drivers/usb/gadget/lh7a40x_udc.h

   1 /*
   2  * linux/drivers/usb/gadget/lh7a40x_udc.h
   3  * Sharp LH7A40x on-chip full speed USB device controllers
   4  *
   5  * Copyright (C) 2004 Mikko Lahteenmaki, Nordic ID
   6  * Copyright (C) 2004 Bo Henriksen, Nordic ID
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #ifndef __LH7A40X_H_
  25 #define __LH7A40X_H_
  26
  27 #include <linux/config.h>
  28 #include <linux/module.h>
  29 #include <linux/kernel.h>
  30 #include <linux/ioport.h>
  31 #include <linux/types.h>
  32 #include <linux/version.h>
  33 #include <linux/errno.h>
  34 #include <linux/delay.h>
  35 #include <linux/sched.h>
  36 #include <linux/slab.h>
  37 #include <linux/init.h>
  38 #include <linux/timer.h>
  39 #include <linux/list.h>
  40 #include <linux/interrupt.h>
  41 #include <linux/proc_fs.h>
  42 #include <linux/mm.h>
  43 #include <linux/device.h>
  44 #include <linux/dma-mapping.h>
  45
  46 #include <asm/byteorder.h>
  47 #include <asm/dma.h>
  48 #include <asm/io.h>
  49 #include <asm/irq.h>
  50 #include <asm/system.h>
  51 #include <asm/unaligned.h>
  52 #include <asm/hardware.h>
  53
  54 #include <linux/usb_ch9.h>
  55 #include <linux/usb_gadget.h>
  56
  57 /*
  58  * Memory map
  59  */
  60
  61 #define USB_FA                                  0x80000200      // function address register
  62 #define USB_PM                                  0x80000204      // power management register
  63
  64 #define USB_IN_INT                              0x80000208      // IN interrupt register bank (EP0-EP3)
  65 #define USB_OUT_INT                             0x80000210      // OUT interrupt register bank (EP2)
  66 #define USB_INT                                 0x80000218      // interrupt register bank
  67
  68 #define USB_IN_INT_EN                   0x8000021C      // IN interrupt enable register bank
  69 #define USB_OUT_INT_EN                  0x80000224      // OUT interrupt enable register bank
  70 #define USB_INT_EN                              0x8000022C      // USB interrupt enable register bank
  71
  72 #define USB_FRM_NUM1                    0x80000230      // Frame number1 register
  73 #define USB_FRM_NUM2                    0x80000234      // Frame number2 register
  74 #define USB_INDEX                               0x80000238      // index register
  75
  76 #define USB_IN_MAXP                             0x80000240      // IN MAXP register
  77 #define USB_IN_CSR1                             0x80000244      // IN CSR1 register/EP0 CSR register
  78 #define USB_EP0_CSR                             0x80000244      // IN CSR1 register/EP0 CSR register
  79 #define USB_IN_CSR2                             0x80000248      // IN CSR2 register
  80 #define USB_OUT_MAXP                    0x8000024C      // OUT MAXP register
  81
  82 #define USB_OUT_CSR1                    0x80000250      // OUT CSR1 register
  83 #define USB_OUT_CSR2                    0x80000254      // OUT CSR2 register
  84 #define USB_OUT_FIFO_WC1                0x80000258      // OUT FIFO write count1 register
  85 #define USB_OUT_FIFO_WC2                0x8000025C      // OUT FIFO write count2 register
  86
  87 #define USB_RESET                               0x8000044C      // USB reset register
  88
  89 #define USB_EP0_FIFO                    0x80000280
  90 #define USB_EP1_FIFO                    0x80000284
  91 #define USB_EP2_FIFO                    0x80000288
  92 #define USB_EP3_FIFO                    0x8000028c
  93
  94 /*
  95  * USB reset register
  96  */
  97 #define USB_RESET_APB                   (1<<1)  //resets USB APB control side WRITE
  98 #define USB_RESET_IO                    (1<<0)  //resets USB IO side WRITE
  99
 100 /*
 101  * USB function address register
 102  */
 103 #define USB_FA_ADDR_UPDATE              (1<<7)
 104 #define USB_FA_FUNCTION_ADDR    (0x7F)
 105
 106 /*
 107  * Power Management register
 108  */
 109 #define PM_USB_DCP                              (1<<5)
 110 #define PM_USB_ENABLE                   (1<<4)
 111 #define PM_USB_RESET                    (1<<3)
 112 #define PM_UC_RESUME                    (1<<2)
 113 #define PM_SUSPEND_MODE                 (1<<1)
 114 #define PM_ENABLE_SUSPEND               (1<<0)
 115
 116 /*
 117  * IN interrupt register
 118  */
 119 #define USB_IN_INT_EP3                          (1<<3)
 120 #define USB_IN_INT_EP1                          (1<<1)
 121 #define USB_IN_INT_EP0                          (1<<0)
 122
 123 /*
 124  * OUT interrupt register
 125  */
 126 #define USB_OUT_INT_EP2                         (1<<2)
 127
 128 /*
 129  * USB interrupt register
 130  */
 131 #define USB_INT_RESET_INT                       (1<<2)
 132 #define USB_INT_RESUME_INT                      (1<<1)
 133 #define USB_INT_SUSPEND_INT                     (1<<0)
 134
 135 /*
 136  * USB interrupt enable register
 137  */
 138 #define USB_INT_EN_USB_RESET_INTER              (1<<2)
 139 #define USB_INT_EN_RESUME_INTER                 (1<<1)
 140 #define USB_INT_EN_SUSPEND_INTER                (1<<0)
 141
 142 /*
 143  * INCSR1 register
 144  */
 145 #define USB_IN_CSR1_CLR_DATA_TOGGLE             (1<<6)
 146 #define USB_IN_CSR1_SENT_STALL                  (1<<5)
 147 #define USB_IN_CSR1_SEND_STALL                  (1<<4)
 148 #define USB_IN_CSR1_FIFO_FLUSH                  (1<<3)
 149 #define USB_IN_CSR1_FIFO_NOT_EMPTY              (1<<1)
 150 #define USB_IN_CSR1_IN_PKT_RDY                  (1<<0)
 151
 152 /*
 153  * INCSR2 register
 154  */
 155 #define USB_IN_CSR2_AUTO_SET                    (1<<7)
 156 #define USB_IN_CSR2_USB_DMA_EN                  (1<<4)
 157
 158 /*
 159  * OUT CSR1 register
 160  */
 161 #define USB_OUT_CSR1_CLR_DATA_REG               (1<<7)
 162 #define USB_OUT_CSR1_SENT_STALL                 (1<<6)
 163 #define USB_OUT_CSR1_SEND_STALL                 (1<<5)
 164 #define USB_OUT_CSR1_FIFO_FLUSH                 (1<<4)
 165 #define USB_OUT_CSR1_FIFO_FULL                  (1<<1)
 166 #define USB_OUT_CSR1_OUT_PKT_RDY                (1<<0)
 167
 168 /*
 169  * OUT CSR2 register
 170  */
 171 #define USB_OUT_CSR2_AUTO_CLR                   (1<<7)
 172 #define USB_OUT_CSR2_USB_DMA_EN                 (1<<4)
 173
 174 /*
 175  * EP0 CSR
 176  */
 177 #define EP0_CLR_SETUP_END               (1<<7)  /* Clear "Setup Ends" Bit (w) */
 178 #define EP0_CLR_OUT                             (1<<6)  /* Clear "Out packet ready" Bit (w) */
 179 #define EP0_SEND_STALL                  (1<<5)  /* Send STALL Handshake (rw) */
 180 #define EP0_SETUP_END                   (1<<4)  /* Setup Ends (r) */
 181
 182 #define EP0_DATA_END                    (1<<3)  /* Data end (rw) */
 183 #define EP0_SENT_STALL                  (1<<2)  /* Sent Stall Handshake (r) */
 184 #define EP0_IN_PKT_RDY                  (1<<1)  /* In packet ready (rw) */
 185 #define EP0_OUT_PKT_RDY                 (1<<0)  /* Out packet ready (r) */
 186
 187 /* general CSR */
 188 #define OUT_PKT_RDY             (1<<0)
 189 #define IN_PKT_RDY              (1<<0)
 190
 191 /*
 192  * IN/OUT MAXP register
 193  */
 194 #define USB_OUT_MAXP_MAXP                       (0xF)
 195 #define USB_IN_MAXP_MAXP                        (0xF)
 196
 197 // Max packet size
 198 //#define EP0_PACKETSIZE        0x10
 199 #define EP0_PACKETSIZE          0x8
 200 #define EP0_MAXPACKETSIZE       0x10
 201
 202 #define UDC_MAX_ENDPOINTS       4
 203
 204 #define WAIT_FOR_SETUP          0
 205 #define DATA_STATE_XMIT         1
 206 #define DATA_STATE_NEED_ZLP     2
 207 #define WAIT_FOR_OUT_STATUS     3
 208 #define DATA_STATE_RECV         4
 209
 210 /* ********************************************************************************************* */
 211 /* IO
 212  */
 213
 214 typedef enum ep_type {
 215         ep_control, ep_bulk_in, ep_bulk_out, ep_interrupt
 216 } ep_type_t;
 217
 218 struct lh7a40x_ep {
 219         struct usb_ep ep;
 220         struct lh7a40x_udc *dev;
 221
 222         const struct usb_endpoint_descriptor *desc;
 223         struct list_head queue;
 224         unsigned long pio_irqs;
 225
 226         u8 stopped;
 227         u8 bEndpointAddress;
 228         u8 bmAttributes;
 229
 230         ep_type_t ep_type;
 231         u32 fifo;
 232         u32 csr1;
 233         u32 csr2;
 234 };
 235
 236 struct lh7a40x_request {
 237         struct usb_request req;
 238         struct list_head queue;
 239 };
 240
 241 struct lh7a40x_udc {
 242         struct usb_gadget gadget;
 243         struct usb_gadget_driver *driver;
 244         struct device *dev;
 245         spinlock_t lock;
 246
 247         int ep0state;
 248         struct lh7a40x_ep ep[UDC_MAX_ENDPOINTS];
 249
 250         unsigned char usb_address;
 251
 252         unsigned req_pending:1, req_std:1, req_config:1;
 253 };
 254
 255 extern struct lh7a40x_udc *the_controller;
 256
 257 #define ep_is_in(EP)            (((EP)->bEndpointAddress&USB_DIR_IN)==USB_DIR_IN)
 258 #define ep_index(EP)            ((EP)->bEndpointAddress&0xF)
 259 #define ep_maxpacket(EP)        ((EP)->ep.maxpacket)
 260
 261 #endif