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bcd57b07fd
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Esteve Varela Colominas bcd57b07fd platform/x86: thinkpad_acpi: Allow the FnLock LED to change state 
[ Upstream commit 3d677f12ea ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-04-10 13:36:09 +02:00
..
accessibility
acpi ACPI: processor: Fix CPU0 wakeup in acpi_idle_play_dead() 2021-04-07 15:00:08 +02:00
amba amba: Fix resource leak for drivers without .remove 2021-03-04 11:38:02 +01:00
android
ata ata: ahci_brcm: Add back regulators management 2021-03-04 11:37:45 +01:00
atm atm: idt77252: fix null-ptr-dereference 2021-03-30 14:31:50 +02:00
auxdisplay auxdisplay: ht16k33: Fix refresh rate handling 2021-03-04 11:38:00 +01:00
base driver core: clear deferred probe reason on probe retry 2021-04-07 15:00:13 +02:00
bcma
block xen-blkback: don't leak persistent grants from xen_blkbk_map() 2021-03-30 14:32:09 +02:00
bluetooth Bluetooth: btqca: Add valid le states quirk 2021-03-11 14:17:22 +01:00
bus bus: ti-sysc: Fix warning on unbind if reset is not deasserted 2021-04-10 13:36:07 +02:00
cdrom
char tpm, tpm_tis: Decorate tpm_get_timeouts() with request_locality() 2021-03-09 11:11:10 +01:00
clk clk: qcom: gcc-sc7180: Use floor ops for the correct sdcc1 clk 2021-03-30 14:31:58 +02:00
clocksource clocksource/drivers/mxs_timer: Add missing semicolon when DEBUG is defined 2021-03-04 11:37:57 +01:00
connector
counter counter: stm32-timer-cnt: fix ceiling miss-alignment with reload register 2021-03-25 09:04:16 +01:00
cpufreq cpufreq: blacklist Arm Vexpress platforms in cpufreq-dt-platdev 2021-03-30 14:31:49 +02:00
cpuidle
crypto crypto: sun4i-ss - initialize need_fallback 2021-03-04 11:38:32 +01:00
dax device-dax: Fix default return code of range_parse() 2021-03-04 11:38:15 +01:00
dca
devfreq
dio
dma dmaengine: idxd: set DMA channel to be private 2021-03-04 11:37:57 +01:00
dma-buf
edac EDAC/amd64: Do not load on family 0x15, model 0x13 2021-03-07 12:34:08 +01:00
eisa
extcon extcon: Fix error handling in extcon_dev_register 2021-04-07 15:00:11 +02:00
firewire firewire: nosy: Fix a use-after-free bug in nosy_ioctl() 2021-04-07 15:00:11 +02:00
firmware firmware/efi: Fix a use after bug in efi_mem_reserve_persistent 2021-03-25 09:04:18 +01:00
fpga
fsi
gnss
gpio gpiolib: acpi: Add missing IRQF_ONESHOT 2021-03-30 14:31:49 +02:00
gpu drm/msm: Ratelimit invalid-fence message 2021-04-10 13:36:08 +02:00
greybus
hid HID: logitech-dj: add support for the new lightspeed connection iteration 2021-03-17 17:06:24 +01:00
hsi HSI: Fix PM usage counter unbalance in ssi_hw_init 2021-03-04 11:37:52 +01:00
hv Drivers: hv: vmbus: Avoid use-after-free in vmbus_onoffer_rescind() 2021-03-04 11:37:46 +01:00
hwmon hwmon: (dell-smm) Add XPS 15 L502X to fan control blacklist 2021-02-26 10:13:00 +01:00
hwspinlock
hwtracing coresight: etm4x: Handle accesses to TRCSTALLCTLR 2021-03-04 11:38:37 +01:00
i2c i2c: rcar: optimize cacheline to minimize HW race condition 2021-03-17 17:06:22 +01:00
i3c
ide ide/falconide: Fix module unload 2021-03-04 11:38:21 +01:00
idle
iio iio: hid-sensor-temperature: Fix issues of timestamp channel 2021-03-25 09:04:16 +01:00
infiniband RDMA/cxgb4: Fix adapter LE hash errors while destroying ipv6 listening server 2021-03-30 14:32:04 +02:00
input Input: applespi - don't wait for responses to commands indefinitely. 2021-03-17 17:06:24 +01:00
interconnect
iommu iommu/amd: Fix performance counter initialization 2021-03-17 17:06:24 +01:00
ipack
irqchip irqchip/ingenic: Add support for the JZ4760 2021-03-30 14:31:50 +02:00
isdn mISDN: fix crash in fritzpci 2021-04-10 13:36:08 +02:00
leds leds: trigger: fix potential deadlock with libata 2021-02-03 23:28:41 +01:00
lightnvm
macintosh macintosh/adb-iop: Use big-endian autopoll mask 2021-03-04 11:37:42 +01:00
mailbox mailbox: sprd: correct definition of SPRD_OUTBOX_FIFO_FULL 2021-03-04 11:38:15 +01:00
mcb
md dm table: Fix zoned model check and zone sectors check 2021-03-30 14:32:06 +02:00
media media: rc: compile rc-cec.c into rc-core 2021-03-17 17:06:20 +01:00
memory memory: ti-aemif: Drop child node when jumping out loop 2021-03-04 11:37:25 +01:00
memstick
message
mfd mfd: gateworks-gsc: Fix interrupt type 2021-03-04 11:38:40 +01:00
misc habanalabs: Call put_pid() when releasing control device 2021-03-30 14:31:50 +02:00
mmc mmc: cqhci: Fix random crash when remove mmc module/card 2021-03-17 17:06:28 +01:00
most
mtd mtd: spi-nor: hisi-sfc: Put child node np on error path 2021-03-04 11:38:37 +01:00
mux
net net: ipa: fix init header command validation 2021-04-10 13:36:08 +02:00
nfc
ntb
nubus
nvdimm libnvdimm/dimm: Avoid race between probe and available_slots_show() 2021-02-10 09:29:17 +01:00
nvme nvmet-tcp: fix kmap leak when data digest in use 2021-04-07 15:00:06 +02:00
nvmem nvmem: qcom-spmi-sdam: Fix uninitialized pdev pointer 2021-03-04 11:38:39 +01:00
of of: unittest: Fix build on architectures without CONFIG_OF_ADDRESS 2021-03-09 11:11:15 +01:00
opp opp: Correct debug message in _opp_add_static_v2() 2021-03-04 11:37:27 +01:00
oprofile
parisc
parport
pci PCI: rpadlpar: Fix potential drc_name corruption in store functions 2021-03-25 09:04:16 +01:00
pcmcia
perf perf/arm-cmn: Move IRQs when migrating context 2021-03-04 11:37:44 +01:00
phy phy: lantiq: rcu-usb2: wait after clock enable 2021-03-04 11:38:24 +01:00
pinctrl pinctrl: rockchip: fix restore error in resume 2021-04-07 15:00:11 +02:00
platform platform/x86: thinkpad_acpi: Allow the FnLock LED to change state 2021-04-10 13:36:09 +02:00
pnp
power power: supply: smb347-charger: Fix interrupt usage if interrupt is unavailable 2021-03-04 11:37:59 +01:00
powercap
pps
ps3
ptp
pwm pwm: iqs620a: Fix overflow and optimize calculations 2021-03-04 11:38:17 +01:00
rapidio
ras
regulator regulator: qcom-rpmh: Correct the pmic5_hfsmps515 buck 2021-03-30 14:31:51 +02:00
remoteproc remoteproc/mediatek: Fix kernel test robot warning 2021-03-07 12:34:15 +01:00
reset
rpmsg
rtc rtc: zynqmp: depend on HAS_IOMEM 2021-03-04 11:38:03 +01:00
s390 s390/qeth: schedule TX NAPI on QAOB completion 2021-03-25 09:04:13 +01:00
sbus
scsi scsi: qla2xxx: Fix broken #endif placement 2021-04-07 15:00:05 +02:00
sfi
sh
siox
slimbus
soc soc: qcom-geni-se: Cleanup the code to remove proxy votes 2021-04-07 15:00:13 +02:00
soundwire soundwire: intel: fix possible crash when no device is detected 2021-03-04 11:38:22 +01:00
spi spi: cadence: set cqspi to the driver_data field of struct device 2021-03-25 09:04:04 +01:00
spmi spmi: spmi-pmic-arb: Fix hw_irq overflow 2021-03-04 11:38:40 +01:00
ssb
staging staging: rtl8192e: Change state information from u16 to u8 2021-04-07 15:00:13 +02:00
target scsi: target: core: Prevent underflow for service actions 2021-03-17 17:06:26 +01:00
tc
tee optee: simplify i2c access 2021-03-04 11:37:28 +01:00
thermal thermal/core: Add NULL pointer check before using cooling device stats 2021-04-07 15:00:06 +02:00
thunderbolt thunderbolt: Increase runtime PM reference count on DP tunnel discovery 2021-03-25 09:04:15 +01:00
tty soc: qcom-geni-se: Cleanup the code to remove proxy votes 2021-04-07 15:00:13 +02:00
uio
usb usb: dwc3: gadget: Clear DEP flags after stop transfers in ep disable 2021-04-07 15:00:13 +02:00
vdpa vdpa/mlx5: fix param validation in mlx5_vdpa_get_config() 2021-03-04 11:37:17 +01:00
vfio vfio/nvlink: Add missing SPAPR_TCE_IOMMU depends 2021-04-07 15:00:11 +02:00
vhost vhost: Fix vhost_vq_reset() 2021-04-07 15:00:05 +02:00
video drivers: video: fbcon: fix NULL dereference in fbcon_cursor() 2021-04-07 15:00:13 +02:00
virt virt: vbox: Do not use wait_event_interruptible when called from kernel context 2021-03-04 11:37:18 +01:00
virtio
visorbus
vlynq
vme
w1 w1: w1_therm: Fix conversion result for negative temperatures 2021-03-04 11:37:18 +01:00
watchdog watchdog: mei_wdt: request stop on unregister 2021-03-04 11:38:36 +01:00
xen xen/x86: make XEN_BALLOON_MEMORY_HOTPLUG_LIMIT depend on MEMORY_HOTPLUG 2021-03-30 14:32:04 +02:00
zorro
Kconfig
Makefile