kernel/linux.git/Documentation/admin-guide/laptops, branch v6.12.80

platform/x86: lg-laptop: Fix WMAB call in fan_mode_store()

2025-10-02T11:44:12+00:00

[ Upstream commit 3ed17349f18774c24505b0c21dfbd3cc4f126518 ] When WMAB is called to set the fan mode, the new mode is read from either bits 0-1 or bits 4-5 (depending on the value of some other EC register). Thus when WMAB is called with bits 4-5 zeroed and called again with bits 0-1 zeroed, the second call undoes the effect of the first call. This causes writes to /sys/devices/platform/lg-laptop/fan_mode to have no effect (and causes reads to always report a status of zero). Fix this by calling WMAB once, with the mode set in bits 0,1 and 4,5. When the fan mode is returned from WMAB it always has this form, so there is no need to preserve the other bits. As a bonus, the driver now supports the "Performance" fan mode seen in the LG-provided Windows control app, which provides less aggressive CPU throttling but louder fan noise and shorter battery life. Also, correct the documentation to reflect that 0 corresponds to the default mode (what the Windows app calls "Optimal") and 1 corresponds to the silent mode. Fixes: dbf0c5a6b1f8 ("platform/x86: Add LG Gram laptop special features driver") Link: https://bugzilla.kernel.org/show_bug.cgi?id=204913#c4 Signed-off-by: Daniel Lee Link: https://patch.msgid.link/MN2PR06MB55989CB10E91C8DA00EE868DDC1CA@MN2PR06MB5598.namprd06.prod.outlook.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen Signed-off-by: Sasha Levin

platform/x86: thinkpad-acpi: Add support for hotkey 0x1401

2025-01-09T12:33:31+00:00

commit 7e16ae558a87ac9099b6a93a43f19b42d809fd78 upstream. F8 mode key on Lenovo 2025 platforms use a different key code. Adding support for the new keycode 0x1401. Tested on X1 Carbon Gen 13 and X1 2-in-1 Gen 10. Signed-off-by: Vishnu Sankar Reviewed-by: Mark Pearson Link: https://lore.kernel.org/r/20241227231840.21334-1-vishnuocv@gmail.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen Signed-off-by: Greg Kroah-Hartman

platform/x86: Support for mode FN key

2024-01-24T10:40:55+00:00

New Thinkpads have added a 'Mode' Function key that on Windows allows you to choose the active profile (low-power, balanced, performance) Added suppoort for this hotkey (F8), and have it cycle through the options available. Tested on X1 Carbon G12. Signed-off-by: Mark Pearson Reviewed-by: Hans de Goede Link: https://lore.kernel.org/r/20240120232949.317337-1-mpearson-lenovo@squebb.ca Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86: thinkpad_acpi: sysfs interface to auxmac

2023-09-28T10:12:36+00:00

Newer Thinkpads have a feature called MAC Address Pass-through. This patch provides a sysfs interface that userspace can use to get this auxiliary mac address. Signed-off-by: Fernando Eckhardt Valle Reviewed-by: Hans de Goede Link: https://lore.kernel.org/r/20230926202144.5906-1-fevalle@ipt.br Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

Documentation: admin-guide: correct spelling

2023-02-02T18:04:42+00:00

Correct spelling problems for Documentation/admin-guide/ as reported by codespell. Signed-off-by: Randy Dunlap Reviewed-by: Mukesh Ojha Cc: Tejun Heo Cc: Zefan Li Cc: Johannes Weiner Cc: cgroups@vger.kernel.org Cc: Alasdair Kergon Cc: Mike Snitzer Cc: dm-devel@redhat.com Cc: Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org Cc: linux-mm@kvack.org Link: https://lore.kernel.org/r/20230129231053.20863-2-rdunlap@infradead.org Signed-off-by: Jonathan Corbet

lg-laptop: Move setting of battery charge limit to common location

2022-02-23T10:36:24+00:00

For now leave also the driver specific location, with deprecated warning in documentation. Signed-off-by: Matan Ziv-Av Link: https://lore.kernel.org/r/eca2fa354f60b8a6e5a5c9c8e244fea56616970a.1645278914.git.matan@svgalib.org Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede

platform/x86: thinkpad_acpi: fix documentation for adaptive keyboard

2021-11-16T09:56:53+00:00

The different values were offset by 1. 0 is for "home mode", 1 for "web-browser mode", etc. Moreover, the URL to the laptop's user guide did not work anymore. Signed-off-by: Vincent Bernat Link: https://lore.kernel.org/r/20211109195209.176905-1-vincent@bernat.ch Signed-off-by: Hans de Goede

platform/x86: lg-laptop: Use correct event for keyboard backlight FN-key

2021-08-20T10:09:42+00:00

Use led_classdev_notify_brightness_hw_changed() instead of F16 key. Signed-off-by: Matan Ziv-Av Link: https://lore.kernel.org/r/2196990f167efe6a42d51fb85f4db4cdf4d9e80e.1629291912.git.matan@svgalib.org Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede

platform/x86: lg-laptop: Use correct event for touchpad toggle FN-key

2021-08-20T10:09:41+00:00

Send F21 which is the standard for this key, instead of F13. Signed-off-by: Matan Ziv-Av Link: https://lore.kernel.org/r/b847895c1f170e2e59df5757a4d603d28149f648.1629291912.git.matan@svgalib.org Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede

block_dump: remove comments in docs

2021-05-24T12:47:21+00:00

Now block_dump feature is gone, remove all comments in docs. Signed-off-by: zhangyi (F) Reviewed-by: Jan Kara Reviewed-by: Christoph Hellwig Link: https://lore.kernel.org/r/20210313030146.2882027-4-yi.zhang@huawei.com Signed-off-by: Jens Axboe