1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Driver for Digigram VX soundcards
4 *
5 * Hardware core part
6 *
7 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
8 */
9
10 #include <linux/delay.h>
11 #include <linux/slab.h>
12 #include <linux/interrupt.h>
13 #include <linux/init.h>
14 #include <linux/device.h>
15 #include <linux/firmware.h>
16 #include <linux/module.h>
17 #include <linux/io.h>
18 #include <sound/core.h>
19 #include <sound/pcm.h>
20 #include <sound/asoundef.h>
21 #include <sound/info.h>
22 #include <sound/vx_core.h>
23 #include "vx_cmd.h"
24
25 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
26 MODULE_DESCRIPTION("Common routines for Digigram VX drivers");
27 MODULE_LICENSE("GPL");
28
29
30 /*
31 * vx_check_reg_bit - wait for the specified bit is set/reset on a register
32 * @reg: register to check
33 * @mask: bit mask
34 * @bit: resultant bit to be checked
35 * @time: time-out of loop in msec
36 *
37 * returns zero if a bit matches, or a negative error code.
38 */
snd_vx_check_reg_bit(struct vx_core * chip,int reg,int mask,int bit,int time)39 int snd_vx_check_reg_bit(struct vx_core *chip, int reg, int mask, int bit, int time)
40 {
41 unsigned long end_time = jiffies + (time * HZ + 999) / 1000;
42 static const char * const reg_names[VX_REG_MAX] = {
43 "ICR", "CVR", "ISR", "IVR", "RXH", "RXM", "RXL",
44 "DMA", "CDSP", "RFREQ", "RUER/V2", "DATA", "MEMIRQ",
45 "ACQ", "BIT0", "BIT1", "MIC0", "MIC1", "MIC2",
46 "MIC3", "INTCSR", "CNTRL", "GPIOC",
47 "LOFREQ", "HIFREQ", "CSUER", "RUER"
48 };
49
50 do {
51 if ((snd_vx_inb(chip, reg) & mask) == bit)
52 return 0;
53 //msleep(10);
54 } while (time_after_eq(end_time, jiffies));
55 dev_dbg(chip->card->dev,
56 "vx_check_reg_bit: timeout, reg=%s, mask=0x%x, val=0x%x\n",
57 reg_names[reg], mask, snd_vx_inb(chip, reg));
58 return -EIO;
59 }
60
61 EXPORT_SYMBOL(snd_vx_check_reg_bit);
62
63 /*
64 * vx_send_irq_dsp - set command irq bit
65 * @num: the requested IRQ type, IRQ_XXX
66 *
67 * this triggers the specified IRQ request
68 * returns 0 if successful, or a negative error code.
69 *
70 */
vx_send_irq_dsp(struct vx_core * chip,int num)71 static int vx_send_irq_dsp(struct vx_core *chip, int num)
72 {
73 int nirq;
74
75 /* wait for Hc = 0 */
76 if (snd_vx_check_reg_bit(chip, VX_CVR, CVR_HC, 0, 200) < 0)
77 return -EIO;
78
79 nirq = num;
80 if (vx_has_new_dsp(chip))
81 nirq += VXP_IRQ_OFFSET;
82 vx_outb(chip, CVR, (nirq >> 1) | CVR_HC);
83 return 0;
84 }
85
86
87 /*
88 * vx_reset_chk - reset CHK bit on ISR
89 *
90 * returns 0 if successful, or a negative error code.
91 */
vx_reset_chk(struct vx_core * chip)92 static int vx_reset_chk(struct vx_core *chip)
93 {
94 /* Reset irq CHK */
95 if (vx_send_irq_dsp(chip, IRQ_RESET_CHK) < 0)
96 return -EIO;
97 /* Wait until CHK = 0 */
98 if (vx_check_isr(chip, ISR_CHK, 0, 200) < 0)
99 return -EIO;
100 return 0;
101 }
102
103 /*
104 * vx_transfer_end - terminate message transfer
105 * @cmd: IRQ message to send (IRQ_MESS_XXX_END)
106 *
107 * returns 0 if successful, or a negative error code.
108 * the error code can be VX-specific, retrieved via vx_get_error().
109 * NB: call with mutex held!
110 */
vx_transfer_end(struct vx_core * chip,int cmd)111 static int vx_transfer_end(struct vx_core *chip, int cmd)
112 {
113 int err;
114
115 err = vx_reset_chk(chip);
116 if (err < 0)
117 return err;
118
119 /* irq MESS_READ/WRITE_END */
120 err = vx_send_irq_dsp(chip, cmd);
121 if (err < 0)
122 return err;
123
124 /* Wait CHK = 1 */
125 err = vx_wait_isr_bit(chip, ISR_CHK);
126 if (err < 0)
127 return err;
128
129 /* If error, Read RX */
130 err = vx_inb(chip, ISR);
131 if (err & ISR_ERR) {
132 err = vx_wait_for_rx_full(chip);
133 if (err < 0) {
134 dev_dbg(chip->card->dev,
135 "transfer_end: error in rx_full\n");
136 return err;
137 }
138 err = vx_inb(chip, RXH) << 16;
139 err |= vx_inb(chip, RXM) << 8;
140 err |= vx_inb(chip, RXL);
141 dev_dbg(chip->card->dev, "transfer_end: error = 0x%x\n", err);
142 return -(VX_ERR_MASK | err);
143 }
144 return 0;
145 }
146
147 /*
148 * vx_read_status - return the status rmh
149 * @rmh: rmh record to store the status
150 *
151 * returns 0 if successful, or a negative error code.
152 * the error code can be VX-specific, retrieved via vx_get_error().
153 * NB: call with mutex held!
154 */
vx_read_status(struct vx_core * chip,struct vx_rmh * rmh)155 static int vx_read_status(struct vx_core *chip, struct vx_rmh *rmh)
156 {
157 int i, err, val, size;
158
159 /* no read necessary? */
160 if (rmh->DspStat == RMH_SSIZE_FIXED && rmh->LgStat == 0)
161 return 0;
162
163 /* Wait for RX full (with timeout protection)
164 * The first word of status is in RX
165 */
166 err = vx_wait_for_rx_full(chip);
167 if (err < 0)
168 return err;
169
170 /* Read RX */
171 val = vx_inb(chip, RXH) << 16;
172 val |= vx_inb(chip, RXM) << 8;
173 val |= vx_inb(chip, RXL);
174
175 /* If status given by DSP, let's decode its size */
176 switch (rmh->DspStat) {
177 case RMH_SSIZE_ARG:
178 size = val & 0xff;
179 rmh->Stat[0] = val & 0xffff00;
180 rmh->LgStat = size + 1;
181 break;
182 case RMH_SSIZE_MASK:
183 /* Let's count the arg numbers from a mask */
184 rmh->Stat[0] = val;
185 size = 0;
186 while (val) {
187 if (val & 0x01)
188 size++;
189 val >>= 1;
190 }
191 rmh->LgStat = size + 1;
192 break;
193 default:
194 /* else retrieve the status length given by the driver */
195 size = rmh->LgStat;
196 rmh->Stat[0] = val; /* Val is the status 1st word */
197 size--; /* hence adjust remaining length */
198 break;
199 }
200
201 if (size < 1)
202 return 0;
203 if (snd_BUG_ON(size >= SIZE_MAX_STATUS))
204 return -EINVAL;
205
206 for (i = 1; i <= size; i++) {
207 /* trigger an irq MESS_WRITE_NEXT */
208 err = vx_send_irq_dsp(chip, IRQ_MESS_WRITE_NEXT);
209 if (err < 0)
210 return err;
211 /* Wait for RX full (with timeout protection) */
212 err = vx_wait_for_rx_full(chip);
213 if (err < 0)
214 return err;
215 rmh->Stat[i] = vx_inb(chip, RXH) << 16;
216 rmh->Stat[i] |= vx_inb(chip, RXM) << 8;
217 rmh->Stat[i] |= vx_inb(chip, RXL);
218 }
219
220 return vx_transfer_end(chip, IRQ_MESS_WRITE_END);
221 }
222
223
224 #define MASK_MORE_THAN_1_WORD_COMMAND 0x00008000
225 #define MASK_1_WORD_COMMAND 0x00ff7fff
226
227 /*
228 * vx_send_msg_nolock - send a DSP message and read back the status
229 * @rmh: the rmh record to send and receive
230 *
231 * returns 0 if successful, or a negative error code.
232 * the error code can be VX-specific, retrieved via vx_get_error().
233 *
234 * this function doesn't call mutex lock at all.
235 */
vx_send_msg_nolock(struct vx_core * chip,struct vx_rmh * rmh)236 int vx_send_msg_nolock(struct vx_core *chip, struct vx_rmh *rmh)
237 {
238 int i, err;
239
240 if (chip->chip_status & VX_STAT_IS_STALE)
241 return -EBUSY;
242
243 err = vx_reset_chk(chip);
244 if (err < 0) {
245 dev_dbg(chip->card->dev, "vx_send_msg: vx_reset_chk error\n");
246 return err;
247 }
248
249 /* Check bit M is set according to length of the command */
250 if (rmh->LgCmd > 1)
251 rmh->Cmd[0] |= MASK_MORE_THAN_1_WORD_COMMAND;
252 else
253 rmh->Cmd[0] &= MASK_1_WORD_COMMAND;
254
255 /* Wait for TX empty */
256 err = vx_wait_isr_bit(chip, ISR_TX_EMPTY);
257 if (err < 0) {
258 dev_dbg(chip->card->dev, "vx_send_msg: wait tx empty error\n");
259 return err;
260 }
261
262 /* Write Cmd[0] */
263 vx_outb(chip, TXH, (rmh->Cmd[0] >> 16) & 0xff);
264 vx_outb(chip, TXM, (rmh->Cmd[0] >> 8) & 0xff);
265 vx_outb(chip, TXL, rmh->Cmd[0] & 0xff);
266
267 /* Trigger irq MESSAGE */
268 err = vx_send_irq_dsp(chip, IRQ_MESSAGE);
269 if (err < 0) {
270 dev_dbg(chip->card->dev,
271 "vx_send_msg: send IRQ_MESSAGE error\n");
272 return err;
273 }
274
275 /* Wait for CHK = 1 */
276 err = vx_wait_isr_bit(chip, ISR_CHK);
277 if (err < 0)
278 return err;
279
280 /* If error, get error value from RX */
281 if (vx_inb(chip, ISR) & ISR_ERR) {
282 err = vx_wait_for_rx_full(chip);
283 if (err < 0) {
284 dev_dbg(chip->card->dev,
285 "vx_send_msg: rx_full read error\n");
286 return err;
287 }
288 err = vx_inb(chip, RXH) << 16;
289 err |= vx_inb(chip, RXM) << 8;
290 err |= vx_inb(chip, RXL);
291 dev_dbg(chip->card->dev,
292 "msg got error = 0x%x at cmd[0]\n", err);
293 err = -(VX_ERR_MASK | err);
294 return err;
295 }
296
297 /* Send the other words */
298 if (rmh->LgCmd > 1) {
299 for (i = 1; i < rmh->LgCmd; i++) {
300 /* Wait for TX ready */
301 err = vx_wait_isr_bit(chip, ISR_TX_READY);
302 if (err < 0) {
303 dev_dbg(chip->card->dev,
304 "vx_send_msg: tx_ready error\n");
305 return err;
306 }
307
308 /* Write Cmd[i] */
309 vx_outb(chip, TXH, (rmh->Cmd[i] >> 16) & 0xff);
310 vx_outb(chip, TXM, (rmh->Cmd[i] >> 8) & 0xff);
311 vx_outb(chip, TXL, rmh->Cmd[i] & 0xff);
312
313 /* Trigger irq MESS_READ_NEXT */
314 err = vx_send_irq_dsp(chip, IRQ_MESS_READ_NEXT);
315 if (err < 0) {
316 dev_dbg(chip->card->dev,
317 "vx_send_msg: IRQ_READ_NEXT error\n");
318 return err;
319 }
320 }
321 /* Wait for TX empty */
322 err = vx_wait_isr_bit(chip, ISR_TX_READY);
323 if (err < 0) {
324 dev_dbg(chip->card->dev,
325 "vx_send_msg: TX_READY error\n");
326 return err;
327 }
328 /* End of transfer */
329 err = vx_transfer_end(chip, IRQ_MESS_READ_END);
330 if (err < 0)
331 return err;
332 }
333
334 return vx_read_status(chip, rmh);
335 }
336
337
338 /*
339 * vx_send_msg - send a DSP message with mutex
340 * @rmh: the rmh record to send and receive
341 *
342 * returns 0 if successful, or a negative error code.
343 * see vx_send_msg_nolock().
344 */
vx_send_msg(struct vx_core * chip,struct vx_rmh * rmh)345 int vx_send_msg(struct vx_core *chip, struct vx_rmh *rmh)
346 {
347 guard(mutex)(&chip->lock);
348 return vx_send_msg_nolock(chip, rmh);
349 }
350
351
352 /*
353 * vx_send_rih_nolock - send an RIH to xilinx
354 * @cmd: the command to send
355 *
356 * returns 0 if successful, or a negative error code.
357 * the error code can be VX-specific, retrieved via vx_get_error().
358 *
359 * this function doesn't call mutex at all.
360 *
361 * unlike RMH, no command is sent to DSP.
362 */
vx_send_rih_nolock(struct vx_core * chip,int cmd)363 int vx_send_rih_nolock(struct vx_core *chip, int cmd)
364 {
365 int err;
366
367 if (chip->chip_status & VX_STAT_IS_STALE)
368 return -EBUSY;
369
370 err = vx_reset_chk(chip);
371 if (err < 0)
372 return err;
373 /* send the IRQ */
374 err = vx_send_irq_dsp(chip, cmd);
375 if (err < 0)
376 return err;
377 /* Wait CHK = 1 */
378 err = vx_wait_isr_bit(chip, ISR_CHK);
379 if (err < 0)
380 return err;
381 /* If error, read RX */
382 if (vx_inb(chip, ISR) & ISR_ERR) {
383 err = vx_wait_for_rx_full(chip);
384 if (err < 0)
385 return err;
386 err = vx_inb(chip, RXH) << 16;
387 err |= vx_inb(chip, RXM) << 8;
388 err |= vx_inb(chip, RXL);
389 return -(VX_ERR_MASK | err);
390 }
391 return 0;
392 }
393
394
395 /*
396 * vx_send_rih - send an RIH with mutex
397 * @cmd: the command to send
398 *
399 * see vx_send_rih_nolock().
400 */
vx_send_rih(struct vx_core * chip,int cmd)401 int vx_send_rih(struct vx_core *chip, int cmd)
402 {
403 guard(mutex)(&chip->lock);
404 return vx_send_rih_nolock(chip, cmd);
405 }
406
407 #define END_OF_RESET_WAIT_TIME 500 /* us */
408
409 /**
410 * snd_vx_load_boot_image - boot up the xilinx interface
411 * @chip: VX core instance
412 * @boot: the boot record to load
413 */
snd_vx_load_boot_image(struct vx_core * chip,const struct firmware * boot)414 int snd_vx_load_boot_image(struct vx_core *chip, const struct firmware *boot)
415 {
416 unsigned int i;
417 int no_fillup = vx_has_new_dsp(chip);
418
419 /* check the length of boot image */
420 if (boot->size <= 0)
421 return -EINVAL;
422 if (boot->size % 3)
423 return -EINVAL;
424 #if 0
425 {
426 /* more strict check */
427 unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2];
428 if (boot->size != (c + 2) * 3)
429 return -EINVAL;
430 }
431 #endif
432
433 /* reset dsp */
434 vx_reset_dsp(chip);
435
436 udelay(END_OF_RESET_WAIT_TIME); /* another wait? */
437
438 /* download boot strap */
439 for (i = 0; i < 0x600; i += 3) {
440 if (i >= boot->size) {
441 if (no_fillup)
442 break;
443 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
444 dev_err(chip->card->dev, "dsp boot failed at %d\n", i);
445 return -EIO;
446 }
447 vx_outb(chip, TXH, 0);
448 vx_outb(chip, TXM, 0);
449 vx_outb(chip, TXL, 0);
450 } else {
451 const unsigned char *image = boot->data + i;
452 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
453 dev_err(chip->card->dev, "dsp boot failed at %d\n", i);
454 return -EIO;
455 }
456 vx_outb(chip, TXH, image[0]);
457 vx_outb(chip, TXM, image[1]);
458 vx_outb(chip, TXL, image[2]);
459 }
460 }
461 return 0;
462 }
463
464 EXPORT_SYMBOL(snd_vx_load_boot_image);
465
466 /*
467 * vx_test_irq_src - query the source of interrupts
468 *
469 * called from irq handler only
470 */
vx_test_irq_src(struct vx_core * chip,unsigned int * ret)471 static int vx_test_irq_src(struct vx_core *chip, unsigned int *ret)
472 {
473 int err;
474
475 vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT);
476 guard(mutex)(&chip->lock);
477 err = vx_send_msg_nolock(chip, &chip->irq_rmh);
478 if (err < 0)
479 *ret = 0;
480 else
481 *ret = chip->irq_rmh.Stat[0];
482 return err;
483 }
484
485
486 /*
487 * snd_vx_threaded_irq_handler - threaded irq handler
488 */
snd_vx_threaded_irq_handler(int irq,void * dev)489 irqreturn_t snd_vx_threaded_irq_handler(int irq, void *dev)
490 {
491 struct vx_core *chip = dev;
492 unsigned int events;
493
494 if (chip->chip_status & VX_STAT_IS_STALE)
495 return IRQ_HANDLED;
496
497 if (vx_test_irq_src(chip, &events) < 0)
498 return IRQ_HANDLED;
499
500 /* We must prevent any application using this DSP
501 * and block any further request until the application
502 * either unregisters or reloads the DSP
503 */
504 if (events & FATAL_DSP_ERROR) {
505 dev_err(chip->card->dev, "vx_core: fatal DSP error!!\n");
506 return IRQ_HANDLED;
507 }
508
509 /* The start on time code conditions are filled (ie the time code
510 * received by the board is equal to one of those given to it).
511 */
512 if (events & TIME_CODE_EVENT_PENDING) {
513 ; /* so far, nothing to do yet */
514 }
515
516 /* The frequency has changed on the board (UER mode). */
517 if (events & FREQUENCY_CHANGE_EVENT_PENDING)
518 vx_change_frequency(chip);
519
520 /* update the pcm streams */
521 vx_pcm_update_intr(chip, events);
522 return IRQ_HANDLED;
523 }
524 EXPORT_SYMBOL(snd_vx_threaded_irq_handler);
525
526 /**
527 * snd_vx_irq_handler - interrupt handler
528 * @irq: irq number
529 * @dev: VX core instance
530 */
snd_vx_irq_handler(int irq,void * dev)531 irqreturn_t snd_vx_irq_handler(int irq, void *dev)
532 {
533 struct vx_core *chip = dev;
534
535 if (! (chip->chip_status & VX_STAT_CHIP_INIT) ||
536 (chip->chip_status & VX_STAT_IS_STALE))
537 return IRQ_NONE;
538 if (! vx_test_and_ack(chip))
539 return IRQ_WAKE_THREAD;
540 return IRQ_NONE;
541 }
542
543 EXPORT_SYMBOL(snd_vx_irq_handler);
544
545 /*
546 */
vx_reset_board(struct vx_core * chip,int cold_reset)547 static void vx_reset_board(struct vx_core *chip, int cold_reset)
548 {
549 if (snd_BUG_ON(!chip->ops->reset_board))
550 return;
551
552 /* current source, later sync'ed with target */
553 chip->audio_source = VX_AUDIO_SRC_LINE;
554 if (cold_reset) {
555 chip->audio_source_target = chip->audio_source;
556 chip->clock_source = INTERNAL_QUARTZ;
557 chip->clock_mode = VX_CLOCK_MODE_AUTO;
558 chip->freq = 48000;
559 chip->uer_detected = VX_UER_MODE_NOT_PRESENT;
560 chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF;
561 }
562
563 chip->ops->reset_board(chip, cold_reset);
564
565 vx_reset_codec(chip, cold_reset);
566
567 vx_set_internal_clock(chip, chip->freq);
568
569 /* Reset the DSP */
570 vx_reset_dsp(chip);
571
572 if (vx_is_pcmcia(chip)) {
573 /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */
574 vx_test_and_ack(chip);
575 vx_validate_irq(chip, 1);
576 }
577
578 /* init CBits */
579 vx_set_iec958_status(chip, chip->uer_bits);
580 }
581
582
583 /*
584 * proc interface
585 */
586
vx_proc_read(struct snd_info_entry * entry,struct snd_info_buffer * buffer)587 static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
588 {
589 struct vx_core *chip = entry->private_data;
590 static const char * const audio_src_vxp[] = { "Line", "Mic", "Digital" };
591 static const char * const audio_src_vx2[] = { "Analog", "Analog", "Digital" };
592 static const char * const clock_mode[] = { "Auto", "Internal", "External" };
593 static const char * const clock_src[] = { "Internal", "External" };
594 static const char * const uer_type[] = { "Consumer", "Professional", "Not Present" };
595
596 snd_iprintf(buffer, "%s\n", chip->card->longname);
597 snd_iprintf(buffer, "Xilinx Firmware: %s\n",
598 (chip->chip_status & VX_STAT_XILINX_LOADED) ? "Loaded" : "No");
599 snd_iprintf(buffer, "Device Initialized: %s\n",
600 (chip->chip_status & VX_STAT_DEVICE_INIT) ? "Yes" : "No");
601 snd_iprintf(buffer, "DSP audio info:");
602 if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME)
603 snd_iprintf(buffer, " realtime");
604 if (chip->audio_info & VX_AUDIO_INFO_OFFLINE)
605 snd_iprintf(buffer, " offline");
606 if (chip->audio_info & VX_AUDIO_INFO_MPEG1)
607 snd_iprintf(buffer, " mpeg1");
608 if (chip->audio_info & VX_AUDIO_INFO_MPEG2)
609 snd_iprintf(buffer, " mpeg2");
610 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8)
611 snd_iprintf(buffer, " linear8");
612 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16)
613 snd_iprintf(buffer, " linear16");
614 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24)
615 snd_iprintf(buffer, " linear24");
616 snd_iprintf(buffer, "\n");
617 snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ?
618 audio_src_vxp[chip->audio_source] :
619 audio_src_vx2[chip->audio_source]);
620 snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]);
621 snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]);
622 snd_iprintf(buffer, "Frequency: %d\n", chip->freq);
623 snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected);
624 snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]);
625 snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n",
626 chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size,
627 chip->ibl.granularity);
628 }
629
vx_proc_init(struct vx_core * chip)630 static void vx_proc_init(struct vx_core *chip)
631 {
632 snd_card_ro_proc_new(chip->card, "vx-status", chip, vx_proc_read);
633 }
634
635
636 /**
637 * snd_vx_dsp_boot - load the DSP boot
638 * @chip: VX core instance
639 * @boot: firmware data
640 */
snd_vx_dsp_boot(struct vx_core * chip,const struct firmware * boot)641 int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot)
642 {
643 int err;
644 int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT);
645
646 vx_reset_board(chip, cold_reset);
647 vx_validate_irq(chip, 0);
648
649 err = snd_vx_load_boot_image(chip, boot);
650 if (err < 0)
651 return err;
652 msleep(10);
653
654 return 0;
655 }
656
657 EXPORT_SYMBOL(snd_vx_dsp_boot);
658
659 /**
660 * snd_vx_dsp_load - load the DSP image
661 * @chip: VX core instance
662 * @dsp: firmware data
663 */
snd_vx_dsp_load(struct vx_core * chip,const struct firmware * dsp)664 int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp)
665 {
666 unsigned int i;
667 int err;
668 unsigned int csum = 0;
669 const unsigned char *image, *cptr;
670
671 if (dsp->size % 3)
672 return -EINVAL;
673
674 vx_toggle_dac_mute(chip, 1);
675
676 /* Transfert data buffer from PC to DSP */
677 for (i = 0; i < dsp->size; i += 3) {
678 image = dsp->data + i;
679 /* Wait DSP ready for a new read */
680 err = vx_wait_isr_bit(chip, ISR_TX_EMPTY);
681 if (err < 0) {
682 dev_err(chip->card->dev,
683 "dsp loading error at position %d\n", i);
684 return err;
685 }
686 cptr = image;
687 csum ^= *cptr;
688 csum = (csum >> 24) | (csum << 8);
689 vx_outb(chip, TXH, *cptr++);
690 csum ^= *cptr;
691 csum = (csum >> 24) | (csum << 8);
692 vx_outb(chip, TXM, *cptr++);
693 csum ^= *cptr;
694 csum = (csum >> 24) | (csum << 8);
695 vx_outb(chip, TXL, *cptr++);
696 }
697
698 msleep(200);
699
700 err = vx_wait_isr_bit(chip, ISR_CHK);
701 if (err < 0)
702 return err;
703
704 vx_toggle_dac_mute(chip, 0);
705
706 vx_test_and_ack(chip);
707 vx_validate_irq(chip, 1);
708
709 return 0;
710 }
711
712 EXPORT_SYMBOL(snd_vx_dsp_load);
713
714 #ifdef CONFIG_PM
715 /*
716 * suspend
717 */
snd_vx_suspend(struct vx_core * chip)718 int snd_vx_suspend(struct vx_core *chip)
719 {
720 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
721 chip->chip_status |= VX_STAT_IN_SUSPEND;
722
723 return 0;
724 }
725
726 EXPORT_SYMBOL(snd_vx_suspend);
727
728 /*
729 * resume
730 */
snd_vx_resume(struct vx_core * chip)731 int snd_vx_resume(struct vx_core *chip)
732 {
733 int i, err;
734
735 chip->chip_status &= ~VX_STAT_CHIP_INIT;
736
737 for (i = 0; i < 4; i++) {
738 if (! chip->firmware[i])
739 continue;
740 err = chip->ops->load_dsp(chip, i, chip->firmware[i]);
741 if (err < 0) {
742 dev_err(chip->card->dev,
743 "vx: firmware resume error at DSP %d\n", i);
744 return -EIO;
745 }
746 }
747
748 chip->chip_status |= VX_STAT_CHIP_INIT;
749 chip->chip_status &= ~VX_STAT_IN_SUSPEND;
750
751 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
752 return 0;
753 }
754
755 EXPORT_SYMBOL(snd_vx_resume);
756 #endif
757
snd_vx_release(struct device * dev,void * data)758 static void snd_vx_release(struct device *dev, void *data)
759 {
760 snd_vx_free_firmware(data);
761 }
762
763 /**
764 * snd_vx_create - constructor for struct vx_core
765 * @card: card instance
766 * @hw: hardware specific record
767 * @ops: VX ops pointer
768 * @extra_size: extra byte size to allocate appending to chip
769 *
770 * this function allocates the instance and prepare for the hardware
771 * initialization.
772 *
773 * The object is managed via devres, and will be automatically released.
774 *
775 * return the instance pointer if successful, NULL in error.
776 */
snd_vx_create(struct snd_card * card,const struct snd_vx_hardware * hw,const struct snd_vx_ops * ops,int extra_size)777 struct vx_core *snd_vx_create(struct snd_card *card,
778 const struct snd_vx_hardware *hw,
779 const struct snd_vx_ops *ops,
780 int extra_size)
781 {
782 struct vx_core *chip;
783
784 if (snd_BUG_ON(!card || !hw || !ops))
785 return NULL;
786
787 chip = devres_alloc(snd_vx_release, sizeof(*chip) + extra_size,
788 GFP_KERNEL);
789 if (!chip)
790 return NULL;
791 mutex_init(&chip->lock);
792 chip->irq = -1;
793 chip->hw = hw;
794 chip->type = hw->type;
795 chip->ops = ops;
796 mutex_init(&chip->mixer_mutex);
797
798 chip->card = card;
799 card->private_data = chip;
800 strscpy(card->driver, hw->name);
801 sprintf(card->shortname, "Digigram %s", hw->name);
802
803 vx_proc_init(chip);
804
805 return chip;
806 }
807
808 EXPORT_SYMBOL(snd_vx_create);
809