1dbc6b6adSRichard Purdie /* 2dbc6b6adSRichard Purdie * ac97.c -- ALSA Soc AC97 codec support 3dbc6b6adSRichard Purdie * 4dbc6b6adSRichard Purdie * Copyright 2005 Wolfson Microelectronics PLC. 5d331124dSLiam Girdwood * Author: Liam Girdwood <lrg@slimlogic.co.uk> 6dbc6b6adSRichard Purdie * 7dbc6b6adSRichard Purdie * This program is free software; you can redistribute it and/or modify it 8dbc6b6adSRichard Purdie * under the terms of the GNU General Public License as published by the 9dbc6b6adSRichard Purdie * Free Software Foundation; either version 2 of the License, or (at your 10dbc6b6adSRichard Purdie * option) any later version. 11dbc6b6adSRichard Purdie * 12dbc6b6adSRichard Purdie * Generic AC97 support. 13dbc6b6adSRichard Purdie */ 14dbc6b6adSRichard Purdie 15dbc6b6adSRichard Purdie #include <linux/init.h> 16dbc6b6adSRichard Purdie #include <linux/kernel.h> 17dbc6b6adSRichard Purdie #include <linux/device.h> 18dbc6b6adSRichard Purdie #include <sound/core.h> 19dbc6b6adSRichard Purdie #include <sound/pcm.h> 20dbc6b6adSRichard Purdie #include <sound/ac97_codec.h> 21dbc6b6adSRichard Purdie #include <sound/initval.h> 22dbc6b6adSRichard Purdie #include <sound/soc.h> 23dbac7cb8SMark Brown #include "ac97.h" 24dbc6b6adSRichard Purdie 255a8ec343SLiam Girdwood #define AC97_VERSION "0.6" 26dbc6b6adSRichard Purdie 27dee89c4dSMark Brown static int ac97_prepare(struct snd_pcm_substream *substream, 28dee89c4dSMark Brown struct snd_soc_dai *dai) 29dbc6b6adSRichard Purdie { 30dbc6b6adSRichard Purdie struct snd_pcm_runtime *runtime = substream->runtime; 31dbc6b6adSRichard Purdie struct snd_soc_pcm_runtime *rtd = substream->private_data; 32dbc6b6adSRichard Purdie struct snd_soc_device *socdev = rtd->socdev; 336627a653SMark Brown struct snd_soc_codec *codec = socdev->card->codec; 34dbc6b6adSRichard Purdie 35dbc6b6adSRichard Purdie int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? 36dbc6b6adSRichard Purdie AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE; 37dbc6b6adSRichard Purdie return snd_ac97_set_rate(codec->ac97, reg, runtime->rate); 38dbc6b6adSRichard Purdie } 39dbc6b6adSRichard Purdie 405a8ec343SLiam Girdwood #define STD_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 4124c053e7SMark Brown SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 |\ 4224c053e7SMark Brown SNDRV_PCM_RATE_48000) 435a8ec343SLiam Girdwood 446335d055SEric Miao static struct snd_soc_dai_ops ac97_dai_ops = { 456335d055SEric Miao .prepare = ac97_prepare, 466335d055SEric Miao }; 476335d055SEric Miao 48e550e17fSLiam Girdwood struct snd_soc_dai ac97_dai = { 49dbc6b6adSRichard Purdie .name = "AC97 HiFi", 503ba9e10aSMark Brown .ac97_control = 1, 51dbc6b6adSRichard Purdie .playback = { 52dbc6b6adSRichard Purdie .stream_name = "AC97 Playback", 53dbc6b6adSRichard Purdie .channels_min = 1, 545a8ec343SLiam Girdwood .channels_max = 2, 555a8ec343SLiam Girdwood .rates = STD_AC97_RATES, 5633f503c9SMark Brown .formats = SND_SOC_STD_AC97_FMTS,}, 57dbc6b6adSRichard Purdie .capture = { 58dbc6b6adSRichard Purdie .stream_name = "AC97 Capture", 59dbc6b6adSRichard Purdie .channels_min = 1, 605a8ec343SLiam Girdwood .channels_max = 2, 615a8ec343SLiam Girdwood .rates = STD_AC97_RATES, 6233f503c9SMark Brown .formats = SND_SOC_STD_AC97_FMTS,}, 636335d055SEric Miao .ops = &ac97_dai_ops, 64dbc6b6adSRichard Purdie }; 655d0cedeeSGraeme Gregory EXPORT_SYMBOL_GPL(ac97_dai); 66dbc6b6adSRichard Purdie 67dbc6b6adSRichard Purdie static unsigned int ac97_read(struct snd_soc_codec *codec, 68dbc6b6adSRichard Purdie unsigned int reg) 69dbc6b6adSRichard Purdie { 70dbc6b6adSRichard Purdie return soc_ac97_ops.read(codec->ac97, reg); 71dbc6b6adSRichard Purdie } 72dbc6b6adSRichard Purdie 73dbc6b6adSRichard Purdie static int ac97_write(struct snd_soc_codec *codec, unsigned int reg, 74dbc6b6adSRichard Purdie unsigned int val) 75dbc6b6adSRichard Purdie { 76dbc6b6adSRichard Purdie soc_ac97_ops.write(codec->ac97, reg, val); 77dbc6b6adSRichard Purdie return 0; 78dbc6b6adSRichard Purdie } 79dbc6b6adSRichard Purdie 80dbc6b6adSRichard Purdie static int ac97_soc_probe(struct platform_device *pdev) 81dbc6b6adSRichard Purdie { 82dbc6b6adSRichard Purdie struct snd_soc_device *socdev = platform_get_drvdata(pdev); 83dbc6b6adSRichard Purdie struct snd_soc_codec *codec; 84dbc6b6adSRichard Purdie struct snd_ac97_bus *ac97_bus; 85dbc6b6adSRichard Purdie struct snd_ac97_template ac97_template; 86dbc6b6adSRichard Purdie int ret = 0; 87dbc6b6adSRichard Purdie 88dbc6b6adSRichard Purdie printk(KERN_INFO "AC97 SoC Audio Codec %s\n", AC97_VERSION); 89dbc6b6adSRichard Purdie 906627a653SMark Brown socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 916627a653SMark Brown if (!socdev->card->codec) 92dbc6b6adSRichard Purdie return -ENOMEM; 936627a653SMark Brown codec = socdev->card->codec; 94dbc6b6adSRichard Purdie mutex_init(&codec->mutex); 95dbc6b6adSRichard Purdie 96dbc6b6adSRichard Purdie codec->name = "AC97"; 97dbc6b6adSRichard Purdie codec->owner = THIS_MODULE; 98dbc6b6adSRichard Purdie codec->dai = &ac97_dai; 99dbc6b6adSRichard Purdie codec->num_dai = 1; 100dbc6b6adSRichard Purdie codec->write = ac97_write; 101dbc6b6adSRichard Purdie codec->read = ac97_read; 102dbc6b6adSRichard Purdie INIT_LIST_HEAD(&codec->dapm_widgets); 103dbc6b6adSRichard Purdie INIT_LIST_HEAD(&codec->dapm_paths); 104dbc6b6adSRichard Purdie 105dbc6b6adSRichard Purdie /* register pcms */ 106dbc6b6adSRichard Purdie ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 107dbc6b6adSRichard Purdie if (ret < 0) 108dbc6b6adSRichard Purdie goto err; 109dbc6b6adSRichard Purdie 110dbc6b6adSRichard Purdie /* add codec as bus device for standard ac97 */ 111dbc6b6adSRichard Purdie ret = snd_ac97_bus(codec->card, 0, &soc_ac97_ops, NULL, &ac97_bus); 112dbc6b6adSRichard Purdie if (ret < 0) 113dbc6b6adSRichard Purdie goto bus_err; 114dbc6b6adSRichard Purdie 115dbc6b6adSRichard Purdie memset(&ac97_template, 0, sizeof(struct snd_ac97_template)); 116dbc6b6adSRichard Purdie ret = snd_ac97_mixer(ac97_bus, &ac97_template, &codec->ac97); 117dbc6b6adSRichard Purdie if (ret < 0) 118dbc6b6adSRichard Purdie goto bus_err; 119dbc6b6adSRichard Purdie 120968a6025SMark Brown ret = snd_soc_init_card(socdev); 121dbc6b6adSRichard Purdie if (ret < 0) 122dbc6b6adSRichard Purdie goto bus_err; 123dbc6b6adSRichard Purdie return 0; 124dbc6b6adSRichard Purdie 125dbc6b6adSRichard Purdie bus_err: 126dbc6b6adSRichard Purdie snd_soc_free_pcms(socdev); 127dbc6b6adSRichard Purdie 128dbc6b6adSRichard Purdie err: 1296627a653SMark Brown kfree(socdev->card->codec); 1306627a653SMark Brown socdev->card->codec = NULL; 131dbc6b6adSRichard Purdie return ret; 132dbc6b6adSRichard Purdie } 133dbc6b6adSRichard Purdie 134dbc6b6adSRichard Purdie static int ac97_soc_remove(struct platform_device *pdev) 135dbc6b6adSRichard Purdie { 136dbc6b6adSRichard Purdie struct snd_soc_device *socdev = platform_get_drvdata(pdev); 1376627a653SMark Brown struct snd_soc_codec *codec = socdev->card->codec; 138dbc6b6adSRichard Purdie 13924c053e7SMark Brown if (!codec) 140dbc6b6adSRichard Purdie return 0; 141dbc6b6adSRichard Purdie 142dbc6b6adSRichard Purdie snd_soc_free_pcms(socdev); 1436627a653SMark Brown kfree(socdev->card->codec); 144dbc6b6adSRichard Purdie 145dbc6b6adSRichard Purdie return 0; 146dbc6b6adSRichard Purdie } 147dbc6b6adSRichard Purdie 1483f775987SManuel Lauss #ifdef CONFIG_PM 1493f775987SManuel Lauss static int ac97_soc_suspend(struct platform_device *pdev, pm_message_t msg) 1503f775987SManuel Lauss { 1513f775987SManuel Lauss struct snd_soc_device *socdev = platform_get_drvdata(pdev); 1523f775987SManuel Lauss 1536627a653SMark Brown snd_ac97_suspend(socdev->card->codec->ac97); 1543f775987SManuel Lauss 1553f775987SManuel Lauss return 0; 1563f775987SManuel Lauss } 1573f775987SManuel Lauss 1583f775987SManuel Lauss static int ac97_soc_resume(struct platform_device *pdev) 1593f775987SManuel Lauss { 1603f775987SManuel Lauss struct snd_soc_device *socdev = platform_get_drvdata(pdev); 1613f775987SManuel Lauss 1626627a653SMark Brown snd_ac97_resume(socdev->card->codec->ac97); 1633f775987SManuel Lauss 1643f775987SManuel Lauss return 0; 1653f775987SManuel Lauss } 1663f775987SManuel Lauss #else 1673f775987SManuel Lauss #define ac97_soc_suspend NULL 1683f775987SManuel Lauss #define ac97_soc_resume NULL 1693f775987SManuel Lauss #endif 1703f775987SManuel Lauss 171dbc6b6adSRichard Purdie struct snd_soc_codec_device soc_codec_dev_ac97 = { 172dbc6b6adSRichard Purdie .probe = ac97_soc_probe, 173dbc6b6adSRichard Purdie .remove = ac97_soc_remove, 1743f775987SManuel Lauss .suspend = ac97_soc_suspend, 1753f775987SManuel Lauss .resume = ac97_soc_resume, 176dbc6b6adSRichard Purdie }; 177dbc6b6adSRichard Purdie EXPORT_SYMBOL_GPL(soc_codec_dev_ac97); 178dbc6b6adSRichard Purdie 179dbc6b6adSRichard Purdie MODULE_DESCRIPTION("Soc Generic AC97 driver"); 180dbc6b6adSRichard Purdie MODULE_AUTHOR("Liam Girdwood"); 181dbc6b6adSRichard Purdie MODULE_LICENSE("GPL"); 182