mb/google/brya/crota: Remove MAC address passthru support

ChromeOS connection manager (shill) already
has support for dock MAC address passthrough, therefore remove the
code to pass a dock's MAC address in ACPI.

BUG=b:235045188
TEST=build coreboot

Signed-off-by: Franklin Lin <franklin_lin@wistron.corp-partner.google.com>
Change-Id: I78320a7c6b0fd5392e24b63bff234229a3f4b9bc
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66040
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 0 insertions, 53 deletions

diff --git a/src/mainboard/google/brya/variants/crota/variant.c b/src/mainboard/google/brya/variants/crota/variant.c
index cb4935b1df..4e8b36c317 100644
--- a/src/mainboard/google/brya/variants/crota/variant.c
+++ b/src/mainboard/google/brya/variants/crota/variant.c
@@ -14,13 +14,6 @@ const char *get_wifi_sar_cbfs_filename(void)
 	return "wifi_sar_0.hex";
 }
 
-static const char *get_dock_mac_from_vpd(char *buf, int size)
-{
-	/* Support MAC address pass-through */
-	/* Read value of 'dock_mac' from RO VPD */
-	return vpd_gets("dock_mac", buf, size, VPD_RO);
-}
-
 void variant_update_soc_chip_config(struct soc_intel_alderlake_config *config)
 {
 	if (fw_config_probe(FW_CONFIG(DB_LTE, LTE_USB))) {
@@ -37,49 +30,3 @@ void variant_update_soc_chip_config(struct soc_intel_alderlake_config *config)
 		config->ext_fivr_settings.vnn_sx_voltage_mv = 1250;
 	}
 }
-
-void variant_fill_ssdt(const struct device *unused)
-{
-	/* Write MAC address to SSDT for Linux kernel r8152 driver */
-	/* enable pass-through support */
-	/* and read ACPI object name: "\_SB.AMAC" */
-
-	/* ASL code like this */
-	//     Scope (\_SB)
-	// {
-	//     Method (AMAC, 0, Serialized)
-	//     {
-	//         Return (ToBuffer (STRING))
-	//     }
-	// }
-
-	char buf[32], acpi_buf[32];
-	if (get_dock_mac_from_vpd(buf, sizeof(buf)) != NULL) {
-		printk(BIOS_INFO, "RO_VPD, dock_mac=%s\n", buf);
-
-		/* remove ':' from mac address string */
-		size_t len = strlen(buf);
-		int i, j;
-		for (i = 0; i < len; i++) {
-			if (buf[i] == ':') {
-				for (j = i; j < len; j++)
-					buf[j] = buf[j+1];
-				len--;
-				i--;
-			}
-		}
-		buf[len] = '\0';
-
-		/* Format expected by the Linux kernel r8152 driver */
-		/* "_AUXMAC_#XXXXXXXXXXXX#" */
-		int acpi_buf_len = snprintf(acpi_buf, sizeof(acpi_buf), "_AUXMAC_#%s#", buf);
-
-		acpigen_write_scope("\\_SB");
-		acpigen_write_method_serialized("AMAC", 0);
-
-		acpigen_write_return_byte_buffer((uint8_t *)acpi_buf, acpi_buf_len);
-
-		acpigen_write_method_end();
-		acpigen_write_scope_end();
-	}
-}