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 <sound/driver.h> 24 #include <linux/delay.h> 25 #include <linux/slab.h> 26 #include <linux/interrupt.h> 27 #include <linux/init.h> 28 #include <linux/device.h> 29 #include <linux/firmware.h> 30 #include <sound/core.h> 31 #include <sound/pcm.h> 32 #include <sound/asoundef.h> 33 #include <sound/info.h> 34 #include <asm/io.h> 35 #include <sound/vx_core.h> 36 #include "vx_cmd.h" 37 38 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); 39 MODULE_DESCRIPTION("Common routines for Digigram VX drivers"); 40 MODULE_LICENSE("GPL"); 41 42 43 /* 44 * snd_vx_delay - delay for the specified time 45 * @xmsec: the time to delay in msec 46 */ 47 void snd_vx_delay(vx_core_t *chip, int xmsec) 48 { 49 if (! in_interrupt() && xmsec >= 1000 / HZ) 50 msleep(xmsec); 51 else 52 mdelay(xmsec); 53 } 54 55 /* 56 * vx_check_reg_bit - wait for the specified bit is set/reset on a register 57 * @reg: register to check 58 * @mask: bit mask 59 * @bit: resultant bit to be checked 60 * @time: time-out of loop in msec 61 * 62 * returns zero if a bit matches, or a negative error code. 63 */ 64 int snd_vx_check_reg_bit(vx_core_t *chip, int reg, int mask, int bit, int time) 65 { 66 unsigned long end_time = jiffies + (time * HZ + 999) / 1000; 67 #ifdef CONFIG_SND_DEBUG 68 static char *reg_names[VX_REG_MAX] = { 69 "ICR", "CVR", "ISR", "IVR", "RXH", "RXM", "RXL", 70 "DMA", "CDSP", "RFREQ", "RUER/V2", "DATA", "MEMIRQ", 71 "ACQ", "BIT0", "BIT1", "MIC0", "MIC1", "MIC2", 72 "MIC3", "INTCSR", "CNTRL", "GPIOC", 73 "LOFREQ", "HIFREQ", "CSUER", "RUER" 74 }; 75 #endif 76 do { 77 if ((snd_vx_inb(chip, reg) & mask) == bit) 78 return 0; 79 //snd_vx_delay(chip, 10); 80 } while (time_after_eq(end_time, jiffies)); 81 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)); 82 return -EIO; 83 } 84 85 /* 86 * vx_send_irq_dsp - set command irq bit 87 * @num: the requested IRQ type, IRQ_XXX 88 * 89 * this triggers the specified IRQ request 90 * returns 0 if successful, or a negative error code. 91 * 92 */ 93 static int vx_send_irq_dsp(vx_core_t *chip, int num) 94 { 95 int nirq; 96 97 /* wait for Hc = 0 */ 98 if (snd_vx_check_reg_bit(chip, VX_CVR, CVR_HC, 0, 200) < 0) 99 return -EIO; 100 101 nirq = num; 102 if (vx_has_new_dsp(chip)) 103 nirq += VXP_IRQ_OFFSET; 104 vx_outb(chip, CVR, (nirq >> 1) | CVR_HC); 105 return 0; 106 } 107 108 109 /* 110 * vx_reset_chk - reset CHK bit on ISR 111 * 112 * returns 0 if successful, or a negative error code. 113 */ 114 static int vx_reset_chk(vx_core_t *chip) 115 { 116 /* Reset irq CHK */ 117 if (vx_send_irq_dsp(chip, IRQ_RESET_CHK) < 0) 118 return -EIO; 119 /* Wait until CHK = 0 */ 120 if (vx_check_isr(chip, ISR_CHK, 0, 200) < 0) 121 return -EIO; 122 return 0; 123 } 124 125 /* 126 * vx_transfer_end - terminate message transfer 127 * @cmd: IRQ message to send (IRQ_MESS_XXX_END) 128 * 129 * returns 0 if successful, or a negative error code. 130 * the error code can be VX-specific, retrieved via vx_get_error(). 131 * NB: call with spinlock held! 132 */ 133 static int vx_transfer_end(vx_core_t *chip, int cmd) 134 { 135 int err; 136 137 if ((err = vx_reset_chk(chip)) < 0) 138 return err; 139 140 /* irq MESS_READ/WRITE_END */ 141 if ((err = vx_send_irq_dsp(chip, cmd)) < 0) 142 return err; 143 144 /* Wait CHK = 1 */ 145 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) 146 return err; 147 148 /* If error, Read RX */ 149 if ((err = vx_inb(chip, ISR)) & ISR_ERR) { 150 if ((err = vx_wait_for_rx_full(chip)) < 0) { 151 snd_printd(KERN_DEBUG "transfer_end: error in rx_full\n"); 152 return err; 153 } 154 err = vx_inb(chip, RXH) << 16; 155 err |= vx_inb(chip, RXM) << 8; 156 err |= vx_inb(chip, RXL); 157 snd_printd(KERN_DEBUG "transfer_end: error = 0x%x\n", err); 158 return -(VX_ERR_MASK | err); 159 } 160 return 0; 161 } 162 163 /* 164 * vx_read_status - return the status rmh 165 * @rmh: rmh record to store the status 166 * 167 * returns 0 if successful, or a negative error code. 168 * the error code can be VX-specific, retrieved via vx_get_error(). 169 * NB: call with spinlock held! 170 */ 171 static int vx_read_status(vx_core_t *chip, struct vx_rmh *rmh) 172 { 173 int i, err, val, size; 174 175 /* no read necessary? */ 176 if (rmh->DspStat == RMH_SSIZE_FIXED && rmh->LgStat == 0) 177 return 0; 178 179 /* Wait for RX full (with timeout protection) 180 * The first word of status is in RX 181 */ 182 err = vx_wait_for_rx_full(chip); 183 if (err < 0) 184 return err; 185 186 /* Read RX */ 187 val = vx_inb(chip, RXH) << 16; 188 val |= vx_inb(chip, RXM) << 8; 189 val |= vx_inb(chip, RXL); 190 191 /* If status given by DSP, let's decode its size */ 192 switch (rmh->DspStat) { 193 case RMH_SSIZE_ARG: 194 size = val & 0xff; 195 rmh->Stat[0] = val & 0xffff00; 196 rmh->LgStat = size + 1; 197 break; 198 case RMH_SSIZE_MASK: 199 /* Let's count the arg numbers from a mask */ 200 rmh->Stat[0] = val; 201 size = 0; 202 while (val) { 203 if (val & 0x01) 204 size++; 205 val >>= 1; 206 } 207 rmh->LgStat = size + 1; 208 break; 209 default: 210 /* else retrieve the status length given by the driver */ 211 size = rmh->LgStat; 212 rmh->Stat[0] = val; /* Val is the status 1st word */ 213 size--; /* hence adjust remaining length */ 214 break; 215 } 216 217 if (size < 1) 218 return 0; 219 snd_assert(size <= SIZE_MAX_STATUS, return -EINVAL); 220 221 for (i = 1; i <= size; i++) { 222 /* trigger an irq MESS_WRITE_NEXT */ 223 err = vx_send_irq_dsp(chip, IRQ_MESS_WRITE_NEXT); 224 if (err < 0) 225 return err; 226 /* Wait for RX full (with timeout protection) */ 227 err = vx_wait_for_rx_full(chip); 228 if (err < 0) 229 return err; 230 rmh->Stat[i] = vx_inb(chip, RXH) << 16; 231 rmh->Stat[i] |= vx_inb(chip, RXM) << 8; 232 rmh->Stat[i] |= vx_inb(chip, RXL); 233 } 234 235 return vx_transfer_end(chip, IRQ_MESS_WRITE_END); 236 } 237 238 239 #define MASK_MORE_THAN_1_WORD_COMMAND 0x00008000 240 #define MASK_1_WORD_COMMAND 0x00ff7fff 241 242 /* 243 * vx_send_msg_nolock - send a DSP message and read back the status 244 * @rmh: the rmh record to send and receive 245 * 246 * returns 0 if successful, or a negative error code. 247 * the error code can be VX-specific, retrieved via vx_get_error(). 248 * 249 * this function doesn't call spinlock at all. 250 */ 251 int vx_send_msg_nolock(vx_core_t *chip, struct vx_rmh *rmh) 252 { 253 int i, err; 254 255 if (chip->chip_status & VX_STAT_IS_STALE) 256 return -EBUSY; 257 258 if ((err = vx_reset_chk(chip)) < 0) { 259 snd_printd(KERN_DEBUG "vx_send_msg: vx_reset_chk error\n"); 260 return err; 261 } 262 263 #if 0 264 printk(KERN_DEBUG "rmh: cmd = 0x%06x, length = %d, stype = %d\n", 265 rmh->Cmd[0], rmh->LgCmd, rmh->DspStat); 266 if (rmh->LgCmd > 1) { 267 printk(KERN_DEBUG " "); 268 for (i = 1; i < rmh->LgCmd; i++) 269 printk("0x%06x ", rmh->Cmd[i]); 270 printk("\n"); 271 } 272 #endif 273 /* Check bit M is set according to length of the command */ 274 if (rmh->LgCmd > 1) 275 rmh->Cmd[0] |= MASK_MORE_THAN_1_WORD_COMMAND; 276 else 277 rmh->Cmd[0] &= MASK_1_WORD_COMMAND; 278 279 /* Wait for TX empty */ 280 if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) { 281 snd_printd(KERN_DEBUG "vx_send_msg: wait tx empty error\n"); 282 return err; 283 } 284 285 /* Write Cmd[0] */ 286 vx_outb(chip, TXH, (rmh->Cmd[0] >> 16) & 0xff); 287 vx_outb(chip, TXM, (rmh->Cmd[0] >> 8) & 0xff); 288 vx_outb(chip, TXL, rmh->Cmd[0] & 0xff); 289 290 /* Trigger irq MESSAGE */ 291 if ((err = vx_send_irq_dsp(chip, IRQ_MESSAGE)) < 0) { 292 snd_printd(KERN_DEBUG "vx_send_msg: send IRQ_MESSAGE error\n"); 293 return err; 294 } 295 296 /* Wait for CHK = 1 */ 297 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) 298 return err; 299 300 /* If error, get error value from RX */ 301 if (vx_inb(chip, ISR) & ISR_ERR) { 302 if ((err = vx_wait_for_rx_full(chip)) < 0) { 303 snd_printd(KERN_DEBUG "vx_send_msg: rx_full read error\n"); 304 return err; 305 } 306 err = vx_inb(chip, RXH) << 16; 307 err |= vx_inb(chip, RXM) << 8; 308 err |= vx_inb(chip, RXL); 309 snd_printd(KERN_DEBUG "msg got error = 0x%x at cmd[0]\n", err); 310 err = -(VX_ERR_MASK | err); 311 return err; 312 } 313 314 /* Send the other words */ 315 if (rmh->LgCmd > 1) { 316 for (i = 1; i < rmh->LgCmd; i++) { 317 /* Wait for TX ready */ 318 if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) { 319 snd_printd(KERN_DEBUG "vx_send_msg: tx_ready error\n"); 320 return err; 321 } 322 323 /* Write Cmd[i] */ 324 vx_outb(chip, TXH, (rmh->Cmd[i] >> 16) & 0xff); 325 vx_outb(chip, TXM, (rmh->Cmd[i] >> 8) & 0xff); 326 vx_outb(chip, TXL, rmh->Cmd[i] & 0xff); 327 328 /* Trigger irq MESS_READ_NEXT */ 329 if ((err = vx_send_irq_dsp(chip, IRQ_MESS_READ_NEXT)) < 0) { 330 snd_printd(KERN_DEBUG "vx_send_msg: IRQ_READ_NEXT error\n"); 331 return err; 332 } 333 } 334 /* Wait for TX empty */ 335 if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) { 336 snd_printd(KERN_DEBUG "vx_send_msg: TX_READY error\n"); 337 return err; 338 } 339 /* End of transfer */ 340 err = vx_transfer_end(chip, IRQ_MESS_READ_END); 341 if (err < 0) 342 return err; 343 } 344 345 return vx_read_status(chip, rmh); 346 } 347 348 349 /* 350 * vx_send_msg - send a DSP message with spinlock 351 * @rmh: the rmh record to send and receive 352 * 353 * returns 0 if successful, or a negative error code. 354 * see vx_send_msg_nolock(). 355 */ 356 int vx_send_msg(vx_core_t *chip, struct vx_rmh *rmh) 357 { 358 unsigned long flags; 359 int err; 360 361 spin_lock_irqsave(&chip->lock, flags); 362 err = vx_send_msg_nolock(chip, rmh); 363 spin_unlock_irqrestore(&chip->lock, flags); 364 return err; 365 } 366 367 368 /* 369 * vx_send_rih_nolock - send an RIH to xilinx 370 * @cmd: the command to send 371 * 372 * returns 0 if successful, or a negative error code. 373 * the error code can be VX-specific, retrieved via vx_get_error(). 374 * 375 * this function doesn't call spinlock at all. 376 * 377 * unlike RMH, no command is sent to DSP. 378 */ 379 int vx_send_rih_nolock(vx_core_t *chip, int cmd) 380 { 381 int err; 382 383 if (chip->chip_status & VX_STAT_IS_STALE) 384 return -EBUSY; 385 386 #if 0 387 printk(KERN_DEBUG "send_rih: cmd = 0x%x\n", cmd); 388 #endif 389 if ((err = vx_reset_chk(chip)) < 0) 390 return err; 391 /* send the IRQ */ 392 if ((err = vx_send_irq_dsp(chip, cmd)) < 0) 393 return err; 394 /* Wait CHK = 1 */ 395 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) 396 return err; 397 /* If error, read RX */ 398 if (vx_inb(chip, ISR) & ISR_ERR) { 399 if ((err = vx_wait_for_rx_full(chip)) < 0) 400 return err; 401 err = vx_inb(chip, RXH) << 16; 402 err |= vx_inb(chip, RXM) << 8; 403 err |= vx_inb(chip, RXL); 404 return -(VX_ERR_MASK | err); 405 } 406 return 0; 407 } 408 409 410 /* 411 * vx_send_rih - send an RIH with spinlock 412 * @cmd: the command to send 413 * 414 * see vx_send_rih_nolock(). 415 */ 416 int vx_send_rih(vx_core_t *chip, int cmd) 417 { 418 unsigned long flags; 419 int err; 420 421 spin_lock_irqsave(&chip->lock, flags); 422 err = vx_send_rih_nolock(chip, cmd); 423 spin_unlock_irqrestore(&chip->lock, flags); 424 return err; 425 } 426 427 #define END_OF_RESET_WAIT_TIME 500 /* us */ 428 429 /** 430 * snd_vx_boot_xilinx - boot up the xilinx interface 431 * @boot: the boot record to load 432 */ 433 int snd_vx_load_boot_image(vx_core_t *chip, const struct firmware *boot) 434 { 435 unsigned int i; 436 int no_fillup = vx_has_new_dsp(chip); 437 438 /* check the length of boot image */ 439 snd_assert(boot->size > 0, return -EINVAL); 440 snd_assert(boot->size % 3 == 0, return -EINVAL); 441 #if 0 442 { 443 /* more strict check */ 444 unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2]; 445 snd_assert(boot->size == (c + 2) * 3, return -EINVAL); 446 } 447 #endif 448 449 /* reset dsp */ 450 vx_reset_dsp(chip); 451 452 udelay(END_OF_RESET_WAIT_TIME); /* another wait? */ 453 454 /* download boot strap */ 455 for (i = 0; i < 0x600; i += 3) { 456 if (i >= boot->size) { 457 if (no_fillup) 458 break; 459 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { 460 snd_printk(KERN_ERR "dsp boot failed at %d\n", i); 461 return -EIO; 462 } 463 vx_outb(chip, TXH, 0); 464 vx_outb(chip, TXM, 0); 465 vx_outb(chip, TXL, 0); 466 } else { 467 unsigned char *image = boot->data + i; 468 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { 469 snd_printk(KERN_ERR "dsp boot failed at %d\n", i); 470 return -EIO; 471 } 472 vx_outb(chip, TXH, image[0]); 473 vx_outb(chip, TXM, image[1]); 474 vx_outb(chip, TXL, image[2]); 475 } 476 } 477 return 0; 478 } 479 480 /* 481 * vx_test_irq_src - query the source of interrupts 482 * 483 * called from irq handler only 484 */ 485 static int vx_test_irq_src(vx_core_t *chip, unsigned int *ret) 486 { 487 int err; 488 489 vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT); 490 spin_lock(&chip->lock); 491 err = vx_send_msg_nolock(chip, &chip->irq_rmh); 492 if (err < 0) 493 *ret = 0; 494 else 495 *ret = chip->irq_rmh.Stat[0]; 496 spin_unlock(&chip->lock); 497 return err; 498 } 499 500 501 /* 502 * vx_interrupt - soft irq handler 503 */ 504 static void vx_interrupt(unsigned long private_data) 505 { 506 vx_core_t *chip = (vx_core_t *) private_data; 507 unsigned int events; 508 509 if (chip->chip_status & VX_STAT_IS_STALE) 510 return; 511 512 if (vx_test_irq_src(chip, &events) < 0) 513 return; 514 515 #if 0 516 if (events & 0x000800) 517 printk(KERN_ERR "DSP Stream underrun ! IRQ events = 0x%x\n", events); 518 #endif 519 // printk(KERN_DEBUG "IRQ events = 0x%x\n", events); 520 521 /* We must prevent any application using this DSP 522 * and block any further request until the application 523 * either unregisters or reloads the DSP 524 */ 525 if (events & FATAL_DSP_ERROR) { 526 snd_printk(KERN_ERR "vx_core: fatal DSP error!!\n"); 527 return; 528 } 529 530 /* The start on time code conditions are filled (ie the time code 531 * received by the board is equal to one of those given to it). 532 */ 533 if (events & TIME_CODE_EVENT_PENDING) 534 ; /* so far, nothing to do yet */ 535 536 /* The frequency has changed on the board (UER mode). */ 537 if (events & FREQUENCY_CHANGE_EVENT_PENDING) 538 vx_change_frequency(chip); 539 540 /* update the pcm streams */ 541 vx_pcm_update_intr(chip, events); 542 } 543 544 545 /** 546 * snd_vx_irq_handler - interrupt handler 547 */ 548 irqreturn_t snd_vx_irq_handler(int irq, void *dev, struct pt_regs *regs) 549 { 550 vx_core_t *chip = dev; 551 552 if (! (chip->chip_status & VX_STAT_CHIP_INIT) || 553 (chip->chip_status & VX_STAT_IS_STALE)) 554 return IRQ_NONE; 555 if (! vx_test_and_ack(chip)) 556 tasklet_hi_schedule(&chip->tq); 557 return IRQ_HANDLED; 558 } 559 560 561 /* 562 */ 563 static void vx_reset_board(vx_core_t *chip, int cold_reset) 564 { 565 snd_assert(chip->ops->reset_board, return); 566 567 /* current source, later sync'ed with target */ 568 chip->audio_source = VX_AUDIO_SRC_LINE; 569 if (cold_reset) { 570 chip->audio_source_target = chip->audio_source; 571 chip->clock_source = INTERNAL_QUARTZ; 572 chip->clock_mode = VX_CLOCK_MODE_AUTO; 573 chip->freq = 48000; 574 chip->uer_detected = VX_UER_MODE_NOT_PRESENT; 575 chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF; 576 } 577 578 chip->ops->reset_board(chip, cold_reset); 579 580 vx_reset_codec(chip, cold_reset); 581 582 vx_set_internal_clock(chip, chip->freq); 583 584 /* Reset the DSP */ 585 vx_reset_dsp(chip); 586 587 if (vx_is_pcmcia(chip)) { 588 /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */ 589 vx_test_and_ack(chip); 590 vx_validate_irq(chip, 1); 591 } 592 593 /* init CBits */ 594 vx_set_iec958_status(chip, chip->uer_bits); 595 } 596 597 598 /* 599 * proc interface 600 */ 601 602 static void vx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer) 603 { 604 vx_core_t *chip = entry->private_data; 605 static char *audio_src_vxp[] = { "Line", "Mic", "Digital" }; 606 static char *audio_src_vx2[] = { "Analog", "Analog", "Digital" }; 607 static char *clock_mode[] = { "Auto", "Internal", "External" }; 608 static char *clock_src[] = { "Internal", "External" }; 609 static char *uer_type[] = { "Consumer", "Professional", "Not Present" }; 610 611 snd_iprintf(buffer, "%s\n", chip->card->longname); 612 snd_iprintf(buffer, "Xilinx Firmware: %s\n", 613 chip->chip_status & VX_STAT_XILINX_LOADED ? "Loaded" : "No"); 614 snd_iprintf(buffer, "Device Initialized: %s\n", 615 chip->chip_status & VX_STAT_DEVICE_INIT ? "Yes" : "No"); 616 snd_iprintf(buffer, "DSP audio info:"); 617 if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME) 618 snd_iprintf(buffer, " realtime"); 619 if (chip->audio_info & VX_AUDIO_INFO_OFFLINE) 620 snd_iprintf(buffer, " offline"); 621 if (chip->audio_info & VX_AUDIO_INFO_MPEG1) 622 snd_iprintf(buffer, " mpeg1"); 623 if (chip->audio_info & VX_AUDIO_INFO_MPEG2) 624 snd_iprintf(buffer, " mpeg2"); 625 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8) 626 snd_iprintf(buffer, " linear8"); 627 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16) 628 snd_iprintf(buffer, " linear16"); 629 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24) 630 snd_iprintf(buffer, " linear24"); 631 snd_iprintf(buffer, "\n"); 632 snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ? 633 audio_src_vxp[chip->audio_source] : 634 audio_src_vx2[chip->audio_source]); 635 snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]); 636 snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]); 637 snd_iprintf(buffer, "Frequency: %d\n", chip->freq); 638 snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected); 639 snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]); 640 snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n", 641 chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size, 642 chip->ibl.granularity); 643 } 644 645 static void vx_proc_init(vx_core_t *chip) 646 { 647 snd_info_entry_t *entry; 648 649 if (! snd_card_proc_new(chip->card, "vx-status", &entry)) 650 snd_info_set_text_ops(entry, chip, 1024, vx_proc_read); 651 } 652 653 654 /** 655 * snd_vx_dsp_boot - load the DSP boot 656 */ 657 int snd_vx_dsp_boot(vx_core_t *chip, const struct firmware *boot) 658 { 659 int err; 660 int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT); 661 662 vx_reset_board(chip, cold_reset); 663 vx_validate_irq(chip, 0); 664 665 if ((err = snd_vx_load_boot_image(chip, boot)) < 0) 666 return err; 667 snd_vx_delay(chip, 10); 668 669 return 0; 670 } 671 672 /** 673 * snd_vx_dsp_load - load the DSP image 674 */ 675 int snd_vx_dsp_load(vx_core_t *chip, const struct firmware *dsp) 676 { 677 unsigned int i; 678 int err; 679 unsigned int csum = 0; 680 unsigned char *image, *cptr; 681 682 snd_assert(dsp->size % 3 == 0, return -EINVAL); 683 684 vx_toggle_dac_mute(chip, 1); 685 686 /* Transfert data buffer from PC to DSP */ 687 for (i = 0; i < dsp->size; i += 3) { 688 image = dsp->data + i; 689 /* Wait DSP ready for a new read */ 690 if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) { 691 printk("dsp loading error at position %d\n", i); 692 return err; 693 } 694 cptr = image; 695 csum ^= *cptr; 696 csum = (csum >> 24) | (csum << 8); 697 vx_outb(chip, TXH, *cptr++); 698 csum ^= *cptr; 699 csum = (csum >> 24) | (csum << 8); 700 vx_outb(chip, TXM, *cptr++); 701 csum ^= *cptr; 702 csum = (csum >> 24) | (csum << 8); 703 vx_outb(chip, TXL, *cptr++); 704 } 705 snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum); 706 707 snd_vx_delay(chip, 200); 708 709 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) 710 return err; 711 712 vx_toggle_dac_mute(chip, 0); 713 714 vx_test_and_ack(chip); 715 vx_validate_irq(chip, 1); 716 717 return 0; 718 } 719 720 #ifdef CONFIG_PM 721 /* 722 * suspend 723 */ 724 static int snd_vx_suspend(snd_card_t *card, pm_message_t state) 725 { 726 vx_core_t *chip = card->pm_private_data; 727 unsigned int i; 728 729 snd_assert(chip, return -EINVAL); 730 731 chip->chip_status |= VX_STAT_IN_SUSPEND; 732 for (i = 0; i < chip->hw->num_codecs; i++) 733 snd_pcm_suspend_all(chip->pcm[i]); 734 735 return 0; 736 } 737 738 /* 739 * resume 740 */ 741 static int snd_vx_resume(snd_card_t *card) 742 { 743 vx_core_t *chip = card->pm_private_data; 744 int i, err; 745 746 snd_assert(chip, return -EINVAL); 747 748 chip->chip_status &= ~VX_STAT_CHIP_INIT; 749 750 for (i = 0; i < 4; i++) { 751 if (! chip->firmware[i]) 752 continue; 753 err = chip->ops->load_dsp(chip, i, chip->firmware[i]); 754 if (err < 0) { 755 snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i); 756 return -EIO; 757 } 758 } 759 760 chip->chip_status |= VX_STAT_CHIP_INIT; 761 chip->chip_status &= ~VX_STAT_IN_SUSPEND; 762 763 return 0; 764 } 765 766 #endif 767 768 /** 769 * snd_vx_create - constructor for vx_core_t 770 * @hw: hardware specific record 771 * 772 * this function allocates the instance and prepare for the hardware 773 * initialization. 774 * 775 * return the instance pointer if successful, NULL in error. 776 */ 777 vx_core_t *snd_vx_create(snd_card_t *card, struct snd_vx_hardware *hw, 778 struct snd_vx_ops *ops, 779 int extra_size) 780 { 781 vx_core_t *chip; 782 783 snd_assert(card && hw && ops, return NULL); 784 785 chip = kcalloc(1, sizeof(*chip) + extra_size, GFP_KERNEL); 786 if (! chip) { 787 snd_printk(KERN_ERR "vx_core: no memory\n"); 788 return NULL; 789 } 790 spin_lock_init(&chip->lock); 791 spin_lock_init(&chip->irq_lock); 792 chip->irq = -1; 793 chip->hw = hw; 794 chip->type = hw->type; 795 chip->ops = ops; 796 tasklet_init(&chip->tq, vx_interrupt, (unsigned long)chip); 797 init_MUTEX(&chip->mixer_mutex); 798 799 chip->card = card; 800 card->private_data = chip; 801 strcpy(card->driver, hw->name); 802 sprintf(card->shortname, "Digigram %s", hw->name); 803 804 snd_card_set_pm_callback(card, snd_vx_suspend, snd_vx_resume, chip); 805 806 vx_proc_init(chip); 807 808 return chip; 809 } 810 811 /* 812 * module entries 813 */ 814 static int __init alsa_vx_core_init(void) 815 { 816 return 0; 817 } 818 819 static void __exit alsa_vx_core_exit(void) 820 { 821 } 822 823 module_init(alsa_vx_core_init) 824 module_exit(alsa_vx_core_exit) 825 826 /* 827 * exports 828 */ 829 EXPORT_SYMBOL(snd_vx_check_reg_bit); 830 EXPORT_SYMBOL(snd_vx_create); 831 EXPORT_SYMBOL(snd_vx_setup_firmware); 832 EXPORT_SYMBOL(snd_vx_free_firmware); 833 EXPORT_SYMBOL(snd_vx_irq_handler); 834 EXPORT_SYMBOL(snd_vx_delay); 835 EXPORT_SYMBOL(snd_vx_dsp_boot); 836 EXPORT_SYMBOL(snd_vx_dsp_load); 837 EXPORT_SYMBOL(snd_vx_load_boot_image); 838