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Subject[202/205] ALSA: hda - Fix pin-detection of Nvidia HDMI
2.6.34-stable review patch.  If anyone has any objections, please let us know.

------------------
From: Takashi Iwai <tiwai@suse.de>

commit 38faddb1afdd37218c196ac3db1cb5fbe7fc9c75 upstream.

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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
sound/pci/hda/patch_hdmi.c | 13 +++++++++++++
sound/pci/hda/patch_nvhdmi.c | 3 +++
2 files changed, 16 insertions(+)
--- 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(s
* 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
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;

--- 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 hd

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 hd
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_c
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;




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