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 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 void sb_midi_close(int dev) { sb_devc *devc = midi_devs[dev]->devc; unsigned long flags; if (devc == NULL) return; save_flags(flags); cli(); sb_dsp_reset(devc); devc->intr_active = 0; devc->input_opened = 0; devc->opened = 0; restore_flags(flags); }
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; save_flags(flags); cli(); if (devc->opened) { restore_flags(flags); return -EBUSY; } devc->opened = 1; restore_flags(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; }