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    Merge tag 'pm+acpi-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · b5283926
    Linus Torvalds authored
    Pull ACPI and power management updates from Rafael Wysocki:
     "Features-wise, to me the most important this time is a rework of
      wakeup interrupts handling in the core that makes them work
      consistently across all of the available sleep states, including
      suspend-to-idle.  Many thanks to Thomas Gleixner for his help with
      this work.
    
      Second is an update of the generic PM domains code that has been in
      need of some care for quite a while.  Unused code is being removed, DT
      support is being added and domains are now going to be attached to
      devices in bus type code in analogy with the ACPI PM domain.  The
      majority of work here was done by Ulf Hansson who also has been the
      most active developer this time.
    
      Apart from this we have a traditional ACPICA update, this time to
      upstream version 20140828 and a few ACPI wakeup interrupts handling
      patches on top of the general rework mentioned above.  There also are
      several cpufreq commits including renaming the cpufreq-cpu0 driver to
      cpufreq-dt, as this is what implements generic DT-based cpufreq
      support, and a new DT-based idle states infrastructure for cpuidle.
    
      In addition to that, the ACPI LPSS driver is updated, ACPI support for
      Apple machines is improved, a few bugs are fixed and a few cleanups
      are made all over.
    
      Finally, the Adaptive Voltage Scaling (AVS) subsystem now has a tree
      maintained by Kevin Hilman that will be merged through the PM tree.
    
      Numbers-wise, the generic PM domains update takes the lead this time
      with 32 non-merge commits, second is cpufreq (15 commits) and the 3rd
      place goes to the wakeup interrupts handling rework (13 commits).
    
      Specifics:
    
       - Rework the handling of wakeup IRQs by the IRQ core such that all of
         them will be switched over to "wakeup" mode in suspend_device_irqs()
         and in that mode the first interrupt will abort system suspend in
         progress or wake up the system if already in suspend-to-idle (or
         equivalent) without executing any interrupt handlers.  Among other
         things that eliminates the wakeup-related motivation to use the
         IRQF_NO_SUSPEND interrupt flag with interrupts which don't really
         need it and should not use it (Thomas Gleixner and Rafael Wysocki)
    
       - Switch over ACPI to handling wakeup interrupts with the help of the
         new mechanism introduced by the above IRQ core rework (Rafael Wysocki)
    
       - Rework the core generic PM domains code to eliminate code that's
         not used, add DT support and add a generic mechanism by which
         devices can be added to PM domains automatically during enumeration
         (Ulf Hansson, Geert Uytterhoeven and Tomasz Figa).
    
       - Add debugfs-based mechanics for debugging generic PM domains
         (Maciej Matraszek).
    
       - ACPICA update to upstream version 20140828.  Included are updates
         related to the SRAT and GTDT tables and the _PSx methods are in the
         METHOD_NAME list now (Bob Moore and Hanjun Guo).
    
       - Add _OSI("Darwin") support to the ACPI core (unfortunately, that
         can't really be done in a straightforward way) to prevent
         Thunderbolt from being turned off on Apple systems after boot (or
         after resume from system suspend) and rework the ACPI Smart Battery
         Subsystem (SBS) driver to work correctly with Apple platforms
         (Matthew Garrett and Andreas Noever).
    
       - ACPI LPSS (Low-Power Subsystem) driver update cleaning up the code,
         adding support for 133MHz I2C source clock on Intel Baytrail to it
         and making it avoid using UART RTS override with Auto Flow Control
         (Heikki Krogerus).
    
       - ACPI backlight updates removing the video_set_use_native_backlight
         quirk which is not necessary any more, making the code check the
         list of output devices returned by the _DOD method to avoid
         creating acpi_video interfaces that won't work and adding a quirk
         for Lenovo Ideapad Z570 (Hans de Goede, Aaron Lu and Stepan Bujnak)
    
       - New Win8 ACPI OSI quirks for some Dell laptops (Edward Lin)
    
       - Assorted ACPI code cleanups (Fabian Frederick, Rasmus Villemoes,
         Sudip Mukherjee, Yijing Wang, and Zhang Rui)
    
       - cpufreq core updates and cleanups (Viresh Kumar, Preeti U Murthy,
         Rasmus Villemoes)
    
       - cpufreq driver updates: cpufreq-cpu0/cpufreq-dt (driver name change
         among other things), ppc-corenet, powernv (Viresh Kumar, Preeti U
         Murthy, Shilpasri G Bhat, Lucas Stach)
    
       - cpuidle support for DT-based idle states infrastructure, new ARM64
         cpuidle driver, cpuidle core cleanups (Lorenzo Pieralisi, Rasmus
         Villemoes)
    
       - ARM big.LITTLE cpuidle driver updates: support for DT-based
         initialization and Exynos5800 compatible string (Lorenzo Pieralisi,
         Kevin Hilman)
    
       - Rework of the test_suspend kernel command line argument and a new
         trace event for console resume (Srinivas Pandruvada, Todd E Brandt)
    
       - Second attempt to optimize swsusp_free() (hibernation core) to make
         it avoid going through all PFNs which may be way too slow on some
         systems (Joerg Roedel)
    
       - devfreq updates (Paul Bolle, Punit Agrawal, Ãrjan Eide).
    
       - rockchip-io Adaptive Voltage Scaling (AVS) driver and AVS entry
         update in MAINTAINERS (Heiko Stübner, Kevin Hilman)
    
       - PM core fix related to clock management (Geert Uytterhoeven)
    
       - PM core's sysfs code cleanup (Johannes Berg)"
    
    * tag 'pm+acpi-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (105 commits)
      ACPI / fan: printk replacement
      PM / clk: Fix crash in clocks management code if !CONFIG_PM_RUNTIME
      PM / Domains: Rename cpu_data to cpuidle_data
      cpufreq: cpufreq-dt: fix potential double put of cpu OF node
      cpufreq: cpu0: rename driver and internals to 'cpufreq_dt'
      PM / hibernate: Iterate over set bits instead of PFNs in swsusp_free()
      cpufreq: ppc-corenet: remove duplicate update of cpu_data
      ACPI / sleep: Rework the handling of ACPI GPE wakeup from suspend-to-idle
      PM / sleep: Rename platform suspend/resume functions in suspend.c
      PM / sleep: Export dpm_suspend_late/noirq() and dpm_resume_early/noirq()
      ACPICA: Introduce acpi_enable_all_wakeup_gpes()
      ACPICA: Clear all non-wakeup GPEs in acpi_hw_enable_wakeup_gpe_block()
      ACPI / video: check _DOD list when creating backlight devices
      PM / Domains: Move dev_pm_domain_attach|detach() to pm_domain.h
      cpufreq: Replace strnicmp with strncasecmp
      cpufreq: powernv: Set the cpus to nominal frequency during reboot/kexec
      cpufreq: powernv: Set the pstate of the last hotplugged out cpu in policy->cpus to minimum
      cpufreq: Allow stop CPU callback to be used by all cpufreq drivers
      PM / devfreq: exynos: Enable building exynos PPMU as module
      PM / devfreq: Export helper functions for drivers
      ...
    b5283926