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authorStephen Warren <swarren@nvidia.com>2014-01-30 11:52:16 -0700
committerTakashi Iwai <tiwai@suse.de>2014-01-31 17:57:02 +0100
commit75fae117a5dbde5ab984fa5c60705758cfbc6433 (patch)
treeea4167a1d71eaf6e3a5a742b4204bb90b3757967
parent5e87d5807110afd6bd659e1b98929fab43f3732f (diff)
downloadlinux-linaro-stable-75fae117a5dbde5ab984fa5c60705758cfbc6433.tar.gz
ALSA: hda/hdmi - allow PIN_OUT to be dynamically enabled
Commit 384a48d71520 "ALSA: hda: HDMI: Support codecs with fewer cvts than pins" dynamically enabled each pin widget's PIN_OUT only when the pin was actively in use. This was required on certain NVIDIA CODECs for correct operation. Specifically, if multiple pin widgets each had their mux input select the same audio converter widget and each pin widget had PIN_OUT enabled, then only one of the pin widgets would actually receive the audio, and often not the one the user wanted! However, this apparently broke some Intel systems, and commit 6169b673618b "ALSA: hda - Always turn on pins for HDMI/DP" reverted the dynamic setting of PIN_OUT. This in turn broke the afore-mentioned NVIDIA CODECs. This change supports either dynamic or static handling of PIN_OUT, selected by a flag set up during CODEC initialization. This flag is enabled for all recent NVIDIA GPUs. Reported-by: Uosis <uosisl@gmail.com> Cc: <stable@vger.kernel.org> # v3.13 Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/pci/hda/patch_hdmi.c40
1 files changed, 36 insertions, 4 deletions
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 64f0a5e73a25..5ef95034d041 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -132,6 +132,9 @@ struct hdmi_spec {
struct hdmi_eld temp_eld;
struct hdmi_ops ops;
+
+ bool dyn_pin_out;
+
/*
* Non-generic VIA/NVIDIA specific
*/
@@ -500,15 +503,25 @@ static void hdmi_write_dip_byte(struct hda_codec *codec, hda_nid_t pin_nid,
static void hdmi_init_pin(struct hda_codec *codec, hda_nid_t pin_nid)
{
+ struct hdmi_spec *spec = codec->spec;
+ int pin_out;
+
/* Unmute */
if (get_wcaps(codec, pin_nid) & AC_WCAP_OUT_AMP)
snd_hda_codec_write(codec, pin_nid, 0,
AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
- /* Enable pin out: some machines with GM965 gets broken output when
- * the pin is disabled or changed while using with HDMI
- */
+
+ if (spec->dyn_pin_out)
+ /* Disable pin out until stream is active */
+ pin_out = 0;
+ else
+ /* Enable pin out: some machines with GM965 gets broken output
+ * when the pin is disabled or changed while using with HDMI
+ */
+ pin_out = PIN_OUT;
+
snd_hda_codec_write(codec, pin_nid, 0,
- AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
+ AC_VERB_SET_PIN_WIDGET_CONTROL, pin_out);
}
static int hdmi_get_channel_count(struct hda_codec *codec, hda_nid_t cvt_nid)
@@ -1735,6 +1748,7 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
hda_nid_t pin_nid = per_pin->pin_nid;
bool non_pcm;
+ int pinctl;
non_pcm = check_non_pcm_per_cvt(codec, cvt_nid);
mutex_lock(&per_pin->lock);
@@ -1744,6 +1758,14 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
hdmi_setup_audio_infoframe(codec, per_pin, non_pcm);
mutex_unlock(&per_pin->lock);
+ if (spec->dyn_pin_out) {
+ pinctl = snd_hda_codec_read(codec, pin_nid, 0,
+ AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
+ snd_hda_codec_write(codec, pin_nid, 0,
+ AC_VERB_SET_PIN_WIDGET_CONTROL,
+ pinctl | PIN_OUT);
+ }
+
return spec->ops.setup_stream(codec, cvt_nid, pin_nid, stream_tag, format);
}
@@ -1763,6 +1785,7 @@ static int hdmi_pcm_close(struct hda_pcm_stream *hinfo,
int cvt_idx, pin_idx;
struct hdmi_spec_per_cvt *per_cvt;
struct hdmi_spec_per_pin *per_pin;
+ int pinctl;
if (hinfo->nid) {
cvt_idx = cvt_nid_to_cvt_index(spec, hinfo->nid);
@@ -1779,6 +1802,14 @@ static int hdmi_pcm_close(struct hda_pcm_stream *hinfo,
return -EINVAL;
per_pin = get_pin(spec, pin_idx);
+ if (spec->dyn_pin_out) {
+ pinctl = snd_hda_codec_read(codec, per_pin->pin_nid, 0,
+ AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
+ snd_hda_codec_write(codec, per_pin->pin_nid, 0,
+ AC_VERB_SET_PIN_WIDGET_CONTROL,
+ pinctl & ~PIN_OUT);
+ }
+
snd_hda_spdif_ctls_unassign(codec, pin_idx);
mutex_lock(&per_pin->lock);
@@ -2840,6 +2871,7 @@ static int patch_nvhdmi(struct hda_codec *codec)
return err;
spec = codec->spec;
+ spec->dyn_pin_out = true;
spec->ops.chmap_cea_alloc_validate_get_type =
nvhdmi_chmap_cea_alloc_validate_get_type;