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