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ALSA : hda - not use assigned converters for all unused pins 

BIOS can mark a pin as "no physical connection" if the port is used by an
integrated display which is not audio capable. And audio driver will overlook
such pins.

On Haswell, such a disconneted pin will keep muted and connected to the 1st
converter by default. But if the 1st convertor is assigned to a connected pin
for audio streaming. The muted disconnected pin can make the connected pin
no sound output.

So this patch avoids using assigned converters for all unused pins for Haswell,
including the disconected pins.

Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Reviewed-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Mengdong Lin 2013-09-21 20:34:45 -04:00 committed by Takashi Iwai
parent b26d19e44a
commit f82d7d16ae
1 changed files with 30 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
sound/pci/hda/patch_hdmi.c
View File

@ -1149,32 +1149,43 @@ static int hdmi_choose_cvt(struct hda_codec *codec,
}
static void haswell_config_cvts(struct hda_codec *codec,
int pin_id, int mux_id)
hda_nid_t pin_nid, int mux_idx)
{
struct hdmi_spec *spec = codec->spec;
struct hdmi_spec_per_pin *per_pin;
int pin_idx, mux_idx;
int curr;
int err;
hda_nid_t nid, end_nid;
int cvt_idx, curr;
struct hdmi_spec_per_cvt *per_cvt;
for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
per_pin = get_pin(spec, pin_idx);
/* configure all pins, including "no physical connection" ones */
end_nid = codec->start_nid + codec->num_nodes;
for (nid = codec->start_nid; nid < end_nid; nid++) {
unsigned int wid_caps = get_wcaps(codec, nid);
unsigned int wid_type = get_wcaps_type(wid_caps);
if (pin_idx == pin_id)
if (wid_type != AC_WID_PIN)
continue;
curr = snd_hda_codec_read(codec, per_pin->pin_nid, 0,
AC_VERB_GET_CONNECT_SEL, 0);
if (nid == pin_nid)
continue;
/* Choose another unused converter */
if (curr == mux_id) {
err = hdmi_choose_cvt(codec, pin_idx, NULL, &mux_idx);
if (err < 0)
return;
snd_printdd("HDMI: choose converter %d for pin %d\n", mux_idx, pin_idx);
snd_hda_codec_write_cache(codec, per_pin->pin_nid, 0,
curr = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_CONNECT_SEL, 0);
if (curr != mux_idx)
continue;
/* choose an unassigned converter. The conveters in the
* connection list are in the same order as in the codec.
*/
for (cvt_idx = 0; cvt_idx < spec->num_cvts; cvt_idx++) {
per_cvt = get_cvt(spec, cvt_idx);
if (!per_cvt->assigned) {
snd_printdd("choose cvt %d for pin nid %d\n",
cvt_idx, nid);
snd_hda_codec_write_cache(codec, nid, 0,
AC_VERB_SET_CONNECT_SEL,
mux_idx);
cvt_idx);
break;
}
}
}
}
@ -1216,7 +1227,7 @@ static int hdmi_pcm_open(struct hda_pcm_stream *hinfo,
/* configure unused pins to choose other converters */
if (is_haswell(codec))
haswell_config_cvts(codec, pin_idx, mux_idx);
haswell_config_cvts(codec, per_pin->pin_nid, mux_idx);
snd_hda_spdif_ctls_assign(codec, pin_idx, per_cvt->cvt_nid);