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/*
* (C) Copyright 2012 SAMSUNG Electronics
* Jaehoon Chung <jh80.chung@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __ASM_ARCH_I2C_H
#define __ASM_ARCH_I2C_H
struct i2c_regs {
u32 con;
u32 clkdiv;
u32 mrxaddr;
u32 mrxraddr;
u32 mtxcnt;
u32 mrxcnt;
u32 ien;
u32 ipd;
u32 fcnt;
u32 reserved0[0x37];
u32 txdata[8];
u32 reserved1[0x38];
u32 rxdata[8];
};
/* Control register */
#define I2C_CON_EN (1 << 0)
#define I2C_CON_MOD(mod) ((mod) << 1)
#define I2C_MODE_TX 0x00
#define I2C_MODE_TRX 0x01
#define I2C_MODE_RX 0x02
#define I2C_MODE_RRX 0x03
#define I2C_CON_MASK (3 << 1)
#define I2C_CON_START (1 << 3)
#define I2C_CON_STOP (1 << 4)
#define I2C_CON_LASTACK (1 << 5)
#define I2C_CON_ACTACK (1 << 6)
/* Clock dividor register */
#define I2C_CLKDIV_VAL(divl, divh) \
(((divl) & 0xffff) | (((divh) << 16) & 0xffff0000))
/* the slave address accessed for master rx mode */
#define I2C_MRXADDR_SET(vld, addr) (((vld) << 24) | (addr))
/* the slave register address accessed for master rx mode */
#define I2C_MRXRADDR_SET(vld, raddr) (((vld) << 24) | (raddr))
/* interrupt enable register */
#define I2C_BTFIEN (1 << 0)
#define I2C_BRFIEN (1 << 1)
#define I2C_MBTFIEN (1 << 2)
#define I2C_MBRFIEN (1 << 3)
#define I2C_STARTIEN (1 << 4)
#define I2C_STOPIEN (1 << 5)
#define I2C_NAKRCVIEN (1 << 6)
/* interrupt pending register */
#define I2C_BTFIPD (1 << 0)
#define I2C_BRFIPD (1 << 1)
#define I2C_MBTFIPD (1 << 2)
#define I2C_MBRFIPD (1 << 3)
#define I2C_STARTIPD (1 << 4)
#define I2C_STOPIPD (1 << 5)
#define I2C_NAKRCVIPD (1 << 6)
#define I2C_IPD_ALL_CLEAN 0x7f
#endif
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