LXR uboot/arch/arm/include/asm/arch-rockchip/i2c.h

   1/*
   2 * (C) Copyright 2012 SAMSUNG Electronics
   3 * Jaehoon Chung <jh80.chung@samsung.com>
   4 *
   5 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7
   8#ifndef __ASM_ARCH_I2C_H
   9#define __ASM_ARCH_I2C_H
  10
  11struct i2c_regs {
  12        u32 con;
  13        u32 clkdiv;
  14        u32 mrxaddr;
  15        u32 mrxraddr;
  16        u32 mtxcnt;
  17        u32 mrxcnt;
  18        u32 ien;
  19        u32 ipd;
  20        u32 fcnt;
  21        u32 reserved0[0x37];
  22        u32 txdata[8];
  23        u32 reserved1[0x38];
  24        u32 rxdata[8];
  25};
  26
  27/* Control register */
  28#define I2C_CON_EN              (1 << 0)
  29#define I2C_CON_MOD(mod)        ((mod) << 1)
  30#define I2C_MODE_TX             0x00
  31#define I2C_MODE_TRX            0x01
  32#define I2C_MODE_RX             0x02
  33#define I2C_MODE_RRX            0x03
  34#define I2C_CON_MASK            (3 << 1)
  35
  36#define I2C_CON_START           (1 << 3)
  37#define I2C_CON_STOP            (1 << 4)
  38#define I2C_CON_LASTACK         (1 << 5)
  39#define I2C_CON_ACTACK          (1 << 6)
  40
  41/* Clock dividor register */
  42#define I2C_CLKDIV_VAL(divl, divh) \
  43        (((divl) & 0xffff) | (((divh) << 16) & 0xffff0000))
  44
  45/* the slave address accessed  for master rx mode */
  46#define I2C_MRXADDR_SET(vld, addr)      (((vld) << 24) | (addr))
  47
  48/* the slave register address accessed  for master rx mode */
  49#define I2C_MRXRADDR_SET(vld, raddr)    (((vld) << 24) | (raddr))
  50
  51/* interrupt enable register */
  52#define I2C_BTFIEN              (1 << 0)
  53#define I2C_BRFIEN              (1 << 1)
  54#define I2C_MBTFIEN             (1 << 2)
  55#define I2C_MBRFIEN             (1 << 3)
  56#define I2C_STARTIEN            (1 << 4)
  57#define I2C_STOPIEN             (1 << 5)
  58#define I2C_NAKRCVIEN           (1 << 6)
  59
  60/* interrupt pending register */
  61#define I2C_BTFIPD              (1 << 0)
  62#define I2C_BRFIPD              (1 << 1)
  63#define I2C_MBTFIPD             (1 << 2)
  64#define I2C_MBRFIPD             (1 << 3)
  65#define I2C_STARTIPD            (1 << 4)
  66#define I2C_STOPIPD             (1 << 5)
  67#define I2C_NAKRCVIPD           (1 << 6)
  68#define I2C_IPD_ALL_CLEAN       0x7f
  69
  70#endif
  71