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@xxxxxxxxxxxxxx>
---
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(+)
diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c
index 6fd1906..42136005 100644
--- a/sound/soc/soc-generic-dmaengine-pcm.c
+++ b/sound/soc/soc-generic-dmaengine-pcm.c
@@ -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");
--
2.3.7
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