1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // Copyright(c) 2021-2022 Intel Corporation 4 // 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 17 static int avs_create_dai_link(struct device *dev, int ssp_port, int tdm_slot, 18 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 dl->name = devm_kasprintf(dev, GFP_KERNEL, 29 AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot)); 30 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL); 31 if (!dl->name || !dl->cpus) 32 return -ENOMEM; 33 34 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, 35 AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot)); 36 dl->codecs = &snd_soc_dummy_dlc; 37 if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name) 38 return -ENOMEM; 39 40 platform->name = dev_name(dev); 41 dl->num_cpus = 1; 42 dl->num_codecs = 1; 43 dl->platforms = platform; 44 dl->num_platforms = 1; 45 dl->id = 0; 46 dl->nonatomic = 1; 47 dl->no_pcm = 1; 48 49 *dai_link = dl; 50 51 return 0; 52 } 53 54 static int avs_i2s_test_probe(struct platform_device *pdev) 55 { 56 struct snd_soc_dai_link *dai_link; 57 struct snd_soc_acpi_mach *mach; 58 struct avs_mach_pdata *pdata; 59 struct snd_soc_card *card; 60 struct device *dev = &pdev->dev; 61 int ssp_port, tdm_slot, ret; 62 63 mach = dev_get_platdata(dev); 64 pdata = mach->pdata; 65 66 if (!avs_mach_singular_ssp(mach)) { 67 dev_err(dev, "Invalid SSP configuration\n"); 68 return -EINVAL; 69 } 70 ssp_port = avs_mach_ssp_port(mach); 71 72 if (!avs_mach_singular_tdm(mach, ssp_port)) { 73 dev_err(dev, "Invalid TDM configuration\n"); 74 return -EINVAL; 75 } 76 tdm_slot = avs_mach_ssp_tdm(mach, ssp_port); 77 78 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 79 if (!card) 80 return -ENOMEM; 81 82 if (pdata->obsolete_card_names) { 83 card->name = devm_kasprintf(dev, GFP_KERNEL, 84 AVS_STRING_FMT("ssp", "-loopback", ssp_port, tdm_slot)); 85 } else { 86 card->driver_name = "avs_i2s_test"; 87 card->long_name = card->name = devm_kasprintf(dev, GFP_KERNEL, 88 AVS_STRING_FMT("AVS I2S TEST-", "", 89 ssp_port, tdm_slot)); 90 } 91 if (!card->name) 92 return -ENOMEM; 93 94 ret = avs_create_dai_link(dev, ssp_port, tdm_slot, &dai_link); 95 if (ret) { 96 dev_err(dev, "Failed to create dai link: %d\n", ret); 97 return ret; 98 } 99 100 card->dev = dev; 101 card->owner = THIS_MODULE; 102 card->dai_link = dai_link; 103 card->num_links = 1; 104 card->fully_routed = true; 105 106 return devm_snd_soc_register_deferrable_card(dev, card); 107 } 108 109 static const struct platform_device_id avs_i2s_test_driver_ids[] = { 110 { 111 .name = "avs_i2s_test", 112 }, 113 {}, 114 }; 115 MODULE_DEVICE_TABLE(platform, avs_i2s_test_driver_ids); 116 117 static 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 }; 125 126 module_platform_driver(avs_i2s_test_driver); 127 128 MODULE_DESCRIPTION("Intel i2s test machine driver"); 129 MODULE_LICENSE("GPL"); 130