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.h>
  13
  14 #include <sound/soc.h>
  15
  16 #include "mpc5200_dma.h"
  17
  18 #define DRV_NAME "pcm030-audio-fabric"
  19
  20 struct pcm030_audio_data {
  21         struct snd_soc_card *card;
  22         struct platform_device *codec_device;
  23 };
  24
  25 SND_SOC_DAILINK_DEFS(analog,
  26         DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.0")),
  27         DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-hifi")),
  28         DAILINK_COMP_ARRAY(COMP_EMPTY()));
  29
  30 SND_SOC_DAILINK_DEFS(iec958,
  31         DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.1")),
  32         DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-aux")),
  33         DAILINK_COMP_ARRAY(COMP_EMPTY()));
  34
  35 static struct snd_soc_dai_link pcm030_fabric_dai[] = {
  36 {
  37         .name = "AC97.0",
  38         .stream_name = "AC97 Analog",
  39         SND_SOC_DAILINK_REG(analog),
  40 },
  41 {
  42         .name = "AC97.1",
  43         .stream_name = "AC97 IEC958",
  44         SND_SOC_DAILINK_REG(iec958),
  45 },
  46 };
  47
  48 static struct snd_soc_card pcm030_card = {
  49         .name = "pcm030",
  50         .owner = THIS_MODULE,
  51         .dai_link = pcm030_fabric_dai,
  52         .num_links = ARRAY_SIZE(pcm030_fabric_dai),
  53 };
  54
  55 static int pcm030_fabric_probe(struct platform_device *op)
  56 {
  57         struct device_node *np = op->dev.of_node;
  58         struct device_node *platform_np;
  59         struct snd_soc_card *card = &pcm030_card;
  60         struct pcm030_audio_data *pdata;
  61         struct snd_soc_dai_link *dai_link;
  62         int ret;
  63         int i;
  64
  65         if (!of_machine_is_compatible("phytec,pcm030"))
  66                 return -ENODEV;
  67
  68         pdata = devm_kzalloc(&op->dev, sizeof(struct pcm030_audio_data),
  69                              GFP_KERNEL);
  70         if (!pdata)
  71                 return -ENOMEM;
  72
  73         card->dev = &op->dev;
  74
  75         pdata->card = card;
  76
  77         platform_np = of_parse_phandle(np, "asoc-platform", 0);
  78         if (!platform_np) {
  79                 dev_err(&op->dev, "ac97 not registered\n");
  80                 return -ENODEV;
  81         }
  82
  83         for_each_card_prelinks(card, i, dai_link)
  84                 dai_link->platforms->of_node = platform_np;
  85
  86         ret = request_module("snd-soc-wm9712");
  87         if (ret)
  88                 dev_err(&op->dev, "request_module returned: %d\n", ret);
  89
  90         pdata->codec_device = platform_device_alloc("wm9712-codec", -1);
  91         if (!pdata->codec_device)
  92                 dev_err(&op->dev, "platform_device_alloc() failed\n");
  93
  94         ret = platform_device_add(pdata->codec_device);
  95         if (ret) {
  96                 dev_err(&op->dev, "platform_device_add() failed: %d\n", ret);
  97                 platform_device_put(pdata->codec_device);
  98         }
  99
 100         ret = snd_soc_register_card(card);
 101         if (ret) {
 102                 dev_err(&op->dev, "snd_soc_register_card() failed: %d\n", ret);
 103                 platform_device_unregister(pdata->codec_device);
 104         }
 105
 106         platform_set_drvdata(op, pdata);
 107         return ret;
 108
 109 }
 110
 111 static void pcm030_fabric_remove(struct platform_device *op)
 112 {
 113         struct pcm030_audio_data *pdata = platform_get_drvdata(op);
 114
 115         snd_soc_unregister_card(pdata->card);
 116         platform_device_unregister(pdata->codec_device);
 117 }
 118
 119 static const struct of_device_id pcm030_audio_match[] = {
 120         { .compatible = "phytec,pcm030-audio-fabric", },
 121         {}
 122 };
 123 MODULE_DEVICE_TABLE(of, pcm030_audio_match);
 124
 125 static struct platform_driver pcm030_fabric_driver = {
 126         .probe          = pcm030_fabric_probe,
 127         .remove_new     = pcm030_fabric_remove,
 128         .driver         = {
 129                 .name   = DRV_NAME,
 130                 .of_match_table    = pcm030_audio_match,
 131         },
 132 };
 133
 134 module_platform_driver(pcm030_fabric_driver);
 135
 136
 137 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
 138 MODULE_DESCRIPTION(DRV_NAME ": mpc5200 pcm030 fabric driver");
 139 MODULE_LICENSE("GPL");
 140