@@ -185,7 +185,7 @@ rz_ssi_stream_get(struct rz_ssi_priv *ssi, struct snd_pcm_substream *substream)
static inline bool rz_ssi_is_dma_enabled(struct rz_ssi_priv *ssi)
{
- return (ssi->playback.dma_ch || ssi->capture.dma_ch);
+ return (ssi->playback.dma_ch && (ssi->dma_rt || ssi->capture.dma_ch));
}
static int rz_ssi_stream_is_valid(struct rz_ssi_priv *ssi,
@@ -676,15 +676,26 @@ static void rz_ssi_release_dma_channels(struct rz_ssi_priv *ssi)
static int rz_ssi_dma_request(struct rz_ssi_priv *ssi, struct device *dev)
{
ssi->playback.dma_ch = dma_request_chan(dev, "tx");
+ if (IS_ERR(ssi->playback.dma_ch))
+ ssi->playback.dma_ch = NULL;
+
ssi->capture.dma_ch = dma_request_chan(dev, "rx");
+ if (IS_ERR(ssi->capture.dma_ch))
+ ssi->capture.dma_ch = NULL;
+
if (!ssi->playback.dma_ch && !ssi->capture.dma_ch) {
ssi->playback.dma_ch = dma_request_chan(dev, "rt");
- if (!ssi->playback.dma_ch)
+ if (IS_ERR(ssi->playback.dma_ch)) {
+ ssi->playback.dma_ch = NULL;
goto no_dma;
+ }
ssi->dma_rt = true;
}
+ if (!rz_ssi_is_dma_enabled(ssi))
+ goto no_dma;
+
if (ssi->playback.dma_ch &&
(rz_ssi_dma_slave_config(ssi, ssi->playback.dma_ch, true) < 0))
goto no_dma;