arch/arm/include/asm/arch-sc9630/i2c_reg_v0.h

   1 /******************************************************************************
   2  ** File Name:      I2C_reg_v0.h                                                 *
   3  ** Author:         liuhao                                                   *
   4  ** DATE:           06/28/2010                                                *
   5  ** Copyright:      2010 Spreatrum, Incoporated. All Rights Reserved.         *
   6  ** Description:    This file define the basic hw interfaces of I2C device.      *
   7  ******************************************************************************
   8
   9  ******************************************************************************
  10  **                        Edit History                                       *
  11  ** ------------------------------------------------------------------------- *
  12  ** DATE           NAME             DESCRIPTION                               *
  13  ** 06/28/2010     liuhao     Create.                                   *
  14  ******************************************************************************/
  15 #ifndef _I2C_REG_V0_H_
  16 #define _I2C_REG_V0_H_
  17 /*----------------------------------------------------------------------------*
  18  **                         Dependencies                                      *
  19  **------------------------------------------------------------------------- */
  20
  21 /**---------------------------------------------------------------------------*
  22  **                             Compiler Flag                                 *
  23  **--------------------------------------------------------------------------*/
  24 #ifdef   __cplusplus
  25 extern   "C"
  26 {
  27 #endif
  28 /**---------------------------------------------------------------------------*
  29 **                               Micro Define                                **
  30 **---------------------------------------------------------------------------*/
  31 /*----------I2C Register----------*/
  32 //I2C_BASE      0x86000000
  33 #define I2C_CTL                         (I2C_BASE + 0x0000)
  34 #define I2C_CMD                         (I2C_BASE + 0x0004)
  35 #define I2C_CLKD0                       (I2C_BASE + 0x0008)
  36 #define I2C_CLKD1                       (I2C_BASE + 0x000C)
  37 #define I2C_RST                         (I2C_BASE + 0x0010)
  38 #define I2C_CMD_BUF                     (I2C_BASE + 0x0014)
  39
  40 //The corresponding bit of I2C_CTL register.
  41 #define I2CCTL_INT                      (1 << 0)        //I2c interrupt
  42 #define I2CCTL_ACK                      (1 << 1)        //I2c received ack value
  43 #define I2CCTL_BUSY                     (1 << 2)        //I2c data line value
  44 #define I2CCTL_IE                       (1 << 3)        //I2c interrupt enable
  45 #define I2CCTL_EN                       (1 << 4)        //I2c module enable
  46 #define I2CCTL_CMDBUF_EN                (1 << 5)        //Enable the cmd buffer mode
  47 #define I2CCTL_CMDBUF_EXEC              (1 << 6)        //Start to exec the cmd in the cmd buffer
  48 #define I2CCTL_ST_CMDBUF                (7 << 7)        //The state of  I2c cmd buffer state machine.
  49 #define I2CCTL_CMDBUF_WPTR              (7 << 7)        //I2c command buffer write pointer
  50
  51 //The corresponding bit of I2C_CMD register.
  52 #define I2CCMD_INT_ACK                  (1 << 0)        //I2c interrupt clear bit
  53 #define I2CCMD_TX_ACK                   (1 << 1)        //I2c transmit ack that need to be send
  54 #define I2CCMD_WRITE                    (1 << 2)        //I2c write command
  55 #define I2CCMD_READ                     (1 << 3)        //I2c read command
  56 #define I2CCMD_STOP                     (1 << 4)        //I2c stop command
  57 #define I2CCMD_START                    (1 << 5)        //I2c start command
  58 #define I2CCMD_ACK                      (1 << 6)        //I2c received ack  value
  59 #define I2CCMD_BUS                      (1 << 7)        //I2c busy in exec commands
  60 #define I2CCMD_DATA                     0xFF00          //I2c data received or data need to be transmitted
  61
  62 /**----------------------------------------------------------------------------*
  63 **                         Local Function Prototype                           **
  64 **----------------------------------------------------------------------------*/
  65 //I2C control register
  66 typedef struct i2c_tag
  67 {
  68     VOLATILE uint32 ctl;
  69     VOLATILE uint32 cmd;
  70     VOLATILE uint32 div0;
  71     VOLATILE uint32 div1;
  72     VOLATILE uint32 rst;
  73     VOLATILE uint32 cmd_buf;
  74 } I2C_CTL_REG_T;
  75
  76 /**----------------------------------------------------------------------------*
  77 **                         Compiler Flag                                      **
  78 **----------------------------------------------------------------------------*/
  79 #ifdef   __cplusplus
  80 }
  81 #endif
  82 /**---------------------------------------------------------------------------*/
  83 #endif
  84 // End