platform/kernel/linux-starfive.git
21 months agoplatform/surface: Split memcpy() of struct ssam_event flexible array
Kees Cook [Tue, 27 Sep 2022 00:40:11 +0000 (17:40 -0700)]
platform/surface: Split memcpy() of struct ssam_event flexible array

To work around a misbehavior of the compiler's ability to see into
composite flexible array structs (as detailed in the coming memcpy()
hardening series[1]), split the memcpy() of the header and the payload
so no false positive run-time overflow warning will be generated.

[1] https://lore.kernel.org/linux-hardening/20220901065914.1417829-2-keescook@chromium.org

Cc: Maximilian Luz <luzmaximilian@gmail.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Mark Gross <markgross@kernel.org>
Cc: platform-driver-x86@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com>
Link: https://lore.kernel.org/r/20220927004011.1942739-1-keescook@chromium.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
21 months agoplatform/x86: compal-laptop: Get rid of a few forward declarations
Uwe Kleine-König [Fri, 23 Sep 2022 09:47:59 +0000 (11:47 +0200)]
platform/x86: compal-laptop: Get rid of a few forward declarations

Declarations for static symbols are useless repetition (unless there are
cyclic dependencies).

By changing the order of a few symbols two forward declarations can be
dropped.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20220923094759.87804-1-u.kleine-koenig@pengutronix.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
21 months agoplatform/x86: intel-uncore-freq: Use sysfs_emit() to instead of scnprintf()
ye xingchen [Fri, 23 Sep 2022 06:33:14 +0000 (06:33 +0000)]
platform/x86: intel-uncore-freq: Use sysfs_emit() to instead of scnprintf()

Replace the open-code with sysfs_emit() to simplify the code.

Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Link: https://lore.kernel.org/r/20220923063314.239146-1-ye.xingchen@zte.com.cn
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
21 months agoplatform/x86: dell-smbios-base: Use sysfs_emit()
ye xingchen [Fri, 23 Sep 2022 06:32:33 +0000 (06:32 +0000)]
platform/x86: dell-smbios-base: Use sysfs_emit()

Replace the open-code with sysfs_emit() to simplify the code.

Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Link: https://lore.kernel.org/r/20220923063233.239091-1-ye.xingchen@zte.com.cn
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
21 months agoMerge branch 'platform-drivers-x86-amd-pmf' into review-hans
Hans de Goede [Tue, 27 Sep 2022 12:57:38 +0000 (14:57 +0200)]
Merge branch 'platform-drivers-x86-amd-pmf' into review-hans

21 months agoplatform/x86/amd/pmf: Remove unused power_delta instances
Shyam Sundar S K [Thu, 22 Sep 2022 16:51:18 +0000 (22:21 +0530)]
platform/x86/amd/pmf: Remove unused power_delta instances

Initial version of the PMF ACPI documentation had the concept
of "power_delta" which is removed in the recent revisions.

So the entire cnqf_power_delta structure is never used/updated.
Hence removing it.

Fixes: 1738061c9ec8 ("platform/x86/amd/pmf: Add support for CnQF")
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20220922165118.163165-1-Shyam-sundar.S-k@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
21 months agoplatform/x86/amd/pmf: install notify handler after acpi init
Shyam Sundar S K [Fri, 23 Sep 2022 13:17:24 +0000 (18:47 +0530)]
platform/x86/amd/pmf: install notify handler after acpi init

It is observed that when thinkpad_acpi driver loads before amd-pmf
driver, thinkpad_acpi driver sends the AMT "on" event and the request
immediately will be part of the PMF BIOS "pending requests".

With the current amd-pmf code, as soon as the amd-pmf driver gets
probed, it calls apmf_acpi_init() where the notify handler will be
installed. Handler callback would call amd_pmf_handle_amt() where the
amd_pmf_set_automode() shall update the auto-mode thermals.
In this case, the auto-mode config_store shall have "zeros", as the
auto mode init gets called during the later stage.

To fix this, change the order of the acpi notifer install and call it
after the auto mode initialization is done.

Fixes: 7d77dcc83ada ("platform/x86/amd/pmf: Handle AMT and CQL events for Auto mode")
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Mark Pearson <markpearson@lenovo.com>
Cc: Patil Rajesh Reddy <Patil.Reddy@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20220923131724.1812685-1-Shyam-sundar.S-k@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoDocumentation/ABI/testing/sysfs-amd-pmf: Add ABI doc for AMD PMF
Shyam Sundar S K [Thu, 22 Sep 2022 13:12:02 +0000 (18:42 +0530)]
Documentation/ABI/testing/sysfs-amd-pmf: Add ABI doc for AMD PMF

AMD PMF driver provides the flexibility to turn "on" or "off"
CnQF feature (introduced in the earlier patch).

Add corresponding ABI documentation for the new sysfs node and
also update MAINTAINERS file with this new information

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20220922131202.56529-4-Shyam-sundar.S-k@amd.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86/amd/pmf: Add sysfs to toggle CnQF
Shyam Sundar S K [Thu, 22 Sep 2022 13:12:01 +0000 (18:42 +0530)]
platform/x86/amd/pmf: Add sysfs to toggle CnQF

Whether to turn CnQF on/off by default upon driver load would be decided
by a BIOS flag. Add a sysfs node to provide a way to the user whether to
use static slider or CnQF .

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20220922131202.56529-3-Shyam-sundar.S-k@amd.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86/amd/pmf: Add support for CnQF
Shyam Sundar S K [Thu, 22 Sep 2022 13:12:00 +0000 (18:42 +0530)]
platform/x86/amd/pmf: Add support for CnQF

CnQF (a.k.a Cool and Quiet Framework) extends the static slider concept.
PMF dynamically manages system power limits and fan policy based on system
power trends which is representative of workload trend.

Static slider and CnQF controls are mutually exclusive for system power
budget adjustments. CnQF supports configurable number of modes which can
be unique for AC and DC. Every mode is representative of a system state
characterized by unique steady state and boost behavior.

OEMs can configure the different modes/system states and how the
transition to a mode happens. Whether to have CnQF manage system power
budget dynamically in AC or DC or both is also configurable. Mode changes
due to CnQF don't result in slider position change.

The default OEM values are obtained after evaluating the PMF ACPI function
idx 11 & 12 for AC and DC respectively. Whether to turn ON/OFF by default
is guided by a "flag" passed by the OEM BIOS.

Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20220922131202.56529-2-Shyam-sundar.S-k@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86/amd: pmc: Fix build without debugfs
Nathan Chancellor [Thu, 22 Sep 2022 15:31:00 +0000 (08:31 -0700)]
platform/x86/amd: pmc: Fix build without debugfs

Without CONFIG_DEBUG_FS, the following build error occurs:

  drivers/platform/x86/amd/pmc.c:984:17: error: use of undeclared identifier 'pmc_groups'; did you mean 'set_groups'?
                  .dev_groups = pmc_groups,
                                ^~~~~~~~~~
                                set_groups
  ./include/linux/cred.h:65:13: note: 'set_groups' declared here
  extern void set_groups(struct cred *, struct group_info *);
              ^
  drivers/platform/x86/amd/pmc.c:984:17: error: incompatible pointer types initializing 'const struct attribute_group **' with an expression of type 'void (struct cred *, struct group_info *)' [-Werror,-Wincompatible-pointer-types]
                  .dev_groups = pmc_groups,
                                ^~~~~~~~~~
  2 errors generated.

pmc_groups was only defined inside a CONFIG_DEBUG_FS block but
commit 7f1ea75d499a ("platform/x86/amd: pmc: Add sysfs files for SMU")
intended for these sysfs files to be available outside of debugfs.
Shuffle the necessary functions out of the CONFIG_DEBUG_FS block so that
the file always builds.

Fixes: 7f1ea75d499a ("platform/x86/amd: pmc: Add sysfs files for SMU")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20220922153100.324922-1-nathan@kernel.org
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: hp-wmi: Support touchpad on/off
Daniel Houldsworth [Thu, 22 Sep 2022 11:54:59 +0000 (12:54 +0100)]
platform/x86: hp-wmi: Support touchpad on/off

Add scancodes reported by the touchpad on/off button. The actual disabling
and enabling is done in hardware, and this just reports that change to
userspace.

Signed-off-by: Daniel Houldsworth <dhould3@gmail.com>
Link: https://lore.kernel.org/r/20220922115459.6511-1-dhould3@gmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: int3472/discrete: Drop a forward declaration
Uwe Kleine-König [Tue, 20 Sep 2022 07:01:01 +0000 (09:01 +0200)]
platform/x86: int3472/discrete: Drop a forward declaration

By swapping the definition of skl_int3472_discrete_remove() and
skl_int3472_discrete_probe() the forward declaration of the former can
be dropped. This is a good thing as it removes code duplication.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Daniel Scally <djrscally@gmail.com>
Link: https://lore.kernel.org/r/20220920070101.907596-1-u.kleine-koenig@pengutronix.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: toshiba_acpi: change turn_on_panel_on_resume to static
Yang Yingliang [Tue, 20 Sep 2022 08:44:34 +0000 (16:44 +0800)]
platform/x86: toshiba_acpi: change turn_on_panel_on_resume to static

turn_on_panel_on_resume is only used in toshiba_acpi.c now, change it
to static.

Fixes: 3cb1f40dfdc3 ("drivers/platform: toshiba_acpi: Call HCI_PANEL_POWER_ON on resume on some models")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220920084434.3739493-1-yangyingliang@huawei.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: wmi: Drop forward declaration of static functions
Uwe Kleine-König [Mon, 19 Sep 2022 12:22:13 +0000 (14:22 +0200)]
platform/x86: wmi: Drop forward declaration of static functions

Usually it's not necessary to declare static functions if the symbols are
in the right order. Moving the definition of acpi_wmi_driver down in the
compilation unit allows to drop two such declarations.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20220919122213.852322-1-u.kleine-koenig@pengutronix.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: toshiba_acpi: Remove duplicate include
Yihao Han [Mon, 19 Sep 2022 11:15:18 +0000 (04:15 -0700)]
platform/x86: toshiba_acpi: Remove duplicate include

Remove duplicate include in toshiba_acpi.c.

Signed-off-by: Yihao Han <hanyihao@vivo.com>
Link: https://lore.kernel.org/r/20220919111519.19491-1-hanyihao@vivo.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: msi-laptop: Change DMI match / alias strings to fix module autoloading
Hans de Goede [Sat, 17 Sep 2022 21:04:07 +0000 (23:04 +0200)]
platform/x86: msi-laptop: Change DMI match / alias strings to fix module autoloading

On a MSI S270 with Fedora 37 x86_64 / systemd-251.4 the module does not
properly autoload.

This is likely caused by issues with how systemd-udevd handles the single
quote char (') which is part of the sys_vendor / chassis_vendor strings
on this laptop. As a workaround remove the single quote char + everything
behind it from the sys_vendor + chassis_vendor matches. This fixes
the module not autoloading.

Link: https://github.com/systemd/systemd/issues/24715
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220917210407.647432-1-hdegoede@redhat.com
22 months agoplatform/x86: asus-wmi: Expand support of GPU fan to read RPM and label
Luke D. Jones [Fri, 16 Sep 2022 00:46:23 +0000 (12:46 +1200)]
platform/x86: asus-wmi: Expand support of GPU fan to read RPM and label

The previously added patch to add support for pwm change for TUF laptops
also is usuable for more than TUF. The same method `0x00110014` is
used to read the fan RPM.

Add two extra attributes for reading fan2 plus fan2 label.

Signed-off-by: Luke D. Jones <luke@ljones.dev>
Link: https://lore.kernel.org/r/20220916004623.10992-1-luke@ljones.dev
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoMerge remote-tracking branch 'intel-sst/intel-sst' into review-hans
Hans de Goede [Mon, 19 Sep 2022 11:53:53 +0000 (13:53 +0200)]
Merge remote-tracking branch 'intel-sst/intel-sst' into review-hans

22 months agoplatform/x86/amd: pmc: Add sysfs files for SMU
Mario Limonciello [Wed, 14 Sep 2022 14:18:50 +0000 (09:18 -0500)]
platform/x86/amd: pmc: Add sysfs files for SMU

The CPU/APU SMU FW version and program is currently discoverable by
turning on dynamic debugging or examining debugfs for the amdgpu
driver. To make this more discoverable, create a dedicated sysfs
file for it that userspace can parse without debugging enabled.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20220914141850.259-1-mario.limonciello@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: hp-wmi: Setting thermal profile fails with 0x06
Jorge Lopez [Mon, 12 Sep 2022 19:26:03 +0000 (14:26 -0500)]
platform/x86: hp-wmi: Setting thermal profile fails with 0x06

Error 0x06 (invalid command parameter) is reported by hp-wmi module
when reading the current thermal profile and then proceed to set it
back. The failing condition occurs in Linux NixOS after user
configures the thermal profile to ‘quiet mode’ in Windows.  Quiet Fan
Mode is supported in Windows but was not supported in hp-wmi module.

This fix adds support for PLATFORM_PROFILE_QUIET in hp-wmi module for
HP notebooks other than HP Omen series.  Quiet thermal profile is not
supported in HP Omen series notebooks.

Signed-off-by: Jorge Lopez <jorge.lopez2@hp.com>
Link: https://lore.kernel.org/r/20220912192603.4001-1-jorge.lopez2@hp.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: toshiba_acpi: Set correct parent for input device.
Arvid Norlander [Sun, 11 Sep 2022 19:31:06 +0000 (21:31 +0200)]
platform/x86: toshiba_acpi: Set correct parent for input device.

This solves the input device showing up as a virtual device.

Signed-off-by: Arvid Norlander <lkml@vorpal.se>
Link: https://lore.kernel.org/r/20220911193106.555938-1-lkml@vorpal.se
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agotools/power/x86/intel-speed-select: Release v1.13
Srinivas Pandruvada [Thu, 15 Sep 2022 17:43:44 +0000 (10:43 -0700)]
tools/power/x86/intel-speed-select: Release v1.13

Update version number.

This version includes fixes for:
- fix build failure when using gcc options -Wl,--as-needed
- Fix warning for perf_cap.cpu may be uninitialized
- Fix off by one check for MAX_DIE_PER_PACKAGE
- Fix issue with use of get_physical_die_id instead of
get_physical_die_id

Optimizations:
- Removed unused interfaces and functions
- Better handle package, die, cpu combination by
defining a struct and set at one place instead
at each user level.

New functional change:
- Warn if turbo is disabled and SST turbo-freq feature is requested

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
22 months agotools/power/x86/intel-speed-select: Optimize CPU initialization
Zhang Rui [Sat, 20 Aug 2022 15:58:27 +0000 (23:58 +0800)]
tools/power/x86/intel-speed-select: Optimize CPU initialization

Optimize CPU initialization.
Do cpu related initialization in one function, including setting the cpu
present_cpumask, target_cpumask, and cpu_map and core_count arrays.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
22 months agotools/power/x86/intel-speed-select: Utilize cpu_map to get physical id
Zhang Rui [Sat, 20 Aug 2022 15:58:26 +0000 (23:58 +0800)]
tools/power/x86/intel-speed-select: Utilize cpu_map to get physical id

cpu_map already has the cpu package id, die id information.
Thus there is no need to re-evaluating sysfs attributes or stored data
file to get the package id and die id of a given CPU each time.

In order to unitlize this, cpu_map needs to be created unconditionally.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
22 months agotools/power/x86/intel-speed-select: Remove unused struct clos_config fields
Zhang Rui [Sat, 20 Aug 2022 15:58:25 +0000 (23:58 +0800)]
tools/power/x86/intel-speed-select: Remove unused struct clos_config fields

pkg_id/die_id can be retrieved from struct isst_id, remove the redundant
clos_config->pkg_id/die_id fields.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
22 months agotools/power/x86/intel-speed-select: Enforce isst_id value
Zhang Rui [Sat, 20 Aug 2022 15:58:24 +0000 (23:58 +0800)]
tools/power/x86/intel-speed-select: Enforce isst_id value

Enforce the pkg/die value in struct isst_id are either -1 or a valid
value.

This helps avoid inconsistent or redundant checks.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
22 months agotools/power/x86/intel-speed-select: Do not export get_physical_id
Zhang Rui [Sat, 20 Aug 2022 15:58:23 +0000 (23:58 +0800)]
tools/power/x86/intel-speed-select: Do not export get_physical_id

Now, all the get_physical_pkg/die/core_id() users are inside
isst-config.c, so no need to export these APIs.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
22 months agotools/power/x86/intel-speed-select: Introduce is_cpu_in_power_domain helper
Zhang Rui [Sat, 20 Aug 2022 15:58:22 +0000 (23:58 +0800)]
tools/power/x86/intel-speed-select: Introduce is_cpu_in_power_domain helper

struct isst_id contains cpu, package and die info, and it can represent
a specific SST power domain.

Introduce is_cpu_in_power_domain() helper to identify if a cpu is in a
specified power_domain.

And cleanup the code to use the new helper.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
22 months agotools/power/x86/intel-speed-select: Cleanup get_physical_id usage
Zhang Rui [Sat, 20 Aug 2022 15:58:21 +0000 (23:58 +0800)]
tools/power/x86/intel-speed-select: Cleanup get_physical_id usage

struct isst_id already contains package and die id information, thus
there is no need to get the package and die id information, when struct
isst_id is already available.

Remove unneeded get_physical_package_id/get_physical_die_id usage.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
22 months agotools/power/x86/intel-speed-select: Convert more function to use isst_id
Zhang Rui [Sat, 20 Aug 2022 15:58:20 +0000 (23:58 +0800)]
tools/power/x86/intel-speed-select: Convert more function to use isst_id

With pkg and die info added into struct isst_id, more functions can
be converted to use struct isst_id as parameter.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
22 months agotools/power/x86/intel-speed-select: Add pkg and die in isst_id
Zhang Rui [Sat, 20 Aug 2022 15:58:19 +0000 (23:58 +0800)]
tools/power/x86/intel-speed-select: Add pkg and die in isst_id

Code uses pkg_id and die_id to refer to a specific power domain.

The pkg/die information is already settled at start time. Adding package
id and die id information into struct isst_id so that code does not need
to retrieve them at runtime.

More code cleanups can be done with the package/die info available.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
22 months agotools/power/x86/intel-speed-select: Introduce struct isst_id
Zhang Rui [Sat, 20 Aug 2022 15:58:18 +0000 (23:58 +0800)]
tools/power/x86/intel-speed-select: Introduce struct isst_id

SST control is power-domain based rather than cpu based, on all the
systems including Sapphire Rapids and ealier.

SST core APIs uses cpu id as parameter, and use the underlying pkg_id and
die_id information to find a power domain, this is not straight forward
and introduces obscure logics in the code.

Introduce struct isst_id to represent a SST Power Domain.

All core APIs are converted to use struct isst_id as parameter instead of
using cpu id.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
22 months agotools/power/x86/intel-speed-select: Remove unused core_mask array
Zhang Rui [Sat, 20 Aug 2022 15:58:17 +0000 (23:58 +0800)]
tools/power/x86/intel-speed-select: Remove unused core_mask array

Remove unused core_mask array.

Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
22 months agotools/power/x86/intel-speed-select: Remove dead code
Zhang Rui [Sat, 20 Aug 2022 15:58:16 +0000 (23:58 +0800)]
tools/power/x86/intel-speed-select: Remove dead code

Remove dead code.

Not functional change in this patch

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
22 months agotools/power/x86/intel-speed-select: Fix cpu count for TDP level display
Zhang Rui [Sat, 20 Aug 2022 15:58:15 +0000 (23:58 +0800)]
tools/power/x86/intel-speed-select: Fix cpu count for TDP level display

In the function isst_ctdp_display_information(), call to the function
get_cpu_count() is using get_physical_die_id() instead of
get_physical_package_id(). This will result in wrong display of
CPU count in that level.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
[ Srinivas Pandruvada: fixed subject and change log ]
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
22 months agoleds: simatic-ipc-leds-gpio: Make simatic_ipc_led_gpio_table static
Hans de Goede [Sat, 10 Sep 2022 08:58:36 +0000 (10:58 +0200)]
leds: simatic-ipc-leds-gpio: Make simatic_ipc_led_gpio_table static

simatic_ipc_led_gpio_table is only used inside simatic-ipc-leds-gpio.c,
make it static.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220910085836.84962-1-hdegoede@redhat.com
22 months agoplatform/x86: asus-wmi: Make kbd_rgb_mode_groups static
Hans de Goede [Fri, 9 Sep 2022 21:09:50 +0000 (23:09 +0200)]
platform/x86: asus-wmi: Make kbd_rgb_mode_groups static

kbd_rgb_mode_groups is only used inside asus-wmi.c, make it static.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220909210950.385398-1-hdegoede@redhat.com
22 months agoplatform/mellanox: mlxreg-lc: Make error handling flow consistent
Vadim Pasternak [Sun, 4 Sep 2022 14:11:13 +0000 (17:11 +0300)]
platform/mellanox: mlxreg-lc: Make error handling flow consistent

Use 'goto' statement in error flow of mlxreg_lc_event_handler() at all
places for consistency.

This follow-up patch implementing comments from
https://www.spinics.net/lists/platform-driver-x86/msg34587.html

Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20220904141113.49048-1-vadimp@nvidia.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoACPI: video: Change disable_backlight_sysfs_if quirks to acpi_backlight=native
Hans de Goede [Mon, 29 Aug 2022 13:39:23 +0000 (15:39 +0200)]
ACPI: video: Change disable_backlight_sysfs_if quirks to acpi_backlight=native

Some Toshibas have a broken acpi-video interface for brightness control
and need a special firmware call on resume to turn the panel back on.
So far these have been using the disable_backlight_sysfs_if workaround
to deal with this.

The recent x86/acpi backlight refactoring has broken this workaround:
1. This workaround relies on acpi_video_get_backlight_type() returning
   acpi_video so that the acpi_video code actually runs; and
2. this relies on the actual native GPU driver to offer the sysfs
   backlight interface to userspace.

After the refactor this breaks since the native driver will no
longer register its backlight-device if acpi_video_get_backlight_type()
does not return native and making it return native breaks 1.

Keeping the acpi_video backlight handling on resume active, while not
using it to set the brightness, is necessary because it does a _BCM
call on resume which is necessary to turn the panel back on on resume.

Looking at the DSDT shows that this _BCM call results in a Toshiba
HCI_SET HCI_LCD_BRIGHTNESS call, which turns the panel back on.

This kind of special vendor specific handling really belongs in
the vendor specific acpi driver. An earlier patch in this series
modifies toshiba_acpi to make the necessary HCI_SET call on resume
on affected models.

With toshiba_acpi taking care of the HCI_SET call on resume,
the acpi_video code no longer needs to call _BCM on resume.

So instead of using the (now broken) disable_backlight_sysfs_if
workaround, simply setting acpi_backlight=native to disable
the broken apci-video interface is sufficient fix things now.

After this there are no more users of the disable_backlight_sysfs_if
flag and as discussed above the flag also no longer works as intended,
so remove the disable_backlight_sysfs_if flag entirely.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Arvid Norlander <lkml@vorpal.se>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agodrivers/platform: toshiba_acpi: Call HCI_PANEL_POWER_ON on resume on some models
Hans de Goede [Mon, 29 Aug 2022 13:17:03 +0000 (15:17 +0200)]
drivers/platform: toshiba_acpi: Call HCI_PANEL_POWER_ON on resume on some models

Some Toshibas have a broken acpi-video interface for brightness control, so
far these have been using a special workaround in drivers/acpi/acpi_video.c
which gets activated by the disable_backlight_sysfs_if module-param/quirks.

The recent x86/acpi backlight refactoring has broken this workaround:
1. This workaround relies on acpi_video_get_backlight_type() returning
   acpi_video so that the acpi_video code actually runs; and
2. this relies on the actual native GPU driver to offer the sysfs
   backlight interface to userspace.

After the refactor this breaks since the native driver will no
longer register its backlight-device if acpi_video_get_backlight_type()
does not return native and making it return native breaks 1.

Keeping the acpi_video backlight handling on resume active, while not
using it to set the brightness, is necessary because it does a _BCM
call on resume which is necessary to turn the panel back on on resume.

Looking at the DSDT shows that this _BCM call results in a Toshiba
HCI_SET HCI_LCD_BRIGHTNESS call, which turns the panel back on.

This commit makes toshiba_acpi do a HCI_SET HCI_PANEL_POWER_ON call
on resume on the affected models, so that the (now broken)
acpi_video disable_backlight_sysfs_if workaround will no longer
be necessary.

Note this uses HCI_PANEL_POWER_ON instead of HCI_LCD_BRIGHTNESS
to avoid changing the configured brightness level.

Tested-by: Arvid Norlander <lkml@vorpal.se>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agodocs: ABI: charge_control_end_threshold may not support all values
Arvid Norlander [Fri, 2 Sep 2022 18:00:37 +0000 (20:00 +0200)]
docs: ABI: charge_control_end_threshold may not support all values

Some laptops (for example Toshiba Satellite Z830) only supports some fixed
values. Allow for this and document the expected behaviour in such cases.

Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Arvid Norlander <lkml@vorpal.se>
Link: https://lore.kernel.org/r/20220902180037.1728546-4-lkml@vorpal.se
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: Battery charge mode in toshiba_acpi (sysfs)
Arvid Norlander [Fri, 2 Sep 2022 18:00:36 +0000 (20:00 +0200)]
platform/x86: Battery charge mode in toshiba_acpi (sysfs)

This commit adds the ACPI battery hook which in turns adds the sysfs
entries.

Because the Toshiba laptops only support two modes (eco or normal), which
in testing correspond to 80% and 100% we simply round to the nearest
possible level when set.

It is possible that Toshiba laptops other than the Z830 has different set
points for the charging. If so, a quirk table could be introduced in the
future for this. For now, assume that all laptops that support this feature
work the same way.

Tested on a Toshiba Satellite Z830.

Signed-off-by: Arvid Norlander <lkml@vorpal.se>
Link: https://lore.kernel.org/r/20220902180037.1728546-3-lkml@vorpal.se
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: Battery charge mode in toshiba_acpi (internals)
Arvid Norlander [Fri, 2 Sep 2022 18:00:35 +0000 (20:00 +0200)]
platform/x86: Battery charge mode in toshiba_acpi (internals)

This commit adds the internal functions to control the Toshiba laptop.

Unlike for example ThinkPads where this control is granular here it is
just off/on. When off it charges to 100%. When on it charges to about 80%.

Controlling this setting is done via HCI register 0x00ba. Setting to value
1 will result in limiting the charing to 80% of the battery capacity,
while setting it to 0 will allow charging to 100%.

Reading the current state is a bit weird, and needs a 1 set in the last
position of the query for whatever reason. In addition, the read may
return 0x8d20 (Data not available) rarely, so a retry mechanism is needed.

According to the Windows program used to control the feature the setting
will not take effect until the battery has been discharged to around 50%.
However, in my testing it takes effect as soon as the charge drops below
80%. On Windows Toshiba branded this feature as "Eco charging".

Signed-off-by: Arvid Norlander <lkml@vorpal.se>
Link: https://lore.kernel.org/r/20220902180037.1728546-2-lkml@vorpal.se
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: toshiba_acpi: Add fan RPM reading (hwmon interface)
Arvid Norlander [Fri, 2 Sep 2022 17:40:18 +0000 (19:40 +0200)]
platform/x86: toshiba_acpi: Add fan RPM reading (hwmon interface)

This expands on the previous commit, exporting the fan RPM via hwmon.

This will look something like the following when using the "sensors"
command from lm_sensors:

toshiba_acpi_sensors-acpi-0
Adapter: ACPI interface
fan1:           0 RPM

Signed-off-by: Arvid Norlander <lkml@vorpal.se>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220902174018.1720029-3-lkml@vorpal.se
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: toshiba_acpi: Add fan RPM reading (internals)
Arvid Norlander [Fri, 2 Sep 2022 17:40:17 +0000 (19:40 +0200)]
platform/x86: toshiba_acpi: Add fan RPM reading (internals)

This add the internal feature detection and reading function for fan RPM.

The approach is based on tracing ACPI calls using AMLI (a tracer/debugger
built into ACPI.sys) while using the Windows cooling self-test software.

The call used is {HCI_GET, 0x45, 0, 1, 0, 0} which returns:
{0x0, 0x45, fan_rpm, probably_max_rpm, 0x0, 0x0}

What is probably the max RPM is not currently used.

Signed-off-by: Arvid Norlander <lkml@vorpal.se>
Link: https://lore.kernel.org/r/20220902174018.1720029-2-lkml@vorpal.se
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86/amd: pmc: Add an extra STB message for checking s2idle entry
Mario Limonciello [Mon, 29 Aug 2022 16:29:52 +0000 (11:29 -0500)]
platform/x86/amd: pmc: Add an extra STB message for checking s2idle entry

The `check` callback is run right before the cores are put into HLT.
This will allow checking synchronization problems with other software
that writes into the STB.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20220829162953.5947-5-mario.limonciello@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86/amd: pmc: Always write to the STB
Mario Limonciello [Mon, 29 Aug 2022 16:29:51 +0000 (11:29 -0500)]
platform/x86/amd: pmc: Always write to the STB

The kernel parameter `enable_stb` currently gates the access to the STB
from debugfs and also controls whether the kernel writes events to the
STB.

Even if not accessing STB data from the kernel it's useful to have this
data stored to review the STB. So in suspend/resume always write it.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20220829162953.5947-4-mario.limonciello@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86/amd: pmc: Add defines for STB events
Mario Limonciello [Mon, 29 Aug 2022 16:29:50 +0000 (11:29 -0500)]
platform/x86/amd: pmc: Add defines for STB events

Currently `amd-pmc` has two events, but just adds one to the first to
distinguish the second.  Add a clear definition what these events mean.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20220829162953.5947-3-mario.limonciello@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoACPI: s2idle: Add a new ->check() callback for platform_s2idle_ops
Mario Limonciello [Mon, 29 Aug 2022 16:29:49 +0000 (11:29 -0500)]
ACPI: s2idle: Add a new ->check() callback for platform_s2idle_ops

On some platforms it is found that Linux more aggressively enters s2idle
than Windows enters Modern Standby and this uncovers some synchronization
issues for the platform.  To aid in debugging this class of problems in
the future, add support for an extra optional callback intended for
drivers to emit extra debugging.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/20220829162953.5947-2-mario.limonciello@amd.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoMerge tag 'backlight-detect-refactor-1' into review-hans
Hans de Goede [Mon, 5 Sep 2022 09:01:56 +0000 (11:01 +0200)]
Merge tag 'backlight-detect-refactor-1' into review-hans

Immutable backlight-detect-refactor branch between acpi, drm-* and pdx86

Tag (immutable branch) with v6.0-rc1 + the (acpi/x86) backlight
detect refactor work. For merging into the acpi, drm-* and pdx86
subsystems.

22 months agoplatform/x86: p2sb: Fix UAF when caller uses resource name
Andy Shevchenko [Thu, 1 Sep 2022 11:34:06 +0000 (14:34 +0300)]
platform/x86: p2sb: Fix UAF when caller uses resource name

We have to copy only selected fields from the original resource.
Because a PCI device will be removed immediately after getting
its resources, we may not use any allocated data, hence we may
not copy any pointers.

Consider the following scenario:

  1/ a caller of p2sb_bar() gets the resource;

  2/ the resource has been copied by platform_device_add_data()
     in order to create a platform device;

  3/ the platform device creation will call for the device driver's
     ->probe() as soon as a match found;

  4/ the ->probe() takes given resources (see 2/) and tries to
     access one of its field, i.e. 'name', in the
     __devm_ioremap_resource() to create a pretty looking output;

  5/ but the 'name' is a dangling pointer because p2sb_bar()
     removed a PCI device, which 'name' had been copied to
     the caller's memory.

  6/ UAF (Use-After-Free) as a result.

Kudos to Mika for the initial analisys of the issue.

Fixes: 9745fb07474f ("platform/x86/intel: Add Primary to Sideband (P2SB) bridge support")
Reported-by: kernel test robot <oliver.sang@intel.com>
Suggested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/linux-i2c/YvPCbnKqDiL2XEKp@xsang-OptiPlex-9020/
Link: https://lore.kernel.org/linux-i2c/YtjAswDKfiuDfWYs@xsang-OptiPlex-9020/
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220901113406.65876-1-andriy.shevchenko@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: wmi: Allow duplicate GUIDs for drivers that use struct wmi_driver
Mario Limonciello [Mon, 29 Aug 2022 20:14:59 +0000 (15:14 -0500)]
platform/x86: wmi: Allow duplicate GUIDs for drivers that use struct wmi_driver

The WMI subsystem in the kernel currently tracks WMI devices by
a GUID string not by ACPI device.  The GUID used by the `wmi-bmof`
module however is available from many devices on nearly every machine.

This originally was thought to be a bug, but as it happens on most
machines it is a design mistake.  It has been fixed by tying an ACPI
device to the driver with struct wmi_driver. So drivers that have
moved over to struct wmi_driver can actually support multiple
instantiations of a GUID without any problem.

Add an allow list into wmi.c for GUIDs that the drivers that are known
to use struct wmi_driver.  The list is populated with `wmi-bmof` right
now. The additional instances of that in sysfs with be suffixed with -%d

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20220829201500.6341-1-mario.limonciello@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agodrm/todo: Add entry about dealing with brightness control on devices with > 1 panel
Hans de Goede [Mon, 11 Jul 2022 11:49:34 +0000 (13:49 +0200)]
drm/todo: Add entry about dealing with brightness control on devices with > 1 panel

Add an entry summarizing the discussion about dealing with brightness
control on devices with more then 1 internal panel.

The original discussion can be found here:
https://lore.kernel.org/dri-devel/20220517152331.16217-1-hdegoede@redhat.com/

Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoACPI: video: Fix indentation of video_detect_dmi_table[] entries
Hans de Goede [Sat, 18 Jun 2022 17:19:51 +0000 (19:19 +0200)]
ACPI: video: Fix indentation of video_detect_dmi_table[] entries

The video_detect_dmi_table[] uses an unusual indentation for
before the ".name = ..." named struct initializers.

Instead of being indented with an extra tab compared to
the previous line's '{' these are indented to with only
a single space to allow for long DMI_MATCH() lines without
wrapping.

But over time some entries did not event have the single space
indent in front of the ".name = ..." lines.

Make things consistent by using a single space indent for these
lines everywhere.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoACPI: video: Drop NL5x?U, PF4NU1F and PF5?U?? acpi_backlight=native quirks
Hans de Goede [Sat, 18 Jun 2022 17:15:22 +0000 (19:15 +0200)]
ACPI: video: Drop NL5x?U, PF4NU1F and PF5?U?? acpi_backlight=native quirks

acpi_backlight=native is the default for these, but as the comment
explains the quirk was still necessary because even briefly registering
the acpi_video0 backlight; and then unregistering it once the native
driver showed up, was leading to issues.

After the "ACPI: video: Make backlight class device registration
a separate step" patch from earlier in this patch-series, we no
longer briefly register the acpi_video0 backlight on systems where
the native driver should be used.

So this is no longer an issue an the quirks are no longer needed.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=215683
Tested-by: Werner Sembach <wse@tuxedocomputers.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoACPI: video: Drop "Samsung X360" acpi_backlight=native quirk
Hans de Goede [Sat, 18 Jun 2022 17:06:51 +0000 (19:06 +0200)]
ACPI: video: Drop "Samsung X360" acpi_backlight=native quirk

acpi_backlight=native is the default for the "Samsung X360", but as
the comment explains the quirk was still necessary because even
briefly registering the acpi_video0 backlight; and then unregistering
it once the native driver showed up, was leading to issues.

After the "ACPI: video: Make backlight class device registration
a separate step" patch from earlier in this patch-series, we no
longer briefly register the acpi_video0 backlight on systems where
the native driver should be used.

So this is no longer an issue an the quirk is no longer needed.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoACPI: video: Remove acpi_video_set_dmi_backlight_type()
Hans de Goede [Mon, 20 Jun 2022 09:49:57 +0000 (11:49 +0200)]
ACPI: video: Remove acpi_video_set_dmi_backlight_type()

acpi_video_set_dmi_backlight_type() is troublesome because it may end
up getting called after other backlight drivers have already called
acpi_video_get_backlight_type() resulting in the other drivers
already being registered even though they should not.

In case of the acpi_video backlight, acpi_video_set_dmi_backlight_type()
actually calls acpi_video_unregister_backlight() since that is often
probed earlier, leading to userspace seeing the acpi_video0 class
device being briefly available, leading to races in userspace where
udev probe-rules try to access the device and it is already gone.

All callers have been fixed to no longer call it, so remove
acpi_video_set_dmi_backlight_type() now.

This means we now also no longer need acpi_video_unregister_backlight()
for the remove acpi_video backlight after it was wrongly registered hack,
so remove that too.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: samsung-laptop: Move acpi_backlight=[vendor|native] quirks to ACPI...
Hans de Goede [Sat, 18 Jun 2022 17:01:05 +0000 (19:01 +0200)]
platform/x86: samsung-laptop: Move acpi_backlight=[vendor|native] quirks to ACPI video_detect.c

acpi_video_set_dmi_backlight_type() is troublesome because it may end up
getting called after other backlight drivers have already called
acpi_video_get_backlight_type() resulting in the other drivers
already being registered even though they should not.

Move all the acpi_backlight=[vendor|native] quirks from samsung-laptop to
drivers/acpi/video_detect.c .

Note the X360 -> acpi_backlight=native quirk is not moved because that
already was present in drivers/acpi/video_detect.c .

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: asus-wmi: Move acpi_backlight=native quirks to ACPI video_detect.c
Hans de Goede [Sat, 18 Jun 2022 15:44:58 +0000 (17:44 +0200)]
platform/x86: asus-wmi: Move acpi_backlight=native quirks to ACPI video_detect.c

Remove the asus-wmi quirk_entry.wmi_backlight_native quirk-flag, which
called acpi_video_set_dmi_backlight_type(acpi_backlight_native) and replace
it with acpi/video_detect.c video_detect_dmi_table[] entries using the
video_detect_force_native callback.

acpi_video_set_dmi_backlight_type() is troublesome because it may end up
getting called after other backlight drivers have already called
acpi_video_get_backlight_type() resulting in the other drivers
already being registered even though they should not.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: asus-wmi: Move acpi_backlight=vendor quirks to ACPI video_detect.c
Hans de Goede [Sat, 18 Jun 2022 15:15:24 +0000 (17:15 +0200)]
platform/x86: asus-wmi: Move acpi_backlight=vendor quirks to ACPI video_detect.c

Remove the asus-wmi quirk_entry.wmi_backlight_power quirk-flag, which
called acpi_video_set_dmi_backlight_type(acpi_backlight_vendor) and replace
it with acpi/video_detect.c video_detect_dmi_table[] entries using the
video_detect_force_vendor callback.

acpi_video_set_dmi_backlight_type() is troublesome because it may end up
getting called after other backlight drivers have already called
acpi_video_get_backlight_type() resulting in the other drivers
already being registered even though they should not.

Note no entries are dropped from the dmi_system_id table in asus-nb-wmi.c.
This is because the entries using the removed wmi_backlight_power flag
also use other model specific quirks from the asus-wmi quirk_entry struct.
So the quirk_asus_x55u struct and the entries pointing to it cannot be
dropped.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: asus-wmi: Drop DMI chassis-type check from backlight handling
Hans de Goede [Sun, 5 Jun 2022 15:26:54 +0000 (17:26 +0200)]
platform/x86: asus-wmi: Drop DMI chassis-type check from backlight handling

Remove this check from the asus-wmi backlight handling:

/* Some Asus desktop boards export an acpi-video backlight interface,
   stop this from showing up */
chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
if (chassis_type && !strcmp(chassis_type, "3"))
acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);

This acpi_video_set_dmi_backlight_type(acpi_backlight_vendor) call must be
removed because other changes in this series change the native backlight
drivers to no longer unconditionally register their backlight. Instead
these drivers now do this check:

        if (acpi_video_get_backlight_type(false) != acpi_backlight_native)
                return 0; /* bail */

So leaving this in place can break things on laptops with a broken
DMI chassis-type, which would have GPU native brightness control before
the addition of the acpi_video_get_backlight_type() != native check.

Removing this should be ok now, since the ACPI video code has improved
heuristics for this itself now (which includes a chassis-type check).

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: acer-wmi: Move backlight DMI quirks to acpi/video_detect.c
Hans de Goede [Sat, 4 Jun 2022 16:28:52 +0000 (18:28 +0200)]
platform/x86: acer-wmi: Move backlight DMI quirks to acpi/video_detect.c

Move the backlight DMI quirks to acpi/video_detect.c, so that
the driver no longer needs to call acpi_video_set_dmi_backlight_type().

acpi_video_set_dmi_backlight_type() is troublesome because it may end up
getting called after other backlight drivers have already called
acpi_video_get_backlight_type() resulting in the other drivers
already being registered even though they should not.

Note that even though the DMI quirk table name was video_vendor_dmi_table,
5/6 quirks were actually quirks to use the GPU native backlight.

These 5 quirks also had a callback in their dmi_system_id entry which
disabled the acer-wmi vendor driver; and any DMI match resulted in:

acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);

which disabled the acpi_video driver, so only the native driver was left.
The new entries for these 5/6 devices correctly marks these as needing
the native backlight driver.

Also note that other changes in this series change the native backlight
drivers to no longer unconditionally register their backlight. Instead
these drivers now do this check:

if (acpi_video_get_backlight_type(false) != acpi_backlight_native)
return 0; /* bail */

which without this patch would have broken these 5/6 "special" quirks.

Since I had to look at all the commits adding the quirks anyways, to make
sure that I understood the code correctly, I've also added links to
the various original bugzillas for these quirks to the new entries.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: toshiba_acpi: Stop using acpi_video_set_dmi_backlight_type()
Hans de Goede [Sat, 4 Jun 2022 14:18:05 +0000 (16:18 +0200)]
platform/x86: toshiba_acpi: Stop using acpi_video_set_dmi_backlight_type()

acpi_video_set_dmi_backlight_type() is troublesome because it may end up
getting called after other backlight drivers have already called
acpi_video_get_backlight_type() resulting in the other drivers
already being registered even though they should not.

In case of the acpi_video backlight, acpi_video_set_dmi_backlight_type()
actually calls acpi_video_unregister_backlight() since that is often
probed earlier, leading to userspace seeing the acpi_video0 class
device being briefly available, leading to races in userspace where
udev probe-rules try to access the device and it is already gone.

In case of toshiba_acpi there are no DMI quirks to move to
acpi/video_detect.c, but it also (ab)uses it for transflective
displays. Adding transflective display support to video_detect.c would
be quite involved. But luckily there are only 2 known models with
a transflective display, so we can just add DMI quirks for those.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: apple-gmux: Stop calling acpi/video.h functions
Hans de Goede [Sat, 4 Jun 2022 13:25:39 +0000 (15:25 +0200)]
platform/x86: apple-gmux: Stop calling acpi/video.h functions

Now that acpi_video_get_backlight_type() has apple-gmux detection (using
apple_gmux_present()), it is no longer necessary for the apple-gmux code
to manually remove possibly conflicting drivers.

So remove the handling for this from the apple-gmux driver.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: nvidia-wmi-ec-backlight: Use acpi_video_get_backlight_type()
Hans de Goede [Wed, 17 Aug 2022 12:37:21 +0000 (14:37 +0200)]
platform/x86: nvidia-wmi-ec-backlight: Use acpi_video_get_backlight_type()

Add an acpi_video_get_backlight_type() == acpi_backlight_nvidia_wmi_ec
check. This will make nvidia-wmi-ec-backlight properly honor the user
selecting a different backlight driver through the acpi_backlight=...
kernel commandline option.

Since the auto-detect code check for nvidia-wmi-ec-backlight in
drivers/acpi/video_detect.c already checks that the WMI advertised
brightness-source is the embedded controller, this new check makes it
unnecessary for nvidia_wmi_ec_backlight_probe() to check this itself.

Suggested-by: Daniel Dadap <ddadap@nvidia.com>
Reviewed-by: Daniel Dadap <ddadap@nvidia.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoACPI: video: Add Apple GMUX brightness control detection
Hans de Goede [Sat, 4 Jun 2022 13:21:51 +0000 (15:21 +0200)]
ACPI: video: Add Apple GMUX brightness control detection

On Apple laptops with an Apple GMUX using this for brightness control,
should take precedence of any other brightness control methods.

Add apple-gmux detection to acpi_video_get_backlight_type() using
the already existing apple_gmux_present() helper function.

This will allow removig the (ab)use of:

acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);

Inside the apple-gmux driver.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoACPI: video: Add Nvidia WMI EC brightness control detection (v3)
Hans de Goede [Sat, 4 Jun 2022 12:06:18 +0000 (14:06 +0200)]
ACPI: video: Add Nvidia WMI EC brightness control detection (v3)

On some new laptop designs a new Nvidia specific WMI interface is present
which gives info about panel brightness control and may allow controlling
the brightness through this interface when the embedded controller is used
for brightness control.

When this WMI interface is present and indicates that the EC is used,
then this interface should be used for brightness control.

Changes in v2:
- Use the new shared nvidia-wmi-ec-backlight.h header for the
  WMI firmware API definitions
- ACPI_VIDEO can now be enabled on non X86 too,
  adjust the Kconfig changes to match this.

Changes in v3:
- Use WMI_BRIGHTNESS_GUID define

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Daniel Dadap <ddadap@nvidia.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoACPI: video: Refactor acpi_video_get_backlight_type() a bit
Hans de Goede [Sat, 4 Jun 2022 12:38:24 +0000 (14:38 +0200)]
ACPI: video: Refactor acpi_video_get_backlight_type() a bit

Refactor acpi_video_get_backlight_type() so that the heuristics /
detection steps are stricly in order of descending precedence.

Also move the comments describing the steps to when the various steps are
actually done, to avoid the comments getting out of sync with the code.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: nvidia-wmi-ec-backlight: Move fw interface definitions to a header...
Hans de Goede [Wed, 17 Aug 2022 12:03:32 +0000 (14:03 +0200)]
platform/x86: nvidia-wmi-ec-backlight: Move fw interface definitions to a header (v2)

Move the WMI interface definitions to a header, so that the definitions
can be shared with drivers/acpi/video_detect.c .

Changes in v2:
- Add missing Nvidia copyright header
- Move WMI_BRIGHTNESS_GUID to nvidia-wmi-ec-backlight.h as well

Suggested-by: Daniel Dadap <ddadap@nvidia.com>
Reviewed-by: Daniel Dadap <ddadap@nvidia.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agodrm/radeon: Register ACPI video backlight when skipping radeon backlight registration
Hans de Goede [Mon, 16 May 2022 14:04:17 +0000 (16:04 +0200)]
drm/radeon: Register ACPI video backlight when skipping radeon backlight registration

Typically the acpi_video driver will initialize before radeon, which
used to cause /sys/class/backlight/acpi_video0 to get registered and then
radeon would register its own radeon_bl# device later. After which
the drivers/acpi/video_detect.c code unregistered the acpi_video0 device
to avoid there being 2 backlight devices.

This means that userspace used to briefly see 2 devices and the
disappearing of acpi_video0 after a brief time confuses the systemd
backlight level save/restore code, see e.g.:
https://bbs.archlinux.org/viewtopic.php?id=269920

To fix this the ACPI video code has been modified to make backlight class
device registration a separate step, relying on the drm/kms driver to
ask for the acpi_video backlight registration after it is done setting up
its native backlight device.

Add a call to the new acpi_video_register_backlight() when radeon skips
registering its own backlight device because of e.g. the firmware_flags
or the acpi_video_get_backlight_type() return value. This ensures that
if the acpi_video backlight device should be used, it will be available
before the radeon drm_device gets registered with userspace.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agodrm/amdgpu: Register ACPI video backlight when skipping amdgpu backlight registration
Hans de Goede [Mon, 16 May 2022 09:32:33 +0000 (11:32 +0200)]
drm/amdgpu: Register ACPI video backlight when skipping amdgpu backlight registration

Typically the acpi_video driver will initialize before amdgpu, which
used to cause /sys/class/backlight/acpi_video0 to get registered and then
amdgpu would register its own amdgpu_bl# device later. After which
the drivers/acpi/video_detect.c code unregistered the acpi_video0 device
to avoid there being 2 backlight devices.

This means that userspace used to briefly see 2 devices and the
disappearing of acpi_video0 after a brief time confuses the systemd
backlight level save/restore code, see e.g.:
https://bbs.archlinux.org/viewtopic.php?id=269920

To fix this the ACPI video code has been modified to make backlight class
device registration a separate step, relying on the drm/kms driver to
ask for the acpi_video backlight registration after it is done setting up
its native backlight device.

Add a call to the new acpi_video_register_backlight() when amdgpu skips
registering its own backlight device because of either the firmware_flags
or the acpi_video_get_backlight_type() return value. This ensures that
if the acpi_video backlight device should be used, it will be available
before the amdgpu drm_device gets registered with userspace.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agodrm/nouveau: Register ACPI video backlight when nv_backlight registration fails (v2)
Hans de Goede [Sat, 30 Apr 2022 12:29:00 +0000 (14:29 +0200)]
drm/nouveau: Register ACPI video backlight when nv_backlight registration fails (v2)

Typically the acpi_video driver will initialize before nouveau, which
used to cause /sys/class/backlight/acpi_video0 to get registered and then
nouveau would register its own nv_backlight device later. After which
the drivers/acpi/video_detect.c code unregistered the acpi_video0 device
to avoid there being 2 backlight devices.

This means that userspace used to briefly see 2 devices and the
disappearing of acpi_video0 after a brief time confuses the systemd
backlight level save/restore code, see e.g.:
https://bbs.archlinux.org/viewtopic.php?id=269920

To fix this the ACPI video code has been modified to make backlight class
device registration a separate step, relying on the drm/kms driver to
ask for the acpi_video backlight registration after it is done setting up
its native backlight device.

Add a call to the new acpi_video_register_backlight() when native backlight
device registration has failed / was skipped to ensure that there is a
backlight device available before the drm_device gets registered with
userspace.

Changes in v2:
- Add nouveau_acpi_video_register_backlight() wrapper to avoid unresolved
  symbol errors on non X86

Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agodrm/i915: Call acpi_video_register_backlight() (v3)
Hans de Goede [Sat, 30 Apr 2022 13:54:36 +0000 (15:54 +0200)]
drm/i915: Call acpi_video_register_backlight() (v3)

On machins without an i915 opregion the acpi_video driver immediately
probes the ACPI video bus and used to also immediately register
acpi_video# backlight devices when supported.

Once the drm/kms driver then loaded later and possibly registered
a native backlight device then the drivers/acpi/video_detect.c code
unregistered the acpi_video0 device to avoid there being 2 backlight
devices (when acpi_video_get_backlight_type()==native).

This means that userspace used to briefly see 2 devices and the
disappearing of acpi_video0 after a brief time confuses the systemd
backlight level save/restore code, see e.g.:
https://bbs.archlinux.org/viewtopic.php?id=269920

To fix this the ACPI video code has been modified to make backlight class
device registration a separate step, relying on the drm/kms driver to
ask for the acpi_video backlight registration after it is done setting up
its native backlight device.

Add a call to the new acpi_video_register_backlight() after the i915 calls
acpi_video_register() (after setting up the i915 opregion) so that the
acpi_video backlight devices get registered on systems where the i915
native backlight device is not registered.

Changes in v2:
-Only call acpi_video_register_backlight() when a panel is detected

Changes in v3:
-Add a new intel_acpi_video_register() helper which checks if a panel
 is present and then calls acpi_video_register_backlight()

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoACPI: video: Remove code to unregister acpi_video backlight when a native backlight...
Hans de Goede [Fri, 29 Apr 2022 11:00:15 +0000 (13:00 +0200)]
ACPI: video: Remove code to unregister acpi_video backlight when a native backlight registers

Remove the code to unregister acpi_video backlight devices when
a native backlight device gets registered later.

Now that the acpi_video backlight device registration is a separate step
which runs later, after the drm/kms driver is done setting up its own
native backlight device, it is no longer necessary to monitor for a
native (BACKLIGHT_RAW) device showing up later and to then unregister
the acpi_video backlight device(s).

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoACPI: video: Make backlight class device registration a separate step (v2)
Hans de Goede [Thu, 28 Apr 2022 15:41:46 +0000 (17:41 +0200)]
ACPI: video: Make backlight class device registration a separate step (v2)

On x86/ACPI boards the acpi_video driver will usually initialize before
the kms driver (except i915). This causes /sys/class/backlight/acpi_video0
to show up and then the kms driver registers its own native backlight
device after which the drivers/acpi/video_detect.c code unregisters
the acpi_video0 device (when acpi_video_get_backlight_type()==native).

This means that userspace briefly sees 2 devices and the disappearing of
acpi_video0 after a brief time confuses the systemd backlight level
save/restore code, see e.g.:
https://bbs.archlinux.org/viewtopic.php?id=269920

To fix this make backlight class device registration a separate step
done by a new acpi_video_register_backlight() function. The intend is for
this to be called by the drm/kms driver *after* it is done setting up its
own native backlight device. So that acpi_video_get_backlight_type() knows
if a native backlight will be available or not at acpi_video backlight
registration time, avoiding the add + remove dance.

Note the new acpi_video_register_backlight() function is also called from
a delayed work to ensure that the acpi_video backlight devices does get
registered if necessary even if there is no drm/kms driver or when it is
disabled.

Changes in v2:
- Make register_backlight_delay a module parameter, mainly so that it can
  be disabled by Nvidia binary driver users

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoACPI: video: Simplify acpi_video_unregister_backlight()
Hans de Goede [Fri, 29 Apr 2022 11:29:31 +0000 (13:29 +0200)]
ACPI: video: Simplify acpi_video_unregister_backlight()

When acpi_video_register() has not run yet the video_bus_head will be
empty, so there is no need to check the register_count flag first.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoACPI: video: Remove acpi_video_bus from list before tearing it down
Hans de Goede [Thu, 28 Apr 2022 15:53:51 +0000 (17:53 +0200)]
ACPI: video: Remove acpi_video_bus from list before tearing it down

Move the list_del removing an acpi_video_bus from video_bus_head
on teardown to before the teardown is done, to avoid code iterating
over the video_bus_head list seeing acpi_video_bus objects on there
which are (partly) torn down already.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoACPI: video: Drop backlight_device_get_by_type() call from acpi_video_get_backlight_t...
Hans de Goede [Thu, 28 Apr 2022 12:45:35 +0000 (14:45 +0200)]
ACPI: video: Drop backlight_device_get_by_type() call from acpi_video_get_backlight_type()

All x86/ACPI kms drivers which register native/BACKLIGHT_RAW type
backlight devices call acpi_video_backlight_use_native() now. This sets
__acpi_video_get_backlight_type()'s internal static native_available flag.

This makes the backlight_device_get_by_type(BACKLIGHT_RAW) check
unnecessary.

Relying on the cached native_available value not only is simpler, it will
also work correctly in cases where then native backlight registration was
skipped because of acpi_video_backlight_use_native() returning false.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agodrm/nouveau: Don't register backlight when another backlight should be used (v2)
Hans de Goede [Fri, 15 Apr 2022 20:25:01 +0000 (22:25 +0200)]
drm/nouveau: Don't register backlight when another backlight should be used (v2)

Before this commit when we want userspace to use the acpi_video backlight
device we register both the GPU's native backlight device and acpi_video's
firmware acpi_video# backlight device. This relies on userspace preferring
firmware type backlight devices over native ones.

Registering 2 backlight devices for a single display really is
undesirable, don't register the GPU's native backlight device when
another backlight device should be used.

Changes in v2:
- Add nouveau_acpi_video_backlight_use_native() wrapper to avoid unresolved
  symbol errors on non X86

Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: asus-wmi: Increase FAN_CURVE_BUF_LEN to 32
Luke D. Jones [Sun, 28 Aug 2022 07:46:38 +0000 (19:46 +1200)]
platform/x86: asus-wmi: Increase FAN_CURVE_BUF_LEN to 32

Fix for TUF laptops returning with an -ENOSPC on calling
asus_wmi_evaluate_method_buf() when fetching default curves. The TUF method
requires at least 32 bytes space.

This also moves and changes the pr_debug() in fan_curve_check_present() to
pr_warn() in fan_curve_get_factory_default() so that there is at least some
indication in logs of why it fails.

Signed-off-by: Luke D. Jones <luke@ljones.dev>
Link: https://lore.kernel.org/r/20220828074638.5473-1-luke@ljones.dev
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: dell-wmi: Add WMI event 0x0012 0x0003 to the list
Pali Rohár [Sat, 27 Aug 2022 13:30:40 +0000 (15:30 +0200)]
platform/x86: dell-wmi: Add WMI event 0x0012 0x0003 to the list

It looks like that on Dell Latitude E6440 is WMI event 0x0012 0x0003 sent
when display changes brightness. When it happens kernel prints
"dell_wmi: Unknown WMI event type 0x12" message into dmesg.

So ignore it for now to not spam dmesg.

Signed-off-by: Pali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20220827133040.15932-1-pali@kernel.org
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoMerge tag 'platform-drivers-x86-simatec-1' into review-hans
Hans de Goede [Thu, 1 Sep 2022 14:53:38 +0000 (16:53 +0200)]
Merge tag 'platform-drivers-x86-simatec-1' into review-hans

Tag (immutable branch) for:
v6.0-rc1 + "[PATCH v6 0/7] add support for another simatic board" series
for merging into the gpio, leds and pdx86 subsystems.

22 months agoplatform/x86: simatic-ipc: add new model 427G
Henning Schild [Thu, 25 Aug 2022 10:44:22 +0000 (12:44 +0200)]
platform/x86: simatic-ipc: add new model 427G

This adds support for the Siemens Simatic IPC427G. A board which
basically works like the 227G added in a previous patch. So all there is
to do is to add the station_id and make it take all the 227G branches.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Henning Schild <henning.schild@siemens.com>
Link: https://lore.kernel.org/r/20220825104422.14156-8-henning.schild@siemens.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: simatic-ipc: enable watchdog for 227G
Henning Schild [Thu, 25 Aug 2022 10:44:21 +0000 (12:44 +0200)]
platform/x86: simatic-ipc: enable watchdog for 227G

Just load the watchdog module, after having identified that machine.
That watchdog module does not have any autoloading support.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Henning Schild <henning.schild@siemens.com>
Link: https://lore.kernel.org/r/20220825104422.14156-7-henning.schild@siemens.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoleds: simatic-ipc-leds-gpio: add new model 227G
Henning Schild [Thu, 25 Aug 2022 10:44:20 +0000 (12:44 +0200)]
leds: simatic-ipc-leds-gpio: add new model 227G

This adds support of the Siemens Simatic IPC227G. Its LEDs are connected
to GPIO pins provided by the gpio-f7188x module. We make sure that
gets loaded, if not enabled in the kernel config no LED support will be
available.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Henning Schild <henning.schild@siemens.com>
Link: https://lore.kernel.org/r/20220825104422.14156-6-henning.schild@siemens.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agogpio-f7188x: use unique labels for banks/chips
Henning Schild [Thu, 25 Aug 2022 10:44:19 +0000 (12:44 +0200)]
gpio-f7188x: use unique labels for banks/chips

So that drivers building on top can find those pins with GPIO_LOOKUP
helpers.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Simon Guinot <simon.guinot@sequanux.org>
Signed-off-by: Henning Schild <henning.schild@siemens.com>
Acked-by: Bartosz Golaszewski <brgl@bgdev.pl>
Link: https://lore.kernel.org/r/20220825104422.14156-5-henning.schild@siemens.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agogpio-f7188x: Add GPIO support for Nuvoton NCT6116
Henning Schild [Thu, 25 Aug 2022 10:44:18 +0000 (12:44 +0200)]
gpio-f7188x: Add GPIO support for Nuvoton NCT6116

Add GPIO support for Nuvoton NCT6116 chip. Nuvoton SuperIO chips are
very similar to the ones from Fintek. In other subsystems they also
share drivers and are called a family of drivers.

For the GPIO subsystem the only difference is that the direction bit is
reversed and that there is only one data bit per pin. On the SuperIO
level the logical device is another one.

On a chip level we do not have a manufacturer ID to check and also no
revision.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Simon Guinot <simon.guinot@sequanux.org>
Signed-off-by: Henning Schild <henning.schild@siemens.com>
Acked-by: Bartosz Golaszewski <brgl@bgdev.pl>
Link: https://lore.kernel.org/r/20220825104422.14156-4-henning.schild@siemens.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agogpio-f7188x: add a prefix to macros to keep gpio namespace clean
Henning Schild [Thu, 25 Aug 2022 10:44:17 +0000 (12:44 +0200)]
gpio-f7188x: add a prefix to macros to keep gpio namespace clean

Subsequent patches will touch that file, apply some nice to have style
changes before actually adding functional changes.

Signed-off-by: Henning Schild <henning.schild@siemens.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Bartosz Golaszewski <brgl@bgdev.pl>
Link: https://lore.kernel.org/r/20220825104422.14156-3-henning.schild@siemens.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agogpio-f7188x: switch over to using pr_fmt
Henning Schild [Thu, 25 Aug 2022 10:44:16 +0000 (12:44 +0200)]
gpio-f7188x: switch over to using pr_fmt

Subsequent patches will touch that file, apply some nice to have style
changes before actually adding functional changes.

Signed-off-by: Henning Schild <henning.schild@siemens.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Simon Guinot <simon.guinot@sequanux.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Bartosz Golaszewski <brgl@bgdev.pl>
Link: https://lore.kernel.org/r/20220825104422.14156-2-henning.schild@siemens.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: intel_cht_int33fe: Fix comment according to the code flow
Andy Shevchenko [Wed, 24 Aug 2022 15:21:15 +0000 (18:21 +0300)]
platform/x86: intel_cht_int33fe: Fix comment according to the code flow

We don't use software_node_register_nodes() in the code, fix the comment.

Fixes: 140355e5db8b ("platform/x86: intel_cht_int33fe: Convert software node array to group")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220824152115.88012-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/mellanox: Remove redundant 'NULL' check
Vadim Pasternak [Tue, 23 Aug 2022 20:19:37 +0000 (23:19 +0300)]
platform/mellanox: Remove redundant 'NULL' check

Remove 'NULL' check for 'data->hpdev.client' in error flow of
mlxreg_lc_probe(). It cannot be 'NULL' at this point.

Fixes: b4b830a34d80  ("platform/mellanox: mlxreg-lc: Fix error flow and extend verbosity")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20220823201937.46855-5-vadimp@nvidia.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/mellanox: Remove unnecessary code
Vadim Pasternak [Tue, 23 Aug 2022 20:19:36 +0000 (23:19 +0300)]
platform/mellanox: Remove unnecessary code

Remove redundant 'NULL' check for of if 'data->notifier'.

Replace 'return err' by 'return 0' in mlxreg_lc_probe().

Fixes: 62f9529b8d5c87b ("platform/mellanox: mlxreg-lc: Add initial support for Nvidia line card devices")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20220823201937.46855-4-vadimp@nvidia.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/mellanox: mlxreg-lc: Fix locking issue
Vadim Pasternak [Tue, 23 Aug 2022 20:19:35 +0000 (23:19 +0300)]
platform/mellanox: mlxreg-lc: Fix locking issue

Fix locking issues:
- mlxreg_lc_state_update() takes a lock when set or clear
  "MLXREG_LC_POWERED".
- All the devices can be deleted before MLXREG_LC_POWERED flag is cleared.

To fix it:
- Add lock() / unlock() at the beginning / end of
  mlxreg_lc_event_handler() and remove locking from
  mlxreg_lc_power_on_off() and mlxreg_lc_enable_disable()
- Add locked version of mlxreg_lc_state_update() -
  mlxreg_lc_state_update_locked() for using outside
  mlxreg_lc_event_handler().

(2) Remove redundant NULL check for of if 'data->notifier'.

Fixes: 62f9529b8d5c87b ("platform/mellanox: mlxreg-lc: Add initial support for Nvidia line card devices")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20220823201937.46855-3-vadimp@nvidia.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/mellanox: mlxreg-lc: Fix coverity warning
Vadim Pasternak [Tue, 23 Aug 2022 20:19:34 +0000 (23:19 +0300)]
platform/mellanox: mlxreg-lc: Fix coverity warning

Fix smatch warning:
drivers/platform/mellanox/mlxreg-lc.c:866 mlxreg_lc_probe() warn: passing zero to 'PTR_ERR'
by removing 'err = PTR_ERR(regmap)'.

Fixes: b4b830a34d80 ("platform/mellanox: mlxreg-lc: Fix error flow and extend verbosity")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20220823201937.46855-2-vadimp@nvidia.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
22 months agoplatform/x86: acer-wmi: Acer Aspire One AOD270/Packard Bell Dot keymap fixes
Hans de Goede [Mon, 29 Aug 2022 16:35:44 +0000 (18:35 +0200)]
platform/x86: acer-wmi: Acer Aspire One AOD270/Packard Bell Dot keymap fixes

2 keymap fixes for the Acer Aspire One AOD270 and the same hardware
rebranded as Packard Bell Dot SC:

1. The F2 key is marked with a big '?' symbol on the Packard Bell Dot SC,
this sends WMID_HOTKEY_EVENTs with a scancode of 0x27 add a mapping
for this.

2. Scancode 0x61 is KEY_SWITCHVIDEOMODE. Usually this is a duplicate
input event with the "Video Bus" input device events. But on these devices
the "Video Bus" does not send events for this key. Map 0x61 to KEY_UNKNOWN
instead of using KE_IGNORE so that udev/hwdb can override it on these devs.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220829163544.5288-1-hdegoede@redhat.com
23 months agoplatform/x86: msi-laptop: Add msi_scm_disable_hw_fn_handling() helper
Hans de Goede [Fri, 26 Aug 2022 11:14:53 +0000 (13:14 +0200)]
platform/x86: msi-laptop: Add msi_scm_disable_hw_fn_handling() helper

Add a msi_scm_disable_hw_fn_handling() to remove the duplicate code
for this in the resume and init paths.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220826111453.178962-2-hdegoede@redhat.com
23 months agoplatform/x86: msi-laptop: Add msi_scm_model_exit() helper
Hans de Goede [Fri, 26 Aug 2022 11:14:52 +0000 (13:14 +0200)]
platform/x86: msi-laptop: Add msi_scm_model_exit() helper

The probe-error-exit and remove paths both duplicate the exact same code
to undo load_scm_model_init(). Add a helper for this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220826111453.178962-1-hdegoede@redhat.com
23 months agoplatform/x86: msi-laptop: Fix resource cleanup
Hans de Goede [Thu, 25 Aug 2022 14:13:36 +0000 (16:13 +0200)]
platform/x86: msi-laptop: Fix resource cleanup

Fix the input-device not getting free-ed on probe-errors and
fix the msi_touchpad_dwork not getting cancelled on neither
probe-errors nor on remove.

Fixes: 143a4c0284dc ("msi-laptop: send out touchpad on/off key")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220825141336.208597-3-hdegoede@redhat.com
23 months agoplatform/x86: msi-laptop: Simplify ec_delay handling
Hans de Goede [Thu, 25 Aug 2022 14:13:35 +0000 (16:13 +0200)]
platform/x86: msi-laptop: Simplify ec_delay handling

There is no reason to have both non-delayed and delayed work structs
for the rfkill and touchpad work.

Instead simply call schedule_delayed_work() with a delay of 0 for
the quirks->ec_delay == false case.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220825141336.208597-2-hdegoede@redhat.com