text: // SPDX-License-Identifier: GPL-2.0-only
  /*
   * Copyright (C) ST-Ericsson SA 2012
   *
   * Author: Ola Lilja (ola.o.lilja@stericsson.com)
   *         for ST-Ericsson.
   *
   * License terms:
   */
  
  #include <asm/mach-types.h>
  
  #include <linux/module.h>
  #include <linux/io.h>
  #include <linux/spi/spi.h>
  #include <linux/of.h>
  
  #include <sound/soc.h>
  #include <sound/initval.h>
  
  #include "ux500_pcm.h"
  #include "ux500_msp_dai.h"
  
  #include "mop500_ab8500.h"
  
  /* Define the whole MOP500 soundcard, linking platform to the codec-drivers  */
  SND_SOC_DAILINK_DEFS(link1,
  	DAILINK_COMP_ARRAY(COMP_CPU("ux500-msp-i2s.1")),
  	DAILINK_COMP_ARRAY(COMP_CODEC("ab8500-codec.0", "ab8500-codec-dai.0")),
  	DAILINK_COMP_ARRAY(COMP_PLATFORM("ux500-msp-i2s.1")));
  
  SND_SOC_DAILINK_DEFS(link2,
  	DAILINK_COMP_ARRAY(COMP_CPU("ux500-msp-i2s.3")),
  	DAILINK_COMP_ARRAY(COMP_CODEC("ab8500-codec.0", "ab8500-codec-dai.1")),
  	DAILINK_COMP_ARRAY(COMP_PLATFORM("ux500-msp-i2s.3")));
  
  static struct snd_soc_dai_link mop500_dai_links[] = {
  	{
  		.name = "ab8500_0",
  		.stream_name = "ab8500_0",
  		.init = mop500_ab8500_machine_init,
  		.ops = mop500_ab8500_ops,
  		SND_SOC_DAILINK_REG(link1),
  	},
  	{
  		.name = "ab8500_1",
  		.stream_name = "ab8500_1",
  		.init = NULL,
  		.ops = mop500_ab8500_ops,
  		SND_SOC_DAILINK_REG(link2),
  	},
  };
  
  static struct snd_soc_card mop500_card = {
  	.name = "MOP500-card",
  	.owner = THIS_MODULE,
  	.probe = NULL,
  	.dai_link = mop500_dai_links,
  	.num_links = ARRAY_SIZE(mop500_dai_links),
  };
  
  static void mop500_of_node_put(void)
  {
  	int i;
  
  	for (i = 0; i < 2; i++)
  		of_node_put(mop500_dai_links[i].cpus->of_node);
  
  	/* Both links use the same codec, which is refcounted only once */
  	of_node_put(mop500_dai_links[0].codecs->of_node);
  }
  
  static int mop500_of_probe(struct platform_device *pdev,
  			   struct device_node *np)
  {
  	struct device_node *codec_np, *msp_np[2];
  	int i;
  
  	msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0);
  	msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1);
  	codec_np  = of_parse_phandle(np, "stericsson,audio-codec", 0);
  
  	if (!(msp_np[0] && msp_np[1] && codec_np)) {
  		dev_err(&pdev->dev, "Phandle missing or invalid\n");
  		for (i = 0; i < 2; i++)
  			of_node_put(msp_np[i]);
  		of_node_put(codec_np);
  		return -EINVAL;
  	}
  
  	for (i = 0; i < 2; i++) {
  		mop500_dai_links[i].cpus->of_node = msp_np[i];
  		mop500_dai_links[i].cpus->dai_name = NULL;
  		mop500_dai_links[i].platforms->of_node = msp_np[i];
  		mop500_dai_links[i].platforms->name = NULL;
  		mop500_dai_links[i].codecs->of_node = codec_np;
  		mop500_dai_links[i].codecs->name = NULL;
  	}
  
  	snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name");
  
  	return 0;
  }
  
  static int mop500_probe(struct platform_device *pdev)
  {
  	struct device_node *np = pdev->dev.of_node;
  	int ret;
  
  	dev_dbg(&pdev->dev, "%s: Enter.\n", __func__);
  
  	mop500_card.dev = &pdev->dev;
  
  	if (np) {
  		ret = mop500_of_probe(pdev, np);
  		if (ret)
  			return ret;
  	}
  
  	dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n",
  		__func__, mop500_card.name);
  
  	snd_soc_card_set_drvdata(&mop500_card, NULL);
  
  	dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n",
  		__func__, mop500_card.name, mop500_card.num_links);
  	dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n",
  		__func__, mop500_card.name, mop500_card.dai_link[0].name);
  	dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n",
  		__func__, mop500_card.name,
  		mop500_card.dai_link[0].stream_name);
  
  	ret = snd_soc_register_card(&mop500_card);
  	if (ret)
  		dev_err(&pdev->dev,
  			"Error: snd_soc_register_card failed (%d)!\n", ret);
  
  	return ret;
  }
  
  static int mop500_remove(struct platform_device *pdev)
  {
  	struct snd_soc_card *mop500_card = platform_get_drvdata(pdev);
  
  	pr_debug("%s: Enter.\n", __func__);
  
  	snd_soc_unregister_card(mop500_card);
  	mop500_ab8500_remove(mop500_card);
  	mop500_of_node_put();
  
  	return 0;
  }
  
  static const struct of_device_id snd_soc_mop500_match[] = {
  	{ .compatible = "stericsson,snd-soc-mop500", },
  	{},
  };
  MODULE_DEVICE_TABLE(of, snd_soc_mop500_match);
  
  static struct platform_driver snd_soc_mop500_driver = {
  	.driver = {
  		.name = "snd-soc-mop500",
  		.of_match_table = snd_soc_mop500_match,
  	},
  	.probe = mop500_probe,
  	.remove = mop500_remove,
  };
  
  module_platform_driver(snd_soc_mop500_driver);
  
  MODULE_LICENSE("GPL v2");
  MODULE_DESCRIPTION("ASoC MOP500 board driver");
  MODULE_AUTHOR("Ola Lilja");
  