1 files changed, 107 insertions, 0 deletions
diff --git a/board/draco/battery.c b/board/draco/battery.c
new file mode 100644
index 0000000000..fbada9a9f1
--- /dev/null
+++ b/board/draco/battery.c
@@ -0,0 +1,107 @@
+/* Copyright 2021 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_fuel_gauge.h"
+#include "cbi.h"
+#include "common.h"
+#include "compile_time_macros.h"
+#include "gpio.h"
+/*
+ * Battery info for all Draco battery types. Note that the fields
+ * start_charging_min/max and charging_min/max are not used for the charger.
+ * The effective temperature limits are given by discharging_min/max_c.
+ *
+ * Fuel Gauge (FG) parameters which are used for determining if the battery
+ * is connected, the appropriate ship mode (battery cutoff) command, and the
+ * charge/discharge FETs status.
+ *
+ * Ship mode (battery cutoff) requires 2 writes to the appropriate smart battery
+ * register. For some batteries, the charge/discharge FET bits are set when
+ * charging/discharging is active, in other types, these bits set mean that
+ * charging/discharging is disabled. Therefore, in addition to the mask for
+ * these bits, a disconnect value must be specified. Note that for TI fuel
+ * gauge, the charge/discharge FET status is found in Operation Status (0x54),
+ * but a read of Manufacturer Access (0x00) will return the lower 16 bits of
+ * Operation status which contains the FET status bits.
+ *
+ * The assumption for battery types supported is that the charge/discharge FET
+ * status can be read with a sb_read() command and therefore, only the register
+ * address, mask, and disconnect value need to be provided.
+ */
+const struct board_batt_params board_battery_info[] = {
+	/* DYNAPACK COSMAX Battery Information */
+	[BATTERY_DYNAPACK_COSMX] = {
+		/* RAJ240045 Fuel Gauge */
+		.fuel_gauge = {
+			.manuf_name = "333-2C-4C-A",
+			.ship_mode = {
+				.reg_addr = 0x00,
+				.reg_data = { 0x0010, 0x0010 },
+			},
+			.fet = {
+				.mfgacc_support = 0,
+				.reg_addr = 0x43,
+				.reg_mask = 0x0003,
+				.disconnect_val = 0x0,
+			}
+		},
+		.batt_info = {
+			.voltage_max		= 17600,
+			.voltage_normal		= 15400, /* mV */
+			.voltage_min		= 12000, /* mV */
+			.precharge_current	= 256,	/* mA */
+			.start_charging_min_c	= 0,
+			.start_charging_max_c	= 45,
+			.charging_min_c		= 0,
+			.charging_max_c		= 50,
+			.discharging_min_c	= -10,
+			.discharging_max_c	= 60,
+		},
+	},
+	/* DYNAPACK HIGHPOWER Battery Information */
+	[BATTERY_DYNAPACK_HIGHPOWER] = {
+		/* RAJ240045 Fuel Gauge */
+		.fuel_gauge = {
+			.manuf_name = "333-2D-4C-A",
+			.ship_mode = {
+				.reg_addr = 0x00,
+				.reg_data = { 0x0010, 0x0010 },
+			},
+			.fet = {
+				.mfgacc_support = 0,
+				.reg_addr = 0x43,
+				.reg_mask = 0x0003,
+				.disconnect_val = 0x0,
+			}
+		},
+		.batt_info = {
+			.voltage_max		= 17600,
+			.voltage_normal		= 15400, /* mV */
+			.voltage_min		= 12000, /* mV */
+			.precharge_current	= 256,	/* mA */
+			.start_charging_min_c	= 0,
+			.start_charging_max_c	= 45,
+			.charging_min_c		= 0,
+			.charging_max_c		= 50,
+			.discharging_min_c	= -10,
+			.discharging_max_c	= 60,
+		},
+	},
+};
+BUILD_ASSERT(ARRAY_SIZE(board_battery_info) == BATTERY_TYPE_COUNT);
+
+const enum battery_type DEFAULT_BATTERY_TYPE = BATTERY_DYNAPACK_COSMX;
+
+enum battery_present battery_hw_present(void)
+{
+	enum gpio_signal batt_pres;
+
+	batt_pres = GPIO_EC_BATT_PRES_ODL;
+
+	/* The GPIO is low when the battery is physically present */
+	return gpio_get_level(batt_pres) ? BP_NO : BP_YES;
+}