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-rw-r--r--sys/i386/isa/sound/gus_linearvol.h18
-rw-r--r--sys/i386/isa/sound/ics2101.c261
2 files changed, 279 insertions, 0 deletions
diff --git a/sys/i386/isa/sound/gus_linearvol.h b/sys/i386/isa/sound/gus_linearvol.h
new file mode 100644
index 0000000..7ad0c30
--- /dev/null
+++ b/sys/i386/isa/sound/gus_linearvol.h
@@ -0,0 +1,18 @@
+static unsigned short gus_linearvol[128] = {
+ 0x0000, 0x08ff, 0x09ff, 0x0a80, 0x0aff, 0x0b40, 0x0b80, 0x0bc0,
+ 0x0bff, 0x0c20, 0x0c40, 0x0c60, 0x0c80, 0x0ca0, 0x0cc0, 0x0ce0,
+ 0x0cff, 0x0d10, 0x0d20, 0x0d30, 0x0d40, 0x0d50, 0x0d60, 0x0d70,
+ 0x0d80, 0x0d90, 0x0da0, 0x0db0, 0x0dc0, 0x0dd0, 0x0de0, 0x0df0,
+ 0x0dff, 0x0e08, 0x0e10, 0x0e18, 0x0e20, 0x0e28, 0x0e30, 0x0e38,
+ 0x0e40, 0x0e48, 0x0e50, 0x0e58, 0x0e60, 0x0e68, 0x0e70, 0x0e78,
+ 0x0e80, 0x0e88, 0x0e90, 0x0e98, 0x0ea0, 0x0ea8, 0x0eb0, 0x0eb8,
+ 0x0ec0, 0x0ec8, 0x0ed0, 0x0ed8, 0x0ee0, 0x0ee8, 0x0ef0, 0x0ef8,
+ 0x0eff, 0x0f04, 0x0f08, 0x0f0c, 0x0f10, 0x0f14, 0x0f18, 0x0f1c,
+ 0x0f20, 0x0f24, 0x0f28, 0x0f2c, 0x0f30, 0x0f34, 0x0f38, 0x0f3c,
+ 0x0f40, 0x0f44, 0x0f48, 0x0f4c, 0x0f50, 0x0f54, 0x0f58, 0x0f5c,
+ 0x0f60, 0x0f64, 0x0f68, 0x0f6c, 0x0f70, 0x0f74, 0x0f78, 0x0f7c,
+ 0x0f80, 0x0f84, 0x0f88, 0x0f8c, 0x0f90, 0x0f94, 0x0f98, 0x0f9c,
+ 0x0fa0, 0x0fa4, 0x0fa8, 0x0fac, 0x0fb0, 0x0fb4, 0x0fb8, 0x0fbc,
+ 0x0fc0, 0x0fc4, 0x0fc8, 0x0fcc, 0x0fd0, 0x0fd4, 0x0fd8, 0x0fdc,
+ 0x0fe0, 0x0fe4, 0x0fe8, 0x0fec, 0x0ff0, 0x0ff4, 0x0ff8, 0x0ffc
+};
diff --git a/sys/i386/isa/sound/ics2101.c b/sys/i386/isa/sound/ics2101.c
new file mode 100644
index 0000000..619b635
--- /dev/null
+++ b/sys/i386/isa/sound/ics2101.c
@@ -0,0 +1,261 @@
+/*
+ * 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.
+ *
+ */
+
+#include "sound_config.h"
+#if defined(CONFIGURE_SOUNDCARD) && !defined(EXCLUDE_GUS)
+
+#include "ultrasound.h"
+#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
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