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/*
* 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 */
};
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