1 files changed, 37 insertions, 22 deletions

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 81b7b791b3c3..c505fd5d338c 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -65,7 +65,11 @@ struct hdmi_spec_per_pin {
         hda_nid_t pin_nid;
         int num_mux_nids;
         hda_nid_t mux_nids[HDA_MAX_CONNECTIONS];
+
+        struct hda_codec *codec;
         struct hdmi_eld sink_eld;
+        struct delayed_work work;
+        int repoll_count;
 };
 
 struct hdmi_spec {
@@ -745,8 +749,7 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec, int pin_idx,
  * Unsolicited events
  */
 
-static void hdmi_present_sense(struct hda_codec *codec, hda_nid_t pin_nid,
-                               struct hdmi_eld *eld);
+static void hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll);
 
 static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
 {
@@ -755,7 +758,6 @@ static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
         int pd = !!(res & AC_UNSOL_RES_PD);
         int eldv = !!(res & AC_UNSOL_RES_ELDV);
         int pin_idx;
-        struct hdmi_eld *eld;
 
         printk(KERN_INFO
                 "HDMI hot plug event: Codec=%d Pin=%d Presence_Detect=%d ELD_Valid=%d\n",
@@ -764,17 +766,8 @@ static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
         pin_idx = pin_nid_to_pin_index(spec, pin_nid);
         if (pin_idx < 0)
                 return;
-        eld = &spec->pins[pin_idx].sink_eld;
-
-        hdmi_present_sense(codec, pin_nid, eld);
 
-        /*
-         * HDMI sink's ELD info cannot always be retrieved for now, e.g.
-         * in console or for audio devices. Assume the highest speakers
-         * configuration, to _not_ prohibit multi-channel audio playback.
-         */
-        if (!eld->spk_alloc)
-                eld->spk_alloc = 0xffff;
+        hdmi_present_sense(&spec->pins[pin_idx], 1);
 }
 
 static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res)
@@ -968,9 +961,11 @@ static int hdmi_read_pin_conn(struct hda_codec *codec, int pin_idx)
         return 0;
 }
 
-static void hdmi_present_sense(struct hda_codec *codec, hda_nid_t pin_nid,
-                               struct hdmi_eld *eld)
+static void hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll)
 {
+        struct hda_codec *codec = per_pin->codec;
+        struct hdmi_eld *eld = &per_pin->sink_eld;
+        hda_nid_t pin_nid = per_pin->pin_nid;
         /*
          * Always execute a GetPinSense verb here, even when called from
          * hdmi_intrinsic_event; for some NVIDIA HW, the unsolicited
@@ -980,26 +975,42 @@ static void hdmi_present_sense(struct hda_codec *codec, hda_nid_t pin_nid,
          * the unsolicited response to avoid custom WARs.
          */
         int present = snd_hda_pin_sense(codec, pin_nid);
+        bool eld_valid = false;
 
-        memset(eld, 0, sizeof(*eld));
+        memset(eld, 0, offsetof(struct hdmi_eld, eld_buffer));
 
         eld->monitor_present    = !!(present & AC_PINSENSE_PRESENCE);
         if (eld->monitor_present)
-                eld->eld_valid  = !!(present & AC_PINSENSE_ELDV);
-        else
-                eld->eld_valid  = 0;
+                eld_valid       = !!(present & AC_PINSENSE_ELDV);
 
         printk(KERN_INFO
                 "HDMI status: Codec=%d Pin=%d Presence_Detect=%d ELD_Valid=%d\n",
-                codec->addr, pin_nid, eld->monitor_present, eld->eld_valid);
+                codec->addr, pin_nid, eld->monitor_present, eld_valid);
 
-        if (eld->eld_valid)
+        if (eld_valid) {
                 if (!snd_hdmi_get_eld(eld, codec, pin_nid))
                         snd_hdmi_show_eld(eld);
+                else if (repoll) {
+                        queue_delayed_work(codec->bus->workq,
+                                           &per_pin->work,
+                                           msecs_to_jiffies(300));
+                }
+        }
 
         snd_hda_input_jack_report(codec, pin_nid);
 }
 
+static void hdmi_repoll_eld(struct work_struct *work)
+{
+        struct hdmi_spec_per_pin *per_pin =
+        container_of(to_delayed_work(work), struct hdmi_spec_per_pin, work);
+
+        if (per_pin->repoll_count++ > 6)
+                per_pin->repoll_count = 0;
+
+        hdmi_present_sense(per_pin, per_pin->repoll_count);
+}
+
 static int hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid)
 {
         struct hdmi_spec *spec = codec->spec;
@@ -1228,7 +1239,7 @@ static int generic_hdmi_build_jack(struct hda_codec *codec, int pin_idx)
         if (err < 0)
                 return err;
 
-        hdmi_present_sense(codec, per_pin->pin_nid, &per_pin->sink_eld);
+        hdmi_present_sense(per_pin, 0);
         return 0;
 }
 
@@ -1279,6 +1290,8 @@ static int generic_hdmi_init(struct hda_codec *codec)
                                     AC_VERB_SET_UNSOLICITED_ENABLE,
                                     AC_USRSP_EN | pin_nid);
 
+                per_pin->codec = codec;
+                INIT_DELAYED_WORK(&per_pin->work, hdmi_repoll_eld);
                 snd_hda_eld_proc_new(codec, eld, pin_idx);
         }
         return 0;
@@ -1293,10 +1306,12 @@ static void generic_hdmi_free(struct hda_codec *codec)
                 struct hdmi_spec_per_pin *per_pin = &spec->pins[pin_idx];
                 struct hdmi_eld *eld = &per_pin->sink_eld;
 
+                cancel_delayed_work(&per_pin->work);
                 snd_hda_eld_proc_free(codec, eld);
         }
         snd_hda_input_jack_free(codec);
 
+        flush_workqueue(codec->bus->workq);
         kfree(spec);
 }