sound/pci/hda/patch_atihdmi.c

   1 /*
   2  * Universal Interface for Intel High Definition Audio Codec
   3  *
   4  * HD audio interface patch for ATI HDMI codecs
   5  *
   6  * Copyright (c) 2006 ATI Technologies Inc.
   7  *
   8  *
   9  *  This driver is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This driver is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  22  */
  23
  24 #include <linux/init.h>
  25 #include <linux/delay.h>
  26 #include <linux/slab.h>
  27 #include <sound/core.h>
  28 #include "hda_codec.h"
  29 #include "hda_local.h"
  30
  31 struct atihdmi_spec {
  32         struct hda_multi_out multiout;
  33
  34         struct hda_pcm pcm_rec;
  35 };
  36
  37 static struct hda_verb atihdmi_basic_init[] = {
  38         /* enable digital output on pin widget */
  39         { 0x03, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT },
  40         {} /* terminator */
  41 };
  42
  43 /*
  44  * Controls
  45  */
  46 static int atihdmi_build_controls(struct hda_codec *codec)
  47 {
  48         struct atihdmi_spec *spec = codec->spec;
  49         int err;
  50
  51         err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);
  52         if (err < 0)
  53                 return err;
  54
  55         return 0;
  56 }
  57
  58 static int atihdmi_init(struct hda_codec *codec)
  59 {
  60         snd_hda_sequence_write(codec, atihdmi_basic_init);
  61         return 0;
  62 }
  63
  64 /*
  65  * Digital out
  66  */
  67 static int atihdmi_dig_playback_pcm_open(struct hda_pcm_stream *hinfo,
  68                                      struct hda_codec *codec,
  69                                      struct snd_pcm_substream *substream)
  70 {
  71         struct atihdmi_spec *spec = codec->spec;
  72         return snd_hda_multi_out_dig_open(codec, &spec->multiout);
  73 }
  74
  75 static int atihdmi_dig_playback_pcm_close(struct hda_pcm_stream *hinfo,
  76                                       struct hda_codec *codec,
  77                                       struct snd_pcm_substream *substream)
  78 {
  79         struct atihdmi_spec *spec = codec->spec;
  80         return snd_hda_multi_out_dig_close(codec, &spec->multiout);
  81 }
  82
  83 static int atihdmi_dig_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
  84                                             struct hda_codec *codec,
  85                                             unsigned int stream_tag,
  86                                             unsigned int format,
  87                                             struct snd_pcm_substream *substream)
  88 {
  89         struct atihdmi_spec *spec = codec->spec;
  90         return snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
  91                                              format, substream);
  92 }
  93
  94 static struct hda_pcm_stream atihdmi_pcm_digital_playback = {
  95         .substreams = 1,
  96         .channels_min = 2,
  97         .channels_max = 2,
  98         .nid = 0x2, /* NID to query formats and rates and setup streams */
  99         .ops = {
 100                 .open = atihdmi_dig_playback_pcm_open,
 101                 .close = atihdmi_dig_playback_pcm_close,
 102                 .prepare = atihdmi_dig_playback_pcm_prepare
 103         },
 104 };
 105
 106 static int atihdmi_build_pcms(struct hda_codec *codec)
 107 {
 108         struct atihdmi_spec *spec = codec->spec;
 109         struct hda_pcm *info = &spec->pcm_rec;
 110
 111         codec->num_pcms = 1;
 112         codec->pcm_info = info;
 113
 114         info->name = "ATI HDMI";
 115         info->stream[SNDRV_PCM_STREAM_PLAYBACK] = atihdmi_pcm_digital_playback;
 116
 117         return 0;
 118 }
 119
 120 static void atihdmi_free(struct hda_codec *codec)
 121 {
 122         kfree(codec->spec);
 123 }
 124
 125 static struct hda_codec_ops atihdmi_patch_ops = {
 126         .build_controls = atihdmi_build_controls,
 127         .build_pcms = atihdmi_build_pcms,
 128         .init = atihdmi_init,
 129         .free = atihdmi_free,
 130 };
 131
 132 static int patch_atihdmi(struct hda_codec *codec)
 133 {
 134         struct atihdmi_spec *spec;
 135
 136         spec = kzalloc(sizeof(*spec), GFP_KERNEL);
 137         if (spec == NULL)
 138                 return -ENOMEM;
 139
 140         codec->spec = spec;
 141
 142         spec->multiout.num_dacs = 0;      /* no analog */
 143         spec->multiout.max_channels = 2;
 144         spec->multiout.dig_out_nid = 0x2; /* NID for copying analog to digital,
 145                                            * seems to be unused in pure-digital
 146                                            * case. */
 147
 148         codec->patch_ops = atihdmi_patch_ops;
 149
 150         return 0;
 151 }
 152
 153 /*
 154  * patch entries
 155  */
 156 struct hda_codec_preset snd_hda_preset_atihdmi[] = {
 157         { .id = 0x1002793c, .name = "ATI RS600 HDMI", .patch = patch_atihdmi },
 158         { .id = 0x10027919, .name = "ATI RS600 HDMI", .patch = patch_atihdmi },
 159         { .id = 0x1002791a, .name = "ATI RS690/780 HDMI", .patch = patch_atihdmi },
 160         { .id = 0x1002aa01, .name = "ATI R6xx HDMI", .patch = patch_atihdmi },
 161         {} /* terminator */
 162 };