- 16 Jun, 2021 32 commits
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Maximilian Luz authored
Currently, debugging unknown events requires writing a custom driver. This is somewhat difficult, slow to adapt, and not entirely user-friendly for quickly trying to figure out things on devices of some third-party user. We can do better. We already have a user-space interface intended for debugging SAM EC requests, so let's add support for receiving events to that. This commit provides support for receiving events by reading from the controller file. It additionally introduces two new IOCTLs to control which event categories will be forwarded. Specifically, a user-space client can specify which target categories it wants to receive events from by registering the corresponding notifier(s) via the IOCTLs and after that, read the received events by reading from the controller device. Signed-off-by:
Maximilian Luz <luzmaximilian@gmail.com> Reviewed-by:
Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20210604134755.535590-5-luzmaximilian@gmail.comSigned-off-by:
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Maximilian Luz authored
It's 2021, update the copyright accordingly. Signed-off-by:
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Maximilian Luz authored
We can already enable and disable SAM events via one of two ways: either via a (non-observer) notifier tied to a specific event group, or a generic event enable/disable request. In some instances, however, neither method may be desirable. The first method will tie the event enable request to a specific notifier, however, when we want to receive notifications for multiple event groups of the same target category and forward this to the same notifier callback, we may receive duplicate events, i.e. one event per registered notifier. The second method will bypass the internal reference counting mechanism, meaning that a disable request will disable the event regardless of any other client driver using it, which may break the functionality of that driver. To address this problem, add new functions that allow enabling and disabling of events via the event reference counting mechanism built into the controller, without needing to register a notifier. This can then be used in combination with observer notifiers to process multiple events of the same target category without duplication in the same callback function. Signed-off-by:
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Maximilian Luz authored
Currently, each SSAM event notifier is directly tied to one group of events. This makes sense as registering a notifier will automatically take care of enabling the corresponding event group and normally drivers only need notifications for a very limited number of events, associated with different callbacks for each group. However, there are rare cases, especially for debugging, when we want to get notifications for a whole event target category instead of just a single group of events in that category. Registering multiple notifiers, i.e. one per group, may be infeasible due to two issues: a) we might not know every event enable/disable specification as some events are auto-enabled by the EC and b) forwarding this to the same callback will lead to duplicate events as we might not know the full event specification to perform the appropriate filtering. This commit introduces observer-notifiers, which are notifiers that are not tied to a specific event group and do not attempt to manage any events. In other words, they can be registered without enabling any event group or incrementing the corresponding reference count and just act as silent observers, listening to all currently/previously enabled events based on their match-specification. Essentially, this allows us to register one single notifier for a full event target category, meaning that we can process all events of that target category in a single callback without duplication. Specifically, this will be used in the cdev debug interface to forward events to user-space via a device file from which the events can be read. Signed-off-by:
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Mykola Kostenok authored
It causes mlxreg-hotplug probing failure: request_threaded_irq() returns -EINVAL due to true value of condition: ((irqflags & IRQF_SHARED) && (irqflags & IRQF_NO_AUTOEN)) after flag "IRQF_NO_AUTOEN" has been added to: err = devm_request_irq(&pdev->dev, priv->irq, mlxreg_hotplug_irq_handler, IRQF_TRIGGER_FALLING | IRQF_SHARED | IRQF_NO_AUTOEN, "mlxreg-hotplug", priv); This reverts commit bee3ecfe ("platform/mellanox: mlxreg-hotplug: move to use request_irq by IRQF_NO_AUTOEN flag"). Signed-off-by:
Mykola Kostenok <c_mykolak@nvidia.com> Acked-by:
Vadim Pasternak <vadimp@nvidia.com> Link: https://lore.kernel.org/r/20210603172827.2599908-1-c_mykolak@nvidia.comSigned-off-by:
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Maximilian Luz authored
When we fail to open the device file due to DTX being shut down, the mutex is initialized but never destroyed. We are destroying it when releasing the file, so add the missing call in the failure path as well. Fixes: 1d609992 ("platform/surface: Add DTX driver") Signed-off-by:
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kernel test robot authored
drivers/platform/x86/firmware_attributes_class.c:11:5: warning: symbol 'fw_attr_inuse' was not declared. Should it be static? Reported-by:
kernel test robot <lkp@intel.com> Signed-off-by:
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Hans de Goede authored
The struct tlmi_pwd_setting display_name member is initialized, but never read. Remove it and the TLMI_PWDTYPE_MAXLEN define. While at it also remove some other unused [MAX]LEN defines. Signed-off-by:
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Mark Pearson authored
For Lenovo platforms that support a WMI interface to the BIOS add support, using the firmware-attributes class, to allow users to access and modify various BIOS related settings. Signed-off-by:
Mark Pearson <markpearson@lenovo.com> Link: https://lore.kernel.org/r/20210530223111.25929-3-markpearson@lenovo.comReviewed-by:
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Mark Pearson authored
Update Dell WMI sysman driver to use newly implemented helper module. Reviewed-by:
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Mark Pearson authored
platform/x86: firmware_attributes_class: Create helper file for handling firmware-attributes class registration events This offers shared code for registering the firmware_attributes_class, which is used by the Dell and Lenovo WMI management drivers. Reported-by:
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Maximilian Luz authored
Disabling events silently fails due to the wrong command ID being used. Instead of the command ID for the disable call, the command ID for the enable call was being used. This causes the disable call to enable the event instead. As the event is already enabled when we call this function, the EC silently drops this command and does nothing. Use the correct command ID for disabling the event to fix this. Fixes: c167b9c7 ("platform/surface: Add Surface Aggregator subsystem") Signed-off-by:
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Jiapeng Chong authored
The error code is missing in this code scenario, add the error code '-EINVAL' to the return value 'error'. Eliminate the follow smatch warning: drivers/platform/x86/toshiba_acpi.c:2834 toshiba_acpi_setup_keyboard() warn: missing error code 'error'. Reported-by:
Abaci Robot <abaci@linux.alibaba.com> Signed-off-by:
Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Link: https://lore.kernel.org/r/1622628348-87035-1-git-send-email-jiapeng.chong@linux.alibaba.comSigned-off-by:
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Hans de Goede authored
Fix the comment on the entry for the Chuwi Hi10 Pro tablet: 1. Replace "Prus" type with "Pro". 2. Fix the model number, the Chuwi Hi10 Pro is the CWI529, not the CWI597. Signed-off-by:
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Perry Yuan authored
add support for Dell privacy driver for the Dell units equipped hardware privacy design, which protect users privacy of audio and camera from hardware level. Once the audio or camera privacy mode activated, any applications will not get any audio or video stream when user pressed ctrl+F4 hotkey, audio privacy mode will be enabled, micmute led will be also changed accordingly The micmute led is fully controlled by hardware & EC(embedded controller) and camera mute hotkey is Ctrl+F9. Currently design only emits SW_CAMERA_LENS_COVER event while the camera lens shutter will be changed by EC & HW(hardware) control *The flow is like this: 1) User presses key. HW does stuff with this key (timeout timer is started) 2) WMI event is emitted from BIOS to kernel 3) WMI event is received by dell-privacy 4) KEY_MICMUTE emitted from dell-privacy 5) Userland picks up key and modifies kcontrol for SW mute 6) Codec kernel driver catches and calls ledtrig_audio_set 7) dell-privacy notifies EC, the timeout is cancelled and the HW mute is activated. If the EC is not notified then the HW mic mute will activate when the timeout triggers, just a bit later than with the active ack. Signed-off-by:
Perry Yuan <perry_yuan@dell.com> Link: https://lore.kernel.org/r/20210506115605.1504-1-Perry_Yuan@Dell.com [hdegoede@redhat.com: Rework Kconfig/Makefile bits + other small fixups] Reviewed-by:
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Hans de Goede authored
Rename dell-wmi.c to dell-wmi-base.c, so that we can have other dell-wmi-foo.c files which can be added to dell-wmi.ko as "plugins" controlled by separate boolean Kconfig options. Signed-off-by: -
Til Jasper Ullrich authored
The X1 Carbon Gen 9 uses two fans instead of one like the previous generation. This adds support for the second fan. It has been tested on my X1 Carbon Gen 9 (20XXS00100) and works fine. Signed-off-by:
Til Jasper Ullrich <tju@tju.me> Link: https://lore.kernel.org/r/20210525150950.14805-1-tju@tju.meSigned-off-by:
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Jiapeng Chong authored
Eliminate the follow smatch warning: drivers/platform/x86/thinkpad_acpi.c:7942 volume_write() warn: inconsistent indenting. Reported-by:
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Hans de Goede authored
VPC event bit 10 gets set on a Yoga 300-11IBR when the EC believes that the device has changed between laptop/tent/stand/tablet mode. The EC relies on getting angle info from 2 accelerometers through a special windows service calling a DSM on the DUAL250E ACPI-device. Linux does not do this, making the laptop/tent/stand/tablet mode info unreliable. Ignore VPC event bit 10 to avoid the warnings triggered by the default case in ideapad_acpi_notify(). Note that the plan for Linux is to have iio-sensor-proxy read the 2 accelerometers and have it provide info about which mode 360° hinges 2-in-1s to the rest of userspace: https://gitlab.freedesktop.org/hadess/iio-sensor-proxy/-/issues/216Signed-off-by:
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Maximilian Luz authored
5th- and 6th-generation Surface devices have all SAM clients defined in ACPI, except for the platform profile/performance mode which his handled via the WSID (Windows Surface Integration Device). Thus, the node groups for those devices are the same and we can just use a single one instead of re-defining the same one over and over again. Signed-off-by:
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Maximilian Luz authored
Add support for the 13" Intel version of the Surface Laptop 4. Use the existing node group for the Surface Laptop 3 since the 15" AMD version already shares its WSID HID with its predecessor and there don't seem to be any significant differences with regards to SAM. Signed-off-by:
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Maximilian Luz authored
The 15" AMD version of the Surface Laptop 4 shares its WSID HID with the 15" AMD version of the Surface Laptop 3. Update the comments accordingly. Signed-off-by:
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Luke D. Jones authored
The quirks added to asus-nb-wmi for the ASUS ROG Zephyrus G14 and G15 are wrong, they tell the asus-wmi code to use the vendor specific WMI backlight interface. But there is no such interface on these laptops. As a side effect, these quirks stop the acpi_video driver to register since they make acpi_video_get_backlight_type() return acpi_backlight_vendor, leaving only the native AMD backlight driver in place, which is the one we want. This happy coincidence is being replaced with a new quirk in drivers/acpi/video_detect.c which actually sets the backlight_type to acpi_backlight_native fixinf this properly. This reverts commit 13bceda6 ("platform/x86: asus-nb-wmi: add support for ASUS ROG Zephyrus G14 and G15"). Signed-off-by:
Luke D. Jones <luke@ljones.dev> Link: https://lore.kernel.org/r/20210419074915.393433-3-luke@ljones.devSigned-off-by:
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Luke D. Jones authored
This is a preparation revert for reverting the "add support for ASUS ROG Zephyrus G14 and G15" change. This reverts commit 67186653 ("platform/x86: asus-nb-wmi: Drop duplicate DMI quirk structures") Signed-off-by:
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Mario Limonciello authored
This driver was originally intended to support some HP laptops, but later support was added for Xioami and AMD laptops. Rename it to make it clear that it supports a larger variety of systems. Signed-off-by:
Mario Limonciello <mario.limonciello@amd.com> Link: https://lore.kernel.org/r/20210519174405.30155-1-mario.limonciello@amd.comSigned-off-by:
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Hans de Goede authored
The pr_debug() call in toshiba_haps_notify() is missing a newline at the end of the string, add this. BugLink: https://bugs.debian.org/799193Reported-by:
Salvatore Bonaccorso <carnil@debian.org> Signed-off-by:
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Wolfram Sang authored
Those blobs can only be read. So, don't confuse users with 'writable' flags. Also, remove S_IFREG because debugfs takes care of that. Reviewed-by:
Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by:
Wolfram Sang <wsa+renesas@sang-engineering.com> Link: https://lore.kernel.org/r/20210517100746.29663-2-wsa+renesas@sang-engineering.comSigned-off-by:
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Wolfram Sang authored
Andy asked me to do it before working further on the code. Reviewed-by:
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Rajneesh Bhardwaj authored
- My linux.intel.com email is no longer valid, update it to my gmail id. Signed-off-by:
Rajneesh Bhardwaj <irenic.rajneesh@gmail.com> Link: https://lore.kernel.org/r/20210513153825.77214-1-irenic.rajneesh@gmail.comSigned-off-by:
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Yang Li authored
Making '==' operation with ESM_STATUS_CMD_UNSUCCESSFUL directly after calling the function inb() is more efficient, so assignment to 'cmd_status' is redundant. Eliminate the following clang_analyzer warning: drivers/platform/x86/dell/dcdbas.c:397:11: warning: Although the value stored to 'cmd_status' is used in the enclosing expression, the value is never actually read from 'cmd_status' No functional change. Reported-by:
Yang Li <yang.lee@linux.alibaba.com> Link: https://lore.kernel.org/r/1620809825-84105-1-git-send-email-yang.lee@linux.alibaba.comReviewed-by:
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Hans de Goede authored
The Type-C connector on these devices is connected to DP-2 not DP-1, so the reference must be to the DD04 child-node of the GPU, rather then the DD02 child-node. Signed-off-by:
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Prasanth KSR authored
1. Check acpi type before assignment of each property value 2. Add boundary check for properties count Co-developed-by:
Divya Bharathi <divya.bharathi@dell.com> Signed-off-by:
Prasanth KSR <prasanth.ksr@dell.com> Link: https://lore.kernel.org/r/20210512102530.9704-1-prasanth.ksr@dell.comReviewed-by:
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- 23 May, 2021 8 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Thomas Gleixner: "Two perf fixes: - Do not check the LBR_TOS MSR when setting up unrelated LBR MSRs as this can cause malfunction when TOS is not supported - Allocate the LBR XSAVE buffers along with the DS buffers upfront because allocating them when adding an event can deadlock" * tag 'perf-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/lbr: Remove cpuc->lbr_xsave allocation from atomic context perf/x86: Avoid touching LBR_TOS MSR for Arch LBR -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull locking fixes from Thomas Gleixner: "Two locking fixes: - Invoke the lockdep tracepoints in the correct place so the ordering is correct again - Don't leave the mutex WAITER bit stale when the last waiter is dropping out early due to a signal as that forces all subsequent lock operations needlessly into the slowpath until it's cleaned up again" * tag 'locking-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal locking/lockdep: Correct calling tracepoints -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fixes from Thomas Gleixner: "A few fixes for irqchip drivers: - Allocate interrupt descriptors correctly on Mainstone PXA when SPARSE_IRQ is enabled; otherwise the interrupt association fails - Make the APPLE AIC chip driver depend on APPLE - Remove redundant error output on devm_ioremap_resource() failure" * tag 'irq-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip: Remove redundant error printing irqchip/apple-aic: APPLE_AIC should depend on ARCH_APPLE ARM: PXA: Fix cplds irqdesc allocation when using legacy mode -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Borislav Petkov: - Fix how SEV handles MMIO accesses by forwarding potential page faults instead of killing the machine and by using the accessors with the exact functionality needed when accessing memory. - Fix a confusion with Clang LTO compiler switches passed to the it - Handle the case gracefully when VMGEXIT has been executed in userspace * tag 'x86_urgent_for_v5.13_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/sev-es: Use __put_user()/__get_user() for data accesses x86/sev-es: Forward page-faults which happen during emulation x86/sev-es: Don't return NULL from sev_es_get_ghcb() x86/build: Fix location of '-plugin-opt=' flags x86/sev-es: Invalidate the GHCB after completing VMGEXIT x86/sev-es: Move sev_es_put_ghcb() in prep for follow on patch
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull powerpc fixes from Michael Ellerman: - Fix breakage of strace (and other ptracers etc.) when using the new scv ABI (Power9 or later with glibc >= 2.33). - Fix early_ioremap() on 64-bit, which broke booting on some machines. Thanks to Dmitry V. Levin, Nicholas Piggin, Alexey Kardashevskiy, and Christophe Leroy. * tag 'powerpc-5.13-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/64s/syscall: Fix ptrace syscall info with scv syscalls powerpc/64s/syscall: Use pt_regs.trap to distinguish syscall ABI difference between sc and scv syscalls powerpc: Fix early setup to make early_ioremap() work
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Linus Torvalds authored
Merge tag 'kbuild-fixes-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Fix short log indentation for tools builds - Fix dummy-tools to adjust to the latest stackprotector check * tag 'kbuild-fixes-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: dummy-tools: adjust to stricter stackprotector check scripts/jobserver-exec: Fix a typo ("envirnoment") tools build: Fix quiet cmd indentation
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Linus Torvalds authored
Merge misc fixes from Andrew Morton: "10 patches. Subsystems affected by this patch series: mm (pagealloc, gup, kasan, and userfaultfd), ipc, selftests, watchdog, bitmap, procfs, and lib" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: userfaultfd: hugetlbfs: fix new flag usage in error path lib: kunit: suppress a compilation warning of frame size proc: remove Alexey from MAINTAINERS linux/bits.h: fix compilation error with GENMASK watchdog: reliable handling of timestamps kasan: slab: always reset the tag in get_freepointer_safe() tools/testing/selftests/exec: fix link error ipc/mqueue, msg, sem: avoid relying on a stack reference past its expiry Revert "mm/gup: check page posion status for coredump." mm/shuffle: fix section mismatch warning
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