Skip to content
Permalink
Browse files

ASoC: Add support for Rpi-DAC

  • Loading branch information
koalo authored and popcornmix committed Jan 25, 2016
1 parent 9b3d06c commit 471833dcece9bd4c02ea4ef5bcf7ba61a36dc544
Showing with 208 additions and 0 deletions.
  1. +7 −0 sound/soc/bcm/Kconfig
  2. +2 −0 sound/soc/bcm/Makefile
  3. +119 −0 sound/soc/bcm/rpi-dac.c
  4. +9 −0 sound/soc/codecs/Kconfig
  5. +2 −0 sound/soc/codecs/Makefile
  6. +69 −0 sound/soc/codecs/pcm1794a.c
@@ -14,3 +14,10 @@ config SND_BCM2708_SOC_HIFIBERRY_DAC
select SND_SOC_PCM5102A
help
Say Y or M if you want to add support for HifiBerry DAC.

config SND_BCM2708_SOC_RPI_DAC
tristate "Support for RPi-DAC"
depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
select SND_SOC_PCM1794A
help
Say Y or M if you want to add support for RPi-DAC.
@@ -5,5 +5,7 @@ obj-$(CONFIG_SND_BCM2835_SOC_I2S) += snd-soc-bcm2835-i2s.o

# BCM2708 Machine Support
snd-soc-hifiberry-dac-objs := hifiberry_dac.o
snd-soc-rpi-dac-objs := rpi-dac.o

obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
@@ -0,0 +1,119 @@
/*
* ASoC Driver for RPi-DAC.
*
* Author: Florian Meier <florian.meier@koalo.de>
* Copyright 2013
*
* 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.
*
* 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/platform_device.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/jack.h>

static int snd_rpi_rpi_dac_init(struct snd_soc_pcm_runtime *rtd)
{
return 0;
}

static int snd_rpi_rpi_dac_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

return snd_soc_dai_set_bclk_ratio(cpu_dai, 32*2);
}

/* machine stream operations */
static struct snd_soc_ops snd_rpi_rpi_dac_ops = {
.hw_params = snd_rpi_rpi_dac_hw_params,
};

static struct snd_soc_dai_link snd_rpi_rpi_dac_dai[] = {
{
.name = "RPi-DAC",
.stream_name = "RPi-DAC HiFi",
.cpu_dai_name = "bcm2708-i2s.0",
.codec_dai_name = "pcm1794a-hifi",
.platform_name = "bcm2708-i2s.0",
.codec_name = "pcm1794a-codec",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
.ops = &snd_rpi_rpi_dac_ops,
.init = snd_rpi_rpi_dac_init,
},
};

/* audio machine driver */
static struct snd_soc_card snd_rpi_rpi_dac = {
.name = "snd_rpi_rpi_dac",
.owner = THIS_MODULE,
.dai_link = snd_rpi_rpi_dac_dai,
.num_links = ARRAY_SIZE(snd_rpi_rpi_dac_dai),
};

static int snd_rpi_rpi_dac_probe(struct platform_device *pdev)
{
int ret = 0;

snd_rpi_rpi_dac.dev = &pdev->dev;

if (pdev->dev.of_node) {
struct device_node *i2s_node;
struct snd_soc_dai_link *dai = &snd_rpi_rpi_dac_dai[0];
i2s_node = of_parse_phandle(pdev->dev.of_node, "i2s-controller", 0);

if (i2s_node) {
dai->cpu_dai_name = NULL;
dai->cpu_of_node = i2s_node;
dai->platform_name = NULL;
dai->platform_of_node = i2s_node;
}
}

ret = snd_soc_register_card(&snd_rpi_rpi_dac);
if (ret)
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);

return ret;
}

static int snd_rpi_rpi_dac_remove(struct platform_device *pdev)
{
return snd_soc_unregister_card(&snd_rpi_rpi_dac);
}

static const struct of_device_id snd_rpi_rpi_dac_of_match[] = {
{ .compatible = "rpi,rpi-dac", },
{},
};
MODULE_DEVICE_TABLE(of, snd_rpi_rpi_dac_of_match);

static struct platform_driver snd_rpi_rpi_dac_driver = {
.driver = {
.name = "snd-rpi-dac",
.owner = THIS_MODULE,
.of_match_table = snd_rpi_rpi_dac_of_match,
},
.probe = snd_rpi_rpi_dac_probe,
.remove = snd_rpi_rpi_dac_remove,
};

module_platform_driver(snd_rpi_rpi_dac_driver);

MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
MODULE_DESCRIPTION("ASoC Driver for RPi-DAC");
MODULE_LICENSE("GPL v2");
@@ -101,6 +101,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_RT5514 if I2C
select SND_SOC_RT5616 if I2C
select SND_SOC_PCM5102A if I2C
select SND_SOC_PCM1794A if I2C
select SND_SOC_RT5631 if I2C
select SND_SOC_RT5640 if I2C
select SND_SOC_RT5645 if I2C
@@ -631,6 +632,14 @@ config SND_SOC_RT5514
config SND_SOC_RT5616
tristate "Realtek RT5616 CODEC"

config SND_SOC_RT298
tristate
depends on I2C

config SND_SOC_PCM1794A
tristate
depends on I2C

config SND_SOC_PCM5102A
tristate
depends on I2C
@@ -98,6 +98,7 @@ snd-soc-rt286-objs := rt286.o
snd-soc-rt298-objs := rt298.o
snd-soc-rt5514-objs := rt5514.o
snd-soc-rt5616-objs := rt5616.o
snd-soc-pcm1794a-objs := pcm1794a.o
snd-soc-pcm5102a-objs := pcm5102a.o
snd-soc-rt5631-objs := rt5631.o
snd-soc-rt5640-objs := rt5640.o
@@ -308,6 +309,7 @@ obj-$(CONFIG_SND_SOC_RT286) += snd-soc-rt286.o
obj-$(CONFIG_SND_SOC_RT298) += snd-soc-rt298.o
obj-$(CONFIG_SND_SOC_RT5514) += snd-soc-rt5514.o
obj-$(CONFIG_SND_SOC_RT5616) += snd-soc-rt5616.o
obj-$(CONFIG_SND_SOC_PCM1794A) += snd-soc-pcm1794a.o
obj-$(CONFIG_SND_SOC_PCM5102A) += snd-soc-pcm5102a.o
obj-$(CONFIG_SND_SOC_RT5631) += snd-soc-rt5631.o
obj-$(CONFIG_SND_SOC_RT5640) += snd-soc-rt5640.o
@@ -0,0 +1,69 @@
/*
* Driver for the PCM1794A codec
*
* Author: Florian Meier <florian.meier@koalo.de>
* Copyright 2013
*
* 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.
*
* 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/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>

#include <sound/soc.h>

static struct snd_soc_dai_driver pcm1794a_dai = {
.name = "pcm1794a-hifi",
.playback = {
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S24_LE
},
};

static struct snd_soc_codec_driver soc_codec_dev_pcm1794a;

static int pcm1794a_probe(struct platform_device *pdev)
{
return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_pcm1794a,
&pcm1794a_dai, 1);
}

static int pcm1794a_remove(struct platform_device *pdev)
{
snd_soc_unregister_codec(&pdev->dev);
return 0;
}

static const struct of_device_id pcm1794a_of_match[] = {
{ .compatible = "ti,pcm1794a", },
{ }
};
MODULE_DEVICE_TABLE(of, pcm1794a_of_match);

static struct platform_driver pcm1794a_codec_driver = {
.probe = pcm1794a_probe,
.remove = pcm1794a_remove,
.driver = {
.name = "pcm1794a-codec",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(pcm1794a_of_match),
},
};

module_platform_driver(pcm1794a_codec_driver);

MODULE_DESCRIPTION("ASoC PCM1794A codec driver");
MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
MODULE_LICENSE("GPL v2");

0 comments on commit 471833d

Please sign in to comment.
You can’t perform that action at this time.