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/errno.h>
  33 #include <linux/delay.h>
  34 #include <linux/sched.h>
  35 #include <linux/slab.h>
  36 #include <linux/init.h>
  37 #include <linux/timer.h>
  38 #include <linux/list.h>
  39 #include <linux/interrupt.h>
  40 #include <linux/proc_fs.h>
  41 #include <linux/mm.h>
  42 #include <linux/device.h>
  43 #include <linux/dma-mapping.h>
  44
  45 #include <asm/byteorder.h>
  46 #include <asm/dma.h>
  47 #include <asm/io.h>
  48 #include <asm/irq.h>
  49 #include <asm/system.h>
  50 #include <asm/unaligned.h>
  51 #include <asm/hardware.h>
  52
  53 #include <linux/usb_ch9.h>
  54 #include <linux/usb_gadget.h>
  55
  56 /*
  57  * Memory map
  58  */
  59
  60 #define USB_FA                                  0x80000200      // function address register
  61 #define USB_PM                                  0x80000204      // power management register
  62
  63 #define USB_IN_INT                              0x80000208      // IN interrupt register bank (EP0-EP3)
  64 #define USB_OUT_INT                             0x80000210      // OUT interrupt register bank (EP2)
  65 #define USB_INT                                 0x80000218      // interrupt register bank
  66
  67 #define USB_IN_INT_EN                   0x8000021C      // IN interrupt enable register bank
  68 #define USB_OUT_INT_EN                  0x80000224      // OUT interrupt enable register bank
  69 #define USB_INT_EN                              0x8000022C      // USB interrupt enable register bank
  70
  71 #define USB_FRM_NUM1                    0x80000230      // Frame number1 register
  72 #define USB_FRM_NUM2                    0x80000234      // Frame number2 register
  73 #define USB_INDEX                               0x80000238      // index register
  74
  75 #define USB_IN_MAXP                             0x80000240      // IN MAXP register
  76 #define USB_IN_CSR1                             0x80000244      // IN CSR1 register/EP0 CSR register
  77 #define USB_EP0_CSR                             0x80000244      // IN CSR1 register/EP0 CSR register
  78 #define USB_IN_CSR2                             0x80000248      // IN CSR2 register
  79 #define USB_OUT_MAXP                    0x8000024C      // OUT MAXP register
  80
  81 #define USB_OUT_CSR1                    0x80000250      // OUT CSR1 register
  82 #define USB_OUT_CSR2                    0x80000254      // OUT CSR2 register
  83 #define USB_OUT_FIFO_WC1                0x80000258      // OUT FIFO write count1 register
  84 #define USB_OUT_FIFO_WC2                0x8000025C      // OUT FIFO write count2 register
  85
  86 #define USB_RESET                               0x8000044C      // USB reset register
  87
  88 #define USB_EP0_FIFO                    0x80000280
  89 #define USB_EP1_FIFO                    0x80000284
  90 #define USB_EP2_FIFO                    0x80000288
  91 #define USB_EP3_FIFO                    0x8000028c
  92
  93 /*
  94  * USB reset register
  95  */
  96 #define USB_RESET_APB                   (1<<1)  //resets USB APB control side WRITE
  97 #define USB_RESET_IO                    (1<<0)  //resets USB IO side WRITE
  98
  99 /*
 100  * USB function address register
 101  */
 102 #define USB_FA_ADDR_UPDATE              (1<<7)
 103 #define USB_FA_FUNCTION_ADDR    (0x7F)
 104
 105 /*
 106  * Power Management register
 107  */
 108 #define PM_USB_DCP                              (1<<5)
 109 #define PM_USB_ENABLE                   (1<<4)
 110 #define PM_USB_RESET                    (1<<3)
 111 #define PM_UC_RESUME                    (1<<2)
 112 #define PM_SUSPEND_MODE                 (1<<1)
 113 #define PM_ENABLE_SUSPEND               (1<<0)
 114
 115 /*
 116  * IN interrupt register
 117  */
 118 #define USB_IN_INT_EP3                          (1<<3)
 119 #define USB_IN_INT_EP1                          (1<<1)
 120 #define USB_IN_INT_EP0                          (1<<0)
 121
 122 /*
 123  * OUT interrupt register
 124  */
 125 #define USB_OUT_INT_EP2                         (1<<2)
 126
 127 /*
 128  * USB interrupt register
 129  */
 130 #define USB_INT_RESET_INT                       (1<<2)
 131 #define USB_INT_RESUME_INT                      (1<<1)
 132 #define USB_INT_SUSPEND_INT                     (1<<0)
 133
 134 /*
 135  * USB interrupt enable register
 136  */
 137 #define USB_INT_EN_USB_RESET_INTER              (1<<2)
 138 #define USB_INT_EN_RESUME_INTER                 (1<<1)
 139 #define USB_INT_EN_SUSPEND_INTER                (1<<0)
 140
 141 /*
 142  * INCSR1 register
 143  */
 144 #define USB_IN_CSR1_CLR_DATA_TOGGLE             (1<<6)
 145 #define USB_IN_CSR1_SENT_STALL                  (1<<5)
 146 #define USB_IN_CSR1_SEND_STALL                  (1<<4)
 147 #define USB_IN_CSR1_FIFO_FLUSH                  (1<<3)
 148 #define USB_IN_CSR1_FIFO_NOT_EMPTY              (1<<1)
 149 #define USB_IN_CSR1_IN_PKT_RDY                  (1<<0)
 150
 151 /*
 152  * INCSR2 register
 153  */
 154 #define USB_IN_CSR2_AUTO_SET                    (1<<7)
 155 #define USB_IN_CSR2_USB_DMA_EN                  (1<<4)
 156
 157 /*
 158  * OUT CSR1 register
 159  */
 160 #define USB_OUT_CSR1_CLR_DATA_REG               (1<<7)
 161 #define USB_OUT_CSR1_SENT_STALL                 (1<<6)
 162 #define USB_OUT_CSR1_SEND_STALL                 (1<<5)
 163 #define USB_OUT_CSR1_FIFO_FLUSH                 (1<<4)
 164 #define USB_OUT_CSR1_FIFO_FULL                  (1<<1)
 165 #define USB_OUT_CSR1_OUT_PKT_RDY                (1<<0)
 166
 167 /*
 168  * OUT CSR2 register
 169  */
 170 #define USB_OUT_CSR2_AUTO_CLR                   (1<<7)
 171 #define USB_OUT_CSR2_USB_DMA_EN                 (1<<4)
 172
 173 /*
 174  * EP0 CSR
 175  */
 176 #define EP0_CLR_SETUP_END               (1<<7)  /* Clear "Setup Ends" Bit (w) */
 177 #define EP0_CLR_OUT                             (1<<6)  /* Clear "Out packet ready" Bit (w) */
 178 #define EP0_SEND_STALL                  (1<<5)  /* Send STALL Handshake (rw) */
 179 #define EP0_SETUP_END                   (1<<4)  /* Setup Ends (r) */
 180
 181 #define EP0_DATA_END                    (1<<3)  /* Data end (rw) */
 182 #define EP0_SENT_STALL                  (1<<2)  /* Sent Stall Handshake (r) */
 183 #define EP0_IN_PKT_RDY                  (1<<1)  /* In packet ready (rw) */
 184 #define EP0_OUT_PKT_RDY                 (1<<0)  /* Out packet ready (r) */
 185
 186 /* general CSR */
 187 #define OUT_PKT_RDY             (1<<0)
 188 #define IN_PKT_RDY              (1<<0)
 189
 190 /*
 191  * IN/OUT MAXP register
 192  */
 193 #define USB_OUT_MAXP_MAXP                       (0xF)
 194 #define USB_IN_MAXP_MAXP                        (0xF)
 195
 196 // Max packet size
 197 //#define EP0_PACKETSIZE        0x10
 198 #define EP0_PACKETSIZE          0x8
 199 #define EP0_MAXPACKETSIZE       0x10
 200
 201 #define UDC_MAX_ENDPOINTS       4
 202
 203 #define WAIT_FOR_SETUP          0
 204 #define DATA_STATE_XMIT         1
 205 #define DATA_STATE_NEED_ZLP     2
 206 #define WAIT_FOR_OUT_STATUS     3
 207 #define DATA_STATE_RECV         4
 208
 209 /* ********************************************************************************************* */
 210 /* IO
 211  */
 212
 213 typedef enum ep_type {
 214         ep_control, ep_bulk_in, ep_bulk_out, ep_interrupt
 215 } ep_type_t;
 216
 217 struct lh7a40x_ep {
 218         struct usb_ep ep;
 219         struct lh7a40x_udc *dev;
 220
 221         const struct usb_endpoint_descriptor *desc;
 222         struct list_head queue;
 223         unsigned long pio_irqs;
 224
 225         u8 stopped;
 226         u8 bEndpointAddress;
 227         u8 bmAttributes;
 228
 229         ep_type_t ep_type;
 230         u32 fifo;
 231         u32 csr1;
 232         u32 csr2;
 233 };
 234
 235 struct lh7a40x_request {
 236         struct usb_request req;
 237         struct list_head queue;
 238 };
 239
 240 struct lh7a40x_udc {
 241         struct usb_gadget gadget;
 242         struct usb_gadget_driver *driver;
 243         struct device *dev;
 244         spinlock_t lock;
 245
 246         int ep0state;
 247         struct lh7a40x_ep ep[UDC_MAX_ENDPOINTS];
 248
 249         unsigned char usb_address;
 250
 251         unsigned req_pending:1, req_std:1, req_config:1;
 252 };
 253
 254 extern struct lh7a40x_udc *the_controller;
 255
 256 #define ep_is_in(EP)            (((EP)->bEndpointAddress&USB_DIR_IN)==USB_DIR_IN)
 257 #define ep_index(EP)            ((EP)->bEndpointAddress&0xF)
 258 #define ep_maxpacket(EP)        ((EP)->ep.maxpacket)
 259
 260 #endif