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ALSA: x86: Set CA bits for DisplayPort too 

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@suse.de>
This commit is contained in:
Takashi Iwai 2017-02-02 17:06:38 +01:00
parent 4aedb9465f
commit 36ed34662f
1 changed files with 4 additions and 4 deletions
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8
sound/x86/intel_hdmi_audio.c
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@ -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++)