1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Driver for Digigram VX soundcards 4 * 5 * Hardware core part 6 * 7 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> 8 */ 9 10 #include <linux/delay.h> 11 #include <linux/slab.h> 12 #include <linux/interrupt.h> 13 #include <linux/init.h> 14 #include <linux/device.h> 15 #include <linux/firmware.h> 16 #include <linux/module.h> 17 #include <linux/io.h> 18 #include <sound/core.h> 19 #include <sound/pcm.h> 20 #include <sound/asoundef.h> 21 #include <sound/info.h> 22 #include <sound/vx_core.h> 23 #include "vx_cmd.h" 24 25 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); 26 MODULE_DESCRIPTION("Common routines for Digigram VX drivers"); 27 MODULE_LICENSE("GPL"); 28 29 30 /* 31 * vx_check_reg_bit - wait for the specified bit is set/reset on a register 32 * @reg: register to check 33 * @mask: bit mask 34 * @bit: resultant bit to be checked 35 * @time: time-out of loop in msec 36 * 37 * returns zero if a bit matches, or a negative error code. 38 */ 39 int snd_vx_check_reg_bit(struct vx_core *chip, int reg, int mask, int bit, int time) 40 { 41 unsigned long end_time = jiffies + (time * HZ + 999) / 1000; 42 static const char * const reg_names[VX_REG_MAX] = { 43 "ICR", "CVR", "ISR", "IVR", "RXH", "RXM", "RXL", 44 "DMA", "CDSP", "RFREQ", "RUER/V2", "DATA", "MEMIRQ", 45 "ACQ", "BIT0", "BIT1", "MIC0", "MIC1", "MIC2", 46 "MIC3", "INTCSR", "CNTRL", "GPIOC", 47 "LOFREQ", "HIFREQ", "CSUER", "RUER" 48 }; 49 50 do { 51 if ((snd_vx_inb(chip, reg) & mask) == bit) 52 return 0; 53 //msleep(10); 54 } while (time_after_eq(end_time, jiffies)); 55 dev_dbg(chip->card->dev, 56 "vx_check_reg_bit: timeout, reg=%s, mask=0x%x, val=0x%x\n", 57 reg_names[reg], mask, snd_vx_inb(chip, reg)); 58 return -EIO; 59 } 60 61 EXPORT_SYMBOL(snd_vx_check_reg_bit); 62 63 /* 64 * vx_send_irq_dsp - set command irq bit 65 * @num: the requested IRQ type, IRQ_XXX 66 * 67 * this triggers the specified IRQ request 68 * returns 0 if successful, or a negative error code. 69 * 70 */ 71 static int vx_send_irq_dsp(struct vx_core *chip, int num) 72 { 73 int nirq; 74 75 /* wait for Hc = 0 */ 76 if (snd_vx_check_reg_bit(chip, VX_CVR, CVR_HC, 0, 200) < 0) 77 return -EIO; 78 79 nirq = num; 80 if (vx_has_new_dsp(chip)) 81 nirq += VXP_IRQ_OFFSET; 82 vx_outb(chip, CVR, (nirq >> 1) | CVR_HC); 83 return 0; 84 } 85 86 87 /* 88 * vx_reset_chk - reset CHK bit on ISR 89 * 90 * returns 0 if successful, or a negative error code. 91 */ 92 static int vx_reset_chk(struct vx_core *chip) 93 { 94 /* Reset irq CHK */ 95 if (vx_send_irq_dsp(chip, IRQ_RESET_CHK) < 0) 96 return -EIO; 97 /* Wait until CHK = 0 */ 98 if (vx_check_isr(chip, ISR_CHK, 0, 200) < 0) 99 return -EIO; 100 return 0; 101 } 102 103 /* 104 * vx_transfer_end - terminate message transfer 105 * @cmd: IRQ message to send (IRQ_MESS_XXX_END) 106 * 107 * returns 0 if successful, or a negative error code. 108 * the error code can be VX-specific, retrieved via vx_get_error(). 109 * NB: call with mutex held! 110 */ 111 static int vx_transfer_end(struct vx_core *chip, int cmd) 112 { 113 int err; 114 115 err = vx_reset_chk(chip); 116 if (err < 0) 117 return err; 118 119 /* irq MESS_READ/WRITE_END */ 120 err = vx_send_irq_dsp(chip, cmd); 121 if (err < 0) 122 return err; 123 124 /* Wait CHK = 1 */ 125 err = vx_wait_isr_bit(chip, ISR_CHK); 126 if (err < 0) 127 return err; 128 129 /* If error, Read RX */ 130 err = vx_inb(chip, ISR); 131 if (err & ISR_ERR) { 132 err = vx_wait_for_rx_full(chip); 133 if (err < 0) { 134 dev_dbg(chip->card->dev, 135 "transfer_end: error in rx_full\n"); 136 return err; 137 } 138 err = vx_inb(chip, RXH) << 16; 139 err |= vx_inb(chip, RXM) << 8; 140 err |= vx_inb(chip, RXL); 141 dev_dbg(chip->card->dev, "transfer_end: error = 0x%x\n", err); 142 return -(VX_ERR_MASK | err); 143 } 144 return 0; 145 } 146 147 /* 148 * vx_read_status - return the status rmh 149 * @rmh: rmh record to store the status 150 * 151 * returns 0 if successful, or a negative error code. 152 * the error code can be VX-specific, retrieved via vx_get_error(). 153 * NB: call with mutex held! 154 */ 155 static int vx_read_status(struct vx_core *chip, struct vx_rmh *rmh) 156 { 157 int i, err, val, size; 158 159 /* no read necessary? */ 160 if (rmh->DspStat == RMH_SSIZE_FIXED && rmh->LgStat == 0) 161 return 0; 162 163 /* Wait for RX full (with timeout protection) 164 * The first word of status is in RX 165 */ 166 err = vx_wait_for_rx_full(chip); 167 if (err < 0) 168 return err; 169 170 /* Read RX */ 171 val = vx_inb(chip, RXH) << 16; 172 val |= vx_inb(chip, RXM) << 8; 173 val |= vx_inb(chip, RXL); 174 175 /* If status given by DSP, let's decode its size */ 176 switch (rmh->DspStat) { 177 case RMH_SSIZE_ARG: 178 size = val & 0xff; 179 rmh->Stat[0] = val & 0xffff00; 180 rmh->LgStat = size + 1; 181 break; 182 case RMH_SSIZE_MASK: 183 /* Let's count the arg numbers from a mask */ 184 rmh->Stat[0] = val; 185 size = 0; 186 while (val) { 187 if (val & 0x01) 188 size++; 189 val >>= 1; 190 } 191 rmh->LgStat = size + 1; 192 break; 193 default: 194 /* else retrieve the status length given by the driver */ 195 size = rmh->LgStat; 196 rmh->Stat[0] = val; /* Val is the status 1st word */ 197 size--; /* hence adjust remaining length */ 198 break; 199 } 200 201 if (size < 1) 202 return 0; 203 if (snd_BUG_ON(size >= SIZE_MAX_STATUS)) 204 return -EINVAL; 205 206 for (i = 1; i <= size; i++) { 207 /* trigger an irq MESS_WRITE_NEXT */ 208 err = vx_send_irq_dsp(chip, IRQ_MESS_WRITE_NEXT); 209 if (err < 0) 210 return err; 211 /* Wait for RX full (with timeout protection) */ 212 err = vx_wait_for_rx_full(chip); 213 if (err < 0) 214 return err; 215 rmh->Stat[i] = vx_inb(chip, RXH) << 16; 216 rmh->Stat[i] |= vx_inb(chip, RXM) << 8; 217 rmh->Stat[i] |= vx_inb(chip, RXL); 218 } 219 220 return vx_transfer_end(chip, IRQ_MESS_WRITE_END); 221 } 222 223 224 #define MASK_MORE_THAN_1_WORD_COMMAND 0x00008000 225 #define MASK_1_WORD_COMMAND 0x00ff7fff 226 227 /* 228 * vx_send_msg_nolock - send a DSP message and read back the status 229 * @rmh: the rmh record to send and receive 230 * 231 * returns 0 if successful, or a negative error code. 232 * the error code can be VX-specific, retrieved via vx_get_error(). 233 * 234 * this function doesn't call mutex lock at all. 235 */ 236 int vx_send_msg_nolock(struct vx_core *chip, struct vx_rmh *rmh) 237 { 238 int i, err; 239 240 if (chip->chip_status & VX_STAT_IS_STALE) 241 return -EBUSY; 242 243 err = vx_reset_chk(chip); 244 if (err < 0) { 245 dev_dbg(chip->card->dev, "vx_send_msg: vx_reset_chk error\n"); 246 return err; 247 } 248 249 /* Check bit M is set according to length of the command */ 250 if (rmh->LgCmd > 1) 251 rmh->Cmd[0] |= MASK_MORE_THAN_1_WORD_COMMAND; 252 else 253 rmh->Cmd[0] &= MASK_1_WORD_COMMAND; 254 255 /* Wait for TX empty */ 256 err = vx_wait_isr_bit(chip, ISR_TX_EMPTY); 257 if (err < 0) { 258 dev_dbg(chip->card->dev, "vx_send_msg: wait tx empty error\n"); 259 return err; 260 } 261 262 /* Write Cmd[0] */ 263 vx_outb(chip, TXH, (rmh->Cmd[0] >> 16) & 0xff); 264 vx_outb(chip, TXM, (rmh->Cmd[0] >> 8) & 0xff); 265 vx_outb(chip, TXL, rmh->Cmd[0] & 0xff); 266 267 /* Trigger irq MESSAGE */ 268 err = vx_send_irq_dsp(chip, IRQ_MESSAGE); 269 if (err < 0) { 270 dev_dbg(chip->card->dev, 271 "vx_send_msg: send IRQ_MESSAGE error\n"); 272 return err; 273 } 274 275 /* Wait for CHK = 1 */ 276 err = vx_wait_isr_bit(chip, ISR_CHK); 277 if (err < 0) 278 return err; 279 280 /* If error, get error value from RX */ 281 if (vx_inb(chip, ISR) & ISR_ERR) { 282 err = vx_wait_for_rx_full(chip); 283 if (err < 0) { 284 dev_dbg(chip->card->dev, 285 "vx_send_msg: rx_full read error\n"); 286 return err; 287 } 288 err = vx_inb(chip, RXH) << 16; 289 err |= vx_inb(chip, RXM) << 8; 290 err |= vx_inb(chip, RXL); 291 dev_dbg(chip->card->dev, 292 "msg got error = 0x%x at cmd[0]\n", err); 293 err = -(VX_ERR_MASK | err); 294 return err; 295 } 296 297 /* Send the other words */ 298 if (rmh->LgCmd > 1) { 299 for (i = 1; i < rmh->LgCmd; i++) { 300 /* Wait for TX ready */ 301 err = vx_wait_isr_bit(chip, ISR_TX_READY); 302 if (err < 0) { 303 dev_dbg(chip->card->dev, 304 "vx_send_msg: tx_ready error\n"); 305 return err; 306 } 307 308 /* Write Cmd[i] */ 309 vx_outb(chip, TXH, (rmh->Cmd[i] >> 16) & 0xff); 310 vx_outb(chip, TXM, (rmh->Cmd[i] >> 8) & 0xff); 311 vx_outb(chip, TXL, rmh->Cmd[i] & 0xff); 312 313 /* Trigger irq MESS_READ_NEXT */ 314 err = vx_send_irq_dsp(chip, IRQ_MESS_READ_NEXT); 315 if (err < 0) { 316 dev_dbg(chip->card->dev, 317 "vx_send_msg: IRQ_READ_NEXT error\n"); 318 return err; 319 } 320 } 321 /* Wait for TX empty */ 322 err = vx_wait_isr_bit(chip, ISR_TX_READY); 323 if (err < 0) { 324 dev_dbg(chip->card->dev, 325 "vx_send_msg: TX_READY error\n"); 326 return err; 327 } 328 /* End of transfer */ 329 err = vx_transfer_end(chip, IRQ_MESS_READ_END); 330 if (err < 0) 331 return err; 332 } 333 334 return vx_read_status(chip, rmh); 335 } 336 337 338 /* 339 * vx_send_msg - send a DSP message with mutex 340 * @rmh: the rmh record to send and receive 341 * 342 * returns 0 if successful, or a negative error code. 343 * see vx_send_msg_nolock(). 344 */ 345 int vx_send_msg(struct vx_core *chip, struct vx_rmh *rmh) 346 { 347 int err; 348 349 mutex_lock(&chip->lock); 350 err = vx_send_msg_nolock(chip, rmh); 351 mutex_unlock(&chip->lock); 352 return err; 353 } 354 355 356 /* 357 * vx_send_rih_nolock - send an RIH to xilinx 358 * @cmd: the command to send 359 * 360 * returns 0 if successful, or a negative error code. 361 * the error code can be VX-specific, retrieved via vx_get_error(). 362 * 363 * this function doesn't call mutex at all. 364 * 365 * unlike RMH, no command is sent to DSP. 366 */ 367 int vx_send_rih_nolock(struct vx_core *chip, int cmd) 368 { 369 int err; 370 371 if (chip->chip_status & VX_STAT_IS_STALE) 372 return -EBUSY; 373 374 err = vx_reset_chk(chip); 375 if (err < 0) 376 return err; 377 /* send the IRQ */ 378 err = vx_send_irq_dsp(chip, cmd); 379 if (err < 0) 380 return err; 381 /* Wait CHK = 1 */ 382 err = vx_wait_isr_bit(chip, ISR_CHK); 383 if (err < 0) 384 return err; 385 /* If error, read RX */ 386 if (vx_inb(chip, ISR) & ISR_ERR) { 387 err = vx_wait_for_rx_full(chip); 388 if (err < 0) 389 return err; 390 err = vx_inb(chip, RXH) << 16; 391 err |= vx_inb(chip, RXM) << 8; 392 err |= vx_inb(chip, RXL); 393 return -(VX_ERR_MASK | err); 394 } 395 return 0; 396 } 397 398 399 /* 400 * vx_send_rih - send an RIH with mutex 401 * @cmd: the command to send 402 * 403 * see vx_send_rih_nolock(). 404 */ 405 int vx_send_rih(struct vx_core *chip, int cmd) 406 { 407 int err; 408 409 mutex_lock(&chip->lock); 410 err = vx_send_rih_nolock(chip, cmd); 411 mutex_unlock(&chip->lock); 412 return err; 413 } 414 415 #define END_OF_RESET_WAIT_TIME 500 /* us */ 416 417 /** 418 * snd_vx_load_boot_image - boot up the xilinx interface 419 * @chip: VX core instance 420 * @boot: the boot record to load 421 */ 422 int snd_vx_load_boot_image(struct vx_core *chip, const struct firmware *boot) 423 { 424 unsigned int i; 425 int no_fillup = vx_has_new_dsp(chip); 426 427 /* check the length of boot image */ 428 if (boot->size <= 0) 429 return -EINVAL; 430 if (boot->size % 3) 431 return -EINVAL; 432 #if 0 433 { 434 /* more strict check */ 435 unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2]; 436 if (boot->size != (c + 2) * 3) 437 return -EINVAL; 438 } 439 #endif 440 441 /* reset dsp */ 442 vx_reset_dsp(chip); 443 444 udelay(END_OF_RESET_WAIT_TIME); /* another wait? */ 445 446 /* download boot strap */ 447 for (i = 0; i < 0x600; i += 3) { 448 if (i >= boot->size) { 449 if (no_fillup) 450 break; 451 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { 452 dev_err(chip->card->dev, "dsp boot failed at %d\n", i); 453 return -EIO; 454 } 455 vx_outb(chip, TXH, 0); 456 vx_outb(chip, TXM, 0); 457 vx_outb(chip, TXL, 0); 458 } else { 459 const unsigned char *image = boot->data + i; 460 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { 461 dev_err(chip->card->dev, "dsp boot failed at %d\n", i); 462 return -EIO; 463 } 464 vx_outb(chip, TXH, image[0]); 465 vx_outb(chip, TXM, image[1]); 466 vx_outb(chip, TXL, image[2]); 467 } 468 } 469 return 0; 470 } 471 472 EXPORT_SYMBOL(snd_vx_load_boot_image); 473 474 /* 475 * vx_test_irq_src - query the source of interrupts 476 * 477 * called from irq handler only 478 */ 479 static int vx_test_irq_src(struct vx_core *chip, unsigned int *ret) 480 { 481 int err; 482 483 vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT); 484 mutex_lock(&chip->lock); 485 err = vx_send_msg_nolock(chip, &chip->irq_rmh); 486 if (err < 0) 487 *ret = 0; 488 else 489 *ret = chip->irq_rmh.Stat[0]; 490 mutex_unlock(&chip->lock); 491 return err; 492 } 493 494 495 /* 496 * snd_vx_threaded_irq_handler - threaded irq handler 497 */ 498 irqreturn_t snd_vx_threaded_irq_handler(int irq, void *dev) 499 { 500 struct vx_core *chip = dev; 501 unsigned int events; 502 503 if (chip->chip_status & VX_STAT_IS_STALE) 504 return IRQ_HANDLED; 505 506 if (vx_test_irq_src(chip, &events) < 0) 507 return IRQ_HANDLED; 508 509 /* We must prevent any application using this DSP 510 * and block any further request until the application 511 * either unregisters or reloads the DSP 512 */ 513 if (events & FATAL_DSP_ERROR) { 514 dev_err(chip->card->dev, "vx_core: fatal DSP error!!\n"); 515 return IRQ_HANDLED; 516 } 517 518 /* The start on time code conditions are filled (ie the time code 519 * received by the board is equal to one of those given to it). 520 */ 521 if (events & TIME_CODE_EVENT_PENDING) { 522 ; /* so far, nothing to do yet */ 523 } 524 525 /* The frequency has changed on the board (UER mode). */ 526 if (events & FREQUENCY_CHANGE_EVENT_PENDING) 527 vx_change_frequency(chip); 528 529 /* update the pcm streams */ 530 vx_pcm_update_intr(chip, events); 531 return IRQ_HANDLED; 532 } 533 EXPORT_SYMBOL(snd_vx_threaded_irq_handler); 534 535 /** 536 * snd_vx_irq_handler - interrupt handler 537 * @irq: irq number 538 * @dev: VX core instance 539 */ 540 irqreturn_t snd_vx_irq_handler(int irq, void *dev) 541 { 542 struct vx_core *chip = dev; 543 544 if (! (chip->chip_status & VX_STAT_CHIP_INIT) || 545 (chip->chip_status & VX_STAT_IS_STALE)) 546 return IRQ_NONE; 547 if (! vx_test_and_ack(chip)) 548 return IRQ_WAKE_THREAD; 549 return IRQ_NONE; 550 } 551 552 EXPORT_SYMBOL(snd_vx_irq_handler); 553 554 /* 555 */ 556 static void vx_reset_board(struct vx_core *chip, int cold_reset) 557 { 558 if (snd_BUG_ON(!chip->ops->reset_board)) 559 return; 560 561 /* current source, later sync'ed with target */ 562 chip->audio_source = VX_AUDIO_SRC_LINE; 563 if (cold_reset) { 564 chip->audio_source_target = chip->audio_source; 565 chip->clock_source = INTERNAL_QUARTZ; 566 chip->clock_mode = VX_CLOCK_MODE_AUTO; 567 chip->freq = 48000; 568 chip->uer_detected = VX_UER_MODE_NOT_PRESENT; 569 chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF; 570 } 571 572 chip->ops->reset_board(chip, cold_reset); 573 574 vx_reset_codec(chip, cold_reset); 575 576 vx_set_internal_clock(chip, chip->freq); 577 578 /* Reset the DSP */ 579 vx_reset_dsp(chip); 580 581 if (vx_is_pcmcia(chip)) { 582 /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */ 583 vx_test_and_ack(chip); 584 vx_validate_irq(chip, 1); 585 } 586 587 /* init CBits */ 588 vx_set_iec958_status(chip, chip->uer_bits); 589 } 590 591 592 /* 593 * proc interface 594 */ 595 596 static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 597 { 598 struct vx_core *chip = entry->private_data; 599 static const char * const audio_src_vxp[] = { "Line", "Mic", "Digital" }; 600 static const char * const audio_src_vx2[] = { "Analog", "Analog", "Digital" }; 601 static const char * const clock_mode[] = { "Auto", "Internal", "External" }; 602 static const char * const clock_src[] = { "Internal", "External" }; 603 static const char * const uer_type[] = { "Consumer", "Professional", "Not Present" }; 604 605 snd_iprintf(buffer, "%s\n", chip->card->longname); 606 snd_iprintf(buffer, "Xilinx Firmware: %s\n", 607 (chip->chip_status & VX_STAT_XILINX_LOADED) ? "Loaded" : "No"); 608 snd_iprintf(buffer, "Device Initialized: %s\n", 609 (chip->chip_status & VX_STAT_DEVICE_INIT) ? "Yes" : "No"); 610 snd_iprintf(buffer, "DSP audio info:"); 611 if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME) 612 snd_iprintf(buffer, " realtime"); 613 if (chip->audio_info & VX_AUDIO_INFO_OFFLINE) 614 snd_iprintf(buffer, " offline"); 615 if (chip->audio_info & VX_AUDIO_INFO_MPEG1) 616 snd_iprintf(buffer, " mpeg1"); 617 if (chip->audio_info & VX_AUDIO_INFO_MPEG2) 618 snd_iprintf(buffer, " mpeg2"); 619 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8) 620 snd_iprintf(buffer, " linear8"); 621 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16) 622 snd_iprintf(buffer, " linear16"); 623 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24) 624 snd_iprintf(buffer, " linear24"); 625 snd_iprintf(buffer, "\n"); 626 snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ? 627 audio_src_vxp[chip->audio_source] : 628 audio_src_vx2[chip->audio_source]); 629 snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]); 630 snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]); 631 snd_iprintf(buffer, "Frequency: %d\n", chip->freq); 632 snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected); 633 snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]); 634 snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n", 635 chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size, 636 chip->ibl.granularity); 637 } 638 639 static void vx_proc_init(struct vx_core *chip) 640 { 641 snd_card_ro_proc_new(chip->card, "vx-status", chip, vx_proc_read); 642 } 643 644 645 /** 646 * snd_vx_dsp_boot - load the DSP boot 647 * @chip: VX core instance 648 * @boot: firmware data 649 */ 650 int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot) 651 { 652 int err; 653 int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT); 654 655 vx_reset_board(chip, cold_reset); 656 vx_validate_irq(chip, 0); 657 658 err = snd_vx_load_boot_image(chip, boot); 659 if (err < 0) 660 return err; 661 msleep(10); 662 663 return 0; 664 } 665 666 EXPORT_SYMBOL(snd_vx_dsp_boot); 667 668 /** 669 * snd_vx_dsp_load - load the DSP image 670 * @chip: VX core instance 671 * @dsp: firmware data 672 */ 673 int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp) 674 { 675 unsigned int i; 676 int err; 677 unsigned int csum = 0; 678 const unsigned char *image, *cptr; 679 680 if (dsp->size % 3) 681 return -EINVAL; 682 683 vx_toggle_dac_mute(chip, 1); 684 685 /* Transfert data buffer from PC to DSP */ 686 for (i = 0; i < dsp->size; i += 3) { 687 image = dsp->data + i; 688 /* Wait DSP ready for a new read */ 689 err = vx_wait_isr_bit(chip, ISR_TX_EMPTY); 690 if (err < 0) { 691 dev_err(chip->card->dev, 692 "dsp loading error at position %d\n", i); 693 return err; 694 } 695 cptr = image; 696 csum ^= *cptr; 697 csum = (csum >> 24) | (csum << 8); 698 vx_outb(chip, TXH, *cptr++); 699 csum ^= *cptr; 700 csum = (csum >> 24) | (csum << 8); 701 vx_outb(chip, TXM, *cptr++); 702 csum ^= *cptr; 703 csum = (csum >> 24) | (csum << 8); 704 vx_outb(chip, TXL, *cptr++); 705 } 706 707 msleep(200); 708 709 err = vx_wait_isr_bit(chip, ISR_CHK); 710 if (err < 0) 711 return err; 712 713 vx_toggle_dac_mute(chip, 0); 714 715 vx_test_and_ack(chip); 716 vx_validate_irq(chip, 1); 717 718 return 0; 719 } 720 721 EXPORT_SYMBOL(snd_vx_dsp_load); 722 723 #ifdef CONFIG_PM 724 /* 725 * suspend 726 */ 727 int snd_vx_suspend(struct vx_core *chip) 728 { 729 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); 730 chip->chip_status |= VX_STAT_IN_SUSPEND; 731 732 return 0; 733 } 734 735 EXPORT_SYMBOL(snd_vx_suspend); 736 737 /* 738 * resume 739 */ 740 int snd_vx_resume(struct vx_core *chip) 741 { 742 int i, err; 743 744 chip->chip_status &= ~VX_STAT_CHIP_INIT; 745 746 for (i = 0; i < 4; i++) { 747 if (! chip->firmware[i]) 748 continue; 749 err = chip->ops->load_dsp(chip, i, chip->firmware[i]); 750 if (err < 0) { 751 dev_err(chip->card->dev, 752 "vx: firmware resume error at DSP %d\n", i); 753 return -EIO; 754 } 755 } 756 757 chip->chip_status |= VX_STAT_CHIP_INIT; 758 chip->chip_status &= ~VX_STAT_IN_SUSPEND; 759 760 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); 761 return 0; 762 } 763 764 EXPORT_SYMBOL(snd_vx_resume); 765 #endif 766 767 static void snd_vx_release(struct device *dev, void *data) 768 { 769 snd_vx_free_firmware(data); 770 } 771 772 /** 773 * snd_vx_create - constructor for struct vx_core 774 * @card: card instance 775 * @hw: hardware specific record 776 * @ops: VX ops pointer 777 * @extra_size: extra byte size to allocate appending to chip 778 * 779 * this function allocates the instance and prepare for the hardware 780 * initialization. 781 * 782 * The object is managed via devres, and will be automatically released. 783 * 784 * return the instance pointer if successful, NULL in error. 785 */ 786 struct vx_core *snd_vx_create(struct snd_card *card, 787 const struct snd_vx_hardware *hw, 788 const struct snd_vx_ops *ops, 789 int extra_size) 790 { 791 struct vx_core *chip; 792 793 if (snd_BUG_ON(!card || !hw || !ops)) 794 return NULL; 795 796 chip = devres_alloc(snd_vx_release, sizeof(*chip) + extra_size, 797 GFP_KERNEL); 798 if (!chip) 799 return NULL; 800 mutex_init(&chip->lock); 801 chip->irq = -1; 802 chip->hw = hw; 803 chip->type = hw->type; 804 chip->ops = ops; 805 mutex_init(&chip->mixer_mutex); 806 807 chip->card = card; 808 card->private_data = chip; 809 strcpy(card->driver, hw->name); 810 sprintf(card->shortname, "Digigram %s", hw->name); 811 812 vx_proc_init(chip); 813 814 return chip; 815 } 816 817 EXPORT_SYMBOL(snd_vx_create); 818