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 SND_SOC_DAILINK_DEFS(link1,
  28         DAILINK_COMP_ARRAY(COMP_CPU("ux500-msp-i2s.1")),
  29         DAILINK_COMP_ARRAY(COMP_CODEC("ab8500-codec.0", "ab8500-codec-dai.0")),
  30         DAILINK_COMP_ARRAY(COMP_PLATFORM("ux500-msp-i2s.1")));
  31
  32 SND_SOC_DAILINK_DEFS(link2,
  33         DAILINK_COMP_ARRAY(COMP_CPU("ux500-msp-i2s.3")),
  34         DAILINK_COMP_ARRAY(COMP_CODEC("ab8500-codec.0", "ab8500-codec-dai.1")),
  35         DAILINK_COMP_ARRAY(COMP_PLATFORM("ux500-msp-i2s.3")));
  36
  37 static struct snd_soc_dai_link mop500_dai_links[] = {
  38         {
  39                 .name = "ab8500_0",
  40                 .stream_name = "ab8500_0",
  41                 .init = mop500_ab8500_machine_init,
  42                 .ops = mop500_ab8500_ops,
  43                 SND_SOC_DAILINK_REG(link1),
  44         },
  45         {
  46                 .name = "ab8500_1",
  47                 .stream_name = "ab8500_1",
  48                 .init = NULL,
  49                 .ops = mop500_ab8500_ops,
  50                 SND_SOC_DAILINK_REG(link2),
  51         },
  52 };
  53
  54 static struct snd_soc_card mop500_card = {
  55         .name = "MOP500-card",
  56         .owner = THIS_MODULE,
  57         .probe = NULL,
  58         .dai_link = mop500_dai_links,
  59         .num_links = ARRAY_SIZE(mop500_dai_links),
  60 };
  61
  62 static void mop500_of_node_put(void)
  63 {
  64         int i;
  65
  66         for (i = 0; i < 2; i++)
  67                 of_node_put(mop500_dai_links[i].cpus->of_node);
  68
  69         /* Both links use the same codec, which is refcounted only once */
  70         of_node_put(mop500_dai_links[0].codecs->of_node);
  71 }
  72
  73 static int mop500_of_probe(struct platform_device *pdev,
  74                            struct device_node *np)
  75 {
  76         struct device_node *codec_np, *msp_np[2];
  77         int i;
  78
  79         msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0);
  80         msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1);
  81         codec_np  = of_parse_phandle(np, "stericsson,audio-codec", 0);
  82
  83         if (!(msp_np[0] && msp_np[1] && codec_np)) {
  84                 dev_err(&pdev->dev, "Phandle missing or invalid\n");
  85                 for (i = 0; i < 2; i++)
  86                         of_node_put(msp_np[i]);
  87                 of_node_put(codec_np);
  88                 return -EINVAL;
  89         }
  90
  91         for (i = 0; i < 2; i++) {
  92                 mop500_dai_links[i].cpus->of_node = msp_np[i];
  93                 mop500_dai_links[i].cpus->dai_name = NULL;
  94                 mop500_dai_links[i].platforms->of_node = msp_np[i];
  95                 mop500_dai_links[i].platforms->name = NULL;
  96                 mop500_dai_links[i].codecs->of_node = codec_np;
  97                 mop500_dai_links[i].codecs->name = NULL;
  98         }
  99
 100         snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name");
 101
 102         return 0;
 103 }
 104
 105 static int mop500_probe(struct platform_device *pdev)
 106 {
 107         struct device_node *np = pdev->dev.of_node;
 108         int ret;
 109
 110         dev_dbg(&pdev->dev, "%s: Enter.\n", __func__);
 111
 112         mop500_card.dev = &pdev->dev;
 113
 114         if (np) {
 115                 ret = mop500_of_probe(pdev, np);
 116                 if (ret)
 117                         return ret;
 118         }
 119
 120         dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n",
 121                 __func__, mop500_card.name);
 122
 123         snd_soc_card_set_drvdata(&mop500_card, NULL);
 124
 125         dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n",
 126                 __func__, mop500_card.name, mop500_card.num_links);
 127         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n",
 128                 __func__, mop500_card.name, mop500_card.dai_link[0].name);
 129         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n",
 130                 __func__, mop500_card.name,
 131                 mop500_card.dai_link[0].stream_name);
 132
 133         ret = snd_soc_register_card(&mop500_card);
 134         if (ret)
 135                 dev_err(&pdev->dev,
 136                         "Error: snd_soc_register_card failed (%d)!\n", ret);
 137
 138         return ret;
 139 }
 140
 141 static int mop500_remove(struct platform_device *pdev)
 142 {
 143         struct snd_soc_card *mop500_card = platform_get_drvdata(pdev);
 144
 145         pr_debug("%s: Enter.\n", __func__);
 146
 147         snd_soc_unregister_card(mop500_card);
 148         mop500_ab8500_remove(mop500_card);
 149         mop500_of_node_put();
 150
 151         return 0;
 152 }
 153
 154 static const struct of_device_id snd_soc_mop500_match[] = {
 155         { .compatible = "stericsson,snd-soc-mop500", },
 156         {},
 157 };
 158 MODULE_DEVICE_TABLE(of, snd_soc_mop500_match);
 159
 160 static struct platform_driver snd_soc_mop500_driver = {
 161         .driver = {
 162                 .name = "snd-soc-mop500",
 163                 .of_match_table = snd_soc_mop500_match,
 164         },
 165         .probe = mop500_probe,
 166         .remove = mop500_remove,
 167 };
 168
 169 module_platform_driver(snd_soc_mop500_driver);
 170
 171 MODULE_LICENSE("GPL v2");
 172 MODULE_DESCRIPTION("ASoC MOP500 board driver");
 173 MODULE_AUTHOR("Ola Lilja");