linux-kernel - [PATCH v3 6/7] acpi/x86: s2idle: Add a quirk for Lenovo Slim 7 Pro 14ARH7

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Date:   Fri, 16 Sep 2022 13:26:08 -0500
From:   Mario Limonciello <mario.limonciello@....com>
To:     <rafael@...nel.org>, <linux-kernel@...r.kernel.org>
CC:     <travisghansen@...oo.com>, <catalin@...ebit.com>,
        <Shyam-sundar.S-k@....com>,
        Matthew Anderson <ruinairas1992@...il.com>,
        <philipp.zabel@...il.com>, "Sebastian S ." <iam@...entr.al>,
        Hans de Goede <hdegoede@...hat.com>,
        Mario Limonciello <mario.limonciello@....com>,
        "Len Brown" <lenb@...nel.org>, <linux-acpi@...r.kernel.org>
Subject: [PATCH v3 6/7] acpi/x86: s2idle: Add a quirk for Lenovo Slim 7 Pro 14ARH7

Lenovo Slim 7 Pro 14ARH7 has a sporadically non-functional keyboard
when resuming from s2idle.  This is caused by some missing calls to the
EC that don't occur in the AMD codepath but only in the Microsoft codepath.

Add the system to the quirk list to force Microsoft codepath.

Reported-by: Travis Glenn Hansen <travisghansen@...oo.com>
Reported-by: Sebastian S. <iam@...entr.al>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216473
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216438
Signed-off-by: Mario Limonciello <mario.limonciello@....com>
---
v2->v3:
 * Adjust prefix to cover multiple systems
 * Add another Link tag
v1->v2:
 * New patch
---
 drivers/acpi/x86/s2idle.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/acpi/x86/s2idle.c b/drivers/acpi/x86/s2idle.c
index 52f41119f296..9c84eb068e19 100644
--- a/drivers/acpi/x86/s2idle.c
+++ b/drivers/acpi/x86/s2idle.c
@@ -428,6 +428,18 @@ static const struct dmi_system_id s2idle_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "ROG Zephyrus G14 GA402"),
 		},
 	},
+	{
+		/*
+		 * Lenovo Yoga Slim 7 Pro X 14ARH7
+		 * https://bugzilla.kernel.org/show_bug.cgi?id=216438 : 82V2
+		 * https://bugzilla.kernel.org/show_bug.cgi?id=216438 : 82TL
+		 */
+		.callback = lps0_prefer_microsoft,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "82"),
+		},
+	},
 	{}
 };
 
-- 
2.34.1