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
32struct atihdmi_spec {
33	struct hda_multi_out multiout;
34
35	struct hda_pcm pcm_rec;
36};
37
38static 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 */
47static 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
59static 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 */
69static 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 */
81static 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
89static 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
97static 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
108static 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
120static 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
134static void atihdmi_free(struct hda_codec *codec)
135{
136	kfree(codec->spec);
137}
138
139static 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
149static 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 */
173struct 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};
179