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path: root/drivers/platform/x86/lenovo-ymc.c
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2024-12-02module: Convert symbol namespace to string literalPeter Zijlstra
Clean up the existing export namespace code along the same lines of commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo) to __section("foo")") and for the same reason, it is not desired for the namespace argument to be a macro expansion itself. Scripted using git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file; do awk -i inplace ' /^#define EXPORT_SYMBOL_NS/ { gsub(/__stringify\(ns\)/, "ns"); print; next; } /^#define MODULE_IMPORT_NS/ { gsub(/__stringify\(ns\)/, "ns"); print; next; } /MODULE_IMPORT_NS/ { $0 = gensub(/MODULE_IMPORT_NS\(([^)]*)\)/, "MODULE_IMPORT_NS(\"\\1\")", "g"); } /EXPORT_SYMBOL_NS/ { if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+),/) { if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/ && $0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(\)/ && $0 !~ /^my/) { getline line; gsub(/[[:space:]]*\\$/, ""); gsub(/[[:space:]]/, "", line); $0 = $0 " " line; } $0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/, "\\1(\\2, \"\\3\")", "g"); } } { print }' $file; done Requested-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc Acked-by: Greg KH <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2024-09-04platform/x86: lenovo-ymc: Ignore the 0x0 stateGergo Koteles
While booting, Lenovo 14ARB7 reports 'lenovo-ymc: Unknown key 0 pressed' warning. This is caused by lenovo_ymc_probe() calling lenovo_ymc_notify() at probe time to get the initial tablet-mode-switch state and the key-code lenovo_ymc_notify() reads from the firmware is not initialized at probe time yet on the Lenovo 14ARB7. The hardware/firmware does an ACPI notify on the WMI device itself when it initializes the tablet-mode-switch state later on. Add 0x0 YMC state to the sparse keymap to silence the warning. Signed-off-by: Gergo Koteles <soyer@irl.hu> Link: https://lore.kernel.org/r/08ab73bb74c4ad448409f2ce707b1148874a05ce.1724340562.git.soyer@irl.hu [hdegoede@redhat.com: Reword commit message] Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2024-08-08platform/x86: ideapad-laptop: move ymc_trigger_ec from lenovo-ymcGergo Koteles
Some models need to trigger the EC after each YMC event for the yoga mode control to work properly. EC triggering consist of a VPC call from the lenovo-ymc module. Except for this, all VPC calls are in the ideapad-laptop module. Since ideapad-laptop has a notification chain, a new YMC_EVENT action can be added and triggered from the lenovo-ymc module. Then the ideapad-laptop can trigger the EC. If the triggering is in the ideapad-laptop module, then the ec_trigger module parameter should be there as well. Move the ymc_trigger_ec functionality and the ec_trigger module parameter to the ideapad-laptop module. Signed-off-by: Gergo Koteles <soyer@irl.hu> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/d980ab3ac32b5e554f456b0ff17279bfdbe2a203.1721898747.git.soyer@irl.hu Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2023-08-21platform/x86: lenovo-ymc: Add Lenovo Yoga 7 14ACN6 to ec_trigger_quirk_dmi_tableSwapnil Devesh
This adds my laptop Lenovo Yoga 7 14ACN6, with Product Name: 82N7 (from `dmidecode -t1 | grep "Product Name"`) to the ec_trigger_quirk_dmi_table, have tested that this is required for the YMC driver to work correctly on this model. Signed-off-by: Swapnil Devesh <me@sidevesh.com> Reviewed-by: Gergő Köteles <soyer@irl.hu> Link: https://lore.kernel.org/r/18a08a8b173.895ef3b250414.1213194126082324071@sidevesh.com Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2023-08-13platform/x86: lenovo-ymc: Only bind on machines with a convertible DMI ↵Hans de Goede
chassis-type The lenovo-ymc driver is causing the keyboard + touchpad to stop working on some regular laptop models such as the Lenovo ThinkBook 13s G2 ITL 20V9. The problem is that there are YMC WMI GUID methods in the ACPI tables of these laptops, despite them not being Yogas and lenovo-ymc loading causes libinput to see a SW_TABLET_MODE switch with state 1. This in turn causes libinput to ignore events from the builtin keyboard and touchpad, since it filters those out for a Yoga in tablet mode. Similar issues with false-positive SW_TABLET_MODE=1 reporting have been seen with the intel-hid driver. Copy the intel-hid driver approach to fix this and only bind to the WMI device on machines where the DMI chassis-type indicates the machine is a convertible. Add a 'force' module parameter to allow overriding the chassis-type check so that users can easily test if the YMC interface works on models which report an unexpected chassis-type. Fixes: e82882cdd241 ("platform/x86: Add driver for Yoga Tablet Mode switch") Link: https://bugzilla.redhat.com/show_bug.cgi?id=2229373 Cc: André Apitzsch <git@apitzsch.eu> Cc: stable@vger.kernel.org Tested-by: Andrew Kallmeyer <kallmeyeras@gmail.com> Tested-by: Gergő Köteles <soyer@irl.hu> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20230812144818.383230-1-hdegoede@redhat.com
2023-04-06platform/x86: Add driver for Yoga Tablet Mode switchGergo Koteles
This WMI driver for the tablet mode control switch for Lenovo Yoga notebooks was originally written by Gergo Koteles. The mode is mapped to a SW_TABLET_MODE switch capable input device. Andrew followed the suggestions that were posted in reply to Gergo's RFC patch, and on the v1 & v2 versions of this patch to follow-up and get it merged. Changes from Gergo's RFC: - Refactored obtaining a reference to the EC ACPI device needed for the quirk implementation as suggested by Hans de Goede - Applied small fixes and switched to always registering handles with the driver for automatic cleanup as suggested by Barnabás Pőcze. - Merged the lenovo_ymc_trigger_ec function with the ideapad_trigger_ymc_next_read function since it was no longer external. - Added the word "Tablet" to the driver description to hopefully make it more clear. - Fixed the LENOVO_YMC_QUERY_METHOD ID and the name string for the EC APCI device trigged for the quirk - Triggered the input event on probe so that the initial tablet mode state when the driver is loaded is reported to userspace as suggested by Armin Wolf. - Restricted the permissions of the ec_trigger parameter as suggested by Armin Wolf. Also updated the description. We have tested this on the Yoga 7 14AIL7 for the non-quirk path and on the Yoga 7 14ARB7 which has the firmware bug that requires triggering the embedded controller to send the mode change events. This workaround is also used by the Windows drivers. According to reports at https://github.com/lukas-w/yoga-usage-mode, which uses the same WMI devices, the following models should also work: Yoga C940, Ideapad flex 14API, Yoga 9 14IAP7, Yoga 7 14ARB7, etc. Signed-off-by: Gergo Koteles <soyer@irl.hu> Co-developed-by: Andrew Kallmeyer <kallmeyeras@gmail.com> Signed-off-by: Andrew Kallmeyer <kallmeyeras@gmail.com> Link: https://lore.kernel.org/r/20221004214332.35934-1-soyer@irl.hu/ Link: https://lore.kernel.org/r/20230310041726.217447-1-kallmeyeras@gmail.com/ Link: https://lore.kernel.org/r/20230323025200.5462-1-kallmeyeras@gmail.com/ Tested-by: André Apitzsch <git@apitzsch.eu> Link: https://lore.kernel.org/r/20230329014559.44494-3-kallmeyeras@gmail.com Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>