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/* sound/soc/s3c24xx/jive_wm8750.c
*
* Copyright 2007,2008 Simtec Electronics
*
* Based on sound/soc/pxa/spitz.c
* Copyright 2005 Wolfson Microelectronics PLC.
* Copyright 2005 Openedhand Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/mach-types.h>
#include "s3c-dma.h"
#include "s3c2412-i2s.h"
#include "../codecs/wm8750.h"
static const struct snd_soc_dapm_route audio_map[] = {
{ "Headphone Jack", NULL, "LOUT1" },
{ "Headphone Jack", NULL, "ROUT1" },
{ "Internal Speaker", NULL, "LOUT2" },
{ "Internal Speaker", NULL, "ROUT2" },
{ "LINPUT1", NULL, "Line Input" },
{ "RINPUT1", NULL, "Line Input" },
};
static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_SPK("Internal Speaker", NULL),
SND_SOC_DAPM_LINE("Line In", NULL),
};
static int jive_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->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct s3c_i2sv2_rate_calc div;
unsigned int clk = 0;
int ret = 0;
switch (params_rate(params)) {
case 8000:
case 16000:
case 48000:
case 96000:
clk = 12288000;
break;
case 11025:
case 22050:
case 44100:
clk = 11289600;
break;
}
s3c_i2sv2_iis_calc_rate(&div, NULL, params_rate(params),
s3c_i2sv2_get_clock(cpu_dai));
/* set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS);
if (ret < 0)
return ret;
/* set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS);
if (ret < 0)
return ret;
/* set the codec system clock for DAC and ADC */
ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_RCLK, div.fs_div);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_PRESCALER,
div.clk_div - 1);
if (ret < 0)
return ret;
return 0;
}
static struct snd_soc_ops jive_ops = {
.hw_params = jive_hw_params,
};
static int jive_wm8750_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_dapm_context *dapm = &codec->dapm;
int err;
/* These endpoints are not being used. */
snd_soc_dapm_nc_pin(dapm, "LINPUT2");
snd_soc_dapm_nc_pin(dapm, "RINPUT2");
snd_soc_dapm_nc_pin(dapm, "LINPUT3");
snd_soc_dapm_nc_pin(dapm, "RINPUT3");
snd_soc_dapm_nc_pin(dapm, "OUT3");
snd_soc_dapm_nc_pin(dapm, "MONO");
/* Add jive specific widgets */
err = snd_soc_dapm_new_controls(dapm, wm8750_dapm_widgets,
ARRAY_SIZE(wm8750_dapm_widgets));
if (err) {
printk(KERN_ERR "%s: failed to add widgets (%d)\n",
__func__, err);
return err;
}
snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
snd_soc_dapm_sync(dapm);
return 0;
}
static struct snd_soc_dai_link jive_dai = {
.name = "wm8750",
.stream_name = "WM8750",
.cpu_dai_name = "s3c2412-i2s",
.codec_dai_name = "wm8750-hifi",
.platform_name = "s3c24xx-pcm-audio",
.codec_name = "wm8750-codec.0-0x1a",
.init = jive_wm8750_init,
.ops = &jive_ops,
};
/* jive audio machine driver */
static struct snd_soc_card snd_soc_machine_jive = {
.name = "Jive",
.dai_link = &jive_dai,
.num_links = 1,
};
static struct platform_device *jive_snd_device;
static int __init jive_init(void)
{
int ret;
if (!machine_is_jive())
return 0;
printk("JIVE WM8750 Audio support\n");
jive_snd_device = platform_device_alloc("soc-audio", -1);
if (!jive_snd_device)
return -ENOMEM;
platform_set_drvdata(jive_snd_device, &snd_soc_machine_jive);
ret = platform_device_add(jive_snd_device);
if (ret)
platform_device_put(jive_snd_device);
return ret;
}
static void __exit jive_exit(void)
{
platform_device_unregister(jive_snd_device);
}
module_init(jive_init);
module_exit(jive_exit);
MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
MODULE_LICENSE("GPL");
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