// SPDX-License-Identifier: GPL-2.0-or-later /* * MOTU Midi Timepiece ALSA Main routines * Copyright by Michael T. Mayers (c) Jan 09, 2000 * mail: [email protected] * Thanks to John Galbraith * * 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 <[email protected]> * - 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(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; // io resources #define MTPAV_IOBASE … #define MTPAV_IRQ … #define MTPAV_MAX_PORTS … static int index = …; static char *id = …; static long port = …; /* 0x378, 0x278 */ static int irq = …; /* 7, 5 */ static int hwports = …; /* use hardware ports 1-8 */ module_param(index, int, 0444); MODULE_PARM_DESC(…) …; module_param(id, charp, 0444); MODULE_PARM_DESC(…) …; module_param_hw(port, long, ioport, 0444); MODULE_PARM_DESC(…) …; module_param_hw(irq, int, irq, 0444); MODULE_PARM_DESC(…) …; module_param(hwports, int, 0444); MODULE_PARM_DESC(…) …; 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 … #define SIGS_RFD … #define SIGS_IRQ … #define SIGS_IN0 … #define SIGS_IN1 … #define SIGC_WRITE … #define SIGC_READ … #define SIGC_INTEN … #define DREG … #define SREG … #define CREG … // #define MTPAV_MODE_INPUT_OPENED … #define MTPAV_MODE_OUTPUT_OPENED … #define MTPAV_MODE_INPUT_TRIGGERED … #define MTPAV_MODE_OUTPUT_TRIGGERED … #define NUMPORTS … /* */ struct mtpav_port { … }; struct mtpav { … }; /* * 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 … #define MTPAV_PIDX_ADAT … #define MTPAV_PIDX_BROADCAST … static int translate_subdevice_to_hwport(struct mtpav *chip, int subdev) { … } static int translate_hwport_to_subdevice(struct mtpav *chip, int hwport) { … } /* */ static u8 snd_mtpav_getreg(struct mtpav *chip, u16 reg) { … } /* */ static inline void snd_mtpav_mputreg(struct mtpav *chip, u16 reg, u8 val) { … } /* */ static void snd_mtpav_wait_rfdhi(struct mtpav *chip) { … } static void snd_mtpav_send_byte(struct mtpav *chip, u8 byte) { … } /* */ /* 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) { … } static void snd_mtpav_output_write(struct snd_rawmidi_substream *substream) { … } /* * mtpav control */ static void snd_mtpav_portscan(struct mtpav *chip) // put mtp into smart routing mode { … } /* */ static int snd_mtpav_input_open(struct snd_rawmidi_substream *substream) { … } /* */ static int snd_mtpav_input_close(struct snd_rawmidi_substream *substream) { … } /* */ static void snd_mtpav_input_trigger(struct snd_rawmidi_substream *substream, int up) { … } /* * timer interrupt for outputs */ static void snd_mtpav_output_timer(struct timer_list *t) { … } /* spinlock held! */ static void snd_mtpav_add_output_timer(struct mtpav *chip) { … } /* spinlock held! */ static void snd_mtpav_remove_output_timer(struct mtpav *chip) { … } /* */ 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) { … } /* * midi interrupt for inputs */ static void snd_mtpav_inmidi_process(struct mtpav *mcrd, u8 inbyte) { … } static void snd_mtpav_inmidi_h(struct mtpav *mcrd, u8 inbyte) { … } static void snd_mtpav_read_bytes(struct mtpav *mcrd) { … } static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id) { … } /* * get ISA resources */ static int snd_mtpav_get_ISA(struct mtpav *mcard) { … } /* */ static const struct snd_rawmidi_ops snd_mtpav_output = …; static const struct snd_rawmidi_ops snd_mtpav_input = …; /* * get RAWMIDI resources */ static void snd_mtpav_set_name(struct mtpav *chip, struct snd_rawmidi_substream *substream) { … } static int snd_mtpav_get_RAWMIDI(struct mtpav *mcard) { … } /* */ static void snd_mtpav_free(struct snd_card *card) { … } /* */ static int snd_mtpav_probe(struct platform_device *dev) { … } #define SND_MTPAV_DRIVER … static struct platform_driver snd_mtpav_driver = …; static int __init alsa_card_mtpav_init(void) { … } static void __exit alsa_card_mtpav_exit(void) { … } module_init(…) … module_exit(…)
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