From 3f54aa5091f48e9d8ce6e99b248449d08acccb26 Mon Sep 17 00:00:00 2001
From: Wu Fengguang <fengguang.wu@intel.com>
Date: Wed, 18 Nov 2009 12:38:03 +0800
Subject: ALSA: intelhdmi - probe for monitor/eld presence at module init time
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This avoids lost of presence info on module reloading.
The presence info used to be only updated at the (rare) hotplug events.

Proposed by David, thanks!

CC: David Härdeman <david@hardeman.nu>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/pci/hda/patch_intelhdmi.c | 32 ++++++++++++++++++++++----------
 1 file changed, 22 insertions(+), 10 deletions(-)

(limited to 'sound')

diff --git a/sound/pci/hda/patch_intelhdmi.c b/sound/pci/hda/patch_intelhdmi.c
index 095c993f4b7..c5fd011567f 100644
--- a/sound/pci/hda/patch_intelhdmi.c
+++ b/sound/pci/hda/patch_intelhdmi.c
@@ -259,6 +259,25 @@ static int intel_hdmi_read_pin_conn(struct hda_codec *codec, hda_nid_t pin_nid)
 	return 0;
 }
 
+static void hdmi_get_show_eld(struct hda_codec *codec, hda_nid_t pin_nid,
+			      struct hdmi_eld *eld)
+{
+	if (!snd_hdmi_get_eld(eld, codec, pin_nid))
+		snd_hdmi_show_eld(eld);
+}
+
+static void hdmi_present_sense(struct hda_codec *codec, hda_nid_t pin_nid,
+			       struct hdmi_eld *eld)
+{
+	int present = snd_hda_pin_sense(codec, pin_nid);
+
+	eld->monitor_present	= !!(present & AC_PINSENSE_PRESENCE);
+	eld->eld_valid		= !!(present & AC_PINSENSE_ELDV);
+
+	if (present & AC_PINSENSE_ELDV)
+		hdmi_get_show_eld(codec, pin_nid, eld);
+}
+
 static int intel_hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid)
 {
 	struct intel_hdmi_spec *spec = codec->spec;
@@ -269,6 +288,8 @@ static int intel_hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid)
 		return -EINVAL;
 	}
 
+	hdmi_present_sense(codec, pin_nid, &spec->sink_eld[spec->num_pins]);
+
 	spec->pin[spec->num_pins] = pin_nid;
 	spec->num_pins++;
 
@@ -436,15 +457,6 @@ static void hdmi_debug_channel_mapping(struct hda_codec *codec, hda_nid_t nid)
 #endif
 }
 
-static void hdmi_parse_eld(struct hda_codec *codec, int index)
-{
-	struct intel_hdmi_spec *spec = codec->spec;
-	struct hdmi_eld *eld = &spec->sink_eld[index];
-
-	if (!snd_hdmi_get_eld(eld, codec, spec->pin[index]))
-		snd_hdmi_show_eld(eld);
-}
-
 
 /*
  * Audio InfoFrame routines
@@ -677,7 +689,7 @@ static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
 	spec->sink_eld[index].eld_valid = eldv;
 
 	if (pind && eldv) {
-		hdmi_parse_eld(codec, index);
+		hdmi_get_show_eld(codec, spec->pin[index], &spec->sink_eld[index]);
 		/* TODO: do real things about ELD */
 	}
 }
-- 
cgit v1.2.3-18-g5258