sound/pci/hda/patch_nvhdmi.c

   1 /*
   2  * Universal Interface for Intel High Definition Audio Codec
   3  *
   4  * HD audio interface patch for NVIDIA HDMI codecs
   5  *
   6  * Copyright (c) 2008 NVIDIA Corp.  All rights reserved.
   7  * Copyright (c) 2008 Wei Ni <wni@nvidia.com>
   8  *
   9  *
  10  *  This driver is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This driver is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  */
  24
  25 #include <linux/init.h>
  26 #include <linux/delay.h>
  27 #include <linux/slab.h>
  28 #include <sound/core.h>
  29 #include "hda_codec.h"
  30 #include "hda_local.h"
  31 #include "hda_patch.h"
  32
  33 struct nvhdmi_spec {
  34         struct hda_multi_out multiout;
  35
  36         struct hda_pcm pcm_rec;
  37 };
  38
  39 static struct hda_verb nvhdmi_basic_init[] = {
  40         /* enable digital output on pin widget */
  41         { 0x05, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT },
  42         {} /* terminator */
  43 };
  44
  45 /*
  46  * Controls
  47  */
  48 static int nvhdmi_build_controls(struct hda_codec *codec)
  49 {
  50         struct nvhdmi_spec *spec = codec->spec;
  51         int err;
  52
  53         err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);
  54         if (err < 0)
  55                 return err;
  56
  57         return 0;
  58 }
  59
  60 static int nvhdmi_init(struct hda_codec *codec)
  61 {
  62         snd_hda_sequence_write(codec, nvhdmi_basic_init);
  63         return 0;
  64 }
  65
  66 /*
  67  * Digital out
  68  */
  69 static int nvhdmi_dig_playback_pcm_open(struct hda_pcm_stream *hinfo,
  70                                      struct hda_codec *codec,
  71                                      struct snd_pcm_substream *substream)
  72 {
  73         struct nvhdmi_spec *spec = codec->spec;
  74         return snd_hda_multi_out_dig_open(codec, &spec->multiout);
  75 }
  76
  77 static int nvhdmi_dig_playback_pcm_close(struct hda_pcm_stream *hinfo,
  78                                       struct hda_codec *codec,
  79                                       struct snd_pcm_substream *substream)
  80 {
  81         struct nvhdmi_spec *spec = codec->spec;
  82         return snd_hda_multi_out_dig_close(codec, &spec->multiout);
  83 }
  84
  85 static int nvhdmi_dig_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
  86                                             struct hda_codec *codec,
  87                                             unsigned int stream_tag,
  88                                             unsigned int format,
  89                                             struct snd_pcm_substream *substream)
  90 {
  91         struct nvhdmi_spec *spec = codec->spec;
  92         return snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
  93                                              format, substream);
  94 }
  95
  96 static struct hda_pcm_stream nvhdmi_pcm_digital_playback = {
  97         .substreams = 1,
  98         .channels_min = 2,
  99         .channels_max = 2,
 100         .nid = 0x4, /* NID to query formats and rates and setup streams */
 101         .rates = SNDRV_PCM_RATE_48000,
 102         .maxbps = 16,
 103         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 104         .ops = {
 105                 .open = nvhdmi_dig_playback_pcm_open,
 106                 .close = nvhdmi_dig_playback_pcm_close,
 107                 .prepare = nvhdmi_dig_playback_pcm_prepare
 108         },
 109 };
 110
 111 static int nvhdmi_build_pcms(struct hda_codec *codec)
 112 {
 113         struct nvhdmi_spec *spec = codec->spec;
 114         struct hda_pcm *info = &spec->pcm_rec;
 115
 116         codec->num_pcms = 1;
 117         codec->pcm_info = info;
 118
 119         info->name = "NVIDIA HDMI";
 120         info->pcm_type = HDA_PCM_TYPE_HDMI;
 121         info->stream[SNDRV_PCM_STREAM_PLAYBACK] = nvhdmi_pcm_digital_playback;
 122
 123         return 0;
 124 }
 125
 126 static void nvhdmi_free(struct hda_codec *codec)
 127 {
 128         kfree(codec->spec);
 129 }
 130
 131 static struct hda_codec_ops nvhdmi_patch_ops = {
 132         .build_controls = nvhdmi_build_controls,
 133         .build_pcms = nvhdmi_build_pcms,
 134         .init = nvhdmi_init,
 135         .free = nvhdmi_free,
 136 };
 137
 138 static int patch_nvhdmi(struct hda_codec *codec)
 139 {
 140         struct nvhdmi_spec *spec;
 141
 142         spec = kzalloc(sizeof(*spec), GFP_KERNEL);
 143         if (spec == NULL)
 144                 return -ENOMEM;
 145
 146         codec->spec = spec;
 147
 148         spec->multiout.num_dacs = 0;      /* no analog */
 149         spec->multiout.max_channels = 2;
 150         spec->multiout.dig_out_nid = 0x4; /* NID for copying analog to digital,
 151                                            * seems to be unused in pure-digital
 152                                            * case. */
 153
 154         codec->patch_ops = nvhdmi_patch_ops;
 155
 156         return 0;
 157 }
 158
 159 /*
 160  * patch entries
 161  */
 162 struct hda_codec_preset snd_hda_preset_nvhdmi[] = {
 163         { .id = 0x10de0002, .name = "NVIDIA MCP78 HDMI", .patch = patch_nvhdmi },
 164         { .id = 0x10de0007, .name = "NVIDIA MCP7A HDMI", .patch = patch_nvhdmi },
 165         {} /* terminator */
 166 };