ASoC: SOF: nocodec: conditionally set dpcm_capture/dpcm_playback flags

[ Upstream commit ba4e5abc6c4e173af7c941c03c067263b686665d ]

With additional checks on dailinks, we see errors such as

[ 3.000418] sof-nocodec sof-nocodec: CPU DAI DMIC01 Pin for rtd
NoCodec-6 does not support playback

It's not clear why we set the dpcm_playback and dpcm_capture flags
unconditionally, add a check on number of channels for each direction
to avoid invalid configurations.

Fixes: 8017b8fd37bf5e ('ASoC: SOF: Add Nocodec machine driver support')
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@gmail.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20200608194415.4663-5-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/soc/sof/nocodec.c b/sound/soc/sof/nocodec.c
index 3d128e5..ea0fe9a 100644 (file)
--- a/sound/soc/sof/nocodec.c
+++ b/sound/soc/sof/nocodec.c
@@ -52,8 +52,10 @@ static int sof_nocodec_bes_setup(struct device *dev,
                links[i].platforms->name = dev_name(dev);
                links[i].codecs->dai_name = "snd-soc-dummy-dai";
                links[i].codecs->name = "snd-soc-dummy";
-               links[i].dpcm_playback = 1;
-               links[i].dpcm_capture = 1;
+               if (ops->drv[i].playback.channels_min)
+                       links[i].dpcm_playback = 1;
+               if (ops->drv[i].capture.channels_min)
+                       links[i].dpcm_capture = 1;
        }
 
        card->dai_link = links;