mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 19:10:13 +00:00
956d57a8dd
Add I2C driver support for Broadcom iproc-based socs. Signed-off-by: Arjun Jyothi <arjun.jyothi@broadcom.com> Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com> Signed-off-by: Sheetal Tigadoli <sheetal.tigadoli@broadcom.com> Signed-off-by: Vladimir Olovyannikov <vladimir.olovyannikov@broadcom.com> Reviewed-by: Heiko Schocher <hs@denx.de>
335 lines
12 KiB
C
335 lines
12 KiB
C
/* 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__ */
|