root/sound/drivers/vx/vx_core.c

DEFINITIONS

1. snd_vx_check_reg_bit
2. vx_send_irq_dsp
3. vx_reset_chk
4. vx_transfer_end
5. vx_read_status
6. vx_send_msg_nolock
7. vx_send_msg
8. vx_send_rih_nolock
9. vx_send_rih
10. snd_vx_load_boot_image
11. vx_test_irq_src
12. snd_vx_threaded_irq_handler
13. snd_vx_irq_handler
14. vx_reset_board
15. vx_proc_read
16. vx_proc_init
17. snd_vx_dsp_boot
18. snd_vx_dsp_load
19. snd_vx_suspend
20. snd_vx_resume
21. snd_vx_create

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