diff options
Diffstat (limited to 'sound/oss/v_midi.c')
| -rw-r--r-- | sound/oss/v_midi.c | 290 |
1 files changed, 0 insertions, 290 deletions
diff --git a/sound/oss/v_midi.c b/sound/oss/v_midi.c deleted file mode 100644 index fc0ba276cc8f..000000000000 --- a/sound/oss/v_midi.c +++ /dev/null @@ -1,290 +0,0 @@ -/* - * sound/oss/v_midi.c - * - * The low level driver for the Sound Blaster DS chips. - * - * - * Copyright (C) by Hannu Savolainen 1993-1996 - * - * USS/Lite 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 - * Alan Cox Modularisation, changed memory allocations - * Christoph Hellwig Adapted to module_init/module_exit - * - * Status - * Untested - */ - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/spinlock.h> -#include "sound_config.h" - -#include "v_midi.h" - -static vmidi_devc *v_devc[2] = { NULL, NULL}; -static int midi1,midi2; -static void *midi_mem = NULL; - -/* - * 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 v_midi_open (int dev, int mode, - void (*input) (int dev, unsigned char data), - void (*output) (int dev) -) -{ - vmidi_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->intr_active = 1; - - if (mode & OPEN_READ) - { - devc->input_opened = 1; - devc->midi_input_intr = input; - } - - return 0; -} - -static void v_midi_close (int dev) -{ - vmidi_devc *devc = midi_devs[dev]->devc; - unsigned long flags; - - if (devc == NULL) - return; - - spin_lock_irqsave(&devc->lock,flags); - devc->intr_active = 0; - devc->input_opened = 0; - devc->opened = 0; - spin_unlock_irqrestore(&devc->lock,flags); -} - -static int v_midi_out (int dev, unsigned char midi_byte) -{ - vmidi_devc *devc = midi_devs[dev]->devc; - vmidi_devc *pdevc; - - if (devc == NULL) - return -ENXIO; - - pdevc = midi_devs[devc->pair_mididev]->devc; - if (pdevc->input_opened > 0){ - if (MIDIbuf_avail(pdevc->my_mididev) > 500) - return 0; - pdevc->midi_input_intr (pdevc->my_mididev, midi_byte); - } - return 1; -} - -static inline int v_midi_start_read (int dev) -{ - return 0; -} - -static int v_midi_end_read (int dev) -{ - vmidi_devc *devc = midi_devs[dev]->devc; - if (devc == NULL) - return -ENXIO; - - devc->intr_active = 0; - return 0; -} - -/* why -EPERM and not -EINVAL?? */ - -static inline int v_midi_ioctl (int dev, unsigned cmd, void __user *arg) -{ - return -EPERM; -} - - -#define MIDI_SYNTH_NAME "Loopback MIDI" -#define MIDI_SYNTH_CAPS SYNTH_CAP_INPUT - -#include "midi_synth.h" - -static struct midi_operations v_midi_operations = -{ - .owner = THIS_MODULE, - .info = {"Loopback MIDI Port 1", 0, 0, SNDCARD_VMIDI}, - .converter = &std_midi_synth, - .in_info = {0}, - .open = v_midi_open, - .close = v_midi_close, - .ioctl = v_midi_ioctl, - .outputc = v_midi_out, - .start_read = v_midi_start_read, - .end_read = v_midi_end_read, -}; - -static struct midi_operations v_midi_operations2 = -{ - .owner = THIS_MODULE, - .info = {"Loopback MIDI Port 2", 0, 0, SNDCARD_VMIDI}, - .converter = &std_midi_synth, - .in_info = {0}, - .open = v_midi_open, - .close = v_midi_close, - .ioctl = v_midi_ioctl, - .outputc = v_midi_out, - .start_read = v_midi_start_read, - .end_read = v_midi_end_read, -}; - -/* - * We kmalloc just one of these - it makes life simpler and the code - * cleaner and the memory handling far more efficient - */ - -struct vmidi_memory -{ - /* Must be first */ - struct midi_operations m_ops[2]; - struct synth_operations s_ops[2]; - struct vmidi_devc v_ops[2]; -}; - -static void __init attach_v_midi (struct address_info *hw_config) -{ - struct vmidi_memory *m; - /* printk("Attaching v_midi device.....\n"); */ - - midi1 = sound_alloc_mididev(); - if (midi1 == -1) - { - printk(KERN_ERR "v_midi: Too many midi devices detected\n"); - return; - } - - m = kmalloc(sizeof(struct vmidi_memory), GFP_KERNEL); - if (m == NULL) - { - printk(KERN_WARNING "Loopback MIDI: Failed to allocate memory\n"); - sound_unload_mididev(midi1); - return; - } - - midi_mem = m; - - midi_devs[midi1] = &m->m_ops[0]; - - - midi2 = sound_alloc_mididev(); - if (midi2 == -1) - { - printk (KERN_ERR "v_midi: Too many midi devices detected\n"); - kfree(m); - sound_unload_mididev(midi1); - return; - } - - midi_devs[midi2] = &m->m_ops[1]; - - /* printk("VMIDI1: %d VMIDI2: %d\n",midi1,midi2); */ - - /* for MIDI-1 */ - v_devc[0] = &m->v_ops[0]; - memcpy ((char *) midi_devs[midi1], (char *) &v_midi_operations, - sizeof (struct midi_operations)); - - v_devc[0]->my_mididev = midi1; - v_devc[0]->pair_mididev = midi2; - v_devc[0]->opened = v_devc[0]->input_opened = 0; - v_devc[0]->intr_active = 0; - v_devc[0]->midi_input_intr = NULL; - spin_lock_init(&v_devc[0]->lock); - - midi_devs[midi1]->devc = v_devc[0]; - - midi_devs[midi1]->converter = &m->s_ops[0]; - std_midi_synth.midi_dev = midi1; - memcpy ((char *) midi_devs[midi1]->converter, (char *) &std_midi_synth, - sizeof (struct synth_operations)); - midi_devs[midi1]->converter->id = "V_MIDI 1"; - - /* for MIDI-2 */ - v_devc[1] = &m->v_ops[1]; - - memcpy ((char *) midi_devs[midi2], (char *) &v_midi_operations2, - sizeof (struct midi_operations)); - - v_devc[1]->my_mididev = midi2; - v_devc[1]->pair_mididev = midi1; - v_devc[1]->opened = v_devc[1]->input_opened = 0; - v_devc[1]->intr_active = 0; - v_devc[1]->midi_input_intr = NULL; - spin_lock_init(&v_devc[1]->lock); - - midi_devs[midi2]->devc = v_devc[1]; - midi_devs[midi2]->converter = &m->s_ops[1]; - - std_midi_synth.midi_dev = midi2; - memcpy ((char *) midi_devs[midi2]->converter, (char *) &std_midi_synth, - sizeof (struct synth_operations)); - midi_devs[midi2]->converter->id = "V_MIDI 2"; - - sequencer_init(); - /* printk("Attached v_midi device\n"); */ -} - -static inline int __init probe_v_midi(struct address_info *hw_config) -{ - return(1); /* always OK */ -} - - -static void __exit unload_v_midi(struct address_info *hw_config) -{ - sound_unload_mididev(midi1); - sound_unload_mididev(midi2); - kfree(midi_mem); -} - -static struct address_info cfg; /* dummy */ - -static int __init init_vmidi(void) -{ - printk("MIDI Loopback device driver\n"); - if (!probe_v_midi(&cfg)) - return -ENODEV; - attach_v_midi(&cfg); - - return 0; -} - -static void __exit cleanup_vmidi(void) -{ - unload_v_midi(&cfg); -} - -module_init(init_vmidi); -module_exit(cleanup_vmidi); -MODULE_LICENSE("GPL"); |
