ALSA: hda - Fix pin-detection of Nvidia HDMI

The behavior of Nvidia HDMI codec regarding the pin-detection unsol events
is based on the old HD-audio spec, i.e. PD bit indicates only the update
and doesn't show the current state.  Since the current code assumes the
new behavior, the pin-detection doesn't work relialby with these h/w.

This patch adds a flag for indicating the old spec, and fixes the issue
by checking the pin-detection explicitly for such hardware.

Tested-by: Wei Ni <wni@nvidia.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 16 insertions, 0 deletions

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 86067ee7863..2fc53961054 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -52,6 +52,10 @@ struct hdmi_spec {
          */
         struct hda_multi_out multiout;
         unsigned int codec_type;
+
+        /* misc flags */
+        /* PD bit indicates only the update, not the current state */
+        unsigned int old_pin_detect:1;
 };
 
 
@@ -616,6 +620,9 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec, hda_nid_t nid,
  * Unsolicited events
  */
 
+static void hdmi_present_sense(struct hda_codec *codec, hda_nid_t pin_nid,
+                               struct hdmi_eld *eld);
+
 static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
 {
         struct hdmi_spec *spec = codec->spec;
@@ -632,6 +639,12 @@ static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
         if (index < 0)
                 return;
 
+        if (spec->old_pin_detect) {
+                if (pind)
+                        hdmi_present_sense(codec, tag, &spec->sink_eld[index]);
+                pind = spec->sink_eld[index].monitor_present;
+        }
+
         spec->sink_eld[index].monitor_present = pind;
         spec->sink_eld[index].eld_valid = eldv;
 
diff --git a/sound/pci/hda/patch_nvhdmi.c b/sound/pci/hda/patch_nvhdmi.c
index 3c10c0b149f..b0652acee9b 100644
--- a/sound/pci/hda/patch_nvhdmi.c
+++ b/sound/pci/hda/patch_nvhdmi.c
@@ -478,6 +478,7 @@ static int patch_nvhdmi_8ch_89(struct hda_codec *codec)
 
         codec->spec = spec;
         spec->codec_type = HDA_CODEC_NVIDIA_MCP89;
+        spec->old_pin_detect = 1;
 
         if (hdmi_parse_codec(codec) < 0) {
                 codec->spec = NULL;
@@ -508,6 +509,7 @@ static int patch_nvhdmi_8ch_7x(struct hda_codec *codec)
         spec->multiout.max_channels = 8;
         spec->multiout.dig_out_nid = nvhdmi_master_con_nid_7x;
         spec->codec_type = HDA_CODEC_NVIDIA_MCP7X;
+        spec->old_pin_detect = 1;
 
         codec->patch_ops = nvhdmi_patch_ops_8ch_7x;
 
@@ -528,6 +530,7 @@ static int patch_nvhdmi_2ch(struct hda_codec *codec)
         spec->multiout.max_channels = 2;
         spec->multiout.dig_out_nid = nvhdmi_master_con_nid_7x;
         spec->codec_type = HDA_CODEC_NVIDIA_MCP7X;
+        spec->old_pin_detect = 1;
 
         codec->patch_ops = nvhdmi_patch_ops_2ch;