sound/soc/fsl/pcm030-audio-fabric.c

   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