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/*
* Analog Devices ADV7511 HDMI transmitter driver
*
* Copyright 2012 Analog Devices Inc.
*
* Licensed under the GPL-2.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/spi/spi.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include "adv7511.h"
static const struct snd_soc_dapm_widget adv7511_dapm_widgets[] = {
SND_SOC_DAPM_OUTPUT("TMDS"),
SND_SOC_DAPM_AIF_IN("AIFIN", "Playback", 0, SND_SOC_NOPM, 0, 0),
};
static const struct snd_soc_dapm_route adv7511_routes[] = {
{ "TMDS", NULL, "AIFIN" },
};
static void adv7511_calc_cts_n(unsigned int f_tmds, unsigned int fs,
unsigned int *cts, unsigned int *n)
{
switch (fs) {
case 32000:
*n = 4096;
break;
case 44100:
*n = 6272;
break;
case 48000:
*n = 6144;
break;
}
*cts = ((f_tmds * *n) / (128 * fs)) * 1000;
}
static int adv7511_update_cts_n(struct adv7511 *adv7511)
{
unsigned int cts = 0;
unsigned int n = 0;
adv7511_calc_cts_n(adv7511->f_tmds, adv7511->f_audio, &cts, &n);
regmap_write(adv7511->regmap, ADV7511_REG_N0, (n >> 16) & 0xf);
regmap_write(adv7511->regmap, ADV7511_REG_N1, (n >> 8) & 0xff);
regmap_write(adv7511->regmap, ADV7511_REG_N2, n & 0xff);
regmap_write(adv7511->regmap, ADV7511_REG_CTS_MANUAL0,
(cts >> 16) & 0xf);
regmap_write(adv7511->regmap, ADV7511_REG_CTS_MANUAL1,
(cts >> 8) & 0xff);
regmap_write(adv7511->regmap, ADV7511_REG_CTS_MANUAL2,
cts & 0xff);
return 0;
}
static int adv7511_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec *codec = rtd->codec;
struct adv7511 *adv7511 = snd_soc_codec_get_drvdata(codec);
unsigned int rate;
unsigned int len;
switch (params_rate(params)) {
case 32000:
rate = ADV7511_SAMPLE_FREQ_32000;
break;
case 44100:
rate = ADV7511_SAMPLE_FREQ_44100;
break;
case 48000:
rate = ADV7511_SAMPLE_FREQ_48000;
break;
case 88200:
rate = ADV7511_SAMPLE_FREQ_88200;
break;
case 96000:
rate = ADV7511_SAMPLE_FREQ_96000;
break;
case 176400:
rate = ADV7511_SAMPLE_FREQ_176400;
break;
case 192000:
rate = ADV7511_SAMPLE_FREQ_192000;
break;
default:
return -EINVAL;
}
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
len = ADV7511_I2S_SAMPLE_LEN_16;
break;
case SNDRV_PCM_FORMAT_S18_3LE:
len = ADV7511_I2S_SAMPLE_LEN_18;
break;
case SNDRV_PCM_FORMAT_S20_3LE:
len = ADV7511_I2S_SAMPLE_LEN_20;
break;
case SNDRV_PCM_FORMAT_S24_LE:
len = ADV7511_I2S_SAMPLE_LEN_24;
break;
default:
return -EINVAL;
}
adv7511->f_audio = params_rate(params);
adv7511_update_cts_n(adv7511);
regmap_update_bits(adv7511->regmap, ADV7511_REG_AUDIO_CFG3,
ADV7511_AUDIO_CFG3_LEN_MASK, len);
regmap_update_bits(adv7511->regmap, ADV7511_REG_I2C_FREQ_ID_CFG,
ADV7511_I2C_FREQ_ID_CFG_RATE_MASK, rate << 4);
regmap_write(adv7511->regmap, 0x73, 0x1);
return 0;
}
static int adv7511_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
struct adv7511 *adv7511 = snd_soc_codec_get_drvdata(codec);
unsigned int audio_source, i2s_format = 0;
unsigned int invert_clock;
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
audio_source = ADV7511_AUDIO_SOURCE_I2S;
i2s_format = ADV7511_I2S_FORMAT_I2S;
break;
case SND_SOC_DAIFMT_RIGHT_J:
audio_source = ADV7511_AUDIO_SOURCE_I2S;
i2s_format = ADV7511_I2S_FORMAT_RIGHT_J;
break;
case SND_SOC_DAIFMT_LEFT_J:
audio_source = ADV7511_AUDIO_SOURCE_I2S;
i2s_format = ADV7511_I2S_FORMAT_LEFT_J;
break;
// case SND_SOC_DAIFMT_SPDIF:
// audio_source = ADV7511_AUDIO_SOURCE_SPDIF;
// break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
invert_clock = 0;
break;
case SND_SOC_DAIFMT_IB_NF:
invert_clock = 1;
break;
default:
return -EINVAL;
}
regmap_update_bits(adv7511->regmap, ADV7511_REG_AUDIO_SOURCE, 0x70,
audio_source << 4);
regmap_update_bits(adv7511->regmap, ADV7511_REG_AUDIO_CONFIG, BIT(6),
invert_clock << 6);
regmap_update_bits(adv7511->regmap, ADV7511_REG_I2S_CONFIG, 0x03,
i2s_format);
adv7511->audio_source = audio_source;
return 0;
}
static int adv7511_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct adv7511 *adv7511 = snd_soc_codec_get_drvdata(codec);
struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
switch (level) {
case SND_SOC_BIAS_ON:
switch (adv7511->audio_source) {
case ADV7511_AUDIO_SOURCE_I2S:
break;
case ADV7511_AUDIO_SOURCE_SPDIF:
regmap_update_bits(adv7511->regmap,
ADV7511_REG_AUDIO_CONFIG, BIT(7),
BIT(7));
break;
}
break;
case SND_SOC_BIAS_PREPARE:
if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
adv7511_packet_enable(adv7511,
ADV7511_PACKET_ENABLE_AUDIO_SAMPLE);
adv7511_packet_enable(adv7511,
ADV7511_PACKET_ENABLE_AUDIO_INFOFRAME);
adv7511_packet_enable(adv7511,
ADV7511_PACKET_ENABLE_N_CTS);
} else {
adv7511_packet_disable(adv7511,
ADV7511_PACKET_ENABLE_AUDIO_SAMPLE);
adv7511_packet_disable(adv7511,
ADV7511_PACKET_ENABLE_AUDIO_INFOFRAME);
adv7511_packet_disable(adv7511,
ADV7511_PACKET_ENABLE_N_CTS);
}
break;
case SND_SOC_BIAS_STANDBY:
regmap_update_bits(adv7511->regmap, ADV7511_REG_AUDIO_CONFIG,
BIT(7), 0);
break;
case SND_SOC_BIAS_OFF:
break;
}
dapm->bias_level = level;
return 0;
}
#define ADV7511_RATES (SNDRV_PCM_RATE_32000 |\
SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |\
SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000)
#define ADV7511_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE |\
SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE)
static const struct snd_soc_dai_ops adv7511_dai_ops = {
.hw_params = adv7511_hw_params,
/*.set_sysclk = adv7511_set_dai_sysclk,*/
.set_fmt = adv7511_set_dai_fmt,
};
static struct snd_soc_dai_driver adv7511_dai = {
.name = "adv7511",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = ADV7511_RATES,
.formats = ADV7511_FORMATS,
},
.ops = &adv7511_dai_ops,
};
static int adv7511_suspend(struct snd_soc_codec *codec)
{
return adv7511_set_bias_level(codec, SND_SOC_BIAS_OFF);
}
static int adv7511_resume(struct snd_soc_codec *codec)
{
return adv7511_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
}
static int adv7511_probe(struct snd_soc_codec *codec)
{
return adv7511_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
}
static int adv7511_remove(struct snd_soc_codec *codec)
{
adv7511_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static struct snd_soc_codec_driver adv7511_codec_driver = {
.probe = adv7511_probe,
.remove = adv7511_remove,
.suspend = adv7511_suspend,
.resume = adv7511_resume,
.set_bias_level = adv7511_set_bias_level,
.dapm_widgets = adv7511_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(adv7511_dapm_widgets),
.dapm_routes = adv7511_routes,
.num_dapm_routes = ARRAY_SIZE(adv7511_routes),
};
int adv7511_audio_init(struct device *dev)
{
return snd_soc_register_codec(dev, &adv7511_codec_driver,
&adv7511_dai, 1);
}
void adv7511_audio_exit(struct device *dev)
{
snd_soc_unregister_codec(dev);
}
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