mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-21 00:42:16 +00:00
05ae323180
Machine driver for DB1200 AC97 and I2S audio systems, intended as a proper reference asoc machine for Alchemy-based systems. AC97/I2S can be selected at boot time by setting switch S6.7. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: Linux-MIPS <linux-mips@linux-mips.org> Cc: alsa-devel@alsa-project.org Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
142 lines
3.4 KiB
C
142 lines
3.4 KiB
C
/*
|
|
* DB1200 ASoC audio fabric support code.
|
|
*
|
|
* (c) 2008-9 Manuel Lauss <manuel.lauss@gmail.com>
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/platform_device.h>
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/soc.h>
|
|
#include <sound/soc-dapm.h>
|
|
#include <asm/mach-au1x00/au1000.h>
|
|
#include <asm/mach-au1x00/au1xxx_psc.h>
|
|
#include <asm/mach-au1x00/au1xxx_dbdma.h>
|
|
#include <asm/mach-db1x00/bcsr.h>
|
|
|
|
#include "../codecs/ac97.h"
|
|
#include "../codecs/wm8731.h"
|
|
#include "psc.h"
|
|
|
|
/*------------------------- AC97 PART ---------------------------*/
|
|
|
|
static struct snd_soc_dai_link db1200_ac97_dai = {
|
|
.name = "AC97",
|
|
.stream_name = "AC97 HiFi",
|
|
.cpu_dai = &au1xpsc_ac97_dai,
|
|
.codec_dai = &ac97_dai,
|
|
};
|
|
|
|
static struct snd_soc_card db1200_ac97_machine = {
|
|
.name = "DB1200_AC97",
|
|
.dai_link = &db1200_ac97_dai,
|
|
.num_links = 1,
|
|
.platform = &au1xpsc_soc_platform,
|
|
};
|
|
|
|
static struct snd_soc_device db1200_ac97_devdata = {
|
|
.card = &db1200_ac97_machine,
|
|
.codec_dev = &soc_codec_dev_ac97,
|
|
};
|
|
|
|
/*------------------------- I2S PART ---------------------------*/
|
|
|
|
static int db1200_i2s_startup(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
|
struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
|
|
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
|
|
int ret;
|
|
|
|
/* WM8731 has its own 12MHz crystal */
|
|
snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK,
|
|
12000000, SND_SOC_CLOCK_IN);
|
|
|
|
/* codec is bitclock and lrclk master */
|
|
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_LEFT_J |
|
|
SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_LEFT_J |
|
|
SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret = 0;
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static struct snd_soc_ops db1200_i2s_wm8731_ops = {
|
|
.startup = db1200_i2s_startup,
|
|
};
|
|
|
|
static struct snd_soc_dai_link db1200_i2s_dai = {
|
|
.name = "WM8731",
|
|
.stream_name = "WM8731 PCM",
|
|
.cpu_dai = &au1xpsc_i2s_dai,
|
|
.codec_dai = &wm8731_dai,
|
|
.ops = &db1200_i2s_wm8731_ops,
|
|
};
|
|
|
|
static struct snd_soc_card db1200_i2s_machine = {
|
|
.name = "DB1200_I2S",
|
|
.dai_link = &db1200_i2s_dai,
|
|
.num_links = 1,
|
|
.platform = &au1xpsc_soc_platform,
|
|
};
|
|
|
|
static struct snd_soc_device db1200_i2s_devdata = {
|
|
.card = &db1200_i2s_machine,
|
|
.codec_dev = &soc_codec_dev_wm8731,
|
|
};
|
|
|
|
/*------------------------- COMMON PART ---------------------------*/
|
|
|
|
static struct platform_device *db1200_asoc_dev;
|
|
|
|
static int __init db1200_audio_load(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = -ENOMEM;
|
|
db1200_asoc_dev = platform_device_alloc("soc-audio", -1);
|
|
if (!db1200_asoc_dev)
|
|
goto out;
|
|
|
|
/* DB1200 board setup set PSC1MUX to preferred audio device */
|
|
if (bcsr_read(BCSR_RESETS) & BCSR_RESETS_PSC1MUX)
|
|
platform_set_drvdata(db1200_asoc_dev, &db1200_i2s_devdata);
|
|
else
|
|
platform_set_drvdata(db1200_asoc_dev, &db1200_ac97_devdata);
|
|
|
|
db1200_ac97_devdata.dev = &db1200_asoc_dev->dev;
|
|
db1200_i2s_devdata.dev = &db1200_asoc_dev->dev;
|
|
ret = platform_device_add(db1200_asoc_dev);
|
|
|
|
if (ret) {
|
|
platform_device_put(db1200_asoc_dev);
|
|
db1200_asoc_dev = NULL;
|
|
}
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void __exit db1200_audio_unload(void)
|
|
{
|
|
platform_device_unregister(db1200_asoc_dev);
|
|
}
|
|
|
|
module_init(db1200_audio_load);
|
|
module_exit(db1200_audio_unload);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("DB1200 ASoC audio support");
|
|
MODULE_AUTHOR("Manuel Lauss");
|