For Intel Haswell HDMI codecs, the pins choose converter 0 by default.
This would cause conflict when playing audio on unused pins,the pin with
physical device connected would get audio data too.
i.e. Pin 0/1/2 default choose converter 0, pin 1 has HDMI monitor connected.
when play audio on Pin 0 or pin 2, pin 1 could get audio data too.
This patch configure unused pins to choose different converter.
Signed-off-by: Wang Xingchao <xingchao.wang at linux.intel.com>
---
sound/pci/hda/patch_hdmi.c | 89 +++++++++++++++++++++++++++++++++++++-------
1 file changed, 75 insertions(+), 14 deletions(-)
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 8983747..e887584 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1110,26 +1110,15 @@ static int hdmi_setup_stream(struct hda_codec *codec, hda_nid_t cvt_nid,
return 0;
}
-/*
- * HDA PCM callbacks
- */
-static int hdmi_pcm_open(struct hda_pcm_stream *hinfo,
- struct hda_codec *codec,
- struct snd_pcm_substream *substream)
+static int hdmi_choose_cvt(struct hda_codec *codec,
+ int pin_idx, int *cvt_id, int *mux_id)
{
struct hdmi_spec *spec = codec->spec;
- struct snd_pcm_runtime *runtime = substream->runtime;
- int pin_idx, cvt_idx, mux_idx = 0;
struct hdmi_spec_per_pin *per_pin;
- struct hdmi_eld *eld;
struct hdmi_spec_per_cvt *per_cvt = NULL;
+ int cvt_idx, mux_idx = 0;
- /* Validate hinfo */
- pin_idx = hinfo_to_pin_index(spec, hinfo);
- if (snd_BUG_ON(pin_idx < 0))
- return -EINVAL;
per_pin = get_pin(spec, pin_idx);
- eld = &per_pin->sink_eld;
/* Dynamically assign converter to stream */
for (cvt_idx = 0; cvt_idx < spec->num_cvts; cvt_idx++) {
@@ -1147,10 +1136,77 @@ static int hdmi_pcm_open(struct hda_pcm_stream *hinfo,
continue;
break;
}
+
/* No free converters */
if (cvt_idx == spec->num_cvts)
return -ENODEV;
+ if (cvt_id)
+ *cvt_id = cvt_idx;
+ if (mux_id)
+ *mux_id = mux_idx;
+
+ return 0;
+}
+
+static void haswell_config_cvts(struct hda_codec *codec,
+ int pin_id, int mux_id)
+{
+ struct hdmi_spec *spec = codec->spec;
+ struct hdmi_spec_per_pin *per_pin;
+ int pin_idx, mux_idx;
+ int curr = -1;
+ int err;
+
+ for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
+ per_pin = get_pin(spec, pin_idx);
+
+ if (pin_idx == pin_id)
+ continue;
+
+ curr = snd_hda_codec_read(codec, per_pin->pin_nid, 0,
+ AC_VERB_GET_CONNECT_SEL, 0);
+
+ /* Choose another unused converter */
+ if (curr == mux_id) {
+ err = hdmi_choose_cvt(codec, pin_idx, NULL, &mux_idx);
+ if (err < 0)
+ return;
+ snd_printk("HDMI: choose converter %d for pin %d\n", mux_idx, pin_idx);
+ snd_hda_codec_write(codec, per_pin->pin_nid, 0,
+ AC_VERB_SET_CONNECT_SEL,
+ mux_idx);
+ }
+ }
+}
+
+/*
+ * HDA PCM callbacks
+ */
+static int hdmi_pcm_open(struct hda_pcm_stream *hinfo,
+ struct hda_codec *codec,
+ struct snd_pcm_substream *substream)
+{
+ struct hdmi_spec *spec = codec->spec;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ int pin_idx, cvt_idx, mux_idx = 0;
+ struct hdmi_spec_per_pin *per_pin;
+ struct hdmi_eld *eld;
+ struct hdmi_spec_per_cvt *per_cvt = NULL;
+ int err;
+
+ /* Validate hinfo */
+ pin_idx = hinfo_to_pin_index(spec, hinfo);
+ if (snd_BUG_ON(pin_idx < 0))
+ return -EINVAL;
+ per_pin = get_pin(spec, pin_idx);
+ eld = &per_pin->sink_eld;
+
+ err = hdmi_choose_cvt(codec, pin_idx, &cvt_idx, &mux_idx);
+ if (err < 0)
+ return err;
+
+ per_cvt = get_cvt(spec, cvt_idx);
/* Claim converter */
per_cvt->assigned = 1;
hinfo->nid = per_cvt->cvt_nid;
@@ -1158,6 +1214,11 @@ static int hdmi_pcm_open(struct hda_pcm_stream *hinfo,
snd_hda_codec_write(codec, per_pin->pin_nid, 0,
AC_VERB_SET_CONNECT_SEL,
mux_idx);
+
+ /* configure unused pins to choose other converters */
+ if (codec->vendor_id == 0x80862807)
+ haswell_config_cvts(codec, pin_idx, mux_idx);
+
snd_hda_spdif_ctls_assign(codec, pin_idx, per_cvt->cvt_nid);
/* Initially set the converter's capabilities */
--
1.7.9.5
