tda9885.c   [plain text]

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

#include "xf86.h"
#include "xf86i2c.h"
#include "tda9885.h"
#include "i2c_def.h"


TDA9885Ptr Detect_tda9885(I2CBusPtr b, I2CSlaveAddr addr)
{
  TDA9885Ptr t;
  I2CByte a;
  
  t = xcalloc(1, sizeof(TDA9885Rec));
  if(t == NULL) return NULL;
  switch(addr)
  {
      case TDA9885_ADDR_1:
      case TDA9885_ADDR_2:
      case TDA9885_ADDR_3:
      case TDA9885_ADDR_4:
	  t->d.DevName = "TDA9885 Alignment-free IF-PLL";
	  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))
  {
     xfree(t);
     return NULL;
  }
  
  /* set default parameters */
  if(!I2CDevInit(&(t->d)))
  {
     xfree(t);
     return NULL;
  }

  return t;  
}

Bool tda9885_init(TDA9885Ptr t)
{
  t->forced_mute_audio=1;
  return TRUE;
}

void tda9885_getstatus(TDA9885Ptr t)
{
CARD8 value;

I2C_WriteRead(&(t->d), NULL, 0, &value, 1); 
t->after_reset=value & 1;
t->afc_status=(value >> 1) & 0xf;
t->fm_carrier=(value>>5)& 1;
t->vif_level=(value >>6) & 1;
t->afc_win=(value >> 7)&1;
}

void tda9885_setparameters(TDA9885Ptr t)
{
CARD8 data[4];

data[0]=0;  /* start with subaddress 0 */
data[1]=(t->sound_trap & 1) |
	((t->auto_mute_fm &1)<<1) |
	((t->carrier_mode &1)<<2) |
	((t->modulation &3)<<3) |
	((t->forced_mute_audio &1)<<5) |
	((t->port1 & 1)<<6) |
	((t->port2 &1)<<7);         /* B data */
data[2]=(t->top_adjustment & 0x1f) |
	((t->deemphasis & 0x3)<<5) |
	((t->audio_gain & 1) << 7);  /* C data */
data[3]=(t->standard_sound_carrier & 0x3) |
	((t->standard_video_if & 0x07)<<2) |
	((t->minimum_gain & 0x01)<<5) |
	((t->gating & 0x01)<<6) |
	((t->vif_agc & 0x01)<<7);   /* E data */

I2C_WriteRead(&(t->d), data, 4, NULL, 0); 

xf86DrvMsg(t->d.pI2CBus->scrnIndex,X_INFO,"TDA9885 setparam: B data: %x, C data: %x, E data: %x\n", data[1], data[2], data[3]);
}

void tda9885_dumpstatus(TDA9885Ptr t)
{
xf86DrvMsg(t->d.pI2CBus->scrnIndex,X_INFO,"TDA9885 status: after_reset=%d afc_status=%d (%3.1f kHz off) fm_carrier=%d vif_level=%d afc_win=%d %s\n",
		t->after_reset, t->afc_status, 
		(t->afc_status<8)?-12.5-t->afc_status*25.0:-12.5+(16-t->afc_status)*25.0,
		t->fm_carrier, t->vif_level, t->afc_win, t->afc_win?"VCO in": "VCO out");
}