linux-kernel - [PATCH 6/6] platform/chrome: cros_ec_lpc: Add AML mutex for Framework Laptop

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Date: Wed, 15 May 2024 06:56:31 +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 6/6] platform/chrome: cros_ec_lpc: Add AML mutex for Framework Laptop

For Framework Laptops with Microchip EC (MEC), use the AML mutex
"ECMT" to protect EC memory access.

Signed-off-by: Ben Walsh <ben@...nut.com>
---
 drivers/platform/chrome/cros_ec_lpc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c
index a9200f0a1a37..eebc66a39a23 100644
--- a/drivers/platform/chrome/cros_ec_lpc.c
+++ b/drivers/platform/chrome/cros_ec_lpc.c
@@ -611,6 +611,11 @@ 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_AML_MUTEX,
+	.quirk_aml_mutex_name = "ECMT",
+};
+
 static const struct dmi_system_id cros_ec_lpc_dmi_table[] __initconst = {
 	{
 		/*
@@ -679,6 +684,7 @@ 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 */ }
 };
-- 
2.45.0