This is a guess work. Usually the DP audio info frame is just 8-bit
shifted from HDMI AI, so let's try to put CA in DIP frame 2 [24-31].
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
sound/x86/intel_hdmi_audio.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c
index f49520117dd6..24a18b88c927 100644
--- a/sound/x86/intel_hdmi_audio.c
+++ b/sound/x86/intel_hdmi_audio.c
@@ -626,20 +626,20 @@ static void snd_intelhad_prog_dip(struct snd_pcm_substream *substream,
u8 checksum = 0;
u32 info_frame;
int channels;
+ int ca;
channels = substream->runtime->channels;
had_write_register(intelhaddata, AUD_CNTL_ST, ctrl_state.regval);
+ ca = snd_intelhad_channel_allocation(intelhaddata, channels);
if (intelhaddata->dp_output) {
info_frame = DP_INFO_FRAME_WORD1;
- frame2.regval = 1;
+ frame2.regval = (substream->runtime->channels - 1) | (ca << 24);
} else {
info_frame = HDMI_INFO_FRAME_WORD1;
frame2.regx.chnl_cnt = substream->runtime->channels - 1;
-
- frame3.regx.chnl_alloc = snd_intelhad_channel_allocation(
- intelhaddata, channels);
+ frame3.regx.chnl_alloc = ca;
/* Calculte the byte wide checksum for all valid DIP words */
for (i = 0; i < BYTES_PER_WORD; i++)
--
2.11.0
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