| /* |
| * Universal Interface for Intel High Definition Audio Codec |
| * |
| * HD audio interface patch for NVIDIA HDMI codecs |
| * |
| * Copyright (c) 2008 NVIDIA Corp. All rights reserved. |
| * Copyright (c) 2008 Wei Ni <wni@nvidia.com> |
| * |
| * |
| * 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 <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/slab.h> |
| #include <sound/core.h> |
| #include "hda_codec.h" |
| #include "hda_local.h" |
| |
| struct nvhdmi_spec { |
| struct hda_multi_out multiout; |
| |
| struct hda_pcm pcm_rec; |
| }; |
| |
| static struct hda_verb nvhdmi_basic_init[] = { |
| /* enable digital output on pin widget */ |
| { 0x05, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT }, |
| {} /* terminator */ |
| }; |
| |
| /* |
| * Controls |
| */ |
| static int nvhdmi_build_controls(struct hda_codec *codec) |
| { |
| struct nvhdmi_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 nvhdmi_init(struct hda_codec *codec) |
| { |
| snd_hda_sequence_write(codec, nvhdmi_basic_init); |
| return 0; |
| } |
| |
| /* |
| * Digital out |
| */ |
| static int nvhdmi_dig_playback_pcm_open(struct hda_pcm_stream *hinfo, |
| struct hda_codec *codec, |
| struct snd_pcm_substream *substream) |
| { |
| struct nvhdmi_spec *spec = codec->spec; |
| return snd_hda_multi_out_dig_open(codec, &spec->multiout); |
| } |
| |
| static int nvhdmi_dig_playback_pcm_close(struct hda_pcm_stream *hinfo, |
| struct hda_codec *codec, |
| struct snd_pcm_substream *substream) |
| { |
| struct nvhdmi_spec *spec = codec->spec; |
| return snd_hda_multi_out_dig_close(codec, &spec->multiout); |
| } |
| |
| static int nvhdmi_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 nvhdmi_spec *spec = codec->spec; |
| return snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag, |
| format, substream); |
| } |
| |
| static struct hda_pcm_stream nvhdmi_pcm_digital_playback = { |
| .substreams = 1, |
| .channels_min = 2, |
| .channels_max = 2, |
| .nid = 0x4, /* NID to query formats and rates and setup streams */ |
| .rates = SNDRV_PCM_RATE_48000, |
| .maxbps = 16, |
| .formats = SNDRV_PCM_FMTBIT_S16_LE, |
| .ops = { |
| .open = nvhdmi_dig_playback_pcm_open, |
| .close = nvhdmi_dig_playback_pcm_close, |
| .prepare = nvhdmi_dig_playback_pcm_prepare |
| }, |
| }; |
| |
| static int nvhdmi_build_pcms(struct hda_codec *codec) |
| { |
| struct nvhdmi_spec *spec = codec->spec; |
| struct hda_pcm *info = &spec->pcm_rec; |
| |
| codec->num_pcms = 1; |
| codec->pcm_info = info; |
| |
| info->name = "NVIDIA HDMI"; |
| info->pcm_type = HDA_PCM_TYPE_HDMI; |
| info->stream[SNDRV_PCM_STREAM_PLAYBACK] = nvhdmi_pcm_digital_playback; |
| |
| return 0; |
| } |
| |
| static void nvhdmi_free(struct hda_codec *codec) |
| { |
| kfree(codec->spec); |
| } |
| |
| static struct hda_codec_ops nvhdmi_patch_ops = { |
| .build_controls = nvhdmi_build_controls, |
| .build_pcms = nvhdmi_build_pcms, |
| .init = nvhdmi_init, |
| .free = nvhdmi_free, |
| }; |
| |
| static int patch_nvhdmi(struct hda_codec *codec) |
| { |
| struct nvhdmi_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 = 0x4; /* NID for copying analog to digital, |
| * seems to be unused in pure-digital |
| * case. */ |
| |
| codec->patch_ops = nvhdmi_patch_ops; |
| |
| return 0; |
| } |
| |
| /* |
| * patch entries |
| */ |
| static struct hda_codec_preset snd_hda_preset_nvhdmi[] = { |
| { .id = 0x10de0002, .name = "MCP78 HDMI", .patch = patch_nvhdmi }, |
| { .id = 0x10de0006, .name = "MCP78 HDMI", .patch = patch_nvhdmi }, |
| { .id = 0x10de0007, .name = "MCP7A HDMI", .patch = patch_nvhdmi }, |
| { .id = 0x10de0067, .name = "MCP67 HDMI", .patch = patch_nvhdmi }, |
| { .id = 0x10de8001, .name = "MCP73 HDMI", .patch = patch_nvhdmi }, |
| {} /* terminator */ |
| }; |
| |
| MODULE_ALIAS("snd-hda-codec-id:10de0002"); |
| MODULE_ALIAS("snd-hda-codec-id:10de0006"); |
| MODULE_ALIAS("snd-hda-codec-id:10de0007"); |
| MODULE_ALIAS("snd-hda-codec-id:10de0067"); |
| MODULE_ALIAS("snd-hda-codec-id:10de8001"); |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_DESCRIPTION("Nvidia HDMI HD-audio codec"); |
| |
| static struct hda_codec_preset_list nvhdmi_list = { |
| .preset = snd_hda_preset_nvhdmi, |
| .owner = THIS_MODULE, |
| }; |
| |
| static int __init patch_nvhdmi_init(void) |
| { |
| return snd_hda_add_codec_preset(&nvhdmi_list); |
| } |
| |
| static void __exit patch_nvhdmi_exit(void) |
| { |
| snd_hda_delete_codec_preset(&nvhdmi_list); |
| } |
| |
| module_init(patch_nvhdmi_init) |
| module_exit(patch_nvhdmi_exit) |