3 files changed, 53 insertions, 0 deletions
diff --git a/include/config.h b/include/config.h
index 8cd5ffcea4..f0a0f08614 100644
--- a/include/config.h
+++ b/include/config.h
@@ -242,6 +242,9 @@
  */
 #undef CONFIG_EOPTION
 
+/* Compile support for handling turbo-mode chargers */
+#undef CONFIG_EXTPOWER_FALCO
+
 /* Compile support for detecting external power presence via a GPIO */
 #undef CONFIG_EXTPOWER_GPIO
 
diff --git a/include/extpower.h b/include/extpower.h
index 36c5535633..1b51f3fa83 100644
--- a/include/extpower.h
+++ b/include/extpower.h
@@ -27,4 +27,9 @@ int extpower_is_present(void);
  */
 void extpower_interrupt(enum gpio_signal signal);
 
+#ifdef CONFIG_EXTPOWER_FALCO
+/* Adapter-specific logic */
+#include "extpower_falco.h"
+#endif
+
 #endif  /* __CROS_EC_EXTPOWER_H */
diff --git a/include/extpower_falco.h b/include/extpower_falco.h
new file mode 100644
index 0000000000..6731b9f0c6
--- /dev/null
+++ b/include/extpower_falco.h
@@ -0,0 +1,45 @@
+/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* We can do even smarter charging if we can identify the AC adapter */
+
+#ifndef __CROS_EC_EXTPOWER_FALCO_H
+#define __CROS_EC_EXTPOWER_FALCO_H
+
+#include "charge_state.h"
+
+/* Supported adapters */
+enum adapter_type {
+	ADAPTER_UNKNOWN = 0,
+	ADAPTER_45W,
+	ADAPTER_65W,
+	ADAPTER_90W,
+	NUM_ADAPTER_TYPES
+};
+
+/* Adapter identification values */
+struct adapter_id_vals {
+	int lo, hi;
+};
+
+/* Adapter-specific parameters. */
+struct adapter_limits {
+	int hi_val, lo_val;			/* current thresholds (mA) */
+	int hi_cnt, lo_cnt;			/* count needed to trigger */
+	int count;				/* samples past the limit */
+	int triggered;				/* threshold reached */
+};
+
+/* Rate at which adapter samples are collected. */
+#define EXTPOWER_FALCO_POLL_PERIOD  (MSEC * 100)
+
+/* Number of special states */
+#define NUM_AC_TURBO_STATES 2
+#define NUM_AC_THRESHOLDS 2
+
+/* Change turbo mode or throttle the AP depending on the adapter state. */
+void watch_adapter_closely(struct power_state_context *ctx);
+
+#endif  /* __CROS_EC_EXTPOWER_FALCO_H */