274 lines
6.6 KiB
C
274 lines
6.6 KiB
C
/*
|
|
* sound/soc/codecs/si476x.c -- Codec driver for SI476X chips
|
|
*
|
|
* Copyright (C) 2012 Innovative Converged Devices(ICD)
|
|
* Copyright (C) 2013 Andrey Smirnov
|
|
*
|
|
* Author: Andrey Smirnov <andrew.smirnov@gmail.com>
|
|
*
|
|
* 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; version 2 of the License.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/pcm_params.h>
|
|
#include <linux/regmap.h>
|
|
#include <sound/soc.h>
|
|
#include <sound/initval.h>
|
|
|
|
#include <linux/i2c.h>
|
|
|
|
#include <linux/mfd/si476x-core.h>
|
|
|
|
enum si476x_audio_registers {
|
|
SI476X_DIGITAL_IO_OUTPUT_FORMAT = 0x0203,
|
|
SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE = 0x0202,
|
|
};
|
|
|
|
enum si476x_digital_io_output_format {
|
|
SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT = 11,
|
|
SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT = 8,
|
|
};
|
|
|
|
#define SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK ((0x7 << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) | \
|
|
(0x7 << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT))
|
|
#define SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK (0x7e)
|
|
|
|
enum si476x_daudio_formats {
|
|
SI476X_DAUDIO_MODE_I2S = (0x0 << 1),
|
|
SI476X_DAUDIO_MODE_DSP_A = (0x6 << 1),
|
|
SI476X_DAUDIO_MODE_DSP_B = (0x7 << 1),
|
|
SI476X_DAUDIO_MODE_LEFT_J = (0x8 << 1),
|
|
SI476X_DAUDIO_MODE_RIGHT_J = (0x9 << 1),
|
|
|
|
SI476X_DAUDIO_MODE_IB = (1 << 5),
|
|
SI476X_DAUDIO_MODE_IF = (1 << 6),
|
|
};
|
|
|
|
enum si476x_pcm_format {
|
|
SI476X_PCM_FORMAT_S8 = 2,
|
|
SI476X_PCM_FORMAT_S16_LE = 4,
|
|
SI476X_PCM_FORMAT_S20_3LE = 5,
|
|
SI476X_PCM_FORMAT_S24_LE = 6,
|
|
};
|
|
|
|
static const struct snd_soc_dapm_widget si476x_dapm_widgets[] = {
|
|
SND_SOC_DAPM_OUTPUT("LOUT"),
|
|
SND_SOC_DAPM_OUTPUT("ROUT"),
|
|
};
|
|
|
|
static const struct snd_soc_dapm_route si476x_dapm_routes[] = {
|
|
{ "Capture", NULL, "LOUT" },
|
|
{ "Capture", NULL, "ROUT" },
|
|
};
|
|
|
|
static int si476x_codec_set_dai_fmt(struct snd_soc_dai *codec_dai,
|
|
unsigned int fmt)
|
|
{
|
|
struct si476x_core *core = i2c_mfd_cell_to_core(codec_dai->dev);
|
|
int err;
|
|
u16 format = 0;
|
|
|
|
if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS)
|
|
return -EINVAL;
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
|
|
case SND_SOC_DAIFMT_DSP_A:
|
|
format |= SI476X_DAUDIO_MODE_DSP_A;
|
|
break;
|
|
case SND_SOC_DAIFMT_DSP_B:
|
|
format |= SI476X_DAUDIO_MODE_DSP_B;
|
|
break;
|
|
case SND_SOC_DAIFMT_I2S:
|
|
format |= SI476X_DAUDIO_MODE_I2S;
|
|
break;
|
|
case SND_SOC_DAIFMT_RIGHT_J:
|
|
format |= SI476X_DAUDIO_MODE_RIGHT_J;
|
|
break;
|
|
case SND_SOC_DAIFMT_LEFT_J:
|
|
format |= SI476X_DAUDIO_MODE_LEFT_J;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
|
|
case SND_SOC_DAIFMT_DSP_A:
|
|
case SND_SOC_DAIFMT_DSP_B:
|
|
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
|
|
case SND_SOC_DAIFMT_NB_NF:
|
|
break;
|
|
case SND_SOC_DAIFMT_IB_NF:
|
|
format |= SI476X_DAUDIO_MODE_IB;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
case SND_SOC_DAIFMT_I2S:
|
|
case SND_SOC_DAIFMT_RIGHT_J:
|
|
case SND_SOC_DAIFMT_LEFT_J:
|
|
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
|
|
case SND_SOC_DAIFMT_NB_NF:
|
|
break;
|
|
case SND_SOC_DAIFMT_IB_IF:
|
|
format |= SI476X_DAUDIO_MODE_IB |
|
|
SI476X_DAUDIO_MODE_IF;
|
|
break;
|
|
case SND_SOC_DAIFMT_IB_NF:
|
|
format |= SI476X_DAUDIO_MODE_IB;
|
|
break;
|
|
case SND_SOC_DAIFMT_NB_IF:
|
|
format |= SI476X_DAUDIO_MODE_IF;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
si476x_core_lock(core);
|
|
|
|
err = snd_soc_update_bits(codec_dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
|
|
SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK,
|
|
format);
|
|
|
|
si476x_core_unlock(core);
|
|
|
|
if (err < 0) {
|
|
dev_err(codec_dai->codec->dev, "Failed to set output format\n");
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int si476x_codec_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct si476x_core *core = i2c_mfd_cell_to_core(dai->dev);
|
|
int rate, width, err;
|
|
|
|
rate = params_rate(params);
|
|
if (rate < 32000 || rate > 48000) {
|
|
dev_err(dai->codec->dev, "Rate: %d is not supported\n", rate);
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (params_width(params)) {
|
|
case 8:
|
|
width = SI476X_PCM_FORMAT_S8;
|
|
break;
|
|
case 16:
|
|
width = SI476X_PCM_FORMAT_S16_LE;
|
|
break;
|
|
case 20:
|
|
width = SI476X_PCM_FORMAT_S20_3LE;
|
|
break;
|
|
case 24:
|
|
width = SI476X_PCM_FORMAT_S24_LE;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
si476x_core_lock(core);
|
|
|
|
err = snd_soc_write(dai->codec, SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE,
|
|
rate);
|
|
if (err < 0) {
|
|
dev_err(dai->codec->dev, "Failed to set sample rate\n");
|
|
goto out;
|
|
}
|
|
|
|
err = snd_soc_update_bits(dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
|
|
SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK,
|
|
(width << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) |
|
|
(width << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT));
|
|
if (err < 0) {
|
|
dev_err(dai->codec->dev, "Failed to set output width\n");
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
si476x_core_unlock(core);
|
|
|
|
return err;
|
|
}
|
|
|
|
static struct snd_soc_dai_ops si476x_dai_ops = {
|
|
.hw_params = si476x_codec_hw_params,
|
|
.set_fmt = si476x_codec_set_dai_fmt,
|
|
};
|
|
|
|
static struct snd_soc_dai_driver si476x_dai = {
|
|
.name = "si476x-codec",
|
|
.capture = {
|
|
.stream_name = "Capture",
|
|
.channels_min = 2,
|
|
.channels_max = 2,
|
|
|
|
.rates = SNDRV_PCM_RATE_32000 |
|
|
SNDRV_PCM_RATE_44100 |
|
|
SNDRV_PCM_RATE_48000,
|
|
.formats = SNDRV_PCM_FMTBIT_S8 |
|
|
SNDRV_PCM_FMTBIT_S16_LE |
|
|
SNDRV_PCM_FMTBIT_S20_3LE |
|
|
SNDRV_PCM_FMTBIT_S24_LE
|
|
},
|
|
.ops = &si476x_dai_ops,
|
|
};
|
|
|
|
static struct regmap *si476x_get_regmap(struct device *dev)
|
|
{
|
|
return dev_get_regmap(dev->parent, NULL);
|
|
}
|
|
|
|
static struct snd_soc_codec_driver soc_codec_dev_si476x = {
|
|
.get_regmap = si476x_get_regmap,
|
|
.dapm_widgets = si476x_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(si476x_dapm_widgets),
|
|
.dapm_routes = si476x_dapm_routes,
|
|
.num_dapm_routes = ARRAY_SIZE(si476x_dapm_routes),
|
|
};
|
|
|
|
static int si476x_platform_probe(struct platform_device *pdev)
|
|
{
|
|
return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_si476x,
|
|
&si476x_dai, 1);
|
|
}
|
|
|
|
static int si476x_platform_remove(struct platform_device *pdev)
|
|
{
|
|
snd_soc_unregister_codec(&pdev->dev);
|
|
return 0;
|
|
}
|
|
|
|
MODULE_ALIAS("platform:si476x-codec");
|
|
|
|
static struct platform_driver si476x_platform_driver = {
|
|
.driver = {
|
|
.name = "si476x-codec",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = si476x_platform_probe,
|
|
.remove = si476x_platform_remove,
|
|
};
|
|
module_platform_driver(si476x_platform_driver);
|
|
|
|
MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
|
|
MODULE_DESCRIPTION("ASoC Si4761/64 codec driver");
|
|
MODULE_LICENSE("GPL");
|