mirror of
https://github.com/torvalds/linux
synced 2024-10-28 14:18:20 +00:00
00200107a2
Both the snd_soc_codec and snd_soc_platform struct do have a pointer to the parent card and both handle this pointer in mostly the same way. This patch moves the card field to the component level which will allow further code consolidation between platforms and CODECS. Since there are only a handful of users of the snd_soc_codec struct's card field (and none of the snd_soc_platform's) these are update in this patch as well, which allows it to be removed from the snd_soc_codec struct. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@linaro.org>
165 lines
3.8 KiB
C
165 lines
3.8 KiB
C
/*
|
|
* ac97.c -- ALSA Soc AC97 codec support
|
|
*
|
|
* Copyright 2005 Wolfson Microelectronics PLC.
|
|
* Author: Liam Girdwood <lrg@slimlogic.co.uk>
|
|
*
|
|
* This program 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.
|
|
*
|
|
* Generic AC97 support.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/device.h>
|
|
#include <linux/module.h>
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/ac97_codec.h>
|
|
#include <sound/initval.h>
|
|
#include <sound/soc.h>
|
|
|
|
static const struct snd_soc_dapm_widget ac97_widgets[] = {
|
|
SND_SOC_DAPM_INPUT("RX"),
|
|
SND_SOC_DAPM_OUTPUT("TX"),
|
|
};
|
|
|
|
static const struct snd_soc_dapm_route ac97_routes[] = {
|
|
{ "AC97 Capture", NULL, "RX" },
|
|
{ "TX", NULL, "AC97 Playback" },
|
|
};
|
|
|
|
static int ac97_prepare(struct snd_pcm_substream *substream,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct snd_soc_codec *codec = dai->codec;
|
|
|
|
int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
|
|
AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE;
|
|
return snd_ac97_set_rate(codec->ac97, reg, substream->runtime->rate);
|
|
}
|
|
|
|
#define STD_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
|
|
SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 |\
|
|
SNDRV_PCM_RATE_48000)
|
|
|
|
static const struct snd_soc_dai_ops ac97_dai_ops = {
|
|
.prepare = ac97_prepare,
|
|
};
|
|
|
|
static struct snd_soc_dai_driver ac97_dai = {
|
|
.name = "ac97-hifi",
|
|
.ac97_control = 1,
|
|
.playback = {
|
|
.stream_name = "AC97 Playback",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = STD_AC97_RATES,
|
|
.formats = SND_SOC_STD_AC97_FMTS,},
|
|
.capture = {
|
|
.stream_name = "AC97 Capture",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = STD_AC97_RATES,
|
|
.formats = SND_SOC_STD_AC97_FMTS,},
|
|
.ops = &ac97_dai_ops,
|
|
};
|
|
|
|
static unsigned int ac97_read(struct snd_soc_codec *codec,
|
|
unsigned int reg)
|
|
{
|
|
return soc_ac97_ops->read(codec->ac97, reg);
|
|
}
|
|
|
|
static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
|
|
unsigned int val)
|
|
{
|
|
soc_ac97_ops->write(codec->ac97, reg, val);
|
|
return 0;
|
|
}
|
|
|
|
static int ac97_soc_probe(struct snd_soc_codec *codec)
|
|
{
|
|
struct snd_ac97_bus *ac97_bus;
|
|
struct snd_ac97_template ac97_template;
|
|
int ret;
|
|
|
|
/* add codec as bus device for standard ac97 */
|
|
ret = snd_ac97_bus(codec->component.card->snd_card, 0, soc_ac97_ops,
|
|
NULL, &ac97_bus);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
memset(&ac97_template, 0, sizeof(struct snd_ac97_template));
|
|
ret = snd_ac97_mixer(ac97_bus, &ac97_template, &codec->ac97);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int ac97_soc_suspend(struct snd_soc_codec *codec)
|
|
{
|
|
snd_ac97_suspend(codec->ac97);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ac97_soc_resume(struct snd_soc_codec *codec)
|
|
{
|
|
snd_ac97_resume(codec->ac97);
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
#define ac97_soc_suspend NULL
|
|
#define ac97_soc_resume NULL
|
|
#endif
|
|
|
|
static struct snd_soc_codec_driver soc_codec_dev_ac97 = {
|
|
.write = ac97_write,
|
|
.read = ac97_read,
|
|
.probe = ac97_soc_probe,
|
|
.suspend = ac97_soc_suspend,
|
|
.resume = ac97_soc_resume,
|
|
|
|
.dapm_widgets = ac97_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(ac97_widgets),
|
|
.dapm_routes = ac97_routes,
|
|
.num_dapm_routes = ARRAY_SIZE(ac97_routes),
|
|
};
|
|
|
|
static int ac97_probe(struct platform_device *pdev)
|
|
{
|
|
return snd_soc_register_codec(&pdev->dev,
|
|
&soc_codec_dev_ac97, &ac97_dai, 1);
|
|
}
|
|
|
|
static int ac97_remove(struct platform_device *pdev)
|
|
{
|
|
snd_soc_unregister_codec(&pdev->dev);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver ac97_codec_driver = {
|
|
.driver = {
|
|
.name = "ac97-codec",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
|
|
.probe = ac97_probe,
|
|
.remove = ac97_remove,
|
|
};
|
|
|
|
module_platform_driver(ac97_codec_driver);
|
|
|
|
MODULE_DESCRIPTION("Soc Generic AC97 driver");
|
|
MODULE_AUTHOR("Liam Girdwood");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:ac97-codec");
|