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ALSA: hda - Turn on PIN_OUT from hdmi playback prepare.

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commit 9e76e6d031 upstream.

Turn on the pin widget's PIN_OUT bit from playback prepare. The pin is
enabled in open, but is disabled in hdmi_init_pin which is called during
system resume.  This causes a system suspend/resume during playback to
mute HDMI/DP. Enabling the pin in prepare instead of open allows calling
snd_pcm_prepare after a system resume to restore audio.

Signed-off-by: Dylan Reid <dgreid@chromium.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dylan Reid
2012-07-19 17:52:58 -07:00
committed by Greg Kroah-Hartman
parent 1569d721a9
commit 7eb31a7c9f
1 changed files with 6 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
sound/pci/hda/patch_hdmi.c
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@@ -876,7 +876,6 @@ static int hdmi_pcm_open(struct hda_pcm_stream *hinfo,
struct hdmi_spec_per_pin *per_pin;
struct hdmi_eld *eld;
struct hdmi_spec_per_cvt *per_cvt = NULL;
int pinctl;
/* Validate hinfo */
pin_idx = hinfo_to_pin_index(spec, hinfo);
@@ -912,11 +911,6 @@ static int hdmi_pcm_open(struct hda_pcm_stream *hinfo,
snd_hda_codec_write(codec, per_pin->pin_nid, 0,
AC_VERB_SET_CONNECT_SEL,
mux_idx);
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_assign(codec, pin_idx, per_cvt->cvt_nid);
/* Initially set the converter's capabilities */
@@ -1153,11 +1147,17 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
struct hdmi_spec *spec = codec->spec;
int pin_idx = hinfo_to_pin_index(spec, hinfo);
hda_nid_t pin_nid = spec->pins[pin_idx].pin_nid;
int pinctl;
hdmi_set_channel_count(codec, cvt_nid, substream->runtime->channels);
hdmi_setup_audio_infoframe(codec, pin_idx, substream);
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 hdmi_setup_stream(codec, cvt_nid, pin_nid, stream_tag, format);
}