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 static 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                 .codec_name = "ab8500-codec.0",
  37                 .init = mop500_ab8500_machine_init,
  38                 .ops = mop500_ab8500_ops,
  39         },
  40         {
  41                 .name = "ab8500_1",
  42                 .stream_name = "ab8500_1",
  43                 .cpu_dai_name = "ux500-msp-i2s.3",
  44                 .codec_dai_name = "ab8500-codec-dai.1",
  45                 .codec_name = "ab8500-codec.0",
  46                 .init = NULL,
  47                 .ops = mop500_ab8500_ops,
  48         },
  49 };
  50
  51 static struct snd_soc_card mop500_card = {
  52         .name = "MOP500-card",
  53         .owner = THIS_MODULE,
  54         .probe = NULL,
  55         .dai_link = mop500_dai_links,
  56         .num_links = ARRAY_SIZE(mop500_dai_links),
  57 };
  58
  59 static void mop500_of_node_put(void)
  60 {
  61         int i;
  62
  63         for (i = 0; i < 2; i++) {
  64                 of_node_put(mop500_dai_links[i].cpu_of_node);
  65                 of_node_put(mop500_dai_links[i].codec_of_node);
  66         }
  67 }
  68
  69 static int mop500_of_probe(struct platform_device *pdev,
  70                            struct device_node *np)
  71 {
  72         struct device_node *codec_np, *msp_np[2];
  73         int i;
  74
  75         msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0);
  76         msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1);
  77         codec_np  = of_parse_phandle(np, "stericsson,audio-codec", 0);
  78
  79         if (!(msp_np[0] && msp_np[1] && codec_np)) {
  80                 dev_err(&pdev->dev, "Phandle missing or invalid\n");
  81                 mop500_of_node_put();
  82                 return -EINVAL;
  83         }
  84
  85         for (i = 0; i < 2; i++) {
  86                 mop500_dai_links[i].cpu_of_node = msp_np[i];
  87                 mop500_dai_links[i].cpu_dai_name = NULL;
  88                 mop500_dai_links[i].codec_of_node = codec_np;
  89                 mop500_dai_links[i].codec_name = NULL;
  90         }
  91
  92         snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name");
  93
  94         return 0;
  95 }
  96
  97 static int mop500_probe(struct platform_device *pdev)
  98 {
  99         struct device_node *np = pdev->dev.of_node;
 100         int ret;
 101
 102         dev_dbg(&pdev->dev, "%s: Enter.\n", __func__);
 103
 104         mop500_card.dev = &pdev->dev;
 105
 106         if (np) {
 107                 ret = mop500_of_probe(pdev, np);
 108                 if (ret)
 109                         return ret;
 110         }
 111
 112         dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n",
 113                 __func__, mop500_card.name);
 114         platform_set_drvdata(pdev, &mop500_card);
 115
 116         snd_soc_card_set_drvdata(&mop500_card, NULL);
 117
 118         dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n",
 119                 __func__, mop500_card.name, mop500_card.num_links);
 120         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n",
 121                 __func__, mop500_card.name, mop500_card.dai_link[0].name);
 122         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n",
 123                 __func__, mop500_card.name,
 124                 mop500_card.dai_link[0].stream_name);
 125
 126         ret = snd_soc_register_card(&mop500_card);
 127         if (ret)
 128                 dev_err(&pdev->dev,
 129                         "Error: snd_soc_register_card failed (%d)!\n", ret);
 130
 131         return ret;
 132 }
 133
 134 static int mop500_remove(struct platform_device *pdev)
 135 {
 136         struct snd_soc_card *mop500_card = platform_get_drvdata(pdev);
 137
 138         pr_debug("%s: Enter.\n", __func__);
 139
 140         snd_soc_unregister_card(mop500_card);
 141         mop500_ab8500_remove(mop500_card);
 142         mop500_of_node_put();
 143
 144         return 0;
 145 }
 146
 147 static const struct of_device_id snd_soc_mop500_match[] = {
 148         { .compatible = "stericsson,snd-soc-mop500", },
 149         {},
 150 };
 151 MODULE_DEVICE_TABLE(of, snd_soc_mop500_match);
 152
 153 static struct platform_driver snd_soc_mop500_driver = {
 154         .driver = {
 155                 .name = "snd-soc-mop500",
 156                 .of_match_table = snd_soc_mop500_match,
 157         },
 158         .probe = mop500_probe,
 159         .remove = mop500_remove,
 160 };
 161
 162 module_platform_driver(snd_soc_mop500_driver);