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/sb_midi.c b/sound/oss/sb_midi.c
new file mode 100644
index 0000000..ed3bd06
--- /dev/null
+++ b/sound/oss/sb_midi.c
@@ -0,0 +1,205 @@
+/*
+ * sound/sb_dsp.c
+ *
+ * The low level driver for the Sound Blaster DS chips.
+ *
+ *
+ * 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.
+ */
+
+#include <linux/spinlock.h>
+
+#include "sound_config.h"
+
+#include "sb.h"
+#undef SB_TEST_IRQ
+
+/*
+ * The DSP channel can be used either for input or output. Variable
+ * 'sb_irq_mode' will be set when the program calls read or write first time
+ * after open. Current version doesn't support mode changes without closing
+ * and reopening the device. Support for this feature may be implemented in a
+ * future version of this driver.
+ */
+
+
+static int sb_midi_open(int dev, int mode,
+ void (*input) (int dev, unsigned char data),
+ void (*output) (int dev)
+)
+{
+ sb_devc *devc = midi_devs[dev]->devc;
+ unsigned long flags;
+
+ if (devc == NULL)
+ return -ENXIO;
+
+ spin_lock_irqsave(&devc->lock, flags);
+ if (devc->opened)
+ {
+ spin_unlock_irqrestore(&devc->lock, flags);
+ return -EBUSY;
+ }
+ devc->opened = 1;
+ spin_unlock_irqrestore(&devc->lock, flags);
+
+ devc->irq_mode = IMODE_MIDI;
+ devc->midi_broken = 0;
+
+ sb_dsp_reset(devc);
+
+ if (!sb_dsp_command(devc, 0x35)) /* Start MIDI UART mode */
+ {
+ devc->opened = 0;
+ return -EIO;
+ }
+ devc->intr_active = 1;
+
+ if (mode & OPEN_READ)
+ {
+ devc->input_opened = 1;
+ devc->midi_input_intr = input;
+ }
+ return 0;
+}
+
+static void sb_midi_close(int dev)
+{
+ sb_devc *devc = midi_devs[dev]->devc;
+ unsigned long flags;
+
+ if (devc == NULL)
+ return;
+
+ spin_lock_irqsave(&devc->lock, flags);
+ sb_dsp_reset(devc);
+ devc->intr_active = 0;
+ devc->input_opened = 0;
+ devc->opened = 0;
+ spin_unlock_irqrestore(&devc->lock, flags);
+}
+
+static int sb_midi_out(int dev, unsigned char midi_byte)
+{
+ sb_devc *devc = midi_devs[dev]->devc;
+
+ if (devc == NULL)
+ return 1;
+
+ if (devc->midi_broken)
+ return 1;
+
+ if (!sb_dsp_command(devc, midi_byte))
+ {
+ devc->midi_broken = 1;
+ return 1;
+ }
+ return 1;
+}
+
+static int sb_midi_start_read(int dev)
+{
+ return 0;
+}
+
+static int sb_midi_end_read(int dev)
+{
+ sb_devc *devc = midi_devs[dev]->devc;
+
+ if (devc == NULL)
+ return -ENXIO;
+
+ sb_dsp_reset(devc);
+ devc->intr_active = 0;
+ return 0;
+}
+
+static int sb_midi_ioctl(int dev, unsigned cmd, void __user *arg)
+{
+ return -EINVAL;
+}
+
+void sb_midi_interrupt(sb_devc * devc)
+{
+ unsigned long flags;
+ unsigned char data;
+
+ if (devc == NULL)
+ return;
+
+ spin_lock_irqsave(&devc->lock, flags);
+
+ data = inb(DSP_READ);
+ if (devc->input_opened)
+ devc->midi_input_intr(devc->my_mididev, data);
+
+ spin_unlock_irqrestore(&devc->lock, flags);
+}
+
+#define MIDI_SYNTH_NAME "Sound Blaster Midi"
+#define MIDI_SYNTH_CAPS 0
+#include "midi_synth.h"
+
+static struct midi_operations sb_midi_operations =
+{
+ .owner = THIS_MODULE,
+ .info = {"Sound Blaster", 0, 0, SNDCARD_SB},
+ .converter = &std_midi_synth,
+ .in_info = {0},
+ .open = sb_midi_open,
+ .close = sb_midi_close,
+ .ioctl = sb_midi_ioctl,
+ .outputc = sb_midi_out,
+ .start_read = sb_midi_start_read,
+ .end_read = sb_midi_end_read,
+};
+
+void sb_dsp_midi_init(sb_devc * devc, struct module *owner)
+{
+ int dev;
+
+ if (devc->model < 2) /* No MIDI support for SB 1.x */
+ return;
+
+ dev = sound_alloc_mididev();
+
+ if (dev == -1)
+ {
+ printk(KERN_ERR "sb_midi: too many MIDI devices detected\n");
+ return;
+ }
+ std_midi_synth.midi_dev = devc->my_mididev = dev;
+ midi_devs[dev] = (struct midi_operations *)kmalloc(sizeof(struct midi_operations), GFP_KERNEL);
+ if (midi_devs[dev] == NULL)
+ {
+ printk(KERN_WARNING "Sound Blaster: failed to allocate MIDI memory.\n");
+ sound_unload_mididev(dev);
+ return;
+ }
+ memcpy((char *) midi_devs[dev], (char *) &sb_midi_operations,
+ sizeof(struct midi_operations));
+
+ if (owner)
+ midi_devs[dev]->owner = owner;
+
+ midi_devs[dev]->devc = devc;
+
+
+ midi_devs[dev]->converter = (struct synth_operations *)kmalloc(sizeof(struct synth_operations), GFP_KERNEL);
+ if (midi_devs[dev]->converter == NULL)
+ {
+ printk(KERN_WARNING "Sound Blaster: failed to allocate MIDI memory.\n");
+ kfree(midi_devs[dev]);
+ sound_unload_mididev(dev);
+ return;
+ }
+ memcpy((char *) midi_devs[dev]->converter, (char *) &std_midi_synth,
+ sizeof(struct synth_operations));
+
+ midi_devs[dev]->converter->id = "SBMIDI";
+ sequencer_init();
+}