Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 795 insertions, 0 deletions

diff --git a/sound/drivers/mtpav.c b/sound/drivers/mtpav.c
new file mode 100644
index 000000000000..1280a57c49eb
--- /dev/null
+++ b/sound/drivers/mtpav.c
@@ -0,0 +1,795 @@
+/*
+ *      MOTU Midi Timepiece ALSA Main routines
+ *      Copyright by Michael T. Mayers (c) Jan 09, 2000
+ *      mail: michael@tweakoz.com
+ *      Thanks to John Galbraith
+ *
+ *      This program 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; either version 2 of the License, or
+ *      (at your option) any later version.
+ *
+ *      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
+ *
+ *
+ *      This driver is for the 'Mark Of The Unicorn' (MOTU)
+ *      MidiTimePiece AV multiport MIDI interface 
+ *
+ *      IOPORTS
+ *      -------
+ *      8 MIDI Ins and 8 MIDI outs
+ *      Video Sync In (BNC), Word Sync Out (BNC), 
+ *      ADAT Sync Out (DB9)
+ *      SMPTE in/out (1/4")
+ *      2 programmable pedal/footswitch inputs and 4 programmable MIDI controller knobs.
+ *      Macintosh RS422 serial port
+ *      RS422 "network" port for ganging multiple MTP's
+ *      PC Parallel Port ( which this driver currently uses )
+ *
+ *      MISC FEATURES
+ *      -------------
+ *      Hardware MIDI routing, merging, and filtering   
+ *      MIDI Synchronization to Video, ADAT, SMPTE and other Clock sources
+ *      128 'scene' memories, recallable from MIDI program change
+ *
+ *
+ * ChangeLog
+ * Jun 11 2001  Takashi Iwai <tiwai@suse.de>
+ *      - Recoded & debugged
+ *      - Added timer interrupt for midi outputs
+ *      - hwports is between 1 and 8, which specifies the number of hardware ports.
+ *        The three global ports, computer, adat and broadcast ports, are created
+ *        always after h/w and remote ports.
+ *
+ */
+
+#include <sound/driver.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/moduleparam.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/rawmidi.h>
+#include <linux/delay.h>
+
+#include <asm/io.h>
+
+/*
+ *      globals
+ */
+MODULE_AUTHOR("Michael T. Mayers");
+MODULE_DESCRIPTION("MOTU MidiTimePiece AV multiport MIDI");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{MOTU,MidiTimePiece AV multiport MIDI}}");
+
+// io resources
+#define MTPAV_IOBASE            0x378
+#define MTPAV_IRQ               7
+#define MTPAV_MAX_PORTS         8
+
+static int index = SNDRV_DEFAULT_IDX1;
+static char *id = SNDRV_DEFAULT_STR1;
+static long port = MTPAV_IOBASE;        /* 0x378, 0x278 */
+static int irq = MTPAV_IRQ;             /* 7, 5 */
+static int hwports = MTPAV_MAX_PORTS;   /* use hardware ports 1-8 */
+
+module_param(index, int, 0444);
+MODULE_PARM_DESC(index, "Index value for MotuMTPAV MIDI.");
+module_param(id, charp, 0444);
+MODULE_PARM_DESC(id, "ID string for MotuMTPAV MIDI.");
+module_param(port, long, 0444);
+MODULE_PARM_DESC(port, "Parallel port # for MotuMTPAV MIDI.");
+module_param(irq, int, 0444);
+MODULE_PARM_DESC(irq, "Parallel IRQ # for MotuMTPAV MIDI.");
+module_param(hwports, int, 0444);
+MODULE_PARM_DESC(hwports, "Hardware ports # for MotuMTPAV MIDI.");
+
+/*
+ *      defines
+ */
+//#define USE_FAKE_MTP //       don't actually read/write to MTP device (for debugging without an actual unit) (does not work yet)
+
+// parallel port usage masks
+#define SIGS_BYTE 0x08
+#define SIGS_RFD 0x80
+#define SIGS_IRQ 0x40
+#define SIGS_IN0 0x10
+#define SIGS_IN1 0x20
+
+#define SIGC_WRITE 0x04
+#define SIGC_READ 0x08
+#define SIGC_INTEN 0x10
+
+#define DREG 0
+#define SREG 1
+#define CREG 2
+
+//
+#define MTPAV_MODE_INPUT_OPENED         0x01
+#define MTPAV_MODE_OUTPUT_OPENED        0x02
+#define MTPAV_MODE_INPUT_TRIGGERED      0x04
+#define MTPAV_MODE_OUTPUT_TRIGGERED     0x08
+
+#define NUMPORTS (0x12+1)
+
+
+/*
+ */
+
+typedef struct mtpav_port {
+        u8 number;
+        u8 hwport;
+        u8 mode;
+        u8 running_status;
+        snd_rawmidi_substream_t *input;
+        snd_rawmidi_substream_t *output;
+} mtpav_port_t;
+
+typedef struct mtpav {
+        snd_card_t *card;
+        unsigned long port;
+        struct resource *res_port;
+        int irq;                        /* interrupt (for inputs) */
+        spinlock_t spinlock;
+        int share_irq;                  /* number of accesses to input interrupts */
+        int istimer;                    /* number of accesses to timer interrupts */
+        struct timer_list timer;        /* timer interrupts for outputs */
+        snd_rawmidi_t *rmidi;
+        int num_ports;          /* number of hw ports (1-8) */
+        mtpav_port_t ports[NUMPORTS];   /* all ports including computer, adat and bc */
+
+        u32 inmidiport;         /* selected input midi port */
+        u32 inmidistate;        /* during midi command 0xf5 */
+
+        u32 outmidihwport;      /* selected output midi hw port */
+} mtpav_t;
+
+
+/*
+ * global instance
+ * hey, we handle at most only one card..
+ */
+static mtpav_t *mtp_card;
+
+/*
+ * possible hardware ports (selected by 0xf5 port message)
+ *      0x00            all ports
+ *      0x01 .. 0x08    this MTP's ports 1..8
+ *      0x09 .. 0x10    networked MTP's ports (9..16)
+ *      0x11            networked MTP's computer port
+ *      0x63            to ADAT
+ *
+ * mappig:
+ *  subdevice 0 - (X-1)    ports
+ *            X - (2*X-1)  networked ports
+ *            X            computer
+ *            X+1          ADAT
+ *            X+2          all ports
+ *
+ *  where X = chip->num_ports
+ */
+
+#define MTPAV_PIDX_COMPUTER     0
+#define MTPAV_PIDX_ADAT         1
+#define MTPAV_PIDX_BROADCAST    2
+
+
+static int translate_subdevice_to_hwport(mtpav_t *chip, int subdev)
+{
+        if (subdev < 0)
+                return 0x01; /* invalid - use port 0 as default */
+        else if (subdev < chip->num_ports)
+                return subdev + 1; /* single mtp port */
+        else if (subdev < chip->num_ports * 2)
+                return subdev - chip->num_ports + 0x09; /* remote port */
+        else if (subdev == chip->num_ports * 2 + MTPAV_PIDX_COMPUTER)
+                return 0x11; /* computer port */
+        else if (subdev == chip->num_ports + MTPAV_PIDX_ADAT)
+                return 0x63;            /* ADAT */
+        return 0; /* all ports */
+}
+
+static int translate_hwport_to_subdevice(mtpav_t *chip, int hwport)
+{
+        int p;
+        if (hwport <= 0x00) /* all ports */
+                return chip->num_ports + MTPAV_PIDX_BROADCAST;
+        else if (hwport <= 0x08) { /* single port */
+                p = hwport - 1;
+                if (p >= chip->num_ports)
+                        p = 0;
+                return p;
+        } else if (hwport <= 0x10) { /* remote port */
+                p = hwport - 0x09 + chip->num_ports;
+                if (p >= chip->num_ports * 2)
+                        p = chip->num_ports;
+                return p;
+        } else if (hwport == 0x11)  /* computer port */
+                return chip->num_ports + MTPAV_PIDX_COMPUTER;
+        else  /* ADAT */
+                return chip->num_ports + MTPAV_PIDX_ADAT;
+}
+
+
+/*
+ */
+
+static u8 snd_mtpav_getreg(mtpav_t *chip, u16 reg)
+{
+        u8 rval = 0;
+
+        if (reg == SREG) {
+                rval = inb(chip->port + SREG);
+                rval = (rval & 0xf8);
+        } else if (reg == CREG) {
+                rval = inb(chip->port + CREG);
+                rval = (rval & 0x1c);
+        }
+
+        return rval;
+}
+
+/*
+ */
+
+static void snd_mtpav_mputreg(mtpav_t *chip, u16 reg, u8 val)
+{
+        if (reg == DREG) {
+                outb(val, chip->port + DREG);
+        } else if (reg == CREG) {
+                outb(val, chip->port + CREG);
+        }
+}
+
+/*
+ */
+
+static void snd_mtpav_wait_rfdhi(mtpav_t *chip)
+{
+        int counts = 10000;
+        u8 sbyte;
+
+        sbyte = snd_mtpav_getreg(chip, SREG);
+        while (!(sbyte & SIGS_RFD) && counts--) {
+                sbyte = snd_mtpav_getreg(chip, SREG);
+                udelay(10);
+        }
+}
+
+static void snd_mtpav_send_byte(mtpav_t *chip, u8 byte)
+{
+        u8 tcbyt;
+        u8 clrwrite;
+        u8 setwrite;
+
+        snd_mtpav_wait_rfdhi(chip);
+
+        /////////////////
+
+        tcbyt = snd_mtpav_getreg(chip, CREG);
+        clrwrite = tcbyt & (SIGC_WRITE ^ 0xff);
+        setwrite = tcbyt | SIGC_WRITE;
+
+        snd_mtpav_mputreg(chip, DREG, byte);
+        snd_mtpav_mputreg(chip, CREG, clrwrite);        // clear write bit
+
+        snd_mtpav_mputreg(chip, CREG, setwrite);        // set write bit
+
+}
+
+
+/*
+ */
+
+/* call this with spin lock held */
+static void snd_mtpav_output_port_write(mtpav_port_t *port,
+                                        snd_rawmidi_substream_t *substream)
+{
+        u8 outbyte;
+
+        // Get the outbyte first, so we can emulate running status if
+        // necessary
+        if (snd_rawmidi_transmit(substream, &outbyte, 1) != 1)
+                return;
+
+        // send port change command if necessary
+
+        if (port->hwport != mtp_card->outmidihwport) {
+                mtp_card->outmidihwport = port->hwport;
+
+                snd_mtpav_send_byte(mtp_card, 0xf5);
+                snd_mtpav_send_byte(mtp_card, port->hwport);
+                //snd_printk("new outport: 0x%x\n", (unsigned int) port->hwport);
+
+                if (!(outbyte & 0x80) && port->running_status)
+                        snd_mtpav_send_byte(mtp_card, port->running_status);
+        }
+
+        // send data
+
+        do {
+                if (outbyte & 0x80)
+                        port->running_status = outbyte;
+                
+                snd_mtpav_send_byte(mtp_card, outbyte);
+        } while (snd_rawmidi_transmit(substream, &outbyte, 1) == 1);
+}
+
+static void snd_mtpav_output_write(snd_rawmidi_substream_t * substream)
+{
+        mtpav_port_t *port = &mtp_card->ports[substream->number];
+        unsigned long flags;
+
+        spin_lock_irqsave(&mtp_card->spinlock, flags);
+        snd_mtpav_output_port_write(port, substream);
+        spin_unlock_irqrestore(&mtp_card->spinlock, flags);
+}
+
+
+/*
+ *      mtpav control
+ */
+
+static void snd_mtpav_portscan(mtpav_t *chip)   // put mtp into smart routing mode
+{
+        u8 p;
+
+        for (p = 0; p < 8; p++) {
+                snd_mtpav_send_byte(chip, 0xf5);
+                snd_mtpav_send_byte(chip, p);
+                snd_mtpav_send_byte(chip, 0xfe);
+        }
+}
+
+/*
+ */
+
+static int snd_mtpav_input_open(snd_rawmidi_substream_t * substream)
+{
+        unsigned long flags;
+        mtpav_port_t *portp = &mtp_card->ports[substream->number];
+
+        //printk("mtpav port: %d opened\n", (int) substream->number);
+        spin_lock_irqsave(&mtp_card->spinlock, flags);
+        portp->mode |= MTPAV_MODE_INPUT_OPENED;
+        portp->input = substream;
+        if (mtp_card->share_irq++ == 0)
+                snd_mtpav_mputreg(mtp_card, CREG, (SIGC_INTEN | SIGC_WRITE));   // enable pport interrupts
+        spin_unlock_irqrestore(&mtp_card->spinlock, flags);
+        return 0;
+}
+
+/*
+ */
+
+static int snd_mtpav_input_close(snd_rawmidi_substream_t *substream)
+{
+        unsigned long flags;
+        mtpav_port_t *portp = &mtp_card->ports[substream->number];
+
+        //printk("mtpav port: %d closed\n", (int) portp);
+
+        spin_lock_irqsave(&mtp_card->spinlock, flags);
+
+        portp->mode &= (~MTPAV_MODE_INPUT_OPENED);
+        portp->input = NULL;
+        if (--mtp_card->share_irq == 0)
+                snd_mtpav_mputreg(mtp_card, CREG, 0);   // disable pport interrupts
+
+        spin_unlock_irqrestore(&mtp_card->spinlock, flags);
+        return 0;
+}
+
+/*
+ */
+
+static void snd_mtpav_input_trigger(snd_rawmidi_substream_t * substream, int up)
+{
+        unsigned long flags;
+        mtpav_port_t *portp = &mtp_card->ports[substream->number];
+
+        spin_lock_irqsave(&mtp_card->spinlock, flags);
+        if (up)
+                portp->mode |= MTPAV_MODE_INPUT_TRIGGERED;
+        else
+                portp->mode &= ~MTPAV_MODE_INPUT_TRIGGERED;
+        spin_unlock_irqrestore(&mtp_card->spinlock, flags);
+
+}
+
+
+/*
+ * timer interrupt for outputs
+ */
+
+static void snd_mtpav_output_timer(unsigned long data)
+{
+        unsigned long flags;
+        mtpav_t *chip = (mtpav_t *)data;
+        int p;
+
+        spin_lock_irqsave(&chip->spinlock, flags);
+        /* reprogram timer */
+        chip->timer.expires = 1 + jiffies;
+        add_timer(&chip->timer);
+        /* process each port */
+        for (p = 0; p <= chip->num_ports * 2 + MTPAV_PIDX_BROADCAST; p++) {
+                mtpav_port_t *portp = &mtp_card->ports[p];
+                if ((portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED) && portp->output)
+                        snd_mtpav_output_port_write(portp, portp->output);
+        }
+        spin_unlock_irqrestore(&chip->spinlock, flags);
+}
+
+/* spinlock held! */
+static void snd_mtpav_add_output_timer(mtpav_t *chip)
+{
+        init_timer(&chip->timer);
+        chip->timer.function = snd_mtpav_output_timer;
+        chip->timer.data = (unsigned long) mtp_card;
+        chip->timer.expires = 1 + jiffies;
+        add_timer(&chip->timer);
+}
+
+/* spinlock held! */
+static void snd_mtpav_remove_output_timer(mtpav_t *chip)
+{
+        del_timer(&chip->timer);
+}
+
+/*
+ */
+
+static int snd_mtpav_output_open(snd_rawmidi_substream_t * substream)
+{
+        unsigned long flags;
+        mtpav_port_t *portp = &mtp_card->ports[substream->number];
+
+        spin_lock_irqsave(&mtp_card->spinlock, flags);
+        portp->mode |= MTPAV_MODE_OUTPUT_OPENED;
+        portp->output = substream;
+        spin_unlock_irqrestore(&mtp_card->spinlock, flags);
+        return 0;
+};
+
+/*
+ */
+
+static int snd_mtpav_output_close(snd_rawmidi_substream_t * substream)
+{
+        unsigned long flags;
+        mtpav_port_t *portp = &mtp_card->ports[substream->number];
+
+        spin_lock_irqsave(&mtp_card->spinlock, flags);
+        portp->mode &= (~MTPAV_MODE_OUTPUT_OPENED);
+        portp->output = NULL;
+        spin_unlock_irqrestore(&mtp_card->spinlock, flags);
+        return 0;
+};
+
+/*
+ */
+
+static void snd_mtpav_output_trigger(snd_rawmidi_substream_t * substream, int up)
+{
+        unsigned long flags;
+        mtpav_port_t *portp = &mtp_card->ports[substream->number];
+
+        spin_lock_irqsave(&mtp_card->spinlock, flags);
+        if (up) {
+                if (! (portp->mode  & MTPAV_MODE_OUTPUT_TRIGGERED)) {
+                        if (mtp_card->istimer++ == 0)
+                                snd_mtpav_add_output_timer(mtp_card);
+                        portp->mode |= MTPAV_MODE_OUTPUT_TRIGGERED;
+                }
+        } else {
+                portp->mode &= ~MTPAV_MODE_OUTPUT_TRIGGERED;
+                if (--mtp_card->istimer == 0)
+                        snd_mtpav_remove_output_timer(mtp_card);
+        }
+        spin_unlock_irqrestore(&mtp_card->spinlock, flags);
+
+        if (up)
+                snd_mtpav_output_write(substream);
+}
+
+/*
+ * midi interrupt for inputs
+ */
+
+static void snd_mtpav_inmidi_process(mtpav_t *mcrd, u8 inbyte)
+{
+        mtpav_port_t *portp;
+
+        if ((int)mcrd->inmidiport > mcrd->num_ports * 2 + MTPAV_PIDX_BROADCAST)
+                return;
+
+        portp = &mcrd->ports[mcrd->inmidiport];
+        if (portp->mode & MTPAV_MODE_INPUT_TRIGGERED) {
+                snd_rawmidi_receive(portp->input, &inbyte, 1);
+        }
+}
+
+static void snd_mtpav_inmidi_h(mtpav_t * mcrd, u8 inbyte)
+{
+        snd_assert(mcrd, return);
+
+        if (inbyte >= 0xf8) {
+                /* real-time midi code */
+                snd_mtpav_inmidi_process(mcrd, inbyte);
+                return;
+        }
+
+        if (mcrd->inmidistate == 0) {   // awaiting command
+                if (inbyte == 0xf5)     // MTP port #
+                        mcrd->inmidistate = 1;
+                else
+                        snd_mtpav_inmidi_process(mcrd, inbyte);
+        } else if (mcrd->inmidistate) {
+                mcrd->inmidiport = translate_hwport_to_subdevice(mcrd, inbyte);
+                mcrd->inmidistate = 0;
+        }
+}
+
+static void snd_mtpav_read_bytes(mtpav_t * mcrd)
+{
+        u8 clrread, setread;
+        u8 mtp_read_byte;
+        u8 sr, cbyt;
+        int i;
+
+        u8 sbyt = snd_mtpav_getreg(mcrd, SREG);
+
+        //printk("snd_mtpav_read_bytes() sbyt: 0x%x\n", sbyt);
+
+        if (!(sbyt & SIGS_BYTE))
+                return;
+
+        cbyt = snd_mtpav_getreg(mcrd, CREG);
+        clrread = cbyt & (SIGC_READ ^ 0xff);
+        setread = cbyt | SIGC_READ;
+
+        do {
+
+                mtp_read_byte = 0;
+                for (i = 0; i < 4; i++) {
+                        snd_mtpav_mputreg(mcrd, CREG, setread);
+                        sr = snd_mtpav_getreg(mcrd, SREG);
+                        snd_mtpav_mputreg(mcrd, CREG, clrread);
+
+                        sr &= SIGS_IN0 | SIGS_IN1;
+                        sr >>= 4;
+                        mtp_read_byte |= sr << (i * 2);
+                }
+
+                snd_mtpav_inmidi_h(mcrd, mtp_read_byte);
+
+                sbyt = snd_mtpav_getreg(mcrd, SREG);
+
+        } while (sbyt & SIGS_BYTE);
+}
+
+static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id, struct pt_regs *regs)
+{
+        mtpav_t *mcard = dev_id;
+
+        //printk("irqh()\n");
+        spin_lock(&mcard->spinlock);
+        snd_mtpav_read_bytes(mcard);
+        spin_unlock(&mcard->spinlock);
+        return IRQ_HANDLED;
+}
+
+/*
+ * get ISA resources
+ */
+static int snd_mtpav_get_ISA(mtpav_t * mcard)
+{
+        if ((mcard->res_port = request_region(port, 3, "MotuMTPAV MIDI")) == NULL) {
+                snd_printk("MTVAP port 0x%lx is busy\n", port);
+                return -EBUSY;
+        }
+        mcard->port = port;
+        if (request_irq(irq, snd_mtpav_irqh, SA_INTERRUPT, "MOTU MTPAV", (void *)mcard)) {
+                snd_printk("MTVAP IRQ %d busy\n", irq);
+                return -EBUSY;
+        }
+        mcard->irq = irq;
+        return 0;
+}
+
+
+/*
+ */
+
+static snd_rawmidi_ops_t snd_mtpav_output = {
+        .open =         snd_mtpav_output_open,
+        .close =        snd_mtpav_output_close,
+        .trigger =      snd_mtpav_output_trigger,
+};
+
+static snd_rawmidi_ops_t snd_mtpav_input = {
+        .open =         snd_mtpav_input_open,
+        .close =        snd_mtpav_input_close,
+        .trigger =      snd_mtpav_input_trigger,
+};
+
+
+/*
+ * get RAWMIDI resources
+ */
+
+static void snd_mtpav_set_name(mtpav_t *chip, snd_rawmidi_substream_t *substream)
+{
+        if (substream->number >= 0 && substream->number < chip->num_ports)
+                sprintf(substream->name, "MTP direct %d", (substream->number % chip->num_ports) + 1);
+        else if (substream->number >= 8 && substream->number < chip->num_ports * 2)
+                sprintf(substream->name, "MTP remote %d", (substream->number % chip->num_ports) + 1);
+        else if (substream->number == chip->num_ports * 2)
+                strcpy(substream->name, "MTP computer");
+        else if (substream->number == chip->num_ports * 2 + 1)
+                strcpy(substream->name, "MTP ADAT");
+        else
+                strcpy(substream->name, "MTP broadcast");
+}
+
+static int snd_mtpav_get_RAWMIDI(mtpav_t * mcard)
+{
+        int rval = 0;
+        snd_rawmidi_t *rawmidi;
+        snd_rawmidi_substream_t *substream;
+        struct list_head *list;
+
+        //printk("entering snd_mtpav_get_RAWMIDI\n");
+
+        if (hwports < 1)
+                mcard->num_ports = 1;
+        else if (hwports > 8)
+                mcard->num_ports = 8;
+        else
+                mcard->num_ports = hwports;
+
+        if ((rval = snd_rawmidi_new(mcard->card, "MotuMIDI", 0,
+                                    mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
+                                    mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
+                                    &mcard->rmidi)) < 0)
+                return rval;
+        rawmidi = mcard->rmidi;
+
+        list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
+                substream = list_entry(list, snd_rawmidi_substream_t, list);
+                snd_mtpav_set_name(mcard, substream);
+                substream->ops = &snd_mtpav_input;
+        }
+        list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
+                substream = list_entry(list, snd_rawmidi_substream_t, list);
+                snd_mtpav_set_name(mcard, substream);
+                substream->ops = &snd_mtpav_output;
+                mcard->ports[substream->number].hwport = translate_subdevice_to_hwport(mcard, substream->number);
+        }
+        rawmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT |
+                               SNDRV_RAWMIDI_INFO_DUPLEX;
+        sprintf(rawmidi->name, "MTP AV MIDI");
+        //printk("exiting snd_mtpav_get_RAWMIDI() \n");
+        return 0;
+}
+
+/*
+ */
+
+static mtpav_t *new_mtpav(void)
+{
+        mtpav_t *ncrd = kcalloc(1, sizeof(*ncrd), GFP_KERNEL);
+        if (ncrd != NULL) {
+                spin_lock_init(&ncrd->spinlock);
+
+                init_timer(&ncrd->timer);
+                ncrd->card = NULL;
+                ncrd->irq = -1;
+                ncrd->share_irq = 0;
+
+                ncrd->inmidiport = 0xffffffff;
+                ncrd->inmidistate = 0;
+                ncrd->outmidihwport = 0xffffffff;
+        }
+        return ncrd;
+}
+
+/*
+ */
+
+static void free_mtpav(mtpav_t * crd)
+{
+        unsigned long flags;
+
+        spin_lock_irqsave(&crd->spinlock, flags);
+        if (crd->istimer > 0)
+                snd_mtpav_remove_output_timer(crd);
+        spin_unlock_irqrestore(&crd->spinlock, flags);
+        if (crd->irq >= 0)
+                free_irq(crd->irq, (void *)crd);
+        if (crd->res_port) {
+                release_resource(crd->res_port);
+                kfree_nocheck(crd->res_port);
+        }
+        kfree(crd);
+}
+
+/*
+ */
+
+static int __init alsa_card_mtpav_init(void)
+{
+        int err = 0;
+        char longname_buffer[80];
+
+        mtp_card = new_mtpav();
+        if (mtp_card == NULL)
+                return -ENOMEM;
+
+        mtp_card->card = snd_card_new(index, id, THIS_MODULE, 0);
+        if (mtp_card->card == NULL) {
+                free_mtpav(mtp_card);
+                return -ENOMEM;
+        }
+
+        err = snd_mtpav_get_ISA(mtp_card);
+        //printk("snd_mtpav_get_ISA returned: %d\n", err);
+        if (err < 0)
+                goto __error;
+
+        strcpy(mtp_card->card->driver, "MTPAV");
+        strcpy(mtp_card->card->shortname, "MTPAV on parallel port");
+        memset(longname_buffer, 0, sizeof(longname_buffer));
+        sprintf(longname_buffer, "MTPAV on parallel port at");
+
+        err = snd_mtpav_get_RAWMIDI(mtp_card);
+        //snd_printk("snd_mtapv_get_RAWMIDI returned: %d\n", err);
+        if (err < 0)
+                goto __error;
+
+        err = snd_card_register(mtp_card->card);        // don't snd_card_register until AFTER all cards reources done!
+
+        //printk("snd_card_register returned %d\n", err);
+        if (err < 0)
+                goto __error;
+
+
+        snd_mtpav_portscan(mtp_card);
+
+        printk(KERN_INFO "Motu MidiTimePiece on parallel port irq: %d ioport: 0x%lx\n", irq, port);
+
+        return 0;
+
+      __error:
+        snd_card_free(mtp_card->card);
+        free_mtpav(mtp_card);
+        return err;
+}
+
+/*
+ */
+
+static void __exit alsa_card_mtpav_exit(void)
+{
+        if (mtp_card == NULL)
+                return;
+        if (mtp_card->card)
+                snd_card_free(mtp_card->card);
+        free_mtpav(mtp_card);
+}
+
+/*
+ */
+
+module_init(alsa_card_mtpav_init)
+module_exit(alsa_card_mtpav_exit)