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48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
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//
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// Copyright 2024 Wenting Zhang <zephray@outlook.com>
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//
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/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* USB mux driver */
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#ifndef __CROS_EC_USB_MUX_H
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#define __CROS_EC_USB_MUX_H
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#include "usb_pd.h"
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/* USB-C mux state */
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typedef uint8_t mux_state_t;
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enum typec_mux {
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TYPEC_MUX_NONE = 0, /* Open switch */
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TYPEC_MUX_USB, /* USB only */
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TYPEC_MUX_DP, /* DP only */
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TYPEC_MUX_DOCK /* Both USB and DP */
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};
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enum usb_switch {
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USB_SWITCH_CONNECT,
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USB_SWITCH_DISCONNECT,
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USB_SWITCH_RESTORE,
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};
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/**
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* Initialize USB mux to its default state.
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*
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* @param port Port number.
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*/
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void usb_mux_init(int port);
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/**
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* Configure superspeed muxes on type-C port.
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*
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* @param port port number.
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* @param mux_mode mux selected function.
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* @param usb_config usb2.0 selected function.
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* @param polarity plug polarity (0=CC1, 1=CC2).
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*/
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void usb_mux_set(int port, enum typec_mux mux_mode,
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enum usb_switch usb_config, int polarity);
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#endif
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