| /** |
| * dwc3_otg.h - DesignWare USB3 DRD Controller OTG |
| * |
| * Copyright (c) 2012-2013, 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 __LINUX_USB_DWC3_OTG_H |
| #define __LINUX_USB_DWC3_OTG_H |
| |
| #include <linux/workqueue.h> |
| #include <linux/power_supply.h> |
| |
| #include <linux/usb/otg.h> |
| #include "power.h" |
| |
| #define DWC3_IDEV_CHG_MAX 1500 |
| |
| struct dwc3_charger; |
| |
| /** |
| * struct dwc3_otg: OTG driver data. Shared by HCD and DCD. |
| * @otg: USB OTG Transceiver structure. |
| * @irq: IRQ number assigned for HSUSB controller. |
| * @regs: ioremapped register base address. |
| * @sm_work: OTG state machine work. |
| * @charger: DWC3 external charger detector |
| * @inputs: OTG state machine inputs |
| */ |
| struct dwc3_otg { |
| struct usb_otg otg; |
| int irq; |
| struct dwc3 *dwc; |
| void __iomem *regs; |
| struct regulator *vbus_otg; |
| struct work_struct sm_work; |
| struct dwc3_charger *charger; |
| struct dwc3_ext_xceiv *ext_xceiv; |
| #define ID 0 |
| #define B_SESS_VLD 1 |
| unsigned long inputs; |
| struct power_supply *psy; |
| struct completion dwc3_xcvr_vbus_init; |
| int host_bus_suspend; |
| }; |
| |
| /** |
| * USB charger types |
| * |
| * DWC3_INVALID_CHARGER Invalid USB charger. |
| * DWC3_SDP_CHARGER Standard downstream port. Refers to a downstream port |
| * on USB compliant host/hub. |
| * DWC3_DCP_CHARGER Dedicated charger port (AC charger/ Wall charger). |
| * DWC3_CDP_CHARGER Charging downstream port. Enumeration can happen and |
| * IDEV_CHG_MAX can be drawn irrespective of USB state. |
| * DWC3_PROPRIETARY_CHARGER A proprietary charger pull DP and DM to specific |
| * voltages between 2.0-3.3v for identification. |
| */ |
| enum dwc3_chg_type { |
| DWC3_INVALID_CHARGER = 0, |
| DWC3_SDP_CHARGER, |
| DWC3_DCP_CHARGER, |
| DWC3_CDP_CHARGER, |
| DWC3_PROPRIETARY_CHARGER, |
| }; |
| |
| struct dwc3_charger { |
| enum dwc3_chg_type chg_type; |
| unsigned max_power; |
| bool charging_disabled; |
| |
| /* start/stop charger detection, provided by external charger module */ |
| void (*start_detection)(struct dwc3_charger *charger, bool start); |
| |
| /* to notify OTG about charger detection completion, provided by OTG */ |
| void (*notify_detection_complete)(struct usb_otg *otg, |
| struct dwc3_charger *charger); |
| }; |
| |
| /* for external charger driver */ |
| extern int dwc3_set_charger(struct usb_otg *otg, struct dwc3_charger *charger); |
| |
| enum dwc3_ext_events { |
| DWC3_EVENT_NONE = 0, /* no change event */ |
| DWC3_EVENT_PHY_RESUME, /* PHY has come out of LPM */ |
| DWC3_EVENT_XCEIV_STATE, /* XCEIV state (id/bsv) has changed */ |
| }; |
| |
| enum dwc3_id_state { |
| DWC3_ID_GROUND = 0, |
| DWC3_ID_FLOAT, |
| }; |
| |
| /* external transceiver that can perform connect/disconnect monitoring in LPM */ |
| struct dwc3_ext_xceiv { |
| enum dwc3_id_state id; |
| bool bsv; |
| bool otg_capability; |
| |
| /* to notify OTG about LPM exit event, provided by OTG */ |
| void (*notify_ext_events)(struct usb_otg *otg, |
| enum dwc3_ext_events ext_event); |
| /* for block reset USB core */ |
| void (*ext_block_reset)(void); |
| }; |
| |
| /* for external transceiver driver */ |
| extern int dwc3_set_ext_xceiv(struct usb_otg *otg, |
| struct dwc3_ext_xceiv *ext_xceiv); |
| |
| #endif /* __LINUX_USB_DWC3_OTG_H */ |