| /* |
| * Copyright (c) 2012-2017, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| */ |
| |
| #ifndef _DP_USBPD_H_ |
| #define _DP_USBPD_H_ |
| |
| #include <linux/usb/usbpd.h> |
| |
| #include <linux/types.h> |
| #include <linux/device.h> |
| |
| /** |
| * enum dp_usbpd_port - usb/dp port type |
| * @DP_USBPD_PORT_NONE: port not configured |
| * @DP_USBPD_PORT_UFP_D: Upstream Facing Port - DisplayPort |
| * @DP_USBPD_PORT_DFP_D: Downstream Facing Port - DisplayPort |
| * @DP_USBPD_PORT_D_UFP_D: Both UFP & DFP - DisplayPort |
| */ |
| |
| enum dp_usbpd_port { |
| DP_USBPD_PORT_NONE, |
| DP_USBPD_PORT_UFP_D, |
| DP_USBPD_PORT_DFP_D, |
| DP_USBPD_PORT_D_UFP_D, |
| }; |
| |
| /** |
| * struct dp_usbpd - DisplayPort status |
| * |
| * @port: port configured |
| * 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 |
| * @simulate_connect: simulate disconnect or connect for debug mode |
| */ |
| struct dp_usbpd { |
| enum dp_usbpd_port port; |
| 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 (*simulate_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_usbpd_get() - setup usbpd 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 usb driver and |
| * handles the power delivery (PD) communication with the |
| * sink/usb device. This module will notify the client using |
| * the callback functions about the connection and status. |
| */ |
| struct dp_usbpd *dp_usbpd_get(struct device *dev, struct dp_usbpd_cb *cb); |
| |
| void dp_usbpd_put(struct dp_usbpd *pd); |
| #endif /* _DP_USBPD_H_ */ |