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 25MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); 26MODULE_DESCRIPTION("Common routines for Digigram VX drivers"); 27MODULE_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 */ 39int 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 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 59EXPORT_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 */ 69static 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 */ 90static 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 */ 109static int vx_transfer_end(struct vx_core *chip, int cmd) 110{ 111 int err; 112 113 err = vx_reset_chk(chip); 114 if (err < 0) 115 return err; 116 117 /* irq MESS_READ/WRITE_END */ 118 err = vx_send_irq_dsp(chip, cmd); 119 if (err < 0) 120 return err; 121 122 /* Wait CHK = 1 */ 123 err = vx_wait_isr_bit(chip, ISR_CHK); 124 if (err < 0) 125 return err; 126 127 /* If error, Read RX */ 128 err = vx_inb(chip, ISR); 129 if (err & ISR_ERR) { 130 err = vx_wait_for_rx_full(chip); 131 if (err < 0) { 132 snd_printd(KERN_DEBUG "transfer_end: error in rx_full\n"); 133 return err; 134 } 135 err = vx_inb(chip, RXH) << 16; 136 err |= vx_inb(chip, RXM) << 8; 137 err |= vx_inb(chip, RXL); 138 snd_printd(KERN_DEBUG "transfer_end: error = 0x%x\n", err); 139 return -(VX_ERR_MASK | err); 140 } 141 return 0; 142} 143 144/* 145 * vx_read_status - return the status rmh 146 * @rmh: rmh record to store the status 147 * 148 * returns 0 if successful, or a negative error code. 149 * the error code can be VX-specific, retrieved via vx_get_error(). 150 * NB: call with mutex held! 151 */ 152static int vx_read_status(struct vx_core *chip, struct vx_rmh *rmh) 153{ 154 int i, err, val, size; 155 156 /* no read necessary? */ 157 if (rmh->DspStat == RMH_SSIZE_FIXED && rmh->LgStat == 0) 158 return 0; 159 160 /* Wait for RX full (with timeout protection) 161 * The first word of status is in RX 162 */ 163 err = vx_wait_for_rx_full(chip); 164 if (err < 0) 165 return err; 166 167 /* Read RX */ 168 val = vx_inb(chip, RXH) << 16; 169 val |= vx_inb(chip, RXM) << 8; 170 val |= vx_inb(chip, RXL); 171 172 /* If status given by DSP, let's decode its size */ 173 switch (rmh->DspStat) { 174 case RMH_SSIZE_ARG: 175 size = val & 0xff; 176 rmh->Stat[0] = val & 0xffff00; 177 rmh->LgStat = size + 1; 178 break; 179 case RMH_SSIZE_MASK: 180 /* Let's count the arg numbers from a mask */ 181 rmh->Stat[0] = val; 182 size = 0; 183 while (val) { 184 if (val & 0x01) 185 size++; 186 val >>= 1; 187 } 188 rmh->LgStat = size + 1; 189 break; 190 default: 191 /* else retrieve the status length given by the driver */ 192 size = rmh->LgStat; 193 rmh->Stat[0] = val; /* Val is the status 1st word */ 194 size--; /* hence adjust remaining length */ 195 break; 196 } 197 198 if (size < 1) 199 return 0; 200 if (snd_BUG_ON(size >= SIZE_MAX_STATUS)) 201 return -EINVAL; 202 203 for (i = 1; i <= size; i++) { 204 /* trigger an irq MESS_WRITE_NEXT */ 205 err = vx_send_irq_dsp(chip, IRQ_MESS_WRITE_NEXT); 206 if (err < 0) 207 return err; 208 /* Wait for RX full (with timeout protection) */ 209 err = vx_wait_for_rx_full(chip); 210 if (err < 0) 211 return err; 212 rmh->Stat[i] = vx_inb(chip, RXH) << 16; 213 rmh->Stat[i] |= vx_inb(chip, RXM) << 8; 214 rmh->Stat[i] |= vx_inb(chip, RXL); 215 } 216 217 return vx_transfer_end(chip, IRQ_MESS_WRITE_END); 218} 219 220 221#define MASK_MORE_THAN_1_WORD_COMMAND 0x00008000 222#define MASK_1_WORD_COMMAND 0x00ff7fff 223 224/* 225 * vx_send_msg_nolock - send a DSP message and read back the status 226 * @rmh: the rmh record to send and receive 227 * 228 * returns 0 if successful, or a negative error code. 229 * the error code can be VX-specific, retrieved via vx_get_error(). 230 * 231 * this function doesn't call mutex lock at all. 232 */ 233int vx_send_msg_nolock(struct vx_core *chip, struct vx_rmh *rmh) 234{ 235 int i, err; 236 237 if (chip->chip_status & VX_STAT_IS_STALE) 238 return -EBUSY; 239 240 err = vx_reset_chk(chip); 241 if (err < 0) { 242 snd_printd(KERN_DEBUG "vx_send_msg: vx_reset_chk error\n"); 243 return err; 244 } 245 246#if 0 247 printk(KERN_DEBUG "rmh: cmd = 0x%06x, length = %d, stype = %d\n", 248 rmh->Cmd[0], rmh->LgCmd, rmh->DspStat); 249 if (rmh->LgCmd > 1) { 250 printk(KERN_DEBUG " "); 251 for (i = 1; i < rmh->LgCmd; i++) 252 printk(KERN_CONT "0x%06x ", rmh->Cmd[i]); 253 printk(KERN_CONT "\n"); 254 } 255#endif 256 /* Check bit M is set according to length of the command */ 257 if (rmh->LgCmd > 1) 258 rmh->Cmd[0] |= MASK_MORE_THAN_1_WORD_COMMAND; 259 else 260 rmh->Cmd[0] &= MASK_1_WORD_COMMAND; 261 262 /* Wait for TX empty */ 263 err = vx_wait_isr_bit(chip, ISR_TX_EMPTY); 264 if (err < 0) { 265 snd_printd(KERN_DEBUG "vx_send_msg: wait tx empty error\n"); 266 return err; 267 } 268 269 /* Write Cmd[0] */ 270 vx_outb(chip, TXH, (rmh->Cmd[0] >> 16) & 0xff); 271 vx_outb(chip, TXM, (rmh->Cmd[0] >> 8) & 0xff); 272 vx_outb(chip, TXL, rmh->Cmd[0] & 0xff); 273 274 /* Trigger irq MESSAGE */ 275 err = vx_send_irq_dsp(chip, IRQ_MESSAGE); 276 if (err < 0) { 277 snd_printd(KERN_DEBUG "vx_send_msg: send IRQ_MESSAGE error\n"); 278 return err; 279 } 280 281 /* Wait for CHK = 1 */ 282 err = vx_wait_isr_bit(chip, ISR_CHK); 283 if (err < 0) 284 return err; 285 286 /* If error, get error value from RX */ 287 if (vx_inb(chip, ISR) & ISR_ERR) { 288 err = vx_wait_for_rx_full(chip); 289 if (err < 0) { 290 snd_printd(KERN_DEBUG "vx_send_msg: rx_full read error\n"); 291 return err; 292 } 293 err = vx_inb(chip, RXH) << 16; 294 err |= vx_inb(chip, RXM) << 8; 295 err |= vx_inb(chip, RXL); 296 snd_printd(KERN_DEBUG "msg got error = 0x%x at cmd[0]\n", err); 297 err = -(VX_ERR_MASK | err); 298 return err; 299 } 300 301 /* Send the other words */ 302 if (rmh->LgCmd > 1) { 303 for (i = 1; i < rmh->LgCmd; i++) { 304 /* Wait for TX ready */ 305 err = vx_wait_isr_bit(chip, ISR_TX_READY); 306 if (err < 0) { 307 snd_printd(KERN_DEBUG "vx_send_msg: tx_ready error\n"); 308 return err; 309 } 310 311 /* Write Cmd[i] */ 312 vx_outb(chip, TXH, (rmh->Cmd[i] >> 16) & 0xff); 313 vx_outb(chip, TXM, (rmh->Cmd[i] >> 8) & 0xff); 314 vx_outb(chip, TXL, rmh->Cmd[i] & 0xff); 315 316 /* Trigger irq MESS_READ_NEXT */ 317 err = vx_send_irq_dsp(chip, IRQ_MESS_READ_NEXT); 318 if (err < 0) { 319 snd_printd(KERN_DEBUG "vx_send_msg: IRQ_READ_NEXT error\n"); 320 return err; 321 } 322 } 323 /* Wait for TX empty */ 324 err = vx_wait_isr_bit(chip, ISR_TX_READY); 325 if (err < 0) { 326 snd_printd(KERN_DEBUG "vx_send_msg: TX_READY error\n"); 327 return err; 328 } 329 /* End of transfer */ 330 err = vx_transfer_end(chip, IRQ_MESS_READ_END); 331 if (err < 0) 332 return err; 333 } 334 335 return vx_read_status(chip, rmh); 336} 337 338 339/* 340 * vx_send_msg - send a DSP message with mutex 341 * @rmh: the rmh record to send and receive 342 * 343 * returns 0 if successful, or a negative error code. 344 * see vx_send_msg_nolock(). 345 */ 346int vx_send_msg(struct vx_core *chip, struct vx_rmh *rmh) 347{ 348 int err; 349 350 mutex_lock(&chip->lock); 351 err = vx_send_msg_nolock(chip, rmh); 352 mutex_unlock(&chip->lock); 353 return err; 354} 355 356 357/* 358 * vx_send_rih_nolock - send an RIH to xilinx 359 * @cmd: the command to send 360 * 361 * returns 0 if successful, or a negative error code. 362 * the error code can be VX-specific, retrieved via vx_get_error(). 363 * 364 * this function doesn't call mutex at all. 365 * 366 * unlike RMH, no command is sent to DSP. 367 */ 368int vx_send_rih_nolock(struct vx_core *chip, int cmd) 369{ 370 int err; 371 372 if (chip->chip_status & VX_STAT_IS_STALE) 373 return -EBUSY; 374 375#if 0 376 printk(KERN_DEBUG "send_rih: cmd = 0x%x\n", cmd); 377#endif 378 err = vx_reset_chk(chip); 379 if (err < 0) 380 return err; 381 /* send the IRQ */ 382 err = vx_send_irq_dsp(chip, cmd); 383 if (err < 0) 384 return err; 385 /* Wait CHK = 1 */ 386 err = vx_wait_isr_bit(chip, ISR_CHK); 387 if (err < 0) 388 return err; 389 /* If error, read RX */ 390 if (vx_inb(chip, ISR) & ISR_ERR) { 391 err = vx_wait_for_rx_full(chip); 392 if (err < 0) 393 return err; 394 err = vx_inb(chip, RXH) << 16; 395 err |= vx_inb(chip, RXM) << 8; 396 err |= vx_inb(chip, RXL); 397 return -(VX_ERR_MASK | err); 398 } 399 return 0; 400} 401 402 403/* 404 * vx_send_rih - send an RIH with mutex 405 * @cmd: the command to send 406 * 407 * see vx_send_rih_nolock(). 408 */ 409int vx_send_rih(struct vx_core *chip, int cmd) 410{ 411 int err; 412 413 mutex_lock(&chip->lock); 414 err = vx_send_rih_nolock(chip, cmd); 415 mutex_unlock(&chip->lock); 416 return err; 417} 418 419#define END_OF_RESET_WAIT_TIME 500 /* us */ 420 421/** 422 * snd_vx_load_boot_image - boot up the xilinx interface 423 * @chip: VX core instance 424 * @boot: the boot record to load 425 */ 426int snd_vx_load_boot_image(struct vx_core *chip, const struct firmware *boot) 427{ 428 unsigned int i; 429 int no_fillup = vx_has_new_dsp(chip); 430 431 /* check the length of boot image */ 432 if (boot->size <= 0) 433 return -EINVAL; 434 if (boot->size % 3) 435 return -EINVAL; 436#if 0 437 { 438 /* more strict check */ 439 unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2]; 440 if (boot->size != (c + 2) * 3) 441 return -EINVAL; 442 } 443#endif 444 445 /* reset dsp */ 446 vx_reset_dsp(chip); 447 448 udelay(END_OF_RESET_WAIT_TIME); /* another wait? */ 449 450 /* download boot strap */ 451 for (i = 0; i < 0x600; i += 3) { 452 if (i >= boot->size) { 453 if (no_fillup) 454 break; 455 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { 456 snd_printk(KERN_ERR "dsp boot failed at %d\n", i); 457 return -EIO; 458 } 459 vx_outb(chip, TXH, 0); 460 vx_outb(chip, TXM, 0); 461 vx_outb(chip, TXL, 0); 462 } else { 463 const unsigned char *image = boot->data + i; 464 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { 465 snd_printk(KERN_ERR "dsp boot failed at %d\n", i); 466 return -EIO; 467 } 468 vx_outb(chip, TXH, image[0]); 469 vx_outb(chip, TXM, image[1]); 470 vx_outb(chip, TXL, image[2]); 471 } 472 } 473 return 0; 474} 475 476EXPORT_SYMBOL(snd_vx_load_boot_image); 477 478/* 479 * vx_test_irq_src - query the source of interrupts 480 * 481 * called from irq handler only 482 */ 483static int vx_test_irq_src(struct vx_core *chip, unsigned int *ret) 484{ 485 int err; 486 487 vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT); 488 mutex_lock(&chip->lock); 489 err = vx_send_msg_nolock(chip, &chip->irq_rmh); 490 if (err < 0) 491 *ret = 0; 492 else 493 *ret = chip->irq_rmh.Stat[0]; 494 mutex_unlock(&chip->lock); 495 return err; 496} 497 498 499/* 500 * snd_vx_threaded_irq_handler - threaded irq handler 501 */ 502irqreturn_t snd_vx_threaded_irq_handler(int irq, void *dev) 503{ 504 struct vx_core *chip = dev; 505 unsigned int events; 506 507 if (chip->chip_status & VX_STAT_IS_STALE) 508 return IRQ_HANDLED; 509 510 if (vx_test_irq_src(chip, &events) < 0) 511 return IRQ_HANDLED; 512 513#if 0 514 if (events & 0x000800) 515 printk(KERN_ERR "DSP Stream underrun ! IRQ events = 0x%x\n", events); 516#endif 517 // printk(KERN_DEBUG "IRQ events = 0x%x\n", events); 518 519 /* We must prevent any application using this DSP 520 * and block any further request until the application 521 * either unregisters or reloads the DSP 522 */ 523 if (events & FATAL_DSP_ERROR) { 524 snd_printk(KERN_ERR "vx_core: fatal DSP error!!\n"); 525 return IRQ_HANDLED; 526 } 527 528 /* The start on time code conditions are filled (ie the time code 529 * received by the board is equal to one of those given to it). 530 */ 531 if (events & TIME_CODE_EVENT_PENDING) { 532 ; /* so far, nothing to do yet */ 533 } 534 535 /* The frequency has changed on the board (UER mode). */ 536 if (events & FREQUENCY_CHANGE_EVENT_PENDING) 537 vx_change_frequency(chip); 538 539 /* update the pcm streams */ 540 vx_pcm_update_intr(chip, events); 541 return IRQ_HANDLED; 542} 543EXPORT_SYMBOL(snd_vx_threaded_irq_handler); 544 545/** 546 * snd_vx_irq_handler - interrupt handler 547 * @irq: irq number 548 * @dev: VX core instance 549 */ 550irqreturn_t snd_vx_irq_handler(int irq, void *dev) 551{ 552 struct vx_core *chip = dev; 553 554 if (! (chip->chip_status & VX_STAT_CHIP_INIT) || 555 (chip->chip_status & VX_STAT_IS_STALE)) 556 return IRQ_NONE; 557 if (! vx_test_and_ack(chip)) 558 return IRQ_WAKE_THREAD; 559 return IRQ_NONE; 560} 561 562EXPORT_SYMBOL(snd_vx_irq_handler); 563 564/* 565 */ 566static void vx_reset_board(struct vx_core *chip, int cold_reset) 567{ 568 if (snd_BUG_ON(!chip->ops->reset_board)) 569 return; 570 571 /* current source, later sync'ed with target */ 572 chip->audio_source = VX_AUDIO_SRC_LINE; 573 if (cold_reset) { 574 chip->audio_source_target = chip->audio_source; 575 chip->clock_source = INTERNAL_QUARTZ; 576 chip->clock_mode = VX_CLOCK_MODE_AUTO; 577 chip->freq = 48000; 578 chip->uer_detected = VX_UER_MODE_NOT_PRESENT; 579 chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF; 580 } 581 582 chip->ops->reset_board(chip, cold_reset); 583 584 vx_reset_codec(chip, cold_reset); 585 586 vx_set_internal_clock(chip, chip->freq); 587 588 /* Reset the DSP */ 589 vx_reset_dsp(chip); 590 591 if (vx_is_pcmcia(chip)) { 592 /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */ 593 vx_test_and_ack(chip); 594 vx_validate_irq(chip, 1); 595 } 596 597 /* init CBits */ 598 vx_set_iec958_status(chip, chip->uer_bits); 599} 600 601 602/* 603 * proc interface 604 */ 605 606static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 607{ 608 struct vx_core *chip = entry->private_data; 609 static const char * const audio_src_vxp[] = { "Line", "Mic", "Digital" }; 610 static const char * const audio_src_vx2[] = { "Analog", "Analog", "Digital" }; 611 static const char * const clock_mode[] = { "Auto", "Internal", "External" }; 612 static const char * const clock_src[] = { "Internal", "External" }; 613 static const char * const uer_type[] = { "Consumer", "Professional", "Not Present" }; 614 615 snd_iprintf(buffer, "%s\n", chip->card->longname); 616 snd_iprintf(buffer, "Xilinx Firmware: %s\n", 617 (chip->chip_status & VX_STAT_XILINX_LOADED) ? "Loaded" : "No"); 618 snd_iprintf(buffer, "Device Initialized: %s\n", 619 (chip->chip_status & VX_STAT_DEVICE_INIT) ? "Yes" : "No"); 620 snd_iprintf(buffer, "DSP audio info:"); 621 if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME) 622 snd_iprintf(buffer, " realtime"); 623 if (chip->audio_info & VX_AUDIO_INFO_OFFLINE) 624 snd_iprintf(buffer, " offline"); 625 if (chip->audio_info & VX_AUDIO_INFO_MPEG1) 626 snd_iprintf(buffer, " mpeg1"); 627 if (chip->audio_info & VX_AUDIO_INFO_MPEG2) 628 snd_iprintf(buffer, " mpeg2"); 629 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8) 630 snd_iprintf(buffer, " linear8"); 631 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16) 632 snd_iprintf(buffer, " linear16"); 633 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24) 634 snd_iprintf(buffer, " linear24"); 635 snd_iprintf(buffer, "\n"); 636 snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ? 637 audio_src_vxp[chip->audio_source] : 638 audio_src_vx2[chip->audio_source]); 639 snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]); 640 snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]); 641 snd_iprintf(buffer, "Frequency: %d\n", chip->freq); 642 snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected); 643 snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]); 644 snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n", 645 chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size, 646 chip->ibl.granularity); 647} 648 649static void vx_proc_init(struct vx_core *chip) 650{ 651 snd_card_ro_proc_new(chip->card, "vx-status", chip, vx_proc_read); 652} 653 654 655/** 656 * snd_vx_dsp_boot - load the DSP boot 657 * @chip: VX core instance 658 * @boot: firmware data 659 */ 660int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot) 661{ 662 int err; 663 int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT); 664 665 vx_reset_board(chip, cold_reset); 666 vx_validate_irq(chip, 0); 667 668 err = snd_vx_load_boot_image(chip, boot); 669 if (err < 0) 670 return err; 671 msleep(10); 672 673 return 0; 674} 675 676EXPORT_SYMBOL(snd_vx_dsp_boot); 677 678/** 679 * snd_vx_dsp_load - load the DSP image 680 * @chip: VX core instance 681 * @dsp: firmware data 682 */ 683int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp) 684{ 685 unsigned int i; 686 int err; 687 unsigned int csum = 0; 688 const unsigned char *image, *cptr; 689 690 if (dsp->size % 3) 691 return -EINVAL; 692 693 vx_toggle_dac_mute(chip, 1); 694 695 /* Transfert data buffer from PC to DSP */ 696 for (i = 0; i < dsp->size; i += 3) { 697 image = dsp->data + i; 698 /* Wait DSP ready for a new read */ 699 err = vx_wait_isr_bit(chip, ISR_TX_EMPTY); 700 if (err < 0) { 701 printk(KERN_ERR 702 "dsp loading error at position %d\n", i); 703 return err; 704 } 705 cptr = image; 706 csum ^= *cptr; 707 csum = (csum >> 24) | (csum << 8); 708 vx_outb(chip, TXH, *cptr++); 709 csum ^= *cptr; 710 csum = (csum >> 24) | (csum << 8); 711 vx_outb(chip, TXM, *cptr++); 712 csum ^= *cptr; 713 csum = (csum >> 24) | (csum << 8); 714 vx_outb(chip, TXL, *cptr++); 715 } 716 snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum); 717 718 msleep(200); 719 720 err = vx_wait_isr_bit(chip, ISR_CHK); 721 if (err < 0) 722 return err; 723 724 vx_toggle_dac_mute(chip, 0); 725 726 vx_test_and_ack(chip); 727 vx_validate_irq(chip, 1); 728 729 return 0; 730} 731 732EXPORT_SYMBOL(snd_vx_dsp_load); 733 734#ifdef CONFIG_PM 735/* 736 * suspend 737 */ 738int snd_vx_suspend(struct vx_core *chip) 739{ 740 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); 741 chip->chip_status |= VX_STAT_IN_SUSPEND; 742 743 return 0; 744} 745 746EXPORT_SYMBOL(snd_vx_suspend); 747 748/* 749 * resume 750 */ 751int snd_vx_resume(struct vx_core *chip) 752{ 753 int i, err; 754 755 chip->chip_status &= ~VX_STAT_CHIP_INIT; 756 757 for (i = 0; i < 4; i++) { 758 if (! chip->firmware[i]) 759 continue; 760 err = chip->ops->load_dsp(chip, i, chip->firmware[i]); 761 if (err < 0) { 762 snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i); 763 return -EIO; 764 } 765 } 766 767 chip->chip_status |= VX_STAT_CHIP_INIT; 768 chip->chip_status &= ~VX_STAT_IN_SUSPEND; 769 770 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); 771 return 0; 772} 773 774EXPORT_SYMBOL(snd_vx_resume); 775#endif 776 777static void snd_vx_release(struct device *dev, void *data) 778{ 779 snd_vx_free_firmware(data); 780} 781 782/** 783 * snd_vx_create - constructor for struct vx_core 784 * @card: card instance 785 * @hw: hardware specific record 786 * @ops: VX ops pointer 787 * @extra_size: extra byte size to allocate appending to chip 788 * 789 * this function allocates the instance and prepare for the hardware 790 * initialization. 791 * 792 * The object is managed via devres, and will be automatically released. 793 * 794 * return the instance pointer if successful, NULL in error. 795 */ 796struct vx_core *snd_vx_create(struct snd_card *card, 797 const struct snd_vx_hardware *hw, 798 const struct snd_vx_ops *ops, 799 int extra_size) 800{ 801 struct vx_core *chip; 802 803 if (snd_BUG_ON(!card || !hw || !ops)) 804 return NULL; 805 806 chip = devres_alloc(snd_vx_release, sizeof(*chip) + extra_size, 807 GFP_KERNEL); 808 if (!chip) 809 return NULL; 810 mutex_init(&chip->lock); 811 chip->irq = -1; 812 chip->hw = hw; 813 chip->type = hw->type; 814 chip->ops = ops; 815 mutex_init(&chip->mixer_mutex); 816 817 chip->card = card; 818 card->private_data = chip; 819 strcpy(card->driver, hw->name); 820 sprintf(card->shortname, "Digigram %s", hw->name); 821 822 vx_proc_init(chip); 823 824 return chip; 825} 826 827EXPORT_SYMBOL(snd_vx_create); 828