1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved. 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun #ifndef _DP_HPD_H_ 7*4882a593Smuzhiyun #define _DP_HPD_H_ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun //#include <linux/usb/usbpd.h> 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #include <linux/types.h> 12*4882a593Smuzhiyun #include <linux/device.h> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun enum plug_orientation { 15*4882a593Smuzhiyun ORIENTATION_NONE, 16*4882a593Smuzhiyun ORIENTATION_CC1, 17*4882a593Smuzhiyun ORIENTATION_CC2, 18*4882a593Smuzhiyun }; 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun /** 21*4882a593Smuzhiyun * struct dp_usbpd - DisplayPort status 22*4882a593Smuzhiyun * 23*4882a593Smuzhiyun * @orientation: plug orientation configuration 24*4882a593Smuzhiyun * @low_pow_st: low power state 25*4882a593Smuzhiyun * @adaptor_dp_en: adaptor functionality enabled 26*4882a593Smuzhiyun * @multi_func: multi-function preferred 27*4882a593Smuzhiyun * @usb_config_req: request to switch to usb 28*4882a593Smuzhiyun * @exit_dp_mode: request exit from displayport mode 29*4882a593Smuzhiyun * @hpd_high: Hot Plug Detect signal is high. 30*4882a593Smuzhiyun * @hpd_irq: Change in the status since last message 31*4882a593Smuzhiyun * @alt_mode_cfg_done: bool to specify alt mode status 32*4882a593Smuzhiyun * @debug_en: bool to specify debug mode 33*4882a593Smuzhiyun * @connect: simulate disconnect or connect for debug mode 34*4882a593Smuzhiyun */ 35*4882a593Smuzhiyun struct dp_usbpd { 36*4882a593Smuzhiyun enum plug_orientation orientation; 37*4882a593Smuzhiyun bool low_pow_st; 38*4882a593Smuzhiyun bool adaptor_dp_en; 39*4882a593Smuzhiyun bool multi_func; 40*4882a593Smuzhiyun bool usb_config_req; 41*4882a593Smuzhiyun bool exit_dp_mode; 42*4882a593Smuzhiyun bool hpd_high; 43*4882a593Smuzhiyun bool hpd_irq; 44*4882a593Smuzhiyun bool alt_mode_cfg_done; 45*4882a593Smuzhiyun bool debug_en; 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun int (*connect)(struct dp_usbpd *dp_usbpd, bool hpd); 48*4882a593Smuzhiyun }; 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun /** 51*4882a593Smuzhiyun * struct dp_usbpd_cb - callback functions provided by the client 52*4882a593Smuzhiyun * 53*4882a593Smuzhiyun * @configure: called by usbpd module when PD communication has 54*4882a593Smuzhiyun * been completed and the usb peripheral has been configured on 55*4882a593Smuzhiyun * dp mode. 56*4882a593Smuzhiyun * @disconnect: notify the cable disconnect issued by usb. 57*4882a593Smuzhiyun * @attention: notify any attention message issued by usb. 58*4882a593Smuzhiyun */ 59*4882a593Smuzhiyun struct dp_usbpd_cb { 60*4882a593Smuzhiyun int (*configure)(struct device *dev); 61*4882a593Smuzhiyun int (*disconnect)(struct device *dev); 62*4882a593Smuzhiyun int (*attention)(struct device *dev); 63*4882a593Smuzhiyun }; 64*4882a593Smuzhiyun 65*4882a593Smuzhiyun /** 66*4882a593Smuzhiyun * dp_hpd_get() - setup hpd module 67*4882a593Smuzhiyun * 68*4882a593Smuzhiyun * @dev: device instance of the caller 69*4882a593Smuzhiyun * @cb: struct containing callback function pointers. 70*4882a593Smuzhiyun * 71*4882a593Smuzhiyun * This function allows the client to initialize the usbpd 72*4882a593Smuzhiyun * module. The module will communicate with HPD module. 73*4882a593Smuzhiyun */ 74*4882a593Smuzhiyun struct dp_usbpd *dp_hpd_get(struct device *dev, struct dp_usbpd_cb *cb); 75*4882a593Smuzhiyun 76*4882a593Smuzhiyun int dp_hpd_register(struct dp_usbpd *dp_usbpd); 77*4882a593Smuzhiyun void dp_hpd_unregister(struct dp_usbpd *dp_usbpd); 78*4882a593Smuzhiyun int dp_hpd_connect(struct dp_usbpd *dp_usbpd, bool hpd); 79*4882a593Smuzhiyun 80*4882a593Smuzhiyun #endif /* _DP_HPD_H_ */ 81