---
sound/pci/hda/patch_hdmi.c | 73 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 73 insertions(+)
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 19bf782..10edab8 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -73,6 +73,8 @@ struct hdmi_spec_per_cvt {
struct hdmi_spec_per_pin {
hda_nid_t pin_nid;
+ /* pin idx, different device entries on the same pin use the same idx */
+ int pin_nid_idx;
int num_mux_nids;
hda_nid_t mux_nids[HDA_MAX_CONNECTIONS];
int mux_idx;
@@ -85,6 +87,7 @@ struct hdmi_spec_per_pin {
struct snd_kcontrol *eld_ctl;
struct snd_jack *acomp_jack; /* jack via audio component */
struct hda_pcm *pcm; /* pointer to spec->pcm_rec[n] dynamically*/
+ int pcm_idx; /* which pcm is attached. -1 means no pcm is attached */
int repoll_count;
bool setup; /* the stream has been set up by prepare callback */
int channels; /* current number of channels */
@@ -138,6 +141,8 @@ struct hdmi_spec {
struct snd_array pins; /* struct hdmi_spec_per_pin */
struct hda_pcm *pcm_rec[16];
struct mutex pcm_lock;
+ /* pcm_bitmap means which pcms have been assigned to pins*/
+ unsigned long pcm_bitmap;
int pcm_used; /* counter of pcm_rec[] */
unsigned int channels_max; /* max over all cvts */
@@ -1786,6 +1791,60 @@ static bool hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin,
return ret;
}
+static int hdmi_find_pcm_slot(struct hdmi_spec *spec,
+ struct hdmi_spec_per_pin *per_pin)
+{
+ int i;
+
+ /* try the prefer PCM */
+ if (!test_bit(per_pin->pin_nid_idx, &spec->pcm_bitmap))
+ return per_pin->pin_nid_idx;
+
+ /* have a second try; check the "reserved area" over num_pins */
+ for (i = spec->num_pins; i < spec->pcm_used; i++) {
+ if (!test_bit(i, &spec->pcm_bitmap))
+ return i;
+ }
+
+ /* the last try; check the empty slots in pins */
+ for (i = 0; i < spec->num_pins; i++) {
+ if (!test_bit(i, &spec->pcm_bitmap))
+ return i;
+ }
+ return -EBUSY;
+}
+
+static void hdmi_attach_hda_pcm(struct hdmi_spec *spec,
+ struct hdmi_spec_per_pin *per_pin)
+{
+ int idx;
+
+ /* pcm already be attached to the pin */
+ if (per_pin->pcm)
+ return;
+ idx = hdmi_find_pcm_slot(spec, per_pin);
+ if (idx == -ENODEV)
+ return;
+ per_pin->pcm_idx = idx;
+ per_pin->pcm = spec->pcm_rec[idx];
+ set_bit(idx, &spec->pcm_bitmap);
+}
+
+static void hdmi_detach_hda_pcm(struct hdmi_spec *spec,
+ struct hdmi_spec_per_pin *per_pin)
+{
+ int idx;
+
+ /* pcm already be detached from the pin */
+ if (!per_pin->pcm)
+ return;
+ idx = per_pin->pcm_idx;
+ per_pin->pcm_idx = -1;
+ per_pin->pcm = NULL;
+ if (idx >= 0 && idx < spec->pcm_used)
+ clear_bit(idx, &spec->pcm_bitmap);
+}
+
/* update ELD and jack state via audio component */
static void sync_eld_via_acomp(struct hda_codec *codec,
struct hdmi_spec_per_pin *per_pin)
@@ -1794,6 +1853,7 @@ static void sync_eld_via_acomp(struct hda_codec *codec,
struct hdmi_eld *eld = &spec->temp_eld;
int size;
+ mutex_lock(&spec->pcm_lock);
mutex_lock(&per_pin->lock);
size = snd_hdac_acomp_get_eld(&codec->bus->core, per_pin->pin_nid,
&eld->monitor_present, eld->eld_buffer,
@@ -1815,11 +1875,19 @@ static void sync_eld_via_acomp(struct hda_codec *codec,
eld->eld_size = 0;
}
+ if (spec->dyn_pcm_assign) {
+ if (eld->eld_valid)
+ hdmi_attach_hda_pcm(spec, per_pin);
+ else
+ hdmi_detach_hda_pcm(spec, per_pin);
+ }
+
update_eld(codec, per_pin, eld);
snd_jack_report(per_pin->acomp_jack,
eld->monitor_present ? SND_JACK_AVOUT : 0);
unlock:
mutex_unlock(&per_pin->lock);
+ mutex_unlock(&spec->pcm_lock);
}
static bool hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll)
@@ -1875,6 +1943,11 @@ static int hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid)
per_pin->pin_nid = pin_nid;
per_pin->non_pcm = false;
+ if (spec->dyn_pcm_assign)
+ per_pin->pcm_idx = -1;
+ else
+ per_pin->pcm_idx = pin_idx;
+ per_pin->pin_nid_idx = pin_idx;
err = hdmi_read_pin_conn(codec, pin_idx);
if (err < 0)
--
1.9.1
