269 lines
6.1 KiB
C
269 lines
6.1 KiB
C
/*
|
|
* sound/ics2101.c
|
|
*
|
|
* Driver for the ICS2101 mixer of GUS v3.7.
|
|
*
|
|
* Copyright by Hannu Savolainen 1994
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met: 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer. 2.
|
|
* Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
|
|
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $Id: ics2101.c,v 1.3 1994/08/02 07:40:05 davidg Exp $
|
|
*/
|
|
|
|
#include "sound_config.h"
|
|
#if defined(CONFIGURE_SOUNDCARD) && !defined(EXCLUDE_GUS)
|
|
|
|
#ifdef __FreeBSD__
|
|
#include <machine/ultrasound.h>
|
|
#else
|
|
#include "ultrasound.h"
|
|
#endif
|
|
#include "gus_hw.h"
|
|
|
|
#define MIX_DEVS (SOUND_MASK_MIC|SOUND_MASK_LINE| \
|
|
SOUND_MASK_SYNTH| \
|
|
SOUND_MASK_CD | SOUND_MASK_VOLUME)
|
|
|
|
extern int gus_base;
|
|
static int volumes[ICS_MIXDEVS];
|
|
static int left_fix[ICS_MIXDEVS] =
|
|
{1, 1, 1, 2, 1, 2};
|
|
static int right_fix[ICS_MIXDEVS] =
|
|
{2, 2, 2, 1, 2, 1};
|
|
|
|
static int
|
|
scale_vol (int vol)
|
|
{
|
|
#if 1
|
|
/*
|
|
* Experimental volume scaling by Risto Kankkunen.
|
|
* This should give smoother volume response than just
|
|
* a plain multiplication.
|
|
*/
|
|
int e;
|
|
|
|
if (vol < 0)
|
|
vol = 0;
|
|
if (vol > 100)
|
|
vol = 100;
|
|
vol = (31 * vol + 50) / 100;
|
|
e = 0;
|
|
if (vol)
|
|
{
|
|
while (vol < 16)
|
|
{
|
|
vol <<= 1;
|
|
e--;
|
|
}
|
|
vol -= 16;
|
|
e += 7;
|
|
}
|
|
return ((e << 4) + vol);
|
|
#else
|
|
return ((vol * 127) + 50) / 100;
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
write_mix (int dev, int chn, int vol)
|
|
{
|
|
int *selector;
|
|
unsigned long flags;
|
|
int ctrl_addr = dev << 3;
|
|
int attn_addr = dev << 3;
|
|
|
|
vol = scale_vol (vol);
|
|
|
|
if (chn == CHN_LEFT)
|
|
{
|
|
selector = left_fix;
|
|
ctrl_addr |= 0x00;
|
|
attn_addr |= 0x02;
|
|
}
|
|
else
|
|
{
|
|
selector = right_fix;
|
|
ctrl_addr |= 0x01;
|
|
attn_addr |= 0x03;
|
|
}
|
|
|
|
DISABLE_INTR (flags);
|
|
OUTB (ctrl_addr, u_MixSelect);
|
|
OUTB (selector[dev], u_MixData);
|
|
OUTB (attn_addr, u_MixSelect);
|
|
OUTB ((unsigned char) vol, u_MixData);
|
|
RESTORE_INTR (flags);
|
|
}
|
|
|
|
static int
|
|
set_volumes (int dev, int vol)
|
|
{
|
|
int left = vol & 0x00ff;
|
|
int right = (vol >> 8) & 0x00ff;
|
|
|
|
if (left < 0)
|
|
left = 0;
|
|
if (left > 100)
|
|
left = 100;
|
|
if (right < 0)
|
|
right = 0;
|
|
if (right > 100)
|
|
right = 100;
|
|
|
|
write_mix (dev, CHN_LEFT, left);
|
|
write_mix (dev, CHN_RIGHT, right);
|
|
|
|
vol = left + (right << 8);
|
|
volumes[dev] = vol;
|
|
return vol;
|
|
}
|
|
|
|
static int
|
|
ics2101_mixer_ioctl (int dev, unsigned int cmd, unsigned int arg)
|
|
{
|
|
if (((cmd >> 8) & 0xff) == 'M')
|
|
{
|
|
if (cmd & IOC_IN)
|
|
switch (cmd & 0xff)
|
|
{
|
|
case SOUND_MIXER_RECSRC:
|
|
return gus_default_mixer_ioctl (dev, cmd, arg);
|
|
break;
|
|
|
|
case SOUND_MIXER_MIC:
|
|
return IOCTL_OUT (arg, set_volumes (DEV_MIC, IOCTL_IN (arg)));
|
|
break;
|
|
|
|
case SOUND_MIXER_CD:
|
|
return IOCTL_OUT (arg, set_volumes (DEV_CD, IOCTL_IN (arg)));
|
|
break;
|
|
|
|
case SOUND_MIXER_LINE:
|
|
return IOCTL_OUT (arg, set_volumes (DEV_LINE, IOCTL_IN (arg)));
|
|
break;
|
|
|
|
case SOUND_MIXER_SYNTH:
|
|
return IOCTL_OUT (arg, set_volumes (DEV_GF1, IOCTL_IN (arg)));
|
|
break;
|
|
|
|
case SOUND_MIXER_VOLUME:
|
|
return IOCTL_OUT (arg, set_volumes (DEV_VOL, IOCTL_IN (arg)));
|
|
break;
|
|
|
|
default:
|
|
return RET_ERROR (EINVAL);
|
|
}
|
|
else
|
|
switch (cmd & 0xff) /*
|
|
* Return parameters
|
|
*/
|
|
{
|
|
|
|
case SOUND_MIXER_RECSRC:
|
|
return gus_default_mixer_ioctl (dev, cmd, arg);
|
|
break;
|
|
|
|
case SOUND_MIXER_DEVMASK:
|
|
return IOCTL_OUT (arg, MIX_DEVS);
|
|
break;
|
|
|
|
case SOUND_MIXER_STEREODEVS:
|
|
return IOCTL_OUT (arg, SOUND_MASK_LINE | SOUND_MASK_CD |
|
|
SOUND_MASK_SYNTH | SOUND_MASK_VOLUME |
|
|
SOUND_MASK_MIC);
|
|
break;
|
|
|
|
case SOUND_MIXER_RECMASK:
|
|
return IOCTL_OUT (arg, SOUND_MASK_MIC | SOUND_MASK_LINE);
|
|
break;
|
|
|
|
case SOUND_MIXER_CAPS:
|
|
return IOCTL_OUT (arg, 0);
|
|
break;
|
|
|
|
case SOUND_MIXER_MIC:
|
|
return IOCTL_OUT (arg, volumes[DEV_MIC]);
|
|
break;
|
|
|
|
case SOUND_MIXER_LINE:
|
|
return IOCTL_OUT (arg, volumes[DEV_LINE]);
|
|
break;
|
|
|
|
case SOUND_MIXER_CD:
|
|
return IOCTL_OUT (arg, volumes[DEV_CD]);
|
|
break;
|
|
|
|
case SOUND_MIXER_VOLUME:
|
|
return IOCTL_OUT (arg, volumes[DEV_VOL]);
|
|
break;
|
|
|
|
case SOUND_MIXER_SYNTH:
|
|
return IOCTL_OUT (arg, volumes[DEV_GF1]);
|
|
break;
|
|
|
|
default:
|
|
return RET_ERROR (EINVAL);
|
|
}
|
|
}
|
|
|
|
return RET_ERROR (EINVAL);
|
|
}
|
|
|
|
static struct mixer_operations ics2101_mixer_operations =
|
|
{
|
|
ics2101_mixer_ioctl
|
|
};
|
|
|
|
long
|
|
ics2101_mixer_init (long mem_start)
|
|
{
|
|
int i;
|
|
|
|
if (num_mixers < MAX_MIXER_DEV)
|
|
{
|
|
mixer_devs[num_mixers++] = &ics2101_mixer_operations;
|
|
|
|
/*
|
|
* Some GUS v3.7 cards had some channels flipped. Disable
|
|
* the flipping feature if the model id is other than 5.
|
|
*/
|
|
|
|
if (INB (u_MixSelect) != 5)
|
|
{
|
|
for (i = 0; i < ICS_MIXDEVS; i++)
|
|
left_fix[i] = 1;
|
|
for (i = 0; i < ICS_MIXDEVS; i++)
|
|
right_fix[i] = 2;
|
|
}
|
|
|
|
set_volumes (DEV_GF1, 0x5a5a);
|
|
set_volumes (DEV_CD, 0x5a5a);
|
|
set_volumes (DEV_MIC, 0x0000);
|
|
set_volumes (DEV_LINE, 0x5a5a);
|
|
set_volumes (DEV_VOL, 0x5a5a);
|
|
set_volumes (DEV_UNUSED, 0x0000);
|
|
}
|
|
|
|
return mem_start;
|
|
}
|
|
|
|
#endif
|