include/usb/s3c_udc.h

   1 /*
   2  * drivers/usb/gadget/s3c_udc.h
   3  * Samsung S3C on-chip full/high speed USB device controllers
   4  * Copyright (C) 2005 for Samsung Electronics
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #ifndef __S3C_USB_GADGET
  10 #define __S3C_USB_GADGET
  11
  12 #include <asm/errno.h>
  13 #include <linux/usb/ch9.h>
  14 #include <linux/usb/gadget.h>
  15 #include <linux/list.h>
  16 #include <usb/lin_gadget_compat.h>
  17
  18 #define PHY0_SLEEP              (1 << 5)
  19
  20 /*-------------------------------------------------------------------------*/
  21 /* DMA bounce buffer size, 16K is enough even for mass storage */
  22 #define DMA_BUFFER_SIZE (4096*4)
  23
  24 #define EP0_FIFO_SIZE           64
  25 #define EP_FIFO_SIZE            512
  26 #define EP_FIFO_SIZE2           1024
  27 /* ep0-control, ep1in-bulk, ep2out-bulk, ep3in-int */
  28 #define S3C_MAX_ENDPOINTS       4
  29 #define S3C_MAX_HW_ENDPOINTS    16
  30
  31 #define WAIT_FOR_SETUP          0
  32 #define DATA_STATE_XMIT         1
  33 #define DATA_STATE_NEED_ZLP     2
  34 #define WAIT_FOR_OUT_STATUS     3
  35 #define DATA_STATE_RECV         4
  36 #define WAIT_FOR_COMPLETE       5
  37 #define WAIT_FOR_OUT_COMPLETE   6
  38 #define WAIT_FOR_IN_COMPLETE    7
  39 #define WAIT_FOR_NULL_COMPLETE  8
  40
  41 #define TEST_J_SEL              0x1
  42 #define TEST_K_SEL              0x2
  43 #define TEST_SE0_NAK_SEL        0x3
  44 #define TEST_PACKET_SEL         0x4
  45 #define TEST_FORCE_ENABLE_SEL   0x5
  46
  47 /* ************************************************************************* */
  48 /* IO
  49  */
  50
  51 enum ep_type {
  52         ep_control, ep_bulk_in, ep_bulk_out, ep_interrupt
  53 };
  54
  55 struct s3c_ep {
  56         struct usb_ep ep;
  57         struct s3c_udc *dev;
  58
  59         const struct usb_endpoint_descriptor *desc;
  60         struct list_head queue;
  61         unsigned long pio_irqs;
  62         int len;
  63         void *dma_buf;
  64
  65         u8 stopped;
  66         u8 bEndpointAddress;
  67         u8 bmAttributes;
  68
  69         enum ep_type ep_type;
  70         int fifo_num;
  71 };
  72
  73 struct s3c_request {
  74         struct usb_request req;
  75         struct list_head queue;
  76 };
  77
  78 struct s3c_udc {
  79         struct usb_gadget gadget;
  80         struct usb_gadget_driver *driver;
  81
  82         struct s3c_plat_otg_data *pdata;
  83
  84         void *dma_buf[S3C_MAX_ENDPOINTS+1];
  85         dma_addr_t dma_addr[S3C_MAX_ENDPOINTS+1];
  86
  87         int ep0state;
  88         struct s3c_ep ep[S3C_MAX_ENDPOINTS];
  89
  90         unsigned char usb_address;
  91
  92         unsigned req_pending:1, req_std:1;
  93 };
  94
  95 extern struct s3c_udc *the_controller;
  96
  97 #define ep_is_in(EP) (((EP)->bEndpointAddress&USB_DIR_IN) == USB_DIR_IN)
  98 #define ep_index(EP) ((EP)->bEndpointAddress&0xF)
  99 #define ep_maxpacket(EP) ((EP)->ep.maxpacket)
 100
 101 extern void otg_phy_init(struct s3c_udc *dev);
 102 extern void otg_phy_off(struct s3c_udc *dev);
 103
 104 extern void s3c_udc_ep_set_stall(struct s3c_ep *ep);
 105 extern int s3c_udc_probe(struct s3c_plat_otg_data *pdata);
 106
 107 struct s3c_plat_otg_data {
 108         int             (*phy_control)(int on);
 109         unsigned int    regs_phy;
 110         unsigned int    regs_otg;
 111         unsigned int    usb_phy_ctrl;
 112         unsigned int    usb_flags;
 113 };
 114 #endif