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// SPDX-License-Identifier: (GPL-2.0+
//
// DSP machine driver
//
// Copyright (c) 2012-2013 by Tensilica Inc. ALL RIGHTS RESERVED.
// Copyright 2018 NXP
#include <linux/module.h>
#include <linux/of_platform.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/string.h>
struct imx_dsp_audio_data {
struct snd_soc_dai_link dai[2];
struct snd_soc_card card;
};
static int imx_dsp_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 *codec_dai = rtd->codec_dai;
int ret;
ret = snd_soc_dai_set_sysclk(codec_dai, 0,
clk_get_rate(devm_clk_get(codec_dai->dev, "mclk")), SND_SOC_CLOCK_IN);
if (ret) {
dev_err(rtd->dev, "failed to set codec sysclk: %d\n", ret);
return ret;
}
return 0;
}
static struct snd_soc_ops imx_dsp_ops_be = {
.hw_params = imx_dsp_hw_params,
};
static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params) {
struct snd_interval *rate;
struct snd_interval *channels;
struct snd_mask *mask;
rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
rate->max = rate->min = 48000;
channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
channels->max = channels->min = 2;
mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
snd_mask_none(mask);
snd_mask_set(mask, SNDRV_PCM_FORMAT_S16_LE);
return 0;
}
static const struct snd_soc_dapm_route imx_dsp_audio_map[] = {
{"Playback", NULL, "Compress Playback"},/* dai route for be and fe */
};
static int imx_dsp_audio_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct device_node *cpu_np=NULL, *codec_np=NULL, *platform_np=NULL;
struct snd_soc_dai_link_component *comp;
struct platform_device *cpu_pdev;
struct imx_dsp_audio_data *data;
int ret;
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data) {
ret = -ENOMEM;
goto fail;
}
comp = devm_kzalloc(&pdev->dev, 6 * sizeof(*comp), GFP_KERNEL);
if (!comp) {
ret = -ENOMEM;
goto fail;
}
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;
}
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;
}
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;
}
platform_np = of_parse_phandle(pdev->dev.of_node, "audio-platform", 0);
if (!platform_np) {
dev_err(&pdev->dev, "platform missing or invalid\n");
ret = -EINVAL;
goto fail;
}
data->dai[0].cpus = &comp[0];
data->dai[0].codecs = &comp[1];
data->dai[0].platforms = &comp[2];
data->dai[0].num_cpus = 1;
data->dai[0].num_codecs = 1;
data->dai[0].num_platforms = 1;
data->dai[0].name = "dsp hifi fe";
data->dai[0].stream_name = "dsp hifi fe";
data->dai[0].codecs->dai_name = "snd-soc-dummy-dai";
data->dai[0].codecs->name = "snd-soc-dummy";
data->dai[0].cpus->dai_name = dev_name(&cpu_pdev->dev);
data->dai[0].cpus->of_node = cpu_np;
data->dai[0].platforms->of_node = platform_np;
data->dai[0].playback_only = true;
data->dai[0].capture_only = false;
data->dai[0].dpcm_playback = 1;
data->dai[0].dpcm_capture = 0;
data->dai[0].dynamic = 1,
data->dai[0].ignore_pmdown_time = 1,
data->dai[0].dai_fmt = SND_SOC_DAIFMT_LEFT_J |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS;
data->dai[1].cpus = &comp[3];
data->dai[1].codecs = &comp[4];
data->dai[1].platforms = &comp[5];
data->dai[1].num_cpus = 1;
data->dai[1].num_codecs = 1;
data->dai[1].num_platforms = 1;
data->dai[1].name = "dsp hifi be";
data->dai[1].stream_name = "dsp hifi be";
if (sysfs_streq(codec_np->name, "wm8960")) {
if (of_device_is_compatible(np, "fsl,imx-dsp-audio-lpa"))
data->dai[1].codecs->dai_name = "rpmsg-wm8960-hifi";
else
data->dai[1].codecs->dai_name = "wm8960-hifi";
data->dai[1].dai_fmt = SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_CBS_CFS;
} else {
data->dai[1].codecs->dai_name = "cs42888";
data->dai[1].dai_fmt = SND_SOC_DAIFMT_LEFT_J |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS;
}
data->dai[1].codecs->of_node = codec_np;
data->dai[1].cpus->dai_name = "snd-soc-dummy-dai";
data->dai[1].cpus->name = "snd-soc-dummy";
data->dai[1].platforms->name = "snd-soc-dummy";
data->dai[1].playback_only = true;
data->dai[1].capture_only = false;
data->dai[1].dpcm_playback = 1;
if (of_device_is_compatible(np, "fsl,imx-dsp-audio-lpa"))
data->dai[1].ignore_suspend = 1;
data->dai[1].dpcm_capture = 0;
data->dai[1].no_pcm = 1,
data->dai[1].ignore_pmdown_time = 1,
data->dai[1].ops = &imx_dsp_ops_be;
data->dai[1].be_hw_params_fixup = be_hw_params_fixup;
data->card.dapm_routes = imx_dsp_audio_map;
data->card.num_dapm_routes = ARRAY_SIZE(imx_dsp_audio_map);
data->card.num_links = 2;
data->card.dai_link = data->dai;
data->card.dev = &pdev->dev;
data->card.owner = THIS_MODULE;
ret = snd_soc_of_parse_card_name(&data->card, "model");
if (ret)
goto fail;
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);
if (codec_np)
of_node_put(codec_np);
if (platform_np)
of_node_put(platform_np);
return ret;
}
static const struct of_device_id imx_dsp_audio_dt_ids[] = {
{ .compatible = "fsl,imx-dsp-audio", },
{ .compatible = "fsl,imx-dsp-audio-lpa", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, imx_dsp_audio_dt_ids);
static struct platform_driver imx_dsp_audio_driver = {
.driver = {
.name = "imx-dsp-audio",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
.of_match_table = imx_dsp_audio_dt_ids,
},
.probe = imx_dsp_audio_probe,
};
module_platform_driver(imx_dsp_audio_driver);
MODULE_LICENSE("GPL v2");
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