static int snd_gf1_uart_input_open(snd_rawmidi_substream_t * substream)
{
unsigned long flags;
snd_gus_card_t *gus;
int i;
gus = snd_magic_cast(snd_gus_card_t, substream->rmidi->private_data, return -ENXIO);
spin_lock_irqsave(&gus->uart_cmd_lock, flags);
if (gus->gf1.interrupt_handler_midi_out != snd_gf1_interrupt_midi_out) {
snd_gf1_uart_reset(gus, 0);
}
gus->gf1.interrupt_handler_midi_in = snd_gf1_interrupt_midi_in;
gus->midi_substream_input = substream;
if (gus->uart_enable) {
for (i = 0; i < 1000 && (snd_gf1_uart_stat(gus) & 0x01); i++)
snd_gf1_uart_get(gus); /* clean Rx */
if (i >= 1000)
snd_printk("gus midi uart init read - cleanup error\n");
}
spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);
#if 0
snd_printk("read init - enable = %i, cmd = 0x%x, stat = 0x%x\n", gus->uart_enable, gus->gf1.uart_cmd, snd_gf1_uart_stat(gus));
snd_printk("[0x%x] reg (ctrl/status) = 0x%x, reg (data) = 0x%x (page = 0x%x)\n", gus->gf1.port + 0x100, inb(gus->gf1.port + 0x100), inb(gus->gf1.port + 0x101), inb(gus->gf1.port + 0x102));
#endif
return 0;
}
static int snd_gf1_uart_input_close(snd_rawmidi_substream_t * substream)
{
unsigned long flags;
snd_gus_card_t *gus;
gus = snd_magic_cast(snd_gus_card_t, substream->rmidi->private_data, return -ENXIO);
spin_lock_irqsave(&gus->uart_cmd_lock, flags);
if (gus->gf1.interrupt_handler_midi_out != snd_gf1_interrupt_midi_out)
snd_gf1_uart_reset(gus, 1);
snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_MIDI_IN);
gus->midi_substream_input = NULL;
spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);
return 0;
}
static int snd_gf1_uart_output_close(struct snd_rawmidi_substream *substream)
{
unsigned long flags;
struct snd_gus_card *gus;
gus = substream->rmidi->private_data;
spin_lock_irqsave(&gus->uart_cmd_lock, flags);
if (gus->gf1.interrupt_handler_midi_in != snd_gf1_interrupt_midi_in)
snd_gf1_uart_reset(gus, 1);
snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_MIDI_OUT);
gus->midi_substream_output = NULL;
spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);
return 0;
}
static int snd_gf1_uart_output_open(snd_rawmidi_substream_t * substream)
{
unsigned long flags;
snd_gus_card_t *gus;
gus = snd_magic_cast(snd_gus_card_t, substream->rmidi->private_data, return -ENXIO);
spin_lock_irqsave(&gus->uart_cmd_lock, flags);
if (!(gus->gf1.uart_cmd & 0x80)) { /* input active? */
snd_gf1_uart_reset(gus, 0);
}
gus->gf1.interrupt_handler_midi_out = snd_gf1_interrupt_midi_out;
gus->midi_substream_output = substream;
spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);
#if 0
snd_printk("write init - cmd = 0x%x, stat = 0x%x\n", gus->gf1.uart_cmd, snd_gf1_uart_stat(gus));
#endif
return 0;
}
