sound/soc/ux500/mop500.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) ST-Ericsson SA 2012
   4  *
   5  * Author: Ola Lilja (ola.o.lilja@stericsson.com)
   6  *         for ST-Ericsson.
   7  *
   8  * License terms:
   9  */
  10
  11 #include <asm/mach-types.h>
  12
  13 #include <linux/module.h>
  14 #include <linux/io.h>
  15 #include <linux/spi/spi.h>
  16 #include <linux/of.h>
  17
  18 #include <sound/soc.h>
  19 #include <sound/initval.h>
  20
  21 #include "ux500_pcm.h"
  22 #include "ux500_msp_dai.h"
  23
  24 #include "mop500_ab8500.h"
  25
  26 /* Define the whole MOP500 soundcard, linking platform to the codec-drivers  */
  27 static struct snd_soc_dai_link mop500_dai_links[] = {
  28         {
  29                 .name = "ab8500_0",
  30                 .stream_name = "ab8500_0",
  31                 .cpu_dai_name = "ux500-msp-i2s.1",
  32                 .codec_dai_name = "ab8500-codec-dai.0",
  33                 .platform_name = "ux500-msp-i2s.1",
  34                 .codec_name = "ab8500-codec.0",
  35                 .init = mop500_ab8500_machine_init,
  36                 .ops = mop500_ab8500_ops,
  37         },
  38         {
  39                 .name = "ab8500_1",
  40                 .stream_name = "ab8500_1",
  41                 .cpu_dai_name = "ux500-msp-i2s.3",
  42                 .codec_dai_name = "ab8500-codec-dai.1",
  43                 .platform_name = "ux500-msp-i2s.3",
  44                 .codec_name = "ab8500-codec.0",
  45                 .init = NULL,
  46                 .ops = mop500_ab8500_ops,
  47         },
  48 };
  49
  50 static struct snd_soc_card mop500_card = {
  51         .name = "MOP500-card",
  52         .owner = THIS_MODULE,
  53         .probe = NULL,
  54         .dai_link = mop500_dai_links,
  55         .num_links = ARRAY_SIZE(mop500_dai_links),
  56 };
  57
  58 static void mop500_of_node_put(void)
  59 {
  60         int i;
  61
  62         for (i = 0; i < 2; i++) {
  63                 of_node_put(mop500_dai_links[i].cpu_of_node);
  64                 of_node_put(mop500_dai_links[i].codec_of_node);
  65         }
  66 }
  67
  68 static int mop500_of_probe(struct platform_device *pdev,
  69                            struct device_node *np)
  70 {
  71         struct device_node *codec_np, *msp_np[2];
  72         int i;
  73
  74         msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0);
  75         msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1);
  76         codec_np  = of_parse_phandle(np, "stericsson,audio-codec", 0);
  77
  78         if (!(msp_np[0] && msp_np[1] && codec_np)) {
  79                 dev_err(&pdev->dev, "Phandle missing or invalid\n");
  80                 mop500_of_node_put();
  81                 return -EINVAL;
  82         }
  83
  84         for (i = 0; i < 2; i++) {
  85                 mop500_dai_links[i].cpu_of_node = msp_np[i];
  86                 mop500_dai_links[i].cpu_dai_name = NULL;
  87                 mop500_dai_links[i].platform_of_node = msp_np[i];
  88                 mop500_dai_links[i].platform_name = NULL;
  89                 mop500_dai_links[i].codec_of_node = codec_np;
  90                 mop500_dai_links[i].codec_name = NULL;
  91         }
  92
  93         snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name");
  94
  95         return 0;
  96 }
  97
  98 static int mop500_probe(struct platform_device *pdev)
  99 {
 100         struct device_node *np = pdev->dev.of_node;
 101         int ret;
 102
 103         dev_dbg(&pdev->dev, "%s: Enter.\n", __func__);
 104
 105         mop500_card.dev = &pdev->dev;
 106
 107         if (np) {
 108                 ret = mop500_of_probe(pdev, np);
 109                 if (ret)
 110                         return ret;
 111         }
 112
 113         dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n",
 114                 __func__, mop500_card.name);
 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);
 163
 164 MODULE_LICENSE("GPL v2");
 165 MODULE_DESCRIPTION("ASoC MOP500 board driver");
 166 MODULE_AUTHOR("Ola Lilja");