drivers/usb/gadget/udc/s3c2410_udc.h

   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         struct dentry                   *regs_info;
  93 };
  94 #define to_s3c2410(g)   (container_of((g), struct s3c2410_udc, gadget))
  95
  96 #endif