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 #define CVT_NID         0x02    /* audio converter */
  38 #define PIN_NID         0x03    /* HDMI output pin */
  39
  40 static struct hda_verb atihdmi_basic_init[] = {
  41         /* enable digital output on pin widget */
  42         { 0x03, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT },
  43         {} /* terminator */
  44 };
  45
  46 /*
  47  * Controls
  48  */
  49 static int atihdmi_build_controls(struct hda_codec *codec)
  50 {
  51         struct atihdmi_spec *spec = codec->spec;
  52         int err;
  53
  54         err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);
  55         if (err < 0)
  56                 return err;
  57
  58         return 0;
  59 }
  60
  61 static int atihdmi_init(struct hda_codec *codec)
  62 {
  63         snd_hda_sequence_write(codec, atihdmi_basic_init);
  64         /* SI codec requires to unmute the pin */
  65         if (get_wcaps(codec, PIN_NID) & AC_WCAP_OUT_AMP)
  66                 snd_hda_codec_write(codec, PIN_NID, 0,
  67                                     AC_VERB_SET_AMP_GAIN_MUTE,
  68                                     AMP_OUT_UNMUTE);
  69         return 0;
  70 }
  71
  72 /*
  73  * Digital out
  74  */
  75 static int atihdmi_dig_playback_pcm_open(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_open(codec, &spec->multiout);
  81 }
  82
  83 static int atihdmi_dig_playback_pcm_close(struct hda_pcm_stream *hinfo,
  84                                       struct hda_codec *codec,
  85                                       struct snd_pcm_substream *substream)
  86 {
  87         struct atihdmi_spec *spec = codec->spec;
  88         return snd_hda_multi_out_dig_close(codec, &spec->multiout);
  89 }
  90
  91 static int atihdmi_dig_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
  92                                             struct hda_codec *codec,
  93                                             unsigned int stream_tag,
  94                                             unsigned int format,
  95                                             struct snd_pcm_substream *substream)
  96 {
  97         struct atihdmi_spec *spec = codec->spec;
  98         int chans = substream->runtime->channels;
  99         int i, err;
 100
 101         err = snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
 102                                             format, substream);
 103         if (err < 0)
 104                 return err;
 105         snd_hda_codec_write(codec, CVT_NID, 0, AC_VERB_SET_CVT_CHAN_COUNT,
 106                             chans - 1);
 107         /* FIXME: XXX */
 108         for (i = 0; i < chans; i++) {
 109                 snd_hda_codec_write(codec, CVT_NID, 0,
 110                                     AC_VERB_SET_HDMI_CHAN_SLOT,
 111                                     (i << 4) | i);
 112         }
 113         return 0;
 114 }
 115
 116 static struct hda_pcm_stream atihdmi_pcm_digital_playback = {
 117         .substreams = 1,
 118         .channels_min = 2,
 119         .channels_max = 2,
 120         .nid = CVT_NID, /* NID to query formats and rates and setup streams */
 121         .ops = {
 122                 .open = atihdmi_dig_playback_pcm_open,
 123                 .close = atihdmi_dig_playback_pcm_close,
 124                 .prepare = atihdmi_dig_playback_pcm_prepare
 125         },
 126 };
 127
 128 static int atihdmi_build_pcms(struct hda_codec *codec)
 129 {
 130         struct atihdmi_spec *spec = codec->spec;
 131         struct hda_pcm *info = &spec->pcm_rec;
 132         unsigned int chans;
 133
 134         codec->num_pcms = 1;
 135         codec->pcm_info = info;
 136
 137         info->name = "ATI HDMI";
 138         info->pcm_type = HDA_PCM_TYPE_HDMI;
 139         info->stream[SNDRV_PCM_STREAM_PLAYBACK] = atihdmi_pcm_digital_playback;
 140
 141         /* FIXME: we must check ELD and change the PCM parameters dynamically
 142          */
 143         chans = get_wcaps(codec, CVT_NID);
 144         chans = (chans & AC_WCAP_CHAN_CNT_EXT) >> 13;
 145         chans = ((chans << 1) | 1) + 1;
 146         info->stream[SNDRV_PCM_STREAM_PLAYBACK].channels_max = chans;
 147
 148         return 0;
 149 }
 150
 151 static void atihdmi_free(struct hda_codec *codec)
 152 {
 153         kfree(codec->spec);
 154 }
 155
 156 static struct hda_codec_ops atihdmi_patch_ops = {
 157         .build_controls = atihdmi_build_controls,
 158         .build_pcms = atihdmi_build_pcms,
 159         .init = atihdmi_init,
 160         .free = atihdmi_free,
 161 };
 162
 163 static int patch_atihdmi(struct hda_codec *codec)
 164 {
 165         struct atihdmi_spec *spec;
 166
 167         spec = kzalloc(sizeof(*spec), GFP_KERNEL);
 168         if (spec == NULL)
 169                 return -ENOMEM;
 170
 171         codec->spec = spec;
 172
 173         spec->multiout.num_dacs = 0;      /* no analog */
 174         spec->multiout.max_channels = 2;
 175         /* NID for copying analog to digital,
 176          * seems to be unused in pure-digital
 177          * case.
 178          */
 179         spec->multiout.dig_out_nid = CVT_NID;
 180
 181         codec->patch_ops = atihdmi_patch_ops;
 182
 183         return 0;
 184 }
 185
 186 /*
 187  * patch entries
 188  */
 189 static struct hda_codec_preset snd_hda_preset_atihdmi[] = {
 190         { .id = 0x1002793c, .name = "ATI RS600 HDMI", .patch = patch_atihdmi },
 191         { .id = 0x10027919, .name = "ATI RS600 HDMI", .patch = patch_atihdmi },
 192         { .id = 0x1002791a, .name = "ATI RS690/780 HDMI", .patch = patch_atihdmi },
 193         { .id = 0x1002aa01, .name = "ATI R6xx HDMI", .patch = patch_atihdmi },
 194         { .id = 0x10951390, .name = "SiI1390 HDMI", .patch = patch_atihdmi },
 195         { .id = 0x17e80047, .name = "Chrontel HDMI",  .patch = patch_atihdmi },
 196         {} /* terminator */
 197 };
 198
 199 MODULE_ALIAS("snd-hda-codec-id:1002793c");
 200 MODULE_ALIAS("snd-hda-codec-id:10027919");
 201 MODULE_ALIAS("snd-hda-codec-id:1002791a");
 202 MODULE_ALIAS("snd-hda-codec-id:1002aa01");
 203 MODULE_ALIAS("snd-hda-codec-id:10951390");
 204 MODULE_ALIAS("snd-hda-codec-id:17e80047");
 205
 206 MODULE_LICENSE("GPL");
 207 MODULE_DESCRIPTION("ATI HDMI HD-audio codec");
 208
 209 static struct hda_codec_preset_list atihdmi_list = {
 210         .preset = snd_hda_preset_atihdmi,
 211         .owner = THIS_MODULE,
 212 };
 213
 214 static int __init patch_atihdmi_init(void)
 215 {
 216         return snd_hda_add_codec_preset(&atihdmi_list);
 217 }
 218
 219 static void __exit patch_atihdmi_exit(void)
 220 {
 221         snd_hda_delete_codec_preset(&atihdmi_list);
 222 }
 223
 224 module_init(patch_atihdmi_init)
 225 module_exit(patch_atihdmi_exit)