[alsa-devel] [RFC PATCH 1/7] ALSA: hda - add mst_no_extra_pcms flag to hda_codec

[Kai Vehmanen]

Add a flag to hda_codec struct to control whether legacy PCM
numbering should be followed in DP-MST mode. When set, no backup
PCMs will be created and PCM count is limited to number of
converters.

Signed-off-by: Kai Vehmanen <kai.vehmanen at linux.intel.com>
---
 include/sound/hda_codec.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/sound/hda_codec.h b/include/sound/hda_codec.h
index 9a0393cf024c..ac18f428eda6 100644
--- a/include/sound/hda_codec.h
+++ b/include/sound/hda_codec.h
@@ -254,6 +254,7 @@ struct hda_codec {
 	unsigned int force_pin_prefix:1; /* Add location prefix */
 	unsigned int link_down_at_suspend:1; /* link down at runtime suspend */
 	unsigned int relaxed_resume:1;	/* don't resume forcibly for jack */
+	unsigned int mst_no_extra_pcms:1; /* no backup PCMs for DP-MST */
 
 #ifdef CONFIG_PM
 	unsigned long power_on_acct;
-- 
2.17.1