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#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/clk.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <asm/mach-types.h>
#include "../codecs/wm8731.h"
#include "s3c64xx-i2s.h"
static struct platform_device *socdev;
static void wm_shutdown(struct snd_pcm_substream *substream)
{
printk(KERN_INFO "%s: substream %p\n", __func__, substream);
}
static int wm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
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;
unsigned int fmt;
int ret;
printk(KERN_INFO "%s: (%p,%p)\n", __func__, substream, params);
printk(KERN_INFO "%s: dai: cpu %p, codec %p\n", __func__, cpu_dai, codec_dai);
//fmt = SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;
fmt = SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM;
fmt |= SND_SOC_DAIFMT_I2S;
ret = snd_soc_dai_set_fmt(codec_dai, fmt);
if (ret < 0)
return ret;
/* set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
if (ret < 0)
return ret;
if (fmt == (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM)) {
unsigned long iis_clkrate;
ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_MUX, 0,
SND_SOC_CLOCK_OUT);
if (ret < 0) {
printk(KERN_ERR "%s: cpu set_sysclk err\n", __func__);
return ret;
}
/* set prescaler division for sample rate */
ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C64XX_DIV_PRESCALER, 1);
if (ret < 0) {
printk(KERN_ERR "%s: codec clkdiv err\n", __func__);
return ret;
}
iis_clkrate = s3c64xx_i2s_get_clockrate(cpu_dai) / 2;
printk(KERN_INFO "%s: clockrate %ld\n", __func__, iis_clkrate);
iis_clkrate = 12000000; //tmphack//
/* set the codec system clock for DAC and ADC */
ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK,
iis_clkrate,
SND_SOC_CLOCK_IN);
if (ret < 0) {
printk(KERN_ERR "%s: codec sysclk err\n", __func__);
return ret;
}
} else {
/* TODO */
BUG();
}
return 0;
}
static int wm_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
int ret;
ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_MUX, 0,
SND_SOC_CLOCK_OUT);
if (ret < 0) {
printk(KERN_ERR "%s: cpu set_sysclk err\n", __func__);
return ret;
}
ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C64XX_DIV_PRESCALER, 1);
if (ret < 0) {
printk(KERN_ERR "%s: cpu set_clkdiv err\n", __func__);
return ret;
}
ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK,
12000000, SND_SOC_CLOCK_IN);
if (ret < 0) {
printk(KERN_ERR "%s: codec sysclk err\n", __func__);
return ret;
}
return 0;
}
static struct snd_soc_ops wm_ops = {
.startup = wm_startup,
.hw_params = wm_hw_params,
.shutdown = wm_shutdown,
};
static const struct snd_soc_dapm_widget widgets[] = {
SND_SOC_DAPM_LINE("Line Out", NULL),
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_INPUT("Line In"),
};
static const struct snd_soc_dapm_route intercon[] = {
/* headphone connected to LHPOUT1, RHPOUT1 */
{"Headphone Jack", NULL, "LHPOUT"},
{"Headphone Jack", NULL, "RHPOUT"},
{"Line Out", NULL, "LOUT" },
{"Line Out", NULL, "ROUT" },
{"LLINEIN", NULL, "Line In" },
{"RLINEIN", NULL, "Line In" },
};
static int wm_init(struct snd_soc_codec *codec)
{
printk(KERN_DEBUG "%s: codec %p\n", __func__, codec);
snd_soc_dapm_new_controls(codec, widgets, ARRAY_SIZE(widgets));
snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
snd_soc_dapm_sync(codec);
return 0;
}
#include "s3c24xx-pcm.h"
static struct snd_soc_dai_link wm_dai_link = {
.name = "WM8731",
.stream_name = "WM8731",
.cpu_dai = &s3c64xx_i2s_dai,
.codec_dai = &wm8731_dai,
.init = wm_init,
.ops = &wm_ops,
};
static struct snd_soc_card wm_card = {
.name = "SMDK6410-WM8731",
.dai_link = &wm_dai_link,
.platform = &s3c24xx_soc_platform,
.num_links = 1,
};
struct wm8731_setup_data wm_setup = {
.i2c_bus = 0,
.i2c_address = 0x1a,
};
static struct snd_soc_device wm_snd_devdata = {
.card = &wm_card,
.codec_dev = &soc_codec_dev_wm8731,
.codec_data = &wm_setup,
};
static int __init smdk6410_wm8731_init(void)
{
int ret;
printk(KERN_INFO "%s: welcome\n", __func__);
if (!machine_is_smdk6410()) {
printk(KERN_INFO "%s: for SMDK6410s\n", __func__);
return -ENOENT;
}
socdev = platform_device_alloc("soc-audio", 0);
if (!socdev) {
printk(KERN_ERR "%s: no device\n", __func__);
return -ENOMEM;
}
platform_set_drvdata(socdev, &wm_snd_devdata);
wm_snd_devdata.dev = &socdev->dev;
ret = platform_device_add(socdev);
if (ret) {
printk(KERN_ERR "%s: failed to add\n", __func__);
goto err_dev;
}
printk(KERN_INFO "%s: succesfull\n", __func__);
return 0;
err_dev:
platform_device_put(socdev);
return ret;
}
module_init(smdk6410_wm8731_init);
MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
MODULE_LICENSE("GPL");
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