static int hda_tegra_first_init(struct azx *chip, struct platform_device *pdev)
{
struct hdac_bus *bus = azx_bus(chip);
struct snd_card *card = chip->card;
int err;
unsigned short gcap;
int irq_id = platform_get_irq(pdev, 0);
const char *sname, *drv_name = "tegra-hda";
struct device_node *np = pdev->dev.of_node;
err = hda_tegra_init_chip(chip, pdev);
if (err)
return err;
err = devm_request_irq(chip->card->dev, irq_id, azx_interrupt,
IRQF_SHARED, KBUILD_MODNAME, chip);
if (err) {
dev_err(chip->card->dev,
"unable to request IRQ %d, disabling device\n",
irq_id);
return err;
}
bus->irq = irq_id;
synchronize_irq(bus->irq);
gcap = azx_readw(chip, GCAP);
dev_dbg(card->dev, "chipset global capabilities = 0x%x\n", gcap);
/* read number of streams from GCAP register instead of using
* hardcoded value
*/
chip->capture_streams = (gcap >> 8) & 0x0f;
chip->playback_streams = (gcap >> 12) & 0x0f;
if (!chip->playback_streams && !chip->capture_streams) {
/* gcap didn't give any info, switching to old method */
chip->playback_streams = NUM_PLAYBACK_SD;
chip->capture_streams = NUM_CAPTURE_SD;
}
chip->capture_index_offset = 0;
chip->playback_index_offset = chip->capture_streams;
chip->num_streams = chip->playback_streams + chip->capture_streams;
/* initialize streams */
err = azx_init_streams(chip);
if (err < 0) {
dev_err(card->dev, "failed to initialize streams: %d\n", err);
return err;
}
err = azx_alloc_stream_pages(chip);
if (err < 0) {
dev_err(card->dev, "failed to allocate stream pages: %d\n",
err);
return err;
}
/* initialize chip */
azx_init_chip(chip, 1);
/* codec detection */
if (!bus->codec_mask) {
dev_err(card->dev, "no codecs found!\n");
return -ENODEV;
}
/* driver name */
strncpy(card->driver, drv_name, sizeof(card->driver));
/* shortname for card */
sname = of_get_property(np, "nvidia,model", NULL);
if (!sname)
sname = drv_name;
if (strlen(sname) > sizeof(card->shortname))
dev_info(card->dev, "truncating shortname for card\n");
strncpy(card->shortname, sname, sizeof(card->shortname));
/* longname for card */
snprintf(card->longname, sizeof(card->longname),
"%s at 0x%lx irq %i",
card->shortname, bus->addr, bus->irq);
return 0;
}
static int hda_tegra_first_init(struct azx *chip, struct platform_device *pdev)
{
struct snd_card *card = chip->card;
int err;
unsigned short gcap;
int irq_id = platform_get_irq(pdev, 0);
err = hda_tegra_init_chip(chip, pdev);
if (err)
return err;
err = devm_request_irq(chip->card->dev, irq_id, azx_interrupt,
IRQF_SHARED, KBUILD_MODNAME, chip);
if (err) {
dev_err(chip->card->dev,
"unable to request IRQ %d, disabling device\n",
irq_id);
return err;
}
chip->irq = irq_id;
synchronize_irq(chip->irq);
gcap = azx_readw(chip, GCAP);
dev_dbg(card->dev, "chipset global capabilities = 0x%x\n", gcap);
/* read number of streams from GCAP register instead of using
* hardcoded value
*/
chip->capture_streams = (gcap >> 8) & 0x0f;
chip->playback_streams = (gcap >> 12) & 0x0f;
if (!chip->playback_streams && !chip->capture_streams) {
/* gcap didn't give any info, switching to old method */
chip->playback_streams = NUM_PLAYBACK_SD;
chip->capture_streams = NUM_CAPTURE_SD;
}
chip->capture_index_offset = 0;
chip->playback_index_offset = chip->capture_streams;
chip->num_streams = chip->playback_streams + chip->capture_streams;
chip->azx_dev = devm_kcalloc(card->dev, chip->num_streams,
sizeof(*chip->azx_dev), GFP_KERNEL);
if (!chip->azx_dev)
return -ENOMEM;
err = azx_alloc_stream_pages(chip);
if (err < 0)
return err;
/* initialize streams */
azx_init_stream(chip);
/* initialize chip */
azx_init_chip(chip, 1);
/* codec detection */
if (!chip->codec_mask) {
dev_err(card->dev, "no codecs found!\n");
return -ENODEV;
}
strcpy(card->driver, "tegra-hda");
strcpy(card->shortname, "tegra-hda");
snprintf(card->longname, sizeof(card->longname),
"%s at 0x%lx irq %i",
card->shortname, chip->addr, chip->irq);
return 0;
}