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1/*
2 * Driver for Digigram VX soundcards
3 *
4 * Hardware core part
5 *
6 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23#include <linux/delay.h>
24#include <linux/slab.h>
25#include <linux/interrupt.h>
26#include <linux/init.h>
27#include <linux/device.h>
28#include <linux/firmware.h>
29#include <linux/module.h>
30#include <sound/core.h>
31#include <sound/pcm.h>
32#include <sound/asoundef.h>
33#include <sound/info.h>
34#include <asm/io.h>
35#include <sound/vx_core.h>
36#include "vx_cmd.h"
37
38MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
39MODULE_DESCRIPTION("Common routines for Digigram VX drivers");
40MODULE_LICENSE("GPL");
41
42
43/*
44 * vx_check_reg_bit - wait for the specified bit is set/reset on a register
45 * @reg: register to check
46 * @mask: bit mask
47 * @bit: resultant bit to be checked
48 * @time: time-out of loop in msec
49 *
50 * returns zero if a bit matches, or a negative error code.
51 */
52int snd_vx_check_reg_bit(struct vx_core *chip, int reg, int mask, int bit, int time)
53{
54 unsigned long end_time = jiffies + (time * HZ + 999) / 1000;
55 static char *reg_names[VX_REG_MAX] = {
56 "ICR", "CVR", "ISR", "IVR", "RXH", "RXM", "RXL",
57 "DMA", "CDSP", "RFREQ", "RUER/V2", "DATA", "MEMIRQ",
58 "ACQ", "BIT0", "BIT1", "MIC0", "MIC1", "MIC2",
59 "MIC3", "INTCSR", "CNTRL", "GPIOC",
60 "LOFREQ", "HIFREQ", "CSUER", "RUER"
61 };
62
63 do {
64 if ((snd_vx_inb(chip, reg) & mask) == bit)
65 return 0;
66 //msleep(10);
67 } while (time_after_eq(end_time, jiffies));
68 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));
69 return -EIO;
70}
71
72EXPORT_SYMBOL(snd_vx_check_reg_bit);
73
74/*
75 * vx_send_irq_dsp - set command irq bit
76 * @num: the requested IRQ type, IRQ_XXX
77 *
78 * this triggers the specified IRQ request
79 * returns 0 if successful, or a negative error code.
80 *
81 */
82static int vx_send_irq_dsp(struct vx_core *chip, int num)
83{
84 int nirq;
85
86 /* wait for Hc = 0 */
87 if (snd_vx_check_reg_bit(chip, VX_CVR, CVR_HC, 0, 200) < 0)
88 return -EIO;
89
90 nirq = num;
91 if (vx_has_new_dsp(chip))
92 nirq += VXP_IRQ_OFFSET;
93 vx_outb(chip, CVR, (nirq >> 1) | CVR_HC);
94 return 0;
95}
96
97
98/*
99 * vx_reset_chk - reset CHK bit on ISR
100 *
101 * returns 0 if successful, or a negative error code.
102 */
103static int vx_reset_chk(struct vx_core *chip)
104{
105 /* Reset irq CHK */
106 if (vx_send_irq_dsp(chip, IRQ_RESET_CHK) < 0)
107 return -EIO;
108 /* Wait until CHK = 0 */
109 if (vx_check_isr(chip, ISR_CHK, 0, 200) < 0)
110 return -EIO;
111 return 0;
112}
113
114/*
115 * vx_transfer_end - terminate message transfer
116 * @cmd: IRQ message to send (IRQ_MESS_XXX_END)
117 *
118 * returns 0 if successful, or a negative error code.
119 * the error code can be VX-specific, retrieved via vx_get_error().
120 * NB: call with spinlock held!
121 */
122static int vx_transfer_end(struct vx_core *chip, int cmd)
123{
124 int err;
125
126 if ((err = vx_reset_chk(chip)) < 0)
127 return err;
128
129 /* irq MESS_READ/WRITE_END */
130 if ((err = vx_send_irq_dsp(chip, cmd)) < 0)
131 return err;
132
133 /* Wait CHK = 1 */
134 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
135 return err;
136
137 /* If error, Read RX */
138 if ((err = vx_inb(chip, ISR)) & ISR_ERR) {
139 if ((err = vx_wait_for_rx_full(chip)) < 0) {
140 snd_printd(KERN_DEBUG "transfer_end: error in rx_full\n");
141 return err;
142 }
143 err = vx_inb(chip, RXH) << 16;
144 err |= vx_inb(chip, RXM) << 8;
145 err |= vx_inb(chip, RXL);
146 snd_printd(KERN_DEBUG "transfer_end: error = 0x%x\n", err);
147 return -(VX_ERR_MASK | err);
148 }
149 return 0;
150}
151
152/*
153 * vx_read_status - return the status rmh
154 * @rmh: rmh record to store the status
155 *
156 * returns 0 if successful, or a negative error code.
157 * the error code can be VX-specific, retrieved via vx_get_error().
158 * NB: call with spinlock held!
159 */
160static int vx_read_status(struct vx_core *chip, struct vx_rmh *rmh)
161{
162 int i, err, val, size;
163
164 /* no read necessary? */
165 if (rmh->DspStat == RMH_SSIZE_FIXED && rmh->LgStat == 0)
166 return 0;
167
168 /* Wait for RX full (with timeout protection)
169 * The first word of status is in RX
170 */
171 err = vx_wait_for_rx_full(chip);
172 if (err < 0)
173 return err;
174
175 /* Read RX */
176 val = vx_inb(chip, RXH) << 16;
177 val |= vx_inb(chip, RXM) << 8;
178 val |= vx_inb(chip, RXL);
179
180 /* If status given by DSP, let's decode its size */
181 switch (rmh->DspStat) {
182 case RMH_SSIZE_ARG:
183 size = val & 0xff;
184 rmh->Stat[0] = val & 0xffff00;
185 rmh->LgStat = size + 1;
186 break;
187 case RMH_SSIZE_MASK:
188 /* Let's count the arg numbers from a mask */
189 rmh->Stat[0] = val;
190 size = 0;
191 while (val) {
192 if (val & 0x01)
193 size++;
194 val >>= 1;
195 }
196 rmh->LgStat = size + 1;
197 break;
198 default:
199 /* else retrieve the status length given by the driver */
200 size = rmh->LgStat;
201 rmh->Stat[0] = val; /* Val is the status 1st word */
202 size--; /* hence adjust remaining length */
203 break;
204 }
205
206 if (size < 1)
207 return 0;
208 if (snd_BUG_ON(size >= SIZE_MAX_STATUS))
209 return -EINVAL;
210
211 for (i = 1; i <= size; i++) {
212 /* trigger an irq MESS_WRITE_NEXT */
213 err = vx_send_irq_dsp(chip, IRQ_MESS_WRITE_NEXT);
214 if (err < 0)
215 return err;
216 /* Wait for RX full (with timeout protection) */
217 err = vx_wait_for_rx_full(chip);
218 if (err < 0)
219 return err;
220 rmh->Stat[i] = vx_inb(chip, RXH) << 16;
221 rmh->Stat[i] |= vx_inb(chip, RXM) << 8;
222 rmh->Stat[i] |= vx_inb(chip, RXL);
223 }
224
225 return vx_transfer_end(chip, IRQ_MESS_WRITE_END);
226}
227
228
229#define MASK_MORE_THAN_1_WORD_COMMAND 0x00008000
230#define MASK_1_WORD_COMMAND 0x00ff7fff
231
232/*
233 * vx_send_msg_nolock - send a DSP message and read back the status
234 * @rmh: the rmh record to send and receive
235 *
236 * returns 0 if successful, or a negative error code.
237 * the error code can be VX-specific, retrieved via vx_get_error().
238 *
239 * this function doesn't call spinlock at all.
240 */
241int vx_send_msg_nolock(struct vx_core *chip, struct vx_rmh *rmh)
242{
243 int i, err;
244
245 if (chip->chip_status & VX_STAT_IS_STALE)
246 return -EBUSY;
247
248 if ((err = vx_reset_chk(chip)) < 0) {
249 snd_printd(KERN_DEBUG "vx_send_msg: vx_reset_chk error\n");
250 return err;
251 }
252
253#if 0
254 printk(KERN_DEBUG "rmh: cmd = 0x%06x, length = %d, stype = %d\n",
255 rmh->Cmd[0], rmh->LgCmd, rmh->DspStat);
256 if (rmh->LgCmd > 1) {
257 printk(KERN_DEBUG " ");
258 for (i = 1; i < rmh->LgCmd; i++)
259 printk("0x%06x ", rmh->Cmd[i]);
260 printk("\n");
261 }
262#endif
263 /* Check bit M is set according to length of the command */
264 if (rmh->LgCmd > 1)
265 rmh->Cmd[0] |= MASK_MORE_THAN_1_WORD_COMMAND;
266 else
267 rmh->Cmd[0] &= MASK_1_WORD_COMMAND;
268
269 /* Wait for TX empty */
270 if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) {
271 snd_printd(KERN_DEBUG "vx_send_msg: wait tx empty error\n");
272 return err;
273 }
274
275 /* Write Cmd[0] */
276 vx_outb(chip, TXH, (rmh->Cmd[0] >> 16) & 0xff);
277 vx_outb(chip, TXM, (rmh->Cmd[0] >> 8) & 0xff);
278 vx_outb(chip, TXL, rmh->Cmd[0] & 0xff);
279
280 /* Trigger irq MESSAGE */
281 if ((err = vx_send_irq_dsp(chip, IRQ_MESSAGE)) < 0) {
282 snd_printd(KERN_DEBUG "vx_send_msg: send IRQ_MESSAGE error\n");
283 return err;
284 }
285
286 /* Wait for CHK = 1 */
287 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
288 return err;
289
290 /* If error, get error value from RX */
291 if (vx_inb(chip, ISR) & ISR_ERR) {
292 if ((err = vx_wait_for_rx_full(chip)) < 0) {
293 snd_printd(KERN_DEBUG "vx_send_msg: rx_full read error\n");
294 return err;
295 }
296 err = vx_inb(chip, RXH) << 16;
297 err |= vx_inb(chip, RXM) << 8;
298 err |= vx_inb(chip, RXL);
299 snd_printd(KERN_DEBUG "msg got error = 0x%x at cmd[0]\n", err);
300 err = -(VX_ERR_MASK | err);
301 return err;
302 }
303
304 /* Send the other words */
305 if (rmh->LgCmd > 1) {
306 for (i = 1; i < rmh->LgCmd; i++) {
307 /* Wait for TX ready */
308 if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) {
309 snd_printd(KERN_DEBUG "vx_send_msg: tx_ready error\n");
310 return err;
311 }
312
313 /* Write Cmd[i] */
314 vx_outb(chip, TXH, (rmh->Cmd[i] >> 16) & 0xff);
315 vx_outb(chip, TXM, (rmh->Cmd[i] >> 8) & 0xff);
316 vx_outb(chip, TXL, rmh->Cmd[i] & 0xff);
317
318 /* Trigger irq MESS_READ_NEXT */
319 if ((err = vx_send_irq_dsp(chip, IRQ_MESS_READ_NEXT)) < 0) {
320 snd_printd(KERN_DEBUG "vx_send_msg: IRQ_READ_NEXT error\n");
321 return err;
322 }
323 }
324 /* Wait for TX empty */
325 if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 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 spinlock
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 */
346int vx_send_msg(struct vx_core *chip, struct vx_rmh *rmh)
347{
348 unsigned long flags;
349 int err;
350
351 spin_lock_irqsave(&chip->lock, flags);
352 err = vx_send_msg_nolock(chip, rmh);
353 spin_unlock_irqrestore(&chip->lock, flags);
354 return err;
355}
356
357
358/*
359 * vx_send_rih_nolock - send an RIH to xilinx
360 * @cmd: the command to send
361 *
362 * returns 0 if successful, or a negative error code.
363 * the error code can be VX-specific, retrieved via vx_get_error().
364 *
365 * this function doesn't call spinlock at all.
366 *
367 * unlike RMH, no command is sent to DSP.
368 */
369int vx_send_rih_nolock(struct vx_core *chip, int cmd)
370{
371 int err;
372
373 if (chip->chip_status & VX_STAT_IS_STALE)
374 return -EBUSY;
375
376#if 0
377 printk(KERN_DEBUG "send_rih: cmd = 0x%x\n", cmd);
378#endif
379 if ((err = vx_reset_chk(chip)) < 0)
380 return err;
381 /* send the IRQ */
382 if ((err = vx_send_irq_dsp(chip, cmd)) < 0)
383 return err;
384 /* Wait CHK = 1 */
385 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
386 return err;
387 /* If error, read RX */
388 if (vx_inb(chip, ISR) & ISR_ERR) {
389 if ((err = vx_wait_for_rx_full(chip)) < 0)
390 return err;
391 err = vx_inb(chip, RXH) << 16;
392 err |= vx_inb(chip, RXM) << 8;
393 err |= vx_inb(chip, RXL);
394 return -(VX_ERR_MASK | err);
395 }
396 return 0;
397}
398
399
400/*
401 * vx_send_rih - send an RIH with spinlock
402 * @cmd: the command to send
403 *
404 * see vx_send_rih_nolock().
405 */
406int vx_send_rih(struct vx_core *chip, int cmd)
407{
408 unsigned long flags;
409 int err;
410
411 spin_lock_irqsave(&chip->lock, flags);
412 err = vx_send_rih_nolock(chip, cmd);
413 spin_unlock_irqrestore(&chip->lock, flags);
414 return err;
415}
416
417#define END_OF_RESET_WAIT_TIME 500 /* us */
418
419/**
420 * snd_vx_boot_xilinx - boot up the xilinx interface
421 * @boot: the boot record to load
422 */
423int snd_vx_load_boot_image(struct vx_core *chip, const struct firmware *boot)
424{
425 unsigned int i;
426 int no_fillup = vx_has_new_dsp(chip);
427
428 /* check the length of boot image */
429 if (boot->size <= 0)
430 return -EINVAL;
431 if (boot->size % 3)
432 return -EINVAL;
433#if 0
434 {
435 /* more strict check */
436 unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2];
437 if (boot->size != (c + 2) * 3)
438 return -EINVAL;
439 }
440#endif
441
442 /* reset dsp */
443 vx_reset_dsp(chip);
444
445 udelay(END_OF_RESET_WAIT_TIME); /* another wait? */
446
447 /* download boot strap */
448 for (i = 0; i < 0x600; i += 3) {
449 if (i >= boot->size) {
450 if (no_fillup)
451 break;
452 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
453 snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
454 return -EIO;
455 }
456 vx_outb(chip, TXH, 0);
457 vx_outb(chip, TXM, 0);
458 vx_outb(chip, TXL, 0);
459 } else {
460 const unsigned char *image = boot->data + i;
461 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
462 snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
463 return -EIO;
464 }
465 vx_outb(chip, TXH, image[0]);
466 vx_outb(chip, TXM, image[1]);
467 vx_outb(chip, TXL, image[2]);
468 }
469 }
470 return 0;
471}
472
473EXPORT_SYMBOL(snd_vx_load_boot_image);
474
475/*
476 * vx_test_irq_src - query the source of interrupts
477 *
478 * called from irq handler only
479 */
480static int vx_test_irq_src(struct vx_core *chip, unsigned int *ret)
481{
482 int err;
483
484 vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT);
485 spin_lock(&chip->lock);
486 err = vx_send_msg_nolock(chip, &chip->irq_rmh);
487 if (err < 0)
488 *ret = 0;
489 else
490 *ret = chip->irq_rmh.Stat[0];
491 spin_unlock(&chip->lock);
492 return err;
493}
494
495
496/*
497 * vx_interrupt - soft irq handler
498 */
499static void vx_interrupt(unsigned long private_data)
500{
501 struct vx_core *chip = (struct vx_core *) private_data;
502 unsigned int events;
503
504 if (chip->chip_status & VX_STAT_IS_STALE)
505 return;
506
507 if (vx_test_irq_src(chip, &events) < 0)
508 return;
509
510#if 0
511 if (events & 0x000800)
512 printk(KERN_ERR "DSP Stream underrun ! IRQ events = 0x%x\n", events);
513#endif
514 // printk(KERN_DEBUG "IRQ events = 0x%x\n", events);
515
516 /* We must prevent any application using this DSP
517 * and block any further request until the application
518 * either unregisters or reloads the DSP
519 */
520 if (events & FATAL_DSP_ERROR) {
521 snd_printk(KERN_ERR "vx_core: fatal DSP error!!\n");
522 return;
523 }
524
525 /* The start on time code conditions are filled (ie the time code
526 * received by the board is equal to one of those given to it).
527 */
528 if (events & TIME_CODE_EVENT_PENDING)
529 ; /* so far, nothing to do yet */
530
531 /* The frequency has changed on the board (UER mode). */
532 if (events & FREQUENCY_CHANGE_EVENT_PENDING)
533 vx_change_frequency(chip);
534
535 /* update the pcm streams */
536 vx_pcm_update_intr(chip, events);
537}
538
539
540/**
541 * snd_vx_irq_handler - interrupt handler
542 */
543irqreturn_t snd_vx_irq_handler(int irq, void *dev)
544{
545 struct vx_core *chip = dev;
546
547 if (! (chip->chip_status & VX_STAT_CHIP_INIT) ||
548 (chip->chip_status & VX_STAT_IS_STALE))
549 return IRQ_NONE;
550 if (! vx_test_and_ack(chip))
551 tasklet_schedule(&chip->tq);
552 return IRQ_HANDLED;
553}
554
555EXPORT_SYMBOL(snd_vx_irq_handler);
556
557/*
558 */
559static void vx_reset_board(struct vx_core *chip, int cold_reset)
560{
561 if (snd_BUG_ON(!chip->ops->reset_board))
562 return;
563
564 /* current source, later sync'ed with target */
565 chip->audio_source = VX_AUDIO_SRC_LINE;
566 if (cold_reset) {
567 chip->audio_source_target = chip->audio_source;
568 chip->clock_source = INTERNAL_QUARTZ;
569 chip->clock_mode = VX_CLOCK_MODE_AUTO;
570 chip->freq = 48000;
571 chip->uer_detected = VX_UER_MODE_NOT_PRESENT;
572 chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF;
573 }
574
575 chip->ops->reset_board(chip, cold_reset);
576
577 vx_reset_codec(chip, cold_reset);
578
579 vx_set_internal_clock(chip, chip->freq);
580
581 /* Reset the DSP */
582 vx_reset_dsp(chip);
583
584 if (vx_is_pcmcia(chip)) {
585 /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */
586 vx_test_and_ack(chip);
587 vx_validate_irq(chip, 1);
588 }
589
590 /* init CBits */
591 vx_set_iec958_status(chip, chip->uer_bits);
592}
593
594
595/*
596 * proc interface
597 */
598
599static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
600{
601 struct vx_core *chip = entry->private_data;
602 static char *audio_src_vxp[] = { "Line", "Mic", "Digital" };
603 static char *audio_src_vx2[] = { "Analog", "Analog", "Digital" };
604 static char *clock_mode[] = { "Auto", "Internal", "External" };
605 static char *clock_src[] = { "Internal", "External" };
606 static char *uer_type[] = { "Consumer", "Professional", "Not Present" };
607
608 snd_iprintf(buffer, "%s\n", chip->card->longname);
609 snd_iprintf(buffer, "Xilinx Firmware: %s\n",
610 chip->chip_status & VX_STAT_XILINX_LOADED ? "Loaded" : "No");
611 snd_iprintf(buffer, "Device Initialized: %s\n",
612 chip->chip_status & VX_STAT_DEVICE_INIT ? "Yes" : "No");
613 snd_iprintf(buffer, "DSP audio info:");
614 if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME)
615 snd_iprintf(buffer, " realtime");
616 if (chip->audio_info & VX_AUDIO_INFO_OFFLINE)
617 snd_iprintf(buffer, " offline");
618 if (chip->audio_info & VX_AUDIO_INFO_MPEG1)
619 snd_iprintf(buffer, " mpeg1");
620 if (chip->audio_info & VX_AUDIO_INFO_MPEG2)
621 snd_iprintf(buffer, " mpeg2");
622 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8)
623 snd_iprintf(buffer, " linear8");
624 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16)
625 snd_iprintf(buffer, " linear16");
626 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24)
627 snd_iprintf(buffer, " linear24");
628 snd_iprintf(buffer, "\n");
629 snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ?
630 audio_src_vxp[chip->audio_source] :
631 audio_src_vx2[chip->audio_source]);
632 snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]);
633 snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]);
634 snd_iprintf(buffer, "Frequency: %d\n", chip->freq);
635 snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected);
636 snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]);
637 snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n",
638 chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size,
639 chip->ibl.granularity);
640}
641
642static void vx_proc_init(struct vx_core *chip)
643{
644 struct snd_info_entry *entry;
645
646 if (! snd_card_proc_new(chip->card, "vx-status", &entry))
647 snd_info_set_text_ops(entry, chip, vx_proc_read);
648}
649
650
651/**
652 * snd_vx_dsp_boot - load the DSP boot
653 */
654int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot)
655{
656 int err;
657 int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT);
658
659 vx_reset_board(chip, cold_reset);
660 vx_validate_irq(chip, 0);
661
662 if ((err = snd_vx_load_boot_image(chip, boot)) < 0)
663 return err;
664 msleep(10);
665
666 return 0;
667}
668
669EXPORT_SYMBOL(snd_vx_dsp_boot);
670
671/**
672 * snd_vx_dsp_load - load the DSP image
673 */
674int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp)
675{
676 unsigned int i;
677 int err;
678 unsigned int csum = 0;
679 const unsigned char *image, *cptr;
680
681 if (dsp->size % 3)
682 return -EINVAL;
683
684 vx_toggle_dac_mute(chip, 1);
685
686 /* Transfert data buffer from PC to DSP */
687 for (i = 0; i < dsp->size; i += 3) {
688 image = dsp->data + i;
689 /* Wait DSP ready for a new read */
690 if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) {
691 printk(KERN_ERR
692 "dsp loading error at position %d\n", i);
693 return err;
694 }
695 cptr = image;
696 csum ^= *cptr;
697 csum = (csum >> 24) | (csum << 8);
698 vx_outb(chip, TXH, *cptr++);
699 csum ^= *cptr;
700 csum = (csum >> 24) | (csum << 8);
701 vx_outb(chip, TXM, *cptr++);
702 csum ^= *cptr;
703 csum = (csum >> 24) | (csum << 8);
704 vx_outb(chip, TXL, *cptr++);
705 }
706 snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum);
707
708 msleep(200);
709
710 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
711 return err;
712
713 vx_toggle_dac_mute(chip, 0);
714
715 vx_test_and_ack(chip);
716 vx_validate_irq(chip, 1);
717
718 return 0;
719}
720
721EXPORT_SYMBOL(snd_vx_dsp_load);
722
723#ifdef CONFIG_PM
724/*
725 * suspend
726 */
727int snd_vx_suspend(struct vx_core *chip)
728{
729 unsigned int i;
730
731 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
732 chip->chip_status |= VX_STAT_IN_SUSPEND;
733 for (i = 0; i < chip->hw->num_codecs; i++)
734 snd_pcm_suspend_all(chip->pcm[i]);
735
736 return 0;
737}
738
739EXPORT_SYMBOL(snd_vx_suspend);
740
741/*
742 * resume
743 */
744int snd_vx_resume(struct vx_core *chip)
745{
746 int i, err;
747
748 chip->chip_status &= ~VX_STAT_CHIP_INIT;
749
750 for (i = 0; i < 4; i++) {
751 if (! chip->firmware[i])
752 continue;
753 err = chip->ops->load_dsp(chip, i, chip->firmware[i]);
754 if (err < 0) {
755 snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i);
756 return -EIO;
757 }
758 }
759
760 chip->chip_status |= VX_STAT_CHIP_INIT;
761 chip->chip_status &= ~VX_STAT_IN_SUSPEND;
762
763 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
764 return 0;
765}
766
767EXPORT_SYMBOL(snd_vx_resume);
768#endif
769
770/**
771 * snd_vx_create - constructor for struct vx_core
772 * @hw: hardware specific record
773 *
774 * this function allocates the instance and prepare for the hardware
775 * initialization.
776 *
777 * return the instance pointer if successful, NULL in error.
778 */
779struct vx_core *snd_vx_create(struct snd_card *card, struct snd_vx_hardware *hw,
780 struct snd_vx_ops *ops,
781 int extra_size)
782{
783 struct vx_core *chip;
784
785 if (snd_BUG_ON(!card || !hw || !ops))
786 return NULL;
787
788 chip = kzalloc(sizeof(*chip) + extra_size, GFP_KERNEL);
789 if (! chip) {
790 snd_printk(KERN_ERR "vx_core: no memory\n");
791 return NULL;
792 }
793 spin_lock_init(&chip->lock);
794 spin_lock_init(&chip->irq_lock);
795 chip->irq = -1;
796 chip->hw = hw;
797 chip->type = hw->type;
798 chip->ops = ops;
799 tasklet_init(&chip->tq, vx_interrupt, (unsigned long)chip);
800 mutex_init(&chip->mixer_mutex);
801
802 chip->card = card;
803 card->private_data = chip;
804 strcpy(card->driver, hw->name);
805 sprintf(card->shortname, "Digigram %s", hw->name);
806
807 vx_proc_init(chip);
808
809 return chip;
810}
811
812EXPORT_SYMBOL(snd_vx_create);
813
814/*
815 * module entries
816 */
817static int __init alsa_vx_core_init(void)
818{
819 return 0;
820}
821
822static void __exit alsa_vx_core_exit(void)
823{
824}
825
826module_init(alsa_vx_core_init)
827module_exit(alsa_vx_core_exit)
1/*
2 * Driver for Digigram VX soundcards
3 *
4 * Hardware core part
5 *
6 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23#include <linux/delay.h>
24#include <linux/slab.h>
25#include <linux/interrupt.h>
26#include <linux/init.h>
27#include <linux/device.h>
28#include <linux/firmware.h>
29#include <linux/module.h>
30#include <sound/core.h>
31#include <sound/pcm.h>
32#include <sound/asoundef.h>
33#include <sound/info.h>
34#include <asm/io.h>
35#include <sound/vx_core.h>
36#include "vx_cmd.h"
37
38MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
39MODULE_DESCRIPTION("Common routines for Digigram VX drivers");
40MODULE_LICENSE("GPL");
41
42
43/*
44 * vx_check_reg_bit - wait for the specified bit is set/reset on a register
45 * @reg: register to check
46 * @mask: bit mask
47 * @bit: resultant bit to be checked
48 * @time: time-out of loop in msec
49 *
50 * returns zero if a bit matches, or a negative error code.
51 */
52int snd_vx_check_reg_bit(struct vx_core *chip, int reg, int mask, int bit, int time)
53{
54 unsigned long end_time = jiffies + (time * HZ + 999) / 1000;
55#ifdef CONFIG_SND_DEBUG
56 static char *reg_names[VX_REG_MAX] = {
57 "ICR", "CVR", "ISR", "IVR", "RXH", "RXM", "RXL",
58 "DMA", "CDSP", "RFREQ", "RUER/V2", "DATA", "MEMIRQ",
59 "ACQ", "BIT0", "BIT1", "MIC0", "MIC1", "MIC2",
60 "MIC3", "INTCSR", "CNTRL", "GPIOC",
61 "LOFREQ", "HIFREQ", "CSUER", "RUER"
62 };
63#endif
64 do {
65 if ((snd_vx_inb(chip, reg) & mask) == bit)
66 return 0;
67 //msleep(10);
68 } while (time_after_eq(end_time, jiffies));
69 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));
70 return -EIO;
71}
72
73EXPORT_SYMBOL(snd_vx_check_reg_bit);
74
75/*
76 * vx_send_irq_dsp - set command irq bit
77 * @num: the requested IRQ type, IRQ_XXX
78 *
79 * this triggers the specified IRQ request
80 * returns 0 if successful, or a negative error code.
81 *
82 */
83static int vx_send_irq_dsp(struct vx_core *chip, int num)
84{
85 int nirq;
86
87 /* wait for Hc = 0 */
88 if (snd_vx_check_reg_bit(chip, VX_CVR, CVR_HC, 0, 200) < 0)
89 return -EIO;
90
91 nirq = num;
92 if (vx_has_new_dsp(chip))
93 nirq += VXP_IRQ_OFFSET;
94 vx_outb(chip, CVR, (nirq >> 1) | CVR_HC);
95 return 0;
96}
97
98
99/*
100 * vx_reset_chk - reset CHK bit on ISR
101 *
102 * returns 0 if successful, or a negative error code.
103 */
104static int vx_reset_chk(struct vx_core *chip)
105{
106 /* Reset irq CHK */
107 if (vx_send_irq_dsp(chip, IRQ_RESET_CHK) < 0)
108 return -EIO;
109 /* Wait until CHK = 0 */
110 if (vx_check_isr(chip, ISR_CHK, 0, 200) < 0)
111 return -EIO;
112 return 0;
113}
114
115/*
116 * vx_transfer_end - terminate message transfer
117 * @cmd: IRQ message to send (IRQ_MESS_XXX_END)
118 *
119 * returns 0 if successful, or a negative error code.
120 * the error code can be VX-specific, retrieved via vx_get_error().
121 * NB: call with spinlock held!
122 */
123static int vx_transfer_end(struct vx_core *chip, int cmd)
124{
125 int err;
126
127 if ((err = vx_reset_chk(chip)) < 0)
128 return err;
129
130 /* irq MESS_READ/WRITE_END */
131 if ((err = vx_send_irq_dsp(chip, cmd)) < 0)
132 return err;
133
134 /* Wait CHK = 1 */
135 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
136 return err;
137
138 /* If error, Read RX */
139 if ((err = vx_inb(chip, ISR)) & ISR_ERR) {
140 if ((err = vx_wait_for_rx_full(chip)) < 0) {
141 snd_printd(KERN_DEBUG "transfer_end: error in rx_full\n");
142 return err;
143 }
144 err = vx_inb(chip, RXH) << 16;
145 err |= vx_inb(chip, RXM) << 8;
146 err |= vx_inb(chip, RXL);
147 snd_printd(KERN_DEBUG "transfer_end: error = 0x%x\n", err);
148 return -(VX_ERR_MASK | err);
149 }
150 return 0;
151}
152
153/*
154 * vx_read_status - return the status rmh
155 * @rmh: rmh record to store the status
156 *
157 * returns 0 if successful, or a negative error code.
158 * the error code can be VX-specific, retrieved via vx_get_error().
159 * NB: call with spinlock held!
160 */
161static int vx_read_status(struct vx_core *chip, struct vx_rmh *rmh)
162{
163 int i, err, val, size;
164
165 /* no read necessary? */
166 if (rmh->DspStat == RMH_SSIZE_FIXED && rmh->LgStat == 0)
167 return 0;
168
169 /* Wait for RX full (with timeout protection)
170 * The first word of status is in RX
171 */
172 err = vx_wait_for_rx_full(chip);
173 if (err < 0)
174 return err;
175
176 /* Read RX */
177 val = vx_inb(chip, RXH) << 16;
178 val |= vx_inb(chip, RXM) << 8;
179 val |= vx_inb(chip, RXL);
180
181 /* If status given by DSP, let's decode its size */
182 switch (rmh->DspStat) {
183 case RMH_SSIZE_ARG:
184 size = val & 0xff;
185 rmh->Stat[0] = val & 0xffff00;
186 rmh->LgStat = size + 1;
187 break;
188 case RMH_SSIZE_MASK:
189 /* Let's count the arg numbers from a mask */
190 rmh->Stat[0] = val;
191 size = 0;
192 while (val) {
193 if (val & 0x01)
194 size++;
195 val >>= 1;
196 }
197 rmh->LgStat = size + 1;
198 break;
199 default:
200 /* else retrieve the status length given by the driver */
201 size = rmh->LgStat;
202 rmh->Stat[0] = val; /* Val is the status 1st word */
203 size--; /* hence adjust remaining length */
204 break;
205 }
206
207 if (size < 1)
208 return 0;
209 if (snd_BUG_ON(size > SIZE_MAX_STATUS))
210 return -EINVAL;
211
212 for (i = 1; i <= size; i++) {
213 /* trigger an irq MESS_WRITE_NEXT */
214 err = vx_send_irq_dsp(chip, IRQ_MESS_WRITE_NEXT);
215 if (err < 0)
216 return err;
217 /* Wait for RX full (with timeout protection) */
218 err = vx_wait_for_rx_full(chip);
219 if (err < 0)
220 return err;
221 rmh->Stat[i] = vx_inb(chip, RXH) << 16;
222 rmh->Stat[i] |= vx_inb(chip, RXM) << 8;
223 rmh->Stat[i] |= vx_inb(chip, RXL);
224 }
225
226 return vx_transfer_end(chip, IRQ_MESS_WRITE_END);
227}
228
229
230#define MASK_MORE_THAN_1_WORD_COMMAND 0x00008000
231#define MASK_1_WORD_COMMAND 0x00ff7fff
232
233/*
234 * vx_send_msg_nolock - send a DSP message and read back the status
235 * @rmh: the rmh record to send and receive
236 *
237 * returns 0 if successful, or a negative error code.
238 * the error code can be VX-specific, retrieved via vx_get_error().
239 *
240 * this function doesn't call spinlock at all.
241 */
242int vx_send_msg_nolock(struct vx_core *chip, struct vx_rmh *rmh)
243{
244 int i, err;
245
246 if (chip->chip_status & VX_STAT_IS_STALE)
247 return -EBUSY;
248
249 if ((err = vx_reset_chk(chip)) < 0) {
250 snd_printd(KERN_DEBUG "vx_send_msg: vx_reset_chk error\n");
251 return err;
252 }
253
254#if 0
255 printk(KERN_DEBUG "rmh: cmd = 0x%06x, length = %d, stype = %d\n",
256 rmh->Cmd[0], rmh->LgCmd, rmh->DspStat);
257 if (rmh->LgCmd > 1) {
258 printk(KERN_DEBUG " ");
259 for (i = 1; i < rmh->LgCmd; i++)
260 printk("0x%06x ", rmh->Cmd[i]);
261 printk("\n");
262 }
263#endif
264 /* Check bit M is set according to length of the command */
265 if (rmh->LgCmd > 1)
266 rmh->Cmd[0] |= MASK_MORE_THAN_1_WORD_COMMAND;
267 else
268 rmh->Cmd[0] &= MASK_1_WORD_COMMAND;
269
270 /* Wait for TX empty */
271 if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) {
272 snd_printd(KERN_DEBUG "vx_send_msg: wait tx empty error\n");
273 return err;
274 }
275
276 /* Write Cmd[0] */
277 vx_outb(chip, TXH, (rmh->Cmd[0] >> 16) & 0xff);
278 vx_outb(chip, TXM, (rmh->Cmd[0] >> 8) & 0xff);
279 vx_outb(chip, TXL, rmh->Cmd[0] & 0xff);
280
281 /* Trigger irq MESSAGE */
282 if ((err = vx_send_irq_dsp(chip, IRQ_MESSAGE)) < 0) {
283 snd_printd(KERN_DEBUG "vx_send_msg: send IRQ_MESSAGE error\n");
284 return err;
285 }
286
287 /* Wait for CHK = 1 */
288 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
289 return err;
290
291 /* If error, get error value from RX */
292 if (vx_inb(chip, ISR) & ISR_ERR) {
293 if ((err = vx_wait_for_rx_full(chip)) < 0) {
294 snd_printd(KERN_DEBUG "vx_send_msg: rx_full read error\n");
295 return err;
296 }
297 err = vx_inb(chip, RXH) << 16;
298 err |= vx_inb(chip, RXM) << 8;
299 err |= vx_inb(chip, RXL);
300 snd_printd(KERN_DEBUG "msg got error = 0x%x at cmd[0]\n", err);
301 err = -(VX_ERR_MASK | err);
302 return err;
303 }
304
305 /* Send the other words */
306 if (rmh->LgCmd > 1) {
307 for (i = 1; i < rmh->LgCmd; i++) {
308 /* Wait for TX ready */
309 if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) {
310 snd_printd(KERN_DEBUG "vx_send_msg: tx_ready error\n");
311 return err;
312 }
313
314 /* Write Cmd[i] */
315 vx_outb(chip, TXH, (rmh->Cmd[i] >> 16) & 0xff);
316 vx_outb(chip, TXM, (rmh->Cmd[i] >> 8) & 0xff);
317 vx_outb(chip, TXL, rmh->Cmd[i] & 0xff);
318
319 /* Trigger irq MESS_READ_NEXT */
320 if ((err = vx_send_irq_dsp(chip, IRQ_MESS_READ_NEXT)) < 0) {
321 snd_printd(KERN_DEBUG "vx_send_msg: IRQ_READ_NEXT error\n");
322 return err;
323 }
324 }
325 /* Wait for TX empty */
326 if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) {
327 snd_printd(KERN_DEBUG "vx_send_msg: TX_READY error\n");
328 return err;
329 }
330 /* End of transfer */
331 err = vx_transfer_end(chip, IRQ_MESS_READ_END);
332 if (err < 0)
333 return err;
334 }
335
336 return vx_read_status(chip, rmh);
337}
338
339
340/*
341 * vx_send_msg - send a DSP message with spinlock
342 * @rmh: the rmh record to send and receive
343 *
344 * returns 0 if successful, or a negative error code.
345 * see vx_send_msg_nolock().
346 */
347int vx_send_msg(struct vx_core *chip, struct vx_rmh *rmh)
348{
349 unsigned long flags;
350 int err;
351
352 spin_lock_irqsave(&chip->lock, flags);
353 err = vx_send_msg_nolock(chip, rmh);
354 spin_unlock_irqrestore(&chip->lock, flags);
355 return err;
356}
357
358
359/*
360 * vx_send_rih_nolock - send an RIH to xilinx
361 * @cmd: the command to send
362 *
363 * returns 0 if successful, or a negative error code.
364 * the error code can be VX-specific, retrieved via vx_get_error().
365 *
366 * this function doesn't call spinlock at all.
367 *
368 * unlike RMH, no command is sent to DSP.
369 */
370int vx_send_rih_nolock(struct vx_core *chip, int cmd)
371{
372 int err;
373
374 if (chip->chip_status & VX_STAT_IS_STALE)
375 return -EBUSY;
376
377#if 0
378 printk(KERN_DEBUG "send_rih: cmd = 0x%x\n", cmd);
379#endif
380 if ((err = vx_reset_chk(chip)) < 0)
381 return err;
382 /* send the IRQ */
383 if ((err = vx_send_irq_dsp(chip, cmd)) < 0)
384 return err;
385 /* Wait CHK = 1 */
386 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
387 return err;
388 /* If error, read RX */
389 if (vx_inb(chip, ISR) & ISR_ERR) {
390 if ((err = vx_wait_for_rx_full(chip)) < 0)
391 return err;
392 err = vx_inb(chip, RXH) << 16;
393 err |= vx_inb(chip, RXM) << 8;
394 err |= vx_inb(chip, RXL);
395 return -(VX_ERR_MASK | err);
396 }
397 return 0;
398}
399
400
401/*
402 * vx_send_rih - send an RIH with spinlock
403 * @cmd: the command to send
404 *
405 * see vx_send_rih_nolock().
406 */
407int vx_send_rih(struct vx_core *chip, int cmd)
408{
409 unsigned long flags;
410 int err;
411
412 spin_lock_irqsave(&chip->lock, flags);
413 err = vx_send_rih_nolock(chip, cmd);
414 spin_unlock_irqrestore(&chip->lock, flags);
415 return err;
416}
417
418#define END_OF_RESET_WAIT_TIME 500 /* us */
419
420/**
421 * snd_vx_boot_xilinx - boot up the xilinx interface
422 * @boot: the boot record to load
423 */
424int snd_vx_load_boot_image(struct vx_core *chip, const struct firmware *boot)
425{
426 unsigned int i;
427 int no_fillup = vx_has_new_dsp(chip);
428
429 /* check the length of boot image */
430 if (boot->size <= 0)
431 return -EINVAL;
432 if (boot->size % 3)
433 return -EINVAL;
434#if 0
435 {
436 /* more strict check */
437 unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2];
438 if (boot->size != (c + 2) * 3)
439 return -EINVAL;
440 }
441#endif
442
443 /* reset dsp */
444 vx_reset_dsp(chip);
445
446 udelay(END_OF_RESET_WAIT_TIME); /* another wait? */
447
448 /* download boot strap */
449 for (i = 0; i < 0x600; i += 3) {
450 if (i >= boot->size) {
451 if (no_fillup)
452 break;
453 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
454 snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
455 return -EIO;
456 }
457 vx_outb(chip, TXH, 0);
458 vx_outb(chip, TXM, 0);
459 vx_outb(chip, TXL, 0);
460 } else {
461 const unsigned char *image = boot->data + i;
462 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
463 snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
464 return -EIO;
465 }
466 vx_outb(chip, TXH, image[0]);
467 vx_outb(chip, TXM, image[1]);
468 vx_outb(chip, TXL, image[2]);
469 }
470 }
471 return 0;
472}
473
474EXPORT_SYMBOL(snd_vx_load_boot_image);
475
476/*
477 * vx_test_irq_src - query the source of interrupts
478 *
479 * called from irq handler only
480 */
481static int vx_test_irq_src(struct vx_core *chip, unsigned int *ret)
482{
483 int err;
484
485 vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT);
486 spin_lock(&chip->lock);
487 err = vx_send_msg_nolock(chip, &chip->irq_rmh);
488 if (err < 0)
489 *ret = 0;
490 else
491 *ret = chip->irq_rmh.Stat[0];
492 spin_unlock(&chip->lock);
493 return err;
494}
495
496
497/*
498 * vx_interrupt - soft irq handler
499 */
500static void vx_interrupt(unsigned long private_data)
501{
502 struct vx_core *chip = (struct vx_core *) private_data;
503 unsigned int events;
504
505 if (chip->chip_status & VX_STAT_IS_STALE)
506 return;
507
508 if (vx_test_irq_src(chip, &events) < 0)
509 return;
510
511#if 0
512 if (events & 0x000800)
513 printk(KERN_ERR "DSP Stream underrun ! IRQ events = 0x%x\n", events);
514#endif
515 // printk(KERN_DEBUG "IRQ events = 0x%x\n", events);
516
517 /* We must prevent any application using this DSP
518 * and block any further request until the application
519 * either unregisters or reloads the DSP
520 */
521 if (events & FATAL_DSP_ERROR) {
522 snd_printk(KERN_ERR "vx_core: fatal DSP error!!\n");
523 return;
524 }
525
526 /* The start on time code conditions are filled (ie the time code
527 * received by the board is equal to one of those given to it).
528 */
529 if (events & TIME_CODE_EVENT_PENDING)
530 ; /* so far, nothing to do yet */
531
532 /* The frequency has changed on the board (UER mode). */
533 if (events & FREQUENCY_CHANGE_EVENT_PENDING)
534 vx_change_frequency(chip);
535
536 /* update the pcm streams */
537 vx_pcm_update_intr(chip, events);
538}
539
540
541/**
542 * snd_vx_irq_handler - interrupt handler
543 */
544irqreturn_t snd_vx_irq_handler(int irq, void *dev)
545{
546 struct vx_core *chip = dev;
547
548 if (! (chip->chip_status & VX_STAT_CHIP_INIT) ||
549 (chip->chip_status & VX_STAT_IS_STALE))
550 return IRQ_NONE;
551 if (! vx_test_and_ack(chip))
552 tasklet_schedule(&chip->tq);
553 return IRQ_HANDLED;
554}
555
556EXPORT_SYMBOL(snd_vx_irq_handler);
557
558/*
559 */
560static void vx_reset_board(struct vx_core *chip, int cold_reset)
561{
562 if (snd_BUG_ON(!chip->ops->reset_board))
563 return;
564
565 /* current source, later sync'ed with target */
566 chip->audio_source = VX_AUDIO_SRC_LINE;
567 if (cold_reset) {
568 chip->audio_source_target = chip->audio_source;
569 chip->clock_source = INTERNAL_QUARTZ;
570 chip->clock_mode = VX_CLOCK_MODE_AUTO;
571 chip->freq = 48000;
572 chip->uer_detected = VX_UER_MODE_NOT_PRESENT;
573 chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF;
574 }
575
576 chip->ops->reset_board(chip, cold_reset);
577
578 vx_reset_codec(chip, cold_reset);
579
580 vx_set_internal_clock(chip, chip->freq);
581
582 /* Reset the DSP */
583 vx_reset_dsp(chip);
584
585 if (vx_is_pcmcia(chip)) {
586 /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */
587 vx_test_and_ack(chip);
588 vx_validate_irq(chip, 1);
589 }
590
591 /* init CBits */
592 vx_set_iec958_status(chip, chip->uer_bits);
593}
594
595
596/*
597 * proc interface
598 */
599
600static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
601{
602 struct vx_core *chip = entry->private_data;
603 static char *audio_src_vxp[] = { "Line", "Mic", "Digital" };
604 static char *audio_src_vx2[] = { "Analog", "Analog", "Digital" };
605 static char *clock_mode[] = { "Auto", "Internal", "External" };
606 static char *clock_src[] = { "Internal", "External" };
607 static char *uer_type[] = { "Consumer", "Professional", "Not Present" };
608
609 snd_iprintf(buffer, "%s\n", chip->card->longname);
610 snd_iprintf(buffer, "Xilinx Firmware: %s\n",
611 chip->chip_status & VX_STAT_XILINX_LOADED ? "Loaded" : "No");
612 snd_iprintf(buffer, "Device Initialized: %s\n",
613 chip->chip_status & VX_STAT_DEVICE_INIT ? "Yes" : "No");
614 snd_iprintf(buffer, "DSP audio info:");
615 if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME)
616 snd_iprintf(buffer, " realtime");
617 if (chip->audio_info & VX_AUDIO_INFO_OFFLINE)
618 snd_iprintf(buffer, " offline");
619 if (chip->audio_info & VX_AUDIO_INFO_MPEG1)
620 snd_iprintf(buffer, " mpeg1");
621 if (chip->audio_info & VX_AUDIO_INFO_MPEG2)
622 snd_iprintf(buffer, " mpeg2");
623 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8)
624 snd_iprintf(buffer, " linear8");
625 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16)
626 snd_iprintf(buffer, " linear16");
627 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24)
628 snd_iprintf(buffer, " linear24");
629 snd_iprintf(buffer, "\n");
630 snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ?
631 audio_src_vxp[chip->audio_source] :
632 audio_src_vx2[chip->audio_source]);
633 snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]);
634 snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]);
635 snd_iprintf(buffer, "Frequency: %d\n", chip->freq);
636 snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected);
637 snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]);
638 snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n",
639 chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size,
640 chip->ibl.granularity);
641}
642
643static void vx_proc_init(struct vx_core *chip)
644{
645 struct snd_info_entry *entry;
646
647 if (! snd_card_proc_new(chip->card, "vx-status", &entry))
648 snd_info_set_text_ops(entry, chip, vx_proc_read);
649}
650
651
652/**
653 * snd_vx_dsp_boot - load the DSP boot
654 */
655int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot)
656{
657 int err;
658 int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT);
659
660 vx_reset_board(chip, cold_reset);
661 vx_validate_irq(chip, 0);
662
663 if ((err = snd_vx_load_boot_image(chip, boot)) < 0)
664 return err;
665 msleep(10);
666
667 return 0;
668}
669
670EXPORT_SYMBOL(snd_vx_dsp_boot);
671
672/**
673 * snd_vx_dsp_load - load the DSP image
674 */
675int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp)
676{
677 unsigned int i;
678 int err;
679 unsigned int csum = 0;
680 const unsigned char *image, *cptr;
681
682 if (dsp->size % 3)
683 return -EINVAL;
684
685 vx_toggle_dac_mute(chip, 1);
686
687 /* Transfert data buffer from PC to DSP */
688 for (i = 0; i < dsp->size; i += 3) {
689 image = dsp->data + i;
690 /* Wait DSP ready for a new read */
691 if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) {
692 printk(KERN_ERR
693 "dsp loading error at position %d\n", i);
694 return err;
695 }
696 cptr = image;
697 csum ^= *cptr;
698 csum = (csum >> 24) | (csum << 8);
699 vx_outb(chip, TXH, *cptr++);
700 csum ^= *cptr;
701 csum = (csum >> 24) | (csum << 8);
702 vx_outb(chip, TXM, *cptr++);
703 csum ^= *cptr;
704 csum = (csum >> 24) | (csum << 8);
705 vx_outb(chip, TXL, *cptr++);
706 }
707 snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum);
708
709 msleep(200);
710
711 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
712 return err;
713
714 vx_toggle_dac_mute(chip, 0);
715
716 vx_test_and_ack(chip);
717 vx_validate_irq(chip, 1);
718
719 return 0;
720}
721
722EXPORT_SYMBOL(snd_vx_dsp_load);
723
724#ifdef CONFIG_PM
725/*
726 * suspend
727 */
728int snd_vx_suspend(struct vx_core *chip, pm_message_t state)
729{
730 unsigned int i;
731
732 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
733 chip->chip_status |= VX_STAT_IN_SUSPEND;
734 for (i = 0; i < chip->hw->num_codecs; i++)
735 snd_pcm_suspend_all(chip->pcm[i]);
736
737 return 0;
738}
739
740EXPORT_SYMBOL(snd_vx_suspend);
741
742/*
743 * resume
744 */
745int snd_vx_resume(struct vx_core *chip)
746{
747 int i, err;
748
749 chip->chip_status &= ~VX_STAT_CHIP_INIT;
750
751 for (i = 0; i < 4; i++) {
752 if (! chip->firmware[i])
753 continue;
754 err = chip->ops->load_dsp(chip, i, chip->firmware[i]);
755 if (err < 0) {
756 snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i);
757 return -EIO;
758 }
759 }
760
761 chip->chip_status |= VX_STAT_CHIP_INIT;
762 chip->chip_status &= ~VX_STAT_IN_SUSPEND;
763
764 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
765 return 0;
766}
767
768EXPORT_SYMBOL(snd_vx_resume);
769#endif
770
771/**
772 * snd_vx_create - constructor for struct vx_core
773 * @hw: hardware specific record
774 *
775 * this function allocates the instance and prepare for the hardware
776 * initialization.
777 *
778 * return the instance pointer if successful, NULL in error.
779 */
780struct vx_core *snd_vx_create(struct snd_card *card, struct snd_vx_hardware *hw,
781 struct snd_vx_ops *ops,
782 int extra_size)
783{
784 struct vx_core *chip;
785
786 if (snd_BUG_ON(!card || !hw || !ops))
787 return NULL;
788
789 chip = kzalloc(sizeof(*chip) + extra_size, GFP_KERNEL);
790 if (! chip) {
791 snd_printk(KERN_ERR "vx_core: no memory\n");
792 return NULL;
793 }
794 spin_lock_init(&chip->lock);
795 spin_lock_init(&chip->irq_lock);
796 chip->irq = -1;
797 chip->hw = hw;
798 chip->type = hw->type;
799 chip->ops = ops;
800 tasklet_init(&chip->tq, vx_interrupt, (unsigned long)chip);
801 mutex_init(&chip->mixer_mutex);
802
803 chip->card = card;
804 card->private_data = chip;
805 strcpy(card->driver, hw->name);
806 sprintf(card->shortname, "Digigram %s", hw->name);
807
808 vx_proc_init(chip);
809
810 return chip;
811}
812
813EXPORT_SYMBOL(snd_vx_create);
814
815/*
816 * module entries
817 */
818static int __init alsa_vx_core_init(void)
819{
820 return 0;
821}
822
823static void __exit alsa_vx_core_exit(void)
824{
825}
826
827module_init(alsa_vx_core_init)
828module_exit(alsa_vx_core_exit)