| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Driver for the NXP ISP1761 device controller |
| 3 | * |
| 4 | * Copyright 2014 Ideas on Board Oy |
| 5 | * |
| 6 | * Contacts: |
| 7 | * Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU General Public License |
| 11 | * version 2 as published by the Free Software Foundation. |
| 12 | */ |
| 13 | |
| 14 | #ifndef _ISP1760_UDC_H_ |
| 15 | #define _ISP1760_UDC_H_ |
| 16 | |
| 17 | #include <linux/ioport.h> |
| 18 | #include <linux/list.h> |
| 19 | #include <linux/spinlock.h> |
| 20 | #include <linux/timer.h> |
| 21 | #include <linux/usb/gadget.h> |
| 22 | |
| 23 | struct isp1760_device; |
| 24 | struct isp1760_udc; |
| 25 | |
| 26 | enum isp1760_ctrl_state { |
| 27 | ISP1760_CTRL_SETUP, /* Waiting for a SETUP transaction */ |
| 28 | ISP1760_CTRL_DATA_IN, /* Setup received, data IN stage */ |
| 29 | ISP1760_CTRL_DATA_OUT, /* Setup received, data OUT stage */ |
| 30 | ISP1760_CTRL_STATUS, /* 0-length request in status stage */ |
| 31 | }; |
| 32 | |
| 33 | struct isp1760_ep { |
| 34 | struct isp1760_udc *udc; |
| 35 | struct usb_ep ep; |
| 36 | |
| 37 | struct list_head queue; |
| 38 | |
| 39 | unsigned int addr; |
| 40 | unsigned int maxpacket; |
| 41 | char name[7]; |
| 42 | |
| 43 | const struct usb_endpoint_descriptor *desc; |
| 44 | |
| 45 | bool rx_pending; |
| 46 | bool halted; |
| 47 | bool wedged; |
| 48 | }; |
| 49 | |
| 50 | /** |
| 51 | * struct isp1760_udc - UDC state information |
| 52 | * irq: IRQ number |
| 53 | * irqname: IRQ name (as passed to request_irq) |
| 54 | * regs: Base address of the UDC registers |
| 55 | * driver: Gadget driver |
| 56 | * gadget: Gadget device |
| 57 | * lock: Protects driver, vbus_timer, ep, ep0_*, DC_EPINDEX register |
| 58 | * ep: Array of endpoints |
| 59 | * ep0_state: Control request state for endpoint 0 |
| 60 | * ep0_dir: Direction of the current control request |
| 61 | * ep0_length: Length of the current control request |
| 62 | * connected: Tracks gadget driver bus connection state |
| 63 | */ |
| 64 | struct isp1760_udc { |
| 65 | #ifdef CONFIG_USB_ISP1761_UDC |
| 66 | struct isp1760_device *isp; |
| 67 | |
| 68 | int irq; |
| 69 | char *irqname; |
| 70 | void __iomem *regs; |
| 71 | |
| 72 | struct usb_gadget_driver *driver; |
| 73 | struct usb_gadget gadget; |
| 74 | |
| 75 | spinlock_t lock; |
| 76 | struct timer_list vbus_timer; |
| 77 | |
| 78 | struct isp1760_ep ep[15]; |
| 79 | |
| 80 | enum isp1760_ctrl_state ep0_state; |
| 81 | u8 ep0_dir; |
| 82 | u16 ep0_length; |
| 83 | |
| 84 | bool connected; |
| 85 | |
| 86 | unsigned int devstatus; |
| 87 | #endif |
| 88 | }; |
| 89 | |
| 90 | #ifdef CONFIG_USB_ISP1761_UDC |
| 91 | int isp1760_udc_register(struct isp1760_device *isp, int irq, |
| 92 | unsigned long irqflags); |
| 93 | void isp1760_udc_unregister(struct isp1760_device *isp); |
| 94 | #else |
| 95 | static inline int isp1760_udc_register(struct isp1760_device *isp, int irq, |
| 96 | unsigned long irqflags) |
| 97 | { |
| 98 | return 0; |
| 99 | } |
| 100 | |
| 101 | static inline void isp1760_udc_unregister(struct isp1760_device *isp) |
| 102 | { |
| 103 | } |
| 104 | #endif |
| 105 | |
| 106 | #endif |