ALSA: hda - Intel HDMI audio support

Add support for Intel G45 integrated HDMI audio codecs.

This initial release supports:
	- 2 channel stereo sound output
	- report monitor's ELD information
Signed-off-by: Wu Fengguang <wfg@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/Kconfig

@@ -574,6 +574,14 @@ config SND_HDA_CODEC_NVHDMI
 	  Say Y here to include NVIDIA HDMI HD-audio codec support in
 	  snd-hda-intel driver, such as NVIDIA MCP78 HDMI.
 
+config SND_HDA_CODEC_INTELHDMI
+	bool "Build INTEL HDMI HD-audio codec support"
+	depends on SND_HDA_INTEL
+	default y
+	help
+	  Say Y here to include INTEL HDMI HD-audio codec support in
+	  snd-hda-intel driver, such as Eaglelake integrated HDMI.
+
 config SND_HDA_CODEC_CONEXANT
 	bool "Build Conexant HD-audio codec support"
 	depends on SND_HDA_INTEL

sound/pci/hda/Makefile

@@ -16,5 +16,6 @@ snd-hda-intel-$(CONFIG_SND_HDA_CODEC_ATIHDMI) += patch_atihdmi.o
 snd-hda-intel-$(CONFIG_SND_HDA_CODEC_CONEXANT) += patch_conexant.o
 snd-hda-intel-$(CONFIG_SND_HDA_CODEC_VIA) += patch_via.o
 snd-hda-intel-$(CONFIG_SND_HDA_CODEC_NVHDMI) += patch_nvhdmi.o
+snd-hda-intel-$(CONFIG_SND_HDA_CODEC_INTELHDMI) += patch_intelhdmi.o
 
 obj-$(CONFIG_SND_HDA_INTEL) += snd-hda-intel.o

sound/pci/hda/hda_codec.c

@@ -97,6 +97,9 @@ static const struct hda_codec_preset *hda_preset_tables[] = {
 #endif
 #ifdef CONFIG_SND_HDA_CODEC_NVHDMI
 	snd_hda_preset_nvhdmi,
+#endif
+#ifdef CONFIG_SND_HDA_CODEC_INTELHDMI
+	snd_hda_preset_intelhdmi,
 #endif
 	NULL
 };

sound/pci/hda/hda_patch.h

@@ -20,3 +20,5 @@ extern struct hda_codec_preset snd_hda_preset_conexant[];
 extern struct hda_codec_preset snd_hda_preset_via[];
 /* NVIDIA HDMI codecs */
 extern struct hda_codec_preset snd_hda_preset_nvhdmi[];
+/* INTEL HDMI codecs */
+extern struct hda_codec_preset snd_hda_preset_intelhdmi[];