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 snd_printd(KERN_DEBUG "vx_check_reg_bit: timeout, reg=%s, mask=0x%x, val=0x%x\n", reg_names[reg], mask, snd_vx_inb(chip, reg));
56 return -EIO;
57 }
58
59 EXPORT_SYMBOL(snd_vx_check_reg_bit);
60
61 /*
62 * vx_send_irq_dsp - set command irq bit
63 * @num: the requested IRQ type, IRQ_XXX
64 *
65 * this triggers the specified IRQ request
66 * returns 0 if successful, or a negative error code.
67 *
68 */
vx_send_irq_dsp(struct vx_core * chip,int num)69 static int vx_send_irq_dsp(struct vx_core *chip, int num)
70 {
71 int nirq;
72
73 /* wait for Hc = 0 */
74 if (snd_vx_check_reg_bit(chip, VX_CVR, CVR_HC, 0, 200) < 0)
75 return -EIO;
76
77 nirq = num;
78 if (vx_has_new_dsp(chip))
79 nirq += VXP_IRQ_OFFSET;
80 vx_outb(chip, CVR, (nirq >> 1) | CVR_HC);
81 return 0;
82 }
83
84
85 /*
86 * vx_reset_chk - reset CHK bit on ISR
87 *
88 * returns 0 if successful, or a negative error code.
89 */
vx_reset_chk(struct vx_core * chip)90 static int vx_reset_chk(struct vx_core *chip)
91 {
92 /* Reset irq CHK */
93 if (vx_send_irq_dsp(chip, IRQ_RESET_CHK) < 0)
94 return -EIO;
95 /* Wait until CHK = 0 */
96 if (vx_check_isr(chip, ISR_CHK, 0, 200) < 0)
97 return -EIO;
98 return 0;
99 }
100
101 /*
102 * vx_transfer_end - terminate message transfer
103 * @cmd: IRQ message to send (IRQ_MESS_XXX_END)
104 *
105 * returns 0 if successful, or a negative error code.
106 * the error code can be VX-specific, retrieved via vx_get_error().
107 * NB: call with mutex held!
108 */
vx_transfer_end(struct vx_core * chip,int cmd)109 static int vx_transfer_end(struct vx_core *chip, int cmd)
110 {
111 int err;
112
113 err = vx_reset_chk(chip);
114 if (err < 0)
115 return err;
116
117 /* irq MESS_READ/WRITE_END */
118 err = vx_send_irq_dsp(chip, cmd);
119 if (err < 0)
120 return err;
121
122 /* Wait CHK = 1 */
123 err = vx_wait_isr_bit(chip, ISR_CHK);
124 if (err < 0)
125 return err;
126
127 /* If error, Read RX */
128 err = vx_inb(chip, ISR);
129 if (err & ISR_ERR) {
130 err = vx_wait_for_rx_full(chip);
131 if (err < 0) {
132 snd_printd(KERN_DEBUG "transfer_end: error in rx_full\n");
133 return err;
134 }
135 err = vx_inb(chip, RXH) << 16;
136 err |= vx_inb(chip, RXM) << 8;
137 err |= vx_inb(chip, RXL);
138 snd_printd(KERN_DEBUG "transfer_end: error = 0x%x\n", err);
139 return -(VX_ERR_MASK | err);
140 }
141 return 0;
142 }
143
144 /*
145 * vx_read_status - return the status rmh
146 * @rmh: rmh record to store the status
147 *
148 * returns 0 if successful, or a negative error code.
149 * the error code can be VX-specific, retrieved via vx_get_error().
150 * NB: call with mutex held!
151 */
vx_read_status(struct vx_core * chip,struct vx_rmh * rmh)152 static int vx_read_status(struct vx_core *chip, struct vx_rmh *rmh)
153 {
154 int i, err, val, size;
155
156 /* no read necessary? */
157 if (rmh->DspStat == RMH_SSIZE_FIXED && rmh->LgStat == 0)
158 return 0;
159
160 /* Wait for RX full (with timeout protection)
161 * The first word of status is in RX
162 */
163 err = vx_wait_for_rx_full(chip);
164 if (err < 0)
165 return err;
166
167 /* Read RX */
168 val = vx_inb(chip, RXH) << 16;
169 val |= vx_inb(chip, RXM) << 8;
170 val |= vx_inb(chip, RXL);
171
172 /* If status given by DSP, let's decode its size */
173 switch (rmh->DspStat) {
174 case RMH_SSIZE_ARG:
175 size = val & 0xff;
176 rmh->Stat[0] = val & 0xffff00;
177 rmh->LgStat = size + 1;
178 break;
179 case RMH_SSIZE_MASK:
180 /* Let's count the arg numbers from a mask */
181 rmh->Stat[0] = val;
182 size = 0;
183 while (val) {
184 if (val & 0x01)
185 size++;
186 val >>= 1;
187 }
188 rmh->LgStat = size + 1;
189 break;
190 default:
191 /* else retrieve the status length given by the driver */
192 size = rmh->LgStat;
193 rmh->Stat[0] = val; /* Val is the status 1st word */
194 size--; /* hence adjust remaining length */
195 break;
196 }
197
198 if (size < 1)
199 return 0;
200 if (snd_BUG_ON(size >= SIZE_MAX_STATUS))
201 return -EINVAL;
202
203 for (i = 1; i <= size; i++) {
204 /* trigger an irq MESS_WRITE_NEXT */
205 err = vx_send_irq_dsp(chip, IRQ_MESS_WRITE_NEXT);
206 if (err < 0)
207 return err;
208 /* Wait for RX full (with timeout protection) */
209 err = vx_wait_for_rx_full(chip);
210 if (err < 0)
211 return err;
212 rmh->Stat[i] = vx_inb(chip, RXH) << 16;
213 rmh->Stat[i] |= vx_inb(chip, RXM) << 8;
214 rmh->Stat[i] |= vx_inb(chip, RXL);
215 }
216
217 return vx_transfer_end(chip, IRQ_MESS_WRITE_END);
218 }
219
220
221 #define MASK_MORE_THAN_1_WORD_COMMAND 0x00008000
222 #define MASK_1_WORD_COMMAND 0x00ff7fff
223
224 /*
225 * vx_send_msg_nolock - send a DSP message and read back the status
226 * @rmh: the rmh record to send and receive
227 *
228 * returns 0 if successful, or a negative error code.
229 * the error code can be VX-specific, retrieved via vx_get_error().
230 *
231 * this function doesn't call mutex lock at all.
232 */
vx_send_msg_nolock(struct vx_core * chip,struct vx_rmh * rmh)233 int vx_send_msg_nolock(struct vx_core *chip, struct vx_rmh *rmh)
234 {
235 int i, err;
236
237 if (chip->chip_status & VX_STAT_IS_STALE)
238 return -EBUSY;
239
240 err = vx_reset_chk(chip);
241 if (err < 0) {
242 snd_printd(KERN_DEBUG "vx_send_msg: vx_reset_chk error\n");
243 return err;
244 }
245
246 #if 0
247 printk(KERN_DEBUG "rmh: cmd = 0x%06x, length = %d, stype = %d\n",
248 rmh->Cmd[0], rmh->LgCmd, rmh->DspStat);
249 if (rmh->LgCmd > 1) {
250 printk(KERN_DEBUG " ");
251 for (i = 1; i < rmh->LgCmd; i++)
252 printk(KERN_CONT "0x%06x ", rmh->Cmd[i]);
253 printk(KERN_CONT "\n");
254 }
255 #endif
256 /* Check bit M is set according to length of the command */
257 if (rmh->LgCmd > 1)
258 rmh->Cmd[0] |= MASK_MORE_THAN_1_WORD_COMMAND;
259 else
260 rmh->Cmd[0] &= MASK_1_WORD_COMMAND;
261
262 /* Wait for TX empty */
263 err = vx_wait_isr_bit(chip, ISR_TX_EMPTY);
264 if (err < 0) {
265 snd_printd(KERN_DEBUG "vx_send_msg: wait tx empty error\n");
266 return err;
267 }
268
269 /* Write Cmd[0] */
270 vx_outb(chip, TXH, (rmh->Cmd[0] >> 16) & 0xff);
271 vx_outb(chip, TXM, (rmh->Cmd[0] >> 8) & 0xff);
272 vx_outb(chip, TXL, rmh->Cmd[0] & 0xff);
273
274 /* Trigger irq MESSAGE */
275 err = vx_send_irq_dsp(chip, IRQ_MESSAGE);
276 if (err < 0) {
277 snd_printd(KERN_DEBUG "vx_send_msg: send IRQ_MESSAGE error\n");
278 return err;
279 }
280
281 /* Wait for CHK = 1 */
282 err = vx_wait_isr_bit(chip, ISR_CHK);
283 if (err < 0)
284 return err;
285
286 /* If error, get error value from RX */
287 if (vx_inb(chip, ISR) & ISR_ERR) {
288 err = vx_wait_for_rx_full(chip);
289 if (err < 0) {
290 snd_printd(KERN_DEBUG "vx_send_msg: rx_full read error\n");
291 return err;
292 }
293 err = vx_inb(chip, RXH) << 16;
294 err |= vx_inb(chip, RXM) << 8;
295 err |= vx_inb(chip, RXL);
296 snd_printd(KERN_DEBUG "msg got error = 0x%x at cmd[0]\n", err);
297 err = -(VX_ERR_MASK | err);
298 return err;
299 }
300
301 /* Send the other words */
302 if (rmh->LgCmd > 1) {
303 for (i = 1; i < rmh->LgCmd; i++) {
304 /* Wait for TX ready */
305 err = vx_wait_isr_bit(chip, ISR_TX_READY);
306 if (err < 0) {
307 snd_printd(KERN_DEBUG "vx_send_msg: tx_ready error\n");
308 return err;
309 }
310
311 /* Write Cmd[i] */
312 vx_outb(chip, TXH, (rmh->Cmd[i] >> 16) & 0xff);
313 vx_outb(chip, TXM, (rmh->Cmd[i] >> 8) & 0xff);
314 vx_outb(chip, TXL, rmh->Cmd[i] & 0xff);
315
316 /* Trigger irq MESS_READ_NEXT */
317 err = vx_send_irq_dsp(chip, IRQ_MESS_READ_NEXT);
318 if (err < 0) {
319 snd_printd(KERN_DEBUG "vx_send_msg: IRQ_READ_NEXT error\n");
320 return err;
321 }
322 }
323 /* Wait for TX empty */
324 err = vx_wait_isr_bit(chip, ISR_TX_READY);
325 if (err < 0) {
326 snd_printd(KERN_DEBUG "vx_send_msg: TX_READY error\n");
327 return err;
328 }
329 /* End of transfer */
330 err = vx_transfer_end(chip, IRQ_MESS_READ_END);
331 if (err < 0)
332 return err;
333 }
334
335 return vx_read_status(chip, rmh);
336 }
337
338
339 /*
340 * vx_send_msg - send a DSP message with mutex
341 * @rmh: the rmh record to send and receive
342 *
343 * returns 0 if successful, or a negative error code.
344 * see vx_send_msg_nolock().
345 */
vx_send_msg(struct vx_core * chip,struct vx_rmh * rmh)346 int vx_send_msg(struct vx_core *chip, struct vx_rmh *rmh)
347 {
348 int err;
349
350 mutex_lock(&chip->lock);
351 err = vx_send_msg_nolock(chip, rmh);
352 mutex_unlock(&chip->lock);
353 return err;
354 }
355
356
357 /*
358 * vx_send_rih_nolock - send an RIH to xilinx
359 * @cmd: the command to send
360 *
361 * returns 0 if successful, or a negative error code.
362 * the error code can be VX-specific, retrieved via vx_get_error().
363 *
364 * this function doesn't call mutex at all.
365 *
366 * unlike RMH, no command is sent to DSP.
367 */
vx_send_rih_nolock(struct vx_core * chip,int cmd)368 int vx_send_rih_nolock(struct vx_core *chip, int cmd)
369 {
370 int err;
371
372 if (chip->chip_status & VX_STAT_IS_STALE)
373 return -EBUSY;
374
375 #if 0
376 printk(KERN_DEBUG "send_rih: cmd = 0x%x\n", cmd);
377 #endif
378 err = vx_reset_chk(chip);
379 if (err < 0)
380 return err;
381 /* send the IRQ */
382 err = vx_send_irq_dsp(chip, cmd);
383 if (err < 0)
384 return err;
385 /* Wait CHK = 1 */
386 err = vx_wait_isr_bit(chip, ISR_CHK);
387 if (err < 0)
388 return err;
389 /* If error, read RX */
390 if (vx_inb(chip, ISR) & ISR_ERR) {
391 err = vx_wait_for_rx_full(chip);
392 if (err < 0)
393 return err;
394 err = vx_inb(chip, RXH) << 16;
395 err |= vx_inb(chip, RXM) << 8;
396 err |= vx_inb(chip, RXL);
397 return -(VX_ERR_MASK | err);
398 }
399 return 0;
400 }
401
402
403 /*
404 * vx_send_rih - send an RIH with mutex
405 * @cmd: the command to send
406 *
407 * see vx_send_rih_nolock().
408 */
vx_send_rih(struct vx_core * chip,int cmd)409 int vx_send_rih(struct vx_core *chip, int cmd)
410 {
411 int err;
412
413 mutex_lock(&chip->lock);
414 err = vx_send_rih_nolock(chip, cmd);
415 mutex_unlock(&chip->lock);
416 return err;
417 }
418
419 #define END_OF_RESET_WAIT_TIME 500 /* us */
420
421 /**
422 * snd_vx_load_boot_image - boot up the xilinx interface
423 * @chip: VX core instance
424 * @boot: the boot record to load
425 */
snd_vx_load_boot_image(struct vx_core * chip,const struct firmware * boot)426 int snd_vx_load_boot_image(struct vx_core *chip, const struct firmware *boot)
427 {
428 unsigned int i;
429 int no_fillup = vx_has_new_dsp(chip);
430
431 /* check the length of boot image */
432 if (boot->size <= 0)
433 return -EINVAL;
434 if (boot->size % 3)
435 return -EINVAL;
436 #if 0
437 {
438 /* more strict check */
439 unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2];
440 if (boot->size != (c + 2) * 3)
441 return -EINVAL;
442 }
443 #endif
444
445 /* reset dsp */
446 vx_reset_dsp(chip);
447
448 udelay(END_OF_RESET_WAIT_TIME); /* another wait? */
449
450 /* download boot strap */
451 for (i = 0; i < 0x600; i += 3) {
452 if (i >= boot->size) {
453 if (no_fillup)
454 break;
455 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
456 snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
457 return -EIO;
458 }
459 vx_outb(chip, TXH, 0);
460 vx_outb(chip, TXM, 0);
461 vx_outb(chip, TXL, 0);
462 } else {
463 const unsigned char *image = boot->data + i;
464 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
465 snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
466 return -EIO;
467 }
468 vx_outb(chip, TXH, image[0]);
469 vx_outb(chip, TXM, image[1]);
470 vx_outb(chip, TXL, image[2]);
471 }
472 }
473 return 0;
474 }
475
476 EXPORT_SYMBOL(snd_vx_load_boot_image);
477
478 /*
479 * vx_test_irq_src - query the source of interrupts
480 *
481 * called from irq handler only
482 */
vx_test_irq_src(struct vx_core * chip,unsigned int * ret)483 static int vx_test_irq_src(struct vx_core *chip, unsigned int *ret)
484 {
485 int err;
486
487 vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT);
488 mutex_lock(&chip->lock);
489 err = vx_send_msg_nolock(chip, &chip->irq_rmh);
490 if (err < 0)
491 *ret = 0;
492 else
493 *ret = chip->irq_rmh.Stat[0];
494 mutex_unlock(&chip->lock);
495 return err;
496 }
497
498
499 /*
500 * snd_vx_threaded_irq_handler - threaded irq handler
501 */
snd_vx_threaded_irq_handler(int irq,void * dev)502 irqreturn_t snd_vx_threaded_irq_handler(int irq, void *dev)
503 {
504 struct vx_core *chip = dev;
505 unsigned int events;
506
507 if (chip->chip_status & VX_STAT_IS_STALE)
508 return IRQ_HANDLED;
509
510 if (vx_test_irq_src(chip, &events) < 0)
511 return IRQ_HANDLED;
512
513 #if 0
514 if (events & 0x000800)
515 printk(KERN_ERR "DSP Stream underrun ! IRQ events = 0x%x\n", events);
516 #endif
517 // printk(KERN_DEBUG "IRQ events = 0x%x\n", events);
518
519 /* We must prevent any application using this DSP
520 * and block any further request until the application
521 * either unregisters or reloads the DSP
522 */
523 if (events & FATAL_DSP_ERROR) {
524 snd_printk(KERN_ERR "vx_core: fatal DSP error!!\n");
525 return IRQ_HANDLED;
526 }
527
528 /* The start on time code conditions are filled (ie the time code
529 * received by the board is equal to one of those given to it).
530 */
531 if (events & TIME_CODE_EVENT_PENDING) {
532 ; /* so far, nothing to do yet */
533 }
534
535 /* The frequency has changed on the board (UER mode). */
536 if (events & FREQUENCY_CHANGE_EVENT_PENDING)
537 vx_change_frequency(chip);
538
539 /* update the pcm streams */
540 vx_pcm_update_intr(chip, events);
541 return IRQ_HANDLED;
542 }
543 EXPORT_SYMBOL(snd_vx_threaded_irq_handler);
544
545 /**
546 * snd_vx_irq_handler - interrupt handler
547 * @irq: irq number
548 * @dev: VX core instance
549 */
snd_vx_irq_handler(int irq,void * dev)550 irqreturn_t snd_vx_irq_handler(int irq, void *dev)
551 {
552 struct vx_core *chip = dev;
553
554 if (! (chip->chip_status & VX_STAT_CHIP_INIT) ||
555 (chip->chip_status & VX_STAT_IS_STALE))
556 return IRQ_NONE;
557 if (! vx_test_and_ack(chip))
558 return IRQ_WAKE_THREAD;
559 return IRQ_NONE;
560 }
561
562 EXPORT_SYMBOL(snd_vx_irq_handler);
563
564 /*
565 */
vx_reset_board(struct vx_core * chip,int cold_reset)566 static void vx_reset_board(struct vx_core *chip, int cold_reset)
567 {
568 if (snd_BUG_ON(!chip->ops->reset_board))
569 return;
570
571 /* current source, later sync'ed with target */
572 chip->audio_source = VX_AUDIO_SRC_LINE;
573 if (cold_reset) {
574 chip->audio_source_target = chip->audio_source;
575 chip->clock_source = INTERNAL_QUARTZ;
576 chip->clock_mode = VX_CLOCK_MODE_AUTO;
577 chip->freq = 48000;
578 chip->uer_detected = VX_UER_MODE_NOT_PRESENT;
579 chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF;
580 }
581
582 chip->ops->reset_board(chip, cold_reset);
583
584 vx_reset_codec(chip, cold_reset);
585
586 vx_set_internal_clock(chip, chip->freq);
587
588 /* Reset the DSP */
589 vx_reset_dsp(chip);
590
591 if (vx_is_pcmcia(chip)) {
592 /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */
593 vx_test_and_ack(chip);
594 vx_validate_irq(chip, 1);
595 }
596
597 /* init CBits */
598 vx_set_iec958_status(chip, chip->uer_bits);
599 }
600
601
602 /*
603 * proc interface
604 */
605
vx_proc_read(struct snd_info_entry * entry,struct snd_info_buffer * buffer)606 static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
607 {
608 struct vx_core *chip = entry->private_data;
609 static const char * const audio_src_vxp[] = { "Line", "Mic", "Digital" };
610 static const char * const audio_src_vx2[] = { "Analog", "Analog", "Digital" };
611 static const char * const clock_mode[] = { "Auto", "Internal", "External" };
612 static const char * const clock_src[] = { "Internal", "External" };
613 static const char * const uer_type[] = { "Consumer", "Professional", "Not Present" };
614
615 snd_iprintf(buffer, "%s\n", chip->card->longname);
616 snd_iprintf(buffer, "Xilinx Firmware: %s\n",
617 (chip->chip_status & VX_STAT_XILINX_LOADED) ? "Loaded" : "No");
618 snd_iprintf(buffer, "Device Initialized: %s\n",
619 (chip->chip_status & VX_STAT_DEVICE_INIT) ? "Yes" : "No");
620 snd_iprintf(buffer, "DSP audio info:");
621 if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME)
622 snd_iprintf(buffer, " realtime");
623 if (chip->audio_info & VX_AUDIO_INFO_OFFLINE)
624 snd_iprintf(buffer, " offline");
625 if (chip->audio_info & VX_AUDIO_INFO_MPEG1)
626 snd_iprintf(buffer, " mpeg1");
627 if (chip->audio_info & VX_AUDIO_INFO_MPEG2)
628 snd_iprintf(buffer, " mpeg2");
629 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8)
630 snd_iprintf(buffer, " linear8");
631 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16)
632 snd_iprintf(buffer, " linear16");
633 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24)
634 snd_iprintf(buffer, " linear24");
635 snd_iprintf(buffer, "\n");
636 snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ?
637 audio_src_vxp[chip->audio_source] :
638 audio_src_vx2[chip->audio_source]);
639 snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]);
640 snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]);
641 snd_iprintf(buffer, "Frequency: %d\n", chip->freq);
642 snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected);
643 snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]);
644 snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n",
645 chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size,
646 chip->ibl.granularity);
647 }
648
vx_proc_init(struct vx_core * chip)649 static void vx_proc_init(struct vx_core *chip)
650 {
651 snd_card_ro_proc_new(chip->card, "vx-status", chip, vx_proc_read);
652 }
653
654
655 /**
656 * snd_vx_dsp_boot - load the DSP boot
657 * @chip: VX core instance
658 * @boot: firmware data
659 */
snd_vx_dsp_boot(struct vx_core * chip,const struct firmware * boot)660 int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot)
661 {
662 int err;
663 int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT);
664
665 vx_reset_board(chip, cold_reset);
666 vx_validate_irq(chip, 0);
667
668 err = snd_vx_load_boot_image(chip, boot);
669 if (err < 0)
670 return err;
671 msleep(10);
672
673 return 0;
674 }
675
676 EXPORT_SYMBOL(snd_vx_dsp_boot);
677
678 /**
679 * snd_vx_dsp_load - load the DSP image
680 * @chip: VX core instance
681 * @dsp: firmware data
682 */
snd_vx_dsp_load(struct vx_core * chip,const struct firmware * dsp)683 int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp)
684 {
685 unsigned int i;
686 int err;
687 unsigned int csum = 0;
688 const unsigned char *image, *cptr;
689
690 if (dsp->size % 3)
691 return -EINVAL;
692
693 vx_toggle_dac_mute(chip, 1);
694
695 /* Transfert data buffer from PC to DSP */
696 for (i = 0; i < dsp->size; i += 3) {
697 image = dsp->data + i;
698 /* Wait DSP ready for a new read */
699 err = vx_wait_isr_bit(chip, ISR_TX_EMPTY);
700 if (err < 0) {
701 printk(KERN_ERR
702 "dsp loading error at position %d\n", i);
703 return err;
704 }
705 cptr = image;
706 csum ^= *cptr;
707 csum = (csum >> 24) | (csum << 8);
708 vx_outb(chip, TXH, *cptr++);
709 csum ^= *cptr;
710 csum = (csum >> 24) | (csum << 8);
711 vx_outb(chip, TXM, *cptr++);
712 csum ^= *cptr;
713 csum = (csum >> 24) | (csum << 8);
714 vx_outb(chip, TXL, *cptr++);
715 }
716 snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum);
717
718 msleep(200);
719
720 err = vx_wait_isr_bit(chip, ISR_CHK);
721 if (err < 0)
722 return err;
723
724 vx_toggle_dac_mute(chip, 0);
725
726 vx_test_and_ack(chip);
727 vx_validate_irq(chip, 1);
728
729 return 0;
730 }
731
732 EXPORT_SYMBOL(snd_vx_dsp_load);
733
734 #ifdef CONFIG_PM
735 /*
736 * suspend
737 */
snd_vx_suspend(struct vx_core * chip)738 int snd_vx_suspend(struct vx_core *chip)
739 {
740 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
741 chip->chip_status |= VX_STAT_IN_SUSPEND;
742
743 return 0;
744 }
745
746 EXPORT_SYMBOL(snd_vx_suspend);
747
748 /*
749 * resume
750 */
snd_vx_resume(struct vx_core * chip)751 int snd_vx_resume(struct vx_core *chip)
752 {
753 int i, err;
754
755 chip->chip_status &= ~VX_STAT_CHIP_INIT;
756
757 for (i = 0; i < 4; i++) {
758 if (! chip->firmware[i])
759 continue;
760 err = chip->ops->load_dsp(chip, i, chip->firmware[i]);
761 if (err < 0) {
762 snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i);
763 return -EIO;
764 }
765 }
766
767 chip->chip_status |= VX_STAT_CHIP_INIT;
768 chip->chip_status &= ~VX_STAT_IN_SUSPEND;
769
770 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
771 return 0;
772 }
773
774 EXPORT_SYMBOL(snd_vx_resume);
775 #endif
776
snd_vx_release(struct device * dev,void * data)777 static void snd_vx_release(struct device *dev, void *data)
778 {
779 snd_vx_free_firmware(data);
780 }
781
782 /**
783 * snd_vx_create - constructor for struct vx_core
784 * @card: card instance
785 * @hw: hardware specific record
786 * @ops: VX ops pointer
787 * @extra_size: extra byte size to allocate appending to chip
788 *
789 * this function allocates the instance and prepare for the hardware
790 * initialization.
791 *
792 * The object is managed via devres, and will be automatically released.
793 *
794 * return the instance pointer if successful, NULL in error.
795 */
snd_vx_create(struct snd_card * card,const struct snd_vx_hardware * hw,const struct snd_vx_ops * ops,int extra_size)796 struct vx_core *snd_vx_create(struct snd_card *card,
797 const struct snd_vx_hardware *hw,
798 const struct snd_vx_ops *ops,
799 int extra_size)
800 {
801 struct vx_core *chip;
802
803 if (snd_BUG_ON(!card || !hw || !ops))
804 return NULL;
805
806 chip = devres_alloc(snd_vx_release, sizeof(*chip) + extra_size,
807 GFP_KERNEL);
808 if (!chip)
809 return NULL;
810 mutex_init(&chip->lock);
811 chip->irq = -1;
812 chip->hw = hw;
813 chip->type = hw->type;
814 chip->ops = ops;
815 mutex_init(&chip->mixer_mutex);
816
817 chip->card = card;
818 card->private_data = chip;
819 strcpy(card->driver, hw->name);
820 sprintf(card->shortname, "Digigram %s", hw->name);
821
822 vx_proc_init(chip);
823
824 return chip;
825 }
826
827 EXPORT_SYMBOL(snd_vx_create);
828