1 files changed, 95 insertions, 0 deletions
diff --git a/board/amenia/battery.c b/board/amenia/battery.c
new file mode 100644
index 0000000000..a931ff3d91
--- /dev/null
+++ b/board/amenia/battery.c
@@ -0,0 +1,95 @@
+/* Copyright 2016 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.
+ *
+ * Battery pack vendor provided charging profile
+ */
+
+#include "battery.h"
+#include "battery_smart.h"
+#include "charge_state.h"
+#include "console.h"
+#include "ec_commands.h"
+#include "gpio.h"
+#include "i2c.h"
+#include "util.h"
+
+/* Shutdown mode parameter to write to manufacturer access register */
+#define PARAM_CUT_OFF_LOW  0x10
+#define PARAM_CUT_OFF_HIGH 0x00
+
+/* Battery info for BQ40Z55 */
+static const struct battery_info info = {
+	.voltage_max = 8700,        /* mV */
+	.voltage_normal = 7600,
+	.voltage_min = 6100,
+	.precharge_current = 200,   /* mA */
+	.start_charging_min_c = 0,
+	.start_charging_max_c = 45,
+	.charging_min_c = 0,
+	.charging_max_c = 45,
+	.discharging_min_c = 0,
+	.discharging_max_c = 60,
+};
+
+const struct battery_info *battery_get_info(void)
+{
+	static struct battery_info batt_info;
+
+	if (battery_is_present() == BP_YES)
+		return &info;
+
+	/* Use voltage_max for voltage min if battery is not present */
+	batt_info = info;
+	batt_info.voltage_min = batt_info.voltage_max;
+	return &batt_info;
+}
+
+int board_cut_off_battery(void)
+{
+	int rv;
+	uint8_t buf[3];
+
+	/* Ship mode command must be sent twice to take effect */
+	buf[0] = SB_MANUFACTURER_ACCESS & 0xff;
+	buf[1] = PARAM_CUT_OFF_LOW;
+	buf[2] = PARAM_CUT_OFF_HIGH;
+
+	i2c_lock(I2C_PORT_BATTERY, 1);
+	rv = i2c_xfer(I2C_PORT_BATTERY, BATTERY_ADDR, buf, 3, NULL, 0,
+		      I2C_XFER_SINGLE);
+	rv |= i2c_xfer(I2C_PORT_BATTERY, BATTERY_ADDR, buf, 3, NULL, 0,
+		       I2C_XFER_SINGLE);
+	i2c_lock(I2C_PORT_BATTERY, 0);
+
+	return rv;
+}
+
+#ifdef CONFIG_BATTERY_PRESENT_CUSTOM
+/*
+ * Physical detection of battery.
+ */
+enum battery_present battery_is_present(void)
+{
+	enum battery_present batt_pres;
+	const struct batt_params *batt = charger_current_battery_params();
+
+	/* The GPIO is low when the battery is physically present */
+	batt_pres = gpio_get_level(GPIO_BAT_PRESENT_L) ? BP_NO : BP_YES;
+
+	/*
+	 * Make sure battery status is implemented, I2C transactions are
+	 * success & the battery status is Initialized to find out if it
+	 * is a working battery and it is not in the cut-off mode.
+	 *
+	 * FETs are turned off after Power Shutdown time.
+	 * The device will wake up when a voltage is applied to PACK.
+	 * Battery status will be inactive until it is initialized.
+	 */
+	if (batt_pres == BP_YES && !(batt->flags & BATT_FLAG_BAD_STATUS))
+		if (!(batt->status & STATUS_INITIALIZED))
+			batt_pres = BP_NO;
+
+	return batt_pres;
+}
+#endif