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/*
* Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#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 <linux/gpio.h>
#include "../codecs/jzcodec.h"
#include "jz4740-pcm.h"
#include "jz4740-i2s.h"
#define N526_AMP_EN_GPIO JZ_GPIO_PORTD(4)
static int n526_spk_event(struct snd_soc_dapm_widget *widget,
struct snd_kcontrol *ctrl, int event)
{
gpio_set_value(N526_AMP_EN_GPIO, !SND_SOC_DAPM_EVENT_OFF(event));
return 0;
}
static const struct snd_soc_dapm_widget n526_widgets[] = {
SND_SOC_DAPM_SPK("Speaker", n526_spk_event),
SND_SOC_DAPM_HP("Headphone", NULL),
SND_SOC_DAPM_MIC("Mic", NULL),
};
static const struct snd_soc_dapm_route n526_routes[] = {
{"Mic", NULL, "MIC"},
{"Speaker", NULL, "LOUT"},
{"Speaker", NULL, "ROUT"},
{"Headphone", NULL, "LOUT"},
{"Headphone", NULL, "ROUT"},
};
static const struct snd_kcontrol_new n526_controls[] = {
SOC_DAPM_PIN_SWITCH("Speaker"),
};
#define N526_DAIFMT (SND_SOC_DAIFMT_I2S | \
SND_SOC_DAIFMT_NB_NF | \
SND_SOC_DAIFMT_CBM_CFM)
static int n526_codec_init(struct snd_soc_codec *codec)
{
int ret;
struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai;
struct snd_soc_dai *codec_dai = codec->socdev->card->dai_link->codec_dai;
snd_soc_dapm_nc_pin(codec, "LIN");
snd_soc_dapm_nc_pin(codec, "RIN");
ret = snd_soc_dai_set_fmt(codec_dai, N526_DAIFMT);
if (ret < 0) {
dev_err(codec->dev, "Failed to set codec dai format: %d\n", ret);
return ret;
}
ret = snd_soc_dai_set_fmt(cpu_dai, N526_DAIFMT);
if (ret < 0) {
dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
return ret;
}
ret = snd_soc_dai_set_sysclk(codec_dai, JZCODEC_SYSCLK, 111,
SND_SOC_CLOCK_IN);
if (ret < 0) {
dev_err(codec->dev, "Failed to set codec dai sysclk: %d\n", ret);
return ret;
}
snd_soc_dapm_new_controls(codec, n526_widgets, ARRAY_SIZE(n526_widgets));
snd_soc_add_controls(codec, n526_controls,
ARRAY_SIZE(n526_controls));
snd_soc_dapm_add_routes(codec, n526_routes, ARRAY_SIZE(n526_routes));
snd_soc_dapm_sync(codec);
return 0;
}
static struct snd_soc_dai_link n526_dai = {
.name = "jz-codec",
.stream_name = "JZCODEC",
.cpu_dai = &jz4740_i2s_dai,
.codec_dai = &jz_codec_dai,
.init = n526_codec_init,
};
static struct snd_soc_card n526 = {
.name = "N526",
.dai_link = &n526_dai,
.num_links = 1,
.platform = &jz4740_soc_platform,
};
static struct snd_soc_device n526_snd_devdata = {
.card = &n526,
.codec_dev = &soc_codec_dev_jzcodec,
};
static struct platform_device *n526_snd_device;
static int __init n526_init(void)
{
int ret;
n526_snd_device = platform_device_alloc("soc-audio", -1);
if (!n526_snd_device)
return -ENOMEM;
ret = gpio_request(N526_AMP_EN_GPIO, "AMP");
if (ret) {
pr_err("n526 snd: Failed to request AMP GPIO(%d): %d\n",
N526_AMP_EN_GPIO, ret);
goto err_device_put;
}
gpio_direction_output(JZ_GPIO_PORTD(4), 0);
platform_set_drvdata(n526_snd_device, &n526_snd_devdata);
n526_snd_devdata.dev = &n526_snd_device->dev;
ret = platform_device_add(n526_snd_device);
if (ret) {
pr_err("n526 snd: Failed to add snd soc device: %d\n", ret);
goto err_unset_pdata;
}
return 0;
err_unset_pdata:
platform_set_drvdata(n526_snd_device, NULL);
gpio_free(N526_AMP_EN_GPIO);
err_device_put:
platform_device_put(n526_snd_device);
return ret;
}
module_init(n526_init);
static void __exit n526_exit(void)
{
gpio_free(N526_AMP_EN_GPIO);
platform_device_unregister(n526_snd_device);
}
module_exit(n526_exit);
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("ALSA SoC N526 audio support");
MODULE_LICENSE("GPL v2");
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