[v3,0/4] platform/x86: ideapad-laptop: synchronize VPC commands

Message

Gergo Koteles July 22, 2024, 10:27 a.m. UTC

Hi,

Sometimes the Yoga mode control switch did not work properly on my 
laptop, and sometimes even caused a platform profile switch. It turned 
out that it was caused by a race situation, the lenovo-ymc wmi notify 
handler was running at the same time as the ideapad-laptop acpi notify 
handler, and the partial results of the VPC calls in the two were mixed 
up.

This series introduces a notification chain to receive YMC or other 
events, moves the EC triggering into ideapad-laptop, and then introduces 
a mutex to eliminate the problem.

Best regards,
Gergo Koteles

---
Changes in v3:
- use devm_mutex_init for vpc_mutex
- Link to v2: https://lore.kernel.org/all/[e-mail]/

Changes in v2:
- Skip the already merged "platform/x86: ideapad-laptop: use cleanup.h" commit
- Based on the WMI driver development guide and the dell drivers,
  introduce a generic notification chain
- Use the notification chain to send the YMC event from lenovo-ymc to
  the ideapad-laptop module
- Move the ec_trigger module parameter to the ideapad-laptop as well
- Mutex changes go into one patch
- Link to v1: https://lore.kernel.org/all/[e-mail]/
---


Gergo Koteles (4):
  platform/x86: ideapad-laptop: introduce a generic notification chain
  platform/x86: ideapad-laptop: move ymc_trigger_ec from lenovo-ymc
  platform/x86: ideapad-laptop: move ACPI helpers from header to source
    file
  platform/x86: ideapad-laptop: add a mutex to synchronize VPC commands

 drivers/platform/x86/Kconfig          |   1 +
 drivers/platform/x86/ideapad-laptop.c | 282 ++++++++++++++++++++++++--
 drivers/platform/x86/ideapad-laptop.h | 142 +------------
 drivers/platform/x86/lenovo-ymc.c     |  60 +-----
 4 files changed, 275 insertions(+), 210 deletions(-)