ways:
 1. send eject request by SCI
 2. echo 1 >/sys/bus/pci/devices/PNP0C80:XX/eject

We handle the 1st case in the module acpi_memhotplug, and handle
the 2nd case in ACPI eject notification. This 2 events may happen
at the same time, so we may touch acpi_memory_device.res_list at
the same time. This patch reimplements memory-hotremove support
through an ACPI eject notification. Now the memory device is
offlined and hotremoved only in the function acpi_memory_device_remove()
which is protected by device_lock().

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Reviewed-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-16 02:04:05 +01:00
Yasuaki Ishimatsu 19387b27e4 ACPI / memory-hotplug: add memory offline code to acpi_memory_device_remove()
The memory device can be removed by 2 ways:
 1. send eject request by SCI
 2. echo 1 >/sys/bus/pci/devices/PNP0C80:XX/eject

In the 1st case, acpi_memory_disable_device() will be called.
In the 2nd case, acpi_memory_device_remove() will be called.
acpi_memory_device_remove() will also be called when we unbind the
memory device from the driver acpi_memhotplug or a driver initialization
fails.

acpi_memory_disable_device() has already implemented a code which
offlines memory and releases acpi_memory_info struct. But
acpi_memory_device_remove() has not implemented it yet.

So the patch move offlining memory and releasing acpi_memory_info struct
codes to a new function acpi_memory_remove_memory(). And it is used by both
acpi_memory_device_remove() and acpi_memory_disable_device().

Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-16 01:56:01 +01:00
Bob Moore 413fc3f592 ACPICA: AcpiGetObjectInfo: Add support for ACPI 5 _SUB method
Now calls _SUB in addition to the other ID methods: _HID, _CID,
and _UID.

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>
2012-11-15 00:31:30 +01:00
Bob Moore 17b1f45a68 ACPICA: Update for 64-bit generation of recent error message changes
Fix for errors on printf changes on 64-bit platforms and gcc.

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>
2012-11-15 00:31:30 +01:00
Bob Moore 47abd13ccf ACPICA: Fix externalize name to complete migration to ACPI_MOVE_NAME
Fix for name segment copy and validation.

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>
2012-11-15 00:31:29 +01:00
Bob Moore 97171c6be3 ACPICA: Add starting offset parameter to common dump buffer routine
Rename the dump buffer routines. Offset parameter can specify the
buffer starting offset that is used when displaying each line of
the buffer.

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>
2012-11-15 00:31:29 +01:00
Bob Moore eed9525ac4 ACPICA: Deploy ACPI_MOVE_NAME across ACPICA source base
Replaces instances of strncpy(...,4) for ACPI_NAMEs.
ACPI_MOVE_NAME optimizes these to a single 32-bit copy on machines
that support misaligned transfers.

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>
2012-11-15 00:31:29 +01:00
Bob Moore 00eb32550f ACPICA: Enhance error reporting for invalid opcodes and bad ACPI_NAMEs
For disassembler, dump the 48 bytes surrounding the invalid
opcode.  Fix incorrect table offset reported for invalid opcodes.
Report original 32-bit value for bad ACPI_NAMEs.

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>
2012-11-15 00:31:28 +01:00
Bob Moore d8da9151bb ACPICA: AcpiExec: Improve algorithm for tracking memory leaks
Add some intelligence to the code that maintains the global
list of allocated memory. The list is now ordered by allocated
memory address, significantly improving performance.  When running
AcpiExec on the ASLTS test suite, speed improvements of 3X to 5X
are seen, depending on the platform and/or the environment.

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>
2012-11-15 00:31:27 +01:00
Bob Moore 2489ef0184 ACPICA: Add debug print message for mutex objects that are force-released
At control method termination, any currently acquired mutex
objects are force-released. Add a new message for each one that
is released.

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>
2012-11-15 00:31:27 +01:00
Feng Tang bee6dc39cf ACPICA: Resource Mgr: Small fix for buffer size calculation
Fixes a one byte error in the output buffer calculation.
Feng Tang - ACPICA BZ 849:
https://www.acpica.org/bugzilla/show_bug.cgi?id=849

Signed-off-by: Feng Tang <feng.tang@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>
2012-11-15 00:31:26 +01:00
Bob Moore 73a3090a21 ACPICA: Remove extra spaces after periods within comments
This makes all comments consistent.

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>
2012-11-15 00:31:26 +01:00
Bob Moore b9e1769357 ACPICA: Update local C library module comments for ASCII table
Improve the commenting of the table.

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>
2012-11-15 00:31:25 +01:00
Robert Moore 267d672ab3 ACPICA: Fix for predefined name loop during ACPICA initialization
If a name cannot be created, simply continue on to the next name.
Do not attempt to use the name, do not abort.  With assistance
from Colin Ian King.

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>
2012-11-15 00:31:25 +01:00
Bob Moore 691fda5058 ACPICA: Fix some typos in comments
No functional changes.  Some small fixes within commments. Colin
Ian King.

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>
2012-11-15 00:31:25 +01:00
Bob Moore 4f3ca640e9 ACPICA: ACPICA core: Cleanup empty lines at file start and end
Maintenance for source code consistency.

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>
2012-11-15 00:31:24 +01:00
Bob Moore 68aafc3516 ACPICA: Audit/update for ACPICA return macros and debug depth counter
1) Ensure that all functions that use the various TRACE macros
   also use the appropriate ACPICA return macros.
2) Ensure that all normal return statements surround the return
   expression (value) with parens.

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>
2012-11-15 00:31:24 +01:00
Lv Zheng 86ff0e508f ACPICA: Fix unmerged acmacros.h divergences.
The 20121018 release depends on some unmerged acmaros.h fixes.
This patch includes the fixes made on acmaros.h that will not affect
the generated vmlinux binary.

This patch will not affect the generated vmlinux binary.
This will decrease 157 lines of 20120913 divergence.diff.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:31:23 +01:00
Lv Zheng 1f86e8c1c9 ACPICA: Fix indent caused divergences.
New version of "indent" program will generate different outputs that
will lead to the divergences between the Linux and the ACPICA.
This patch fixes such divergences caused by the "indent" program.
The version of the "indent" used for this patch is "GNU indent 2.2.11".

This patch will not affect the generated vmlinux binary.
This will decrease 581 lines of 20120913 divergence.diff.

Signed-off-by: Robert 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>
2012-11-15 00:31:23 +01:00
Lv Zheng 644ef74e6d ACPICA: Fix AcpiSrc caused divergences.
There are definitions that can been converted into new styles by
the recent AcpiSrc while they remain the old styles in the Linux.
This patch fixes those definitions that will be converted by the
AcpiSrc.

This patch will not affect the generated vmlinux binary.
This will decrease 97 lines of 20120913 divergence.diff.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:31:23 +01:00
Lv Zheng 78e25fef27 ACPICA: Fix divergences of definition conflicts.
There are conflicts in the "acpi_device_id*" definitions between the
Linux and the ACPICA.  The definitions of acpi_device_id* in ACPICA
have been changed to the "acpi_pnp_device_id*".  This patch changes
the corresponding "acpica_device_id*" definitiions in the Linux.

This patch will not affect the generated vmlinx binary.
This will decrease 298 lines of 20120913 divergence.diff.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:31:22 +01:00
Lv Zheng f540fadf29 ACPICA: Fix unmerged debugger divergences.
Debugger improvements in ACPICA are always ignored by ACPICA Linux
release.  This will lead to divergences between Linux and ACPICA.
This patch fixes such unmerged debugger updates.

Following patches are included:
1. Fixed a couple compiler warnings for extra extern
   Wed, 14 Mar 2007 21:12:19 +0000
2. Cleanup for internal Reference Object.
   Wed, 27 Aug 2008 10:11:30 -0700
3. Debugger: Lock method args for multithread command.
   Fri, 24 Apr 2009 12:28:49 -0700
4. Debugger: Add max count argument for Batch command.
   Tue, 29 Sep 2009 12:31:58 -0700
5. Add new host interfaces for _OSI support.
   Thu, 5 Aug 2010 14:18:28 -0700
6. Increase debugger buffer size for method return objects.
   Wed, 17 Nov 2010 13:48:30 -0800
7. Debugger: Add command to display status of global handlers.
   Tue, 25 Jan 2011 13:47:58 -0800
8. Debugger: Split large dbcmds.c file.
   Wed, 26 Jan 2011 13:03:41 -0800
9. Debugger/AcpiExec: Add support to pass complex args to methods.
   Tue, 17 May 2011 13:33:39 -0700
10.Debugger: Add Template command to dump resource templates.
   Fri, 28 Oct 2011 14:18:51 -0700
11.Support for custom ACPICA build for ACPI 5.0 reduced hardware.
   Wed, 1 Feb 2012 13:18:17 -0800
12.Debugger: Improve command help support.
   Wed, 15 Feb 2012 07:59:26 -0800
13.Update ACPI_HW_DEPENDENT* macro invocations.
   Wed, 15 Feb 2012 08:14:08 -0800
14.Debugger: Rename function to simplify source code conversion.
   Wed, 13 Jun 2012 14:23:06 -0700
15.Debugger: Enhance "Tables" and "Unload" commands.
   Fri, 29 Jun 2012 13:10:58 -0700
16.Debugger: update prototype for AcpiDbSleep function.
   Fri, 17 Aug 2012 13:43:02 -0700

This patch will not affect the generated vmlinx binary.
This will decrease 264 lines of 20120913 divergence.diff.

Signed-off-by: Robert 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>
2012-11-15 00:31:22 +01:00
Lv Zheng 6d33b6be17 ACPICA: Fix unmerged utility divergences.
Utility improvements in ACPICA are partial ignored by ACPICA Linux
release.  This will lead to divergences between Linux and ACPICA.
This patch ports the entire "utility" into Linux and makes them
igored in the compilation stage by "ACPI_FUTURE_USAGE".
The following "Utility" files have been ported into the Linux:
  drivers/acpi/uttrack.c
  drivers/acpi/utcache.c
  drivers/acpi/utids.c

This patch will not affect the generated vmlinx binary.
This will decrease 274 lines of 20120913 divergence.diff.

Signed-off-by: Robert 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>
2012-11-15 00:31:21 +01:00
Bob Moore 45dcd31547 Cleanup of invalid ACPI name handling and repair
Implemented a change/cleanup for the handling of invalid ACPI names.
 Names are now validated and repaired only when
 1) entering a new name into the namespace and
 2) disassembling a named AML opcode. A warning is only displayed in
    debug mode or when the interpreter is in "strict" mode, since some
    working machines do in fact contain invalid ACPI names.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:31:21 +01:00
Rafael J. Wysocki 8e345c991c ACPI: Centralized processing of ACPI device resources
Currently, whoever wants to use ACPI device resources has to call
acpi_walk_resources() to browse the buffer returned by the _CRS
method for the given device and create filters passed to that
routine to apply to the individual resource items.  This generally
is cumbersome, time-consuming and inefficient.  Moreover, it may
be problematic if resource conflicts need to be resolved, because
the different users of _CRS will need to do that in a consistent
way.  However, if there are resource conflicts, the ACPI core
should be able to resolve them centrally instead of relying on
various users of acpi_walk_resources() to handle them correctly
together.

For this reason, introduce a new function, acpi_dev_get_resources(),
that can be used by subsystems to obtain a list of struct resource
objects corresponding to the ACPI device resources returned by
_CRS and, if necessary, to apply additional preprocessing routine
to the ACPI resources before converting them to the struct resource
format.

Make the ACPI code that creates platform device objects use
acpi_dev_get_resources() for resource processing instead of executing
acpi_walk_resources() twice by itself, which causes it to be much
more straightforward and easier to follow.

In the future, acpi_dev_get_resources() can be extended to meet
the needs of the ACPI PNP subsystem and other users of _CRS in
the kernel.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2012-11-15 00:30:21 +01:00
Rafael J. Wysocki 97d69dc061 ACPI / platform: Use common ACPI device resource parsing routines
Use common routines in drivers/acpi/resource.c to parse ACPI device
resources while creating platform device objects.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2012-11-15 00:30:12 +01:00
Rafael J. Wysocki 046d9ce682 ACPI: Move device resources interpretation code from PNP to ACPI core
Move some code used for parsing ACPI device resources from the PNP
subsystem to the ACPI core, so that other bus types (platform, SPI,
I2C) can use the same routines for parsing resources in a consistent
way, without duplicating code.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2012-11-15 00:30:01 +01:00
Mika Westerberg b4b6cae2f3 ACPI / platform: use ACPI device name instead of _HID._UID
Using _UID makes the ACPI platform bus code depend on BIOS to get it
right. If it doesn't we fail to create the platform device as the name
should be unique.

The ACPI core already makes a unique name when it first creates the ACPI
device so we can use that same name as the platform device name instead of
trusting that the BIOS sets the _UIDs correctly.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:28:02 +01:00
Mika Westerberg 91e5687805 ACPI: Add support for platform bus type
With ACPI 5 it is now possible to enumerate traditional SoC
peripherals, like serial bus controllers and slave devices behind
them.  These devices are typically based on IP-blocks used in many
existing SoC platforms and platform drivers for them may already
be present in the kernel tree.

To make driver "porting" more straightforward, add ACPI support to
the platform bus type.  Instead of writing ACPI "glue" drivers for
the existing platform drivers, register the platform bus type with
ACPI to create platform device objects for the drivers and bind the
corresponding ACPI handles to those platform devices.

This should allow us to reuse the existing platform drivers for the
devices in question with the minimum amount of modifications.

This changeset is based on Mika Westerberg's and Mathias Nyman's
work.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:28:01 +01:00
Andy Shevchenko 35e92b78c1 ACPI / x86: Export acpi_[un]register_gsi()
These functions might be called from modules as well so make sure
they are exported.

In addition, implement empty version of acpi_unregister_gsi() and
remove the one from pci_irq.c.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:28:00 +01:00
Mika Westerberg cf761af9ee ACPI: Provide generic functions for matching ACPI device nodes
Introduce function acpi_match_device() allowing callers to match
struct device objects with populated acpi_handle fields against
arrays of ACPI device IDs.  Also introduce function
acpi_driver_match_device() using acpi_match_device() internally and
allowing callers to match a struct device object against an array of
ACPI device IDs provided by a device driver.

Additionally, introduce macro ACPI_PTR() that may be used by device
drivers to escape pointers to data structures whose definitions
depend on CONFIG_ACPI.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:28:00 +01:00
Mika Westerberg 06f64c8f23 driver core / ACPI: Move ACPI support to core device and driver types
With ACPI 5 we are starting to see devices that don't natively support
discovery but can be enumerated with the help of the ACPI namespace.
Typically, these devices can be represented in the Linux device driver
model as platform devices or some serial bus devices, like SPI or I2C
devices.

Since we want to re-use existing drivers for those devices, we need a
way for drivers to specify the ACPI IDs of supported devices, so that
they can be matched against device nodes in the ACPI namespace.  To
this end, it is sufficient to add a pointer to an array of supported
ACPI device IDs, that can be provided by the driver, to struct device.

Moreover, things like ACPI power management need to have access to
the ACPI handle of each supported device, because that handle is used
to invoke AML methods associated with the corresponding ACPI device
node.  The ACPI handles of devices are now stored in the archdata
member structure of struct device whose definition depends on the
architecture and includes the ACPI handle only on x86 and ia64. Since
the pointer to an array of supported ACPI IDs is added to struct
device_driver in an architecture-independent way, it is logical to
move the ACPI handle from archdata to struct device itself at the same
time.  This also makes code more straightforward in some places and
follows the example of Device Trees that have a poiter to struct
device_node in there too.

This changeset is based on Mika Westerberg's work.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:28:00 +01:00
Wen Congyang 54c4c7db6c ACPI / memory-hotplug: call acpi_bus_trim() to remove memory device
The memory device has been ejected and powoffed, so we can call
acpi_bus_trim() to remove the memory device from acpi bus.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:22:27 +01:00
Randy Dunlap acacb5f211 ACPI: add newline in power.c message
Add newline to printk so that the message is on a line
by itself and not merged with something unrelated to it.

Reported-by: Toralf Förster <toralf.foerster@gmx.de>
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:18:21 +01:00
Rafael J. Wysocki 3ae45a27df ACPI: Make seemingly useless check in osl.c more understandable
There is a seemingly useless check in drivers/acpi/osl.c added by
commit bc73675 (ACPI: fixes a false alarm from lockdep), which really
is necessary to avoid false positive lockdep complaints.  Document
this and rearrange the code related to it so that it makes fewer
checks.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
2012-11-15 00:18:20 +01:00
Toshi Kani c5b18e22e7 ACPI: Add ACPI CPU hot-remove support
Added support of CPU hot-remove via an ACPI eject notification.
It calls acpi_bus_hot_remove_device(), which shares the same code
path with the sysfs eject operation.  acpi_os_hotplug_execute()
runs the hot-remove operation in kacpi_hotplug_wq and serializes
it between ACPI hot-remove and sysfs eject requests.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Tested-by: IgorMammedov <imammedo@redhat.com>
Tested-by: Vijay Mohan Pandarathil <vijaymohan.pandarathil@hp.com>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:16:04 +01:00
Toshi Kani 61622accd0 ACPI: Export functions for hot-remove
Exported acpi_os_hotplug_execute() and acpi_bus_hot_remove_device()
so that they can be called from modules for hot-remove operations.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:16:04 +01:00
Lv Zheng 923d4a45a9 ACPI: Add user space interface for identification objects
ACPI devices are glued with physical devices through _ADR object, ACPI
enumerated devices are identified with _UID object.  Currently we can
observe _HID/_CID through sysfs interfaces (hid/modalias), but there's
no way for us to check _ADR/_UID from user space.  This patch closes
this gap for ACPI developers and users.

[rjw: Modified the subject and changelog slightly.]
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:16:03 +01:00
Lv Zheng ccf7804026 ACPI: Add _UID support for ACPI devices.
The _UID object is optional, but is required when the device has no
other way to report a persistent unique device ID.
This patch is required for ACPI 5.0 ACPI enumerated IP cores.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rui Zhang <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:16:03 +01:00
Kristen Carlson Accardi 1bad2f19f7 ACPI / Sleep: add acpi_sleep=nonvs_s3 parameter
The ACPI specificiation would like us to save NVS at hibernation time,
but makes no mention of saving NVS over S3.  Not all versions of
Windows do this either, and it is clear that not all machines need NVS
saved/restored over S3.  Allow the user to improve their suspend/resume
time by disabling the NVS save/restore at S3 time, but continue to do
the NVS save/restore for S4 as specified.

Signed-off-by: Kristen Carlson Accardi <kristen@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:16:02 +01:00
Toshi Kani f4fa0e018a ACPI: Remove unused lockable in acpi_device_flags
Removed lockable in struct acpi_device_flags since it is no
longer used by any code. acpi_bus_hot_remove_device() cannot
use this flag because acpi_bus_trim() frees up its acpi_device
object. Furthermore, the dock driver calls _LCK method without
using this lockable flag.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:16:02 +01:00
Toshi Kani b3c450c380 ACPI: Fix stale pointer access to flags.lockable
During hot-remove, acpi_bus_hot_remove_device() calls ACPI _LCK
method when device->flags.lockable is set. However, this device
pointer is stale since the target acpi_device object has been
already kfree'd by acpi_bus_trim().

The flags.lockable indicates whether or not this ACPI object
implements _LCK method. Fix the stable pointer access by replacing
it with acpi_get_handle() to check if _LCK is implemented.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:16:01 +01:00
Tang Chen 594df89a59 ACPI: Fix a hard coding style when determining if a device is a container, v3
"ACPI0004","PNP0A05" and "PNP0A06" are all defined in array
container_device_ids[], so use it, but not the hard coding style.

Also, introduce a new API is_container_device() to determine if a
device is a container device.

Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Reviewed-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:16:01 +01:00
Yasuaki Ishimatsu 5e5041f352 ACPI / processor: prevent cpu from becoming online
Even if acpi_processor_handle_eject() offlines cpu, there is a chance
to online the cpu after that. So the patch closes the window by using
get/put_online_cpus().

Why does the patch change _cpu_up() logic?

The patch cares the race of hot-remove cpu and _cpu_up(). If the patch
does not change it, there is the following race.

hot-remove cpu                         |  _cpu_up()
------------------------------------- ------------------------------------
call acpi_processor_handle_eject()     |
     call cpu_down()                   |
     call get_online_cpus()            |
                                       | call cpu_hotplug_begin() and stop here
     call arch_unregister_cpu()        |
     call acpi_unmap_lsapic()          |
     call put_online_cpus()            |
                                       | start and continue _cpu_up()
     return acpi_processor_remove()    |
continue hot-remove the cpu            |

So _cpu_up() can continue to itself. And hot-remove cpu can also continue
itself. If the patch changes _cpu_up() logic, the race disappears as below:

hot-remove cpu                         | _cpu_up()
-----------------------------------------------------------------------
call acpi_processor_handle_eject()     |
     call cpu_down()                   |
     call get_online_cpus()            |
                                       | call cpu_hotplug_begin() and stop here
     call arch_unregister_cpu()        |
     call acpi_unmap_lsapic()          |
          cpu's cpu_present is set     |
          to false by set_cpu_present()|
     call put_online_cpus()            |
                                       | start _cpu_up()
                                       | check cpu_present() and return -EINVAL
     return acpi_processor_remove()    |
continue hot-remove the cpu            |

Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Reviewed-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:16:00 +01:00
Josh 73d4511a5f ACPI: strict_strtoul() and printk() cleanup in acpi_pad
Replace a few calls to strict_strtoul() in acpi_pad.c with kstrtoul()
and use pr_warn() instead of printk() in the same file.

[rjw: Modified the subject and changelog.]
Signed-off-by: Josh Taylor <joshua.taylor0@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:16:00 +01:00
Toshi Kani 8ab0ab2570 ACPI: dock: Remove redundant ACPI NS walk
Combined two ACPI namespace walks, which look for dock stations
and then bays separately, into a single walk.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:16:00 +01:00
Feng Tang a3cd8d2789 ACPI / EC: Don't count a SCI interrupt as a false one
Currently when advance_transaction() is called in EC interrupt handler,
if there is nothing driver can do with the interrupt, it will be taken
as a false one.

But this is not always true, as there may be a SCI EC interrupt fired
during normal read/write operation, which should not be counted as a
false one. This patch fixes the problem.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:15:59 +01:00
Feng Tang b76b51ba0c ACPI / EC: Add more debug info and trivial code cleanup
Add more debug info for EC transaction debugging, like the interrupt
status register value, the detail info of a EC transaction.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:15:59 +01:00
Feng Tang f351d027ee ACPI / EC: Cleanup the member name for spinlock/mutex in struct
Current member names for mutex/spinlock are a little confusing.

Change the
{
	struct mutex lock;
	spinlock_t curr_lock;
}
to
{
	struct mutex mutex;
	spinlock_t lock;
}

So that the code is cleaner and easier to read.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:15:59 +01:00
Rafael J. Wysocki e5cc8ef312 ACPI / PM: Provide ACPI PM callback routines for subsystems
Some bus types don't support power management natively, but generally
there may be device nodes in ACPI tables corresponding to the devices
whose bus types they are (under ACPI 5 those bus types may be SPI,
I2C and platform).  If that is the case, standard ACPI power
management may be applied to those devices, although currently the
kernel has no means for that.

For this reason, provide a set of routines that may be used as power
management callbacks for such devices.  This may be done in three
different ways.

 (1) Device drivers handling the devices in question may run
     acpi_dev_pm_attach() in their .probe() routines, which (on
     success) will cause the devices to be added to the general ACPI
     PM domain and ACPI power management will be used for them going
     forward.  Then, acpi_dev_pm_detach() may be used to remove the
     devices from the general ACPI PM domain if ACPI power management
     is not necessary for them any more.

 (2) The devices' subsystems may use acpi_subsys_runtime_suspend(),
     acpi_subsys_runtime_resume(), acpi_subsys_prepare(),
     acpi_subsys_suspend_late(), acpi_subsys_resume_early() as their
     power management callbacks in the same way as the general ACPI
     PM domain does that.

 (3) The devices' drivers may execute acpi_dev_suspend_late(),
     acpi_dev_resume_early(), acpi_dev_runtime_suspend(),
     acpi_dev_runtime_resume() from their power management callbacks
     as appropriate, if that's absolutely necessary, but it is not
     recommended to do that, because such drivers may not work
     without ACPI support as a result.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:15:18 +01:00
Rafael J. Wysocki a6ae7594b1 ACPI / PM: Move device PM functions related to sleep states
Introduce helper function returning the target sleep state of the
system and use it to move the remaining device power management
functions from sleep.c to device_pm.c.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:15:18 +01:00
Rafael J. Wysocki 078eb12648 ACPI / PM: Provide device PM functions operating on struct acpi_device
If the caller of acpi_bus_set_power() already has a pointer to the
struct acpi_device object corresponding to the device in question, it
doesn't make sense for it to go through acpi_bus_get_device(), which
may be costly, because it involves acquiring the global ACPI
namespace mutex.

For this reason, export the function operating on struct acpi_device
objects used internally by acpi_bus_set_power(), so that it may be
called instead of acpi_bus_set_power() in the above case, and change
its name to acpi_device_set_power().

Additionally, introduce two inline wrappers for checking ACPI PM
capabilities of devices represented by struct acpi_device objects.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:15:18 +01:00
Rafael J. Wysocki dee8370cc8 ACPI / PM: Split device wakeup management routines
Two device wakeup management routines in device_pm.c and sleep.c,
acpi_pm_device_run_wake() and acpi_pm_device_sleep_wake(), take a
device pointer argument and use it to obtain the ACPI handle of the
corresponding ACPI namespace node.  That handle is then used to get
the address of the struct acpi_device object corresponding to the
struct device passed as the argument.

Unfortunately, that last operation may be costly, because it involves
taking the global ACPI namespace mutex, so it shouldn't be carried
out too often.  However, the callers of those routines usually call
them in a row with acpi_pm_device_sleep_state() which also takes that
mutex for the same reason, so it would be more efficient if they ran
acpi_bus_get_device() themselves to obtain a pointer to the struct
acpi_device object in question and then passed that pointer to the
appropriate PM routines.

To make that possible, split each of the PM routines mentioned above
in two parts, one taking a struct acpi_device pointer argument and
the other implementing the current interface for compatibility.

Additionally, change acpi_pm_device_run_wake() to actually return
an error code if there is an error while setting up runtime remote
wakeup for the device.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:15:17 +01:00
Rafael J. Wysocki cd7bd02d31 ACPI / PM: Move runtime remote wakeup setup routine to device_pm.c
The ACPI function for setting up devices to do runtime remote
wakeup is now located in drivers/acpi/sleep.c, but
drivers/acpi/device_pm.c is a more logical place for it, so move it
there.

No functional changes should result from this modification.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:15:17 +01:00
Rafael J. Wysocki 86b3832c64 ACPI / PM: Move device power state selection routine to device_pm.c
The ACPI function for choosing device power state is now located
in drivers/acpi/sleep.c, but drivers/acpi/device_pm.c is a more
logical place for it, so move it there.

However, instead of moving the function entirely, move its core only
under a different name and with a different list of arguments, so
that it is more flexible, and leave a wrapper around it in the
original location.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:15:16 +01:00
Rafael J. Wysocki ec2cd81ccf ACPI / PM: Move routines for adding/removing device wakeup notifiers
ACPI routines for adding and removing device wakeup notifiers are
currently defined in a PCI-specific file, but they will be necessary
for non-PCI devices too, so move them to a separate file under
drivers/acpi and rename them to indicate their ACPI origins.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:15:16 +01:00
Rafael J. Wysocki bdda27fb98 ACPI / PM: Fix device PM kernedoc comments and #ifdefs
The kerneldoc comments for acpi_pm_device_sleep_state(),
acpi_pm_device_run_wake(), and acpi_pm_device_sleep_wake() are
outdated or otherwise inaccurate and/or don't follow the common
kerneldoc patterns, so fix them.

Additionally, notice that acpi_pm_device_run_wake() should be under
CONFIG_PM_RUNTIME rather than under CONFIG_PM_SLEEP, so fix that too.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-15 00:15:16 +01:00
Rafael J. Wysocki dea553e3fc Merge branch 'pm-qos' into acpi-dev-pm
Material in the 'acpi-dev-pm' branch depends on 'pm-qos' commits.
2012-11-15 00:13:50 +01:00
Bjorn Helgaas 7db78a9c86 Merge branch 'pci/misc' into next
* pci/misc:
  PCI/ACPI: Notify PCI devices when their power resource is turned on
  PCI: Add GPL license for drivers/pci/ioapic module
  PCI: Fix bit definitions of PCI_EXP_LNKCAP2 register
2012-11-13 14:34:06 -07:00
Huang Ying 71fbad6c9a PCI/ACPI: Notify PCI devices when their power resource is turned on
This patch reduces power consumption by allowing idle devices to go to a
low power state after another device on the same power resource has been
awakened.

A power resource may be shared by multiple devices.  When all devices
sharing a power resource are put into D3_COLD state, the power resource
will be turned off.  When one of the devices is awakened, the power
resource will be turned on and all devices sharing it will be powered on to
D0uninitialized state.  These devices should be resumed, so that they have
the opportunity to go to low power state later.

[bhelgaas: changelog]
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-11-13 11:49:36 -07:00
Taku Izumi 8c33f51df4 PCI/ACPI: Request _OSC control before scanning PCI root bus
This patch moves up the code block to request _OSC control in order to
separate ACPI work and PCI work in acpi_pci_root_add().

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-11-07 09:58:46 -07:00
Taku Izumi 642c92da36 PCI: Don't pass pci_dev to pci_ext_cfg_avail()
pci_ext_cfg_avail() doesn't use the "struct pci_dev *" passed to
it, and there's no requirement that a host bridge even be represented
by a pci_dev.  This drops the pci_ext_cfg_avail() parameter.

[bhelgaas: changelog]
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-11-07 09:43:28 -07:00
Bjorn Helgaas d4761ba2d6 PCI/ACPI: Add _PRT interrupt routing info before enumerating devices
We used to add the _PRT after enumerating devices behind a new host
bridge.  This moves the _PRT addition *before* the enumeration, since
it no longer depends on the struct pci_bus existing.  This is one
step towards consolidating the .add/.start methods.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Taku Izumi <izumim.taku@jp.fujitsu.com>
2012-11-05 16:10:16 -07:00
Bjorn Helgaas 79c4412298 ACPI: Pass segment/bus to _PRT add/del so they don't depend on pci_bus
This effectively reverts 859a3f86ca ("ACPI: simplify
acpi_pci_irq_add_prt() API") and d9efae3688 ("ACPI: simplify
acpi_pci_irq_del_prt() API").

The reason is to disentangle these routines from the struct pci_bus.
We want to be able to add the _PRT before the struct pci_bus
exists, and delete the _PRT after we've removed the pci_bus.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
2012-11-05 15:54:22 -07:00
Durgadoss R 50125a9b27 Thermal: Pass zone parameters as argument to tzd_register
This patch adds the thermal zone parameter as an argument to
the tzd_register() function call; and updates other drivers
using this function.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2012-11-05 13:59:57 +08:00
Yinghai Lu f426cef3bc PCI/ACPI: Remove acpi_root_driver in reverse order
Call the sub-driver .remove() methods in the reverse order of the
.add() methods for symmetry.

[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-03 16:26:37 -06:00
Yinghai Lu 13b6a91640 PCI/ACPI: Delete host bridge _PRT during hot remove path
Corresponding to add path.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-03 16:26:37 -06:00
Yinghai Lu 9738a1fd21 PCI/ACPI: Make acpi_pci_root_remove() stop/remove pci root bus
It will call pci_stop_and_remove_bus() to stop/remove pci root bus.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
CC: Len Brown <lenb@kernel.org>
CC: linux-acpi@vger.kernel.org
2012-11-03 16:26:37 -06:00
Yinghai Lu 62a08c5a31 PCI/ACPI: Assign unassigned resource for hot-added root bus
After we get hot-added IOAPIC registered.
pci_enable_bridges() will try to enable IOAPIC IRQ for PCI bridges.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-03 16:20:38 -06:00
Igor Murzov fba4e08736 ACPI video: Ignore errors after _DOD evaluation.
There are systems where video module known to work fine regardless
of broken _DOD and ignoring returned value here doesn't cause
any issues later. This should fix brightness controls on some laptops.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=47861

Signed-off-by: Igor Murzov <e-mail@date.by>
Reviewed-by: Sergey V <sftp.mtuci@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2012-11-03 09:52:54 +08:00
Alan Cox 879dca019d ACPI: missing break
We handle NOTIFY_THROTTLING so don't then fall through to unsupported event.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-10-26 01:05:56 +02:00
Rafael J. Wysocki 8b713a88cc PM / ACPI: Take device PM QoS flags into account
Make ACPI power management routines and PCI power management
routines depending on ACPI take device PM QoS flags into account
when deciding what power state to put the device into.

In particular, after this change acpi_pm_device_sleep_state() will
not return ACPI_STATE_D3_COLD as the deepest available low-power
state if PM_QOS_FLAG_NO_POWER_OFF is requested for the device and it
will not require remote wakeup to work for the device in the returned
low-power state if there is at least one PM QoS flags request for the
device, but PM_QOS_FLAG_REMOTE_WAKEUP is not requested for it.

Accordingly, acpi_pci_set_power_state() will refuse to put the
device into D3cold if PM_QOS_FLAG_NO_POWER_OFF is requested for it.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Jean Pihet <j-pihet@ti.com>
Reviewed-by: Huang Ying <ying.huang@intel.com>
2012-10-24 02:08:38 +02:00
Jesper Juhl 2978af545b ACPI: Fix memory leak in acpi_bind_one()
Memory is allocated with kzalloc() and assigned to
'physical_node'. Then 'physical_node->node_id' is initialized with a
call to 'find_first_zero_bit()', if that results in a value greater
than ACPI_MAX_PHYSICAL_NODE we'll end up jumping to the 'err:' label
and there leave the function and let 'physical_node' go out of scope
and leak the memory we allocated.
This patch fixes the leak by simply freeing the unused/unneeded memory
pointed to by 'physical_node' just before we jump to 'err:'.

[rjw: The problem has been introduced by commit 1033f90 (ACPI: Allow
 ACPI binding with USB-3.0 hub), which is new in 3.7-rc.]

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Reviewed-by: Toshi Kani <toshi.kani@hp.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-10-23 00:53:58 +02:00
Matthew Garrett 4033741ff9 ACPI: Reorder IPMI driver before any other ACPI drivers
Drivers may make calls that require the ACPI IPMI driver to have been
initialised already, so make sure that it appears earlier in the build
order.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-16 18:07:12 -07:00
Len Brown d1d4a81b84 Merge branches 'fixes-for-37', 'ec' and 'thermal' into release 2012-10-09 01:47:35 -04:00
Len Brown 29b19e2504 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux into thermal
Conflicts:
	drivers/staging/omap-thermal/omap-thermal-common.
		OMAP supplied dummy TC1 and TC2,
		at the same time that the thermal tree removed them
		from thermal_zone_device_register()

	drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
		propogate the upstream MAX_IDR_LEVEL re-name
			to prevent a build failure

	Previously-fixed-by: Stephen Rothwell <sfr@canb.auug.org.au>

Signed-off-by: Len Brown <len.brown@intel.com>
2012-10-09 01:35:52 -04:00
Wei Yongjun e8b1b59dc8 cpuidle / ACPI: fix potential NULL pointer dereference
The dereference should be moved below the NULL test.

dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Len Brown <len.brown@intel.com>
2012-10-08 22:51:27 -04:00
Linus Torvalds d8dc91b753 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pul ACPI & Power Management updates from Len Brown:
 - acpidump utility added
 - intel_idle driver now supports IVB Xeon
 - turbostat utility can now count SMIs
 - ACPI can now bind to USB3 hubs
 - misc fixes

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (49 commits)
  ACPI: Add new sysfs interface to export device description
  ACPI: Harden acpi_table_parse_entries() against BIOS bug
  tools/power/turbostat: add option to count SMIs, re-name some options
  tools/power turbostat: add [-d MSR#][-D MSR#] options to print counter deltas
  intel_idle: enable IVB Xeon support
  tools/power turbostat: add [-m MSR#] option
  tools/power turbostat: make -M output pretty
  tools/power turbostat: print more turbo-limit information
  tools/power turbostat: delete unused line
  tools/power turbostat: run on IVB Xeon
  tools/power/acpi/acpidump: create acpidump(8), local make install targets
  tools/power/acpi/acpidump: version 20101221 - find dynamic tables in sysfs
  ACPI: run _OSC after ACPI_FULL_INITIALIZATION
  tools/power/acpi/acpidump: create acpidump(8), local make install targets
  tools/power/acpi/acpidump: version 20101221 - find dynamic tables in sysfs
  tools/power/acpi/acpidump: version 20071116
  tools/power/acpi/acpidump: version 20070714
  tools/power/acpi/acpidump: version 20060606
  tools/power/acpi/acpidump: version 20051111
  xo15-ebook: convert to module_acpi_driver()
  ...
2012-10-08 07:14:06 +09:00
Len Brown 3f44ea0d1c Merge branches 'acpica', 'acpidump', 'intel-idle', 'misc', 'module_acpi_driver-simplify', 'turbostat' and 'usb3' into release
add acpidump utility
intel_idle driver now supports IVB Xeon
turbostat can now count SMIs
ACPI can now bind to USB3 hubs
misc fixes
2012-10-06 16:00:32 -04:00
Lance Ortiz d1efe3c324 ACPI: Add new sysfs interface to export device description
Add support to export the device description obtained from the ACPI _STR
method, if one exists for a device, to user-space via a sysfs interface.
This new interface provides a standard and platform neutral way for users
to obtain the description text stored in the ACPI _STR method.  If no
_STR method exists for the device, no sysfs 'description' file will be
created.  The 'description' file will be located in the /sys/devices/
directory using the device's path.

/sys/device/<bus>/<bridge path>/<device path>.../firmware_node/description

Example:

/sys/devices/pci0000:00/0000:00.07.0/0000:0e:00.0/firmware_node/description

It can also be located using the ACPI device path, for example:

/sys/devices/LNXSYSTM:00/device:00/ACPI0004:00/PNP0A08:00/device:13/device:15/description
/sys/devices/LNXSYSTM:00/device:00/ACPI0004:00/ACPI0004:01/ACPI0007:02/description

Execute the 'cat' command on the 'description' file to obtain the
description string for that device.

This patch also includes documentation describing how the new sysfs
interface works

Changes from v1-v2 based on comments by Len Brown and Fengguang Wu
* Removed output "No Description" and leaving a NULL attribute if the
_STR method failed to evaluate.

* In acpi_device_remove_files() removed the redundent check of
dev->pnp.str_obj before calling free.  This check triggered a message
from smatch.

Signed-off-by: Lance Ortiz <lance.ortiz@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2012-10-06 15:52:16 -04:00
Fenghua Yu 369d913b24 ACPI: Harden acpi_table_parse_entries() against BIOS bug
Parsing acpi table entries may fall into an infinite loop on a buggy BIOS
which has entry length=0 in acpi table.

Instead of kernel hang with few failure clue which leads to heavy lifting debug
effort, this patch hardens kernel boot by booting into non NUMA mode. The debug
info left in log buffer helps people identify the issue.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2012-10-06 15:51:49 -04:00
Feng Tang 67bfa9b60b ACPI: EC: Add a quirk for CLEVO M720T/M730T laptop
By enlarging the GPE storm threshold back to 20, that laptop's
EC works fine with interrupt mode instead of polling mode.

https://bugzilla.kernel.org/show_bug.cgi?id=45151

Reported-and-Tested-by: Francesco <trentini@dei.unipd.it>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
cc: stable@vger.kernel.org
2012-10-06 14:57:33 -04:00
Feng Tang a520d52e99 ACPI: EC: Make the GPE storm threshold a module parameter
The Linux EC driver includes a mechanism to detect GPE storms,
and switch from interrupt-mode to polling mode.  However, polling
mode sometimes doesn't work, so the workaround is problematic.
Also, different systems seem to need the threshold for detecting
the GPE storm at different levels.

ACPI_EC_STORM_THRESHOLD was initially 20 when it's created, and
was changed to 8 in 2.6.28 commit 06cf7d3c7 "ACPI: EC: lower interrupt storm
threshold" to fix kernel bug 11892 by forcing the laptop in that bug to
work in polling mode. However in bug 45151, it works fine in interrupt
mode if we lift the threshold back to 20.

This patch makes the threshold a module parameter so that user has a
flexible option to debug/workaround this issue.

The default is unchanged.

This is also a preparation patch to fix specific systems:
	https://bugzilla.kernel.org/show_bug.cgi?id=45151

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
cc: stable@vger.kernel.org
2012-10-06 14:53:10 -04:00
Linus Torvalds 612a9aab56 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm merge (part 1) from Dave Airlie:
 "So first of all my tree and uapi stuff has a conflict mess, its my
  fault as the nouveau stuff didn't hit -next as were trying to rebase
  regressions out of it before we merged.

  Highlights:
   - SH mobile modesetting driver and associated helpers
   - some DRM core documentation
   - i915 modesetting rework, haswell hdmi, haswell and vlv fixes, write
     combined pte writing, ilk rc6 support,
   - nouveau: major driver rework into a hw core driver, makes features
     like SLI a lot saner to implement,
   - psb: add eDP/DP support for Cedarview
   - radeon: 2 layer page tables, async VM pte updates, better PLL
     selection for > 2 screens, better ACPI interactions

  The rest is general grab bag of fixes.

  So why part 1? well I have the exynos pull req which came in a bit
  late but was waiting for me to do something they shouldn't have and it
  looks fairly safe, and David Howells has some more header cleanups
  he'd like me to pull, that seem like a good idea, but I'd like to get
  this merge out of the way so -next dosen't get blocked."

Tons of conflicts mostly due to silly include line changes, but mostly
mindless.  A few other small semantic conflicts too, noted from Dave's
pre-merged branch.

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (447 commits)
  drm/nv98/crypt: fix fuc build with latest envyas
  drm/nouveau/devinit: fixup various issues with subdev ctor/init ordering
  drm/nv41/vm: fix and enable use of "real" pciegart
  drm/nv44/vm: fix and enable use of "real" pciegart
  drm/nv04/dmaobj: fixup vm target handling in preparation for nv4x pcie
  drm/nouveau: store supported dma mask in vmmgr
  drm/nvc0/ibus: initial implementation of subdev
  drm/nouveau/therm: add support for fan-control modes
  drm/nouveau/hwmon: rename pwm0* to pmw1* to follow hwmon's rules
  drm/nouveau/therm: calculate the pwm divisor on nv50+
  drm/nouveau/fan: rewrite the fan tachometer driver to get more precision, faster
  drm/nouveau/therm: move thermal-related functions to the therm subdev
  drm/nouveau/bios: parse the pwm divisor from the perf table
  drm/nouveau/therm: use the EXTDEV table to detect i2c monitoring devices
  drm/nouveau/therm: rework thermal table parsing
  drm/nouveau/gpio: expose the PWM/TOGGLE parameter found in the gpio vbios table
  drm/nouveau: fix pm initialization order
  drm/nouveau/bios: check that fixed tvdac gpio data is valid before using it
  drm/nouveau: log channel debug/error messages from client object rather than drm client
  drm/nouveau: have drm debugging macros build on top of core macros
  ...
2012-10-03 23:29:23 -07:00
Linus Torvalds 16642a2e7b Power management updates for 3.7-rc1
* Improved system suspend/resume and runtime PM handling for the SH TMU, CMT
   and MTU2 clock event devices (also used by ARM/shmobile).
 
 * Generic PM domains framework extensions related to cpuidle support and
   domain objects lookup using names.
 
 * ARM/shmobile power management updates including improved support for the
   SH7372's A4S power domain containing the CPU core.
 
 * cpufreq changes related to AMD CPUs support from Matthew Garrett, Andre
   Przywara and Borislav Petkov.
 
 * cpu0 cpufreq driver from Shawn Guo.
 
 * cpufreq governor fixes related to the relaxing of limit from Michal Pecio.
 
 * OMAP cpufreq updates from Axel Lin and Richard Zhao.
 
 * cpuidle ladder governor fixes related to the disabling of states from
   Carsten Emde and me.
 
 * Runtime PM core updates related to the interactions with the system suspend
   core from Alan Stern and Kevin Hilman.
 
 * Wakeup sources modification allowing more helper functions to be called from
   interrupt context from John Stultz and additional diagnostic code from Todd
   Poynor.
 
 * System suspend error code path fix from Feng Hong.
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Merge tag 'pm-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael J Wysocki:

 - Improved system suspend/resume and runtime PM handling for the SH
   TMU, CMT and MTU2 clock event devices (also used by ARM/shmobile).

 - Generic PM domains framework extensions related to cpuidle support
   and domain objects lookup using names.

 - ARM/shmobile power management updates including improved support for
   the SH7372's A4S power domain containing the CPU core.

 - cpufreq changes related to AMD CPUs support from Matthew Garrett,
   Andre Przywara and Borislav Petkov.

 - cpu0 cpufreq driver from Shawn Guo.

 - cpufreq governor fixes related to the relaxing of limit from Michal
   Pecio.

 - OMAP cpufreq updates from Axel Lin and Richard Zhao.

 - cpuidle ladder governor fixes related to the disabling of states from
   Carsten Emde and me.

 - Runtime PM core updates related to the interactions with the system
   suspend core from Alan Stern and Kevin Hilman.

 - Wakeup sources modification allowing more helper functions to be
   called from interrupt context from John Stultz and additional
   diagnostic code from Todd Poynor.

 - System suspend error code path fix from Feng Hong.

Fixed up conflicts in cpufreq/powernow-k8 that stemmed from the
workqueue fixes conflicting fairly badly with the removal of support for
hardware P-state chips.  The changes were independent but somewhat
intertwined.

* tag 'pm-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (76 commits)
  Revert "PM QoS: Use spinlock in the per-device PM QoS constraints code"
  PM / Runtime: let rpm_resume() succeed if RPM_ACTIVE, even when disabled, v2
  cpuidle: rename function name "__cpuidle_register_driver", v2
  cpufreq: OMAP: Check IS_ERR() instead of NULL for omap_device_get_by_hwmod_name
  cpuidle: remove some empty lines
  PM: Prevent runtime suspend during system resume
  PM QoS: Use spinlock in the per-device PM QoS constraints code
  PM / Sleep: use resume event when call dpm_resume_early
  cpuidle / ACPI : move cpuidle_device field out of the acpi_processor_power structure
  ACPI / processor: remove pointless variable initialization
  ACPI / processor: remove unused function parameter
  cpufreq: OMAP: remove loops_per_jiffy recalculate for smp
  sections: fix section conflicts in drivers/cpufreq
  cpufreq: conservative: update frequency when limits are relaxed
  cpufreq / ondemand: update frequency when limits are relaxed
  properly __init-annotate pm_sysrq_init()
  cpufreq: Add a generic cpufreq-cpu0 driver
  PM / OPP: Initialize OPP table from device tree
  ARM: add cpufreq transiton notifier to adjust loops_per_jiffy for smp
  cpufreq: Remove support for hardware P-state chips from powernow-k8
  ...
2012-10-02 18:32:35 -07:00
Dave Airlie 8ff1f792dd Merge branch 'drm-next-3.7' of git://people.freedesktop.org/~agd5f/linux into drm-next
Alex writes:
"The big changes for 3.7 include:
- Asynchronous VM page table updates for Cayman/SI
- 2 level VM page table support.  Saves memory compared to 1 level
  page tables.
- Reworked PLL handing in the display code allows lots more
  combinations of monitors to work, including more than two
  DP displays assuming compatible clocks across shared PLLs.
  This also allows us to power down extra PLLs when we can
  share a single one across multiple displays which saves power.
- Native backlight control on ATOMBIOS systems.
- Improved ACPI support for interacting with the GPU.  Fixes
  backlight control on some laptops.
- Document AMD ACPI interfaces
- Lots of code cleanup
- Bug fixes"

* 'drm-next-3.7' of git://people.freedesktop.org/~agd5f/linux: (79 commits)
  drm/radeon: add vm set_page() callback for SI
  drm/radeon: rework the vm_flush interface
  drm/radeon: use WRITE_DATA packets for vm flush on SI
  drm/radeon/pm: fix multi-head profile handling on BTC+ (v2)
  drm/radeon: fix radeon power state debug output
  drm/radeon: force MSIs on RS690 asics
  drm/radeon: Add MSI quirk for gateway RS690
  drm/radeon: allow MIP_ADDRESS=0 for MSAA textures on Evergreen
  drm/radeon/kms: allow STRMOUT_BASE_UPDATE on RS780 and RS880
  drm/radeon: add 2-level VM pagetables support v9
  drm/radeon: refactor set_page chipset interface v5
  drm/radeon: Fix scratch register leak in IB test.
  drm/radeon: restore backlight level on resume
  drm/radeon: add get_backlight_level callback
  drm/radeon: only adjust default clocks on NI GPUs
  drm/radeon: validate PPLL in crtc fixup
  drm/radeon: work around KMS modeset limitations in PLL allocation (v2)
  drm/radeon: make non-DP PPLL sharing more robust
  drm/radeon: store the encoder in the radeon_crtc
  drm/radeon: rework crtc pll setup to better support PPLL sharing
  ...
2012-10-03 10:32:58 +10:00
Linus Torvalds fdb2f9c2eb PCI changes for the 3.7 merge window:
Host bridge hotplug
     - Protect acpi_pci_drivers and acpi_pci_roots (Taku Izumi)
     - Clear host bridge resource info to avoid issue when releasing (Yinghai Lu)
     - Notify acpi_pci_drivers when hot-plugging host bridges (Jiang Liu)
     - Use standard list ops for acpi_pci_drivers (Jiang Liu)
 
   Device hotplug
     - Use pci_get_domain_bus_and_slot() to close hotplug races (Jiang Liu)
     - Remove fakephp driver (Bjorn Helgaas)
     - Fix VGA ref count in hotplug remove path (Yinghai Lu)
     - Allow acpiphp to handle PCIe ports without native hotplug (Jiang Liu)
     - Implement resume regardless of pciehp_force param (Oliver Neukum)
     - Make pci_fixup_irqs() work after init (Thierry Reding)
 
   Miscellaneous
     - Add pci_pcie_type(dev) and remove pci_dev.pcie_type (Yijing Wang)
     - Factor out PCI Express Capability accessors (Jiang Liu)
     - Add pcibios_window_alignment() so powerpc EEH can use generic resource assignment (Gavin Shan)
     - Make pci_error_handlers const (Stephen Hemminger)
     - Cleanup drivers/pci/remove.c (Bjorn Helgaas)
     - Improve Vendor-Specific Extended Capability support (Bjorn Helgaas)
     - Use standard list ops for bus->devices (Bjorn Helgaas)
     - Avoid kmalloc in pci_get_subsys() and pci_get_class() (Feng Tang)
     - Reassign invalid bus number ranges (Intel DP43BF workaround) (Yinghai Lu)
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Merge tag 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI changes from Bjorn Helgaas:
 "Host bridge hotplug
    - Protect acpi_pci_drivers and acpi_pci_roots (Taku Izumi)
    - Clear host bridge resource info to avoid issue when releasing
      (Yinghai Lu)
    - Notify acpi_pci_drivers when hot-plugging host bridges (Jiang Liu)
    - Use standard list ops for acpi_pci_drivers (Jiang Liu)

  Device hotplug
    - Use pci_get_domain_bus_and_slot() to close hotplug races (Jiang
      Liu)
    - Remove fakephp driver (Bjorn Helgaas)
    - Fix VGA ref count in hotplug remove path (Yinghai Lu)
    - Allow acpiphp to handle PCIe ports without native hotplug (Jiang
      Liu)
    - Implement resume regardless of pciehp_force param (Oliver Neukum)
    - Make pci_fixup_irqs() work after init (Thierry Reding)

  Miscellaneous
    - Add pci_pcie_type(dev) and remove pci_dev.pcie_type (Yijing Wang)
    - Factor out PCI Express Capability accessors (Jiang Liu)
    - Add pcibios_window_alignment() so powerpc EEH can use generic
      resource assignment (Gavin Shan)
    - Make pci_error_handlers const (Stephen Hemminger)
    - Cleanup drivers/pci/remove.c (Bjorn Helgaas)
    - Improve Vendor-Specific Extended Capability support (Bjorn
      Helgaas)
    - Use standard list ops for bus->devices (Bjorn Helgaas)
    - Avoid kmalloc in pci_get_subsys() and pci_get_class() (Feng Tang)
    - Reassign invalid bus number ranges (Intel DP43BF workaround)
      (Yinghai Lu)"

* tag 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (102 commits)
  PCI: acpiphp: Handle PCIe ports without native hotplug capability
  PCI/ACPI: Use acpi_driver_data() rather than searching acpi_pci_roots
  PCI/ACPI: Protect acpi_pci_roots list with mutex
  PCI/ACPI: Use acpi_pci_root info rather than looking it up again
  PCI/ACPI: Pass acpi_pci_root to acpi_pci_drivers' add/remove interface
  PCI/ACPI: Protect acpi_pci_drivers list with mutex
  PCI/ACPI: Notify acpi_pci_drivers when hot-plugging PCI root bridges
  PCI/ACPI: Use normal list for struct acpi_pci_driver
  PCI/ACPI: Use DEVICE_ACPI_HANDLE rather than searching acpi_pci_roots
  PCI: Fix default vga ref_count
  ia64/PCI: Clear host bridge aperture struct resource
  x86/PCI: Clear host bridge aperture struct resource
  PCI: Stop all children first, before removing all children
  Revert "PCI: Use hotplug-safe pci_get_domain_bus_and_slot()"
  PCI: Provide a default pcibios_update_irq()
  PCI: Discard __init annotations for pci_fixup_irqs() and related functions
  PCI: Use correct type when freeing bus resource list
  PCI: Check P2P bridge for invalid secondary/subordinate range
  PCI: Convert "new_id"/"remove_id" into generic pci_bus driver attributes
  xen-pcifront: Use hotplug-safe pci_get_domain_bus_and_slot()
  ...
2012-10-01 12:05:36 -07:00
Thomas Renninger 325a8d3603 ACPI: Create acpi_table_taint() function to avoid code duplication
There are two ways of overriding ACPI tables now, both need to taint the
the kernel.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Link: http://lkml.kernel.org/r/1349043837-22659-6-git-send-email-trenn@suse.de
Cc: Len Brown <lenb@kernel.org>
Cc: Robert Moore <robert.moore@intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2012-09-30 18:03:35 -07:00
Thomas Renninger b2a35003df ACPI: Implement physical address table override
Previous patches stored ACPI tables provided via initrd in a memblock reserved
area.
If a table is loaded and the table type of an initrd provided one matches,
the one from initrd is prefered.
In case of a SSDT table, the OEM table id also has to match.

ACPI tables can be loaded at boot time (static table pointers in XSDT),
but also dynamically any time later via ASL commands load() or loadTable().
The override mechanism always works.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Link: http://lkml.kernel.org/r/1349043837-22659-5-git-send-email-trenn@suse.de
Cc: Len Brown <lenb@kernel.org>
Cc: Robert Moore <robert.moore@intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2012-09-30 18:03:29 -07:00
Thomas Renninger 53aac44c90 ACPI: Store valid ACPI tables passed via early initrd in reserved memblock areas
A later patch will compare them with ACPI tables that get loaded at boot or
runtime and if criteria match, a stored one is loaded.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Link: http://lkml.kernel.org/r/1349043837-22659-4-git-send-email-trenn@suse.de
Cc: Len Brown <lenb@kernel.org>
Cc: Robert Moore <robert.moore@intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2012-09-30 18:03:23 -07:00