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 <sound/core.h>
  30#include <sound/pcm.h>
  31#include <sound/asoundef.h>
  32#include <sound/info.h>
  33#include <asm/io.h>
  34#include <sound/vx_core.h>
  35#include "vx_cmd.h"
  36
  37MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
  38MODULE_DESCRIPTION("Common routines for Digigram VX drivers");
  39MODULE_LICENSE("GPL");
  40
  41
  42/*
  43 * vx_check_reg_bit - wait for the specified bit is set/reset on a register
  44 * @reg: register to check
  45 * @mask: bit mask
  46 * @bit: resultant bit to be checked
  47 * @time: time-out of loop in msec
  48 *
  49 * returns zero if a bit matches, or a negative error code.
  50 */
  51int snd_vx_check_reg_bit(struct vx_core *chip, int reg, int mask, int bit, int time)
  52{
  53        unsigned long end_time = jiffies + (time * HZ + 999) / 1000;
  54#ifdef CONFIG_SND_DEBUG
  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#endif
  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("dsp loading error at position %d\n", i);
 692                        return err;
 693                }
 694                cptr = image;
 695                csum ^= *cptr;
 696                csum = (csum >> 24) | (csum << 8);
 697                vx_outb(chip, TXH, *cptr++);
 698                csum ^= *cptr;
 699                csum = (csum >> 24) | (csum << 8);
 700                vx_outb(chip, TXM, *cptr++);
 701                csum ^= *cptr;
 702                csum = (csum >> 24) | (csum << 8);
 703                vx_outb(chip, TXL, *cptr++);
 704        }
 705        snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum);
 706
 707        msleep(200);
 708
 709        if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
 710                return err;
 711
 712        vx_toggle_dac_mute(chip, 0);
 713
 714        vx_test_and_ack(chip);
 715        vx_validate_irq(chip, 1);
 716
 717        return 0;
 718}
 719
 720EXPORT_SYMBOL(snd_vx_dsp_load);
 721
 722#ifdef CONFIG_PM
 723/*
 724 * suspend
 725 */
 726int snd_vx_suspend(struct vx_core *chip, pm_message_t state)
 727{
 728        unsigned int i;
 729
 730        snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
 731        chip->chip_status |= VX_STAT_IN_SUSPEND;
 732        for (i = 0; i < chip->hw->num_codecs; i++)
 733                snd_pcm_suspend_all(chip->pcm[i]);
 734
 735        return 0;
 736}
 737
 738EXPORT_SYMBOL(snd_vx_suspend);
 739
 740/*
 741 * resume
 742 */
 743int snd_vx_resume(struct vx_core *chip)
 744{
 745        int i, err;
 746
 747        chip->chip_status &= ~VX_STAT_CHIP_INIT;
 748
 749        for (i = 0; i < 4; i++) {
 750                if (! chip->firmware[i])
 751                        continue;
 752                err = chip->ops->load_dsp(chip, i, chip->firmware[i]);
 753                if (err < 0) {
 754                        snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i);
 755                        return -EIO;
 756                }
 757        }
 758
 759        chip->chip_status |= VX_STAT_CHIP_INIT;
 760        chip->chip_status &= ~VX_STAT_IN_SUSPEND;
 761
 762        snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
 763        return 0;
 764}
 765
 766EXPORT_SYMBOL(snd_vx_resume);
 767#endif
 768
 769/**
 770 * snd_vx_create - constructor for struct vx_core
 771 * @hw: hardware specific record
 772 *
 773 * this function allocates the instance and prepare for the hardware
 774 * initialization.
 775 *
 776 * return the instance pointer if successful, NULL in error.
 777 */
 778struct vx_core *snd_vx_create(struct snd_card *card, struct snd_vx_hardware *hw,
 779                              struct snd_vx_ops *ops,
 780                              int extra_size)
 781{
 782        struct vx_core *chip;
 783
 784        if (snd_BUG_ON(!card || !hw || !ops))
 785                return NULL;
 786
 787        chip = kzalloc(sizeof(*chip) + extra_size, GFP_KERNEL);
 788        if (! chip) {
 789                snd_printk(KERN_ERR "vx_core: no memory\n");
 790                return NULL;
 791        }
 792        spin_lock_init(&chip->lock);
 793        spin_lock_init(&chip->irq_lock);
 794        chip->irq = -1;
 795        chip->hw = hw;
 796        chip->type = hw->type;
 797        chip->ops = ops;
 798        tasklet_init(&chip->tq, vx_interrupt, (unsigned long)chip);
 799        mutex_init(&chip->mixer_mutex);
 800
 801        chip->card = card;
 802        card->private_data = chip;
 803        strcpy(card->driver, hw->name);
 804        sprintf(card->shortname, "Digigram %s", hw->name);
 805
 806        vx_proc_init(chip);
 807
 808        return chip;
 809}
 810
 811EXPORT_SYMBOL(snd_vx_create);
 812
 813/*
 814 * module entries
 815 */
 816static int __init alsa_vx_core_init(void)
 817{
 818        return 0;
 819}
 820
 821static void __exit alsa_vx_core_exit(void)
 822{
 823}
 824
 825module_init(alsa_vx_core_init)
 826module_exit(alsa_vx_core_exit)
 827