[PATCH 5/8] ASoC: SOF: Intel: sdw: relax sdw machine select constraints

[Kai Vehmanen]

From: randerwang <rander.wang at linux.intel.com>

On some platforms such as Up Extreme all links are enabled but only one
link can be used by external codec. Instead of exact match of two masks,
first check whether link_mask of mach is subset of link_mask supported
by hw and then go on searching link_adr.

Signed-off-by: randerwang <rander.wang at linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski at linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen at linux.intel.com>
---
 sound/soc/sof/intel/hda.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index 578ac7b036b0..63ca920c8e6e 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -1107,7 +1107,15 @@ static int hda_sdw_machine_select(struct snd_sof_dev *sdev)
 	if (link_mask && !pdata->machine) {
 		for (mach = pdata->desc->alt_machines;
 		     mach && mach->link_mask; mach++) {
-			if (mach->link_mask != link_mask)
+			/*
+			 * On some platforms such as Up Extreme all links
+			 * are enabled but only one link can be used by
+			 * external codec. Instead of exact match of two masks,
+			 * first check whether link_mask of mach is subset of
+			 * link_mask supported by hw and then go on searching
+			 * link_adr
+			 */
+			if (~link_mask & mach->link_mask)
 				continue;
 
 			/* No need to match adr if there is no links defined */
-- 
2.26.0