1 files changed, 0 insertions, 125 deletions
diff --git a/driver/usb_mux/virtual.c b/driver/usb_mux/virtual.c
deleted file mode 100644
index dbece4faf9..0000000000
--- a/driver/usb_mux/virtual.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/* 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.
- *
- * Virtual USB mux driver for host-controlled USB muxes.
- */
-
-#include "common.h"
-#include "console.h"
-#include "host_command.h"
-#include "task.h"
-#include "timer.h"
-#include "usb_mux.h"
-#include "util.h"
-
-/*
- * USB PD protocol configures the USB & DP mux state and USB PD policy
- * configures the HPD mux state. Both states are independent of each other
- * may differ when the PD role changes when in dock mode.
- */
-#define USB_PD_MUX_HPD_STATE	(USB_PD_MUX_HPD_LVL | USB_PD_MUX_HPD_IRQ)
-#define USB_PD_MUX_USB_DP_STATE	(USB_PD_MUX_USB_ENABLED | \
-			USB_PD_MUX_DP_ENABLED | USB_PD_MUX_POLARITY_INVERTED | \
-			USB_PD_MUX_SAFE_MODE | USB_PD_MUX_TBT_COMPAT_ENABLED | \
-			USB_PD_MUX_USB4_ENABLED)
-
-static mux_state_t virtual_mux_state[CONFIG_USB_PD_PORT_MAX_COUNT];
-
-static inline void virtual_mux_update_state(int port, mux_state_t mux_state,
-					    bool *ack_required)
-{
-	mux_state_t previous_mux_state = virtual_mux_state[port];
-
-	virtual_mux_state[port] = mux_state;
-
-	/*
-	 * Initialize ack_required to false to start, and set on necessary
-	 * conditions
-	 */
-	*ack_required = false;
-
-	if (!IS_ENABLED(CONFIG_HOSTCMD_EVENTS))
-		return;
-
-	host_set_single_event(EC_HOST_EVENT_USB_MUX);
-
-	if (!IS_ENABLED(CONFIG_USB_MUX_AP_ACK_REQUEST))
-		return;
-
-	/*
-	 * EC waits for the ACK from kernel indicating that TCSS Mux
-	 * configuration is completed. This mechanism is implemented for
-	 * entering, exiting the safe mode and entering the disconnect mode
-	 * This is needed to remove timing senstivity between BB retimer and
-	 * TCSS Mux to allow better synchronization between them and thereby
-	 * remain in the same state for achieving proper safe state
-	 * terminations.
-	 */
-
-	/* TODO(b/186777984): Wait for an ACK for all mux state change */
-
-	if ((!(previous_mux_state & USB_PD_MUX_SAFE_MODE) &&
-	     (mux_state & USB_PD_MUX_SAFE_MODE)) ||
-	   ((previous_mux_state & USB_PD_MUX_SAFE_MODE) &&
-	    !(mux_state & USB_PD_MUX_SAFE_MODE)) ||
-	   ((previous_mux_state != USB_PD_MUX_NONE) &&
-	    (mux_state == USB_PD_MUX_NONE)))
-		*ack_required = true;
-}
-
-static int virtual_init(const struct usb_mux *me)
-{
-	return EC_SUCCESS;
-}
-
-/*
- * Set the state of our 'virtual' mux. The EC does not actually control this
- * mux, so update the desired state, then notify the host of the update.
- */
-static int virtual_set_mux(const struct usb_mux *me, mux_state_t mux_state,
-			   bool *ack_required)
-{
-	int port = me->usb_port;
-
-	/* Current USB & DP mux status + existing HPD related mux status */
-	mux_state_t new_mux_state = (mux_state & ~USB_PD_MUX_HPD_STATE) |
-		(virtual_mux_state[port] & USB_PD_MUX_HPD_STATE);
-
-	virtual_mux_update_state(port, new_mux_state, ack_required);
-
-	return EC_SUCCESS;
-}
-
-/*
- * Get the state of our 'virtual' mux. Since we the EC does not actually
- * control this mux, and the EC has no way of knowing its actual status,
- * we return the desired state here.
- */
-static int virtual_get_mux(const struct usb_mux *me, mux_state_t *mux_state)
-{
-	int port = me->usb_port;
-
-	*mux_state = virtual_mux_state[port];
-
-	return EC_SUCCESS;
-}
-
-void virtual_hpd_update(const struct usb_mux *me, mux_state_t mux_state)
-{
-	int port = me->usb_port;
-	bool unused;
-
-	/* Current HPD related mux status + existing USB & DP mux status */
-	mux_state_t new_mux_state = mux_state |
-			(virtual_mux_state[port] & USB_PD_MUX_USB_DP_STATE);
-
-	/* HPD ACK isn't required for the EC to continue with its tasks */
-	virtual_mux_update_state(port, new_mux_state, &unused);
-}
-
-const struct usb_mux_driver virtual_usb_mux_driver = {
-	.init = virtual_init,
-	.set = virtual_set_mux,
-	.get = virtual_get_mux,
-};