1 /* 2 * Low-level ALSA driver for the ENSONIQ SoundScape PnP 3 * Copyright (c) by Chris Rankin 4 * 5 * This driver was written in part using information obtained from 6 * the OSS/Free SoundScape driver, written by Hannu Savolainen. 7 * 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 */ 23 24 #include <sound/driver.h> 25 #include <linux/init.h> 26 #include <linux/err.h> 27 #include <linux/platform_device.h> 28 #include <linux/delay.h> 29 #include <linux/pnp.h> 30 #include <linux/spinlock.h> 31 #include <linux/moduleparam.h> 32 #include <asm/dma.h> 33 #include <sound/core.h> 34 #include <sound/hwdep.h> 35 #include <sound/cs4231.h> 36 #include <sound/mpu401.h> 37 #include <sound/initval.h> 38 39 #include <sound/sscape_ioctl.h> 40 41 42 MODULE_AUTHOR("Chris Rankin"); 43 MODULE_DESCRIPTION("ENSONIQ SoundScape PnP driver"); 44 MODULE_LICENSE("GPL"); 45 46 static int index[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_IDX; 47 static char* id[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_STR; 48 static long port[SNDRV_CARDS] __devinitdata = { [0 ... (SNDRV_CARDS-1)] = SNDRV_AUTO_PORT }; 49 static int irq[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_IRQ; 50 static int mpu_irq[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_IRQ; 51 static int dma[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_DMA; 52 53 module_param_array(index, int, NULL, 0444); 54 MODULE_PARM_DESC(index, "Index number for SoundScape soundcard"); 55 56 module_param_array(id, charp, NULL, 0444); 57 MODULE_PARM_DESC(id, "Description for SoundScape card"); 58 59 module_param_array(port, long, NULL, 0444); 60 MODULE_PARM_DESC(port, "Port # for SoundScape driver."); 61 62 module_param_array(irq, int, NULL, 0444); 63 MODULE_PARM_DESC(irq, "IRQ # for SoundScape driver."); 64 65 module_param_array(mpu_irq, int, NULL, 0444); 66 MODULE_PARM_DESC(mpu_irq, "MPU401 IRQ # for SoundScape driver."); 67 68 module_param_array(dma, int, NULL, 0444); 69 MODULE_PARM_DESC(dma, "DMA # for SoundScape driver."); 70 71 static struct platform_device *platform_devices[SNDRV_CARDS]; 72 static int pnp_registered; 73 74 #ifdef CONFIG_PNP 75 static struct pnp_card_device_id sscape_pnpids[] = { 76 { .id = "ENS3081", .devs = { { "ENS0000" } } }, 77 { .id = "" } /* end */ 78 }; 79 80 MODULE_DEVICE_TABLE(pnp_card, sscape_pnpids); 81 #endif 82 83 84 #define MPU401_IO(i) ((i) + 0) 85 #define MIDI_DATA_IO(i) ((i) + 0) 86 #define MIDI_CTRL_IO(i) ((i) + 1) 87 #define HOST_CTRL_IO(i) ((i) + 2) 88 #define HOST_DATA_IO(i) ((i) + 3) 89 #define ODIE_ADDR_IO(i) ((i) + 4) 90 #define ODIE_DATA_IO(i) ((i) + 5) 91 #define CODEC_IO(i) ((i) + 8) 92 93 #define IC_ODIE 1 94 #define IC_OPUS 2 95 96 #define RX_READY 0x01 97 #define TX_READY 0x02 98 99 #define CMD_ACK 0x80 100 #define CMD_SET_MIDI_VOL 0x84 101 #define CMD_GET_MIDI_VOL 0x85 102 #define CMD_XXX_MIDI_VOL 0x86 103 #define CMD_SET_EXTMIDI 0x8a 104 #define CMD_GET_EXTMIDI 0x8b 105 #define CMD_SET_MT32 0x8c 106 #define CMD_GET_MT32 0x8d 107 108 enum GA_REG { 109 GA_INTSTAT_REG = 0, 110 GA_INTENA_REG, 111 GA_DMAA_REG, 112 GA_DMAB_REG, 113 GA_INTCFG_REG, 114 GA_DMACFG_REG, 115 GA_CDCFG_REG, 116 GA_SMCFGA_REG, 117 GA_SMCFGB_REG, 118 GA_HMCTL_REG 119 }; 120 121 #define DMA_8BIT 0x80 122 123 124 #define AD1845_FREQ_SEL_MSB 0x16 125 #define AD1845_FREQ_SEL_LSB 0x17 126 127 struct soundscape { 128 spinlock_t lock; 129 unsigned io_base; 130 int codec_type; 131 int ic_type; 132 struct resource *io_res; 133 struct snd_cs4231 *chip; 134 struct snd_mpu401 *mpu; 135 struct snd_hwdep *hw; 136 137 /* 138 * The MIDI device won't work until we've loaded 139 * its firmware via a hardware-dependent device IOCTL 140 */ 141 spinlock_t fwlock; 142 int hw_in_use; 143 unsigned long midi_usage; 144 unsigned char midi_vol; 145 }; 146 147 #define INVALID_IRQ ((unsigned)-1) 148 149 150 static inline struct soundscape *get_card_soundscape(struct snd_card *c) 151 { 152 return (struct soundscape *) (c->private_data); 153 } 154 155 static inline struct soundscape *get_mpu401_soundscape(struct snd_mpu401 * mpu) 156 { 157 return (struct soundscape *) (mpu->private_data); 158 } 159 160 static inline struct soundscape *get_hwdep_soundscape(struct snd_hwdep * hw) 161 { 162 return (struct soundscape *) (hw->private_data); 163 } 164 165 166 /* 167 * Allocates some kernel memory that we can use for DMA. 168 * I think this means that the memory has to map to 169 * contiguous pages of physical memory. 170 */ 171 static struct snd_dma_buffer *get_dmabuf(struct snd_dma_buffer *buf, unsigned long size) 172 { 173 if (buf) { 174 if (snd_dma_alloc_pages_fallback(SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(), 175 size, buf) < 0) { 176 snd_printk(KERN_ERR "sscape: Failed to allocate %lu bytes for DMA\n", size); 177 return NULL; 178 } 179 } 180 181 return buf; 182 } 183 184 /* 185 * Release the DMA-able kernel memory ... 186 */ 187 static void free_dmabuf(struct snd_dma_buffer *buf) 188 { 189 if (buf && buf->area) 190 snd_dma_free_pages(buf); 191 } 192 193 194 /* 195 * This function writes to the SoundScape's control registers, 196 * but doesn't do any locking. It's up to the caller to do that. 197 * This is why this function is "unsafe" ... 198 */ 199 static inline void sscape_write_unsafe(unsigned io_base, enum GA_REG reg, unsigned char val) 200 { 201 outb(reg, ODIE_ADDR_IO(io_base)); 202 outb(val, ODIE_DATA_IO(io_base)); 203 } 204 205 /* 206 * Write to the SoundScape's control registers, and do the 207 * necessary locking ... 208 */ 209 static void sscape_write(struct soundscape *s, enum GA_REG reg, unsigned char val) 210 { 211 unsigned long flags; 212 213 spin_lock_irqsave(&s->lock, flags); 214 sscape_write_unsafe(s->io_base, reg, val); 215 spin_unlock_irqrestore(&s->lock, flags); 216 } 217 218 /* 219 * Read from the SoundScape's control registers, but leave any 220 * locking to the caller. This is why the function is "unsafe" ... 221 */ 222 static inline unsigned char sscape_read_unsafe(unsigned io_base, enum GA_REG reg) 223 { 224 outb(reg, ODIE_ADDR_IO(io_base)); 225 return inb(ODIE_DATA_IO(io_base)); 226 } 227 228 /* 229 * Puts the SoundScape into "host" mode, as compared to "MIDI" mode 230 */ 231 static inline void set_host_mode_unsafe(unsigned io_base) 232 { 233 outb(0x0, HOST_CTRL_IO(io_base)); 234 } 235 236 /* 237 * Puts the SoundScape into "MIDI" mode, as compared to "host" mode 238 */ 239 static inline void set_midi_mode_unsafe(unsigned io_base) 240 { 241 outb(0x3, HOST_CTRL_IO(io_base)); 242 } 243 244 /* 245 * Read the SoundScape's host-mode control register, but leave 246 * any locking issues to the caller ... 247 */ 248 static inline int host_read_unsafe(unsigned io_base) 249 { 250 int data = -1; 251 if ((inb(HOST_CTRL_IO(io_base)) & RX_READY) != 0) { 252 data = inb(HOST_DATA_IO(io_base)); 253 } 254 255 return data; 256 } 257 258 /* 259 * Read the SoundScape's host-mode control register, performing 260 * a limited amount of busy-waiting if the register isn't ready. 261 * Also leaves all locking-issues to the caller ... 262 */ 263 static int host_read_ctrl_unsafe(unsigned io_base, unsigned timeout) 264 { 265 int data; 266 267 while (((data = host_read_unsafe(io_base)) < 0) && (timeout != 0)) { 268 udelay(100); 269 --timeout; 270 } /* while */ 271 272 return data; 273 } 274 275 /* 276 * Write to the SoundScape's host-mode control registers, but 277 * leave any locking issues to the caller ... 278 */ 279 static inline int host_write_unsafe(unsigned io_base, unsigned char data) 280 { 281 if ((inb(HOST_CTRL_IO(io_base)) & TX_READY) != 0) { 282 outb(data, HOST_DATA_IO(io_base)); 283 return 1; 284 } 285 286 return 0; 287 } 288 289 /* 290 * Write to the SoundScape's host-mode control registers, performing 291 * a limited amount of busy-waiting if the register isn't ready. 292 * Also leaves all locking-issues to the caller ... 293 */ 294 static int host_write_ctrl_unsafe(unsigned io_base, unsigned char data, 295 unsigned timeout) 296 { 297 int err; 298 299 while (!(err = host_write_unsafe(io_base, data)) && (timeout != 0)) { 300 udelay(100); 301 --timeout; 302 } /* while */ 303 304 return err; 305 } 306 307 308 /* 309 * Check that the MIDI subsystem is operational. If it isn't, 310 * then we will hang the computer if we try to use it ... 311 * 312 * NOTE: This check is based upon observation, not documentation. 313 */ 314 static inline int verify_mpu401(const struct snd_mpu401 * mpu) 315 { 316 return ((inb(MIDI_CTRL_IO(mpu->port)) & 0xc0) == 0x80); 317 } 318 319 /* 320 * This is apparently the standard way to initailise an MPU-401 321 */ 322 static inline void initialise_mpu401(const struct snd_mpu401 * mpu) 323 { 324 outb(0, MIDI_DATA_IO(mpu->port)); 325 } 326 327 /* 328 * Tell the SoundScape to activate the AD1845 chip (I think). 329 * The AD1845 detection fails if we *don't* do this, so I 330 * think that this is a good idea ... 331 */ 332 static inline void activate_ad1845_unsafe(unsigned io_base) 333 { 334 sscape_write_unsafe(io_base, GA_HMCTL_REG, (sscape_read_unsafe(io_base, GA_HMCTL_REG) & 0xcf) | 0x10); 335 sscape_write_unsafe(io_base, GA_CDCFG_REG, 0x80); 336 } 337 338 /* 339 * Do the necessary ALSA-level cleanup to deallocate our driver ... 340 */ 341 static void soundscape_free(struct snd_card *c) 342 { 343 register struct soundscape *sscape = get_card_soundscape(c); 344 release_and_free_resource(sscape->io_res); 345 free_dma(sscape->chip->dma1); 346 } 347 348 /* 349 * Tell the SoundScape to begin a DMA tranfer using the given channel. 350 * All locking issues are left to the caller. 351 */ 352 static inline void sscape_start_dma_unsafe(unsigned io_base, enum GA_REG reg) 353 { 354 sscape_write_unsafe(io_base, reg, sscape_read_unsafe(io_base, reg) | 0x01); 355 sscape_write_unsafe(io_base, reg, sscape_read_unsafe(io_base, reg) & 0xfe); 356 } 357 358 /* 359 * Wait for a DMA transfer to complete. This is a "limited busy-wait", 360 * and all locking issues are left to the caller. 361 */ 362 static int sscape_wait_dma_unsafe(unsigned io_base, enum GA_REG reg, unsigned timeout) 363 { 364 while (!(sscape_read_unsafe(io_base, reg) & 0x01) && (timeout != 0)) { 365 udelay(100); 366 --timeout; 367 } /* while */ 368 369 return (sscape_read_unsafe(io_base, reg) & 0x01); 370 } 371 372 /* 373 * Wait for the On-Board Processor to return its start-up 374 * acknowledgement sequence. This wait is too long for 375 * us to perform "busy-waiting", and so we must sleep. 376 * This in turn means that we must not be holding any 377 * spinlocks when we call this function. 378 */ 379 static int obp_startup_ack(struct soundscape *s, unsigned timeout) 380 { 381 while (timeout != 0) { 382 unsigned long flags; 383 unsigned char x; 384 385 schedule_timeout_interruptible(1); 386 387 spin_lock_irqsave(&s->lock, flags); 388 x = inb(HOST_DATA_IO(s->io_base)); 389 spin_unlock_irqrestore(&s->lock, flags); 390 if ((x & 0xfe) == 0xfe) 391 return 1; 392 393 --timeout; 394 } /* while */ 395 396 return 0; 397 } 398 399 /* 400 * Wait for the host to return its start-up acknowledgement 401 * sequence. This wait is too long for us to perform 402 * "busy-waiting", and so we must sleep. This in turn means 403 * that we must not be holding any spinlocks when we call 404 * this function. 405 */ 406 static int host_startup_ack(struct soundscape *s, unsigned timeout) 407 { 408 while (timeout != 0) { 409 unsigned long flags; 410 unsigned char x; 411 412 schedule_timeout_interruptible(1); 413 414 spin_lock_irqsave(&s->lock, flags); 415 x = inb(HOST_DATA_IO(s->io_base)); 416 spin_unlock_irqrestore(&s->lock, flags); 417 if (x == 0xfe) 418 return 1; 419 420 --timeout; 421 } /* while */ 422 423 return 0; 424 } 425 426 /* 427 * Upload a byte-stream into the SoundScape using DMA channel A. 428 */ 429 static int upload_dma_data(struct soundscape *s, 430 const unsigned char __user *data, 431 size_t size) 432 { 433 unsigned long flags; 434 struct snd_dma_buffer dma; 435 int ret; 436 437 if (!get_dmabuf(&dma, PAGE_ALIGN(size))) 438 return -ENOMEM; 439 440 spin_lock_irqsave(&s->lock, flags); 441 442 /* 443 * Reset the board ... 444 */ 445 sscape_write_unsafe(s->io_base, GA_HMCTL_REG, sscape_read_unsafe(s->io_base, GA_HMCTL_REG) & 0x3f); 446 447 /* 448 * Enable the DMA channels and configure them ... 449 */ 450 sscape_write_unsafe(s->io_base, GA_DMACFG_REG, 0x50); 451 sscape_write_unsafe(s->io_base, GA_DMAA_REG, (s->chip->dma1 << 4) | DMA_8BIT); 452 sscape_write_unsafe(s->io_base, GA_DMAB_REG, 0x20); 453 454 /* 455 * Take the board out of reset ... 456 */ 457 sscape_write_unsafe(s->io_base, GA_HMCTL_REG, sscape_read_unsafe(s->io_base, GA_HMCTL_REG) | 0x80); 458 459 /* 460 * Upload the user's data (firmware?) to the SoundScape 461 * board through the DMA channel ... 462 */ 463 while (size != 0) { 464 unsigned long len; 465 466 /* 467 * Apparently, copying to/from userspace can sleep. 468 * We are therefore forbidden from holding any 469 * spinlocks while we copy ... 470 */ 471 spin_unlock_irqrestore(&s->lock, flags); 472 473 /* 474 * Remember that the data that we want to DMA 475 * comes from USERSPACE. We have already verified 476 * the userspace pointer ... 477 */ 478 len = min(size, dma.bytes); 479 len -= __copy_from_user(dma.area, data, len); 480 data += len; 481 size -= len; 482 483 /* 484 * Grab that spinlock again, now that we've 485 * finished copying! 486 */ 487 spin_lock_irqsave(&s->lock, flags); 488 489 snd_dma_program(s->chip->dma1, dma.addr, len, DMA_MODE_WRITE); 490 sscape_start_dma_unsafe(s->io_base, GA_DMAA_REG); 491 if (!sscape_wait_dma_unsafe(s->io_base, GA_DMAA_REG, 5000)) { 492 /* 493 * Don't forget to release this spinlock we're holding ... 494 */ 495 spin_unlock_irqrestore(&s->lock, flags); 496 497 snd_printk(KERN_ERR "sscape: DMA upload has timed out\n"); 498 ret = -EAGAIN; 499 goto _release_dma; 500 } 501 } /* while */ 502 503 set_host_mode_unsafe(s->io_base); 504 505 /* 506 * Boot the board ... (I think) 507 */ 508 sscape_write_unsafe(s->io_base, GA_HMCTL_REG, sscape_read_unsafe(s->io_base, GA_HMCTL_REG) | 0x40); 509 spin_unlock_irqrestore(&s->lock, flags); 510 511 /* 512 * If all has gone well, then the board should acknowledge 513 * the new upload and tell us that it has rebooted OK. We 514 * give it 5 seconds (max) ... 515 */ 516 ret = 0; 517 if (!obp_startup_ack(s, 5)) { 518 snd_printk(KERN_ERR "sscape: No response from on-board processor after upload\n"); 519 ret = -EAGAIN; 520 } else if (!host_startup_ack(s, 5)) { 521 snd_printk(KERN_ERR "sscape: SoundScape failed to initialise\n"); 522 ret = -EAGAIN; 523 } 524 525 _release_dma: 526 /* 527 * NOTE!!! We are NOT holding any spinlocks at this point !!! 528 */ 529 sscape_write(s, GA_DMAA_REG, (s->ic_type == IC_ODIE ? 0x70 : 0x40)); 530 free_dmabuf(&dma); 531 532 return ret; 533 } 534 535 /* 536 * Upload the bootblock(?) into the SoundScape. The only 537 * purpose of this block of code seems to be to tell 538 * us which version of the microcode we should be using. 539 * 540 * NOTE: The boot-block data resides in USER-SPACE!!! 541 * However, we have already verified its memory 542 * addresses by the time we get here. 543 */ 544 static int sscape_upload_bootblock(struct soundscape *sscape, struct sscape_bootblock __user *bb) 545 { 546 unsigned long flags; 547 int data = 0; 548 int ret; 549 550 ret = upload_dma_data(sscape, bb->code, sizeof(bb->code)); 551 552 spin_lock_irqsave(&sscape->lock, flags); 553 if (ret == 0) { 554 data = host_read_ctrl_unsafe(sscape->io_base, 100); 555 } 556 set_midi_mode_unsafe(sscape->io_base); 557 spin_unlock_irqrestore(&sscape->lock, flags); 558 559 if (ret == 0) { 560 if (data < 0) { 561 snd_printk(KERN_ERR "sscape: timeout reading firmware version\n"); 562 ret = -EAGAIN; 563 } 564 else if (__copy_to_user(&bb->version, &data, sizeof(bb->version))) { 565 ret = -EFAULT; 566 } 567 } 568 569 return ret; 570 } 571 572 /* 573 * Upload the microcode into the SoundScape. The 574 * microcode is 64K of data, and if we try to copy 575 * it into a local variable then we will SMASH THE 576 * KERNEL'S STACK! We therefore leave it in USER 577 * SPACE, and save ourselves from copying it at all. 578 */ 579 static int sscape_upload_microcode(struct soundscape *sscape, 580 const struct sscape_microcode __user *mc) 581 { 582 unsigned long flags; 583 char __user *code; 584 int err; 585 586 /* 587 * We are going to have to copy this data into a special 588 * DMA-able buffer before we can upload it. We shall therefore 589 * just check that the data pointer is valid for now. 590 * 591 * NOTE: This buffer is 64K long! That's WAY too big to 592 * copy into a stack-temporary anyway. 593 */ 594 if ( get_user(code, &mc->code) || 595 !access_ok(VERIFY_READ, code, SSCAPE_MICROCODE_SIZE) ) 596 return -EFAULT; 597 598 if ((err = upload_dma_data(sscape, code, SSCAPE_MICROCODE_SIZE)) == 0) { 599 snd_printk(KERN_INFO "sscape: MIDI firmware loaded\n"); 600 } 601 602 spin_lock_irqsave(&sscape->lock, flags); 603 set_midi_mode_unsafe(sscape->io_base); 604 spin_unlock_irqrestore(&sscape->lock, flags); 605 606 initialise_mpu401(sscape->mpu); 607 608 return err; 609 } 610 611 /* 612 * Hardware-specific device functions, to implement special 613 * IOCTLs for the SoundScape card. This is how we upload 614 * the microcode into the card, for example, and so we 615 * must ensure that no two processes can open this device 616 * simultaneously, and that we can't open it at all if 617 * someone is using the MIDI device. 618 */ 619 static int sscape_hw_open(struct snd_hwdep * hw, struct file *file) 620 { 621 register struct soundscape *sscape = get_hwdep_soundscape(hw); 622 unsigned long flags; 623 int err; 624 625 spin_lock_irqsave(&sscape->fwlock, flags); 626 627 if ((sscape->midi_usage != 0) || sscape->hw_in_use) { 628 err = -EBUSY; 629 } else { 630 sscape->hw_in_use = 1; 631 err = 0; 632 } 633 634 spin_unlock_irqrestore(&sscape->fwlock, flags); 635 return err; 636 } 637 638 static int sscape_hw_release(struct snd_hwdep * hw, struct file *file) 639 { 640 register struct soundscape *sscape = get_hwdep_soundscape(hw); 641 unsigned long flags; 642 643 spin_lock_irqsave(&sscape->fwlock, flags); 644 sscape->hw_in_use = 0; 645 spin_unlock_irqrestore(&sscape->fwlock, flags); 646 return 0; 647 } 648 649 static int sscape_hw_ioctl(struct snd_hwdep * hw, struct file *file, 650 unsigned int cmd, unsigned long arg) 651 { 652 struct soundscape *sscape = get_hwdep_soundscape(hw); 653 int err = -EBUSY; 654 655 switch (cmd) { 656 case SND_SSCAPE_LOAD_BOOTB: 657 { 658 register struct sscape_bootblock __user *bb = (struct sscape_bootblock __user *) arg; 659 660 /* 661 * We are going to have to copy this data into a special 662 * DMA-able buffer before we can upload it. We shall therefore 663 * just check that the data pointer is valid for now ... 664 */ 665 if ( !access_ok(VERIFY_READ, bb->code, sizeof(bb->code)) ) 666 return -EFAULT; 667 668 /* 669 * Now check that we can write the firmware version number too... 670 */ 671 if ( !access_ok(VERIFY_WRITE, &bb->version, sizeof(bb->version)) ) 672 return -EFAULT; 673 674 err = sscape_upload_bootblock(sscape, bb); 675 } 676 break; 677 678 case SND_SSCAPE_LOAD_MCODE: 679 { 680 register const struct sscape_microcode __user *mc = (const struct sscape_microcode __user *) arg; 681 682 err = sscape_upload_microcode(sscape, mc); 683 } 684 break; 685 686 default: 687 err = -EINVAL; 688 break; 689 } /* switch */ 690 691 return err; 692 } 693 694 695 /* 696 * Mixer control for the SoundScape's MIDI device. 697 */ 698 static int sscape_midi_info(struct snd_kcontrol *ctl, 699 struct snd_ctl_elem_info *uinfo) 700 { 701 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 702 uinfo->count = 1; 703 uinfo->value.integer.min = 0; 704 uinfo->value.integer.max = 127; 705 return 0; 706 } 707 708 static int sscape_midi_get(struct snd_kcontrol *kctl, 709 struct snd_ctl_elem_value *uctl) 710 { 711 struct snd_cs4231 *chip = snd_kcontrol_chip(kctl); 712 struct snd_card *card = chip->card; 713 register struct soundscape *s = get_card_soundscape(card); 714 unsigned long flags; 715 716 spin_lock_irqsave(&s->lock, flags); 717 set_host_mode_unsafe(s->io_base); 718 719 if (host_write_ctrl_unsafe(s->io_base, CMD_GET_MIDI_VOL, 100)) { 720 uctl->value.integer.value[0] = host_read_ctrl_unsafe(s->io_base, 100); 721 } 722 723 set_midi_mode_unsafe(s->io_base); 724 spin_unlock_irqrestore(&s->lock, flags); 725 return 0; 726 } 727 728 static int sscape_midi_put(struct snd_kcontrol *kctl, 729 struct snd_ctl_elem_value *uctl) 730 { 731 struct snd_cs4231 *chip = snd_kcontrol_chip(kctl); 732 struct snd_card *card = chip->card; 733 register struct soundscape *s = get_card_soundscape(card); 734 unsigned long flags; 735 int change; 736 737 spin_lock_irqsave(&s->lock, flags); 738 739 /* 740 * We need to put the board into HOST mode before we 741 * can send any volume-changing HOST commands ... 742 */ 743 set_host_mode_unsafe(s->io_base); 744 745 /* 746 * To successfully change the MIDI volume setting, you seem to 747 * have to write a volume command, write the new volume value, 748 * and then perform another volume-related command. Perhaps the 749 * first command is an "open" and the second command is a "close"? 750 */ 751 if (s->midi_vol == ((unsigned char) uctl->value.integer. value[0] & 127)) { 752 change = 0; 753 goto __skip_change; 754 } 755 change = (host_write_ctrl_unsafe(s->io_base, CMD_SET_MIDI_VOL, 100) 756 && host_write_ctrl_unsafe(s->io_base, ((unsigned char) uctl->value.integer. value[0]) & 127, 100) 757 && host_write_ctrl_unsafe(s->io_base, CMD_XXX_MIDI_VOL, 100)); 758 __skip_change: 759 760 /* 761 * Take the board out of HOST mode and back into MIDI mode ... 762 */ 763 set_midi_mode_unsafe(s->io_base); 764 765 spin_unlock_irqrestore(&s->lock, flags); 766 return change; 767 } 768 769 static struct snd_kcontrol_new midi_mixer_ctl = { 770 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 771 .name = "MIDI", 772 .info = sscape_midi_info, 773 .get = sscape_midi_get, 774 .put = sscape_midi_put 775 }; 776 777 /* 778 * The SoundScape can use two IRQs from a possible set of four. 779 * These IRQs are encoded as bit patterns so that they can be 780 * written to the control registers. 781 */ 782 static unsigned __devinit get_irq_config(int irq) 783 { 784 static const int valid_irq[] = { 9, 5, 7, 10 }; 785 unsigned cfg; 786 787 for (cfg = 0; cfg < ARRAY_SIZE(valid_irq); ++cfg) { 788 if (irq == valid_irq[cfg]) 789 return cfg; 790 } /* for */ 791 792 return INVALID_IRQ; 793 } 794 795 796 /* 797 * Perform certain arcane port-checks to see whether there 798 * is a SoundScape board lurking behind the given ports. 799 */ 800 static int __devinit detect_sscape(struct soundscape *s) 801 { 802 unsigned long flags; 803 unsigned d; 804 int retval = 0; 805 806 spin_lock_irqsave(&s->lock, flags); 807 808 /* 809 * The following code is lifted from the original OSS driver, 810 * and as I don't have a datasheet I cannot really comment 811 * on what it is doing... 812 */ 813 if ((inb(HOST_CTRL_IO(s->io_base)) & 0x78) != 0) 814 goto _done; 815 816 d = inb(ODIE_ADDR_IO(s->io_base)) & 0xf0; 817 if ((d & 0x80) != 0) 818 goto _done; 819 820 if (d == 0) { 821 s->codec_type = 1; 822 s->ic_type = IC_ODIE; 823 } else if ((d & 0x60) != 0) { 824 s->codec_type = 2; 825 s->ic_type = IC_OPUS; 826 } else 827 goto _done; 828 829 outb(0xfa, ODIE_ADDR_IO(s->io_base)); 830 if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0a) 831 goto _done; 832 833 outb(0xfe, ODIE_ADDR_IO(s->io_base)); 834 if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0e) 835 goto _done; 836 if ((inb(ODIE_DATA_IO(s->io_base)) & 0x9f) != 0x0e) 837 goto _done; 838 839 /* 840 * SoundScape successfully detected! 841 */ 842 retval = 1; 843 844 _done: 845 spin_unlock_irqrestore(&s->lock, flags); 846 return retval; 847 } 848 849 /* 850 * ALSA callback function, called when attempting to open the MIDI device. 851 * Check that the MIDI firmware has been loaded, because we don't want 852 * to crash the machine. Also check that someone isn't using the hardware 853 * IOCTL device. 854 */ 855 static int mpu401_open(struct snd_mpu401 * mpu) 856 { 857 int err; 858 859 if (!verify_mpu401(mpu)) { 860 snd_printk(KERN_ERR "sscape: MIDI disabled, please load firmware\n"); 861 err = -ENODEV; 862 } else { 863 register struct soundscape *sscape = get_mpu401_soundscape(mpu); 864 unsigned long flags; 865 866 spin_lock_irqsave(&sscape->fwlock, flags); 867 868 if (sscape->hw_in_use || (sscape->midi_usage == ULONG_MAX)) { 869 err = -EBUSY; 870 } else { 871 ++(sscape->midi_usage); 872 err = 0; 873 } 874 875 spin_unlock_irqrestore(&sscape->fwlock, flags); 876 } 877 878 return err; 879 } 880 881 static void mpu401_close(struct snd_mpu401 * mpu) 882 { 883 register struct soundscape *sscape = get_mpu401_soundscape(mpu); 884 unsigned long flags; 885 886 spin_lock_irqsave(&sscape->fwlock, flags); 887 --(sscape->midi_usage); 888 spin_unlock_irqrestore(&sscape->fwlock, flags); 889 } 890 891 /* 892 * Initialse an MPU-401 subdevice for MIDI support on the SoundScape. 893 */ 894 static int __devinit create_mpu401(struct snd_card *card, int devnum, unsigned long port, int irq) 895 { 896 struct soundscape *sscape = get_card_soundscape(card); 897 struct snd_rawmidi *rawmidi; 898 int err; 899 900 #define MPU401_SHARE_HARDWARE 1 901 if ((err = snd_mpu401_uart_new(card, devnum, 902 MPU401_HW_MPU401, 903 port, MPU401_SHARE_HARDWARE, 904 irq, SA_INTERRUPT, 905 &rawmidi)) == 0) { 906 struct snd_mpu401 *mpu = (struct snd_mpu401 *) rawmidi->private_data; 907 mpu->open_input = mpu401_open; 908 mpu->open_output = mpu401_open; 909 mpu->close_input = mpu401_close; 910 mpu->close_output = mpu401_close; 911 mpu->private_data = sscape; 912 sscape->mpu = mpu; 913 914 initialise_mpu401(mpu); 915 } 916 917 return err; 918 } 919 920 921 /* 922 * Override for the CS4231 playback format function. 923 * The AD1845 has much simpler format and rate selection. 924 */ 925 static void ad1845_playback_format(struct snd_cs4231 * chip, struct snd_pcm_hw_params *params, unsigned char format) 926 { 927 unsigned long flags; 928 unsigned rate = params_rate(params); 929 930 /* 931 * The AD1845 can't handle sample frequencies 932 * outside of 4 kHZ to 50 kHZ 933 */ 934 if (rate > 50000) 935 rate = 50000; 936 else if (rate < 4000) 937 rate = 4000; 938 939 spin_lock_irqsave(&chip->reg_lock, flags); 940 941 /* 942 * Program the AD1845 correctly for the playback stream. 943 * Note that we do NOT need to toggle the MCE bit because 944 * the PLAYBACK_ENABLE bit of the Interface Configuration 945 * register is set. 946 * 947 * NOTE: We seem to need to write to the MSB before the LSB 948 * to get the correct sample frequency. 949 */ 950 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, (format & 0xf0)); 951 snd_cs4231_out(chip, AD1845_FREQ_SEL_MSB, (unsigned char) (rate >> 8)); 952 snd_cs4231_out(chip, AD1845_FREQ_SEL_LSB, (unsigned char) rate); 953 954 spin_unlock_irqrestore(&chip->reg_lock, flags); 955 } 956 957 /* 958 * Override for the CS4231 capture format function. 959 * The AD1845 has much simpler format and rate selection. 960 */ 961 static void ad1845_capture_format(struct snd_cs4231 * chip, struct snd_pcm_hw_params *params, unsigned char format) 962 { 963 unsigned long flags; 964 unsigned rate = params_rate(params); 965 966 /* 967 * The AD1845 can't handle sample frequencies 968 * outside of 4 kHZ to 50 kHZ 969 */ 970 if (rate > 50000) 971 rate = 50000; 972 else if (rate < 4000) 973 rate = 4000; 974 975 spin_lock_irqsave(&chip->reg_lock, flags); 976 977 /* 978 * Program the AD1845 correctly for the playback stream. 979 * Note that we do NOT need to toggle the MCE bit because 980 * the CAPTURE_ENABLE bit of the Interface Configuration 981 * register is set. 982 * 983 * NOTE: We seem to need to write to the MSB before the LSB 984 * to get the correct sample frequency. 985 */ 986 snd_cs4231_out(chip, CS4231_REC_FORMAT, (format & 0xf0)); 987 snd_cs4231_out(chip, AD1845_FREQ_SEL_MSB, (unsigned char) (rate >> 8)); 988 snd_cs4231_out(chip, AD1845_FREQ_SEL_LSB, (unsigned char) rate); 989 990 spin_unlock_irqrestore(&chip->reg_lock, flags); 991 } 992 993 /* 994 * Create an AD1845 PCM subdevice on the SoundScape. The AD1845 995 * is very much like a CS4231, with a few extra bits. We will 996 * try to support at least some of the extra bits by overriding 997 * some of the CS4231 callback. 998 */ 999 static int __devinit create_ad1845(struct snd_card *card, unsigned port, int irq, int dma1) 1000 { 1001 register struct soundscape *sscape = get_card_soundscape(card); 1002 struct snd_cs4231 *chip; 1003 int err; 1004 1005 #define CS4231_SHARE_HARDWARE (CS4231_HWSHARE_DMA1 | CS4231_HWSHARE_DMA2) 1006 /* 1007 * The AD1845 PCM device is only half-duplex, and so 1008 * we only give it one DMA channel ... 1009 */ 1010 if ((err = snd_cs4231_create(card, 1011 port, -1, irq, dma1, dma1, 1012 CS4231_HW_DETECT, 1013 CS4231_HWSHARE_DMA1, &chip)) == 0) { 1014 unsigned long flags; 1015 struct snd_pcm *pcm; 1016 1017 #define AD1845_FREQ_SEL_ENABLE 0x08 1018 1019 #define AD1845_PWR_DOWN_CTRL 0x1b 1020 #define AD1845_CRYS_CLOCK_SEL 0x1d 1021 1022 /* 1023 * It turns out that the PLAYBACK_ENABLE bit is set 1024 * by the lowlevel driver ... 1025 * 1026 #define AD1845_IFACE_CONFIG \ 1027 (CS4231_AUTOCALIB | CS4231_RECORD_ENABLE | CS4231_PLAYBACK_ENABLE) 1028 snd_cs4231_mce_up(chip); 1029 spin_lock_irqsave(&chip->reg_lock, flags); 1030 snd_cs4231_out(chip, CS4231_IFACE_CTRL, AD1845_IFACE_CONFIG); 1031 spin_unlock_irqrestore(&chip->reg_lock, flags); 1032 snd_cs4231_mce_down(chip); 1033 */ 1034 1035 /* 1036 * The input clock frequency on the SoundScape must 1037 * be 14.31818 MHz, because we must set this register 1038 * to get the playback to sound correct ... 1039 */ 1040 snd_cs4231_mce_up(chip); 1041 spin_lock_irqsave(&chip->reg_lock, flags); 1042 snd_cs4231_out(chip, AD1845_CRYS_CLOCK_SEL, 0x20); 1043 spin_unlock_irqrestore(&chip->reg_lock, flags); 1044 snd_cs4231_mce_down(chip); 1045 1046 /* 1047 * More custom configuration: 1048 * a) select "mode 2", and provide a current drive of 8 mA 1049 * b) enable frequency selection (for capture/playback) 1050 */ 1051 spin_lock_irqsave(&chip->reg_lock, flags); 1052 snd_cs4231_out(chip, CS4231_MISC_INFO, (CS4231_MODE2 | 0x10)); 1053 snd_cs4231_out(chip, AD1845_PWR_DOWN_CTRL, snd_cs4231_in(chip, AD1845_PWR_DOWN_CTRL) | AD1845_FREQ_SEL_ENABLE); 1054 spin_unlock_irqrestore(&chip->reg_lock, flags); 1055 1056 if ((err = snd_cs4231_pcm(chip, 0, &pcm)) < 0) { 1057 snd_printk(KERN_ERR "sscape: No PCM device for AD1845 chip\n"); 1058 goto _error; 1059 } 1060 1061 if ((err = snd_cs4231_mixer(chip)) < 0) { 1062 snd_printk(KERN_ERR "sscape: No mixer device for AD1845 chip\n"); 1063 goto _error; 1064 } 1065 1066 if ((err = snd_ctl_add(card, snd_ctl_new1(&midi_mixer_ctl, chip))) < 0) { 1067 snd_printk(KERN_ERR "sscape: Could not create MIDI mixer control\n"); 1068 goto _error; 1069 } 1070 1071 strcpy(card->driver, "SoundScape"); 1072 strcpy(card->shortname, pcm->name); 1073 snprintf(card->longname, sizeof(card->longname), 1074 "%s at 0x%lx, IRQ %d, DMA %d\n", 1075 pcm->name, chip->port, chip->irq, chip->dma1); 1076 chip->set_playback_format = ad1845_playback_format; 1077 chip->set_capture_format = ad1845_capture_format; 1078 sscape->chip = chip; 1079 } 1080 1081 _error: 1082 return err; 1083 } 1084 1085 1086 /* 1087 * Create an ALSA soundcard entry for the SoundScape, using 1088 * the given list of port, IRQ and DMA resources. 1089 */ 1090 static int __devinit create_sscape(int dev, struct snd_card **rcardp) 1091 { 1092 struct snd_card *card; 1093 register struct soundscape *sscape; 1094 register unsigned dma_cfg; 1095 unsigned irq_cfg; 1096 unsigned mpu_irq_cfg; 1097 unsigned xport; 1098 struct resource *io_res; 1099 unsigned long flags; 1100 int err; 1101 1102 /* 1103 * Check that the user didn't pass us garbage data ... 1104 */ 1105 irq_cfg = get_irq_config(irq[dev]); 1106 if (irq_cfg == INVALID_IRQ) { 1107 snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", irq[dev]); 1108 return -ENXIO; 1109 } 1110 1111 mpu_irq_cfg = get_irq_config(mpu_irq[dev]); 1112 if (mpu_irq_cfg == INVALID_IRQ) { 1113 printk(KERN_ERR "sscape: Invalid IRQ %d\n", mpu_irq[dev]); 1114 return -ENXIO; 1115 } 1116 xport = port[dev]; 1117 1118 /* 1119 * Grab IO ports that we will need to probe so that we 1120 * can detect and control this hardware ... 1121 */ 1122 if ((io_res = request_region(xport, 8, "SoundScape")) == NULL) { 1123 snd_printk(KERN_ERR "sscape: can't grab port 0x%x\n", xport); 1124 return -EBUSY; 1125 } 1126 1127 /* 1128 * Grab both DMA channels (OK, only one for now) ... 1129 */ 1130 if ((err = request_dma(dma[dev], "SoundScape")) < 0) { 1131 snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", dma[dev]); 1132 goto _release_region; 1133 } 1134 1135 /* 1136 * Create a new ALSA sound card entry, in anticipation 1137 * of detecting our hardware ... 1138 */ 1139 if ((card = snd_card_new(index[dev], id[dev], THIS_MODULE, 1140 sizeof(struct soundscape))) == NULL) { 1141 err = -ENOMEM; 1142 goto _release_dma; 1143 } 1144 1145 sscape = get_card_soundscape(card); 1146 spin_lock_init(&sscape->lock); 1147 spin_lock_init(&sscape->fwlock); 1148 sscape->io_res = io_res; 1149 sscape->io_base = xport; 1150 1151 if (!detect_sscape(sscape)) { 1152 printk(KERN_ERR "sscape: hardware not detected at 0x%x\n", sscape->io_base); 1153 err = -ENODEV; 1154 goto _release_card; 1155 } 1156 1157 printk(KERN_INFO "sscape: hardware detected at 0x%x, using IRQ %d, DMA %d\n", 1158 sscape->io_base, irq[dev], dma[dev]); 1159 1160 /* 1161 * Now create the hardware-specific device so that we can 1162 * load the microcode into the on-board processor. 1163 * We cannot use the MPU-401 MIDI system until this firmware 1164 * has been loaded into the card. 1165 */ 1166 if ((err = snd_hwdep_new(card, "MC68EC000", 0, &(sscape->hw))) < 0) { 1167 printk(KERN_ERR "sscape: Failed to create firmware device\n"); 1168 goto _release_card; 1169 } 1170 strlcpy(sscape->hw->name, "SoundScape M68K", sizeof(sscape->hw->name)); 1171 sscape->hw->name[sizeof(sscape->hw->name) - 1] = '\0'; 1172 sscape->hw->iface = SNDRV_HWDEP_IFACE_SSCAPE; 1173 sscape->hw->ops.open = sscape_hw_open; 1174 sscape->hw->ops.release = sscape_hw_release; 1175 sscape->hw->ops.ioctl = sscape_hw_ioctl; 1176 sscape->hw->private_data = sscape; 1177 1178 /* 1179 * Tell the on-board devices where their resources are (I think - 1180 * I can't be sure without a datasheet ... So many magic values!) 1181 */ 1182 spin_lock_irqsave(&sscape->lock, flags); 1183 1184 activate_ad1845_unsafe(sscape->io_base); 1185 1186 sscape_write_unsafe(sscape->io_base, GA_INTENA_REG, 0x00); /* disable */ 1187 sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2e); 1188 sscape_write_unsafe(sscape->io_base, GA_SMCFGB_REG, 0x00); 1189 1190 /* 1191 * Enable and configure the DMA channels ... 1192 */ 1193 sscape_write_unsafe(sscape->io_base, GA_DMACFG_REG, 0x50); 1194 dma_cfg = (sscape->ic_type == IC_ODIE ? 0x70 : 0x40); 1195 sscape_write_unsafe(sscape->io_base, GA_DMAA_REG, dma_cfg); 1196 sscape_write_unsafe(sscape->io_base, GA_DMAB_REG, 0x20); 1197 1198 sscape_write_unsafe(sscape->io_base, 1199 GA_INTCFG_REG, 0xf0 | (mpu_irq_cfg << 2) | mpu_irq_cfg); 1200 sscape_write_unsafe(sscape->io_base, 1201 GA_CDCFG_REG, 0x09 | DMA_8BIT | (dma[dev] << 4) | (irq_cfg << 1)); 1202 1203 spin_unlock_irqrestore(&sscape->lock, flags); 1204 1205 /* 1206 * We have now enabled the codec chip, and so we should 1207 * detect the AD1845 device ... 1208 */ 1209 if ((err = create_ad1845(card, CODEC_IO(xport), irq[dev], dma[dev])) < 0) { 1210 printk(KERN_ERR "sscape: No AD1845 device at 0x%x, IRQ %d\n", 1211 CODEC_IO(xport), irq[dev]); 1212 goto _release_card; 1213 } 1214 #define MIDI_DEVNUM 0 1215 if ((err = create_mpu401(card, MIDI_DEVNUM, MPU401_IO(xport), mpu_irq[dev])) < 0) { 1216 printk(KERN_ERR "sscape: Failed to create MPU-401 device at 0x%x\n", 1217 MPU401_IO(xport)); 1218 goto _release_card; 1219 } 1220 1221 /* 1222 * Enable the master IRQ ... 1223 */ 1224 sscape_write(sscape, GA_INTENA_REG, 0x80); 1225 1226 /* 1227 * Initialize mixer 1228 */ 1229 sscape->midi_vol = 0; 1230 host_write_ctrl_unsafe(sscape->io_base, CMD_SET_MIDI_VOL, 100); 1231 host_write_ctrl_unsafe(sscape->io_base, 0, 100); 1232 host_write_ctrl_unsafe(sscape->io_base, CMD_XXX_MIDI_VOL, 100); 1233 1234 /* 1235 * Now that we have successfully created this sound card, 1236 * it is safe to store the pointer. 1237 * NOTE: we only register the sound card's "destructor" 1238 * function now that our "constructor" has completed. 1239 */ 1240 card->private_free = soundscape_free; 1241 *rcardp = card; 1242 1243 return 0; 1244 1245 _release_card: 1246 snd_card_free(card); 1247 1248 _release_dma: 1249 free_dma(dma[dev]); 1250 1251 _release_region: 1252 release_and_free_resource(io_res); 1253 1254 return err; 1255 } 1256 1257 1258 static int __init snd_sscape_probe(struct platform_device *pdev) 1259 { 1260 int dev = pdev->id; 1261 struct snd_card *card; 1262 int ret; 1263 1264 dma[dev] &= 0x03; 1265 ret = create_sscape(dev, &card); 1266 if (ret < 0) 1267 return ret; 1268 snd_card_set_dev(card, &pdev->dev); 1269 if ((ret = snd_card_register(card)) < 0) { 1270 printk(KERN_ERR "sscape: Failed to register sound card\n"); 1271 return ret; 1272 } 1273 platform_set_drvdata(pdev, card); 1274 return 0; 1275 } 1276 1277 static int __devexit snd_sscape_remove(struct platform_device *devptr) 1278 { 1279 snd_card_free(platform_get_drvdata(devptr)); 1280 platform_set_drvdata(devptr, NULL); 1281 return 0; 1282 } 1283 1284 #define SSCAPE_DRIVER "snd_sscape" 1285 1286 static struct platform_driver snd_sscape_driver = { 1287 .probe = snd_sscape_probe, 1288 .remove = __devexit_p(snd_sscape_remove), 1289 /* FIXME: suspend/resume */ 1290 .driver = { 1291 .name = SSCAPE_DRIVER 1292 }, 1293 }; 1294 1295 #ifdef CONFIG_PNP 1296 static inline int __devinit get_next_autoindex(int i) 1297 { 1298 while (i < SNDRV_CARDS && port[i] != SNDRV_AUTO_PORT) 1299 ++i; 1300 return i; 1301 } 1302 1303 1304 static int __devinit sscape_pnp_detect(struct pnp_card_link *pcard, 1305 const struct pnp_card_device_id *pid) 1306 { 1307 static int idx = 0; 1308 struct pnp_dev *dev; 1309 struct snd_card *card; 1310 int ret; 1311 1312 /* 1313 * Allow this function to fail *quietly* if all the ISA PnP 1314 * devices were configured using module parameters instead. 1315 */ 1316 if ((idx = get_next_autoindex(idx)) >= SNDRV_CARDS) 1317 return -ENOSPC; 1318 1319 /* 1320 * We have found a candidate ISA PnP card. Now we 1321 * have to check that it has the devices that we 1322 * expect it to have. 1323 * 1324 * We will NOT try and autoconfigure all of the resources 1325 * needed and then activate the card as we are assuming that 1326 * has already been done at boot-time using /proc/isapnp. 1327 * We shall simply try to give each active card the resources 1328 * that it wants. This is a sensible strategy for a modular 1329 * system where unused modules are unloaded regularly. 1330 * 1331 * This strategy is utterly useless if we compile the driver 1332 * into the kernel, of course. 1333 */ 1334 // printk(KERN_INFO "sscape: %s\n", card->name); 1335 1336 /* 1337 * Check that we still have room for another sound card ... 1338 */ 1339 dev = pnp_request_card_device(pcard, pid->devs[0].id, NULL); 1340 if (! dev) 1341 return -ENODEV; 1342 1343 if (!pnp_is_active(dev)) { 1344 if (pnp_activate_dev(dev) < 0) { 1345 printk(KERN_INFO "sscape: device is inactive\n"); 1346 return -EBUSY; 1347 } 1348 } 1349 1350 /* 1351 * Read the correct parameters off the ISA PnP bus ... 1352 */ 1353 port[idx] = pnp_port_start(dev, 0); 1354 irq[idx] = pnp_irq(dev, 0); 1355 mpu_irq[idx] = pnp_irq(dev, 1); 1356 dma[idx] = pnp_dma(dev, 0) & 0x03; 1357 1358 ret = create_sscape(idx, &card); 1359 if (ret < 0) 1360 return ret; 1361 snd_card_set_dev(card, &pcard->card->dev); 1362 if ((ret = snd_card_register(card)) < 0) { 1363 printk(KERN_ERR "sscape: Failed to register sound card\n"); 1364 snd_card_free(card); 1365 return ret; 1366 } 1367 1368 pnp_set_card_drvdata(pcard, card); 1369 ++idx; 1370 1371 return ret; 1372 } 1373 1374 static void __devexit sscape_pnp_remove(struct pnp_card_link * pcard) 1375 { 1376 snd_card_free(pnp_get_card_drvdata(pcard)); 1377 pnp_set_card_drvdata(pcard, NULL); 1378 } 1379 1380 static struct pnp_card_driver sscape_pnpc_driver = { 1381 .flags = PNP_DRIVER_RES_DO_NOT_CHANGE, 1382 .name = "sscape", 1383 .id_table = sscape_pnpids, 1384 .probe = sscape_pnp_detect, 1385 .remove = __devexit_p(sscape_pnp_remove), 1386 }; 1387 1388 #endif /* CONFIG_PNP */ 1389 1390 static void __init_or_module sscape_unregister_all(void) 1391 { 1392 int i; 1393 1394 if (pnp_registered) 1395 pnp_unregister_card_driver(&sscape_pnpc_driver); 1396 for (i = 0; i < ARRAY_SIZE(platform_devices); ++i) 1397 platform_device_unregister(platform_devices[i]); 1398 platform_driver_unregister(&snd_sscape_driver); 1399 } 1400 1401 static int __init sscape_manual_probe(void) 1402 { 1403 struct platform_device *device; 1404 int i, ret; 1405 1406 ret = platform_driver_register(&snd_sscape_driver); 1407 if (ret < 0) 1408 return ret; 1409 1410 for (i = 0; i < SNDRV_CARDS; ++i) { 1411 /* 1412 * We do NOT probe for ports. 1413 * If we're not given a port number for this 1414 * card then we completely ignore this line 1415 * of parameters. 1416 */ 1417 if (port[i] == SNDRV_AUTO_PORT) 1418 continue; 1419 1420 /* 1421 * Make sure we were given ALL of the other parameters. 1422 */ 1423 if (irq[i] == SNDRV_AUTO_IRQ || 1424 mpu_irq[i] == SNDRV_AUTO_IRQ || 1425 dma[i] == SNDRV_AUTO_DMA) { 1426 printk(KERN_INFO 1427 "sscape: insufficient parameters, need IO, IRQ, MPU-IRQ and DMA\n"); 1428 ret = -ENXIO; 1429 goto errout; 1430 } 1431 1432 /* 1433 * This cards looks OK ... 1434 */ 1435 device = platform_device_register_simple(SSCAPE_DRIVER, 1436 i, NULL, 0); 1437 if (IS_ERR(device)) { 1438 ret = PTR_ERR(device); 1439 goto errout; 1440 } 1441 platform_devices[i] = device; 1442 } 1443 return 0; 1444 1445 errout: 1446 sscape_unregister_all(); 1447 return ret; 1448 } 1449 1450 static void sscape_exit(void) 1451 { 1452 sscape_unregister_all(); 1453 } 1454 1455 1456 static int __init sscape_init(void) 1457 { 1458 int ret; 1459 1460 /* 1461 * First check whether we were passed any parameters. 1462 * These MUST take precedence over ANY automatic way 1463 * of allocating cards, because the operator is 1464 * S-P-E-L-L-I-N-G it out for us... 1465 */ 1466 ret = sscape_manual_probe(); 1467 if (ret < 0) 1468 return ret; 1469 if (pnp_register_card_driver(&sscape_pnpc_driver) >= 0) 1470 pnp_registered = 1; 1471 return 0; 1472 } 1473 1474 module_init(sscape_init); 1475 module_exit(sscape_exit); 1476