baseboard/kukui: support battery/charger variants

This CL introduces config option VARIANT_KUKUI_BATTERY_* and
VARIANT_KUKUI_CHARGER_* for derivatives to pick their battery / charger
option.

BUG=b:137172860
TEST=build and deploy on Krane, verify that `battery` and `charger`
     console output looks reasonable.
BRANCH=master

Change-Id: Ic5c33a233ec30c9bc71414c95603157301281041
Signed-off-by: Ting Shen <phoenixshen@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1697781
Reviewed-by: Alexandru M Stan <amstan@chromium.org>
Commit-Queue: Ting Shen <phoenixshen@chromium.org>
Tested-by: Ting Shen <phoenixshen@chromium.org>

1 files changed, 172 insertions, 0 deletions

diff --git a/baseboard/kukui/battery_max17055.c b/baseboard/kukui/battery_max17055.c
new file mode 100644
index 0000000000..f1bdfdcbe1
--- /dev/null
+++ b/baseboard/kukui/battery_max17055.c
@@ -0,0 +1,172 @@
+/* Copyright 2018 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 "charge_state.h"
+#include "charger_mt6370.h"
+#include "console.h"
+#include "driver/battery/max17055.h"
+#include "ec_commands.h"
+#include "util.h"
+
+#define TEMP_OUT_OF_RANGE TEMP_ZONE_COUNT
+
+#define BATT_ID 0
+
+#define BATTERY_SIMPLO_CHARGE_MIN_TEMP 0
+#define BATTERY_SIMPLO_CHARGE_MAX_TEMP 60
+
+#define CPRINTS(format, args...) cprints(CC_CHARGER, format, ## args)
+
+enum battery_type {
+	BATTERY_SIMPLO = 0,
+	BATTERY_COUNT
+};
+
+static const struct battery_info info[] = {
+	[BATTERY_SIMPLO] = {
+		.voltage_max		= 4400,
+		.voltage_normal		= 3860,
+		.voltage_min		= 3000,
+		.precharge_current	= 256,
+		.start_charging_min_c	= 0,
+		.start_charging_max_c	= 45,
+		.charging_min_c		= 0,
+		.charging_max_c		= 60,
+		.discharging_min_c	= -20,
+		.discharging_max_c	= 60,
+	},
+};
+
+static const struct max17055_batt_profile batt_profile[] = {
+	[BATTERY_SIMPLO] = {
+		.is_ez_config		= 1,
+		.design_cap		= MAX17055_DESIGNCAP_REG(6910),
+		.ichg_term		= MAX17055_ICHGTERM_REG(235),
+		.v_empty_detect		= MAX17055_VEMPTY_REG(3000, 3600),
+	},
+};
+
+static const struct max17055_alert_profile alert_profile[] = {
+	[BATTERY_SIMPLO] = {
+		.v_alert_mxmn = VALRT_DISABLE,
+		.t_alert_mxmn = MAX17055_TALRTTH_REG(
+			BATTERY_SIMPLO_CHARGE_MAX_TEMP,
+			BATTERY_SIMPLO_CHARGE_MIN_TEMP),
+		.s_alert_mxmn = SALRT_DISABLE,
+		.i_alert_mxmn = IALRT_DISABLE,
+	},
+};
+
+const struct max17055_batt_profile *max17055_get_batt_profile(void)
+{
+	return &batt_profile[BATT_ID];
+}
+
+const struct max17055_alert_profile *max17055_get_alert_profile(void)
+{
+	return &alert_profile[BATT_ID];
+}
+
+const struct battery_info *battery_get_info(void)
+{
+	return &info[BATT_ID];
+}
+
+enum battery_disconnect_state battery_get_disconnect_state(void)
+{
+	if (battery_is_present() == BP_YES)
+		return BATTERY_NOT_DISCONNECTED;
+	return BATTERY_DISCONNECTED;
+}
+
+int charger_profile_override(struct charge_state_data *curr)
+{
+	/* battery temp in 0.1 deg C */
+	int bat_temp_c = curr->batt.temperature - 2731;
+
+	/*
+	 * Keep track of battery temperature range:
+	 *
+	 *        ZONE_0   ZONE_1     ZONE_2
+	 * -----+--------+--------+------------+----- Temperature (C)
+	 *      t0       t1       t2           t3
+	 */
+	enum {
+		TEMP_ZONE_0, /* t0 < bat_temp_c <= t1 */
+		TEMP_ZONE_1, /* t1 < bat_temp_c <= t2 */
+		TEMP_ZONE_2, /* t2 < bat_temp_c <= t3 */
+		TEMP_ZONE_COUNT
+	} temp_zone;
+
+	static struct {
+		int temp_min; /* 0.1 deg C */
+		int temp_max; /* 0.1 deg C */
+		int desired_current; /* mA */
+		int desired_voltage; /* mV */
+	} temp_zones[BATTERY_COUNT][TEMP_ZONE_COUNT] = {
+		[BATTERY_SIMPLO] = {
+			/* TEMP_ZONE_0 */
+			{BATTERY_SIMPLO_CHARGE_MIN_TEMP * 10, 150, 1772, 4376},
+			/* TEMP_ZONE_1 */
+			{150, 450, 4020, 4376},
+			/* TEMP_ZONE_2 */
+			{450, BATTERY_SIMPLO_CHARGE_MAX_TEMP * 10, 3350, 4300},
+		},
+	};
+	BUILD_ASSERT(ARRAY_SIZE(temp_zones[0]) == TEMP_ZONE_COUNT);
+	BUILD_ASSERT(ARRAY_SIZE(temp_zones) == BATTERY_COUNT);
+
+	if ((curr->batt.flags & BATT_FLAG_BAD_TEMPERATURE) ||
+	    (bat_temp_c < temp_zones[BATT_ID][0].temp_min) ||
+	    (bat_temp_c >= temp_zones[BATT_ID][TEMP_ZONE_COUNT - 1].temp_max))
+		temp_zone = TEMP_OUT_OF_RANGE;
+	else {
+		for (temp_zone = 0; temp_zone < TEMP_ZONE_COUNT; temp_zone++) {
+			if (bat_temp_c <
+				temp_zones[BATT_ID][temp_zone].temp_max)
+				break;
+		}
+	}
+
+	if (curr->state != ST_CHARGE)
+		return 0;
+
+	switch (temp_zone) {
+	case TEMP_ZONE_0:
+	case TEMP_ZONE_1:
+	case TEMP_ZONE_2:
+		curr->requested_current =
+			temp_zones[BATT_ID][temp_zone].desired_current;
+		curr->requested_voltage =
+			temp_zones[BATT_ID][temp_zone].desired_voltage;
+		break;
+	case TEMP_OUT_OF_RANGE:
+		curr->requested_current = curr->requested_voltage = 0;
+		curr->batt.flags &= ~BATT_FLAG_WANT_CHARGE;
+		curr->state = ST_IDLE;
+		break;
+	}
+
+#ifdef VARIANT_KUKUI_CHARGER_MT6370
+	mt6370_charger_profile_override(curr);
+#endif /* CONFIG_CHARGER_MT6370 */
+
+	return 0;
+}
+
+enum ec_status charger_profile_override_get_param(uint32_t param,
+						  uint32_t *value)
+{
+	return EC_RES_INVALID_PARAM;
+}
+
+enum ec_status charger_profile_override_set_param(uint32_t param,
+						  uint32_t value)
+{
+	return EC_RES_INVALID_PARAM;
+}