/* * 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/err.h> #include <linux/platform_device.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."); 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("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(unsigned long data) { unsigned long flags; struct mtpav *chip = (struct mtpav *)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++) { 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) { chip->timer.expires = 1 + jiffies; add_timer(&chip->timer); } /* 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("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) { 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 __init snd_mtpav_get_ISA(struct mtpav * 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, IRQF_DISABLED, "MOTU MTPAV", mcard)) { snd_printk("MTVAP IRQ %d busy\n", irq); return -EBUSY; } mcard->irq = irq; return 0; } /* */ static struct snd_rawmidi_ops snd_mtpav_output = { .open = snd_mtpav_output_open, .close = snd_mtpav_output_close, .trigger = snd_mtpav_output_trigger, }; static 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 __init 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 __init 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 __init snd_mtpav_probe(struct platform_device *dev) { struct snd_card *card; int err; struct mtpav *mtp_card; card = snd_card_new(index, id, THIS_MODULE, sizeof(*mtp_card)); if (! card) return -ENOMEM; mtp_card = card->private_data; spin_lock_init(&mtp_card->spinlock); init_timer(&mtp_card->timer); mtp_card->card = card; mtp_card->irq = -1; mtp_card->share_irq = 0; mtp_card->inmidiport = 0xffffffff; mtp_card->inmidistate = 0; mtp_card->outmidihwport = 0xffffffff; init_timer(&mtp_card->timer); mtp_card->timer.function = snd_mtpav_output_timer; mtp_card->timer.data = (unsigned long) mtp_card; card->private_free = snd_mtpav_free; 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); err = snd_mtpav_get_RAWMIDI(mtp_card); if (err < 0) goto __error; snd_mtpav_portscan(mtp_card); snd_card_set_dev(card, &dev->dev); 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)); platform_set_drvdata(devptr, NULL); 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)