| // SPDX-License-Identifier: GPL-2.0-only |
| /***************************************************************************** |
| * |
| * Copyright (C) 2008 Cedric Bregardis <cedric.bregardis@free.fr> and |
| * Jean-Christian Hassler <jhassler@free.fr> |
| * |
| * This file is part of the Audiowerk2 ALSA driver |
| * |
| *****************************************************************************/ |
| #include <linux/init.h> |
| #include <linux/pci.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/slab.h> |
| #include <linux/interrupt.h> |
| #include <linux/delay.h> |
| #include <linux/io.h> |
| #include <linux/module.h> |
| #include <sound/core.h> |
| #include <sound/initval.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/control.h> |
| |
| #include "saa7146.h" |
| #include "aw2-saa7146.h" |
| |
| MODULE_AUTHOR("Cedric Bregardis <cedric.bregardis@free.fr>, " |
| "Jean-Christian Hassler <jhassler@free.fr>"); |
| MODULE_DESCRIPTION("Emagic Audiowerk 2 sound driver"); |
| MODULE_LICENSE("GPL"); |
| |
| /********************************* |
| * DEFINES |
| ********************************/ |
| #define CTL_ROUTE_ANALOG 0 |
| #define CTL_ROUTE_DIGITAL 1 |
| |
| /********************************* |
| * TYPEDEFS |
| ********************************/ |
| /* hardware definition */ |
| static const struct snd_pcm_hardware snd_aw2_playback_hw = { |
| .info = (SNDRV_PCM_INFO_MMAP | |
| SNDRV_PCM_INFO_INTERLEAVED | |
| SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID), |
| .formats = SNDRV_PCM_FMTBIT_S16_LE, |
| .rates = SNDRV_PCM_RATE_44100, |
| .rate_min = 44100, |
| .rate_max = 44100, |
| .channels_min = 2, |
| .channels_max = 4, |
| .buffer_bytes_max = 32768, |
| .period_bytes_min = 4096, |
| .period_bytes_max = 32768, |
| .periods_min = 1, |
| .periods_max = 1024, |
| }; |
| |
| static const struct snd_pcm_hardware snd_aw2_capture_hw = { |
| .info = (SNDRV_PCM_INFO_MMAP | |
| SNDRV_PCM_INFO_INTERLEAVED | |
| SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID), |
| .formats = SNDRV_PCM_FMTBIT_S16_LE, |
| .rates = SNDRV_PCM_RATE_44100, |
| .rate_min = 44100, |
| .rate_max = 44100, |
| .channels_min = 2, |
| .channels_max = 2, |
| .buffer_bytes_max = 32768, |
| .period_bytes_min = 4096, |
| .period_bytes_max = 32768, |
| .periods_min = 1, |
| .periods_max = 1024, |
| }; |
| |
| struct aw2_pcm_device { |
| struct snd_pcm *pcm; |
| unsigned int stream_number; |
| struct aw2 *chip; |
| }; |
| |
| struct aw2 { |
| struct snd_aw2_saa7146 saa7146; |
| |
| struct pci_dev *pci; |
| int irq; |
| spinlock_t reg_lock; |
| struct mutex mtx; |
| |
| unsigned long iobase_phys; |
| void __iomem *iobase_virt; |
| |
| struct snd_card *card; |
| |
| struct aw2_pcm_device device_playback[NB_STREAM_PLAYBACK]; |
| struct aw2_pcm_device device_capture[NB_STREAM_CAPTURE]; |
| }; |
| |
| /********************************* |
| * FUNCTION DECLARATIONS |
| ********************************/ |
| static int snd_aw2_dev_free(struct snd_device *device); |
| static int snd_aw2_create(struct snd_card *card, |
| struct pci_dev *pci, struct aw2 **rchip); |
| static int snd_aw2_probe(struct pci_dev *pci, |
| const struct pci_device_id *pci_id); |
| static void snd_aw2_remove(struct pci_dev *pci); |
| static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream); |
| static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream); |
| static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream); |
| static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream); |
| static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream); |
| static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream); |
| static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream, |
| int cmd); |
| static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream, |
| int cmd); |
| static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream |
| *substream); |
| static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream |
| *substream); |
| static int snd_aw2_new_pcm(struct aw2 *chip); |
| |
| static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo); |
| static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value |
| *ucontrol); |
| static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value |
| *ucontrol); |
| |
| /********************************* |
| * VARIABLES |
| ********************************/ |
| static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; |
| static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; |
| static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; |
| |
| module_param_array(index, int, NULL, 0444); |
| MODULE_PARM_DESC(index, "Index value for Audiowerk2 soundcard."); |
| module_param_array(id, charp, NULL, 0444); |
| MODULE_PARM_DESC(id, "ID string for the Audiowerk2 soundcard."); |
| module_param_array(enable, bool, NULL, 0444); |
| MODULE_PARM_DESC(enable, "Enable Audiowerk2 soundcard."); |
| |
| static const struct pci_device_id snd_aw2_ids[] = { |
| {PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146, 0, 0, |
| 0, 0, 0}, |
| {0} |
| }; |
| |
| MODULE_DEVICE_TABLE(pci, snd_aw2_ids); |
| |
| /* pci_driver definition */ |
| static struct pci_driver aw2_driver = { |
| .name = KBUILD_MODNAME, |
| .id_table = snd_aw2_ids, |
| .probe = snd_aw2_probe, |
| .remove = snd_aw2_remove, |
| }; |
| |
| module_pci_driver(aw2_driver); |
| |
| /* operators for playback PCM alsa interface */ |
| static const struct snd_pcm_ops snd_aw2_playback_ops = { |
| .open = snd_aw2_pcm_playback_open, |
| .close = snd_aw2_pcm_playback_close, |
| .prepare = snd_aw2_pcm_prepare_playback, |
| .trigger = snd_aw2_pcm_trigger_playback, |
| .pointer = snd_aw2_pcm_pointer_playback, |
| }; |
| |
| /* operators for capture PCM alsa interface */ |
| static const struct snd_pcm_ops snd_aw2_capture_ops = { |
| .open = snd_aw2_pcm_capture_open, |
| .close = snd_aw2_pcm_capture_close, |
| .prepare = snd_aw2_pcm_prepare_capture, |
| .trigger = snd_aw2_pcm_trigger_capture, |
| .pointer = snd_aw2_pcm_pointer_capture, |
| }; |
| |
| static const struct snd_kcontrol_new aw2_control = { |
| .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
| .name = "PCM Capture Route", |
| .index = 0, |
| .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, |
| .private_value = 0xffff, |
| .info = snd_aw2_control_switch_capture_info, |
| .get = snd_aw2_control_switch_capture_get, |
| .put = snd_aw2_control_switch_capture_put |
| }; |
| |
| /********************************* |
| * FUNCTION IMPLEMENTATIONS |
| ********************************/ |
| |
| /* component-destructor */ |
| static int snd_aw2_dev_free(struct snd_device *device) |
| { |
| struct aw2 *chip = device->device_data; |
| |
| /* Free hardware */ |
| snd_aw2_saa7146_free(&chip->saa7146); |
| |
| /* release the irq */ |
| if (chip->irq >= 0) |
| free_irq(chip->irq, (void *)chip); |
| /* release the i/o ports & memory */ |
| iounmap(chip->iobase_virt); |
| pci_release_regions(chip->pci); |
| /* disable the PCI entry */ |
| pci_disable_device(chip->pci); |
| /* release the data */ |
| kfree(chip); |
| |
| return 0; |
| } |
| |
| /* chip-specific constructor */ |
| static int snd_aw2_create(struct snd_card *card, |
| struct pci_dev *pci, struct aw2 **rchip) |
| { |
| struct aw2 *chip; |
| int err; |
| static const struct snd_device_ops ops = { |
| .dev_free = snd_aw2_dev_free, |
| }; |
| |
| *rchip = NULL; |
| |
| /* initialize the PCI entry */ |
| err = pci_enable_device(pci); |
| if (err < 0) |
| return err; |
| pci_set_master(pci); |
| |
| /* check PCI availability (32bit DMA) */ |
| if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(32))) { |
| dev_err(card->dev, "Impossible to set 32bit mask DMA\n"); |
| pci_disable_device(pci); |
| return -ENXIO; |
| } |
| chip = kzalloc(sizeof(*chip), GFP_KERNEL); |
| if (chip == NULL) { |
| pci_disable_device(pci); |
| return -ENOMEM; |
| } |
| |
| /* initialize the stuff */ |
| chip->card = card; |
| chip->pci = pci; |
| chip->irq = -1; |
| |
| /* (1) PCI resource allocation */ |
| err = pci_request_regions(pci, "Audiowerk2"); |
| if (err < 0) { |
| pci_disable_device(pci); |
| kfree(chip); |
| return err; |
| } |
| chip->iobase_phys = pci_resource_start(pci, 0); |
| chip->iobase_virt = |
| ioremap(chip->iobase_phys, |
| pci_resource_len(pci, 0)); |
| |
| if (chip->iobase_virt == NULL) { |
| dev_err(card->dev, "unable to remap memory region"); |
| pci_release_regions(pci); |
| pci_disable_device(pci); |
| kfree(chip); |
| return -ENOMEM; |
| } |
| |
| /* (2) initialization of the chip hardware */ |
| snd_aw2_saa7146_setup(&chip->saa7146, chip->iobase_virt); |
| |
| if (request_irq(pci->irq, snd_aw2_saa7146_interrupt, |
| IRQF_SHARED, KBUILD_MODNAME, chip)) { |
| dev_err(card->dev, "Cannot grab irq %d\n", pci->irq); |
| |
| iounmap(chip->iobase_virt); |
| pci_release_regions(chip->pci); |
| pci_disable_device(chip->pci); |
| kfree(chip); |
| return -EBUSY; |
| } |
| chip->irq = pci->irq; |
| card->sync_irq = chip->irq; |
| |
| err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); |
| if (err < 0) { |
| free_irq(chip->irq, (void *)chip); |
| iounmap(chip->iobase_virt); |
| pci_release_regions(chip->pci); |
| pci_disable_device(chip->pci); |
| kfree(chip); |
| return err; |
| } |
| |
| *rchip = chip; |
| |
| dev_info(card->dev, |
| "Audiowerk 2 sound card (saa7146 chipset) detected and managed\n"); |
| return 0; |
| } |
| |
| /* constructor */ |
| static int snd_aw2_probe(struct pci_dev *pci, |
| const struct pci_device_id *pci_id) |
| { |
| static int dev; |
| struct snd_card *card; |
| struct aw2 *chip; |
| int err; |
| |
| /* (1) Continue if device is not enabled, else inc dev */ |
| if (dev >= SNDRV_CARDS) |
| return -ENODEV; |
| if (!enable[dev]) { |
| dev++; |
| return -ENOENT; |
| } |
| |
| /* (2) Create card instance */ |
| err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE, |
| 0, &card); |
| if (err < 0) |
| return err; |
| |
| /* (3) Create main component */ |
| err = snd_aw2_create(card, pci, &chip); |
| if (err < 0) { |
| snd_card_free(card); |
| return err; |
| } |
| |
| /* initialize mutex */ |
| mutex_init(&chip->mtx); |
| /* init spinlock */ |
| spin_lock_init(&chip->reg_lock); |
| /* (4) Define driver ID and name string */ |
| strcpy(card->driver, "aw2"); |
| strcpy(card->shortname, "Audiowerk2"); |
| |
| sprintf(card->longname, "%s with SAA7146 irq %i", |
| card->shortname, chip->irq); |
| |
| /* (5) Create other components */ |
| snd_aw2_new_pcm(chip); |
| |
| /* (6) Register card instance */ |
| err = snd_card_register(card); |
| if (err < 0) { |
| snd_card_free(card); |
| return err; |
| } |
| |
| /* (7) Set PCI driver data */ |
| pci_set_drvdata(pci, card); |
| |
| dev++; |
| return 0; |
| } |
| |
| /* destructor */ |
| static void snd_aw2_remove(struct pci_dev *pci) |
| { |
| snd_card_free(pci_get_drvdata(pci)); |
| } |
| |
| /* open callback */ |
| static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream) |
| { |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| |
| dev_dbg(substream->pcm->card->dev, "Playback_open\n"); |
| runtime->hw = snd_aw2_playback_hw; |
| return 0; |
| } |
| |
| /* close callback */ |
| static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream) |
| { |
| return 0; |
| |
| } |
| |
| static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream) |
| { |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| |
| dev_dbg(substream->pcm->card->dev, "Capture_open\n"); |
| runtime->hw = snd_aw2_capture_hw; |
| return 0; |
| } |
| |
| /* close callback */ |
| static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream) |
| { |
| /* TODO: something to do ? */ |
| return 0; |
| } |
| |
| /* prepare callback for playback */ |
| static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream) |
| { |
| struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream); |
| struct aw2 *chip = pcm_device->chip; |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| unsigned long period_size, buffer_size; |
| |
| mutex_lock(&chip->mtx); |
| |
| period_size = snd_pcm_lib_period_bytes(substream); |
| buffer_size = snd_pcm_lib_buffer_bytes(substream); |
| |
| snd_aw2_saa7146_pcm_init_playback(&chip->saa7146, |
| pcm_device->stream_number, |
| runtime->dma_addr, period_size, |
| buffer_size); |
| |
| /* Define Interrupt callback */ |
| snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number, |
| (snd_aw2_saa7146_it_cb) |
| snd_pcm_period_elapsed, |
| (void *)substream); |
| |
| mutex_unlock(&chip->mtx); |
| |
| return 0; |
| } |
| |
| /* prepare callback for capture */ |
| static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream) |
| { |
| struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream); |
| struct aw2 *chip = pcm_device->chip; |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| unsigned long period_size, buffer_size; |
| |
| mutex_lock(&chip->mtx); |
| |
| period_size = snd_pcm_lib_period_bytes(substream); |
| buffer_size = snd_pcm_lib_buffer_bytes(substream); |
| |
| snd_aw2_saa7146_pcm_init_capture(&chip->saa7146, |
| pcm_device->stream_number, |
| runtime->dma_addr, period_size, |
| buffer_size); |
| |
| /* Define Interrupt callback */ |
| snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number, |
| (snd_aw2_saa7146_it_cb) |
| snd_pcm_period_elapsed, |
| (void *)substream); |
| |
| mutex_unlock(&chip->mtx); |
| |
| return 0; |
| } |
| |
| /* playback trigger callback */ |
| static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream, |
| int cmd) |
| { |
| int status = 0; |
| struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream); |
| struct aw2 *chip = pcm_device->chip; |
| spin_lock(&chip->reg_lock); |
| switch (cmd) { |
| case SNDRV_PCM_TRIGGER_START: |
| snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146, |
| pcm_device-> |
| stream_number); |
| break; |
| case SNDRV_PCM_TRIGGER_STOP: |
| snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146, |
| pcm_device-> |
| stream_number); |
| break; |
| default: |
| status = -EINVAL; |
| } |
| spin_unlock(&chip->reg_lock); |
| return status; |
| } |
| |
| /* capture trigger callback */ |
| static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream, |
| int cmd) |
| { |
| int status = 0; |
| struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream); |
| struct aw2 *chip = pcm_device->chip; |
| spin_lock(&chip->reg_lock); |
| switch (cmd) { |
| case SNDRV_PCM_TRIGGER_START: |
| snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146, |
| pcm_device-> |
| stream_number); |
| break; |
| case SNDRV_PCM_TRIGGER_STOP: |
| snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146, |
| pcm_device-> |
| stream_number); |
| break; |
| default: |
| status = -EINVAL; |
| } |
| spin_unlock(&chip->reg_lock); |
| return status; |
| } |
| |
| /* playback pointer callback */ |
| static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream |
| *substream) |
| { |
| struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream); |
| struct aw2 *chip = pcm_device->chip; |
| unsigned int current_ptr; |
| |
| /* get the current hardware pointer */ |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| current_ptr = |
| snd_aw2_saa7146_get_hw_ptr_playback(&chip->saa7146, |
| pcm_device->stream_number, |
| runtime->dma_area, |
| runtime->buffer_size); |
| |
| return bytes_to_frames(substream->runtime, current_ptr); |
| } |
| |
| /* capture pointer callback */ |
| static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream |
| *substream) |
| { |
| struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream); |
| struct aw2 *chip = pcm_device->chip; |
| unsigned int current_ptr; |
| |
| /* get the current hardware pointer */ |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| current_ptr = |
| snd_aw2_saa7146_get_hw_ptr_capture(&chip->saa7146, |
| pcm_device->stream_number, |
| runtime->dma_area, |
| runtime->buffer_size); |
| |
| return bytes_to_frames(substream->runtime, current_ptr); |
| } |
| |
| /* create a pcm device */ |
| static int snd_aw2_new_pcm(struct aw2 *chip) |
| { |
| struct snd_pcm *pcm_playback_ana; |
| struct snd_pcm *pcm_playback_num; |
| struct snd_pcm *pcm_capture; |
| struct aw2_pcm_device *pcm_device; |
| int err = 0; |
| |
| /* Create new Alsa PCM device */ |
| |
| err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0, |
| &pcm_playback_ana); |
| if (err < 0) { |
| dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err); |
| return err; |
| } |
| |
| /* Creation ok */ |
| pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA]; |
| |
| /* Set PCM device name */ |
| strcpy(pcm_playback_ana->name, "Analog playback"); |
| /* Associate private data to PCM device */ |
| pcm_playback_ana->private_data = pcm_device; |
| /* set operators of PCM device */ |
| snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK, |
| &snd_aw2_playback_ops); |
| /* store PCM device */ |
| pcm_device->pcm = pcm_playback_ana; |
| /* give base chip pointer to our internal pcm device |
| structure */ |
| pcm_device->chip = chip; |
| /* Give stream number to PCM device */ |
| pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA; |
| |
| /* pre-allocation of buffers */ |
| /* Preallocate continuous pages. */ |
| snd_pcm_set_managed_buffer_all(pcm_playback_ana, |
| SNDRV_DMA_TYPE_DEV, |
| &chip->pci->dev, |
| 64 * 1024, 64 * 1024); |
| |
| err = snd_pcm_new(chip->card, "Audiowerk2 digital playback", 1, 1, 0, |
| &pcm_playback_num); |
| |
| if (err < 0) { |
| dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err); |
| return err; |
| } |
| /* Creation ok */ |
| pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_DIG]; |
| |
| /* Set PCM device name */ |
| strcpy(pcm_playback_num->name, "Digital playback"); |
| /* Associate private data to PCM device */ |
| pcm_playback_num->private_data = pcm_device; |
| /* set operators of PCM device */ |
| snd_pcm_set_ops(pcm_playback_num, SNDRV_PCM_STREAM_PLAYBACK, |
| &snd_aw2_playback_ops); |
| /* store PCM device */ |
| pcm_device->pcm = pcm_playback_num; |
| /* give base chip pointer to our internal pcm device |
| structure */ |
| pcm_device->chip = chip; |
| /* Give stream number to PCM device */ |
| pcm_device->stream_number = NUM_STREAM_PLAYBACK_DIG; |
| |
| /* pre-allocation of buffers */ |
| /* Preallocate continuous pages. */ |
| snd_pcm_set_managed_buffer_all(pcm_playback_num, |
| SNDRV_DMA_TYPE_DEV, |
| &chip->pci->dev, |
| 64 * 1024, 64 * 1024); |
| |
| err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1, |
| &pcm_capture); |
| |
| if (err < 0) { |
| dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err); |
| return err; |
| } |
| |
| /* Creation ok */ |
| pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA]; |
| |
| /* Set PCM device name */ |
| strcpy(pcm_capture->name, "Capture"); |
| /* Associate private data to PCM device */ |
| pcm_capture->private_data = pcm_device; |
| /* set operators of PCM device */ |
| snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE, |
| &snd_aw2_capture_ops); |
| /* store PCM device */ |
| pcm_device->pcm = pcm_capture; |
| /* give base chip pointer to our internal pcm device |
| structure */ |
| pcm_device->chip = chip; |
| /* Give stream number to PCM device */ |
| pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA; |
| |
| /* pre-allocation of buffers */ |
| /* Preallocate continuous pages. */ |
| snd_pcm_set_managed_buffer_all(pcm_capture, |
| SNDRV_DMA_TYPE_DEV, |
| &chip->pci->dev, |
| 64 * 1024, 64 * 1024); |
| |
| /* Create control */ |
| err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip)); |
| if (err < 0) { |
| dev_err(chip->card->dev, "snd_ctl_add error (0x%X)\n", err); |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| static const char * const texts[2] = { |
| "Analog", "Digital" |
| }; |
| return snd_ctl_enum_info(uinfo, 1, 2, texts); |
| } |
| |
| static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value |
| *ucontrol) |
| { |
| struct aw2 *chip = snd_kcontrol_chip(kcontrol); |
| if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146)) |
| ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL; |
| else |
| ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG; |
| return 0; |
| } |
| |
| static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value |
| *ucontrol) |
| { |
| struct aw2 *chip = snd_kcontrol_chip(kcontrol); |
| int changed = 0; |
| int is_disgital = |
| snd_aw2_saa7146_is_using_digital_input(&chip->saa7146); |
| |
| if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL) |
| && !is_disgital) |
| || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG) |
| && is_disgital)) { |
| snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital); |
| changed = 1; |
| } |
| return changed; |
| } |