[PATCH 09/15] ASoC: rockchip: i2s: Add property to specify play/cap capability

[Sugar Zhang]

- 'rockchip,playback-only': support playback only.
- 'rockchip,capture-only': support capture only.

Signed-off-by: Sugar Zhang <sugar.zhang at rock-chips.com>
Change-Id: Ie022214de4e42bba5ba898ea39a4e39807e8d4ab
---
 sound/soc/rockchip/rockchip_i2s.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index 8a432ae..cedfe47 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -721,6 +721,11 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
 			soc_dai->capture.channels_max = val;
 	}
 
+	if (of_property_read_bool(node, "rockchip,playback-only"))
+		soc_dai->capture.channels_min = 0;
+	else if (of_property_read_bool(node, "rockchip,capture-only"))
+		soc_dai->playback.channels_min = 0;
+
 	ret = devm_snd_soc_register_component(&pdev->dev,
 					      &rockchip_i2s_component,
 					      soc_dai, 1);
-- 
2.7.4