1 files changed, 65 insertions, 0 deletions
diff --git a/board/gaelin/fw_config.c b/board/gaelin/fw_config.c
new file mode 100644
index 0000000000..3ee71e6a0f
--- /dev/null
+++ b/board/gaelin/fw_config.c
@@ -0,0 +1,65 @@
+/* Copyright 2022 The ChromiumOS Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "cbi.h"
+#include "common.h"
+#include "compile_time_macros.h"
+#include "console.h"
+#include "cros_board_info.h"
+#include "fw_config.h"
+
+#define CPRINTS(format, args...) cprints(CC_SYSTEM, format, ##args)
+
+static union brask_cbi_fw_config fw_config;
+BUILD_ASSERT(sizeof(fw_config) == sizeof(uint32_t));
+
+/*
+ * FW_CONFIG defaults for brask if the CBI.FW_CONFIG data is not
+ * initialized.
+ */
+static const union brask_cbi_fw_config fw_config_defaults = {
+	.audio = DB_NAU88L25B_I2S,
+	.bj_power = BJ_135W,
+};
+
+/*
+ * Barrel-jack power adapter ratings.
+ */
+static const struct {
+	int voltage;
+	int current;
+} bj_power[] = {
+	[BJ_135W] = { /* 0 - 135W (also default) */
+			.voltage = 19500,
+			.current = 6920
+	},
+	[BJ_230W] = { /* 1 - 230W */
+			.voltage = 19500,
+			.current = 11800
+	}
+};
+
+/****************************************************************************
+ * Brask FW_CONFIG access
+ */
+void board_init_fw_config(void)
+{
+	if (cbi_get_fw_config(&fw_config.raw_value)) {
+		CPRINTS("CBI: Read FW_CONFIG failed, using board defaults");
+		fw_config = fw_config_defaults;
+	}
+}
+
+void ec_bj_power(uint32_t *voltage, uint32_t *current)
+{
+	unsigned int bj;
+
+	bj = fw_config.bj_power;
+	/* Out of range value defaults to 0 */
+	if (bj >= ARRAY_SIZE(bj_power))
+		bj = 0;
+	*voltage = bj_power[bj].voltage;
+	*current = bj_power[bj].current;
+}