1 // SPDX-License-Identifier: GPL-2.0+ 2 // 3 // Machine driver for AMD Renoir platform using DMIC 4 // 5 //Copyright 2020 Advanced Micro Devices, Inc. 6 7 #include <sound/soc.h> 8 #include <sound/soc-dapm.h> 9 #include <linux/module.h> 10 #include <sound/pcm.h> 11 #include <sound/pcm_params.h> 12 #include <linux/io.h> 13 14 #include "rn_acp3x.h" 15 16 #define DRV_NAME "acp_pdm_mach" 17 18 SND_SOC_DAILINK_DEF(acp_pdm, 19 DAILINK_COMP_ARRAY(COMP_CPU("acp_rn_pdm_dma.0"))); 20 21 SND_SOC_DAILINK_DEF(dmic_codec, 22 DAILINK_COMP_ARRAY(COMP_CODEC("dmic-codec.0", 23 "dmic-hifi"))); 24 25 SND_SOC_DAILINK_DEF(platform, 26 DAILINK_COMP_ARRAY(COMP_PLATFORM("acp_rn_pdm_dma.0"))); 27 28 static struct snd_soc_dai_link acp_dai_pdm[] = { 29 { 30 .name = "acp3x-dmic-capture", 31 .stream_name = "DMIC capture", 32 .capture_only = 1, 33 SND_SOC_DAILINK_REG(acp_pdm, dmic_codec, platform), 34 }, 35 }; 36 37 static struct snd_soc_card acp_card = { 38 .name = "acp", 39 .owner = THIS_MODULE, 40 .dai_link = acp_dai_pdm, 41 .num_links = 1, 42 }; 43 44 static int acp_probe(struct platform_device *pdev) 45 { 46 int ret; 47 struct snd_soc_card *card; 48 49 card = &acp_card; 50 acp_card.dev = &pdev->dev; 51 52 platform_set_drvdata(pdev, card); 53 ret = devm_snd_soc_register_card(&pdev->dev, card); 54 if (ret) { 55 return dev_err_probe(&pdev->dev, ret, 56 "snd_soc_register_card(%s) failed\n", 57 card->name); 58 } 59 return 0; 60 } 61 62 static struct platform_driver acp_mach_driver = { 63 .driver = { 64 .name = "acp_pdm_mach", 65 .pm = &snd_soc_pm_ops, 66 }, 67 .probe = acp_probe, 68 }; 69 70 module_platform_driver(acp_mach_driver); 71 72 MODULE_AUTHOR("Vijendar.Mukunda@amd.com"); 73 MODULE_DESCRIPTION("AMD Renoir support for DMIC"); 74 MODULE_LICENSE("GPL v2"); 75 MODULE_ALIAS("platform:" DRV_NAME); 76