ALSA: Support NVIDIA MCP78/7A HDMI audio

Add NVIDIA HDMI HD-audio codec support in snd-hda-intel driver,
include NVIDIA MCP78/7A HDMI.

Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

4 files changed, 170 insertions, 0 deletions

diff --git a/sound/pci/hda/Makefile b/sound/pci/hda/Makefile
index 6db92fd954d9..1980c6d207e7 100644
--- a/sound/pci/hda/Makefile
+++ b/sound/pci/hda/Makefile
@@ -15,5 +15,6 @@ snd-hda-intel-$(CONFIG_SND_HDA_CODEC_SI3054) += patch_si3054.o
 snd-hda-intel-$(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
 
 obj-$(CONFIG_SND_HDA_INTEL) += snd-hda-intel.o
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 94ea6543440e..fdb6d559f5dd 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -94,6 +94,9 @@ static const struct hda_codec_preset *hda_preset_tables[] = {
 #ifdef CONFIG_SND_HDA_CODEC_VIA
         snd_hda_preset_via,
 #endif
+#ifdef CONFIG_SND_HDA_CODEC_NVHDMI
+        snd_hda_preset_nvhdmi,
+#endif
         NULL
 };
 
diff --git a/sound/pci/hda/hda_patch.h b/sound/pci/hda/hda_patch.h
index 2fdf2358dbc2..dfbcfa88da44 100644
--- a/sound/pci/hda/hda_patch.h
+++ b/sound/pci/hda/hda_patch.h
@@ -18,3 +18,5 @@ extern struct hda_codec_preset snd_hda_preset_atihdmi[];
 extern struct hda_codec_preset snd_hda_preset_conexant[];
 /* VIA codecs */
 extern struct hda_codec_preset snd_hda_preset_via[];
+/* NVIDIA HDMI codecs */
+extern struct hda_codec_preset snd_hda_preset_nvhdmi[];
diff --git a/sound/pci/hda/patch_nvhdmi.c b/sound/pci/hda/patch_nvhdmi.c
new file mode 100644
index 000000000000..1a65775d28e1
--- /dev/null
+++ b/sound/pci/hda/patch_nvhdmi.c
@@ -0,0 +1,164 @@
+/*
+ * Universal Interface for Intel High Definition Audio Codec
+ *
+ * HD audio interface patch for NVIDIA HDMI codecs
+ *
+ * Copyright (c) 2008 NVIDIA Corp.  All rights reserved.
+ * Copyright (c) 2008 Wei Ni <wni@nvidia.com>
+ *
+ *
+ *  This driver is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This driver is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include "hda_codec.h"
+#include "hda_local.h"
+
+struct nvhdmi_spec {
+        struct hda_multi_out multiout;
+
+        struct hda_pcm pcm_rec;
+};
+
+static struct hda_verb nvhdmi_basic_init[] = {
+        /* enable digital output on pin widget */
+        { 0x05, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT },
+        {} /* terminator */
+};
+
+/*
+ * Controls
+ */
+static int nvhdmi_build_controls(struct hda_codec *codec)
+{
+        struct nvhdmi_spec *spec = codec->spec;
+        int err;
+
+        err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);
+        if (err < 0)
+                return err;
+
+        return 0;
+}
+
+static int nvhdmi_init(struct hda_codec *codec)
+{
+        snd_hda_sequence_write(codec, nvhdmi_basic_init);
+        return 0;
+}
+
+/*
+ * Digital out
+ */
+static int nvhdmi_dig_playback_pcm_open(struct hda_pcm_stream *hinfo,
+                                     struct hda_codec *codec,
+                                     struct snd_pcm_substream *substream)
+{
+        struct nvhdmi_spec *spec = codec->spec;
+        return snd_hda_multi_out_dig_open(codec, &spec->multiout);
+}
+
+static int nvhdmi_dig_playback_pcm_close(struct hda_pcm_stream *hinfo,
+                                      struct hda_codec *codec,
+                                      struct snd_pcm_substream *substream)
+{
+        struct nvhdmi_spec *spec = codec->spec;
+        return snd_hda_multi_out_dig_close(codec, &spec->multiout);
+}
+
+static int nvhdmi_dig_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
+                                            struct hda_codec *codec,
+                                            unsigned int stream_tag,
+                                            unsigned int format,
+                                            struct snd_pcm_substream *substream)
+{
+        struct nvhdmi_spec *spec = codec->spec;
+        return snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
+                                             format, substream);
+}
+
+static struct hda_pcm_stream nvhdmi_pcm_digital_playback = {
+        .substreams = 1,
+        .channels_min = 2,
+        .channels_max = 2,
+        .nid = 0x4, /* NID to query formats and rates and setup streams */
+        .rates = SNDRV_PCM_RATE_48000,
+        .maxbps = 16,
+        .formats = SNDRV_PCM_FMTBIT_S16_LE,
+        .ops = {
+                .open = nvhdmi_dig_playback_pcm_open,
+                .close = nvhdmi_dig_playback_pcm_close,
+                .prepare = nvhdmi_dig_playback_pcm_prepare
+        },
+};
+
+static int nvhdmi_build_pcms(struct hda_codec *codec)
+{
+        struct nvhdmi_spec *spec = codec->spec;
+        struct hda_pcm *info = &spec->pcm_rec;
+
+        codec->num_pcms = 1;
+        codec->pcm_info = info;
+
+        info->name = "NVIDIA HDMI";
+        info->stream[SNDRV_PCM_STREAM_PLAYBACK] = nvhdmi_pcm_digital_playback;
+
+        return 0;
+}
+
+static void nvhdmi_free(struct hda_codec *codec)
+{
+        kfree(codec->spec);
+}
+
+static struct hda_codec_ops nvhdmi_patch_ops = {
+        .build_controls = nvhdmi_build_controls,
+        .build_pcms = nvhdmi_build_pcms,
+        .init = nvhdmi_init,
+        .free = nvhdmi_free,
+};
+
+static int patch_nvhdmi(struct hda_codec *codec)
+{
+        struct nvhdmi_spec *spec;
+
+        spec = kzalloc(sizeof(*spec), GFP_KERNEL);
+        if (spec == NULL)
+                return -ENOMEM;
+
+        codec->spec = spec;
+
+        spec->multiout.num_dacs = 0;      /* no analog */
+        spec->multiout.max_channels = 2;
+        spec->multiout.dig_out_nid = 0x4; /* NID for copying analog to digital,
+                                           * seems to be unused in pure-digital
+                                           * case. */
+
+        codec->patch_ops = nvhdmi_patch_ops;
+
+        return 0;
+}
+
+/*
+ * patch entries
+ */
+struct hda_codec_preset snd_hda_preset_nvhdmi[] = {
+        { .id = 0x10de0002, .name = "NVIDIA MCP78 HDMI", .patch = patch_nvhdmi },
+        { .id = 0x10de0007, .name = "NVIDIA MCP7A HDMI", .patch = patch_nvhdmi },
+        {} /* terminator */
+};