/*
* destructor
*/
static int hda_tegra_dev_free(struct snd_device *device)
{
struct azx *chip = device->device_data;
struct hda_tegra *hda = container_of(chip, struct hda_tegra, chip);
cancel_work_sync(&hda->probe_work);
if (azx_bus(chip)->chip_init) {
azx_stop_all_streams(chip);
azx_stop_chip(chip);
}
azx_free_stream_pages(chip);
azx_free_streams(chip);
snd_hdac_bus_exit(azx_bus(chip));
return 0;
}
static int __maybe_unused hda_tegra_runtime_suspend(struct device *dev)
{
struct snd_card *card = dev_get_drvdata(dev);
struct azx *chip = card->private_data;
struct hda_tegra *hda = container_of(chip, struct hda_tegra, chip);
struct hdac_bus *bus = azx_bus(chip);
if (chip && chip->running) {
azx_stop_chip(chip);
synchronize_irq(bus->irq);
azx_enter_link_reset(chip);
}
hda_tegra_disable_clocks(hda);
return 0;
}
static int hda_tegra_init_chip(struct azx *chip, struct platform_device *pdev)
{
struct hda_tegra *hda = container_of(chip, struct hda_tegra, chip);
struct hdac_bus *bus = azx_bus(chip);
struct device *dev = hda->dev;
struct resource *res;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
hda->regs = devm_ioremap_resource(dev, res);
if (IS_ERR(hda->regs))
return PTR_ERR(hda->regs);
bus->remap_addr = hda->regs + HDA_BAR0;
bus->addr = res->start + HDA_BAR0;
hda_tegra_init(hda);
return 0;
}
static int hda_tegra_init_chip(struct azx *chip, struct platform_device *pdev)
{
struct hda_tegra *hda = container_of(chip, struct hda_tegra, chip);
struct hdac_bus *bus = azx_bus(chip);
struct device *dev = hda->dev;
struct resource *res;
int err;
hda->hda_clk = devm_clk_get(dev, "hda");
if (IS_ERR(hda->hda_clk)) {
dev_err(dev, "failed to get hda clock\n");
return PTR_ERR(hda->hda_clk);
}
hda->hda2codec_2x_clk = devm_clk_get(dev, "hda2codec_2x");
if (IS_ERR(hda->hda2codec_2x_clk)) {
dev_err(dev, "failed to get hda2codec_2x clock\n");
return PTR_ERR(hda->hda2codec_2x_clk);
}
hda->hda2hdmi_clk = devm_clk_get(dev, "hda2hdmi");
if (IS_ERR(hda->hda2hdmi_clk)) {
dev_err(dev, "failed to get hda2hdmi clock\n");
return PTR_ERR(hda->hda2hdmi_clk);
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
hda->regs = devm_ioremap_resource(dev, res);
if (IS_ERR(hda->regs))
return PTR_ERR(hda->regs);
bus->remap_addr = hda->regs + HDA_BAR0;
bus->addr = res->start + HDA_BAR0;
err = hda_tegra_enable_clocks(hda);
if (err) {
dev_err(dev, "failed to get enable clocks\n");
return err;
}
hda_tegra_init(hda);
return 0;
}
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;
}