1/* SPDX-License-Identifier: GPL-2.0+ */ 2/* 3 * Copyright (C) 2018 Broadcom 4 * 5 */ 6 7#ifndef __IPROC_I2C_H__ 8#define __IPROC_I2C_H__ 9 10/* Registers */ 11#define CCB_SMB_CFG_REG 0x0 12 13#define CCB_SMB_CFG_RST_MASK 0x80000000 14#define CCB_SMB_CFG_RST_SHIFT 31 15 16#define CCB_SMB_CFG_SMBEN_MASK 0x40000000 17#define CCB_SMB_CFG_SMBEN_SHIFT 30 18 19#define CCB_SMB_CFG_BITBANGEN_MASK 0x20000000 20#define CCB_SMB_CFG_BITBANGEN_SHIFT 29 21 22#define CCB_SMB_CFG_EN_NIC_SMBADDR0_MASK 0x10000000 23#define CCB_SMB_CFG_EN_NIC_SMBADDR0_SHIFT 28 24 25#define CCB_SMB_CFG_PROMISCMODE_MASK 0x08000000 26#define CCB_SMB_CFG_PROMISCMODE_SHIFT 27 27 28#define CCB_SMB_CFG_TSTMPCNTEN_MASK 0x04000000 29#define CCB_SMB_CFG_TSTMPCNTEN_SHIFT 26 30 31#define CCB_SMB_CFG_MSTRRTRYCNT_MASK 0x000F0000 32#define CCB_SMB_CFG_MSTRRTRYCNT_SHIFT 16 33 34#define CCB_SMB_TIMGCFG_REG 0x4 35 36#define CCB_SMB_TIMGCFG_MODE400_MASK 0x80000000 37#define CCB_SMB_TIMGCFG_MODE400_SHIFT 31 38 39#define CCB_SMB_TIMGCFG_RNDSLVSTR_MASK 0x7F000000 40#define CCB_SMB_TIMGCFG_RNDSLVSTR_SHIFT 24 41 42#define CCB_SMB_TIMGCFG_PERSLVSTR_MASK 0x00FF0000 43#define CCB_SMB_TIMGCFG_PERSLVSTR_SHIFT 16 44 45#define CCB_SMB_TIMGCFG_IDLTIME_MASK 0x0000FF00 46#define CCB_SMB_TIMGCFG_IDLTIME_SHIFT 8 47 48#define CCB_SMB_ADDR_REG 0x8 49 50#define CCB_SMB_EN_NIC_SMBADDR3_MASK 0x80000000 51#define CCB_SMB_EN_NIC_SMBADDR3_SHIFT 31 52 53#define CCB_SMB_NIC_SMBADDR3_MASK 0x7F000000 54#define CCB_SMB_NIC_SMBADDR3_SHIFT 24 55 56#define CCB_SMB_EN_NIC_SMBADDR2_MASK 0x00800000 57#define CCB_SMB_EN_NIC_SMBADDR2_SHIFT 23 58 59#define CCB_SMB_NIC_SMBADDR2_MASK 0x007F0000 60#define CCB_SMB_NIC_SMBADDR2_SHIFT 16 61 62#define CCB_SMB_EN_NIC_SMBADDR1_MASK 0x00008000 63#define CCB_SMB_EN_NIC_SMBADDR1_SHIFT 15 64 65#define CCB_SMB_NIC_SMBADDR1_MASK 0x00007F00 66#define CCB_SMB_NIC_SMBADDR1_SHIFT 8 67 68#define CCB_SMB_EN_NIC_SMBADDR0_MASK 0x00000080 69#define CCB_SMB_EN_NIC_SMBADDR0_SHIFT 7 70 71#define CCB_SMB_NIC_SMBADDR0_MASK 0x0000007F 72#define CCB_SMB_NIC_SMBADDR0_SHIFT 0 73 74#define CCB_SMB_MSTRFIFOCTL_REG 0xC 75 76#define CCB_SMB_MSTRRXFIFOFLSH_MASK 0x80000000 77#define CCB_SMB_MSTRRXFIFOFLSH_SHIFT 31 78 79#define CCB_SMB_MSTRTXFIFOFLSH_MASK 0x40000000 80#define CCB_SMB_MSTRTXFIFOFLSH_SHIFT 30 81 82#define CCB_SMB_MSTRRXPKTCNT_MASK 0x007F0000 83#define CCB_SMB_MSTRRXPKTCNT_SHIFT 16 84 85#define CCB_SMB_MSTRRXFIFOTHR_MASK 0x00003F00 86#define CCB_SMB_MSTRRXFIFOTHR_SHIFT 8 87 88#define CCB_SMB_SLVFIFOCTL_REG 0x10 89 90#define CCB_SMB_SLVRXFIFOFLSH_MASK 0x80000000 91#define CCB_SMB_SLVRXFIFOFLSH_SHIFT 31 92 93#define CCB_SMB_SLVTXFIFOFLSH_MASK 0x40000000 94#define CCB_SMB_SLVTXFIFOFLSH_SHIFT 30 95 96#define CCB_SMB_SLVRXPKTCNT_MASK 0x007F0000 97#define CCB_SMB_SLVRXPKTCNT_SHIFT 16 98 99#define CCB_SMB_SLVRXFIFOTHR_MASK 0x00003F00 100#define CCB_SMB_SLVRXFIFOTHR_SHIFT 8 101 102#define CCB_SMB_BITBANGCTL_REG 0x14 103 104#define CCB_SMB_SMBCLKIN_MASK 0x80000000 105#define CCB_SMB_SMBCLKIN_SHIFT 31 106 107#define CCB_SMB_SMBCLKOUTEN_MASK 0x40000000 108#define CCB_SMB_SMBCLKOUTEN_SHIFT 30 109 110#define CCB_SMB_SMBDATAIN_MASK 0x20000000 111#define CCB_SMB_SMBDATAIN_SHIFT 29 112 113#define CCB_SMB_SMBDATAOUTEN_MASK 0x10000000 114#define CCB_SMB_SMBDATAOUTEN_SHIFT 28 115 116#define CCB_SMB_MSTRCMD_REG 0x30 117 118#define CCB_SMB_MSTRSTARTBUSYCMD_MASK 0x80000000 119#define CCB_SMB_MSTRSTARTBUSYCMD_SHIFT 31 120 121#define CCB_SMB_MSTRABORT_MASK 0x40000000 122#define CCB_SMB_MSTRABORT_SHIFT 30 123 124#define CCB_SMB_MSTRSTS_MASK 0x0E000000 125#define CCB_SMB_MSTRSTS_SHIFT 25 126 127#define CCB_SMB_MSTRSMBUSPROTO_MASK 0x00001E00 128#define CCB_SMB_MSTRSMBUSPROTO_SHIFT 9 129 130#define CCB_SMB_MSTRPEC_MASK 0x00000100 131#define CCB_SMB_MSTRPEC_SHIFT 8 132 133#define CCB_SMB_MSTRRDBYTECNT_MASK 0x000000FF 134#define CCB_SMB_MSTRRDBYTECNT_SHIFT 0 135 136#define CCB_SMB_SLVCMD_REG 0x34 137 138#define CCB_SMB_SLVSTARTBUSYCMD_MASK 0x80000000 139#define CCB_SMB_SLVSTARTBUSYCMD_SHIFT 31 140 141#define CCB_SMB_SLVABORT_MASK 0x40000000 142#define CCB_SMB_SLVABORT_SHIFT 30 143 144#define CCB_SMB_SLVSTS_MASK 0x03800000 145#define CCB_SMB_SLVSTS_SHIFT 23 146 147#define CCB_SMB_SLVPEC_MASK 0x00000100 148#define CCB_SMB_SLVPEC_SHIFT 8 149 150#define CCB_SMB_EVTEN_REG 0x38 151 152#define CCB_SMB_MSTRRXFIFOFULLEN_MASK 0x80000000 153#define CCB_SMB_MSTRRXFIFOFULLEN_SHIFT 31 154 155#define CCB_SMB_MSTRRXFIFOTHRHITEN_MASK 0x40000000 156#define CCB_SMB_MSTRRXFIFOTHRHITEN_SHIFT 30 157 158#define CCB_SMB_MSTRRXEVTEN_MASK 0x20000000 159#define CCB_SMB_MSTRRXEVTEN_SHIFT 29 160 161#define CCB_SMB_MSTRSTARTBUSYEN_MASK 0x10000000 162#define CCB_SMB_MSTRSTARTBUSYEN_SHIFT 28 163 164#define CCB_SMB_MSTRTXUNDEN_MASK 0x08000000 165#define CCB_SMB_MSTRTXUNDEN_SHIFT 27 166 167#define CCB_SMB_SLVRXFIFOFULLEN_MASK 0x04000000 168#define CCB_SMB_SLVRXFIFOFULLEN_SHIFT 26 169 170#define CCB_SMB_SLVRXFIFOTHRHITEN_MASK 0x02000000 171#define CCB_SMB_SLVRXFIFOTHRHITEN_SHIFT 25 172 173#define CCB_SMB_SLVRXEVTEN_MASK 0x01000000 174#define CCB_SMB_SLVRXEVTEN_SHIFT 24 175 176#define CCB_SMB_SLVSTARTBUSYEN_MASK 0x00800000 177#define CCB_SMB_SLVSTARTBUSYEN_SHIFT 23 178 179#define CCB_SMB_SLVTXUNDEN_MASK 0x00400000 180#define CCB_SMB_SLVTXUNDEN_SHIFT 22 181 182#define CCB_SMB_SLVRDEVTEN_MASK 0x00200000 183#define CCB_SMB_SLVRDEVTEN_SHIFT 21 184 185#define CCB_SMB_EVTSTS_REG 0x3C 186 187#define CCB_SMB_MSTRRXFIFOFULLSTS_MASK 0x80000000 188#define CCB_SMB_MSTRRXFIFOFULLSTS_SHIFT 31 189 190#define CCB_SMB_MSTRRXFIFOTHRHITSTS_MASK 0x40000000 191#define CCB_SMB_MSTRRXFIFOTHRHITSTS_SHIFT 30 192 193#define CCB_SMB_MSTRRXEVTSTS_MASK 0x20000000 194#define CCB_SMB_MSTRRXEVTSTS_SHIFT 29 195 196#define CCB_SMB_MSTRSTARTBUSYSTS_MASK 0x10000000 197#define CCB_SMB_MSTRSTARTBUSYSTS_SHIFT 28 198 199#define CCB_SMB_MSTRTXUNDSTS_MASK 0x08000000 200#define CCB_SMB_MSTRTXUNDSTS_SHIFT 27 201 202#define CCB_SMB_SLVRXFIFOFULLSTS_MASK 0x04000000 203#define CCB_SMB_SLVRXFIFOFULLSTS_SHIFT 26 204 205#define CCB_SMB_SLVRXFIFOTHRHITSTS_MASK 0x02000000 206#define CCB_SMB_SLVRXFIFOTHRHITSTS_SHIFT 25 207 208#define CCB_SMB_SLVRXEVTSTS_MASK 0x01000000 209#define CCB_SMB_SLVRXEVTSTS_SHIFT 24 210 211#define CCB_SMB_SLVSTARTBUSYSTS_MASK 0x00800000 212#define CCB_SMB_SLVSTARTBUSYSTS_SHIFT 23 213 214#define CCB_SMB_SLVTXUNDSTS_MASK 0x00400000 215#define CCB_SMB_SLVTXUNDSTS_SHIFT 22 216 217#define CCB_SMB_SLVRDEVTSTS_MASK 0x00200000 218#define CCB_SMB_SLVRDEVTSTS_SHIFT 21 219 220#define CCB_SMB_MSTRDATAWR_REG 0x40 221 222#define CCB_SMB_MSTRWRSTS_MASK 0x80000000 223#define CCB_SMB_MSTRWRSTS_SHIFT 31 224 225#define CCB_SMB_MSTRWRDATA_MASK 0x000000FF 226#define CCB_SMB_MSTRWRDATA_SHIFT 0 227 228#define CCB_SMB_MSTRDATARD_REG 0x44 229 230#define CCB_SMB_MSTRRDSTS_MASK 0xC0000000 231#define CCB_SMB_MSTRRDSTS_SHIFT 30 232 233#define CCB_SMB_MSTRRDPECERR_MASK 0x20000000 234#define CCB_SMB_MSTRRDPECERR_SHIFT 29 235 236#define CCB_SMB_MSTRRDDATA_MASK 0x000000FF 237#define CCB_SMB_MSTRRDDATA_SHIFT 0 238 239#define CCB_SMB_SLVDATAWR_REG 0x48 240 241#define CCB_SMB_SLVWRSTS_MASK 0x80000000 242#define CCB_SMB_SLVWRSTS_SHIFT 31 243 244#define CCB_SMB_SLVWRDATA_MASK 0x000000FF 245#define CCB_SMB_SLVWRDATA_SHIFT 0 246 247#define CCB_SMB_SLVDATARD_REG 0x4C 248 249#define CCB_SMB_SLVRDSTS_MASK 0xC0000000 250#define CCB_SMB_SLVRDSTS_SHIFT 30 251 252#define CCB_SMB_SLVRDERRSTS_MASK 0x30000000 253#define CCB_SMB_SLVRDERRSTS_SHIFT 28 254 255#define CCB_SMB_SLVRDDATA_MASK 0x000000FF 256#define CCB_SMB_SLVRDDATA_SHIFT 0 257 258/* --Registers-- */ 259 260/* Transaction error codes defined in Master command register (0x30) */ 261#define MSTR_STS_XACT_SUCCESS 0 262#define MSTR_STS_LOST_ARB 1 263#define MSTR_STS_NACK_FIRST_BYTE 2 264 265/* NACK on a byte other than 266 * the first byte 267 */ 268#define MSTR_STS_NACK_NON_FIRST_BYTE 3 269 270#define MSTR_STS_TTIMEOUT_EXCEEDED 4 271#define MSTR_STS_TX_TLOW_MEXT_EXCEEDED 5 272#define MSTR_STS_RX_TLOW_MEXT_EXCEEDED 6 273 274/* SMBUS protocol values defined in register 0x30 */ 275#define SMBUS_PROT_QUICK_CMD 0 276#define SMBUS_PROT_SEND_BYTE 1 277#define SMBUS_PROT_RECV_BYTE 2 278#define SMBUS_PROT_WR_BYTE 3 279#define SMBUS_PROT_RD_BYTE 4 280#define SMBUS_PROT_WR_WORD 5 281#define SMBUS_PROT_RD_WORD 6 282#define SMBUS_PROT_BLK_WR 7 283#define SMBUS_PROT_BLK_RD 8 284#define SMBUS_PROT_PROC_CALL 9 285#define SMBUS_PROT_BLK_WR_BLK_RD_PROC_CALL 10 286 287/* SMBUS Block speed mode */ 288#define SMBUS_BLOCK_MODE_100 0 289#define SMBUS_BLOCK_MODE_400 1 290 291#define BUS_BUSY_COUNT 100000 /* Number can be changed later */ 292#define IPROC_I2C_INVALID_ADDR 0xFF 293#define IPROC_SMB_MAX_RETRIES 35 294#define I2C_SMBUS_BLOCK_MAX 32 295#define GETREGFLDVAL(regval, mask, startbit) \ 296 (((regval) & (mask)) >> (startbit)) 297 298/* This enum will be used to notify the user of status of a data transfer 299 * request 300 */ 301enum iproc_smb_error_code { 302 I2C_NO_ERR = 0, 303 I2C_TIMEOUT_ERR = 1, 304 305 /* Invalid parameter(s) passed to the driver */ 306 I2C_INVALID_PARAM_ERR = 2, 307 308 /* The driver API was called before the present 309 * transfer was completed 310 */ 311 I2C_OPER_IN_PROGRESS = 3, 312 313 /* Transfer aborted unexpectedly, for example a NACK 314 * received, before last byte was read/written 315 */ 316 I2C_OPER_ABORT_ERR = 4, 317 318 /* Feature or function not supported 319 * (e.g., 10-bit addresses, or clock speeds 320 * other than 100KHz, 400KHz) 321 */ 322 I2C_FUNC_NOT_SUPPORTED = 5, 323}; 324 325/* Structure used to pass information to read/write functions. */ 326struct iproc_xact_info { 327 unsigned char command; 328 unsigned char *data; 329 unsigned int size; 330 unsigned short flags; /* used for specifying PEC, 10-bit addresses */ 331 unsigned char smb_proto; /* SMBus protocol */ 332 unsigned int cmd_valid; /* true if command is valid else false */ 333}; 334 335#endif /* __IPROC_I2C_H__ */ 336