diff options
Diffstat (limited to 'drivers/i2c/iproc_i2c.h')
| -rw-r--r-- | drivers/i2c/iproc_i2c.h | 335 |
1 files changed, 335 insertions, 0 deletions
diff --git a/drivers/i2c/iproc_i2c.h b/drivers/i2c/iproc_i2c.h new file mode 100644 index 0000000000..8c3d84f62b --- /dev/null +++ b/drivers/i2c/iproc_i2c.h @@ -0,0 +1,335 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2018 Broadcom + * + */ + +#ifndef __IPROC_I2C_H__ +#define __IPROC_I2C_H__ + +/* Registers */ +#define CCB_SMB_CFG_REG 0x0 + +#define CCB_SMB_CFG_RST_MASK 0x80000000 +#define CCB_SMB_CFG_RST_SHIFT 31 + +#define CCB_SMB_CFG_SMBEN_MASK 0x40000000 +#define CCB_SMB_CFG_SMBEN_SHIFT 30 + +#define CCB_SMB_CFG_BITBANGEN_MASK 0x20000000 +#define CCB_SMB_CFG_BITBANGEN_SHIFT 29 + +#define CCB_SMB_CFG_EN_NIC_SMBADDR0_MASK 0x10000000 +#define CCB_SMB_CFG_EN_NIC_SMBADDR0_SHIFT 28 + +#define CCB_SMB_CFG_PROMISCMODE_MASK 0x08000000 +#define CCB_SMB_CFG_PROMISCMODE_SHIFT 27 + +#define CCB_SMB_CFG_TSTMPCNTEN_MASK 0x04000000 +#define CCB_SMB_CFG_TSTMPCNTEN_SHIFT 26 + +#define CCB_SMB_CFG_MSTRRTRYCNT_MASK 0x000F0000 +#define CCB_SMB_CFG_MSTRRTRYCNT_SHIFT 16 + +#define CCB_SMB_TIMGCFG_REG 0x4 + +#define CCB_SMB_TIMGCFG_MODE400_MASK 0x80000000 +#define CCB_SMB_TIMGCFG_MODE400_SHIFT 31 + +#define CCB_SMB_TIMGCFG_RNDSLVSTR_MASK 0x7F000000 +#define CCB_SMB_TIMGCFG_RNDSLVSTR_SHIFT 24 + +#define CCB_SMB_TIMGCFG_PERSLVSTR_MASK 0x00FF0000 +#define CCB_SMB_TIMGCFG_PERSLVSTR_SHIFT 16 + +#define CCB_SMB_TIMGCFG_IDLTIME_MASK 0x0000FF00 +#define CCB_SMB_TIMGCFG_IDLTIME_SHIFT 8 + +#define CCB_SMB_ADDR_REG 0x8 + +#define CCB_SMB_EN_NIC_SMBADDR3_MASK 0x80000000 +#define CCB_SMB_EN_NIC_SMBADDR3_SHIFT 31 + +#define CCB_SMB_NIC_SMBADDR3_MASK 0x7F000000 +#define CCB_SMB_NIC_SMBADDR3_SHIFT 24 + +#define CCB_SMB_EN_NIC_SMBADDR2_MASK 0x00800000 +#define CCB_SMB_EN_NIC_SMBADDR2_SHIFT 23 + +#define CCB_SMB_NIC_SMBADDR2_MASK 0x007F0000 +#define CCB_SMB_NIC_SMBADDR2_SHIFT 16 + +#define CCB_SMB_EN_NIC_SMBADDR1_MASK 0x00008000 +#define CCB_SMB_EN_NIC_SMBADDR1_SHIFT 15 + +#define CCB_SMB_NIC_SMBADDR1_MASK 0x00007F00 +#define CCB_SMB_NIC_SMBADDR1_SHIFT 8 + +#define CCB_SMB_EN_NIC_SMBADDR0_MASK 0x00000080 +#define CCB_SMB_EN_NIC_SMBADDR0_SHIFT 7 + +#define CCB_SMB_NIC_SMBADDR0_MASK 0x0000007F +#define CCB_SMB_NIC_SMBADDR0_SHIFT 0 + +#define CCB_SMB_MSTRFIFOCTL_REG 0xC + +#define CCB_SMB_MSTRRXFIFOFLSH_MASK 0x80000000 +#define CCB_SMB_MSTRRXFIFOFLSH_SHIFT 31 + +#define CCB_SMB_MSTRTXFIFOFLSH_MASK 0x40000000 +#define CCB_SMB_MSTRTXFIFOFLSH_SHIFT 30 + +#define CCB_SMB_MSTRRXPKTCNT_MASK 0x007F0000 +#define CCB_SMB_MSTRRXPKTCNT_SHIFT 16 + +#define CCB_SMB_MSTRRXFIFOTHR_MASK 0x00003F00 +#define CCB_SMB_MSTRRXFIFOTHR_SHIFT 8 + +#define CCB_SMB_SLVFIFOCTL_REG 0x10 + +#define CCB_SMB_SLVRXFIFOFLSH_MASK 0x80000000 +#define CCB_SMB_SLVRXFIFOFLSH_SHIFT 31 + +#define CCB_SMB_SLVTXFIFOFLSH_MASK 0x40000000 +#define CCB_SMB_SLVTXFIFOFLSH_SHIFT 30 + +#define CCB_SMB_SLVRXPKTCNT_MASK 0x007F0000 +#define CCB_SMB_SLVRXPKTCNT_SHIFT 16 + +#define CCB_SMB_SLVRXFIFOTHR_MASK 0x00003F00 +#define CCB_SMB_SLVRXFIFOTHR_SHIFT 8 + +#define CCB_SMB_BITBANGCTL_REG 0x14 + +#define CCB_SMB_SMBCLKIN_MASK 0x80000000 +#define CCB_SMB_SMBCLKIN_SHIFT 31 + +#define CCB_SMB_SMBCLKOUTEN_MASK 0x40000000 +#define CCB_SMB_SMBCLKOUTEN_SHIFT 30 + +#define CCB_SMB_SMBDATAIN_MASK 0x20000000 +#define CCB_SMB_SMBDATAIN_SHIFT 29 + +#define CCB_SMB_SMBDATAOUTEN_MASK 0x10000000 +#define CCB_SMB_SMBDATAOUTEN_SHIFT 28 + +#define CCB_SMB_MSTRCMD_REG 0x30 + +#define CCB_SMB_MSTRSTARTBUSYCMD_MASK 0x80000000 +#define CCB_SMB_MSTRSTARTBUSYCMD_SHIFT 31 + +#define CCB_SMB_MSTRABORT_MASK 0x40000000 +#define CCB_SMB_MSTRABORT_SHIFT 30 + +#define CCB_SMB_MSTRSTS_MASK 0x0E000000 +#define CCB_SMB_MSTRSTS_SHIFT 25 + +#define CCB_SMB_MSTRSMBUSPROTO_MASK 0x00001E00 +#define CCB_SMB_MSTRSMBUSPROTO_SHIFT 9 + +#define CCB_SMB_MSTRPEC_MASK 0x00000100 +#define CCB_SMB_MSTRPEC_SHIFT 8 + +#define CCB_SMB_MSTRRDBYTECNT_MASK 0x000000FF +#define CCB_SMB_MSTRRDBYTECNT_SHIFT 0 + +#define CCB_SMB_SLVCMD_REG 0x34 + +#define CCB_SMB_SLVSTARTBUSYCMD_MASK 0x80000000 +#define CCB_SMB_SLVSTARTBUSYCMD_SHIFT 31 + +#define CCB_SMB_SLVABORT_MASK 0x40000000 +#define CCB_SMB_SLVABORT_SHIFT 30 + +#define CCB_SMB_SLVSTS_MASK 0x03800000 +#define CCB_SMB_SLVSTS_SHIFT 23 + +#define CCB_SMB_SLVPEC_MASK 0x00000100 +#define CCB_SMB_SLVPEC_SHIFT 8 + +#define CCB_SMB_EVTEN_REG 0x38 + +#define CCB_SMB_MSTRRXFIFOFULLEN_MASK 0x80000000 +#define CCB_SMB_MSTRRXFIFOFULLEN_SHIFT 31 + +#define CCB_SMB_MSTRRXFIFOTHRHITEN_MASK 0x40000000 +#define CCB_SMB_MSTRRXFIFOTHRHITEN_SHIFT 30 + +#define CCB_SMB_MSTRRXEVTEN_MASK 0x20000000 +#define CCB_SMB_MSTRRXEVTEN_SHIFT 29 + +#define CCB_SMB_MSTRSTARTBUSYEN_MASK 0x10000000 +#define CCB_SMB_MSTRSTARTBUSYEN_SHIFT 28 + +#define CCB_SMB_MSTRTXUNDEN_MASK 0x08000000 +#define CCB_SMB_MSTRTXUNDEN_SHIFT 27 + +#define CCB_SMB_SLVRXFIFOFULLEN_MASK 0x04000000 +#define CCB_SMB_SLVRXFIFOFULLEN_SHIFT 26 + +#define CCB_SMB_SLVRXFIFOTHRHITEN_MASK 0x02000000 +#define CCB_SMB_SLVRXFIFOTHRHITEN_SHIFT 25 + +#define CCB_SMB_SLVRXEVTEN_MASK 0x01000000 +#define CCB_SMB_SLVRXEVTEN_SHIFT 24 + +#define CCB_SMB_SLVSTARTBUSYEN_MASK 0x00800000 +#define CCB_SMB_SLVSTARTBUSYEN_SHIFT 23 + +#define CCB_SMB_SLVTXUNDEN_MASK 0x00400000 +#define CCB_SMB_SLVTXUNDEN_SHIFT 22 + +#define CCB_SMB_SLVRDEVTEN_MASK 0x00200000 +#define CCB_SMB_SLVRDEVTEN_SHIFT 21 + +#define CCB_SMB_EVTSTS_REG 0x3C + +#define CCB_SMB_MSTRRXFIFOFULLSTS_MASK 0x80000000 +#define CCB_SMB_MSTRRXFIFOFULLSTS_SHIFT 31 + +#define CCB_SMB_MSTRRXFIFOTHRHITSTS_MASK 0x40000000 +#define CCB_SMB_MSTRRXFIFOTHRHITSTS_SHIFT 30 + +#define CCB_SMB_MSTRRXEVTSTS_MASK 0x20000000 +#define CCB_SMB_MSTRRXEVTSTS_SHIFT 29 + +#define CCB_SMB_MSTRSTARTBUSYSTS_MASK 0x10000000 +#define CCB_SMB_MSTRSTARTBUSYSTS_SHIFT 28 + +#define CCB_SMB_MSTRTXUNDSTS_MASK 0x08000000 +#define CCB_SMB_MSTRTXUNDSTS_SHIFT 27 + +#define CCB_SMB_SLVRXFIFOFULLSTS_MASK 0x04000000 +#define CCB_SMB_SLVRXFIFOFULLSTS_SHIFT 26 + +#define CCB_SMB_SLVRXFIFOTHRHITSTS_MASK 0x02000000 +#define CCB_SMB_SLVRXFIFOTHRHITSTS_SHIFT 25 + +#define CCB_SMB_SLVRXEVTSTS_MASK 0x01000000 +#define CCB_SMB_SLVRXEVTSTS_SHIFT 24 + +#define CCB_SMB_SLVSTARTBUSYSTS_MASK 0x00800000 +#define CCB_SMB_SLVSTARTBUSYSTS_SHIFT 23 + +#define CCB_SMB_SLVTXUNDSTS_MASK 0x00400000 +#define CCB_SMB_SLVTXUNDSTS_SHIFT 22 + +#define CCB_SMB_SLVRDEVTSTS_MASK 0x00200000 +#define CCB_SMB_SLVRDEVTSTS_SHIFT 21 + +#define CCB_SMB_MSTRDATAWR_REG 0x40 + +#define CCB_SMB_MSTRWRSTS_MASK 0x80000000 +#define CCB_SMB_MSTRWRSTS_SHIFT 31 + +#define CCB_SMB_MSTRWRDATA_MASK 0x000000FF +#define CCB_SMB_MSTRWRDATA_SHIFT 0 + +#define CCB_SMB_MSTRDATARD_REG 0x44 + +#define CCB_SMB_MSTRRDSTS_MASK 0xC0000000 +#define CCB_SMB_MSTRRDSTS_SHIFT 30 + +#define CCB_SMB_MSTRRDPECERR_MASK 0x20000000 +#define CCB_SMB_MSTRRDPECERR_SHIFT 29 + +#define CCB_SMB_MSTRRDDATA_MASK 0x000000FF +#define CCB_SMB_MSTRRDDATA_SHIFT 0 + +#define CCB_SMB_SLVDATAWR_REG 0x48 + +#define CCB_SMB_SLVWRSTS_MASK 0x80000000 +#define CCB_SMB_SLVWRSTS_SHIFT 31 + +#define CCB_SMB_SLVWRDATA_MASK 0x000000FF +#define CCB_SMB_SLVWRDATA_SHIFT 0 + +#define CCB_SMB_SLVDATARD_REG 0x4C + +#define CCB_SMB_SLVRDSTS_MASK 0xC0000000 +#define CCB_SMB_SLVRDSTS_SHIFT 30 + +#define CCB_SMB_SLVRDERRSTS_MASK 0x30000000 +#define CCB_SMB_SLVRDERRSTS_SHIFT 28 + +#define CCB_SMB_SLVRDDATA_MASK 0x000000FF +#define CCB_SMB_SLVRDDATA_SHIFT 0 + +/* --Registers-- */ + +/* Transaction error codes defined in Master command register (0x30) */ +#define MSTR_STS_XACT_SUCCESS 0 +#define MSTR_STS_LOST_ARB 1 +#define MSTR_STS_NACK_FIRST_BYTE 2 + +/* NACK on a byte other than + * the first byte + */ +#define MSTR_STS_NACK_NON_FIRST_BYTE 3 + +#define MSTR_STS_TTIMEOUT_EXCEEDED 4 +#define MSTR_STS_TX_TLOW_MEXT_EXCEEDED 5 +#define MSTR_STS_RX_TLOW_MEXT_EXCEEDED 6 + +/* SMBUS protocol values defined in register 0x30 */ +#define SMBUS_PROT_QUICK_CMD 0 +#define SMBUS_PROT_SEND_BYTE 1 +#define SMBUS_PROT_RECV_BYTE 2 +#define SMBUS_PROT_WR_BYTE 3 +#define SMBUS_PROT_RD_BYTE 4 +#define SMBUS_PROT_WR_WORD 5 +#define SMBUS_PROT_RD_WORD 6 +#define SMBUS_PROT_BLK_WR 7 +#define SMBUS_PROT_BLK_RD 8 +#define SMBUS_PROT_PROC_CALL 9 +#define SMBUS_PROT_BLK_WR_BLK_RD_PROC_CALL 10 + +/* SMBUS Block speed mode */ +#define SMBUS_BLOCK_MODE_100 0 +#define SMBUS_BLOCK_MODE_400 1 + +#define BUS_BUSY_COUNT 100000 /* Number can be changed later */ +#define IPROC_I2C_INVALID_ADDR 0xFF +#define IPROC_SMB_MAX_RETRIES 35 +#define I2C_SMBUS_BLOCK_MAX 32 +#define GETREGFLDVAL(regval, mask, startbit) \ + (((regval) & (mask)) >> (startbit)) + +/* This enum will be used to notify the user of status of a data transfer + * request + */ +enum iproc_smb_error_code { + I2C_NO_ERR = 0, + I2C_TIMEOUT_ERR = 1, + + /* Invalid parameter(s) passed to the driver */ + I2C_INVALID_PARAM_ERR = 2, + + /* The driver API was called before the present + * transfer was completed + */ + I2C_OPER_IN_PROGRESS = 3, + + /* Transfer aborted unexpectedly, for example a NACK + * received, before last byte was read/written + */ + I2C_OPER_ABORT_ERR = 4, + + /* Feature or function not supported + * (e.g., 10-bit addresses, or clock speeds + * other than 100KHz, 400KHz) + */ + I2C_FUNC_NOT_SUPPORTED = 5, +}; + +/* Structure used to pass information to read/write functions. */ +struct iproc_xact_info { + unsigned char command; + unsigned char *data; + unsigned int size; + unsigned short flags; /* used for specifying PEC, 10-bit addresses */ + unsigned char smb_proto; /* SMBus protocol */ + unsigned int cmd_valid; /* true if command is valid else false */ +}; + +#endif /* __IPROC_I2C_H__ */ |