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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-10-07 15:34:15 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-10-07 16:05:04 +0200 |
| commit | 2844659842017c981f6e6f74aca3a7ebe10edebb (patch) | |
| tree | 0913d12fbf8ac2a58e8d29bec40a539e213c6d07 /sound | |
| parent | 143875400b33fc20e9dd060e90034f2e9e9ffc98 (diff) | |
| parent | 87f77eff710db012a994ee319b5627c26a7b2204 (diff) | |
| download | linux-stable-2844659842017c981f6e6f74aca3a7ebe10edebb.tar.gz linux-stable-2844659842017c981f6e6f74aca3a7ebe10edebb.tar.bz2 linux-stable-2844659842017c981f6e6f74aca3a7ebe10edebb.zip | |
Merge remote-tracking branch 'takashi/topic/drm-sync-audio-rate' into drm-intel-next-queued
Pull in the i915/hda changes for N/CTS setting so I can apply the
follow-up documentation work for drm/i915.
Some conflicts because ofc we had to rework i915 while that N/CTS work
was going on. But not more than adjacent changes really.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/hda/patch_hdmi.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index acbfbe087ee8..3a2d4a5a1714 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1775,6 +1775,16 @@ static bool check_non_pcm_per_cvt(struct hda_codec *codec, hda_nid_t cvt_nid) return non_pcm; } +/* There is a fixed mapping between audio pin node and display port + * on current Intel platforms: + * Pin Widget 5 - PORT B (port = 1 in i915 driver) + * Pin Widget 6 - PORT C (port = 2 in i915 driver) + * Pin Widget 7 - PORT D (port = 3 in i915 driver) + */ +static int intel_pin2port(hda_nid_t pin_nid) +{ + return pin_nid - 4; +} /* * HDMI callbacks @@ -1791,6 +1801,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, int pin_idx = hinfo_to_pin_index(codec, hinfo); struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx); hda_nid_t pin_nid = per_pin->pin_nid; + struct snd_pcm_runtime *runtime = substream->runtime; + struct i915_audio_component *acomp = codec->bus->core.audio_component; bool non_pcm; int pinctl; @@ -1807,6 +1819,13 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, intel_not_share_assigned_cvt(codec, pin_nid, per_pin->mux_idx); } + /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ + /* Todo: add DP1.2 MST audio support later */ + if (acomp && acomp->ops && acomp->ops->sync_audio_rate) + acomp->ops->sync_audio_rate(acomp->dev, + intel_pin2port(pin_nid), + runtime->rate); + non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock); per_pin->channels = substream->runtime->channels; |