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authorMengdong Lin <mengdong.lin@intel.com>2014-06-12 14:42:25 +0800
committerTakashi Iwai <tiwai@suse.de>2014-06-12 11:59:43 +0200
commitb4f75aea553a2146bbdd159c397a2ac42cbb9902 (patch)
tree1e4d9e79ace13c2b8bf2a8ee5e1d3c1d3db68354
parent2bd0ae464a6cf7363bbf72c8545e0aa43caa57f0 (diff)
ALSA: hda - verify pin:converter connection on unsol event for HSW and VLV
This patch will verify the pin's coverter selection for an active stream when an unsol event reports this pin becomes available again after a display mode change or hot-plug event. For Haswell+ and Valleyview: display mode change or hot-plug can change the transcoder:port connection and make all the involved audio pins share the 1st converter. So the stream using 1st convertor will flow to multiple pins but active streams using other converters will fail. This workaround is to assure the pin selects the right conveter and an assigned converter is not shared by other unused pins. Signed-off-by: Mengdong Lin <mengdong.lin@intel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/pci/hda/patch_hdmi.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index be0a9ee0b804..3e4417b0ddbe 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1594,10 +1594,18 @@ static bool hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll)
* Re-setup pin and infoframe. This is needed e.g. when
* - sink is first plugged-in (infoframe is not set up if !monitor_present)
* - transcoder can change during stream playback on Haswell
+ * and this can make HW reset converter selection on a pin.
*/
- if (eld->eld_valid && !old_eld_valid && per_pin->setup)
+ if (eld->eld_valid && !old_eld_valid && per_pin->setup) {
+ if (is_haswell_plus(codec) || is_valleyview(codec)) {
+ intel_verify_pin_cvt_connect(codec, per_pin);
+ intel_not_share_assigned_cvt(codec, pin_nid,
+ per_pin->mux_idx);
+ }
+
hdmi_setup_audio_infoframe(codec, per_pin,
per_pin->non_pcm);
+ }
}
if (eld_changed)