diff options
| author | Stephen Warren <swarren@nvidia.com> | 2013-11-12 02:21:01 +0400 |
|---|---|---|
| committer | Stephen Warren <swarren@nvidia.com> | 2013-12-12 03:43:57 +0400 |
| commit | 5608bd3ed23e62bba96cc019030c742c78981b59 (patch) | |
| tree | f441a68e603aea1baa49abedf19059fa167fdbde /sound/soc/tegra/tegra20_i2s.c | |
| parent | d59afb6a961519d81557f6b13d04ec1498c074fe (diff) | |
| download | linux-5608bd3ed23e62bba96cc019030c742c78981b59.tar.xz | |
ASoC: tegra: convert to standard DMA DT bindings
By passing no flags when calling snd_dmaengine_pcm_register() from
tegra_pcm.c, we end up using dma_request_slave_channel() rather than
dmaengine_pcm_compat_request_channel(), and hence rely on the standard
DMA DT bindings and stashing the DMA slave ID away during channel
allocation. This means there's no need to use a custom DT property to
store the slave ID. So, remove all the code that parsed it.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound/soc/tegra/tegra20_i2s.c')
| -rw-r--r-- | sound/soc/tegra/tegra20_i2s.c | 20 |
1 files changed, 1 insertions, 19 deletions
diff --git a/sound/soc/tegra/tegra20_i2s.c b/sound/soc/tegra/tegra20_i2s.c index 364bf6a907e1..1dc869c475e7 100644 --- a/sound/soc/tegra/tegra20_i2s.c +++ b/sound/soc/tegra/tegra20_i2s.c @@ -339,9 +339,7 @@ static const struct regmap_config tegra20_i2s_regmap_config = { static int tegra20_i2s_platform_probe(struct platform_device *pdev) { struct tegra20_i2s *i2s; - struct resource *mem, *memregion, *dmareq; - u32 of_dma[2]; - u32 dma_ch; + struct resource *mem, *memregion; void __iomem *regs; int ret; @@ -370,20 +368,6 @@ static int tegra20_i2s_platform_probe(struct platform_device *pdev) goto err_clk_put; } - dmareq = platform_get_resource(pdev, IORESOURCE_DMA, 0); - if (!dmareq) { - if (of_property_read_u32_array(pdev->dev.of_node, - "nvidia,dma-request-selector", - of_dma, 2) < 0) { - dev_err(&pdev->dev, "No DMA resource\n"); - ret = -ENODEV; - goto err_clk_put; - } - dma_ch = of_dma[1]; - } else { - dma_ch = dmareq->start; - } - memregion = devm_request_mem_region(&pdev->dev, mem->start, resource_size(mem), DRV_NAME); if (!memregion) { @@ -410,12 +394,10 @@ static int tegra20_i2s_platform_probe(struct platform_device *pdev) i2s->capture_dma_data.addr = mem->start + TEGRA20_I2S_FIFO2; i2s->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; i2s->capture_dma_data.maxburst = 4; - i2s->capture_dma_data.slave_id = dma_ch; i2s->playback_dma_data.addr = mem->start + TEGRA20_I2S_FIFO1; i2s->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; i2s->playback_dma_data.maxburst = 4; - i2s->playback_dma_data.slave_id = dma_ch; pm_runtime_enable(&pdev->dev); if (!pm_runtime_enabled(&pdev->dev)) { |