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/*
* Speyside with WM8962 audio support
*
* Copyright 2011 Wolfson Microelectronics
*
* 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.
*/
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/jack.h>
#include <linux/gpio.h>
#include <linux/module.h>
#include "../codecs/wm8962.h"
static int sample_rate = 44100;
static int speyside_wm8962_set_bias_level(struct snd_soc_card *card,
struct snd_soc_dapm_context *dapm,
enum snd_soc_bias_level level)
{
struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
int ret;
if (dapm->dev != codec_dai->dev)
return 0;
switch (level) {
case SND_SOC_BIAS_PREPARE:
if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
WM8962_FLL_MCLK, 32768,
sample_rate * 512);
if (ret < 0)
pr_err("Failed to start FLL: %d\n", ret);
ret = snd_soc_dai_set_sysclk(codec_dai,
WM8962_SYSCLK_FLL,
sample_rate * 512,
SND_SOC_CLOCK_IN);
if (ret < 0) {
pr_err("Failed to set SYSCLK: %d\n", ret);
return ret;
}
}
break;
default:
break;
}
return 0;
}
static int speyside_wm8962_set_bias_level_post(struct snd_soc_card *card,
struct snd_soc_dapm_context *dapm,
enum snd_soc_bias_level level)
{
struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
int ret;
if (dapm->dev != codec_dai->dev)
return 0;
switch (level) {
case SND_SOC_BIAS_STANDBY:
ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
32768, SND_SOC_CLOCK_IN);
if (ret < 0) {
pr_err("Failed to switch away from FLL: %d\n", ret);
return ret;
}
ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
0, 0, 0);
if (ret < 0) {
pr_err("Failed to stop FLL: %d\n", ret);
return ret;
}
break;
default:
break;
}
dapm->bias_level = level;
return 0;
}
static int speyside_wm8962_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
sample_rate = params_rate(params);
return 0;
}
static struct snd_soc_ops speyside_wm8962_ops = {
.hw_params = speyside_wm8962_hw_params,
};
static struct snd_soc_dai_link speyside_wm8962_dai[] = {
{
.name = "CPU",
.stream_name = "CPU",
.cpu_dai_name = "samsung-i2s.0",
.codec_dai_name = "wm8962",
.platform_name = "samsung-audio",
.codec_name = "wm8962.1-001a",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBM_CFM,
.ops = &speyside_wm8962_ops,
},
};
static const struct snd_kcontrol_new controls[] = {
SOC_DAPM_PIN_SWITCH("Main Speaker"),
SOC_DAPM_PIN_SWITCH("DMIC"),
};
static struct snd_soc_dapm_widget widgets[] = {
SND_SOC_DAPM_HP("Headphone", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_MIC("DMIC", NULL),
SND_SOC_DAPM_MIC("AMIC", NULL),
SND_SOC_DAPM_SPK("Main Speaker", NULL),
};
static struct snd_soc_dapm_route audio_paths[] = {
{ "Headphone", NULL, "HPOUTL" },
{ "Headphone", NULL, "HPOUTR" },
{ "Main Speaker", NULL, "SPKOUTL" },
{ "Main Speaker", NULL, "SPKOUTR" },
{ "Headset Mic", NULL, "MICBIAS" },
{ "IN4L", NULL, "Headset Mic" },
{ "IN4R", NULL, "Headset Mic" },
{ "AMIC", NULL, "MICBIAS" },
{ "IN1L", NULL, "AMIC" },
{ "IN1R", NULL, "AMIC" },
{ "DMIC", NULL, "MICBIAS" },
{ "DMICDAT", NULL, "DMIC" },
};
static struct snd_soc_jack speyside_wm8962_headset;
/* Headset jack detection DAPM pins */
static struct snd_soc_jack_pin speyside_wm8962_headset_pins[] = {
{
.pin = "Headset Mic",
.mask = SND_JACK_MICROPHONE,
},
{
.pin = "Headphone",
.mask = SND_JACK_MICROPHONE,
},
};
static int speyside_wm8962_late_probe(struct snd_soc_card *card)
{
struct snd_soc_codec *codec = card->rtd[0].codec;
struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
int ret;
ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
32768, SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
ret = snd_soc_jack_new(codec, "Headset",
SND_JACK_HEADSET | SND_JACK_BTN_0,
&speyside_wm8962_headset);
if (ret)
return ret;
ret = snd_soc_jack_add_pins(&speyside_wm8962_headset,
ARRAY_SIZE(speyside_wm8962_headset_pins),
speyside_wm8962_headset_pins);
if (ret)
return ret;
wm8962_mic_detect(codec, &speyside_wm8962_headset);
return 0;
}
static struct snd_soc_card speyside_wm8962 = {
.name = "Speyside WM8962",
.dai_link = speyside_wm8962_dai,
.num_links = ARRAY_SIZE(speyside_wm8962_dai),
.set_bias_level = speyside_wm8962_set_bias_level,
.set_bias_level_post = speyside_wm8962_set_bias_level_post,
.controls = controls,
.num_controls = ARRAY_SIZE(controls),
.dapm_widgets = widgets,
.num_dapm_widgets = ARRAY_SIZE(widgets),
.dapm_routes = audio_paths,
.num_dapm_routes = ARRAY_SIZE(audio_paths),
.late_probe = speyside_wm8962_late_probe,
};
static __devinit int speyside_wm8962_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &speyside_wm8962;
int ret;
card->dev = &pdev->dev;
ret = snd_soc_register_card(card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
ret);
return ret;
}
return 0;
}
static int __devexit speyside_wm8962_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
snd_soc_unregister_card(card);
return 0;
}
static struct platform_driver speyside_wm8962_driver = {
.driver = {
.name = "speyside-wm8962",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
},
.probe = speyside_wm8962_probe,
.remove = __devexit_p(speyside_wm8962_remove),
};
static int __init speyside_wm8962_audio_init(void)
{
return platform_driver_register(&speyside_wm8962_driver);
}
module_init(speyside_wm8962_audio_init);
static void __exit speyside_wm8962_audio_exit(void)
{
platform_driver_unregister(&speyside_wm8962_driver);
}
module_exit(speyside_wm8962_audio_exit);
MODULE_DESCRIPTION("Speyside WM8962 audio support");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:speyside-wm8962");
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