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3d677f12ea
linux/drivers/platform/x86
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Esteve Varela Colominas 3d677f12ea platform/x86: thinkpad_acpi: Allow the FnLock LED to change state 
On many recent ThinkPad laptops, there's a new LED next to the ESC key,
that indicates the FnLock status.
When the Fn+ESC combo is pressed, FnLock is toggled, which causes the
Media Key functionality to change, making it so that the media keys
either perform their media key function, or function as an F-key by
default. The Fn key can be used the access the alternate function at any
time.

With the current linux kernel, the LED doens't change state if you press
the Fn+ESC key combo. However, the media key functionality *does*
change. This is annoying, since the LED will stay on if it was on during
bootup, and it makes it hard to keep track what the current state of the
FnLock is.

This patch calls an ACPI function, that gets the current media key
state, when the Fn+ESC key combo is pressed. Through testing it was
discovered that this function causes the LED to update correctly to
reflect the current state when this function is called.

The relevant ACPI calls are the following:
\_SB_.PCI0.LPC0.EC0_.HKEY.GMKS: Get media key state, returns 0x603 if the FnLock mode is enabled, and 0x602 if it's disabled.
\_SB_.PCI0.LPC0.EC0_.HKEY.SMKS: Set media key state, sending a 1 will enable FnLock mode, and a 0 will disable it.

Relevant discussion:
https://bugzilla.kernel.org/show_bug.cgi?id=207841
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1881015

Signed-off-by: Esteve Varela Colominas <esteve.varela@gmail.com>
Link: https://lore.kernel.org/r/20210315195823.23212-1-esteve.varela@gmail.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2021-03-21 17:46:45 +01:00
..
dell platform/x86: Move all dell drivers to their own subdirectory 2021-02-04 13:23:55 +01:00
intel_speed_select_if platform/x86: ISST: Mark mmio_range_devid_0 and mmio_range_devid_1 with static keyword 2020-12-08 16:30:55 +01:00
acer-wireless.c acer-wireless: send an EV_SYN/SYN_REPORT between state changes 2020-12-07 16:10:11 +01:00
acer-wmi.c platform/x86: acer-wmi: Don't use ACPI_EXCEPTION() 2021-02-04 15:15:19 +01:00
acerhdf.c thermal/core: Remove ms based delay fields 2021-01-19 22:23:49 +01:00
amd-pmc.c platform/x86: amd-pmc: put device on error paths 2021-02-02 19:33:44 +01:00
amilo-rfkill.c
apple-gmux.c platform/x86: apple-gmux: Replace HTTP links with HTTPS ones 2020-07-15 13:01:20 +03:00
asus-laptop.c ACPI: Test for ACPI_SUCCESS rather than !ACPI_FAILURE 2021-01-27 18:43:07 +01:00
asus-nb-wmi.c platform/x86: asus-wmi: Add support for SW_TABLET_MODE on UX360 2020-10-28 12:47:37 +01:00
asus-wireless.c
asus-wmi.c platform/x86: asus-wmi: Add userspace notification for performance mode change 2020-11-24 14:39:13 +01:00
asus-wmi.h platform/x86: asus-wmi: Add support for SW_TABLET_MODE on UX360 2020-10-28 12:47:37 +01:00
classmate-laptop.c x86/platform: classmate-laptop: add WiFi media button 2020-12-08 11:18:03 +01:00
compal-laptop.c
eeepc-laptop.c platform/x86: eeepc-laptop: Drop duplicate check for led_classdev_unregister() 2020-05-07 19:39:32 +03:00
eeepc-wmi.c
fujitsu-laptop.c
fujitsu-tablet.c
gpd-pocket-fan.c
hdaps.c treewide: Remove uninitialized_var() usage 2020-07-16 12:35:15 -07:00
hp_accel.c
hp-wireless.c
hp-wmi.c platform/x86: hp-wmi: Disable tablet-mode reporting by default 2021-01-25 22:06:49 +01:00
huawei-wmi.c
i2c-multi-instantiate.c platform/x86: i2c-multi-instantiate: Don't create platform device for INT3515 ACPI nodes 2021-01-04 15:54:45 +01:00
ibm_rtl.c
ideapad-laptop.c platform/x86: ideapad-laptop: add "always on USB charging" control support 2021-02-04 10:21:43 +01:00
intel_atomisp2_led.c platform/x86: Add new intel_atomisp2_led driver 2020-07-09 22:47:27 +03:00
intel_atomisp2_pm.c
intel_bxtwc_tmu.c
intel_cht_int33fe_common.c platform/x86: intel_cht_int33fe: Drop double check for ACPI companion device 2020-07-09 22:40:36 +03:00
intel_cht_int33fe_common.h
intel_cht_int33fe_microb.c
intel_cht_int33fe_typec.c
intel_chtdc_ti_pwrbtn.c
intel_int0002_vgpio.c
intel_ips.c
intel_ips.h
intel_menlow.c
intel_mrfld_pwrbtn.c
intel_oaktrail.c
intel_pmc_core_pltdrv.c platform/x86: intel_pmc_core: do not create a static struct device 2020-09-24 14:05:21 +03:00
intel_pmc_core.c platform/x86: intel_pmc_core: Assign boolean values to a bool variable 2020-11-09 15:02:40 +01:00
intel_pmc_core.h platform/x86: intel_pmc_core: Fix the slp_s0 counter displayed value 2020-10-07 23:06:29 +02:00
intel_pmt_class.c platform/x86: pmt: Fix a potential Oops on error in probe 2020-11-24 12:43:40 +01:00
intel_pmt_class.h platform/x86: Intel PMT class driver 2020-11-04 11:14:12 +00:00
intel_pmt_crashlog.c platform/x86: Intel PMT Crashlog capability driver 2020-11-04 11:14:38 +00:00
intel_pmt_telemetry.c platform/x86: Intel PMT Telemetry capability driver 2020-11-04 11:14:27 +00:00
intel_punit_ipc.c
intel_scu_ipc.c platform/x86: intel_scu_ipc: Increase virtual timeout from 3 to 5 seconds 2021-02-11 16:49:10 +01:00
intel_scu_ipcutil.c platform/x86: intel_scu_ipcutil: Convert to use new SCU IPC API 2020-04-24 11:17:41 +01:00
intel_scu_pcidrv.c sfi: Remove framework for deprecated firmware 2021-02-15 20:09:46 +01:00
intel_scu_pltdrv.c platform/x86: Add Elkhart Lake SCU/PMC support 2020-05-05 20:26:16 +03:00
intel_scu_wdt.c platform/x86: intel_scu_wdt: Drop mistakenly added const 2021-02-05 12:54:27 +02:00
intel_telemetry_core.c platform/x86: intel_telemetry: Add telemetry_get_pltdata() 2020-04-24 11:18:30 +01:00
intel_telemetry_debugfs.c platform/x86: intel_pmc_ipc: Convert to MFD 2020-04-24 11:18:44 +01:00
intel_telemetry_pltdrv.c platform/x86: intel_pmc_ipc: Convert to MFD 2020-04-24 11:18:44 +01:00
intel_turbo_max_3.c
intel-hid.c platform/x86: intel-hid: Support Lenovo ThinkPad X1 Tablet Gen 2 2021-03-06 10:24:53 +01:00
intel-rst.c
intel-smartconnect.c
intel-uncore-frequency.c platform/x86/intel-uncore-freq: Add Sapphire Rapids server support 2021-02-03 13:10:34 +01:00
intel-vbtn.c platform/x86: intel-vbtn: Eval VBDL after registering our notifier 2021-01-25 21:34:36 +01:00
intel-wmi-sbl-fw-update.c platform/x86: Add Slim Bootloader firmware update signaling driver 2020-05-05 20:27:44 +03:00
intel-wmi-thunderbolt.c
Kconfig ACPI: platform: Hide ACPI_PLATFORM_PROFILE option 2021-02-24 14:52:41 +01:00
lg-laptop.c platform/x86: lg-laptop: Drop duplicate check for led_classdev_unregister() 2020-05-07 20:14:17 +03:00
Makefile platform/x86: Move all dell drivers to their own subdirectory 2021-02-04 13:23:55 +01:00
mlx-platform.c platform/x86: mlx-platform: Fix item counter assignment for MSN2700/ComEx system 2020-12-08 11:14:49 +01:00
msi-laptop.c
msi-wmi.c platform/x86: msi-wmi: Fix variable 'status' set but not used compiler warning 2021-02-04 13:35:20 +01:00
mxm-wmi.c
panasonic-laptop.c platform/x86: panasonic-laptop: Add sysfs attributes for firmware brightness registers 2020-11-10 14:49:50 +01:00
pcengines-apuv2.c platform/x86: pcengines-apuv2: Fix typo on define of AMD_FCH_GPIO_REG_GPIO55_DEVSLP0 2020-09-24 14:04:53 +03:00
peaq-wmi.c
pmc_atom.c
samsung-laptop.c platform/x86: samsung-laptop: Drop duplicate check for led_classdev_unregister() 2020-05-07 20:14:24 +03:00
samsung-q10.c
sony-laptop.c platform/x86: remove unneeded break 2020-10-28 12:32:06 +01:00
system76_acpi.c platform/x86: system76-acpi: Fix brightness_set schedule while atomic 2020-07-09 22:40:36 +03:00
tc1100-wmi.c
thinkpad_acpi.c platform/x86: thinkpad_acpi: Allow the FnLock LED to change state 2021-03-21 17:46:45 +01:00
topstar-laptop.c
toshiba_acpi.c platform/x86: toshiba_acpi: Fix the wrong variable assignment 2020-11-26 15:48:46 +01:00
toshiba_bluetooth.c
toshiba_haps.c
toshiba-wmi.c
touchscreen_dmi.c platform/x86: touchscreen_dmi: Add info for the Jumper EZpad 7 tablet 2021-02-03 12:03:05 +01:00
uv_sysfs.c x86/platform/uv: Add sysfs hubless leaves 2020-12-07 19:51:05 +01:00
wmi-bmof.c
wmi.c platform/x86: remove unneeded break 2020-10-28 12:32:06 +01:00
xiaomi-wmi.c
xo1-rfkill.c
xo15-ebook.c