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
  32 struct nvhdmi_spec {
  33         struct hda_multi_out multiout;
  34
  35         struct hda_pcm pcm_rec;
  36 };
  37
  38 static struct hda_verb nvhdmi_basic_init[] = {
  39         /* enable digital output on pin widget */
  40         { 0x05, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT },
  41         {} /* terminator */
  42 };
  43
  44 /*
  45  * Controls
  46  */
  47 static int nvhdmi_build_controls(struct hda_codec *codec)
  48 {
  49         struct nvhdmi_spec *spec = codec->spec;
  50         int err;
  51
  52         err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);
  53         if (err < 0)
  54                 return err;
  55
  56         return 0;
  57 }
  58
  59 static int nvhdmi_init(struct hda_codec *codec)
  60 {
  61         snd_hda_sequence_write(codec, nvhdmi_basic_init);
  62         return 0;
  63 }
  64
  65 /*
  66  * Digital out
  67  */
  68 static int nvhdmi_dig_playback_pcm_open(struct hda_pcm_stream *hinfo,
  69                                      struct hda_codec *codec,
  70                                      struct snd_pcm_substream *substream)
  71 {
  72         struct nvhdmi_spec *spec = codec->spec;
  73         return snd_hda_multi_out_dig_open(codec, &spec->multiout);
  74 }
  75
  76 static int nvhdmi_dig_playback_pcm_close(struct hda_pcm_stream *hinfo,
  77                                       struct hda_codec *codec,
  78                                       struct snd_pcm_substream *substream)
  79 {
  80         struct nvhdmi_spec *spec = codec->spec;
  81         return snd_hda_multi_out_dig_close(codec, &spec->multiout);
  82 }
  83
  84 static int nvhdmi_dig_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
  85                                             struct hda_codec *codec,
  86                                             unsigned int stream_tag,
  87                                             unsigned int format,
  88                                             struct snd_pcm_substream *substream)
  89 {
  90         struct nvhdmi_spec *spec = codec->spec;
  91         return snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
  92                                              format, substream);
  93 }
  94
  95 static struct hda_pcm_stream nvhdmi_pcm_digital_playback = {
  96         .substreams = 1,
  97         .channels_min = 2,
  98         .channels_max = 2,
  99         .nid = 0x4, /* NID to query formats and rates and setup streams */
 100         .rates = SNDRV_PCM_RATE_48000,
 101         .maxbps = 16,
 102         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 103         .ops = {
 104                 .open = nvhdmi_dig_playback_pcm_open,
 105                 .close = nvhdmi_dig_playback_pcm_close,
 106                 .prepare = nvhdmi_dig_playback_pcm_prepare
 107         },
 108 };
 109
 110 static int nvhdmi_build_pcms(struct hda_codec *codec)
 111 {
 112         struct nvhdmi_spec *spec = codec->spec;
 113         struct hda_pcm *info = &spec->pcm_rec;
 114
 115         codec->num_pcms = 1;
 116         codec->pcm_info = info;
 117
 118         info->name = "NVIDIA HDMI";
 119         info->pcm_type = HDA_PCM_TYPE_HDMI;
 120         info->stream[SNDRV_PCM_STREAM_PLAYBACK] = nvhdmi_pcm_digital_playback;
 121
 122         return 0;
 123 }
 124
 125 static void nvhdmi_free(struct hda_codec *codec)
 126 {
 127         kfree(codec->spec);
 128 }
 129
 130 static struct hda_codec_ops nvhdmi_patch_ops = {
 131         .build_controls = nvhdmi_build_controls,
 132         .build_pcms = nvhdmi_build_pcms,
 133         .init = nvhdmi_init,
 134         .free = nvhdmi_free,
 135 };
 136
 137 static int patch_nvhdmi(struct hda_codec *codec)
 138 {
 139         struct nvhdmi_spec *spec;
 140
 141         spec = kzalloc(sizeof(*spec), GFP_KERNEL);
 142         if (spec == NULL)
 143                 return -ENOMEM;
 144
 145         codec->spec = spec;
 146
 147         spec->multiout.num_dacs = 0;      /* no analog */
 148         spec->multiout.max_channels = 2;
 149         spec->multiout.dig_out_nid = 0x4; /* NID for copying analog to digital,
 150                                            * seems to be unused in pure-digital
 151                                            * case. */
 152
 153         codec->patch_ops = nvhdmi_patch_ops;
 154
 155         return 0;
 156 }
 157
 158 /*
 159  * patch entries
 160  */
 161 struct hda_codec_preset snd_hda_preset_nvhdmi[] = {
 162         { .id = 0x10de0002, .name = "NVIDIA MCP78 HDMI", .patch = patch_nvhdmi },
 163         { .id = 0x10de0007, .name = "NVIDIA MCP7A HDMI", .patch = patch_nvhdmi },
 164         {} /* terminator */
 165 };