linux-kernel - [PATCH v2 5/5] platform/chrome: cros_ec_lpc: Add quirks for Framework Laptop

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Date: Mon,  3 Jun 2024 07:38:34 +0100
From: Ben Walsh <ben@...nut.com>
To: Benson Leung <bleung@...omium.org>,
	Tzung-Bi Shih <tzungbi@...nel.org>,
	Guenter Roeck <groeck@...omium.org>,
	"Dustin L. Howett" <dustin@...ett.net>,
	Kieran Levin <ktl@...me.work>,
	Thomas Weißschuh <linux@...ssschuh.net>,
	Mario Limonciello <mario.limonciello@....com>,
	chrome-platform@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Cc: Ben Walsh <ben@...nut.com>
Subject: [PATCH v2 5/5] platform/chrome: cros_ec_lpc: Add quirks for Framework Laptop

For Framework Laptops with Microchip EC (MEC), use the ACPI id
"PNP0C09" to find the ACPI device, and AML mutex "ECMT" to protect EC
memory access.

Signed-off-by: Ben Walsh <ben@...nut.com>
---
 drivers/platform/chrome/cros_ec_lpc.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c
index 60627c5a596b..bebf76404512 100644
--- a/drivers/platform/chrome/cros_ec_lpc.c
+++ b/drivers/platform/chrome/cros_ec_lpc.c
@@ -634,6 +634,12 @@ static const struct lpc_driver_data framework_laptop_amd_lpc_driver_data __initc
 	.quirk_mmio_memory_base = 0xE00,
 };
 
+static const struct lpc_driver_data framework_laptop_11_lpc_driver_data __initconst = {
+	.quirks = CROS_EC_LPC_QUIRK_ACPI_ID|CROS_EC_LPC_QUIRK_AML_MUTEX,
+	.quirk_acpi_id = "PNP0C09",
+	.quirk_aml_mutex_name = "ECMT",
+};
+
 static const struct dmi_system_id cros_ec_lpc_dmi_table[] __initconst = {
 	{
 		/*
@@ -702,6 +708,7 @@ static const struct dmi_system_id cros_ec_lpc_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Framework"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "Laptop"),
 		},
+		.driver_data = (void *)&framework_laptop_11_lpc_driver_data,
 	},
 	{ /* sentinel */ }
 };
-- 
2.45.1