sound/soc/intel/bytcr_dpcm_rt5640.c - kernel/msm-4.9 - Gitiles

 /*
  *  byt_cr_dpcm_rt5640.c - ASoc Machine driver for Intel Byt CR platform
  *
  *  Copyright (C) 2014 Intel Corp
  *  Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation; version 2 of the License.
  *
  *  This program is distributed in the hope that it will be useful, but
  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  *  General Public License for more details.
  *
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */

 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/device.h>
 #include <linux/slab.h>
 #include <linux/input.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
 #include "../codecs/rt5640.h"
 #include "sst-atom-controls.h"

 static const struct snd_soc_dapm_widget byt_dapm_widgets[] = {
 	SND_SOC_DAPM_HP("Headphone", NULL),
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 	SND_SOC_DAPM_MIC("Int Mic", NULL),
 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
 };

 static const struct snd_soc_dapm_route byt_audio_map[] = {
 	{"IN2P", NULL, "Headset Mic"},
 	{"IN2N", NULL, "Headset Mic"},
 	{"Headset Mic", NULL, "MICBIAS1"},
 	{"IN1P", NULL, "MICBIAS1"},
 	{"LDO2", NULL, "Int Mic"},
 	{"Headphone", NULL, "HPOL"},
 	{"Headphone", NULL, "HPOR"},
 	{"Ext Spk", NULL, "SPOLP"},
 	{"Ext Spk", NULL, "SPOLN"},
 	{"Ext Spk", NULL, "SPORP"},
 	{"Ext Spk", NULL, "SPORN"},

 	{"AIF1 Playback", NULL, "ssp2 Tx"},
 	{"ssp2 Tx", NULL, "codec_out0"},
 	{"ssp2 Tx", NULL, "codec_out1"},
 	{"codec_in0", NULL, "ssp2 Rx"},
 	{"codec_in1", NULL, "ssp2 Rx"},
 	{"ssp2 Rx", NULL, "AIF1 Capture"},
 };

 static const struct snd_kcontrol_new byt_mc_controls[] = {
 	SOC_DAPM_PIN_SWITCH("Headphone"),
 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
 	SOC_DAPM_PIN_SWITCH("Int Mic"),
 	SOC_DAPM_PIN_SWITCH("Ext Spk"),
 };

 static int byt_aif1_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;
 	int ret;

 	snd_soc_dai_set_bclk_ratio(codec_dai, 50);

 	ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_PLL1,
 				     params_rate(params) * 512,
 				     SND_SOC_CLOCK_IN);
 	if (ret < 0) {
 		dev_err(rtd->dev, "can't set codec clock %d\n", ret);
 		return ret;
 	}

 	ret = snd_soc_dai_set_pll(codec_dai, 0, RT5640_PLL1_S_BCLK1,
 				  params_rate(params) * 50,
 				  params_rate(params) * 512);
 	if (ret < 0) {
 		dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
 		return ret;
 	}

 	return 0;
 }

 static const struct snd_soc_pcm_stream byt_dai_params = {
 	.formats = SNDRV_PCM_FMTBIT_S24_LE,
 	.rate_min = 48000,
 	.rate_max = 48000,
 	.channels_min = 2,
 	.channels_max = 2,
 };

 static int byt_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 			    struct snd_pcm_hw_params *params)
 {
 	struct snd_interval *rate = hw_param_interval(params,
 			SNDRV_PCM_HW_PARAM_RATE);
 	struct snd_interval *channels = hw_param_interval(params,
 						SNDRV_PCM_HW_PARAM_CHANNELS);

 	/* The DSP will covert the FE rate to 48k, stereo, 24bits */
 	rate->min = rate->max = 48000;
 	channels->min = channels->max = 2;

 	/* set SSP2 to 24-bit */
 	snd_mask_set(&params->masks[SNDRV_PCM_HW_PARAM_FORMAT -
 				    SNDRV_PCM_HW_PARAM_FIRST_MASK],
 				    SNDRV_PCM_FORMAT_S24_LE);
 	return 0;
 }

 static unsigned int rates_48000[] = {
 	48000,
 };

 static struct snd_pcm_hw_constraint_list constraints_48000 = {
 	.count = ARRAY_SIZE(rates_48000),
 	.list  = rates_48000,
 };

 static int byt_aif1_startup(struct snd_pcm_substream *substream)
 {
 	return snd_pcm_hw_constraint_list(substream->runtime, 0,
 			SNDRV_PCM_HW_PARAM_RATE,
 			&constraints_48000);
 }

 static struct snd_soc_ops byt_aif1_ops = {
 	.startup = byt_aif1_startup,
 };

 static struct snd_soc_ops byt_be_ssp2_ops = {
 	.hw_params = byt_aif1_hw_params,
 };

 static struct snd_soc_dai_link byt_dailink[] = {
 	[MERR_DPCM_AUDIO] = {
 		.name = "Baytrail Audio Port",
 		.stream_name = "Baytrail Audio",
 		.cpu_dai_name = "media-cpu-dai",
 		.codec_dai_name = "snd-soc-dummy-dai",
 		.codec_name = "snd-soc-dummy",
 		.platform_name = "sst-mfld-platform",
 		.ignore_suspend = 1,
 		.dynamic = 1,
 		.dpcm_playback = 1,
 		.dpcm_capture = 1,
 		.ops = &byt_aif1_ops,
 	},
 	[MERR_DPCM_COMPR] = {
 		.name = "Baytrail Compressed Port",
 		.stream_name = "Baytrail Compress",
 		.cpu_dai_name = "compress-cpu-dai",
 		.codec_dai_name = "snd-soc-dummy-dai",
 		.codec_name = "snd-soc-dummy",
 		.platform_name = "sst-mfld-platform",
 	},
 		/* back ends */
 	{
 		.name = "SSP2-Codec",
 		.be_id = 1,
 		.cpu_dai_name = "ssp2-port",
 		.platform_name = "sst-mfld-platform",
 		.no_pcm = 1,
 		.codec_dai_name = "rt5640-aif1",
 		.codec_name = "i2c-10EC5640:00",
 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 						| SND_SOC_DAIFMT_CBS_CFS,
 		.be_hw_params_fixup = byt_codec_fixup,
 		.ignore_suspend = 1,
 		.dpcm_playback = 1,
 		.dpcm_capture = 1,
 		.ops = &byt_be_ssp2_ops,
 	},
 };

 /* SoC card */
 static struct snd_soc_card snd_soc_card_byt = {
 	.name = "baytrailcraudio",
 	.dai_link = byt_dailink,
 	.num_links = ARRAY_SIZE(byt_dailink),
 	.dapm_widgets = byt_dapm_widgets,
 	.num_dapm_widgets = ARRAY_SIZE(byt_dapm_widgets),
 	.dapm_routes = byt_audio_map,
 	.num_dapm_routes = ARRAY_SIZE(byt_audio_map),
 	.controls = byt_mc_controls,
 	.num_controls = ARRAY_SIZE(byt_mc_controls),
 };

 static int snd_byt_mc_probe(struct platform_device *pdev)
 {
 	int ret_val = 0;

 	/* register the soc card */
 	snd_soc_card_byt.dev = &pdev->dev;

 	ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_byt);
 	if (ret_val) {
 		dev_err(&pdev->dev, "devm_snd_soc_register_card failed %d\n", ret_val);
 		return ret_val;
 	}
 	platform_set_drvdata(pdev, &snd_soc_card_byt);
 	return ret_val;
 }

 static struct platform_driver snd_byt_mc_driver = {
 	.driver = {
 		.owner = THIS_MODULE,
 		.name = "bytt100_rt5640",
 		.pm = &snd_soc_pm_ops,
 	},
 	.probe = snd_byt_mc_probe,
 };

 module_platform_driver(snd_byt_mc_driver);

 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
 MODULE_AUTHOR("Subhransu S. Prusty <subhransu.s.prusty@intel.com>");
 MODULE_LICENSE("GPL v2");
 MODULE_ALIAS("platform:bytrt5640-audio");
	/*
	* byt_cr_dpcm_rt5640.c - ASoc Machine driver for Intel Byt CR platform
	*
	* Copyright (C) 2014 Intel Corp
	* Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; version 2 of the License.
	*
	* This program is distributed in the hope that it will be useful, but
	* WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* General Public License for more details.
	*
	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	*/

	#include <linux/init.h>
	#include <linux/module.h>
	#include <linux/platform_device.h>
	#include <linux/device.h>
	#include <linux/slab.h>
	#include <linux/input.h>
	#include <sound/pcm.h>
	#include <sound/pcm_params.h>
	#include <sound/soc.h>
	#include "../codecs/rt5640.h"
	#include "sst-atom-controls.h"

	static const struct snd_soc_dapm_widget byt_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone", NULL),
	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	SND_SOC_DAPM_MIC("Int Mic", NULL),
	SND_SOC_DAPM_SPK("Ext Spk", NULL),
	};

	static const struct snd_soc_dapm_route byt_audio_map[] = {
	{"IN2P", NULL, "Headset Mic"},
	{"IN2N", NULL, "Headset Mic"},
	{"Headset Mic", NULL, "MICBIAS1"},
	{"IN1P", NULL, "MICBIAS1"},
	{"LDO2", NULL, "Int Mic"},
	{"Headphone", NULL, "HPOL"},
	{"Headphone", NULL, "HPOR"},
	{"Ext Spk", NULL, "SPOLP"},
	{"Ext Spk", NULL, "SPOLN"},
	{"Ext Spk", NULL, "SPORP"},
	{"Ext Spk", NULL, "SPORN"},

	{"AIF1 Playback", NULL, "ssp2 Tx"},
	{"ssp2 Tx", NULL, "codec_out0"},
	{"ssp2 Tx", NULL, "codec_out1"},
	{"codec_in0", NULL, "ssp2 Rx"},
	{"codec_in1", NULL, "ssp2 Rx"},
	{"ssp2 Rx", NULL, "AIF1 Capture"},
	};

	static const struct snd_kcontrol_new byt_mc_controls[] = {
	SOC_DAPM_PIN_SWITCH("Headphone"),
	SOC_DAPM_PIN_SWITCH("Headset Mic"),
	SOC_DAPM_PIN_SWITCH("Int Mic"),
	SOC_DAPM_PIN_SWITCH("Ext Spk"),
	};

	static int byt_aif1_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;
	int ret;

	snd_soc_dai_set_bclk_ratio(codec_dai, 50);

	ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_PLL1,
	params_rate(params) * 512,
	SND_SOC_CLOCK_IN);
	if (ret < 0) {
	dev_err(rtd->dev, "can't set codec clock %d\n", ret);
	return ret;
	}

	ret = snd_soc_dai_set_pll(codec_dai, 0, RT5640_PLL1_S_BCLK1,
	params_rate(params) * 50,
	params_rate(params) * 512);
	if (ret < 0) {
	dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
	return ret;
	}

	return 0;
	}

	static const struct snd_soc_pcm_stream byt_dai_params = {
	.formats = SNDRV_PCM_FMTBIT_S24_LE,
	.rate_min = 48000,
	.rate_max = 48000,
	.channels_min = 2,
	.channels_max = 2,
	};

	static int byt_codec_fixup(struct snd_soc_pcm_runtime *rtd,
	struct snd_pcm_hw_params *params)
	{
	struct snd_interval *rate = hw_param_interval(params,
	SNDRV_PCM_HW_PARAM_RATE);
	struct snd_interval *channels = hw_param_interval(params,
	SNDRV_PCM_HW_PARAM_CHANNELS);

	/* The DSP will covert the FE rate to 48k, stereo, 24bits */
	rate->min = rate->max = 48000;
	channels->min = channels->max = 2;

	/* set SSP2 to 24-bit */
	snd_mask_set(&params->masks[SNDRV_PCM_HW_PARAM_FORMAT -
	SNDRV_PCM_HW_PARAM_FIRST_MASK],
	SNDRV_PCM_FORMAT_S24_LE);
	return 0;
	}

	static unsigned int rates_48000[] = {
	48000,
	};

	static struct snd_pcm_hw_constraint_list constraints_48000 = {
	.count = ARRAY_SIZE(rates_48000),
	.list = rates_48000,
	};

	static int byt_aif1_startup(struct snd_pcm_substream *substream)
	{
	return snd_pcm_hw_constraint_list(substream->runtime, 0,
	SNDRV_PCM_HW_PARAM_RATE,
	&constraints_48000);
	}

	static struct snd_soc_ops byt_aif1_ops = {
	.startup = byt_aif1_startup,
	};

	static struct snd_soc_ops byt_be_ssp2_ops = {
	.hw_params = byt_aif1_hw_params,
	};

	static struct snd_soc_dai_link byt_dailink[] = {
	[MERR_DPCM_AUDIO] = {
	.name = "Baytrail Audio Port",
	.stream_name = "Baytrail Audio",
	.cpu_dai_name = "media-cpu-dai",
	.codec_dai_name = "snd-soc-dummy-dai",
	.codec_name = "snd-soc-dummy",
	.platform_name = "sst-mfld-platform",
	.ignore_suspend = 1,
	.dynamic = 1,
	.dpcm_playback = 1,
	.dpcm_capture = 1,
	.ops = &byt_aif1_ops,
	},
	[MERR_DPCM_COMPR] = {
	.name = "Baytrail Compressed Port",
	.stream_name = "Baytrail Compress",
	.cpu_dai_name = "compress-cpu-dai",
	.codec_dai_name = "snd-soc-dummy-dai",
	.codec_name = "snd-soc-dummy",
	.platform_name = "sst-mfld-platform",
	},
	/* back ends */
	{
	.name = "SSP2-Codec",
	.be_id = 1,
	.cpu_dai_name = "ssp2-port",
	.platform_name = "sst-mfld-platform",
	.no_pcm = 1,
	.codec_dai_name = "rt5640-aif1",
	.codec_name = "i2c-10EC5640:00",
	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF
	\| SND_SOC_DAIFMT_CBS_CFS,
	.be_hw_params_fixup = byt_codec_fixup,
	.ignore_suspend = 1,
	.dpcm_playback = 1,
	.dpcm_capture = 1,
	.ops = &byt_be_ssp2_ops,
	},
	};

	/* SoC card */
	static struct snd_soc_card snd_soc_card_byt = {
	.name = "baytrailcraudio",
	.dai_link = byt_dailink,
	.num_links = ARRAY_SIZE(byt_dailink),
	.dapm_widgets = byt_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(byt_dapm_widgets),
	.dapm_routes = byt_audio_map,
	.num_dapm_routes = ARRAY_SIZE(byt_audio_map),
	.controls = byt_mc_controls,
	.num_controls = ARRAY_SIZE(byt_mc_controls),
	};

	static int snd_byt_mc_probe(struct platform_device *pdev)
	{
	int ret_val = 0;

	/* register the soc card */
	snd_soc_card_byt.dev = &pdev->dev;

	ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_byt);
	if (ret_val) {
	dev_err(&pdev->dev, "devm_snd_soc_register_card failed %d\n", ret_val);
	return ret_val;
	}
	platform_set_drvdata(pdev, &snd_soc_card_byt);
	return ret_val;
	}

	static struct platform_driver snd_byt_mc_driver = {
	.driver = {
	.owner = THIS_MODULE,
	.name = "bytt100_rt5640",
	.pm = &snd_soc_pm_ops,
	},
	.probe = snd_byt_mc_probe,
	};

	module_platform_driver(snd_byt_mc_driver);

	MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
	MODULE_AUTHOR("Subhransu S. Prusty <subhransu.s.prusty@intel.com>");
	MODULE_LICENSE("GPL v2");
	MODULE_ALIAS("platform:bytrt5640-audio");