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>

1 files changed, 14 insertions, 3 deletions

diff --git a/sound/soc/tegra/tegra_pcm.c b/sound/soc/tegra/tegra_pcm.c
index 7b2d23ba69b3..7ce5c334a660 100644
--- a/sound/soc/tegra/tegra_pcm.c
+++ b/sound/soc/tegra/tegra_pcm.c
@@ -61,12 +61,23 @@ static const struct snd_dmaengine_pcm_config tegra_dmaengine_pcm_config = {
 
 int tegra_pcm_platform_register(struct device *dev)
 {
-	return snd_dmaengine_pcm_register(dev, &tegra_dmaengine_pcm_config,
-			SND_DMAENGINE_PCM_FLAG_NO_DT |
-			SND_DMAENGINE_PCM_FLAG_COMPAT);
+	return snd_dmaengine_pcm_register(dev, &tegra_dmaengine_pcm_config, 0);
 }
 EXPORT_SYMBOL_GPL(tegra_pcm_platform_register);
 
+int tegra_pcm_platform_register_with_chan_names(struct device *dev,
+				struct snd_dmaengine_pcm_config *config,
+				char *txdmachan, char *rxdmachan)
+{
+	*config = tegra_dmaengine_pcm_config;
+	config->dma_dev = dev->parent;
+	config->chan_names[0] = txdmachan;
+	config->chan_names[1] = rxdmachan;
+
+	return snd_dmaengine_pcm_register(dev, config, 0);
+}
+EXPORT_SYMBOL_GPL(tegra_pcm_platform_register_with_chan_names);
+
 void tegra_pcm_platform_unregister(struct device *dev)
 {
 	return snd_dmaengine_pcm_unregister(dev);