Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/sound/oss/ics2101.c b/sound/oss/ics2101.c
new file mode 100644
index 0000000..d5f3be8
--- /dev/null
+++ b/sound/oss/ics2101.c
@@ -0,0 +1,247 @@
+/*
+ * sound/ics2101.c
+ *
+ * Driver for the ICS2101 mixer of GUS v3.7.
+ *
+ *
+ * Copyright (C) by Hannu Savolainen 1993-1997
+ *
+ * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
+ * Version 2 (June 1991). See the "COPYING" file distributed with this software
+ * for more info.
+ *
+ *
+ * Thomas Sailer : ioctl code reworked (vmalloc/vfree removed)
+ * Bartlomiej Zolnierkiewicz : added __init to ics2101_mixer_init()
+ */
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include "sound_config.h"
+
+#include <linux/ultrasound.h>
+
+#include "gus.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_osp;
+extern int gus_base;
+extern spinlock_t gus_lock;
+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)
+{
+ /*
+ * 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);
+}
+
+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;
+ }
+
+ spin_lock_irqsave(&gus_lock, flags);
+ outb((ctrl_addr), u_MixSelect);
+ outb((selector[dev]), u_MixData);
+ outb((attn_addr), u_MixSelect);
+ outb(((unsigned char) vol), u_MixData);
+ spin_unlock_irqrestore(&gus_lock,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, void __user *arg)
+{
+ int val;
+
+ if (((cmd >> 8) & 0xff) == 'M') {
+ if (_SIOC_DIR(cmd) & _SIOC_WRITE) {
+
+ if (get_user(val, (int __user *)arg))
+ return -EFAULT;
+ switch (cmd & 0xff) {
+ case SOUND_MIXER_RECSRC:
+ return gus_default_mixer_ioctl(dev, cmd, arg);
+
+ case SOUND_MIXER_MIC:
+ val = set_volumes(DEV_MIC, val);
+ break;
+
+ case SOUND_MIXER_CD:
+ val = set_volumes(DEV_CD, val);
+ break;
+
+ case SOUND_MIXER_LINE:
+ val = set_volumes(DEV_LINE, val);
+ break;
+
+ case SOUND_MIXER_SYNTH:
+ val = set_volumes(DEV_GF1, val);
+ break;
+
+ case SOUND_MIXER_VOLUME:
+ val = set_volumes(DEV_VOL, val);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+ return put_user(val, (int __user *)arg);
+ } else {
+ switch (cmd & 0xff) {
+ /*
+ * Return parameters
+ */
+ case SOUND_MIXER_RECSRC:
+ return gus_default_mixer_ioctl(dev, cmd, arg);
+
+ case SOUND_MIXER_DEVMASK:
+ val = MIX_DEVS;
+ break;
+
+ case SOUND_MIXER_STEREODEVS:
+ val = SOUND_MASK_LINE | SOUND_MASK_CD | SOUND_MASK_SYNTH | SOUND_MASK_VOLUME | SOUND_MASK_MIC;
+ break;
+
+ case SOUND_MIXER_RECMASK:
+ val = SOUND_MASK_MIC | SOUND_MASK_LINE;
+ break;
+
+ case SOUND_MIXER_CAPS:
+ val = 0;
+ break;
+
+ case SOUND_MIXER_MIC:
+ val = volumes[DEV_MIC];
+ break;
+
+ case SOUND_MIXER_LINE:
+ val = volumes[DEV_LINE];
+ break;
+
+ case SOUND_MIXER_CD:
+ val = volumes[DEV_CD];
+ break;
+
+ case SOUND_MIXER_VOLUME:
+ val = volumes[DEV_VOL];
+ break;
+
+ case SOUND_MIXER_SYNTH:
+ val = volumes[DEV_GF1];
+ break;
+
+ default:
+ return -EINVAL;
+ }
+ return put_user(val, (int __user *)arg);
+ }
+ }
+ return -EINVAL;
+}
+
+static struct mixer_operations ics2101_mixer_operations =
+{
+ .owner = THIS_MODULE,
+ .id = "ICS2101",
+ .name = "ICS2101 Multimedia Mixer",
+ .ioctl = ics2101_mixer_ioctl
+};
+
+int __init ics2101_mixer_init(void)
+{
+ int i;
+ int n;
+
+ if ((n = sound_alloc_mixerdev()) != -1)
+ {
+ mixer_devs[n] = &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 n;
+}