1/* Hewlett-Packard Harmony audio driver 2 * 3 * This is a driver for the Harmony audio chipset found 4 * on the LASI ASIC of various early HP PA-RISC workstations. 5 * 6 * Copyright (C) 2004, Kyle McMartin <kyle@{debian.org,parisc-linux.org}> 7 * 8 * Based on the previous Harmony incarnations by, 9 * Copyright 2000 (c) Linuxcare Canada, Alex deVries 10 * Copyright 2000-2003 (c) Helge Deller 11 * Copyright 2001 (c) Matthieu Delahaye 12 * Copyright 2001 (c) Jean-Christophe Vaugeois 13 * Copyright 2003 (c) Laurent Canet 14 * Copyright 2004 (c) Stuart Brady 15 * 16 * This program is free software; you can redistribute it and/or modify 17 * it under the terms of the GNU General Public License, version 2, as 18 * published by the Free Software Foundation. 19 * 20 * This program is distributed in the hope that it will be useful, 21 * but WITHOUT ANY WARRANTY; without even the implied warranty of 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 * GNU General Public License for more details. 24 * 25 * You should have received a copy of the GNU General Public License 26 * along with this program; if not, write to the Free Software 27 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 28 * 29 * Notes: 30 * - graveyard and silence buffers last for lifetime of 31 * the driver. playback and capture buffers are allocated 32 * per _open()/_close(). 33 * 34 * TODO: 35 * 36 */ 37 38#include <linux/init.h> 39#include <linux/slab.h> 40#include <linux/time.h> 41#include <linux/wait.h> 42#include <linux/delay.h> 43#include <linux/module.h> 44#include <linux/interrupt.h> 45#include <linux/spinlock.h> 46#include <linux/dma-mapping.h> 47 48#include <sound/core.h> 49#include <sound/pcm.h> 50#include <sound/control.h> 51#include <sound/rawmidi.h> 52#include <sound/initval.h> 53#include <sound/info.h> 54 55#include <asm/io.h> 56#include <asm/hardware.h> 57#include <asm/parisc-device.h> 58 59#include "harmony.h" 60 61static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */ 62static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ 63module_param(index, int, 0444); 64MODULE_PARM_DESC(index, "Index value for Harmony driver."); 65module_param(id, charp, 0444); 66MODULE_PARM_DESC(id, "ID string for Harmony driver."); 67 68 69static struct parisc_device_id snd_harmony_devtable[] = { 70 /* bushmaster / flounder */ 71 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007A }, 72 /* 712 / 715 */ 73 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007B }, 74 /* pace */ 75 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007E }, 76 /* outfield / coral II */ 77 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007F }, 78 { 0, } 79}; 80 81MODULE_DEVICE_TABLE(parisc, snd_harmony_devtable); 82 83#define NAME "harmony" 84#define PFX NAME ": " 85 86static unsigned int snd_harmony_rates[] = { 87 5512, 6615, 8000, 9600, 88 11025, 16000, 18900, 22050, 89 27428, 32000, 33075, 37800, 90 44100, 48000 91}; 92 93static unsigned int rate_bits[14] = { 94 HARMONY_SR_5KHZ, HARMONY_SR_6KHZ, HARMONY_SR_8KHZ, 95 HARMONY_SR_9KHZ, HARMONY_SR_11KHZ, HARMONY_SR_16KHZ, 96 HARMONY_SR_18KHZ, HARMONY_SR_22KHZ, HARMONY_SR_27KHZ, 97 HARMONY_SR_32KHZ, HARMONY_SR_33KHZ, HARMONY_SR_37KHZ, 98 HARMONY_SR_44KHZ, HARMONY_SR_48KHZ 99}; 100 101static struct snd_pcm_hw_constraint_list hw_constraint_rates = { 102 .count = ARRAY_SIZE(snd_harmony_rates), 103 .list = snd_harmony_rates, 104 .mask = 0, 105}; 106 107static inline unsigned long 108harmony_read(struct snd_harmony *h, unsigned r) 109{ 110 return __raw_readl(h->iobase + r); 111} 112 113static inline void 114harmony_write(struct snd_harmony *h, unsigned r, unsigned long v) 115{ 116 __raw_writel(v, h->iobase + r); 117} 118 119static inline void 120harmony_wait_for_control(struct snd_harmony *h) 121{ 122 while (harmony_read(h, HARMONY_CNTL) & HARMONY_CNTL_C) ; 123} 124 125static inline void 126harmony_reset(struct snd_harmony *h) 127{ 128 harmony_write(h, HARMONY_RESET, 1); 129 mdelay(50); 130 harmony_write(h, HARMONY_RESET, 0); 131} 132 133static void 134harmony_disable_interrupts(struct snd_harmony *h) 135{ 136 u32 dstatus; 137 harmony_wait_for_control(h); 138 dstatus = harmony_read(h, HARMONY_DSTATUS); 139 dstatus &= ~HARMONY_DSTATUS_IE; 140 harmony_write(h, HARMONY_DSTATUS, dstatus); 141} 142 143static void 144harmony_enable_interrupts(struct snd_harmony *h) 145{ 146 u32 dstatus; 147 harmony_wait_for_control(h); 148 dstatus = harmony_read(h, HARMONY_DSTATUS); 149 dstatus |= HARMONY_DSTATUS_IE; 150 harmony_write(h, HARMONY_DSTATUS, dstatus); 151} 152 153static void 154harmony_mute(struct snd_harmony *h) 155{ 156 unsigned long flags; 157 158 spin_lock_irqsave(&h->mixer_lock, flags); 159 harmony_wait_for_control(h); 160 harmony_write(h, HARMONY_GAINCTL, HARMONY_GAIN_SILENCE); 161 spin_unlock_irqrestore(&h->mixer_lock, flags); 162} 163 164static void 165harmony_unmute(struct snd_harmony *h) 166{ 167 unsigned long flags; 168 169 spin_lock_irqsave(&h->mixer_lock, flags); 170 harmony_wait_for_control(h); 171 harmony_write(h, HARMONY_GAINCTL, h->st.gain); 172 spin_unlock_irqrestore(&h->mixer_lock, flags); 173} 174 175static void 176harmony_set_control(struct snd_harmony *h) 177{ 178 u32 ctrl; 179 unsigned long flags; 180 181 spin_lock_irqsave(&h->lock, flags); 182 183 ctrl = (HARMONY_CNTL_C | 184 (h->st.format << 6) | 185 (h->st.stereo << 5) | 186 (h->st.rate)); 187 188 harmony_wait_for_control(h); 189 harmony_write(h, HARMONY_CNTL, ctrl); 190 191 spin_unlock_irqrestore(&h->lock, flags); 192} 193 194static irqreturn_t 195snd_harmony_interrupt(int irq, void *dev) 196{ 197 u32 dstatus; 198 struct snd_harmony *h = dev; 199 200 spin_lock(&h->lock); 201 harmony_disable_interrupts(h); 202 harmony_wait_for_control(h); 203 dstatus = harmony_read(h, HARMONY_DSTATUS); 204 spin_unlock(&h->lock); 205 206 if (dstatus & HARMONY_DSTATUS_PN) { 207 if (h->psubs && h->st.playing) { 208 spin_lock(&h->lock); 209 h->pbuf.buf += h->pbuf.count; /* PAGE_SIZE */ 210 h->pbuf.buf %= h->pbuf.size; /* MAX_BUFS*PAGE_SIZE */ 211 212 harmony_write(h, HARMONY_PNXTADD, 213 h->pbuf.addr + h->pbuf.buf); 214 h->stats.play_intr++; 215 spin_unlock(&h->lock); 216 snd_pcm_period_elapsed(h->psubs); 217 } else { 218 spin_lock(&h->lock); 219 harmony_write(h, HARMONY_PNXTADD, h->sdma.addr); 220 h->stats.silence_intr++; 221 spin_unlock(&h->lock); 222 } 223 } 224 225 if (dstatus & HARMONY_DSTATUS_RN) { 226 if (h->csubs && h->st.capturing) { 227 spin_lock(&h->lock); 228 h->cbuf.buf += h->cbuf.count; 229 h->cbuf.buf %= h->cbuf.size; 230 231 harmony_write(h, HARMONY_RNXTADD, 232 h->cbuf.addr + h->cbuf.buf); 233 h->stats.rec_intr++; 234 spin_unlock(&h->lock); 235 snd_pcm_period_elapsed(h->csubs); 236 } else { 237 spin_lock(&h->lock); 238 harmony_write(h, HARMONY_RNXTADD, h->gdma.addr); 239 h->stats.graveyard_intr++; 240 spin_unlock(&h->lock); 241 } 242 } 243 244 spin_lock(&h->lock); 245 harmony_enable_interrupts(h); 246 spin_unlock(&h->lock); 247 248 return IRQ_HANDLED; 249} 250 251static unsigned int 252snd_harmony_rate_bits(int rate) 253{ 254 unsigned int i; 255 256 for (i = 0; i < ARRAY_SIZE(snd_harmony_rates); i++) 257 if (snd_harmony_rates[i] == rate) 258 return rate_bits[i]; 259 260 return HARMONY_SR_44KHZ; 261} 262 263static struct snd_pcm_hardware snd_harmony_playback = 264{ 265 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 266 SNDRV_PCM_INFO_JOINT_DUPLEX | SNDRV_PCM_INFO_MMAP_VALID | 267 SNDRV_PCM_INFO_BLOCK_TRANSFER), 268 .formats = (SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_MU_LAW | 269 SNDRV_PCM_FMTBIT_A_LAW), 270 .rates = (SNDRV_PCM_RATE_5512 | SNDRV_PCM_RATE_8000_48000 | 271 SNDRV_PCM_RATE_KNOT), 272 .rate_min = 5512, 273 .rate_max = 48000, 274 .channels_min = 1, 275 .channels_max = 2, 276 .buffer_bytes_max = MAX_BUF_SIZE, 277 .period_bytes_min = BUF_SIZE, 278 .period_bytes_max = BUF_SIZE, 279 .periods_min = 1, 280 .periods_max = MAX_BUFS, 281 .fifo_size = 0, 282}; 283 284static struct snd_pcm_hardware snd_harmony_capture = 285{ 286 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 287 SNDRV_PCM_INFO_JOINT_DUPLEX | SNDRV_PCM_INFO_MMAP_VALID | 288 SNDRV_PCM_INFO_BLOCK_TRANSFER), 289 .formats = (SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_MU_LAW | 290 SNDRV_PCM_FMTBIT_A_LAW), 291 .rates = (SNDRV_PCM_RATE_5512 | SNDRV_PCM_RATE_8000_48000 | 292 SNDRV_PCM_RATE_KNOT), 293 .rate_min = 5512, 294 .rate_max = 48000, 295 .channels_min = 1, 296 .channels_max = 2, 297 .buffer_bytes_max = MAX_BUF_SIZE, 298 .period_bytes_min = BUF_SIZE, 299 .period_bytes_max = BUF_SIZE, 300 .periods_min = 1, 301 .periods_max = MAX_BUFS, 302 .fifo_size = 0, 303}; 304 305static int 306snd_harmony_playback_trigger(struct snd_pcm_substream *ss, int cmd) 307{ 308 struct snd_harmony *h = snd_pcm_substream_chip(ss); 309 310 if (h->st.capturing) 311 return -EBUSY; 312 313 spin_lock(&h->lock); 314 switch (cmd) { 315 case SNDRV_PCM_TRIGGER_START: 316 h->st.playing = 1; 317 harmony_write(h, HARMONY_PNXTADD, h->pbuf.addr); 318 harmony_write(h, HARMONY_RNXTADD, h->gdma.addr); 319 harmony_unmute(h); 320 harmony_enable_interrupts(h); 321 break; 322 case SNDRV_PCM_TRIGGER_STOP: 323 h->st.playing = 0; 324 harmony_mute(h); 325 harmony_write(h, HARMONY_PNXTADD, h->sdma.addr); 326 harmony_disable_interrupts(h); 327 break; 328 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 329 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 330 case SNDRV_PCM_TRIGGER_SUSPEND: 331 default: 332 spin_unlock(&h->lock); 333 snd_BUG(); 334 return -EINVAL; 335 } 336 spin_unlock(&h->lock); 337 338 return 0; 339} 340 341static int 342snd_harmony_capture_trigger(struct snd_pcm_substream *ss, int cmd) 343{ 344 struct snd_harmony *h = snd_pcm_substream_chip(ss); 345 346 if (h->st.playing) 347 return -EBUSY; 348 349 spin_lock(&h->lock); 350 switch (cmd) { 351 case SNDRV_PCM_TRIGGER_START: 352 h->st.capturing = 1; 353 harmony_write(h, HARMONY_PNXTADD, h->sdma.addr); 354 harmony_write(h, HARMONY_RNXTADD, h->cbuf.addr); 355 harmony_unmute(h); 356 harmony_enable_interrupts(h); 357 break; 358 case SNDRV_PCM_TRIGGER_STOP: 359 h->st.capturing = 0; 360 harmony_mute(h); 361 harmony_write(h, HARMONY_RNXTADD, h->gdma.addr); 362 harmony_disable_interrupts(h); 363 break; 364 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 365 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 366 case SNDRV_PCM_TRIGGER_SUSPEND: 367 default: 368 spin_unlock(&h->lock); 369 snd_BUG(); 370 return -EINVAL; 371 } 372 spin_unlock(&h->lock); 373 374 return 0; 375} 376 377static int 378snd_harmony_set_data_format(struct snd_harmony *h, int fmt, int force) 379{ 380 int o = h->st.format; 381 int n; 382 383 switch(fmt) { 384 case SNDRV_PCM_FORMAT_S16_BE: 385 n = HARMONY_DF_16BIT_LINEAR; 386 break; 387 case SNDRV_PCM_FORMAT_A_LAW: 388 n = HARMONY_DF_8BIT_ALAW; 389 break; 390 case SNDRV_PCM_FORMAT_MU_LAW: 391 n = HARMONY_DF_8BIT_ULAW; 392 break; 393 default: 394 n = HARMONY_DF_16BIT_LINEAR; 395 break; 396 } 397 398 if (force || o != n) { 399 snd_pcm_format_set_silence(fmt, h->sdma.area, SILENCE_BUFSZ / 400 (snd_pcm_format_physical_width(fmt) 401 / 8)); 402 } 403 404 return n; 405} 406 407static int 408snd_harmony_playback_prepare(struct snd_pcm_substream *ss) 409{ 410 struct snd_harmony *h = snd_pcm_substream_chip(ss); 411 struct snd_pcm_runtime *rt = ss->runtime; 412 413 if (h->st.capturing) 414 return -EBUSY; 415 416 h->pbuf.size = snd_pcm_lib_buffer_bytes(ss); 417 h->pbuf.count = snd_pcm_lib_period_bytes(ss); 418 if (h->pbuf.buf >= h->pbuf.size) 419 h->pbuf.buf = 0; 420 h->st.playing = 0; 421 422 h->st.rate = snd_harmony_rate_bits(rt->rate); 423 h->st.format = snd_harmony_set_data_format(h, rt->format, 0); 424 425 if (rt->channels == 2) 426 h->st.stereo = HARMONY_SS_STEREO; 427 else 428 h->st.stereo = HARMONY_SS_MONO; 429 430 harmony_set_control(h); 431 432 h->pbuf.addr = rt->dma_addr; 433 434 return 0; 435} 436 437static int 438snd_harmony_capture_prepare(struct snd_pcm_substream *ss) 439{ 440 struct snd_harmony *h = snd_pcm_substream_chip(ss); 441 struct snd_pcm_runtime *rt = ss->runtime; 442 443 if (h->st.playing) 444 return -EBUSY; 445 446 h->cbuf.size = snd_pcm_lib_buffer_bytes(ss); 447 h->cbuf.count = snd_pcm_lib_period_bytes(ss); 448 if (h->cbuf.buf >= h->cbuf.size) 449 h->cbuf.buf = 0; 450 h->st.capturing = 0; 451 452 h->st.rate = snd_harmony_rate_bits(rt->rate); 453 h->st.format = snd_harmony_set_data_format(h, rt->format, 0); 454 455 if (rt->channels == 2) 456 h->st.stereo = HARMONY_SS_STEREO; 457 else 458 h->st.stereo = HARMONY_SS_MONO; 459 460 harmony_set_control(h); 461 462 h->cbuf.addr = rt->dma_addr; 463 464 return 0; 465} 466 467static snd_pcm_uframes_t 468snd_harmony_playback_pointer(struct snd_pcm_substream *ss) 469{ 470 struct snd_pcm_runtime *rt = ss->runtime; 471 struct snd_harmony *h = snd_pcm_substream_chip(ss); 472 unsigned long pcuradd; 473 unsigned long played; 474 475 if (!(h->st.playing) || (h->psubs == NULL)) 476 return 0; 477 478 if ((h->pbuf.addr == 0) || (h->pbuf.size == 0)) 479 return 0; 480 481 pcuradd = harmony_read(h, HARMONY_PCURADD); 482 played = pcuradd - h->pbuf.addr; 483 484#ifdef HARMONY_DEBUG 485 printk(KERN_DEBUG PFX "playback_pointer is 0x%lx-0x%lx = %d bytes\n", 486 pcuradd, h->pbuf.addr, played); 487#endif 488 489 if (pcuradd > h->pbuf.addr + h->pbuf.size) { 490 return 0; 491 } 492 493 return bytes_to_frames(rt, played); 494} 495 496static snd_pcm_uframes_t 497snd_harmony_capture_pointer(struct snd_pcm_substream *ss) 498{ 499 struct snd_pcm_runtime *rt = ss->runtime; 500 struct snd_harmony *h = snd_pcm_substream_chip(ss); 501 unsigned long rcuradd; 502 unsigned long caught; 503 504 if (!(h->st.capturing) || (h->csubs == NULL)) 505 return 0; 506 507 if ((h->cbuf.addr == 0) || (h->cbuf.size == 0)) 508 return 0; 509 510 rcuradd = harmony_read(h, HARMONY_RCURADD); 511 caught = rcuradd - h->cbuf.addr; 512 513#ifdef HARMONY_DEBUG 514 printk(KERN_DEBUG PFX "capture_pointer is 0x%lx-0x%lx = %d bytes\n", 515 rcuradd, h->cbuf.addr, caught); 516#endif 517 518 if (rcuradd > h->cbuf.addr + h->cbuf.size) { 519 return 0; 520 } 521 522 return bytes_to_frames(rt, caught); 523} 524 525static int 526snd_harmony_playback_open(struct snd_pcm_substream *ss) 527{ 528 struct snd_harmony *h = snd_pcm_substream_chip(ss); 529 struct snd_pcm_runtime *rt = ss->runtime; 530 int err; 531 532 h->psubs = ss; 533 rt->hw = snd_harmony_playback; 534 snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE, 535 &hw_constraint_rates); 536 537 err = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS); 538 if (err < 0) 539 return err; 540 541 return 0; 542} 543 544static int 545snd_harmony_capture_open(struct snd_pcm_substream *ss) 546{ 547 struct snd_harmony *h = snd_pcm_substream_chip(ss); 548 struct snd_pcm_runtime *rt = ss->runtime; 549 int err; 550 551 h->csubs = ss; 552 rt->hw = snd_harmony_capture; 553 snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE, 554 &hw_constraint_rates); 555 556 err = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS); 557 if (err < 0) 558 return err; 559 560 return 0; 561} 562 563static int 564snd_harmony_playback_close(struct snd_pcm_substream *ss) 565{ 566 struct snd_harmony *h = snd_pcm_substream_chip(ss); 567 h->psubs = NULL; 568 return 0; 569} 570 571static int 572snd_harmony_capture_close(struct snd_pcm_substream *ss) 573{ 574 struct snd_harmony *h = snd_pcm_substream_chip(ss); 575 h->csubs = NULL; 576 return 0; 577} 578 579static int 580snd_harmony_hw_params(struct snd_pcm_substream *ss, 581 struct snd_pcm_hw_params *hw) 582{ 583 int err; 584 struct snd_harmony *h = snd_pcm_substream_chip(ss); 585 586 err = snd_pcm_lib_malloc_pages(ss, params_buffer_bytes(hw)); 587 if (err > 0 && h->dma.type == SNDRV_DMA_TYPE_CONTINUOUS) 588 ss->runtime->dma_addr = __pa(ss->runtime->dma_area); 589 590 return err; 591} 592 593static int 594snd_harmony_hw_free(struct snd_pcm_substream *ss) 595{ 596 return snd_pcm_lib_free_pages(ss); 597} 598 599static struct snd_pcm_ops snd_harmony_playback_ops = { 600 .open = snd_harmony_playback_open, 601 .close = snd_harmony_playback_close, 602 .ioctl = snd_pcm_lib_ioctl, 603 .hw_params = snd_harmony_hw_params, 604 .hw_free = snd_harmony_hw_free, 605 .prepare = snd_harmony_playback_prepare, 606 .trigger = snd_harmony_playback_trigger, 607 .pointer = snd_harmony_playback_pointer, 608}; 609 610static struct snd_pcm_ops snd_harmony_capture_ops = { 611 .open = snd_harmony_capture_open, 612 .close = snd_harmony_capture_close, 613 .ioctl = snd_pcm_lib_ioctl, 614 .hw_params = snd_harmony_hw_params, 615 .hw_free = snd_harmony_hw_free, 616 .prepare = snd_harmony_capture_prepare, 617 .trigger = snd_harmony_capture_trigger, 618 .pointer = snd_harmony_capture_pointer, 619}; 620 621static int 622snd_harmony_pcm_init(struct snd_harmony *h) 623{ 624 struct snd_pcm *pcm; 625 int err; 626 627 if (snd_BUG_ON(!h)) 628 return -EINVAL; 629 630 harmony_disable_interrupts(h); 631 632 err = snd_pcm_new(h->card, "harmony", 0, 1, 1, &pcm); 633 if (err < 0) 634 return err; 635 636 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, 637 &snd_harmony_playback_ops); 638 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, 639 &snd_harmony_capture_ops); 640 641 pcm->private_data = h; 642 pcm->info_flags = 0; 643 strcpy(pcm->name, "harmony"); 644 h->pcm = pcm; 645 646 h->psubs = NULL; 647 h->csubs = NULL; 648 649 /* initialize graveyard buffer */ 650 h->dma.type = SNDRV_DMA_TYPE_DEV; 651 h->dma.dev = &h->dev->dev; 652 err = snd_dma_alloc_pages(h->dma.type, 653 h->dma.dev, 654 BUF_SIZE*GRAVEYARD_BUFS, 655 &h->gdma); 656 if (err < 0) { 657 printk(KERN_ERR PFX "cannot allocate graveyard buffer!\n"); 658 return err; 659 } 660 661 /* initialize silence buffers */ 662 err = snd_dma_alloc_pages(h->dma.type, 663 h->dma.dev, 664 BUF_SIZE*SILENCE_BUFS, 665 &h->sdma); 666 if (err < 0) { 667 printk(KERN_ERR PFX "cannot allocate silence buffer!\n"); 668 return err; 669 } 670 671 /* pre-allocate space for DMA */ 672 err = snd_pcm_lib_preallocate_pages_for_all(pcm, h->dma.type, 673 h->dma.dev, 674 MAX_BUF_SIZE, 675 MAX_BUF_SIZE); 676 if (err < 0) { 677 printk(KERN_ERR PFX "buffer allocation error: %d\n", err); 678 return err; 679 } 680 681 h->st.format = snd_harmony_set_data_format(h, 682 SNDRV_PCM_FORMAT_S16_BE, 1); 683 684 return 0; 685} 686 687static void 688snd_harmony_set_new_gain(struct snd_harmony *h) 689{ 690 harmony_wait_for_control(h); 691 harmony_write(h, HARMONY_GAINCTL, h->st.gain); 692} 693 694static int 695snd_harmony_mixercontrol_info(struct snd_kcontrol *kc, 696 struct snd_ctl_elem_info *uinfo) 697{ 698 int mask = (kc->private_value >> 16) & 0xff; 699 int left_shift = (kc->private_value) & 0xff; 700 int right_shift = (kc->private_value >> 8) & 0xff; 701 702 uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : 703 SNDRV_CTL_ELEM_TYPE_INTEGER; 704 uinfo->count = left_shift == right_shift ? 1 : 2; 705 uinfo->value.integer.min = 0; 706 uinfo->value.integer.max = mask; 707 708 return 0; 709} 710 711static int 712snd_harmony_volume_get(struct snd_kcontrol *kc, 713 struct snd_ctl_elem_value *ucontrol) 714{ 715 struct snd_harmony *h = snd_kcontrol_chip(kc); 716 int shift_left = (kc->private_value) & 0xff; 717 int shift_right = (kc->private_value >> 8) & 0xff; 718 int mask = (kc->private_value >> 16) & 0xff; 719 int invert = (kc->private_value >> 24) & 0xff; 720 int left, right; 721 722 spin_lock_irq(&h->mixer_lock); 723 724 left = (h->st.gain >> shift_left) & mask; 725 right = (h->st.gain >> shift_right) & mask; 726 if (invert) { 727 left = mask - left; 728 right = mask - right; 729 } 730 731 ucontrol->value.integer.value[0] = left; 732 if (shift_left != shift_right) 733 ucontrol->value.integer.value[1] = right; 734 735 spin_unlock_irq(&h->mixer_lock); 736 737 return 0; 738} 739 740static int 741snd_harmony_volume_put(struct snd_kcontrol *kc, 742 struct snd_ctl_elem_value *ucontrol) 743{ 744 struct snd_harmony *h = snd_kcontrol_chip(kc); 745 int shift_left = (kc->private_value) & 0xff; 746 int shift_right = (kc->private_value >> 8) & 0xff; 747 int mask = (kc->private_value >> 16) & 0xff; 748 int invert = (kc->private_value >> 24) & 0xff; 749 int left, right; 750 int old_gain = h->st.gain; 751 752 spin_lock_irq(&h->mixer_lock); 753 754 left = ucontrol->value.integer.value[0] & mask; 755 if (invert) 756 left = mask - left; 757 h->st.gain &= ~( (mask << shift_left ) ); 758 h->st.gain |= (left << shift_left); 759 760 if (shift_left != shift_right) { 761 right = ucontrol->value.integer.value[1] & mask; 762 if (invert) 763 right = mask - right; 764 h->st.gain &= ~( (mask << shift_right) ); 765 h->st.gain |= (right << shift_right); 766 } 767 768 snd_harmony_set_new_gain(h); 769 770 spin_unlock_irq(&h->mixer_lock); 771 772 return h->st.gain != old_gain; 773} 774 775static int 776snd_harmony_captureroute_info(struct snd_kcontrol *kc, 777 struct snd_ctl_elem_info *uinfo) 778{ 779 static char *texts[2] = { "Line", "Mic" }; 780 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 781 uinfo->count = 1; 782 uinfo->value.enumerated.items = 2; 783 if (uinfo->value.enumerated.item > 1) 784 uinfo->value.enumerated.item = 1; 785 strcpy(uinfo->value.enumerated.name, 786 texts[uinfo->value.enumerated.item]); 787 return 0; 788} 789 790static int 791snd_harmony_captureroute_get(struct snd_kcontrol *kc, 792 struct snd_ctl_elem_value *ucontrol) 793{ 794 struct snd_harmony *h = snd_kcontrol_chip(kc); 795 int value; 796 797 spin_lock_irq(&h->mixer_lock); 798 799 value = (h->st.gain >> HARMONY_GAIN_IS_SHIFT) & 1; 800 ucontrol->value.enumerated.item[0] = value; 801 802 spin_unlock_irq(&h->mixer_lock); 803 804 return 0; 805} 806 807static int 808snd_harmony_captureroute_put(struct snd_kcontrol *kc, 809 struct snd_ctl_elem_value *ucontrol) 810{ 811 struct snd_harmony *h = snd_kcontrol_chip(kc); 812 int value; 813 int old_gain = h->st.gain; 814 815 spin_lock_irq(&h->mixer_lock); 816 817 value = ucontrol->value.enumerated.item[0] & 1; 818 h->st.gain &= ~HARMONY_GAIN_IS_MASK; 819 h->st.gain |= value << HARMONY_GAIN_IS_SHIFT; 820 821 snd_harmony_set_new_gain(h); 822 823 spin_unlock_irq(&h->mixer_lock); 824 825 return h->st.gain != old_gain; 826} 827 828#define HARMONY_CONTROLS ARRAY_SIZE(snd_harmony_controls) 829 830#define HARMONY_VOLUME(xname, left_shift, right_shift, mask, invert) \ 831{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 832 .info = snd_harmony_mixercontrol_info, \ 833 .get = snd_harmony_volume_get, .put = snd_harmony_volume_put, \ 834 .private_value = ((left_shift) | ((right_shift) << 8) | \ 835 ((mask) << 16) | ((invert) << 24)) } 836 837static struct snd_kcontrol_new snd_harmony_controls[] = { 838 HARMONY_VOLUME("Master Playback Volume", HARMONY_GAIN_LO_SHIFT, 839 HARMONY_GAIN_RO_SHIFT, HARMONY_GAIN_OUT, 1), 840 HARMONY_VOLUME("Capture Volume", HARMONY_GAIN_LI_SHIFT, 841 HARMONY_GAIN_RI_SHIFT, HARMONY_GAIN_IN, 0), 842 HARMONY_VOLUME("Monitor Volume", HARMONY_GAIN_MA_SHIFT, 843 HARMONY_GAIN_MA_SHIFT, HARMONY_GAIN_MA, 1), 844 { 845 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 846 .name = "Input Route", 847 .info = snd_harmony_captureroute_info, 848 .get = snd_harmony_captureroute_get, 849 .put = snd_harmony_captureroute_put 850 }, 851 HARMONY_VOLUME("Internal Speaker Switch", HARMONY_GAIN_SE_SHIFT, 852 HARMONY_GAIN_SE_SHIFT, 1, 0), 853 HARMONY_VOLUME("Line-Out Switch", HARMONY_GAIN_LE_SHIFT, 854 HARMONY_GAIN_LE_SHIFT, 1, 0), 855 HARMONY_VOLUME("Headphones Switch", HARMONY_GAIN_HE_SHIFT, 856 HARMONY_GAIN_HE_SHIFT, 1, 0), 857}; 858 859static void __devinit 860snd_harmony_mixer_reset(struct snd_harmony *h) 861{ 862 harmony_mute(h); 863 harmony_reset(h); 864 h->st.gain = HARMONY_GAIN_DEFAULT; 865 harmony_unmute(h); 866} 867 868static int __devinit 869snd_harmony_mixer_init(struct snd_harmony *h) 870{ 871 struct snd_card *card; 872 int idx, err; 873 874 if (snd_BUG_ON(!h)) 875 return -EINVAL; 876 card = h->card; 877 strcpy(card->mixername, "Harmony Gain control interface"); 878 879 for (idx = 0; idx < HARMONY_CONTROLS; idx++) { 880 err = snd_ctl_add(card, 881 snd_ctl_new1(&snd_harmony_controls[idx], h)); 882 if (err < 0) 883 return err; 884 } 885 886 snd_harmony_mixer_reset(h); 887 888 return 0; 889} 890 891static int 892snd_harmony_free(struct snd_harmony *h) 893{ 894 if (h->gdma.addr) 895 snd_dma_free_pages(&h->gdma); 896 if (h->sdma.addr) 897 snd_dma_free_pages(&h->sdma); 898 899 if (h->irq >= 0) 900 free_irq(h->irq, h); 901 902 if (h->iobase) 903 iounmap(h->iobase); 904 905 parisc_set_drvdata(h->dev, NULL); 906 907 kfree(h); 908 return 0; 909} 910 911static int 912snd_harmony_dev_free(struct snd_device *dev) 913{ 914 struct snd_harmony *h = dev->device_data; 915 return snd_harmony_free(h); 916} 917 918static int __devinit 919snd_harmony_create(struct snd_card *card, 920 struct parisc_device *padev, 921 struct snd_harmony **rchip) 922{ 923 int err; 924 struct snd_harmony *h; 925 static struct snd_device_ops ops = { 926 .dev_free = snd_harmony_dev_free, 927 }; 928 929 *rchip = NULL; 930 931 h = kzalloc(sizeof(*h), GFP_KERNEL); 932 if (h == NULL) 933 return -ENOMEM; 934 935 h->hpa = padev->hpa.start; 936 h->card = card; 937 h->dev = padev; 938 h->irq = -1; 939 h->iobase = ioremap_nocache(padev->hpa.start, HARMONY_SIZE); 940 if (h->iobase == NULL) { 941 printk(KERN_ERR PFX "unable to remap hpa 0x%lx\n", 942 (unsigned long)padev->hpa.start); 943 err = -EBUSY; 944 goto free_and_ret; 945 } 946 947 err = request_irq(padev->irq, snd_harmony_interrupt, 0, 948 "harmony", h); 949 if (err) { 950 printk(KERN_ERR PFX "could not obtain interrupt %d", 951 padev->irq); 952 goto free_and_ret; 953 } 954 h->irq = padev->irq; 955 956 spin_lock_init(&h->mixer_lock); 957 spin_lock_init(&h->lock); 958 959 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, 960 h, &ops)) < 0) { 961 goto free_and_ret; 962 } 963 964 snd_card_set_dev(card, &padev->dev); 965 966 *rchip = h; 967 968 return 0; 969 970free_and_ret: 971 snd_harmony_free(h); 972 return err; 973} 974 975static int __devinit 976snd_harmony_probe(struct parisc_device *padev) 977{ 978 int err; 979 struct snd_card *card; 980 struct snd_harmony *h; 981 982 err = snd_card_create(index, id, THIS_MODULE, 0, &card); 983 if (err < 0) 984 return err; 985 986 err = snd_harmony_create(card, padev, &h); 987 if (err < 0) 988 goto free_and_ret; 989 990 err = snd_harmony_pcm_init(h); 991 if (err < 0) 992 goto free_and_ret; 993 994 err = snd_harmony_mixer_init(h); 995 if (err < 0) 996 goto free_and_ret; 997 998 strcpy(card->driver, "harmony"); 999 strcpy(card->shortname, "Harmony"); 1000 sprintf(card->longname, "%s at 0x%lx, irq %i", 1001 card->shortname, h->hpa, h->irq); 1002 1003 err = snd_card_register(card); 1004 if (err < 0) 1005 goto free_and_ret; 1006 1007 parisc_set_drvdata(padev, card); 1008 return 0; 1009 1010free_and_ret: 1011 snd_card_free(card); 1012 return err; 1013} 1014 1015static int __devexit 1016snd_harmony_remove(struct parisc_device *padev) 1017{ 1018 snd_card_free(parisc_get_drvdata(padev)); 1019 parisc_set_drvdata(padev, NULL); 1020 return 0; 1021} 1022 1023static struct parisc_driver snd_harmony_driver = { 1024 .name = "harmony", 1025 .id_table = snd_harmony_devtable, 1026 .probe = snd_harmony_probe, 1027 .remove = __devexit_p(snd_harmony_remove), 1028}; 1029 1030static int __init 1031alsa_harmony_init(void) 1032{ 1033 return register_parisc_driver(&snd_harmony_driver); 1034} 1035 1036static void __exit 1037alsa_harmony_fini(void) 1038{ 1039 unregister_parisc_driver(&snd_harmony_driver); 1040} 1041 1042MODULE_LICENSE("GPL"); 1043MODULE_AUTHOR("Kyle McMartin <kyle@parisc-linux.org>"); 1044MODULE_DESCRIPTION("Harmony sound driver"); 1045 1046module_init(alsa_harmony_init); 1047module_exit(alsa_harmony_fini); 1048