From d02667e6206fb3be0990c38af8447a4ed2b74c11 Mon Sep 17 00:00:00 2001
From: Vitaliy Kulikov <Vitaliy.Kulikov@idt.com>
Date: Fri, 22 Jul 2011 18:18:15 -0500
Subject: ALSA: hda - Fix invalid mute led state on resume of IDT codecs

Codec state is not restored immediately on resume but on the first
access when power-save is enabled.  That leads to an invalid mute led
state after resume until either sound is played or some control is
changed.  This patch adds a possibility for a vendor specific patch to
restore codec state immediately after resume if required.  And it adds
code to restore IDT codecs state immediately on resume on HP systems
with mute led support.

Signed-off-by: Vitaliy Kulikov <Vitaliy.Kulikov@idt.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 9c27a3a..c0e83ed 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -5103,6 +5103,8 @@ int snd_hda_resume(struct hda_bus *bus)
 	struct hda_codec *codec;
 
 	list_for_each_entry(codec, &bus->codec_list, list) {
+		if (codec->patch_ops.pre_resume)
+			codec->patch_ops.pre_resume(codec);
 		if (snd_hda_codec_needs_resume(codec))
 			hda_call_codec_resume(codec);
 	}
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index f465e07..8216146 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -712,6 +712,9 @@ struct hda_codec_ops {
 	int (*check_power_status)(struct hda_codec *codec, hda_nid_t nid);
 #endif
 	void (*reboot_notify)(struct hda_codec *codec);
+#ifdef SND_HDA_NEEDS_RESUME
+	int (*pre_resume)(struct hda_codec *codec);
+#endif
 };
 
 /* record for amp information cache */
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 00ea2bd..c4a6ecb 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -4935,6 +4935,17 @@ static void stac927x_proc_hook(struct snd_info_buffer *buffer,
 #endif
 
 #ifdef SND_HDA_NEEDS_RESUME
+static int stac92xx_pre_resume(struct hda_codec *codec)
+{
+	struct sigmatel_spec *spec = codec->spec;
+
+	/* sync mute LED */
+	if (spec->gpio_led)
+		stac_gpio_set(codec, spec->gpio_mask,
+				spec->gpio_dir, spec->gpio_data);
+	return 0;
+}
+
 static int stac92xx_resume(struct hda_codec *codec)
 {
 	struct sigmatel_spec *spec = codec->spec;
@@ -5013,6 +5024,7 @@ static const struct hda_codec_ops stac92xx_patch_ops = {
 #ifdef SND_HDA_NEEDS_RESUME
 	.suspend = stac92xx_suspend,
 	.resume = stac92xx_resume,
+	.pre_resume = stac92xx_pre_resume,
 #endif
 	.reboot_notify = stac92xx_shutup,
 };
-- 
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