static int tegra20_spdif_platform_remove(struct platform_device *pdev)
{
pm_runtime_disable(&pdev->dev);
if (!pm_runtime_status_suspended(&pdev->dev))
tegra20_spdif_runtime_suspend(&pdev->dev);
tegra_pcm_platform_unregister(&pdev->dev);
snd_soc_unregister_component(&pdev->dev);
return 0;
}
static int tegra20_spdif_platform_remove(struct platform_device *pdev)
{
struct tegra20_spdif *spdif = dev_get_drvdata(&pdev->dev);
pm_runtime_disable(&pdev->dev);
if (!pm_runtime_status_suspended(&pdev->dev))
tegra20_spdif_runtime_suspend(&pdev->dev);
tegra_pcm_platform_unregister(&pdev->dev);
snd_soc_unregister_dai(&pdev->dev);
clk_put(spdif->clk_spdif_out);
return 0;
}
static int tegra20_spdif_platform_probe(struct platform_device *pdev)
{
struct tegra20_spdif *spdif;
struct resource *mem, *memregion, *dmareq;
void __iomem *regs;
int ret;
u32 reg_val;
spdif = devm_kzalloc(&pdev->dev, sizeof(struct tegra20_spdif),
GFP_KERNEL);
if (!spdif) {
dev_err(&pdev->dev, "Can't allocate tegra20_spdif\n");
ret = -ENOMEM;
goto err;
}
dev_set_drvdata(&pdev->dev, spdif);
spdif->clk_spdif_out = clk_get(&pdev->dev, "spdif_out");
if (IS_ERR(spdif->clk_spdif_out)) {
pr_err("Can't retrieve spdif clock\n");
ret = PTR_ERR(spdif->clk_spdif_out);
goto err;
}
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!mem) {
dev_err(&pdev->dev, "No memory resource\n");
ret = -ENODEV;
goto err_clk_put;
}
dmareq = platform_get_resource(pdev, IORESOURCE_DMA, 0);
if (!dmareq) {
dev_err(&pdev->dev, "No DMA resource\n");
ret = -ENODEV;
goto err_clk_put;
}
memregion = devm_request_mem_region(&pdev->dev, mem->start,
resource_size(mem), DRV_NAME);
if (!memregion) {
dev_err(&pdev->dev, "Memory region already claimed\n");
ret = -EBUSY;
goto err_clk_put;
}
regs = devm_ioremap(&pdev->dev, mem->start, resource_size(mem));
if (!regs) {
dev_err(&pdev->dev, "ioremap failed\n");
ret = -ENOMEM;
goto err_clk_put;
}
spdif->regmap = devm_regmap_init_mmio(&pdev->dev, regs,
&tegra20_spdif_regmap_config);
if (IS_ERR(spdif->regmap)) {
dev_err(&pdev->dev, "regmap init failed\n");
ret = PTR_ERR(spdif->regmap);
goto err_clk_put;
}
spdif->playback_dma_data.addr = mem->start + TEGRA20_SPDIF_DATA_OUT;
spdif->playback_dma_data.wrap = 4;
spdif->playback_dma_data.width = 32;
spdif->playback_dma_data.req_sel = dmareq->start;
pm_runtime_enable(&pdev->dev);
if (!pm_runtime_enabled(&pdev->dev)) {
ret = tegra20_spdif_runtime_resume(&pdev->dev);
if (ret)
goto err_pm_disable;
}
clk_enable(spdif->clk_spdif_out);
reg_val = tegra20_spdif_read(spdif, TEGRA20_SPDIF_DATA_FIFO_CSR);
reg_val &= ~TEGRA20_SPDIF_DATA_FIFO_CSR_TX_ATN_LVL_MASK;
reg_val |= TEGRA20_SPDIF_DATA_FIFO_CSR_TX_ATN_LVL_TU4_WORD_FULL;
tegra20_spdif_write(spdif, TEGRA20_SPDIF_DATA_FIFO_CSR, reg_val);
clk_disable(spdif->clk_spdif_out);
ret = snd_soc_register_dai(&pdev->dev, &tegra20_spdif_dai);
if (ret) {
dev_err(&pdev->dev, "Could not register DAI: %d\n", ret);
ret = -ENOMEM;
goto err_suspend;
}
ret = tegra_pcm_platform_register(&pdev->dev);
if (ret) {
dev_err(&pdev->dev, "Could not register PCM: %d\n", ret);
goto err_unregister_dai;
}
return 0;
err_unregister_dai:
snd_soc_unregister_dai(&pdev->dev);
err_suspend:
if (!pm_runtime_status_suspended(&pdev->dev))
tegra20_spdif_runtime_suspend(&pdev->dev);
err_pm_disable:
pm_runtime_disable(&pdev->dev);
err_clk_put:
clk_put(spdif->clk_spdif_out);
err:
return ret;
}
static int tegra20_spdif_platform_probe(struct platform_device *pdev)
{
struct tegra20_spdif *spdif;
struct resource *mem, *memregion, *dmareq;
void __iomem *regs;
int ret;
spdif = devm_kzalloc(&pdev->dev, sizeof(struct tegra20_spdif),
GFP_KERNEL);
if (!spdif) {
dev_err(&pdev->dev, "Can't allocate tegra20_spdif\n");
ret = -ENOMEM;
goto err;
}
dev_set_drvdata(&pdev->dev, spdif);
spdif->clk_spdif_out = clk_get(&pdev->dev, "spdif_out");
if (IS_ERR(spdif->clk_spdif_out)) {
pr_err("Can't retrieve spdif clock\n");
ret = PTR_ERR(spdif->clk_spdif_out);
goto err;
}
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!mem) {
dev_err(&pdev->dev, "No memory resource\n");
ret = -ENODEV;
goto err_clk_put;
}
dmareq = platform_get_resource(pdev, IORESOURCE_DMA, 0);
if (!dmareq) {
dev_err(&pdev->dev, "No DMA resource\n");
ret = -ENODEV;
goto err_clk_put;
}
memregion = devm_request_mem_region(&pdev->dev, mem->start,
resource_size(mem), DRV_NAME);
if (!memregion) {
dev_err(&pdev->dev, "Memory region already claimed\n");
ret = -EBUSY;
goto err_clk_put;
}
regs = devm_ioremap(&pdev->dev, mem->start, resource_size(mem));
if (!regs) {
dev_err(&pdev->dev, "ioremap failed\n");
ret = -ENOMEM;
goto err_clk_put;
}
spdif->regmap = devm_regmap_init_mmio(&pdev->dev, regs,
&tegra20_spdif_regmap_config);
if (IS_ERR(spdif->regmap)) {
dev_err(&pdev->dev, "regmap init failed\n");
ret = PTR_ERR(spdif->regmap);
goto err_clk_put;
}
spdif->playback_dma_data.addr = mem->start + TEGRA20_SPDIF_DATA_OUT;
spdif->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
spdif->playback_dma_data.maxburst = 4;
spdif->playback_dma_data.slave_id = dmareq->start;
pm_runtime_enable(&pdev->dev);
if (!pm_runtime_enabled(&pdev->dev)) {
ret = tegra20_spdif_runtime_resume(&pdev->dev);
if (ret)
goto err_pm_disable;
}
ret = snd_soc_register_component(&pdev->dev, &tegra20_spdif_component,
&tegra20_spdif_dai, 1);
if (ret) {
dev_err(&pdev->dev, "Could not register DAI: %d\n", ret);
ret = -ENOMEM;
goto err_suspend;
}
ret = tegra_pcm_platform_register(&pdev->dev);
if (ret) {
dev_err(&pdev->dev, "Could not register PCM: %d\n", ret);
goto err_unregister_component;
}
return 0;
err_unregister_component:
snd_soc_unregister_component(&pdev->dev);
err_suspend:
if (!pm_runtime_status_suspended(&pdev->dev))
tegra20_spdif_runtime_suspend(&pdev->dev);
err_pm_disable:
pm_runtime_disable(&pdev->dev);
err_clk_put:
clk_put(spdif->clk_spdif_out);
err:
return ret;
}