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 <sound/driver.h>
  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 atihdmi_spec {
  33         struct hda_multi_out multiout;
  34
  35         struct hda_pcm pcm_rec;
  36 };
  37
  38 static struct hda_verb atihdmi_basic_init[] = {
  39         /* enable digital output on pin widget */
  40         { 0x03, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT },
  41         {} /* terminator */
  42 };
  43
  44 /*
  45  * Controls
  46  */
  47 static int atihdmi_build_controls(struct hda_codec *codec)
  48 {
  49         struct atihdmi_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 atihdmi_init(struct hda_codec *codec)
  60 {
  61         snd_hda_sequence_write(codec, atihdmi_basic_init);
  62         return 0;
  63 }
  64
  65 /*
  66  * Digital out
  67  */
  68 static int atihdmi_dig_playback_pcm_open(struct hda_pcm_stream *hinfo,
  69                                      struct hda_codec *codec,
  70                                      struct snd_pcm_substream *substream)
  71 {
  72         struct atihdmi_spec *spec = codec->spec;
  73         return snd_hda_multi_out_dig_open(codec, &spec->multiout);
  74 }
  75
  76 static int atihdmi_dig_playback_pcm_close(struct hda_pcm_stream *hinfo,
  77                                       struct hda_codec *codec,
  78                                       struct snd_pcm_substream *substream)
  79 {
  80         struct atihdmi_spec *spec = codec->spec;
  81         return snd_hda_multi_out_dig_close(codec, &spec->multiout);
  82 }
  83
  84 static int atihdmi_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 atihdmi_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 atihdmi_pcm_digital_playback = {
  96         .substreams = 1,
  97         .channels_min = 2,
  98         .channels_max = 2,
  99         .nid = 0x2, /* NID to query formats and rates and setup streams */
 100         .ops = {
 101                 .open = atihdmi_dig_playback_pcm_open,
 102                 .close = atihdmi_dig_playback_pcm_close,
 103                 .prepare = atihdmi_dig_playback_pcm_prepare
 104         },
 105 };
 106
 107 static int atihdmi_build_pcms(struct hda_codec *codec)
 108 {
 109         struct atihdmi_spec *spec = codec->spec;
 110         struct hda_pcm *info = &spec->pcm_rec;
 111
 112         codec->num_pcms = 1;
 113         codec->pcm_info = info;
 114
 115         info->name = "ATI HDMI";
 116         info->stream[SNDRV_PCM_STREAM_PLAYBACK] = atihdmi_pcm_digital_playback;
 117
 118         return 0;
 119 }
 120
 121 static void atihdmi_free(struct hda_codec *codec)
 122 {
 123         kfree(codec->spec);
 124 }
 125
 126 static struct hda_codec_ops atihdmi_patch_ops = {
 127         .build_controls = atihdmi_build_controls,
 128         .build_pcms = atihdmi_build_pcms,
 129         .init = atihdmi_init,
 130         .free = atihdmi_free,
 131 };
 132
 133 static int patch_atihdmi(struct hda_codec *codec)
 134 {
 135         struct atihdmi_spec *spec;
 136
 137         spec = kzalloc(sizeof(*spec), GFP_KERNEL);
 138         if (spec == NULL)
 139                 return -ENOMEM;
 140
 141         codec->spec = spec;
 142
 143         spec->multiout.num_dacs = 0;      /* no analog */
 144         spec->multiout.max_channels = 2;
 145         spec->multiout.dig_out_nid = 0x2; /* NID for copying analog to digital,
 146                                            * seems to be unused in pure-digital
 147                                            * case. */
 148
 149         codec->patch_ops = atihdmi_patch_ops;
 150
 151         return 0;
 152 }
 153
 154 /*
 155  * patch entries
 156  */
 157 struct hda_codec_preset snd_hda_preset_atihdmi[] = {
 158         { .id = 0x1002793c, .name = "ATI RS600 HDMI", .patch = patch_atihdmi },
 159         { .id = 0x10027919, .name = "ATI RS600 HDMI", .patch = patch_atihdmi },
 160         { .id = 0x1002791a, .name = "ATI RS690/780 HDMI", .patch = patch_atihdmi },
 161         { .id = 0x1002aa01, .name = "ATI R600 HDMI", .patch = patch_atihdmi },
 162         {} /* terminator */
 163 };