sound/pci/lola/lola.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Support for Digigram Lola PCI-e boards
   4  *
   5  *  Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
   6  */
   7
   8 #include <linux/kernel.h>
   9 #include <linux/init.h>
  10 #include <linux/module.h>
  11 #include <linux/dma-mapping.h>
  12 #include <linux/delay.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/slab.h>
  15 #include <linux/pci.h>
  16 #include <sound/core.h>
  17 #include <sound/control.h>
  18 #include <sound/pcm.h>
  19 #include <sound/initval.h>
  20 #include "lola.h"
  21
  22 /* Standard options */
  23 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  24 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  25 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  26
  27 module_param_array(index, int, NULL, 0444);
  28 MODULE_PARM_DESC(index, "Index value for Digigram Lola driver.");
  29 module_param_array(id, charp, NULL, 0444);
  30 MODULE_PARM_DESC(id, "ID string for Digigram Lola driver.");
  31 module_param_array(enable, bool, NULL, 0444);
  32 MODULE_PARM_DESC(enable, "Enable Digigram Lola driver.");
  33
  34 /* Lola-specific options */
  35
  36 /* for instance use always max granularity which is compatible
  37  * with all sample rates
  38  */
  39 static int granularity[SNDRV_CARDS] = {
  40         [0 ... (SNDRV_CARDS - 1)] = LOLA_GRANULARITY_MAX
  41 };
  42
  43 /* below a sample_rate of 16kHz the analogue audio quality is NOT excellent */
  44 static int sample_rate_min[SNDRV_CARDS] = {
  45         [0 ... (SNDRV_CARDS - 1) ] = 16000
  46 };
  47
  48 module_param_array(granularity, int, NULL, 0444);
  49 MODULE_PARM_DESC(granularity, "Granularity value");
  50 module_param_array(sample_rate_min, int, NULL, 0444);
  51 MODULE_PARM_DESC(sample_rate_min, "Minimal sample rate");
  52
  53 /*
  54  */
  55
  56 MODULE_LICENSE("GPL");
  57 MODULE_DESCRIPTION("Digigram Lola driver");
  58 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
  59
  60 #ifdef CONFIG_SND_DEBUG_VERBOSE
  61 static int debug;
  62 module_param(debug, int, 0644);
  63 #define verbose_debug(fmt, args...)                     \
  64         do { if (debug > 1) pr_debug(SFX fmt, ##args); } while (0)
  65 #else
  66 #define verbose_debug(fmt, args...)
  67 #endif
  68
  69 /*
  70  * pseudo-codec read/write via CORB/RIRB
  71  */
  72
  73 static int corb_send_verb(struct lola *chip, unsigned int nid,
  74                           unsigned int verb, unsigned int data,
  75                           unsigned int extdata)
  76 {
  77         unsigned long flags;
  78         int ret = -EIO;
  79
  80         chip->last_cmd_nid = nid;
  81         chip->last_verb = verb;
  82         chip->last_data = data;
  83         chip->last_extdata = extdata;
  84         data |= (nid << 20) | (verb << 8);
  85
  86         spin_lock_irqsave(&chip->reg_lock, flags);
  87         if (chip->rirb.cmds < LOLA_CORB_ENTRIES - 1) {
  88                 unsigned int wp = chip->corb.wp + 1;
  89                 wp %= LOLA_CORB_ENTRIES;
  90                 chip->corb.wp = wp;
  91                 chip->corb.buf[wp * 2] = cpu_to_le32(data);
  92                 chip->corb.buf[wp * 2 + 1] = cpu_to_le32(extdata);
  93                 lola_writew(chip, BAR0, CORBWP, wp);
  94                 chip->rirb.cmds++;
  95                 smp_wmb();
  96                 ret = 0;
  97         }
  98         spin_unlock_irqrestore(&chip->reg_lock, flags);
  99         return ret;
 100 }
 101
 102 static void lola_queue_unsol_event(struct lola *chip, unsigned int res,
 103                                    unsigned int res_ex)
 104 {
 105         lola_update_ext_clock_freq(chip, res);
 106 }
 107
 108 /* retrieve RIRB entry - called from interrupt handler */
 109 static void lola_update_rirb(struct lola *chip)
 110 {
 111         unsigned int rp, wp;
 112         u32 res, res_ex;
 113
 114         wp = lola_readw(chip, BAR0, RIRBWP);
 115         if (wp == chip->rirb.wp)
 116                 return;
 117         chip->rirb.wp = wp;
 118
 119         while (chip->rirb.rp != wp) {
 120                 chip->rirb.rp++;
 121                 chip->rirb.rp %= LOLA_CORB_ENTRIES;
 122
 123                 rp = chip->rirb.rp << 1; /* an RIRB entry is 8-bytes */
 124                 res_ex = le32_to_cpu(chip->rirb.buf[rp + 1]);
 125                 res = le32_to_cpu(chip->rirb.buf[rp]);
 126                 if (res_ex & LOLA_RIRB_EX_UNSOL_EV)
 127                         lola_queue_unsol_event(chip, res, res_ex);
 128                 else if (chip->rirb.cmds) {
 129                         chip->res = res;
 130                         chip->res_ex = res_ex;
 131                         smp_wmb();
 132                         chip->rirb.cmds--;
 133                 }
 134         }
 135 }
 136
 137 static int rirb_get_response(struct lola *chip, unsigned int *val,
 138                              unsigned int *extval)
 139 {
 140         unsigned long timeout;
 141
 142  again:
 143         timeout = jiffies + msecs_to_jiffies(1000);
 144         for (;;) {
 145                 if (chip->polling_mode) {
 146                         spin_lock_irq(&chip->reg_lock);
 147                         lola_update_rirb(chip);
 148                         spin_unlock_irq(&chip->reg_lock);
 149                 }
 150                 if (!chip->rirb.cmds) {
 151                         *val = chip->res;
 152                         if (extval)
 153                                 *extval = chip->res_ex;
 154                         verbose_debug("get_response: %x, %x\n",
 155                                       chip->res, chip->res_ex);
 156                         if (chip->res_ex & LOLA_RIRB_EX_ERROR) {
 157                                 dev_warn(chip->card->dev, "RIRB ERROR: "
 158                                        "NID=%x, verb=%x, data=%x, ext=%x\n",
 159                                        chip->last_cmd_nid,
 160                                        chip->last_verb, chip->last_data,
 161                                        chip->last_extdata);
 162                                 return -EIO;
 163                         }
 164                         return 0;
 165                 }
 166                 if (time_after(jiffies, timeout))
 167                         break;
 168                 udelay(20);
 169                 cond_resched();
 170         }
 171         dev_warn(chip->card->dev, "RIRB response error\n");
 172         if (!chip->polling_mode) {
 173                 dev_warn(chip->card->dev, "switching to polling mode\n");
 174                 chip->polling_mode = 1;
 175                 goto again;
 176         }
 177         return -EIO;
 178 }
 179
 180 /* aynchronous write of a codec verb with data */
 181 int lola_codec_write(struct lola *chip, unsigned int nid, unsigned int verb,
 182                      unsigned int data, unsigned int extdata)
 183 {
 184         verbose_debug("codec_write NID=%x, verb=%x, data=%x, ext=%x\n",
 185                       nid, verb, data, extdata);
 186         return corb_send_verb(chip, nid, verb, data, extdata);
 187 }
 188
 189 /* write a codec verb with data and read the returned status */
 190 int lola_codec_read(struct lola *chip, unsigned int nid, unsigned int verb,
 191                     unsigned int data, unsigned int extdata,
 192                     unsigned int *val, unsigned int *extval)
 193 {
 194         int err;
 195
 196         verbose_debug("codec_read NID=%x, verb=%x, data=%x, ext=%x\n",
 197                       nid, verb, data, extdata);
 198         err = corb_send_verb(chip, nid, verb, data, extdata);
 199         if (err < 0)
 200                 return err;
 201         err = rirb_get_response(chip, val, extval);
 202         return err;
 203 }
 204
 205 /* flush all pending codec writes */
 206 int lola_codec_flush(struct lola *chip)
 207 {
 208         unsigned int tmp;
 209         return rirb_get_response(chip, &tmp, NULL);
 210 }
 211
 212 /*
 213  * interrupt handler
 214  */
 215 static irqreturn_t lola_interrupt(int irq, void *dev_id)
 216 {
 217         struct lola *chip = dev_id;
 218         unsigned int notify_ins, notify_outs, error_ins, error_outs;
 219         int handled = 0;
 220         int i;
 221
 222         notify_ins = notify_outs = error_ins = error_outs = 0;
 223         spin_lock(&chip->reg_lock);
 224         for (;;) {
 225                 unsigned int status, in_sts, out_sts;
 226                 unsigned int reg;
 227
 228                 status = lola_readl(chip, BAR1, DINTSTS);
 229                 if (!status || status == -1)
 230                         break;
 231
 232                 in_sts = lola_readl(chip, BAR1, DIINTSTS);
 233                 out_sts = lola_readl(chip, BAR1, DOINTSTS);
 234
 235                 /* clear Input Interrupts */
 236                 for (i = 0; in_sts && i < chip->pcm[CAPT].num_streams; i++) {
 237                         if (!(in_sts & (1 << i)))
 238                                 continue;
 239                         in_sts &= ~(1 << i);
 240                         reg = lola_dsd_read(chip, i, STS);
 241                         if (reg & LOLA_DSD_STS_DESE) /* error */
 242                                 error_ins |= (1 << i);
 243                         if (reg & LOLA_DSD_STS_BCIS) /* notify */
 244                                 notify_ins |= (1 << i);
 245                         /* clear */
 246                         lola_dsd_write(chip, i, STS, reg);
 247                 }
 248
 249                 /* clear Output Interrupts */
 250                 for (i = 0; out_sts && i < chip->pcm[PLAY].num_streams; i++) {
 251                         if (!(out_sts & (1 << i)))
 252                                 continue;
 253                         out_sts &= ~(1 << i);
 254                         reg = lola_dsd_read(chip, i + MAX_STREAM_IN_COUNT, STS);
 255                         if (reg & LOLA_DSD_STS_DESE) /* error */
 256                                 error_outs |= (1 << i);
 257                         if (reg & LOLA_DSD_STS_BCIS) /* notify */
 258                                 notify_outs |= (1 << i);
 259                         lola_dsd_write(chip, i + MAX_STREAM_IN_COUNT, STS, reg);
 260                 }
 261
 262                 if (status & LOLA_DINT_CTRL) {
 263                         unsigned char rbsts; /* ring status is byte access */
 264                         rbsts = lola_readb(chip, BAR0, RIRBSTS);
 265                         rbsts &= LOLA_RIRB_INT_MASK;
 266                         if (rbsts)
 267                                 lola_writeb(chip, BAR0, RIRBSTS, rbsts);
 268                         rbsts = lola_readb(chip, BAR0, CORBSTS);
 269                         rbsts &= LOLA_CORB_INT_MASK;
 270                         if (rbsts)
 271                                 lola_writeb(chip, BAR0, CORBSTS, rbsts);
 272
 273                         lola_update_rirb(chip);
 274                 }
 275
 276                 if (status & (LOLA_DINT_FIFOERR | LOLA_DINT_MUERR)) {
 277                         /* clear global fifo error interrupt */
 278                         lola_writel(chip, BAR1, DINTSTS,
 279                                     (status & (LOLA_DINT_FIFOERR | LOLA_DINT_MUERR)));
 280                 }
 281                 handled = 1;
 282         }
 283         spin_unlock(&chip->reg_lock);
 284
 285         lola_pcm_update(chip, &chip->pcm[CAPT], notify_ins);
 286         lola_pcm_update(chip, &chip->pcm[PLAY], notify_outs);
 287
 288         return IRQ_RETVAL(handled);
 289 }
 290
 291
 292 /*
 293  * controller
 294  */
 295 static int reset_controller(struct lola *chip)
 296 {
 297         unsigned int gctl = lola_readl(chip, BAR0, GCTL);
 298         unsigned long end_time;
 299
 300         if (gctl) {
 301                 /* to be sure */
 302                 lola_writel(chip, BAR1, BOARD_MODE, 0);
 303                 return 0;
 304         }
 305
 306         chip->cold_reset = 1;
 307         lola_writel(chip, BAR0, GCTL, LOLA_GCTL_RESET);
 308         end_time = jiffies + msecs_to_jiffies(200);
 309         do {
 310                 msleep(1);
 311                 gctl = lola_readl(chip, BAR0, GCTL);
 312                 if (gctl)
 313                         break;
 314         } while (time_before(jiffies, end_time));
 315         if (!gctl) {
 316                 dev_err(chip->card->dev, "cannot reset controller\n");
 317                 return -EIO;
 318         }
 319         return 0;
 320 }
 321
 322 static void lola_irq_enable(struct lola *chip)
 323 {
 324         unsigned int val;
 325
 326         /* enalbe all I/O streams */
 327         val = (1 << chip->pcm[PLAY].num_streams) - 1;
 328         lola_writel(chip, BAR1, DOINTCTL, val);
 329         val = (1 << chip->pcm[CAPT].num_streams) - 1;
 330         lola_writel(chip, BAR1, DIINTCTL, val);
 331
 332         /* enable global irqs */
 333         val = LOLA_DINT_GLOBAL | LOLA_DINT_CTRL | LOLA_DINT_FIFOERR |
 334                 LOLA_DINT_MUERR;
 335         lola_writel(chip, BAR1, DINTCTL, val);
 336 }
 337
 338 static void lola_irq_disable(struct lola *chip)
 339 {
 340         lola_writel(chip, BAR1, DINTCTL, 0);
 341         lola_writel(chip, BAR1, DIINTCTL, 0);
 342         lola_writel(chip, BAR1, DOINTCTL, 0);
 343 }
 344
 345 static int setup_corb_rirb(struct lola *chip)
 346 {
 347         unsigned char tmp;
 348         unsigned long end_time;
 349
 350         chip->rb = snd_devm_alloc_pages(&chip->pci->dev, SNDRV_DMA_TYPE_DEV,
 351                                         PAGE_SIZE);
 352         if (!chip->rb)
 353                 return -ENOMEM;
 354
 355         chip->corb.addr = chip->rb->addr;
 356         chip->corb.buf = (__le32 *)chip->rb->area;
 357         chip->rirb.addr = chip->rb->addr + 2048;
 358         chip->rirb.buf = (__le32 *)(chip->rb->area + 2048);
 359
 360         /* disable ringbuffer DMAs */
 361         lola_writeb(chip, BAR0, RIRBCTL, 0);
 362         lola_writeb(chip, BAR0, CORBCTL, 0);
 363
 364         end_time = jiffies + msecs_to_jiffies(200);
 365         do {
 366                 if (!lola_readb(chip, BAR0, RIRBCTL) &&
 367                     !lola_readb(chip, BAR0, CORBCTL))
 368                         break;
 369                 msleep(1);
 370         } while (time_before(jiffies, end_time));
 371
 372         /* CORB set up */
 373         lola_writel(chip, BAR0, CORBLBASE, (u32)chip->corb.addr);
 374         lola_writel(chip, BAR0, CORBUBASE, upper_32_bits(chip->corb.addr));
 375         /* set the corb size to 256 entries */
 376         lola_writeb(chip, BAR0, CORBSIZE, 0x02);
 377         /* set the corb write pointer to 0 */
 378         lola_writew(chip, BAR0, CORBWP, 0);
 379         /* reset the corb hw read pointer */
 380         lola_writew(chip, BAR0, CORBRP, LOLA_RBRWP_CLR);
 381         /* enable corb dma */
 382         lola_writeb(chip, BAR0, CORBCTL, LOLA_RBCTL_DMA_EN);
 383         /* clear flags if set */
 384         tmp = lola_readb(chip, BAR0, CORBSTS) & LOLA_CORB_INT_MASK;
 385         if (tmp)
 386                 lola_writeb(chip, BAR0, CORBSTS, tmp);
 387         chip->corb.wp = 0;
 388
 389         /* RIRB set up */
 390         lola_writel(chip, BAR0, RIRBLBASE, (u32)chip->rirb.addr);
 391         lola_writel(chip, BAR0, RIRBUBASE, upper_32_bits(chip->rirb.addr));
 392         /* set the rirb size to 256 entries */
 393         lola_writeb(chip, BAR0, RIRBSIZE, 0x02);
 394         /* reset the rirb hw write pointer */
 395         lola_writew(chip, BAR0, RIRBWP, LOLA_RBRWP_CLR);
 396         /* set N=1, get RIRB response interrupt for new entry */
 397         lola_writew(chip, BAR0, RINTCNT, 1);
 398         /* enable rirb dma and response irq */
 399         lola_writeb(chip, BAR0, RIRBCTL, LOLA_RBCTL_DMA_EN | LOLA_RBCTL_IRQ_EN);
 400         /* clear flags if set */
 401         tmp =  lola_readb(chip, BAR0, RIRBSTS) & LOLA_RIRB_INT_MASK;
 402         if (tmp)
 403                 lola_writeb(chip, BAR0, RIRBSTS, tmp);
 404         chip->rirb.rp = chip->rirb.cmds = 0;
 405
 406         return 0;
 407 }
 408
 409 static void stop_corb_rirb(struct lola *chip)
 410 {
 411         /* disable ringbuffer DMAs */
 412         lola_writeb(chip, BAR0, RIRBCTL, 0);
 413         lola_writeb(chip, BAR0, CORBCTL, 0);
 414 }
 415
 416 static void lola_reset_setups(struct lola *chip)
 417 {
 418         /* update the granularity */
 419         lola_set_granularity(chip, chip->granularity, true);
 420         /* update the sample clock */
 421         lola_set_clock_index(chip, chip->clock.cur_index);
 422         /* enable unsolicited events of the clock widget */
 423         lola_enable_clock_events(chip);
 424         /* update the analog gains */
 425         lola_setup_all_analog_gains(chip, CAPT, false); /* input, update */
 426         /* update SRC configuration if applicable */
 427         lola_set_src_config(chip, chip->input_src_mask, false);
 428         /* update the analog outputs */
 429         lola_setup_all_analog_gains(chip, PLAY, false); /* output, update */
 430 }
 431
 432 static int lola_parse_tree(struct lola *chip)
 433 {
 434         unsigned int val;
 435         int nid, err;
 436
 437         err = lola_read_param(chip, 0, LOLA_PAR_VENDOR_ID, &val);
 438         if (err < 0) {
 439                 dev_err(chip->card->dev, "Can't read VENDOR_ID\n");
 440                 return err;
 441         }
 442         val >>= 16;
 443         if (val != 0x1369) {
 444                 dev_err(chip->card->dev, "Unknown codec vendor 0x%x\n", val);
 445                 return -EINVAL;
 446         }
 447
 448         err = lola_read_param(chip, 1, LOLA_PAR_FUNCTION_TYPE, &val);
 449         if (err < 0) {
 450                 dev_err(chip->card->dev, "Can't read FUNCTION_TYPE\n");
 451                 return err;
 452         }
 453         if (val != 1) {
 454                 dev_err(chip->card->dev, "Unknown function type %d\n", val);
 455                 return -EINVAL;
 456         }
 457
 458         err = lola_read_param(chip, 1, LOLA_PAR_SPECIFIC_CAPS, &val);
 459         if (err < 0) {
 460                 dev_err(chip->card->dev, "Can't read SPECCAPS\n");
 461                 return err;
 462         }
 463         chip->lola_caps = val;
 464         chip->pin[CAPT].num_pins = LOLA_AFG_INPUT_PIN_COUNT(chip->lola_caps);
 465         chip->pin[PLAY].num_pins = LOLA_AFG_OUTPUT_PIN_COUNT(chip->lola_caps);
 466         dev_dbg(chip->card->dev, "speccaps=0x%x, pins in=%d, out=%d\n",
 467                     chip->lola_caps,
 468                     chip->pin[CAPT].num_pins, chip->pin[PLAY].num_pins);
 469
 470         if (chip->pin[CAPT].num_pins > MAX_AUDIO_INOUT_COUNT ||
 471             chip->pin[PLAY].num_pins > MAX_AUDIO_INOUT_COUNT) {
 472                 dev_err(chip->card->dev, "Invalid Lola-spec caps 0x%x\n", val);
 473                 return -EINVAL;
 474         }
 475
 476         nid = 0x02;
 477         err = lola_init_pcm(chip, CAPT, &nid);
 478         if (err < 0)
 479                 return err;
 480         err = lola_init_pcm(chip, PLAY, &nid);
 481         if (err < 0)
 482                 return err;
 483
 484         err = lola_init_pins(chip, CAPT, &nid);
 485         if (err < 0)
 486                 return err;
 487         err = lola_init_pins(chip, PLAY, &nid);
 488         if (err < 0)
 489                 return err;
 490
 491         if (LOLA_AFG_CLOCK_WIDGET_PRESENT(chip->lola_caps)) {
 492                 err = lola_init_clock_widget(chip, nid);
 493                 if (err < 0)
 494                         return err;
 495                 nid++;
 496         }
 497         if (LOLA_AFG_MIXER_WIDGET_PRESENT(chip->lola_caps)) {
 498                 err = lola_init_mixer_widget(chip, nid);
 499                 if (err < 0)
 500                         return err;
 501                 nid++;
 502         }
 503
 504         /* enable unsolicited events of the clock widget */
 505         err = lola_enable_clock_events(chip);
 506         if (err < 0)
 507                 return err;
 508
 509         /* if last ResetController was not a ColdReset, we don't know
 510          * the state of the card; initialize here again
 511          */
 512         if (!chip->cold_reset) {
 513                 lola_reset_setups(chip);
 514                 chip->cold_reset = 1;
 515         } else {
 516                 /* set the granularity if it is not the default */
 517                 if (chip->granularity != LOLA_GRANULARITY_MIN)
 518                         lola_set_granularity(chip, chip->granularity, true);
 519         }
 520
 521         return 0;
 522 }
 523
 524 static void lola_stop_hw(struct lola *chip)
 525 {
 526         stop_corb_rirb(chip);
 527         lola_irq_disable(chip);
 528 }
 529
 530 static void lola_free(struct snd_card *card)
 531 {
 532         struct lola *chip = card->private_data;
 533
 534         if (chip->initialized)
 535                 lola_stop_hw(chip);
 536         lola_free_mixer(chip);
 537 }
 538
 539 static int lola_create(struct snd_card *card, struct pci_dev *pci, int dev)
 540 {
 541         struct lola *chip = card->private_data;
 542         int err;
 543         unsigned int dever;
 544
 545         err = pcim_enable_device(pci);
 546         if (err < 0)
 547                 return err;
 548
 549         spin_lock_init(&chip->reg_lock);
 550         mutex_init(&chip->open_mutex);
 551         chip->card = card;
 552         chip->pci = pci;
 553         chip->irq = -1;
 554         card->private_free = lola_free;
 555
 556         chip->granularity = granularity[dev];
 557         switch (chip->granularity) {
 558         case 8:
 559                 chip->sample_rate_max = 48000;
 560                 break;
 561         case 16:
 562                 chip->sample_rate_max = 96000;
 563                 break;
 564         case 32:
 565                 chip->sample_rate_max = 192000;
 566                 break;
 567         default:
 568                 dev_warn(chip->card->dev,
 569                            "Invalid granularity %d, reset to %d\n",
 570                            chip->granularity, LOLA_GRANULARITY_MAX);
 571                 chip->granularity = LOLA_GRANULARITY_MAX;
 572                 chip->sample_rate_max = 192000;
 573                 break;
 574         }
 575         chip->sample_rate_min = sample_rate_min[dev];
 576         if (chip->sample_rate_min > chip->sample_rate_max) {
 577                 dev_warn(chip->card->dev,
 578                            "Invalid sample_rate_min %d, reset to 16000\n",
 579                            chip->sample_rate_min);
 580                 chip->sample_rate_min = 16000;
 581         }
 582
 583         err = pcim_iomap_regions(pci, (1 << 0) | (1 << 2), DRVNAME);
 584         if (err < 0)
 585                 return err;
 586
 587         chip->bar[0].addr = pci_resource_start(pci, 0);
 588         chip->bar[0].remap_addr = pcim_iomap_table(pci)[0];
 589         chip->bar[1].addr = pci_resource_start(pci, 2);
 590         chip->bar[1].remap_addr = pcim_iomap_table(pci)[2];
 591
 592         pci_set_master(pci);
 593
 594         err = reset_controller(chip);
 595         if (err < 0)
 596                 return err;
 597
 598         if (devm_request_irq(&pci->dev, pci->irq, lola_interrupt, IRQF_SHARED,
 599                              KBUILD_MODNAME, chip)) {
 600                 dev_err(chip->card->dev, "unable to grab IRQ %d\n", pci->irq);
 601                 return -EBUSY;
 602         }
 603         chip->irq = pci->irq;
 604         card->sync_irq = chip->irq;
 605
 606         dever = lola_readl(chip, BAR1, DEVER);
 607         chip->pcm[CAPT].num_streams = (dever >> 0) & 0x3ff;
 608         chip->pcm[PLAY].num_streams = (dever >> 10) & 0x3ff;
 609         chip->version = (dever >> 24) & 0xff;
 610         dev_dbg(chip->card->dev, "streams in=%d, out=%d, version=0x%x\n",
 611                     chip->pcm[CAPT].num_streams, chip->pcm[PLAY].num_streams,
 612                     chip->version);
 613
 614         /* Test LOLA_BAR1_DEVER */
 615         if (chip->pcm[CAPT].num_streams > MAX_STREAM_IN_COUNT ||
 616             chip->pcm[PLAY].num_streams > MAX_STREAM_OUT_COUNT ||
 617             (!chip->pcm[CAPT].num_streams &&
 618              !chip->pcm[PLAY].num_streams)) {
 619                 dev_err(chip->card->dev, "invalid DEVER = %x\n", dever);
 620                 return -EINVAL;
 621         }
 622
 623         err = setup_corb_rirb(chip);
 624         if (err < 0)
 625                 return err;
 626
 627         strcpy(card->driver, "Lola");
 628         strscpy(card->shortname, "Digigram Lola", sizeof(card->shortname));
 629         snprintf(card->longname, sizeof(card->longname),
 630                  "%s at 0x%lx irq %i",
 631                  card->shortname, chip->bar[0].addr, chip->irq);
 632         strcpy(card->mixername, card->shortname);
 633
 634         lola_irq_enable(chip);
 635
 636         chip->initialized = 1;
 637         return 0;
 638 }
 639
 640 static int __lola_probe(struct pci_dev *pci,
 641                         const struct pci_device_id *pci_id)
 642 {
 643         static int dev;
 644         struct snd_card *card;
 645         struct lola *chip;
 646         int err;
 647
 648         if (dev >= SNDRV_CARDS)
 649                 return -ENODEV;
 650         if (!enable[dev]) {
 651                 dev++;
 652                 return -ENOENT;
 653         }
 654
 655         err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 656                                 sizeof(*chip), &card);
 657         if (err < 0) {
 658                 dev_err(&pci->dev, "Error creating card!\n");
 659                 return err;
 660         }
 661         chip = card->private_data;
 662
 663         err = lola_create(card, pci, dev);
 664         if (err < 0)
 665                 return err;
 666
 667         err = lola_parse_tree(chip);
 668         if (err < 0)
 669                 return err;
 670
 671         err = lola_create_pcm(chip);
 672         if (err < 0)
 673                 return err;
 674
 675         err = lola_create_mixer(chip);
 676         if (err < 0)
 677                 return err;
 678
 679         lola_proc_debug_new(chip);
 680
 681         err = snd_card_register(card);
 682         if (err < 0)
 683                 return err;
 684
 685         pci_set_drvdata(pci, card);
 686         dev++;
 687         return 0;
 688 }
 689
 690 static int lola_probe(struct pci_dev *pci,
 691                       const struct pci_device_id *pci_id)
 692 {
 693         return snd_card_free_on_error(&pci->dev, __lola_probe(pci, pci_id));
 694 }
 695
 696 /* PCI IDs */
 697 static const struct pci_device_id lola_ids[] = {
 698         { PCI_VDEVICE(DIGIGRAM, 0x0001) },
 699         { 0, }
 700 };
 701 MODULE_DEVICE_TABLE(pci, lola_ids);
 702
 703 /* pci_driver definition */
 704 static struct pci_driver lola_driver = {
 705         .name = KBUILD_MODNAME,
 706         .id_table = lola_ids,
 707         .probe = lola_probe,
 708 };
 709
 710 module_pci_driver(lola_driver);