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1// SPDX-License-Identifier: GPL-2.0-only2//3// Copyright(c) 2021-2022 Intel Corporation4//5// Authors: Cezary Rojewski <cezary.rojewski@intel.com>6// Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>7//8 9#include <linux/module.h>10#include <sound/pcm.h>11#include <sound/pcm_params.h>12#include <sound/soc.h>13#include <sound/soc-acpi.h>14#include <sound/soc-dapm.h>15#include "../utils.h"16 17static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,18 int tdm_slot, struct snd_soc_dai_link **dai_link)19{20 struct snd_soc_dai_link_component *platform;21 struct snd_soc_dai_link *dl;22 23 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);24 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);25 if (!dl || !platform)26 return -ENOMEM;27 28 platform->name = platform_name;29 30 dl->name = devm_kasprintf(dev, GFP_KERNEL,31 AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot));32 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);33 if (!dl->name || !dl->cpus)34 return -ENOMEM;35 36 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,37 AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot));38 dl->codecs = &snd_soc_dummy_dlc;39 if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)40 return -ENOMEM;41 42 dl->num_cpus = 1;43 dl->num_codecs = 1;44 dl->platforms = platform;45 dl->num_platforms = 1;46 dl->id = 0;47 dl->nonatomic = 1;48 dl->no_pcm = 1;49 dl->dpcm_capture = 1;50 dl->dpcm_playback = 1;51 52 *dai_link = dl;53 54 return 0;55}56 57static int avs_i2s_test_probe(struct platform_device *pdev)58{59 struct snd_soc_dai_link *dai_link;60 struct snd_soc_acpi_mach *mach;61 struct snd_soc_card *card;62 struct device *dev = &pdev->dev;63 const char *pname;64 int ssp_port, tdm_slot, ret;65 66 mach = dev_get_platdata(dev);67 pname = mach->mach_params.platform;68 69 if (!avs_mach_singular_ssp(mach)) {70 dev_err(dev, "Invalid SSP configuration\n");71 return -EINVAL;72 }73 ssp_port = avs_mach_ssp_port(mach);74 75 if (!avs_mach_singular_tdm(mach, ssp_port)) {76 dev_err(dev, "Invalid TDM configuration\n");77 return -EINVAL;78 }79 tdm_slot = avs_mach_ssp_tdm(mach, ssp_port);80 81 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);82 if (!card)83 return -ENOMEM;84 85 card->name = devm_kasprintf(dev, GFP_KERNEL,86 AVS_STRING_FMT("ssp", "-loopback", ssp_port, tdm_slot));87 if (!card->name)88 return -ENOMEM;89 90 ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link);91 if (ret) {92 dev_err(dev, "Failed to create dai link: %d\n", ret);93 return ret;94 }95 96 card->dev = dev;97 card->owner = THIS_MODULE;98 card->dai_link = dai_link;99 card->num_links = 1;100 card->fully_routed = true;101 102 ret = snd_soc_fixup_dai_links_platform_name(card, pname);103 if (ret)104 return ret;105 106 return devm_snd_soc_register_card(dev, card);107}108 109static const struct platform_device_id avs_i2s_test_driver_ids[] = {110 {111 .name = "avs_i2s_test",112 },113 {},114};115MODULE_DEVICE_TABLE(platform, avs_i2s_test_driver_ids);116 117static struct platform_driver avs_i2s_test_driver = {118 .probe = avs_i2s_test_probe,119 .driver = {120 .name = "avs_i2s_test",121 .pm = &snd_soc_pm_ops,122 },123 .id_table = avs_i2s_test_driver_ids,124};125 126module_platform_driver(avs_i2s_test_driver);127 128MODULE_DESCRIPTION("Intel i2s test machine driver");129MODULE_LICENSE("GPL");130