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/isa.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 42MODULE_AUTHOR("Chris Rankin"); 43MODULE_DESCRIPTION("ENSONIQ SoundScape PnP driver"); 44MODULE_LICENSE("GPL"); 45 46static int index[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_IDX; 47static char* id[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_STR; 48static long port[SNDRV_CARDS] __devinitdata = { [0 ... (SNDRV_CARDS-1)] = SNDRV_AUTO_PORT }; 49static int irq[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_IRQ; 50static int mpu_irq[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_IRQ; 51static int dma[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_DMA; 52 53module_param_array(index, int, NULL, 0444); 54MODULE_PARM_DESC(index, "Index number for SoundScape soundcard"); 55 56module_param_array(id, charp, NULL, 0444); 57MODULE_PARM_DESC(id, "Description for SoundScape card"); 58 59module_param_array(port, long, NULL, 0444); 60MODULE_PARM_DESC(port, "Port # for SoundScape driver."); 61 62module_param_array(irq, int, NULL, 0444); 63MODULE_PARM_DESC(irq, "IRQ # for SoundScape driver."); 64 65module_param_array(mpu_irq, int, NULL, 0444); 66MODULE_PARM_DESC(mpu_irq, "MPU401 IRQ # for SoundScape driver."); 67 68module_param_array(dma, int, NULL, 0444); 69MODULE_PARM_DESC(dma, "DMA # for SoundScape driver."); 70 71#ifdef CONFIG_PNP 72static int isa_registered; 73static int pnp_registered; 74 75static struct pnp_card_device_id sscape_pnpids[] = { 76 { .id = "ENS3081", .devs = { { "ENS0000" } } }, 77 { .id = "" } /* end */ 78}; 79 80MODULE_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 108enum 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 127struct 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 150static inline struct soundscape *get_card_soundscape(struct snd_card *c) 151{ 152 return (struct soundscape *) (c->private_data); 153} 154 155static inline struct soundscape *get_mpu401_soundscape(struct snd_mpu401 * mpu) 156{ 157 return (struct soundscape *) (mpu->private_data); 158} 159 160static 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 */ 171static 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 */ 187static 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 */ 199static 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 */ 209static 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 */ 222static 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 */ 231static 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 */ 239static 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 */ 248static 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 */ 263static 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 */ 279static 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 */ 294static 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 */ 314static 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 */ 322static 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 */ 332static 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 */ 341static 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 */ 352static 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 */ 362static 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 */ 379static 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 */ 406static 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 */ 429static 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 */ 544static 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 */ 579static 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 */ 619static 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 638static 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 649static 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 */ 698static 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 708static 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 728static 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 769static 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 */ 782static 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 */ 800static 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 */ 855static 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 881static 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 */ 894static 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 if ((err = snd_mpu401_uart_new(card, devnum, 901 MPU401_HW_MPU401, 902 port, MPU401_INFO_INTEGRATED, 903 irq, IRQF_DISABLED, 904 &rawmidi)) == 0) { 905 struct snd_mpu401 *mpu = (struct snd_mpu401 *) rawmidi->private_data; 906 mpu->open_input = mpu401_open; 907 mpu->open_output = mpu401_open; 908 mpu->close_input = mpu401_close; 909 mpu->close_output = mpu401_close; 910 mpu->private_data = sscape; 911 sscape->mpu = mpu; 912 913 initialise_mpu401(mpu); 914 } 915 916 return err; 917} 918 919 920/* 921 * Override for the CS4231 playback format function. 922 * The AD1845 has much simpler format and rate selection. 923 */ 924static void ad1845_playback_format(struct snd_cs4231 * chip, struct snd_pcm_hw_params *params, unsigned char format) 925{ 926 unsigned long flags; 927 unsigned rate = params_rate(params); 928 929 /* 930 * The AD1845 can't handle sample frequencies 931 * outside of 4 kHZ to 50 kHZ 932 */ 933 if (rate > 50000) 934 rate = 50000; 935 else if (rate < 4000) 936 rate = 4000; 937 938 spin_lock_irqsave(&chip->reg_lock, flags); 939 940 /* 941 * Program the AD1845 correctly for the playback stream. 942 * Note that we do NOT need to toggle the MCE bit because 943 * the PLAYBACK_ENABLE bit of the Interface Configuration 944 * register is set. 945 * 946 * NOTE: We seem to need to write to the MSB before the LSB 947 * to get the correct sample frequency. 948 */ 949 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, (format & 0xf0)); 950 snd_cs4231_out(chip, AD1845_FREQ_SEL_MSB, (unsigned char) (rate >> 8)); 951 snd_cs4231_out(chip, AD1845_FREQ_SEL_LSB, (unsigned char) rate); 952 953 spin_unlock_irqrestore(&chip->reg_lock, flags); 954} 955 956/* 957 * Override for the CS4231 capture format function. 958 * The AD1845 has much simpler format and rate selection. 959 */ 960static void ad1845_capture_format(struct snd_cs4231 * chip, struct snd_pcm_hw_params *params, unsigned char format) 961{ 962 unsigned long flags; 963 unsigned rate = params_rate(params); 964 965 /* 966 * The AD1845 can't handle sample frequencies 967 * outside of 4 kHZ to 50 kHZ 968 */ 969 if (rate > 50000) 970 rate = 50000; 971 else if (rate < 4000) 972 rate = 4000; 973 974 spin_lock_irqsave(&chip->reg_lock, flags); 975 976 /* 977 * Program the AD1845 correctly for the playback stream. 978 * Note that we do NOT need to toggle the MCE bit because 979 * the CAPTURE_ENABLE bit of the Interface Configuration 980 * register is set. 981 * 982 * NOTE: We seem to need to write to the MSB before the LSB 983 * to get the correct sample frequency. 984 */ 985 snd_cs4231_out(chip, CS4231_REC_FORMAT, (format & 0xf0)); 986 snd_cs4231_out(chip, AD1845_FREQ_SEL_MSB, (unsigned char) (rate >> 8)); 987 snd_cs4231_out(chip, AD1845_FREQ_SEL_LSB, (unsigned char) rate); 988 989 spin_unlock_irqrestore(&chip->reg_lock, flags); 990} 991 992/* 993 * Create an AD1845 PCM subdevice on the SoundScape. The AD1845 994 * is very much like a CS4231, with a few extra bits. We will 995 * try to support at least some of the extra bits by overriding 996 * some of the CS4231 callback. 997 */ 998static int __devinit create_ad1845(struct snd_card *card, unsigned port, int irq, int dma1) 999{ 1000 register struct soundscape *sscape = get_card_soundscape(card); 1001 struct snd_cs4231 *chip; 1002 int err; 1003 1004#define CS4231_SHARE_HARDWARE (CS4231_HWSHARE_DMA1 | CS4231_HWSHARE_DMA2) 1005 /* 1006 * The AD1845 PCM device is only half-duplex, and so 1007 * we only give it one DMA channel ... 1008 */ 1009 if ((err = snd_cs4231_create(card, 1010 port, -1, irq, dma1, dma1, 1011 CS4231_HW_DETECT, 1012 CS4231_HWSHARE_DMA1, &chip)) == 0) { 1013 unsigned long flags; 1014 struct snd_pcm *pcm; 1015 1016#define AD1845_FREQ_SEL_ENABLE 0x08 1017 1018#define AD1845_PWR_DOWN_CTRL 0x1b 1019#define AD1845_CRYS_CLOCK_SEL 0x1d 1020 1021/* 1022 * It turns out that the PLAYBACK_ENABLE bit is set 1023 * by the lowlevel driver ... 1024 * 1025#define AD1845_IFACE_CONFIG \ 1026 (CS4231_AUTOCALIB | CS4231_RECORD_ENABLE | CS4231_PLAYBACK_ENABLE) 1027 snd_cs4231_mce_up(chip); 1028 spin_lock_irqsave(&chip->reg_lock, flags); 1029 snd_cs4231_out(chip, CS4231_IFACE_CTRL, AD1845_IFACE_CONFIG); 1030 spin_unlock_irqrestore(&chip->reg_lock, flags); 1031 snd_cs4231_mce_down(chip); 1032 */ 1033 1034 /* 1035 * The input clock frequency on the SoundScape must 1036 * be 14.31818 MHz, because we must set this register 1037 * to get the playback to sound correct ... 1038 */ 1039 snd_cs4231_mce_up(chip); 1040 spin_lock_irqsave(&chip->reg_lock, flags); 1041 snd_cs4231_out(chip, AD1845_CRYS_CLOCK_SEL, 0x20); 1042 spin_unlock_irqrestore(&chip->reg_lock, flags); 1043 snd_cs4231_mce_down(chip); 1044 1045 /* 1046 * More custom configuration: 1047 * a) select "mode 2", and provide a current drive of 8 mA 1048 * b) enable frequency selection (for capture/playback) 1049 */ 1050 spin_lock_irqsave(&chip->reg_lock, flags); 1051 snd_cs4231_out(chip, CS4231_MISC_INFO, (CS4231_MODE2 | 0x10)); 1052 snd_cs4231_out(chip, AD1845_PWR_DOWN_CTRL, snd_cs4231_in(chip, AD1845_PWR_DOWN_CTRL) | AD1845_FREQ_SEL_ENABLE); 1053 spin_unlock_irqrestore(&chip->reg_lock, flags); 1054 1055 if ((err = snd_cs4231_pcm(chip, 0, &pcm)) < 0) { 1056 snd_printk(KERN_ERR "sscape: No PCM device for AD1845 chip\n"); 1057 goto _error; 1058 } 1059 1060 if ((err = snd_cs4231_mixer(chip)) < 0) { 1061 snd_printk(KERN_ERR "sscape: No mixer device for AD1845 chip\n"); 1062 goto _error; 1063 } 1064 1065 if ((err = snd_ctl_add(card, snd_ctl_new1(&midi_mixer_ctl, chip))) < 0) { 1066 snd_printk(KERN_ERR "sscape: Could not create MIDI mixer control\n"); 1067 goto _error; 1068 } 1069 1070 strcpy(card->driver, "SoundScape"); 1071 strcpy(card->shortname, pcm->name); 1072 snprintf(card->longname, sizeof(card->longname), 1073 "%s at 0x%lx, IRQ %d, DMA %d\n", 1074 pcm->name, chip->port, chip->irq, chip->dma1); 1075 chip->set_playback_format = ad1845_playback_format; 1076 chip->set_capture_format = ad1845_capture_format; 1077 sscape->chip = chip; 1078 } 1079 1080 _error: 1081 return err; 1082} 1083 1084 1085/* 1086 * Create an ALSA soundcard entry for the SoundScape, using 1087 * the given list of port, IRQ and DMA resources. 1088 */ 1089static int __devinit create_sscape(int dev, struct snd_card **rcardp) 1090{ 1091 struct snd_card *card; 1092 register struct soundscape *sscape; 1093 register unsigned dma_cfg; 1094 unsigned irq_cfg; 1095 unsigned mpu_irq_cfg; 1096 unsigned xport; 1097 struct resource *io_res; 1098 unsigned long flags; 1099 int err; 1100 1101 /* 1102 * Check that the user didn't pass us garbage data ... 1103 */ 1104 irq_cfg = get_irq_config(irq[dev]); 1105 if (irq_cfg == INVALID_IRQ) { 1106 snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", irq[dev]); 1107 return -ENXIO; 1108 } 1109 1110 mpu_irq_cfg = get_irq_config(mpu_irq[dev]); 1111 if (mpu_irq_cfg == INVALID_IRQ) { 1112 printk(KERN_ERR "sscape: Invalid IRQ %d\n", mpu_irq[dev]); 1113 return -ENXIO; 1114 } 1115 xport = port[dev]; 1116 1117 /* 1118 * Grab IO ports that we will need to probe so that we 1119 * can detect and control this hardware ... 1120 */ 1121 if ((io_res = request_region(xport, 8, "SoundScape")) == NULL) { 1122 snd_printk(KERN_ERR "sscape: can't grab port 0x%x\n", xport); 1123 return -EBUSY; 1124 } 1125 1126 /* 1127 * Grab both DMA channels (OK, only one for now) ... 1128 */ 1129 if ((err = request_dma(dma[dev], "SoundScape")) < 0) { 1130 snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", dma[dev]); 1131 goto _release_region; 1132 } 1133 1134 /* 1135 * Create a new ALSA sound card entry, in anticipation 1136 * of detecting our hardware ... 1137 */ 1138 if ((card = snd_card_new(index[dev], id[dev], THIS_MODULE, 1139 sizeof(struct soundscape))) == NULL) { 1140 err = -ENOMEM; 1141 goto _release_dma; 1142 } 1143 1144 sscape = get_card_soundscape(card); 1145 spin_lock_init(&sscape->lock); 1146 spin_lock_init(&sscape->fwlock); 1147 sscape->io_res = io_res; 1148 sscape->io_base = xport; 1149 1150 if (!detect_sscape(sscape)) { 1151 printk(KERN_ERR "sscape: hardware not detected at 0x%x\n", sscape->io_base); 1152 err = -ENODEV; 1153 goto _release_card; 1154 } 1155 1156 printk(KERN_INFO "sscape: hardware detected at 0x%x, using IRQ %d, DMA %d\n", 1157 sscape->io_base, irq[dev], dma[dev]); 1158 1159 /* 1160 * Now create the hardware-specific device so that we can 1161 * load the microcode into the on-board processor. 1162 * We cannot use the MPU-401 MIDI system until this firmware 1163 * has been loaded into the card. 1164 */ 1165 if ((err = snd_hwdep_new(card, "MC68EC000", 0, &(sscape->hw))) < 0) { 1166 printk(KERN_ERR "sscape: Failed to create firmware device\n"); 1167 goto _release_card; 1168 } 1169 strlcpy(sscape->hw->name, "SoundScape M68K", sizeof(sscape->hw->name)); 1170 sscape->hw->name[sizeof(sscape->hw->name) - 1] = '\0'; 1171 sscape->hw->iface = SNDRV_HWDEP_IFACE_SSCAPE; 1172 sscape->hw->ops.open = sscape_hw_open; 1173 sscape->hw->ops.release = sscape_hw_release; 1174 sscape->hw->ops.ioctl = sscape_hw_ioctl; 1175 sscape->hw->private_data = sscape; 1176 1177 /* 1178 * Tell the on-board devices where their resources are (I think - 1179 * I can't be sure without a datasheet ... So many magic values!) 1180 */ 1181 spin_lock_irqsave(&sscape->lock, flags); 1182 1183 activate_ad1845_unsafe(sscape->io_base); 1184 1185 sscape_write_unsafe(sscape->io_base, GA_INTENA_REG, 0x00); /* disable */ 1186 sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2e); 1187 sscape_write_unsafe(sscape->io_base, GA_SMCFGB_REG, 0x00); 1188 1189 /* 1190 * Enable and configure the DMA channels ... 1191 */ 1192 sscape_write_unsafe(sscape->io_base, GA_DMACFG_REG, 0x50); 1193 dma_cfg = (sscape->ic_type == IC_ODIE ? 0x70 : 0x40); 1194 sscape_write_unsafe(sscape->io_base, GA_DMAA_REG, dma_cfg); 1195 sscape_write_unsafe(sscape->io_base, GA_DMAB_REG, 0x20); 1196 1197 sscape_write_unsafe(sscape->io_base, 1198 GA_INTCFG_REG, 0xf0 | (mpu_irq_cfg << 2) | mpu_irq_cfg); 1199 sscape_write_unsafe(sscape->io_base, 1200 GA_CDCFG_REG, 0x09 | DMA_8BIT | (dma[dev] << 4) | (irq_cfg << 1)); 1201 1202 spin_unlock_irqrestore(&sscape->lock, flags); 1203 1204 /* 1205 * We have now enabled the codec chip, and so we should 1206 * detect the AD1845 device ... 1207 */ 1208 if ((err = create_ad1845(card, CODEC_IO(xport), irq[dev], dma[dev])) < 0) { 1209 printk(KERN_ERR "sscape: No AD1845 device at 0x%x, IRQ %d\n", 1210 CODEC_IO(xport), irq[dev]); 1211 goto _release_card; 1212 } 1213#define MIDI_DEVNUM 0 1214 if ((err = create_mpu401(card, MIDI_DEVNUM, MPU401_IO(xport), mpu_irq[dev])) < 0) { 1215 printk(KERN_ERR "sscape: Failed to create MPU-401 device at 0x%x\n", 1216 MPU401_IO(xport)); 1217 goto _release_card; 1218 } 1219 1220 /* 1221 * Enable the master IRQ ... 1222 */ 1223 sscape_write(sscape, GA_INTENA_REG, 0x80); 1224 1225 /* 1226 * Initialize mixer 1227 */ 1228 sscape->midi_vol = 0; 1229 host_write_ctrl_unsafe(sscape->io_base, CMD_SET_MIDI_VOL, 100); 1230 host_write_ctrl_unsafe(sscape->io_base, 0, 100); 1231 host_write_ctrl_unsafe(sscape->io_base, CMD_XXX_MIDI_VOL, 100); 1232 1233 /* 1234 * Now that we have successfully created this sound card, 1235 * it is safe to store the pointer. 1236 * NOTE: we only register the sound card's "destructor" 1237 * function now that our "constructor" has completed. 1238 */ 1239 card->private_free = soundscape_free; 1240 *rcardp = card; 1241 1242 return 0; 1243 1244 _release_card: 1245 snd_card_free(card); 1246 1247 _release_dma: 1248 free_dma(dma[dev]); 1249 1250 _release_region: 1251 release_and_free_resource(io_res); 1252 1253 return err; 1254} 1255 1256 1257static int __devinit snd_sscape_match(struct device *pdev, unsigned int i) 1258{ 1259 /* 1260 * Make sure we were given ALL of the other parameters. 1261 */ 1262 if (port[i] == SNDRV_AUTO_PORT) 1263 return 0; 1264 1265 if (irq[i] == SNDRV_AUTO_IRQ || 1266 mpu_irq[i] == SNDRV_AUTO_IRQ || 1267 dma[i] == SNDRV_AUTO_DMA) { 1268 printk(KERN_INFO 1269 "sscape: insufficient parameters, need IO, IRQ, MPU-IRQ and DMA\n"); 1270 return 0; 1271 } 1272 1273 return 1; 1274} 1275 1276static int __devinit snd_sscape_probe(struct device *pdev, unsigned int dev) 1277{ 1278 struct snd_card *card; 1279 int ret; 1280 1281 dma[dev] &= 0x03; 1282 ret = create_sscape(dev, &card); 1283 if (ret < 0) 1284 return ret; 1285 snd_card_set_dev(card, pdev); 1286 if ((ret = snd_card_register(card)) < 0) { 1287 printk(KERN_ERR "sscape: Failed to register sound card\n"); 1288 return ret; 1289 } 1290 dev_set_drvdata(pdev, card); 1291 return 0; 1292} 1293 1294static int __devexit snd_sscape_remove(struct device *devptr, unsigned int dev) 1295{ 1296 snd_card_free(dev_get_drvdata(devptr)); 1297 dev_set_drvdata(devptr, NULL); 1298 return 0; 1299} 1300 1301#define DEV_NAME "sscape" 1302 1303static struct isa_driver snd_sscape_driver = { 1304 .match = snd_sscape_match, 1305 .probe = snd_sscape_probe, 1306 .remove = __devexit_p(snd_sscape_remove), 1307 .driver = { 1308 .name = DEV_NAME 1309 }, 1310}; 1311 1312#ifdef CONFIG_PNP 1313static inline int __devinit get_next_autoindex(int i) 1314{ 1315 while (i < SNDRV_CARDS && port[i] != SNDRV_AUTO_PORT) 1316 ++i; 1317 return i; 1318} 1319 1320 1321static int __devinit sscape_pnp_detect(struct pnp_card_link *pcard, 1322 const struct pnp_card_device_id *pid) 1323{ 1324 static int idx = 0; 1325 struct pnp_dev *dev; 1326 struct snd_card *card; 1327 int ret; 1328 1329 /* 1330 * Allow this function to fail *quietly* if all the ISA PnP 1331 * devices were configured using module parameters instead. 1332 */ 1333 if ((idx = get_next_autoindex(idx)) >= SNDRV_CARDS) 1334 return -ENOSPC; 1335 1336 /* 1337 * We have found a candidate ISA PnP card. Now we 1338 * have to check that it has the devices that we 1339 * expect it to have. 1340 * 1341 * We will NOT try and autoconfigure all of the resources 1342 * needed and then activate the card as we are assuming that 1343 * has already been done at boot-time using /proc/isapnp. 1344 * We shall simply try to give each active card the resources 1345 * that it wants. This is a sensible strategy for a modular 1346 * system where unused modules are unloaded regularly. 1347 * 1348 * This strategy is utterly useless if we compile the driver 1349 * into the kernel, of course. 1350 */ 1351 // printk(KERN_INFO "sscape: %s\n", card->name); 1352 1353 /* 1354 * Check that we still have room for another sound card ... 1355 */ 1356 dev = pnp_request_card_device(pcard, pid->devs[0].id, NULL); 1357 if (! dev) 1358 return -ENODEV; 1359 1360 if (!pnp_is_active(dev)) { 1361 if (pnp_activate_dev(dev) < 0) { 1362 printk(KERN_INFO "sscape: device is inactive\n"); 1363 return -EBUSY; 1364 } 1365 } 1366 1367 /* 1368 * Read the correct parameters off the ISA PnP bus ... 1369 */ 1370 port[idx] = pnp_port_start(dev, 0); 1371 irq[idx] = pnp_irq(dev, 0); 1372 mpu_irq[idx] = pnp_irq(dev, 1); 1373 dma[idx] = pnp_dma(dev, 0) & 0x03; 1374 1375 ret = create_sscape(idx, &card); 1376 if (ret < 0) 1377 return ret; 1378 snd_card_set_dev(card, &pcard->card->dev); 1379 if ((ret = snd_card_register(card)) < 0) { 1380 printk(KERN_ERR "sscape: Failed to register sound card\n"); 1381 snd_card_free(card); 1382 return ret; 1383 } 1384 1385 pnp_set_card_drvdata(pcard, card); 1386 ++idx; 1387 1388 return ret; 1389} 1390 1391static void __devexit sscape_pnp_remove(struct pnp_card_link * pcard) 1392{ 1393 snd_card_free(pnp_get_card_drvdata(pcard)); 1394 pnp_set_card_drvdata(pcard, NULL); 1395} 1396 1397static struct pnp_card_driver sscape_pnpc_driver = { 1398 .flags = PNP_DRIVER_RES_DO_NOT_CHANGE, 1399 .name = "sscape", 1400 .id_table = sscape_pnpids, 1401 .probe = sscape_pnp_detect, 1402 .remove = __devexit_p(sscape_pnp_remove), 1403}; 1404 1405#endif /* CONFIG_PNP */ 1406 1407static int __init sscape_init(void) 1408{ 1409 int err; 1410 1411 err = isa_register_driver(&snd_sscape_driver, SNDRV_CARDS); 1412#ifdef CONFIG_PNP 1413 if (!err) 1414 isa_registered = 1; 1415 1416 err = pnp_register_card_driver(&sscape_pnpc_driver); 1417 if (!err) 1418 pnp_registered = 1; 1419 1420 if (isa_registered) 1421 err = 0; 1422#endif 1423 return err; 1424} 1425 1426static void __exit sscape_exit(void) 1427{ 1428#ifdef CONFIG_PNP 1429 if (pnp_registered) 1430 pnp_unregister_card_driver(&sscape_pnpc_driver); 1431 if (isa_registered) 1432#endif 1433 isa_unregister_driver(&snd_sscape_driver); 1434} 1435 1436module_init(sscape_init); 1437module_exit(sscape_exit); 1438