[PATCH 2/2] ASoC: imx-card: Add playback_only or capture_only support

[Shengjiu Wang <shengjiu.wang@nxp.com>]

With the DPCM case, the backend only support capture or
playback, then the linked frontend can only support
capture or playback, but frontend can't automatically
enable only capture or playback, it needs the input
from dt-binding.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
---
 sound/soc/fsl/imx-card.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sound/soc/fsl/imx-card.c b/sound/soc/fsl/imx-card.c
index ac043ad367ac..905294682996 100644
--- a/sound/soc/fsl/imx-card.c
+++ b/sound/soc/fsl/imx-card.c
@@ -518,6 +518,7 @@ static int imx_card_parse_of(struct imx_card_data *data)
 	struct snd_soc_dai_link *link;
 	struct dai_link_data *link_data;
 	struct of_phandle_args args;
+	bool playback_only, capture_only;
 	int ret, num_links;
 	u32 asrc_fmt = 0;
 	u32 width;
@@ -679,6 +680,10 @@ static int imx_card_parse_of(struct imx_card_data *data)
 			link->ops = &imx_aif_ops;
 		}
 
+		graph_util_parse_link_direction(np, &playback_only, &capture_only);
+		link->playback_only = playback_only;
+		link->capture_only = capture_only;
+
 		/* Get dai fmt */
 		ret = simple_util_parse_daifmt(dev, np, codec,
 					       NULL, &link->dai_fmt);
-- 
2.34.1