/* * Universal Interface for Intel High Definition Audio Codec * * HD audio interface patch for ATI HDMI codecs * * Copyright (c) 2006 ATI Technologies Inc. * * *  This driver is free software; you can redistribute it and/or modify *  it under the terms of the GNU General Public License as published by *  the Free Software Foundation; either version 2 of the License, or *  (at your option) any later version. * *  This driver is distributed in the hope that it will be useful, *  but WITHOUT ANY WARRANTY; without even the implied warranty of *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the *  GNU General Public License for more details. * *  You should have received a copy of the GNU General Public License *  along with this program; if not, write to the Free Software *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA */#include <sound/driver.h>#include <linux/init.h>#include <linux/delay.h>#include <linux/slab.h>#include <sound/core.h>#include "hda_codec.h"#include "hda_local.h"struct atihdmi_spec {	struct hda_multi_out multiout;	struct hda_pcm pcm_rec;};static struct hda_verb atihdmi_basic_init[] = {	/* enable digital output on pin widget */	{ 0x03, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT },	{} /* terminator */};/* * Controls */static int atihdmi_build_controls(struct hda_codec *codec){	struct atihdmi_spec *spec = codec->spec;	int err;	err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);	if (err < 0)		return err;	return 0;}static int atihdmi_init(struct hda_codec *codec){	snd_hda_sequence_write(codec, atihdmi_basic_init);	return 0;}/* * Digital out */static int atihdmi_dig_playback_pcm_open(struct hda_pcm_stream *hinfo,				     struct hda_codec *codec,				     struct snd_pcm_substream *substream){	struct atihdmi_spec *spec = codec->spec;	return snd_hda_multi_out_dig_open(codec, &spec->multiout);}static int atihdmi_dig_playback_pcm_close(struct hda_pcm_stream *hinfo,				      struct hda_codec *codec,				      struct snd_pcm_substream *substream){	struct atihdmi_spec *spec = codec->spec;	return snd_hda_multi_out_dig_close(codec, &spec->multiout);}static int atihdmi_dig_playback_pcm_prepare(struct hda_pcm_stream *hinfo,					    struct hda_codec *codec,					    unsigned int stream_tag,					    unsigned int format,					    struct snd_pcm_substream *substream){	struct atihdmi_spec *spec = codec->spec;	return snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,					     format, substream);}static struct hda_pcm_stream atihdmi_pcm_digital_playback = {	.substreams = 1,	.channels_min = 2,	.channels_max = 2,	.nid = 0x2, /* NID to query formats and rates and setup streams */	.ops = {		.open = atihdmi_dig_playback_pcm_open,		.close = atihdmi_dig_playback_pcm_close,		.prepare = atihdmi_dig_playback_pcm_prepare	},};static int atihdmi_build_pcms(struct hda_codec *codec){	struct atihdmi_spec *spec = codec->spec;	struct hda_pcm *info = &spec->pcm_rec;	codec->num_pcms = 1;	codec->pcm_info = info;	info->name = "ATI HDMI";	info->stream[SNDRV_PCM_STREAM_PLAYBACK] = atihdmi_pcm_digital_playback;	return 0;}static void atihdmi_free(struct hda_codec *codec){	kfree(codec->spec);}static struct hda_codec_ops atihdmi_patch_ops = {	.build_controls = atihdmi_build_controls,	.build_pcms = atihdmi_build_pcms,	.init = atihdmi_init,	.free = atihdmi_free,};static int patch_atihdmi(struct hda_codec *codec){	struct atihdmi_spec *spec;	spec = kzalloc(sizeof(*spec), GFP_KERNEL);	if (spec == NULL)		return -ENOMEM;	codec->spec = spec;	spec->multiout.num_dacs = 0;	  /* no analog */	spec->multiout.max_channels = 2;	spec->multiout.dig_out_nid = 0x2; /* NID for copying analog to digital,					   * seems to be unused in pure-digital					   * case. */	codec->patch_ops = atihdmi_patch_ops;	return 0;}/* * patch entries */struct hda_codec_preset snd_hda_preset_atihdmi[] = {	{ .id = 0x1002793c, .name = "ATI RS600 HDMI", .patch = patch_atihdmi },	{ .id = 0x10027919, .name = "ATI RS600 HDMI", .patch = patch_atihdmi },	{ .id = 0x1002791a, .name = "ATI RS690/780 HDMI", .patch = patch_atihdmi },	{ .id = 0x1002aa01, .name = "ATI R600 HDMI", .patch = patch_atihdmi },	{} /* terminator */};