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
   9 #include <asm/mach-types.h>
  10
  11 #include <linux/module.h>
  12 #include <linux/io.h>
  13 #include <linux/spi/spi.h>
  14 #include <linux/of.h>
  15
  16 #include <sound/soc.h>
  17 #include <sound/initval.h>
  18
  19 #include "ux500_pcm.h"
  20 #include "ux500_msp_dai.h"
  21
  22 #include "mop500_ab8500.h"
  23
  24 /* Define the whole MOP500 soundcard, linking platform to the codec-drivers  */
  25 SND_SOC_DAILINK_DEFS(link1,
  26         DAILINK_COMP_ARRAY(COMP_CPU("ux500-msp-i2s.1")),
  27         DAILINK_COMP_ARRAY(COMP_CODEC("ab8500-codec.0", "ab8500-codec-dai.0")),
  28         DAILINK_COMP_ARRAY(COMP_PLATFORM("ux500-msp-i2s.1")));
  29
  30 SND_SOC_DAILINK_DEFS(link2,
  31         DAILINK_COMP_ARRAY(COMP_CPU("ux500-msp-i2s.3")),
  32         DAILINK_COMP_ARRAY(COMP_CODEC("ab8500-codec.0", "ab8500-codec-dai.1")),
  33         DAILINK_COMP_ARRAY(COMP_PLATFORM("ux500-msp-i2s.3")));
  34
  35 static struct snd_soc_dai_link mop500_dai_links[] = {
  36         {
  37                 .name = "ab8500_0",
  38                 .stream_name = "ab8500_0",
  39                 .init = mop500_ab8500_machine_init,
  40                 .ops = mop500_ab8500_ops,
  41                 SND_SOC_DAILINK_REG(link1),
  42         },
  43         {
  44                 .name = "ab8500_1",
  45                 .stream_name = "ab8500_1",
  46                 .init = NULL,
  47                 .ops = mop500_ab8500_ops,
  48                 SND_SOC_DAILINK_REG(link2),
  49         },
  50 };
  51
  52 static struct snd_soc_card mop500_card = {
  53         .name = "MOP500-card",
  54         .owner = THIS_MODULE,
  55         .probe = NULL,
  56         .dai_link = mop500_dai_links,
  57         .num_links = ARRAY_SIZE(mop500_dai_links),
  58 };
  59
  60 static void mop500_of_node_put(void)
  61 {
  62         int i;
  63
  64         for (i = 0; i < 2; i++)
  65                 of_node_put(mop500_dai_links[i].cpus->of_node);
  66
  67         /* Both links use the same codec, which is refcounted only once */
  68         of_node_put(mop500_dai_links[0].codecs->of_node);
  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                 for (i = 0; i < 2; i++)
  84                         of_node_put(msp_np[i]);
  85                 of_node_put(codec_np);
  86                 return -EINVAL;
  87         }
  88
  89         for (i = 0; i < 2; i++) {
  90                 mop500_dai_links[i].cpus->of_node = msp_np[i];
  91                 mop500_dai_links[i].cpus->dai_name = NULL;
  92                 mop500_dai_links[i].platforms->of_node = msp_np[i];
  93                 mop500_dai_links[i].platforms->name = NULL;
  94                 mop500_dai_links[i].codecs->of_node = codec_np;
  95                 mop500_dai_links[i].codecs->name = NULL;
  96         }
  97
  98         snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name");
  99
 100         return 0;
 101 }
 102
 103 static int mop500_probe(struct platform_device *pdev)
 104 {
 105         struct device_node *np = pdev->dev.of_node;
 106         int ret;
 107
 108         dev_dbg(&pdev->dev, "%s: Enter.\n", __func__);
 109
 110         mop500_card.dev = &pdev->dev;
 111
 112         if (np) {
 113                 ret = mop500_of_probe(pdev, np);
 114                 if (ret)
 115                         return ret;
 116         }
 117
 118         dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n",
 119                 __func__, mop500_card.name);
 120
 121         snd_soc_card_set_drvdata(&mop500_card, NULL);
 122
 123         dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n",
 124                 __func__, mop500_card.name, mop500_card.num_links);
 125         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n",
 126                 __func__, mop500_card.name, mop500_card.dai_link[0].name);
 127         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n",
 128                 __func__, mop500_card.name,
 129                 mop500_card.dai_link[0].stream_name);
 130
 131         ret = snd_soc_register_card(&mop500_card);
 132         if (ret)
 133                 dev_err(&pdev->dev,
 134                         "Error: snd_soc_register_card failed (%d)!\n", ret);
 135
 136         return ret;
 137 }
 138
 139 static int mop500_remove(struct platform_device *pdev)
 140 {
 141         struct snd_soc_card *card = platform_get_drvdata(pdev);
 142
 143         pr_debug("%s: Enter.\n", __func__);
 144
 145         snd_soc_unregister_card(card);
 146         mop500_ab8500_remove(card);
 147         mop500_of_node_put();
 148
 149         return 0;
 150 }
 151
 152 static const struct of_device_id snd_soc_mop500_match[] = {
 153         { .compatible = "stericsson,snd-soc-mop500", },
 154         {},
 155 };
 156 MODULE_DEVICE_TABLE(of, snd_soc_mop500_match);
 157
 158 static struct platform_driver snd_soc_mop500_driver = {
 159         .driver = {
 160                 .name = "snd-soc-mop500",
 161                 .of_match_table = snd_soc_mop500_match,
 162         },
 163         .probe = mop500_probe,
 164         .remove = mop500_remove,
 165 };
 166
 167 module_platform_driver(snd_soc_mop500_driver);
 168
 169 MODULE_LICENSE("GPL v2");
 170 MODULE_DESCRIPTION("ASoC MOP500 board driver");
 171 MODULE_AUTHOR("Ola Lilja");