225 lines
5.9 KiB
C
225 lines
5.9 KiB
C
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/*
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* Universal Interface for Intel High Definition Audio Codec
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*
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* HD audio interface patch for ATI HDMI codecs
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*
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* Copyright (c) 2006 ATI Technologies Inc.
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*
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*
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* This driver is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This driver is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include "hda_codec.h"
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#include "hda_local.h"
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struct atihdmi_spec {
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struct hda_multi_out multiout;
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struct hda_pcm pcm_rec;
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};
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#define CVT_NID 0x02 /* audio converter */
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#define PIN_NID 0x03 /* HDMI output pin */
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static struct hda_verb atihdmi_basic_init[] = {
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/* enable digital output on pin widget */
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{ 0x03, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT },
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{} /* terminator */
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};
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/*
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* Controls
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*/
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static int atihdmi_build_controls(struct hda_codec *codec)
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{
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struct atihdmi_spec *spec = codec->spec;
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int err;
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err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);
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if (err < 0)
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return err;
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return 0;
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}
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static int atihdmi_init(struct hda_codec *codec)
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{
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snd_hda_sequence_write(codec, atihdmi_basic_init);
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/* SI codec requires to unmute the pin */
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if (get_wcaps(codec, PIN_NID) & AC_WCAP_OUT_AMP)
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snd_hda_codec_write(codec, PIN_NID, 0,
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AC_VERB_SET_AMP_GAIN_MUTE,
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AMP_OUT_UNMUTE);
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return 0;
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}
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/*
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* Digital out
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*/
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static int atihdmi_dig_playback_pcm_open(struct hda_pcm_stream *hinfo,
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struct hda_codec *codec,
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struct snd_pcm_substream *substream)
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{
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struct atihdmi_spec *spec = codec->spec;
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return snd_hda_multi_out_dig_open(codec, &spec->multiout);
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}
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static int atihdmi_dig_playback_pcm_close(struct hda_pcm_stream *hinfo,
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struct hda_codec *codec,
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struct snd_pcm_substream *substream)
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{
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struct atihdmi_spec *spec = codec->spec;
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return snd_hda_multi_out_dig_close(codec, &spec->multiout);
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}
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static int atihdmi_dig_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
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struct hda_codec *codec,
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unsigned int stream_tag,
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unsigned int format,
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struct snd_pcm_substream *substream)
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{
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struct atihdmi_spec *spec = codec->spec;
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int chans = substream->runtime->channels;
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int i, err;
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err = snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
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format, substream);
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if (err < 0)
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return err;
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snd_hda_codec_write(codec, CVT_NID, 0, AC_VERB_SET_CVT_CHAN_COUNT,
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chans - 1);
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/* FIXME: XXX */
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for (i = 0; i < chans; i++) {
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snd_hda_codec_write(codec, CVT_NID, 0,
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AC_VERB_SET_HDMI_CHAN_SLOT,
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(i << 4) | i);
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}
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return 0;
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}
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static struct hda_pcm_stream atihdmi_pcm_digital_playback = {
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.substreams = 1,
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.channels_min = 2,
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.channels_max = 2,
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.nid = CVT_NID, /* NID to query formats and rates and setup streams */
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.ops = {
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.open = atihdmi_dig_playback_pcm_open,
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.close = atihdmi_dig_playback_pcm_close,
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.prepare = atihdmi_dig_playback_pcm_prepare
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},
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};
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static int atihdmi_build_pcms(struct hda_codec *codec)
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{
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struct atihdmi_spec *spec = codec->spec;
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struct hda_pcm *info = &spec->pcm_rec;
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unsigned int chans;
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codec->num_pcms = 1;
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codec->pcm_info = info;
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info->name = "ATI HDMI";
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info->pcm_type = HDA_PCM_TYPE_HDMI;
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info->stream[SNDRV_PCM_STREAM_PLAYBACK] = atihdmi_pcm_digital_playback;
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/* FIXME: we must check ELD and change the PCM parameters dynamically
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*/
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chans = get_wcaps(codec, CVT_NID);
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chans = get_wcaps_channels(chans);
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info->stream[SNDRV_PCM_STREAM_PLAYBACK].channels_max = chans;
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return 0;
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}
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static void atihdmi_free(struct hda_codec *codec)
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{
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kfree(codec->spec);
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}
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static struct hda_codec_ops atihdmi_patch_ops = {
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.build_controls = atihdmi_build_controls,
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.build_pcms = atihdmi_build_pcms,
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.init = atihdmi_init,
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.free = atihdmi_free,
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};
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static int patch_atihdmi(struct hda_codec *codec)
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{
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struct atihdmi_spec *spec;
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spec = kzalloc(sizeof(*spec), GFP_KERNEL);
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if (spec == NULL)
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return -ENOMEM;
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codec->spec = spec;
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spec->multiout.num_dacs = 0; /* no analog */
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spec->multiout.max_channels = 2;
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/* NID for copying analog to digital,
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* seems to be unused in pure-digital
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* case.
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*/
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spec->multiout.dig_out_nid = CVT_NID;
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codec->patch_ops = atihdmi_patch_ops;
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return 0;
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}
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/*
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* patch entries
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*/
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static struct hda_codec_preset snd_hda_preset_atihdmi[] = {
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{ .id = 0x1002793c, .name = "RS600 HDMI", .patch = patch_atihdmi },
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{ .id = 0x10027919, .name = "RS600 HDMI", .patch = patch_atihdmi },
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{ .id = 0x1002791a, .name = "RS690/780 HDMI", .patch = patch_atihdmi },
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{ .id = 0x1002aa01, .name = "R6xx HDMI", .patch = patch_atihdmi },
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{ .id = 0x10951390, .name = "SiI1390 HDMI", .patch = patch_atihdmi },
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{ .id = 0x17e80047, .name = "Chrontel HDMI", .patch = patch_atihdmi },
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{} /* terminator */
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};
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MODULE_ALIAS("snd-hda-codec-id:1002793c");
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MODULE_ALIAS("snd-hda-codec-id:10027919");
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MODULE_ALIAS("snd-hda-codec-id:1002791a");
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MODULE_ALIAS("snd-hda-codec-id:1002aa01");
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MODULE_ALIAS("snd-hda-codec-id:10951390");
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MODULE_ALIAS("snd-hda-codec-id:17e80047");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("ATI HDMI HD-audio codec");
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static struct hda_codec_preset_list atihdmi_list = {
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.preset = snd_hda_preset_atihdmi,
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.owner = THIS_MODULE,
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};
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static int __init patch_atihdmi_init(void)
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{
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return snd_hda_add_codec_preset(&atihdmi_list);
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}
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static void __exit patch_atihdmi_exit(void)
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{
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snd_hda_delete_codec_preset(&atihdmi_list);
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}
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module_init(patch_atihdmi_init)
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module_exit(patch_atihdmi_exit)
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