drivers/usb/gadget/udc/r8a66597-udc.h

   1 /*
   2  * R8A66597 UDC
   3  *
   4  * Copyright (C) 2007-2009 Renesas Solutions Corp.
   5  *
   6  * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
   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; version 2 of the License.
  11  */
  12
  13 #ifndef __R8A66597_H__
  14 #define __R8A66597_H__
  15
  16 #include <linux/clk.h>
  17 #include <linux/usb/r8a66597.h>
  18
  19 #define R8A66597_MAX_SAMPLING   10
  20
  21 #define R8A66597_MAX_NUM_PIPE   8
  22 #define R8A66597_MAX_NUM_BULK   3
  23 #define R8A66597_MAX_NUM_ISOC   2
  24 #define R8A66597_MAX_NUM_INT    2
  25
  26 #define R8A66597_BASE_PIPENUM_BULK      3
  27 #define R8A66597_BASE_PIPENUM_ISOC      1
  28 #define R8A66597_BASE_PIPENUM_INT       6
  29
  30 #define R8A66597_BASE_BUFNUM    6
  31 #define R8A66597_MAX_BUFNUM     0x4F
  32
  33 #define is_bulk_pipe(pipenum)   \
  34         ((pipenum >= R8A66597_BASE_PIPENUM_BULK) && \
  35          (pipenum < (R8A66597_BASE_PIPENUM_BULK + R8A66597_MAX_NUM_BULK)))
  36 #define is_interrupt_pipe(pipenum)      \
  37         ((pipenum >= R8A66597_BASE_PIPENUM_INT) && \
  38          (pipenum < (R8A66597_BASE_PIPENUM_INT + R8A66597_MAX_NUM_INT)))
  39 #define is_isoc_pipe(pipenum)   \
  40         ((pipenum >= R8A66597_BASE_PIPENUM_ISOC) && \
  41          (pipenum < (R8A66597_BASE_PIPENUM_ISOC + R8A66597_MAX_NUM_ISOC)))
  42
  43 #define r8a66597_is_sudmac(r8a66597)    (r8a66597->pdata->sudmac)
  44 struct r8a66597_pipe_info {
  45         u16     pipe;
  46         u16     epnum;
  47         u16     maxpacket;
  48         u16     type;
  49         u16     interval;
  50         u16     dir_in;
  51 };
  52
  53 struct r8a66597_request {
  54         struct usb_request      req;
  55         struct list_head        queue;
  56 };
  57
  58 struct r8a66597_ep {
  59         struct usb_ep           ep;
  60         struct r8a66597         *r8a66597;
  61         struct r8a66597_dma     *dma;
  62
  63         struct list_head        queue;
  64         unsigned                busy:1;
  65         unsigned                wedge:1;
  66         unsigned                internal_ccpl:1;        /* use only control */
  67
  68         /* this member can able to after r8a66597_enable */
  69         unsigned                use_dma:1;
  70         u16                     pipenum;
  71         u16                     type;
  72
  73         /* register address */
  74         unsigned char           fifoaddr;
  75         unsigned char           fifosel;
  76         unsigned char           fifoctr;
  77         unsigned char           pipectr;
  78         unsigned char           pipetre;
  79         unsigned char           pipetrn;
  80 };
  81
  82 struct r8a66597_dma {
  83         unsigned                used:1;
  84         unsigned                dir:1;  /* 1 = IN(write), 0 = OUT(read) */
  85 };
  86
  87 struct r8a66597 {
  88         spinlock_t              lock;
  89         void __iomem            *reg;
  90         void __iomem            *sudmac_reg;
  91
  92         struct clk *clk;
  93         struct r8a66597_platdata        *pdata;
  94
  95         struct usb_gadget               gadget;
  96         struct usb_gadget_driver        *driver;
  97
  98         struct r8a66597_ep      ep[R8A66597_MAX_NUM_PIPE];
  99         struct r8a66597_ep      *pipenum2ep[R8A66597_MAX_NUM_PIPE];
 100         struct r8a66597_ep      *epaddr2ep[16];
 101         struct r8a66597_dma     dma;
 102
 103         struct timer_list       timer;
 104         struct usb_request      *ep0_req;       /* for internal request */
 105         u16                     ep0_data;       /* for internal request */
 106         u16                     old_vbus;
 107         u16                     scount;
 108         u16                     old_dvsq;
 109         u16                     device_status;  /* for GET_STATUS */
 110
 111         /* pipe config */
 112         unsigned char bulk;
 113         unsigned char interrupt;
 114         unsigned char isochronous;
 115         unsigned char num_dma;
 116
 117         unsigned irq_sense_low:1;
 118 };
 119
 120 #define gadget_to_r8a66597(_gadget)     \
 121                 container_of(_gadget, struct r8a66597, gadget)
 122 #define r8a66597_to_gadget(r8a66597) (&r8a66597->gadget)
 123 #define r8a66597_to_dev(r8a66597)       (r8a66597->gadget.dev.parent)
 124
 125 static inline u16 r8a66597_read(struct r8a66597 *r8a66597, unsigned long offset)
 126 {
 127         return ioread16(r8a66597->reg + offset);
 128 }
 129
 130 static inline void r8a66597_read_fifo(struct r8a66597 *r8a66597,
 131                                       unsigned long offset,
 132                                       unsigned char *buf,
 133                                       int len)
 134 {
 135         void __iomem *fifoaddr = r8a66597->reg + offset;
 136         unsigned int data = 0;
 137         int i;
 138
 139         if (r8a66597->pdata->on_chip) {
 140                 /* 32-bit accesses for on_chip controllers */
 141
 142                 /* aligned buf case */
 143                 if (len >= 4 && !((unsigned long)buf & 0x03)) {
 144                         ioread32_rep(fifoaddr, buf, len / 4);
 145                         buf += len & ~0x03;
 146                         len &= 0x03;
 147                 }
 148
 149                 /* unaligned buf case */
 150                 for (i = 0; i < len; i++) {
 151                         if (!(i & 0x03))
 152                                 data = ioread32(fifoaddr);
 153
 154                         buf[i] = (data >> ((i & 0x03) * 8)) & 0xff;
 155                 }
 156         } else {
 157                 /* 16-bit accesses for external controllers */
 158
 159                 /* aligned buf case */
 160                 if (len >= 2 && !((unsigned long)buf & 0x01)) {
 161                         ioread16_rep(fifoaddr, buf, len / 2);
 162                         buf += len & ~0x01;
 163                         len &= 0x01;
 164                 }
 165
 166                 /* unaligned buf case */
 167                 for (i = 0; i < len; i++) {
 168                         if (!(i & 0x01))
 169                                 data = ioread16(fifoaddr);
 170
 171                         buf[i] = (data >> ((i & 0x01) * 8)) & 0xff;
 172                 }
 173         }
 174 }
 175
 176 static inline void r8a66597_write(struct r8a66597 *r8a66597, u16 val,
 177                                   unsigned long offset)
 178 {
 179         iowrite16(val, r8a66597->reg + offset);
 180 }
 181
 182 static inline void r8a66597_mdfy(struct r8a66597 *r8a66597,
 183                                  u16 val, u16 pat, unsigned long offset)
 184 {
 185         u16 tmp;
 186         tmp = r8a66597_read(r8a66597, offset);
 187         tmp = tmp & (~pat);
 188         tmp = tmp | val;
 189         r8a66597_write(r8a66597, tmp, offset);
 190 }
 191
 192 #define r8a66597_bclr(r8a66597, val, offset)    \
 193                         r8a66597_mdfy(r8a66597, 0, val, offset)
 194 #define r8a66597_bset(r8a66597, val, offset)    \
 195                         r8a66597_mdfy(r8a66597, val, 0, offset)
 196
 197 static inline void r8a66597_write_fifo(struct r8a66597 *r8a66597,
 198                                        struct r8a66597_ep *ep,
 199                                        unsigned char *buf,
 200                                        int len)
 201 {
 202         void __iomem *fifoaddr = r8a66597->reg + ep->fifoaddr;
 203         int adj = 0;
 204         int i;
 205
 206         if (r8a66597->pdata->on_chip) {
 207                 /* 32-bit access only if buf is 32-bit aligned */
 208                 if (len >= 4 && !((unsigned long)buf & 0x03)) {
 209                         iowrite32_rep(fifoaddr, buf, len / 4);
 210                         buf += len & ~0x03;
 211                         len &= 0x03;
 212                 }
 213         } else {
 214                 /* 16-bit access only if buf is 16-bit aligned */
 215                 if (len >= 2 && !((unsigned long)buf & 0x01)) {
 216                         iowrite16_rep(fifoaddr, buf, len / 2);
 217                         buf += len & ~0x01;
 218                         len &= 0x01;
 219                 }
 220         }
 221
 222         /* adjust fifo address in the little endian case */
 223         if (!(r8a66597_read(r8a66597, CFIFOSEL) & BIGEND)) {
 224                 if (r8a66597->pdata->on_chip)
 225                         adj = 0x03; /* 32-bit wide */
 226                 else
 227                         adj = 0x01; /* 16-bit wide */
 228         }
 229
 230         if (r8a66597->pdata->wr0_shorted_to_wr1)
 231                 r8a66597_bclr(r8a66597, MBW_16, ep->fifosel);
 232         for (i = 0; i < len; i++)
 233                 iowrite8(buf[i], fifoaddr + adj - (i & adj));
 234         if (r8a66597->pdata->wr0_shorted_to_wr1)
 235                 r8a66597_bclr(r8a66597, MBW_16, ep->fifosel);
 236 }
 237
 238 static inline u16 get_xtal_from_pdata(struct r8a66597_platdata *pdata)
 239 {
 240         u16 clock = 0;
 241
 242         switch (pdata->xtal) {
 243         case R8A66597_PLATDATA_XTAL_12MHZ:
 244                 clock = XTAL12;
 245                 break;
 246         case R8A66597_PLATDATA_XTAL_24MHZ:
 247                 clock = XTAL24;
 248                 break;
 249         case R8A66597_PLATDATA_XTAL_48MHZ:
 250                 clock = XTAL48;
 251                 break;
 252         default:
 253                 printk(KERN_ERR "r8a66597: platdata clock is wrong.\n");
 254                 break;
 255         }
 256
 257         return clock;
 258 }
 259
 260 static inline u32 r8a66597_sudmac_read(struct r8a66597 *r8a66597,
 261                                        unsigned long offset)
 262 {
 263         return ioread32(r8a66597->sudmac_reg + offset);
 264 }
 265
 266 static inline void r8a66597_sudmac_write(struct r8a66597 *r8a66597, u32 val,
 267                                          unsigned long offset)
 268 {
 269         iowrite32(val, r8a66597->sudmac_reg + offset);
 270 }
 271
 272 #define get_pipectr_addr(pipenum)       (PIPE1CTR + (pipenum - 1) * 2)
 273 #define get_pipetre_addr(pipenum)       (PIPE1TRE + (pipenum - 1) * 4)
 274 #define get_pipetrn_addr(pipenum)       (PIPE1TRN + (pipenum - 1) * 4)
 275
 276 #define enable_irq_ready(r8a66597, pipenum)     \
 277         enable_pipe_irq(r8a66597, pipenum, BRDYENB)
 278 #define disable_irq_ready(r8a66597, pipenum)    \
 279         disable_pipe_irq(r8a66597, pipenum, BRDYENB)
 280 #define enable_irq_empty(r8a66597, pipenum)     \
 281         enable_pipe_irq(r8a66597, pipenum, BEMPENB)
 282 #define disable_irq_empty(r8a66597, pipenum)    \
 283         disable_pipe_irq(r8a66597, pipenum, BEMPENB)
 284 #define enable_irq_nrdy(r8a66597, pipenum)      \
 285         enable_pipe_irq(r8a66597, pipenum, NRDYENB)
 286 #define disable_irq_nrdy(r8a66597, pipenum)     \
 287         disable_pipe_irq(r8a66597, pipenum, NRDYENB)
 288
 289 #endif  /* __R8A66597_H__ */
 290