sound/soc/ux500/mop500.c

   1 /*
   2  * Copyright (C) ST-Ericsson SA 2012
   3  *
   4  * Author: Ola Lilja (ola.o.lilja@stericsson.com)
   5  *         for ST-Ericsson.
   6  *
   7  * License terms:
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as published
  11  * by the Free Software Foundation.
  12  */
  13
  14 #include <asm/mach-types.h>
  15
  16 #include <linux/module.h>
  17 #include <linux/io.h>
  18 #include <linux/spi/spi.h>
  19 #include <linux/of.h>
  20
  21 #include <sound/soc.h>
  22 #include <sound/initval.h>
  23
  24 #include "ux500_pcm.h"
  25 #include "ux500_msp_dai.h"
  26
  27 #include <mop500_ab8500.h>
  28
  29 /* Define the whole MOP500 soundcard, linking platform to the codec-drivers  */
  30 struct snd_soc_dai_link mop500_dai_links[] = {
  31         {
  32                 .name = "ab8500_0",
  33                 .stream_name = "ab8500_0",
  34                 .cpu_dai_name = "ux500-msp-i2s.1",
  35                 .codec_dai_name = "ab8500-codec-dai.0",
  36                 .platform_name = "ux500-pcm.0",
  37                 .codec_name = "ab8500-codec.0",
  38                 .init = mop500_ab8500_machine_init,
  39                 .ops = mop500_ab8500_ops,
  40         },
  41         {
  42                 .name = "ab8500_1",
  43                 .stream_name = "ab8500_1",
  44                 .cpu_dai_name = "ux500-msp-i2s.3",
  45                 .codec_dai_name = "ab8500-codec-dai.1",
  46                 .platform_name = "ux500-pcm.0",
  47                 .codec_name = "ab8500-codec.0",
  48                 .init = NULL,
  49                 .ops = mop500_ab8500_ops,
  50         },
  51 };
  52
  53 static struct snd_soc_card mop500_card = {
  54         .name = "MOP500-card",
  55         .probe = NULL,
  56         .dai_link = mop500_dai_links,
  57         .num_links = ARRAY_SIZE(mop500_dai_links),
  58 };
  59
  60 static int __devinit mop500_of_probe(struct platform_device *pdev,
  61                                 struct device_node *np)
  62 {
  63         struct device_node *codec_np, *msp_np[2];
  64         int i;
  65
  66         msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0);
  67         msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1);
  68         codec_np  = of_parse_phandle(np, "stericsson,audio-codec", 0);
  69
  70         if (!(msp_np[0] && msp_np[1] && codec_np)) {
  71                 dev_err(&pdev->dev, "Phandle missing or invalid\n");
  72                 return -EINVAL;
  73         }
  74
  75         for (i = 0; i < 2; i++) {
  76                 mop500_dai_links[i].cpu_of_node = msp_np[i];
  77                 mop500_dai_links[i].cpu_dai_name = NULL;
  78                 mop500_dai_links[i].codec_of_node = codec_np;
  79                 mop500_dai_links[i].codec_name = NULL;
  80         }
  81
  82         snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name");
  83
  84         return 0;
  85 }
  86 static int __devinit mop500_probe(struct platform_device *pdev)
  87 {
  88         struct device_node *np = pdev->dev.of_node;
  89         int ret;
  90
  91         dev_dbg(&pdev->dev, "%s: Enter.\n", __func__);
  92
  93         mop500_card.dev = &pdev->dev;
  94
  95         if (np) {
  96                 ret = mop500_of_probe(pdev, np);
  97                 if (ret)
  98                         return ret;
  99         }
 100
 101         dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n",
 102                 __func__, mop500_card.name);
 103         platform_set_drvdata(pdev, &mop500_card);
 104
 105         snd_soc_card_set_drvdata(&mop500_card, NULL);
 106
 107         dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n",
 108                 __func__, mop500_card.name, mop500_card.num_links);
 109         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n",
 110                 __func__, mop500_card.name, mop500_card.dai_link[0].name);
 111         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n",
 112                 __func__, mop500_card.name,
 113                 mop500_card.dai_link[0].stream_name);
 114
 115         ret = snd_soc_register_card(&mop500_card);
 116         if (ret)
 117                 dev_err(&pdev->dev,
 118                         "Error: snd_soc_register_card failed (%d)!\n", ret);
 119
 120         return ret;
 121 }
 122
 123 static int __devexit mop500_remove(struct platform_device *pdev)
 124 {
 125         struct snd_soc_card *mop500_card = platform_get_drvdata(pdev);
 126
 127         pr_debug("%s: Enter.\n", __func__);
 128
 129         snd_soc_unregister_card(mop500_card);
 130         mop500_ab8500_remove(mop500_card);
 131
 132         return 0;
 133 }
 134
 135 static const struct of_device_id snd_soc_mop500_match[] = {
 136         { .compatible = "stericsson,snd-soc-mop500", },
 137         {},
 138 };
 139
 140 static struct platform_driver snd_soc_mop500_driver = {
 141         .driver = {
 142                 .owner = THIS_MODULE,
 143                 .name = "snd-soc-mop500",
 144                 .of_match_table = snd_soc_mop500_match,
 145         },
 146         .probe = mop500_probe,
 147         .remove = __devexit_p(mop500_remove),
 148 };
 149
 150 module_platform_driver(snd_soc_mop500_driver);