release/src-rt-6.x/linux/linux-2.6/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 #ifdef CONFIG_PM
  66 /*
  67  * resume
  68  */
  69 static int atihdmi_resume(struct hda_codec *codec)
  70 {
  71         atihdmi_init(codec);
  72         snd_hda_resume_spdif_out(codec);
  73
  74         return 0;
  75 }
  76 #endif
  77
  78 /*
  79  * Digital out
  80  */
  81 static int atihdmi_dig_playback_pcm_open(struct hda_pcm_stream *hinfo,
  82                                      struct hda_codec *codec,
  83                                      struct snd_pcm_substream *substream)
  84 {
  85         struct atihdmi_spec *spec = codec->spec;
  86         return snd_hda_multi_out_dig_open(codec, &spec->multiout);
  87 }
  88
  89 static int atihdmi_dig_playback_pcm_close(struct hda_pcm_stream *hinfo,
  90                                       struct hda_codec *codec,
  91                                       struct snd_pcm_substream *substream)
  92 {
  93         struct atihdmi_spec *spec = codec->spec;
  94         return snd_hda_multi_out_dig_close(codec, &spec->multiout);
  95 }
  96
  97 static int atihdmi_dig_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
  98                                             struct hda_codec *codec,
  99                                             unsigned int stream_tag,
 100                                             unsigned int format,
 101                                             struct snd_pcm_substream *substream)
 102 {
 103         struct atihdmi_spec *spec = codec->spec;
 104         return snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
 105                                              format, substream);
 106 }
 107
 108 static struct hda_pcm_stream atihdmi_pcm_digital_playback = {
 109         .substreams = 1,
 110         .channels_min = 2,
 111         .channels_max = 2,
 112         .nid = 0x2, /* NID to query formats and rates and setup streams */
 113         .ops = {
 114                 .open = atihdmi_dig_playback_pcm_open,
 115                 .close = atihdmi_dig_playback_pcm_close,
 116                 .prepare = atihdmi_dig_playback_pcm_prepare
 117         },
 118 };
 119
 120 static int atihdmi_build_pcms(struct hda_codec *codec)
 121 {
 122         struct atihdmi_spec *spec = codec->spec;
 123         struct hda_pcm *info = &spec->pcm_rec;
 124
 125         codec->num_pcms = 1;
 126         codec->pcm_info = info;
 127
 128         info->name = "ATI HDMI";
 129         info->stream[SNDRV_PCM_STREAM_PLAYBACK] = atihdmi_pcm_digital_playback;
 130
 131         return 0;
 132 }
 133
 134 static void atihdmi_free(struct hda_codec *codec)
 135 {
 136         kfree(codec->spec);
 137 }
 138
 139 static struct hda_codec_ops atihdmi_patch_ops = {
 140         .build_controls = atihdmi_build_controls,
 141         .build_pcms = atihdmi_build_pcms,
 142         .init = atihdmi_init,
 143         .free = atihdmi_free,
 144 #ifdef CONFIG_PM
 145         .resume = atihdmi_resume,
 146 #endif
 147 };
 148
 149 static int patch_atihdmi(struct hda_codec *codec)
 150 {
 151         struct atihdmi_spec *spec;
 152
 153         spec = kzalloc(sizeof(*spec), GFP_KERNEL);
 154         if (spec == NULL)
 155                 return -ENOMEM;
 156
 157         codec->spec = spec;
 158
 159         spec->multiout.num_dacs = 0;      /* no analog */
 160         spec->multiout.max_channels = 2;
 161         spec->multiout.dig_out_nid = 0x2; /* NID for copying analog to digital,
 162                                            * seems to be unused in pure-digital
 163                                            * case. */
 164
 165         codec->patch_ops = atihdmi_patch_ops;
 166
 167         return 0;
 168 }
 169
 170 /*
 171  * patch entries
 172  */
 173 struct hda_codec_preset snd_hda_preset_atihdmi[] = {
 174         { .id = 0x1002793c, .name = "ATI RS600 HDMI", .patch = patch_atihdmi },
 175         { .id = 0x1002791a, .name = "ATI RS690/780 HDMI", .patch = patch_atihdmi },
 176         { .id = 0x1002aa01, .name = "ATI R600 HDMI", .patch = patch_atihdmi },
 177         {} /* terminator */
 178 };