diff options
Diffstat (limited to 'sound/oss/sb_midi.c')
| -rw-r--r-- | sound/oss/sb_midi.c | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/sound/oss/sb_midi.c b/sound/oss/sb_midi.c deleted file mode 100644 index 551ee7557b4e..000000000000 --- a/sound/oss/sb_midi.c +++ /dev/null @@ -1,206 +0,0 @@ -/* - * sound/oss/sb_midi.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 <linux/slab.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] = 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 = 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(); -} |