84db18bbeb
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: mixart: range checking proc file ALSA: hda - Fix a wrong array range check in patch_realtek.c ALSA: ASoC: move dma_data from snd_soc_dai to snd_soc_pcm_stream ALSA: hda - Enable amplifiers on Acer Inspire 6530G ASoC: Only do WM8994 bias off transition from standby ASoC: Don't use DCS_DATAPATH_BUSY for WM hubs devices ASoC: Don't do runtime wm_hubs DC servo updates if using offset correction ASoC: Support second DC servo readback method for wm_hubs ASoC: Avoid wraparound in wm_hubs DC servo correction ALSA: echoaudio - Eliminate use after free ALSA: i2c: cleanup: change parameter to pointer ALSA: hda - Add MSI blacklist for Aopen MZ915-M ASoC: OMAP: Fix capture pointer handling for OMAP1510 to work correctly with recent ALSA PCM code ALSA: hda - Update document about MSI and interrupts ALSA: hda: Fix 0 dB offset for Lenovo Thinkpad models using AD1981 ALSA: hda - Add missing printk argument in previous patch ASoC: Fix passing platform_data to ac97 bus users and fix a leak ALSA: hda - Fix ADC/MUX assignment of ALC269 codec ALSA: hda - Fix invalid bit values passed to snd_hda_codec_amp_stereo() ASoC: wm8994: playback => capture
188 lines
4.6 KiB
C
188 lines
4.6 KiB
C
/*
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* ac97.c -- ALSA Soc AC97 codec support
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*
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* Copyright 2005 Wolfson Microelectronics PLC.
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* Author: Liam Girdwood <lrg@slimlogic.co.uk>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* Generic AC97 support.
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*/
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/ac97_codec.h>
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#include <sound/initval.h>
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#include <sound/soc.h>
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#include "ac97.h"
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#define AC97_VERSION "0.6"
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static int ac97_prepare(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_device *socdev = rtd->socdev;
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struct snd_soc_codec *codec = socdev->card->codec;
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int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
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AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE;
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return snd_ac97_set_rate(codec->ac97, reg, runtime->rate);
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}
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#define STD_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
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SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 |\
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SNDRV_PCM_RATE_48000)
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static struct snd_soc_dai_ops ac97_dai_ops = {
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.prepare = ac97_prepare,
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};
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struct snd_soc_dai ac97_dai = {
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.name = "AC97 HiFi",
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.ac97_control = 1,
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.playback = {
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.stream_name = "AC97 Playback",
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.channels_min = 1,
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.channels_max = 2,
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.rates = STD_AC97_RATES,
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.formats = SND_SOC_STD_AC97_FMTS,},
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.capture = {
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.stream_name = "AC97 Capture",
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.channels_min = 1,
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.channels_max = 2,
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.rates = STD_AC97_RATES,
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.formats = SND_SOC_STD_AC97_FMTS,},
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.ops = &ac97_dai_ops,
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};
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EXPORT_SYMBOL_GPL(ac97_dai);
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static unsigned int ac97_read(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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return soc_ac97_ops.read(codec->ac97, reg);
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}
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static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
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unsigned int val)
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{
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soc_ac97_ops.write(codec->ac97, reg, val);
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return 0;
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}
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static int ac97_soc_probe(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_card *card = socdev->card;
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struct snd_soc_codec *codec;
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struct snd_ac97_bus *ac97_bus;
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struct snd_ac97_template ac97_template;
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int i;
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int ret = 0;
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printk(KERN_INFO "AC97 SoC Audio Codec %s\n", AC97_VERSION);
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socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
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if (!socdev->card->codec)
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return -ENOMEM;
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codec = socdev->card->codec;
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mutex_init(&codec->mutex);
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codec->name = "AC97";
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codec->owner = THIS_MODULE;
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codec->dai = &ac97_dai;
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codec->num_dai = 1;
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codec->write = ac97_write;
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codec->read = ac97_read;
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INIT_LIST_HEAD(&codec->dapm_widgets);
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INIT_LIST_HEAD(&codec->dapm_paths);
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/* register pcms */
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ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
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if (ret < 0)
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goto err;
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/* add codec as bus device for standard ac97 */
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ret = snd_ac97_bus(codec->card, 0, &soc_ac97_ops, NULL, &ac97_bus);
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if (ret < 0)
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goto bus_err;
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memset(&ac97_template, 0, sizeof(struct snd_ac97_template));
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ret = snd_ac97_mixer(ac97_bus, &ac97_template, &codec->ac97);
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if (ret < 0)
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goto bus_err;
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for (i = 0; i < card->num_links; i++) {
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if (card->dai_link[i].codec_dai->ac97_control) {
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snd_ac97_dev_add_pdata(codec->ac97,
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card->dai_link[i].cpu_dai->ac97_pdata);
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}
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}
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return 0;
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bus_err:
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snd_soc_free_pcms(socdev);
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err:
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kfree(socdev->card->codec);
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socdev->card->codec = NULL;
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return ret;
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}
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static int ac97_soc_remove(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec = socdev->card->codec;
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if (!codec)
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return 0;
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snd_soc_free_pcms(socdev);
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kfree(socdev->card->codec);
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return 0;
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}
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#ifdef CONFIG_PM
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static int ac97_soc_suspend(struct platform_device *pdev, pm_message_t msg)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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snd_ac97_suspend(socdev->card->codec->ac97);
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return 0;
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}
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static int ac97_soc_resume(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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snd_ac97_resume(socdev->card->codec->ac97);
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return 0;
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}
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#else
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#define ac97_soc_suspend NULL
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#define ac97_soc_resume NULL
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#endif
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struct snd_soc_codec_device soc_codec_dev_ac97 = {
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.probe = ac97_soc_probe,
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.remove = ac97_soc_remove,
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.suspend = ac97_soc_suspend,
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.resume = ac97_soc_resume,
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};
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EXPORT_SYMBOL_GPL(soc_codec_dev_ac97);
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MODULE_DESCRIPTION("Soc Generic AC97 driver");
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MODULE_AUTHOR("Liam Girdwood");
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MODULE_LICENSE("GPL");
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