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ALSA: hda - rename function not_share_unassigned_cvt() 

The function name not_share_unassigned_cvt() is opposite to what it does.
This patch renames it to intel_not_share_assigned_cvt(), and addes comments
to explain why some Intel display codecs need this workaround.

Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Mengdong Lin 2013-11-04 01:13:13 -05:00 committed by Takashi Iwai
parent 611885bc96
commit 300016b960
1 changed files with 11 additions and 2 deletions
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13
sound/pci/hda/patch_hdmi.c
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@ -1328,7 +1328,16 @@ static int hdmi_choose_cvt(struct hda_codec *codec,
return 0;
}
static void not_share_unassigned_cvt(struct hda_codec *codec,
/* Intel HDMI workaround to fix audio routing issue:
* For some Intel display codecs, pins share the same connection list.
* So a conveter can be selected by multiple pins and playback on any of these
* pins will generate sound on the external display, because audio flows from
* the same converter to the display pipeline. Also muting one pin may make
* other pins have no sound output.
* So this function assures that an assigned converter for a pin is not selected
* by any other pins.
*/
static void intel_not_share_assigned_cvt(struct hda_codec *codec,
hda_nid_t pin_nid, int mux_idx)
{
struct hdmi_spec *spec = codec->spec;
@ -1408,7 +1417,7 @@ static int hdmi_pcm_open(struct hda_pcm_stream *hinfo,
/* configure unused pins to choose other converters */
if (is_haswell(codec) || is_valleyview(codec))
not_share_unassigned_cvt(codec, per_pin->pin_nid, mux_idx);
intel_not_share_assigned_cvt(codec, per_pin->pin_nid, mux_idx);
snd_hda_spdif_ctls_assign(codec, pin_idx, per_cvt->cvt_nid);