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-rw-r--r--sound/pci/aw2/aw2-alsa.c710
1 files changed, 710 insertions, 0 deletions
diff --git a/sound/pci/aw2/aw2-alsa.c b/sound/pci/aw2/aw2-alsa.c
new file mode 100644
index 000000000..f1865afed
--- /dev/null
+++ b/sound/pci/aw2/aw2-alsa.c
@@ -0,0 +1,710 @@
+// 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(&pci->dev, DMA_BIT_MASK(32)) < 0) ||
+ (dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(32)) < 0)) {
+ 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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-01 22:41:35 +0000