Commit 88af9b16 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'acpi-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm 

Pull ACPI updates from Rafael Wysocki:
 "These fix a frequency limit issue in the ACPI processor performance
  library code, fix a few issues in the ACPICA code, improve Crystal
  Cove support in the ACPI PMIC driver, fix string handling in the ACPI
  battery driver, add IRQ override quirks for a few machines more, fix
  other assorted problems and clean up code and documentation.

  Specifics:

   - Drop port I/O validation for some regions to avoid AML failures due
     to rejections of legitimate port I/O writes (Mario Limonciello)

   - Constify acpi_get_handle() pathname argument to allow its callers
     to pass const pathnames to it (Sakari Ailus)

   - Prevent acpi_ns_simple_repair() from crashing in some cases when
     AE_AML_NO_RETURN_VALUE should be returned (Daniil Tatianin)

   - Fix typo in CDAT DSMAS struct definition (Lukas Wunner)

   - Drop an unnecessary (void *) conversion from the ACPI processor
     driver (Zhou jie)

   - Modify the ACPI processor performance library code to use the "no
     limit" frequency QoS as appropriate and adjust the intel_pstate
     driver accordingly (Rafael Wysocki)

   - Add support for NBFT to the ACPI table parser (Stuart Hayes)

   - Introduce list of known non-PNP devices to avoid enumerating some
     of them as PNP devices (Rafael Wysocki)

   - Add x86 ACPI paths to the ACPI entry in MAINTAINERS to allow
     scripts to report the actual maintainers information (Rafael
     Wysocki)

   - Add two more entries to the ACPI IRQ override quirk list (Adam
     Niederer, Werner Sembach)

   - Add a pmic_i2c_address entry for Intel Bay Trail Crystal Cove to
     allow intel_soc_pmic_exec_mipi_pmic_seq_element() to be used with
     the Bay Trail Crystal Cove PMIC OpRegion driver (Hans de Goede)

   - Add comments with DSDT power OpRegion field names to the ACPI PMIC
     driver (Hans de Goede)

   - Fix string termination handling in the ACPI battery driver (Armin
     Wolf)

   - Limit error type to 32-bit width in the ACPI APEI error injection
     code (Shuai Xue)

   - Fix Lenovo Ideapad Z570 DMI match in the ACPI backlight driver
     (Hans de Goede)

   - Silence missing prototype warnings in some places in the
     ACPI-related code (Ammar Faizi)

   - Make kobj_type structures used in the ACPI code constant (Thomas
     Weißschuh)

   - Correct spelling in firmware-guide/ACPI (Randy Dunlap)

   - Clarify the meaning of Explicit and Implicit in the _DSD GPIO
     properties documentation (Andy Shevchenko)

   - Fix some kernel-doc comments in the ACPI CPPC library code (Yang
     Li)"

* tag 'acpi-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (25 commits)
  ACPI: make kobj_type structures constant
  Documentation: firmware-guide: gpio-properties: Clarify Explicit and Implicit
  ACPICA: Fix typo in CDAT DSMAS struct definition
  ACPI: resource: Do IRQ override on all TongFang GMxRGxx
  ACPI: resource: Add IRQ overrides for MAINGEAR Vector Pro 2 models
  ACPI: CPPC: Fix some kernel-doc comments
  ACPI: video: Fix Lenovo Ideapad Z570 DMI match
  Documentation: firmware-guide/ACPI: correct spelling
  ACPI: PMIC: Add comments with DSDT power opregion field names
  ACPI: battery: Increase maximum string length
  ACPI: battery: Fix buffer overread if not NUL-terminated
  ACPI: APEI: EINJ: Limit error type to 32-bit width
  MAINTAINERS: Add x86 ACPI paths to the ACPI entry
  ACPI: battery: Fix missing NUL-termination with large strings
  ACPI: PNP: Introduce list of known non-PNP devices
  ACPICA: nsrepair: handle cases without a return value correctly
  ACPI: Silence missing prototype warnings
  cpufreq: intel_pstate: Drop ACPI _PSS states table patching
  ACPI: processor: perflib: Avoid updating frequency QoS unnecessarily
  ACPI: processor: perflib: Use the "no limit" frequency QoS
  ...
parents 2504ba8b f32309c4

Documentation/firmware-guide/acpi/acpi-lid.rst

+1 −1
Original line number Diff line number Diff line
@@ -34,7 +34,7 @@ state upon the last _LID evaluation. There won't be difference when the 
_LID control method is evaluated during the runtime, the problem is its

initial returning value. When the AML tables implement this control method

with cached value, the initial returning value is likely not reliable.

There are platforms always retun "closed" as initial lid state.

There are platforms always return "closed" as initial lid state.



Restrictions of the lid state change notifications

==================================================

Documentation/firmware-guide/acpi/gpio-properties.rst

+24 −11
Original line number Diff line number Diff line
@@ -67,17 +67,30 @@ state of the output pin which driver should use during its initialization. 
Linux tries to use common sense here and derives the state from the bias

and polarity settings. The table below shows the expectations:



=========  =============  ==============

Pull Bias     Polarity     Requested...

=========  =============  ==============

Implicit     x            AS IS (assumed firmware configured for us)

Explicit     x (no _DSD)  as Pull Bias (Up == High, Down == Low),

                          assuming non-active (Polarity = !Pull Bias)

Down         Low          as low, assuming active

Down         High         as low, assuming non-active

Up           Low          as high, assuming non-active

Up           High         as high, assuming active

=========  =============  ==============

+-------------+-------------+-----------------------------------------------+

| Pull Bias   | Polarity    | Requested...                                  |

+=============+=============+===============================================+

| Implicit                                                                  |

+-------------+-------------+-----------------------------------------------+

| **Default** | x           | AS IS (assumed firmware configured it for us) |

+-------------+-------------+-----------------------------------------------+

| Explicit                                                                  |

+-------------+-------------+-----------------------------------------------+

| **None**    | x           | AS IS (assumed firmware configured it for us) |

|             |             | with no Pull Bias                             |

+-------------+-------------+-----------------------------------------------+

| **Up**      | x (no _DSD) |                                               |

|             +-------------+ as high, assuming non-active                  |

|             | Low         |                                               |

|             +-------------+-----------------------------------------------+

|             | High        | as high, assuming active                      |

+-------------+-------------+-----------------------------------------------+

| **Down**    | x (no _DSD) |                                               |

|             +-------------+ as low, assuming non-active                   |

|             | High        |                                               |

|             +-------------+-----------------------------------------------+

|             | Low         | as low, assuming active                       |

+-------------+-------------+-----------------------------------------------+



That said, for our above example the both GPIOs, since the bias setting

is explicit and _DSD is present, will be treated as active with a high

Documentation/firmware-guide/acpi/namespace.rst

+1 −1
Original line number Diff line number Diff line
@@ -31,7 +31,7 @@ Description Table). The XSDT always points to the FADT (Fixed ACPI 
Description Table) using its first entry, the data within the FADT

includes various fixed-length entries that describe fixed ACPI features

of the hardware.  The FADT contains a pointer to the DSDT

(Differentiated System Descripition Table).  The XSDT also contains

(Differentiated System Description Table).  The XSDT also contains

entries pointing to possibly multiple SSDTs (Secondary System

Description Table).

MAINTAINERS

+4 −1
Original line number Diff line number Diff line
@@ -361,6 +361,8 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm 
F:	Documentation/ABI/testing/configfs-acpi

F:	Documentation/ABI/testing/sysfs-bus-acpi

F:	Documentation/firmware-guide/acpi/

F:	arch/x86/kernel/acpi/

F:	arch/x86/pci/acpi.c

F:	drivers/acpi/

F:	drivers/pci/*/*acpi*

F:	drivers/pci/*acpi*
@@ -19918,7 +19920,8 @@ L: linux-pm@vger.kernel.org 
S:	Supported

B:	https://bugzilla.kernel.org

F:	Documentation/power/

F:	arch/x86/kernel/acpi/

F:	arch/x86/kernel/acpi/sleep*

F:	arch/x86/kernel/acpi/wakeup*

F:	drivers/base/power/

F:	include/linux/freezer.h

F:	include/linux/pm.h

drivers/acpi/acpi_lpit.c

+1 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
#include <linux/acpi.h>

#include <asm/msr.h>

#include <asm/tsc.h>

#include "internal.h"



struct lpit_residency_info {

	struct acpi_generic_address gaddr;