summaryrefslogtreecommitdiff
path: root/sound/oss/gus_midi.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/oss/gus_midi.c')
-rw-r--r--sound/oss/gus_midi.c256
1 files changed, 0 insertions, 256 deletions
diff --git a/sound/oss/gus_midi.c b/sound/oss/gus_midi.c
deleted file mode 100644
index d1997a417ad0..000000000000
--- a/sound/oss/gus_midi.c
+++ /dev/null
@@ -1,256 +0,0 @@
-/*
- * sound/oss/gus_midi.c
- *
- * The low level driver for the GUS Midi Interface.
- *
- *
- * 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.
- *
- * Changes:
- * 11-10-2000 Bartlomiej Zolnierkiewicz <bkz@linux-ide.org>
- * Added __init to gus_midi_init()
- */
-
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include "sound_config.h"
-
-#include "gus.h"
-#include "gus_hw.h"
-
-static int midi_busy, input_opened;
-static int my_dev;
-static int output_used;
-static volatile unsigned char gus_midi_control;
-static void (*midi_input_intr) (int dev, unsigned char data);
-
-static unsigned char tmp_queue[256];
-extern int gus_pnp_flag;
-static volatile int qlen;
-static volatile unsigned char qhead, qtail;
-extern int gus_base, gus_irq, gus_dma;
-extern int *gus_osp;
-extern spinlock_t gus_lock;
-
-static int GUS_MIDI_STATUS(void)
-{
- return inb(u_MidiStatus);
-}
-
-static int gus_midi_open(int dev, int mode, void (*input) (int dev, unsigned char data), void (*output) (int dev))
-{
- if (midi_busy)
- {
-/* printk("GUS: Midi busy\n");*/
- return -EBUSY;
- }
- outb((MIDI_RESET), u_MidiControl);
- gus_delay();
-
- gus_midi_control = 0;
- input_opened = 0;
-
- if (mode == OPEN_READ || mode == OPEN_READWRITE)
- if (!gus_pnp_flag)
- {
- gus_midi_control |= MIDI_ENABLE_RCV;
- input_opened = 1;
- }
- outb((gus_midi_control), u_MidiControl); /* Enable */
-
- midi_busy = 1;
- qlen = qhead = qtail = output_used = 0;
- midi_input_intr = input;
-
- return 0;
-}
-
-static int dump_to_midi(unsigned char midi_byte)
-{
- unsigned long flags;
- int ok = 0;
-
- output_used = 1;
-
- spin_lock_irqsave(&gus_lock, flags);
-
- if (GUS_MIDI_STATUS() & MIDI_XMIT_EMPTY)
- {
- ok = 1;
- outb((midi_byte), u_MidiData);
- }
- else
- {
- /*
- * Enable Midi xmit interrupts (again)
- */
- gus_midi_control |= MIDI_ENABLE_XMIT;
- outb((gus_midi_control), u_MidiControl);
- }
-
- spin_unlock_irqrestore(&gus_lock,flags);
- return ok;
-}
-
-static void gus_midi_close(int dev)
-{
- /*
- * Reset FIFO pointers, disable intrs
- */
-
- outb((MIDI_RESET), u_MidiControl);
- midi_busy = 0;
-}
-
-static int gus_midi_out(int dev, unsigned char midi_byte)
-{
- unsigned long flags;
-
- /*
- * Drain the local queue first
- */
- spin_lock_irqsave(&gus_lock, flags);
-
- while (qlen && dump_to_midi(tmp_queue[qhead]))
- {
- qlen--;
- qhead++;
- }
- spin_unlock_irqrestore(&gus_lock,flags);
-
- /*
- * Output the byte if the local queue is empty.
- */
-
- if (!qlen)
- if (dump_to_midi(midi_byte))
- return 1; /*
- * OK
- */
-
- /*
- * Put to the local queue
- */
-
- if (qlen >= 256)
- return 0; /*
- * Local queue full
- */
- spin_lock_irqsave(&gus_lock, flags);
-
- tmp_queue[qtail] = midi_byte;
- qlen++;
- qtail++;
-
- spin_unlock_irqrestore(&gus_lock,flags);
- return 1;
-}
-
-static int gus_midi_start_read(int dev)
-{
- return 0;
-}
-
-static int gus_midi_end_read(int dev)
-{
- return 0;
-}
-
-static void gus_midi_kick(int dev)
-{
-}
-
-static int gus_midi_buffer_status(int dev)
-{
- unsigned long flags;
-
- if (!output_used)
- return 0;
-
- spin_lock_irqsave(&gus_lock, flags);
-
- if (qlen && dump_to_midi(tmp_queue[qhead]))
- {
- qlen--;
- qhead++;
- }
- spin_unlock_irqrestore(&gus_lock,flags);
- return (qlen > 0) || !(GUS_MIDI_STATUS() & MIDI_XMIT_EMPTY);
-}
-
-#define MIDI_SYNTH_NAME "Gravis Ultrasound Midi"
-#define MIDI_SYNTH_CAPS SYNTH_CAP_INPUT
-#include "midi_synth.h"
-
-static struct midi_operations gus_midi_operations =
-{
- .owner = THIS_MODULE,
- .info = {"Gravis UltraSound Midi", 0, 0, SNDCARD_GUS},
- .converter = &std_midi_synth,
- .in_info = {0},
- .open = gus_midi_open,
- .close = gus_midi_close,
- .outputc = gus_midi_out,
- .start_read = gus_midi_start_read,
- .end_read = gus_midi_end_read,
- .kick = gus_midi_kick,
- .buffer_status = gus_midi_buffer_status,
-};
-
-void __init gus_midi_init(struct address_info *hw_config)
-{
- int dev = sound_alloc_mididev();
-
- if (dev == -1)
- {
- printk(KERN_INFO "gus_midi: Too many midi devices detected\n");
- return;
- }
- outb((MIDI_RESET), u_MidiControl);
-
- std_midi_synth.midi_dev = my_dev = dev;
- hw_config->slots[2] = dev;
- midi_devs[dev] = &gus_midi_operations;
- sequencer_init();
- return;
-}
-
-void gus_midi_interrupt(int dummy)
-{
- volatile unsigned char stat, data;
- int timeout = 10;
-
- spin_lock(&gus_lock);
-
- while (timeout-- > 0 && (stat = GUS_MIDI_STATUS()) & (MIDI_RCV_FULL | MIDI_XMIT_EMPTY))
- {
- if (stat & MIDI_RCV_FULL)
- {
- data = inb(u_MidiData);
- if (input_opened)
- midi_input_intr(my_dev, data);
- }
- if (stat & MIDI_XMIT_EMPTY)
- {
- while (qlen && dump_to_midi(tmp_queue[qhead]))
- {
- qlen--;
- qhead++;
- }
- if (!qlen)
- {
- /*
- * Disable Midi output interrupts, since no data in the buffer
- */
- gus_midi_control &= ~MIDI_ENABLE_XMIT;
- outb((gus_midi_control), u_MidiControl);
- outb((gus_midi_control), u_MidiControl);
- }
- }
- }
- spin_unlock(&gus_lock);
-}