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 guard(mutex)(&chip->lock); 348 return vx_send_msg_nolock(chip, rmh); 349 } 350 351 352 /* 353 * vx_send_rih_nolock - send an RIH to xilinx 354 * @cmd: the command to send 355 * 356 * returns 0 if successful, or a negative error code. 357 * the error code can be VX-specific, retrieved via vx_get_error(). 358 * 359 * this function doesn't call mutex at all. 360 * 361 * unlike RMH, no command is sent to DSP. 362 */ 363 int vx_send_rih_nolock(struct vx_core *chip, int cmd) 364 { 365 int err; 366 367 if (chip->chip_status & VX_STAT_IS_STALE) 368 return -EBUSY; 369 370 err = vx_reset_chk(chip); 371 if (err < 0) 372 return err; 373 /* send the IRQ */ 374 err = vx_send_irq_dsp(chip, cmd); 375 if (err < 0) 376 return err; 377 /* Wait CHK = 1 */ 378 err = vx_wait_isr_bit(chip, ISR_CHK); 379 if (err < 0) 380 return err; 381 /* If error, read RX */ 382 if (vx_inb(chip, ISR) & ISR_ERR) { 383 err = vx_wait_for_rx_full(chip); 384 if (err < 0) 385 return err; 386 err = vx_inb(chip, RXH) << 16; 387 err |= vx_inb(chip, RXM) << 8; 388 err |= vx_inb(chip, RXL); 389 return -(VX_ERR_MASK | err); 390 } 391 return 0; 392 } 393 394 395 /* 396 * vx_send_rih - send an RIH with mutex 397 * @cmd: the command to send 398 * 399 * see vx_send_rih_nolock(). 400 */ 401 int vx_send_rih(struct vx_core *chip, int cmd) 402 { 403 guard(mutex)(&chip->lock); 404 return vx_send_rih_nolock(chip, cmd); 405 } 406 407 #define END_OF_RESET_WAIT_TIME 500 /* us */ 408 409 /** 410 * snd_vx_load_boot_image - boot up the xilinx interface 411 * @chip: VX core instance 412 * @boot: the boot record to load 413 */ 414 int snd_vx_load_boot_image(struct vx_core *chip, const struct firmware *boot) 415 { 416 unsigned int i; 417 int no_fillup = vx_has_new_dsp(chip); 418 419 /* check the length of boot image */ 420 if (boot->size <= 0) 421 return -EINVAL; 422 if (boot->size % 3) 423 return -EINVAL; 424 #if 0 425 { 426 /* more strict check */ 427 unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2]; 428 if (boot->size != (c + 2) * 3) 429 return -EINVAL; 430 } 431 #endif 432 433 /* reset dsp */ 434 vx_reset_dsp(chip); 435 436 udelay(END_OF_RESET_WAIT_TIME); /* another wait? */ 437 438 /* download boot strap */ 439 for (i = 0; i < 0x600; i += 3) { 440 if (i >= boot->size) { 441 if (no_fillup) 442 break; 443 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { 444 dev_err(chip->card->dev, "dsp boot failed at %d\n", i); 445 return -EIO; 446 } 447 vx_outb(chip, TXH, 0); 448 vx_outb(chip, TXM, 0); 449 vx_outb(chip, TXL, 0); 450 } else { 451 const unsigned char *image = boot->data + i; 452 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { 453 dev_err(chip->card->dev, "dsp boot failed at %d\n", i); 454 return -EIO; 455 } 456 vx_outb(chip, TXH, image[0]); 457 vx_outb(chip, TXM, image[1]); 458 vx_outb(chip, TXL, image[2]); 459 } 460 } 461 return 0; 462 } 463 464 EXPORT_SYMBOL(snd_vx_load_boot_image); 465 466 /* 467 * vx_test_irq_src - query the source of interrupts 468 * 469 * called from irq handler only 470 */ 471 static int vx_test_irq_src(struct vx_core *chip, unsigned int *ret) 472 { 473 int err; 474 475 vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT); 476 guard(mutex)(&chip->lock); 477 err = vx_send_msg_nolock(chip, &chip->irq_rmh); 478 if (err < 0) 479 *ret = 0; 480 else 481 *ret = chip->irq_rmh.Stat[0]; 482 return err; 483 } 484 485 486 /* 487 * snd_vx_threaded_irq_handler - threaded irq handler 488 */ 489 irqreturn_t snd_vx_threaded_irq_handler(int irq, void *dev) 490 { 491 struct vx_core *chip = dev; 492 unsigned int events; 493 494 if (chip->chip_status & VX_STAT_IS_STALE) 495 return IRQ_HANDLED; 496 497 if (vx_test_irq_src(chip, &events) < 0) 498 return IRQ_HANDLED; 499 500 /* We must prevent any application using this DSP 501 * and block any further request until the application 502 * either unregisters or reloads the DSP 503 */ 504 if (events & FATAL_DSP_ERROR) { 505 dev_err(chip->card->dev, "vx_core: fatal DSP error!!\n"); 506 return IRQ_HANDLED; 507 } 508 509 /* The start on time code conditions are filled (ie the time code 510 * received by the board is equal to one of those given to it). 511 */ 512 if (events & TIME_CODE_EVENT_PENDING) { 513 ; /* so far, nothing to do yet */ 514 } 515 516 /* The frequency has changed on the board (UER mode). */ 517 if (events & FREQUENCY_CHANGE_EVENT_PENDING) 518 vx_change_frequency(chip); 519 520 /* update the pcm streams */ 521 vx_pcm_update_intr(chip, events); 522 return IRQ_HANDLED; 523 } 524 EXPORT_SYMBOL(snd_vx_threaded_irq_handler); 525 526 /** 527 * snd_vx_irq_handler - interrupt handler 528 * @irq: irq number 529 * @dev: VX core instance 530 */ 531 irqreturn_t snd_vx_irq_handler(int irq, void *dev) 532 { 533 struct vx_core *chip = dev; 534 535 if (! (chip->chip_status & VX_STAT_CHIP_INIT) || 536 (chip->chip_status & VX_STAT_IS_STALE)) 537 return IRQ_NONE; 538 if (! vx_test_and_ack(chip)) 539 return IRQ_WAKE_THREAD; 540 return IRQ_NONE; 541 } 542 543 EXPORT_SYMBOL(snd_vx_irq_handler); 544 545 /* 546 */ 547 static void vx_reset_board(struct vx_core *chip, int cold_reset) 548 { 549 if (snd_BUG_ON(!chip->ops->reset_board)) 550 return; 551 552 /* current source, later sync'ed with target */ 553 chip->audio_source = VX_AUDIO_SRC_LINE; 554 if (cold_reset) { 555 chip->audio_source_target = chip->audio_source; 556 chip->clock_source = INTERNAL_QUARTZ; 557 chip->clock_mode = VX_CLOCK_MODE_AUTO; 558 chip->freq = 48000; 559 chip->uer_detected = VX_UER_MODE_NOT_PRESENT; 560 chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF; 561 } 562 563 chip->ops->reset_board(chip, cold_reset); 564 565 vx_reset_codec(chip, cold_reset); 566 567 vx_set_internal_clock(chip, chip->freq); 568 569 /* Reset the DSP */ 570 vx_reset_dsp(chip); 571 572 if (vx_is_pcmcia(chip)) { 573 /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */ 574 vx_test_and_ack(chip); 575 vx_validate_irq(chip, 1); 576 } 577 578 /* init CBits */ 579 vx_set_iec958_status(chip, chip->uer_bits); 580 } 581 582 583 /* 584 * proc interface 585 */ 586 587 static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 588 { 589 struct vx_core *chip = entry->private_data; 590 static const char * const audio_src_vxp[] = { "Line", "Mic", "Digital" }; 591 static const char * const audio_src_vx2[] = { "Analog", "Analog", "Digital" }; 592 static const char * const clock_mode[] = { "Auto", "Internal", "External" }; 593 static const char * const clock_src[] = { "Internal", "External" }; 594 static const char * const uer_type[] = { "Consumer", "Professional", "Not Present" }; 595 596 snd_iprintf(buffer, "%s\n", chip->card->longname); 597 snd_iprintf(buffer, "Xilinx Firmware: %s\n", 598 (chip->chip_status & VX_STAT_XILINX_LOADED) ? "Loaded" : "No"); 599 snd_iprintf(buffer, "Device Initialized: %s\n", 600 (chip->chip_status & VX_STAT_DEVICE_INIT) ? "Yes" : "No"); 601 snd_iprintf(buffer, "DSP audio info:"); 602 if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME) 603 snd_iprintf(buffer, " realtime"); 604 if (chip->audio_info & VX_AUDIO_INFO_OFFLINE) 605 snd_iprintf(buffer, " offline"); 606 if (chip->audio_info & VX_AUDIO_INFO_MPEG1) 607 snd_iprintf(buffer, " mpeg1"); 608 if (chip->audio_info & VX_AUDIO_INFO_MPEG2) 609 snd_iprintf(buffer, " mpeg2"); 610 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8) 611 snd_iprintf(buffer, " linear8"); 612 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16) 613 snd_iprintf(buffer, " linear16"); 614 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24) 615 snd_iprintf(buffer, " linear24"); 616 snd_iprintf(buffer, "\n"); 617 snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ? 618 audio_src_vxp[chip->audio_source] : 619 audio_src_vx2[chip->audio_source]); 620 snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]); 621 snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]); 622 snd_iprintf(buffer, "Frequency: %d\n", chip->freq); 623 snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected); 624 snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]); 625 snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n", 626 chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size, 627 chip->ibl.granularity); 628 } 629 630 static void vx_proc_init(struct vx_core *chip) 631 { 632 snd_card_ro_proc_new(chip->card, "vx-status", chip, vx_proc_read); 633 } 634 635 636 /** 637 * snd_vx_dsp_boot - load the DSP boot 638 * @chip: VX core instance 639 * @boot: firmware data 640 */ 641 int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot) 642 { 643 int err; 644 int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT); 645 646 vx_reset_board(chip, cold_reset); 647 vx_validate_irq(chip, 0); 648 649 err = snd_vx_load_boot_image(chip, boot); 650 if (err < 0) 651 return err; 652 msleep(10); 653 654 return 0; 655 } 656 657 EXPORT_SYMBOL(snd_vx_dsp_boot); 658 659 /** 660 * snd_vx_dsp_load - load the DSP image 661 * @chip: VX core instance 662 * @dsp: firmware data 663 */ 664 int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp) 665 { 666 unsigned int i; 667 int err; 668 unsigned int csum = 0; 669 const unsigned char *image, *cptr; 670 671 if (dsp->size % 3) 672 return -EINVAL; 673 674 vx_toggle_dac_mute(chip, 1); 675 676 /* Transfert data buffer from PC to DSP */ 677 for (i = 0; i < dsp->size; i += 3) { 678 image = dsp->data + i; 679 /* Wait DSP ready for a new read */ 680 err = vx_wait_isr_bit(chip, ISR_TX_EMPTY); 681 if (err < 0) { 682 dev_err(chip->card->dev, 683 "dsp loading error at position %d\n", i); 684 return err; 685 } 686 cptr = image; 687 csum ^= *cptr; 688 csum = (csum >> 24) | (csum << 8); 689 vx_outb(chip, TXH, *cptr++); 690 csum ^= *cptr; 691 csum = (csum >> 24) | (csum << 8); 692 vx_outb(chip, TXM, *cptr++); 693 csum ^= *cptr; 694 csum = (csum >> 24) | (csum << 8); 695 vx_outb(chip, TXL, *cptr++); 696 } 697 698 msleep(200); 699 700 err = vx_wait_isr_bit(chip, ISR_CHK); 701 if (err < 0) 702 return err; 703 704 vx_toggle_dac_mute(chip, 0); 705 706 vx_test_and_ack(chip); 707 vx_validate_irq(chip, 1); 708 709 return 0; 710 } 711 712 EXPORT_SYMBOL(snd_vx_dsp_load); 713 714 #ifdef CONFIG_PM 715 /* 716 * suspend 717 */ 718 int snd_vx_suspend(struct vx_core *chip) 719 { 720 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); 721 chip->chip_status |= VX_STAT_IN_SUSPEND; 722 723 return 0; 724 } 725 726 EXPORT_SYMBOL(snd_vx_suspend); 727 728 /* 729 * resume 730 */ 731 int snd_vx_resume(struct vx_core *chip) 732 { 733 int i, err; 734 735 chip->chip_status &= ~VX_STAT_CHIP_INIT; 736 737 for (i = 0; i < 4; i++) { 738 if (! chip->firmware[i]) 739 continue; 740 err = chip->ops->load_dsp(chip, i, chip->firmware[i]); 741 if (err < 0) { 742 dev_err(chip->card->dev, 743 "vx: firmware resume error at DSP %d\n", i); 744 return -EIO; 745 } 746 } 747 748 chip->chip_status |= VX_STAT_CHIP_INIT; 749 chip->chip_status &= ~VX_STAT_IN_SUSPEND; 750 751 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); 752 return 0; 753 } 754 755 EXPORT_SYMBOL(snd_vx_resume); 756 #endif 757 758 static void snd_vx_release(struct device *dev, void *data) 759 { 760 snd_vx_free_firmware(data); 761 } 762 763 /** 764 * snd_vx_create - constructor for struct vx_core 765 * @card: card instance 766 * @hw: hardware specific record 767 * @ops: VX ops pointer 768 * @extra_size: extra byte size to allocate appending to chip 769 * 770 * this function allocates the instance and prepare for the hardware 771 * initialization. 772 * 773 * The object is managed via devres, and will be automatically released. 774 * 775 * return the instance pointer if successful, NULL in error. 776 */ 777 struct vx_core *snd_vx_create(struct snd_card *card, 778 const struct snd_vx_hardware *hw, 779 const struct snd_vx_ops *ops, 780 int extra_size) 781 { 782 struct vx_core *chip; 783 784 if (snd_BUG_ON(!card || !hw || !ops)) 785 return NULL; 786 787 chip = devres_alloc(snd_vx_release, sizeof(*chip) + extra_size, 788 GFP_KERNEL); 789 if (!chip) 790 return NULL; 791 mutex_init(&chip->lock); 792 chip->irq = -1; 793 chip->hw = hw; 794 chip->type = hw->type; 795 chip->ops = ops; 796 mutex_init(&chip->mixer_mutex); 797 798 chip->card = card; 799 card->private_data = chip; 800 strscpy(card->driver, hw->name); 801 sprintf(card->shortname, "Digigram %s", hw->name); 802 803 vx_proc_init(chip); 804 805 return chip; 806 } 807 808 EXPORT_SYMBOL(snd_vx_create); 809