drivers/usb/gadget/fotg210.h

   1 /*
   2  * Faraday FOTG210 USB OTG controller
   3  *
   4  * Copyright (C) 2013 Faraday Technology Corporation
   5  * Author: Yuan-Hsin Chen <yhchen@faraday-tech.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  */
  12
  13 #include <linux/kernel.h>
  14
  15 #define FOTG210_MAX_NUM_EP      5 /* ep0...ep4 */
  16 #define FOTG210_MAX_FIFO_NUM    4 /* fifo0...fifo4 */
  17
  18 /* Global Mask of HC/OTG/DEV interrupt Register(0xC4) */
  19 #define FOTG210_GMIR            0xC4
  20 #define GMIR_INT_POLARITY       0x8 /*Active High*/
  21 #define GMIR_MHC_INT            0x4
  22 #define GMIR_MOTG_INT           0x2
  23 #define GMIR_MDEV_INT           0x1
  24
  25 /*  Device Main Control Register(0x100) */
  26 #define FOTG210_DMCR            0x100
  27 #define DMCR_HS_EN              (1 << 6)
  28 #define DMCR_CHIP_EN            (1 << 5)
  29 #define DMCR_SFRST              (1 << 4)
  30 #define DMCR_GOSUSP             (1 << 3)
  31 #define DMCR_GLINT_EN           (1 << 2)
  32 #define DMCR_HALF_SPEED         (1 << 1)
  33 #define DMCR_CAP_RMWAKUP        (1 << 0)
  34
  35 /* Device Address Register(0x104) */
  36 #define FOTG210_DAR             0x104
  37 #define DAR_AFT_CONF            (1 << 7)
  38
  39 /* Device Test Register(0x108) */
  40 #define FOTG210_DTR             0x108
  41 #define DTR_TST_CLRFF           (1 << 0)
  42
  43 /* PHY Test Mode Selector register(0x114) */
  44 #define FOTG210_PHYTMSR         0x114
  45 #define PHYTMSR_TST_PKT         (1 << 4)
  46 #define PHYTMSR_TST_SE0NAK      (1 << 3)
  47 #define PHYTMSR_TST_KSTA        (1 << 2)
  48 #define PHYTMSR_TST_JSTA        (1 << 1)
  49 #define PHYTMSR_UNPLUG          (1 << 0)
  50
  51 /* Cx configuration and FIFO Empty Status register(0x120) */
  52 #define FOTG210_DCFESR          0x120
  53 #define DCFESR_FIFO_EMPTY(fifo) (1 << 8 << (fifo))
  54 #define DCFESR_CX_EMP           (1 << 5)
  55 #define DCFESR_CX_CLR           (1 << 3)
  56 #define DCFESR_CX_STL           (1 << 2)
  57 #define DCFESR_TST_PKDONE       (1 << 1)
  58 #define DCFESR_CX_DONE          (1 << 0)
  59
  60 /* Device IDLE Counter Register(0x124) */
  61 #define FOTG210_DICR            0x124
  62
  63 /* Device Mask of Interrupt Group Register (0x130) */
  64 #define FOTG210_DMIGR           0x130
  65 #define DMIGR_MINT_G0           (1 << 0)
  66
  67 /* Device Mask of Interrupt Source Group 0(0x134) */
  68 #define FOTG210_DMISGR0         0x134
  69 #define DMISGR0_MCX_COMEND      (1 << 3)
  70 #define DMISGR0_MCX_OUT_INT     (1 << 2)
  71 #define DMISGR0_MCX_IN_INT      (1 << 1)
  72 #define DMISGR0_MCX_SETUP_INT   (1 << 0)
  73
  74 /* Device Mask of Interrupt Source Group 1 Register(0x138)*/
  75 #define FOTG210_DMISGR1         0x138
  76 #define DMISGR1_MF3_IN_INT      (1 << 19)
  77 #define DMISGR1_MF2_IN_INT      (1 << 18)
  78 #define DMISGR1_MF1_IN_INT      (1 << 17)
  79 #define DMISGR1_MF0_IN_INT      (1 << 16)
  80 #define DMISGR1_MF_IN_INT(fifo) (1 << (16 + (fifo)))
  81 #define DMISGR1_MF3_SPK_INT     (1 << 7)
  82 #define DMISGR1_MF3_OUT_INT     (1 << 6)
  83 #define DMISGR1_MF2_SPK_INT     (1 << 5)
  84 #define DMISGR1_MF2_OUT_INT     (1 << 4)
  85 #define DMISGR1_MF1_SPK_INT     (1 << 3)
  86 #define DMISGR1_MF1_OUT_INT     (1 << 2)
  87 #define DMISGR1_MF0_SPK_INT     (1 << 1)
  88 #define DMISGR1_MF0_OUT_INT     (1 << 0)
  89 #define DMISGR1_MF_OUTSPK_INT(fifo)     (0x3 << (fifo) * 2)
  90
  91 /* Device Mask of Interrupt Source Group 2 Register (0x13C) */
  92 #define FOTG210_DMISGR2         0x13C
  93 #define DMISGR2_MDMA_ERROR      (1 << 8)
  94 #define DMISGR2_MDMA_CMPLT      (1 << 7)
  95
  96 /* Device Interrupt group Register (0x140) */
  97 #define FOTG210_DIGR            0x140
  98 #define DIGR_INT_G2             (1 << 2)
  99 #define DIGR_INT_G1             (1 << 1)
 100 #define DIGR_INT_G0             (1 << 0)
 101
 102 /* Device Interrupt Source Group 0 Register (0x144) */
 103 #define FOTG210_DISGR0          0x144
 104 #define DISGR0_CX_COMABT_INT    (1 << 5)
 105 #define DISGR0_CX_COMFAIL_INT   (1 << 4)
 106 #define DISGR0_CX_COMEND_INT    (1 << 3)
 107 #define DISGR0_CX_OUT_INT       (1 << 2)
 108 #define DISGR0_CX_IN_INT        (1 << 1)
 109 #define DISGR0_CX_SETUP_INT     (1 << 0)
 110
 111 /* Device Interrupt Source Group 1 Register (0x148) */
 112 #define FOTG210_DISGR1          0x148
 113 #define DISGR1_OUT_INT(fifo)    (1 << ((fifo) * 2))
 114 #define DISGR1_SPK_INT(fifo)    (1 << 1 << ((fifo) * 2))
 115 #define DISGR1_IN_INT(fifo)     (1 << 16 << (fifo))
 116
 117 /* Device Interrupt Source Group 2 Register (0x14C) */
 118 #define FOTG210_DISGR2          0x14C
 119 #define DISGR2_DMA_ERROR        (1 << 8)
 120 #define DISGR2_DMA_CMPLT        (1 << 7)
 121 #define DISGR2_RX0BYTE_INT      (1 << 6)
 122 #define DISGR2_TX0BYTE_INT      (1 << 5)
 123 #define DISGR2_ISO_SEQ_ABORT_INT        (1 << 4)
 124 #define DISGR2_ISO_SEQ_ERR_INT  (1 << 3)
 125 #define DISGR2_RESM_INT         (1 << 2)
 126 #define DISGR2_SUSP_INT         (1 << 1)
 127 #define DISGR2_USBRST_INT       (1 << 0)
 128
 129 /* Device Receive Zero-Length Data Packet Register (0x150)*/
 130 #define FOTG210_RX0BYTE         0x150
 131 #define RX0BYTE_EP8             (1 << 7)
 132 #define RX0BYTE_EP7             (1 << 6)
 133 #define RX0BYTE_EP6             (1 << 5)
 134 #define RX0BYTE_EP5             (1 << 4)
 135 #define RX0BYTE_EP4             (1 << 3)
 136 #define RX0BYTE_EP3             (1 << 2)
 137 #define RX0BYTE_EP2             (1 << 1)
 138 #define RX0BYTE_EP1             (1 << 0)
 139
 140 /* Device Transfer Zero-Length Data Packet Register (0x154)*/
 141 #define FOTG210_TX0BYTE         0x154
 142 #define TX0BYTE_EP8             (1 << 7)
 143 #define TX0BYTE_EP7             (1 << 6)
 144 #define TX0BYTE_EP6             (1 << 5)
 145 #define TX0BYTE_EP5             (1 << 4)
 146 #define TX0BYTE_EP4             (1 << 3)
 147 #define TX0BYTE_EP3             (1 << 2)
 148 #define TX0BYTE_EP2             (1 << 1)
 149 #define TX0BYTE_EP1             (1 << 0)
 150
 151 /* Device IN Endpoint x MaxPacketSize Register(0x160+4*(x-1)) */
 152 #define FOTG210_INEPMPSR(ep)    (0x160 + 4 * ((ep) - 1))
 153 #define INOUTEPMPSR_MPS(mps)    ((mps) & 0x2FF)
 154 #define INOUTEPMPSR_STL_EP      (1 << 11)
 155 #define INOUTEPMPSR_RESET_TSEQ  (1 << 12)
 156
 157 /* Device OUT Endpoint x MaxPacketSize Register(0x180+4*(x-1)) */
 158 #define FOTG210_OUTEPMPSR(ep)   (0x180 + 4 * ((ep) - 1))
 159
 160 /* Device Endpoint 1~4 Map Register (0x1A0) */
 161 #define FOTG210_EPMAP           0x1A0
 162 #define EPMAP_FIFONO(ep, dir)           \
 163         ((((ep) - 1) << ((ep) - 1) * 8) << ((dir) ? 0 : 4))
 164 #define EPMAP_FIFONOMSK(ep, dir)        \
 165         ((3 << ((ep) - 1) * 8) << ((dir) ? 0 : 4))
 166
 167 /* Device FIFO Map Register (0x1A8) */
 168 #define FOTG210_FIFOMAP         0x1A8
 169 #define FIFOMAP_DIROUT(fifo)    (0x0 << 4 << (fifo) * 8)
 170 #define FIFOMAP_DIRIN(fifo)     (0x1 << 4 << (fifo) * 8)
 171 #define FIFOMAP_BIDIR(fifo)     (0x2 << 4 << (fifo) * 8)
 172 #define FIFOMAP_NA(fifo)        (0x3 << 4 << (fifo) * 8)
 173 #define FIFOMAP_EPNO(ep)        ((ep) << ((ep) - 1) * 8)
 174 #define FIFOMAP_EPNOMSK(ep)     (0xF << ((ep) - 1) * 8)
 175
 176 /* Device FIFO Confuguration Register (0x1AC) */
 177 #define FOTG210_FIFOCF          0x1AC
 178 #define FIFOCF_TYPE(type, fifo) ((type) << (fifo) * 8)
 179 #define FIFOCF_BLK_SIN(fifo)    (0x0 << (fifo) * 8 << 2)
 180 #define FIFOCF_BLK_DUB(fifo)    (0x1 << (fifo) * 8 << 2)
 181 #define FIFOCF_BLK_TRI(fifo)    (0x2 << (fifo) * 8 << 2)
 182 #define FIFOCF_BLKSZ_512(fifo)  (0x0 << (fifo) * 8 << 4)
 183 #define FIFOCF_BLKSZ_1024(fifo) (0x1 << (fifo) * 8 << 4)
 184 #define FIFOCF_FIFO_EN(fifo)    (0x1 << (fifo) * 8 << 5)
 185
 186 /* Device FIFO n Instruction and Byte Count Register (0x1B0+4*n) */
 187 #define FOTG210_FIBCR(fifo)     (0x1B0 + (fifo) * 4)
 188 #define FIBCR_BCFX              0x7FF
 189 #define FIBCR_FFRST             (1 << 12)
 190
 191 /* Device DMA Target FIFO Number Register (0x1C0) */
 192 #define FOTG210_DMATFNR         0x1C0
 193 #define DMATFNR_ACC_CXF         (1 << 4)
 194 #define DMATFNR_ACC_F3          (1 << 3)
 195 #define DMATFNR_ACC_F2          (1 << 2)
 196 #define DMATFNR_ACC_F1          (1 << 1)
 197 #define DMATFNR_ACC_F0          (1 << 0)
 198 #define DMATFNR_ACC_FN(fifo)    (1 << (fifo))
 199 #define DMATFNR_DISDMA          0
 200
 201 /* Device DMA Controller Parameter setting 1 Register (0x1C8) */
 202 #define FOTG210_DMACPSR1        0x1C8
 203 #define DMACPSR1_DMA_LEN(len)   (((len) & 0xFFFF) << 8)
 204 #define DMACPSR1_DMA_ABORT      (1 << 3)
 205 #define DMACPSR1_DMA_TYPE(dir_in)       (((dir_in) ? 1 : 0) << 1)
 206 #define DMACPSR1_DMA_START      (1 << 0)
 207
 208 /* Device DMA Controller Parameter setting 2 Register (0x1CC) */
 209 #define FOTG210_DMACPSR2        0x1CC
 210
 211 /* Device DMA Controller Parameter setting 3 Register (0x1CC) */
 212 #define FOTG210_CXPORT          0x1D0
 213
 214 struct fotg210_request {
 215         struct usb_request      req;
 216         struct list_head        queue;
 217 };
 218
 219 struct fotg210_ep {
 220         struct usb_ep           ep;
 221         struct fotg210_udc      *fotg210;
 222
 223         struct list_head        queue;
 224         unsigned                stall:1;
 225         unsigned                wedged:1;
 226         unsigned                use_dma:1;
 227
 228         unsigned char           epnum;
 229         unsigned char           type;
 230         unsigned char           dir_in;
 231         unsigned int            maxp;
 232         const struct usb_endpoint_descriptor    *desc;
 233 };
 234
 235 struct fotg210_udc {
 236         spinlock_t              lock; /* protect the struct */
 237         void __iomem            *reg;
 238
 239         unsigned long           irq_trigger;
 240
 241         struct usb_gadget               gadget;
 242         struct usb_gadget_driver        *driver;
 243
 244         struct fotg210_ep       *ep[FOTG210_MAX_NUM_EP];
 245
 246         struct usb_request      *ep0_req;       /* for internal request */
 247         __le16                  ep0_data;
 248         u8                      ep0_dir;        /* 0/0x80  out/in */
 249
 250         u8                      reenum;         /* if re-enumeration */
 251 };
 252
 253 #define gadget_to_fotg210(g)    container_of((g), struct fotg210_udc, gadget)