1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * linux/drivers/usb/gadget/s3c2410_udc.h 4 * Samsung on-chip full speed USB device controllers 5 * 6 * Copyright (C) 2004-2007 Herbert Pötzl - Arnaud Patard 7 * Additional cleanups by Ben Dooks <ben-linux@fluff.org> 8 */ 9 10 #ifndef _S3C2410_UDC_H 11 #define _S3C2410_UDC_H 12 13 struct s3c2410_ep { 14 struct list_head queue; 15 unsigned long last_io; /* jiffies timestamp */ 16 struct usb_gadget *gadget; 17 struct s3c2410_udc *dev; 18 struct usb_ep ep; 19 u8 num; 20 21 unsigned short fifo_size; 22 u8 bEndpointAddress; 23 u8 bmAttributes; 24 25 unsigned halted : 1; 26 unsigned already_seen : 1; 27 unsigned setup_stage : 1; 28 }; 29 30 31 /* Warning : ep0 has a fifo of 16 bytes */ 32 /* Don't try to set 32 or 64 */ 33 /* also testusb 14 fails wit 16 but is */ 34 /* fine with 8 */ 35 #define EP0_FIFO_SIZE 8 36 #define EP_FIFO_SIZE 64 37 #define DEFAULT_POWER_STATE 0x00 38 39 #define S3C2440_EP_FIFO_SIZE 128 40 41 static const char ep0name [] = "ep0"; 42 43 static const char *const ep_name[] = { 44 ep0name, /* everyone has ep0 */ 45 /* s3c2410 four bidirectional bulk endpoints */ 46 "ep1-bulk", "ep2-bulk", "ep3-bulk", "ep4-bulk", 47 }; 48 49 #define S3C2410_ENDPOINTS ARRAY_SIZE(ep_name) 50 51 struct s3c2410_request { 52 struct list_head queue; /* ep's requests */ 53 struct usb_request req; 54 }; 55 56 enum ep0_state { 57 EP0_IDLE, 58 EP0_IN_DATA_PHASE, 59 EP0_OUT_DATA_PHASE, 60 EP0_END_XFER, 61 EP0_STALL, 62 }; 63 64 static const char *ep0states[]= { 65 "EP0_IDLE", 66 "EP0_IN_DATA_PHASE", 67 "EP0_OUT_DATA_PHASE", 68 "EP0_END_XFER", 69 "EP0_STALL", 70 }; 71 72 struct s3c2410_udc { 73 spinlock_t lock; 74 75 struct s3c2410_ep ep[S3C2410_ENDPOINTS]; 76 int address; 77 struct usb_gadget gadget; 78 struct usb_gadget_driver *driver; 79 struct s3c2410_request fifo_req; 80 u8 fifo_buf[EP_FIFO_SIZE]; 81 u16 devstatus; 82 83 u32 port_status; 84 int ep0state; 85 86 unsigned got_irq : 1; 87 88 unsigned req_std : 1; 89 unsigned req_config : 1; 90 unsigned req_pending : 1; 91 u8 vbus; 92 int irq; 93 }; 94 #define to_s3c2410(g) (container_of((g), struct s3c2410_udc, gadget)) 95 96 #endif 97