according to the above analysis, error is happen with the direction is :
in
i found the function to set the direction of gpio pin to in:
amd_gpio_direction_input,
and add some pr_err and dump_stack() to the function ,
then dmesg out put like :
[ 1.545190] amd_gpio_set_config
gpio_chip->label:AMDI0030:00,offset:130,config:278
[ 1.545191] amd_gpio_direction_input gpio_chip->label:AMDI0030:00,offset:130
=============================amd_gpio_direction_input dump_stack()=====
[ 1.545194] CPU: 12 PID: 264 Comm: kworker/12:4 Not tainted
5.8.13-303.fc33.x86_64 #1
[ 1.545194] Hardware name: LENOVO 82B6/LNVNB161216, BIOS EUCN26WW 08/19/2020
[ 1.545197] Workqueue: events deferred_probe_work_func
[ 1.545198] Call Trace:
[ 1.545203] dump_stack+0x6b/0x88
[ 1.545205] amd_gpio_direction_input+0x57/0x60 [pinctrl_amd]
[ 1.545206] gpiod_direction_input+0x5b/0x170
[ 1.545208] acpi_dev_gpio_irq_get+0x111/0x1b6
[ 1.545209] ? i2c_acpi_find_adapter_by_handle+0x30/0x30
[ 1.545210] i2c_acpi_get_irq+0x81/0x90
[ 1.545212] i2c_device_probe+0x24a/0x280
[ 1.545213] really_probe+0x160/0x400
[ 1.545214] driver_probe_device+0xe1/0x150
[ 1.545215] ? driver_allows_async_probing+0x50/0x50
[ 1.545216] bus_for_each_drv+0x6a/0xa0
[ 1.545217] __device_attach+0xb4/0x1b0
[ 1.545218] bus_probe_device+0x8e/0xa0
[ 1.545219] deferred_probe_work_func+0x77/0xc0
[ 1.545220] process_one_work+0x1b4/0x370
[ 1.545221] worker_thread+0x53/0x3e0
[ 1.545222] ? process_one_work+0x370/0x370
[ 1.545223] kthread+0x11b/0x140
[ 1.545224] ? __kthread_bind_mask+0x60/0x60
[ 1.545226] ret_from_fork+0x22/0x30
============================================================================
then i found the functions
acpi_dev_gpio_irq_get
in in file : drivers/gpio/gpiolib-acpi.c, line 927 (as a function)
and it's comment say:
```
/**
* acpi_dev_gpio_irq_get() - Find GpioInt and translate it to Linux IRQ number
* @adev: pointer to a ACPI device to get IRQ from
* @index: index of GpioInt resource (starting from %0)
*
* If the device has one or more GpioInt resources, this function can be
* used to translate from the GPIO offset in the resource to the Linux IRQ
* number.
*
* The function is idempotent, though each time it runs it will configure GPIO
* pin direction according to the flags in GpioInt resource.
*
* Return: Linux IRQ number (> %0) on success, negative errno on failure.
*/
int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
{
```
each time it runs it will configure GPIO pin direction according to the
flags in GpioInt resource.
in it's body ,by call function gpiod_configure_flags (in
/drivers/gpio/gpiolib.c)
it call the function gpiod_direction_input.
so the direction become to :input or in
the problem may be in two places:
1. lenovo 's default value in bios or dsdt is : input or in,or missing . but on
windows ,it's ok,so ,may be not here.
2. in linux kernel,the default value of the type for gpio pin 's direction ,is
:input or in
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https://bugs.launchpad.net/bugs/1887190
Title:
MSFT Touchpad not working on Lenovo Legion-5 15ARH05
Status in Pop!_OS:
New
Status in linux package in Ubuntu:
Confirmed
Status in xserver-xorg-input-libinput package in Ubuntu:
Confirmed
Status in linux package in Arch Linux:
Fix Committed
Status in linux package in Fedora:
Confirmed
Status in linux package in openSUSE:
New
Bug description:
Hello
The MSFT touchpad of this Lenovo Legion-5 15ARH05 laptop is not reacting at
all (pointer and click never move when touchpad is touched). This has been
reported by other users in various websites, with various linux systems
including other Ubuntu systems, but I saw no launchpad bug so I post one.
Example of websites covering the issue :
- https://askubuntu.com/questions/1253830/lenovo-legion-5-touchpad (exactly
the same laptop)
- https://www.linux.org/threads/lenovo-legion-5-touchpad.29536/ (similar
laptop)
xinput indentifies it as MSFT0001:00 04F3:3140
Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer
(2)]
⎜ ↳ MSFT0001:00 04F3:3140 Touchpad id=17 [slave pointer
(2)]
⎜ ↳ MSFT0001:00 04F3:3140 Mouse id=16 [slave pointer
(2)]
⎜ ↳ ITE Tech. Inc. ITE Device(8910) Consumer Control id=12 [slave
pointer (2)]
⎜ ↳ Logitech USB Optical Mouse id=11 [slave pointer
(2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave
keyboard (3)]
↳ Ideapad extra buttons id=15 [slave
keyboard (3)]
↳ Power Button id=6 [slave
keyboard (3)]
↳ Integrated Camera: Integrated C id=10 [slave
keyboard (3)]
↳ Video Bus id=7 [slave
keyboard (3)]
↳ ITE Tech. Inc. ITE Device(8910) Consumer Control id=19 [slave
keyboard (3)]
↳ Power Button id=9 [slave
keyboard (3)]
↳ ITE Tech. Inc. ITE Device(8910) Wireless Radio Control id=13 [slave
keyboard (3)]
↳ ITE Tech. Inc. ITE Device(8910) Keyboard id=14 [slave
keyboard (3)]
↳ AT Translated Set 2 keyboard id=18 [slave
keyboard (3)]
↳ Video Bus id=8 [slave
keyboard (3)]
Thanks a lot for your time. It does not help, but I can confirm what
was reported on askubuntu by another user : the touchpad does work on
Windows.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-40-generic 5.4.0-40.44
ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
Uname: Linux 5.4.0-40-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: nicolas 1567 F.... pulseaudio
/dev/snd/controlC1: nicolas 1567 F.... pulseaudio
/dev/snd/controlC2: nicolas 1567 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri Jul 10 20:14:25 2020
InstallationDate: Installed on 2020-07-02 (8 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: LENOVO 82B5
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=fr_FR.UTF-8
SHELL=/bin/bash
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-40-generic
root=UUID=d8898017-2821-434e-ab52-fec76ac93106 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.4.0-40-generic N/A
linux-backports-modules-5.4.0-40-generic N/A
linux-firmware 1.187.1
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/12/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: EUCN19WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40709 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo Legion 5 15ARH05
dmi.modalias:
dmi:bvnLENOVO:bvrEUCN19WW:bd05/12/2020:svnLENOVO:pn82B5:pvrLenovoLegion515ARH05:rvnLENOVO:rnLNVNB161216:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrLenovoLegion515ARH05:
dmi.product.family: Legion 5 15ARH05
dmi.product.name: 82B5
dmi.product.sku: LENOVO_MT_82B5_BU_idea_FM_Legion 5 15ARH05
dmi.product.version: Lenovo Legion 5 15ARH05
dmi.sys.vendor: LENOVO
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-07-02 (12 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Package: linux (not installed)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=fr_FR.UTF-8
SHELL=/bin/bash
Tags: focal
Uname: Linux 5.8.0-050800rc5-generic x86_64
UnreportableReason: The running kernel is not an Ubuntu kernel
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
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