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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | /* * Phytec pcm030 driver for the PSC of the Freescale MPC52xx * configured as AC97 interface * * Copyright 2008 Jon Smirl, Digispeaker * Author: Jon Smirl <jonsmirl@gmail.com> * * This file is licensed under the terms of the GNU General Public License * version 2. This program is licensed "as is" without any warranty of any * kind, whether express or implied. */ #include <linux/init.h> #include <linux/module.h> #include <linux/device.h> #include <linux/of_device.h> #include <linux/of_platform.h> #include <sound/soc.h> #include "mpc5200_dma.h" #define DRV_NAME "pcm030-audio-fabric" struct pcm030_audio_data { struct snd_soc_card *card; struct platform_device *codec_device; }; static struct snd_soc_dai_link pcm030_fabric_dai[] = { { .name = "AC97.0", .stream_name = "AC97 Analog", .codec_dai_name = "wm9712-hifi", .cpu_dai_name = "mpc5200-psc-ac97.0", .codec_name = "wm9712-codec", }, { .name = "AC97.1", .stream_name = "AC97 IEC958", .codec_dai_name = "wm9712-aux", .cpu_dai_name = "mpc5200-psc-ac97.1", .codec_name = "wm9712-codec", }, }; static struct snd_soc_card pcm030_card = { .name = "pcm030", .owner = THIS_MODULE, .dai_link = pcm030_fabric_dai, .num_links = ARRAY_SIZE(pcm030_fabric_dai), }; static int pcm030_fabric_probe(struct platform_device *op) { struct device_node *np = op->dev.of_node; struct device_node *platform_np; struct snd_soc_card *card = &pcm030_card; struct pcm030_audio_data *pdata; int ret; int i; if (!of_machine_is_compatible("phytec,pcm030")) return -ENODEV; pdata = devm_kzalloc(&op->dev, sizeof(struct pcm030_audio_data), GFP_KERNEL); if (!pdata) return -ENOMEM; card->dev = &op->dev; pdata->card = card; platform_np = of_parse_phandle(np, "asoc-platform", 0); if (!platform_np) { dev_err(&op->dev, "ac97 not registered\n"); return -ENODEV; } for (i = 0; i < card->num_links; i++) card->dai_link[i].platform_of_node = platform_np; ret = request_module("snd-soc-wm9712"); if (ret) dev_err(&op->dev, "request_module returned: %d\n", ret); pdata->codec_device = platform_device_alloc("wm9712-codec", -1); if (!pdata->codec_device) dev_err(&op->dev, "platform_device_alloc() failed\n"); ret = platform_device_add(pdata->codec_device); if (ret) dev_err(&op->dev, "platform_device_add() failed: %d\n", ret); ret = snd_soc_register_card(card); if (ret) dev_err(&op->dev, "snd_soc_register_card() failed: %d\n", ret); platform_set_drvdata(op, pdata); return ret; } static int pcm030_fabric_remove(struct platform_device *op) { struct pcm030_audio_data *pdata = platform_get_drvdata(op); int ret; ret = snd_soc_unregister_card(pdata->card); platform_device_unregister(pdata->codec_device); return ret; } static const struct of_device_id pcm030_audio_match[] = { { .compatible = "phytec,pcm030-audio-fabric", }, {} }; MODULE_DEVICE_TABLE(of, pcm030_audio_match); static struct platform_driver pcm030_fabric_driver = { .probe = pcm030_fabric_probe, .remove = pcm030_fabric_remove, .driver = { .name = DRV_NAME, .of_match_table = pcm030_audio_match, }, }; module_platform_driver(pcm030_fabric_driver); MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>"); MODULE_DESCRIPTION(DRV_NAME ": mpc5200 pcm030 fabric driver"); MODULE_LICENSE("GPL"); |