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 char *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 snd_printd(KERN_DEBUG "vx_check_reg_bit: timeout, reg=%s, mask=0x%x, val=0x%x\n", reg_names[reg], mask, snd_vx_inb(chip, reg)); 56 return -EIO; 57 } 58 59 EXPORT_SYMBOL(snd_vx_check_reg_bit); 60 61 /* 62 * vx_send_irq_dsp - set command irq bit 63 * @num: the requested IRQ type, IRQ_XXX 64 * 65 * this triggers the specified IRQ request 66 * returns 0 if successful, or a negative error code. 67 * 68 */ 69 static int vx_send_irq_dsp(struct vx_core *chip, int num) 70 { 71 int nirq; 72 73 /* wait for Hc = 0 */ 74 if (snd_vx_check_reg_bit(chip, VX_CVR, CVR_HC, 0, 200) < 0) 75 return -EIO; 76 77 nirq = num; 78 if (vx_has_new_dsp(chip)) 79 nirq += VXP_IRQ_OFFSET; 80 vx_outb(chip, CVR, (nirq >> 1) | CVR_HC); 81 return 0; 82 } 83 84 85 /* 86 * vx_reset_chk - reset CHK bit on ISR 87 * 88 * returns 0 if successful, or a negative error code. 89 */ 90 static int vx_reset_chk(struct vx_core *chip) 91 { 92 /* Reset irq CHK */ 93 if (vx_send_irq_dsp(chip, IRQ_RESET_CHK) < 0) 94 return -EIO; 95 /* Wait until CHK = 0 */ 96 if (vx_check_isr(chip, ISR_CHK, 0, 200) < 0) 97 return -EIO; 98 return 0; 99 } 100 101 /* 102 * vx_transfer_end - terminate message transfer 103 * @cmd: IRQ message to send (IRQ_MESS_XXX_END) 104 * 105 * returns 0 if successful, or a negative error code. 106 * the error code can be VX-specific, retrieved via vx_get_error(). 107 * NB: call with mutex held! 108 */ 109 static int vx_transfer_end(struct vx_core *chip, int cmd) 110 { 111 int err; 112 113 if ((err = vx_reset_chk(chip)) < 0) 114 return err; 115 116 /* irq MESS_READ/WRITE_END */ 117 if ((err = vx_send_irq_dsp(chip, cmd)) < 0) 118 return err; 119 120 /* Wait CHK = 1 */ 121 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) 122 return err; 123 124 /* If error, Read RX */ 125 if ((err = vx_inb(chip, ISR)) & ISR_ERR) { 126 if ((err = vx_wait_for_rx_full(chip)) < 0) { 127 snd_printd(KERN_DEBUG "transfer_end: error in rx_full\n"); 128 return err; 129 } 130 err = vx_inb(chip, RXH) << 16; 131 err |= vx_inb(chip, RXM) << 8; 132 err |= vx_inb(chip, RXL); 133 snd_printd(KERN_DEBUG "transfer_end: error = 0x%x\n", err); 134 return -(VX_ERR_MASK | err); 135 } 136 return 0; 137 } 138 139 /* 140 * vx_read_status - return the status rmh 141 * @rmh: rmh record to store the status 142 * 143 * returns 0 if successful, or a negative error code. 144 * the error code can be VX-specific, retrieved via vx_get_error(). 145 * NB: call with mutex held! 146 */ 147 static int vx_read_status(struct vx_core *chip, struct vx_rmh *rmh) 148 { 149 int i, err, val, size; 150 151 /* no read necessary? */ 152 if (rmh->DspStat == RMH_SSIZE_FIXED && rmh->LgStat == 0) 153 return 0; 154 155 /* Wait for RX full (with timeout protection) 156 * The first word of status is in RX 157 */ 158 err = vx_wait_for_rx_full(chip); 159 if (err < 0) 160 return err; 161 162 /* Read RX */ 163 val = vx_inb(chip, RXH) << 16; 164 val |= vx_inb(chip, RXM) << 8; 165 val |= vx_inb(chip, RXL); 166 167 /* If status given by DSP, let's decode its size */ 168 switch (rmh->DspStat) { 169 case RMH_SSIZE_ARG: 170 size = val & 0xff; 171 rmh->Stat[0] = val & 0xffff00; 172 rmh->LgStat = size + 1; 173 break; 174 case RMH_SSIZE_MASK: 175 /* Let's count the arg numbers from a mask */ 176 rmh->Stat[0] = val; 177 size = 0; 178 while (val) { 179 if (val & 0x01) 180 size++; 181 val >>= 1; 182 } 183 rmh->LgStat = size + 1; 184 break; 185 default: 186 /* else retrieve the status length given by the driver */ 187 size = rmh->LgStat; 188 rmh->Stat[0] = val; /* Val is the status 1st word */ 189 size--; /* hence adjust remaining length */ 190 break; 191 } 192 193 if (size < 1) 194 return 0; 195 if (snd_BUG_ON(size >= SIZE_MAX_STATUS)) 196 return -EINVAL; 197 198 for (i = 1; i <= size; i++) { 199 /* trigger an irq MESS_WRITE_NEXT */ 200 err = vx_send_irq_dsp(chip, IRQ_MESS_WRITE_NEXT); 201 if (err < 0) 202 return err; 203 /* Wait for RX full (with timeout protection) */ 204 err = vx_wait_for_rx_full(chip); 205 if (err < 0) 206 return err; 207 rmh->Stat[i] = vx_inb(chip, RXH) << 16; 208 rmh->Stat[i] |= vx_inb(chip, RXM) << 8; 209 rmh->Stat[i] |= vx_inb(chip, RXL); 210 } 211 212 return vx_transfer_end(chip, IRQ_MESS_WRITE_END); 213 } 214 215 216 #define MASK_MORE_THAN_1_WORD_COMMAND 0x00008000 217 #define MASK_1_WORD_COMMAND 0x00ff7fff 218 219 /* 220 * vx_send_msg_nolock - send a DSP message and read back the status 221 * @rmh: the rmh record to send and receive 222 * 223 * returns 0 if successful, or a negative error code. 224 * the error code can be VX-specific, retrieved via vx_get_error(). 225 * 226 * this function doesn't call mutex lock at all. 227 */ 228 int vx_send_msg_nolock(struct vx_core *chip, struct vx_rmh *rmh) 229 { 230 int i, err; 231 232 if (chip->chip_status & VX_STAT_IS_STALE) 233 return -EBUSY; 234 235 if ((err = vx_reset_chk(chip)) < 0) { 236 snd_printd(KERN_DEBUG "vx_send_msg: vx_reset_chk error\n"); 237 return err; 238 } 239 240 #if 0 241 printk(KERN_DEBUG "rmh: cmd = 0x%06x, length = %d, stype = %d\n", 242 rmh->Cmd[0], rmh->LgCmd, rmh->DspStat); 243 if (rmh->LgCmd > 1) { 244 printk(KERN_DEBUG " "); 245 for (i = 1; i < rmh->LgCmd; i++) 246 printk(KERN_CONT "0x%06x ", rmh->Cmd[i]); 247 printk(KERN_CONT "\n"); 248 } 249 #endif 250 /* Check bit M is set according to length of the command */ 251 if (rmh->LgCmd > 1) 252 rmh->Cmd[0] |= MASK_MORE_THAN_1_WORD_COMMAND; 253 else 254 rmh->Cmd[0] &= MASK_1_WORD_COMMAND; 255 256 /* Wait for TX empty */ 257 if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) { 258 snd_printd(KERN_DEBUG "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 if ((err = vx_send_irq_dsp(chip, IRQ_MESSAGE)) < 0) { 269 snd_printd(KERN_DEBUG "vx_send_msg: send IRQ_MESSAGE error\n"); 270 return err; 271 } 272 273 /* Wait for CHK = 1 */ 274 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) 275 return err; 276 277 /* If error, get error value from RX */ 278 if (vx_inb(chip, ISR) & ISR_ERR) { 279 if ((err = vx_wait_for_rx_full(chip)) < 0) { 280 snd_printd(KERN_DEBUG "vx_send_msg: rx_full read error\n"); 281 return err; 282 } 283 err = vx_inb(chip, RXH) << 16; 284 err |= vx_inb(chip, RXM) << 8; 285 err |= vx_inb(chip, RXL); 286 snd_printd(KERN_DEBUG "msg got error = 0x%x at cmd[0]\n", err); 287 err = -(VX_ERR_MASK | err); 288 return err; 289 } 290 291 /* Send the other words */ 292 if (rmh->LgCmd > 1) { 293 for (i = 1; i < rmh->LgCmd; i++) { 294 /* Wait for TX ready */ 295 if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) { 296 snd_printd(KERN_DEBUG "vx_send_msg: tx_ready error\n"); 297 return err; 298 } 299 300 /* Write Cmd[i] */ 301 vx_outb(chip, TXH, (rmh->Cmd[i] >> 16) & 0xff); 302 vx_outb(chip, TXM, (rmh->Cmd[i] >> 8) & 0xff); 303 vx_outb(chip, TXL, rmh->Cmd[i] & 0xff); 304 305 /* Trigger irq MESS_READ_NEXT */ 306 if ((err = vx_send_irq_dsp(chip, IRQ_MESS_READ_NEXT)) < 0) { 307 snd_printd(KERN_DEBUG "vx_send_msg: IRQ_READ_NEXT error\n"); 308 return err; 309 } 310 } 311 /* Wait for TX empty */ 312 if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) { 313 snd_printd(KERN_DEBUG "vx_send_msg: TX_READY error\n"); 314 return err; 315 } 316 /* End of transfer */ 317 err = vx_transfer_end(chip, IRQ_MESS_READ_END); 318 if (err < 0) 319 return err; 320 } 321 322 return vx_read_status(chip, rmh); 323 } 324 325 326 /* 327 * vx_send_msg - send a DSP message with mutex 328 * @rmh: the rmh record to send and receive 329 * 330 * returns 0 if successful, or a negative error code. 331 * see vx_send_msg_nolock(). 332 */ 333 int vx_send_msg(struct vx_core *chip, struct vx_rmh *rmh) 334 { 335 int err; 336 337 mutex_lock(&chip->lock); 338 err = vx_send_msg_nolock(chip, rmh); 339 mutex_unlock(&chip->lock); 340 return err; 341 } 342 343 344 /* 345 * vx_send_rih_nolock - send an RIH to xilinx 346 * @cmd: the command to send 347 * 348 * returns 0 if successful, or a negative error code. 349 * the error code can be VX-specific, retrieved via vx_get_error(). 350 * 351 * this function doesn't call mutex at all. 352 * 353 * unlike RMH, no command is sent to DSP. 354 */ 355 int vx_send_rih_nolock(struct vx_core *chip, int cmd) 356 { 357 int err; 358 359 if (chip->chip_status & VX_STAT_IS_STALE) 360 return -EBUSY; 361 362 #if 0 363 printk(KERN_DEBUG "send_rih: cmd = 0x%x\n", cmd); 364 #endif 365 if ((err = vx_reset_chk(chip)) < 0) 366 return err; 367 /* send the IRQ */ 368 if ((err = vx_send_irq_dsp(chip, cmd)) < 0) 369 return err; 370 /* Wait CHK = 1 */ 371 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) 372 return err; 373 /* If error, read RX */ 374 if (vx_inb(chip, ISR) & ISR_ERR) { 375 if ((err = vx_wait_for_rx_full(chip)) < 0) 376 return err; 377 err = vx_inb(chip, RXH) << 16; 378 err |= vx_inb(chip, RXM) << 8; 379 err |= vx_inb(chip, RXL); 380 return -(VX_ERR_MASK | err); 381 } 382 return 0; 383 } 384 385 386 /* 387 * vx_send_rih - send an RIH with mutex 388 * @cmd: the command to send 389 * 390 * see vx_send_rih_nolock(). 391 */ 392 int vx_send_rih(struct vx_core *chip, int cmd) 393 { 394 int err; 395 396 mutex_lock(&chip->lock); 397 err = vx_send_rih_nolock(chip, cmd); 398 mutex_unlock(&chip->lock); 399 return err; 400 } 401 402 #define END_OF_RESET_WAIT_TIME 500 /* us */ 403 404 /** 405 * snd_vx_boot_xilinx - boot up the xilinx interface 406 * @chip: VX core instance 407 * @boot: the boot record to load 408 */ 409 int snd_vx_load_boot_image(struct vx_core *chip, const struct firmware *boot) 410 { 411 unsigned int i; 412 int no_fillup = vx_has_new_dsp(chip); 413 414 /* check the length of boot image */ 415 if (boot->size <= 0) 416 return -EINVAL; 417 if (boot->size % 3) 418 return -EINVAL; 419 #if 0 420 { 421 /* more strict check */ 422 unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2]; 423 if (boot->size != (c + 2) * 3) 424 return -EINVAL; 425 } 426 #endif 427 428 /* reset dsp */ 429 vx_reset_dsp(chip); 430 431 udelay(END_OF_RESET_WAIT_TIME); /* another wait? */ 432 433 /* download boot strap */ 434 for (i = 0; i < 0x600; i += 3) { 435 if (i >= boot->size) { 436 if (no_fillup) 437 break; 438 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { 439 snd_printk(KERN_ERR "dsp boot failed at %d\n", i); 440 return -EIO; 441 } 442 vx_outb(chip, TXH, 0); 443 vx_outb(chip, TXM, 0); 444 vx_outb(chip, TXL, 0); 445 } else { 446 const unsigned char *image = boot->data + i; 447 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { 448 snd_printk(KERN_ERR "dsp boot failed at %d\n", i); 449 return -EIO; 450 } 451 vx_outb(chip, TXH, image[0]); 452 vx_outb(chip, TXM, image[1]); 453 vx_outb(chip, TXL, image[2]); 454 } 455 } 456 return 0; 457 } 458 459 EXPORT_SYMBOL(snd_vx_load_boot_image); 460 461 /* 462 * vx_test_irq_src - query the source of interrupts 463 * 464 * called from irq handler only 465 */ 466 static int vx_test_irq_src(struct vx_core *chip, unsigned int *ret) 467 { 468 int err; 469 470 vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT); 471 mutex_lock(&chip->lock); 472 err = vx_send_msg_nolock(chip, &chip->irq_rmh); 473 if (err < 0) 474 *ret = 0; 475 else 476 *ret = chip->irq_rmh.Stat[0]; 477 mutex_unlock(&chip->lock); 478 return err; 479 } 480 481 482 /* 483 * snd_vx_threaded_irq_handler - threaded irq handler 484 */ 485 irqreturn_t snd_vx_threaded_irq_handler(int irq, void *dev) 486 { 487 struct vx_core *chip = dev; 488 unsigned int events; 489 490 if (chip->chip_status & VX_STAT_IS_STALE) 491 return IRQ_HANDLED; 492 493 if (vx_test_irq_src(chip, &events) < 0) 494 return IRQ_HANDLED; 495 496 #if 0 497 if (events & 0x000800) 498 printk(KERN_ERR "DSP Stream underrun ! IRQ events = 0x%x\n", events); 499 #endif 500 // printk(KERN_DEBUG "IRQ events = 0x%x\n", events); 501 502 /* We must prevent any application using this DSP 503 * and block any further request until the application 504 * either unregisters or reloads the DSP 505 */ 506 if (events & FATAL_DSP_ERROR) { 507 snd_printk(KERN_ERR "vx_core: fatal DSP error!!\n"); 508 return IRQ_HANDLED; 509 } 510 511 /* The start on time code conditions are filled (ie the time code 512 * received by the board is equal to one of those given to it). 513 */ 514 if (events & TIME_CODE_EVENT_PENDING) 515 ; /* so far, nothing to do yet */ 516 517 /* The frequency has changed on the board (UER mode). */ 518 if (events & FREQUENCY_CHANGE_EVENT_PENDING) 519 vx_change_frequency(chip); 520 521 /* update the pcm streams */ 522 vx_pcm_update_intr(chip, events); 523 return IRQ_HANDLED; 524 } 525 EXPORT_SYMBOL(snd_vx_threaded_irq_handler); 526 527 /** 528 * snd_vx_irq_handler - interrupt handler 529 * @irq: irq number 530 * @dev: VX core instance 531 */ 532 irqreturn_t snd_vx_irq_handler(int irq, void *dev) 533 { 534 struct vx_core *chip = dev; 535 536 if (! (chip->chip_status & VX_STAT_CHIP_INIT) || 537 (chip->chip_status & VX_STAT_IS_STALE)) 538 return IRQ_NONE; 539 if (! vx_test_and_ack(chip)) 540 return IRQ_WAKE_THREAD; 541 return IRQ_NONE; 542 } 543 544 EXPORT_SYMBOL(snd_vx_irq_handler); 545 546 /* 547 */ 548 static void vx_reset_board(struct vx_core *chip, int cold_reset) 549 { 550 if (snd_BUG_ON(!chip->ops->reset_board)) 551 return; 552 553 /* current source, later sync'ed with target */ 554 chip->audio_source = VX_AUDIO_SRC_LINE; 555 if (cold_reset) { 556 chip->audio_source_target = chip->audio_source; 557 chip->clock_source = INTERNAL_QUARTZ; 558 chip->clock_mode = VX_CLOCK_MODE_AUTO; 559 chip->freq = 48000; 560 chip->uer_detected = VX_UER_MODE_NOT_PRESENT; 561 chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF; 562 } 563 564 chip->ops->reset_board(chip, cold_reset); 565 566 vx_reset_codec(chip, cold_reset); 567 568 vx_set_internal_clock(chip, chip->freq); 569 570 /* Reset the DSP */ 571 vx_reset_dsp(chip); 572 573 if (vx_is_pcmcia(chip)) { 574 /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */ 575 vx_test_and_ack(chip); 576 vx_validate_irq(chip, 1); 577 } 578 579 /* init CBits */ 580 vx_set_iec958_status(chip, chip->uer_bits); 581 } 582 583 584 /* 585 * proc interface 586 */ 587 588 static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 589 { 590 struct vx_core *chip = entry->private_data; 591 static char *audio_src_vxp[] = { "Line", "Mic", "Digital" }; 592 static char *audio_src_vx2[] = { "Analog", "Analog", "Digital" }; 593 static char *clock_mode[] = { "Auto", "Internal", "External" }; 594 static char *clock_src[] = { "Internal", "External" }; 595 static char *uer_type[] = { "Consumer", "Professional", "Not Present" }; 596 597 snd_iprintf(buffer, "%s\n", chip->card->longname); 598 snd_iprintf(buffer, "Xilinx Firmware: %s\n", 599 chip->chip_status & VX_STAT_XILINX_LOADED ? "Loaded" : "No"); 600 snd_iprintf(buffer, "Device Initialized: %s\n", 601 chip->chip_status & VX_STAT_DEVICE_INIT ? "Yes" : "No"); 602 snd_iprintf(buffer, "DSP audio info:"); 603 if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME) 604 snd_iprintf(buffer, " realtime"); 605 if (chip->audio_info & VX_AUDIO_INFO_OFFLINE) 606 snd_iprintf(buffer, " offline"); 607 if (chip->audio_info & VX_AUDIO_INFO_MPEG1) 608 snd_iprintf(buffer, " mpeg1"); 609 if (chip->audio_info & VX_AUDIO_INFO_MPEG2) 610 snd_iprintf(buffer, " mpeg2"); 611 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8) 612 snd_iprintf(buffer, " linear8"); 613 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16) 614 snd_iprintf(buffer, " linear16"); 615 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24) 616 snd_iprintf(buffer, " linear24"); 617 snd_iprintf(buffer, "\n"); 618 snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ? 619 audio_src_vxp[chip->audio_source] : 620 audio_src_vx2[chip->audio_source]); 621 snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]); 622 snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]); 623 snd_iprintf(buffer, "Frequency: %d\n", chip->freq); 624 snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected); 625 snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]); 626 snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n", 627 chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size, 628 chip->ibl.granularity); 629 } 630 631 static void vx_proc_init(struct vx_core *chip) 632 { 633 snd_card_ro_proc_new(chip->card, "vx-status", chip, vx_proc_read); 634 } 635 636 637 /** 638 * snd_vx_dsp_boot - load the DSP boot 639 * @chip: VX core instance 640 * @boot: firmware data 641 */ 642 int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot) 643 { 644 int err; 645 int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT); 646 647 vx_reset_board(chip, cold_reset); 648 vx_validate_irq(chip, 0); 649 650 if ((err = snd_vx_load_boot_image(chip, boot)) < 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 if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) { 681 printk(KERN_ERR 682 "dsp loading error at position %d\n", i); 683 return err; 684 } 685 cptr = image; 686 csum ^= *cptr; 687 csum = (csum >> 24) | (csum << 8); 688 vx_outb(chip, TXH, *cptr++); 689 csum ^= *cptr; 690 csum = (csum >> 24) | (csum << 8); 691 vx_outb(chip, TXM, *cptr++); 692 csum ^= *cptr; 693 csum = (csum >> 24) | (csum << 8); 694 vx_outb(chip, TXL, *cptr++); 695 } 696 snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum); 697 698 msleep(200); 699 700 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) 701 return err; 702 703 vx_toggle_dac_mute(chip, 0); 704 705 vx_test_and_ack(chip); 706 vx_validate_irq(chip, 1); 707 708 return 0; 709 } 710 711 EXPORT_SYMBOL(snd_vx_dsp_load); 712 713 #ifdef CONFIG_PM 714 /* 715 * suspend 716 */ 717 int snd_vx_suspend(struct vx_core *chip) 718 { 719 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); 720 chip->chip_status |= VX_STAT_IN_SUSPEND; 721 722 return 0; 723 } 724 725 EXPORT_SYMBOL(snd_vx_suspend); 726 727 /* 728 * resume 729 */ 730 int snd_vx_resume(struct vx_core *chip) 731 { 732 int i, err; 733 734 chip->chip_status &= ~VX_STAT_CHIP_INIT; 735 736 for (i = 0; i < 4; i++) { 737 if (! chip->firmware[i]) 738 continue; 739 err = chip->ops->load_dsp(chip, i, chip->firmware[i]); 740 if (err < 0) { 741 snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i); 742 return -EIO; 743 } 744 } 745 746 chip->chip_status |= VX_STAT_CHIP_INIT; 747 chip->chip_status &= ~VX_STAT_IN_SUSPEND; 748 749 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); 750 return 0; 751 } 752 753 EXPORT_SYMBOL(snd_vx_resume); 754 #endif 755 756 /** 757 * snd_vx_create - constructor for struct vx_core 758 * @card: card instance 759 * @hw: hardware specific record 760 * @ops: VX ops pointer 761 * @extra_size: extra byte size to allocate appending to chip 762 * 763 * this function allocates the instance and prepare for the hardware 764 * initialization. 765 * 766 * return the instance pointer if successful, NULL in error. 767 */ 768 struct vx_core *snd_vx_create(struct snd_card *card, struct snd_vx_hardware *hw, 769 struct snd_vx_ops *ops, 770 int extra_size) 771 { 772 struct vx_core *chip; 773 774 if (snd_BUG_ON(!card || !hw || !ops)) 775 return NULL; 776 777 chip = kzalloc(sizeof(*chip) + extra_size, GFP_KERNEL); 778 if (! chip) 779 return NULL; 780 mutex_init(&chip->lock); 781 chip->irq = -1; 782 chip->hw = hw; 783 chip->type = hw->type; 784 chip->ops = ops; 785 mutex_init(&chip->mixer_mutex); 786 787 chip->card = card; 788 card->private_data = chip; 789 strcpy(card->driver, hw->name); 790 sprintf(card->shortname, "Digigram %s", hw->name); 791 792 vx_proc_init(chip); 793 794 return chip; 795 } 796 797 EXPORT_SYMBOL(snd_vx_create); 798