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/*
* Copyright (C) 2017 NXP
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/of_reserved_mem.h>
#include <linux/i2c.h>
#include <linux/of_gpio.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/clk.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include <sound/control.h>
#include <sound/pcm_params.h>
#include <sound/soc-dapm.h>
#include <linux/pinctrl/consumer.h>
#include "fsl_rpmsg_i2s.h"
struct imx_rpmsg_data {
struct snd_soc_dai_link dai[1];
struct snd_soc_card card;
};
static const struct snd_soc_dapm_widget imx_wm8960_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_SPK("Ext Spk", NULL),
SND_SOC_DAPM_MIC("Mic Jack", NULL),
SND_SOC_DAPM_MIC("Main MIC", NULL),
};
static int imx_rpmsg_probe(struct platform_device *pdev)
{
struct device_node *cpu_np;
struct device_node *codec_np = NULL;
struct platform_device *cpu_pdev;
struct imx_rpmsg_data *data;
struct fsl_rpmsg_i2s *rpmsg_i2s;
struct snd_soc_dai_link_component *dlc;
int ret;
dlc = devm_kzalloc(&pdev->dev, 3 * sizeof(*dlc), GFP_KERNEL);
if (!dlc)
return -ENOMEM;
cpu_np = of_parse_phandle(pdev->dev.of_node, "cpu-dai", 0);
if (!cpu_np) {
dev_err(&pdev->dev, "cpu dai phandle missing or invalid\n");
ret = -EINVAL;
goto fail;
}
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data) {
ret = -ENOMEM;
goto fail;
}
cpu_pdev = of_find_device_by_node(cpu_np);
if (!cpu_pdev) {
dev_err(&pdev->dev, "failed to find rpmsg platform device\n");
ret = -EINVAL;
goto fail;
}
ret = of_reserved_mem_device_init_by_idx(&pdev->dev, pdev->dev.of_node, 0);
if (ret)
dev_warn(&pdev->dev, "no reserved DMA memory for rpmsg device\n");
rpmsg_i2s = platform_get_drvdata(cpu_pdev);
if (rpmsg_i2s->codec_in_dt) {
codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
if (!codec_np) {
dev_err(&pdev->dev, "phandle missing or invalid\n");
ret = -EINVAL;
goto fail;
}
}
data->dai[0].cpus = &dlc[0];
data->dai[0].num_cpus = 1;
data->dai[0].platforms = &dlc[1];
data->dai[0].num_platforms = 1;
data->dai[0].codecs = &dlc[2];
data->dai[0].num_codecs = 1;
data->dai[0].name = "rpmsg hifi";
data->dai[0].stream_name = "rpmsg hifi";
data->dai[0].dai_fmt = SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS;
if (rpmsg_i2s->codec_wm8960) {
if (rpmsg_i2s->codec_in_dt) {
data->dai[0].codecs->of_node = codec_np;
data->dai[0].codecs->dai_name = "rpmsg-wm8960-hifi";
} else {
data->dai[0].codecs->dai_name = "rpmsg-wm8960-hifi";
data->dai[0].codecs->name = "rpmsg-audio-codec-wm8960";
}
}
if (rpmsg_i2s->codec_dummy) {
data->dai[0].codecs->dai_name = "snd-soc-dummy-dai";
data->dai[0].codecs->name = "snd-soc-dummy";
}
if (rpmsg_i2s->codec_ak4497) {
data->dai[0].codecs->dai_name = "rpmsg-ak4497-aif";
data->dai[0].codecs->name = "rpmsg-audio-codec-ak4497";
data->dai[0].dai_fmt = SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS;
}
data->dai[0].cpus->dai_name = dev_name(&cpu_pdev->dev);
data->dai[0].platforms->of_node = cpu_np;
data->dai[0].playback_only = true;
data->dai[0].capture_only = true;
data->card.num_links = 1;
data->card.dai_link = data->dai;
if (of_property_read_bool(pdev->dev.of_node, "rpmsg-out"))
data->dai[0].capture_only = false;
if (of_property_read_bool(pdev->dev.of_node, "rpmsg-in"))
data->dai[0].playback_only = false;
if (data->dai[0].playback_only && data->dai[0].capture_only) {
dev_err(&pdev->dev, "no enabled rpmsg DAI link\n");
ret = -EINVAL;
goto fail;
}
data->card.dev = &pdev->dev;
data->card.owner = THIS_MODULE;
ret = snd_soc_of_parse_card_name(&data->card, "model");
if (ret)
goto fail;
if (rpmsg_i2s->codec_wm8960) {
ret = snd_soc_of_parse_audio_routing(&data->card,
"audio-routing");
if (ret)
goto fail;
data->card.dapm_widgets = imx_wm8960_dapm_widgets;
data->card.num_dapm_widgets =
ARRAY_SIZE(imx_wm8960_dapm_widgets);
}
platform_set_drvdata(pdev, &data->card);
snd_soc_card_set_drvdata(&data->card, data);
ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
goto fail;
}
fail:
if (cpu_np)
of_node_put(cpu_np);
return ret;
}
static const struct of_device_id imx_rpmsg_dt_ids[] = {
{ .compatible = "fsl,imx-audio-rpmsg", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, imx_rpmsg_dt_ids);
static struct platform_driver imx_rpmsg_driver = {
.driver = {
.name = "imx-audio-rpmsg",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
.of_match_table = imx_rpmsg_dt_ids,
},
.probe = imx_rpmsg_probe,
};
module_platform_driver(imx_rpmsg_driver);
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_DESCRIPTION("Freescale i.MX rpmsg audio ASoC machine driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:imx-rpmsg");
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