linux/sound/drivers/vx/vx_core.c
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   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
  25MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
  26MODULE_DESCRIPTION("Common routines for Digigram VX drivers");
  27MODULE_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 */
  39int snd_vx_check_reg_bit(struct vx_core *chip, int reg, int mask, int bit, int time)
  40{
  41        unsigned long end_time = jiffies + (time * HZ + 999) / 1000;
  42        static const char * const reg_names[VX_REG_MAX] = {
  43                "ICR", "CVR", "ISR", "IVR", "RXH", "RXM", "RXL",
  44                "DMA", "CDSP", "RFREQ", "RUER/V2", "DATA", "MEMIRQ",
  45                "ACQ", "BIT0", "BIT1", "MIC0", "MIC1", "MIC2",
  46                "MIC3", "INTCSR", "CNTRL", "GPIOC",
  47                "LOFREQ", "HIFREQ", "CSUER", "RUER"
  48        };
  49
  50        do {
  51                if ((snd_vx_inb(chip, reg) & mask) == bit)
  52                        return 0;
  53                //msleep(10);
  54        } while (time_after_eq(end_time, jiffies));
  55        snd_printd(KERN_DEBUG "vx_check_reg_bit: timeout, reg=%s, mask=0x%x, val=0x%x\n", reg_names[reg], mask, snd_vx_inb(chip, reg));
  56        return -EIO;
  57}
  58
  59EXPORT_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 */
  69static 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 */
  90static 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 */
 109static 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 */
 147static 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 */
 228int 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 */
 333int 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 */
 355int 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 */
 392int 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 */
 409int 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
 459EXPORT_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 */
 466static 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 */
 485irqreturn_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
 518        /* The frequency has changed on the board (UER mode). */
 519        if (events & FREQUENCY_CHANGE_EVENT_PENDING)
 520                vx_change_frequency(chip);
 521
 522        /* update the pcm streams */
 523        vx_pcm_update_intr(chip, events);
 524        return IRQ_HANDLED;
 525}
 526EXPORT_SYMBOL(snd_vx_threaded_irq_handler);
 527
 528/**
 529 * snd_vx_irq_handler - interrupt handler
 530 * @irq: irq number
 531 * @dev: VX core instance
 532 */
 533irqreturn_t snd_vx_irq_handler(int irq, void *dev)
 534{
 535        struct vx_core *chip = dev;
 536
 537        if (! (chip->chip_status & VX_STAT_CHIP_INIT) ||
 538            (chip->chip_status & VX_STAT_IS_STALE))
 539                return IRQ_NONE;
 540        if (! vx_test_and_ack(chip))
 541                return IRQ_WAKE_THREAD;
 542        return IRQ_NONE;
 543}
 544
 545EXPORT_SYMBOL(snd_vx_irq_handler);
 546
 547/*
 548 */
 549static void vx_reset_board(struct vx_core *chip, int cold_reset)
 550{
 551        if (snd_BUG_ON(!chip->ops->reset_board))
 552                return;
 553
 554        /* current source, later sync'ed with target */
 555        chip->audio_source = VX_AUDIO_SRC_LINE;
 556        if (cold_reset) {
 557                chip->audio_source_target = chip->audio_source;
 558                chip->clock_source = INTERNAL_QUARTZ;
 559                chip->clock_mode = VX_CLOCK_MODE_AUTO;
 560                chip->freq = 48000;
 561                chip->uer_detected = VX_UER_MODE_NOT_PRESENT;
 562                chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF;
 563        }
 564
 565        chip->ops->reset_board(chip, cold_reset);
 566
 567        vx_reset_codec(chip, cold_reset);
 568
 569        vx_set_internal_clock(chip, chip->freq);
 570
 571        /* Reset the DSP */
 572        vx_reset_dsp(chip);
 573
 574        if (vx_is_pcmcia(chip)) {
 575                /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */
 576                vx_test_and_ack(chip);
 577                vx_validate_irq(chip, 1);
 578        }
 579
 580        /* init CBits */
 581        vx_set_iec958_status(chip, chip->uer_bits);
 582}
 583
 584
 585/*
 586 * proc interface
 587 */
 588
 589static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
 590{
 591        struct vx_core *chip = entry->private_data;
 592        static const char * const audio_src_vxp[] = { "Line", "Mic", "Digital" };
 593        static const char * const audio_src_vx2[] = { "Analog", "Analog", "Digital" };
 594        static const char * const clock_mode[] = { "Auto", "Internal", "External" };
 595        static const char * const clock_src[] = { "Internal", "External" };
 596        static const char * const uer_type[] = { "Consumer", "Professional", "Not Present" };
 597        
 598        snd_iprintf(buffer, "%s\n", chip->card->longname);
 599        snd_iprintf(buffer, "Xilinx Firmware: %s\n",
 600                    (chip->chip_status & VX_STAT_XILINX_LOADED) ? "Loaded" : "No");
 601        snd_iprintf(buffer, "Device Initialized: %s\n",
 602                    (chip->chip_status & VX_STAT_DEVICE_INIT) ? "Yes" : "No");
 603        snd_iprintf(buffer, "DSP audio info:");
 604        if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME)
 605                snd_iprintf(buffer, " realtime");
 606        if (chip->audio_info & VX_AUDIO_INFO_OFFLINE)
 607                snd_iprintf(buffer, " offline");
 608        if (chip->audio_info & VX_AUDIO_INFO_MPEG1)
 609                snd_iprintf(buffer, " mpeg1");
 610        if (chip->audio_info & VX_AUDIO_INFO_MPEG2)
 611                snd_iprintf(buffer, " mpeg2");
 612        if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8)
 613                snd_iprintf(buffer, " linear8");
 614        if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16)
 615                snd_iprintf(buffer, " linear16");
 616        if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24)
 617                snd_iprintf(buffer, " linear24");
 618        snd_iprintf(buffer, "\n");
 619        snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ?
 620                    audio_src_vxp[chip->audio_source] :
 621                    audio_src_vx2[chip->audio_source]);
 622        snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]);
 623        snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]);
 624        snd_iprintf(buffer, "Frequency: %d\n", chip->freq);
 625        snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected);
 626        snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]);
 627        snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n",
 628                    chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size,
 629                    chip->ibl.granularity);
 630}
 631
 632static void vx_proc_init(struct vx_core *chip)
 633{
 634        snd_card_ro_proc_new(chip->card, "vx-status", chip, vx_proc_read);
 635}
 636
 637
 638/**
 639 * snd_vx_dsp_boot - load the DSP boot
 640 * @chip: VX core instance
 641 * @boot: firmware data
 642 */
 643int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot)
 644{
 645        int err;
 646        int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT);
 647
 648        vx_reset_board(chip, cold_reset);
 649        vx_validate_irq(chip, 0);
 650
 651        if ((err = snd_vx_load_boot_image(chip, boot)) < 0)
 652                return err;
 653        msleep(10);
 654
 655        return 0;
 656}
 657
 658EXPORT_SYMBOL(snd_vx_dsp_boot);
 659
 660/**
 661 * snd_vx_dsp_load - load the DSP image
 662 * @chip: VX core instance
 663 * @dsp: firmware data
 664 */
 665int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp)
 666{
 667        unsigned int i;
 668        int err;
 669        unsigned int csum = 0;
 670        const unsigned char *image, *cptr;
 671
 672        if (dsp->size % 3)
 673                return -EINVAL;
 674
 675        vx_toggle_dac_mute(chip, 1);
 676
 677        /* Transfert data buffer from PC to DSP */
 678        for (i = 0; i < dsp->size; i += 3) {
 679                image = dsp->data + i;
 680                /* Wait DSP ready for a new read */
 681                if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) {
 682                        printk(KERN_ERR
 683                               "dsp loading error at position %d\n", i);
 684                        return err;
 685                }
 686                cptr = image;
 687                csum ^= *cptr;
 688                csum = (csum >> 24) | (csum << 8);
 689                vx_outb(chip, TXH, *cptr++);
 690                csum ^= *cptr;
 691                csum = (csum >> 24) | (csum << 8);
 692                vx_outb(chip, TXM, *cptr++);
 693                csum ^= *cptr;
 694                csum = (csum >> 24) | (csum << 8);
 695                vx_outb(chip, TXL, *cptr++);
 696        }
 697        snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum);
 698
 699        msleep(200);
 700
 701        if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
 702                return err;
 703
 704        vx_toggle_dac_mute(chip, 0);
 705
 706        vx_test_and_ack(chip);
 707        vx_validate_irq(chip, 1);
 708
 709        return 0;
 710}
 711
 712EXPORT_SYMBOL(snd_vx_dsp_load);
 713
 714#ifdef CONFIG_PM
 715/*
 716 * suspend
 717 */
 718int snd_vx_suspend(struct vx_core *chip)
 719{
 720        snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
 721        chip->chip_status |= VX_STAT_IN_SUSPEND;
 722
 723        return 0;
 724}
 725
 726EXPORT_SYMBOL(snd_vx_suspend);
 727
 728/*
 729 * resume
 730 */
 731int snd_vx_resume(struct vx_core *chip)
 732{
 733        int i, err;
 734
 735        chip->chip_status &= ~VX_STAT_CHIP_INIT;
 736
 737        for (i = 0; i < 4; i++) {
 738                if (! chip->firmware[i])
 739                        continue;
 740                err = chip->ops->load_dsp(chip, i, chip->firmware[i]);
 741                if (err < 0) {
 742                        snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i);
 743                        return -EIO;
 744                }
 745        }
 746
 747        chip->chip_status |= VX_STAT_CHIP_INIT;
 748        chip->chip_status &= ~VX_STAT_IN_SUSPEND;
 749
 750        snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
 751        return 0;
 752}
 753
 754EXPORT_SYMBOL(snd_vx_resume);
 755#endif
 756
 757/**
 758 * snd_vx_create - constructor for struct vx_core
 759 * @card: card instance
 760 * @hw: hardware specific record
 761 * @ops: VX ops pointer
 762 * @extra_size: extra byte size to allocate appending to chip
 763 *
 764 * this function allocates the instance and prepare for the hardware
 765 * initialization.
 766 *
 767 * return the instance pointer if successful, NULL in error.
 768 */
 769struct vx_core *snd_vx_create(struct snd_card *card,
 770                              const struct snd_vx_hardware *hw,
 771                              const struct snd_vx_ops *ops,
 772                              int extra_size)
 773{
 774        struct vx_core *chip;
 775
 776        if (snd_BUG_ON(!card || !hw || !ops))
 777                return NULL;
 778
 779        chip = kzalloc(sizeof(*chip) + extra_size, GFP_KERNEL);
 780        if (! chip)
 781                return NULL;
 782        mutex_init(&chip->lock);
 783        chip->irq = -1;
 784        chip->hw = hw;
 785        chip->type = hw->type;
 786        chip->ops = ops;
 787        mutex_init(&chip->mixer_mutex);
 788
 789        chip->card = card;
 790        card->private_data = chip;
 791        strcpy(card->driver, hw->name);
 792        sprintf(card->shortname, "Digigram %s", hw->name);
 793
 794        vx_proc_init(chip);
 795
 796        return chip;
 797}
 798
 799EXPORT_SYMBOL(snd_vx_create);
 800