xref: /xsrc/external/mit/xorg-server.old/dist/hw/xfree86/i2c/tda9850.c

#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif

#include "xf86.h"
#include "xf86i2c.h"
#include "tda9850.h"
#include "i2c_def.h"

#define TDA9850(a,b)	{ \
		data[0]=a; \
		data[1]=b; \
		I2C_WriteRead(&(t->d), data, 2, NULL, 0); \
		}

TDA9850Ptr Detect_tda9850(I2CBusPtr b, I2CSlaveAddr addr)
{
  TDA9850Ptr t;
  I2CByte a;

  t = calloc(1, sizeof(TDA9850Rec));
  if(t == NULL) return NULL;
  switch(addr)
  {
      case TDA9850_ADDR_1:
	  t->d.DevName = "TDA9850 BTSC Stereo+SAP Audio Processor";
	  break;
      default:
          t->d.DevName = "Generic TDAxxxx";
	  break;
  }
  t->d.SlaveAddr = addr;
  t->d.pI2CBus = b;
  t->d.NextDev = NULL;
  t->d.StartTimeout = b->StartTimeout;
  t->d.BitTimeout = b->BitTimeout;
  t->d.AcknTimeout = b->AcknTimeout;
  t->d.ByteTimeout = b->ByteTimeout;

  if(!I2C_WriteRead(&(t->d), NULL, 0, &a, 1))
  {
     free(t);
     return NULL;
  }

  /* set default parameters */
  if(!I2CDevInit(&(t->d)))
  {
     free(t);
     return NULL;
  }

  return t;
}

Bool tda9850_init(TDA9850Ptr t)
{
  t->stereo = 1;
  t->sap = 0;
  t->mute = TRUE;
  t->sap_mute = TRUE;
  tda9850_setaudio(t);
  return TRUE;
}

void tda9850_setaudio(TDA9850Ptr t)
{
CARD8 data[2];

if(t->mux==2)
{
   TDA9850(0x04,0x0F); TDA9850(0x05,0x0F); TDA9850(0x06, 0x58);
   TDA9850(0x07,0x07); TDA9850(0x08,0x00);
   TDA9850(0x09,0x00); TDA9850(0x0A,0x03);
} else
{
  TDA9850(0x04,0x07); TDA9850(0x05,0x07);
  TDA9850(0x06,0x58); TDA9850(0x07,0x07);
  TDA9850(0x08,0x10); TDA9850(0x09,0x10);
  TDA9850(0x0A,0x03);
}

TDA9850(0x06,(t->stereo<<6)|(t->sap<<7)|(t->mute?0x8:0)|(t->sap_mute?0x10:0x0));
}

void tda9850_mute(TDA9850Ptr t, Bool mute)
{
CARD8 data[2];

xf86DrvMsg(t->d.pI2CBus->scrnIndex, X_INFO, "tda9850_mute %s\n", mute ? "on" : "off");
t->mute = mute;

TDA9850(0x06,(t->stereo<<6)|(t->sap<<7)|(t->mute?0x8:0x0)|(t->sap_mute?0x10:0x0));
}

void tda9850_sap_mute(TDA9850Ptr t, Bool sap_mute)
{
CARD8 data[2];

xf86DrvMsg(t->d.pI2CBus->scrnIndex, X_INFO, "tda9850_sap_mute %s\n", sap_mute ? "on" : "off");
t->sap_mute = sap_mute;

TDA9850(0x06,(t->stereo<<6)|(t->sap<<7)|(t->mute?0x8:0x0)|(t->sap_mute?0x10:0x0));
}

CARD16 tda9850_getstatus(TDA9850Ptr t)
{
CARD16 status;

I2C_WriteRead(&(t->d), NULL, 0, (I2CByte *)&status, 2);
return status;
}