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                 .platform_name = "ux500-msp-i2s.1",
  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-msp-i2s.3",
  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         .owner = THIS_MODULE,
  56         .probe = NULL,
  57         .dai_link = mop500_dai_links,
  58         .num_links = ARRAY_SIZE(mop500_dai_links),
  59 };
  60
  61 static void mop500_of_node_put(void)
  62 {
  63         int i;
  64
  65         for (i = 0; i < 2; i++) {
  66                 of_node_put(mop500_dai_links[i].cpu_of_node);
  67                 of_node_put(mop500_dai_links[i].codec_of_node);
  68         }
  69 }
  70
  71 static int mop500_of_probe(struct platform_device *pdev,
  72                            struct device_node *np)
  73 {
  74         struct device_node *codec_np, *msp_np[2];
  75         int i;
  76
  77         msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0);
  78         msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1);
  79         codec_np  = of_parse_phandle(np, "stericsson,audio-codec", 0);
  80
  81         if (!(msp_np[0] && msp_np[1] && codec_np)) {
  82                 dev_err(&pdev->dev, "Phandle missing or invalid\n");
  83                 mop500_of_node_put();
  84                 return -EINVAL;
  85         }
  86
  87         for (i = 0; i < 2; i++) {
  88                 mop500_dai_links[i].cpu_of_node = msp_np[i];
  89                 mop500_dai_links[i].cpu_dai_name = NULL;
  90                 mop500_dai_links[i].platform_of_node = msp_np[i];
  91                 mop500_dai_links[i].platform_name = NULL;
  92                 mop500_dai_links[i].codec_of_node = codec_np;
  93                 mop500_dai_links[i].codec_name = NULL;
  94         }
  95
  96         snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name");
  97
  98         return 0;
  99 }
 100
 101 static int mop500_probe(struct platform_device *pdev)
 102 {
 103         struct device_node *np = pdev->dev.of_node;
 104         int ret;
 105
 106         dev_dbg(&pdev->dev, "%s: Enter.\n", __func__);
 107
 108         mop500_card.dev = &pdev->dev;
 109
 110         if (np) {
 111                 ret = mop500_of_probe(pdev, np);
 112                 if (ret)
 113                         return ret;
 114         }
 115
 116         dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n",
 117                 __func__, mop500_card.name);
 118
 119         snd_soc_card_set_drvdata(&mop500_card, NULL);
 120
 121         dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n",
 122                 __func__, mop500_card.name, mop500_card.num_links);
 123         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n",
 124                 __func__, mop500_card.name, mop500_card.dai_link[0].name);
 125         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n",
 126                 __func__, mop500_card.name,
 127                 mop500_card.dai_link[0].stream_name);
 128
 129         ret = snd_soc_register_card(&mop500_card);
 130         if (ret)
 131                 dev_err(&pdev->dev,
 132                         "Error: snd_soc_register_card failed (%d)!\n", ret);
 133
 134         return ret;
 135 }
 136
 137 static int mop500_remove(struct platform_device *pdev)
 138 {
 139         struct snd_soc_card *mop500_card = platform_get_drvdata(pdev);
 140
 141         pr_debug("%s: Enter.\n", __func__);
 142
 143         snd_soc_unregister_card(mop500_card);
 144         mop500_ab8500_remove(mop500_card);
 145         mop500_of_node_put();
 146
 147         return 0;
 148 }
 149
 150 static const struct of_device_id snd_soc_mop500_match[] = {
 151         { .compatible = "stericsson,snd-soc-mop500", },
 152         {},
 153 };
 154 MODULE_DEVICE_TABLE(of, snd_soc_mop500_match);
 155
 156 static struct platform_driver snd_soc_mop500_driver = {
 157         .driver = {
 158                 .name = "snd-soc-mop500",
 159                 .of_match_table = snd_soc_mop500_match,
 160         },
 161         .probe = mop500_probe,
 162         .remove = mop500_remove,
 163 };
 164
 165 module_platform_driver(snd_soc_mop500_driver);
 166
 167 MODULE_LICENSE("GPL v2");
 168 MODULE_DESCRIPTION("ASoC MOP500 board driver");
 169 MODULE_AUTHOR("Ola Lilja");