78 static int portman_free(struct portman *pm)  in portman_free()  argument
80 	kfree(pm);  in portman_free()
88 	struct portman *pm;  in portman_create()  local
92 	pm = kzalloc(sizeof(struct portman), GFP_KERNEL);  in portman_create()
93 	if (pm == NULL)   in portman_create()
97 	spin_lock_init(&pm->reg_lock);  in portman_create()
98 	pm->card = card;  in portman_create()
99 	pm->pardev = pardev;  in portman_create()
101 	*rchip = pm;  in portman_create()
181 static inline void portman_write_command(struct portman *pm, u8 value)  in portman_write_command()  argument
183 	parport_write_control(pm->pardev->port, value);  in portman_write_command()
186 static inline u8 portman_read_command(struct portman *pm)  in portman_read_command()  argument
188 	return parport_read_control(pm->pardev->port);  in portman_read_command()
191 static inline u8 portman_read_status(struct portman *pm)  in portman_read_status()  argument
193 	return parport_read_status(pm->pardev->port);  in portman_read_status()
196 static inline u8 portman_read_data(struct portman *pm)  in portman_read_data()  argument
198 	return parport_read_data(pm->pardev->port);  in portman_read_data()
201 static inline void portman_write_data(struct portman *pm, u8 value)  in portman_write_data()  argument
203 	parport_write_data(pm->pardev->port, value);  in portman_write_data()
206 static void portman_write_midi(struct portman *pm,   in portman_write_midi()  argument
228 		portman_write_command(pm, command);  in portman_write_midi()
234 		portman_write_data(pm, mididata);  in portman_write_midi()
239 	} while ((portman_read_status(pm) & TXEMPTY) != TXEMPTY);  in portman_write_midi()
246 	portman_write_command(pm, command | STROBE);  in portman_write_midi()
253 	while ((portman_read_status(pm) & ESTB) == 0)  in portman_write_midi()
257 	portman_write_command(pm, command);  in portman_write_midi()
259 	while ((portman_read_status(pm) & ESTB) == ESTB)  in portman_write_midi()
266 	while ((portman_read_status(pm) & BUSY) == BUSY)  in portman_write_midi()
278 static int portman_read_midi(struct portman *pm, int port)  in portman_read_midi()  argument
284 	portman_write_data(pm, 0);	/* Make sure edge is down. */  in portman_read_midi()
288 	portman_write_command(pm, cmdout);  in portman_read_midi()
290 	while ((portman_read_status(pm) & ESTB) == ESTB)  in portman_read_midi()
296 	if ((portman_read_status(pm) & RXAVAIL) == 0)  in portman_read_midi()
300 	portman_write_command(pm, cmdout | STROBE);	/* Write address+IE+Strobe. */  in portman_read_midi()
302 	while ((portman_read_status(pm) & ESTB) == 0)  in portman_read_midi()
306 	midi_data = (portman_read_status(pm) & 128);  in portman_read_midi()
307 	portman_write_data(pm, 1);	/* Cause rising edge, which shifts data. */  in portman_read_midi()
310 	portman_write_data(pm, 0);	/* Cause falling edge while data settles. */  in portman_read_midi()
311 	midi_data |= (portman_read_status(pm) >> 1) & 64;  in portman_read_midi()
312 	portman_write_data(pm, 1);	/* Cause rising edge, which shifts data. */  in portman_read_midi()
315 	portman_write_data(pm, 0);	/* Cause falling edge while data settles. */  in portman_read_midi()
316 	midi_data |= (portman_read_status(pm) >> 2) & 32;  in portman_read_midi()
317 	portman_write_data(pm, 1);	/* Cause rising edge, which shifts data. */  in portman_read_midi()
320 	portman_write_data(pm, 0);	/* Cause falling edge while data settles. */  in portman_read_midi()
321 	midi_data |= (portman_read_status(pm) >> 3) & 16;  in portman_read_midi()
322 	portman_write_data(pm, 1);	/* Cause rising edge, which shifts data. */  in portman_read_midi()
325 	portman_write_data(pm, 0);	/* Cause falling edge while data settles. */  in portman_read_midi()
326 	midi_data |= (portman_read_status(pm) >> 4) & 8;  in portman_read_midi()
327 	portman_write_data(pm, 1);	/* Cause rising edge, which shifts data. */  in portman_read_midi()
330 	portman_write_data(pm, 0);	/* Cause falling edge while data settles. */  in portman_read_midi()
331 	midi_data |= (portman_read_status(pm) >> 5) & 4;  in portman_read_midi()
332 	portman_write_data(pm, 1);	/* Cause rising edge, which shifts data. */  in portman_read_midi()
335 	portman_write_data(pm, 0);	/* Cause falling edge while data settles. */  in portman_read_midi()
336 	midi_data |= (portman_read_status(pm) >> 6) & 2;  in portman_read_midi()
337 	portman_write_data(pm, 1);	/* Cause rising edge, which shifts data. */  in portman_read_midi()
340 	portman_write_data(pm, 0);	/* Cause falling edge while data settles. */  in portman_read_midi()
341 	midi_data |= (portman_read_status(pm) >> 7) & 1;  in portman_read_midi()
342 	portman_write_data(pm, 1);	/* Cause rising edge, which shifts data. */  in portman_read_midi()
343 	portman_write_data(pm, 0);	/* Return data clock low. */  in portman_read_midi()
347 	portman_write_command(pm, cmdout);	/* Output saved address+IE. */  in portman_read_midi()
350 	while ((portman_read_status(pm) & ESTB) == ESTB)  in portman_read_midi()
360 static int portman_data_avail(struct portman *pm, int channel)  in portman_data_avail()  argument
372 	portman_write_command(pm, command);  in portman_data_avail()
374 	if ((portman_read_status(pm) & RXAVAIL) == RXAVAIL)  in portman_data_avail()
385 static void portman_flush_input(struct portman *pm, unsigned char port)  in portman_flush_input()  argument
406 	portman_write_command(pm, command);  in portman_flush_input()
409 	portman_write_command(pm, command | STROBE);  in portman_flush_input()
412 	while ((portman_read_status(pm) & ESTB) == 0)  in portman_flush_input()
416 	portman_write_data(pm, 0);  in portman_flush_input()
420 		portman_write_data(pm, 1);  in portman_flush_input()
421 		portman_write_data(pm, 0);  in portman_flush_input()
425 	portman_write_command(pm, command | INT_EN);  in portman_flush_input()
428 	while ((portman_read_status(pm) & ESTB) == ESTB)  in portman_flush_input()
486 static int portman_device_init(struct portman *pm)  in portman_device_init()  argument
488 	portman_flush_input(pm, 0);  in portman_device_init()
489 	portman_flush_input(pm, 1);  in portman_device_init()
510 	struct portman *pm = substream->rmidi->private_data;  in snd_portman_midi_input_trigger()  local
513 	spin_lock_irqsave(&pm->reg_lock, flags);  in snd_portman_midi_input_trigger()
515 		pm->mode[substream->number] |= PORTMAN2X4_MODE_INPUT_TRIGGERED;  in snd_portman_midi_input_trigger()
517 		pm->mode[substream->number] &= ~PORTMAN2X4_MODE_INPUT_TRIGGERED;  in snd_portman_midi_input_trigger()
518 	spin_unlock_irqrestore(&pm->reg_lock, flags);  in snd_portman_midi_input_trigger()
524 	struct portman *pm = substream->rmidi->private_data;  in snd_portman_midi_output_trigger()  local
528 	spin_lock_irqsave(&pm->reg_lock, flags);  in snd_portman_midi_output_trigger()
531 			portman_write_midi(pm, substream->number, byte);  in snd_portman_midi_output_trigger()
533 	spin_unlock_irqrestore(&pm->reg_lock, flags);  in snd_portman_midi_output_trigger()
551 	struct portman *pm = card->private_data;  in snd_portman_rawmidi_create()  local
563 	rmidi->private_data = pm;  in snd_portman_rawmidi_create()
569 	pm->rmidi = rmidi;  in snd_portman_rawmidi_create()
589 		pm->midi_input[substream->number] = substream;  in snd_portman_rawmidi_create()
603 	struct portman *pm = ((struct snd_card*)userdata)->private_data;  in snd_portman_interrupt()  local
605 	spin_lock(&pm->reg_lock);  in snd_portman_interrupt()
608 	while ((portman_read_status(pm) & INT_REQ) == INT_REQ) {  in snd_portman_interrupt()
611 		if (portman_data_avail(pm, 0)) {  in snd_portman_interrupt()
613 			midivalue = portman_read_midi(pm, 0);  in snd_portman_interrupt()
615 			if (pm->mode[0] & PORTMAN2X4_MODE_INPUT_TRIGGERED)  in snd_portman_interrupt()
616 				snd_rawmidi_receive(pm->midi_input[0],  in snd_portman_interrupt()
622 		if (portman_data_avail(pm, 1)) {  in snd_portman_interrupt()
624 			midivalue = portman_read_midi(pm, 1);  in snd_portman_interrupt()
626 			if (pm->mode[1] & PORTMAN2X4_MODE_INPUT_TRIGGERED)  in snd_portman_interrupt()
627 				snd_rawmidi_receive(pm->midi_input[1],  in snd_portman_interrupt()
633 	spin_unlock(&pm->reg_lock);  in snd_portman_interrupt()
690 	struct portman *pm = card->private_data;  in snd_portman_card_private_free()  local
691 	struct pardevice *pardev = pm->pardev;  in snd_portman_card_private_free()
698 	portman_free(pm);  in snd_portman_card_private_free()
707 	struct portman *pm = NULL;  in snd_portman_probe()  local
753 	if ((err = portman_create(card, pardev, &pm)) < 0) {  in snd_portman_probe()
757 	card->private_data = pm;  in snd_portman_probe()
772 	if ((err = portman_device_init(pm)) < 0)  in snd_portman_probe()