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  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #ifndef __S3C_USB_GADGET
  23 #define __S3C_USB_GADGET
  24
  25 #include <asm/errno.h>
  26 #include <linux/usb/ch9.h>
  27 #include <linux/usb/gadget.h>
  28 #include <linux/list.h>
  29 #include <usb/lin_gadget_compat.h>
  30
  31 #define PHY0_SLEEP              (1 << 5)
  32
  33 /*-------------------------------------------------------------------------*/
  34 /* DMA bounce buffer size, 16K is enough even for mass storage */
  35 #define DMA_BUFFER_SIZE (4096*4)
  36
  37 #define EP0_FIFO_SIZE           64
  38 #define EP_FIFO_SIZE            512
  39 #define EP_FIFO_SIZE2           1024
  40 /* ep0-control, ep1in-bulk, ep2out-bulk, ep3in-int */
  41 #define S3C_MAX_ENDPOINTS       4
  42 #define S3C_MAX_HW_ENDPOINTS    16
  43
  44 #define WAIT_FOR_SETUP          0
  45 #define DATA_STATE_XMIT         1
  46 #define DATA_STATE_NEED_ZLP     2
  47 #define WAIT_FOR_OUT_STATUS     3
  48 #define DATA_STATE_RECV         4
  49 #define WAIT_FOR_COMPLETE       5
  50 #define WAIT_FOR_OUT_COMPLETE   6
  51 #define WAIT_FOR_IN_COMPLETE    7
  52 #define WAIT_FOR_NULL_COMPLETE  8
  53
  54 #define TEST_J_SEL              0x1
  55 #define TEST_K_SEL              0x2
  56 #define TEST_SE0_NAK_SEL        0x3
  57 #define TEST_PACKET_SEL         0x4
  58 #define TEST_FORCE_ENABLE_SEL   0x5
  59
  60 /* ************************************************************************* */
  61 /* IO
  62  */
  63
  64 enum ep_type {
  65         ep_control, ep_bulk_in, ep_bulk_out, ep_interrupt
  66 };
  67
  68 struct s3c_ep {
  69         struct usb_ep ep;
  70         struct s3c_udc *dev;
  71
  72         const struct usb_endpoint_descriptor *desc;
  73         struct list_head queue;
  74         unsigned long pio_irqs;
  75         int len;
  76         void *dma_buf;
  77
  78         u8 stopped;
  79         u8 bEndpointAddress;
  80         u8 bmAttributes;
  81
  82         enum ep_type ep_type;
  83         int fifo_num;
  84 };
  85
  86 struct s3c_request {
  87         struct usb_request req;
  88         struct list_head queue;
  89 };
  90
  91 struct s3c_udc {
  92         struct usb_gadget gadget;
  93         struct usb_gadget_driver *driver;
  94
  95         struct s3c_plat_otg_data *pdata;
  96
  97         void *dma_buf[S3C_MAX_ENDPOINTS+1];
  98         dma_addr_t dma_addr[S3C_MAX_ENDPOINTS+1];
  99
 100         int ep0state;
 101         struct s3c_ep ep[S3C_MAX_ENDPOINTS];
 102
 103         unsigned char usb_address;
 104
 105         unsigned req_pending:1, req_std:1, req_config:1;
 106 };
 107
 108 extern struct s3c_udc *the_controller;
 109
 110 #define ep_is_in(EP) (((EP)->bEndpointAddress&USB_DIR_IN) == USB_DIR_IN)
 111 #define ep_index(EP) ((EP)->bEndpointAddress&0xF)
 112 #define ep_maxpacket(EP) ((EP)->ep.maxpacket)
 113
 114 /*-------------------------------------------------------------------------*/
 115 /* #define DEBUG_UDC */
 116 #ifdef DEBUG_UDC
 117 #define DBG(stuff...)           printf("udc: " stuff)
 118 #else
 119 #define DBG(stuff...)           do {} while (0)
 120 #endif
 121
 122 #ifdef DEBUG_S3C_UDC_SETUP
 123 #define DEBUG_SETUP(fmt, args...) printk(fmt, ##args)
 124 #else
 125 #define DEBUG_SETUP(fmt, args...) do {} while (0)
 126 #endif
 127
 128 #ifdef DEBUG_S3C_UDC_EP0
 129 #define DEBUG_EP0(fmt, args...) printk(fmt, ##args)
 130 #else
 131 #define DEBUG_EP0(fmt, args...) do {} while (0)
 132 #endif
 133
 134 #ifdef DEBUG_S3C_UDC
 135 #define DEBUG(fmt, args...) printk(fmt, ##args)
 136 #else
 137 #define DEBUG(fmt, args...) do {} while (0)
 138 #endif
 139
 140 #ifdef DEBUG_S3C_UDC_ISR
 141 #define DEBUG_ISR(fmt, args...) printk(fmt, ##args)
 142 #else
 143 #define DEBUG_ISR(fmt, args...) do {} while (0)
 144 #endif
 145
 146 #ifdef DEBUG_S3C_UDC_OUT_EP
 147 #define DEBUG_OUT_EP(fmt, args...) printk(fmt, ##args)
 148 #else
 149 #define DEBUG_OUT_EP(fmt, args...) do {} while (0)
 150 #endif
 151
 152 #ifdef DEBUG_S3C_UDC_IN_EP
 153 #define DEBUG_IN_EP(fmt, args...) printk(fmt, ##args)
 154 #else
 155 #define DEBUG_IN_EP(fmt, args...) do {} while (0)
 156 #endif
 157
 158 #define ERR(stuff...)           printf("ERR udc: " stuff)
 159 #define WARN(stuff...)          printf("WARNING udc: " stuff)
 160 #define INFO(stuff...)          printf("INFO udc: " stuff)
 161
 162 extern void otg_phy_init(struct s3c_udc *dev);
 163 extern void otg_phy_off(struct s3c_udc *dev);
 164
 165 extern void s3c_udc_ep_set_stall(struct s3c_ep *ep);
 166 extern int s3c_udc_probe(struct s3c_plat_otg_data *pdata);
 167
 168 struct s3c_plat_otg_data {
 169         int             (*phy_control)(int on);
 170         unsigned int    regs_phy;
 171         unsigned int    regs_otg;
 172         unsigned int    usb_phy_ctrl;
 173         unsigned int    usb_flags;
 174 };
 175 #endif