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ALSA: hda-intel: reorder HDMI audio enabling sequence

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Reorder HDMI audio enabling sequence so that
	1) the sink knows about the coming audio stream
	2) unmute
	3) start transferring audio samples

The theory is that in the path A=>B=>C, we first make C ready, and then
enable B, and lastly allow A to send audio samples.

Signed-off-by: Wu Fengguang <wfg@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Wu Fengguang 2008-11-17 16:57:33 +08:00 committed by Takashi Iwai
parent c0cea0d09d
commit 796359d150
1 changed files with 6 additions and 6 deletions
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12
sound/pci/hda/patch_intelhdmi.c
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@ -312,16 +312,16 @@ static void hdmi_write_dip_byte(struct hda_codec *codec, hda_nid_t nid,
static void hdmi_enable_output(struct hda_codec *codec)
{
/* Enable pin out and unmute */
snd_hda_sequence_write(codec, pinout_enable_verb);
if (get_wcaps(codec, PIN_NID) & AC_WCAP_OUT_AMP)
snd_hda_codec_write(codec, PIN_NID, 0,
AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
/* Enable Audio InfoFrame Transmission */
hdmi_set_dip_index(codec, PIN_NID, 0x0, 0x0);
snd_hda_codec_write(codec, PIN_NID, 0, AC_VERB_SET_HDMI_DIP_XMIT,
AC_DIPXMIT_BEST);
/* Unmute */
if (get_wcaps(codec, PIN_NID) & AC_WCAP_OUT_AMP)
snd_hda_codec_write(codec, PIN_NID, 0,
AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
/* Enable pin out */
snd_hda_sequence_write(codec, pinout_enable_verb);
}
static void hdmi_disable_output(struct hda_codec *codec)