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 <linux/pci.h>
  29 #include <sound/core.h>
  30 #include "hda_codec.h"
  31 #include "hda_local.h"
  32
  33 struct atihdmi_spec {
  34         struct hda_multi_out multiout;
  35
  36         struct hda_pcm pcm_rec;
  37 };
  38
  39 static struct hda_verb atihdmi_basic_init[] = {
  40         /* enable digital output on pin widget */
  41         { 0x03, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT },
  42         {} /* terminator */
  43 };
  44
  45 /*
  46  * Controls
  47  */
  48 static int atihdmi_build_controls(struct hda_codec *codec)
  49 {
  50         struct atihdmi_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 atihdmi_init(struct hda_codec *codec)
  61 {
  62         snd_hda_sequence_write(codec, atihdmi_basic_init);
  63         return 0;
  64 }
  65
  66 #ifdef CONFIG_PM
  67 /*
  68  * resume
  69  */
  70 static int atihdmi_resume(struct hda_codec *codec)
  71 {
  72         atihdmi_init(codec);
  73         snd_hda_resume_spdif_out(codec);
  74
  75         return 0;
  76 }
  77 #endif
  78
  79 /*
  80  * Digital out
  81  */
  82 static int atihdmi_dig_playback_pcm_open(struct hda_pcm_stream *hinfo,
  83                                      struct hda_codec *codec,
  84                                      struct snd_pcm_substream *substream)
  85 {
  86         struct atihdmi_spec *spec = codec->spec;
  87         return snd_hda_multi_out_dig_open(codec, &spec->multiout);
  88 }
  89
  90 static int atihdmi_dig_playback_pcm_close(struct hda_pcm_stream *hinfo,
  91                                       struct hda_codec *codec,
  92                                       struct snd_pcm_substream *substream)
  93 {
  94         struct atihdmi_spec *spec = codec->spec;
  95         return snd_hda_multi_out_dig_close(codec, &spec->multiout);
  96 }
  97
  98 static struct hda_pcm_stream atihdmi_pcm_digital_playback = {
  99         .substreams = 1,
 100         .channels_min = 2,
 101         .channels_max = 2,
 102         .nid = 0x2, /* NID to query formats and rates and setup streams */
 103         .ops = {
 104                 .open = atihdmi_dig_playback_pcm_open,
 105                 .close = atihdmi_dig_playback_pcm_close
 106         },
 107 };
 108
 109 static int atihdmi_build_pcms(struct hda_codec *codec)
 110 {
 111         struct atihdmi_spec *spec = codec->spec;
 112         struct hda_pcm *info = &spec->pcm_rec;
 113
 114         codec->num_pcms = 1;
 115         codec->pcm_info = info;
 116
 117         info->name = "ATI HDMI";
 118         info->stream[SNDRV_PCM_STREAM_PLAYBACK] = atihdmi_pcm_digital_playback;
 119
 120         return 0;
 121 }
 122
 123 static void atihdmi_free(struct hda_codec *codec)
 124 {
 125         kfree(codec->spec);
 126 }
 127
 128 static struct hda_codec_ops atihdmi_patch_ops = {
 129         .build_controls = atihdmi_build_controls,
 130         .build_pcms = atihdmi_build_pcms,
 131         .init = atihdmi_init,
 132         .free = atihdmi_free,
 133 #ifdef CONFIG_PM
 134         .resume = atihdmi_resume,
 135 #endif
 136 };
 137
 138 static int patch_atihdmi(struct hda_codec *codec)
 139 {
 140         struct atihdmi_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 = 0x2; /* NID for copying analog to digital,
 151                                            * seems to be unused in pure-digital
 152                                            * case. */
 153
 154         codec->patch_ops = atihdmi_patch_ops;
 155
 156         return 0;
 157 }
 158
 159 /*
 160  * patch entries
 161  */
 162 struct hda_codec_preset snd_hda_preset_atihdmi[] = {
 163         { .id = 0x1002793c, .name = "ATI RS600 HDMI", .patch = patch_atihdmi },
 164         {} /* terminator */
 165 };