/*
* Bells audio support
*
* Copyright 2012 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/wm5102.h"
#include "../codecs/wm9081.h"
/*
* 44.1kHz based clocks for the SYSCLK domain, use a very high clock
* to allow all the DSP functionality to be enabled if desired.
*/
#define SYSCLK_RATE (44100 * 1024)
/* 48kHz based clocks for the ASYNC domain */
#define ASYNCCLK_RATE (48000 * 512)
/* BCLK2 is fixed at this currently */
#define BCLK2_RATE (64 * 8000)
/*
* Expect a 24.576MHz crystal if one is fitted (the driver will function
* if this is not fitted).
*/
#define MCLK_RATE 24576000
#define WM9081_AUDIO_RATE 44100
#define WM9081_MCLK_RATE (WM9081_AUDIO_RATE * 256)
static int bells_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;
struct snd_soc_codec *codec = codec_dai->codec;
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_codec_set_pll(codec, WM5102_FLL1,
ARIZONA_FLL_SRC_MCLK1,
MCLK_RATE,
SYSCLK_RATE);
if (ret < 0)
pr_err("Failed to start FLL: %d\n", ret);
ret = snd_soc_codec_set_pll(codec, WM5102_FLL2,
ARIZONA_FLL_SRC_AIF2BCLK,
BCLK2_RATE,
ASYNCCLK_RATE);
if (ret < 0)
pr_err("Failed to start FLL: %d\n", ret);
}
break;
default:
break;
}
return 0;
}
static int bells_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;
struct snd_soc_codec *codec = codec_dai->codec;
int ret;
if (dapm->dev != codec_dai->dev)
return 0;
switch (level) {
case SND_SOC_BIAS_STANDBY:
ret = snd_soc_codec_set_pll(codec, WM5102_FLL1, 0, 0, 0);
if (ret < 0) {
pr_err("Failed to stop FLL: %d\n", ret);
return ret;
}
ret = snd_soc_codec_set_pll(codec, WM5102_FLL2, 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 bells_late_probe(struct snd_soc_card *card)
{
struct snd_soc_codec *codec = card->rtd[0].codec;
struct snd_soc_dai *aif1_dai = card->rtd[0].codec_dai;
struct snd_soc_dai *aif2_dai = card->rtd[1].cpu_dai;
struct snd_soc_dai *aif3_dai = card->rtd[2].cpu_dai;
struct snd_soc_dai *wm9081_dai = card->rtd[2].codec_dai;
int ret;
ret = snd_soc_dai_set_sysclk(aif1_dai, ARIZONA_CLK_SYSCLK, 0, 0);
if (ret != 0) {
dev_err(aif1_dai->dev, "Failed to set AIF1 clock: %d\n", ret);
return ret;
}
ret = snd_soc_dai_set_sysclk(aif2_dai, ARIZONA_CLK_ASYNCCLK, 0, 0);
if (ret != 0) {
dev_err(aif2_dai->dev, "Failed to set AIF2 clock: %d\n", ret);
return ret;
}
ret = snd_soc_dai_set_sysclk(aif3_dai, ARIZONA_CLK_SYSCLK, 0, 0);
if (ret != 0) {
dev_err(aif1_dai->dev, "Failed to set AIF1 clock: %d\n", ret);
return ret;
}
ret = snd_soc_codec_set_sysclk(codec, ARIZONA_CLK_SYSCLK,
ARIZONA_CLK_SRC_FLL1, SYSCLK_RATE,
SND_SOC_CLOCK_IN);
if (ret != 0) {
dev_err(codec->dev, "Failed to set SYSCLK: %d\n", ret);
return ret;
}
ret = snd_soc_codec_set_sysclk(codec, ARIZONA_CLK_OPCLK, 0,
WM9081_MCLK_RATE, SND_SOC_CLOCK_OUT);
if (ret != 0) {
dev_err(codec->dev, "Failed to set OPCLK: %d\n", ret);
return ret;
}
ret = snd_soc_codec_set_sysclk(codec, ARIZONA_CLK_ASYNCCLK,
ARIZONA_CLK_SRC_FLL2, ASYNCCLK_RATE,
SND_SOC_CLOCK_IN);
if (ret != 0) {
dev_err(codec->dev, "Failed to set SYSCLK: %d\n", ret);
return ret;
}
ret = snd_soc_codec_set_sysclk(wm9081_dai->codec, WM9081_SYSCLK_MCLK,
0, WM9081_MCLK_RATE, 0);
if (ret != 0) {
dev_err(wm9081_dai->dev, "Failed to set MCLK: %d\n", ret);
return ret;
}
return 0;
}
static const struct snd_soc_pcm_stream baseband_params = {
.formats = SNDRV_PCM_FMTBIT_S32_LE,
.rate_min = 8000,
.rate_max = 8000,
.channels_min = 2,
.channels_max = 2,
};
static const struct snd_soc_pcm_stream sub_params = {
.formats = SNDRV_PCM_FMTBIT_S32_LE,
.rate_min = WM9081_AUDIO_RATE,
.rate_max = WM9081_AUDIO_RATE,
.channels_min = 2,
.channels_max = 2,
};
static struct snd_soc_dai_link bells_dai_wm5102[] = {
{
.name = "CPU",
.stream_name = "CPU",
.cpu_dai_name = "samsung-i2s.0",
.codec_dai_name = "wm5102-aif1",
.platform_name = "samsung-audio",
.codec_name = "wm5102-codec",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBM_CFM,
},
{
.name = "Baseband",
.stream_name = "Baseband",
.cpu_dai_name = "wm5102-aif2",
.codec_dai_name = "wm1250-ev1",
.codec_name = "wm1250-ev1.1-0027",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBM_CFM,
.ignore_suspend = 1,
.params = &baseband_params,
},
{
.name = "Sub",
.stream_name = "Sub",
.cpu_dai_name = "wm5102-aif3",
.codec_dai_name = "wm9081-hifi",
.codec_name = "wm9081.1-006c",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBS_CFS,
.ignore_suspend = 1,
.params = &sub_params,
},
};
static struct snd_soc_dai_link bells_dai_wm5110[] = {
{
.name = "CPU",
.stream_name = "CPU",
.cpu_dai_name = "samsung-i2s.0",
.codec_dai_name = "wm5110-aif1",
.platform_name = "samsung-audio",
.codec_name = "wm5110-codec",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBM_CFM,
},
{
.name = "Baseband",
.stream_name = "Baseband",
.cpu_dai_name = "wm5110-aif2",
.codec_dai_name = "wm1250-ev1",
.codec_name = "wm1250-ev1.1-0027",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBM_CFM,
.ignore_suspend = 1,
.params = &baseband_params,
},
{
.name = "Sub",
.stream_name = "Sub",
.cpu_dai_name = "wm5110-aif3",
.codec_dai_name = "wm9081-hifi",
.codec_name = "wm9081.1-006c",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBS_CFS,
.ignore_suspend = 1,
.params = &sub_params,
},
};
static struct snd_soc_codec_conf bells_codec_conf[] = {
{
.dev_name = "wm9081.1-006c",
.name_prefix = "Sub",
},
};
static struct snd_soc_dapm_route bells_routes[] = {
{ "Sub CLK_SYS", NULL, "OPCLK" },
};
static struct snd_soc_card bells_cards[] = {
{
.name = "Bells WM5102",
.owner = THIS_MODULE,
.dai_link = bells_dai_wm5102,
.num_links = ARRAY_SIZE(bells_dai_wm5102),
.codec_conf = bells_codec_conf,
.num_configs = ARRAY_SIZE(bells_codec_conf),
.late_probe = bells_late_probe,
.dapm_routes = bells_routes,
.num_dapm_routes = ARRAY_SIZE(bells_routes),
.set_bias_level = bells_set_bias_level,
.set_bias_level_post = bells_set_bias_level_post,
},
{
.name = "Bells WM5110",
.owner = THIS_MODULE,
.dai_link = bells_dai_wm5110,
.num_links = ARRAY_SIZE(bells_dai_wm5110),
.codec_conf = bells_codec_conf,
.num_configs = ARRAY_SIZE(bells_codec_conf),
.late_probe = bells_late_probe,
.dapm_routes = bells_routes,
.num_dapm_routes = ARRAY_SIZE(bells_routes),
.set_bias_level = bells_set_bias_level,
.set_bias_level_post = bells_set_bias_level_post,
},
};
static __devinit int bells_probe(struct platform_device *pdev)
{
int ret;
bells_cards[pdev->id].dev = &pdev->dev;
ret = snd_soc_register_card(&bells_cards[pdev->id]);
if (ret) {
dev_err(&pdev->dev,
"snd_soc_register_card(%s) failed: %d\n",
bells_cards[pdev->id].name, ret);
return ret;
}
return 0;
}
static int __devexit bells_remove(struct platform_device *pdev)
{
snd_soc_unregister_card(&bells_cards[pdev->id]);
return 0;
}
static struct platform_driver bells_driver = {
.driver = {
.name = "bells",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
},
.probe = bells_probe,
.remove = __devexit_p(bells_remove),
};
module_platform_driver(bells_driver);
MODULE_DESCRIPTION("Bells audio support");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:bells");
