1 files changed, 31 insertions, 0 deletions
diff --git a/zephyr/projects/skyrim/src/skyrim/alt_charger.c b/zephyr/projects/skyrim/src/skyrim/alt_charger.c
new file mode 100644
index 0000000000..4b717901cd
--- /dev/null
+++ b/zephyr/projects/skyrim/src/skyrim/alt_charger.c
@@ -0,0 +1,31 @@
+/* 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 <zephyr/devicetree.h>
+#include <zephyr/logging/log.h>
+
+#include "charger_chips.h"
+#include "common.h"
+#include "cros_board_info.h"
+#include "cros_cbi.h"
+#include "hooks.h"
+
+LOG_MODULE_DECLARE(skyrim, CONFIG_SKYRIM_LOG_LEVEL);
+
+static void alt_charger_init(void)
+{
+	int ret;
+	uint32_t val;
+
+	ret = cros_cbi_get_fw_config(FW_CHARGER, &val);
+	if (ret != 0) {
+		LOG_ERR("Error retrieving CBI FW_CONFIG field %d", FW_CHARGER);
+		return;
+	}
+
+	if (val == FW_CHARGER_ISL9538)
+		CHG_ENABLE_ALTERNATE(0);
+}
+DECLARE_HOOK(HOOK_INIT, alt_charger_init, HOOK_PRIO_POST_FIRST);