Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 1 | /* |
| 2 | * ac97.c -- ALSA Soc AC97 codec support |
| 3 | * |
| 4 | * Copyright 2005 Wolfson Microelectronics PLC. |
Liam Girdwood | d331124 | 2008-10-12 13:17:36 +0100 | [diff] [blame] | 5 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it |
| 8 | * under the terms of the GNU General Public License as published by the |
| 9 | * Free Software Foundation; either version 2 of the License, or (at your |
| 10 | * option) any later version. |
| 11 | * |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 12 | * Generic AC97 support. |
| 13 | */ |
| 14 | |
| 15 | #include <linux/init.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame^] | 16 | #include <linux/slab.h> |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 17 | #include <linux/kernel.h> |
| 18 | #include <linux/device.h> |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 19 | #include <sound/core.h> |
| 20 | #include <sound/pcm.h> |
| 21 | #include <sound/ac97_codec.h> |
| 22 | #include <sound/initval.h> |
| 23 | #include <sound/soc.h> |
Mark Brown | dbac7cb | 2008-06-11 13:47:09 +0100 | [diff] [blame] | 24 | #include "ac97.h" |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 25 | |
Liam Girdwood | 5a8ec34 | 2007-02-02 17:16:41 +0100 | [diff] [blame] | 26 | #define AC97_VERSION "0.6" |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 27 | |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame] | 28 | static int ac97_prepare(struct snd_pcm_substream *substream, |
| 29 | struct snd_soc_dai *dai) |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 30 | { |
| 31 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 32 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 33 | struct snd_soc_device *socdev = rtd->socdev; |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 34 | struct snd_soc_codec *codec = socdev->card->codec; |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 35 | |
| 36 | int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? |
| 37 | AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE; |
| 38 | return snd_ac97_set_rate(codec->ac97, reg, runtime->rate); |
| 39 | } |
| 40 | |
Liam Girdwood | 5a8ec34 | 2007-02-02 17:16:41 +0100 | [diff] [blame] | 41 | #define STD_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ |
Mark Brown | 24c053e | 2008-04-23 15:26:45 +0200 | [diff] [blame] | 42 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 |\ |
| 43 | SNDRV_PCM_RATE_48000) |
Liam Girdwood | 5a8ec34 | 2007-02-02 17:16:41 +0100 | [diff] [blame] | 44 | |
Eric Miao | 6335d05 | 2009-03-03 09:41:00 +0800 | [diff] [blame] | 45 | static struct snd_soc_dai_ops ac97_dai_ops = { |
| 46 | .prepare = ac97_prepare, |
| 47 | }; |
| 48 | |
Liam Girdwood | e550e17 | 2008-07-07 16:07:52 +0100 | [diff] [blame] | 49 | struct snd_soc_dai ac97_dai = { |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 50 | .name = "AC97 HiFi", |
Mark Brown | 3ba9e10 | 2008-11-24 18:01:05 +0000 | [diff] [blame] | 51 | .ac97_control = 1, |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 52 | .playback = { |
| 53 | .stream_name = "AC97 Playback", |
| 54 | .channels_min = 1, |
Liam Girdwood | 5a8ec34 | 2007-02-02 17:16:41 +0100 | [diff] [blame] | 55 | .channels_max = 2, |
| 56 | .rates = STD_AC97_RATES, |
Mark Brown | 33f503c | 2009-05-02 12:24:55 +0100 | [diff] [blame] | 57 | .formats = SND_SOC_STD_AC97_FMTS,}, |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 58 | .capture = { |
| 59 | .stream_name = "AC97 Capture", |
| 60 | .channels_min = 1, |
Liam Girdwood | 5a8ec34 | 2007-02-02 17:16:41 +0100 | [diff] [blame] | 61 | .channels_max = 2, |
| 62 | .rates = STD_AC97_RATES, |
Mark Brown | 33f503c | 2009-05-02 12:24:55 +0100 | [diff] [blame] | 63 | .formats = SND_SOC_STD_AC97_FMTS,}, |
Eric Miao | 6335d05 | 2009-03-03 09:41:00 +0800 | [diff] [blame] | 64 | .ops = &ac97_dai_ops, |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 65 | }; |
Graeme Gregory | 5d0cede | 2007-04-16 19:20:17 +0200 | [diff] [blame] | 66 | EXPORT_SYMBOL_GPL(ac97_dai); |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 67 | |
| 68 | static unsigned int ac97_read(struct snd_soc_codec *codec, |
| 69 | unsigned int reg) |
| 70 | { |
| 71 | return soc_ac97_ops.read(codec->ac97, reg); |
| 72 | } |
| 73 | |
| 74 | static int ac97_write(struct snd_soc_codec *codec, unsigned int reg, |
| 75 | unsigned int val) |
| 76 | { |
| 77 | soc_ac97_ops.write(codec->ac97, reg, val); |
| 78 | return 0; |
| 79 | } |
| 80 | |
| 81 | static int ac97_soc_probe(struct platform_device *pdev) |
| 82 | { |
| 83 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 84 | struct snd_soc_codec *codec; |
| 85 | struct snd_ac97_bus *ac97_bus; |
| 86 | struct snd_ac97_template ac97_template; |
| 87 | int ret = 0; |
| 88 | |
| 89 | printk(KERN_INFO "AC97 SoC Audio Codec %s\n", AC97_VERSION); |
| 90 | |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 91 | socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); |
| 92 | if (!socdev->card->codec) |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 93 | return -ENOMEM; |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 94 | codec = socdev->card->codec; |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 95 | mutex_init(&codec->mutex); |
| 96 | |
| 97 | codec->name = "AC97"; |
| 98 | codec->owner = THIS_MODULE; |
| 99 | codec->dai = &ac97_dai; |
| 100 | codec->num_dai = 1; |
| 101 | codec->write = ac97_write; |
| 102 | codec->read = ac97_read; |
| 103 | INIT_LIST_HEAD(&codec->dapm_widgets); |
| 104 | INIT_LIST_HEAD(&codec->dapm_paths); |
| 105 | |
Manuel Lauss | ecbec24 | 2010-01-04 16:29:49 +0100 | [diff] [blame] | 106 | ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0); |
| 107 | if (ret < 0) { |
| 108 | printk(KERN_ERR "ASoC: failed to init gen ac97 glue\n"); |
| 109 | goto err; |
| 110 | } |
| 111 | |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 112 | /* register pcms */ |
| 113 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); |
Mark Brown | 24c053e | 2008-04-23 15:26:45 +0200 | [diff] [blame] | 114 | if (ret < 0) |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 115 | goto err; |
| 116 | |
| 117 | /* add codec as bus device for standard ac97 */ |
| 118 | ret = snd_ac97_bus(codec->card, 0, &soc_ac97_ops, NULL, &ac97_bus); |
Mark Brown | 24c053e | 2008-04-23 15:26:45 +0200 | [diff] [blame] | 119 | if (ret < 0) |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 120 | goto bus_err; |
| 121 | |
| 122 | memset(&ac97_template, 0, sizeof(struct snd_ac97_template)); |
| 123 | ret = snd_ac97_mixer(ac97_bus, &ac97_template, &codec->ac97); |
Mark Brown | 24c053e | 2008-04-23 15:26:45 +0200 | [diff] [blame] | 124 | if (ret < 0) |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 125 | goto bus_err; |
| 126 | |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 127 | return 0; |
| 128 | |
| 129 | bus_err: |
| 130 | snd_soc_free_pcms(socdev); |
| 131 | |
| 132 | err: |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 133 | kfree(socdev->card->codec); |
| 134 | socdev->card->codec = NULL; |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 135 | return ret; |
| 136 | } |
| 137 | |
| 138 | static int ac97_soc_remove(struct platform_device *pdev) |
| 139 | { |
| 140 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 141 | struct snd_soc_codec *codec = socdev->card->codec; |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 142 | |
Mark Brown | 24c053e | 2008-04-23 15:26:45 +0200 | [diff] [blame] | 143 | if (!codec) |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 144 | return 0; |
| 145 | |
| 146 | snd_soc_free_pcms(socdev); |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 147 | kfree(socdev->card->codec); |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 148 | |
| 149 | return 0; |
| 150 | } |
| 151 | |
Manuel Lauss | 3f77598 | 2008-07-03 09:33:10 +0200 | [diff] [blame] | 152 | #ifdef CONFIG_PM |
| 153 | static int ac97_soc_suspend(struct platform_device *pdev, pm_message_t msg) |
| 154 | { |
| 155 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 156 | |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 157 | snd_ac97_suspend(socdev->card->codec->ac97); |
Manuel Lauss | 3f77598 | 2008-07-03 09:33:10 +0200 | [diff] [blame] | 158 | |
| 159 | return 0; |
| 160 | } |
| 161 | |
| 162 | static int ac97_soc_resume(struct platform_device *pdev) |
| 163 | { |
| 164 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 165 | |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 166 | snd_ac97_resume(socdev->card->codec->ac97); |
Manuel Lauss | 3f77598 | 2008-07-03 09:33:10 +0200 | [diff] [blame] | 167 | |
| 168 | return 0; |
| 169 | } |
| 170 | #else |
| 171 | #define ac97_soc_suspend NULL |
| 172 | #define ac97_soc_resume NULL |
| 173 | #endif |
| 174 | |
Mark Brown | 24c053e | 2008-04-23 15:26:45 +0200 | [diff] [blame] | 175 | struct snd_soc_codec_device soc_codec_dev_ac97 = { |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 176 | .probe = ac97_soc_probe, |
| 177 | .remove = ac97_soc_remove, |
Manuel Lauss | 3f77598 | 2008-07-03 09:33:10 +0200 | [diff] [blame] | 178 | .suspend = ac97_soc_suspend, |
| 179 | .resume = ac97_soc_resume, |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 180 | }; |
Richard Purdie | dbc6b6a | 2006-10-06 18:38:03 +0200 | [diff] [blame] | 181 | EXPORT_SYMBOL_GPL(soc_codec_dev_ac97); |
| 182 | |
| 183 | MODULE_DESCRIPTION("Soc Generic AC97 driver"); |
| 184 | MODULE_AUTHOR("Liam Girdwood"); |
| 185 | MODULE_LICENSE("GPL"); |