79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.
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*/
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#ifndef _DP_HPD_H_
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#define _DP_HPD_H_
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//#include <linux/usb/usbpd.h>
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#include <linux/types.h>
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#include <linux/device.h>
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enum plug_orientation {
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ORIENTATION_NONE,
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ORIENTATION_CC1,
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ORIENTATION_CC2,
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};
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/**
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* struct dp_usbpd - DisplayPort status
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*
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* @orientation: plug orientation configuration
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* @low_pow_st: low power state
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* @adaptor_dp_en: adaptor functionality enabled
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* @multi_func: multi-function preferred
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* @usb_config_req: request to switch to usb
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* @exit_dp_mode: request exit from displayport mode
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* @hpd_irq: Change in the status since last message
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* @alt_mode_cfg_done: bool to specify alt mode status
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* @debug_en: bool to specify debug mode
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* @connect: simulate disconnect or connect for debug mode
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*/
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struct dp_usbpd {
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enum plug_orientation orientation;
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bool low_pow_st;
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bool adaptor_dp_en;
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bool multi_func;
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bool usb_config_req;
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bool exit_dp_mode;
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bool hpd_irq;
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bool alt_mode_cfg_done;
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bool debug_en;
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int (*connect)(struct dp_usbpd *dp_usbpd, bool hpd);
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};
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/**
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* struct dp_usbpd_cb - callback functions provided by the client
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*
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* @configure: called by usbpd module when PD communication has
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* been completed and the usb peripheral has been configured on
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* dp mode.
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* @disconnect: notify the cable disconnect issued by usb.
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* @attention: notify any attention message issued by usb.
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*/
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struct dp_usbpd_cb {
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int (*configure)(struct device *dev);
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int (*disconnect)(struct device *dev);
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int (*attention)(struct device *dev);
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};
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/**
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* dp_hpd_get() - setup hpd module
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*
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* @dev: device instance of the caller
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* @cb: struct containing callback function pointers.
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*
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* This function allows the client to initialize the usbpd
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* module. The module will communicate with HPD module.
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*/
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struct dp_usbpd *dp_hpd_get(struct device *dev, struct dp_usbpd_cb *cb);
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int dp_hpd_register(struct dp_usbpd *dp_usbpd);
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void dp_hpd_unregister(struct dp_usbpd *dp_usbpd);
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int dp_hpd_connect(struct dp_usbpd *dp_usbpd, bool hpd);
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#endif /* _DP_HPD_H_ */
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