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 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_del(pdata->codec_device);
 105                 platform_device_put(pdata->codec_device);
 106         }
 107
 108         platform_set_drvdata(op, pdata);
 109         return ret;
 110
 111 }
 112
 113 static int pcm030_fabric_remove(struct platform_device *op)
 114 {
 115         struct pcm030_audio_data *pdata = platform_get_drvdata(op);
 116         int ret;
 117
 118         ret = snd_soc_unregister_card(pdata->card);
 119         platform_device_unregister(pdata->codec_device);
 120
 121         return ret;
 122 }
 123
 124 static const struct of_device_id pcm030_audio_match[] = {
 125         { .compatible = "phytec,pcm030-audio-fabric", },
 126         {}
 127 };
 128 MODULE_DEVICE_TABLE(of, pcm030_audio_match);
 129
 130 static struct platform_driver pcm030_fabric_driver = {
 131         .probe          = pcm030_fabric_probe,
 132         .remove         = pcm030_fabric_remove,
 133         .driver         = {
 134                 .name   = DRV_NAME,
 135                 .of_match_table    = pcm030_audio_match,
 136         },
 137 };
 138
 139 module_platform_driver(pcm030_fabric_driver);
 140
 141
 142 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
 143 MODULE_DESCRIPTION(DRV_NAME ": mpc5200 pcm030 fabric driver");
 144 MODULE_LICENSE("GPL");
 145