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// SPDX-License-Identifier: GPL-2.0-only
//
// Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
//
// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
// Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
//
#include <linux/module.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-acpi.h>
#include <sound/soc-dapm.h>
#include "../utils.h"
static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
int tdm_slot, struct snd_soc_dai_link **dai_link)
{
struct snd_soc_dai_link_component *platform;
struct snd_soc_dai_link *dl;
dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
if (!dl || !platform)
return -ENOMEM;
platform->name = platform_name;
dl->name = devm_kasprintf(dev, GFP_KERNEL,
AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot));
dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
if (!dl->name || !dl->cpus)
return -ENOMEM;
dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot));
dl->codecs = &snd_soc_dummy_dlc;
if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)
return -ENOMEM;
dl->num_cpus = 1;
dl->num_codecs = 1;
dl->platforms = platform;
dl->num_platforms = 1;
dl->id = 0;
dl->nonatomic = 1;
dl->no_pcm = 1;
dl->dpcm_capture = 1;
dl->dpcm_playback = 1;
*dai_link = dl;
return 0;
}
static int avs_i2s_test_probe(struct platform_device *pdev)
{
struct snd_soc_dai_link *dai_link;
struct snd_soc_acpi_mach *mach;
struct snd_soc_card *card;
struct device *dev = &pdev->dev;
const char *pname;
int ssp_port, tdm_slot, ret;
mach = dev_get_platdata(dev);
pname = mach->mach_params.platform;
if (!avs_mach_singular_ssp(mach)) {
dev_err(dev, "Invalid SSP configuration\n");
return -EINVAL;
}
ssp_port = avs_mach_ssp_port(mach);
if (!avs_mach_singular_tdm(mach, ssp_port)) {
dev_err(dev, "Invalid TDM configuration\n");
return -EINVAL;
}
tdm_slot = avs_mach_ssp_tdm(mach, ssp_port);
card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
if (!card)
return -ENOMEM;
card->name = devm_kasprintf(dev, GFP_KERNEL,
AVS_STRING_FMT("ssp", "-loopback", ssp_port, tdm_slot));
if (!card->name)
return -ENOMEM;
ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link);
if (ret) {
dev_err(dev, "Failed to create dai link: %d\n", ret);
return ret;
}
card->dev = dev;
card->owner = THIS_MODULE;
card->dai_link = dai_link;
card->num_links = 1;
card->fully_routed = true;
ret = snd_soc_fixup_dai_links_platform_name(card, pname);
if (ret)
return ret;
return devm_snd_soc_register_card(dev, card);
}
static const struct platform_device_id avs_i2s_test_driver_ids[] = {
{
.name = "avs_i2s_test",
},
{},
};
MODULE_DEVICE_TABLE(platform, avs_i2s_test_driver_ids);
static struct platform_driver avs_i2s_test_driver = {
.probe = avs_i2s_test_probe,
.driver = {
.name = "avs_i2s_test",
.pm = &snd_soc_pm_ops,
},
.id_table = avs_i2s_test_driver_ids,
};
module_platform_driver(avs_i2s_test_driver);
MODULE_DESCRIPTION("Intel i2s test machine driver");
MODULE_LICENSE("GPL");
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