1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // Phytec pcm030 driver for the PSC of the Freescale MPC52xx 4 // configured as AC97 interface 5 // 6 // Copyright 2008 Jon Smirl, Digispeaker 7 // Author: Jon Smirl <jonsmirl@gmail.com> 8 9 #include <linux/init.h> 10 #include <linux/module.h> 11 #include <linux/device.h> 12 #include <linux/of_device.h> 13 #include <linux/of_platform.h> 14 15 #include <sound/soc.h> 16 17 #include "mpc5200_dma.h" 18 19 #define DRV_NAME "pcm030-audio-fabric" 20 21 struct pcm030_audio_data { 22 struct snd_soc_card *card; 23 struct platform_device *codec_device; 24 }; 25 26 static struct snd_soc_dai_link pcm030_fabric_dai[] = { 27 { 28 .name = "AC97.0", 29 .stream_name = "AC97 Analog", 30 .codec_dai_name = "wm9712-hifi", 31 .cpu_dai_name = "mpc5200-psc-ac97.0", 32 .codec_name = "wm9712-codec", 33 }, 34 { 35 .name = "AC97.1", 36 .stream_name = "AC97 IEC958", 37 .codec_dai_name = "wm9712-aux", 38 .cpu_dai_name = "mpc5200-psc-ac97.1", 39 .codec_name = "wm9712-codec", 40 }, 41 }; 42 43 static struct snd_soc_card pcm030_card = { 44 .name = "pcm030", 45 .owner = THIS_MODULE, 46 .dai_link = pcm030_fabric_dai, 47 .num_links = ARRAY_SIZE(pcm030_fabric_dai), 48 }; 49 50 static int pcm030_fabric_probe(struct platform_device *op) 51 { 52 struct device_node *np = op->dev.of_node; 53 struct device_node *platform_np; 54 struct snd_soc_card *card = &pcm030_card; 55 struct pcm030_audio_data *pdata; 56 struct snd_soc_dai_link *dai_link; 57 int ret; 58 int i; 59 60 if (!of_machine_is_compatible("phytec,pcm030")) 61 return -ENODEV; 62 63 pdata = devm_kzalloc(&op->dev, sizeof(struct pcm030_audio_data), 64 GFP_KERNEL); 65 if (!pdata) 66 return -ENOMEM; 67 68 card->dev = &op->dev; 69 70 pdata->card = card; 71 72 platform_np = of_parse_phandle(np, "asoc-platform", 0); 73 if (!platform_np) { 74 dev_err(&op->dev, "ac97 not registered\n"); 75 return -ENODEV; 76 } 77 78 for_each_card_prelinks(card, i, dai_link) 79 dai_link->platform_of_node = platform_np; 80 81 ret = request_module("snd-soc-wm9712"); 82 if (ret) 83 dev_err(&op->dev, "request_module returned: %d\n", ret); 84 85 pdata->codec_device = platform_device_alloc("wm9712-codec", -1); 86 if (!pdata->codec_device) 87 dev_err(&op->dev, "platform_device_alloc() failed\n"); 88 89 ret = platform_device_add(pdata->codec_device); 90 if (ret) 91 dev_err(&op->dev, "platform_device_add() failed: %d\n", ret); 92 93 ret = snd_soc_register_card(card); 94 if (ret) 95 dev_err(&op->dev, "snd_soc_register_card() failed: %d\n", ret); 96 97 platform_set_drvdata(op, pdata); 98 99 return ret; 100 } 101 102 static int pcm030_fabric_remove(struct platform_device *op) 103 { 104 struct pcm030_audio_data *pdata = platform_get_drvdata(op); 105 int ret; 106 107 ret = snd_soc_unregister_card(pdata->card); 108 platform_device_unregister(pdata->codec_device); 109 110 return ret; 111 } 112 113 static const struct of_device_id pcm030_audio_match[] = { 114 { .compatible = "phytec,pcm030-audio-fabric", }, 115 {} 116 }; 117 MODULE_DEVICE_TABLE(of, pcm030_audio_match); 118 119 static struct platform_driver pcm030_fabric_driver = { 120 .probe = pcm030_fabric_probe, 121 .remove = pcm030_fabric_remove, 122 .driver = { 123 .name = DRV_NAME, 124 .of_match_table = pcm030_audio_match, 125 }, 126 }; 127 128 module_platform_driver(pcm030_fabric_driver); 129 130 131 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>"); 132 MODULE_DESCRIPTION(DRV_NAME ": mpc5200 pcm030 fabric driver"); 133 MODULE_LICENSE("GPL"); 134 135