1 files changed, 86 insertions, 0 deletions
diff --git a/board/magolor/battery.c b/board/magolor/battery.c
new file mode 100644
index 0000000000..7f82bcb95f
--- /dev/null
+++ b/board/magolor/battery.c
@@ -0,0 +1,86 @@
+/* Copyright 2020 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 information
+ */
+
+#include "battery.h"
+#include "battery_smart.h"
+#include "common.h"
+#include "ec_commands.h"
+#include "extpower.h"
+
+/* Shutdown mode parameter to write to manufacturer access register */
+#define SB_SHUTDOWN_DATA	0x0010
+
+/* Battery info */
+static const struct battery_info info = {
+	.voltage_max		= 8880,
+	.voltage_normal		= 7700,
+	.voltage_min		= 6000,
+	.precharge_current	= 160,
+	.start_charging_min_c	= 0,
+	.start_charging_max_c	= 45,
+	.charging_min_c		= 0,
+	.charging_max_c		= 45,
+	.discharging_min_c	= -20,
+	.discharging_max_c	= 60,
+};
+
+const struct battery_info *battery_get_info(void)
+{
+	return &info;
+}
+
+int board_cut_off_battery(void)
+{
+	int rv;
+
+	/* Ship mode command must be sent twice to take effect */
+	rv = sb_write(SB_MANUFACTURER_ACCESS, SB_SHUTDOWN_DATA);
+	if (rv != EC_SUCCESS)
+		return EC_RES_ERROR;
+
+	rv = sb_write(SB_MANUFACTURER_ACCESS, SB_SHUTDOWN_DATA);
+	return rv ? EC_RES_ERROR : EC_RES_SUCCESS;
+}
+
+enum battery_disconnect_state battery_get_disconnect_state(void)
+{
+	uint8_t data[6];
+	int rv;
+
+	/*
+	 * Take note if we find that the battery isn't in disconnect state,
+	 * and always return NOT_DISCONNECTED without probing the battery.
+	 * This assumes the battery will not go to disconnect state during
+	 * runtime.
+	 */
+	static int not_disconnected;
+
+	if (not_disconnected)
+		return BATTERY_NOT_DISCONNECTED;
+
+	/* Check if battery discharge FET is disabled. */
+	rv = sb_read_mfgacc(PARAM_OPERATION_STATUS,
+			    SB_ALT_MANUFACTURER_ACCESS, data, sizeof(data));
+	if (rv)
+		return BATTERY_DISCONNECT_ERROR;
+	if (~data[3] & (BATTERY_DISCHARGING_DISABLED)) {
+		not_disconnected = 1;
+		return BATTERY_NOT_DISCONNECTED;
+	}
+
+	/*
+	 * Battery discharge FET is disabled.  Verify that we didn't enter this
+	 * state due to a safety fault.
+	 */
+	rv = sb_read_mfgacc(PARAM_SAFETY_STATUS,
+			    SB_ALT_MANUFACTURER_ACCESS, data, sizeof(data));
+	if (rv || data[2] || data[3] || data[4] || data[5])
+		return BATTERY_DISCONNECT_ERROR;
+
+	/* No safety fault, battery is disconnected */
+	return BATTERY_DISCONNECTED;
+}