linux-kernel - [PATCH 0/2] Fixes for spurious wakeups on some Lenovo laptops

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Message-ID: <20231203032431.30277-1-mario.limonciello@amd.com>
Date:   Sat, 2 Dec 2023 21:24:29 -0600
From:   Mario Limonciello <mario.limonciello@....com>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>
CC:     "open list:PIN CONTROL SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        Basavaraj Natikar <Basavaraj.Natikar@....com>,
        "open list:HID CORE LAYER" <linux-input@...r.kernel.org>,
        Mario Limonciello <mario.limonciello@....com>
Subject: [PATCH 0/2] Fixes for spurious wakeups on some Lenovo laptops

Users have reported the inability to properly suspend on
Lenovo Yoga Slim 7 Gen 8 14APU8 and Lenovo YogaAir 14s APU8

Analyzing the problem there are two issues where HID devices connected
over I2C cause spurious wakeup events or high power consumption.

One of the HID devices isn't configured as a wakeup source so the APU
if the interrupt fires over suspend it will wake the APU from a hardware
sleep state but will not return control to the OS.

The second HID device is configured as a wakeup source and continually
fires both at runtime and suspend.

This series mitigates the impact from both of these devices.

Mario Limonciello (2):
  HID: i2c-hid: Add IDEA5002 to i2c_hid_acpi_blacklist[]
  pinctrl: amd: Mask non-wake source pins with interrupt enabled at
    suspend

 drivers/hid/i2c-hid/i2c-hid-acpi.c | 5 +++++
 drivers/pinctrl/pinctrl-amd.c      | 9 +++++++++
 drivers/pinctrl/pinctrl-amd.h      | 5 +++++
 3 files changed, 19 insertions(+)

-- 
2.34.1