@@ -466,4 +466,28 @@ void snd_dmaengine_pcm_unregister(struct device *dev)
}
EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_unregister);
+
+/**
+ * snd_dmaengine_pcm_get_quirks - Get dmaengine quirks based PCM device
+ * @dev: Parent device the PCM was register with
+ */
+int snd_dmaengine_pcm_get_quirks(struct device *dev)
+{
+ struct snd_soc_platform *platform;
+ struct dmaengine_pcm *pcm;
+ int ret = -ENODEV;
+
+ platform = snd_soc_lookup_platform(dev);
+ if (!platform)
+ return ret;
+
+ pcm = soc_platform_to_pcm(platform);
+
+ if (pcm->chan)
+ ret = dmaengine_get_quirks(pcm->chan[0]);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_get_quirks);
+
MODULE_LICENSE("GPL");
Add snd_dmaengine_pcm_get_quirks for I2S devices to query dma controller's quirks if they need it to make special workaround due to broken dma controller design Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> --- Changes in v5: None Changes in v4: None Changes in v3: None Changes in v2: None Changes in v1: None sound/soc/soc-generic-dmaengine-pcm.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)