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oss_envy24/envy24_ews88d.c

Card specific routines for Terratec EWS88D.

Description

This file is part of Open Sound System.

Copyright (C) 4Front Technologies 1996-2008.

This this source file is released under GPL v2 license (no other versions). See the COPYING file included in the main directory of this source distribution for the license terms and conditions. 


#include "oss_config.h"
#include "ac97.h"
#include "envy24.h"

#if 0
# define PRT_STATUS(v) outb(v&0xff, 0x378)
#else
# define PRT_STATUS(v)
#endif

/* PCF8575 pin assignment  (default 0xffff) */
#define PCF_SPDIN_SELECT	0x0001	/* 0=optical 1=coax */
#define PCF_OPTOUT		0x0002	/* 0=SPDIF 1=ADAT */
#define PCF_CLOCKSRC		0x0004	/* 0=ADAT 1=SPDIF */
#define PCF_ADATEN		0x0008	/* 0=ADAT disabled 1=ADAT enabled */
#define PCF_ADATLOOP_		0x0010	/* 0=ADAT in->out loop, 1=no loop */
#define PCF_CS8414_ERF_		0x0020	/* Inverted CS8414 ERF */
#define PCF_SPDIF_ERR		0x0040	/* OR'ed from CS8414 E0..E2 */
#define PCF_ADAT_ERROR		0x0080	/* ADAT error input */

extern int envy24_gain_sliders;
extern int envy24_virtualout;
extern int envy24_zerolatency;	/* Testing in progress */

Terratec stuff

Function : IIC_GetSDA ------------------------------------------------------------------------------- Description : Returns : unsigned char -> Parameters : unsigned long dwPortAddr -> ------------------------------------------------------------------------------- Notes : ============================================================================= 

static __inline__ unsigned char
IIC_GetSDA (envy24_devc * devc, unsigned long dwPortAddr)
{

  unsigned char bReg, bSDA;

  /* FMB TEST: RW line */
  /* set write mask */
  bReg = ~(0x08);		/* writeable */
  envy24_write_cci (devc, 0x21, bReg);

  /* set RW line LOW */
  bReg = 0;			/* writeable */
  envy24_write_cci (devc, 0x20, bReg);

  /* Set direction: SDA to input and SCL to output */
  bReg = envy24_read_cci (devc, 0x22);
  bReg |= 0x20;			/* SCL output = 1 */
  bReg &= ~0x10;		/* SDA input  = 0 */
  envy24_write_cci (devc, 0x22, bReg);

  /* Get SDA line state */
  bSDA = envy24_read_cci (devc, 0x20);

  /* set RW line HIGH */
  bReg = 0x08;			/* writeable */
  envy24_write_cci (devc, 0x20, bReg);

  return 1;
  /* return ((bSDA & 0x10) == 0x10); */

}

Function : IIC_SetIic ------------------------------------------------------------------------------- Description : Returns : void -> Parameters : unsigned int dwPortAddr -> : unsigned char fSDA -> : unsigned char fSCL -> ------------------------------------------------------------------------------- Notes : ============================================================================= 

static __inline__ void
IIC_SetIic (envy24_devc * devc, unsigned int dwPortAddr, unsigned char fSDA,
	    unsigned char fSCL)
{
  unsigned char bReg;

  /* Set direction: SDA and SCL to output */
  bReg = envy24_read_cci (devc, 0x22);
  bReg |= (0x20 | 0x10);	/* 1 -> output */
  envy24_write_cci (devc, 0x22, bReg);

  /* set write mask */
  bReg = ~(0x20 | 0x10);	/* writeable */
  envy24_write_cci (devc, 0x21, bReg);

  /* Set line state */
  /* FMB TEST: RW line */
  bReg = 0x08;
/*	bReg = 0; */
  if (fSDA)
    bReg += 0x10;
  if (fSCL)
    bReg += 0x20;
  envy24_write_cci (devc, 0x20, bReg);

}

Function : IIC_Start ------------------------------------------------------------------------------- Description : Returns : void -> Parameters : unsigned int dwPortAddr -> ------------------------------------------------------------------------------- Notes : ============================================================================= 

static __inline__ void
IIC_Start (envy24_devc * devc, unsigned int dwPortAddr)
{
  /* falling edge of SDA while SCL is HIGH */
  IIC_SetIic (devc, dwPortAddr, 1, 1);
  IIC_SetIic (devc, dwPortAddr, 0, 1);
}

Function : IIC_Stop ------------------------------------------------------------------------------- Description : Returns : void -> Parameters : unsigned int dwPortAddr -> ------------------------------------------------------------------------------- Notes : ============================================================================= 

static __inline__ void
IIC_Stop (envy24_devc * devc, unsigned int dwPortAddr)
{
  /* rising edge of SDA while SCL is HIGH */
  IIC_SetIic (devc, dwPortAddr, 0, 1);
  IIC_SetIic (devc, dwPortAddr, 1, 1);
}

Function : IIC_SendByte ------------------------------------------------------------------------------- Description : Returns : unsigned char -> Parameters : unsigned int dwPortAddr -> : unsigned char bByte -> ------------------------------------------------------------------------------- Notes : ============================================================================= 

/*__inline  */
static unsigned char
IIC_SendByte (envy24_devc * devc, unsigned int dwPortAddr,
	      unsigned char bByte)
{
  unsigned char bDataBit, bAck;
  int i;

  for (i = 7; i >= 0; i--)	/* send byte (MSB first) */
    {
      bDataBit = (bByte >> i) & 0x01;

      IIC_SetIic (devc, dwPortAddr, bDataBit, 0);
      IIC_SetIic (devc, dwPortAddr, bDataBit, 1);
    }				/* end for i */

  IIC_SetIic (devc, dwPortAddr, 1, 0);

  /* Get acknowledge */
  IIC_SetIic (devc, dwPortAddr, 1, 1);
  bAck = IIC_GetSDA (devc, dwPortAddr);
  /* FMB this is a start condition but never mind */
  IIC_SetIic (devc, dwPortAddr, 0, 0);
  return 1;
  /* return (!bAck); *//* bAck = 0 --> success */
}

static unsigned char
IIC_WriteWord (envy24_devc * devc, int dwPortAddr, unsigned char bIicAddress,
	       unsigned short bByte)
{
  IIC_Start (devc, dwPortAddr);

  /* send IIC address and data byte */
  if (!IIC_SendByte (devc, dwPortAddr, bIicAddress))
    {
      cmn_err (CE_CONT, "IIC_SendByte 1 failed\n");
      goto FAILED;
    }
  if (!IIC_SendByte (devc, dwPortAddr, bByte & 0xff))
    {
      cmn_err (CE_CONT, "IIC_SendByte 3 failed\n");
      goto FAILED;
    }
  if (!IIC_SendByte (devc, dwPortAddr, (bByte >> 8) & 0xff))
    {
      cmn_err (CE_CONT, "IIC_SendByte 2 failed\n");
      goto FAILED;
    }

  IIC_Stop (devc, dwPortAddr);
  return 1;

FAILED:
  IIC_Stop (devc, dwPortAddr);
  return 0;
}

static void
ews88d_set_pcf8575 (envy24_devc * devc, unsigned short d)
{
  if (!IIC_WriteWord (devc, devc->ccs_base, 0x40, d))
    {
      cmn_err (CE_CONT, "IIC_WriteWord failed\n");
    }
  devc->gpio_tmp = d;
}

static void
ews88d_card_init (envy24_devc * devc)
{
  ews88d_set_pcf8575 (devc, 0xffff);
}

static void
set_ews88d_speed (envy24_devc * devc)
{
  int tmp;

  tmp = devc->speedbits;

  switch (devc->syncsource)
    {
    case SYNC_INTERNAL:
      OUTB (devc->osdev, tmp, devc->mt_base + 0x01);
      break;

    case SYNC_SPDIF:
      tmp |= 0x10;
      OUTB (devc->osdev, tmp, devc->mt_base + 0x01);
      devc->gpio_tmp &= ~PCF_CLOCKSRC;
      ews88d_set_pcf8575 (devc, devc->gpio_tmp);
      break;

    case SYNC_WCLOCK:
      tmp |= 0x10;
      OUTB (devc->osdev, tmp, devc->mt_base + 0x01);
      devc->gpio_tmp |= PCF_CLOCKSRC;
      ews88d_set_pcf8575 (devc, devc->gpio_tmp);
      break;
    }

  if (devc->speed > 48000)
    {
      devc->gpio_tmp &= ~PCF_ADATEN;
      ews88d_set_pcf8575 (devc, devc->gpio_tmp);
    }
  else
    {
      devc->gpio_tmp |= PCF_ADATEN;
      ews88d_set_pcf8575 (devc, devc->gpio_tmp);
    }
}

static int
ews88d_mixer_set (int dev, int ctrl, unsigned int cmd, int value)
{
  envy24_devc *devc = mixer_devs[dev]->devc;

  if (cmd == SNDCTL_MIX_READ)
    switch (ctrl)
      {
      case 1:
	return !!(devc->gpio_tmp & PCF_SPDIN_SELECT);
	break;

      case 2:
	return !!(devc->gpio_tmp & PCF_OPTOUT);
	break;

      case 3:
	return !(devc->gpio_tmp & PCF_ADATLOOP_);
	break;
      }

  if (cmd == SNDCTL_MIX_WRITE)
    switch (ctrl)
      {
      case 1:
	devc->gpio_tmp &= ~PCF_SPDIN_SELECT;
	if (value)
	  devc->gpio_tmp |= PCF_SPDIN_SELECT;
	ews88d_set_pcf8575 (devc, devc->gpio_tmp);
	return !!(devc->gpio_tmp & PCF_SPDIN_SELECT);
	break;

      case 2:
	devc->gpio_tmp &= ~PCF_OPTOUT;
	if (value)
	  devc->gpio_tmp |= PCF_OPTOUT;
	ews88d_set_pcf8575 (devc, devc->gpio_tmp);
	return !!(devc->gpio_tmp & PCF_OPTOUT);
	break;

      case 3:
	devc->gpio_tmp &= ~PCF_ADATLOOP_;
	if (!value)
	  devc->gpio_tmp |= PCF_ADATLOOP_;
	ews88d_set_pcf8575 (devc, devc->gpio_tmp);
	return !(devc->gpio_tmp & PCF_ADATLOOP_);
	break;
      }

  return OSS_EINVAL;
}

static int
ews88d_mix_init (envy24_devc * devc, int dev, int group)
{
  int err;

  if ((group = mixer_ext_create_group (dev, 0, "ENVY24_EWS88D")) < 0)
    return group;

  if ((err = mixer_ext_create_control (dev, group,
				       1, ews88d_mixer_set,
				       MIXT_ENUM,
				       "EWS88D_SPDIN", 2,
				       MIXF_READABLE | MIXF_WRITEABLE)) < 0)
    return err;

  if ((err = mixer_ext_create_control (dev, group,
				       2, ews88d_mixer_set,
				       MIXT_ENUM,
				       "EWS88D_OPTOUT", 2,
				       MIXF_READABLE | MIXF_WRITEABLE)) < 0)
    return err;

  if ((err = mixer_ext_create_control (dev, group,
				       3, ews88d_mixer_set,
				       MIXT_ONOFF,
				       "EWS88D_ADATLOOP", 2,
				       MIXF_READABLE | MIXF_WRITEABLE)) < 0)
    return err;

  return 0;
}

envy24_auxdrv_t ews88d_auxdrv = {
  ews88d_card_init,
  ews88d_mix_init,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  set_ews88d_speed,
  NULL,
  cs8427_spdif_mixer_init
};
Copyright (C) 4Front Technologies, 2007. All rights reserved.

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Copyright (C) 4Front Technologies, 2007. All rights reserved.
Back to index OSS web site