| /* |
| * (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 |
