workbench/devs/AHI/Drivers/EMU10kx/emu10kx-ac97.c

   1 /*
   2      emu10kx.audio - AHI driver for SoundBlaster Live! series
   3      Copyright (C) 2002-2005 Martin Blom <martin@blom.org>
   4
   5      This program is free software; you can redistribute it and/or
   6      modify it under the terms of the GNU General Public License
   7      as published by the Free Software Foundation; either version 2
   8      of the License, or (at your option) any later version.
   9
  10      This program is distributed in the hope that it will be useful,
  11      but WITHOUT ANY WARRANTY; without even the implied warranty of
  12      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13      GNU General Public License for more details.
  14
  15      You should have received a copy of the GNU General Public License
  16      along with this program; if not, write to the Free Software
  17      Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18 */
  19
  20 #include <config.h>
  21
  22 #include <clib/alib_protos.h>
  23 #include <proto/utility.h>
  24
  25 #include "library.h"
  26 #include "8010.h"
  27 #include "hwaccess.h"
  28
  29 static ULONG dsp_register[] = {
  30   /* Input volume GPR */
  31   VOL_AHI_FRONT_L,
  32   VOL_AHI_FRONT_R,
  33   VOL_AHI_REAR_L,
  34   VOL_AHI_REAR_R,
  35   VOL_AHI_SURROUND_L,
  36   VOL_AHI_SURROUND_R,
  37   VOL_AHI_CENTER,
  38   VOL_AHI_LFE,
  39
  40   VOL_SPDIF_CD_L,
  41   VOL_SPDIF_CD_R,
  42   VOL_SPDIF_IN_L,
  43   VOL_SPDIF_IN_R,
  44
  45   /* Output volume GPR */
  46   VOL_SPDIF_FRONT_L,
  47   VOL_SPDIF_FRONT_R,
  48   VOL_SPDIF_REAR_L,
  49   VOL_SPDIF_REAR_R,
  50   VOL_SPDIF_SURROUND_L,
  51   VOL_SPDIF_SURROUND_R,
  52   VOL_SPDIF_CENTER,
  53   VOL_SPDIF_LFE,
  54
  55   VOL_ANALOG_FRONT_L,
  56   VOL_ANALOG_FRONT_R,
  57   VOL_ANALOG_REAR_L,
  58   VOL_ANALOG_REAR_R,
  59   VOL_ANALOG_SURROUND_L,
  60   VOL_ANALOG_SURROUND_R,
  61   VOL_ANALOG_CENTER,
  62   VOL_ANALOG_LFE,
  63
  64   /* AHI_FRONT-to-rear GPR */
  65   VOL_FRONT_REAR_L,
  66   VOL_FRONT_REAR_R,
  67
  68   /* AHI_SURROUND-to-rear GPR */
  69   VOL_SURROUND_REAR_L,
  70   VOL_SURROUND_REAR_R,
  71
  72   /* AHI_FRONT-to-center and AHI_FRONT-to-LFE GPRs */
  73   VOL_FRONT_CENTER,
  74   VOL_FRONT_LFE
  75 };
  76
  77 /******************************************************************************
  78 ** Read from AC97 register ****************************************************
  79 ******************************************************************************/
  80
  81 ULONG
  82 AC97GetFunc( struct Hook*           hook,
  83              struct EMU10kxBase*    EMU10kxBase,
  84              struct AC97GetMessage* msg )
  85 {
  86   struct DriverBase*  AHIsubBase = (struct DriverBase*) EMU10kxBase;
  87   struct EMU10kxData* dd;
  88
  89   if( msg->CardNum >= (ULONG) EMU10kxBase->cards_found ||
  90       EMU10kxBase->driverdatas[ msg->CardNum ] == NULL )
  91   {
  92     Req( "No valid EMU10kxData for AC97 card %ld.", msg->CardNum );
  93     return ~0UL;
  94   }
  95
  96   dd = EMU10kxBase->driverdatas[ msg->CardNum ];
  97
  98   if (msg->Register >= emu10kx_dsp_first &&
  99       msg->Register < emu10kx_dsp_last) {
 100 #if 0
 101     ULONG reg = dsp_register[msg->Register - emu10kx_dsp_first];
 102 #endif
 103
 104     // Reading is not supported yet ...
 105     return ~0UL;
 106   }
 107   else {
 108     return emu10k1_readac97( &dd->card, msg->Register );
 109   }
 110 }
 111
 112
 113 /******************************************************************************
 114 ** Write to AC97 register *****************************************************
 115 ******************************************************************************/
 116
 117 VOID
 118 AC97SetFunc( struct Hook*           hook,
 119              struct EMU10kxBase*    EMU10kxBase,
 120              struct AC97SetMessage* msg )
 121 {
 122   struct DriverBase*  AHIsubBase = (struct DriverBase*) EMU10kxBase;
 123   struct EMU10kxData* dd;
 124
 125   if( msg->CardNum >= (ULONG) EMU10kxBase->cards_found ||
 126       EMU10kxBase->driverdatas[ msg->CardNum ] == NULL )
 127   {
 128     Req( "No valid EMU10kxData for AC97 card %ld.", msg->CardNum );
 129     return;
 130   }
 131
 132   dd = EMU10kxBase->driverdatas[ msg->CardNum ];
 133
 134   if (msg->Register >= emu10kx_dsp_first &&
 135       msg->Register < emu10kx_dsp_last) {
 136     ULONG reg = dsp_register[msg->Register - emu10kx_dsp_first];
 137
 138     emu10k1_set_volume_gpr( &dd->card, reg, 100, VOL_5BIT);
 139   }
 140   else {
 141     emu10k1_writeac97( &dd->card, msg->Register, msg->Value );
 142   }
 143 }