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74ba9207 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
757e119b MK |
2 | /* |
3 | * Driver for Midiman Portman2x4 parallel port midi interface | |
4 | * | |
5 | * Copyright (c) by Levent Guendogdu <levon@feature-it.com> | |
6 | * | |
757e119b MK |
7 | * ChangeLog |
8 | * Jan 24 2007 Matthias Koenig <mkoenig@suse.de> | |
9 | * - cleanup and rewrite | |
10 | * Sep 30 2004 Tobias Gehrig <tobias@gehrig.tk> | |
11 | * - source code cleanup | |
12 | * Sep 03 2004 Tobias Gehrig <tobias@gehrig.tk> | |
13 | * - fixed compilation problem with alsa 1.0.6a (removed MODULE_CLASSES, | |
14 | * MODULE_PARM_SYNTAX and changed MODULE_DEVICES to | |
15 | * MODULE_SUPPORTED_DEVICE) | |
16 | * Mar 24 2004 Tobias Gehrig <tobias@gehrig.tk> | |
17 | * - added 2.6 kernel support | |
18 | * Mar 18 2004 Tobias Gehrig <tobias@gehrig.tk> | |
19 | * - added parport_unregister_driver to the startup routine if the driver fails to detect a portman | |
20 | * - added support for all 4 output ports in portman_putmidi | |
21 | * Mar 17 2004 Tobias Gehrig <tobias@gehrig.tk> | |
22 | * - added checks for opened input device in interrupt handler | |
23 | * Feb 20 2004 Tobias Gehrig <tobias@gehrig.tk> | |
24 | * - ported from alsa 0.5 to 1.0 | |
25 | */ | |
26 | ||
757e119b MK |
27 | #include <linux/init.h> |
28 | #include <linux/platform_device.h> | |
29 | #include <linux/parport.h> | |
30 | #include <linux/spinlock.h> | |
31 | #include <linux/delay.h> | |
5a0e3ad6 | 32 | #include <linux/slab.h> |
da155d5b | 33 | #include <linux/module.h> |
757e119b MK |
34 | #include <sound/core.h> |
35 | #include <sound/initval.h> | |
36 | #include <sound/rawmidi.h> | |
37 | #include <sound/control.h> | |
38 | ||
39 | #define CARD_NAME "Portman 2x4" | |
40 | #define DRIVER_NAME "portman" | |
41 | #define PLATFORM_DRIVER "snd_portman2x4" | |
42 | ||
43 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; | |
44 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; | |
a67ff6a5 | 45 | static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; |
757e119b MK |
46 | |
47 | static struct platform_device *platform_devices[SNDRV_CARDS]; | |
48 | static int device_count; | |
49 | ||
6a73cf46 | 50 | module_param_array(index, int, NULL, 0444); |
757e119b | 51 | MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard."); |
6a73cf46 | 52 | module_param_array(id, charp, NULL, 0444); |
757e119b | 53 | MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard."); |
6a73cf46 | 54 | module_param_array(enable, bool, NULL, 0444); |
757e119b MK |
55 | MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard."); |
56 | ||
57 | MODULE_AUTHOR("Levent Guendogdu, Tobias Gehrig, Matthias Koenig"); | |
58 | MODULE_DESCRIPTION("Midiman Portman2x4"); | |
59 | MODULE_LICENSE("GPL"); | |
757e119b MK |
60 | |
61 | /********************************************************************* | |
62 | * Chip specific | |
63 | *********************************************************************/ | |
64 | #define PORTMAN_NUM_INPUT_PORTS 2 | |
65 | #define PORTMAN_NUM_OUTPUT_PORTS 4 | |
66 | ||
67 | struct portman { | |
68 | spinlock_t reg_lock; | |
69 | struct snd_card *card; | |
70 | struct snd_rawmidi *rmidi; | |
71 | struct pardevice *pardev; | |
757e119b MK |
72 | int open_count; |
73 | int mode[PORTMAN_NUM_INPUT_PORTS]; | |
74 | struct snd_rawmidi_substream *midi_input[PORTMAN_NUM_INPUT_PORTS]; | |
75 | }; | |
76 | ||
77 | static int portman_free(struct portman *pm) | |
78 | { | |
79 | kfree(pm); | |
80 | return 0; | |
81 | } | |
82 | ||
fbbb01a1 BP |
83 | static int portman_create(struct snd_card *card, |
84 | struct pardevice *pardev, | |
85 | struct portman **rchip) | |
757e119b MK |
86 | { |
87 | struct portman *pm; | |
88 | ||
89 | *rchip = NULL; | |
90 | ||
91 | pm = kzalloc(sizeof(struct portman), GFP_KERNEL); | |
92 | if (pm == NULL) | |
93 | return -ENOMEM; | |
94 | ||
95 | /* Init chip specific data */ | |
96 | spin_lock_init(&pm->reg_lock); | |
97 | pm->card = card; | |
98 | pm->pardev = pardev; | |
99 | ||
100 | *rchip = pm; | |
101 | ||
102 | return 0; | |
103 | } | |
104 | ||
105 | /********************************************************************* | |
106 | * HW related constants | |
107 | *********************************************************************/ | |
108 | ||
109 | /* Standard PC parallel port status register equates. */ | |
110 | #define PP_STAT_BSY 0x80 /* Busy status. Inverted. */ | |
111 | #define PP_STAT_ACK 0x40 /* Acknowledge. Non-Inverted. */ | |
112 | #define PP_STAT_POUT 0x20 /* Paper Out. Non-Inverted. */ | |
113 | #define PP_STAT_SEL 0x10 /* Select. Non-Inverted. */ | |
114 | #define PP_STAT_ERR 0x08 /* Error. Non-Inverted. */ | |
115 | ||
116 | /* Standard PC parallel port command register equates. */ | |
117 | #define PP_CMD_IEN 0x10 /* IRQ Enable. Non-Inverted. */ | |
118 | #define PP_CMD_SELI 0x08 /* Select Input. Inverted. */ | |
119 | #define PP_CMD_INIT 0x04 /* Init Printer. Non-Inverted. */ | |
120 | #define PP_CMD_FEED 0x02 /* Auto Feed. Inverted. */ | |
121 | #define PP_CMD_STB 0x01 /* Strobe. Inverted. */ | |
122 | ||
123 | /* Parallel Port Command Register as implemented by PCP2x4. */ | |
124 | #define INT_EN PP_CMD_IEN /* Interrupt enable. */ | |
125 | #define STROBE PP_CMD_STB /* Command strobe. */ | |
126 | ||
127 | /* The parallel port command register field (b1..b3) selects the | |
128 | * various "registers" within the PC/P 2x4. These are the internal | |
129 | * address of these "registers" that must be written to the parallel | |
130 | * port command register. | |
131 | */ | |
132 | #define RXDATA0 (0 << 1) /* PCP RxData channel 0. */ | |
133 | #define RXDATA1 (1 << 1) /* PCP RxData channel 1. */ | |
134 | #define GEN_CTL (2 << 1) /* PCP General Control Register. */ | |
135 | #define SYNC_CTL (3 << 1) /* PCP Sync Control Register. */ | |
136 | #define TXDATA0 (4 << 1) /* PCP TxData channel 0. */ | |
137 | #define TXDATA1 (5 << 1) /* PCP TxData channel 1. */ | |
138 | #define TXDATA2 (6 << 1) /* PCP TxData channel 2. */ | |
139 | #define TXDATA3 (7 << 1) /* PCP TxData channel 3. */ | |
140 | ||
141 | /* Parallel Port Status Register as implemented by PCP2x4. */ | |
142 | #define ESTB PP_STAT_POUT /* Echoed strobe. */ | |
143 | #define INT_REQ PP_STAT_ACK /* Input data int request. */ | |
144 | #define BUSY PP_STAT_ERR /* Interface Busy. */ | |
145 | ||
146 | /* Parallel Port Status Register BUSY and SELECT lines are multiplexed | |
147 | * between several functions. Depending on which 2x4 "register" is | |
148 | * currently selected (b1..b3), the BUSY and SELECT lines are | |
149 | * assigned as follows: | |
150 | * | |
151 | * SELECT LINE: A3 A2 A1 | |
152 | * -------- | |
153 | */ | |
154 | #define RXAVAIL PP_STAT_SEL /* Rx Available, channel 0. 0 0 0 */ | |
155 | // RXAVAIL1 PP_STAT_SEL /* Rx Available, channel 1. 0 0 1 */ | |
156 | #define SYNC_STAT PP_STAT_SEL /* Reserved - Sync Status. 0 1 0 */ | |
157 | // /* Reserved. 0 1 1 */ | |
158 | #define TXEMPTY PP_STAT_SEL /* Tx Empty, channel 0. 1 0 0 */ | |
159 | // TXEMPTY1 PP_STAT_SEL /* Tx Empty, channel 1. 1 0 1 */ | |
160 | // TXEMPTY2 PP_STAT_SEL /* Tx Empty, channel 2. 1 1 0 */ | |
161 | // TXEMPTY3 PP_STAT_SEL /* Tx Empty, channel 3. 1 1 1 */ | |
162 | ||
163 | /* BUSY LINE: A3 A2 A1 | |
164 | * -------- | |
165 | */ | |
166 | #define RXDATA PP_STAT_BSY /* Rx Input Data, channel 0. 0 0 0 */ | |
167 | // RXDATA1 PP_STAT_BSY /* Rx Input Data, channel 1. 0 0 1 */ | |
168 | #define SYNC_DATA PP_STAT_BSY /* Reserved - Sync Data. 0 1 0 */ | |
169 | /* Reserved. 0 1 1 */ | |
170 | #define DATA_ECHO PP_STAT_BSY /* Parallel Port Data Echo. 1 0 0 */ | |
171 | #define A0_ECHO PP_STAT_BSY /* Address 0 Echo. 1 0 1 */ | |
172 | #define A1_ECHO PP_STAT_BSY /* Address 1 Echo. 1 1 0 */ | |
173 | #define A2_ECHO PP_STAT_BSY /* Address 2 Echo. 1 1 1 */ | |
174 | ||
175 | #define PORTMAN2X4_MODE_INPUT_TRIGGERED 0x01 | |
176 | ||
177 | /********************************************************************* | |
178 | * Hardware specific functions | |
179 | *********************************************************************/ | |
180 | static inline void portman_write_command(struct portman *pm, u8 value) | |
181 | { | |
182 | parport_write_control(pm->pardev->port, value); | |
183 | } | |
184 | ||
757e119b MK |
185 | static inline u8 portman_read_status(struct portman *pm) |
186 | { | |
187 | return parport_read_status(pm->pardev->port); | |
188 | } | |
189 | ||
757e119b MK |
190 | static inline void portman_write_data(struct portman *pm, u8 value) |
191 | { | |
192 | parport_write_data(pm->pardev->port, value); | |
193 | } | |
194 | ||
195 | static void portman_write_midi(struct portman *pm, | |
196 | int port, u8 mididata) | |
197 | { | |
198 | int command = ((port + 4) << 1); | |
199 | ||
200 | /* Get entering data byte and port number in BL and BH respectively. | |
201 | * Set up Tx Channel address field for use with PP Cmd Register. | |
202 | * Store address field in BH register. | |
203 | * Inputs: AH = Output port number (0..3). | |
204 | * AL = Data byte. | |
205 | * command = TXDATA0 | INT_EN; | |
206 | * Align port num with address field (b1...b3), | |
207 | * set address for TXDatax, Strobe=0 | |
208 | */ | |
209 | command |= INT_EN; | |
210 | ||
211 | /* Disable interrupts so that the process is not interrupted, then | |
212 | * write the address associated with the current Tx channel to the | |
213 | * PP Command Reg. Do not set the Strobe signal yet. | |
214 | */ | |
215 | ||
216 | do { | |
217 | portman_write_command(pm, command); | |
218 | ||
219 | /* While the address lines settle, write parallel output data to | |
220 | * PP Data Reg. This has no effect until Strobe signal is asserted. | |
221 | */ | |
222 | ||
223 | portman_write_data(pm, mididata); | |
224 | ||
225 | /* If PCP channel's TxEmpty is set (TxEmpty is read through the PP | |
226 | * Status Register), then go write data. Else go back and wait. | |
227 | */ | |
228 | } while ((portman_read_status(pm) & TXEMPTY) != TXEMPTY); | |
229 | ||
230 | /* TxEmpty is set. Maintain PC/P destination address and assert | |
231 | * Strobe through the PP Command Reg. This will Strobe data into | |
232 | * the PC/P transmitter and set the PC/P BUSY signal. | |
233 | */ | |
234 | ||
235 | portman_write_command(pm, command | STROBE); | |
236 | ||
237 | /* Wait for strobe line to settle and echo back through hardware. | |
238 | * Once it has echoed back, assume that the address and data lines | |
239 | * have settled! | |
240 | */ | |
241 | ||
242 | while ((portman_read_status(pm) & ESTB) == 0) | |
243 | cpu_relax(); | |
244 | ||
245 | /* Release strobe and immediately re-allow interrupts. */ | |
246 | portman_write_command(pm, command); | |
247 | ||
248 | while ((portman_read_status(pm) & ESTB) == ESTB) | |
249 | cpu_relax(); | |
250 | ||
251 | /* PC/P BUSY is now set. We must wait until BUSY resets itself. | |
252 | * We'll reenable ints while we're waiting. | |
253 | */ | |
254 | ||
255 | while ((portman_read_status(pm) & BUSY) == BUSY) | |
256 | cpu_relax(); | |
257 | ||
258 | /* Data sent. */ | |
259 | } | |
260 | ||
261 | ||
262 | /* | |
263 | * Read MIDI byte from port | |
264 | * Attempt to read input byte from specified hardware input port (0..). | |
265 | * Return -1 if no data | |
266 | */ | |
267 | static int portman_read_midi(struct portman *pm, int port) | |
268 | { | |
269 | unsigned char midi_data = 0; | |
270 | unsigned char cmdout; /* Saved address+IE bit. */ | |
271 | ||
272 | /* Make sure clocking edge is down before starting... */ | |
273 | portman_write_data(pm, 0); /* Make sure edge is down. */ | |
274 | ||
275 | /* Set destination address to PCP. */ | |
276 | cmdout = (port << 1) | INT_EN; /* Address + IE + No Strobe. */ | |
277 | portman_write_command(pm, cmdout); | |
278 | ||
279 | while ((portman_read_status(pm) & ESTB) == ESTB) | |
280 | cpu_relax(); /* Wait for strobe echo. */ | |
281 | ||
282 | /* After the address lines settle, check multiplexed RxAvail signal. | |
283 | * If data is available, read it. | |
284 | */ | |
285 | if ((portman_read_status(pm) & RXAVAIL) == 0) | |
286 | return -1; /* No data. */ | |
287 | ||
288 | /* Set the Strobe signal to enable the Rx clocking circuitry. */ | |
289 | portman_write_command(pm, cmdout | STROBE); /* Write address+IE+Strobe. */ | |
290 | ||
291 | while ((portman_read_status(pm) & ESTB) == 0) | |
292 | cpu_relax(); /* Wait for strobe echo. */ | |
293 | ||
294 | /* The first data bit (msb) is already sitting on the input line. */ | |
295 | midi_data = (portman_read_status(pm) & 128); | |
296 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
297 | ||
298 | /* Data bit 6. */ | |
299 | portman_write_data(pm, 0); /* Cause falling edge while data settles. */ | |
300 | midi_data |= (portman_read_status(pm) >> 1) & 64; | |
301 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
302 | ||
303 | /* Data bit 5. */ | |
304 | portman_write_data(pm, 0); /* Cause falling edge while data settles. */ | |
305 | midi_data |= (portman_read_status(pm) >> 2) & 32; | |
306 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
307 | ||
308 | /* Data bit 4. */ | |
309 | portman_write_data(pm, 0); /* Cause falling edge while data settles. */ | |
310 | midi_data |= (portman_read_status(pm) >> 3) & 16; | |
311 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
312 | ||
313 | /* Data bit 3. */ | |
314 | portman_write_data(pm, 0); /* Cause falling edge while data settles. */ | |
315 | midi_data |= (portman_read_status(pm) >> 4) & 8; | |
316 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
317 | ||
318 | /* Data bit 2. */ | |
319 | portman_write_data(pm, 0); /* Cause falling edge while data settles. */ | |
320 | midi_data |= (portman_read_status(pm) >> 5) & 4; | |
321 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
322 | ||
323 | /* Data bit 1. */ | |
324 | portman_write_data(pm, 0); /* Cause falling edge while data settles. */ | |
325 | midi_data |= (portman_read_status(pm) >> 6) & 2; | |
326 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
327 | ||
328 | /* Data bit 0. */ | |
329 | portman_write_data(pm, 0); /* Cause falling edge while data settles. */ | |
330 | midi_data |= (portman_read_status(pm) >> 7) & 1; | |
331 | portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */ | |
332 | portman_write_data(pm, 0); /* Return data clock low. */ | |
333 | ||
334 | ||
335 | /* De-assert Strobe and return data. */ | |
336 | portman_write_command(pm, cmdout); /* Output saved address+IE. */ | |
337 | ||
338 | /* Wait for strobe echo. */ | |
339 | while ((portman_read_status(pm) & ESTB) == ESTB) | |
340 | cpu_relax(); | |
341 | ||
342 | return (midi_data & 255); /* Shift back and return value. */ | |
343 | } | |
344 | ||
345 | /* | |
346 | * Checks if any input data on the given channel is available | |
347 | * Checks RxAvail | |
348 | */ | |
349 | static int portman_data_avail(struct portman *pm, int channel) | |
350 | { | |
351 | int command = INT_EN; | |
352 | switch (channel) { | |
353 | case 0: | |
354 | command |= RXDATA0; | |
355 | break; | |
356 | case 1: | |
357 | command |= RXDATA1; | |
358 | break; | |
359 | } | |
360 | /* Write hardware (assumme STROBE=0) */ | |
361 | portman_write_command(pm, command); | |
362 | /* Check multiplexed RxAvail signal */ | |
363 | if ((portman_read_status(pm) & RXAVAIL) == RXAVAIL) | |
364 | return 1; /* Data available */ | |
365 | ||
366 | /* No Data available */ | |
367 | return 0; | |
368 | } | |
369 | ||
370 | ||
371 | /* | |
372 | * Flushes any input | |
373 | */ | |
374 | static void portman_flush_input(struct portman *pm, unsigned char port) | |
375 | { | |
376 | /* Local variable for counting things */ | |
377 | unsigned int i = 0; | |
378 | unsigned char command = 0; | |
379 | ||
380 | switch (port) { | |
381 | case 0: | |
382 | command = RXDATA0; | |
383 | break; | |
384 | case 1: | |
385 | command = RXDATA1; | |
386 | break; | |
387 | default: | |
388 | snd_printk(KERN_WARNING | |
389 | "portman_flush_input() Won't flush port %i\n", | |
390 | port); | |
391 | return; | |
392 | } | |
393 | ||
394 | /* Set address for specified channel in port and allow to settle. */ | |
395 | portman_write_command(pm, command); | |
396 | ||
397 | /* Assert the Strobe and wait for echo back. */ | |
398 | portman_write_command(pm, command | STROBE); | |
399 | ||
400 | /* Wait for ESTB */ | |
401 | while ((portman_read_status(pm) & ESTB) == 0) | |
402 | cpu_relax(); | |
403 | ||
404 | /* Output clock cycles to the Rx circuitry. */ | |
405 | portman_write_data(pm, 0); | |
406 | ||
407 | /* Flush 250 bits... */ | |
408 | for (i = 0; i < 250; i++) { | |
409 | portman_write_data(pm, 1); | |
410 | portman_write_data(pm, 0); | |
411 | } | |
412 | ||
413 | /* Deassert the Strobe signal of the port and wait for it to settle. */ | |
414 | portman_write_command(pm, command | INT_EN); | |
415 | ||
416 | /* Wait for settling */ | |
417 | while ((portman_read_status(pm) & ESTB) == ESTB) | |
418 | cpu_relax(); | |
419 | } | |
420 | ||
421 | static int portman_probe(struct parport *p) | |
422 | { | |
423 | /* Initialize the parallel port data register. Will set Rx clocks | |
424 | * low in case we happen to be addressing the Rx ports at this time. | |
425 | */ | |
426 | /* 1 */ | |
427 | parport_write_data(p, 0); | |
428 | ||
429 | /* Initialize the parallel port command register, thus initializing | |
430 | * hardware handshake lines to midi box: | |
431 | * | |
432 | * Strobe = 0 | |
433 | * Interrupt Enable = 0 | |
434 | */ | |
435 | /* 2 */ | |
436 | parport_write_control(p, 0); | |
437 | ||
438 | /* Check if Portman PC/P 2x4 is out there. */ | |
439 | /* 3 */ | |
440 | parport_write_control(p, RXDATA0); /* Write Strobe=0 to command reg. */ | |
441 | ||
442 | /* Check for ESTB to be clear */ | |
443 | /* 4 */ | |
444 | if ((parport_read_status(p) & ESTB) == ESTB) | |
445 | return 1; /* CODE 1 - Strobe Failure. */ | |
446 | ||
447 | /* Set for RXDATA0 where no damage will be done. */ | |
448 | /* 5 */ | |
28a04aa3 | 449 | parport_write_control(p, RXDATA0 | STROBE); /* Write Strobe=1 to command reg. */ |
757e119b MK |
450 | |
451 | /* 6 */ | |
452 | if ((parport_read_status(p) & ESTB) != ESTB) | |
453 | return 1; /* CODE 1 - Strobe Failure. */ | |
454 | ||
455 | /* 7 */ | |
456 | parport_write_control(p, 0); /* Reset Strobe=0. */ | |
457 | ||
458 | /* Check if Tx circuitry is functioning properly. If initialized | |
86b9c4cd | 459 | * unit TxEmpty is false, send out char and see if it goes true. |
757e119b MK |
460 | */ |
461 | /* 8 */ | |
462 | parport_write_control(p, TXDATA0); /* Tx channel 0, strobe off. */ | |
463 | ||
464 | /* If PCP channel's TxEmpty is set (TxEmpty is read through the PP | |
465 | * Status Register), then go write data. Else go back and wait. | |
466 | */ | |
467 | /* 9 */ | |
468 | if ((parport_read_status(p) & TXEMPTY) == 0) | |
469 | return 2; | |
470 | ||
471 | /* Return OK status. */ | |
472 | return 0; | |
473 | } | |
474 | ||
475 | static int portman_device_init(struct portman *pm) | |
476 | { | |
477 | portman_flush_input(pm, 0); | |
478 | portman_flush_input(pm, 1); | |
479 | ||
480 | return 0; | |
481 | } | |
482 | ||
483 | /********************************************************************* | |
484 | * Rawmidi | |
485 | *********************************************************************/ | |
486 | static int snd_portman_midi_open(struct snd_rawmidi_substream *substream) | |
487 | { | |
488 | return 0; | |
489 | } | |
490 | ||
491 | static int snd_portman_midi_close(struct snd_rawmidi_substream *substream) | |
492 | { | |
493 | return 0; | |
494 | } | |
495 | ||
496 | static void snd_portman_midi_input_trigger(struct snd_rawmidi_substream *substream, | |
497 | int up) | |
498 | { | |
499 | struct portman *pm = substream->rmidi->private_data; | |
500 | unsigned long flags; | |
501 | ||
502 | spin_lock_irqsave(&pm->reg_lock, flags); | |
503 | if (up) | |
504 | pm->mode[substream->number] |= PORTMAN2X4_MODE_INPUT_TRIGGERED; | |
505 | else | |
506 | pm->mode[substream->number] &= ~PORTMAN2X4_MODE_INPUT_TRIGGERED; | |
507 | spin_unlock_irqrestore(&pm->reg_lock, flags); | |
508 | } | |
509 | ||
510 | static void snd_portman_midi_output_trigger(struct snd_rawmidi_substream *substream, | |
511 | int up) | |
512 | { | |
513 | struct portman *pm = substream->rmidi->private_data; | |
514 | unsigned long flags; | |
515 | unsigned char byte; | |
516 | ||
517 | spin_lock_irqsave(&pm->reg_lock, flags); | |
518 | if (up) { | |
519 | while ((snd_rawmidi_transmit(substream, &byte, 1) == 1)) | |
520 | portman_write_midi(pm, substream->number, byte); | |
521 | } | |
522 | spin_unlock_irqrestore(&pm->reg_lock, flags); | |
523 | } | |
524 | ||
c36f486d | 525 | static const struct snd_rawmidi_ops snd_portman_midi_output = { |
757e119b MK |
526 | .open = snd_portman_midi_open, |
527 | .close = snd_portman_midi_close, | |
528 | .trigger = snd_portman_midi_output_trigger, | |
529 | }; | |
530 | ||
c36f486d | 531 | static const struct snd_rawmidi_ops snd_portman_midi_input = { |
757e119b MK |
532 | .open = snd_portman_midi_open, |
533 | .close = snd_portman_midi_close, | |
534 | .trigger = snd_portman_midi_input_trigger, | |
535 | }; | |
536 | ||
537 | /* Create and initialize the rawmidi component */ | |
fbbb01a1 | 538 | static int snd_portman_rawmidi_create(struct snd_card *card) |
757e119b MK |
539 | { |
540 | struct portman *pm = card->private_data; | |
541 | struct snd_rawmidi *rmidi; | |
542 | struct snd_rawmidi_substream *substream; | |
543 | int err; | |
544 | ||
545 | err = snd_rawmidi_new(card, CARD_NAME, 0, | |
546 | PORTMAN_NUM_OUTPUT_PORTS, | |
547 | PORTMAN_NUM_INPUT_PORTS, | |
548 | &rmidi); | |
549 | if (err < 0) | |
550 | return err; | |
551 | ||
552 | rmidi->private_data = pm; | |
553 | strcpy(rmidi->name, CARD_NAME); | |
554 | rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT | | |
555 | SNDRV_RAWMIDI_INFO_INPUT | | |
556 | SNDRV_RAWMIDI_INFO_DUPLEX; | |
557 | ||
558 | pm->rmidi = rmidi; | |
559 | ||
560 | /* register rawmidi ops */ | |
561 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, | |
562 | &snd_portman_midi_output); | |
563 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, | |
564 | &snd_portman_midi_input); | |
565 | ||
566 | /* name substreams */ | |
567 | /* output */ | |
568 | list_for_each_entry(substream, | |
569 | &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams, | |
570 | list) { | |
571 | sprintf(substream->name, | |
572 | "Portman2x4 %d", substream->number+1); | |
573 | } | |
574 | /* input */ | |
575 | list_for_each_entry(substream, | |
576 | &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams, | |
577 | list) { | |
578 | pm->midi_input[substream->number] = substream; | |
579 | sprintf(substream->name, | |
580 | "Portman2x4 %d", substream->number+1); | |
581 | } | |
582 | ||
583 | return err; | |
584 | } | |
585 | ||
586 | /********************************************************************* | |
587 | * parport stuff | |
588 | *********************************************************************/ | |
5712cb3d | 589 | static void snd_portman_interrupt(void *userdata) |
757e119b MK |
590 | { |
591 | unsigned char midivalue = 0; | |
592 | struct portman *pm = ((struct snd_card*)userdata)->private_data; | |
593 | ||
594 | spin_lock(&pm->reg_lock); | |
595 | ||
596 | /* While any input data is waiting */ | |
597 | while ((portman_read_status(pm) & INT_REQ) == INT_REQ) { | |
598 | /* If data available on channel 0, | |
599 | read it and stuff it into the queue. */ | |
600 | if (portman_data_avail(pm, 0)) { | |
601 | /* Read Midi */ | |
602 | midivalue = portman_read_midi(pm, 0); | |
603 | /* put midi into queue... */ | |
604 | if (pm->mode[0] & PORTMAN2X4_MODE_INPUT_TRIGGERED) | |
605 | snd_rawmidi_receive(pm->midi_input[0], | |
606 | &midivalue, 1); | |
607 | ||
608 | } | |
609 | /* If data available on channel 1, | |
610 | read it and stuff it into the queue. */ | |
611 | if (portman_data_avail(pm, 1)) { | |
612 | /* Read Midi */ | |
613 | midivalue = portman_read_midi(pm, 1); | |
614 | /* put midi into queue... */ | |
615 | if (pm->mode[1] & PORTMAN2X4_MODE_INPUT_TRIGGERED) | |
616 | snd_rawmidi_receive(pm->midi_input[1], | |
617 | &midivalue, 1); | |
618 | } | |
619 | ||
620 | } | |
621 | ||
622 | spin_unlock(&pm->reg_lock); | |
623 | } | |
624 | ||
fbbb01a1 | 625 | static void snd_portman_attach(struct parport *p) |
757e119b MK |
626 | { |
627 | struct platform_device *device; | |
628 | ||
629 | device = platform_device_alloc(PLATFORM_DRIVER, device_count); | |
479ef436 | 630 | if (!device) |
757e119b MK |
631 | return; |
632 | ||
633 | /* Temporary assignment to forward the parport */ | |
634 | platform_set_drvdata(device, p); | |
635 | ||
479ef436 | 636 | if (platform_device_add(device) < 0) { |
757e119b MK |
637 | platform_device_put(device); |
638 | return; | |
639 | } | |
640 | ||
641 | /* Since we dont get the return value of probe | |
642 | * We need to check if device probing succeeded or not */ | |
643 | if (!platform_get_drvdata(device)) { | |
644 | platform_device_unregister(device); | |
645 | return; | |
646 | } | |
647 | ||
648 | /* register device in global table */ | |
649 | platform_devices[device_count] = device; | |
650 | device_count++; | |
651 | } | |
652 | ||
653 | static void snd_portman_detach(struct parport *p) | |
654 | { | |
655 | /* nothing to do here */ | |
656 | } | |
657 | ||
e6a1b7e8 SM |
658 | static int snd_portman_dev_probe(struct pardevice *pardev) |
659 | { | |
660 | if (strcmp(pardev->name, DRIVER_NAME)) | |
661 | return -ENODEV; | |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
757e119b | 666 | static struct parport_driver portman_parport_driver = { |
e6a1b7e8 SM |
667 | .name = "portman2x4", |
668 | .probe = snd_portman_dev_probe, | |
669 | .match_port = snd_portman_attach, | |
670 | .detach = snd_portman_detach, | |
671 | .devmodel = true, | |
757e119b MK |
672 | }; |
673 | ||
674 | /********************************************************************* | |
675 | * platform stuff | |
676 | *********************************************************************/ | |
677 | static void snd_portman_card_private_free(struct snd_card *card) | |
678 | { | |
679 | struct portman *pm = card->private_data; | |
680 | struct pardevice *pardev = pm->pardev; | |
681 | ||
682 | if (pardev) { | |
e6a1b7e8 | 683 | parport_release(pardev); |
757e119b MK |
684 | parport_unregister_device(pardev); |
685 | } | |
686 | ||
687 | portman_free(pm); | |
688 | } | |
689 | ||
fbbb01a1 | 690 | static int snd_portman_probe(struct platform_device *pdev) |
757e119b MK |
691 | { |
692 | struct pardevice *pardev; | |
693 | struct parport *p; | |
694 | int dev = pdev->id; | |
695 | struct snd_card *card = NULL; | |
696 | struct portman *pm = NULL; | |
697 | int err; | |
e6a1b7e8 SM |
698 | struct pardev_cb portman_cb = { |
699 | .preempt = NULL, | |
700 | .wakeup = NULL, | |
701 | .irq_func = snd_portman_interrupt, /* ISR */ | |
702 | .flags = PARPORT_DEV_EXCL, /* flags */ | |
703 | }; | |
757e119b MK |
704 | |
705 | p = platform_get_drvdata(pdev); | |
706 | platform_set_drvdata(pdev, NULL); | |
707 | ||
708 | if (dev >= SNDRV_CARDS) | |
709 | return -ENODEV; | |
710 | if (!enable[dev]) | |
711 | return -ENOENT; | |
712 | ||
5872f3f6 TI |
713 | err = snd_card_new(&pdev->dev, index[dev], id[dev], THIS_MODULE, |
714 | 0, &card); | |
bd7dd77c | 715 | if (err < 0) { |
757e119b | 716 | snd_printd("Cannot create card\n"); |
bd7dd77c | 717 | return err; |
757e119b MK |
718 | } |
719 | strcpy(card->driver, DRIVER_NAME); | |
720 | strcpy(card->shortname, CARD_NAME); | |
721 | sprintf(card->longname, "%s at 0x%lx, irq %i", | |
722 | card->shortname, p->base, p->irq); | |
723 | ||
e6a1b7e8 SM |
724 | portman_cb.private = card; /* private */ |
725 | pardev = parport_register_dev_model(p, /* port */ | |
726 | DRIVER_NAME, /* name */ | |
727 | &portman_cb, /* callbacks */ | |
728 | pdev->id); /* device number */ | |
757e119b MK |
729 | if (pardev == NULL) { |
730 | snd_printd("Cannot register pardevice\n"); | |
731 | err = -EIO; | |
732 | goto __err; | |
733 | } | |
734 | ||
e6a1b7e8 SM |
735 | /* claim parport */ |
736 | if (parport_claim(pardev)) { | |
737 | snd_printd("Cannot claim parport 0x%lx\n", pardev->port->base); | |
738 | err = -EIO; | |
739 | goto free_pardev; | |
740 | } | |
e6a1b7e8 | 741 | |
d0ad13ef TI |
742 | err = portman_create(card, pardev, &pm); |
743 | if (err < 0) { | |
757e119b | 744 | snd_printd("Cannot create main component\n"); |
e6a1b7e8 | 745 | goto release_pardev; |
757e119b MK |
746 | } |
747 | card->private_data = pm; | |
748 | card->private_free = snd_portman_card_private_free; | |
03367bf7 SM |
749 | |
750 | err = portman_probe(p); | |
751 | if (err) { | |
752 | err = -EIO; | |
753 | goto __err; | |
754 | } | |
757e119b | 755 | |
d0ad13ef TI |
756 | err = snd_portman_rawmidi_create(card); |
757 | if (err < 0) { | |
757e119b MK |
758 | snd_printd("Creating Rawmidi component failed\n"); |
759 | goto __err; | |
760 | } | |
761 | ||
757e119b | 762 | /* init device */ |
d0ad13ef TI |
763 | err = portman_device_init(pm); |
764 | if (err < 0) | |
757e119b MK |
765 | goto __err; |
766 | ||
767 | platform_set_drvdata(pdev, card); | |
768 | ||
769 | /* At this point card will be usable */ | |
d0ad13ef TI |
770 | err = snd_card_register(card); |
771 | if (err < 0) { | |
757e119b MK |
772 | snd_printd("Cannot register card\n"); |
773 | goto __err; | |
774 | } | |
775 | ||
776 | snd_printk(KERN_INFO "Portman 2x4 on 0x%lx\n", p->base); | |
777 | return 0; | |
778 | ||
e6a1b7e8 SM |
779 | release_pardev: |
780 | parport_release(pardev); | |
781 | free_pardev: | |
782 | parport_unregister_device(pardev); | |
757e119b MK |
783 | __err: |
784 | snd_card_free(card); | |
785 | return err; | |
786 | } | |
787 | ||
962bdc96 | 788 | static void snd_portman_remove(struct platform_device *pdev) |
757e119b MK |
789 | { |
790 | struct snd_card *card = platform_get_drvdata(pdev); | |
791 | ||
792 | if (card) | |
793 | snd_card_free(card); | |
757e119b MK |
794 | } |
795 | ||
796 | ||
797 | static struct platform_driver snd_portman_driver = { | |
798 | .probe = snd_portman_probe, | |
962bdc96 | 799 | .remove_new = snd_portman_remove, |
757e119b | 800 | .driver = { |
8bf01d8a | 801 | .name = PLATFORM_DRIVER, |
757e119b MK |
802 | } |
803 | }; | |
804 | ||
805 | /********************************************************************* | |
806 | * module init stuff | |
807 | *********************************************************************/ | |
3c2b576d | 808 | static void snd_portman_unregister_all(void) |
757e119b MK |
809 | { |
810 | int i; | |
811 | ||
812 | for (i = 0; i < SNDRV_CARDS; ++i) { | |
813 | if (platform_devices[i]) { | |
814 | platform_device_unregister(platform_devices[i]); | |
815 | platform_devices[i] = NULL; | |
816 | } | |
817 | } | |
818 | platform_driver_unregister(&snd_portman_driver); | |
819 | parport_unregister_driver(&portman_parport_driver); | |
820 | } | |
821 | ||
822 | static int __init snd_portman_module_init(void) | |
823 | { | |
824 | int err; | |
825 | ||
d0ad13ef TI |
826 | err = platform_driver_register(&snd_portman_driver); |
827 | if (err < 0) | |
757e119b MK |
828 | return err; |
829 | ||
830 | if (parport_register_driver(&portman_parport_driver) != 0) { | |
831 | platform_driver_unregister(&snd_portman_driver); | |
832 | return -EIO; | |
833 | } | |
834 | ||
835 | if (device_count == 0) { | |
836 | snd_portman_unregister_all(); | |
837 | return -ENODEV; | |
838 | } | |
839 | ||
840 | return 0; | |
841 | } | |
842 | ||
843 | static void __exit snd_portman_module_exit(void) | |
844 | { | |
845 | snd_portman_unregister_all(); | |
846 | } | |
847 | ||
848 | module_init(snd_portman_module_init); | |
849 | module_exit(snd_portman_module_exit); |