1 /* 2 * Driver for Digigram VX soundcards 3 * 4 * Hardware core part 5 * 6 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 */ 22 23 #include <linux/delay.h> 24 #include <linux/slab.h> 25 #include <linux/interrupt.h> 26 #include <linux/init.h> 27 #include <linux/device.h> 28 #include <linux/firmware.h> 29 #include <sound/core.h> 30 #include <sound/pcm.h> 31 #include <sound/asoundef.h> 32 #include <sound/info.h> 33 #include <asm/io.h> 34 #include <sound/vx_core.h> 35 #include "vx_cmd.h" 36 37 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); 38 MODULE_DESCRIPTION("Common routines for Digigram VX drivers"); 39 MODULE_LICENSE("GPL"); 40 41 42 /* 43 * vx_check_reg_bit - wait for the specified bit is set/reset on a register 44 * @reg: register to check 45 * @mask: bit mask 46 * @bit: resultant bit to be checked 47 * @time: time-out of loop in msec 48 * 49 * returns zero if a bit matches, or a negative error code. 50 */ 51 int snd_vx_check_reg_bit(struct vx_core *chip, int reg, int mask, int bit, int time) 52 { 53 unsigned long end_time = jiffies + (time * HZ + 999) / 1000; 54 #ifdef CONFIG_SND_DEBUG 55 static char *reg_names[VX_REG_MAX] = { 56 "ICR", "CVR", "ISR", "IVR", "RXH", "RXM", "RXL", 57 "DMA", "CDSP", "RFREQ", "RUER/V2", "DATA", "MEMIRQ", 58 "ACQ", "BIT0", "BIT1", "MIC0", "MIC1", "MIC2", 59 "MIC3", "INTCSR", "CNTRL", "GPIOC", 60 "LOFREQ", "HIFREQ", "CSUER", "RUER" 61 }; 62 #endif 63 do { 64 if ((snd_vx_inb(chip, reg) & mask) == bit) 65 return 0; 66 //msleep(10); 67 } while (time_after_eq(end_time, jiffies)); 68 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)); 69 return -EIO; 70 } 71 72 EXPORT_SYMBOL(snd_vx_check_reg_bit); 73 74 /* 75 * vx_send_irq_dsp - set command irq bit 76 * @num: the requested IRQ type, IRQ_XXX 77 * 78 * this triggers the specified IRQ request 79 * returns 0 if successful, or a negative error code. 80 * 81 */ 82 static int vx_send_irq_dsp(struct vx_core *chip, int num) 83 { 84 int nirq; 85 86 /* wait for Hc = 0 */ 87 if (snd_vx_check_reg_bit(chip, VX_CVR, CVR_HC, 0, 200) < 0) 88 return -EIO; 89 90 nirq = num; 91 if (vx_has_new_dsp(chip)) 92 nirq += VXP_IRQ_OFFSET; 93 vx_outb(chip, CVR, (nirq >> 1) | CVR_HC); 94 return 0; 95 } 96 97 98 /* 99 * vx_reset_chk - reset CHK bit on ISR 100 * 101 * returns 0 if successful, or a negative error code. 102 */ 103 static int vx_reset_chk(struct vx_core *chip) 104 { 105 /* Reset irq CHK */ 106 if (vx_send_irq_dsp(chip, IRQ_RESET_CHK) < 0) 107 return -EIO; 108 /* Wait until CHK = 0 */ 109 if (vx_check_isr(chip, ISR_CHK, 0, 200) < 0) 110 return -EIO; 111 return 0; 112 } 113 114 /* 115 * vx_transfer_end - terminate message transfer 116 * @cmd: IRQ message to send (IRQ_MESS_XXX_END) 117 * 118 * returns 0 if successful, or a negative error code. 119 * the error code can be VX-specific, retrieved via vx_get_error(). 120 * NB: call with spinlock held! 121 */ 122 static int vx_transfer_end(struct vx_core *chip, int cmd) 123 { 124 int err; 125 126 if ((err = vx_reset_chk(chip)) < 0) 127 return err; 128 129 /* irq MESS_READ/WRITE_END */ 130 if ((err = vx_send_irq_dsp(chip, cmd)) < 0) 131 return err; 132 133 /* Wait CHK = 1 */ 134 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) 135 return err; 136 137 /* If error, Read RX */ 138 if ((err = vx_inb(chip, ISR)) & ISR_ERR) { 139 if ((err = vx_wait_for_rx_full(chip)) < 0) { 140 snd_printd(KERN_DEBUG "transfer_end: error in rx_full\n"); 141 return err; 142 } 143 err = vx_inb(chip, RXH) << 16; 144 err |= vx_inb(chip, RXM) << 8; 145 err |= vx_inb(chip, RXL); 146 snd_printd(KERN_DEBUG "transfer_end: error = 0x%x\n", err); 147 return -(VX_ERR_MASK | err); 148 } 149 return 0; 150 } 151 152 /* 153 * vx_read_status - return the status rmh 154 * @rmh: rmh record to store the status 155 * 156 * returns 0 if successful, or a negative error code. 157 * the error code can be VX-specific, retrieved via vx_get_error(). 158 * NB: call with spinlock held! 159 */ 160 static int vx_read_status(struct vx_core *chip, struct vx_rmh *rmh) 161 { 162 int i, err, val, size; 163 164 /* no read necessary? */ 165 if (rmh->DspStat == RMH_SSIZE_FIXED && rmh->LgStat == 0) 166 return 0; 167 168 /* Wait for RX full (with timeout protection) 169 * The first word of status is in RX 170 */ 171 err = vx_wait_for_rx_full(chip); 172 if (err < 0) 173 return err; 174 175 /* Read RX */ 176 val = vx_inb(chip, RXH) << 16; 177 val |= vx_inb(chip, RXM) << 8; 178 val |= vx_inb(chip, RXL); 179 180 /* If status given by DSP, let's decode its size */ 181 switch (rmh->DspStat) { 182 case RMH_SSIZE_ARG: 183 size = val & 0xff; 184 rmh->Stat[0] = val & 0xffff00; 185 rmh->LgStat = size + 1; 186 break; 187 case RMH_SSIZE_MASK: 188 /* Let's count the arg numbers from a mask */ 189 rmh->Stat[0] = val; 190 size = 0; 191 while (val) { 192 if (val & 0x01) 193 size++; 194 val >>= 1; 195 } 196 rmh->LgStat = size + 1; 197 break; 198 default: 199 /* else retrieve the status length given by the driver */ 200 size = rmh->LgStat; 201 rmh->Stat[0] = val; /* Val is the status 1st word */ 202 size--; /* hence adjust remaining length */ 203 break; 204 } 205 206 if (size < 1) 207 return 0; 208 snd_assert(size <= SIZE_MAX_STATUS, return -EINVAL); 209 210 for (i = 1; i <= size; i++) { 211 /* trigger an irq MESS_WRITE_NEXT */ 212 err = vx_send_irq_dsp(chip, IRQ_MESS_WRITE_NEXT); 213 if (err < 0) 214 return err; 215 /* Wait for RX full (with timeout protection) */ 216 err = vx_wait_for_rx_full(chip); 217 if (err < 0) 218 return err; 219 rmh->Stat[i] = vx_inb(chip, RXH) << 16; 220 rmh->Stat[i] |= vx_inb(chip, RXM) << 8; 221 rmh->Stat[i] |= vx_inb(chip, RXL); 222 } 223 224 return vx_transfer_end(chip, IRQ_MESS_WRITE_END); 225 } 226 227 228 #define MASK_MORE_THAN_1_WORD_COMMAND 0x00008000 229 #define MASK_1_WORD_COMMAND 0x00ff7fff 230 231 /* 232 * vx_send_msg_nolock - send a DSP message and read back the status 233 * @rmh: the rmh record to send and receive 234 * 235 * returns 0 if successful, or a negative error code. 236 * the error code can be VX-specific, retrieved via vx_get_error(). 237 * 238 * this function doesn't call spinlock at all. 239 */ 240 int vx_send_msg_nolock(struct vx_core *chip, struct vx_rmh *rmh) 241 { 242 int i, err; 243 244 if (chip->chip_status & VX_STAT_IS_STALE) 245 return -EBUSY; 246 247 if ((err = vx_reset_chk(chip)) < 0) { 248 snd_printd(KERN_DEBUG "vx_send_msg: vx_reset_chk error\n"); 249 return err; 250 } 251 252 #if 0 253 printk(KERN_DEBUG "rmh: cmd = 0x%06x, length = %d, stype = %d\n", 254 rmh->Cmd[0], rmh->LgCmd, rmh->DspStat); 255 if (rmh->LgCmd > 1) { 256 printk(KERN_DEBUG " "); 257 for (i = 1; i < rmh->LgCmd; i++) 258 printk("0x%06x ", rmh->Cmd[i]); 259 printk("\n"); 260 } 261 #endif 262 /* Check bit M is set according to length of the command */ 263 if (rmh->LgCmd > 1) 264 rmh->Cmd[0] |= MASK_MORE_THAN_1_WORD_COMMAND; 265 else 266 rmh->Cmd[0] &= MASK_1_WORD_COMMAND; 267 268 /* Wait for TX empty */ 269 if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) { 270 snd_printd(KERN_DEBUG "vx_send_msg: wait tx empty error\n"); 271 return err; 272 } 273 274 /* Write Cmd[0] */ 275 vx_outb(chip, TXH, (rmh->Cmd[0] >> 16) & 0xff); 276 vx_outb(chip, TXM, (rmh->Cmd[0] >> 8) & 0xff); 277 vx_outb(chip, TXL, rmh->Cmd[0] & 0xff); 278 279 /* Trigger irq MESSAGE */ 280 if ((err = vx_send_irq_dsp(chip, IRQ_MESSAGE)) < 0) { 281 snd_printd(KERN_DEBUG "vx_send_msg: send IRQ_MESSAGE error\n"); 282 return err; 283 } 284 285 /* Wait for CHK = 1 */ 286 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) 287 return err; 288 289 /* If error, get error value from RX */ 290 if (vx_inb(chip, ISR) & ISR_ERR) { 291 if ((err = vx_wait_for_rx_full(chip)) < 0) { 292 snd_printd(KERN_DEBUG "vx_send_msg: rx_full read error\n"); 293 return err; 294 } 295 err = vx_inb(chip, RXH) << 16; 296 err |= vx_inb(chip, RXM) << 8; 297 err |= vx_inb(chip, RXL); 298 snd_printd(KERN_DEBUG "msg got error = 0x%x at cmd[0]\n", err); 299 err = -(VX_ERR_MASK | err); 300 return err; 301 } 302 303 /* Send the other words */ 304 if (rmh->LgCmd > 1) { 305 for (i = 1; i < rmh->LgCmd; i++) { 306 /* Wait for TX ready */ 307 if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) { 308 snd_printd(KERN_DEBUG "vx_send_msg: tx_ready error\n"); 309 return err; 310 } 311 312 /* Write Cmd[i] */ 313 vx_outb(chip, TXH, (rmh->Cmd[i] >> 16) & 0xff); 314 vx_outb(chip, TXM, (rmh->Cmd[i] >> 8) & 0xff); 315 vx_outb(chip, TXL, rmh->Cmd[i] & 0xff); 316 317 /* Trigger irq MESS_READ_NEXT */ 318 if ((err = vx_send_irq_dsp(chip, IRQ_MESS_READ_NEXT)) < 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 if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) { 325 snd_printd(KERN_DEBUG "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 spinlock 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 unsigned long flags; 348 int err; 349 350 spin_lock_irqsave(&chip->lock, flags); 351 err = vx_send_msg_nolock(chip, rmh); 352 spin_unlock_irqrestore(&chip->lock, flags); 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 spinlock at all. 365 * 366 * unlike RMH, no command is sent to DSP. 367 */ 368 int 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 if ((err = vx_reset_chk(chip)) < 0) 379 return err; 380 /* send the IRQ */ 381 if ((err = vx_send_irq_dsp(chip, cmd)) < 0) 382 return err; 383 /* Wait CHK = 1 */ 384 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) 385 return err; 386 /* If error, read RX */ 387 if (vx_inb(chip, ISR) & ISR_ERR) { 388 if ((err = vx_wait_for_rx_full(chip)) < 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 spinlock 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 unsigned long flags; 408 int err; 409 410 spin_lock_irqsave(&chip->lock, flags); 411 err = vx_send_rih_nolock(chip, cmd); 412 spin_unlock_irqrestore(&chip->lock, flags); 413 return err; 414 } 415 416 #define END_OF_RESET_WAIT_TIME 500 /* us */ 417 418 /** 419 * snd_vx_boot_xilinx - boot up the xilinx interface 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 snd_assert(boot->size > 0, return -EINVAL); 429 snd_assert(boot->size % 3 == 0, return -EINVAL); 430 #if 0 431 { 432 /* more strict check */ 433 unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2]; 434 snd_assert(boot->size == (c + 2) * 3, return -EINVAL); 435 } 436 #endif 437 438 /* reset dsp */ 439 vx_reset_dsp(chip); 440 441 udelay(END_OF_RESET_WAIT_TIME); /* another wait? */ 442 443 /* download boot strap */ 444 for (i = 0; i < 0x600; i += 3) { 445 if (i >= boot->size) { 446 if (no_fillup) 447 break; 448 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { 449 snd_printk(KERN_ERR "dsp boot failed at %d\n", i); 450 return -EIO; 451 } 452 vx_outb(chip, TXH, 0); 453 vx_outb(chip, TXM, 0); 454 vx_outb(chip, TXL, 0); 455 } else { 456 const unsigned char *image = boot->data + i; 457 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { 458 snd_printk(KERN_ERR "dsp boot failed at %d\n", i); 459 return -EIO; 460 } 461 vx_outb(chip, TXH, image[0]); 462 vx_outb(chip, TXM, image[1]); 463 vx_outb(chip, TXL, image[2]); 464 } 465 } 466 return 0; 467 } 468 469 EXPORT_SYMBOL(snd_vx_load_boot_image); 470 471 /* 472 * vx_test_irq_src - query the source of interrupts 473 * 474 * called from irq handler only 475 */ 476 static int vx_test_irq_src(struct vx_core *chip, unsigned int *ret) 477 { 478 int err; 479 480 vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT); 481 spin_lock(&chip->lock); 482 err = vx_send_msg_nolock(chip, &chip->irq_rmh); 483 if (err < 0) 484 *ret = 0; 485 else 486 *ret = chip->irq_rmh.Stat[0]; 487 spin_unlock(&chip->lock); 488 return err; 489 } 490 491 492 /* 493 * vx_interrupt - soft irq handler 494 */ 495 static void vx_interrupt(unsigned long private_data) 496 { 497 struct vx_core *chip = (struct vx_core *) private_data; 498 unsigned int events; 499 500 if (chip->chip_status & VX_STAT_IS_STALE) 501 return; 502 503 if (vx_test_irq_src(chip, &events) < 0) 504 return; 505 506 #if 0 507 if (events & 0x000800) 508 printk(KERN_ERR "DSP Stream underrun ! IRQ events = 0x%x\n", events); 509 #endif 510 // printk(KERN_DEBUG "IRQ events = 0x%x\n", events); 511 512 /* We must prevent any application using this DSP 513 * and block any further request until the application 514 * either unregisters or reloads the DSP 515 */ 516 if (events & FATAL_DSP_ERROR) { 517 snd_printk(KERN_ERR "vx_core: fatal DSP error!!\n"); 518 return; 519 } 520 521 /* The start on time code conditions are filled (ie the time code 522 * received by the board is equal to one of those given to it). 523 */ 524 if (events & TIME_CODE_EVENT_PENDING) 525 ; /* so far, nothing to do yet */ 526 527 /* The frequency has changed on the board (UER mode). */ 528 if (events & FREQUENCY_CHANGE_EVENT_PENDING) 529 vx_change_frequency(chip); 530 531 /* update the pcm streams */ 532 vx_pcm_update_intr(chip, events); 533 } 534 535 536 /** 537 * snd_vx_irq_handler - interrupt handler 538 */ 539 irqreturn_t snd_vx_irq_handler(int irq, void *dev) 540 { 541 struct vx_core *chip = dev; 542 543 if (! (chip->chip_status & VX_STAT_CHIP_INIT) || 544 (chip->chip_status & VX_STAT_IS_STALE)) 545 return IRQ_NONE; 546 if (! vx_test_and_ack(chip)) 547 tasklet_hi_schedule(&chip->tq); 548 return IRQ_HANDLED; 549 } 550 551 EXPORT_SYMBOL(snd_vx_irq_handler); 552 553 /* 554 */ 555 static void vx_reset_board(struct vx_core *chip, int cold_reset) 556 { 557 snd_assert(chip->ops->reset_board, return); 558 559 /* current source, later sync'ed with target */ 560 chip->audio_source = VX_AUDIO_SRC_LINE; 561 if (cold_reset) { 562 chip->audio_source_target = chip->audio_source; 563 chip->clock_source = INTERNAL_QUARTZ; 564 chip->clock_mode = VX_CLOCK_MODE_AUTO; 565 chip->freq = 48000; 566 chip->uer_detected = VX_UER_MODE_NOT_PRESENT; 567 chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF; 568 } 569 570 chip->ops->reset_board(chip, cold_reset); 571 572 vx_reset_codec(chip, cold_reset); 573 574 vx_set_internal_clock(chip, chip->freq); 575 576 /* Reset the DSP */ 577 vx_reset_dsp(chip); 578 579 if (vx_is_pcmcia(chip)) { 580 /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */ 581 vx_test_and_ack(chip); 582 vx_validate_irq(chip, 1); 583 } 584 585 /* init CBits */ 586 vx_set_iec958_status(chip, chip->uer_bits); 587 } 588 589 590 /* 591 * proc interface 592 */ 593 594 static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 595 { 596 struct vx_core *chip = entry->private_data; 597 static char *audio_src_vxp[] = { "Line", "Mic", "Digital" }; 598 static char *audio_src_vx2[] = { "Analog", "Analog", "Digital" }; 599 static char *clock_mode[] = { "Auto", "Internal", "External" }; 600 static char *clock_src[] = { "Internal", "External" }; 601 static char *uer_type[] = { "Consumer", "Professional", "Not Present" }; 602 603 snd_iprintf(buffer, "%s\n", chip->card->longname); 604 snd_iprintf(buffer, "Xilinx Firmware: %s\n", 605 chip->chip_status & VX_STAT_XILINX_LOADED ? "Loaded" : "No"); 606 snd_iprintf(buffer, "Device Initialized: %s\n", 607 chip->chip_status & VX_STAT_DEVICE_INIT ? "Yes" : "No"); 608 snd_iprintf(buffer, "DSP audio info:"); 609 if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME) 610 snd_iprintf(buffer, " realtime"); 611 if (chip->audio_info & VX_AUDIO_INFO_OFFLINE) 612 snd_iprintf(buffer, " offline"); 613 if (chip->audio_info & VX_AUDIO_INFO_MPEG1) 614 snd_iprintf(buffer, " mpeg1"); 615 if (chip->audio_info & VX_AUDIO_INFO_MPEG2) 616 snd_iprintf(buffer, " mpeg2"); 617 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8) 618 snd_iprintf(buffer, " linear8"); 619 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16) 620 snd_iprintf(buffer, " linear16"); 621 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24) 622 snd_iprintf(buffer, " linear24"); 623 snd_iprintf(buffer, "\n"); 624 snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ? 625 audio_src_vxp[chip->audio_source] : 626 audio_src_vx2[chip->audio_source]); 627 snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]); 628 snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]); 629 snd_iprintf(buffer, "Frequency: %d\n", chip->freq); 630 snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected); 631 snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]); 632 snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n", 633 chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size, 634 chip->ibl.granularity); 635 } 636 637 static void vx_proc_init(struct vx_core *chip) 638 { 639 struct snd_info_entry *entry; 640 641 if (! snd_card_proc_new(chip->card, "vx-status", &entry)) 642 snd_info_set_text_ops(entry, chip, vx_proc_read); 643 } 644 645 646 /** 647 * snd_vx_dsp_boot - load the DSP boot 648 */ 649 int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot) 650 { 651 int err; 652 int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT); 653 654 vx_reset_board(chip, cold_reset); 655 vx_validate_irq(chip, 0); 656 657 if ((err = snd_vx_load_boot_image(chip, boot)) < 0) 658 return err; 659 msleep(10); 660 661 return 0; 662 } 663 664 EXPORT_SYMBOL(snd_vx_dsp_boot); 665 666 /** 667 * snd_vx_dsp_load - load the DSP image 668 */ 669 int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp) 670 { 671 unsigned int i; 672 int err; 673 unsigned int csum = 0; 674 const unsigned char *image, *cptr; 675 676 snd_assert(dsp->size % 3 == 0, return -EINVAL); 677 678 vx_toggle_dac_mute(chip, 1); 679 680 /* Transfert data buffer from PC to DSP */ 681 for (i = 0; i < dsp->size; i += 3) { 682 image = dsp->data + i; 683 /* Wait DSP ready for a new read */ 684 if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) { 685 printk("dsp loading error at position %d\n", i); 686 return err; 687 } 688 cptr = image; 689 csum ^= *cptr; 690 csum = (csum >> 24) | (csum << 8); 691 vx_outb(chip, TXH, *cptr++); 692 csum ^= *cptr; 693 csum = (csum >> 24) | (csum << 8); 694 vx_outb(chip, TXM, *cptr++); 695 csum ^= *cptr; 696 csum = (csum >> 24) | (csum << 8); 697 vx_outb(chip, TXL, *cptr++); 698 } 699 snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum); 700 701 msleep(200); 702 703 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) 704 return err; 705 706 vx_toggle_dac_mute(chip, 0); 707 708 vx_test_and_ack(chip); 709 vx_validate_irq(chip, 1); 710 711 return 0; 712 } 713 714 EXPORT_SYMBOL(snd_vx_dsp_load); 715 716 #ifdef CONFIG_PM 717 /* 718 * suspend 719 */ 720 int snd_vx_suspend(struct vx_core *chip, pm_message_t state) 721 { 722 unsigned int i; 723 724 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); 725 chip->chip_status |= VX_STAT_IN_SUSPEND; 726 for (i = 0; i < chip->hw->num_codecs; i++) 727 snd_pcm_suspend_all(chip->pcm[i]); 728 729 return 0; 730 } 731 732 EXPORT_SYMBOL(snd_vx_suspend); 733 734 /* 735 * resume 736 */ 737 int snd_vx_resume(struct vx_core *chip) 738 { 739 int i, err; 740 741 chip->chip_status &= ~VX_STAT_CHIP_INIT; 742 743 for (i = 0; i < 4; i++) { 744 if (! chip->firmware[i]) 745 continue; 746 err = chip->ops->load_dsp(chip, i, chip->firmware[i]); 747 if (err < 0) { 748 snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i); 749 return -EIO; 750 } 751 } 752 753 chip->chip_status |= VX_STAT_CHIP_INIT; 754 chip->chip_status &= ~VX_STAT_IN_SUSPEND; 755 756 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); 757 return 0; 758 } 759 760 EXPORT_SYMBOL(snd_vx_resume); 761 #endif 762 763 /** 764 * snd_vx_create - constructor for struct vx_core 765 * @hw: hardware specific record 766 * 767 * this function allocates the instance and prepare for the hardware 768 * initialization. 769 * 770 * return the instance pointer if successful, NULL in error. 771 */ 772 struct vx_core *snd_vx_create(struct snd_card *card, struct snd_vx_hardware *hw, 773 struct snd_vx_ops *ops, 774 int extra_size) 775 { 776 struct vx_core *chip; 777 778 snd_assert(card && hw && ops, return NULL); 779 780 chip = kzalloc(sizeof(*chip) + extra_size, GFP_KERNEL); 781 if (! chip) { 782 snd_printk(KERN_ERR "vx_core: no memory\n"); 783 return NULL; 784 } 785 spin_lock_init(&chip->lock); 786 spin_lock_init(&chip->irq_lock); 787 chip->irq = -1; 788 chip->hw = hw; 789 chip->type = hw->type; 790 chip->ops = ops; 791 tasklet_init(&chip->tq, vx_interrupt, (unsigned long)chip); 792 mutex_init(&chip->mixer_mutex); 793 794 chip->card = card; 795 card->private_data = chip; 796 strcpy(card->driver, hw->name); 797 sprintf(card->shortname, "Digigram %s", hw->name); 798 799 vx_proc_init(chip); 800 801 return chip; 802 } 803 804 EXPORT_SYMBOL(snd_vx_create); 805 806 /* 807 * module entries 808 */ 809 static int __init alsa_vx_core_init(void) 810 { 811 return 0; 812 } 813 814 static void __exit alsa_vx_core_exit(void) 815 { 816 } 817 818 module_init(alsa_vx_core_init) 819 module_exit(alsa_vx_core_exit) 820