arch/ppc-sam440/i2c/i2c-amcc440.c

   1 /*
   2     Copyright © 2010-2014, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <aros/symbolsets.h>
   7 #include <aros/debug.h>
   8 #include <proto/exec.h>
   9
  10 #include <hidd/i2c.h>
  11
  12 #include <asm/amcc440.h>
  13 #include <asm/io.h>
  14
  15 #include "i2c-amcc440.h"
  16
  17 void METHOD(I2C440, Hidd_I2C, PutBits)
  18 {
  19         /* Put i2c bus into reset state. Mandatory in order to control it manually */
  20         outb(IIC_XTCNTLSS_SRST, (UBYTE *)IIC0_XTCNTLSS);
  21
  22         UBYTE val=0;
  23
  24         val |= (msg->scl ? IIC_DIRECTCNTL_SCLC : 0);
  25         val |= (msg->sda ? IIC_DIRECTCNTL_SDAC : 0);
  26
  27         outb(val, (UBYTE *)IIC0_DIRECTCNTL);
  28 }
  29
  30 void METHOD(I2C440, Hidd_I2C, GetBits)
  31 {
  32         UBYTE val = inb((UBYTE *)IIC0_DIRECTCNTL);
  33
  34     *msg->sda = (val & IIC_DIRECTCNTL_MSDA) != 0;
  35     *msg->scl = (val & IIC_DIRECTCNTL_MSCL) != 0;
  36 }
  37
  38 ADD2LIBS((STRPTR)"i2c.hidd", 0, static struct Library *, I2CBase);