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From: Hans de Goede <hdegoede@redhat.com>
To: "Rafael J . Wysocki" <rafael@kernel.org>,
	Mark Gross <markgross@kernel.org>,
	Andy Shevchenko <andy@kernel.org>
Cc: Hans de Goede <hdegoede@redhat.com>,
	linux-acpi@vger.kernel.org, platform-driver-x86@vger.kernel.org
Subject: [PATCH 1/2] ACPI: x86: Add skip i2c clients quirk for Medion Lifetab S10346
Date: Thu,  8 Dec 2022 12:02:02 +0100	[thread overview]
Message-ID: <20221208110202.107326-1-hdegoede@redhat.com> (raw)

The Medion Lifetab S10346 is a x86 tablet which ships with Android x86 as
factory OS. The Android x86 kernel fork ignores I2C devices described in
the DSDT, except for the PMIC and Audio codecs.

As usual the Medion Lifetab S10346's DSDT contains a bunch of extra I2C
devices which are not actually there, causing various resource conflicts.
Add an ACPI_QUIRK_SKIP_I2C_CLIENTS quirk for the Medion Lifetab S10346 to
the acpi_quirk_skip_dmi_ids table to woraround this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/acpi/x86/utils.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c
index 635de40b5822..4e816bb402f6 100644
--- a/drivers/acpi/x86/utils.c
+++ b/drivers/acpi/x86/utils.c
@@ -329,6 +329,17 @@ static const struct dmi_system_id acpi_quirk_skip_dmi_ids[] = {
 		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
 					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
 	},
+	{
+		/* Medion Lifetab S10346 */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+			DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
+			/* Way too generic, also match on BIOS data */
+			DMI_MATCH(DMI_BIOS_DATE, "10/22/2015"),
+		},
+		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
+					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
+	},
 	{
 		/* Nextbook Ares 8 */
 		.matches = {
-- 
2.38.1


             reply	other threads:[~2022-12-08 11:07 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-08 11:02 Hans de Goede [this message]
2022-12-08 13:00 ` [PATCH 1/2] ACPI: x86: Add skip i2c clients quirk for Medion Lifetab S10346 Andy Shevchenko
2022-12-08 13:05   ` Andy Shevchenko
2022-12-08 14:58   ` Hans de Goede
2022-12-08 15:09     ` Rafael J. Wysocki

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