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1// SPDX-License-Identifier: GPL-2.0-only2/*****************************************************************************3 *4 * Copyright (C) 2008 Cedric Bregardis <cedric.bregardis@free.fr> and5 * Jean-Christian Hassler <jhassler@free.fr>6 *7 * This file is part of the Audiowerk2 ALSA driver8 *9 *****************************************************************************/10#include <linux/init.h>11#include <linux/pci.h>12#include <linux/dma-mapping.h>13#include <linux/slab.h>14#include <linux/interrupt.h>15#include <linux/delay.h>16#include <linux/io.h>17#include <linux/module.h>18#include <sound/core.h>19#include <sound/initval.h>20#include <sound/pcm.h>21#include <sound/pcm_params.h>22#include <sound/control.h>23 24#include "saa7146.h"25#include "aw2-saa7146.h"26 27MODULE_AUTHOR("Cedric Bregardis <cedric.bregardis@free.fr>, "28 "Jean-Christian Hassler <jhassler@free.fr>");29MODULE_DESCRIPTION("Emagic Audiowerk 2 sound driver");30MODULE_LICENSE("GPL");31 32/*********************************33 * DEFINES34 ********************************/35#define CTL_ROUTE_ANALOG 036#define CTL_ROUTE_DIGITAL 137 38/*********************************39 * TYPEDEFS40 ********************************/41 /* hardware definition */42static const struct snd_pcm_hardware snd_aw2_playback_hw = {43 .info = (SNDRV_PCM_INFO_MMAP |44 SNDRV_PCM_INFO_INTERLEAVED |45 SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),46 .formats = SNDRV_PCM_FMTBIT_S16_LE,47 .rates = SNDRV_PCM_RATE_44100,48 .rate_min = 44100,49 .rate_max = 44100,50 .channels_min = 2,51 .channels_max = 4,52 .buffer_bytes_max = 32768,53 .period_bytes_min = 4096,54 .period_bytes_max = 32768,55 .periods_min = 1,56 .periods_max = 1024,57};58 59static const struct snd_pcm_hardware snd_aw2_capture_hw = {60 .info = (SNDRV_PCM_INFO_MMAP |61 SNDRV_PCM_INFO_INTERLEAVED |62 SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),63 .formats = SNDRV_PCM_FMTBIT_S16_LE,64 .rates = SNDRV_PCM_RATE_44100,65 .rate_min = 44100,66 .rate_max = 44100,67 .channels_min = 2,68 .channels_max = 2,69 .buffer_bytes_max = 32768,70 .period_bytes_min = 4096,71 .period_bytes_max = 32768,72 .periods_min = 1,73 .periods_max = 1024,74};75 76struct aw2_pcm_device {77 struct snd_pcm *pcm;78 unsigned int stream_number;79 struct aw2 *chip;80};81 82struct aw2 {83 struct snd_aw2_saa7146 saa7146;84 85 struct pci_dev *pci;86 int irq;87 spinlock_t reg_lock;88 struct mutex mtx;89 90 unsigned long iobase_phys;91 void __iomem *iobase_virt;92 93 struct snd_card *card;94 95 struct aw2_pcm_device device_playback[NB_STREAM_PLAYBACK];96 struct aw2_pcm_device device_capture[NB_STREAM_CAPTURE];97};98 99/*********************************100 * FUNCTION DECLARATIONS101 ********************************/102static int snd_aw2_create(struct snd_card *card, struct pci_dev *pci);103static int snd_aw2_probe(struct pci_dev *pci,104 const struct pci_device_id *pci_id);105static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream);106static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream);107static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream);108static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream);109static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream);110static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream);111static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,112 int cmd);113static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,114 int cmd);115static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream116 *substream);117static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream118 *substream);119static int snd_aw2_new_pcm(struct aw2 *chip);120 121static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,122 struct snd_ctl_elem_info *uinfo);123static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,124 struct snd_ctl_elem_value125 *ucontrol);126static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,127 struct snd_ctl_elem_value128 *ucontrol);129 130/*********************************131 * VARIABLES132 ********************************/133static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;134static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;135static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;136 137module_param_array(index, int, NULL, 0444);138MODULE_PARM_DESC(index, "Index value for Audiowerk2 soundcard.");139module_param_array(id, charp, NULL, 0444);140MODULE_PARM_DESC(id, "ID string for the Audiowerk2 soundcard.");141module_param_array(enable, bool, NULL, 0444);142MODULE_PARM_DESC(enable, "Enable Audiowerk2 soundcard.");143 144static const struct pci_device_id snd_aw2_ids[] = {145 {PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146, 0, 0,146 0, 0, 0},147 {0}148};149 150MODULE_DEVICE_TABLE(pci, snd_aw2_ids);151 152/* pci_driver definition */153static struct pci_driver aw2_driver = {154 .name = KBUILD_MODNAME,155 .id_table = snd_aw2_ids,156 .probe = snd_aw2_probe,157};158 159module_pci_driver(aw2_driver);160 161/* operators for playback PCM alsa interface */162static const struct snd_pcm_ops snd_aw2_playback_ops = {163 .open = snd_aw2_pcm_playback_open,164 .close = snd_aw2_pcm_playback_close,165 .prepare = snd_aw2_pcm_prepare_playback,166 .trigger = snd_aw2_pcm_trigger_playback,167 .pointer = snd_aw2_pcm_pointer_playback,168};169 170/* operators for capture PCM alsa interface */171static const struct snd_pcm_ops snd_aw2_capture_ops = {172 .open = snd_aw2_pcm_capture_open,173 .close = snd_aw2_pcm_capture_close,174 .prepare = snd_aw2_pcm_prepare_capture,175 .trigger = snd_aw2_pcm_trigger_capture,176 .pointer = snd_aw2_pcm_pointer_capture,177};178 179static const struct snd_kcontrol_new aw2_control = {180 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,181 .name = "PCM Capture Route",182 .index = 0,183 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,184 .private_value = 0xffff,185 .info = snd_aw2_control_switch_capture_info,186 .get = snd_aw2_control_switch_capture_get,187 .put = snd_aw2_control_switch_capture_put188};189 190/*********************************191 * FUNCTION IMPLEMENTATIONS192 ********************************/193 194/* component-destructor */195static void snd_aw2_free(struct snd_card *card)196{197 struct aw2 *chip = card->private_data;198 199 /* Free hardware */200 snd_aw2_saa7146_free(&chip->saa7146);201}202 203/* chip-specific constructor */204static int snd_aw2_create(struct snd_card *card,205 struct pci_dev *pci)206{207 struct aw2 *chip = card->private_data;208 int err;209 210 /* initialize the PCI entry */211 err = pcim_enable_device(pci);212 if (err < 0)213 return err;214 pci_set_master(pci);215 216 /* check PCI availability (32bit DMA) */217 if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(32))) {218 dev_err(card->dev, "Impossible to set 32bit mask DMA\n");219 return -ENXIO;220 }221 222 /* initialize the stuff */223 chip->card = card;224 chip->pci = pci;225 chip->irq = -1;226 227 /* (1) PCI resource allocation */228 err = pcim_iomap_regions(pci, 1 << 0, "Audiowerk2");229 if (err < 0)230 return err;231 chip->iobase_phys = pci_resource_start(pci, 0);232 chip->iobase_virt = pcim_iomap_table(pci)[0];233 234 /* (2) initialization of the chip hardware */235 snd_aw2_saa7146_setup(&chip->saa7146, chip->iobase_virt);236 237 if (devm_request_irq(&pci->dev, pci->irq, snd_aw2_saa7146_interrupt,238 IRQF_SHARED, KBUILD_MODNAME, chip)) {239 dev_err(card->dev, "Cannot grab irq %d\n", pci->irq);240 return -EBUSY;241 }242 chip->irq = pci->irq;243 card->sync_irq = chip->irq;244 card->private_free = snd_aw2_free;245 246 dev_info(card->dev,247 "Audiowerk 2 sound card (saa7146 chipset) detected and managed\n");248 return 0;249}250 251/* constructor */252static int snd_aw2_probe(struct pci_dev *pci,253 const struct pci_device_id *pci_id)254{255 static int dev;256 struct snd_card *card;257 struct aw2 *chip;258 int err;259 260 /* (1) Continue if device is not enabled, else inc dev */261 if (dev >= SNDRV_CARDS)262 return -ENODEV;263 if (!enable[dev]) {264 dev++;265 return -ENOENT;266 }267 268 /* (2) Create card instance */269 err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,270 sizeof(*chip), &card);271 if (err < 0)272 return err;273 chip = card->private_data;274 275 /* (3) Create main component */276 err = snd_aw2_create(card, pci);277 if (err < 0)278 goto error;279 280 /* initialize mutex */281 mutex_init(&chip->mtx);282 /* init spinlock */283 spin_lock_init(&chip->reg_lock);284 /* (4) Define driver ID and name string */285 strcpy(card->driver, "aw2");286 strcpy(card->shortname, "Audiowerk2");287 288 sprintf(card->longname, "%s with SAA7146 irq %i",289 card->shortname, chip->irq);290 291 /* (5) Create other components */292 snd_aw2_new_pcm(chip);293 294 /* (6) Register card instance */295 err = snd_card_register(card);296 if (err < 0)297 goto error;298 299 /* (7) Set PCI driver data */300 pci_set_drvdata(pci, card);301 302 dev++;303 return 0;304 305 error:306 snd_card_free(card);307 return err;308}309 310/* open callback */311static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream)312{313 struct snd_pcm_runtime *runtime = substream->runtime;314 315 dev_dbg(substream->pcm->card->dev, "Playback_open\n");316 runtime->hw = snd_aw2_playback_hw;317 return 0;318}319 320/* close callback */321static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream)322{323 return 0;324 325}326 327static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream)328{329 struct snd_pcm_runtime *runtime = substream->runtime;330 331 dev_dbg(substream->pcm->card->dev, "Capture_open\n");332 runtime->hw = snd_aw2_capture_hw;333 return 0;334}335 336/* close callback */337static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream)338{339 /* TODO: something to do ? */340 return 0;341}342 343/* prepare callback for playback */344static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream)345{346 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);347 struct aw2 *chip = pcm_device->chip;348 struct snd_pcm_runtime *runtime = substream->runtime;349 unsigned long period_size, buffer_size;350 351 mutex_lock(&chip->mtx);352 353 period_size = snd_pcm_lib_period_bytes(substream);354 buffer_size = snd_pcm_lib_buffer_bytes(substream);355 356 snd_aw2_saa7146_pcm_init_playback(&chip->saa7146,357 pcm_device->stream_number,358 runtime->dma_addr, period_size,359 buffer_size);360 361 /* Define Interrupt callback */362 snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number,363 (snd_aw2_saa7146_it_cb)364 snd_pcm_period_elapsed,365 (void *)substream);366 367 mutex_unlock(&chip->mtx);368 369 return 0;370}371 372/* prepare callback for capture */373static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream)374{375 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);376 struct aw2 *chip = pcm_device->chip;377 struct snd_pcm_runtime *runtime = substream->runtime;378 unsigned long period_size, buffer_size;379 380 mutex_lock(&chip->mtx);381 382 period_size = snd_pcm_lib_period_bytes(substream);383 buffer_size = snd_pcm_lib_buffer_bytes(substream);384 385 snd_aw2_saa7146_pcm_init_capture(&chip->saa7146,386 pcm_device->stream_number,387 runtime->dma_addr, period_size,388 buffer_size);389 390 /* Define Interrupt callback */391 snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number,392 (snd_aw2_saa7146_it_cb)393 snd_pcm_period_elapsed,394 (void *)substream);395 396 mutex_unlock(&chip->mtx);397 398 return 0;399}400 401/* playback trigger callback */402static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,403 int cmd)404{405 int status = 0;406 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);407 struct aw2 *chip = pcm_device->chip;408 spin_lock(&chip->reg_lock);409 switch (cmd) {410 case SNDRV_PCM_TRIGGER_START:411 snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146,412 pcm_device->413 stream_number);414 break;415 case SNDRV_PCM_TRIGGER_STOP:416 snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146,417 pcm_device->418 stream_number);419 break;420 default:421 status = -EINVAL;422 }423 spin_unlock(&chip->reg_lock);424 return status;425}426 427/* capture trigger callback */428static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,429 int cmd)430{431 int status = 0;432 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);433 struct aw2 *chip = pcm_device->chip;434 spin_lock(&chip->reg_lock);435 switch (cmd) {436 case SNDRV_PCM_TRIGGER_START:437 snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146,438 pcm_device->439 stream_number);440 break;441 case SNDRV_PCM_TRIGGER_STOP:442 snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146,443 pcm_device->444 stream_number);445 break;446 default:447 status = -EINVAL;448 }449 spin_unlock(&chip->reg_lock);450 return status;451}452 453/* playback pointer callback */454static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream455 *substream)456{457 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);458 struct aw2 *chip = pcm_device->chip;459 unsigned int current_ptr;460 461 /* get the current hardware pointer */462 struct snd_pcm_runtime *runtime = substream->runtime;463 current_ptr =464 snd_aw2_saa7146_get_hw_ptr_playback(&chip->saa7146,465 pcm_device->stream_number,466 runtime->dma_area,467 runtime->buffer_size);468 469 return bytes_to_frames(substream->runtime, current_ptr);470}471 472/* capture pointer callback */473static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream474 *substream)475{476 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);477 struct aw2 *chip = pcm_device->chip;478 unsigned int current_ptr;479 480 /* get the current hardware pointer */481 struct snd_pcm_runtime *runtime = substream->runtime;482 current_ptr =483 snd_aw2_saa7146_get_hw_ptr_capture(&chip->saa7146,484 pcm_device->stream_number,485 runtime->dma_area,486 runtime->buffer_size);487 488 return bytes_to_frames(substream->runtime, current_ptr);489}490 491/* create a pcm device */492static int snd_aw2_new_pcm(struct aw2 *chip)493{494 struct snd_pcm *pcm_playback_ana;495 struct snd_pcm *pcm_playback_num;496 struct snd_pcm *pcm_capture;497 struct aw2_pcm_device *pcm_device;498 int err = 0;499 500 /* Create new Alsa PCM device */501 502 err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0,503 &pcm_playback_ana);504 if (err < 0) {505 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);506 return err;507 }508 509 /* Creation ok */510 pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA];511 512 /* Set PCM device name */513 strcpy(pcm_playback_ana->name, "Analog playback");514 /* Associate private data to PCM device */515 pcm_playback_ana->private_data = pcm_device;516 /* set operators of PCM device */517 snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK,518 &snd_aw2_playback_ops);519 /* store PCM device */520 pcm_device->pcm = pcm_playback_ana;521 /* give base chip pointer to our internal pcm device522 structure */523 pcm_device->chip = chip;524 /* Give stream number to PCM device */525 pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA;526 527 /* pre-allocation of buffers */528 /* Preallocate continuous pages. */529 snd_pcm_set_managed_buffer_all(pcm_playback_ana,530 SNDRV_DMA_TYPE_DEV,531 &chip->pci->dev,532 64 * 1024, 64 * 1024);533 534 err = snd_pcm_new(chip->card, "Audiowerk2 digital playback", 1, 1, 0,535 &pcm_playback_num);536 537 if (err < 0) {538 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);539 return err;540 }541 /* Creation ok */542 pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_DIG];543 544 /* Set PCM device name */545 strcpy(pcm_playback_num->name, "Digital playback");546 /* Associate private data to PCM device */547 pcm_playback_num->private_data = pcm_device;548 /* set operators of PCM device */549 snd_pcm_set_ops(pcm_playback_num, SNDRV_PCM_STREAM_PLAYBACK,550 &snd_aw2_playback_ops);551 /* store PCM device */552 pcm_device->pcm = pcm_playback_num;553 /* give base chip pointer to our internal pcm device554 structure */555 pcm_device->chip = chip;556 /* Give stream number to PCM device */557 pcm_device->stream_number = NUM_STREAM_PLAYBACK_DIG;558 559 /* pre-allocation of buffers */560 /* Preallocate continuous pages. */561 snd_pcm_set_managed_buffer_all(pcm_playback_num,562 SNDRV_DMA_TYPE_DEV,563 &chip->pci->dev,564 64 * 1024, 64 * 1024);565 566 err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1,567 &pcm_capture);568 569 if (err < 0) {570 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);571 return err;572 }573 574 /* Creation ok */575 pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA];576 577 /* Set PCM device name */578 strcpy(pcm_capture->name, "Capture");579 /* Associate private data to PCM device */580 pcm_capture->private_data = pcm_device;581 /* set operators of PCM device */582 snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE,583 &snd_aw2_capture_ops);584 /* store PCM device */585 pcm_device->pcm = pcm_capture;586 /* give base chip pointer to our internal pcm device587 structure */588 pcm_device->chip = chip;589 /* Give stream number to PCM device */590 pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA;591 592 /* pre-allocation of buffers */593 /* Preallocate continuous pages. */594 snd_pcm_set_managed_buffer_all(pcm_capture,595 SNDRV_DMA_TYPE_DEV,596 &chip->pci->dev,597 64 * 1024, 64 * 1024);598 599 /* Create control */600 err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip));601 if (err < 0) {602 dev_err(chip->card->dev, "snd_ctl_add error (0x%X)\n", err);603 return err;604 }605 606 return 0;607}608 609static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,610 struct snd_ctl_elem_info *uinfo)611{612 static const char * const texts[2] = {613 "Analog", "Digital"614 };615 return snd_ctl_enum_info(uinfo, 1, 2, texts);616}617 618static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,619 struct snd_ctl_elem_value620 *ucontrol)621{622 struct aw2 *chip = snd_kcontrol_chip(kcontrol);623 if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146))624 ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL;625 else626 ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG;627 return 0;628}629 630static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,631 struct snd_ctl_elem_value632 *ucontrol)633{634 struct aw2 *chip = snd_kcontrol_chip(kcontrol);635 int changed = 0;636 int is_disgital =637 snd_aw2_saa7146_is_using_digital_input(&chip->saa7146);638 639 if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL)640 && !is_disgital)641 || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG)642 && is_disgital)) {643 snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital);644 changed = 1;645 }646 return changed;647}648