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56 lines
1.8 KiB
Diff
56 lines
1.8 KiB
Diff
From 6b0bcb5de0066e2706de8493f8a3c612c2157b82 Mon Sep 17 00:00:00 2001
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From: Matthias Reichl <hias@horus.com>
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Date: Fri, 29 Sep 2023 21:50:28 +0200
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Subject: [PATCH] ASoC: hdmi-codec: Fix broken channel map reporting
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Commit b84b53149476b22cc3b8677b771fb4cf06d1d455 upstream.
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Commit 4e0871333661 ("ASoC: hdmi-codec: fix channel info for
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compressed formats") accidentally changed hcp->chmap_idx from
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ca_id, the CEA channel allocation ID, to idx, the index to
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the table of channel mappings ordered by preference.
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This resulted in wrong channel maps being reported to userspace,
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eg for 5.1 "FL,FR,LFE,FC" was reported instead of the expected
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"FL,FR,LFE,FC,RL,RR":
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~ # speaker-test -c 6 -t sine
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...
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0 - Front Left
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3 - Front Center
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1 - Front Right
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2 - LFE
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4 - Unknown
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5 - Unknown
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~ # amixer cget iface=PCM,name='Playback Channel Map' | grep ': values'
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: values=3,4,8,7,0,0,0,0
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Switch this back to ca_id in case of PCM audio so the correct channel
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map is reported again and set it to HDMI_CODEC_CHMAP_IDX_UNKNOWN in
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case of non-PCM audio so the PCM channel map control returns "Unknown"
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channels (value 0).
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Fixes: 4e0871333661 ("ASoC: hdmi-codec: fix channel info for compressed formats")
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Cc: stable@vger.kernel.org
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Signed-off-by: Matthias Reichl <hias@horus.com>
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Link: https://lore.kernel.org/r/20230929195027.97136-1-hias@horus.com
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Signed-off-by: Mark Brown <broonie@kernel.org>
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---
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sound/soc/codecs/hdmi-codec.c | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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--- a/sound/soc/codecs/hdmi-codec.c
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+++ b/sound/soc/codecs/hdmi-codec.c
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@@ -520,7 +520,10 @@ static int hdmi_codec_fill_codec_params(
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hp->sample_rate = sample_rate;
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hp->channels = channels;
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- hcp->chmap_idx = idx;
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+ if (pcm_audio)
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+ hcp->chmap_idx = ca_id;
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+ else
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+ hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
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return 0;
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}
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