/* sound/soc/samsung/jive_wm8750.c

   *
   * Copyright 2007,2008 Simtec Electronics
   *
   * Based on sound/soc/pxa/spitz.c
   *	Copyright 2005 Wolfson Microelectronics PLC.
   *	Copyright 2005 Openedhand Ltd.
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
  */

  #include <sound/soc.h>

  
  #include <asm/mach-types.h>

  #include "s3c2412-i2s.h"

  #include "../codecs/wm8750.h"
  
  static const struct snd_soc_dapm_route audio_map[] = {
  	{ "Headphone Jack", NULL, "LOUT1" },
  	{ "Headphone Jack", NULL, "ROUT1" },
  	{ "Internal Speaker", NULL, "LOUT2" },
  	{ "Internal Speaker", NULL, "ROUT2" },
  	{ "LINPUT1", NULL, "Line Input" },
  	{ "RINPUT1", NULL, "Line Input" },
  };
  
  static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
  	SND_SOC_DAPM_HP("Headphone Jack", NULL),
  	SND_SOC_DAPM_SPK("Internal Speaker", NULL),
  	SND_SOC_DAPM_LINE("Line In", NULL),
  };

  static int jive_hw_params(struct snd_pcm_substream *substream,
  			  struct snd_pcm_hw_params *params)
  {
  	struct snd_soc_pcm_runtime *rtd = substream->private_data;

  	struct snd_soc_dai *codec_dai = rtd->codec_dai;
  	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

  	struct s3c_i2sv2_rate_calc div;

  	unsigned int clk = 0;
  	int ret = 0;
  
  	switch (params_rate(params)) {
  	case 8000:
  	case 16000:
  	case 48000:
  	case 96000:
  		clk = 12288000;
  		break;
  	case 11025:
  	case 22050:
  	case 44100:
  		clk = 11289600;
  		break;
  	}

  	s3c_i2sv2_iis_calc_rate(&div, NULL, params_rate(params),

  				s3c_i2sv2_get_clock(cpu_dai));

  
  	/* set codec DAI configuration */
  	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
  				  SND_SOC_DAIFMT_NB_NF |
  				  SND_SOC_DAIFMT_CBS_CFS);
  	if (ret < 0)
  		return ret;
  
  	/* set cpu DAI configuration */
  	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
  				  SND_SOC_DAIFMT_NB_NF |
  				  SND_SOC_DAIFMT_CBS_CFS);
  	if (ret < 0)
  		return ret;
  
  	/* set the codec system clock for DAC and ADC */
  	ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
  				     SND_SOC_CLOCK_IN);
  	if (ret < 0)
  		return ret;
  
  	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_RCLK, div.fs_div);
  	if (ret < 0)
  		return ret;
  
  	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_PRESCALER,
  				     div.clk_div - 1);
  	if (ret < 0)
  		return ret;
  
  	return 0;
  }
  
  static struct snd_soc_ops jive_ops = {

  	.hw_params	= jive_hw_params,
  };

  static int jive_wm8750_init(struct snd_soc_pcm_runtime *rtd)

  {

  	struct snd_soc_codec *codec = rtd->codec;

  	struct snd_soc_dapm_context *dapm = &codec->dapm;

  	int err;
  
  	/* These endpoints are not being used. */

  	snd_soc_dapm_nc_pin(dapm, "LINPUT2");
  	snd_soc_dapm_nc_pin(dapm, "RINPUT2");
  	snd_soc_dapm_nc_pin(dapm, "LINPUT3");
  	snd_soc_dapm_nc_pin(dapm, "RINPUT3");
  	snd_soc_dapm_nc_pin(dapm, "OUT3");
  	snd_soc_dapm_nc_pin(dapm, "MONO");

  
  	/* Add jive specific widgets */

  	err = snd_soc_dapm_new_controls(dapm, wm8750_dapm_widgets,

  					ARRAY_SIZE(wm8750_dapm_widgets));
  	if (err) {
  		printk(KERN_ERR "%s: failed to add widgets (%d)
  ",
  		       __func__, err);
  		return err;
  	}

  	snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
  	snd_soc_dapm_sync(dapm);

  
  	return 0;
  }
  
  static struct snd_soc_dai_link jive_dai = {
  	.name		= "wm8750",
  	.stream_name	= "WM8750",

  	.cpu_dai_name	= "s3c2412-i2s",
  	.codec_dai_name = "wm8750-hifi",

  	.platform_name	= "samsung-audio",

  	.codec_name	= "wm8750-codec.0-001a",

  	.init		= jive_wm8750_init,
  	.ops		= &jive_ops,
  };
  
  /* jive audio machine driver */

  static struct snd_soc_card snd_soc_machine_jive = {

  	.name		= "Jive",
  	.dai_link	= &jive_dai,
  	.num_links	= 1,
  };

  static struct platform_device *jive_snd_device;
  
  static int __init jive_init(void)
  {
  	int ret;
  
  	if (!machine_is_jive())
  		return 0;
  
  	printk("JIVE WM8750 Audio support
  ");
  
  	jive_snd_device = platform_device_alloc("soc-audio", -1);
  	if (!jive_snd_device)
  		return -ENOMEM;

  	platform_set_drvdata(jive_snd_device, &snd_soc_machine_jive);

  	ret = platform_device_add(jive_snd_device);
  
  	if (ret)
  		platform_device_put(jive_snd_device);
  
  	return ret;
  }
  
  static void __exit jive_exit(void)
  {
  	platform_device_unregister(jive_snd_device);
  }
  
  module_init(jive_init);
  module_exit(jive_exit);
  
  MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
  MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
  MODULE_LICENSE("GPL");