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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * MOTU Midi Timepiece ALSA Main routines
3 * Copyright by Michael T. Mayers (c) Jan 09, 2000
4 * mail: michael@tweakoz.com
5 * Thanks to John Galbraith
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 *
22 * This driver is for the 'Mark Of The Unicorn' (MOTU)
23 * MidiTimePiece AV multiport MIDI interface
24 *
25 * IOPORTS
26 * -------
27 * 8 MIDI Ins and 8 MIDI outs
28 * Video Sync In (BNC), Word Sync Out (BNC),
29 * ADAT Sync Out (DB9)
30 * SMPTE in/out (1/4")
31 * 2 programmable pedal/footswitch inputs and 4 programmable MIDI controller knobs.
32 * Macintosh RS422 serial port
33 * RS422 "network" port for ganging multiple MTP's
34 * PC Parallel Port ( which this driver currently uses )
35 *
36 * MISC FEATURES
37 * -------------
38 * Hardware MIDI routing, merging, and filtering
39 * MIDI Synchronization to Video, ADAT, SMPTE and other Clock sources
40 * 128 'scene' memories, recallable from MIDI program change
41 *
42 *
43 * ChangeLog
44 * Jun 11 2001 Takashi Iwai <tiwai@suse.de>
45 * - Recoded & debugged
46 * - Added timer interrupt for midi outputs
47 * - hwports is between 1 and 8, which specifies the number of hardware ports.
48 * The three global ports, computer, adat and broadcast ports, are created
49 * always after h/w and remote ports.
50 *
51 */
52
53#include <sound/driver.h>
54#include <linux/init.h>
55#include <linux/interrupt.h>
Takashi Iwai077d0ac2005-11-17 16:02:15 +010056#include <linux/err.h>
57#include <linux/platform_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070058#include <linux/slab.h>
59#include <linux/ioport.h>
60#include <linux/moduleparam.h>
61#include <sound/core.h>
62#include <sound/initval.h>
63#include <sound/rawmidi.h>
64#include <linux/delay.h>
65
66#include <asm/io.h>
67
68/*
69 * globals
70 */
71MODULE_AUTHOR("Michael T. Mayers");
72MODULE_DESCRIPTION("MOTU MidiTimePiece AV multiport MIDI");
73MODULE_LICENSE("GPL");
74MODULE_SUPPORTED_DEVICE("{{MOTU,MidiTimePiece AV multiport MIDI}}");
75
76// io resources
77#define MTPAV_IOBASE 0x378
78#define MTPAV_IRQ 7
79#define MTPAV_MAX_PORTS 8
80
81static int index = SNDRV_DEFAULT_IDX1;
82static char *id = SNDRV_DEFAULT_STR1;
83static long port = MTPAV_IOBASE; /* 0x378, 0x278 */
84static int irq = MTPAV_IRQ; /* 7, 5 */
85static int hwports = MTPAV_MAX_PORTS; /* use hardware ports 1-8 */
86
87module_param(index, int, 0444);
88MODULE_PARM_DESC(index, "Index value for MotuMTPAV MIDI.");
89module_param(id, charp, 0444);
90MODULE_PARM_DESC(id, "ID string for MotuMTPAV MIDI.");
91module_param(port, long, 0444);
92MODULE_PARM_DESC(port, "Parallel port # for MotuMTPAV MIDI.");
93module_param(irq, int, 0444);
94MODULE_PARM_DESC(irq, "Parallel IRQ # for MotuMTPAV MIDI.");
95module_param(hwports, int, 0444);
96MODULE_PARM_DESC(hwports, "Hardware ports # for MotuMTPAV MIDI.");
97
Clemens Ladischf7a92752005-12-07 09:13:42 +010098static struct platform_device *device;
99
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100/*
101 * defines
102 */
103//#define USE_FAKE_MTP // don't actually read/write to MTP device (for debugging without an actual unit) (does not work yet)
104
105// parallel port usage masks
106#define SIGS_BYTE 0x08
107#define SIGS_RFD 0x80
108#define SIGS_IRQ 0x40
109#define SIGS_IN0 0x10
110#define SIGS_IN1 0x20
111
112#define SIGC_WRITE 0x04
113#define SIGC_READ 0x08
114#define SIGC_INTEN 0x10
115
116#define DREG 0
117#define SREG 1
118#define CREG 2
119
120//
121#define MTPAV_MODE_INPUT_OPENED 0x01
122#define MTPAV_MODE_OUTPUT_OPENED 0x02
123#define MTPAV_MODE_INPUT_TRIGGERED 0x04
124#define MTPAV_MODE_OUTPUT_TRIGGERED 0x08
125
126#define NUMPORTS (0x12+1)
127
128
129/*
130 */
131
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100132struct mtpav_port {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 u8 number;
134 u8 hwport;
135 u8 mode;
136 u8 running_status;
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100137 struct snd_rawmidi_substream *input;
138 struct snd_rawmidi_substream *output;
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100139};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100141struct mtpav {
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100142 struct snd_card *card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143 unsigned long port;
144 struct resource *res_port;
145 int irq; /* interrupt (for inputs) */
146 spinlock_t spinlock;
147 int share_irq; /* number of accesses to input interrupts */
148 int istimer; /* number of accesses to timer interrupts */
149 struct timer_list timer; /* timer interrupts for outputs */
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100150 struct snd_rawmidi *rmidi;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151 int num_ports; /* number of hw ports (1-8) */
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100152 struct mtpav_port ports[NUMPORTS]; /* all ports including computer, adat and bc */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153
154 u32 inmidiport; /* selected input midi port */
155 u32 inmidistate; /* during midi command 0xf5 */
156
157 u32 outmidihwport; /* selected output midi hw port */
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100158};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159
160
161/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 * possible hardware ports (selected by 0xf5 port message)
163 * 0x00 all ports
164 * 0x01 .. 0x08 this MTP's ports 1..8
165 * 0x09 .. 0x10 networked MTP's ports (9..16)
166 * 0x11 networked MTP's computer port
167 * 0x63 to ADAT
168 *
169 * mappig:
170 * subdevice 0 - (X-1) ports
171 * X - (2*X-1) networked ports
172 * X computer
173 * X+1 ADAT
174 * X+2 all ports
175 *
176 * where X = chip->num_ports
177 */
178
179#define MTPAV_PIDX_COMPUTER 0
180#define MTPAV_PIDX_ADAT 1
181#define MTPAV_PIDX_BROADCAST 2
182
183
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100184static int translate_subdevice_to_hwport(struct mtpav *chip, int subdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185{
186 if (subdev < 0)
187 return 0x01; /* invalid - use port 0 as default */
188 else if (subdev < chip->num_ports)
189 return subdev + 1; /* single mtp port */
190 else if (subdev < chip->num_ports * 2)
191 return subdev - chip->num_ports + 0x09; /* remote port */
192 else if (subdev == chip->num_ports * 2 + MTPAV_PIDX_COMPUTER)
193 return 0x11; /* computer port */
194 else if (subdev == chip->num_ports + MTPAV_PIDX_ADAT)
195 return 0x63; /* ADAT */
196 return 0; /* all ports */
197}
198
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100199static int translate_hwport_to_subdevice(struct mtpav *chip, int hwport)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200{
201 int p;
202 if (hwport <= 0x00) /* all ports */
203 return chip->num_ports + MTPAV_PIDX_BROADCAST;
204 else if (hwport <= 0x08) { /* single port */
205 p = hwport - 1;
206 if (p >= chip->num_ports)
207 p = 0;
208 return p;
209 } else if (hwport <= 0x10) { /* remote port */
210 p = hwport - 0x09 + chip->num_ports;
211 if (p >= chip->num_ports * 2)
212 p = chip->num_ports;
213 return p;
214 } else if (hwport == 0x11) /* computer port */
215 return chip->num_ports + MTPAV_PIDX_COMPUTER;
216 else /* ADAT */
217 return chip->num_ports + MTPAV_PIDX_ADAT;
218}
219
220
221/*
222 */
223
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100224static u8 snd_mtpav_getreg(struct mtpav *chip, u16 reg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225{
226 u8 rval = 0;
227
228 if (reg == SREG) {
229 rval = inb(chip->port + SREG);
230 rval = (rval & 0xf8);
231 } else if (reg == CREG) {
232 rval = inb(chip->port + CREG);
233 rval = (rval & 0x1c);
234 }
235
236 return rval;
237}
238
239/*
240 */
241
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100242static inline void snd_mtpav_mputreg(struct mtpav *chip, u16 reg, u8 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243{
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100244 if (reg == DREG || reg == CREG)
245 outb(val, chip->port + reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246}
247
248/*
249 */
250
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100251static void snd_mtpav_wait_rfdhi(struct mtpav *chip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252{
253 int counts = 10000;
254 u8 sbyte;
255
256 sbyte = snd_mtpav_getreg(chip, SREG);
257 while (!(sbyte & SIGS_RFD) && counts--) {
258 sbyte = snd_mtpav_getreg(chip, SREG);
259 udelay(10);
260 }
261}
262
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100263static void snd_mtpav_send_byte(struct mtpav *chip, u8 byte)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264{
265 u8 tcbyt;
266 u8 clrwrite;
267 u8 setwrite;
268
269 snd_mtpav_wait_rfdhi(chip);
270
271 /////////////////
272
273 tcbyt = snd_mtpav_getreg(chip, CREG);
274 clrwrite = tcbyt & (SIGC_WRITE ^ 0xff);
275 setwrite = tcbyt | SIGC_WRITE;
276
277 snd_mtpav_mputreg(chip, DREG, byte);
278 snd_mtpav_mputreg(chip, CREG, clrwrite); // clear write bit
279
280 snd_mtpav_mputreg(chip, CREG, setwrite); // set write bit
281
282}
283
284
285/*
286 */
287
288/* call this with spin lock held */
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100289static void snd_mtpav_output_port_write(struct mtpav *mtp_card,
290 struct mtpav_port *portp,
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100291 struct snd_rawmidi_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292{
293 u8 outbyte;
294
295 // Get the outbyte first, so we can emulate running status if
296 // necessary
297 if (snd_rawmidi_transmit(substream, &outbyte, 1) != 1)
298 return;
299
300 // send port change command if necessary
301
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100302 if (portp->hwport != mtp_card->outmidihwport) {
303 mtp_card->outmidihwport = portp->hwport;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304
305 snd_mtpav_send_byte(mtp_card, 0xf5);
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100306 snd_mtpav_send_byte(mtp_card, portp->hwport);
307 //snd_printk("new outport: 0x%x\n", (unsigned int) portp->hwport);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100309 if (!(outbyte & 0x80) && portp->running_status)
310 snd_mtpav_send_byte(mtp_card, portp->running_status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 }
312
313 // send data
314
315 do {
316 if (outbyte & 0x80)
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100317 portp->running_status = outbyte;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318
319 snd_mtpav_send_byte(mtp_card, outbyte);
320 } while (snd_rawmidi_transmit(substream, &outbyte, 1) == 1);
321}
322
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100323static void snd_mtpav_output_write(struct snd_rawmidi_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324{
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100325 struct mtpav *mtp_card = substream->rmidi->private_data;
326 struct mtpav_port *portp = &mtp_card->ports[substream->number];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 unsigned long flags;
328
329 spin_lock_irqsave(&mtp_card->spinlock, flags);
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100330 snd_mtpav_output_port_write(mtp_card, portp, substream);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
332}
333
334
335/*
336 * mtpav control
337 */
338
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100339static void snd_mtpav_portscan(struct mtpav *chip) // put mtp into smart routing mode
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340{
341 u8 p;
342
343 for (p = 0; p < 8; p++) {
344 snd_mtpav_send_byte(chip, 0xf5);
345 snd_mtpav_send_byte(chip, p);
346 snd_mtpav_send_byte(chip, 0xfe);
347 }
348}
349
350/*
351 */
352
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100353static int snd_mtpav_input_open(struct snd_rawmidi_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354{
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100355 struct mtpav *mtp_card = substream->rmidi->private_data;
356 struct mtpav_port *portp = &mtp_card->ports[substream->number];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 spin_lock_irqsave(&mtp_card->spinlock, flags);
360 portp->mode |= MTPAV_MODE_INPUT_OPENED;
361 portp->input = substream;
362 if (mtp_card->share_irq++ == 0)
363 snd_mtpav_mputreg(mtp_card, CREG, (SIGC_INTEN | SIGC_WRITE)); // enable pport interrupts
364 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
365 return 0;
366}
367
368/*
369 */
370
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100371static int snd_mtpav_input_close(struct snd_rawmidi_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372{
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100373 struct mtpav *mtp_card = substream->rmidi->private_data;
374 struct mtpav_port *portp = &mtp_card->ports[substream->number];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376
377 spin_lock_irqsave(&mtp_card->spinlock, flags);
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100378 portp->mode &= ~MTPAV_MODE_INPUT_OPENED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 portp->input = NULL;
380 if (--mtp_card->share_irq == 0)
381 snd_mtpav_mputreg(mtp_card, CREG, 0); // disable pport interrupts
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
383 return 0;
384}
385
386/*
387 */
388
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100389static void snd_mtpav_input_trigger(struct snd_rawmidi_substream *substream, int up)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390{
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100391 struct mtpav *mtp_card = substream->rmidi->private_data;
392 struct mtpav_port *portp = &mtp_card->ports[substream->number];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394
395 spin_lock_irqsave(&mtp_card->spinlock, flags);
396 if (up)
397 portp->mode |= MTPAV_MODE_INPUT_TRIGGERED;
398 else
399 portp->mode &= ~MTPAV_MODE_INPUT_TRIGGERED;
400 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
401
402}
403
404
405/*
406 * timer interrupt for outputs
407 */
408
409static void snd_mtpav_output_timer(unsigned long data)
410{
411 unsigned long flags;
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100412 struct mtpav *chip = (struct mtpav *)data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 int p;
414
415 spin_lock_irqsave(&chip->spinlock, flags);
416 /* reprogram timer */
417 chip->timer.expires = 1 + jiffies;
418 add_timer(&chip->timer);
419 /* process each port */
420 for (p = 0; p <= chip->num_ports * 2 + MTPAV_PIDX_BROADCAST; p++) {
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100421 struct mtpav_port *portp = &chip->ports[p];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 if ((portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED) && portp->output)
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100423 snd_mtpav_output_port_write(chip, portp, portp->output);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 }
425 spin_unlock_irqrestore(&chip->spinlock, flags);
426}
427
428/* spinlock held! */
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100429static void snd_mtpav_add_output_timer(struct mtpav *chip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 chip->timer.expires = 1 + jiffies;
432 add_timer(&chip->timer);
433}
434
435/* spinlock held! */
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100436static void snd_mtpav_remove_output_timer(struct mtpav *chip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437{
438 del_timer(&chip->timer);
439}
440
441/*
442 */
443
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100444static int snd_mtpav_output_open(struct snd_rawmidi_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445{
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100446 struct mtpav *mtp_card = substream->rmidi->private_data;
447 struct mtpav_port *portp = &mtp_card->ports[substream->number];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449
450 spin_lock_irqsave(&mtp_card->spinlock, flags);
451 portp->mode |= MTPAV_MODE_OUTPUT_OPENED;
452 portp->output = substream;
453 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
454 return 0;
455};
456
457/*
458 */
459
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100460static int snd_mtpav_output_close(struct snd_rawmidi_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461{
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100462 struct mtpav *mtp_card = substream->rmidi->private_data;
463 struct mtpav_port *portp = &mtp_card->ports[substream->number];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465
466 spin_lock_irqsave(&mtp_card->spinlock, flags);
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100467 portp->mode &= ~MTPAV_MODE_OUTPUT_OPENED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 portp->output = NULL;
469 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
470 return 0;
471};
472
473/*
474 */
475
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100476static void snd_mtpav_output_trigger(struct snd_rawmidi_substream *substream, int up)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477{
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100478 struct mtpav *mtp_card = substream->rmidi->private_data;
479 struct mtpav_port *portp = &mtp_card->ports[substream->number];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481
482 spin_lock_irqsave(&mtp_card->spinlock, flags);
483 if (up) {
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100484 if (! (portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485 if (mtp_card->istimer++ == 0)
486 snd_mtpav_add_output_timer(mtp_card);
487 portp->mode |= MTPAV_MODE_OUTPUT_TRIGGERED;
488 }
489 } else {
490 portp->mode &= ~MTPAV_MODE_OUTPUT_TRIGGERED;
491 if (--mtp_card->istimer == 0)
492 snd_mtpav_remove_output_timer(mtp_card);
493 }
494 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
495
496 if (up)
497 snd_mtpav_output_write(substream);
498}
499
500/*
501 * midi interrupt for inputs
502 */
503
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100504static void snd_mtpav_inmidi_process(struct mtpav *mcrd, u8 inbyte)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505{
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100506 struct mtpav_port *portp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507
508 if ((int)mcrd->inmidiport > mcrd->num_ports * 2 + MTPAV_PIDX_BROADCAST)
509 return;
510
511 portp = &mcrd->ports[mcrd->inmidiport];
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100512 if (portp->mode & MTPAV_MODE_INPUT_TRIGGERED)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513 snd_rawmidi_receive(portp->input, &inbyte, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514}
515
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100516static void snd_mtpav_inmidi_h(struct mtpav *mcrd, u8 inbyte)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 if (inbyte >= 0xf8) {
519 /* real-time midi code */
520 snd_mtpav_inmidi_process(mcrd, inbyte);
521 return;
522 }
523
524 if (mcrd->inmidistate == 0) { // awaiting command
525 if (inbyte == 0xf5) // MTP port #
526 mcrd->inmidistate = 1;
527 else
528 snd_mtpav_inmidi_process(mcrd, inbyte);
529 } else if (mcrd->inmidistate) {
530 mcrd->inmidiport = translate_hwport_to_subdevice(mcrd, inbyte);
531 mcrd->inmidistate = 0;
532 }
533}
534
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100535static void snd_mtpav_read_bytes(struct mtpav *mcrd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536{
537 u8 clrread, setread;
538 u8 mtp_read_byte;
539 u8 sr, cbyt;
540 int i;
541
542 u8 sbyt = snd_mtpav_getreg(mcrd, SREG);
543
544 //printk("snd_mtpav_read_bytes() sbyt: 0x%x\n", sbyt);
545
546 if (!(sbyt & SIGS_BYTE))
547 return;
548
549 cbyt = snd_mtpav_getreg(mcrd, CREG);
550 clrread = cbyt & (SIGC_READ ^ 0xff);
551 setread = cbyt | SIGC_READ;
552
553 do {
554
555 mtp_read_byte = 0;
556 for (i = 0; i < 4; i++) {
557 snd_mtpav_mputreg(mcrd, CREG, setread);
558 sr = snd_mtpav_getreg(mcrd, SREG);
559 snd_mtpav_mputreg(mcrd, CREG, clrread);
560
561 sr &= SIGS_IN0 | SIGS_IN1;
562 sr >>= 4;
563 mtp_read_byte |= sr << (i * 2);
564 }
565
566 snd_mtpav_inmidi_h(mcrd, mtp_read_byte);
567
568 sbyt = snd_mtpav_getreg(mcrd, SREG);
569
570 } while (sbyt & SIGS_BYTE);
571}
572
573static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id, struct pt_regs *regs)
574{
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100575 struct mtpav *mcard = dev_id;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 spin_lock(&mcard->spinlock);
578 snd_mtpav_read_bytes(mcard);
579 spin_unlock(&mcard->spinlock);
580 return IRQ_HANDLED;
581}
582
583/*
584 * get ISA resources
585 */
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100586static int __init snd_mtpav_get_ISA(struct mtpav * mcard)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587{
588 if ((mcard->res_port = request_region(port, 3, "MotuMTPAV MIDI")) == NULL) {
589 snd_printk("MTVAP port 0x%lx is busy\n", port);
590 return -EBUSY;
591 }
592 mcard->port = port;
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100593 if (request_irq(irq, snd_mtpav_irqh, SA_INTERRUPT, "MOTU MTPAV", mcard)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594 snd_printk("MTVAP IRQ %d busy\n", irq);
595 return -EBUSY;
596 }
597 mcard->irq = irq;
598 return 0;
599}
600
601
602/*
603 */
604
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100605static struct snd_rawmidi_ops snd_mtpav_output = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606 .open = snd_mtpav_output_open,
607 .close = snd_mtpav_output_close,
608 .trigger = snd_mtpav_output_trigger,
609};
610
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100611static struct snd_rawmidi_ops snd_mtpav_input = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 .open = snd_mtpav_input_open,
613 .close = snd_mtpav_input_close,
614 .trigger = snd_mtpav_input_trigger,
615};
616
617
618/*
619 * get RAWMIDI resources
620 */
621
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100622static void __init snd_mtpav_set_name(struct mtpav *chip,
623 struct snd_rawmidi_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624{
625 if (substream->number >= 0 && substream->number < chip->num_ports)
626 sprintf(substream->name, "MTP direct %d", (substream->number % chip->num_ports) + 1);
627 else if (substream->number >= 8 && substream->number < chip->num_ports * 2)
628 sprintf(substream->name, "MTP remote %d", (substream->number % chip->num_ports) + 1);
629 else if (substream->number == chip->num_ports * 2)
630 strcpy(substream->name, "MTP computer");
631 else if (substream->number == chip->num_ports * 2 + 1)
632 strcpy(substream->name, "MTP ADAT");
633 else
634 strcpy(substream->name, "MTP broadcast");
635}
636
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100637static int __init snd_mtpav_get_RAWMIDI(struct mtpav *mcard)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638{
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100639 int rval;
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100640 struct snd_rawmidi *rawmidi;
641 struct snd_rawmidi_substream *substream;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642 struct list_head *list;
643
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644 if (hwports < 1)
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100645 hwports = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646 else if (hwports > 8)
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100647 hwports = 8;
648 mcard->num_ports = hwports;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649
650 if ((rval = snd_rawmidi_new(mcard->card, "MotuMIDI", 0,
651 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
652 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
653 &mcard->rmidi)) < 0)
654 return rval;
655 rawmidi = mcard->rmidi;
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100656 rawmidi->private_data = mcard;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657
658 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100659 substream = list_entry(list, struct snd_rawmidi_substream, list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 snd_mtpav_set_name(mcard, substream);
661 substream->ops = &snd_mtpav_input;
662 }
663 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
Takashi Iwai4a4d2cf2005-11-17 14:27:28 +0100664 substream = list_entry(list, struct snd_rawmidi_substream, list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665 snd_mtpav_set_name(mcard, substream);
666 substream->ops = &snd_mtpav_output;
667 mcard->ports[substream->number].hwport = translate_subdevice_to_hwport(mcard, substream->number);
668 }
669 rawmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT |
670 SNDRV_RAWMIDI_INFO_DUPLEX;
671 sprintf(rawmidi->name, "MTP AV MIDI");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672 return 0;
673}
674
675/*
676 */
677
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100678static void snd_mtpav_free(struct snd_card *card)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679{
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100680 struct mtpav *crd = card->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 unsigned long flags;
682
683 spin_lock_irqsave(&crd->spinlock, flags);
684 if (crd->istimer > 0)
685 snd_mtpav_remove_output_timer(crd);
686 spin_unlock_irqrestore(&crd->spinlock, flags);
687 if (crd->irq >= 0)
688 free_irq(crd->irq, (void *)crd);
Takashi Iwaib1d57762005-10-10 11:56:31 +0200689 release_and_free_resource(crd->res_port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690}
691
692/*
693 */
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100694static int __init snd_mtpav_probe(struct platform_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695{
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100696 struct snd_card *card;
697 int err;
698 struct mtpav *mtp_card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100700 card = snd_card_new(index, id, THIS_MODULE, sizeof(*mtp_card));
701 if (! card)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700702 return -ENOMEM;
703
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100704 mtp_card = card->private_data;
705 spin_lock_init(&mtp_card->spinlock);
706 init_timer(&mtp_card->timer);
707 mtp_card->card = card;
708 mtp_card->irq = -1;
709 mtp_card->share_irq = 0;
710 mtp_card->inmidiport = 0xffffffff;
711 mtp_card->inmidistate = 0;
712 mtp_card->outmidihwport = 0xffffffff;
713 init_timer(&mtp_card->timer);
714 mtp_card->timer.function = snd_mtpav_output_timer;
715 mtp_card->timer.data = (unsigned long) mtp_card;
716
717 card->private_free = snd_mtpav_free;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718
719 err = snd_mtpav_get_ISA(mtp_card);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720 if (err < 0)
721 goto __error;
722
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100723 strcpy(card->driver, "MTPAV");
724 strcpy(card->shortname, "MTPAV on parallel port");
725 snprintf(card->longname, sizeof(card->longname),
726 "MTPAV on parallel port at 0x%lx", port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727
728 err = snd_mtpav_get_RAWMIDI(mtp_card);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729 if (err < 0)
730 goto __error;
731
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732 snd_mtpav_portscan(mtp_card);
733
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100734 snd_card_set_dev(card, &dev->dev);
735 err = snd_card_register(mtp_card->card);
736 if (err < 0)
737 goto __error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100739 platform_set_drvdata(dev, card);
740 printk(KERN_INFO "Motu MidiTimePiece on parallel port irq: %d ioport: 0x%lx\n", irq, port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741 return 0;
742
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100743 __error:
744 snd_card_free(card);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745 return err;
746}
747
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100748static int snd_mtpav_remove(struct platform_device *devptr)
749{
750 snd_card_free(platform_get_drvdata(devptr));
751 platform_set_drvdata(devptr, NULL);
752 return 0;
753}
754
755#define SND_MTPAV_DRIVER "snd_mtpav"
756
757static struct platform_driver snd_mtpav_driver = {
758 .probe = snd_mtpav_probe,
759 .remove = snd_mtpav_remove,
760 .driver = {
761 .name = SND_MTPAV_DRIVER
762 },
763};
764
765static int __init alsa_card_mtpav_init(void)
766{
767 int err;
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100768
769 if ((err = platform_driver_register(&snd_mtpav_driver)) < 0)
770 return err;
771
772 device = platform_device_register_simple(SND_MTPAV_DRIVER, -1, NULL, 0);
Rene Herman71524472006-04-13 12:58:06 +0200773 if (!IS_ERR(device)) {
774 if (platform_get_drvdata(device))
775 return 0;
776 platform_device_unregister(device);
777 err = -ENODEV;
778 } else
779 err = PTR_ERR(device);
780 platform_driver_unregister(&snd_mtpav_driver);
781 return err;
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100782}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783
784static void __exit alsa_card_mtpav_exit(void)
785{
Clemens Ladischf7a92752005-12-07 09:13:42 +0100786 platform_device_unregister(device);
Takashi Iwai077d0ac2005-11-17 16:02:15 +0100787 platform_driver_unregister(&snd_mtpav_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700788}
789
Linus Torvalds1da177e2005-04-16 15:20:36 -0700790module_init(alsa_card_mtpav_init)
791module_exit(alsa_card_mtpav_exit)