text: // SPDX-License-Identifier: GPL-2.0
  /*
   * mt8173-rt5650-rt5514.c  --  MT8173 machine driver with RT5650/5514 codecs
   *
   * Copyright (c) 2016 MediaTek Inc.
   * Author: Koro Chen <koro.chen@mediatek.com>
   */
  
  #include <linux/module.h>
  #include <linux/gpio.h>
  #include <linux/of_gpio.h>
  #include <sound/soc.h>
  #include <sound/jack.h>
  #include "../../codecs/rt5645.h"
  
  #define MCLK_FOR_CODECS		12288000
  
  static const struct snd_soc_dapm_widget mt8173_rt5650_rt5514_widgets[] = {
  	SND_SOC_DAPM_SPK("Speaker", NULL),
  	SND_SOC_DAPM_MIC("Int Mic", NULL),
  	SND_SOC_DAPM_HP("Headphone", NULL),
  	SND_SOC_DAPM_MIC("Headset Mic", NULL),
  };
  
  static const struct snd_soc_dapm_route mt8173_rt5650_rt5514_routes[] = {
  	{"Speaker", NULL, "SPOL"},
  	{"Speaker", NULL, "SPOR"},
  	{"Sub DMIC1L", NULL, "Int Mic"},
  	{"Sub DMIC1R", NULL, "Int Mic"},
  	{"Headphone", NULL, "HPOL"},
  	{"Headphone", NULL, "HPOR"},
  	{"IN1P", NULL, "Headset Mic"},
  	{"IN1N", NULL, "Headset Mic"},
  };
  
  static const struct snd_kcontrol_new mt8173_rt5650_rt5514_controls[] = {
  	SOC_DAPM_PIN_SWITCH("Speaker"),
  	SOC_DAPM_PIN_SWITCH("Int Mic"),
  	SOC_DAPM_PIN_SWITCH("Headphone"),
  	SOC_DAPM_PIN_SWITCH("Headset Mic"),
  };
  
  static int mt8173_rt5650_rt5514_hw_params(struct snd_pcm_substream *substream,
  					  struct snd_pcm_hw_params *params)
  {
  	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  	struct snd_soc_dai *codec_dai;
  	int i, ret;
  
  	for_each_rtd_codec_dais(rtd, i, codec_dai) {
  		/* pll from mclk 12.288M */
  		ret = snd_soc_dai_set_pll(codec_dai, 0, 0, MCLK_FOR_CODECS,
  					  params_rate(params) * 512);
  		if (ret)
  			return ret;
  
  		/* sysclk from pll */
  		ret = snd_soc_dai_set_sysclk(codec_dai, 1,
  					     params_rate(params) * 512,
  					     SND_SOC_CLOCK_IN);
  		if (ret)
  			return ret;
  	}
  	return 0;
  }
  
  static const struct snd_soc_ops mt8173_rt5650_rt5514_ops = {
  	.hw_params = mt8173_rt5650_rt5514_hw_params,
  };
  
  static struct snd_soc_jack mt8173_rt5650_rt5514_jack;
  
  static int mt8173_rt5650_rt5514_init(struct snd_soc_pcm_runtime *runtime)
  {
  	struct snd_soc_card *card = runtime->card;
  	struct snd_soc_component *component = asoc_rtd_to_codec(runtime, 0)->component;
  	int ret;
  
  	rt5645_sel_asrc_clk_src(component,
  				RT5645_DA_STEREO_FILTER |
  				RT5645_AD_STEREO_FILTER,
  				RT5645_CLK_SEL_I2S1_ASRC);
  
  	/* enable jack detection */
  	ret = snd_soc_card_jack_new(card, "Headset Jack",
  				    SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
  				    SND_JACK_BTN_0 | SND_JACK_BTN_1 |
  				    SND_JACK_BTN_2 | SND_JACK_BTN_3,
  				    &mt8173_rt5650_rt5514_jack, NULL, 0);
  	if (ret) {
  		dev_err(card->dev, "Can't new Headset Jack %d\n", ret);
  		return ret;
  	}
  
  	return rt5645_set_jack_detect(component,
  				      &mt8173_rt5650_rt5514_jack,
  				      &mt8173_rt5650_rt5514_jack,
  				      &mt8173_rt5650_rt5514_jack);
  }
  
  enum {
  	DAI_LINK_PLAYBACK,
  	DAI_LINK_CAPTURE,
  	DAI_LINK_CODEC_I2S,
  };
  
  SND_SOC_DAILINK_DEFS(playback,
  	DAILINK_COMP_ARRAY(COMP_CPU("DL1")),
  	DAILINK_COMP_ARRAY(COMP_DUMMY()),
  	DAILINK_COMP_ARRAY(COMP_EMPTY()));
  
  SND_SOC_DAILINK_DEFS(capture,
  	DAILINK_COMP_ARRAY(COMP_CPU("VUL")),
  	DAILINK_COMP_ARRAY(COMP_DUMMY()),
  	DAILINK_COMP_ARRAY(COMP_EMPTY()));
  
  SND_SOC_DAILINK_DEFS(codec,
  	DAILINK_COMP_ARRAY(COMP_CPU("I2S")),
  	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5645-aif1"),
  			   COMP_CODEC(NULL, "rt5514-aif1")),
  	DAILINK_COMP_ARRAY(COMP_EMPTY()));
  
  /* Digital audio interface glue - connects codec <---> CPU */
  static struct snd_soc_dai_link mt8173_rt5650_rt5514_dais[] = {
  	/* Front End DAI links */
  	[DAI_LINK_PLAYBACK] = {
  		.name = "rt5650_rt5514 Playback",
  		.stream_name = "rt5650_rt5514 Playback",
  		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
  		.dynamic = 1,
  		.dpcm_playback = 1,
  		SND_SOC_DAILINK_REG(playback),
  	},
  	[DAI_LINK_CAPTURE] = {
  		.name = "rt5650_rt5514 Capture",
  		.stream_name = "rt5650_rt5514 Capture",
  		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
  		.dynamic = 1,
  		.dpcm_capture = 1,
  		SND_SOC_DAILINK_REG(capture),
  	},
  	/* Back End DAI links */
  	[DAI_LINK_CODEC_I2S] = {
  		.name = "Codec",
  		.no_pcm = 1,
  		.init = mt8173_rt5650_rt5514_init,
  		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  			   SND_SOC_DAIFMT_CBS_CFS,
  		.ops = &mt8173_rt5650_rt5514_ops,
  		.ignore_pmdown_time = 1,
  		.dpcm_playback = 1,
  		.dpcm_capture = 1,
  		SND_SOC_DAILINK_REG(codec),
  	},
  };
  
  static struct snd_soc_codec_conf mt8173_rt5650_rt5514_codec_conf[] = {
  	{
  		.name_prefix = "Sub",
  	},
  };
  
  static struct snd_soc_card mt8173_rt5650_rt5514_card = {
  	.name = "mtk-rt5650-rt5514",
  	.owner = THIS_MODULE,
  	.dai_link = mt8173_rt5650_rt5514_dais,
  	.num_links = ARRAY_SIZE(mt8173_rt5650_rt5514_dais),
  	.codec_conf = mt8173_rt5650_rt5514_codec_conf,
  	.num_configs = ARRAY_SIZE(mt8173_rt5650_rt5514_codec_conf),
  	.controls = mt8173_rt5650_rt5514_controls,
  	.num_controls = ARRAY_SIZE(mt8173_rt5650_rt5514_controls),
  	.dapm_widgets = mt8173_rt5650_rt5514_widgets,
  	.num_dapm_widgets = ARRAY_SIZE(mt8173_rt5650_rt5514_widgets),
  	.dapm_routes = mt8173_rt5650_rt5514_routes,
  	.num_dapm_routes = ARRAY_SIZE(mt8173_rt5650_rt5514_routes),
  };
  
  static int mt8173_rt5650_rt5514_dev_probe(struct platform_device *pdev)
  {
  	struct snd_soc_card *card = &mt8173_rt5650_rt5514_card;
  	struct device_node *platform_node;
  	struct snd_soc_dai_link *dai_link;
  	int i, ret;
  
  	platform_node = of_parse_phandle(pdev->dev.of_node,
  					 "mediatek,platform", 0);
  	if (!platform_node) {
  		dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
  		return -EINVAL;
  	}
  
  	for_each_card_prelinks(card, i, dai_link) {
  		if (dai_link->platforms->name)
  			continue;
  		dai_link->platforms->of_node = platform_node;
  	}
  
  	mt8173_rt5650_rt5514_dais[DAI_LINK_CODEC_I2S].codecs[0].of_node =
  		of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 0);
  	if (!mt8173_rt5650_rt5514_dais[DAI_LINK_CODEC_I2S].codecs[0].of_node) {
  		dev_err(&pdev->dev,
  			"Property 'audio-codec' missing or invalid\n");
  		return -EINVAL;
  	}
  	mt8173_rt5650_rt5514_dais[DAI_LINK_CODEC_I2S].codecs[1].of_node =
  		of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 1);
  	if (!mt8173_rt5650_rt5514_dais[DAI_LINK_CODEC_I2S].codecs[1].of_node) {
  		dev_err(&pdev->dev,
  			"Property 'audio-codec' missing or invalid\n");
  		return -EINVAL;
  	}
  	mt8173_rt5650_rt5514_codec_conf[0].dlc.of_node =
  		mt8173_rt5650_rt5514_dais[DAI_LINK_CODEC_I2S].codecs[1].of_node;
  
  	card->dev = &pdev->dev;
  
  	ret = devm_snd_soc_register_card(&pdev->dev, card);
  	if (ret)
  		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
  			__func__, ret);
  	return ret;
  }
  
  static const struct of_device_id mt8173_rt5650_rt5514_dt_match[] = {
  	{ .compatible = "mediatek,mt8173-rt5650-rt5514", },
  	{ }
  };
  MODULE_DEVICE_TABLE(of, mt8173_rt5650_rt5514_dt_match);
  
  static struct platform_driver mt8173_rt5650_rt5514_driver = {
  	.driver = {
  		   .name = "mtk-rt5650-rt5514",
  		   .of_match_table = mt8173_rt5650_rt5514_dt_match,
  #ifdef CONFIG_PM
  		   .pm = &snd_soc_pm_ops,
  #endif
  	},
  	.probe = mt8173_rt5650_rt5514_dev_probe,
  };
  
  module_platform_driver(mt8173_rt5650_rt5514_driver);
  
  /* Module information */
  MODULE_DESCRIPTION("MT8173 RT5650 and RT5514 SoC machine driver");
  MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>");
  MODULE_LICENSE("GPL v2");
  MODULE_ALIAS("platform:mtk-rt5650-rt5514");
  
  