[PATCH v2 4/4] platform/chrome: cros_ec_lpc: add quirks for the Framework Laptop (AMD)

["Dustin L. Howett" <dustin@howett.net>]

The original Framework Laptop 13 platform (Intel 11th, 12th, and 13th
Generation at this time) uses a Microchip embedded controller in a
standard configuration.

The newer devices in this product line--Framework Laptop 13 and 16 (AMD
Ryzen)--use a NPCX embedded controller. However, they deviate from the
configuration of ChromeOS platforms built with the NPCX EC.

* ACPI device _SB.PCI0.LPC0.EC0 only indicates I/O ports [0x800, 0x8FE]
  as being used, rather than the expected [0x800, 0x8FF].
  *However*, the embedded controller does make use of all 0x100 ports.
* The MMIO region for EC memory begins at port 0xE00 rather than the
  expected 0x900.

cros_ec_lpc's quirks system is used to address both of these issues.

Signed-off-by: Dustin L. Howett <dustin@howett.net>
---
 drivers/platform/chrome/cros_ec_lpc.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c
index a65c9a8bca5e..9373c39c3ed9 100644
--- a/drivers/platform/chrome/cros_ec_lpc.c
+++ b/drivers/platform/chrome/cros_ec_lpc.c
@@ -538,6 +538,13 @@ static const struct acpi_device_id cros_ec_lpc_acpi_device_ids[] = {
 };
 MODULE_DEVICE_TABLE(acpi, cros_ec_lpc_acpi_device_ids);
 
+static const struct lpc_driver_data framework_laptop_amd_lpc_driver_data __initconst = {
+	.quirks =
+		CROS_EC_LPC_QUIRK_REMAP_MEMORY |
+		CROS_EC_LPC_QUIRK_SHORT_HOSTCMD_RESERVATION,
+	.quirk_mmio_memory_base = 0xE00,
+};
+
 static const struct dmi_system_id cros_ec_lpc_dmi_table[] __initconst = {
 	{
 		/*
@@ -592,7 +599,16 @@ static const struct dmi_system_id cros_ec_lpc_dmi_table[] __initconst = {
 	},
 	/* A small number of non-Chromebook/box machines also use the ChromeOS EC */
 	{
-		/* the Framework Laptop */
+		/* the Framework Laptop 13 (AMD Ryzen) and 16 (AMD Ryzen) */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Framework"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "AMD Ryzen"),
+			DMI_MATCH(DMI_PRODUCT_FAMILY, "Laptop"),
+		},
+		.driver_data = (void *)&framework_laptop_amd_lpc_driver_data,
+	},
+	{
+		/* the Framework Laptop (Intel 11th, 12th, 13th Generation) */
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Framework"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "Laptop"),
-- 
2.42.0