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757e119b MK |
1 | /* |
2 | * Driver for Midiman Portman2x4 parallel port midi interface | |
3 | * | |
4 | * Copyright (c) by Levent Guendogdu <levon@feature-it.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | * | |
20 | * ChangeLog | |
21 | * Jan 24 2007 Matthias Koenig <mkoenig@suse.de> | |
22 | * - cleanup and rewrite | |
23 | * Sep 30 2004 Tobias Gehrig <tobias@gehrig.tk> | |
24 | * - source code cleanup | |
25 | * Sep 03 2004 Tobias Gehrig <tobias@gehrig.tk> | |
26 | * - fixed compilation problem with alsa 1.0.6a (removed MODULE_CLASSES, | |
27 | * MODULE_PARM_SYNTAX and changed MODULE_DEVICES to | |
28 | * MODULE_SUPPORTED_DEVICE) | |
29 | * Mar 24 2004 Tobias Gehrig <tobias@gehrig.tk> | |
30 | * - added 2.6 kernel support | |
31 | * Mar 18 2004 Tobias Gehrig <tobias@gehrig.tk> | |
32 | * - added parport_unregister_driver to the startup routine if the driver fails to detect a portman | |
33 | * - added support for all 4 output ports in portman_putmidi | |
34 | * Mar 17 2004 Tobias Gehrig <tobias@gehrig.tk> | |
35 | * - added checks for opened input device in interrupt handler | |
36 | * Feb 20 2004 Tobias Gehrig <tobias@gehrig.tk> | |
37 | * - ported from alsa 0.5 to 1.0 | |
38 | */ | |
39 | ||
757e119b MK |
40 | #include <linux/init.h> |
41 | #include <linux/platform_device.h> | |
42 | #include <linux/parport.h> | |
43 | #include <linux/spinlock.h> | |
44 | #include <linux/delay.h> | |
45 | #include <sound/core.h> | |
46 | #include <sound/initval.h> | |
47 | #include <sound/rawmidi.h> | |
48 | #include <sound/control.h> | |
49 | ||
50 | #define CARD_NAME "Portman 2x4" | |
51 | #define DRIVER_NAME "portman" | |
52 | #define PLATFORM_DRIVER "snd_portman2x4" | |
53 | ||
54 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; | |
55 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; | |
56 | static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; | |
57 | ||
58 | static struct platform_device *platform_devices[SNDRV_CARDS]; | |
59 | static int device_count; | |
60 | ||
61 | module_param_array(index, int, NULL, S_IRUGO); | |
62 | MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard."); | |
63 | module_param_array(id, charp, NULL, S_IRUGO); | |
64 | MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard."); | |
65 | module_param_array(enable, bool, NULL, S_IRUGO); | |
66 | MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard."); | |
67 | ||
68 | MODULE_AUTHOR("Levent Guendogdu, Tobias Gehrig, Matthias Koenig"); | |
69 | MODULE_DESCRIPTION("Midiman Portman2x4"); | |
70 | MODULE_LICENSE("GPL"); | |
71 | MODULE_SUPPORTED_DEVICE("{{Midiman,Portman2x4}}"); | |
72 | ||
73 | /********************************************************************* | |
74 | * Chip specific | |
75 | *********************************************************************/ | |
76 | #define PORTMAN_NUM_INPUT_PORTS 2 | |
77 | #define PORTMAN_NUM_OUTPUT_PORTS 4 | |
78 | ||
79 | struct portman { | |
80 | spinlock_t reg_lock; | |
81 | struct snd_card *card; | |
82 | struct snd_rawmidi *rmidi; | |
83 | struct pardevice *pardev; | |
84 | int pardev_claimed; | |
85 | ||
86 | int open_count; | |
87 | int mode[PORTMAN_NUM_INPUT_PORTS]; | |
88 | struct snd_rawmidi_substream *midi_input[PORTMAN_NUM_INPUT_PORTS]; | |
89 | }; | |
90 | ||
91 | static int portman_free(struct portman *pm) | |
92 | { | |
93 | kfree(pm); | |
94 | return 0; | |
95 | } | |
96 | ||
97 | static int __devinit portman_create(struct snd_card *card, | |
98 | struct pardevice *pardev, | |
99 | struct portman **rchip) | |
100 | { | |
101 | struct portman *pm; | |
102 | ||
103 | *rchip = NULL; | |
104 | ||
105 | pm = kzalloc(sizeof(struct portman), GFP_KERNEL); | |
106 | if (pm == NULL) | |
107 | return -ENOMEM; | |
108 | ||
109 | /* Init chip specific data */ | |
110 | spin_lock_init(&pm->reg_lock); | |
111 | pm->card = card; | |
112 | pm->pardev = pardev; | |
113 | ||
114 | *rchip = pm; | |
115 | ||
116 | return 0; | |
117 | } | |
118 | ||
119 | /********************************************************************* | |
120 | * HW related constants | |
121 | *********************************************************************/ | |
122 | ||
123 | /* Standard PC parallel port status register equates. */ | |
124 | #define PP_STAT_BSY 0x80 /* Busy status. Inverted. */ | |
125 | #define PP_STAT_ACK 0x40 /* Acknowledge. Non-Inverted. */ | |
126 | #define PP_STAT_POUT 0x20 /* Paper Out. Non-Inverted. */ | |
127 | #define PP_STAT_SEL 0x10 /* Select. Non-Inverted. */ | |
128 | #define PP_STAT_ERR 0x08 /* Error. Non-Inverted. */ | |
129 | ||
130 | /* Standard PC parallel port command register equates. */ | |
131 | #define PP_CMD_IEN 0x10 /* IRQ Enable. Non-Inverted. */ | |
132 | #define PP_CMD_SELI 0x08 /* Select Input. Inverted. */ | |
133 | #define PP_CMD_INIT 0x04 /* Init Printer. Non-Inverted. */ | |
134 | #define PP_CMD_FEED 0x02 /* Auto Feed. Inverted. */ | |
135 | #define PP_CMD_STB 0x01 /* Strobe. Inverted. */ | |
136 | ||
137 | /* Parallel Port Command Register as implemented by PCP2x4. */ | |
138 | #define INT_EN PP_CMD_IEN /* Interrupt enable. */ | |
139 | #define STROBE PP_CMD_STB /* Command strobe. */ | |
140 | ||
141 | /* The parallel port command register field (b1..b3) selects the | |
142 | * various "registers" within the PC/P 2x4. These are the internal | |
143 | * address of these "registers" that must be written to the parallel | |
144 | * port command register. | |
145 | */ | |
146 | #define RXDATA0 (0 << 1) /* PCP RxData channel 0. */ | |
147 | #define RXDATA1 (1 << 1) /* PCP RxData channel 1. */ | |
148 | #define GEN_CTL (2 << 1) /* PCP General Control Register. */ | |
149 | #define SYNC_CTL (3 << 1) /* PCP Sync Control Register. */ | |
150 | #define TXDATA0 (4 << 1) /* PCP TxData channel 0. */ | |
151 | #define TXDATA1 (5 << 1) /* PCP TxData channel 1. */ | |
152 | #define TXDATA2 (6 << 1) /* PCP TxData channel 2. */ | |
153 | #define TXDATA3 (7 << 1) /* PCP TxData channel 3. */ | |
154 | ||
155 | /* Parallel Port Status Register as implemented by PCP2x4. */ | |
156 | #define ESTB PP_STAT_POUT /* Echoed strobe. */ | |
157 | #define INT_REQ PP_STAT_ACK /* Input data int request. */ | |
158 | #define BUSY PP_STAT_ERR /* Interface Busy. */ | |
159 | ||
160 | /* Parallel Port Status Register BUSY and SELECT lines are multiplexed | |
161 | * between several functions. Depending on which 2x4 "register" is | |
162 | * currently selected (b1..b3), the BUSY and SELECT lines are | |
163 | * assigned as follows: | |
164 | * | |
165 | * SELECT LINE: A3 A2 A1 | |
166 | * -------- | |
167 | */ | |
168 | #define RXAVAIL PP_STAT_SEL /* Rx Available, channel 0. 0 0 0 */ | |
169 | // RXAVAIL1 PP_STAT_SEL /* Rx Available, channel 1. 0 0 1 */ | |
170 | #define SYNC_STAT PP_STAT_SEL /* Reserved - Sync Status. 0 1 0 */ | |
171 | // /* Reserved. 0 1 1 */ | |
172 | #define TXEMPTY PP_STAT_SEL /* Tx Empty, channel 0. 1 0 0 */ | |
173 | // TXEMPTY1 PP_STAT_SEL /* Tx Empty, channel 1. 1 0 1 */ | |
174 | // TXEMPTY2 PP_STAT_SEL /* Tx Empty, channel 2. 1 1 0 */ | |
175 | // TXEMPTY3 PP_STAT_SEL /* Tx Empty, channel 3. 1 1 1 */ | |
176 | ||
177 | /* BUSY LINE: A3 A2 A1 | |
178 | * -------- | |
179 | */ | |
180 | #define RXDATA PP_STAT_BSY /* Rx Input Data, channel 0. 0 0 0 */ | |
181 | // RXDATA1 PP_STAT_BSY /* Rx Input Data, channel 1. 0 0 1 */ | |
182 | #define SYNC_DATA PP_STAT_BSY /* Reserved - Sync Data. 0 1 0 */ | |
183 | /* Reserved. 0 1 1 */ | |
184 | #define DATA_ECHO PP_STAT_BSY /* Parallel Port Data Echo. 1 0 0 */ | |
185 | #define A0_ECHO PP_STAT_BSY /* Address 0 Echo. 1 0 1 */ | |
186 | #define A1_ECHO PP_STAT_BSY /* Address 1 Echo. 1 1 0 */ | |
187 | #define A2_ECHO PP_STAT_BSY /* Address 2 Echo. 1 1 1 */ | |
188 | ||
189 | #define PORTMAN2X4_MODE_INPUT_TRIGGERED 0x01 | |
190 | ||
191 | /********************************************************************* | |
192 | * Hardware specific functions | |
193 | *********************************************************************/ | |
194 | static inline void portman_write_command(struct portman *pm, u8 value) | |
195 | { | |
196 | parport_write_control(pm->pardev->port, value); | |
197 | } | |
198 | ||
199 | static inline u8 portman_read_command(struct portman *pm) | |
200 | { | |
201 | return parport_read_control(pm->pardev->port); | |
202 | } | |
203 | ||
204 | static inline u8 portman_read_status(struct portman *pm) | |
205 | { | |
206 | return parport_read_status(pm->pardev->port); | |
207 | } | |
208 | ||
209 | static inline u8 portman_read_data(struct portman *pm) | |
210 | { | |
211 | return parport_read_data(pm->pardev->port); | |
212 | } | |
213 | ||
214 | static inline void portman_write_data(struct portman *pm, u8 value) | |
215 | { | |
216 | parport_write_data(pm->pardev->port, value); | |
217 | } | |
218 | ||
219 | static void portman_write_midi(struct portman *pm, | |
220 | int port, u8 mididata) | |
221 | { | |
222 | int command = ((port + 4) << 1); | |
223 | ||
224 | /* Get entering data byte and port number in BL and BH respectively. | |
225 | * Set up Tx Channel address field for use with PP Cmd Register. | |
226 | * Store address field in BH register. | |
227 | * Inputs: AH = Output port number (0..3). | |
228 | * AL = Data byte. | |
229 | * command = TXDATA0 | INT_EN; | |
230 | * Align port num with address field (b1...b3), | |
231 | * set address for TXDatax, Strobe=0 | |
232 | */ | |
233 | command |= INT_EN; | |
234 | ||
235 | /* Disable interrupts so that the process is not interrupted, then | |
236 | * write the address associated with the current Tx channel to the | |
237 | * PP Command Reg. Do not set the Strobe signal yet. | |
238 | */ | |
239 | ||
240 | do { | |
241 | portman_write_command(pm, command); | |
242 | ||
243 | /* While the address lines settle, write parallel output data to | |
244 | * PP Data Reg. This has no effect until Strobe signal is asserted. | |
245 | */ | |
246 | ||
247 | portman_write_data(pm, mididata); | |
248 | ||
249 | /* If PCP channel's TxEmpty is set (TxEmpty is read through the PP | |
250 | * Status Register), then go write data. Else go back and wait. | |
251 | */ | |
252 | } while ((portman_read_status(pm) & TXEMPTY) != TXEMPTY); | |
253 | ||
254 | /* TxEmpty is set. Maintain PC/P destination address and assert | |
255 | * Strobe through the PP Command Reg. This will Strobe data into | |
256 | * the PC/P transmitter and set the PC/P BUSY signal. | |
257 | */ | |
258 | ||
259 | portman_write_command(pm, command | STROBE); | |
260 | ||
261 | /* Wait for strobe line to settle and echo back through hardware. | |
262 | * Once it has echoed back, assume that the address and data lines | |
263 | * have settled! | |
264 | */ | |
265 | ||
266 | while ((portman_read_status(pm) & ESTB) == 0) | |
267 | cpu_relax(); | |
268 | ||
269 | /* Release strobe and immediately re-allow interrupts. */ | |
270 | portman_write_command(pm, command); | |
271 | ||
272 | while ((portman_read_status(pm) & ESTB) == ESTB) | |
273 | cpu_relax(); | |
274 | ||
275 | /* PC/P BUSY is now set. We must wait until BUSY resets itself. | |
276 | * We'll reenable ints while we're waiting. | |
277 | */ | |
278 | ||
279 | while ((portman_read_status(pm) & BUSY) == BUSY) | |
280 | cpu_relax(); | |
281 | ||
282 | /* Data sent. */ | |
283 | } | |
284 | ||
285 | ||
286 | /* | |
287 | * Read MIDI byte from port | |
288 | * Attempt to read input byte from specified hardware input port (0..). | |
289 | * Return -1 if no data | |
290 | */ | |
291 | static int portman_read_midi(struct portman *pm, int port) | |
292 | { | |
293 | unsigned char midi_data = 0; | |
294 | unsigned char cmdout; /* Saved address+IE bit. */ | |
295 | ||
296 | /* Make sure clocking edge is down before starting... */ | |
297 | portman_write_data(pm, 0); /* Make sure edge is down. */ | |
298 | ||
299 | /* Set destination address to PCP. */ | |
300 | cmdout = (port << 1) | INT_EN; /* Address + IE + No Strobe. */ | |
301 | portman_write_command(pm, cmdout); | |
302 | ||
303 | while ((portman_read_status(pm) & ESTB) == ESTB) | |
304 | cpu_relax(); /* Wait for strobe echo. */ | |
305 | ||
306 | /* After the address lines settle, check multiplexed RxAvail signal. | |
307 | * If data is available, read it. | |
308 | */ | |
309 | if ((portman_read_status(pm) & RXAVAIL) == 0) | |
310 | return -1; /* No data. */ | |
311 | ||
312 | /* Set the Strobe signal to enable the Rx clocking circuitry. */ | |
313 | portman_write_command(pm, cmdout | STROBE); /* Write address+IE+Strobe. */ | |
314 | ||
315 | while ((portman_read_status(pm) & ESTB) == 0) | |
316 | cpu_relax(); /* Wait for strobe echo. */ | |
317 | ||
318 | /* The first data bit (msb) is already sitting on the input line. */ | |
319 | midi_data = (portman_read_status(pm) & 128); | |
320 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
321 | ||
322 | /* Data bit 6. */ | |
323 | portman_write_data(pm, 0); /* Cause falling edge while data settles. */ | |
324 | midi_data |= (portman_read_status(pm) >> 1) & 64; | |
325 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
326 | ||
327 | /* Data bit 5. */ | |
328 | portman_write_data(pm, 0); /* Cause falling edge while data settles. */ | |
329 | midi_data |= (portman_read_status(pm) >> 2) & 32; | |
330 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
331 | ||
332 | /* Data bit 4. */ | |
333 | portman_write_data(pm, 0); /* Cause falling edge while data settles. */ | |
334 | midi_data |= (portman_read_status(pm) >> 3) & 16; | |
335 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
336 | ||
337 | /* Data bit 3. */ | |
338 | portman_write_data(pm, 0); /* Cause falling edge while data settles. */ | |
339 | midi_data |= (portman_read_status(pm) >> 4) & 8; | |
340 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
341 | ||
342 | /* Data bit 2. */ | |
343 | portman_write_data(pm, 0); /* Cause falling edge while data settles. */ | |
344 | midi_data |= (portman_read_status(pm) >> 5) & 4; | |
345 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
346 | ||
347 | /* Data bit 1. */ | |
348 | portman_write_data(pm, 0); /* Cause falling edge while data settles. */ | |
349 | midi_data |= (portman_read_status(pm) >> 6) & 2; | |
350 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
351 | ||
352 | /* Data bit 0. */ | |
353 | portman_write_data(pm, 0); /* Cause falling edge while data settles. */ | |
354 | midi_data |= (portman_read_status(pm) >> 7) & 1; | |
355 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
356 | portman_write_data(pm, 0); /* Return data clock low. */ | |
357 | ||
358 | ||
359 | /* De-assert Strobe and return data. */ | |
360 | portman_write_command(pm, cmdout); /* Output saved address+IE. */ | |
361 | ||
362 | /* Wait for strobe echo. */ | |
363 | while ((portman_read_status(pm) & ESTB) == ESTB) | |
364 | cpu_relax(); | |
365 | ||
366 | return (midi_data & 255); /* Shift back and return value. */ | |
367 | } | |
368 | ||
369 | /* | |
370 | * Checks if any input data on the given channel is available | |
371 | * Checks RxAvail | |
372 | */ | |
373 | static int portman_data_avail(struct portman *pm, int channel) | |
374 | { | |
375 | int command = INT_EN; | |
376 | switch (channel) { | |
377 | case 0: | |
378 | command |= RXDATA0; | |
379 | break; | |
380 | case 1: | |
381 | command |= RXDATA1; | |
382 | break; | |
383 | } | |
384 | /* Write hardware (assumme STROBE=0) */ | |
385 | portman_write_command(pm, command); | |
386 | /* Check multiplexed RxAvail signal */ | |
387 | if ((portman_read_status(pm) & RXAVAIL) == RXAVAIL) | |
388 | return 1; /* Data available */ | |
389 | ||
390 | /* No Data available */ | |
391 | return 0; | |
392 | } | |
393 | ||
394 | ||
395 | /* | |
396 | * Flushes any input | |
397 | */ | |
398 | static void portman_flush_input(struct portman *pm, unsigned char port) | |
399 | { | |
400 | /* Local variable for counting things */ | |
401 | unsigned int i = 0; | |
402 | unsigned char command = 0; | |
403 | ||
404 | switch (port) { | |
405 | case 0: | |
406 | command = RXDATA0; | |
407 | break; | |
408 | case 1: | |
409 | command = RXDATA1; | |
410 | break; | |
411 | default: | |
412 | snd_printk(KERN_WARNING | |
413 | "portman_flush_input() Won't flush port %i\n", | |
414 | port); | |
415 | return; | |
416 | } | |
417 | ||
418 | /* Set address for specified channel in port and allow to settle. */ | |
419 | portman_write_command(pm, command); | |
420 | ||
421 | /* Assert the Strobe and wait for echo back. */ | |
422 | portman_write_command(pm, command | STROBE); | |
423 | ||
424 | /* Wait for ESTB */ | |
425 | while ((portman_read_status(pm) & ESTB) == 0) | |
426 | cpu_relax(); | |
427 | ||
428 | /* Output clock cycles to the Rx circuitry. */ | |
429 | portman_write_data(pm, 0); | |
430 | ||
431 | /* Flush 250 bits... */ | |
432 | for (i = 0; i < 250; i++) { | |
433 | portman_write_data(pm, 1); | |
434 | portman_write_data(pm, 0); | |
435 | } | |
436 | ||
437 | /* Deassert the Strobe signal of the port and wait for it to settle. */ | |
438 | portman_write_command(pm, command | INT_EN); | |
439 | ||
440 | /* Wait for settling */ | |
441 | while ((portman_read_status(pm) & ESTB) == ESTB) | |
442 | cpu_relax(); | |
443 | } | |
444 | ||
445 | static int portman_probe(struct parport *p) | |
446 | { | |
447 | /* Initialize the parallel port data register. Will set Rx clocks | |
448 | * low in case we happen to be addressing the Rx ports at this time. | |
449 | */ | |
450 | /* 1 */ | |
451 | parport_write_data(p, 0); | |
452 | ||
453 | /* Initialize the parallel port command register, thus initializing | |
454 | * hardware handshake lines to midi box: | |
455 | * | |
456 | * Strobe = 0 | |
457 | * Interrupt Enable = 0 | |
458 | */ | |
459 | /* 2 */ | |
460 | parport_write_control(p, 0); | |
461 | ||
462 | /* Check if Portman PC/P 2x4 is out there. */ | |
463 | /* 3 */ | |
464 | parport_write_control(p, RXDATA0); /* Write Strobe=0 to command reg. */ | |
465 | ||
466 | /* Check for ESTB to be clear */ | |
467 | /* 4 */ | |
468 | if ((parport_read_status(p) & ESTB) == ESTB) | |
469 | return 1; /* CODE 1 - Strobe Failure. */ | |
470 | ||
471 | /* Set for RXDATA0 where no damage will be done. */ | |
472 | /* 5 */ | |
473 | parport_write_control(p, RXDATA0 + STROBE); /* Write Strobe=1 to command reg. */ | |
474 | ||
475 | /* 6 */ | |
476 | if ((parport_read_status(p) & ESTB) != ESTB) | |
477 | return 1; /* CODE 1 - Strobe Failure. */ | |
478 | ||
479 | /* 7 */ | |
480 | parport_write_control(p, 0); /* Reset Strobe=0. */ | |
481 | ||
482 | /* Check if Tx circuitry is functioning properly. If initialized | |
483 | * unit TxEmpty is false, send out char and see if if goes true. | |
484 | */ | |
485 | /* 8 */ | |
486 | parport_write_control(p, TXDATA0); /* Tx channel 0, strobe off. */ | |
487 | ||
488 | /* If PCP channel's TxEmpty is set (TxEmpty is read through the PP | |
489 | * Status Register), then go write data. Else go back and wait. | |
490 | */ | |
491 | /* 9 */ | |
492 | if ((parport_read_status(p) & TXEMPTY) == 0) | |
493 | return 2; | |
494 | ||
495 | /* Return OK status. */ | |
496 | return 0; | |
497 | } | |
498 | ||
499 | static int portman_device_init(struct portman *pm) | |
500 | { | |
501 | portman_flush_input(pm, 0); | |
502 | portman_flush_input(pm, 1); | |
503 | ||
504 | return 0; | |
505 | } | |
506 | ||
507 | /********************************************************************* | |
508 | * Rawmidi | |
509 | *********************************************************************/ | |
510 | static int snd_portman_midi_open(struct snd_rawmidi_substream *substream) | |
511 | { | |
512 | return 0; | |
513 | } | |
514 | ||
515 | static int snd_portman_midi_close(struct snd_rawmidi_substream *substream) | |
516 | { | |
517 | return 0; | |
518 | } | |
519 | ||
520 | static void snd_portman_midi_input_trigger(struct snd_rawmidi_substream *substream, | |
521 | int up) | |
522 | { | |
523 | struct portman *pm = substream->rmidi->private_data; | |
524 | unsigned long flags; | |
525 | ||
526 | spin_lock_irqsave(&pm->reg_lock, flags); | |
527 | if (up) | |
528 | pm->mode[substream->number] |= PORTMAN2X4_MODE_INPUT_TRIGGERED; | |
529 | else | |
530 | pm->mode[substream->number] &= ~PORTMAN2X4_MODE_INPUT_TRIGGERED; | |
531 | spin_unlock_irqrestore(&pm->reg_lock, flags); | |
532 | } | |
533 | ||
534 | static void snd_portman_midi_output_trigger(struct snd_rawmidi_substream *substream, | |
535 | int up) | |
536 | { | |
537 | struct portman *pm = substream->rmidi->private_data; | |
538 | unsigned long flags; | |
539 | unsigned char byte; | |
540 | ||
541 | spin_lock_irqsave(&pm->reg_lock, flags); | |
542 | if (up) { | |
543 | while ((snd_rawmidi_transmit(substream, &byte, 1) == 1)) | |
544 | portman_write_midi(pm, substream->number, byte); | |
545 | } | |
546 | spin_unlock_irqrestore(&pm->reg_lock, flags); | |
547 | } | |
548 | ||
549 | static struct snd_rawmidi_ops snd_portman_midi_output = { | |
550 | .open = snd_portman_midi_open, | |
551 | .close = snd_portman_midi_close, | |
552 | .trigger = snd_portman_midi_output_trigger, | |
553 | }; | |
554 | ||
555 | static struct snd_rawmidi_ops snd_portman_midi_input = { | |
556 | .open = snd_portman_midi_open, | |
557 | .close = snd_portman_midi_close, | |
558 | .trigger = snd_portman_midi_input_trigger, | |
559 | }; | |
560 | ||
561 | /* Create and initialize the rawmidi component */ | |
562 | static int __devinit snd_portman_rawmidi_create(struct snd_card *card) | |
563 | { | |
564 | struct portman *pm = card->private_data; | |
565 | struct snd_rawmidi *rmidi; | |
566 | struct snd_rawmidi_substream *substream; | |
567 | int err; | |
568 | ||
569 | err = snd_rawmidi_new(card, CARD_NAME, 0, | |
570 | PORTMAN_NUM_OUTPUT_PORTS, | |
571 | PORTMAN_NUM_INPUT_PORTS, | |
572 | &rmidi); | |
573 | if (err < 0) | |
574 | return err; | |
575 | ||
576 | rmidi->private_data = pm; | |
577 | strcpy(rmidi->name, CARD_NAME); | |
578 | rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT | | |
579 | SNDRV_RAWMIDI_INFO_INPUT | | |
580 | SNDRV_RAWMIDI_INFO_DUPLEX; | |
581 | ||
582 | pm->rmidi = rmidi; | |
583 | ||
584 | /* register rawmidi ops */ | |
585 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, | |
586 | &snd_portman_midi_output); | |
587 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, | |
588 | &snd_portman_midi_input); | |
589 | ||
590 | /* name substreams */ | |
591 | /* output */ | |
592 | list_for_each_entry(substream, | |
593 | &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams, | |
594 | list) { | |
595 | sprintf(substream->name, | |
596 | "Portman2x4 %d", substream->number+1); | |
597 | } | |
598 | /* input */ | |
599 | list_for_each_entry(substream, | |
600 | &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams, | |
601 | list) { | |
602 | pm->midi_input[substream->number] = substream; | |
603 | sprintf(substream->name, | |
604 | "Portman2x4 %d", substream->number+1); | |
605 | } | |
606 | ||
607 | return err; | |
608 | } | |
609 | ||
610 | /********************************************************************* | |
611 | * parport stuff | |
612 | *********************************************************************/ | |
5712cb3d | 613 | static void snd_portman_interrupt(void *userdata) |
757e119b MK |
614 | { |
615 | unsigned char midivalue = 0; | |
616 | struct portman *pm = ((struct snd_card*)userdata)->private_data; | |
617 | ||
618 | spin_lock(&pm->reg_lock); | |
619 | ||
620 | /* While any input data is waiting */ | |
621 | while ((portman_read_status(pm) & INT_REQ) == INT_REQ) { | |
622 | /* If data available on channel 0, | |
623 | read it and stuff it into the queue. */ | |
624 | if (portman_data_avail(pm, 0)) { | |
625 | /* Read Midi */ | |
626 | midivalue = portman_read_midi(pm, 0); | |
627 | /* put midi into queue... */ | |
628 | if (pm->mode[0] & PORTMAN2X4_MODE_INPUT_TRIGGERED) | |
629 | snd_rawmidi_receive(pm->midi_input[0], | |
630 | &midivalue, 1); | |
631 | ||
632 | } | |
633 | /* If data available on channel 1, | |
634 | read it and stuff it into the queue. */ | |
635 | if (portman_data_avail(pm, 1)) { | |
636 | /* Read Midi */ | |
637 | midivalue = portman_read_midi(pm, 1); | |
638 | /* put midi into queue... */ | |
639 | if (pm->mode[1] & PORTMAN2X4_MODE_INPUT_TRIGGERED) | |
640 | snd_rawmidi_receive(pm->midi_input[1], | |
641 | &midivalue, 1); | |
642 | } | |
643 | ||
644 | } | |
645 | ||
646 | spin_unlock(&pm->reg_lock); | |
647 | } | |
648 | ||
649 | static int __devinit snd_portman_probe_port(struct parport *p) | |
650 | { | |
651 | struct pardevice *pardev; | |
652 | int res; | |
653 | ||
654 | pardev = parport_register_device(p, DRIVER_NAME, | |
655 | NULL, NULL, NULL, | |
656 | 0, NULL); | |
657 | if (!pardev) | |
658 | return -EIO; | |
659 | ||
660 | if (parport_claim(pardev)) { | |
661 | parport_unregister_device(pardev); | |
662 | return -EIO; | |
663 | } | |
664 | ||
665 | res = portman_probe(p); | |
666 | ||
667 | parport_release(pardev); | |
668 | parport_unregister_device(pardev); | |
669 | ||
37435446 | 670 | return res ? -EIO : 0; |
757e119b MK |
671 | } |
672 | ||
673 | static void __devinit snd_portman_attach(struct parport *p) | |
674 | { | |
675 | struct platform_device *device; | |
676 | ||
677 | device = platform_device_alloc(PLATFORM_DRIVER, device_count); | |
479ef436 | 678 | if (!device) |
757e119b MK |
679 | return; |
680 | ||
681 | /* Temporary assignment to forward the parport */ | |
682 | platform_set_drvdata(device, p); | |
683 | ||
479ef436 | 684 | if (platform_device_add(device) < 0) { |
757e119b MK |
685 | platform_device_put(device); |
686 | return; | |
687 | } | |
688 | ||
689 | /* Since we dont get the return value of probe | |
690 | * We need to check if device probing succeeded or not */ | |
691 | if (!platform_get_drvdata(device)) { | |
692 | platform_device_unregister(device); | |
693 | return; | |
694 | } | |
695 | ||
696 | /* register device in global table */ | |
697 | platform_devices[device_count] = device; | |
698 | device_count++; | |
699 | } | |
700 | ||
701 | static void snd_portman_detach(struct parport *p) | |
702 | { | |
703 | /* nothing to do here */ | |
704 | } | |
705 | ||
706 | static struct parport_driver portman_parport_driver = { | |
707 | .name = "portman2x4", | |
708 | .attach = snd_portman_attach, | |
709 | .detach = snd_portman_detach | |
710 | }; | |
711 | ||
712 | /********************************************************************* | |
713 | * platform stuff | |
714 | *********************************************************************/ | |
715 | static void snd_portman_card_private_free(struct snd_card *card) | |
716 | { | |
717 | struct portman *pm = card->private_data; | |
718 | struct pardevice *pardev = pm->pardev; | |
719 | ||
720 | if (pardev) { | |
721 | if (pm->pardev_claimed) | |
722 | parport_release(pardev); | |
723 | parport_unregister_device(pardev); | |
724 | } | |
725 | ||
726 | portman_free(pm); | |
727 | } | |
728 | ||
729 | static int __devinit snd_portman_probe(struct platform_device *pdev) | |
730 | { | |
731 | struct pardevice *pardev; | |
732 | struct parport *p; | |
733 | int dev = pdev->id; | |
734 | struct snd_card *card = NULL; | |
735 | struct portman *pm = NULL; | |
736 | int err; | |
737 | ||
738 | p = platform_get_drvdata(pdev); | |
739 | platform_set_drvdata(pdev, NULL); | |
740 | ||
741 | if (dev >= SNDRV_CARDS) | |
742 | return -ENODEV; | |
743 | if (!enable[dev]) | |
744 | return -ENOENT; | |
745 | ||
746 | if ((err = snd_portman_probe_port(p)) < 0) | |
747 | return err; | |
748 | ||
749 | card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0); | |
750 | if (card == NULL) { | |
751 | snd_printd("Cannot create card\n"); | |
752 | return -ENOMEM; | |
753 | } | |
754 | strcpy(card->driver, DRIVER_NAME); | |
755 | strcpy(card->shortname, CARD_NAME); | |
756 | sprintf(card->longname, "%s at 0x%lx, irq %i", | |
757 | card->shortname, p->base, p->irq); | |
758 | ||
759 | pardev = parport_register_device(p, /* port */ | |
760 | DRIVER_NAME, /* name */ | |
761 | NULL, /* preempt */ | |
762 | NULL, /* wakeup */ | |
763 | snd_portman_interrupt, /* ISR */ | |
764 | PARPORT_DEV_EXCL, /* flags */ | |
765 | (void *)card); /* private */ | |
766 | if (pardev == NULL) { | |
767 | snd_printd("Cannot register pardevice\n"); | |
768 | err = -EIO; | |
769 | goto __err; | |
770 | } | |
771 | ||
772 | if ((err = portman_create(card, pardev, &pm)) < 0) { | |
773 | snd_printd("Cannot create main component\n"); | |
774 | parport_unregister_device(pardev); | |
775 | goto __err; | |
776 | } | |
777 | card->private_data = pm; | |
778 | card->private_free = snd_portman_card_private_free; | |
779 | ||
780 | if ((err = snd_portman_rawmidi_create(card)) < 0) { | |
781 | snd_printd("Creating Rawmidi component failed\n"); | |
782 | goto __err; | |
783 | } | |
784 | ||
785 | /* claim parport */ | |
786 | if (parport_claim(pardev)) { | |
787 | snd_printd("Cannot claim parport 0x%lx\n", pardev->port->base); | |
788 | err = -EIO; | |
789 | goto __err; | |
790 | } | |
791 | pm->pardev_claimed = 1; | |
792 | ||
793 | /* init device */ | |
794 | if ((err = portman_device_init(pm)) < 0) | |
795 | goto __err; | |
796 | ||
797 | platform_set_drvdata(pdev, card); | |
798 | ||
d47ac433 TI |
799 | snd_card_set_dev(card, &pdev->dev); |
800 | ||
757e119b MK |
801 | /* At this point card will be usable */ |
802 | if ((err = snd_card_register(card)) < 0) { | |
803 | snd_printd("Cannot register card\n"); | |
804 | goto __err; | |
805 | } | |
806 | ||
807 | snd_printk(KERN_INFO "Portman 2x4 on 0x%lx\n", p->base); | |
808 | return 0; | |
809 | ||
810 | __err: | |
811 | snd_card_free(card); | |
812 | return err; | |
813 | } | |
814 | ||
788c6043 | 815 | static int __devexit snd_portman_remove(struct platform_device *pdev) |
757e119b MK |
816 | { |
817 | struct snd_card *card = platform_get_drvdata(pdev); | |
818 | ||
819 | if (card) | |
820 | snd_card_free(card); | |
821 | ||
822 | return 0; | |
823 | } | |
824 | ||
825 | ||
826 | static struct platform_driver snd_portman_driver = { | |
827 | .probe = snd_portman_probe, | |
9879951a | 828 | .remove = __devexit_p(snd_portman_remove), |
757e119b MK |
829 | .driver = { |
830 | .name = PLATFORM_DRIVER | |
831 | } | |
832 | }; | |
833 | ||
834 | /********************************************************************* | |
835 | * module init stuff | |
836 | *********************************************************************/ | |
3c2b576d | 837 | static void snd_portman_unregister_all(void) |
757e119b MK |
838 | { |
839 | int i; | |
840 | ||
841 | for (i = 0; i < SNDRV_CARDS; ++i) { | |
842 | if (platform_devices[i]) { | |
843 | platform_device_unregister(platform_devices[i]); | |
844 | platform_devices[i] = NULL; | |
845 | } | |
846 | } | |
847 | platform_driver_unregister(&snd_portman_driver); | |
848 | parport_unregister_driver(&portman_parport_driver); | |
849 | } | |
850 | ||
851 | static int __init snd_portman_module_init(void) | |
852 | { | |
853 | int err; | |
854 | ||
855 | if ((err = platform_driver_register(&snd_portman_driver)) < 0) | |
856 | return err; | |
857 | ||
858 | if (parport_register_driver(&portman_parport_driver) != 0) { | |
859 | platform_driver_unregister(&snd_portman_driver); | |
860 | return -EIO; | |
861 | } | |
862 | ||
863 | if (device_count == 0) { | |
864 | snd_portman_unregister_all(); | |
865 | return -ENODEV; | |
866 | } | |
867 | ||
868 | return 0; | |
869 | } | |
870 | ||
871 | static void __exit snd_portman_module_exit(void) | |
872 | { | |
873 | snd_portman_unregister_all(); | |
874 | } | |
875 | ||
876 | module_init(snd_portman_module_init); | |
877 | module_exit(snd_portman_module_exit); |