text: // SPDX-License-Identifier: GPL-2.0-only
  /*
   * Rockchip machine ASoC driver for boards using a RT5645/RT5650 CODEC.
   *
   * Copyright (c) 2015, ROCKCHIP CORPORATION.  All rights reserved.
   */
  
  #include <linux/module.h>
  #include <linux/platform_device.h>
  #include <linux/slab.h>
  #include <linux/gpio.h>
  #include <linux/of_gpio.h>
  #include <linux/delay.h>
  #include <sound/core.h>
  #include <sound/jack.h>
  #include <sound/pcm.h>
  #include <sound/pcm_params.h>
  #include <sound/soc.h>
  #include "rockchip_i2s.h"
  #include "../codecs/rt5645.h"
  
  #define DRV_NAME "rockchip-snd-rt5645"
  
  static struct snd_soc_jack headset_jack;
  
  static const struct snd_soc_dapm_widget rk_dapm_widgets[] = {
  	SND_SOC_DAPM_HP("Headphones", NULL),
  	SND_SOC_DAPM_SPK("Speakers", NULL),
  	SND_SOC_DAPM_MIC("Headset Mic", NULL),
  	SND_SOC_DAPM_MIC("Int Mic", NULL),
  };
  
  static const struct snd_soc_dapm_route rk_audio_map[] = {
  	/* Input Lines */
  	{"DMIC L2", NULL, "Int Mic"},
  	{"DMIC R2", NULL, "Int Mic"},
  	{"RECMIXL", NULL, "Headset Mic"},
  	{"RECMIXR", NULL, "Headset Mic"},
  
  	/* Output Lines */
  	{"Headphones", NULL, "HPOR"},
  	{"Headphones", NULL, "HPOL"},
  	{"Speakers", NULL, "SPOL"},
  	{"Speakers", NULL, "SPOR"},
  };
  
  static const struct snd_kcontrol_new rk_mc_controls[] = {
  	SOC_DAPM_PIN_SWITCH("Headphones"),
  	SOC_DAPM_PIN_SWITCH("Speakers"),
  	SOC_DAPM_PIN_SWITCH("Headset Mic"),
  	SOC_DAPM_PIN_SWITCH("Int Mic"),
  };
  
  static int rk_aif1_hw_params(struct snd_pcm_substream *substream,
  			     struct snd_pcm_hw_params *params)
  {
  	int ret = 0;
  	struct snd_soc_pcm_runtime *rtd = substream->private_data;
  	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  	int mclk;
  
  	switch (params_rate(params)) {
  	case 8000:
  	case 16000:
  	case 24000:
  	case 32000:
  	case 48000:
  	case 64000:
  	case 96000:
  		mclk = 12288000;
  		break;
  	case 11025:
  	case 22050:
  	case 44100:
  	case 88200:
  		mclk = 11289600;
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
  				     SND_SOC_CLOCK_OUT);
  	if (ret < 0) {
  		dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
  		return ret;
  	}
  
  	ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
  				     SND_SOC_CLOCK_IN);
  	if (ret < 0) {
  		dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
  		return ret;
  	}
  
  	return ret;
  }
  
  static int rk_init(struct snd_soc_pcm_runtime *runtime)
  {
  	struct snd_soc_card *card = runtime->card;
  	int ret;
  
  	/* Enable Headset and 4 Buttons 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,
  				    &headset_jack, NULL, 0);
  	if (ret) {
  		dev_err(card->dev, "New Headset Jack failed! (%d)\n", ret);
  		return ret;
  	}
  
  	return rt5645_set_jack_detect(asoc_rtd_to_codec(runtime, 0)->component,
  				     &headset_jack,
  				     &headset_jack,
  				     &headset_jack);
  }
  
  static const struct snd_soc_ops rk_aif1_ops = {
  	.hw_params = rk_aif1_hw_params,
  };
  
  SND_SOC_DAILINK_DEFS(pcm,
  	DAILINK_COMP_ARRAY(COMP_EMPTY()),
  	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5645-aif1")),
  	DAILINK_COMP_ARRAY(COMP_EMPTY()));
  
  static struct snd_soc_dai_link rk_dailink = {
  	.name = "rt5645",
  	.stream_name = "rt5645 PCM",
  	.init = rk_init,
  	.ops = &rk_aif1_ops,
  	/* set rt5645 as slave */
  	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  		SND_SOC_DAIFMT_CBS_CFS,
  	SND_SOC_DAILINK_REG(pcm),
  };
  
  static struct snd_soc_card snd_soc_card_rk = {
  	.name = "I2S-RT5650",
  	.owner = THIS_MODULE,
  	.dai_link = &rk_dailink,
  	.num_links = 1,
  	.dapm_widgets = rk_dapm_widgets,
  	.num_dapm_widgets = ARRAY_SIZE(rk_dapm_widgets),
  	.dapm_routes = rk_audio_map,
  	.num_dapm_routes = ARRAY_SIZE(rk_audio_map),
  	.controls = rk_mc_controls,
  	.num_controls = ARRAY_SIZE(rk_mc_controls),
  };
  
  static int snd_rk_mc_probe(struct platform_device *pdev)
  {
  	int ret = 0;
  	struct snd_soc_card *card = &snd_soc_card_rk;
  	struct device_node *np = pdev->dev.of_node;
  
  	/* register the soc card */
  	card->dev = &pdev->dev;
  
  	rk_dailink.codecs->of_node = of_parse_phandle(np,
  			"rockchip,audio-codec", 0);
  	if (!rk_dailink.codecs->of_node) {
  		dev_err(&pdev->dev,
  			"Property 'rockchip,audio-codec' missing or invalid\n");
  		return -EINVAL;
  	}
  
  	rk_dailink.cpus->of_node = of_parse_phandle(np,
  			"rockchip,i2s-controller", 0);
  	if (!rk_dailink.cpus->of_node) {
  		dev_err(&pdev->dev,
  			"Property 'rockchip,i2s-controller' missing or invalid\n");
  		ret = -EINVAL;
  		goto put_codec_of_node;
  	}
  
  	rk_dailink.platforms->of_node = rk_dailink.cpus->of_node;
  
  	ret = snd_soc_of_parse_card_name(card, "rockchip,model");
  	if (ret) {
  		dev_err(&pdev->dev,
  			"Soc parse card name failed %d\n", ret);
  		goto put_cpu_of_node;
  	}
  
  	ret = devm_snd_soc_register_card(&pdev->dev, card);
  	if (ret) {
  		dev_err(&pdev->dev,
  			"Soc register card failed %d\n", ret);
  		goto put_cpu_of_node;
  	}
  
  	return ret;
  
  put_cpu_of_node:
  	of_node_put(rk_dailink.cpus->of_node);
  	rk_dailink.cpus->of_node = NULL;
  put_codec_of_node:
  	of_node_put(rk_dailink.codecs->of_node);
  	rk_dailink.codecs->of_node = NULL;
  
  	return ret;
  }
  
  static int snd_rk_mc_remove(struct platform_device *pdev)
  {
  	of_node_put(rk_dailink.cpus->of_node);
  	rk_dailink.cpus->of_node = NULL;
  	of_node_put(rk_dailink.codecs->of_node);
  	rk_dailink.codecs->of_node = NULL;
  
  	return 0;
  }
  
  static const struct of_device_id rockchip_rt5645_of_match[] = {
  	{ .compatible = "rockchip,rockchip-audio-rt5645", },
  	{},
  };
  
  MODULE_DEVICE_TABLE(of, rockchip_rt5645_of_match);
  
  static struct platform_driver snd_rk_mc_driver = {
  	.probe = snd_rk_mc_probe,
  	.remove = snd_rk_mc_remove,
  	.driver = {
  		.name = DRV_NAME,
  		.pm = &snd_soc_pm_ops,
  		.of_match_table = rockchip_rt5645_of_match,
  	},
  };
  
  module_platform_driver(snd_rk_mc_driver);
  
  MODULE_AUTHOR("Xing Zheng <zhengxing@rock-chips.com>");
  MODULE_DESCRIPTION("Rockchip rt5645 machine ASoC driver");
  MODULE_LICENSE("GPL v2");
  MODULE_ALIAS("platform:" DRV_NAME);
  