1 files changed, 77 insertions, 0 deletions
diff --git a/baseboard/mancomb/usb_pd_policy.c b/baseboard/mancomb/usb_pd_policy.c
new file mode 100644
index 0000000000..ac92a6e0ad
--- /dev/null
+++ b/baseboard/mancomb/usb_pd_policy.c
@@ -0,0 +1,77 @@
+/* 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.
+ */
+
+/* Shared USB-C policy for Zork boards */
+
+#include "charge_manager.h"
+#include "chipset.h"
+#include "common.h"
+#include "compile_time_macros.h"
+#include "console.h"
+#include "ec_commands.h"
+#include "gpio.h"
+#include "system.h"
+#include "usb_mux.h"
+#include "usb_pd.h"
+#include "usbc_ppc.h"
+#include "util.h"
+
+int pd_check_vconn_swap(int port)
+{
+	/*
+	 * Do not allow vconn swap 5V rail is off
+	 * S5_PGOOD depends on PG_PP5000_S5 being asserted,
+	 * so GPIO_S5_PGOOD is a reasonable proxy for PP5000_S5
+	 */
+	return gpio_get_level(GPIO_S5_PGOOD);
+}
+
+void pd_power_supply_reset(int port)
+{
+	/*
+	 * Don't need to shutoff VBus if we are not sourcing it
+	 * TODO: Ensure Vbus sourcing is being disabled appropriately to
+	 *       avoid invalid TC states
+	 */
+	if (ppc_is_sourcing_vbus(port)) {
+		/* Disable VBUS. */
+		ppc_vbus_source_enable(port, 0);
+
+		/* Enable discharge if we were previously sourcing 5V */
+		if (IS_ENABLED(CONFIG_USB_PD_DISCHARGE))
+			pd_set_vbus_discharge(port, 1);
+	}
+
+	/* Notify host of power info change. */
+	pd_send_host_event(PD_EVENT_POWER_CHANGE);
+}
+
+int pd_set_power_supply_ready(int port)
+{
+	int rv;
+
+	/* Disable charging. */
+	rv = ppc_vbus_sink_enable(port, 0);
+	if (rv)
+		return rv;
+
+	if (IS_ENABLED(CONFIG_USB_PD_DISCHARGE))
+		pd_set_vbus_discharge(port, 0);
+
+	/* Provide Vbus. */
+	rv = ppc_vbus_source_enable(port, 1);
+	if (rv)
+		return rv;
+
+	/* Notify host of power info change. */
+	pd_send_host_event(PD_EVENT_POWER_CHANGE);
+
+	return EC_SUCCESS;
+}
+
+int board_vbus_source_enabled(int port)
+{
+	return ppc_is_sourcing_vbus(port);
+}