arch/common/hidd.radeon/ati_i2c.c

   1 /*
   2     Copyright © 2004, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include "ati.h"
   7 #include "radeon.h"
   8 #include "radeon_reg.h"
   9 #include "radeon_macros.h"
  10
  11 #include <aros/symbolsets.h>
  12 #include <aros/debug.h>
  13 #include <proto/exec.h>
  14
  15 void METHOD(ATII2C, Hidd_I2C, PutBits)
  16 {
  17     struct ati_staticdata *sd = SD(cl);
  18     ULONG val;
  19
  20     val = INREG(sd->Card.DDCReg) & (ULONG)~(RADEON_GPIO_EN_0 | RADEON_GPIO_EN_1);
  21     val |= (msg->scl ? 0:RADEON_GPIO_EN_1);
  22     val |= (msg->sda ? 0:RADEON_GPIO_EN_0);
  23     OUTREG(sd->Card.DDCReg, val);
  24     val = INREG(sd->Card.DDCReg);
  25 }
  26
  27 void METHOD(ATII2C, Hidd_I2C, GetBits)
  28 {
  29     struct ati_staticdata *sd = SD(cl);
  30
  31     ULONG val = INREG(sd->Card.DDCReg);
  32     *msg->sda = (val & RADEON_GPIO_Y_0) != 0;
  33     *msg->scl = (val & RADEON_GPIO_Y_1) != 0;
  34 }
  35
  36 ADD2LIBS((STRPTR)"i2c.hidd", 0, static struct Library *, I2CBase);