poppy: Add new board

Add support for poppy board with:
    - chip: npcx
    - pmic: bd999992GW
    - charger: isl9238
    - tcpc: 1x anx3429, 1x ps8751
    - bc12: pi3usb9218c

BRANCH=none
BUG=chrome-os-partner:61098
TEST=make BOARD=poppy -j

Change-Id: I3439399b85ba49b4c733536d614118faeeeb0f93
Reviewed-on: https://chromium-review.googlesource.com/422263
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@google.com>

1 files changed, 134 insertions, 0 deletions

diff --git a/board/poppy/battery.c b/board/poppy/battery.c
new file mode 100644
index 0000000000..a405c86d6f
--- /dev/null
+++ b/board/poppy/battery.c
@@ -0,0 +1,134 @@
+/* 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.
+ *
+ * Placeholder values for temporary battery pack.
+ */
+
+#include "battery.h"
+#include "battery_smart.h"
+#include "charge_state.h"
+#include "console.h"
+#include "ec_commands.h"
+#include "extpower.h"
+#include "util.h"
+
+/* Shutdown mode parameter to write to manufacturer access register */
+#define SB_SHIP_MODE_REG	0x3a
+#define SB_SHUTDOWN_DATA	0xC574
+
+static const struct battery_info info = {
+	.voltage_max = 13200,
+	.voltage_normal = 11550,
+	.voltage_min = 9100,
+	/* Pre-charge values. */
+	.precharge_current = 256, /* mA */
+
+	.start_charging_min_c = 0,
+	.start_charging_max_c = 50,
+	.charging_min_c = 0,
+	.charging_max_c = 60,
+	.discharging_min_c = 0,
+	.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_SHIP_MODE_REG, SB_SHUTDOWN_DATA);
+
+	if (rv != EC_SUCCESS)
+		return rv;
+
+	return sb_write(SB_SHIP_MODE_REG, SB_SHUTDOWN_DATA);
+}
+
+/* TODO(crosbug.com/p/61098): Verify that this applies with our battery pack */
+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;
+
+	if (extpower_is_present()) {
+		/* Check if battery charging + discharging 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 |
+				BATTERY_CHARGING_DISABLED)) {
+			not_disconnected = 1;
+			return BATTERY_NOT_DISCONNECTED;
+		}
+
+		/*
+		 * Battery is neither charging nor discharging. 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;
+
+		/*
+		 * Battery is present and also the status is initialized and
+		 * no safety fault, battery is disconnected.
+		 */
+		if (battery_is_present() == BP_YES)
+			return BATTERY_DISCONNECTED;
+	}
+	not_disconnected = 1;
+	return BATTERY_NOT_DISCONNECTED;
+}
+
+int charger_profile_override(struct charge_state_data *curr)
+{
+	const struct battery_info *batt_info;
+	/* battery temp in 0.1 deg C */
+	int bat_temp_c = curr->batt.temperature - 2731;
+
+	batt_info = battery_get_info();
+	/* Don't charge if outside of allowable temperature range */
+	if (bat_temp_c >= batt_info->charging_max_c * 10 ||
+	    bat_temp_c < batt_info->charging_min_c * 10) {
+		curr->requested_current = 0;
+		curr->requested_voltage = 0;
+		curr->batt.flags &= ~BATT_FLAG_WANT_CHARGE;
+		curr->state = ST_IDLE;
+	}
+	return 0;
+}
+
+/* Customs options controllable by host command. */
+#define PARAM_FASTCHARGE (CS_PARAM_CUSTOM_PROFILE_MIN + 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;
+}