Fix error in Kconfig that exposed INTEL_PMT_CLASS as a user selectable
option. It is already selected by INTEL_PMT_TELEMETRY and
INTEL_PMT_CRASHLOG which are user selectable.

Fixes: e2729113 ("platform/x86: Intel PMT class driver")
Signed-off-by: NDavid E. Box <david.e.box@linux.intel.com>
Link: https://lore.kernel.org/r/20210126205508.30907-1-david.e.box@linux.intel.comSigned-off-by: NHans de Goede <hdegoede@redhat.com>

Add support to ideapad-laptop for Lenovo platforms that have DYTC
version 5 support or newer to use the platform profile feature.

Mostly based on Mark Pearson <markpearson@lenovo.com>'s thinkpad-acpi
work but massaged to fit ideapad driver.

Note that different from ThinkPads, IdeaPads's Thermal Hotkey won't
trigger profile switch itself, we'll leave it for userspace programs.

Tested on Lenovo Yoga-14S ARE Chinese Edition.
Signed-off-by: NJiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210105131447.38036-3-jiaxun.yang@flygoat.com
[hdegoede@redhat.com s/QUIET/LOW_POWER/]
Signed-off-by: NHans de Goede <hdegoede@redhat.com>

Intel Moorestown and Medfield are quite old Intel Atom based
32-bit platforms, which were in limited use in some Android phones,
tablets and consumer electronics more than eight years ago.

There are no bugs or problems ever reported outside from Intel
for breaking any of that platforms for years. It seems no real
users exists who run a more or less fresh kernel on it.
Commit 05f4434b ("ASoC: Intel: remove mfld_machine") which has
been upstream for a while now confirms this theory.

Due to above and to reduce a burden of supporting outdated drivers
we remove the support of outdated platforms completely.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210122114145.38813-1-andriy.shevchenko@linux.intel.comSigned-off-by: NHans de Goede <hdegoede@redhat.com>

Intel Moorestown and Medfield are quite old Intel Atom based
32-bit platforms, which were in limited use in some Android phones,
tablets and consumer electronics more than eight years ago.

There are no bugs or problems ever reported outside from Intel
for breaking any of that platforms for years. It seems no real
users exists who run a more or less fresh kernel on it.
Commit 05f4434b ("ASoC: Intel: remove mfld_machine") which has
been upstream for a while now confirms this theory.

Due to above and to reduce a burden of supporting outdated drivers
we remove the support of outdated platforms completely.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210122114227.39102-1-andriy.shevchenko@linux.intel.comSigned-off-by: NHans de Goede <hdegoede@redhat.com>

The ACPI-enabled Intel MID platforms neither have WDAT table nor proper IDs
to instantiate watchdog device. In order to keep them working move the board
code from arch/x86 to drivers/platform/x86.

Note, the complete SFI support is going to be removed, that's why PDx86
has been chosen as a new home for it. This is the only device which needs
additional code so far.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>

Intel Moorestown and Medfield are quite old Intel Atom based
32-bit platforms, which were in limited use in some Android phones,
tablets and consumer electronics more than eight years ago.

There are no bugs or problems ever reported outside from Intel
for breaking any of that platforms for years. It seems no real
users exists who run more or less fresh kernel on it. The commit
05f4434b ("ASoC: Intel: remove mfld_machine") also in align
with this theory.

Due to above and to reduce a burden of supporting outdated drivers
we remove the support of outdated platforms completely.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>

Intel Moorestown and Medfield are quite old Intel Atom based
32-bit platforms, which were in limited use in some Android phones,
tablets and consumer electronics more than eight years ago.

There are no bugs or problems ever reported outside from Intel
for breaking any of that platforms for years. It seems no real
users exists who run more or less fresh kernel on it. The commit
05f4434b ("ASoC: Intel: remove mfld_machine") also in align
with this theory.

Due to above and to reduce a burden of supporting outdated drivers
we remove the support of outdated platforms completely.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>

Add the uv_sysfs driver to construct a read-only sysfs interface at
/sys/firmware/sgi_uv/ to expose information gathered from UV BIOS. This
information includes:

  * UV Hub descriptions, including physical location
  * Cabling layout between hubs on the fabric
  * PCI topology, including physical location of PCI cards

Together, the information provides a robust physical description of a UV
system, useful for correlating to performance data or performing remote
support.
Signed-off-by: NJustin Ernst <justin.ernst@hpe.com>
Signed-off-by: NBorislav Petkov <bp@suse.de>
Reviewed-by: NSteve Wahl <steve.wahl@hpe.com>
Acked-by: NHans de Goede <hdegoede@redhat.com>
Link: https://lkml.kernel.org/r/20201125175444.279074-4-justin.ernst@hpe.com

AMD Power Management Controller driver a.k.a. amd-pmc driver is the
controller which is meant for the final S2Idle transaction that goes to
the PMFW running on the AMD SMU (System Management Unit) responsible for
tuning of the VDD.

Once all the monitored list or the idle constraints are met, this driver
would go and set the OS_HINT (meaning all the devices have reached to
their lowest state possible) via the SMU mailboxes.

This driver would also provide some debug capabilities via debugfs.
Signed-off-by: NShyam Sundar S K <Shyam-sundar.S-k@amd.com>
Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20201105140531.2955555-1-Shyam-sundar.S-k@amd.comSigned-off-by: NHans de Goede <hdegoede@redhat.com>

Add support for the Intel Platform Monitoring Technology crashlog
interface. This interface provides a few sysfs values to allow for
controlling the crashlog telemetry interface as well as a character
driver to allow for mapping the crashlog memory region so that it can be
accessed after a crashlog has been recorded.

This driver is meant to only support the server version of the crashlog
which is identified as crash_type 1 with a version of zero. Currently no
other types are supported.
Signed-off-by: NAlexander Duyck <alexander.h.duyck@linux.intel.com>
Signed-off-by: NDavid E. Box <david.e.box@linux.intel.com>
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

PMT Telemetry is a capability of the Intel Platform Monitoring Technology.
The Telemetry capability provides access to device telemetry metrics that
provide hardware performance data to users from read-only register spaces.

With this driver present the intel_pmt directory can be populated with
telem<x> devices. These devices will contain the standard intel_pmt sysfs
data and a "telem" binary sysfs attribute which can be used to access the
telemetry data.

Also create a PCI device id list for early telemetry hardware that require
workarounds for known issues.
Signed-off-by: NAlexander Duyck <alexander.h.duyck@linux.intel.com>
Co-developed-by: NDavid E. Box <david.e.box@linux.intel.com>
Signed-off-by: NDavid E. Box <david.e.box@linux.intel.com>
Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Intel Platform Monitoring Technology is meant to provide a common way to
access telemetry and system metrics.

Register mappings are not provided by the driver. Instead, a GUID is read
from a header for each endpoint. The GUID identifies the device and is to
be used with an XML, provided by the vendor, to discover the available set
of metrics and their register mapping.  This allows firmware updates to
modify the register space without needing to update the driver every time
with new mappings. Firmware writes a new GUID in this case to specify the
new mapping.  Software tools with access to the associated XML file can
then interpret the changes.

The module manages access to all Intel PMT endpoints on a system,
independent of the device exporting them. It creates an intel_pmt class
to manage the devices. For each telemetry endpoint, sysfs files provide
GUID and size information as well as a pointer to the parent device the
telemetry came from. Software may discover the association between
endpoints and devices by iterating through the list in sysfs, or by looking
for the existence of the class folder under the device of interest.  A
binary sysfs attribute of the same name allows software to then read or map
the telemetry space for direct access.
Signed-off-by: NAlexander Duyck <alexander.h.duyck@linux.intel.com>
Signed-off-by: NDavid E. Box <david.e.box@linux.intel.com>
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The Dell WMI Systems Management Driver provides a sysfs
interface for systems management to enable BIOS configuration
capability on certain Dell Systems.

This driver allows user to configure Dell systems with a
uniform common interface. To facilitate this, the patch
introduces a generic way for driver to be able to create
configurable BIOS Attributes available in Setup (F2) screen.

Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: mark gross <mgross@linux.intel.com>
Co-developed-by: NMario Limonciello <mario.limonciello@dell.com>
Signed-off-by: NMario Limonciello <mario.limonciello@dell.com>
Co-developed-by: NPrasanth KSR <prasanth.ksr@dell.com>
Signed-off-by: NPrasanth KSR <prasanth.ksr@dell.com>
Signed-off-by: NDivya Bharathi <divya.bharathi@dell.com>
Link: https://lore.kernel.org/r/20201027134944.316730-1-divya.bharathi@dell.comReviewed-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NHans de Goede <hdegoede@redhat.com>

Move the Surface Pro 3 Button driver from platform/x86 to the newly
created platform/surface directory.
Signed-off-by: NMaximilian Luz <luzmaximilian@gmail.com>
Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: NChen Yu <yu.c.chen@intel.com>
Link: https://lore.kernel.org/r/20201009141128.683254-6-luzmaximilian@gmail.comSigned-off-by: NHans de Goede <hdegoede@redhat.com>

Move the Surface 3 Power operation region driver from platform/x86 to
the newly created platform/surface directory.
Signed-off-by: NMaximilian Luz <luzmaximilian@gmail.com>
Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20201009141128.683254-5-luzmaximilian@gmail.comSigned-off-by: NHans de Goede <hdegoede@redhat.com>

Move the Surface 3 Button driver from platform/x86 to the newly created
platform/surface directory.
Signed-off-by: NMaximilian Luz <luzmaximilian@gmail.com>
Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20201009141128.683254-4-luzmaximilian@gmail.comSigned-off-by: NHans de Goede <hdegoede@redhat.com>

Move the Surface 3 WMI driver from platform/x86 to the newly created
platform/surface directory.
Signed-off-by: NMaximilian Luz <luzmaximilian@gmail.com>
Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20201009141128.683254-3-luzmaximilian@gmail.comSigned-off-by: NHans de Goede <hdegoede@redhat.com>

When FUJITSU_LAPTOP is enabled and NEW_LEDS is disabled, it results in the
following Kbuild warning:

WARNING: unmet direct dependencies detected for LEDS_CLASS
  Depends on [n]: NEW_LEDS [=n]
  Selected by [y]:
  - FUJITSU_LAPTOP [=y] && X86 [=y] && X86_PLATFORM_DEVICES [=y] && ACPI [=y] && INPUT [=y] && BACKLIGHT_CLASS_DEVICE [=y] && (ACPI_VIDEO [=n] || ACPI_VIDEO [=n]=n)

The reason is that FUJITSU_LAPTOP selects LEDS_CLASS without depending on
or selecting NEW_LEDS while LEDS_CLASS is subordinate to NEW_LEDS.

Honor the kconfig menu hierarchy to remove kconfig dependency warnings.
Reported-by: NHans de Goede <hdegoede@redhat.com>
Fixes: d89bcc83 ("platform/x86: fujitsu-laptop: select LEDS_CLASS")
Signed-off-by: NNecip Fazil Yildiran <fazilyildiran@gmail.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

When LG_LAPTOP is enabled and NEW_LEDS is disabled, it results in the
following Kbuild warning:

WARNING: unmet direct dependencies detected for LEDS_CLASS
  Depends on [n]: NEW_LEDS [=n]
  Selected by [y]:
  - LG_LAPTOP [=y] && X86 [=y] && X86_PLATFORM_DEVICES [=y] && ACPI [=y] && ACPI_WMI [=y] && INPUT [=y]

The reason is that LG_LAPTOP selects LEDS_CLASS without depending on or
selecting NEW_LEDS while LEDS_CLASS is subordinate to NEW_LEDS.

Honor the kconfig menu hierarchy to remove kconfig dependency warnings.

Fixes: dbf0c5a6 ("platform/x86: Add LG Gram laptop special features driver")
Signed-off-by: NNecip Fazil Yildiran <fazilyildiran@gmail.com>
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: Nmark gross <mgross@linux.intel.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.

Deterministic algorithm:
For each file:
  If not .svg:
    For each line:
      If doesn't contain `\bxmlns\b`:
        For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
	  If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
            If both the HTTP and HTTPS versions
            return 200 OK and serve the same content:
              Replace HTTP with HTTPS.
Signed-off-by: NAlexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

Many Bay Trail and Cherry Trail devices come with a camera attached to
Intel's Image Signal Processor. Linux currently does not have a driver for
these, so they do not work as a camera.

Some of these camera's have a status LED which is controlled through a GPIO
in some cases, e.g. on the Asus T100TA and Asus T200TA, there is a firmware
issue where the LED gets turned on at boot.

This commit adds a Linux LED driver for the camera LED on these devices.
This driver will turn the LED off at boot and also allows controlling the
LED (so the user can repurpose it) through the sysfs LED interface.

Which GPIO is attached to the LED is usually not described in the ACPI
tables, so this driver contains per-system info about the GPIO inside the
driver. This means that this driver only works on systems the driver knows
about.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

Since commit 84af7a61 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.

This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.

There are a variety of indentation styles found.

  a) 4 spaces + '---help---'
  b) 7 spaces + '---help---'
  c) 8 spaces + '---help---'
  d) 1 space + 1 tab + '---help---'
  e) 1 tab + '---help---'    (correct indentation)
  f) 1 tab + 1 space + '---help---'
  g) 1 tab + 2 spaces + '---help---'

In order to convert all of them to 1 tab + 'help', I ran the
following commend:

  $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'
Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>

As the atomisp driver should already be handling the ISP
PCI ID, there's no sense on keeping the dummy driver enabled
in tis case.
Signed-off-by: NMauro Carvalho Chehab <mchehab+huawei@kernel.org>

Slim Bootloader(SBL) is a small open-source boot firmware,
designed for running on certain Intel platforms. SBL can be
thought-of as fulfilling the role of a minimal BIOS
implementation, i.e initializing the hardware and booting
Operating System.

Since SBL is not UEFI compliant, firmware update cannot be triggered
using standard UEFI runtime services. Further considering performance
impact, SBL doesn't look for a firmware update image on every reset
and does so only when firmware update signal is asserted.

SBL exposes an ACPI-WMI device which comes up in sysfs as
/sys/bus/wmi/44FADEB1xxx and this driver adds a
"firmware_update_request" device attribute. This attribute normally
has a value of 0 and userspace can signal SBL to update firmware,
on next reboot, by writing a value of 1 like:

echo 1 > /sys/bus/wmi/devices/44FADEB1xxx/firmware_update_request

This driver only implements a signaling mechanism, the actual firmware
update process and various details like firmware update image format,
firmware image location etc are defined by SBL and are not in the
scope of this driver.

DocLink: https://slimbootloader.github.io/security/firmware-update.htmlSigned-off-by: NJithu Joseph <jithu.joseph@intel.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

Intel Elkhart Lake exposes SCU/PMC as an ACPI device that only supports
IPC functionality so add a platform driver supporting it. Interrupt is
optional so we let intel_scu_ipc_probe() to decide based on the passed
platform data whether it uses interrupt or polling.
Co-developed-by: NDivya Sasidharan <divya.s.sasidharan@intel.com>
Signed-off-by: NDivya Sasidharan <divya.s.sasidharan@intel.com>
Co-developed-by: NRajmohan Mani <rajmohan.mani@intel.com>
Signed-off-by: NRajmohan Mani <rajmohan.mani@intel.com>
Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

This driver only creates a bunch of platform devices sharing resources
belonging to the PMC device. This is pretty much what MFD subsystem is
for so move the driver there, renaming it to intel_pmc_bxt.c which
should be more clear what it is.

MFD subsystem provides nice helper APIs for subdevice creation so
convert the driver to use those. Unfortunately the ACPI device includes
separate resources for most of the subdevices so we cannot simply call
mfd_add_devices() to create all of them but instead we need to call it
separately for each device.

The new MFD driver continues to expose two sysfs attributes that allow
userspace to send IPC commands to the PMC/SCU to avoid breaking any
existing applications that may use these. Generally this is bad idea so
document this in the ABI documentation.
Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The PCI probe driver in intel_pmc_ipc.c is a duplicate of what we
already have in intel_scu_pcidrv.c with the exception that the later also
creates SCU specific devices. Move the PCI IDs from the intel_pmc_ipc.c
to intel_scu.c and use driver_data to detect whether SCU devices need to
be created or not.

Also update Kconfig entry to mention all platforms supported by the
Intel SCU PCI driver and change dependency from X86_INTEL_MID to PCI
which is more generic.
Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

SCU IPC is pretty much the same IPC implemented in the intel_pmc_ipc
driver so drop the duplicate implementation and call directly the SCU
IPC.
Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The SCU IPC functionality is usable outside of Intel MID devices. For
example modern Intel CPUs include the same thing but now it is called
PMC (Power Management Controller) instead of SCU. To make the IPC
available for those split the driver into core part (intel_scu_ipc.c)
and the SCU PCI driver part (intel_scu_pcidrv.c) which then calls the
former before it goes and creates rest of the SCU devices. The SCU IPC
will also register a new class that gets assigned to the device that is
created under the parent PCI device.

We also split the Kconfig symbols so that INTEL_SCU_IPC enables the SCU
IPC library and INTEL_SCU_PCI the SCU driver and convert the users
accordingly. While there remove default y from the INTEL_SCU_PCI symbol
as it is already selected by X86_INTEL_MID.
Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Kconfig section is misplaced. Put it in the same order as it is done
in Makefile for this driver.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

Patch was rebased on top of for-next. Thanks for your patience!

Blaž

I'm resubmitting this patch with review feedback addressed:

https://patchwork.kernel.org/patch/10584079/

The patch was previously not resubmitted because it required a change
that was reverted in the ACPICA. That has since been corrected:

https://github.com/acpica/acpica/commit/9159c09a2a5897a43f78c95cdffc160d399722c3

We've been using this patch for a while and user reports confirm that it
works:

https://github.com/linux-surface/linux-surface

Previous description follows.

>8------------------------------------------------------8<

The MSHW0011 device is a chip that replaces the battery firmware
by using ACPI operation regions on the Surface 3.
It is unclear whether or not the chip will be reused somewhere else
(under Windows, the chip is called "Surface Platform Power Driver"
and the driver is provided by Microsoft).

The values have been obtained by reverse engineering, and are subject to
errors. Looks like it works on overall pretty well.

I couldn't manage to get the IRQ correctly triggered, so I am using a
good old polling thread to check for changes. This is something
to be fixed in a later version.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=106231Signed-off-by: NBlaž Hrastnik <blaz@mxxn.io>
Signed-off-by: NBenjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: NStephen Just <stephenjust@gmail.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

Sofar we have been unable to get permission from the vendors to put the
firmware for touchscreens listed in touchscreen_dmi in linux-firmware.

Some of the tablets with such a touchscreen have a touchscreen driver, and
thus a copy of the firmware, as part of their EFI code.

This commit adds the necessary info for the new EFI embedded-firmware code
to extract these firmwares, making the touchscreen work OOTB without the
user needing to manually add the firmware.
Acked-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: NArd Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20200115163554.101315-10-hdegoede@redhat.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

'paramaters' should be 'parameters'
Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

For better maintenance group modules by companies and functions.
No functional change intended.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

This driver is by no means essential for system to boot up so remove
default y from it.
Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

Some server users set limits on the uncore frequency using MSR 620H, while
running latency sensitive workloads. Here uncore frequency controls
RING/LLC(last-level cache) clocks.

But MSR control is not always possible from the user space, so this driver
provides a sysfs interface to set max and min frequency limits. This MSR
620H is a die scoped in multi-die system or package scoped in non multi-die
systems.

When this driver is loaded, a new directory is created under
 /sys/devices/system/cpu.

For example on a two package Skylake server:
$cd /sys/devices/system/cpu/intel_uncore_frequency

$ls
package_00_die_00 package_01_die_00

$ls package_00_die_00
max_freq_khz  min_freq_khz  initial_max_freq_khz
initial_min_freq_khz

$grep . *
    max_freq_khz:2400000
    min_freq_khz:1200000
    initial_max_freq_khz:2400000
    initial_min_freq_khz:1200000

Here, initial_max_freq_khz and initial_min_freq_khz are read only
attributes to show power up or initial values of max and min frequencies
respectively. Other attributes are read-write, so that users can modify.
Signed-off-by: NSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

Fix ambiguous spelling in the comments.

While here, update two lines to fit one.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

This document describes how an admin can use the dell_rbu driver, rather
than any in-kernel API details.
Signed-off-by: NJonathan Neuschäfer <j.neuschaefer@gmx.net>
Acked-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Add System76 ACPI driver, which adds support for Fn-Fx key
combinations, keyboard backlight, and airplane mode LEDs
on System76 laptops running open source firmware.
Signed-off-by: NJeremy Soller <jeremy@system76.com>
Cc: platform-driver-x86@vger.kernel.org
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

Existing intel_cht_int33fe ACPI pseudo-device driver assumes that
hardware has Type-C connector and register related devices described as
I2C connections in the _CRS resource.

There is at least one hardware (Lenovo Yoga Book YB1-91L/F) with Micro-B
USB connector exists. It has INT33FE device in the DSDT table but
there are only two I2C connection described: PMIC and BQ27452 battery
fuel gauge.

Splitting existing INT33FE driver allow to maintain code for USB Micro-B
(or AB) connector variant separately and make it simpler.

Split driver to intel_cht_int33fe_common.c and
intel_cht_int33fe_{microb,typec}.c. Compile all this sources to one .ko
module to make user experience easier.
Signed-off-by: NYauhen Kharuzhy <jekhor@gmail.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>