[mirror_ubuntu-artful-kernel.git] / sound / pci / echoaudio / midi.c

/****************************************************************************

   Copyright Echo Digital Audio Corporation (c) 1998 - 2004
   All rights reserved
   www.echoaudio.com

   This file is part of Echo Digital Audio's generic driver library.

   Echo Digital Audio's generic driver library is free software;
   you can redistribute it and/or modify it under the terms of
   the GNU General Public License as published by the Free Software
   Foundation.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
   MA  02111-1307, USA.

   *************************************************************************

 Translation from C++ and adaptation for use in ALSA-Driver
 were made by Giuliano Pochini <pochini@shiny.it>

****************************************************************************/


/******************************************************************************
	MIDI lowlevel code
******************************************************************************/

/* Start and stop Midi input */
static int enable_midi_input(struct echoaudio *chip, char enable)
{
	dev_dbg(chip->card->dev, "enable_midi_input(%d)\n", enable);

	if (wait_handshake(chip))
		return -EIO;

	if (enable) {
		chip->mtc_state = MIDI_IN_STATE_NORMAL;
		chip->comm_page->flags |=
			cpu_to_le32(DSP_FLAG_MIDI_INPUT);
	} else
		chip->comm_page->flags &=
			~cpu_to_le32(DSP_FLAG_MIDI_INPUT);

	clear_handshake(chip);
	return send_vector(chip, DSP_VC_UPDATE_FLAGS);
}


/* Send a buffer full of MIDI data to the DSP
Returns how many actually written or < 0 on error */
static int write_midi(struct echoaudio *chip, u8 *data, int bytes)
{
	if (snd_BUG_ON(bytes <= 0 || bytes >= MIDI_OUT_BUFFER_SIZE))
		return -EINVAL;

	if (wait_handshake(chip))
		return -EIO;

	/* HF4 indicates that it is safe to write MIDI output data */
	if (! (get_dsp_register(chip, CHI32_STATUS_REG) & CHI32_STATUS_REG_HF4))
		return 0;

	chip->comm_page->midi_output[0] = bytes;
	memcpy(&chip->comm_page->midi_output[1], data, bytes);
	chip->comm_page->midi_out_free_count = 0;
	clear_handshake(chip);
	send_vector(chip, DSP_VC_MIDI_WRITE);
	dev_dbg(chip->card->dev, "write_midi: %d\n", bytes);
	return bytes;
}


/* Run the state machine for MIDI input data
MIDI time code sync isn't supported by this code right now, but you still need
this state machine to parse the incoming MIDI data stream.  Every time the DSP
sees a 0xF1 byte come in, it adds the DSP sample position to the MIDI data
stream. The DSP sample position is represented as a 32 bit unsigned value,
with the high 16 bits first, followed by the low 16 bits. Since these aren't
real MIDI bytes, the following logic is needed to skip them. */
static inline int mtc_process_data(struct echoaudio *chip, short midi_byte)
{
	switch (chip->mtc_state) {
	case MIDI_IN_STATE_NORMAL:
		if (midi_byte == 0xF1)
			chip->mtc_state = MIDI_IN_STATE_TS_HIGH;
		break;
	case MIDI_IN_STATE_TS_HIGH:
		chip->mtc_state = MIDI_IN_STATE_TS_LOW;
		return MIDI_IN_SKIP_DATA;
		break;
	case MIDI_IN_STATE_TS_LOW:
		chip->mtc_state = MIDI_IN_STATE_F1_DATA;
		return MIDI_IN_SKIP_DATA;
		break;
	case MIDI_IN_STATE_F1_DATA:
		chip->mtc_state = MIDI_IN_STATE_NORMAL;
		break;
	}
	return 0;
}


/* This function is called from the IRQ handler and it reads the midi data
from the DSP's buffer.  It returns the number of bytes received. */
static int midi_service_irq(struct echoaudio *chip)
{
	short int count, midi_byte, i, received;

	/* The count is at index 0, followed by actual data */
	count = le16_to_cpu(chip->comm_page->midi_input[0]);

	if (snd_BUG_ON(count >= MIDI_IN_BUFFER_SIZE))
		return 0;

	/* Get the MIDI data from the comm page */
	i = 1;
	received = 0;
	for (i = 1; i <= count; i++) {
		/* Get the MIDI byte */
		midi_byte = le16_to_cpu(chip->comm_page->midi_input[i]);

		/* Parse the incoming MIDI stream. The incoming MIDI data
		consists of MIDI bytes and timestamps for the MIDI time code
		0xF1 bytes. mtc_process_data() is a little state machine that
		parses the stream. If you get MIDI_IN_SKIP_DATA back, then
		this is a timestamp byte, not a MIDI byte, so don't store it
		in the MIDI input buffer. */
		if (mtc_process_data(chip, midi_byte) == MIDI_IN_SKIP_DATA)
			continue;

		chip->midi_buffer[received++] = (u8)midi_byte;
	}

	return received;
}


/******************************************************************************
	MIDI interface
******************************************************************************/

static int snd_echo_midi_input_open(struct snd_rawmidi_substream *substream)
{
	struct echoaudio *chip = substream->rmidi->private_data;

	chip->midi_in = substream;
	dev_dbg(chip->card->dev, "rawmidi_iopen\n");
	return 0;
}


static void snd_echo_midi_input_trigger(struct snd_rawmidi_substream *substream,
					int up)
{
	struct echoaudio *chip = substream->rmidi->private_data;

	if (up != chip->midi_input_enabled) {
		spin_lock_irq(&chip->lock);
		enable_midi_input(chip, up);
		spin_unlock_irq(&chip->lock);
		chip->midi_input_enabled = up;
	}
}


static int snd_echo_midi_input_close(struct snd_rawmidi_substream *substream)
{
	struct echoaudio *chip = substream->rmidi->private_data;

	chip->midi_in = NULL;
	dev_dbg(chip->card->dev, "rawmidi_iclose\n");
	return 0;
}


static int snd_echo_midi_output_open(struct snd_rawmidi_substream *substream)
{
	struct echoaudio *chip = substream->rmidi->private_data;

	chip->tinuse = 0;
	chip->midi_full = 0;
	chip->midi_out = substream;
	dev_dbg(chip->card->dev, "rawmidi_open\n");
	return 0;
}


static void snd_echo_midi_output_write(unsigned long data)
{
	struct echoaudio *chip = (struct echoaudio *)data;
	unsigned long flags;
	int bytes, sent, time;
	unsigned char buf[MIDI_OUT_BUFFER_SIZE - 1];

	dev_dbg(chip->card->dev, "snd_echo_midi_output_write\n");
	/* No interrupts are involved: we have to check at regular intervals
	if the card's output buffer has room for new data. */
	sent = bytes = 0;
	spin_lock_irqsave(&chip->lock, flags);
	chip->midi_full = 0;
	if (!snd_rawmidi_transmit_empty(chip->midi_out)) {
		bytes = snd_rawmidi_transmit_peek(chip->midi_out, buf,
						  MIDI_OUT_BUFFER_SIZE - 1);
		dev_dbg(chip->card->dev, "Try to send %d bytes...\n", bytes);
		sent = write_midi(chip, buf, bytes);
		if (sent < 0) {
			dev_err(chip->card->dev,
				"write_midi() error %d\n", sent);
			/* retry later */
			sent = 9000;
			chip->midi_full = 1;
		} else if (sent > 0) {
			dev_dbg(chip->card->dev, "%d bytes sent\n", sent);
			snd_rawmidi_transmit_ack(chip->midi_out, sent);
		} else {
			/* Buffer is full. DSP's internal buffer is 64 (128 ?)
			bytes long. Let's wait until half of them are sent */
			dev_dbg(chip->card->dev, "Full\n");
			sent = 32;
			chip->midi_full = 1;
		}
	}

	/* We restart the timer only if there is some data left to send */
	if (!snd_rawmidi_transmit_empty(chip->midi_out) && chip->tinuse) {
		/* The timer will expire slightly after the data has been
		   sent */
		time = (sent << 3) / 25 + 1;	/* 8/25=0.32ms to send a byte */
		mod_timer(&chip->timer, jiffies + (time * HZ + 999) / 1000);
		dev_dbg(chip->card->dev,
			"Timer armed(%d)\n", ((time * HZ + 999) / 1000));
	}
	spin_unlock_irqrestore(&chip->lock, flags);
}


static void snd_echo_midi_output_trigger(struct snd_rawmidi_substream *substream,
					 int up)
{
	struct echoaudio *chip = substream->rmidi->private_data;

	dev_dbg(chip->card->dev, "snd_echo_midi_output_trigger(%d)\n", up);
	spin_lock_irq(&chip->lock);
	if (up) {
		if (!chip->tinuse) {
			init_timer(&chip->timer);
			chip->timer.function = snd_echo_midi_output_write;
			chip->timer.data = (unsigned long)chip;
			chip->tinuse = 1;
		}
	} else {
		if (chip->tinuse) {
			chip->tinuse = 0;
			spin_unlock_irq(&chip->lock);
			del_timer_sync(&chip->timer);
			dev_dbg(chip->card->dev, "Timer removed\n");
			return;
		}
	}
	spin_unlock_irq(&chip->lock);

	if (up && !chip->midi_full)
		snd_echo_midi_output_write((unsigned long)chip);
}


static int snd_echo_midi_output_close(struct snd_rawmidi_substream *substream)
{
	struct echoaudio *chip = substream->rmidi->private_data;

	chip->midi_out = NULL;
	dev_dbg(chip->card->dev, "rawmidi_oclose\n");
	return 0;
}


static struct snd_rawmidi_ops snd_echo_midi_input = {
	.open = snd_echo_midi_input_open,
	.close = snd_echo_midi_input_close,
	.trigger = snd_echo_midi_input_trigger,
};

static struct snd_rawmidi_ops snd_echo_midi_output = {
	.open = snd_echo_midi_output_open,
	.close = snd_echo_midi_output_close,
	.trigger = snd_echo_midi_output_trigger,
};


/* <--snd_echo_probe() */
static int snd_echo_midi_create(struct snd_card *card,
				struct echoaudio *chip)
{
	int err;

	if ((err = snd_rawmidi_new(card, card->shortname, 0, 1, 1,
				   &chip->rmidi)) < 0)
		return err;

	strcpy(chip->rmidi->name, card->shortname);
	chip->rmidi->private_data = chip;

	snd_rawmidi_set_ops(chip->rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
			    &snd_echo_midi_input);
	snd_rawmidi_set_ops(chip->rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
			    &snd_echo_midi_output);

	chip->rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |
		SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX;
	dev_dbg(chip->card->dev, "MIDI ok\n");
	return 0;
}
Commit	Line	Data
dd7b254d GP	1	/****************************************************************************
	2
	3	Copyright Echo Digital Audio Corporation (c) 1998 - 2004
	4	All rights reserved
	5	www.echoaudio.com
	6
	7	This file is part of Echo Digital Audio's generic driver library.
	8
	9	Echo Digital Audio's generic driver library is free software;
	10	you can redistribute it and/or modify it under the terms of
	11	the GNU General Public License as published by the Free Software
	12	Foundation.
	13
	14	This program is distributed in the hope that it will be useful,
	15	but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	GNU General Public License for more details.
	18
	19	You should have received a copy of the GNU General Public License
	20	along with this program; if not, write to the Free Software
	21	Foundation, Inc., 59 Temple Place - Suite 330, Boston,
	22	MA 02111-1307, USA.
	23
	24	*************************************************************************
	25
	26	Translation from C++ and adaptation for use in ALSA-Driver
	27	were made by Giuliano Pochini <pochini@shiny.it>
	28
	29	****************************************************************************/
	30
	31
	32	/******************************************************************************
	33	MIDI lowlevel code
	34	******************************************************************************/
	35
	36	/* Start and stop Midi input */
	37	static int enable_midi_input(struct echoaudio *chip, char enable)
	38	{
b5b4a41b	39	dev_dbg(chip->card->dev, "enable_midi_input(%d)\n", enable);
dd7b254d GP	40
	41	if (wait_handshake(chip))
	42	return -EIO;
	43
	44	if (enable) {
	45	chip->mtc_state = MIDI_IN_STATE_NORMAL;
	46	chip->comm_page->flags \|=
e930e995	47	cpu_to_le32(DSP_FLAG_MIDI_INPUT);
dd7b254d GP	48	} else
dd7b254d GP	49	chip->comm_page->flags &=
e930e995	50	~cpu_to_le32(DSP_FLAG_MIDI_INPUT);
dd7b254d GP	51
	52	clear_handshake(chip);
	53	return send_vector(chip, DSP_VC_UPDATE_FLAGS);
	54	}
	55
	56
	57
	58	/* Send a buffer full of MIDI data to the DSP
	59	Returns how many actually written or < 0 on error */
	60	static int write_midi(struct echoaudio chip, u8 data, int bytes)
	61	{
da3cec35 TI	62	if (snd_BUG_ON(bytes <= 0 \|\| bytes >= MIDI_OUT_BUFFER_SIZE))
da3cec35 TI	63	return -EINVAL;
dd7b254d GP	64
	65	if (wait_handshake(chip))
	66	return -EIO;
	67
	68	/* HF4 indicates that it is safe to write MIDI output data */
	69	if (! (get_dsp_register(chip, CHI32_STATUS_REG) & CHI32_STATUS_REG_HF4))
	70	return 0;
	71
	72	chip->comm_page->midi_output[0] = bytes;
	73	memcpy(&chip->comm_page->midi_output[1], data, bytes);
	74	chip->comm_page->midi_out_free_count = 0;
	75	clear_handshake(chip);
	76	send_vector(chip, DSP_VC_MIDI_WRITE);
b5b4a41b	77	dev_dbg(chip->card->dev, "write_midi: %d\n", bytes);
dd7b254d GP	78	return bytes;
	79	}
	80
	81
	82
	83	/* Run the state machine for MIDI input data
	84	MIDI time code sync isn't supported by this code right now, but you still need
	85	this state machine to parse the incoming MIDI data stream. Every time the DSP
	86	sees a 0xF1 byte come in, it adds the DSP sample position to the MIDI data
	87	stream. The DSP sample position is represented as a 32 bit unsigned value,
	88	with the high 16 bits first, followed by the low 16 bits. Since these aren't
	89	real MIDI bytes, the following logic is needed to skip them. */
	90	static inline int mtc_process_data(struct echoaudio *chip, short midi_byte)
	91	{
	92	switch (chip->mtc_state) {
	93	case MIDI_IN_STATE_NORMAL:
	94	if (midi_byte == 0xF1)
	95	chip->mtc_state = MIDI_IN_STATE_TS_HIGH;
	96	break;
	97	case MIDI_IN_STATE_TS_HIGH:
	98	chip->mtc_state = MIDI_IN_STATE_TS_LOW;
	99	return MIDI_IN_SKIP_DATA;
	100	break;
	101	case MIDI_IN_STATE_TS_LOW:
	102	chip->mtc_state = MIDI_IN_STATE_F1_DATA;
	103	return MIDI_IN_SKIP_DATA;
	104	break;
	105	case MIDI_IN_STATE_F1_DATA:
	106	chip->mtc_state = MIDI_IN_STATE_NORMAL;
	107	break;
	108	}
	109	return 0;
	110	}
	111
	112
	113
	114	/* This function is called from the IRQ handler and it reads the midi data
	115	from the DSP's buffer. It returns the number of bytes received. */
	116	static int midi_service_irq(struct echoaudio *chip)
	117	{
	118	short int count, midi_byte, i, received;
	119
	120	/* The count is at index 0, followed by actual data */
	121	count = le16_to_cpu(chip->comm_page->midi_input[0]);
	122
da3cec35 TI	123	if (snd_BUG_ON(count >= MIDI_IN_BUFFER_SIZE))
da3cec35 TI	124	return 0;
dd7b254d GP	125
	126	/* Get the MIDI data from the comm page */
	127	i = 1;
	128	received = 0;
	129	for (i = 1; i <= count; i++) {
	130	/* Get the MIDI byte */
	131	midi_byte = le16_to_cpu(chip->comm_page->midi_input[i]);
	132
	133	/* Parse the incoming MIDI stream. The incoming MIDI data
	134	consists of MIDI bytes and timestamps for the MIDI time code
	135	0xF1 bytes. mtc_process_data() is a little state machine that
	136	parses the stream. If you get MIDI_IN_SKIP_DATA back, then
	137	this is a timestamp byte, not a MIDI byte, so don't store it
	138	in the MIDI input buffer. */
	139	if (mtc_process_data(chip, midi_byte) == MIDI_IN_SKIP_DATA)
	140	continue;
	141
	142	chip->midi_buffer[received++] = (u8)midi_byte;
	143	}
	144
	145	return received;
	146	}
	147
	148
	149
	150
	151	/******************************************************************************
	152	MIDI interface
	153	******************************************************************************/
	154
	155	static int snd_echo_midi_input_open(struct snd_rawmidi_substream *substream)
	156	{
	157	struct echoaudio *chip = substream->rmidi->private_data;
	158
	159	chip->midi_in = substream;
b5b4a41b	160	dev_dbg(chip->card->dev, "rawmidi_iopen\n");
dd7b254d GP	161	return 0;
	162	}
	163
	164
	165
	166	static void snd_echo_midi_input_trigger(struct snd_rawmidi_substream *substream,
	167	int up)
	168	{
	169	struct echoaudio *chip = substream->rmidi->private_data;
	170
	171	if (up != chip->midi_input_enabled) {
	172	spin_lock_irq(&chip->lock);
	173	enable_midi_input(chip, up);
	174	spin_unlock_irq(&chip->lock);
	175	chip->midi_input_enabled = up;
	176	}
	177	}
	178
	179
	180
	181	static int snd_echo_midi_input_close(struct snd_rawmidi_substream *substream)
	182	{
	183	struct echoaudio *chip = substream->rmidi->private_data;
	184
	185	chip->midi_in = NULL;
b5b4a41b	186	dev_dbg(chip->card->dev, "rawmidi_iclose\n");
dd7b254d GP	187	return 0;
	188	}
	189
	190
	191
	192	static int snd_echo_midi_output_open(struct snd_rawmidi_substream *substream)
	193	{
	194	struct echoaudio *chip = substream->rmidi->private_data;
	195
	196	chip->tinuse = 0;
	197	chip->midi_full = 0;
	198	chip->midi_out = substream;
b5b4a41b	199	dev_dbg(chip->card->dev, "rawmidi_open\n");
dd7b254d GP	200	return 0;
	201	}
	202
	203
	204
	205	static void snd_echo_midi_output_write(unsigned long data)
	206	{
	207	struct echoaudio chip = (struct echoaudio )data;
	208	unsigned long flags;
	209	int bytes, sent, time;
	210	unsigned char buf[MIDI_OUT_BUFFER_SIZE - 1];
	211
b5b4a41b	212	dev_dbg(chip->card->dev, "snd_echo_midi_output_write\n");
dd7b254d GP	213	/* No interrupts are involved: we have to check at regular intervals
	214	if the card's output buffer has room for new data. */
	215	sent = bytes = 0;
	216	spin_lock_irqsave(&chip->lock, flags);
	217	chip->midi_full = 0;
5929546a	218	if (!snd_rawmidi_transmit_empty(chip->midi_out)) {
dd7b254d GP	219	bytes = snd_rawmidi_transmit_peek(chip->midi_out, buf,
dd7b254d GP	220	MIDI_OUT_BUFFER_SIZE - 1);
b5b4a41b	221	dev_dbg(chip->card->dev, "Try to send %d bytes...\n", bytes);
dd7b254d GP	222	sent = write_midi(chip, buf, bytes);
dd7b254d GP	223	if (sent < 0) {
ece7a36d TI	224	dev_err(chip->card->dev,
ece7a36d TI	225	"write_midi() error %d\n", sent);
dd7b254d GP	226	/* retry later */
	227	sent = 9000;
	228	chip->midi_full = 1;
	229	} else if (sent > 0) {
b5b4a41b	230	dev_dbg(chip->card->dev, "%d bytes sent\n", sent);
dd7b254d GP	231	snd_rawmidi_transmit_ack(chip->midi_out, sent);
	232	} else {
	233	/* Buffer is full. DSP's internal buffer is 64 (128 ?)
	234	bytes long. Let's wait until half of them are sent */
b5b4a41b	235	dev_dbg(chip->card->dev, "Full\n");
dd7b254d GP	236	sent = 32;
	237	chip->midi_full = 1;
	238	}
	239	}
	240
	241	/* We restart the timer only if there is some data left to send */
	242	if (!snd_rawmidi_transmit_empty(chip->midi_out) && chip->tinuse) {
	243	/* The timer will expire slightly after the data has been
	244	sent */
	245	time = (sent << 3) / 25 + 1; /* 8/25=0.32ms to send a byte */
	246	mod_timer(&chip->timer, jiffies + (time * HZ + 999) / 1000);
b5b4a41b SM	247	dev_dbg(chip->card->dev,
b5b4a41b SM	248	"Timer armed(%d)\n", ((time * HZ + 999) / 1000));
dd7b254d GP	249	}
	250	spin_unlock_irqrestore(&chip->lock, flags);
	251	}
	252
	253
	254
	255	static void snd_echo_midi_output_trigger(struct snd_rawmidi_substream *substream,
	256	int up)
	257	{
	258	struct echoaudio *chip = substream->rmidi->private_data;
	259
b5b4a41b	260	dev_dbg(chip->card->dev, "snd_echo_midi_output_trigger(%d)\n", up);
dd7b254d GP	261	spin_lock_irq(&chip->lock);
	262	if (up) {
	263	if (!chip->tinuse) {
	264	init_timer(&chip->timer);
	265	chip->timer.function = snd_echo_midi_output_write;
	266	chip->timer.data = (unsigned long)chip;
	267	chip->tinuse = 1;
	268	}
	269	} else {
	270	if (chip->tinuse) {
dd7b254d	271	chip->tinuse = 0;
5929546a GP	272	spin_unlock_irq(&chip->lock);
5929546a GP	273	del_timer_sync(&chip->timer);
b5b4a41b	274	dev_dbg(chip->card->dev, "Timer removed\n");
5929546a	275	return;
dd7b254d GP	276	}
	277	}
	278	spin_unlock_irq(&chip->lock);
	279
	280	if (up && !chip->midi_full)
	281	snd_echo_midi_output_write((unsigned long)chip);
	282	}
	283
	284
	285
	286	static int snd_echo_midi_output_close(struct snd_rawmidi_substream *substream)
	287	{
	288	struct echoaudio *chip = substream->rmidi->private_data;
	289
	290	chip->midi_out = NULL;
b5b4a41b	291	dev_dbg(chip->card->dev, "rawmidi_oclose\n");
dd7b254d GP	292	return 0;
	293	}
	294
	295
	296
	297	static struct snd_rawmidi_ops snd_echo_midi_input = {
	298	.open = snd_echo_midi_input_open,
	299	.close = snd_echo_midi_input_close,
	300	.trigger = snd_echo_midi_input_trigger,
	301	};
	302
	303	static struct snd_rawmidi_ops snd_echo_midi_output = {
	304	.open = snd_echo_midi_output_open,
	305	.close = snd_echo_midi_output_close,
	306	.trigger = snd_echo_midi_output_trigger,
	307	};
	308
	309
	310
	311	/* <--snd_echo_probe() */
e23e7a14 BP	312	static int snd_echo_midi_create(struct snd_card *card,
e23e7a14 BP	313	struct echoaudio *chip)
dd7b254d GP	314	{
	315	int err;
	316
	317	if ((err = snd_rawmidi_new(card, card->shortname, 0, 1, 1,
	318	&chip->rmidi)) < 0)
	319	return err;
	320
	321	strcpy(chip->rmidi->name, card->shortname);
	322	chip->rmidi->private_data = chip;
	323
	324	snd_rawmidi_set_ops(chip->rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
	325	&snd_echo_midi_input);
	326	snd_rawmidi_set_ops(chip->rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
	327	&snd_echo_midi_output);
	328
	329	chip->rmidi->info_flags \|= SNDRV_RAWMIDI_INFO_OUTPUT \|
	330	SNDRV_RAWMIDI_INFO_INPUT \| SNDRV_RAWMIDI_INFO_DUPLEX;
b5b4a41b	331	dev_dbg(chip->card->dev, "MIDI ok\n");
dd7b254d GP	332	return 0;
dd7b254d GP	333	}