Linux Audio

Check our new training course

Loading...
Note: File does not exist in v3.1.
 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.
 4 */
 5
 6#ifndef _DP_HPD_H_
 7#define _DP_HPD_H_
 8
 9//#include <linux/usb/usbpd.h>
10
11#include <linux/types.h>
12#include <linux/device.h>
13
14enum plug_orientation {
15	ORIENTATION_NONE,
16	ORIENTATION_CC1,
17	ORIENTATION_CC2,
18};
19
20/**
21 * struct dp_usbpd - DisplayPort status
22 *
23 * @orientation: plug orientation configuration
24 * @low_pow_st: low power state
25 * @adaptor_dp_en: adaptor functionality enabled
26 * @multi_func: multi-function preferred
27 * @usb_config_req: request to switch to usb
28 * @exit_dp_mode: request exit from displayport mode
29 * @hpd_irq: Change in the status since last message
30 * @alt_mode_cfg_done: bool to specify alt mode status
31 * @debug_en: bool to specify debug mode
32 * @connect: simulate disconnect or connect for debug mode
33 */
34struct dp_usbpd {
35	enum plug_orientation orientation;
36	bool low_pow_st;
37	bool adaptor_dp_en;
38	bool multi_func;
39	bool usb_config_req;
40	bool exit_dp_mode;
41	bool hpd_irq;
42	bool alt_mode_cfg_done;
43	bool debug_en;
44
45	int (*connect)(struct dp_usbpd *dp_usbpd, bool hpd);
46};
47
48/**
49 * struct dp_usbpd_cb - callback functions provided by the client
50 *
51 * @configure: called by usbpd module when PD communication has
52 * been completed and the usb peripheral has been configured on
53 * dp mode.
54 * @disconnect: notify the cable disconnect issued by usb.
55 * @attention: notify any attention message issued by usb.
56 */
57struct dp_usbpd_cb {
58	int (*configure)(struct device *dev);
59	int (*disconnect)(struct device *dev);
60	int (*attention)(struct device *dev);
61};
62
63/**
64 * dp_hpd_get() - setup hpd module
65 *
66 * @dev: device instance of the caller
67 * @cb: struct containing callback function pointers.
68 *
69 * This function allows the client to initialize the usbpd
70 * module. The module will communicate with HPD module.
71 */
72struct dp_usbpd *dp_hpd_get(struct device *dev, struct dp_usbpd_cb *cb);
73
74int dp_hpd_register(struct dp_usbpd *dp_usbpd);
75void dp_hpd_unregister(struct dp_usbpd *dp_usbpd);
76int dp_hpd_connect(struct dp_usbpd *dp_usbpd, bool hpd);
77
78#endif /* _DP_HPD_H_ */