1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Machine driver for AMD Yellow Carp platform using DMIC 4 * 5 * Copyright 2021 Advanced Micro Devices, Inc. 6 */ 7 8 #include <sound/soc.h> 9 #include <sound/soc-dapm.h> 10 #include <linux/module.h> 11 #include <sound/pcm.h> 12 #include <sound/pcm_params.h> 13 #include <linux/io.h> 14 #include <linux/dmi.h> 15 #include <linux/acpi.h> 16 17 #include "acp6x.h" 18 19 #define DRV_NAME "acp_yc_mach" 20 21 SND_SOC_DAILINK_DEF(acp6x_pdm, 22 DAILINK_COMP_ARRAY(COMP_CPU("acp_yc_pdm_dma.0"))); 23 24 SND_SOC_DAILINK_DEF(dmic_codec, 25 DAILINK_COMP_ARRAY(COMP_CODEC("dmic-codec.0", 26 "dmic-hifi"))); 27 28 SND_SOC_DAILINK_DEF(pdm_platform, 29 DAILINK_COMP_ARRAY(COMP_PLATFORM("acp_yc_pdm_dma.0"))); 30 31 static struct snd_soc_dai_link acp6x_dai_pdm[] = { 32 { 33 .name = "acp6x-dmic-capture", 34 .stream_name = "DMIC capture", 35 .capture_only = 1, 36 SND_SOC_DAILINK_REG(acp6x_pdm, dmic_codec, pdm_platform), 37 }, 38 }; 39 40 static struct snd_soc_card acp6x_card = { 41 .name = "acp6x", 42 .owner = THIS_MODULE, 43 .dai_link = acp6x_dai_pdm, 44 .num_links = 1, 45 }; 46 47 static const struct dmi_system_id yc_acp_quirk_table[] = { 48 { 49 .driver_data = &acp6x_card, 50 .matches = { 51 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 52 DMI_MATCH(DMI_PRODUCT_NAME, "21D2"), 53 } 54 }, 55 { 56 .driver_data = &acp6x_card, 57 .matches = { 58 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 59 DMI_MATCH(DMI_PRODUCT_NAME, "21D3"), 60 } 61 }, 62 { 63 .driver_data = &acp6x_card, 64 .matches = { 65 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 66 DMI_MATCH(DMI_PRODUCT_NAME, "21D4"), 67 } 68 }, 69 { 70 .driver_data = &acp6x_card, 71 .matches = { 72 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 73 DMI_MATCH(DMI_PRODUCT_NAME, "21D5"), 74 } 75 }, 76 { 77 .driver_data = &acp6x_card, 78 .matches = { 79 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 80 DMI_MATCH(DMI_PRODUCT_NAME, "21CF"), 81 } 82 }, 83 { 84 .driver_data = &acp6x_card, 85 .matches = { 86 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 87 DMI_MATCH(DMI_PRODUCT_NAME, "21CG"), 88 } 89 }, 90 { 91 .driver_data = &acp6x_card, 92 .matches = { 93 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 94 DMI_MATCH(DMI_PRODUCT_NAME, "21CQ"), 95 } 96 }, 97 { 98 .driver_data = &acp6x_card, 99 .matches = { 100 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 101 DMI_MATCH(DMI_PRODUCT_NAME, "21CR"), 102 } 103 }, 104 { 105 .driver_data = &acp6x_card, 106 .matches = { 107 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 108 DMI_MATCH(DMI_PRODUCT_NAME, "21CM"), 109 } 110 }, 111 { 112 .driver_data = &acp6x_card, 113 .matches = { 114 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 115 DMI_MATCH(DMI_PRODUCT_NAME, "21CN"), 116 } 117 }, 118 { 119 .driver_data = &acp6x_card, 120 .matches = { 121 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 122 DMI_MATCH(DMI_PRODUCT_NAME, "21CH"), 123 } 124 }, 125 { 126 .driver_data = &acp6x_card, 127 .matches = { 128 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 129 DMI_MATCH(DMI_PRODUCT_NAME, "21CJ"), 130 } 131 }, 132 { 133 .driver_data = &acp6x_card, 134 .matches = { 135 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 136 DMI_MATCH(DMI_PRODUCT_NAME, "21CK"), 137 } 138 }, 139 { 140 .driver_data = &acp6x_card, 141 .matches = { 142 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 143 DMI_MATCH(DMI_PRODUCT_NAME, "21CL"), 144 } 145 }, 146 {} 147 }; 148 149 static int acp6x_probe(struct platform_device *pdev) 150 { 151 const struct dmi_system_id *dmi_id; 152 struct acp6x_pdm *machine = NULL; 153 struct snd_soc_card *card; 154 struct acpi_device *adev; 155 int ret; 156 157 /* check the parent device's firmware node has _DSD or not */ 158 adev = ACPI_COMPANION(pdev->dev.parent); 159 if (adev) { 160 const union acpi_object *obj; 161 162 if (!acpi_dev_get_property(adev, "AcpDmicConnected", ACPI_TYPE_INTEGER, &obj) && 163 obj->integer.value == 1) 164 platform_set_drvdata(pdev, &acp6x_card); 165 } 166 167 /* check for any DMI overrides */ 168 dmi_id = dmi_first_match(yc_acp_quirk_table); 169 if (dmi_id) 170 platform_set_drvdata(pdev, dmi_id->driver_data); 171 172 card = platform_get_drvdata(pdev); 173 if (!card) 174 return -ENODEV; 175 dev_info(&pdev->dev, "Enabling ACP DMIC support via %s", dmi_id ? "DMI" : "ACPI"); 176 acp6x_card.dev = &pdev->dev; 177 178 snd_soc_card_set_drvdata(card, machine); 179 ret = devm_snd_soc_register_card(&pdev->dev, card); 180 if (ret) { 181 return dev_err_probe(&pdev->dev, ret, 182 "snd_soc_register_card(%s) failed\n", 183 card->name); 184 } 185 return 0; 186 } 187 188 static struct platform_driver acp6x_mach_driver = { 189 .driver = { 190 .name = "acp_yc_mach", 191 .pm = &snd_soc_pm_ops, 192 }, 193 .probe = acp6x_probe, 194 }; 195 196 module_platform_driver(acp6x_mach_driver); 197 198 MODULE_AUTHOR("Vijendar.Mukunda@amd.com"); 199 MODULE_LICENSE("GPL v2"); 200 MODULE_ALIAS("platform:" DRV_NAME); 201