[PATCH v7 3/9] ASoC: hdac_hdmi: Fix to keep codec power active during enumeration.

From: "Subhransu S. Prusty" <subhransu.s.prusty@intel.com>
To: alsa-devel@alsa-project.org
Cc: tiwai@suse.de, lgirdwood@gmail.com,
	Ramesh Babu <ramesh.babu@intel.com>,
	patches.audio@intel.com, broonie@kernel.org,
	Vinod Koul <vinod.koul@intel.com>,
	"Subhransu S. Prusty" <subhransu.s.prusty@intel.com>
Subject: [PATCH v7 3/9] ASoC: hdac_hdmi: Fix to keep codec power active during enumeration.
Date: Wed, 17 Feb 2016 21:34:01 +0530	[thread overview]
Message-ID: <1455725047-7303-4-git-send-email-subhransu.s.prusty@intel.com> (raw)
In-Reply-To: <1455725047-7303-1-git-send-email-subhransu.s.prusty@intel.com>

From: Ramesh Babu <ramesh.babu@intel.com>

The codec power is turned OFF in the first explicit call to
pm_runtime_suspend to keep the i915 refcount balanced. During regular
operation, the power is turned ON/OFF in runtime PM handlers.

Signed-off-by: Ramesh Babu <ramesh.babu@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
 sound/soc/codecs/hdac_hdmi.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c
index f12af62..57ab212 100644
--- a/sound/soc/codecs/hdac_hdmi.c
+++ b/sound/soc/codecs/hdac_hdmi.c
@@ -1426,6 +1426,18 @@ static int hdac_hdmi_dev_probe(struct hdac_ext_device *edev)
 	INIT_LIST_HEAD(&hdmi_priv->pcm_list);
 	mutex_init(&hdmi_priv->pin_mutex);
 
+	/*
+	 * Turned off in the runtime_suspend during the first explicit
+	 * pm_runtime_suspend call.
+	 */
+	ret = snd_hdac_display_power(edev->hdac.bus, true);
+	if (ret < 0) {
+		dev_err(&edev->hdac.dev,
+			"Cannot turn on display power on i915 err: %d\n",
+			ret);
+		return ret;
+	}
+
 	ret = hdac_hdmi_parse_and_map_nid(edev, &hdmi_dais, &num_dais);
 	if (ret < 0) {
 		dev_err(&codec->dev,
-- 
1.9.1
