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Commit 36ed3466 authored by Takashi Iwai's avatar Takashi Iwai
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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: default avatarTakashi Iwai <tiwai@suse.de>
parent 4aedb946

sound/x86/intel_hdmi_audio.c

+4 −4
Original line number Diff line number Diff line
@@ -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++)