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Message-ID: <cover.1721258854.git.soyer@irl.hu>
Date: Thu, 18 Jul 2024 09:27:12 +0200
From: Gergo Koteles <soyer@....hu>
To: Hans de Goede <hdegoede@...hat.com>,
Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
Ike Panhc <ike.pan@...onical.com>
Cc: platform-driver-x86@...r.kernel.org,
linux-kernel@...r.kernel.org, Gergo Koteles <soyer@....hu>
Subject: [PATCH v2 0/4] platform/x86: ideapad-laptop: synchronize VPC commands
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 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/cover.1720515666.git.soyer@irl.hu/
---
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(-)
--
2.45.2
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