Tags

Additional power management and ACPI updates for v3.20-rc1

 - Revert a recent ACPI LPSS driver commit that prevented the touchpad
   driver from loading on Dell XPS13 (Jarkko Nikula).

 - Make the ACPI LPSS driver disable the I2C controllers and deassert
   SPI host controllers resets at startup on Intel BayTrail and Braswell
   SoCs in case they have been left in wrong states by the platform
   firmware which then may casuse fatal controller driver failures during
   resume from hibernation (Mika Westerberg).

 - Make two recently added ACPI EC messages look better (Scot Doyle).

 - Reduce the printk level of a recently added debug message related to
   ACPI resources that may become noisy in some cases (Rafael J Wysocki).

 - Add a new ACPI backlight blacklist entry for Samsung Series 9
   (900X3C/900X3D/900X3E/900X4C/900X4D) laptops where the native backlight
   interface doesn't work while the ACPI based one does (Jens Reyer).

 - Make the PNP sybsystem's core code use __request_region() followed by
   __release_region() instead of __check_region() which then will allow
   us to get rid of the latter as it has no more users (Jakub Sitnicki).

 - Fix a build breakage and an issue with two __init functions that may be
   called after initialization in the s3c cpufreq driver (Arnd Bergmann).

 - Make the powernv cpuidle driver read target_residency values for idle
   states from a Device Tree (as we have the suitable DT bindings for that
   now) and improve the parsing of the powermgmt DT node in that driver
   (Preeti U Murthy).

/

The clock framework changes for 3.20 contain the usual driver additions,
enhancements and fixes mostly for ARM32, ARM64, MIPS and Power-based
devices. Additionaly the framework core underwent a bit of surgery with
two major changes. The boundary between the clock core and clock
providers (e.g clock drivers) is now more well defined with dedicated
provider helper functions. struct clk no longer maps 1:1 with the
hardware clock but is a true per-user cookie which helps us tracker
users of hardware clocks and debug bad behavior. The second major change
is the addition of rate constraints for clocks. Rate ranges are now
supported which are analogous to the voltage ranges in the regulator
framework. Unfortunately these changes to the core created some
breakeage. We think we fixed it all up but for this reason there are
lots of last minute commits trying to undo the damage.

This is the 3.2.67 stable release

sound fixes for 3.20-rc1

Here are a few small fix patches for 3.20-rc1:
- Quirks for Denon and Lifecam USB-audio devices and HD-audio
  on HP laptops
- A long-time regression fix for HDSP eMADI
- Add missing DRAIN_TRIGGER flag set for ASoC intel-sst
- Trivial fixes for sequencer core and HD-audio Tegra, a LINE6
  cleanup

This is the 3.12.38 stable release

qcomlt-v3.19

Suspend-to-idle timer quiescing support for v3.20-rc1

Till now suspend-to-idle has not been able to save much more energy
than runtime PM because of timer interrupts that periodically bring
CPUs out of idle while they are waiting for a wakeup interrupt.  Of
course, the timer interrupts are not wakeup ones, so the handling of
them can be deferred until a real wakeup interrupt happens, but at
the same time we don't want to mass-expire timers at that point.

The solution is to suspend the entire timekeeping when the last CPU
is entering an idle state and resume it when the first CPU goes out
of idle.  That has to be done with care, though, so as to avoid
accessing suspended clocksources etc. end we need extra support
from idle drivers for that.

This series of commits adds support for quiescing timers during
suspend-to-idle and adds the requisite callbacks to intel_idle
and the ACPI cpuidle driver.

/

Staging drivers patches for 3.20-rc1

Here's the big staging driver tree update for 3.20-rc1.  Lots of little
things in here, adding up to lots of overall cleanups.  The IIO driver
updates are also in here as they cross the staging tree boundry a lot.
I2O has moved into staging as well, as a plan to drop it from the tree
eventually as that's a dead subsystem.

All of this has been in linux-next with no reported issues for a while.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

- use the atomic helpers for plane_upate/disable hooks (Matt Roper)
- refactor the initial plane config code (Damien)
- ppgtt prep patches for dynamic pagetable alloc (Ben Widawsky, reworked and
  rebased by a lot of other people)
- framebuffer modifier support from Tvrtko Ursulin, drm core code from Rob Clark
- piles of workaround patches for skl from Damien and Nick Hoath
- vGPU support for xengt on the client side (Yu Zhang)
- and the usual smaller things all over

More ACPI and power management updates for v3.20-rc1

 - Revert two ACPI EC driver commits, one that broke system suspend
   on Acer Aspire S5 and one that depends on it (Rafael J Wysocki).

 - Fix a typo leading to an incorrect check in the exynos-ppmu devfreq
   driver (Dan Carpenter).

 - Add support for one more Broadwell CPU model to intel_idle (Len Brown).

 - Fix an obscure problem with state transitions related to interrupts
   in the speedstep-smi cpufreq driver (Mikulas Patocka).

 - Remove some unnecessary messages related to the "out of memory"
   condition from the core PM code (Quentin Lambert).

 - Update turbostat parameters and documentation, add support for
   one more Broadwell CPU model to it and modify it to skip
   printing disabled package C-states (Len Brown).

/

IOMMU Updates for Linux v3.20

This time with:

	* Generic page-table framework for ARM IOMMUs using the LPAE page-table
	  format, ARM-SMMU and Renesas IPMMU make use of it already.

	* Break out of the IO virtual address allocator from the Intel IOMMU so
	  that it can be used by other DMA-API implementations too. The first
	  user will be the ARM64 common DMA-API implementation for IOMMUs

	* Device tree support for Renesas IPMMU

	* Various fixes and cleanups all over the place

DeviceTree changes for 3.20:

- DT unittests for I2C probing and overlays from Pantelis Antoniou
- Remove DT unittest dependency on OF_DYNAMIC from Gaurav Minocha
- Add Tegra compatible strings missing for newer parts from Paul
Walmsley
- Various vendor prefix additions

Fairly small update, but there are some interesting new features.

Common: Optional support for adding a small amount of polling on each HLT
instruction executed in the guest (or equivalent for other architectures).
This can improve latency up to 50% on some scenarios (e.g. O_DSYNC writes
or TCP_RR netperf tests).  This also has to be enabled manually for now,
but the plan is to auto-tune this in the future.

ARM/ARM64: the highlights are support for GICv3 emulation and dirty page
tracking

s390: several optimizations and bugfixes.  Also a first: a feature
exposed by KVM (UUID and long guest name in /proc/sysinfo) before
it is available in IBM's hypervisor! :)

MIPS: Bugfixes.

x86: Support for PML (page modification logging, a new feature in
Broadwell Xeons that speeds up dirty page tracking), nested virtualization
improvements (nested APICv---a nice optimization), usual round of emulation
fixes.  There is also a new option to reduce latency of the TSC deadline
timer in the guest; this needs to be tuned manually.

Some commits are common between this pull and Catalin's; I see you
have already included his tree.

ARM has other conflicts where functions are added in the same place
by 3.19-rc and 3.20 patches.  These are not large though, and entirely
within KVM.

rtlwifi:

* remove superfluous warning message which is not needed anymore

sound updates for 3.20-rc1

In this batch, you can find lots of cleanups through the whole
subsystem, as our good New Year's resolution.  Lots of LOCs and
commits are about LINE6 driver that was promoted finally from staging
tree, and as usual, there've been widely spread ASoC changes.

Here some highlights:

ALSA core changes
  - Embedding struct device into ALSA core structures
  - sequencer core cleanups / fixes
  - PCM msbits constraints cleanups / fixes
  - New SNDRV_PCM_TRIGGER_DRAIN command
  - PCM kerneldoc fixes, header cleanups
  - PCM code cleanups using more standard codes
  - Control notification ID fixes

Driver cleanups
  - Cleanups of PCI PM callbacks
  - Timer helper usages cleanups
  - Simplification (e.g. argument reduction) of many driver codes

HD-audio
  - Hotkey and LED support on HP laptops with Realtek codecs
  - Dock station support on HP laptops
  - Toshiba Satellite S50D fixup
  - Enhanced wallclock timestamp handling for HD-audio
  - Componentization to simplify the linkage between i915 and hd-audio
    drivers for Intel HDMI/DP

USB-audio
  - Akai MPC Element support
  - Enhanced timestamp handling

ASoC
  - Lots of refactoringin ASoC core, moving drivers to more data
    driven initialization and rationalizing a lot of DAPM usage
  - Much improved handling of CDCLK clocks on Samsung I2S controllers
  - Lots of driver specific cleanups and feature improvements
  - CODEC support for TI PCM514x and TLV320AIC3104 devices
  - Board support for Tegra systems with Realtek RT5677
  - New driver for Maxim max98357a
  - More enhancements / fixes for Intel SST driver

Others
  - Promotion of LINE6 driver from staging along with lots of rewrites
    and cleanups
  - DT support for old non-ASoC atmel driver
  - oxygen cleanups, XIO2001 init, Studio Evolution SE6x support
  - Emu8000 DRAM size detection fix on ISA(!!) AWE64 boards
  - A few more ak411x fixes for ice1724 boards

This is the 3.18.7 stable release

This is the 3.14.33 stable release

This is the 3.10.69 stable release

ACPI and power management updates for v3.20-rc1

 - Rework of the core ACPI resources parsing code to fix issues
   in it and make using resource offsets more convenient and
   consolidation of some resource-handing code in a couple of places
   that have grown analagous data structures and code to cover the
   the same gap in the core (Jiang Liu, Thomas Gleixner, Lv Zheng).

 - ACPI-based IOAPIC hotplug support on top of the resources handling
   rework (Jiang Liu, Yinghai Lu).

 - ACPICA update to upstream release 20150204 including an interrupt
   handling rework that allows drivers to install raw handlers for
   ACPI GPEs which then become entirely responsible for the given GPE
   and the ACPICA core code won't touch it (Lv Zheng, David E Box,
   Octavian Purdila).

 - ACPI EC driver rework to fix several concurrency issues and other
   problems related to events handling on top of the ACPICA's new
   support for raw GPE handlers (Lv Zheng).

 - New ACPI driver for AMD SoCs analogous to the LPSS (Low-Power
   Subsystem) driver for Intel chips (Ken Xue).

 - Two minor fixes of the ACPI LPSS driver (Heikki Krogerus,
   Jarkko Nikula).

 - Two new blacklist entries for machines (Samsung 730U3E/740U3E and
   510R) where the native backlight interface doesn't work correctly
   while the ACPI one does (Hans de Goede).

 - Rework of the ACPI processor driver's handling of idle states
   to make the code more straightforward and less bloated overall
   (Rafael J Wysocki).

 - Assorted minor fixes related to ACPI and SFI (Andreas Ruprecht,
   Andy Shevchenko, Hanjun Guo, Jan Beulich, Rafael J Wysocki,
   Yaowei Bai).

 - PCI core power management modification to avoid resuming (some)
   runtime-suspended devices during system suspend if they are in
   the right states already (Rafael J Wysocki).

 - New SFI-based cpufreq driver for Intel platforms using SFI
   (Srinidhi Kasagar).

 - cpufreq core fixes, cleanups and simplifications (Viresh Kumar,
   Doug Anderson, Wolfram Sang).

 - SkyLake CPU support and other updates for the intel_pstate driver
   (Kristen Carlson Accardi, Srinivas Pandruvada).

 - cpufreq-dt driver cleanup (Markus Elfring).

 - Init fix for the ARM big.LITTLE cpuidle driver (Sudeep Holla).

 - Generic power domains core code fixes and cleanups (Ulf Hansson).

 - Operating Performance Points (OPP) core code cleanups and kernel
   documentation update (Nishanth Menon).

 - New dabugfs interface to make the list of PM QoS constraints
   available to user space (Nishanth Menon).

 - New devfreq driver for Tegra Activity Monitor (Tomeu Vizoso).

 - New devfreq class (devfreq_event) to provide raw utilization data
   to devfreq governors (Chanwoo Choi).

 - Assorted minor fixes and cleanups related to power management
   (Andreas Ruprecht, Krzysztof Kozlowski, Rickard Strandqvist,
   Pavel Machek, Todd E Brandt, Wonhong Kwon).

 - turbostat updates (Len Brown) and cpupower Makefile improvement
   (Sriram Raghunathan).

/