Create stub files for charge_state_v2.c

Remove copied code from V1 implementation, reduce to bare minimum needed to
satisfy external dependencies.

Don't actually enable it for any platforms, though.

BRANCH=ToT
BUG=chrome-os-partner:23776
TEST=make buildall -j

It's used by anything and doesn't do anything if it was, but test
compilation of the changed sources by defining CONFIG_CHARGER_V2.

Change-Id: Iea37d0b4fc48c8ebf7f7088cd1674d6e275d03d4
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/190853
Reviewed-by: Randall Spangler <rspangler@chromium.org>

1 files changed, 79 insertions, 0 deletions

diff --git a/include/charge_state.h b/include/charge_state.h
index 8c0f73952c..581acfd285 100644
--- a/include/charge_state.h
+++ b/include/charge_state.h
@@ -8,6 +8,85 @@
 #include "common.h"
 
 /* Stuff that's common to all charger implementations can go here. */
+/* Power states */
+enum charge_state {
+	/* Meta-state; unchanged from previous time through task loop */
+	PWR_STATE_UNCHANGE = 0,
+	/* Initializing charge state machine at boot */
+	PWR_STATE_INIT,
+	/* Re-initializing charge state machine */
+	PWR_STATE_REINIT,
+	/* Just transitioned from init to idle */
+	PWR_STATE_IDLE0,
+	/* Idle; AC present */
+	PWR_STATE_IDLE,
+	/* Discharging */
+	PWR_STATE_DISCHARGE,
+	/* Charging */
+	PWR_STATE_CHARGE,
+	/* Charging, almost fully charged */
+	PWR_STATE_CHARGE_NEAR_FULL,
+	/* Charging state machine error */
+	PWR_STATE_ERROR
+};
+
+/* Charge state flags */
+/* Forcing idle state */
+#define CHARGE_FLAG_FORCE_IDLE (1 << 0)
+/* External (AC) power is present */
+#define CHARGE_FLAG_EXTERNAL_POWER (1 << 1)
+
+/* Debugging constants, in the same order as enum charge_state. This string
+ * table was moved here to sync with enum above.
+ */
+#define CHARGE_STATE_NAME_TABLE { \
+		"unchange",	\
+		"init",		\
+		"reinit",	\
+		"idle0",	\
+		"idle",		\
+		"discharge",	\
+		"charge",	\
+		"charge_near_full",      \
+		"error"		\
+	}
+	/* End of CHARGE_STATE_NAME_TABLE macro */
+
+
+/**
+ * Return current charge state.
+ */
+enum charge_state charge_get_state(void);
+
+/**
+ * Return non-zero if battery is so low we want to keep AP off.
+ */
+int charge_keep_power_off(void);
+
+/**
+ * Return current charge state flags (CHARGE_FLAG_*)
+ */
+uint32_t charge_get_flags(void);
+
+/**
+ * Return current battery charge percentage.
+ */
+int charge_get_percent(void);
+
+/**
+ * Return non-zero if discharging and battery so low we should shut down.
+ */
+int charge_want_shutdown(void);
+
+/**
+ * Get the last polled battery/charger temperature.
+ *
+ * @param idx		Sensor index to read.
+ * @param temp_ptr	Destination for temperature in K.
+ *
+ * @return EC_SUCCESS if successful, non-zero if error.
+ */
+int charge_temp_sensor_get_val(int idx, int *temp_ptr);
 
 
 /* Pick the right implementation */