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Linux/sound/drivers/vx/vx_core.c

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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 <linux/io.h>
 31 #include <sound/core.h>
 32 #include <sound/pcm.h>
 33 #include <sound/asoundef.h>
 34 #include <sound/info.h>
 35 #include <sound/vx_core.h>
 36 #include "vx_cmd.h"
 37 
 38 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
 39 MODULE_DESCRIPTION("Common routines for Digigram VX drivers");
 40 MODULE_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  */
 52 int 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 
 72 EXPORT_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  */
 82 static 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  */
103 static 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 mutex held!
121  */
122 static 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 mutex held!
159  */
160 static 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 mutex lock at all.
240  */
241 int 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(KERN_CONT "0x%06x ", rmh->Cmd[i]);
260                 printk(KERN_CONT "\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 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  */
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  */
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         if ((err = vx_reset_chk(chip)) < 0)
379                 return err;
380         /* send the IRQ */
381         if ((err = vx_send_irq_dsp(chip, cmd)) < 0)
382                 return err;
383         /* Wait CHK = 1 */
384         if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
385                 return err;
386         /* If error, read RX */
387         if (vx_inb(chip, ISR) & ISR_ERR) {
388                 if ((err = vx_wait_for_rx_full(chip)) < 0)
389                         return err;
390                 err = vx_inb(chip, RXH) << 16;
391                 err |= vx_inb(chip, RXM) << 8;
392                 err |= vx_inb(chip, RXL);
393                 return -(VX_ERR_MASK | err);
394         }
395         return 0;
396 }
397 
398 
399 /*
400  * vx_send_rih - send an RIH with mutex
401  * @cmd: the command to send
402  *
403  * see vx_send_rih_nolock().
404  */
405 int vx_send_rih(struct vx_core *chip, int cmd)
406 {
407         int err;
408 
409         mutex_lock(&chip->lock);
410         err = vx_send_rih_nolock(chip, cmd);
411         mutex_unlock(&chip->lock);
412         return err;
413 }
414 
415 #define END_OF_RESET_WAIT_TIME          500     /* us */
416 
417 /**
418  * snd_vx_boot_xilinx - boot up the xilinx interface
419  * @chip: VX core instance
420  * @boot: the boot record to load
421  */
422 int snd_vx_load_boot_image(struct vx_core *chip, const struct firmware *boot)
423 {
424         unsigned int i;
425         int no_fillup = vx_has_new_dsp(chip);
426 
427         /* check the length of boot image */
428         if (boot->size <= 0)
429                 return -EINVAL;
430         if (boot->size % 3)
431                 return -EINVAL;
432 #if 0
433         {
434                 /* more strict check */
435                 unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2];
436                 if (boot->size != (c + 2) * 3)
437                         return -EINVAL;
438         }
439 #endif
440 
441         /* reset dsp */
442         vx_reset_dsp(chip);
443         
444         udelay(END_OF_RESET_WAIT_TIME); /* another wait? */
445 
446         /* download boot strap */
447         for (i = 0; i < 0x600; i += 3) {
448                 if (i >= boot->size) {
449                         if (no_fillup)
450                                 break;
451                         if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
452                                 snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
453                                 return -EIO;
454                         }
455                         vx_outb(chip, TXH, 0);
456                         vx_outb(chip, TXM, 0);
457                         vx_outb(chip, TXL, 0);
458                 } else {
459                         const unsigned char *image = boot->data + i;
460                         if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
461                                 snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
462                                 return -EIO;
463                         }
464                         vx_outb(chip, TXH, image[0]);
465                         vx_outb(chip, TXM, image[1]);
466                         vx_outb(chip, TXL, image[2]);
467                 }
468         }
469         return 0;
470 }
471 
472 EXPORT_SYMBOL(snd_vx_load_boot_image);
473 
474 /*
475  * vx_test_irq_src - query the source of interrupts
476  *
477  * called from irq handler only
478  */
479 static int vx_test_irq_src(struct vx_core *chip, unsigned int *ret)
480 {
481         int err;
482 
483         vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT);
484         mutex_lock(&chip->lock);
485         err = vx_send_msg_nolock(chip, &chip->irq_rmh);
486         if (err < 0)
487                 *ret = 0;
488         else
489                 *ret = chip->irq_rmh.Stat[0];
490         mutex_unlock(&chip->lock);
491         return err;
492 }
493 
494 
495 /*
496  * snd_vx_threaded_irq_handler - threaded irq handler
497  */
498 irqreturn_t snd_vx_threaded_irq_handler(int irq, void *dev)
499 {
500         struct vx_core *chip = dev;
501         unsigned int events;
502                 
503         if (chip->chip_status & VX_STAT_IS_STALE)
504                 return IRQ_HANDLED;
505 
506         if (vx_test_irq_src(chip, &events) < 0)
507                 return IRQ_HANDLED;
508     
509 #if 0
510         if (events & 0x000800)
511                 printk(KERN_ERR "DSP Stream underrun ! IRQ events = 0x%x\n", events);
512 #endif
513         // printk(KERN_DEBUG "IRQ events = 0x%x\n", events);
514 
515         /* We must prevent any application using this DSP
516          * and block any further request until the application
517          * either unregisters or reloads the DSP
518          */
519         if (events & FATAL_DSP_ERROR) {
520                 snd_printk(KERN_ERR "vx_core: fatal DSP error!!\n");
521                 return IRQ_HANDLED;
522         }
523 
524         /* The start on time code conditions are filled (ie the time code
525          * received by the board is equal to one of those given to it).
526          */
527         if (events & TIME_CODE_EVENT_PENDING)
528                 ; /* so far, nothing to do yet */
529 
530         /* The frequency has changed on the board (UER mode). */
531         if (events & FREQUENCY_CHANGE_EVENT_PENDING)
532                 vx_change_frequency(chip);
533 
534         /* update the pcm streams */
535         vx_pcm_update_intr(chip, events);
536         return IRQ_HANDLED;
537 }
538 EXPORT_SYMBOL(snd_vx_threaded_irq_handler);
539 
540 /**
541  * snd_vx_irq_handler - interrupt handler
542  * @irq: irq number
543  * @dev: VX core instance
544  */
545 irqreturn_t snd_vx_irq_handler(int irq, void *dev)
546 {
547         struct vx_core *chip = dev;
548 
549         if (! (chip->chip_status & VX_STAT_CHIP_INIT) ||
550             (chip->chip_status & VX_STAT_IS_STALE))
551                 return IRQ_NONE;
552         if (! vx_test_and_ack(chip))
553                 return IRQ_WAKE_THREAD;
554         return IRQ_NONE;
555 }
556 
557 EXPORT_SYMBOL(snd_vx_irq_handler);
558 
559 /*
560  */
561 static void vx_reset_board(struct vx_core *chip, int cold_reset)
562 {
563         if (snd_BUG_ON(!chip->ops->reset_board))
564                 return;
565 
566         /* current source, later sync'ed with target */
567         chip->audio_source = VX_AUDIO_SRC_LINE;
568         if (cold_reset) {
569                 chip->audio_source_target = chip->audio_source;
570                 chip->clock_source = INTERNAL_QUARTZ;
571                 chip->clock_mode = VX_CLOCK_MODE_AUTO;
572                 chip->freq = 48000;
573                 chip->uer_detected = VX_UER_MODE_NOT_PRESENT;
574                 chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF;
575         }
576 
577         chip->ops->reset_board(chip, cold_reset);
578 
579         vx_reset_codec(chip, cold_reset);
580 
581         vx_set_internal_clock(chip, chip->freq);
582 
583         /* Reset the DSP */
584         vx_reset_dsp(chip);
585 
586         if (vx_is_pcmcia(chip)) {
587                 /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */
588                 vx_test_and_ack(chip);
589                 vx_validate_irq(chip, 1);
590         }
591 
592         /* init CBits */
593         vx_set_iec958_status(chip, chip->uer_bits);
594 }
595 
596 
597 /*
598  * proc interface
599  */
600 
601 static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
602 {
603         struct vx_core *chip = entry->private_data;
604         static char *audio_src_vxp[] = { "Line", "Mic", "Digital" };
605         static char *audio_src_vx2[] = { "Analog", "Analog", "Digital" };
606         static char *clock_mode[] = { "Auto", "Internal", "External" };
607         static char *clock_src[] = { "Internal", "External" };
608         static char *uer_type[] = { "Consumer", "Professional", "Not Present" };
609         
610         snd_iprintf(buffer, "%s\n", chip->card->longname);
611         snd_iprintf(buffer, "Xilinx Firmware: %s\n",
612                     chip->chip_status & VX_STAT_XILINX_LOADED ? "Loaded" : "No");
613         snd_iprintf(buffer, "Device Initialized: %s\n",
614                     chip->chip_status & VX_STAT_DEVICE_INIT ? "Yes" : "No");
615         snd_iprintf(buffer, "DSP audio info:");
616         if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME)
617                 snd_iprintf(buffer, " realtime");
618         if (chip->audio_info & VX_AUDIO_INFO_OFFLINE)
619                 snd_iprintf(buffer, " offline");
620         if (chip->audio_info & VX_AUDIO_INFO_MPEG1)
621                 snd_iprintf(buffer, " mpeg1");
622         if (chip->audio_info & VX_AUDIO_INFO_MPEG2)
623                 snd_iprintf(buffer, " mpeg2");
624         if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8)
625                 snd_iprintf(buffer, " linear8");
626         if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16)
627                 snd_iprintf(buffer, " linear16");
628         if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24)
629                 snd_iprintf(buffer, " linear24");
630         snd_iprintf(buffer, "\n");
631         snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ?
632                     audio_src_vxp[chip->audio_source] :
633                     audio_src_vx2[chip->audio_source]);
634         snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]);
635         snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]);
636         snd_iprintf(buffer, "Frequency: %d\n", chip->freq);
637         snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected);
638         snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]);
639         snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n",
640                     chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size,
641                     chip->ibl.granularity);
642 }
643 
644 static void vx_proc_init(struct vx_core *chip)
645 {
646         struct snd_info_entry *entry;
647 
648         if (! snd_card_proc_new(chip->card, "vx-status", &entry))
649                 snd_info_set_text_ops(entry, chip, vx_proc_read);
650 }
651 
652 
653 /**
654  * snd_vx_dsp_boot - load the DSP boot
655  * @chip: VX core instance
656  * @boot: firmware data
657  */
658 int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot)
659 {
660         int err;
661         int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT);
662 
663         vx_reset_board(chip, cold_reset);
664         vx_validate_irq(chip, 0);
665 
666         if ((err = snd_vx_load_boot_image(chip, boot)) < 0)
667                 return err;
668         msleep(10);
669 
670         return 0;
671 }
672 
673 EXPORT_SYMBOL(snd_vx_dsp_boot);
674 
675 /**
676  * snd_vx_dsp_load - load the DSP image
677  * @chip: VX core instance
678  * @dsp: firmware data
679  */
680 int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp)
681 {
682         unsigned int i;
683         int err;
684         unsigned int csum = 0;
685         const unsigned char *image, *cptr;
686 
687         if (dsp->size % 3)
688                 return -EINVAL;
689 
690         vx_toggle_dac_mute(chip, 1);
691 
692         /* Transfert data buffer from PC to DSP */
693         for (i = 0; i < dsp->size; i += 3) {
694                 image = dsp->data + i;
695                 /* Wait DSP ready for a new read */
696                 if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) {
697                         printk(KERN_ERR
698                                "dsp loading error at position %d\n", i);
699                         return err;
700                 }
701                 cptr = image;
702                 csum ^= *cptr;
703                 csum = (csum >> 24) | (csum << 8);
704                 vx_outb(chip, TXH, *cptr++);
705                 csum ^= *cptr;
706                 csum = (csum >> 24) | (csum << 8);
707                 vx_outb(chip, TXM, *cptr++);
708                 csum ^= *cptr;
709                 csum = (csum >> 24) | (csum << 8);
710                 vx_outb(chip, TXL, *cptr++);
711         }
712         snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum);
713 
714         msleep(200);
715 
716         if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
717                 return err;
718 
719         vx_toggle_dac_mute(chip, 0);
720 
721         vx_test_and_ack(chip);
722         vx_validate_irq(chip, 1);
723 
724         return 0;
725 }
726 
727 EXPORT_SYMBOL(snd_vx_dsp_load);
728 
729 #ifdef CONFIG_PM
730 /*
731  * suspend
732  */
733 int snd_vx_suspend(struct vx_core *chip)
734 {
735         unsigned int i;
736 
737         snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
738         chip->chip_status |= VX_STAT_IN_SUSPEND;
739         for (i = 0; i < chip->hw->num_codecs; i++)
740                 snd_pcm_suspend_all(chip->pcm[i]);
741 
742         return 0;
743 }
744 
745 EXPORT_SYMBOL(snd_vx_suspend);
746 
747 /*
748  * resume
749  */
750 int snd_vx_resume(struct vx_core *chip)
751 {
752         int i, err;
753 
754         chip->chip_status &= ~VX_STAT_CHIP_INIT;
755 
756         for (i = 0; i < 4; i++) {
757                 if (! chip->firmware[i])
758                         continue;
759                 err = chip->ops->load_dsp(chip, i, chip->firmware[i]);
760                 if (err < 0) {
761                         snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i);
762                         return -EIO;
763                 }
764         }
765 
766         chip->chip_status |= VX_STAT_CHIP_INIT;
767         chip->chip_status &= ~VX_STAT_IN_SUSPEND;
768 
769         snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
770         return 0;
771 }
772 
773 EXPORT_SYMBOL(snd_vx_resume);
774 #endif
775 
776 /**
777  * snd_vx_create - constructor for struct vx_core
778  * @card: card instance
779  * @hw: hardware specific record
780  * @ops: VX ops pointer
781  * @extra_size: extra byte size to allocate appending to chip
782  *
783  * this function allocates the instance and prepare for the hardware
784  * initialization.
785  *
786  * return the instance pointer if successful, NULL in error.
787  */
788 struct vx_core *snd_vx_create(struct snd_card *card, struct snd_vx_hardware *hw,
789                               struct snd_vx_ops *ops,
790                               int extra_size)
791 {
792         struct vx_core *chip;
793 
794         if (snd_BUG_ON(!card || !hw || !ops))
795                 return NULL;
796 
797         chip = kzalloc(sizeof(*chip) + extra_size, GFP_KERNEL);
798         if (! chip)
799                 return NULL;
800         mutex_init(&chip->lock);
801         chip->irq = -1;
802         chip->hw = hw;
803         chip->type = hw->type;
804         chip->ops = ops;
805         mutex_init(&chip->mixer_mutex);
806 
807         chip->card = card;
808         card->private_data = chip;
809         strcpy(card->driver, hw->name);
810         sprintf(card->shortname, "Digigram %s", hw->name);
811 
812         vx_proc_init(chip);
813 
814         return chip;
815 }
816 
817 EXPORT_SYMBOL(snd_vx_create);
818 
819 /*
820  * module entries
821  */
822 static int __init alsa_vx_core_init(void)
823 {
824         return 0;
825 }
826 
827 static void __exit alsa_vx_core_exit(void)
828 {
829 }
830 
831 module_init(alsa_vx_core_init)
832 module_exit(alsa_vx_core_exit)
833 

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