[PATCH 1/3] ASoC: Intel: broadwell: Revert back SSP0 link to use dummy components

[Cezary Rojewski]

Recent series of patches targeting broadwell boards, while enabling
SOF, changed behavior for non-SOF solutions. In essence replacing
platform 'dummy' with actual 'platform' causes redundant stream
initialization to occur during audio start. hw_params for haswell-pcm
destroys initial stream right after its creation - only to recreate it
again from proceed from there.

While harmless so far, this flow isn't correct and should be corrected.
The actual need for dummy components for SSP0 link is questionable but
that issue is subject for another series.

Link to first message in conversation:
https://lkml.org/lkml/2020/3/18/54

Reported-by: Dominik Brodowski <linux at dominikbrodowski.net>
Fixes: 64df6afa0dab ("ASoC: Intel: broadwell: change cpu_dai and platform components for SOF")
Signed-off-by: Cezary Rojewski <cezary.rojewski at intel.com>
---
 sound/soc/intel/boards/broadwell.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/sound/soc/intel/boards/broadwell.c b/sound/soc/intel/boards/broadwell.c
index 0776ea2d4f36..9b639475e99f 100644
--- a/sound/soc/intel/boards/broadwell.c
+++ b/sound/soc/intel/boards/broadwell.c
@@ -167,9 +167,6 @@ SND_SOC_DAILINK_DEF(codec,
 #if IS_ENABLED(CONFIG_SND_SOC_SOF_BROADWELL)
 SND_SOC_DAILINK_DEF(ssp0_port,
 	    DAILINK_COMP_ARRAY(COMP_CPU("ssp0-port")));
-#else
-SND_SOC_DAILINK_DEF(ssp0_port,
-	    DAILINK_COMP_ARRAY(COMP_DUMMY()));
 #endif
 
 /* broadwell digital audio interface glue - connects codec <--> CPU */
@@ -225,7 +222,11 @@ static struct snd_soc_dai_link broadwell_rt286_dais[] = {
 		.ops = &broadwell_rt286_ops,
 		.dpcm_playback = 1,
 		.dpcm_capture = 1,
+#if !IS_ENABLED(CONFIG_SND_SOC_SOF_BROADWELL)
+		SND_SOC_DAILINK_REG(dummy, codec, dummy),
+#else
 		SND_SOC_DAILINK_REG(ssp0_port, codec, platform),
+#endif
 	},
 };
 
-- 
2.17.1