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 SND_SOC_DAILINK_DEFS(analog, 27 DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.0")), 28 DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-hifi")), 29 DAILINK_COMP_ARRAY(COMP_EMPTY())); 30 31 SND_SOC_DAILINK_DEFS(iec958, 32 DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.1")), 33 DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-aux")), 34 DAILINK_COMP_ARRAY(COMP_EMPTY())); 35 36 static struct snd_soc_dai_link pcm030_fabric_dai[] = { 37 { 38 .name = "AC97.0", 39 .stream_name = "AC97 Analog", 40 SND_SOC_DAILINK_REG(analog), 41 }, 42 { 43 .name = "AC97.1", 44 .stream_name = "AC97 IEC958", 45 SND_SOC_DAILINK_REG(iec958), 46 }, 47 }; 48 49 static struct snd_soc_card pcm030_card = { 50 .name = "pcm030", 51 .owner = THIS_MODULE, 52 .dai_link = pcm030_fabric_dai, 53 .num_links = ARRAY_SIZE(pcm030_fabric_dai), 54 }; 55 56 static int pcm030_fabric_probe(struct platform_device *op) 57 { 58 struct device_node *np = op->dev.of_node; 59 struct device_node *platform_np; 60 struct snd_soc_card *card = &pcm030_card; 61 struct pcm030_audio_data *pdata; 62 struct snd_soc_dai_link *dai_link; 63 int ret; 64 int i; 65 66 if (!of_machine_is_compatible("phytec,pcm030")) 67 return -ENODEV; 68 69 pdata = devm_kzalloc(&op->dev, sizeof(struct pcm030_audio_data), 70 GFP_KERNEL); 71 if (!pdata) 72 return -ENOMEM; 73 74 card->dev = &op->dev; 75 76 pdata->card = card; 77 78 platform_np = of_parse_phandle(np, "asoc-platform", 0); 79 if (!platform_np) { 80 dev_err(&op->dev, "ac97 not registered\n"); 81 return -ENODEV; 82 } 83 84 for_each_card_prelinks(card, i, dai_link) 85 dai_link->platforms->of_node = platform_np; 86 87 ret = request_module("snd-soc-wm9712"); 88 if (ret) 89 dev_err(&op->dev, "request_module returned: %d\n", ret); 90 91 pdata->codec_device = platform_device_alloc("wm9712-codec", -1); 92 if (!pdata->codec_device) 93 dev_err(&op->dev, "platform_device_alloc() failed\n"); 94 95 ret = platform_device_add(pdata->codec_device); 96 if (ret) { 97 dev_err(&op->dev, "platform_device_add() failed: %d\n", ret); 98 platform_device_put(pdata->codec_device); 99 } 100 101 ret = snd_soc_register_card(card); 102 if (ret) { 103 dev_err(&op->dev, "snd_soc_register_card() failed: %d\n", ret); 104 platform_device_unregister(pdata->codec_device); 105 } 106 107 platform_set_drvdata(op, pdata); 108 return ret; 109 110 } 111 112 static int pcm030_fabric_remove(struct platform_device *op) 113 { 114 struct pcm030_audio_data *pdata = platform_get_drvdata(op); 115 116 snd_soc_unregister_card(pdata->card); 117 platform_device_unregister(pdata->codec_device); 118 119 return 0; 120 } 121 122 static const struct of_device_id pcm030_audio_match[] = { 123 { .compatible = "phytec,pcm030-audio-fabric", }, 124 {} 125 }; 126 MODULE_DEVICE_TABLE(of, pcm030_audio_match); 127 128 static struct platform_driver pcm030_fabric_driver = { 129 .probe = pcm030_fabric_probe, 130 .remove = pcm030_fabric_remove, 131 .driver = { 132 .name = DRV_NAME, 133 .of_match_table = pcm030_audio_match, 134 }, 135 }; 136 137 module_platform_driver(pcm030_fabric_driver); 138 139 140 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>"); 141 MODULE_DESCRIPTION(DRV_NAME ": mpc5200 pcm030 fabric driver"); 142 MODULE_LICENSE("GPL"); 143 144