| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Driver for the NXP ISP1761 device controller |
| * |
| * Copyright 2014 Ideas on Board Oy |
| * |
| * Contacts: |
| * Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
| */ |
| |
| #ifndef _ISP1760_UDC_H_ |
| #define _ISP1760_UDC_H_ |
| |
| #include <linux/ioport.h> |
| #include <linux/list.h> |
| #include <linux/spinlock.h> |
| #include <linux/timer.h> |
| #include <linux/usb/gadget.h> |
| |
| struct isp1760_device; |
| struct isp1760_udc; |
| |
| enum isp1760_ctrl_state { |
| ISP1760_CTRL_SETUP, /* Waiting for a SETUP transaction */ |
| ISP1760_CTRL_DATA_IN, /* Setup received, data IN stage */ |
| ISP1760_CTRL_DATA_OUT, /* Setup received, data OUT stage */ |
| ISP1760_CTRL_STATUS, /* 0-length request in status stage */ |
| }; |
| |
| struct isp1760_ep { |
| struct isp1760_udc *udc; |
| struct usb_ep ep; |
| |
| struct list_head queue; |
| |
| unsigned int addr; |
| unsigned int maxpacket; |
| char name[7]; |
| |
| const struct usb_endpoint_descriptor *desc; |
| |
| bool rx_pending; |
| bool halted; |
| bool wedged; |
| }; |
| |
| /** |
| * struct isp1760_udc - UDC state information |
| * irq: IRQ number |
| * irqname: IRQ name (as passed to request_irq) |
| * regs: Base address of the UDC registers |
| * driver: Gadget driver |
| * gadget: Gadget device |
| * lock: Protects driver, vbus_timer, ep, ep0_*, DC_EPINDEX register |
| * ep: Array of endpoints |
| * ep0_state: Control request state for endpoint 0 |
| * ep0_dir: Direction of the current control request |
| * ep0_length: Length of the current control request |
| * connected: Tracks gadget driver bus connection state |
| */ |
| struct isp1760_udc { |
| #ifdef CONFIG_USB_ISP1761_UDC |
| struct isp1760_device *isp; |
| |
| int irq; |
| char *irqname; |
| void __iomem *regs; |
| |
| struct usb_gadget_driver *driver; |
| struct usb_gadget gadget; |
| |
| spinlock_t lock; |
| struct timer_list vbus_timer; |
| |
| struct isp1760_ep ep[15]; |
| |
| enum isp1760_ctrl_state ep0_state; |
| u8 ep0_dir; |
| u16 ep0_length; |
| |
| bool connected; |
| |
| unsigned int devstatus; |
| #endif |
| }; |
| |
| #ifdef CONFIG_USB_ISP1761_UDC |
| int isp1760_udc_register(struct isp1760_device *isp, int irq, |
| unsigned long irqflags); |
| void isp1760_udc_unregister(struct isp1760_device *isp); |
| #else |
| static inline int isp1760_udc_register(struct isp1760_device *isp, int irq, |
| unsigned long irqflags) |
| { |
| return 0; |
| } |
| |
| static inline void isp1760_udc_unregister(struct isp1760_device *isp) |
| { |
| } |
| #endif |
| |
| #endif |