ALSA: hda/hdmi: set default audio parameters for KAE silent-stream

[ Upstream commit 817479b3279f3f7dc1fe490da2649a84286318a5 ]

If the stream-id is zero, the keep-alive (KAE) will only ensure clock is
generated, but no audio samples are sent over display link. This happens
before first real audio stream is played out to a newly connected
receiver.

Reuse the code in silent_stream_enable() to set up stream parameters
to sane defaults values, also when using the newer keep-alive flow.

Fixes: e43cdb365703 ("ALSA: hda/hdmi: add keep-alive support for ADL-P and DG2")
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Tested-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/20221209101822.3893675-3-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 35bef8fcd240d7644822aed844a87e6db0344c09..3ebe8260485b81534203fd8f23e2a6355fe4f06d 100644 (file)
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1738,6 +1738,7 @@ static void silent_stream_enable(struct hda_codec *codec,
 
        switch (spec->silent_stream_type) {
        case SILENT_STREAM_KAE:
+               silent_stream_enable_i915(codec, per_pin);
                silent_stream_set_kae(codec, per_pin, true);
                break;
        case SILENT_STREAM_I915: