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-rw-r--r--sound/drivers/mtpav.c786
1 files changed, 786 insertions, 0 deletions
diff --git a/sound/drivers/mtpav.c b/sound/drivers/mtpav.c
new file mode 100644
index 000000000..547662e02
--- /dev/null
+++ b/sound/drivers/mtpav.c
@@ -0,0 +1,786 @@
+/*
+ * 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 <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+#include <linux/moduleparam.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/rawmidi.h>
+#include <linux/delay.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_hw(port, long, ioport, 0444);
+MODULE_PARM_DESC(port, "Parallel port # for MotuMTPAV MIDI.");
+module_param_hw(irq, int, irq, 0444);
+MODULE_PARM_DESC(irq, "Parallel IRQ # for MotuMTPAV MIDI.");
+module_param(hwports, int, 0444);
+MODULE_PARM_DESC(hwports, "Hardware ports # for MotuMTPAV MIDI.");
+
+static struct platform_device *device;
+
+/*
+ * 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)
+
+
+/*
+ */
+
+struct mtpav_port {
+ u8 number;
+ u8 hwport;
+ u8 mode;
+ u8 running_status;
+ struct snd_rawmidi_substream *input;
+ struct snd_rawmidi_substream *output;
+};
+
+struct mtpav {
+ struct snd_card *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 */
+ struct snd_rawmidi *rmidi;
+ int num_ports; /* number of hw ports (1-8) */
+ struct mtpav_port 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 */
+};
+
+
+/*
+ * 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(struct mtpav *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(struct mtpav *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(struct mtpav *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 inline void snd_mtpav_mputreg(struct mtpav *chip, u16 reg, u8 val)
+{
+ if (reg == DREG || reg == CREG)
+ outb(val, chip->port + reg);
+}
+
+/*
+ */
+
+static void snd_mtpav_wait_rfdhi(struct mtpav *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(struct mtpav *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(struct mtpav *mtp_card,
+ struct mtpav_port *portp,
+ struct snd_rawmidi_substream *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 (portp->hwport != mtp_card->outmidihwport) {
+ mtp_card->outmidihwport = portp->hwport;
+
+ snd_mtpav_send_byte(mtp_card, 0xf5);
+ snd_mtpav_send_byte(mtp_card, portp->hwport);
+ /*
+ snd_printk(KERN_DEBUG "new outport: 0x%x\n",
+ (unsigned int) portp->hwport);
+ */
+ if (!(outbyte & 0x80) && portp->running_status)
+ snd_mtpav_send_byte(mtp_card, portp->running_status);
+ }
+
+ // send data
+
+ do {
+ if (outbyte & 0x80)
+ portp->running_status = outbyte;
+
+ snd_mtpav_send_byte(mtp_card, outbyte);
+ } while (snd_rawmidi_transmit(substream, &outbyte, 1) == 1);
+}
+
+static void snd_mtpav_output_write(struct snd_rawmidi_substream *substream)
+{
+ struct mtpav *mtp_card = substream->rmidi->private_data;
+ struct mtpav_port *portp = &mtp_card->ports[substream->number];
+ unsigned long flags;
+
+ spin_lock_irqsave(&mtp_card->spinlock, flags);
+ snd_mtpav_output_port_write(mtp_card, portp, substream);
+ spin_unlock_irqrestore(&mtp_card->spinlock, flags);
+}
+
+
+/*
+ * mtpav control
+ */
+
+static void snd_mtpav_portscan(struct mtpav *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(struct snd_rawmidi_substream *substream)
+{
+ struct mtpav *mtp_card = substream->rmidi->private_data;
+ struct mtpav_port *portp = &mtp_card->ports[substream->number];
+ unsigned long flags;
+
+ 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(struct snd_rawmidi_substream *substream)
+{
+ struct mtpav *mtp_card = substream->rmidi->private_data;
+ struct mtpav_port *portp = &mtp_card->ports[substream->number];
+ unsigned long flags;
+
+ 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(struct snd_rawmidi_substream *substream, int up)
+{
+ struct mtpav *mtp_card = substream->rmidi->private_data;
+ struct mtpav_port *portp = &mtp_card->ports[substream->number];
+ unsigned long flags;
+
+ 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(struct timer_list *t)
+{
+ unsigned long flags;
+ struct mtpav *chip = from_timer(chip, t, timer);
+ int p;
+
+ spin_lock_irqsave(&chip->spinlock, flags);
+ /* reprogram timer */
+ mod_timer(&chip->timer, 1 + jiffies);
+ /* process each port */
+ for (p = 0; p <= chip->num_ports * 2 + MTPAV_PIDX_BROADCAST; p++) {
+ struct mtpav_port *portp = &chip->ports[p];
+ if ((portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED) && portp->output)
+ snd_mtpav_output_port_write(chip, portp, portp->output);
+ }
+ spin_unlock_irqrestore(&chip->spinlock, flags);
+}
+
+/* spinlock held! */
+static void snd_mtpav_add_output_timer(struct mtpav *chip)
+{
+ mod_timer(&chip->timer, 1 + jiffies);
+}
+
+/* spinlock held! */
+static void snd_mtpav_remove_output_timer(struct mtpav *chip)
+{
+ del_timer(&chip->timer);
+}
+
+/*
+ */
+
+static int snd_mtpav_output_open(struct snd_rawmidi_substream *substream)
+{
+ struct mtpav *mtp_card = substream->rmidi->private_data;
+ struct mtpav_port *portp = &mtp_card->ports[substream->number];
+ unsigned long flags;
+
+ 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(struct snd_rawmidi_substream *substream)
+{
+ struct mtpav *mtp_card = substream->rmidi->private_data;
+ struct mtpav_port *portp = &mtp_card->ports[substream->number];
+ unsigned long flags;
+
+ 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(struct snd_rawmidi_substream *substream, int up)
+{
+ struct mtpav *mtp_card = substream->rmidi->private_data;
+ struct mtpav_port *portp = &mtp_card->ports[substream->number];
+ unsigned long flags;
+
+ 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(struct mtpav *mcrd, u8 inbyte)
+{
+ struct mtpav_port *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(struct mtpav *mcrd, u8 inbyte)
+{
+ 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(struct mtpav *mcrd)
+{
+ u8 clrread, setread;
+ u8 mtp_read_byte;
+ u8 sr, cbyt;
+ int i;
+
+ u8 sbyt = snd_mtpav_getreg(mcrd, SREG);
+
+ /* printk(KERN_DEBUG "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 mtpav *mcard = dev_id;
+
+ 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(struct mtpav *mcard)
+{
+ if ((mcard->res_port = request_region(port, 3, "MotuMTPAV MIDI")) == NULL) {
+ snd_printk(KERN_ERR "MTVAP port 0x%lx is busy\n", port);
+ return -EBUSY;
+ }
+ mcard->port = port;
+ if (request_irq(irq, snd_mtpav_irqh, 0, "MOTU MTPAV", mcard)) {
+ snd_printk(KERN_ERR "MTVAP IRQ %d busy\n", irq);
+ return -EBUSY;
+ }
+ mcard->irq = irq;
+ return 0;
+}
+
+
+/*
+ */
+
+static const struct snd_rawmidi_ops snd_mtpav_output = {
+ .open = snd_mtpav_output_open,
+ .close = snd_mtpav_output_close,
+ .trigger = snd_mtpav_output_trigger,
+};
+
+static const struct snd_rawmidi_ops 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(struct mtpav *chip,
+ struct snd_rawmidi_substream *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(struct mtpav *mcard)
+{
+ int rval;
+ struct snd_rawmidi *rawmidi;
+ struct snd_rawmidi_substream *substream;
+ struct list_head *list;
+
+ if (hwports < 1)
+ hwports = 1;
+ else if (hwports > 8)
+ hwports = 8;
+ 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;
+ rawmidi->private_data = mcard;
+
+ list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
+ substream = list_entry(list, struct snd_rawmidi_substream, 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, struct snd_rawmidi_substream, 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");
+ return 0;
+}
+
+/*
+ */
+
+static void snd_mtpav_free(struct snd_card *card)
+{
+ struct mtpav *crd = card->private_data;
+ 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);
+ release_and_free_resource(crd->res_port);
+}
+
+/*
+ */
+static int snd_mtpav_probe(struct platform_device *dev)
+{
+ struct snd_card *card;
+ int err;
+ struct mtpav *mtp_card;
+
+ err = snd_card_new(&dev->dev, index, id, THIS_MODULE,
+ sizeof(*mtp_card), &card);
+ if (err < 0)
+ return err;
+
+ mtp_card = card->private_data;
+ spin_lock_init(&mtp_card->spinlock);
+ mtp_card->card = card;
+ mtp_card->irq = -1;
+ mtp_card->share_irq = 0;
+ mtp_card->inmidistate = 0;
+ mtp_card->outmidihwport = 0xffffffff;
+ timer_setup(&mtp_card->timer, snd_mtpav_output_timer, 0);
+
+ card->private_free = snd_mtpav_free;
+
+ err = snd_mtpav_get_RAWMIDI(mtp_card);
+ if (err < 0)
+ goto __error;
+
+ mtp_card->inmidiport = mtp_card->num_ports + MTPAV_PIDX_BROADCAST;
+
+ err = snd_mtpav_get_ISA(mtp_card);
+ if (err < 0)
+ goto __error;
+
+ strcpy(card->driver, "MTPAV");
+ strcpy(card->shortname, "MTPAV on parallel port");
+ snprintf(card->longname, sizeof(card->longname),
+ "MTPAV on parallel port at 0x%lx", port);
+
+ snd_mtpav_portscan(mtp_card);
+
+ err = snd_card_register(mtp_card->card);
+ if (err < 0)
+ goto __error;
+
+ platform_set_drvdata(dev, card);
+ printk(KERN_INFO "Motu MidiTimePiece on parallel port irq: %d ioport: 0x%lx\n", irq, port);
+ return 0;
+
+ __error:
+ snd_card_free(card);
+ return err;
+}
+
+static int snd_mtpav_remove(struct platform_device *devptr)
+{
+ snd_card_free(platform_get_drvdata(devptr));
+ return 0;
+}
+
+#define SND_MTPAV_DRIVER "snd_mtpav"
+
+static struct platform_driver snd_mtpav_driver = {
+ .probe = snd_mtpav_probe,
+ .remove = snd_mtpav_remove,
+ .driver = {
+ .name = SND_MTPAV_DRIVER,
+ },
+};
+
+static int __init alsa_card_mtpav_init(void)
+{
+ int err;
+
+ if ((err = platform_driver_register(&snd_mtpav_driver)) < 0)
+ return err;
+
+ device = platform_device_register_simple(SND_MTPAV_DRIVER, -1, NULL, 0);
+ if (!IS_ERR(device)) {
+ if (platform_get_drvdata(device))
+ return 0;
+ platform_device_unregister(device);
+ err = -ENODEV;
+ } else
+ err = PTR_ERR(device);
+ platform_driver_unregister(&snd_mtpav_driver);
+ return err;
+}
+
+static void __exit alsa_card_mtpav_exit(void)
+{
+ platform_device_unregister(device);
+ platform_driver_unregister(&snd_mtpav_driver);
+}
+
+module_init(alsa_card_mtpav_init)
+module_exit(alsa_card_mtpav_exit)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 15:40:05 +0000