This is a note to let you know that I've just added the patch titled
ALSA: hda/hdmi - allow PIN_OUT to be dynamically enabled
to the 3.13-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
alsa-hda-hdmi-allow-pin_out-to-be-dynamically-enabled.patch
and it can be found in the queue-3.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 75fae117a5dbde5ab984fa5c60705758cfbc6433 Mon Sep 17 00:00:00 2001
From: Stephen Warren <swarren@xxxxxxxxxx>
Date: Thu, 30 Jan 2014 11:52:16 -0700
Subject: ALSA: hda/hdmi - allow PIN_OUT to be dynamically enabled
From: Stephen Warren <swarren@xxxxxxxxxx>
commit 75fae117a5dbde5ab984fa5c60705758cfbc6433 upstream.
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@xxxxxxxxx>
Signed-off-by: Stephen Warren <swarren@xxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/pci/hda/patch_hdmi.c | 40 ++++++++++++++++++++++++++++++++++++----
1 file changed, 36 insertions(+), 4 deletions(-)
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -129,6 +129,9 @@ struct hdmi_spec {
struct hdmi_eld temp_eld;
struct hdmi_ops ops;
+
+ bool dyn_pin_out;
+
/*
* Non-generic VIA/NVIDIA specific
*/
@@ -497,15 +500,25 @@ static void hdmi_write_dip_byte(struct h
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)
@@ -1747,6 +1760,7 @@ static int generic_hdmi_playback_pcm_pre
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);
@@ -1756,6 +1770,14 @@ static int generic_hdmi_playback_pcm_pre
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);
}
@@ -1775,6 +1797,7 @@ static int hdmi_pcm_close(struct hda_pcm
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);
@@ -1791,6 +1814,14 @@ static int hdmi_pcm_close(struct hda_pcm
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);
@@ -2848,6 +2879,7 @@ static int patch_nvhdmi(struct hda_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;
Patches currently in stable-queue which might be from swarren@xxxxxxxxxx are
queue-3.13/alsa-hda-hdmi-allow-pin_out-to-be-dynamically-enabled.patch
queue-3.13/serial-8250-enable-uart_bug_nomsr-for-tegra.patch
queue-3.13/rtc-max8907-weekday-encoding-fixes.patch
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