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